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    GLubyte mode;    /**< GL_POINTS, GL_LINES, GL_QUAD_STRIP, etc */
  46
  47    /**
  48     * tnl: If true, line stipple emulation will reset the pattern walker.
  49     * vbo: If false and the primitive is a line loop, the first vertex is
  50     *      the beginning of the line loop and it won't be drawn.
  51     *      Instead, it will be moved to the end.
  52     */
  53    bool begin;
  54
  55    /**
  56     * tnl: If true and the primitive is a line loop, it will be closed.
  57     * vbo: Same as tnl.
  58     */
  59    bool end;
  60
  61    GLuint start;
  62    GLuint count;
  63    GLint basevertex;
  64    GLuint draw_id;
  65 };
  66
  67 /* Would like to call this a "vbo_index_buffer", but this would be
  68  * confusing as the indices are not neccessarily yet in a non-null
  69  * buffer object.
  70  */
  71 struct _mesa_index_buffer
  72 {
  73    GLuint count;
  74    uint8_t index_size_shift; /* logbase2(index_size) */
  75    struct gl_buffer_object *obj;
  76    const void *ptr;
  77 };
  78
  79
  80 void
  81 _mesa_initialize_exec_dispatch(const struct gl_context *ctx,
  82                                struct _glapi_table *exec);
  83
  84
  85 void GLAPIENTRY
  86 _mesa_DrawArrays(GLenum mode, GLint first, GLsizei count);
  87
  88
  89 void GLAPIENTRY
  90 _mesa_DrawArraysInstanced(GLenum mode, GLint first, GLsizei count,
  91                           GLsizei primcount);
  92
  93
  94 void GLAPIENTRY
  95 _mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
  96                    const GLvoid *indices);
  97
  98
  99 void GLAPIENTRY
 100 _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
 101                         GLenum type, const GLvoid *indices);
 102
 103
 104 void GLAPIENTRY
 105 _mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
 106                              const GLvoid *indices, GLint basevertex);
 107
 108
 109 void GLAPIENTRY
 110 _mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
 111                                   GLsizei count, GLenum type,
 112                                   const GLvoid *indices,
 113                                   GLint basevertex);
 114
 115
 116 void GLAPIENTRY
 117 _mesa_DrawTransformFeedback(GLenum mode, GLuint name);
 118
 119
 120
 121 void GLAPIENTRY
 122 _mesa_MultiDrawArrays(GLenum mode, const GLint *first,
 123                       const GLsizei *count, GLsizei primcount);
 124
 125
 126 void GLAPIENTRY
 127 _mesa_MultiDrawElements(GLenum mode, const GLsizei *count, GLenum type,
 128                         const GLvoid *const *indices, GLsizei primcount);
 129
 130
 131 void GLAPIENTRY
 132 _mesa_MultiDrawElementsBaseVertex(GLenum mode,
 133                                   const GLsizei *count, GLenum type,
 134                                   const GLvoid * const * indices, GLsizei primcount,
 135                                   const GLint *basevertex);
 136
 137
 138 void GLAPIENTRY
 139 _mesa_MultiModeDrawArraysIBM(const GLenum * mode, const GLint * first,
 140                              const GLsizei * count,
 141                              GLsizei primcount, GLint modestride);
 142
 143
 144 void GLAPIENTRY
 145 _mesa_MultiModeDrawElementsIBM(const GLenum * mode, const GLsizei * count,
 146                                GLenum type, const GLvoid * const * indices,
 147                                GLsizei primcount, GLint modestride);
 148
 149
 150 #ifdef __cplusplus
 151 } // extern "C"
 152 #endif
 153
 154 #endif