src/mesa/main/draw.h

   1 /*
   2  * mesa 3-D graphics library
   3  *
   4  * Copyright (C) 1999-2006  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  * \brief Array type draw functions, the main workhorse of any OpenGL API
  27  * \author Keith Whitwell
  28  */
  29
  30
  31 #ifndef DRAW_H
  32 #define DRAW_H
  33
  34 #include <stdbool.h>
  35 #include "main/glheader.h"
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 struct gl_context;
  42
  43 struct _mesa_prim
  44 {
  45    GLuint mode:8;    /**< GL_POINTS, GL_LINES, GL_QUAD_STRIP, etc */
  46    GLuint indexed:1;
  47    GLuint begin:1;
  48    GLuint end:1;
  49    GLuint pad:21;
  50
  51    GLuint start;
  52    GLuint count;
  53    GLint basevertex;
  54    GLuint num_instances;
  55    GLuint base_instance;
  56    GLuint draw_id;
  57
  58    GLsizeiptr indirect_offset;
  59 };
  60
  61 /* Would like to call this a "vbo_index_buffer", but this would be
  62  * confusing as the indices are not neccessarily yet in a non-null
  63  * buffer object.
  64  */
  65 struct _mesa_index_buffer
  66 {
  67    GLuint count;
  68    unsigned index_size;
  69    struct gl_buffer_object *obj;
  70    const void *ptr;
  71 };
  72
  73
  74 void
  75 _mesa_initialize_exec_dispatch(const struct gl_context *ctx,
  76                                struct _glapi_table *exec);
  77
  78
  79 void
  80 _mesa_draw_indirect(struct gl_context *ctx, GLuint mode,
  81                     struct gl_buffer_object *indirect_data,
  82                     GLsizeiptr indirect_offset, unsigned draw_count,
  83                     unsigned stride,
  84                     struct gl_buffer_object *indirect_draw_count_buffer,
  85                     GLsizeiptr indirect_draw_count_offset,
  86                     const struct _mesa_index_buffer *ib);
  87
  88
  89 void GLAPIENTRY
  90 _mesa_DrawArrays(GLenum mode, GLint first, GLsizei count);
  91
  92
  93 void GLAPIENTRY
  94 _mesa_DrawArraysInstanced(GLenum mode, GLint first, GLsizei count,
  95                           GLsizei primcount);
  96
  97
  98 void GLAPIENTRY
  99 _mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
 100                    const GLvoid *indices);
 101
 102
 103 void GLAPIENTRY
 104 _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
 105                         GLenum type, const GLvoid *indices);
 106
 107
 108 void GLAPIENTRY
 109 _mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
 110                              const GLvoid *indices, GLint basevertex);
 111
 112
 113 void GLAPIENTRY
 114 _mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
 115                                   GLsizei count, GLenum type,
 116                                   const GLvoid *indices,
 117                                   GLint basevertex);
 118
 119
 120 void GLAPIENTRY
 121 _mesa_DrawTransformFeedback(GLenum mode, GLuint name);
 122
 123
 124
 125 void GLAPIENTRY
 126 _mesa_MultiDrawArrays(GLenum mode, const GLint *first,
 127                       const GLsizei *count, GLsizei primcount);
 128
 129
 130 void GLAPIENTRY
 131 _mesa_MultiDrawElements(GLenum mode, const GLsizei *count, GLenum type,
 132                         const GLvoid *const *indices, GLsizei primcount);
 133
 134
 135 void GLAPIENTRY
 136 _mesa_MultiDrawElementsBaseVertex(GLenum mode,
 137                                   const GLsizei *count, GLenum type,
 138                                   const GLvoid * const * indices, GLsizei primcount,
 139                                   const GLint *basevertex);
 140
 141
 142 void GLAPIENTRY
 143 _mesa_MultiModeDrawArraysIBM(const GLenum * mode, const GLint * first,
 144                              const GLsizei * count,
 145                              GLsizei primcount, GLint modestride);
 146
 147
 148 void GLAPIENTRY
 149 _mesa_MultiModeDrawElementsIBM(const GLenum * mode, const GLsizei * count,
 150                                GLenum type, const GLvoid * const * indices,
 151                                GLsizei primcount, GLint modestride);
 152
 153
 154 #ifdef __cplusplus
 155 } // extern "C"
 156 #endif
 157
 158 #endif