43 lines
1.2 KiB
Text
43 lines
1.2 KiB
Text
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/**
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* Basic tenebrae vertex program.
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* This compiles under the arbvp and vp20 vertex program profiles.
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* compile with "-profile vp20 -posinv"
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*/
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struct appdata {
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float4 position : POSITION;
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float4 texcoord : TEXCOORD0; //texture coords of color/bump map
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float4 normal : NORMAL; //tangent space basis vectors
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float4 tangent : TEXCOORD1;
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float4 binormal : TEXCOORD2;
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};
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struct v2f {
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float4 HPOS : POSITION;
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float4 TEX0 : TEXCOORD0; //color map texture coordinates
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float4 TEX1 : TEXCOORD1; //tangent space light vector unnormalized
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float4 TEX2 : TEXCOORD2; //bump map texture coordinates
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float4 TEX3 : TEXCOORD3; //world space vertex position (for attenuation)
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};
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v2f main(appdata I,uniform float4x4 objviewproj : _GL_MVP, uniform float4x4 texture_matrix : c0)
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{
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v2f O;
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// transform vertices into projection space using the pre-multiplied matrix
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O.HPOS = mul(objviewproj, I.position);
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//copy stuff to output
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O.TEX0 = I.texcoord;
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O.TEX2 = I.texcoord;
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//transform into tangent space
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O.TEX1.x = dot(I.position,I.tangent);
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O.TEX1.y = dot(I.position,I.binormal);
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O.TEX1.z = dot(I.position,I.normal);
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//transform with texture matrix
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O.TEX3 = mul(texture_matrix, I.position);
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return O;
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} // main
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