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/glheader.h"
  31 #include "main/mtypes.h"
  32 #include "program/ir_to_mesa.h"
  33
  34
  35 #ifdef __cplusplus
  36 extern "C" {
  37 #endif
  38
  39
  40 /**
  41  * Internal functions
  42  */
  43
  44 extern void
  45 _mesa_init_shader_state(struct gl_context * ctx);
  46
  47 extern void
  48 _mesa_free_shader_state(struct gl_context *ctx);
  49
  50
  51 extern void
  52 _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  53                        struct gl_shader *sh);
  54
  55 extern struct gl_shader *
  56 _mesa_lookup_shader(struct gl_context *ctx, GLuint name);
  57
  58 extern struct gl_shader *
  59 _mesa_lookup_shader_err(struct gl_context *ctx, GLuint name, const char *caller);
  60
  61
  62
  63 extern void
  64 _mesa_reference_shader_program_(struct gl_context *ctx,
  65                                struct gl_shader_program **ptr,
  66                                struct gl_shader_program *shProg);
  67
  68 void
  69 _mesa_reference_shader_program_data(struct gl_context *ctx,
  70                                     struct gl_shader_program_data **ptr,
  71                                     struct gl_shader_program_data *data);
  72
  73 static inline void
  74 _mesa_reference_shader_program(struct gl_context *ctx,
  75                                struct gl_shader_program **ptr,
  76                                struct gl_shader_program *shProg)
  77 {
  78    if (*ptr != shProg)
  79       _mesa_reference_shader_program_(ctx, ptr, shProg);
  80 }
  81
  82 extern struct gl_shader *
  83 _mesa_new_shader(GLuint name, gl_shader_stage type);
  84
  85 extern void
  86 _mesa_delete_shader(struct gl_context *ctx, struct gl_shader *sh);
  87
  88 extern void
  89 _mesa_delete_linked_shader(struct gl_context *ctx,
  90                            struct gl_linked_shader *sh);
  91
  92 extern struct gl_shader_program *
  93 _mesa_lookup_shader_program(struct gl_context *ctx, GLuint name);
  94
  95 extern struct gl_shader_program *
  96 _mesa_lookup_shader_program_err(struct gl_context *ctx, GLuint name,
  97                                 const char *caller);
  98
  99 extern struct gl_shader_program *
 100 _mesa_new_shader_program(GLuint name);
 101
 102 extern struct gl_shader_program_data *
 103 _mesa_create_shader_program_data(void);
 104
 105 extern void
 106 _mesa_clear_shader_program_data(struct gl_context *ctx,
 107                                 struct gl_shader_program *shProg);
 108
 109 extern void
 110 _mesa_free_shader_program_data(struct gl_context *ctx,
 111                                struct gl_shader_program *shProg);
 112
 113 extern void
 114 _mesa_delete_shader_program(struct gl_context *ctx,
 115                             struct gl_shader_program *shProg);
 116
 117
 118 extern void
 119 _mesa_init_shader_object_functions(struct dd_function_table *driver);
 120
 121 static inline gl_shader_stage
 122 _mesa_shader_enum_to_shader_stage(GLenum v)
 123 {
 124    switch (v) {
 125    case GL_VERTEX_SHADER:
 126       return MESA_SHADER_VERTEX;
 127    case GL_FRAGMENT_SHADER:
 128       return MESA_SHADER_FRAGMENT;
 129    case GL_GEOMETRY_SHADER:
 130       return MESA_SHADER_GEOMETRY;
 131    case GL_TESS_CONTROL_SHADER:
 132       return MESA_SHADER_TESS_CTRL;
 133    case GL_TESS_EVALUATION_SHADER:
 134       return MESA_SHADER_TESS_EVAL;
 135    case GL_COMPUTE_SHADER:
 136       return MESA_SHADER_COMPUTE;
 137    default:
 138       unreachable("bad value in _mesa_shader_enum_to_shader_stage()");
 139    }
 140 }
 141
