mirror of https://github.com/ZDoom/gzdoom.git
76 lines
1.6 KiB
Plaintext
76 lines
1.6 KiB
Plaintext
#ifndef NO_FOG
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varying vec4 pixelpos;
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attribute vec4 fogparams;
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varying vec4 fogparm;
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#endif
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#ifndef NO_GLOW
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varying vec2 glowdist;
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attribute vec2 glowdistance;
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#endif
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#ifdef SOFTLIGHT
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attribute float lightlevel_in;
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varying float lightlevel;
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#endif
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void main()
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{
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#ifdef SOFTLIGHT
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lightlevel = lightlevel_in;
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#endif
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#ifndef NO_SM4
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// Yes, I know... But using a texture matrix here saves me from the hassle of tracking its state across shaders. ;)
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vec4 worldcoord = gl_TextureMatrix[7] * gl_Vertex;
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#else
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vec4 worldcoord = gl_Vertex;
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#endif
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vec4 eyeCoordPos = gl_ModelViewMatrix * worldcoord;
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gl_FrontColor = gl_Color;
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#ifndef NO_FOG
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pixelpos.xyz = worldcoord.xyz;
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pixelpos.w = -eyeCoordPos.z/eyeCoordPos.w;
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fogparm = fogparams;
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#endif
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#ifndef NO_GLOW
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glowdist = glowdistance;
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#endif
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#ifdef SPHEREMAP
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vec3 u = normalize(eyeCoordPos.xyz);
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vec3 n = normalize(gl_NormalMatrix * gl_Normal);
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vec3 r = reflect(u, n);
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float m = 2.0 * sqrt( r.x*r.x + r.y*r.y + (r.z+1.0)*(r.z+1.0) );
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vec2 sst = vec2(r.x/m + 0.5, r.y/m + 0.5);
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#endif
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#ifndef SPHEREMAP_0
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
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#else
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gl_TexCoord[0].xy = sst;
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#endif
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/* only for reference purposes. I don't think this will ever get used.
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#ifdef NUM_LAYERS
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#ifndef SPHEREMAP_1
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gl_TexCoord[1] = gl_TextureMatrix[1] * gl_MultiTexCoord0;
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#else
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gl_TexCoord[1].xy = sst;
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#endif
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#endif
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*/
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#ifndef NO_SM4
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gl_Position = gl_ModelViewProjectionMatrix * worldcoord;
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#else
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gl_Position = ftransform();
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#endif
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#ifdef __GLSL_CG_DATA_TYPES
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gl_ClipVertex = eyeCoordPos;
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#endif
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}
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