diff options
Diffstat (limited to 'src/backend/gl')
| -rw-r--r-- | src/backend/gl/blur.c | 900 | ||||
| -rw-r--r-- | src/backend/gl/egl.c | 469 | ||||
| -rw-r--r-- | src/backend/gl/egl.h | 33 | ||||
| -rw-r--r-- | src/backend/gl/gl_common.c | 1479 | ||||
| -rw-r--r-- | src/backend/gl/gl_common.h | 100 | ||||
| -rw-r--r-- | src/backend/gl/glx.c | 51 | ||||
| -rw-r--r-- | src/backend/gl/glx.h | 1 | ||||
| -rw-r--r-- | src/backend/gl/shaders.c | 187 |
8 files changed, 2162 insertions, 1058 deletions
diff --git a/src/backend/gl/blur.c b/src/backend/gl/blur.c new file mode 100644 index 0000000..41022f5 --- /dev/null +++ b/src/backend/gl/blur.c @@ -0,0 +1,900 @@ +#include <locale.h> +#include <stdbool.h> + +#include <backend/backend.h> +#include <backend/backend_common.h> + +#include "gl_common.h" + +struct gl_blur_context { + enum blur_method method; + gl_blur_shader_t *blur_shader; + + /// Temporary textures used for blurring + GLuint *blur_textures; + int blur_texture_count; + /// Temporary fbos used for blurring + GLuint *blur_fbos; + int blur_fbo_count; + + /// Cached dimensions of each blur_texture. They are the same size as the target, + /// so they are always big enough without resizing. + /// Turns out calling glTexImage to resize is expensive, so we avoid that. + struct texture_size { + int width; + int height; + } *texture_sizes; + + /// Cached dimensions of the offscreen framebuffer. It's the same size as the + /// target but is expanded in either direction by resize_width / resize_height. + int fb_width, fb_height; + + /// How much do we need to resize the damaged region for blurring. + int resize_width, resize_height; + + int npasses; +}; + +/** + * Blur contents in a particular region. + */ +bool gl_kernel_blur(double opacity, struct gl_blur_context *bctx, const rect_t *extent, + struct backend_image *mask, coord_t mask_dst, const GLuint vao[2], + const int vao_nelems[2], GLuint source_texture, + geometry_t source_size, GLuint target_fbo, GLuint default_mask) { + int dst_y_fb_coord = bctx->fb_height - extent->y2; + + int curr = 0; + for (int i = 0; i < bctx->npasses; ++i) { + const gl_blur_shader_t *p = &bctx->blur_shader[i]; + assert(p->prog); + + assert(bctx->blur_textures[curr]); + + // The origin to use when sampling from the source texture + GLint texorig_x = extent->x1, texorig_y = dst_y_fb_coord; + GLint tex_width, tex_height; + GLuint src_texture; + + if (i == 0) { + src_texture = source_texture; + tex_width = source_size.width; + tex_height = source_size.height; + } else { + src_texture = bctx->blur_textures[curr]; + auto src_size = bctx->texture_sizes[curr]; + tex_width = src_size.width; + tex_height = src_size.height; + } + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, src_texture); + glUseProgram(p->prog); + glUniform2f(p->uniform_pixel_norm, 1.0F / (GLfloat)tex_width, + 1.0F / (GLfloat)tex_height); + + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, default_mask); + + glUniform1i(p->uniform_mask_tex, 1); + glUniform2f(p->uniform_mask_offset, 0.0F, 0.0F); + glUniform1i(p->uniform_mask_inverted, 0); + glUniform1f(p->uniform_mask_corner_radius, 0.0F); + + // The number of indices in the selected vertex array + GLsizei nelems; + + if (i < bctx->npasses - 1) { + assert(bctx->blur_fbos[0]); + assert(bctx->blur_textures[!curr]); + + // not last pass, draw into framebuffer, with resized regions + glBindVertexArray(vao[1]); + nelems = vao_nelems[1]; + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[0]); + + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, bctx->blur_textures[!curr], 0); + glDrawBuffer(GL_COLOR_ATTACHMENT0); + if (!gl_check_fb_complete(GL_FRAMEBUFFER)) { + return false; + } + + glUniform1f(p->uniform_opacity, 1.0F); + } else { + // last pass, draw directly into the back buffer, with origin + // regions. And apply mask if requested + if (mask) { + auto inner = (struct gl_texture *)mask->inner; + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, inner->texture); + glUniform1i(p->uniform_mask_inverted, mask->color_inverted); + glUniform1f(p->uniform_mask_corner_radius, + (float)mask->corner_radius); + glUniform2f( + p->uniform_mask_offset, (float)(mask_dst.x), + (float)(bctx->fb_height - mask_dst.y - inner->height)); + } + glBindVertexArray(vao[0]); + nelems = vao_nelems[0]; + glBindFramebuffer(GL_FRAMEBUFFER, target_fbo); + + glUniform1f(p->uniform_opacity, (float)opacity); + } + + glUniform2f(p->texorig_loc, (GLfloat)texorig_x, (GLfloat)texorig_y); + glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); + + // XXX use multiple draw calls is probably going to be slow than + // just simply blur the whole area. + + curr = !curr; + } + + return true; +} + +bool gl_dual_kawase_blur(double opacity, struct gl_blur_context *bctx, const rect_t *extent, + struct backend_image *mask, coord_t mask_dst, const GLuint vao[2], + const int vao_nelems[2], GLuint source_texture, + geometry_t source_size, GLuint target_fbo, GLuint default_mask) { + int dst_y_fb_coord = bctx->fb_height - extent->y2; + + int iterations = bctx->blur_texture_count; + int scale_factor = 1; + + // Kawase downsample pass + const gl_blur_shader_t *down_pass = &bctx->blur_shader[0]; + assert(down_pass->prog); + glUseProgram(down_pass->prog); + + glUniform2f(down_pass->texorig_loc, (GLfloat)extent->x1, (GLfloat)dst_y_fb_coord); + + for (int i = 0; i < iterations; ++i) { + // Scale output width / height by half in each iteration + scale_factor <<= 1; + + GLuint src_texture; + int tex_width, tex_height; + + if (i == 0) { + // first pass: copy from back buffer + src_texture = source_texture; + tex_width = source_size.width; + tex_height = source_size.height; + } else { + // copy from previous pass + src_texture = bctx->blur_textures[i - 1]; + auto src_size = bctx->texture_sizes[i - 1]; + tex_width = src_size.width; + tex_height = src_size.height; + } + + assert(src_texture); + assert(bctx->blur_fbos[i]); + + glBindTexture(GL_TEXTURE_2D, src_texture); + glBindVertexArray(vao[1]); + auto nelems = vao_nelems[1]; + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i]); + glDrawBuffer(GL_COLOR_ATTACHMENT0); + + glUniform1f(down_pass->scale_loc, (GLfloat)scale_factor); + + glUniform2f(down_pass->uniform_pixel_norm, 1.0F / (GLfloat)tex_width, + 1.0F / (GLfloat)tex_height); + + glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); + } + + // Kawase upsample pass + const gl_blur_shader_t *up_pass = &bctx->blur_shader[1]; + assert(up_pass->prog); + glUseProgram(up_pass->prog); + + glUniform2f(up_pass->texorig_loc, (GLfloat)extent->x1, (GLfloat)dst_y_fb_coord); + + for (int i = iterations - 1; i >= 0; --i) { + // Scale output width / height back by two in each iteration + scale_factor >>= 1; + + const GLuint src_texture = bctx->blur_textures[i]; + assert(src_texture); + + // Calculate normalized half-width/-height of a src pixel + auto src_size = bctx->texture_sizes[i]; + int tex_width = src_size.width; + int tex_height = src_size.height; + + // The number of indices in the selected vertex array + GLsizei nelems; + + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, src_texture); + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, default_mask); + + glUniform1i(up_pass->uniform_mask_tex, 1); + glUniform2f(up_pass->uniform_mask_offset, 0.0F, 0.0F); + glUniform1i(up_pass->uniform_mask_inverted, 0); + glUniform1f(up_pass->uniform_mask_corner_radius, 0.0F); + if (i > 0) { + assert(bctx->blur_fbos[i - 1]); + + // not last pass, draw into next framebuffer + glBindVertexArray(vao[1]); + nelems = vao_nelems[1]; + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i - 1]); + glDrawBuffer(GL_COLOR_ATTACHMENT0); + + glUniform1f(up_pass->uniform_opacity, (GLfloat)1); + } else { + // last pass, draw directly into the back buffer + if (mask) { + auto inner = (struct gl_texture *)mask->inner; + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, inner->texture); + glUniform1i(up_pass->uniform_mask_inverted, + mask->color_inverted); + glUniform1f(up_pass->uniform_mask_corner_radius, + (float)mask->corner_radius); + glUniform2f( + up_pass->uniform_mask_offset, (float)(mask_dst.x), + (float)(bctx->fb_height - mask_dst.y - inner->height)); + } + glBindVertexArray(vao[0]); + nelems = vao_nelems[0]; + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, target_fbo); + + glUniform1f(up_pass->uniform_opacity, (GLfloat)opacity); + } + + glUniform1f(up_pass->scale_loc, (GLfloat)scale_factor); + glUniform2f(up_pass->uniform_pixel_norm, 1.0F / (GLfloat)tex_width, + 1.0F / (GLfloat)tex_height); + + glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); + } + + return true; +} + +bool gl_blur_impl(double opacity, struct gl_blur_context *bctx, void *mask, + coord_t mask_dst, const region_t *reg_blur, + const region_t *reg_visible attr_unused, GLuint source_texture, + geometry_t source_size, GLuint target_fbo, GLuint default_mask) { + bool ret = false; + + if (source_size.width != bctx->fb_width || source_size.height != bctx->fb_height) { + // Resize the temporary textures used for blur in case the root + // size changed + bctx->fb_width = source_size.width; + bctx->fb_height = source_size.height; + + for (int i = 0; i < bctx->blur_texture_count; ++i) { + auto tex_size = bctx->texture_sizes + i; + if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { + // Use smaller textures for each iteration (quarter of the + // previous texture) + tex_size->width = 1 + ((bctx->fb_width - 1) >> (i + 1)); + tex_size->height = 1 + ((bctx->fb_height - 1) >> (i + 1)); + } else { + tex_size->width = bctx->fb_width; + tex_size->height = bctx->fb_height; + } + + glBindTexture(GL_TEXTURE_2D, bctx->blur_textures[i]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_size->width, + tex_size->height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL); + + if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { + // Attach texture to FBO target + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i]); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, + GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, + bctx->blur_textures[i], 0); + if (!gl_check_fb_complete(GL_FRAMEBUFFER)) { + glBindFramebuffer(GL_FRAMEBUFFER, 0); + return false; + } + } + } + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); + } + + // Remainder: regions are in Xorg coordinates + auto reg_blur_resized = + resize_region(reg_blur, bctx->resize_width, bctx->resize_height); + const rect_t *extent = pixman_region32_extents((region_t *)reg_blur), + *extent_resized = pixman_region32_extents(®_blur_resized); + int width = extent->x2 - extent->x1, height = extent->y2 - extent->y1; + if (width == 0 || height == 0) { + return true; + } + + int nrects, nrects_resized; + const rect_t *rects = pixman_region32_rectangles((region_t *)reg_blur, &nrects), + *rects_resized = + pixman_region32_rectangles(®_blur_resized, &nrects_resized); + if (!nrects || !nrects_resized) { + return true; + } + + auto coord = ccalloc(nrects * 16, GLint); + auto indices = ccalloc(nrects * 6, GLuint); + auto extent_height = extent_resized->y2 - extent_resized->y1; + x_rect_to_coords( + nrects, rects, (coord_t){.x = extent_resized->x1, .y = extent_resized->y1}, + extent_height, bctx->fb_height, source_size.height, false, coord, indices); + + auto coord_resized = ccalloc(nrects_resized * 16, GLint); + auto indices_resized = ccalloc(nrects_resized * 6, GLuint); + x_rect_to_coords(nrects_resized, rects_resized, + (coord_t){.x = extent_resized->x1, .y = extent_resized->y1}, + extent_height, bctx->fb_height, bctx->fb_height, false, + coord_resized, indices_resized); + pixman_region32_fini(®_blur_resized); + + GLuint vao[2]; + glGenVertexArrays(2, vao); + GLuint bo[4]; + glGenBuffers(4, bo); + + glBindVertexArray(vao[0]); + glBindBuffer(GL_ARRAY_BUFFER, bo[0]); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bo[1]); + glBufferData(GL_ARRAY_BUFFER, (long)sizeof(*coord) * nrects * 16, coord, GL_STATIC_DRAW); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, (long)sizeof(*indices) * nrects * 6, + indices, GL_STATIC_DRAW); + glEnableVertexAttribArray(vert_coord_loc); + glEnableVertexAttribArray(vert_in_texcoord_loc); + glVertexAttribPointer(vert_coord_loc, 2, GL_INT, GL_FALSE, sizeof(GLint) * 4, NULL); + glVertexAttribPointer(vert_in_texcoord_loc, 2, GL_INT, GL_FALSE, + sizeof(GLint) * 4, (void *)(sizeof(GLint) * 2)); + + glBindVertexArray(vao[1]); + glBindBuffer(GL_ARRAY_BUFFER, bo[2]); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bo[3]); + glBufferData(GL_ARRAY_BUFFER, (long)sizeof(*coord_resized) * nrects_resized * 16, + coord_resized, GL_STATIC_DRAW); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, + (long)sizeof(*indices_resized) * nrects_resized * 6, indices_resized, + GL_STATIC_DRAW); + glEnableVertexAttribArray(vert_coord_loc); + glEnableVertexAttribArray(vert_in_texcoord_loc); + glVertexAttribPointer(vert_coord_loc, 2, GL_INT, GL_FALSE, sizeof(GLint) * 4, NULL); + glVertexAttribPointer(vert_in_texcoord_loc, 2, GL_INT, GL_FALSE, + sizeof(GLint) * 4, (void *)(sizeof(GLint) * 2)); + + int vao_nelems[2] = {nrects * 6, nrects_resized * 6}; + + if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { + ret = gl_dual_kawase_blur(opacity, bctx, extent_resized, mask, mask_dst, + vao, vao_nelems, source_texture, source_size, + target_fbo, default_mask); + } else { + ret = gl_kernel_blur(opacity, bctx, extent_resized, mask, mask_dst, vao, + vao_nelems, source_texture, source_size, target_fbo, + default_mask); + } + + glBindFramebuffer(GL_FRAMEBUFFER, 0); + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, 0); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, 0); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + glDeleteBuffers(4, bo); + glBindVertexArray(0); + glDeleteVertexArrays(2, vao); + glUseProgram(0); + + free(indices); + free(coord); + free(indices_resized); + free(coord_resized); + + gl_check_err(); + return ret; +} + +bool gl_blur(backend_t *base, double opacity, void *ctx, void *mask, coord_t mask_dst, + const region_t *reg_blur, const region_t *reg_visible attr_unused) { + auto gd = (struct gl_data *)base; + auto bctx = (struct gl_blur_context *)ctx; + return gl_blur_impl(opacity, bctx, mask, mask_dst, reg_blur, reg_visible, + gd->back_texture, + (geometry_t){.width = gd->width, .height = gd->height}, + gd->back_fbo, gd->default_mask_texture); +} + +static inline void gl_free_blur_shader(gl_blur_shader_t *shader) { + if (shader->prog) { + glDeleteProgram(shader->prog); + } + + shader->prog = 0; +} + +void gl_destroy_blur_context(backend_t *base attr_unused, void *ctx) { + auto bctx = (struct gl_blur_context *)ctx; + // Free GLSL shaders/programs + for (int i = 0; i < bctx->npasses; ++i) { + gl_free_blur_shader(&bctx->blur_shader[i]); + } + free(bctx->blur_shader); + + if (bctx->blur_texture_count && bctx->blur_textures) { + glDeleteTextures(bctx->blur_texture_count, bctx->blur_textures); + free(bctx->blur_textures); + } + if (bctx->blur_texture_count && bctx->texture_sizes) { + free(bctx->texture_sizes); + } + if (bctx->blur_fbo_count && bctx->blur_fbos) { + glDeleteFramebuffers(bctx->blur_fbo_count, bctx->blur_fbos); + free(bctx->blur_fbos); + } + + bctx->blur_texture_count = 0; + bctx->blur_fbo_count = 0; + + free(bctx); + + gl_check_err(); +} + +/** + * Initialize GL blur filters. + */ +bool gl_create_kernel_blur_context(void *blur_context, GLfloat *projection, + enum blur_method method, void *args) { + bool success = false; + auto ctx = (struct gl_blur_context *)blur_context; + + struct conv **kernels; + + int nkernels; + ctx->method = BLUR_METHOD_KERNEL; + if (method == BLUR_METHOD_KERNEL) { + nkernels = ((struct kernel_blur_args *)args)->kernel_count; + kernels = ((struct kernel_blur_args *)args)->kernels; + } else { + kernels = generate_blur_kernel(method, args, &nkernels); + } + + if (!nkernels) { + ctx->method = BLUR_METHOD_NONE; + return true; + } + + // Specify required textures and FBOs + ctx->blur_texture_count = 2; + ctx->blur_fbo_count = 1; + + ctx->blur_shader = ccalloc(max2(2, nkernels), gl_blur_shader_t); + + char *lc_numeric_old = strdup(setlocale(LC_NUMERIC, NULL)); + // Enforce LC_NUMERIC locale "C" here to make sure decimal point is sane + // Thanks to hiciu for reporting. + setlocale(LC_NUMERIC, "C"); + + // clang-format off + static const char *FRAG_SHADER_BLUR = GLSL(330, + %s\n // other extension pragmas + uniform sampler2D tex_src; + uniform vec2 pixel_norm; + uniform float opacity; + in vec2 texcoord; + out vec4 out_color; + float mask_factor(); + void main() { + vec2 uv = texcoord * pixel_norm; + vec4 sum = vec4(0.0, 0.0, 0.0, 0.0); + %s //body of the convolution + out_color = sum / float(%.7g) * opacity * mask_factor(); + } + ); + static const char *FRAG_SHADER_BLUR_ADD = QUOTE( + sum += float(%.7g) * texture2D(tex_src, uv + pixel_norm * vec2(%.7g, %.7g)); + ); + // clang-format on + + const char *shader_add = FRAG_SHADER_BLUR_ADD; + char *extension = strdup(""); + + for (int i = 0; i < nkernels; i++) { + auto kern = kernels[i]; + // Build shader + int width = kern->w, height = kern->h; + int nele = width * height; + // '%.7g' is at most 14 characters, inserted 3 times + size_t body_len = (strlen(shader_add) + 42) * (uint)nele; + char *shader_body = ccalloc(body_len, char); + char *pc = shader_body; + + // Make use of the linear interpolation hardware by sampling 2 pixels with + // one texture access by sampling between both pixels based on their + // relative weight. Easiest done in a single dimension as 2D bilinear + // filtering would raise additional constraints on the kernels. Therefore + // only use interpolation along the larger dimension. + double sum = 0.0; + if (width > height) { + // use interpolation in x dimension (width) + for (int j = 0; j < height; ++j) { + for (int k = 0; k < width; k += 2) { + double val1, val2; + val1 = kern->data[j * width + k]; + val2 = (k + 1 < width) + ? kern->data[j * width + k + 1] + : 0; + + double combined_weight = val1 + val2; + if (combined_weight == 0) { + continue; + } + sum += combined_weight; + + double offset_x = + k + (val2 / combined_weight) - (width / 2); + double offset_y = j - (height / 2); + pc += snprintf( + pc, body_len - (ulong)(pc - shader_body), + shader_add, combined_weight, offset_x, offset_y); + assert(pc < shader_body + body_len); + } + } + } else { + // use interpolation in y dimension (height) + for (int j = 0; j < height; j += 2) { + for (int k = 0; k < width; ++k) { + double val1, val2; + val1 = kern->data[j * width + k]; + val2 = (j + 1 < height) + ? kern->data[(j + 1) * width + k] + : 0; + + double combined_weight = val1 + val2; + if (combined_weight == 0) { + continue; + } + sum += combined_weight; + + double offset_x = k - (width / 2); + double offset_y = + j + (val2 / combined_weight) - (height / 2); + pc += snprintf( + pc, body_len - (ulong)(pc - shader_body), + shader_add, combined_weight, offset_x, offset_y); + assert(pc < shader_body + body_len); + } + } + } + + auto pass = ctx->blur_shader + i; + size_t shader_len = strlen(FRAG_SHADER_BLUR) + strlen(extension) + + strlen(shader_body) + 10 /* sum */ + + 1 /* null terminator */; + char *shader_str = ccalloc(shader_len, char); + auto real_shader_len = snprintf(shader_str, shader_len, FRAG_SHADER_BLUR, + extension, shader_body, sum); + CHECK(real_shader_len >= 0); + CHECK((size_t)real_shader_len < shader_len); + free(shader_body); + + // Build program + pass->prog = gl_create_program_from_strv( + (const char *[]){vertex_shader, NULL}, + (const char *[]){shader_str, masking_glsl, NULL}); + free(shader_str); + if (!pass->prog) { + log_error("Failed to create GLSL program."); + success = false; + goto out; + } + glBindFragDataLocation(pass->prog, 0, "out_color"); + + // Get uniform addresses + bind_uniform(pass, pixel_norm); + bind_uniform(pass, opacity); + + bind_uniform(pass, mask_tex); + bind_uniform(pass, mask_offset); + bind_uniform(pass, mask_inverted); + bind_uniform(pass, mask_corner_radius); + log_info("Uniform locations: %d %d %d %d %d", pass->uniform_mask_tex, + pass->uniform_mask_offset, pass->uniform_mask_inverted, + pass->uniform_mask_corner_radius, pass->uniform_opacity); + pass->texorig_loc = glGetUniformLocationChecked(pass->prog, "texorig"); + + // Setup projection matrix + glUseProgram(pass->prog); + int pml = glGetUniformLocationChecked(pass->prog, "projection"); + glUniformMatrix4fv(pml, 1, false, projection); + glUseProgram(0); + + ctx->resize_width += kern->w / 2; + ctx->resize_height += kern->h / 2; + } + + if (nkernels == 1) { + // Generate an extra null pass so we don't need special code path for + // the single pass case + auto pass = &ctx->blur_shader[1]; + pass->prog = gl_create_program_from_strv( + (const char *[]){vertex_shader, NULL}, + (const char *[]){copy_with_mask_frag, masking_glsl, NULL}); + pass->uniform_pixel_norm = -1; + pass->uniform_opacity = -1; + pass->texorig_loc = glGetUniformLocationChecked(pass->prog, "texorig"); + bind_uniform(pass, mask_tex); + bind_uniform(pass, mask_offset); + bind_uniform(pass, mask_inverted); + bind_uniform(pass, mask_corner_radius); + + // Setup projection matrix + glUseProgram(pass->prog); + int pml = glGetUniformLocationChecked(pass->prog, "projection"); + glUniformMatrix4fv(pml, 1, false, projection); + glUseProgram(0); + + ctx->npasses = 2; + } else { + ctx->npasses = nkernels; + } + + success = true; +out: + if (method != BLUR_METHOD_KERNEL) { + // We generated the blur kernels, so we need to free them + for (int i = 0; i < nkernels; i++) { + free(kernels[i]); + } + free(kernels); + } + + free(extension); + // Restore LC_NUMERIC + setlocale(LC_NUMERIC, lc_numeric_old); + free(lc_numeric_old); + + return success; +} + +bool gl_create_dual_kawase_blur_context(void *blur_context, GLfloat *projection, + enum blur_method method, void *args) { + bool success = false; + auto ctx = (struct gl_blur_context *)blur_context; + + ctx->method = method; + + auto blur_params = generate_dual_kawase_params(args); + + // Specify required textures and FBOs + ctx->blur_texture_count = blur_params->iterations; + ctx->blur_fbo_count = blur_params->iterations; + + ctx->resize_width += blur_params->expand; + ctx->resize_height += blur_params->expand; + + ctx->npasses = 2; + ctx->blur_shader = ccalloc(ctx->npasses, gl_blur_shader_t); + + char *lc_numeric_old = strdup(setlocale(LC_NUMERIC, NULL)); + // Enforce LC_NUMERIC locale "C" here to make sure decimal point is sane + // Thanks to hiciu for reporting. + setlocale(LC_NUMERIC, "C"); + + // Dual-kawase downsample shader / program + auto down_pass = ctx->blur_shader; + { + // clang-format off + static const char *FRAG_SHADER_DOWN = GLSL(330, + uniform sampler2D tex_src; + uniform float scale = 1.0; + uniform vec2 pixel_norm; + in vec2 texcoord; + out vec4 out_color; + void main() { + vec2 offset = %.7g * pixel_norm; + vec2 uv = texcoord * pixel_norm * (2.0 / scale); + vec4 sum = texture2D(tex_src, uv) * 4.0; + sum += texture2D(tex_src, uv - vec2(0.5, 0.5) * offset); + sum += texture2D(tex_src, uv + vec2(0.5, 0.5) * offset); + sum += texture2D(tex_src, uv + vec2(0.5, -0.5) * offset); + sum += texture2D(tex_src, uv - vec2(0.5, -0.5) * offset); + out_color = sum / 8.0; + } + ); + // clang-format on + + // Build shader + size_t shader_len = + strlen(FRAG_SHADER_DOWN) + 10 /* offset */ + 1 /* null terminator */; + char *shader_str = ccalloc(shader_len, char); + auto real_shader_len = + snprintf(shader_str, shader_len, FRAG_SHADER_DOWN, blur_params->offset); + CHECK(real_shader_len >= 0); + CHECK((size_t)real_shader_len < shader_len); + + // Build program + down_pass->prog = gl_create_program_from_str(vertex_shader, shader_str); + free(shader_str); + if (!down_pass->prog) { + log_error("Failed to create GLSL program."); + success = false; + goto out; + } + glBindFragDataLocation(down_pass->prog, 0, "out_color"); + + // Get uniform addresses + bind_uniform(down_pass, pixel_norm); + down_pass->texorig_loc = + glGetUniformLocationChecked(down_pass->prog, "texorig"); + down_pass->scale_loc = + glGetUniformLocationChecked(down_pass->prog, "scale"); + + // Setup projection matrix + glUseProgram(down_pass->prog); + int pml = glGetUniformLocationChecked(down_pass->prog, "projection"); + glUniformMatrix4fv(pml, 1, false, projection); + glUseProgram(0); + } + + // Dual-kawase upsample shader / program + auto up_pass = ctx->blur_shader + 1; + { + // clang-format off + static const char *FRAG_SHADER_UP = GLSL(330, + uniform sampler2D tex_src; + uniform float scale = 1.0; + uniform vec2 pixel_norm; + uniform float opacity; + in vec2 texcoord; + out vec4 out_color; + float mask_factor(); + void main() { + vec2 offset = %.7g * pixel_norm; + vec2 uv = texcoord * pixel_norm / (2 * scale); + vec4 sum = texture2D(tex_src, uv + vec2(-1.0, 0.0) * offset); + sum += texture2D(tex_src, uv + vec2(-0.5, 0.5) * offset) * 2.0; + sum += texture2D(tex_src, uv + vec2(0.0, 1.0) * offset); + sum += texture2D(tex_src, uv + vec2(0.5, 0.5) * offset) * 2.0; + sum += texture2D(tex_src, uv + vec2(1.0, 0.0) * offset); + sum += texture2D(tex_src, uv + vec2(0.5, -0.5) * offset) * 2.0; + sum += texture2D(tex_src, uv + vec2(0.0, -1.0) * offset); + sum += texture2D(tex_src, uv + vec2(-0.5, -0.5) * offset) * 2.0; + out_color = sum / 12.0 * opacity * mask_factor(); + } + ); + // clang-format on + + // Build shader + size_t shader_len = + strlen(FRAG_SHADER_UP) + 10 /* offset */ + 1 /* null terminator */; + char *shader_str = ccalloc(shader_len, char); + auto real_shader_len = + snprintf(shader_str, shader_len, FRAG_SHADER_UP, blur_params->offset); + CHECK(real_shader_len >= 0); + CHECK((size_t)real_shader_len < shader_len); + + // Build program + up_pass->prog = gl_create_program_from_strv( + (const char *[]){vertex_shader, NULL}, + (const char *[]){shader_str, masking_glsl, NULL}); + free(shader_str); + if (!up_pass->prog) { + log_error("Failed to create GLSL program."); + success = false; + goto out; + } + glBindFragDataLocation(up_pass->prog, 0, "out_color"); + + // Get uniform addresses + bind_uniform(up_pass, pixel_norm); + bind_uniform(up_pass, opacity); + + bind_uniform(up_pass, mask_tex); + bind_uniform(up_pass, mask_offset); + bind_uniform(up_pass, mask_inverted); + bind_uniform(up_pass, mask_corner_radius); + + up_pass->texorig_loc = + glGetUniformLocationChecked(up_pass->prog, "texorig"); + up_pass->scale_loc = glGetUniformLocationChecked(up_pass->prog, "scale"); + + // Setup projection matrix + glUseProgram(up_pass->prog); + int pml = glGetUniformLocationChecked(up_pass->prog, "projection"); + glUniformMatrix4fv(pml, 1, false, projection); + glUseProgram(0); + } + + success = true; +out: + free(blur_params); + + if (!success) { + ctx = NULL; + } + + // Restore LC_NUMERIC + setlocale(LC_NUMERIC, lc_numeric_old); + free(lc_numeric_old); + + return success; +} + +void *gl_create_blur_context(backend_t *base, enum blur_method method, void *args) { + bool success; + auto gd = (struct gl_data *)base; + + auto ctx = ccalloc(1, struct gl_blur_context); + + if (!method || method >= BLUR_METHOD_INVALID) { + ctx->method = BLUR_METHOD_NONE; + return ctx; + } + + // Set projection matrix to gl viewport dimensions so we can use screen + // coordinates for all vertices + // Note: OpenGL matrices are column major + GLint viewport_dimensions[2]; + glGetIntegerv(GL_MAX_VIEWPORT_DIMS, viewport_dimensions); + GLfloat projection_matrix[4][4] = {{2.0F / (GLfloat)viewport_dimensions[0], 0, 0, 0}, + {0, 2.0F / (GLfloat)viewport_dimensions[1], 0, 0}, + {0, 0, 0, 0}, + {-1, -1, 0, 1}}; + + if (method == BLUR_METHOD_DUAL_KAWASE) { + success = gl_create_dual_kawase_blur_context(ctx, projection_matrix[0], + method, args); + } else { + success = + gl_create_kernel_blur_context(ctx, projection_matrix[0], method, args); + } + if (!success || ctx->method == BLUR_METHOD_NONE) { + goto out; + } + + // Texture size will be defined by gl_blur + ctx->blur_textures = ccalloc(ctx->blur_texture_count, GLuint); + ctx->texture_sizes = ccalloc(ctx->blur_texture_count, struct texture_size); + glGenTextures(ctx->blur_texture_count, ctx->blur_textures); + + for (int i = 0; i < ctx->blur_texture_count; ++i) { + glBindTexture(GL_TEXTURE_2D, ctx->blur_textures[i]); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + } + + // Generate FBO and textures when needed + ctx->blur_fbos = ccalloc(ctx->blur_fbo_count, GLuint); + glGenFramebuffers(ctx->blur_fbo_count, ctx->blur_fbos); + + for (int i = 0; i < ctx->blur_fbo_count; ++i) { + if (!ctx->blur_fbos[i]) { + log_error("Failed to generate framebuffer objects for blur"); + success = false; + goto out; + } + } + +out: + if (!success) { + gl_destroy_blur_context(&gd->base, ctx); + ctx = NULL; + } + + gl_check_err(); + return ctx; +} + +void gl_get_blur_size(void *blur_context, int *width, int *height) { + auto ctx = (struct gl_blur_context *)blur_context; + *width = ctx->resize_width; + *height = ctx->resize_height; +} diff --git a/src/backend/gl/egl.c b/src/backend/gl/egl.c new file mode 100644 index 0000000..e6d4d90 --- /dev/null +++ b/src/backend/gl/egl.c @@ -0,0 +1,469 @@ +// SPDX-License-Identifier: MPL-2.0 +/* + * Copyright (c) 2022 Yuxuan Shui <[email protected]> + */ + +#include <X11/Xlib-xcb.h> +#include <assert.h> +#include <limits.h> +#include <stdbool.h> +#include <stdlib.h> +#include <string.h> +#include <xcb/xcb.h> + +#include "backend/backend.h" +#include "backend/backend_common.h" +#include "backend/gl/egl.h" +#include "backend/gl/gl_common.h" +#include "common.h" +#include "compiler.h" +#include "config.h" +#include "log.h" +#include "picom.h" +#include "utils.h" +#include "x.h" + +struct egl_pixmap { + EGLImage image; + xcb_pixmap_t pixmap; + bool owned; +}; + +struct egl_data { + struct gl_data gl; + EGLDisplay display; + EGLSurface target_win; + EGLContext ctx; +}; + +static PFNGLEGLIMAGETARGETTEXSTORAGEEXTPROC glEGLImageTargetTexStorage = NULL; +static PFNEGLCREATEIMAGEKHRPROC eglCreateImageProc = NULL; +static PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageProc = NULL; +static PFNEGLGETPLATFORMDISPLAYPROC eglGetPlatformDisplayProc = NULL; +static PFNEGLCREATEPLATFORMWINDOWSURFACEPROC eglCreatePlatformWindowSurfaceProc = NULL; + +/** + * Free a glx_texture_t. + */ +static void egl_release_image(backend_t *base, struct gl_texture *tex) { + struct egl_data *gd = (void *)base; + struct egl_pixmap *p = tex->user_data; + // Release binding + if (p->image != EGL_NO_IMAGE) { + eglDestroyImageProc(gd->display, p->image); + p->image = EGL_NO_IMAGE; + } + + if (p->owned) { + xcb_free_pixmap(base->c, p->pixmap); + p->pixmap = XCB_NONE; + } + + free(p); + tex->user_data = NULL; +} + +/** + * Destroy GLX related resources. + */ +void egl_deinit(backend_t *base) { + struct egl_data *gd = (void *)base; + + gl_deinit(&gd->gl); + + // Destroy GLX context + if (gd->ctx != EGL_NO_CONTEXT) { + eglMakeCurrent(gd->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); + eglDestroyContext(gd->display, gd->ctx); + gd->ctx = EGL_NO_CONTEXT; + } + + if (gd->target_win != EGL_NO_SURFACE) { + eglDestroySurface(gd->display, gd->target_win); + gd->target_win = EGL_NO_SURFACE; + } + + if (gd->display != EGL_NO_DISPLAY) { + eglTerminate(gd->display); + gd->display = EGL_NO_DISPLAY; + } + + free(gd); +} + +static void *egl_decouple_user_data(backend_t *base attr_unused, void *ud attr_unused) { + auto ret = cmalloc(struct egl_pixmap); + ret->owned = false; + ret->image = EGL_NO_IMAGE; + ret->pixmap = 0; + return ret; +} + +static bool egl_set_swap_interval(int interval, EGLDisplay dpy) { + return eglSwapInterval(dpy, interval); +} + +/** + * Initialize OpenGL. + */ +static backend_t *egl_init(session_t *ps) { + bool success = false; + struct egl_data *gd = NULL; + +#define get_proc(name, type) \ + name##Proc = (type)eglGetProcAddress(#name); \ + if (!name##Proc) { \ + log_error("Failed to get EGL function " #name); \ + goto end; \ + } + get_proc(eglCreateImage, PFNEGLCREATEIMAGEKHRPROC); + get_proc(eglDestroyImage, PFNEGLDESTROYIMAGEKHRPROC); + get_proc(eglGetPlatformDisplay, PFNEGLGETPLATFORMDISPLAYPROC); + get_proc(eglCreatePlatformWindowSurface, PFNEGLCREATEPLATFORMWINDOWSURFACEPROC); +#undef get_proc + + // Check if we have the X11 platform + const char *exts = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS); + if (strstr(exts, "EGL_EXT_platform_x11") == NULL) { + log_error("X11 platform not available."); + return NULL; + } + + gd = ccalloc(1, struct egl_data); + gd->display = eglGetPlatformDisplayProc(EGL_PLATFORM_X11_EXT, ps->dpy, + (EGLAttrib[]){ + EGL_PLATFORM_X11_SCREEN_EXT, + ps->scr, + EGL_NONE, + }); + if (gd->display == EGL_NO_DISPLAY) { + log_error("Failed to get EGL display."); + goto end; + } + + EGLint major, minor; + if (!eglInitialize(gd->display, &major, &minor)) { + log_error("Failed to initialize EGL."); + goto end; + } + + if (major < 1 || (major == 1 && minor < 5)) { + log_error("EGL version too old, need at least 1.5."); + goto end; + } + + // Check if EGL supports OpenGL + const char *apis = eglQueryString(gd->display, EGL_CLIENT_APIS); + if (strstr(apis, "OpenGL") == NULL) { + log_error("EGL does not support OpenGL."); + goto end; + } + + eglext_init(gd->display); + init_backend_base(&gd->gl.base, ps); + if (!eglext.has_EGL_KHR_image_pixmap) { + log_error("EGL_KHR_image_pixmap not available."); + goto end; + } + + int ncfgs = 0; + if (eglGetConfigs(gd->display, NULL, 0, &ncfgs) != EGL_TRUE) { + log_error("Failed to get EGL configs."); + goto end; + } + + auto visual_info = x_get_visual_info(ps->c, ps->vis); + EGLConfig *cfgs = ccalloc(ncfgs, EGLConfig); + // clang-format off + if (eglChooseConfig(gd->display, + (EGLint[]){ + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, + EGL_RED_SIZE, visual_info.red_size, + EGL_GREEN_SIZE, visual_info.green_size, + EGL_BLUE_SIZE, visual_info.blue_size, + EGL_ALPHA_SIZE, visual_info.alpha_size, + EGL_STENCIL_SIZE, 1, + EGL_CONFIG_CAVEAT, EGL_NONE, + EGL_NONE, + }, cfgs, ncfgs, &ncfgs) != EGL_TRUE) { + log_error("Failed to choose EGL config for the root window."); + goto end; + } + // clang-format on + + EGLConfig target_cfg = cfgs[0]; + free(cfgs); + + gd->target_win = eglCreatePlatformWindowSurfaceProc( + gd->display, target_cfg, (xcb_window_t[]){session_get_target_window(ps)}, NULL); + if (gd->target_win == EGL_NO_SURFACE) { + log_error("Failed to create EGL surface."); + goto end; + } + + if (eglBindAPI(EGL_OPENGL_API) != EGL_TRUE) { + log_error("Failed to bind OpenGL API."); + goto end; + } + + gd->ctx = eglCreateContext(gd->display, target_cfg, NULL, NULL); + if (gd->ctx == EGL_NO_CONTEXT) { + log_error("Failed to get GLX context."); + goto end; + } + + if (!eglMakeCurrent(gd->display, gd->target_win, gd->target_win, gd->ctx)) { + log_error("Failed to attach GLX context."); + goto end; + } + + if (!gl_init(&gd->gl, ps)) { + log_error("Failed to setup OpenGL"); + goto end; + } + if (!gd->gl.has_egl_image_storage) { + log_error("GL_EXT_EGL_image_storage extension not available."); + goto end; + } + + glEGLImageTargetTexStorage = + (PFNGLEGLIMAGETARGETTEXSTORAGEEXTPROC)eglGetProcAddress("glEGLImageTargetTexS" + "torageEXT"); + if (glEGLImageTargetTexStorage == NULL) { + log_error("Failed to get glEGLImageTargetTexStorageEXT."); + goto end; + } + + gd->gl.decouple_texture_user_data = egl_decouple_user_data; + gd->gl.release_user_data = egl_release_image; + + if (ps->o.vsync) { + if (!egl_set_swap_interval(1, gd->display)) { + log_error("Failed to enable vsync. %#x", eglGetError()); + } + } else { + egl_set_swap_interval(0, gd->display); + } + + success = true; + +end: + if (!success) { + if (gd != NULL) { + egl_deinit(&gd->gl.base); + } + return NULL; + } + + return &gd->gl.base; +} + +static void * +egl_bind_pixmap(backend_t *base, xcb_pixmap_t pixmap, struct xvisual_info fmt, bool owned) { + struct egl_data *gd = (void *)base; + struct egl_pixmap *eglpixmap = NULL; + + auto r = xcb_get_geometry_reply(base->c, xcb_get_geometry(base->c, pixmap), NULL); + if (!r) { + log_error("Invalid pixmap %#010x", pixmap); + return NULL; + } + + log_trace("Binding pixmap %#010x", pixmap); + auto wd = ccalloc(1, struct backend_image); + wd->max_brightness = 1; + auto inner = ccalloc(1, struct gl_texture); + inner->width = wd->ewidth = r->width; + inner->height = wd->eheight = r->height; + wd->inner = (struct backend_image_inner_base *)inner; + free(r); + + log_debug("depth %d", fmt.visual_depth); + + inner->y_inverted = true; + + eglpixmap = cmalloc(struct egl_pixmap); + eglpixmap->pixmap = pixmap; + eglpixmap->image = eglCreateImageProc(gd->display, gd->ctx, EGL_NATIVE_PIXMAP_KHR, + (EGLClientBuffer)(uintptr_t)pixmap, NULL); + eglpixmap->owned = owned; + + if (eglpixmap->image == EGL_NO_IMAGE) { + log_error("Failed to create eglpixmap for pixmap %#010x", pixmap); + goto err; + } + + log_trace("EGLImage %p", eglpixmap->image); + + // Create texture + inner->user_data = eglpixmap; + inner->texture = gl_new_texture(GL_TEXTURE_2D); + inner->has_alpha = fmt.alpha_size != 0; + wd->opacity = 1; + wd->color_inverted = false; + wd->dim = 0; + wd->inner->refcount = 1; + glBindTexture(GL_TEXTURE_2D, inner->texture); + glEGLImageTargetTexStorage(GL_TEXTURE_2D, eglpixmap->image, NULL); + glBindTexture(GL_TEXTURE_2D, 0); + + gl_check_err(); + return wd; +err: + if (eglpixmap && eglpixmap->image) { + eglDestroyImageProc(gd->display, eglpixmap->image); + } + free(eglpixmap); + + if (owned) { + xcb_free_pixmap(base->c, pixmap); + } + free(wd); + return NULL; +} + +static void egl_present(backend_t *base, const region_t *region attr_unused) { + struct egl_data *gd = (void *)base; + gl_present(base, region); + eglSwapBuffers(gd->display, gd->target_win); + if (!gd->gl.is_nvidia) { + glFinish(); + } +} + +static int egl_buffer_age(backend_t *base) { + if (!eglext.has_EGL_EXT_buffer_age) { + return -1; + } + + struct egl_data *gd = (void *)base; + EGLint val; + eglQuerySurface(gd->display, (EGLSurface)gd->target_win, EGL_BUFFER_AGE_EXT, &val); + return (int)val ?: -1; +} + +static void egl_diagnostics(backend_t *base) { + struct egl_data *gd = (void *)base; + bool warn_software_rendering = false; + const char *software_renderer_names[] = {"llvmpipe", "SWR", "softpipe"}; + auto egl_vendor = eglQueryString(gd->display, EGL_VENDOR); + printf("* Driver vendors:\n"); + printf(" * EGL: %s\n", egl_vendor); + if (eglext.has_EGL_MESA_query_driver) { + printf(" * EGL driver: %s\n", eglGetDisplayDriverName(gd->display)); + } + printf(" * GL: %s\n", glGetString(GL_VENDOR)); + + auto gl_renderer = (const char *)glGetString(GL_RENDERER); + printf("* GL renderer: %s\n", gl_renderer); + if (strstr(egl_vendor, "Mesa")) { + for (size_t i = 0; i < ARR_SIZE(software_renderer_names); i++) { + if (strstr(gl_renderer, software_renderer_names[i]) != NULL) { + warn_software_rendering = true; + break; + } + } + } + + if (warn_software_rendering) { + printf("\n(You are using a software renderer. Unless you are doing this\n" + "intentionally, this means you don't have a graphics driver\n" + "properly installed. Performance will suffer. Please fix this\n" + "before reporting your issue.)\n"); + } +} + +struct backend_operations egl_ops = { + .init = egl_init, + .deinit = egl_deinit, + .bind_pixmap = egl_bind_pixmap, + .release_image = gl_release_image, + .compose = gl_compose, + .image_op = gl_image_op, + .set_image_property = gl_set_image_property, + .clone_image = default_clone_image, + .blur = gl_blur, + .is_image_transparent = default_is_image_transparent, + .present = egl_present, + .buffer_age = egl_buffer_age, + .create_shadow_context = gl_create_shadow_context, + .destroy_shadow_context = gl_destroy_shadow_context, + .render_shadow = backend_render_shadow_from_mask, + .shadow_from_mask = gl_shadow_from_mask, + .make_mask = gl_make_mask, + .fill = gl_fill, + .create_blur_context = gl_create_blur_context, + .destroy_blur_context = gl_destroy_blur_context, + .get_blur_size = gl_get_blur_size, + .diagnostics = egl_diagnostics, + .device_status = gl_device_status, + .create_shader = gl_create_window_shader, + .destroy_shader = gl_destroy_window_shader, + .get_shader_attributes = gl_get_shader_attributes, + .max_buffer_age = 5, // Why? +}; + +PFNEGLGETDISPLAYDRIVERNAMEPROC eglGetDisplayDriverName; +/** + * Check if a GLX extension exists. + */ +static inline bool egl_has_extension(EGLDisplay dpy, const char *ext) { + const char *egl_exts = eglQueryString(dpy, EGL_EXTENSIONS); + if (!egl_exts) { + log_error("Failed get EGL extension list."); + return false; + } + + auto inlen = strlen(ext); + const char *curr = egl_exts; + bool match = false; + while (curr && !match) { + const char *end = strchr(curr, ' '); + if (!end) { + // Last extension string + match = strcmp(ext, curr) == 0; + } else if (curr + inlen == end) { + // Length match, do match string + match = strncmp(ext, curr, (unsigned long)(end - curr)) == 0; + } + curr = end ? end + 1 : NULL; + } + + if (!match) { + log_info("Missing EGL extension %s.", ext); + } else { + log_info("Found EGL extension %s.", ext); + } + + return match; +} + +struct eglext_info eglext = {0}; + +void eglext_init(EGLDisplay dpy) { + if (eglext.initialized) { + return; + } + eglext.initialized = true; +#define check_ext(name) eglext.has_##name = egl_has_extension(dpy, #name) + check_ext(EGL_EXT_buffer_age); + check_ext(EGL_EXT_create_context_robustness); + check_ext(EGL_KHR_image_pixmap); +#ifdef EGL_MESA_query_driver + check_ext(EGL_MESA_query_driver); +#endif +#undef check_ext + + // Checking if the returned function pointer is NULL is not really necessary, + // or maybe not even useful, since eglGetProcAddress might always return + // something. We are doing it just for completeness' sake. + +#ifdef EGL_MESA_query_driver + eglGetDisplayDriverName = + (PFNEGLGETDISPLAYDRIVERNAMEPROC)eglGetProcAddress("eglGetDisplayDriverName"); + if (!eglGetDisplayDriverName) { + eglext.has_EGL_MESA_query_driver = false; + } +#endif +} diff --git a/src/backend/gl/egl.h b/src/backend/gl/egl.h new file mode 100644 index 0000000..171b173 --- /dev/null +++ b/src/backend/gl/egl.h @@ -0,0 +1,33 @@ +// SPDX-License-Identifier: MPL-2.0 +// Copyright (c) Yuxuan Shui <[email protected]> +#pragma once +#include <stdbool.h> +// Older version of glx.h defines function prototypes for these extensions... +// Rename them to avoid conflicts +#include <EGL/egl.h> +#include <EGL/eglext.h> +#include <GL/gl.h> +#include <GL/glext.h> +#include <xcb/render.h> +#include <xcb/xcb.h> + +#include "compiler.h" +#include "log.h" +#include "utils.h" +#include "x.h" + +struct eglext_info { + bool initialized; + bool has_EGL_MESA_query_driver; + bool has_EGL_EXT_buffer_age; + bool has_EGL_EXT_create_context_robustness; + bool has_EGL_KHR_image_pixmap; +}; + +extern struct eglext_info eglext; + +#ifdef EGL_MESA_query_driver +extern PFNEGLGETDISPLAYDRIVERNAMEPROC eglGetDisplayDriverName; +#endif + +void eglext_init(EGLDisplay); diff --git