 142 /* 8 bytes + another underscore */
 143 #define MESA_SUBROUTINE_PREFIX_LEN 9
 144 static inline const char *
 145 _mesa_shader_stage_to_subroutine_prefix(gl_shader_stage stage)
 146 {
 147   switch (stage) {
 148   case MESA_SHADER_VERTEX:
 149     return "__subu_v";
 150   case MESA_SHADER_GEOMETRY:
 151     return "__subu_g";
 152   case MESA_SHADER_FRAGMENT:
 153     return "__subu_f";
 154   case MESA_SHADER_COMPUTE:
 155     return "__subu_c";
 156   case MESA_SHADER_TESS_CTRL:
 157     return "__subu_t";
 158   case MESA_SHADER_TESS_EVAL:
 159     return "__subu_e";
 160   default:
 161     return NULL;
 162   }
 163 }
 164
 165 static inline gl_shader_stage
 166 _mesa_shader_stage_from_subroutine_uniform(GLenum subuniform)
 167 {
 168    switch (subuniform) {
 169    case GL_VERTEX_SUBROUTINE_UNIFORM:
 170       return MESA_SHADER_VERTEX;
 171    case GL_GEOMETRY_SUBROUTINE_UNIFORM:
 172       return MESA_SHADER_GEOMETRY;
 173    case GL_FRAGMENT_SUBROUTINE_UNIFORM:
 174       return MESA_SHADER_FRAGMENT;
 175    case GL_COMPUTE_SUBROUTINE_UNIFORM:
 176       return MESA_SHADER_COMPUTE;
 177    case GL_TESS_CONTROL_SUBROUTINE_UNIFORM:
 178       return MESA_SHADER_TESS_CTRL;
 179    case GL_TESS_EVALUATION_SUBROUTINE_UNIFORM:
 180       return MESA_SHADER_TESS_EVAL;
 181    }
 182    unreachable("not reached");
 183 }
 184
 185 static inline gl_shader_stage
 186 _mesa_shader_stage_from_subroutine(GLenum subroutine)
 187 {
 188    switch (subroutine) {
 189    case GL_VERTEX_SUBROUTINE:
 190       return MESA_SHADER_VERTEX;
 191    case GL_GEOMETRY_SUBROUTINE:
 192       return MESA_SHADER_GEOMETRY;
 193    case GL_FRAGMENT_SUBROUTINE:
 194       return MESA_SHADER_FRAGMENT;
 195    case GL_COMPUTE_SUBROUTINE:
 196       return MESA_SHADER_COMPUTE;
 197    case GL_TESS_CONTROL_SUBROUTINE:
 198       return MESA_SHADER_TESS_CTRL;
 199    case GL_TESS_EVALUATION_SUBROUTINE:
 200       return MESA_SHADER_TESS_EVAL;
 201    }
 202    unreachable("not reached");
 203 }
 204
 205 static inline GLenum
 206 _mesa_shader_stage_to_subroutine(gl_shader_stage stage)
 207 {
 208    switch (stage) {
 209    case MESA_SHADER_VERTEX:
 210       return GL_VERTEX_SUBROUTINE;
 211    case MESA_SHADER_GEOMETRY:
 212       return GL_GEOMETRY_SUBROUTINE;
 213    case MESA_SHADER_FRAGMENT:
 214       return GL_FRAGMENT_SUBROUTINE;
 215    case MESA_SHADER_COMPUTE:
 216       return GL_COMPUTE_SUBROUTINE;
 217    case MESA_SHADER_TESS_CTRL:
 218       return GL_TESS_CONTROL_SUBROUTINE;
 219    case MESA_SHADER_TESS_EVAL:
 220       return GL_TESS_EVALUATION_SUBROUTINE;
 221    case MESA_SHADER_NONE:
 222       break;
 223    }
 224    unreachable("not reached");
 225 }
 226
 227 static inline GLenum
 228 _mesa_shader_stage_to_subroutine_uniform(gl_shader_stage stage)
 229 {
 230    switch (stage) {
 231    case MESA_SHADER_VERTEX:
 232       return GL_VERTEX_SUBROUTINE_UNIFORM;
 233    case MESA_SHADER_GEOMETRY:
 234       return GL_GEOMETRY_SUBROUTINE_UNIFORM;
 235    case MESA_SHADER_FRAGMENT:
 236       return GL_FRAGMENT_SUBROUTINE_UNIFORM;
 237    case MESA_SHADER_COMPUTE:
 238       return GL_COMPUTE_SUBROUTINE_UNIFORM;
 239    case MESA_SHADER_TESS_CTRL:
 240       return GL_TESS_CONTROL_SUBROUTINE_UNIFORM;
 241    case MESA_SHADER_TESS_EVAL:
 242       return GL_TESS_EVALUATION_SUBROUTINE_UNIFORM;
 243    case MESA_SHADER_NONE:
 244       break;
 245    }
 246    unreachable("not reached");
 247 }
 248
 249 extern bool
 250 _mesa_validate_pipeline_io(struct gl_pipeline_object *);
 251
 252 #ifdef __cplusplus
 253 }
 254 #endif
 255
 256 #endif /* SHADEROBJ_H */