src/mesa/shader/slang/library/slang_vertex_builtin.gc

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5
   4  *
   5  * Copyright (C) 2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 //
  26 // From Shader Spec, ver. 1.10, rev. 59
  27 //
  28
  29 __fixed_output vec4 gl_Position;
  30 __fixed_output float gl_PointSize;
  31 __fixed_output vec4 gl_ClipVertex;
  32
  33 attribute vec4 gl_Color;
  34 attribute vec4 gl_SecondaryColor;
  35 attribute vec3 gl_Normal;
  36 attribute vec4 gl_Vertex;
  37 attribute vec4 gl_MultiTexCoord0;
  38 attribute vec4 gl_MultiTexCoord1;
  39 attribute vec4 gl_MultiTexCoord2;
  40 attribute vec4 gl_MultiTexCoord3;
  41 attribute vec4 gl_MultiTexCoord4;
  42 attribute vec4 gl_MultiTexCoord5;
  43 attribute vec4 gl_MultiTexCoord6;
  44 attribute vec4 gl_MultiTexCoord7;
  45 attribute float gl_FogCoord;
  46
  47 varying vec4 gl_FrontColor;
  48 varying vec4 gl_BackColor;
  49 varying vec4 gl_FrontSecondaryColor;
  50 varying vec4 gl_BackSecondaryColor;
  51 varying vec4 gl_TexCoord[gl_MaxTextureCoords];
  52 varying float gl_FogFragCoord;
  53
  54 //
  55 // Geometric Functions
  56 //
  57
  58 vec4 ftransform()
  59 {
  60    __retVal = gl_ModelViewProjectionMatrix * gl_Vertex;
  61 }
  62
  63
  64
  65 //
  66 // 8.7 Texture Lookup Functions
  67 // These are pretty much identical to the ones in slang_fragment_builtin.gc
  68 // When used in a vertex program, the texture sample instructions should not
  69 // be using a LOD term so it's effectively zero.  Adding 'lod' to that does
  70 // what we want.
  71 //
  72
  73 vec4 texture1DLod(const sampler1D sampler, const float coord, const float lod)
  74 {
  75    vec4 coord4;
  76    coord4.x = coord;
  77    coord4.w = lod;
  78    __asm vec4_texb1d __retVal, sampler, coord4;
  79 }
  80
  81 vec4 texture1DProjLod(const sampler1D sampler, const vec2 coord, const float lod)
  82 {
  83    vec4 pcoord;
  84    pcoord.x = coord.x / coord.y;
  85    pcoord.w = lod;
  86    __asm vec4_texb1d __retVal, sampler, pcoord;
  87 }
  88
  89 vec4 texture1DProjLod(const sampler1D sampler, const vec4 coord, const float lod)
  90 {
  91    vec4 pcoord;
  92    pcoord.x = coord.x / coord.z;
  93    pcoord.w = lod;
  94    __asm vec4_texb1d __retVal, sampler, pcoord;
  95 }
  96
  97
  98
  99 vec4 texture2DLod(const sampler2D sampler, const vec2 coord, const float lod)
 100 {
 101    vec4 coord4;
 102    coord4.xy = coord.xy;
 103    coord4.w = lod;
 104    __asm vec4_texb2d __retVal, sampler, coord4;
 105 }
 106
 107 vec4 texture2DProjLod(const sampler2D sampler, const vec3 coord, const float lod)
 108 {
 109    vec4 pcoord;
 110    pcoord.xy = coord.xy / coord.z;
 111    pcoord.w = lod;
 112    __asm vec4_texb2d __retVal, sampler, pcoord;
 113 }
 114
 115 vec4 texture2DProjLod(const sampler2D sampler, const vec4 coord, const float lod)
 116 {
 117    vec4 pcoord;
 118    pcoord.xy = coord.xy / coord.z;
 119    pcoord.w = lod;
 120    __asm vec4_texb2d __retVal, sampler, pcoord;
 121 }
 122
 123
 124 vec4 texture3DLod(const sampler3D sampler, const vec3 coord, const float lod)
 125 {
 126    vec4 coord4;
 127    coord4.xyz = coord.xyz;
 128    coord4.w = lod;
 129    __asm vec4_texb3d __retVal, sampler, coord4;
 130 }
 131
 132 vec4 texture3DProjLod(const sampler3D sampler, const vec4 coord, const float lod)
 133 {
 134    // do projection here (there's no vec4_texbp3d instruction)
 135    vec4 pcoord;
 136    pcoord.xyz = coord.xyz / coord.w;
 137    pcoord.w = lod;
 138    __asm vec4_texb3d __retVal, sampler, pcoord;
 139 }
 140
 141
 142 vec4 textureCubeLod(const samplerCube sampler, const vec3 coord, const float lod)
 143 {
 144    vec4 coord4;
 145    coord4.xyz = coord;
 146    coord4.w = lod;
 147    __asm vec4_texcube __retVal, sampler, coord4;
 148 }
 149
 150
 151 vec4 shadow1DLod(const sampler1DShadow sampler, const vec3 coord, const float lod)
 152 {
 153    vec4 coord4;
 154    coord4.xyz = coord;
 155    coord4.w = lod;
 156    __asm vec4_texb1d __retVal, sampler, coord4;
 157 }
 158
 159 vec4 shadow1DProjLod(const sampler1DShadow sampler, const vec4 coord,
 160                      const float lod)
 161 {
 162    vec4 pcoord;
 163    pcoord.x = coord.x / coord.w;
 164    pcoord.z = coord.z;
 165    pcoord.w = lod;
 166    __asm vec4_texb1d __retVal, sampler, pcoord;
 167 }
 168
 169
 170 vec4 shadow2DLod(const sampler2DShadow sampler, const vec3 coord, const float lod)
 171 {
 172    vec4 coord4;
 173    coord4.xyz = coord;
 174    coord4.w = lod;
 175    __asm vec4_texb2d __retVal, sampler, coord4;
 176 }
 177
 178 vec4 shadow2DProjLod(const sampler2DShadow sampler, const vec4 coord,
 179                      const float lod)
 180 {
 181    vec4 pcoord;
 182    pcoord.xy = coord.xy / coord.w;
 183    pcoord.z = coord.z;
 184    pcoord.w = lod;
 185    __asm vec4_texb2d __retVal, sampler, pcoord;
 186 }
 187