Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 308 insertions, 0 deletions

diff --git a/KaplaDemo/externalIP/resources/shaders/default_fs.cpp b/KaplaDemo/externalIP/resources/shaders/default_fs.cpp
new file mode 100644
index 00000000..8dda1d21
--- /dev/null
+++ b/KaplaDemo/externalIP/resources/shaders/default_fs.cpp
@@ -0,0 +1,308 @@
+
+// scene reflection 
+uniform float reflectionCoeff = 0.0f;
+uniform float specularCoeff = 0.0f;
+
+uniform sampler2DRect reflectionTex;
+
+// Shadow map
+uniform float shadowAmbient = 0.0;
+uniform sampler2D texture;
+uniform sampler2DArrayShadow stex;
+uniform sampler2DArrayShadow stex2;
+uniform sampler2DArrayShadow stex3;
+uniform samplerCube skyboxTex;
+
+uniform float hdrScale = 5.0;
+
+uniform vec2 texSize; // x - size, y - 1/size
+uniform vec4 far_d;
+
+// Spot lights
+uniform vec3 spotLightDir;
+uniform vec3 spotLightPos;
+uniform float spotLightCosineDecayBegin;
+uniform float spotLightCosineDecayEnd;
+
+uniform vec3 spotLightDir2;
+uniform vec3 spotLightPos2;
+uniform float spotLightCosineDecayBegin2;
+uniform float spotLightCosineDecayEnd2;
+
+uniform vec3 spotLightDir3;
+uniform vec3 spotLightPos3;
+uniform float spotLightCosineDecayBegin3;
+uniform float spotLightCosineDecayEnd3;
+
+uniform vec3 parallelLightDir;
+uniform float shadowAdd;
+uniform int useTexture;
+uniform int numShadows;
+uniform vec3 ambientColor;
+uniform vec2 shadowTaps[12];
+float shadowCoeff1()
+{
+	//const int index = 0;
+
+	int index = 3;
+	
+	if(gl_FragCoord.z < far_d.x)
+		index = 0;
+	else if(gl_FragCoord.z < far_d.y)
+		index = 1;
+	else if(gl_FragCoord.z < far_d.z)
+		index = 2;
+	
+	vec4 shadow_coord = gl_TextureMatrix[index]*vec4(gl_TexCoord[1].xyz, 1);
+
+	shadow_coord.w = shadow_coord.z + shadowAdd;
+		// tell glsl in which layer to do the look up
+	shadow_coord.z = float(index);
+
+	
+	// Gaussian 3x3 filter
+//	return shadow2DArray(stex, shadow_coord).x;
+	/*
+	const float X = 1.0f;
+	float ret = shadow2DArray(stex, shadow_coord).x * 0.25;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( -X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( -X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( -X, X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( 0, -X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( 0, X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex, shadow_coord, ivec2( X, X)).x * 0.0625;	
+	return ret;*/
+	const int numTaps = 12;
+	float radius = 0.0003f / pow(2, index);
+	float s = 0.0f;
+	for (int i = 0; i < numTaps; i++)
+	{
+		s += shadow2DArray(stex, shadow_coord + vec4(shadowTaps[i] * radius, 0.0f, 0.0f)).r;
+	}
+	s /= numTaps;
+	return s;
+}
+float shadowCoeff2()
+{
+	const int index = 1;
+
+	//int index = 3;
+	//if(gl_FragCoord.z < far_d.x)
+	//	index = 0;
+	//else if(gl_FragCoord.z < far_d.y)
+	//	index = 1;
+	//else if(gl_FragCoord.z < far_d.z)
+	//	index = 2;
+	
+	vec4 shadow_coord = gl_TextureMatrix[index]*vec4(gl_TexCoord[1].xyz, 1);
+
+	shadow_coord.w = shadow_coord.z + shadowAdd;
+	shadow_coord.z = float(0);
+//	return shadow2DArray(stex, shadow_coord).x;
+	/*
+	const float X = 1.0f;