a/src/backend/gl/gl_common.c b/src/backend/gl/gl_common.c index 8cc5a05..a7d2aab 100644 --- a/src/backend/gl/gl_common.c +++ b/src/backend/gl/gl_common.c @@ -2,10 +2,10 @@ // Copyright (c) Yuxuan Shui <[email protected]> #include <GL/gl.h> #include <GL/glext.h> -#include <locale.h> #include <stdbool.h> #include <stdio.h> #include <string.h> +#include <time.h> #include <xcb/render.h> // for xcb_render_fixed_t, XXX #include "backend/backend.h" @@ -22,51 +22,6 @@ #include "backend/backend_common.h" #include "backend/gl/gl_common.h" -#define GLSL(version, ...) "#version " #version "\n" #__VA_ARGS__ -#define QUOTE(...) #__VA_ARGS__ - -static const GLuint vert_coord_loc = 0; -static const GLuint vert_in_texcoord_loc = 1; - -struct gl_blur_context { - enum blur_method method; - gl_blur_shader_t *blur_shader; - - /// Temporary textures used for blurring - GLuint *blur_textures; - int blur_texture_count; - /// Temporary fbos used for blurring - GLuint *blur_fbos; - int blur_fbo_count; - - /// Cached dimensions of each blur_texture. They are the same size as the target, - /// so they are always big enough without resizing. - /// Turns out calling glTexImage to resize is expensive, so we avoid that. - struct texture_size { - int width; - int height; - } * texture_sizes; - - /// Cached dimensions of the offscreen framebuffer. It's the same size as the - /// target but is expanded in either direction by resize_width / resize_height. - int fb_width, fb_height; - - /// How much do we need to resize the damaged region for blurring. - int resize_width, resize_height; - - int npasses; -}; - -static GLint glGetUniformLocationChecked(GLuint p, const char *name) { - auto ret = glGetUniformLocation(p, name); - if (ret < 0) { - log_info("Failed to get location of uniform '%s'. This is normal when " - "using custom shaders.", - name); - } - return ret; -} - GLuint gl_create_shader(GLenum shader_type, const char *shader_str) { log_trace("===\n%s\n===", shader_str); @@ -83,7 +38,7 @@ GLuint gl_create_shader(GLenum shader_type, const char *shader_str) { { GLint status = GL_FALSE; glGetShaderiv(shader, GL_COMPILE_STATUS, &status); - if (GL_FALSE == status) { + if (status == GL_FALSE) { GLint log_len = 0; glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_len); if (log_len) { @@ -103,6 +58,7 @@ end: glDeleteShader(shader); shader = 0; } + gl_check_err(); return shader; } @@ -115,15 +71,16 @@ GLuint gl_create_program(const GLuint *const shaders, int nshaders) { goto end; } - for (int i = 0; i < nshaders; ++i) + for (int i = 0; i < nshaders; ++i) { glAttachShader(program, shaders[i]); + } glLinkProgram(program); // Get program status { GLint status = GL_FALSE; glGetProgramiv(program, GL_LINK_STATUS, &status); - if (GL_FALSE == status) { + if (status == GL_FALSE) { GLint log_len = 0; glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_len); if (log_len) { @@ -138,59 +95,83 @@ GLuint gl_create_program(const GLuint *const shaders, int nshaders) { end: if (program) { - for (int i = 0; i < nshaders; ++i) + for (int i = 0; i < nshaders; ++i) { glDetachShader(program, shaders[i]); + } } if (program && !success) { glDeleteProgram(program); program = 0; } + gl_check_err(); return program; } /** - * @brief Create a program from vertex and fragment shader strings. + * @brief Create a program from NULL-terminated arrays of vertex and fragment shader + * strings. */ -GLuint gl_create_program_from_str(const char *vert_shader_str, const char *frag_shader_str) { - GLuint vert_shader = 0; - GLuint frag_shader = 0; - GLuint prog = 0; - - if (vert_shader_str) - vert_shader = gl_create_shader(GL_VERTEX_SHADER, vert_shader_str); - if (frag_shader_str) - frag_shader = gl_create_shader(GL_FRAGMENT_SHADER, frag_shader_str); +GLuint gl_create_program_from_strv(const char **vert_shaders, const char **frag_shaders) { + int vert_count, frag_count; + for (vert_count = 0; vert_shaders && vert_shaders[vert_count]; ++vert_count) { + } + for (frag_count = 0; frag_shaders && frag_shaders[frag_count]; ++frag_count) { + } - { - GLuint shaders[2]; - int count = 0; - if (vert_shader) { - shaders[count++] = vert_shader; - } - if (frag_shader) { - shaders[count++] = frag_shader; + GLuint prog = 0; + auto shaders = (GLuint *)ccalloc(vert_count + frag_count, GLuint); + for (int i = 0; i < vert_count; ++i) { + shaders[i] = gl_create_shader(GL_VERTEX_SHADER, vert_shaders[i]); + if (shaders[i] == 0) { + goto out; } - if (count) { - prog = gl_create_program(shaders, count); + } + for (int i = 0; i < frag_count; ++i) { + shaders[vert_count + i] = + gl_create_shader(GL_FRAGMENT_SHADER, frag_shaders[i]); + if (shaders[vert_count + i] == 0) { + goto out; } } - if (vert_shader) - glDeleteShader(vert_shader); - if (frag_shader) - glDeleteShader(frag_shader); + prog = gl_create_program(shaders, vert_count + frag_count); + +out: + for (int i = 0; i < vert_count + frag_count; ++i) { + if (shaders[i] != 0) { + glDeleteShader(shaders[i]); + } + } + free(shaders); + gl_check_err(); return prog; } -static void gl_free_prog_main(gl_win_shader_t *pprogram) { - if (!pprogram) +/** + * @brief Create a program from vertex and fragment shader strings. + */ +GLuint gl_create_program_from_str(const char *vert_shader_str, const char *frag_shader_str) { + const char *vert_shaders[2] = {vert_shader_str, NULL}; + const char *frag_shaders[2] = {frag_shader_str, NULL}; + + return gl_create_program_from_strv(vert_shaders, frag_shaders); +} + +void gl_destroy_window_shader(backend_t *backend_data attr_unused, void *shader) { + if (!shader) { return; + } + + auto pprogram = (gl_win_shader_t *)shader; if (pprogram->prog) { glDeleteProgram(pprogram->prog); pprogram->prog = 0; } + gl_check_err(); + + free(shader); } /* @@ -368,9 +349,15 @@ static GLuint gl_average_texture_color(backend_t *base, struct backend_image *im * @param reg_visible ignored */ static void _gl_compose(backend_t *base, struct backend_image *img, GLuint target, - GLint *coord, GLuint *indices, int nrects) { + struct backend_image *mask, coord_t mask_offset, GLint *coord, + GLuint *indices, int nrects) { + // FIXME(yshui) breaks when `mask` and `img` doesn't have the same y_inverted + // value. but we don't ever hit this problem because all of our + // images and masks are y_inverted. auto gd = (struct gl_data *)base; auto inner = (struct gl_texture *)img->inner; + auto mask_texture = + mask ? ((struct gl_texture *)mask->inner)->texture : gd->default_mask_texture; if (!img || !inner->texture) { log_error("Missing texture."); return; @@ -381,27 +368,64 @@ static void _gl_compose(backend_t *base, struct backend_image *img, GLuint targe brightness = gl_average_texture_color(base, img); } - assert(gd->win_shader.prog); - glUseProgram(gd->win_shader.prog); - if (gd->win_shader.unifm_opacity >= 0) { - glUniform1f(gd->win_shader.unifm_opacity, (float)img->opacity); + auto win_shader = inner->shader; + if (!win_shader) { + win_shader = gd->default_shader; } - if (gd->win_shader.unifm_invert_color >= 0) { - glUniform1i(gd->win_shader.unifm_invert_color, img->color_inverted); + + assert(win_shader); + assert(win_shader->prog); + glUseProgram(win_shader->prog); + if (win_shader->uniform_opacity >= 0) { + glUniform1f(win_shader->uniform_opacity, (float)img->opacity); + } + if (win_shader->uniform_invert_color >= 0) { + glUniform1i(win_shader->uniform_invert_color, img->color_inverted); + } + if (win_shader->uniform_tex >= 0) { + glUniform1i(win_shader->uniform_tex, 0); } - if (gd->win_shader.unifm_tex >= 0) { - glUniform1i(gd->win_shader.unifm_tex, 0); + if (win_shader->uniform_dim >= 0) { + glUniform1f(win_shader->uniform_dim, (float)img->dim); } - if (gd->win_shader.unifm_dim >= 0) { - glUniform1f(gd->win_shader.unifm_dim, (float)img->dim); + if (win_shader->uniform_brightness >= 0) { + glUniform1i(win_shader->uniform_brightness, 1); } - if (gd->win_shader.unifm_brightness >= 0) { - glUniform1i(gd->win_shader.unifm_brightness, 1); + if (win_shader->uniform_max_brightness >= 0) { + glUniform1f(win_shader->uniform_max_brightness, (float)img->max_brightness); } - if (gd->win_shader.unifm_max_brightness >= 0) { - glUniform1f(gd->win_shader.unifm_max_brightness, (float)img->max_brightness); + if (win_shader->uniform_corner_radius >= 0) { + glUniform1f(win_shader->uniform_corner_radius, (float)img->corner_radius); + } + if (win_shader->uniform_border_width >= 0) { + auto border_width = img->border_width; + if (border_width > img->corner_radius) { + border_width = 0; + } + glUniform1f(win_shader->uniform_border_width, (float)border_width); + } + if (win_shader->uniform_time >= 0) { + struct timespec ts; + clock_gettime(CLOCK_MONOTONIC, &ts); + glUniform1f(win_shader->uniform_time, + (float)ts.tv_sec * 1000.0F + (float)ts.tv_nsec / 1.0e6F); + } + + glUniform1i(win_shader->uniform_mask_tex, 2); + glUniform2f(win_shader->uniform_mask_offset, (float)mask_offset.x, + (float)mask_offset.y); + if (mask != NULL) { + glUniform1i(win_shader->uniform_mask_inverted, mask->color_inverted); + glUniform1f(win_shader->uniform_mask_corner_radius, + (GLfloat)mask->corner_radius); + } else { + glUniform1i(win_shader->uniform_mask_inverted, 0); + glUniform1f(win_shader->uniform_mask_corner_radius, 0); } + glActiveTexture(GL_TEXTURE2); + glBindTexture(GL_TEXTURE_2D, mask_texture); + // log_trace("Draw: %d, %d, %d, %d -> %d, %d (%d, %d) z %d\n", // x, y, width, height, dx, dy, ptex->width, ptex->height, z); @@ -437,6 +461,11 @@ static void _gl_compose(backend_t *base, struct backend_image *img, GLuint targe glDeleteVertexArrays(1, &vao); // Cleanup + glActiveTexture(GL_TEXTURE2); + glBindTexture(GL_TEXTURE_2D, 0); + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, 0); + glActiveTexture(GL_TEXTURE0); glBindTexture(GL_TEXTURE_2D, 0); glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); glDrawBuffer(GL_BACK); @@ -454,19 +483,18 @@ static void _gl_compose(backend_t *base, struct backend_image *img, GLuint targe /// Convert rectangles in X coordinates to OpenGL vertex and texture coordinates /// @param[in] nrects, rects rectangles -/// @param[in] dst_x, dst_y origin of the OpenGL texture, affect the calculated texture +/// @param[in] image_dst origin of the OpenGL texture, affect the calculated texture /// coordinates +/// @param[in] extend_height height of the drawing extent /// @param[in] texture_height height of the OpenGL texture /// @param[in] root_height height of the back buffer /// @param[in] y_inverted whether the texture is y inverted /// @param[out] coord, indices output -static void -x_rect_to_coords(int nrects, const rect_t *rects, int dst_x, int dst_y, int texture_height, - int root_height, bool y_inverted, GLint *coord, GLuint *indices) { - dst_y = root_height - dst_y; - if (y_inverted) { - dst_y -= texture_height; - } +void x_rect_to_coords(int nrects, const rect_t *rects, coord_t image_dst, + int extent_height, int texture_height, int root_height, + bool y_inverted, GLint *coord, GLuint *indices) { + image_dst.y = root_height - image_dst.y; + image_dst.y -= extent_height; for (int i = 0; i < nrects; i++) { // Y-flip. Note after this, crect.y1 > crect.y2 @@ -476,7 +504,8 @@ x_rect_to_coords(int nrects, const rect_t *rects, int dst_x, int dst_y, int text // Calculate texture coordinates // (texture_x1, texture_y1), texture coord for the _bottom left_ corner - GLint texture_x1 = crect.x1 - dst_x, texture_y1 = crect.y2 - dst_y, + GLint texture_x1 = crect.x1 - image_dst.x, + texture_y1 = crect.y2 - image_dst.y, texture_x2 = texture_x1 + (crect.x2 - crect.x1), texture_y2 = texture_y1 + (crect.y1 - crect.y2); @@ -516,9 +545,9 @@ x_rect_to_coords(int nrects, const rect_t *rects, int dst_x, int dst_y, int text } // TODO(yshui) make use of reg_visible -void gl_compose(backend_t *base, void *image_data, - int dst_x1, int dst_y1, int dst_x2, int dst_y2, - const region_t *reg_tgt, const region_t *reg_visible attr_unused) { +void gl_compose(backend_t *base, void *image_data, coord_t image_dst, void *mask, + coord_t mask_dst, const region_t *reg_tgt, + const region_t *reg_visible attr_unused) { auto gd = (struct gl_data *)base; struct backend_image *img = image_data; auto inner = (struct gl_texture *)img->inner; @@ -541,373 +570,43 @@ void gl_compose(backend_t *base, void *image_data, auto coord = ccalloc(nrects * 16, GLint); auto indices = ccalloc(nrects * 6, GLuint); - x_rect_to_coords(nrects, rects, dst_x1, dst_y1, inner->height, gd->height, - inner->y_inverted, coord, indices); - - // Interpolate the texture coordinates into the specified range - for (unsigned int i = 2; i < 16; i+=4) { - coord[i+0] = lerp_range(0, dst_x2 - dst_x1, 0, inner->width, coord[i+0]); - coord[i+1] = lerp_range(0, dst_y2 - dst_y1, 0, inner->height, coord[i+1]); - } - - _gl_compose(base, img, gd->back_fbo, coord, indices, nrects); + coord_t mask_offset = {.x = mask_dst.x - image_dst.x, .y = mask_dst.y - image_dst.y}; + x_rect_to_coords(nrects, rects, image_dst, inner->height, inner->height, + gd->height, inner->y_inverted, coord, indices); + _gl_compose(base, img, gd->back_fbo, mask, mask_offset, coord, indices, nrects); free(indices); free(coord); } /** - * Blur contents in a particular region. - */ -bool gl_kernel_blur(backend_t *base, double opacity, void *ctx, const rect_t *extent, - const GLuint vao[2], const int vao_nelems[2]) { - auto bctx = (struct gl_blur_context *)ctx; - auto gd = (struct gl_data *)base; - - int dst_y_fb_coord = bctx->fb_height - extent->y2; - - int curr = 0; - for (int i = 0; i < bctx->npasses; ++i) { - const gl_blur_shader_t *p = &bctx->blur_shader[i]; - assert(p->prog); - - assert(bctx->blur_textures[curr]); - - // The origin to use when sampling from the source texture - GLint texorig_x = extent->x1, texorig_y = dst_y_fb_coord; - GLint tex_width, tex_height; - GLuint src_texture; - - if (i == 0) { - src_texture = gd->back_texture; - tex_width = gd->width; - tex_height = gd->height; - } else { - src_texture = bctx->blur_textures[curr]; - auto src_size = bctx->texture_sizes[curr]; - tex_width = src_size.width; - tex_height = src_size.height; - } - - glBindTexture(GL_TEXTURE_2D, src_texture); - glUseProgram(p->prog); - glUniform2f(p->unifm_pixel_norm, 1.0f / (GLfloat)tex_width, - 1.0f / (GLfloat)tex_height); - - // The number of indices in the selected vertex array - GLsizei nelems; - - if (i < bctx->npasses - 1) { - assert(bctx->blur_fbos[0]); - assert(bctx->blur_textures[!curr]); - - // not last pass, draw into framebuffer, with resized regions - glBindVertexArray(vao[1]); - nelems = vao_nelems[1]; - glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[0]); - - glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, - GL_TEXTURE_2D, bctx->blur_textures[!curr], 0); - glDrawBuffer(GL_COLOR_ATTACHMENT0); - if (!gl_check_fb_complete(GL_FRAMEBUFFER)) { - return false; - } - - glUniform1f(p->unifm_opacity, 1.0); - } else { - // last pass, draw directly into the back buffer, with origin - // regions - glBindVertexArray(vao[0]); - nelems = vao_nelems[0]; - glBindFramebuffer(GL_FRAMEBUFFER, gd->back_fbo); - - glUniform1f(p->unifm_opacity, (float)opacity); - } - - glUniform2f(p->texorig_loc, (GLfloat)texorig_x, (GLfloat)texorig_y); - glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); - - // XXX use multiple draw calls is probably going to be slow than - // just simply blur the whole area. - - curr = !curr; - } - - return true; -} - -bool gl_dual_kawase_blur(backend_t *base, double opacity, void *ctx, const rect_t *extent, - const GLuint vao[2], const int vao_nelems[2]) { - auto bctx = (struct gl_blur_context *)ctx; - auto gd = (struct gl_data *)base; - - int dst_y_fb_coord = bctx->fb_height - extent->y2; - - int iterations = bctx->blur_texture_count; - int scale_factor = 1; - - // Kawase downsample pass - const gl_blur_shader_t *down_pass = &bctx->blur_shader[0]; - assert(down_pass->prog); - glUseProgram(down_pass->prog); - - glUniform2f(down_pass->texorig_loc, (GLfloat)extent->x1, (GLfloat)dst_y_fb_coord); - - for (int i = 0; i < iterations; ++i) { - // Scale output width / height by half in each iteration - scale_factor <<= 1; - - GLuint src_texture; - int tex_width, tex_height; - - if (i == 0) { - // first pass: copy from back buffer - src_texture = gd->back_texture; - tex_width = gd->width; - tex_height = gd->height; - } else { - // copy from previous pass - src_texture = bctx->blur_textures[i - 1]; - auto src_size = bctx->texture_sizes[i - 1]; - tex_width = src_size.width; - tex_height = src_size.height; - } - - assert(src_texture); - assert(bctx->blur_fbos[i]); - - glBindTexture(GL_TEXTURE_2D, src_texture); - glBindVertexArray(vao[1]); - auto nelems = vao_nelems[1]; - glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i]); - glDrawBuffer(GL_COLOR_ATTACHMENT0); - - glUniform1f(down_pass->scale_loc, (GLfloat)scale_factor); - - glUniform2f(down_pass->unifm_pixel_norm, 1.0f / (GLfloat)tex_width, - 1.0f / (GLfloat)tex_height); - - glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); - } - - // Kawase upsample pass - const gl_blur_shader_t *up_pass = &bctx->blur_shader[1]; - assert(up_pass->prog); - glUseProgram(up_pass->prog); - - glUniform2f(up_pass->texorig_loc, (GLfloat)extent->x1, (GLfloat)dst_y_fb_coord); - - for (int i = iterations - 1; i >= 0; --i) { - // Scale output width / height back by two in each iteration - scale_factor >>= 1; - - const GLuint src_texture = bctx->blur_textures[i]; - assert(src_texture); - - // Calculate normalized half-width/-height of a src pixel - auto src_size = bctx->texture_sizes[i]; - int tex_width = src_size.width; - int tex_height = src_size.height; - - // The number of indices in the selected vertex array - GLsizei nelems; - - glBindTexture(GL_TEXTURE_2D, src_texture); - if (i > 0) { - assert(bctx->blur_fbos[i - 1]); - - // not last pass, draw into next framebuffer - glBindVertexArray(vao[1]); - nelems = vao_nelems[1]; - glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i - 1]); - glDrawBuffer(GL_COLOR_ATTACHMENT0); - - glUniform1f(up_pass->unifm_opacity, (GLfloat)1); - } else { - // last pass, draw directly into the back buffer - glBindVertexArray(vao[0]); - nelems = vao_nelems[0]; - glBindFramebuffer(GL_FRAMEBUFFER, gd->back_fbo); - - glUniform1f(up_pass->unifm_opacity, (GLfloat)opacity); - } - - glUniform1f(up_pass->scale_loc, (GLfloat)scale_factor); - glUniform2f(up_pass->unifm_pixel_norm, 1.0f / (GLfloat)tex_width, - 1.0f / (GLfloat)tex_height); - - glDrawElements(GL_TRIANGLES, nelems, GL_UNSIGNED_INT, NULL); - } - - return true; -} - -bool gl_blur(backend_t *base, double opacity, void *ctx, const region_t *reg_blur, - const region_t *reg_visible attr_unused) { - auto bctx = (struct gl_blur_context *)ctx; - auto gd = (struct gl_data *)base; - - bool ret = false; - - if (gd->width != bctx->fb_width || gd->height != bctx->fb_height) { - // Resize the temporary textures used for blur in case the root - // size changed - bctx->fb_width = gd->width; - bctx->fb_height = gd->height; - - for (int i = 0; i < bctx->blur_texture_count; ++i) { - auto tex_size = bctx->texture_sizes + i; - if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { - // Use smaller textures for each iteration (quarter of the - // previous texture) - tex_size->width = 1 + ((bctx->fb_width - 1) >> (i + 1)); - tex_size->height = 1 + ((bctx->fb_height - 1) >> (i + 1)); - } else { - tex_size->width = bctx->fb_width; - tex_size->height = bctx->fb_height; - } - - glBindTexture(GL_TEXTURE_2D, bctx->blur_textures[i]); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_size->width, - tex_size->height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL); - - if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { - // Attach texture to FBO target - glBindFramebuffer(GL_DRAW_FRAMEBUFFER, bctx->blur_fbos[i]); - glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, - GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, - bctx->blur_textures[i], 0); - if (!gl_check_fb_complete(GL_FRAMEBUFFER)) { - glBindFramebuffer(GL_FRAMEBUFFER, 0); - return false; - } - } - } - glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); - } - - // Remainder: regions are in Xorg coordinates - auto reg_blur_resized = - resize_region(reg_blur, bctx->resize_width, bctx->resize_height); - const rect_t *extent = pixman_region32_extents((region_t *)reg_blur), - *extent_resized = pixman_region32_extents(®_blur_resized); - int width = extent->x2 - extent->x1, height = extent->y2 - extent->y1; - if (width == 0 || height == 0) { - return true; - } - - int nrects, nrects_resized; - const rect_t *rects = pixman_region32_rectangles((region_t *)reg_blur, &nrects), - *rects_resized = - pixman_region32_rectangles(®_blur_resized, &nrects_resized); - if (!nrects || !nrects_resized) { - return true; - } - - auto coord = ccalloc(nrects * 16, GLint); - auto indices = ccalloc(nrects * 6, GLuint); - x_rect_to_coords(nrects, rects, extent_resized->x1, extent_resized->y2, - bctx->fb_height, gd->height, false, coord, indices); - - auto coord_resized = ccalloc(nrects_resized * 16, GLint); - auto indices_resized = ccalloc(nrects_resized * 6, GLuint); - x_rect_to_coords(nrects_resized, rects_resized, extent_resized->x1, - extent_resized->y2, bctx->fb_height, bctx->fb_height, false, - coord_resized, indices_resized); - pixman_region32_fini(®_blur_resized); - - GLuint vao[2]; - glGenVertexArrays(2, vao); - GLuint bo[4]; - glGenBuffers(4, bo); - - glBindVertexArray(vao[0]); - glBindBuffer(GL_ARRAY_BUFFER, bo[0]); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bo[1]); - glBufferData(GL_ARRAY_BUFFER, (long)sizeof(*coord) * nrects * 16, coord, GL_STATIC_DRAW); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, (long)sizeof(*indices) * nrects * 6, - indices, GL_STATIC_DRAW); - glEnableVertexAttribArray(vert_coord_loc); - glEnableVertexAttribArray(vert_in_texcoord_loc); - glVertexAttribPointer(vert_coord_loc, 2, GL_INT, GL_FALSE, sizeof(GLint) * 4, NULL); - glVertexAttribPointer(vert_in_texcoord_loc, 2, GL_INT, GL_FALSE, - sizeof(GLint) * 4, (void *)(sizeof(GLint) * 2)); - - glBindVertexArray(vao[1]); - glBindBuffer(GL_ARRAY_BUFFER, bo[2]); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bo[3]); - glBufferData(GL_ARRAY_BUFFER, (long)sizeof(*coord_resized) * nrects_resized * 16, - coord_resized, GL_STATIC_DRAW); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, - (long)sizeof(*indices_resized) * nrects_resized * 6, indices_resized, - GL_STATIC_DRAW); - glEnableVertexAttribArray(vert_coord_loc); - glEnableVertexAttribArray(vert_in_texcoord_loc); - glVertexAttribPointer(vert_coord_loc, 2, GL_INT, GL_FALSE, sizeof(GLint) * 4, NULL); - glVertexAttribPointer(vert_in_texcoord_loc, 2, GL_INT, GL_FALSE, - sizeof(GLint) * 4, (void *)(sizeof(GLint) * 2)); - - int vao_nelems[2] = {nrects * 6, nrects_resized * 6}; - - if (bctx->method == BLUR_METHOD_DUAL_KAWASE) { - ret = gl_dual_kawase_blur(base, opacity, ctx, extent_resized, vao, vao_nelems); - } else { - ret = gl_kernel_blur(base, opacity, ctx, extent_resized, vao, vao_nelems); - } - - glBindFramebuffer(GL_FRAMEBUFFER, 0); - glBindTexture(GL_TEXTURE_2D, 0); - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - glDeleteBuffers(4, bo); - glBindVertexArray(0); - glDeleteVertexArrays(2, vao); - glUseProgram(0); - - free(indices); - free(coord); - free(indices_resized); - free(coord_resized); - - gl_check_err(); - return ret; -} - -// clang-format off -const char *vertex_shader = GLSL(330, - uniform mat4 projection; - uniform float scale = 1.0; - uniform vec2 texorig; - layout(location = 0) in vec2 coord; - layout(location = 1) in vec2 in_texcoord; - out vec2 texcoord; - void main() { - gl_Position = projection * vec4(coord, 0, scale); - texcoord = in_texcoord + texorig; - } -); -// clang-format on - -/** * Load a GLSL main program from shader strings. */ -static int gl_win_shader_from_string(const char *vshader_str, const char *fshader_str, - gl_win_shader_t *ret) { +static bool gl_win_shader_from_stringv(const char **vshader_strv, + const char **fshader_strv, gl_win_shader_t *ret) { // Build program - ret->prog = gl_create_program_from_str(vshader_str, fshader_str); + ret->prog = gl_create_program_from_strv(vshader_strv, fshader_strv); if (!ret->prog) { log_error("Failed to create GLSL program."); - return -1; + gl_check_err(); + return false; } // Get uniform addresses - ret->unifm_opacity = glGetUniformLocationChecked(ret->prog, "opacity"); - ret->unifm_invert_color = glGetUniformLocationChecked(ret->prog, "invert_color"); - ret->unifm_tex = glGetUniformLocationChecked(ret->prog, "tex"); - ret->unifm_dim = glGetUniformLocationChecked(ret->prog, "dim"); - ret->unifm_brightness = glGetUniformLocationChecked(ret->prog, "brightness"); - ret->unifm_max_brightness = - glGetUniformLocationChecked(ret->prog, "max_brightness"); + bind_uniform(ret, opacity); + bind_uniform(ret, invert_color); + bind_uniform(ret, tex); + bind_uniform(ret, dim); + bind_uniform(ret, brightness); + bind_uniform(ret, max_brightness); + bind_uniform(ret, corner_radius); + bind_uniform(ret, border_width); + bind_uniform(ret, time); + + bind_uniform(ret, mask_tex); + bind_uniform(ret, mask_offset); + bind_uniform(ret, mask_inverted); + bind_uniform(ret, mask_corner_radius); gl_check_err(); @@ -934,51 +633,6 @@ void gl_resize(struct gl_data *gd, int width, int height) { gl_check_err(); } -// clang-format off -static const char dummy_frag[] = GLSL(330, - uniform sampler2D tex; - in vec2 texcoord; - void main() { - gl_FragColor = texelFetch(tex, ivec2(texcoord.xy), 0); - } -); - -static const char fill_frag[] = GLSL(330, - uniform vec4 color; - void main() { - gl_FragColor = color; - } -); - -static const char fill_vert[] = GLSL(330, - layout(location = 0) in vec2 in_coord; - uniform mat4 projection; - void main() { - gl_Position = projection * vec4(in_coord, 0, 1); - } -); - -static const char interpolating_frag[] = GLSL(330, - uniform sampler2D tex; - in vec2 texcoord; - void main() { - gl_FragColor = vec4(texture2D(tex, vec2(texcoord.xy), 0).rgb, 1); - } -); - -static const char interpolating_vert[] = GLSL(330, - uniform mat4 projection; - uniform vec2 texsize; - layout(location = 0) in vec2 in_coord; - layout(location = 1) in vec2 in_texcoord; - out vec2 texcoord; - void main() { - gl_Position = projection * vec4(in_coord, 0, 1); - texcoord = in_texcoord / texsize; - } -); -// clang-format on - /// Fill a given region in bound framebuffer. /// @param[in] y_inverted whether the y coordinates in `clip` should be inverted static void _gl_fill(backend_t *base, struct color c, const region_t *clip, GLuint target, @@ -1048,9 +702,45 @@ void gl_fill(backend_t *base, struct color c, const region_t *clip) { return _gl_fill(base, c, clip, gd->back_fbo, gd->height, true); } +void *gl_make_mask(backend_t *base, geometry_t size, const region_t *reg) { + auto tex = ccalloc(1, struct gl_texture); + auto img = default_new_backend_image(size.width, size.height); + tex->width = size.width; + tex->height = size.height; + tex->texture = gl_new_texture(GL_TEXTURE_2D); + tex->has_alpha = false; + tex->y_inverted = true; + img->inner = (struct backend_image_inner_base *)tex; + img->inner->refcount = 1; + + glBindTexture(GL_TEXTURE_2D, tex->texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, size.width, size.height, 0, GL_RED, + GL_UNSIGNED_BYTE, NULL); + glBindTexture(GL_TEXTURE_2D, 0); + + GLuint fbo; + glBlendFunc(GL_ONE, GL_ZERO); + glGenFramebuffers(1, &fbo); + glBindFramebuffer(GL_FRAMEBUFFER, fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, + tex->texture, 0); + glDrawBuffer(GL_COLOR_ATTACHMENT0); + glClearColor(0, 0, 0, 1); + glClear(GL_COLOR_BUFFER_BIT); + _gl_fill(base, (struct color){1, 1, 1, 1}, reg, fbo, size.height, false); + glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); + glDeleteFramebuffers(1, &fbo); + return img; +} + static void gl_release_image_inner(backend_t *base, struct gl_texture *inner) { auto gd = (struct gl_data *)base; - gd->release_user_data(base, inner); + if (inner->user_data) { + gd->release_user_data(base, inner); + } assert(inner->user_data == NULL); glDeleteTextures(1, &inner->texture); @@ -1070,513 +760,44 @@ void gl_release_image(backend_t *base, void *image_data) { free(wd); } -static inline void gl_free_blur_shader(gl_blur_shader_t *shader) { - if (shader->prog) { - glDeleteProgram(shader->prog); - } +void *gl_create_window_shader(backend_t *backend_data attr_unused, const char *source) { + auto win_shader = (gl_win_shader_t *)ccalloc(1, gl_win_shader_t); - shader->prog = 0; -} + const char *vert_shaders[2] = {vertex_shader, NULL}; + const char *frag_shaders[4] = {win_shader_glsl, masking_glsl, source, NULL}; -void