src/mesa/main/shaderobj.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2004-2007  Brian Paul   All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef SHADEROBJ_H
  27 #define SHADEROBJ_H
  28
  29
  30 #include "main/compiler.h"
  31 #include "main/glheader.h"
  32 #include "main/mtypes.h"
  33 #include "program/ir_to_mesa.h"
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /**
  42  * Internal functions
  43  */
  44
  45 extern void
  46 _mesa_init_shader_state(struct gl_context * ctx);
  47
  48 extern void
  49 _mesa_free_shader_state(struct gl_context *ctx);
  50
  51
  52 extern void
  53 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  54                        struct gl_shader *sh);
  55
  56 extern struct gl_shader *
  57 _mesa_lookup_shader(struct gl_context *ctx, GLuint name);
  58
  59 extern struct gl_shader *
  60 _mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
  61
  62
  63
  64 extern void
  65 _mesa_reference_shader_program_(struct gl_context *ctx,
  66                                struct gl_shader_program **ptr,
  67                                struct gl_shader_program *shProg);
  68
  69 void
  70 _mesa_reference_shader_program_data(struct gl_context *ctx,
  71                                     struct gl_shader_program_data **ptr,
  72                                     struct gl_shader_program_data *data);
  73
  74 static inline void
  75 _mesa_reference_shader_program(struct gl_context *ctx,
  76                                struct gl_shader_program **ptr,
  77                                struct gl_shader_program *shProg)
  78 {
  79    if (*ptr != shProg)
  80       _mesa_reference_shader_program_(ctx, ptr, shProg);
  81 }
  82
  83 extern struct gl_shader *
  84 _mesa_new_shader(GLuint name, gl_shader_stage type);
  85
  86 extern void
  87 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
  88
  89 extern void
  90 _mesa_delete_linked_shader(struct gl_context *ctx,
  91                            struct gl_linked_shader *sh);
  92
  93 extern struct gl_shader_program *
  94 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  95
  96 extern struct gl_shader_program *
  97 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
  98                                 const char *caller);
  99
 100 extern struct gl_shader_program *
 101 _mesa_new_shader_program(GLuint name);
 102
 103 extern void
 104 _mesa_clear_shader_program_data(struct gl_context *ctx,
 105                                 struct gl_shader_program *shProg);
 106
 107 extern void
 108 _mesa_free_shader_program_data(struct gl_context *ctx,
 109                                struct gl_shader_program *shProg);
 110
 111 extern void
 112 _mesa_delete_shader_program(struct gl_context *ctx,
 113                             struct gl_shader_program *shProg);
 114
 115
 116 extern void
 117 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 118
 119 static inline gl_shader_stage
 120 _mesa_shader_enum_to_shader_stage(GLenum v)
 121 {
 122    switch (v) {
 123    case GL_VERTEX_SHADER:
 124       return MESA_SHADER_VERTEX;
 125    case GL_FRAGMENT_SHADER:
 126       return MESA_SHADER_FRAGMENT;
 127    case GL_GEOMETRY_SHADER:
 128       return MESA_SHADER_GEOMETRY;
 129    case GL_TESS_CONTROL_SHADER:
 130       return MESA_SHADER_TESS_CTRL;
 131    case GL_TESS_EVALUATION_SHADER:
 132       return MESA_SHADER_TESS_EVAL;
 133    case GL_COMPUTE_SHADER:
 134       return MESA_SHADER_COMPUTE;
 135    default:
 136       unreachable("bad value in _mesa_shader_enum_to_shader_stage()");
 137    }
 138 }
 139
 140 /* 8 bytes + another underscore */
 141 #define MESA_SUBROUTINE_PREFIX_LEN 9
 142 static inline const char *
 143 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 144 {
 145   switch (stage) {
 146   case MESA_SHADER_VERTEX:
 147     return "__subu_v";
 148   case MESA_SHADER_GEOMETRY:
 149     return "__subu_g";
 150   case MESA_SHADER_FRAGMENT:
 151     return "__subu_f";
 152   case MESA_SHADER_COMPUTE:
 153     return "__subu_c";
 154   case MESA_SHADER_TESS_CTRL:
 155     return "__subu_t";
 156   case MESA_SHADER_TESS_EVAL:
 157     return "__subu_e";
 158   default:
 159     return NULL;
 160   }
 161 }
 162
 163 static inline gl_shader_stage
 164 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 165 {
 166    switch (subuniform) {
 167    case GL_VERTEX_SUBROUTINE_UNIFORM:
 168       return MESA_SHADER_VERTEX;
 169    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 170       return MESA_SHADER_GEOMETRY;
 171    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 172       return MESA_SHADER_FRAGMENT;
 173    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 174       return MESA_SHADER_COMPUTE;
 175    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 176       return MESA_SHADER_TESS_CTRL;
 177    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 178       return MESA_SHADER_TESS_EVAL;
 179    }
 180    unreachable("not reached");
 181 }
 182
 183 static inline gl_shader_stage
 184 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 185 {
 186    switch (subroutine) {
 187    case GL_VERTEX_SUBROUTINE:
 188       return MESA_SHADER_VERTEX;
 189    case GL_GEOMETRY_SUBROUTINE:
 190       return MESA_SHADER_GEOMETRY;
 191    case GL_FRAGMENT_SUBROUTINE:
 192       return MESA_SHADER_FRAGMENT;
 193    case GL_COMPUTE_SUBROUTINE:
 194       return MESA_SHADER_COMPUTE;
 195    case GL_TESS_CONTROL_SUBROUTINE:
 196       return MESA_SHADER_TESS_CTRL;
 197    case GL_TESS_EVALUATION_SUBROUTINE:
 198       return MESA_SHADER_TESS_EVAL;
 199    }
 200    unreachable("not reached");
 201 }
 202
 203 static inline GLenum
 204 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 205 {
 206    switch (stage) {
 207    case MESA_SHADER_VERTEX:
 208       return GL_VERTEX_SUBROUTINE;
 209    case MESA_SHADER_GEOMETRY:
 210       return GL_GEOMETRY_SUBROUTINE;
 211    case MESA_SHADER_FRAGMENT:
 212       return GL_FRAGMENT_SUBROUTINE;
 213    case MESA_SHADER_COMPUTE:
 214       return GL_COMPUTE_SUBROUTINE;
 215    case MESA_SHADER_TESS_CTRL:
 216       return GL_TESS_CONTROL_SUBROUTINE;
 217    case MESA_SHADER_TESS_EVAL:
 218       return GL_TESS_EVALUATION_SUBROUTINE;
 219    case MESA_SHADER_NONE:
 220       break;
 221    }
 222    unreachable("not reached");
 223 }
 224
 225 static inline GLenum
 226 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 227 {
 228    switch (stage) {
 229    case MESA_SHADER_VERTEX:
 230       return GL_VERTEX_SUBROUTINE_UNIFORM;
 231    case MESA_SHADER_GEOMETRY:
 232       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 233    case MESA_SHADER_FRAGMENT:
 234       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 235    case MESA_SHADER_COMPUTE:
 236       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 237    case MESA_SHADER_TESS_CTRL:
 238       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 239    case MESA_SHADER_TESS_EVAL:
 240       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 241    case MESA_SHADER_NONE:
 242       break;
 243    }
 244    unreachable("not reached");
 245 }
 246
 247 extern bool
 248 _mesa_validate_pipeline_io(struct gl_pipeline_object *);
 249
 250 #ifdef __cplusplus
 251 }
 252 #endif
 253
 254 #endif /* SHADEROBJ_H */