+	float ret = shadow2DArray(stex2, shadow_coord).x * 0.25;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( -X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( -X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( -X, X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( 0, -X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( 0, X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex2, shadow_coord, ivec2( X, X)).x * 0.0625;
+	return ret;*/
+	const int numTaps = 12;
+	float radius = 1.0f;
+	float s = 0.0f;
+	for (int i = 0; i < numTaps; i++)
+	{
+		s += shadow2DArray(stex, shadow_coord + vec4(shadowTaps[i] * radius, 0.0f, 0.0f)).r;
+	}
+	s /= numTaps;
+	return s;
+}
+float shadowCoeff3()
+{
+	const int index = 2;
+
+	//int index = 3;
+	//if(gl_FragCoord.z < far_d.x)
+	//	index = 0;
+	//else if(gl_FragCoord.z < far_d.y)
+	//	index = 1;
+	//else if(gl_FragCoord.z < far_d.z)
+	//	index = 2;
+	
+	vec4 shadow_coord = gl_TextureMatrix[index]*vec4(gl_TexCoord[1].xyz, 1);
+
+	shadow_coord.w = shadow_coord.z + shadowAdd;
+	shadow_coord.z = float(0);
+
+//	return shadow2DArray(stex, shadow_coord).x;
+	/*
+	const float X = 1.0f;
+	float ret = shadow2DArray(stex3, shadow_coord).x * 0.25;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( -X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( -X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( -X, X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( 0, -X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( 0, X)).x * 0.125;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( X, -X)).x * 0.0625;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( X, 0)).x * 0.125;
+	ret += shadow2DArrayOffset(stex3, shadow_coord, ivec2( X, X)).x * 0.0625;
+	return ret;*/
+	const int numTaps = 12;
+	float radius = 0.02f;
+	float s = 0.0f;
+	for (int i = 0; i < numTaps; i++)
+	{
+		s += shadow2DArray(stex, shadow_coord + vec4(shadowTaps[i] * radius, 0.0f, 0.0f)).r;
+	}
+	s /= numTaps;
+	return s;
+}
+
+float filterwidth(float2 v)
+{
+	float2 fw = max(abs(ddx(v)), abs(ddy(v)));
+	return max(fw.x, fw.y);
+}
+
+float2 bump(float2 x)
+{
+	return (floor((x) / 2) + 2.f * max(((x) / 2) - floor((x) / 2) - .5f, 0.f));
+}
+
+float checker(float2 uv)
+{
+	float width = filterwidth(uv);
+	float2 p0 = uv - 0.5 * width;
+	float2 p1 = uv + 0.5 * width;
+
+	float2 i = (bump(p1) - bump(p0)) / width;
+	return i.x * i.y + (1 - i.x) * (1 - i.y);
+}
+uniform float fresnelBias = 0.0;
+uniform float fresnelScale = 1.0;
+uniform float fresnelPower = 3.0;   // 5.0 is physically correct
+
+uniform float RollOff = 0.5f;
+void main()
+{
+
+//// TODO, expose this as user parameter
+	const float skyLightIntensity = 0.2;
+	const float rimLightIntensity = 0.3;
+
+
+	vec3 diffuseMat;
+	vec3 specularMat;
+	vec3 emissiveReflectSpecPow;
+	
+	specularMat = vec3(1.0);
+	emissiveReflectSpecPow = vec3(0.0,0.0,0.0);
+
+	vec3 normal = normalize(gl_TexCoord[2].xyz);
+	vec3 wnormal = normalize(gl_TexCoord[4].xyz);
+	// read in material color for diffuse, specular, bump, emmisive
+
+	// 3D texture	
+	vec4 colorx;
+	if (useTexture > 0)
+		colorx = texture2D(texture, gl_TexCoord[0]);
+	else {
+		colorx = gl_Color;