gl_destroy_blur_context(backend_t *base attr_unused, void *ctx) { - auto bctx = (struct gl_blur_context *)ctx; - // Free GLSL shaders/programs - for (int i = 0; i < bctx->npasses; ++i) { - gl_free_blur_shader(&bctx->blur_shader[i]); + if (!gl_win_shader_from_stringv(vert_shaders, frag_shaders, win_shader)) { + free(win_shader); + return NULL; } - free(bctx->blur_shader); - if (bctx->blur_texture_count && bctx->blur_textures) { - glDeleteTextures(bctx->blur_texture_count, bctx->blur_textures); - free(bctx->blur_textures); - } - if (bctx->blur_texture_count && bctx->texture_sizes) { - free(bctx->texture_sizes); - } - if (bctx->blur_fbo_count && bctx->blur_fbos) { - glDeleteFramebuffers(bctx->blur_fbo_count, bctx->blur_fbos); - free(bctx->blur_fbos); - } - - bctx->blur_texture_count = 0; - bctx->blur_fbo_count = 0; - - free(bctx); - - gl_check_err(); -} - -/** - * Initialize GL blur filters. - */ -bool gl_create_kernel_blur_context(void *blur_context, GLfloat *projection, - enum blur_method method, void *args) { - bool success = false; - auto ctx = (struct gl_blur_context *)blur_context; - - struct conv **kernels; - - int nkernels; - ctx->method = BLUR_METHOD_KERNEL; - if (method == BLUR_METHOD_KERNEL) { - nkernels = ((struct kernel_blur_args *)args)->kernel_count; - kernels = ((struct kernel_blur_args *)args)->kernels; - } else { - kernels = generate_blur_kernel(method, args, &nkernels); - } - - if (!nkernels) { - ctx->method = BLUR_METHOD_NONE; - return true; - } - - // Specify required textures and FBOs - ctx->blur_texture_count = 2; - ctx->blur_fbo_count = 1; - - ctx->blur_shader = ccalloc(max2(2, nkernels), gl_blur_shader_t); - - char *lc_numeric_old = strdup(setlocale(LC_NUMERIC, NULL)); - // Enforce LC_NUMERIC locale "C" here to make sure decimal point is sane - // Thanks to hiciu for reporting. - setlocale(LC_NUMERIC, "C"); - - // clang-format off - static const char *FRAG_SHADER_BLUR = GLSL(330, - %s\n // other extension pragmas - uniform sampler2D tex_src; - uniform vec2 pixel_norm; - uniform float opacity; - in vec2 texcoord; - out vec4 out_color; - void main() { - vec2 uv = texcoord * pixel_norm; - vec4 sum = vec4(0.0, 0.0, 0.0, 0.0); - %s //body of the convolution - out_color = sum / float(%.7g) * opacity; - } - ); - static const char *FRAG_SHADER_BLUR_ADD = QUOTE( - sum += float(%.7g) * texture2D(tex_src, uv + pixel_norm * vec2(%.7g, %.7g)); - ); - // clang-format on - - const char *shader_add = FRAG_SHADER_BLUR_ADD; - char *extension = strdup(""); - - for (int i = 0; i < nkernels; i++) { - auto kern = kernels[i]; - // Build shader - int width = kern->w, height = kern->h; - int nele = width * height; - // '%.7g' is at most 14 characters, inserted 3 times - size_t body_len = (strlen(shader_add) + 42) * (uint)nele; - char *shader_body = ccalloc(body_len, char); - char *pc = shader_body; - - // Make use of the linear interpolation hardware by sampling 2 pixels with - // one texture access by sampling between both pixels based on their - // relative weight. Easiest done in a single dimension as 2D bilinear - // filtering would raise additional constraints on the kernels. Therefore - // only use interpolation along the larger dimension. - double sum = 0.0; - if (width > height) { - // use interpolation in x dimension (width) - for (int j = 0; j < height; ++j) { - for (int k = 0; k < width; k += 2) { - double val1, val2; - val1 = kern->data[j * width + k]; - val2 = (k + 1 < width) - ? kern->data[j * width + k + 1] - : 0; - - double combined_weight = val1 + val2; - if (combined_weight == 0) { - continue; - } - sum += combined_weight; - - double offset_x = - k + (val2 / combined_weight) - (width / 2); - double offset_y = j - (height / 2); - pc += snprintf( - pc, body_len - (ulong)(pc - shader_body), - shader_add, combined_weight, offset_x, offset_y); - assert(pc < shader_body + body_len); - } - } - } else { - // use interpolation in y dimension (height) - for (int j = 0; j < height; j += 2) { - for (int k = 0; k < width; ++k) { - double val1, val2; - val1 = kern->data[j * width + k]; - val2 = (j + 1 < height) - ? kern->data[(j + 1) * width + k] - : 0; - - double combined_weight = val1 + val2; - if (combined_weight == 0) { - continue; - } - sum += combined_weight; - - double offset_x = k - (width / 2); - double offset_y = - j + (val2 / combined_weight) - (height / 2); - pc += snprintf( - pc, body_len - (ulong)(pc - shader_body), - shader_add, combined_weight, offset_x, offset_y); - assert(pc < shader_body + body_len); - } - } - } - - auto pass = ctx->blur_shader + i; - size_t shader_len = strlen(FRAG_SHADER_BLUR) + strlen(extension) + - strlen(shader_body) + 10 /* sum */ + - 1 /* null terminator */; - char *shader_str = ccalloc(shader_len, char); - auto real_shader_len = snprintf(shader_str, shader_len, FRAG_SHADER_BLUR, - extension, shader_body, sum); - CHECK(real_shader_len >= 0); - CHECK((size_t)real_shader_len < shader_len); - free(shader_body); - - // Build program - pass->prog = gl_create_program_from_str(vertex_shader, shader_str); - free(shader_str); - if (!pass->prog) { - log_error("Failed to create GLSL program."); - success = false; - goto out; - } - glBindFragDataLocation(pass->prog, 0, "out_color"); - - // Get uniform addresses - pass->unifm_pixel_norm = - glGetUniformLocationChecked(pass->prog, "pixel_norm"); - pass->unifm_opacity = glGetUniformLocationChecked(pass->prog, "opacity"); - pass->texorig_loc = glGetUniformLocationChecked(pass->prog, "texorig"); - - // Setup projection matrix - glUseProgram(pass->prog); - int pml = glGetUniformLocationChecked(pass->prog, "projection"); - glUniformMatrix4fv(pml, 1, false, projection); - glUseProgram(0); - - ctx->resize_width += kern->w / 2; - ctx->resize_height += kern->h / 2; - } - - if (nkernels == 1) { - // Generate an extra null pass so we don't need special code path for - // the single pass case - auto pass = &ctx->blur_shader[1]; - pass->prog = gl_create_program_from_str(vertex_shader, dummy_frag); - pass->unifm_pixel_norm = -1; - pass->unifm_opacity = -1; - pass->texorig_loc = glGetUniformLocationChecked(pass->prog, "texorig"); - - // Setup projection matrix - glUseProgram(pass->prog); - int pml = glGetUniformLocationChecked(pass->prog, "projection"); - glUniformMatrix4fv(pml, 1, false, projection); - glUseProgram(0); - - ctx->npasses = 2; - } else { - ctx->npasses = nkernels; - } - - success = true; -out: - if (method != BLUR_METHOD_KERNEL) { - // We generated the blur kernels, so we need to free them - for (int i = 0; i < nkernels; i++) { - free(kernels[i]); - } - free(kernels); - } - - free(extension); - // Restore LC_NUMERIC - setlocale(LC_NUMERIC, lc_numeric_old); - free(lc_numeric_old); - - return success; -} - -bool gl_create_dual_kawase_blur_context(void *blur_context, GLfloat *projection, - enum blur_method method, void *args) { - bool success = false; - auto ctx = (struct gl_blur_context *)blur_context; - - ctx->method = method; - - auto blur_params = generate_dual_kawase_params(args); - - // Specify required textures and FBOs - ctx->blur_texture_count = blur_params->iterations; - ctx->blur_fbo_count = blur_params->iterations; - - ctx->resize_width += blur_params->expand; - ctx->resize_height += blur_params->expand; - - ctx->npasses = 2; - ctx->blur_shader = ccalloc(ctx->npasses, gl_blur_shader_t); - - char *lc_numeric_old = strdup(setlocale(LC_NUMERIC, NULL)); - // Enforce LC_NUMERIC locale "C" here to make sure decimal point is sane - // Thanks to hiciu for reporting. - setlocale(LC_NUMERIC, "C"); - - // Dual-kawase downsample shader / program - auto down_pass = ctx->blur_shader; - { - // clang-format off - static const char *FRAG_SHADER_DOWN = GLSL(330, - uniform sampler2D tex_src; - uniform float scale = 1.0; - uniform vec2 pixel_norm; - in vec2 texcoord; - out vec4 out_color; - void main() { - vec2 offset = %.7g * pixel_norm; - vec2 uv = texcoord * pixel_norm * (2.0 / scale); - vec4 sum = texture2D(tex_src, uv) * 4.0; - sum += texture2D(tex_src, uv - vec2(0.5, 0.5) * offset); - sum += texture2D(tex_src, uv + vec2(0.5, 0.5) * offset); - sum += texture2D(tex_src, uv + vec2(0.5, -0.5) * offset); - sum += texture2D(tex_src, uv - vec2(0.5, -0.5) * offset); - out_color = sum / 8.0; - } - ); - // clang-format on - - // Build shader - size_t shader_len = - strlen(FRAG_SHADER_DOWN) + 10 /* offset */ + 1 /* null terminator */; - char *shader_str = ccalloc(shader_len, char); - auto real_shader_len = - snprintf(shader_str, shader_len, FRAG_SHADER_DOWN, blur_params->offset); - CHECK(real_shader_len >= 0); - CHECK((size_t)real_shader_len < shader_len); - - // Build program - down_pass->prog = gl_create_program_from_str(vertex_shader, shader_str); - free(shader_str); - if (!down_pass->prog) { - log_error("Failed to create GLSL program."); - success = false; - goto out; - } - glBindFragDataLocation(down_pass->prog, 0, "out_color"); - - // Get uniform addresses - down_pass->unifm_pixel_norm = - glGetUniformLocationChecked(down_pass->prog, "pixel_norm"); - down_pass->texorig_loc = - glGetUniformLocationChecked(down_pass->prog, "texorig"); - down_pass->scale_loc = - glGetUniformLocationChecked(down_pass->prog, "scale"); - - // Setup projection matrix - glUseProgram(down_pass->prog); - int pml = glGetUniformLocationChecked(down_pass->prog, "projection"); - glUniformMatrix4fv(pml, 1, false, projection); - glUseProgram(0); - } - - // Dual-kawase upsample shader / program - auto up_pass = ctx->blur_shader + 1; - { - // clang-format off - static const char *FRAG_SHADER_UP = GLSL(330, - uniform sampler2D tex_src; - uniform float scale = 1.0; - uniform vec2 pixel_norm; - uniform float opacity; - in vec2 texcoord; - out vec4 out_color; - void main() { - vec2 offset = %.7g * pixel_norm; - vec2 uv = texcoord * pixel_norm / (2 * scale); - vec4 sum = texture2D(tex_src, uv + vec2(-1.0, 0.0) * offset); - sum += texture2D(tex_src, uv + vec2(-0.5, 0.5) * offset) * 2.0; - sum += texture2D(tex_src, uv + vec2(0.0, 1.0) * offset); - sum += texture2D(tex_src, uv + vec2(0.5, 0.5) * offset) * 2.0; - sum += texture2D(tex_src, uv + vec2(1.0, 0.0) * offset); - sum += texture2D(tex_src, uv + vec2(0.5, -0.5) * offset) * 2.0; - sum += texture2D(tex_src, uv + vec2(0.0, -1.0) * offset); - sum += texture2D(tex_src, uv + vec2(-0.5, -0.5) * offset) * 2.0; - out_color = sum / 12.0 * opacity; - } - ); - // clang-format on - - // Build shader - size_t shader_len = - strlen(FRAG_SHADER_UP) + 10 /* offset */ + 1 /* null terminator */; - char *shader_str = ccalloc(shader_len, char); - auto real_shader_len = - snprintf(shader_str, shader_len, FRAG_SHADER_UP, blur_params->offset); - CHECK(real_shader_len >= 0); - CHECK((size_t)real_shader_len < shader_len); - - // Build program - up_pass->prog = gl_create_program_from_str(vertex_shader, shader_str); - free(shader_str); - if (!up_pass->prog) { - log_error("Failed to create GLSL program."); - success = false; - goto out; - } - glBindFragDataLocation(up_pass->prog, 0, "out_color"); - - // Get uniform addresses - up_pass->unifm_pixel_norm = - glGetUniformLocationChecked(up_pass->prog, "pixel_norm"); - up_pass->unifm_opacity = - glGetUniformLocationChecked(up_pass->prog, "opacity"); - up_pass->texorig_loc = - glGetUniformLocationChecked(up_pass->prog, "texorig"); - up_pass->scale_loc = glGetUniformLocationChecked(up_pass->prog, "scale"); - - // Setup projection matrix - glUseProgram(up_pass->prog); - int pml = glGetUniformLocationChecked(up_pass->prog, "projection"); - glUniformMatrix4fv(pml, 1, false, projection); - glUseProgram(0); - } - - success = true; -out: - free(blur_params); - - if (!success) { - ctx = NULL; - } - - // Restore LC_NUMERIC - setlocale(LC_NUMERIC, lc_numeric_old); - free(lc_numeric_old); - - return success; -} - -void *gl_create_blur_context(backend_t *base, enum blur_method method, void *args) { - bool success; - auto gd = (struct gl_data *)base; - - auto ctx = ccalloc(1, struct gl_blur_context); - - if (!method || method >= BLUR_METHOD_INVALID) { - ctx->method = BLUR_METHOD_NONE; - return ctx; - } + GLint viewport_dimensions[2]; + glGetIntegerv(GL_MAX_VIEWPORT_DIMS, viewport_dimensions); // Set projection matrix to gl viewport dimensions so we can use screen // coordinates for all vertices // Note: OpenGL matrices are column major - GLint viewport_dimensions[2]; - glGetIntegerv(GL_MAX_VIEWPORT_DIMS, viewport_dimensions); - GLfloat projection_matrix[4][4] = {{2.0f / (GLfloat)viewport_dimensions[0], 0, 0, 0}, - {0, 2.0f / (GLfloat)viewport_dimensions[1], 0, 0}, + GLfloat projection_matrix[4][4] = {{2.0F / (GLfloat)viewport_dimensions[0], 0, 0, 0}, + {0, 2.0F / (GLfloat)viewport_dimensions[1], 0, 0}, {0, 0, 0, 0}, {-1, -1, 0, 1}}; - if (method == BLUR_METHOD_DUAL_KAWASE) { - success = gl_create_dual_kawase_blur_context(ctx, projection_matrix[0], - method, args); - } else { - success = - gl_create_kernel_blur_context(ctx, projection_matrix[0], method, args); - } - if (!success || ctx->method == BLUR_METHOD_NONE) { - goto out; - } - - // Texture size will be defined by gl_blur - ctx->blur_textures = ccalloc(ctx->blur_texture_count, GLuint); - ctx->texture_sizes = ccalloc(ctx->blur_texture_count, struct texture_size); - glGenTextures(ctx->blur_texture_count, ctx->blur_textures); - - for (int i = 0; i < ctx->blur_texture_count; ++i) { - glBindTexture(GL_TEXTURE_2D, ctx->blur_textures[i]); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - } - - // Generate FBO and textures when needed - ctx->blur_fbos = ccalloc(ctx->blur_fbo_count, GLuint); - glGenFramebuffers(ctx->blur_fbo_count, ctx->blur_fbos); - - for (int i = 0; i < ctx->blur_fbo_count; ++i) { - if (!ctx->blur_fbos[i]) { - log_error("Failed to generate framebuffer objects for blur"); - success = false; - goto out; - } - } - -out: - if (!success) { - gl_destroy_blur_context(&gd->base, ctx); - ctx = NULL; - } - - gl_check_err(); - return ctx; -} + int pml = glGetUniformLocationChecked(win_shader->prog, "projection"); + glUseProgram(win_shader->prog); + glUniformMatrix4fv(pml, 1, false, projection_matrix[0]); + glUseProgram(0); -void gl_get_blur_size(void *blur_context, int *width, int *height) { - auto ctx = (struct gl_blur_context *)blur_context; - *width = ctx->resize_width; - *height = ctx->resize_height; + return win_shader; } -// clang-format off -const char *win_shader_glsl = GLSL(330, - uniform float opacity; - uniform float dim; - uniform bool invert_color; - in vec2 texcoord; - uniform sampler2D tex; - uniform sampler2D brightness; - uniform float max_brightness; - - void main() { - vec4 c = texelFetch(tex, ivec2(texcoord), 0); - if (invert_color) { - c = vec4(c.aaa - c.rgb, c.a); - } - c = vec4(c.rgb * (1.0 - dim), c.a) * opacity; - - vec3 rgb_brightness = texelFetch(brightness, ivec2(0, 0), 0).rgb; - // Ref: https://en.wikipedia.org/wiki/Relative_luminance - float brightness = rgb_brightness.r * 0.21 + - rgb_brightness.g * 0.72 + - rgb_brightness.b * 0.07; - if (brightness > max_brightness) - c.rgb = c.rgb * (max_brightness / brightness); - - gl_FragColor = c; +uint64_t gl_get_shader_attributes(backend_t *backend_data attr_unused, void *shader) { + auto win_shader = (gl_win_shader_t *)shader; + uint64_t ret = 0; + if (glGetUniformLocation(win_shader->prog, "time") >= 0) { + ret |= SHADER_ATTRIBUTE_ANIMATED; } -); - -const char *present_vertex_shader = GLSL(330, - uniform mat4 projection; - layout(location = 0) in vec2 coord; - out vec2 texcoord; - void main() { - gl_Position = projection * vec4(coord, 0, 1); - texcoord = coord; - } -); -// clang-format on + return ret; +} bool gl_init(struct gl_data *gd, session_t *ps) { // Initialize GLX data structure @@ -1602,7 +823,7 @@ bool gl_init(struct gl_data *gd, session_t *ps) { glViewport(0, 0, viewport_dimensions[0], viewport_dimensions[1]); // Clear screen - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); + glClearColor(0.0F, 0.0F, 0.0F, 1.0F); glClear(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); glGenFramebuffers(1, &gd->back_fbo); @@ -1619,24 +840,35 @@ bool gl_init(struct gl_data *gd, session_t *ps) { glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glBindTexture(GL_TEXTURE_2D, 0); + gd->default_mask_texture = gl_new_texture(GL_TEXTURE_2D); + if (!gd->default_mask_texture) { + log_error("Failed to generate a default mask texture"); + return false; + } + + glBindTexture(GL_TEXTURE_2D, gd->default_mask_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, 1, 1, 0, GL_RED, GL_UNSIGNED_BYTE, + (GLbyte[]){'\xff'}); + glBindTexture(GL_TEXTURE_2D, 0); + + // Initialize shaders + gd->default_shader = gl_create_window_shader(NULL, win_shader_default); + if (!gd->default_shader) { + log_error("Failed to create window shaders"); + return false; + } + // Set projection matrix to gl viewport dimensions so we can use screen // coordinates for all vertices // Note: OpenGL matrices are column major - GLfloat projection_matrix[4][4] = {{2.0f / (GLfloat)viewport_dimensions[0], 0, 0, 0}, - {0, 2.0f / (GLfloat)viewport_dimensions[1], 0, 0}, + GLfloat projection_matrix[4][4] = {{2.0F / (GLfloat)viewport_dimensions[0], 0, 0, 0}, + {0, 2.0F / (GLfloat)viewport_dimensions[1], 0, 0}, {0, 0, 0, 0}, {-1, -1, 0, 1}}; - // Initialize shaders - gl_win_shader_from_string(vertex_shader, win_shader_glsl, &gd->win_shader); - int pml = glGetUniformLocationChecked(gd->win_shader.prog, "projection"); - glUseProgram(gd->win_shader.prog); - glUniformMatrix4fv(pml, 1, false, projection_matrix[0]); - glUseProgram(0); - gd->fill_shader.prog = gl_create_program_from_str(fill_vert, fill_frag); gd->fill_shader.color_loc = glGetUniformLocation(gd->fill_shader.prog, "color"); - pml = glGetUniformLocationChecked(gd->fill_shader.prog, "projection"); + int pml = glGetUniformLocationChecked(gd->fill_shader.prog, "projection"); glUseProgram(gd->fill_shader.prog); glUniformMatrix4fv(pml, 1, false, projection_matrix[0]); glUseProgram(0); @@ -1652,6 +884,17 @@ bool gl_init(struct gl_data *gd, session_t *ps) { glUniformMatrix4fv(pml, 1, false, projection_matrix[0]); glUseProgram(0); + gd->shadow_shader.prog = + gl_create_program_from_str(present_vertex_shader, shadow_colorization_frag); + gd->shadow_shader.uniform_color = + glGetUniformLocationChecked(gd->shadow_shader.prog, "color"); + pml = glGetUniformLocationChecked(gd->shadow_shader.prog, "projection"); + glUseProgram(gd->shadow_shader.prog); + glUniform1i(glGetUniformLocationChecked(gd->shadow_shader.prog, "tex"), 0); + glUniformMatrix4fv(pml, 1, false, projection_matrix[0]); + glUseProgram(0); + glBindFragDataLocation(gd->shadow_shader.prog, 0, "out_color"); + gd->brightness_shader.prog = gl_create_program_from_str(interpolating_vert, interpolating_frag); if (!gd->brightness_shader.prog) { @@ -1689,18 +932,24 @@ bool gl_init(struct gl_data *gd, session_t *ps) { } else { gd->is_nvidia = false; } + gd->has_robustness = gl_has_extension("GL_ARB_robustness"); + gd->has_egl_image_storage = gl_has_extension("GL_EXT_EGL_image_storage"); + gl_check_err(); return true; } void gl_deinit(struct gl_data *gd) { - gl_free_prog_main(&gd->win_shader); - if (gd->logger) { log_remove_target_tls(gd->logger); gd->logger = NULL; } + if (gd->default_shader) { + gl_destroy_window_shader(&gd->base, gd->default_shader); + gd->default_shader = NULL; + } + gl_check_err(); } @@ -1832,7 +1081,8 @@ static void gl_image_apply_alpha(backend_t *base, struct backend_image *img, glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, inner->texture, 0); glDrawBuffer(GL_COLOR_ATTACHMENT0); - _gl_fill(base, (struct color){0, 0, 0, 0}, reg_op, fbo, 0, false); + _gl_fill(base, (struct color){0, 0, 0, 0}, reg_op, fbo, inner->height, + !inner->y_inverted); glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); glDeleteFramebuffers(1, &fbo); @@ -1904,19 +1154,202 @@ bool gl_image_op(backend_t *base, enum image_operations op, void *image_data, return true; } -bool gl_read_pixel(backend_t *base attr_unused, void *image_data, int x, int y, - struct color *output) { - struct backend_image *tex = image_data; - auto inner = (struct gl_texture *)tex->inner; - GLfloat color[4]; - glReadPixels(x, inner->y_inverted ? inner->height - y : y, 1, 1, GL_RGBA, - GL_FLOAT, color); - output->alpha = color[3]; - output->red = color[0]; - output->green = color[1]; - output->blue = color[2]; - - bool ret = glGetError() == GL_NO_ERROR; - gl_clear_err(); - return ret; +bool gl_set_image_property(backend_t *backend_data, enum image_properties prop, + void *image_data, void *args) { + if (prop != IMAGE_PROPERTY_CUSTOM_SHADER) { + return default_set_image_property(backend_data, prop, image_data, args); + } + + struct backend_image *img = image_data; + auto inner = (struct gl_texture *)img->inner; + inner->shader = args; + return true; +} + +struct gl_shadow_context { + double radius; + void *blur_context; +}; + +struct backend_shadow_context *gl_create_shadow_context(backend_t *base, double radius) { + auto ctx = ccalloc(1, struct gl_shadow_context); + ctx->radius = radius; + ctx->blur_context = NULL; + + if (radius > 0) { + struct gaussian_blur_args args = { + .size = (int)radius, + .deviation = gaussian_kernel_std_for_size(radius, 0.5 / 256.0), + }; + ctx->blur_context = gl_create_blur_context(base, BLUR_METHOD_GAUSSIAN, &args); + if (!ctx->blur_context) { + log_error("Failed to create shadow context"); + free(ctx); + return NULL; + } + } + return (struct backend_shadow_context *)ctx; +} + +void gl_destroy_shadow_context(backend_t *base attr_unused, struct backend_shadow_context *ctx) { + auto ctx_ = (struct gl_shadow_context *)ctx; + if (ctx_->blur_context) { + gl_destroy_blur_context(base, (struct backend_blur_context *)ctx_->blur_context); + } + free(ctx_); +} + +void *gl_shadow_from_mask(backend_t *base, void *mask, + struct backend_shadow_context *sctx, struct color color) { + log_debug("Create shadow from mask"); + auto gd = (struct gl_data *)base; + auto img = (struct backend_image *)mask; + auto inner = (struct gl_texture *)img->inner; + auto gsctx = (struct gl_shadow_context *)sctx; + int radius = (int)gsctx->radius; + + auto new_inner = ccalloc(1, struct gl_texture); + new_inner->width = inner->width + radius * 2; + new_inner->height = inner->height + radius * 2; + new_inner->texture = gl_new_texture(GL_TEXTURE_2D); + new_inner->has_alpha = inner->has_alpha; + new_inner->y_inverted = true; + auto new_img = default_new_backend_image(new_inner->width, new_inner->height); + new_img->inner = (struct backend_image_inner_base *)new_inner; + new_img->inner->refcount = 1; + + // Render the mask to a texture, so inversion and corner radius can be + // applied. + auto source_texture = gl_new_texture(GL_TEXTURE_2D); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, source_texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, new_inner->width, new_inner->height, 0, + GL_RED, GL_UNSIGNED_BYTE, NULL); + glBindTexture(GL_TEXTURE_2D, 0); + GLuint fbo; + glGenFramebuffers(1, &fbo); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, + source_texture, 0); + glDrawBuffer(GL_COLOR_ATTACHMENT0); + if (img->color_inverted) { + // If the mask is inverted, clear the source_texture to white, so the + // "outside" of the mask would be correct + glClearColor(1, 1, 1, 1); + } else { + glClearColor(0, 0, 0, 1); + } + glClear(GL_COLOR_BUFFER_BIT); + { + // clang-format off + // interleaved vertex coordinates and texture coordinates + GLint coords[] = {radius , radius , 0 , 0, + radius + inner->width, radius , inner->width, 0, + radius + inner->width, radius + inner->height, inner->width, inner->height, + radius , radius + inner->height, 0 , inner->height,}; + // clang-format on + GLuint indices[] = {0, 1, 2, 2, 3, 0}; + _gl_compose(base, mask, fbo, NULL, (coord_t){0}, coords, indices, 1); + } + + gl_check_err(); + + auto tmp_texture = source_texture; + if (gsctx->blur_context != NULL) { + glActiveTexture(GL_TEXTURE0); + tmp_texture = gl_new_texture(GL_TEXTURE_2D); + glBindTexture(GL_TEXTURE_2D, tmp_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, new_inner->width, + new_inner->height, 0, GL_RED, GL_UNSIGNED_BYTE, NULL); + glBindTexture(GL_TEXTURE_2D, 0); + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, tmp_texture, 0); + + region_t reg_blur; + pixman_region32_init_rect(®_blur, 0, 0, (unsigned int)new_inner->width, + (unsigned int)new_inner->height); + // gl_blur expects reg_blur to be in X coordinate system (i.e. y flipped), + // but we are covering the whole texture so we don't need to worry about + // that. + gl_blur_impl( + 1.0, gsctx->blur_context, NULL, (coord_t){0}, ®_blur, NULL, + source_texture, + (geometry_t){.width = new_inner->width, .height = new_inner->height}, + fbo, gd->default_mask_texture); + pixman_region32_fini(®_blur); + } + + // Colorize the shadow with color. + log_debug("Colorize shadow"); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, new_inner->texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, new_inner->width, new_inner->height, 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo); + glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, + new_inner->texture, 0); + glClearColor(0, 0, 0, 0); + glClear(GL_COLOR_BUFFER_BIT); + + glBindTexture(GL_TEXTURE_2D, tmp_texture); + glUseProgram(gd->shadow_shader.prog); + glUniform4f(gd->shadow_shader.uniform_color, (GLfloat)color.red, + (GLfloat)color.green, (GLfloat)color.blue, (GLfloat)color.alpha); + + // clang-format off + GLuint indices[] = {0, 1, 2, 2, 3, 0}; + GLint coord[] = {0 , 0 , + new_inner->width , 0 , + new_inner->width , new_inner->height, + 0 , new_inner->height,}; + // clang-format on + + GLuint vao; + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + GLuint bo[2]; + glGenBuffers(2, bo); + glBindBuffer(GL_ARRAY_BUFFER, bo[0]); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bo[1]); + glBufferData(GL_ARRAY_BUFFER, (long)sizeof(*coord) * 8, coord, GL_STATIC_DRAW); + glBufferData(GL_ELEMENT_ARRAY_BUFFER, (long)sizeof(*indices) * 6, indices, + GL_STATIC_DRAW); + + glEnableVertexAttribArray(vert_coord_loc); + glVertexAttribPointer(vert_coord_loc, 2, GL_INT, GL_FALSE, sizeof(GLint) * 2, NULL); + + glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, NULL); + + glDisableVertexAttribArray(vert_coord_loc); + glBindVertexArray(0); + glDeleteVertexArrays(1, &vao); + + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); + glDeleteBuffers(2, bo); + + glDeleteTextures(1, (GLuint[]){source_texture}); + if (tmp_texture != source_texture) { + glDeleteTextures(1, (GLuint[]){tmp_texture}); + } + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); + glDeleteFramebuffers(1, &fbo); + gl_check_err(); + return new_img; +} + +enum device_status gl_device_status(backend_t *base) { + auto gd = (struct gl_data *)base; + if (!gd->has_robustness) { + return DEVICE_STATUS_NORMAL; + } + if (glGetGraphicsResetStatusARB() == GL_NO_ERROR) { + return DEVICE_STATUS_NORMAL; + } + return DEVICE_STATUS_RESETTING; } diff --git a/src/backend/gl/gl_common.h b/src/backend/gl/gl_common.h index b1d93b0..3a78865 100644 --- a/src/backend/gl/gl_common.h +++ b/src/backend/gl/gl_common.h @@ -12,16 +12,40 @@ #define CASESTRRET(s) \ case s: return #s +struct gl_blur_context; + +static inline GLint glGetUniformLocationChecked(GLuint p, const char *name) { + auto ret = glGetUniformLocation(p, name); + if (ret < 0) { + log_info("Failed to get location of uniform '%s'. This is normal when " + "using custom shaders.", + name); + } + return ret; +} + +#define bind_uniform(shader, uniform) \ + (shader)->uniform_##uniform = glGetUniformLocationChecked((shader)->prog, #uniform) // Program and uniforms for window shader typedef struct { + UT_hash_handle hh; + uint32_t id; GLuint prog; - GLint unifm_opacity; - GLint unifm_invert_color; - GLint unifm_tex; - GLint unifm_dim; - GLint unifm_brightness; - GLint unifm_max_brightness; + GLint uniform_opacity; + GLint uniform_invert_color; + GLint uniform_tex; + GLint uniform_dim; + GLint uniform_brightness; + GLint uniform_max_brightness; + GLint uniform_corner_radius; + GLint uniform_border_width; + GLint uniform_time; + + GLint uniform_mask_tex; + GLint uniform_mask_offset; + GLint uniform_mask_corner_radius; + GLint uniform_mask_inverted; } gl_win_shader_t; // Program and uniforms for brightness shader @@ -29,13 +53,23 @@ typedef struct { GLuint prog; } gl_brightness_shader_t; +typedef struct { + GLuint prog; + GLint uniform_color; +} gl_shadow_shader_t; + // Program and uniforms for blur shader typedef struct { GLuint prog; - GLint unifm_pixel_norm; - GLint unifm_opacity; + GLint uniform_pixel_norm; + GLint uniform_opacity; GLint texorig_loc; GLint scale_loc; + + GLint uniform_mask_tex; + GLint