src/mesa/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[0] * gl_Vertex.xxxx
  61             + gl_ModelViewProjectionMatrix[1] * gl_Vertex.yyyy
  62             + gl_ModelViewProjectionMatrix[2] * gl_Vertex.zzzz
  63             + gl_ModelViewProjectionMatrix[3] * gl_Vertex.wwww;
  64 }
  65
  66
  67
  68 //
  69 // 8.7 Texture Lookup Functions
  70 // These are pretty much identical to the ones in slang_fragment_builtin.gc
  71 // When used in a vertex program, the texture sample instructions should not
  72 // be using a LOD term so it's effectively zero.  Adding 'lod' to that does
  73 // what we want.
  74 //
  75
  76 vec4 texture1DLod(const sampler1D sampler, const float coord, const float lod)
  77 {
  78    vec4 coord4;
  79    coord4.x = coord;
  80    coord4.w = lod;
  81    __asm vec4_tex_1d_bias __retVal, sampler, coord4;
  82 }
  83
  84 vec4 texture1DProjLod(const sampler1D sampler, const vec2 coord, const float lod)
  85 {
  86    vec4 pcoord;
  87    pcoord.x = coord.x / coord.y;
  88    pcoord.w = lod;
  89    __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
  90 }
  91
  92 vec4 texture1DProjLod(const sampler1D sampler, const vec4 coord, const float lod)
  93 {
  94    vec4 pcoord;
  95    pcoord.x = coord.x / coord.z;
  96    pcoord.w = lod;
  97    __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
  98 }
  99
 100
 101
 102 vec4 texture2DLod(const sampler2D sampler, const vec2 coord, const float lod)
 103 {
 104    vec4 coord4;
 105    coord4.xy = coord.xy;
 106    coord4.w = lod;
 107    __asm vec4_tex_2d_bias __retVal, sampler, coord4;
 108 }
 109
 110 vec4 texture2DProjLod(const sampler2D sampler, const vec3 coord, const float lod)
 111 {
 112    vec4 pcoord;
 113    pcoord.xy = coord.xy / coord.z;
 114    pcoord.w = lod;
 115    __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
 116 }
 117
 118 vec4 texture2DProjLod(const sampler2D sampler, const vec4 coord, const float lod)
 119 {
 120    vec4 pcoord;
 121    pcoord.xy = coord.xy / coord.z;
 122    pcoord.w = lod;
 123    __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
 124 }
 125
 126
 127 vec4 texture3DLod(const sampler3D sampler, const vec3 coord, const float lod)
 128 {
 129    vec4 coord4;
 130    coord4.xyz = coord.xyz;
 131    coord4.w = lod;
 132    __asm vec4_tex_3d_bias __retVal, sampler, coord4;
 133 }
 134
 135 vec4 texture3DProjLod(const sampler3D sampler, const vec4 coord, const float lod)
 136 {
 137    // do projection here (there's no vec4_tex_3d_bias_proj instruction)
 138    vec4 pcoord;
 139    pcoord.xyz = coord.xyz / coord.w;
 140    pcoord.w = lod;
 141    __asm vec4_tex_3d_bias __retVal, sampler, pcoord;
 142 }
 143
 144
 145 vec4 textureCubeLod(const samplerCube sampler, const vec3 coord, const float lod)
 146 {
 147    vec4 coord4;
 148    coord4.xyz = coord;
 149    coord4.w = lod;
 150    __asm vec4_tex_cube __retVal, sampler, coord4;
 151 }
 152
 153
 154 vec4 shadow1DLod(const sampler1DShadow sampler, const vec3 coord, const float lod)
 155 {
 156    vec4 coord4;
 157    coord4.xyz = coord;
 158    coord4.w = lod;
 159    __asm vec4_tex_1d_bias_shadow __retVal, sampler, coord4;
 160 }
 161
 162 vec4 shadow1DProjLod(const sampler1DShadow sampler, const vec4 coord,
 163                      const float lod)
 164 {
 165    vec4 pcoord;
 166    pcoord.x = coord.x / coord.w;
 167    pcoord.z = coord.z;
 168    pcoord.w = lod;
 169    __asm vec4_tex_1d_bias_shadow __retVal, sampler, pcoord;
 170 }
 171
 172
 173 vec4 shadow2DLod(const sampler2DShadow sampler, const vec3 coord, const float lod)
 174 {
 175    vec4 coord4;
 176    coord4.xyz = coord;
 177    coord4.w = lod;
 178    __asm vec4_tex_2d_bias_shadow __retVal, sampler, coord4;
 179 }
 180
 181 vec4 shadow2DProjLod(const sampler2DShadow sampler, const vec4 coord,
 182                      const float lod)
 183 {
 184    vec4 pcoord;
 185    pcoord.xy = coord.xy / coord.w;
 186    pcoord.z = coord.z;
 187    pcoord.w = lod;
 188    __asm vec4_tex_2d_bias_shadow __retVal, sampler, pcoord;
 189 }
 190
 191
 192 //// GL_EXT_texture_array
 193
 194 vec4 texture1DArrayLod(const sampler1DArray sampler, const vec2 coord, const float lod)
 195 {
 196    vec4 coord4;
 197    coord4.xy = coord;
 198    coord4.w = lod;
 199    __asm vec4_tex_1d_array_bias __retVal, sampler, coord4;
 200 }
 201
 202
 203 vec4 texture2DArrayLod(const sampler2DArray sampler, const vec3 coord, const float lod)
 204 {
 205    vec4 coord4;
 206    coord4.xyz = coord;
 207    coord4.w = lod;
 208    __asm vec4_tex_2d_array_bias __retVal, sampler, coord4;
 209 }
 210