+		colorx *= 1.0 - 0.25*checker(float2(gl_TexCoord[3].x, gl_TexCoord[3].z));
+	}	
+	colorx = clamp(colorx,0,1);
+	diffuseMat = colorx.xyz*0.4;
+	//diffuseMat = myTexture3D(gl_TexCoord[0].xyz);//texture3D(ttt3D, gl_TexCoord[0].xyz);
+	//diffuseMat = texture3D(ttt3D, gl_TexCoord[0].xyz);
+
+	if (dot(normal, gl_TexCoord[1].xyz) > 0) {
+		normal.xyz *= -1;
+	}	
+	
+	//gl_FragColor.xyz = normal*0.5 + vec3(0.5,0.5,0.5);
+	//gl_FragColor.w = 1;
+	//return;
+	vec3 eyeVec = normalize(gl_TexCoord[1].xyz);
+
+	// apply gamma correction for diffuse textures
+	//diffuseMat = pow(diffuseMat, 0.45);
+
+	float specularPower = emissiveReflectSpecPow.b*255.0f + 1.0f;
+
+	// TODO - fix this
+	specularPower = 10.0f;
+
+	float emissive = 0.0f;
+	float reflectivity = emissiveReflectSpecPow.b;
+	float fresnel = fresnelBias + fresnelScale*pow(1.0 - max(0.0, dot(normal, eyeVec)), fresnelPower);
+	float specular = 0.0f;
+
+	vec3 skyNormal = reflect(eyeVec, normal);
+	vec3 skyColor = skyLightIntensity * textureCube(skyboxTex, skyNormal).rgb;
+	vec3 ambientSkyColor = diffuseMat * skyColor;
+
+	vec3 diffuseColor = vec3(0.0, 0.0, 0.0);	
+
+	if (numShadows >= 1) {
+
+		vec3 lightColor = hdrScale * vec3(1.0, 1.0, 1.0);
+		vec3 shadowColor = vec3(0.4, 0.4, 0.7); // colored shadow
+		//vec3 lvec = normalize(spotLightDir);
+		vec3 lvec = normalize(spotLightPos - gl_TexCoord[1].xyz);
+		float cosine = dot(lvec, spotLightDir);
+		float intensity = smoothstep(spotLightCosineDecayBegin, spotLightCosineDecayEnd, cosine);
+
+		float ldn = max(0.0f, dot(normal, lvec));
+		float shadowC = shadowCoeff1();
+		//gl_FragColor = vec4(shadowC,shadowC,shadowC,1.0f);
+		//return;
+		vec3 irradiance = shadowC * ldn * lightColor;
+
+		// diffuse irradiance
+		diffuseColor += diffuseMat * irradiance*intensity;
+
+		// add colored shadow
+		diffuseColor += (1.0 - shadowC*ldn) * shadowAmbient * shadowColor * diffuseMat*intensity;
+
+		vec3 r = reflect(lvec, normal);	
+		specular += pow(max(0.0, dot(r, eyeVec)), specularPower)*shadowC*intensity;
+	}
+
+	// add rim light
+	if (numShadows >= 2) {
+		vec3 lightColor = hdrScale * vec3(1.0, 1.0, 1.0);
+		vec3 lvec = normalize(spotLightDir2);
+		float ldn = max(0.0f, dot(normal, lvec));
+		vec3 irradiance = ldn * lightColor;
+
+		// diffuse irradiance
+		diffuseColor += diffuseMat * irradiance;
+	}
+
+	vec3 color = vec3(0.0, 0.0, 0.0);
+
+	color += diffuseColor;
+	color += ambientSkyColor;
+	color += specular*specularMat;
+	color += hdrScale * emissive * diffuseMat;
+
+	//vec3 reflectColor = diffuseMat * texture2DRect(reflectionTex, gl_FragCoord.xy).rgb;
+	//color = reflectionCoeff * reflectColor + (1.0f - reflectionCoeff) * color;
+	color = (fresnel * skyColor + (1.0 - fresnel) * color) * reflectivity + (1.0 - reflectivity) * color;
+
+	gl_FragColor.rgb = color;
+	gl_FragColor.w = gl_Color.w;
+
+	//float fog = clamp(gl_Fog.scale*(gl_Fog.end+gl_TexCoord[1].z), 0.0, 1.0);
+	//vec4 fogCol = gl_Fog.color;	
+	float fog = clamp(gl_Fog.scale*(gl_Fog.end+gl_TexCoord[1].z), 0.0, 1.0);
+	vec4 fogCol = gl_Fog.color;
+	gl_FragColor = mix(fogCol, gl_FragColor, fog);
+
+}
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