Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 116 insertions, 0 deletions

diff --git a/KaplaDemo/externalIP/resources/shaders/dust_gs.cpp b/KaplaDemo/externalIP/resources/shaders/dust_gs.cpp
new file mode 100644
index 00000000..672a66e5
--- /dev/null
+++ b/KaplaDemo/externalIP/resources/shaders/dust_gs.cpp
@@ -0,0 +1,116 @@
+//#version 120\n
+//#extension GL_EXT_geometry_shader4 : enable\n
+uniform float pointRadius;  // point size in world space
+uniform float densityThreshold = 50.0;
+uniform float idensityThreshold = 1.0 / 30.0;
+uniform float pointShrink = 0.25;
+uniform sampler2D meteorTex;
+void main()
+{
+    gl_FrontColor = gl_FrontColorIn[0];
+    float density = gl_TexCoordIn[0][1].x;
+	float life = gl_TexCoordIn[0][1].y;
+	
+
+	gl_TexCoord[1].xy = 0.25f*vec2(gl_PrimitiveIDIn / 4, gl_PrimitiveIDIn % 4);
+    // scale down point size based on density
+	float factor = 1.0f;//density * idensityThreshold;
+	//smoothstep(0.0f, densityThreshold, density);
+		//density * idensityThreshold;
+		//clamp(density / 50.0f, 0, 1);
+    float pointSize = pointRadius*factor;//*(pointShrink + smoothstep(0.0, densityThreshold, density)*(1.0-pointShrink));
+
+	pointSize *= gl_TexCoordIn[0][3].x;
+	float tmp = gl_TexCoordIn[0][3].y;
+
+	float bb = 1.0f;
+	if (tmp > 0.5f) {
+		//gl_FrontColor = vec4(3*life,0,0,1);
+		// TODO: Meteor trail color here...
+		//vec2 fetchPos = vec2( min(max((3-lifeTime)/3,0),1), 0);
+		float val = 1-min(max((life-0.3)/0.2,0.01),0.99);
+		vec2 fetchPos = vec2(val, 0);
+		gl_FrontColor = texture2D(meteorTex, fetchPos);
+		if (gl_FrontColor.r > 0.5) bb += (gl_FrontColor.r-0.5)*(gl_FrontColor.r-0.5)*10;
+		
+	}
+//    float pointSize = pointRadius;
+
+    // eye space
+    vec3 pos = gl_PositionIn[0].xyz;
+    vec3 pos2 = gl_TexCoordIn[0][0].xyz;
+    vec3 motion = pos - pos2;
+    vec3 dir = normalize(motion);
+    float len = length(motion);
+
+    vec3 x = dir * pointSize;
+    vec3 view = normalize(-pos);
+    vec3 y = normalize(cross(dir, view)) * pointSize;
+    float facing = dot(view, dir);
+
+    // check for very small motion to avoid jitter
+    float threshold = 0.01;
+//    if (len < threshold) {
+    if ((len < threshold) || (facing > 0.95) || (facing < -0.95)) {
+        pos2 = pos;
+        x = vec3(pointSize, 0.0, 0.0);
+        y = vec3(0.0, -pointSize, 0.0);
+    }
+
+	float angle = density;
+	float cv = cos(angle);
+	float sv = sin(angle);
+
+	vec3 xt = cv*x + sv*y;
+	vec3 yt = -sv*x + cv*y;
+	x = xt;
+	y = yt;
+
+    {
+
+        gl_TexCoord[0] = vec4(0, 0, bb, life);
+        gl_TexCoord[2] = vec4(pos + x + y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+		gl_TexCoord[3] = gl_TexCoordIn[0][2];
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(0, 1, bb, life);
+		gl_TexCoord[2] = vec4(pos + x - y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(1, 0, bb, life);
+		gl_TexCoord[2] = vec4(pos2 - x + y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(1, 1, bb, life);
+        gl_TexCoord[2] = vec4(pos2 - x - y, 1);
+		gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+
+        EmitVertex();
+/*
+        gl_TexCoord[0] = vec4(0, 0, 0, life);
+        gl_TexCoord[2] =  vec4(pos + x + y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(0, 1, 0, life);
+        gl_TexCoord[2] = vec4(pos + x - y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(1, 0, 0, life);
+        gl_TexCoord[2] = vec4(pos2 - x + y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+        EmitVertex();
+
+        gl_TexCoord[0] = vec4(1, 1, 0, life);
+        gl_TexCoord[2] = vec4(pos2 - x - y, 1);
+        gl_Position = gl_ProjectionMatrix * gl_TexCoord[2];
+        EmitVertex();
+		*/
+    }
+}