uniform_mask_offset; + GLint uniform_mask_corner_radius; + GLint uniform_mask_inverted; } gl_blur_shader_t; typedef struct { @@ -53,6 +87,7 @@ struct gl_texture { // Textures for auxiliary uses. GLuint auxiliary_texture[2]; + gl_win_shader_t *shader; void *user_data; }; @@ -60,14 +95,22 @@ struct gl_data { backend_t base; // If we are using proprietary NVIDIA driver bool is_nvidia; + // If ARB_robustness extension is present + bool has_robustness; + // If EXT_EGL_image_storage extension is present + bool has_egl_image_storage; // Height and width of the root window int height, width; - gl_win_shader_t win_shader; + // Hash-table of window shaders + gl_win_shader_t *default_shader; gl_brightness_shader_t brightness_shader; gl_fill_shader_t fill_shader; + gl_shadow_shader_t shadow_shader; GLuint back_texture, back_fbo; GLuint present_prog; + GLuint default_mask_texture; + /// Called when an gl_texture is decoupled from the texture it refers. Returns /// the decoupled user_data void *(*decouple_texture_user_data)(backend_t *base, void *user_data); @@ -83,16 +126,25 @@ typedef struct session session_t; #define GL_PROG_MAIN_INIT \ { .prog = 0, .unifm_opacity = -1, .unifm_invert_color = -1, .unifm_tex = -1, } +void x_rect_to_coords(int nrects, const rect_t *rects, coord_t image_dst, + int extent_height, int texture_height, int root_height, + bool y_inverted, GLint *coord, GLuint *indices); + GLuint gl_create_shader(GLenum shader_type, const char *shader_str); GLuint gl_create_program(const GLuint *const shaders, int nshaders); GLuint gl_create_program_from_str(const char *vert_shader_str, const char *frag_shader_str); +GLuint gl_create_program_from_strv(const char **vert_shaders, const char **frag_shaders); +void *gl_create_window_shader(backend_t *backend_data, const char *source); +void gl_destroy_window_shader(backend_t *backend_data, void *shader); +uint64_t gl_get_shader_attributes(backend_t *backend_data, void *shader); +bool gl_set_image_property(backend_t *backend_data, enum image_properties prop, + void *image_data, void *args); /** * @brief Render a region with texture data. */ -void gl_compose(backend_t *, void *ptex, - int dst_x1, int dst_y1, int dst_x2, int dst_y2, - const region_t *reg_tgt, const region_t *reg_visible); +void gl_compose(backend_t *, void *image_data, coord_t image_dst, void *mask, + coord_t mask_dst, const region_t *reg_tgt, const region_t *reg_visible); void gl_resize(struct gl_data *, int width, int height); @@ -105,19 +157,29 @@ bool gl_image_op(backend_t *base, enum image_operations op, void *image_data, const region_t *reg_op, const region_t *reg_visible, void *arg); void gl_release_image(backend_t *base, void *image_data); +void *gl_make_mask(backend_t *base, geometry_t size, const region_t *reg); void *gl_clone(backend_t *base, const void *image_data, const region_t *reg_visible); -bool gl_blur(backend_t *base, double opacity, void *, const region_t *reg_blur, - const region_t *reg_visible); +bool gl_blur(backend_t *base, double opacity, void *ctx, void *mask, coord_t mask_dst, + const region_t *reg_blur, const region_t *reg_visible); +bool gl_blur_impl(double opacity, struct gl_blur_context *bctx, void *mask, + coord_t mask_dst, const region_t *reg_blur, + const region_t *reg_visible attr_unused, GLuint source_texture, + geometry_t source_size, GLuint target_fbo, GLuint default_mask); void *gl_create_blur_context(backend_t *base, enum blur_method, void *args); void gl_destroy_blur_context(backend_t *base, void *ctx); +struct backend_shadow_context *gl_create_shadow_context(backend_t *base, double radius); +void gl_destroy_shadow_context(backend_t *base attr_unused, struct backend_shadow_context *ctx); +void *gl_shadow_from_mask(backend_t *base, void *mask, + struct backend_shadow_context *sctx, struct color color); void gl_get_blur_size(void *blur_context, int *width, int *height); void gl_fill(backend_t *base, struct color, const region_t *clip); void gl_present(backend_t *base, const region_t *); bool gl_read_pixel(backend_t *base, void *image_data, int x, int y, struct color *output); +enum device_status gl_device_status(backend_t *base); static inline void gl_delete_texture(GLuint texture) { glDeleteTextures(1, &texture); @@ -218,3 +280,13 @@ static inline bool gl_has_extension(const char *ext) { log_info("Missing GL extension %s.", ext); return false; } + +static const GLuint vert_coord_loc = 0; +static const GLuint vert_in_texcoord_loc = 1; + +#define GLSL(version, ...) "#version " #version "\n" #__VA_ARGS__ +#define QUOTE(...) #__VA_ARGS__ + +extern const char vertex_shader[], copy_with_mask_frag[], masking_glsl[], dummy_frag[], + fill_frag[], fill_vert[], interpolating_frag[], interpolating_vert[], win_shader_glsl[], + win_shader_default[], present_vertex_shader[], shadow_colorization_frag[]; diff --git a/src/backend/gl/glx.c b/src/backend/gl/glx.c index 1397d19..109bec9 100644 --- a/src/backend/gl/glx.c +++ b/src/backend/gl/glx.c @@ -302,16 +302,21 @@ static backend_t *glx_init(session_t *ps) { continue; } - gd->ctx = glXCreateContextAttribsARB(ps->dpy, cfg[i], 0, true, - (int[]){ - GLX_CONTEXT_MAJOR_VERSION_ARB, - 3, - GLX_CONTEXT_MINOR_VERSION_ARB, - 3, - GLX_CONTEXT_PROFILE_MASK_ARB, - GLX_CONTEXT_CORE_PROFILE_BIT_ARB, - 0, - }); + int *attributes = (int[]){GLX_CONTEXT_MAJOR_VERSION_ARB, + 3, + GLX_CONTEXT_MINOR_VERSION_ARB, + 3, + GLX_CONTEXT_PROFILE_MASK_ARB, + GLX_CONTEXT_CORE_PROFILE_BIT_ARB, + 0, + 0, + 0}; + if (glxext.has_GLX_ARB_create_context_robustness) { + attributes[6] = GLX_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB; + attributes[7] = GLX_LOSE_CONTEXT_ON_RESET_ARB; + } + + gd->ctx = glXCreateContextAttribsARB(ps->dpy, cfg[i], 0, true, attributes); free(cfg); if (!gd->ctx) { @@ -388,11 +393,10 @@ glx_bind_pixmap(backend_t *base, xcb_pixmap_t pixmap, struct xvisual_info fmt, b } log_trace("Binding pixmap %#010x", pixmap); - auto wd = ccalloc(1, struct backend_image); - wd->max_brightness = 1; + auto wd = default_new_backend_image(r->width, r->height); auto inner = ccalloc(1, struct gl_texture); - inner->width = wd->ewidth = r->width; - inner->height = wd->eheight = r->height; + inner->width = r->width; + inner->height = r->height; wd->inner = (struct backend_image_inner_base *)inner; free(r); @@ -440,9 +444,6 @@ glx_bind_pixmap(backend_t *base, xcb_pixmap_t pixmap, struct xvisual_info fmt, b inner->user_data = glxpixmap; inner->texture = gl_new_texture(GL_TEXTURE_2D); inner->has_alpha = fmt.alpha_size != 0; - wd->opacity = 1; - wd->color_inverted = false; - wd->dim = 0; wd->inner->refcount = 1; glBindTexture(GL_TEXTURE_2D, inner->texture); glXBindTexImageEXT(gd->display, glxpixmap->glpixmap, GLX_FRONT_LEFT_EXT, NULL); @@ -494,7 +495,7 @@ static void glx_diagnostics(backend_t *base) { auto gl_renderer = (const char *)glGetString(GL_RENDERER); printf("* GL renderer: %s\n", gl_renderer); - if (strcmp(glx_vendor, "Mesa Project and SGI")) { + if (strcmp(glx_vendor, "Mesa Project and SGI") == 0) { for (size_t i = 0; i < ARR_SIZE(software_renderer_names); i++) { if (strstr(gl_renderer, software_renderer_names[i]) != NULL) { warn_software_rendering = true; @@ -529,19 +530,26 @@ struct backend_operations glx_ops = { .release_image = gl_release_image, .compose = gl_compose, .image_op = gl_image_op, - .set_image_property = default_set_image_property, - .read_pixel = gl_read_pixel, + .set_image_property = gl_set_image_property, .clone_image = default_clone_image, .blur = gl_blur, .is_image_transparent = default_is_image_transparent, .present = glx_present, .buffer_age = glx_buffer_age, - .render_shadow = default_backend_render_shadow, + .create_shadow_context = gl_create_shadow_context, + .destroy_shadow_context = gl_destroy_shadow_context, + .render_shadow = backend_render_shadow_from_mask, + .shadow_from_mask = gl_shadow_from_mask, + .make_mask = gl_make_mask, .fill = gl_fill, .create_blur_context = gl_create_blur_context, .destroy_blur_context = gl_destroy_blur_context, .get_blur_size = gl_get_blur_size, .diagnostics = glx_diagnostics, + .device_status = gl_device_status, + .create_shader = gl_create_window_shader, + .destroy_shader = gl_destroy_window_shader, + .get_shader_attributes = gl_get_shader_attributes, .max_buffer_age = 5, // Why? }; @@ -609,6 +617,7 @@ void glxext_init(Display *dpy, int screen) { check_ext(GLX_EXT_texture_from_pixmap); check_ext(GLX_ARB_create_context); check_ext(GLX_EXT_buffer_age); + check_ext(GLX_ARB_create_context_robustness); #ifdef GLX_MESA_query_renderer check_ext(GLX_MESA_query_renderer); #endif diff --git a/src/backend/gl/glx.h b/src/backend/gl/glx.h index 1061f0b..44b4da0 100644 --- a/src/backend/gl/glx.h +++ b/src/backend/gl/glx.h @@ -55,6 +55,7 @@ struct glxext_info { bool has_GLX_ARB_create_context; bool has_GLX_EXT_buffer_age; bool has_GLX_MESA_query_renderer; + bool has_GLX_ARB_create_context_robustness; }; extern struct glxext_info glxext; diff --git a/src/backend/gl/shaders.c b/src/backend/gl/shaders.c new file mode 100644 index 0000000..4a18e62 --- /dev/null +++ b/src/backend/gl/shaders.c @@ -0,0 +1,187 @@ +#include "gl_common.h" + +// clang-format off +const char dummy_frag[] = GLSL(330, + uniform sampler2D tex; + in vec2 texcoord; + void main() { + gl_FragColor = texelFetch(tex, ivec2(texcoord.xy), 0); + } +); + +const char copy_with_mask_frag[] = GLSL(330, + uniform sampler2D tex; + in vec2 texcoord; + float mask_factor(); + void main() { + gl_FragColor = texelFetch(tex, ivec2(texcoord.xy), 0) * mask_factor(); + } +); + +const char fill_frag[] = GLSL(330, + uniform vec4 color; + void main() { + gl_FragColor = color; + } +); + +const char fill_vert[] = GLSL(330, + layout(location = 0) in vec2 in_coord; + uniform mat4 projection; + void main() { + gl_Position = projection * vec4(in_coord, 0, 1); + } +); + +const char interpolating_frag[] = GLSL(330, + uniform sampler2D tex; + in vec2 texcoord; + void main() { + gl_FragColor = vec4(texture2D(tex, vec2(texcoord.xy), 0).rgb, 1); + } +); + +const char interpolating_vert[] = GLSL(330, + uniform mat4 projection; + uniform vec2 texsize; + layout(location = 0) in vec2 in_coord; + layout(location = 1) in vec2 in_texcoord; + out vec2 texcoord; + void main() { + gl_Position = projection * vec4(in_coord, 0, 1); + texcoord = in_texcoord / texsize; + } +); +const char masking_glsl[] = GLSL(330, + uniform sampler2D mask_tex; + uniform vec2 mask_offset; + uniform float mask_corner_radius; + uniform bool mask_inverted; + in vec2 texcoord; + float mask_rectangle_sdf(vec2 point, vec2 half_size) { + vec2 d = abs(point) - half_size; + return length(max(d, 0.0)); + } + float mask_factor() { + vec2 mask_size = textureSize(mask_tex, 0); + vec2 maskcoord = texcoord - mask_offset; + vec4 mask = texture2D(mask_tex, maskcoord / mask_size); + if (mask_corner_radius != 0) { + vec2 inner_size = mask_size - vec2(mask_corner_radius) * 2.0f; + float dist = mask_rectangle_sdf(maskcoord - mask_size / 2.0f, + inner_size / 2.0f) - mask_corner_radius; + if (dist > 0.0f) { + mask.r *= (1.0f - clamp(dist, 0.0f, 1.0f)); + } + } + if (mask_inverted) { + mask.rgb = 1.0 - mask.rgb; + } + return mask.r; + } +); +const char win_shader_glsl[] = GLSL(330, + uniform float opacity; + uniform float dim; + uniform float corner_radius; + uniform float border_width; + uniform bool invert_color; + in vec2 texcoord; + uniform sampler2D tex; + uniform sampler2D brightness; + uniform float max_brightness; + // Signed distance field for rectangle center at (0, 0), with size of + // half_size * 2 + float rectangle_sdf(vec2 point, vec2 half_size) { + vec2 d = abs(point) - half_size; + return length(max(d, 0.0)); + } + + vec4 default_post_processing(vec4 c) { + vec4 border_color = texture(tex, vec2(0.0, 0.5)); + if (invert_color) { + c = vec4(c.aaa - c.rgb, c.a); + border_color = vec4(border_color.aaa - border_color.rgb, border_color.a); + } + c = vec4(c.rgb * (1.0 - dim), c.a) * opacity; + border_color = vec4(border_color.rgb * (1.0 - dim), border_color.a) * opacity; + + vec3 rgb_brightness = texelFetch(brightness, ivec2(0, 0), 0).rgb; + // Ref: https://en.wikipedia.org/wiki/Relative_luminance + float brightness = rgb_brightness.r * 0.21 + + rgb_brightness.g * 0.72 + + rgb_brightness.b * 0.07; + if (brightness > max_brightness) { + c.rgb = c.rgb * (max_brightness / brightness); + border_color.rgb = border_color.rgb * (max_brightness / brightness); + } + + // Rim color is the color of the outer rim of the window, if there is no + // border, it's the color of the window itself, otherwise it's the border. + // Using mix() to avoid a branch here. + vec4 rim_color = mix(c, border_color, clamp(border_width, 0.0f, 1.0f)); + + vec2 outer_size = vec2(textureSize(tex, 0)); + vec2 inner_size = outer_size - vec2(corner_radius) * 2.0f; + float rect_distance = rectangle_sdf(texcoord - outer_size / 2.0f, + inner_size / 2.0f) - corner_radius; + if (rect_distance > 0.0f) { + c = (1.0f - clamp(rect_distance, 0.0f, 1.0f)) * rim_color; + } else { + float factor = clamp(rect_distance + border_width, 0.0f, 1.0f); + c = (1.0f - factor) * c + factor * border_color; + } + + return c; + } + + vec4 window_shader(); + float mask_factor(); + + void main() { + gl_FragColor = window_shader() * mask_factor(); + } +); + +const char win_shader_default[] = GLSL(330, + in vec2 texcoord; + uniform sampler2D tex; + vec4 default_post_processing(vec4 c); + vec4 window_shader() { + vec4 c = texelFetch(tex, ivec2(texcoord), 0); + return default_post_processing(c); + } +); + +const char present_vertex_shader[] = GLSL(330, + uniform mat4 projection; + layout(location = 0) in vec2 coord; + out vec2 texcoord; + void main() { + gl_Position = projection * vec4(coord, 0, 1); + texcoord = coord; + } +); +const char vertex_shader[] = GLSL(330, + uniform mat4 projection; + uniform float scale = 1.0; + uniform vec2 texorig; + layout(location = 0) in vec2 coord; + layout(location = 1) in vec2 in_texcoord; + out vec2 texcoord; + void main() { + gl_Position = projection * vec4(coord, 0, scale); + texcoord = in_texcoord + texorig; + } +); +const char shadow_colorization_frag[] = GLSL(330, + uniform vec4 color; + uniform sampler2D tex; + in vec2 texcoord; + out vec4 out_color; + void main() { + vec4 c = texelFetch(tex, ivec2(texcoord), 0); + out_color = c.r * color; + } +); +// clang-format on |