text: /*
   * Copyright 2017 Advanced Micro Devices, Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * on the rights to use, copy, modify, merge, publish, distribute, sub
   * license, and/or sell copies of the Software, and to permit persons to whom
   * the Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
   * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
   * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
   * USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef TGSI_FROM_MESA_H
  #define TGSI_FROM_MESA_H
  
  #include <stdbool.h>
  
  #include "pipe/p_compiler.h"
  #include "pipe/p_defines.h"
  #include "pipe/p_shader_tokens.h"
  
  #include "compiler/shader_enums.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  void
  tgsi_get_gl_varying_semantic(gl_varying_slot attr,
                               bool needs_texcoord_semantic,
                               unsigned *semantic_name,
                               unsigned *semantic_index);
  
  unsigned
  tgsi_get_generic_gl_varying_index(gl_varying_slot attr,
                                    bool needs_texcoord_semantic);
  
  void
  tgsi_get_gl_frag_result_semantic(gl_frag_result frag_result,
                                   unsigned *semantic_name,
                                   unsigned *semantic_index);
  
  static inline enum pipe_shader_type
  pipe_shader_type_from_mesa(gl_shader_stage stage)
  {
     switch (stage) {
     case MESA_SHADER_VERTEX:
        return PIPE_SHADER_VERTEX;
     case MESA_SHADER_TESS_CTRL:
        return PIPE_SHADER_TESS_CTRL;
     case MESA_SHADER_TESS_EVAL:
        return PIPE_SHADER_TESS_EVAL;
     case MESA_SHADER_GEOMETRY:
        return PIPE_SHADER_GEOMETRY;
     case MESA_SHADER_FRAGMENT:
        return PIPE_SHADER_FRAGMENT;
     case MESA_SHADER_COMPUTE:
     case MESA_SHADER_KERNEL:
        return PIPE_SHADER_COMPUTE;
     default:
        unreachable("bad shader stage");
     }
  }
  
  static inline gl_shader_stage
  tgsi_processor_to_shader_stage(unsigned processor)
  {
     switch (processor) {
     case PIPE_SHADER_FRAGMENT:  return MESA_SHADER_FRAGMENT;
     case PIPE_SHADER_VERTEX:    return MESA_SHADER_VERTEX;
     case PIPE_SHADER_GEOMETRY:  return MESA_SHADER_GEOMETRY;
     case PIPE_SHADER_TESS_CTRL: return MESA_SHADER_TESS_CTRL;
     case PIPE_SHADER_TESS_EVAL: return MESA_SHADER_TESS_EVAL;
     case PIPE_SHADER_COMPUTE:   return MESA_SHADER_COMPUTE;
     default:
        unreachable("invalid TGSI processor");
     }
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* TGSI_FROM_MESA_H */
  