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dev0
2025-11-28 23:13:44 +05:30
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physx/samples/sampleframework/media/shaders/fragment/outlinetext.cg Normal file
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#include <phong_lighting.cg>
#include <fragment_entry.cg>
DECLARE_TEXTURE(diffuseTexture)
uniform const float3 outlineColor = {0.0, 0.0, 0.0};
uniform const float invTexWidth = 1.0/1024.0;
uniform const float invTexHeight = 1.0/1024.0;
// should replace the blur with a separable version or some such
SurfaceMaterial computeSurfaceMaterial(const FragmentParameters params)
{
half4 diffuseTextureColor = tex2D(diffuseTexture, params.texcoord0.xy);
half coeffs[9]= { 1.0/16.0, 2.0/16.0, 1.0/16.0,
2.0/16.0, 4.0/16.0, 2.0/16.0,
1.0/16.0, 2.0/16.0, 1.0/16.0 };
float accum = 0.0;
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(-invTexWidth, -invTexHeight)).a * coeffs[0];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2( 0, -invTexHeight)).a * coeffs[1];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(invTexWidth, -invTexHeight)).a * coeffs[2];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(-invTexWidth, 0 )).a * coeffs[3];
accum += diffuseTextureColor.a * coeffs[4];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(invTexWidth, 0 )).a * coeffs[5];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(-invTexWidth, invTexHeight)).a * coeffs[6];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2( 0, invTexHeight)).a * coeffs[7];
accum += tex2D(diffuseTexture, params.texcoord0.xy + half2(invTexWidth, invTexHeight)).a * coeffs[8];
SurfaceMaterial mout;
mout.diffuseColor = lerp(outlineColor, params.color.rgb, diffuseTextureColor.a);
mout.alpha = diffuseTextureColor.a*params.color.a + accum;
mout.emissiveColor = 0;
mout.specularColor = half3(1,1,1); // TODO: make this a constant parameter set by the material.
mout.specularPower = 16;
mout.tangentSpaceNormal = half3(0,0,1);
return mout;
}