src/mesa/vbo/vbo.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  * \file vbo_context.h
  27  * \brief VBO builder module datatypes and definitions.
  28  * \author Keith Whitwell
  29  */
  30
  31
  32 #ifndef _VBO_H
  33 #define _VBO_H
  34
  35 #include <stdbool.h>
  36 #include "main/glheader.h"
  37
  38 #ifdef __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 struct gl_vertex_array;
  43 struct gl_context;
  44 struct gl_transform_feedback_object;
  45
  46 struct _mesa_prim {
  47    GLuint mode:8;    /**< GL_POINTS, GL_LINES, GL_QUAD_STRIP, etc */
  48    GLuint indexed:1;
  49    GLuint begin:1;
  50    GLuint end:1;
  51    GLuint weak:1;
  52    GLuint no_current_update:1;
  53    GLuint is_indirect:1;
  54    GLuint pad:18;
  55
  56    GLuint start;
  57    GLuint count;
  58    GLint basevertex;
  59    GLuint num_instances;
  60    GLuint base_instance;
  61    GLuint draw_id;
  62
  63    GLsizeiptr indirect_offset;
  64 };
  65
  66 /* Would like to call this a "vbo_index_buffer", but this would be
  67  * confusing as the indices are not neccessarily yet in a non-null
  68  * buffer object.
  69  */
  70 struct _mesa_index_buffer {
  71    GLuint count;
  72    unsigned index_size;
  73    struct gl_buffer_object *obj;
  74    const void *ptr;
  75 };
  76
  77
  78
  79 GLboolean _vbo_CreateContext( struct gl_context *ctx );
  80 void _vbo_DestroyContext( struct gl_context *ctx );
  81
  82
  83 void
  84 vbo_initialize_exec_dispatch(const struct gl_context *ctx,
  85                              struct _glapi_table *exec);
  86
  87 void
  88 vbo_initialize_save_dispatch(const struct gl_context *ctx,
  89                              struct _glapi_table *exec);
  90
  91 void vbo_exec_FlushVertices(struct gl_context *ctx, GLuint flags);
  92 void vbo_save_SaveFlushVertices(struct gl_context *ctx);
  93 GLboolean vbo_save_NotifyBegin(struct gl_context *ctx, GLenum mode);
  94 void vbo_save_NewList(struct gl_context *ctx, GLuint list, GLenum mode);
  95 void vbo_save_EndList(struct gl_context *ctx);
  96 void vbo_save_BeginCallList(struct gl_context *ctx, struct gl_display_list *list);
  97 void vbo_save_EndCallList(struct gl_context *ctx);
  98
  99
 100 typedef void (*vbo_draw_func)( struct gl_context *ctx,
 101                                const struct _mesa_prim *prims,
 102                                GLuint nr_prims,
 103                                const struct _mesa_index_buffer *ib,
 104                                GLboolean index_bounds_valid,
 105                                GLuint min_index,
 106                                GLuint max_index,
 107                                struct gl_transform_feedback_object *tfb_vertcount,
 108                                unsigned stream,
 109                                struct gl_buffer_object *indirect);
 110
 111
 112 typedef void (*vbo_indirect_draw_func)(
 113    struct gl_context *ctx,
 114    GLuint mode,
 115    struct gl_buffer_object *indirect_data,
 116    GLsizeiptr indirect_offset,
 117    unsigned draw_count,
 118    unsigned stride,
 119    struct gl_buffer_object *indirect_params,
 120    GLsizeiptr indirect_params_offset,
 121    const struct _mesa_index_buffer *ib);
 122
 123
 124
 125
 126 /* Utility function to cope with various constraints on tnl modules or
 127  * hardware.  This can be used to split an incoming set of arrays and
 128  * primitives against the following constraints:
 129  *    - Maximum number of indices in index buffer.
 130  *    - Maximum number of vertices referenced by index buffer.
 131  *    - Maximum hardware vertex buffer size.
 132  */
 133 struct split_limits {
 134    GLuint max_verts;
 135    GLuint max_indices;
 136    GLuint max_vb_size;          /* bytes */
 137 };
 138
 139
 140 void vbo_split_prims( struct gl_context *ctx,
 141                       const struct gl_vertex_array *arrays[],
 142                       const struct _mesa_prim *prim,
 143                       GLuint nr_prims,
 144                       const struct _mesa_index_buffer *ib,
 145                       GLuint min_index,
 146                       GLuint max_index,
 147                       vbo_draw_func draw,
 148                       const struct split_limits *limits );
 149
 150
 151 /* Helpers for dealing translating away non-zero min_index.
 152  */
 153 GLboolean vbo_all_varyings_in_vbos( const struct gl_vertex_array *arrays[] );
 154 GLboolean vbo_any_varyings_in_vbos( const struct gl_vertex_array *arrays[] );
 155
 156 void vbo_rebase_prims( struct gl_context *ctx,
 157                        const struct gl_vertex_array *arrays[],
 158                        const struct _mesa_prim *prim,
 159                        GLuint nr_prims,
 160                        const struct _mesa_index_buffer *ib,
 161                        GLuint min_index,
 162                        GLuint max_index,
 163                        vbo_draw_func draw );
 164
 165 static inline int
 166 vbo_sizeof_ib_type(GLenum type)
 167 {
 168    switch (type) {
 169    case GL_UNSIGNED_INT:
 170       return sizeof(GLuint);
 171    case GL_UNSIGNED_SHORT:
 172       return sizeof(GLushort);
 173    case GL_UNSIGNED_BYTE:
 174       return sizeof(GLubyte);
 175    default:
 176       assert(!"unsupported index data type");
 177       /* In case assert is turned off */
 178       return 0;
 179    }
 180 }
 181
 182 void
 183 vbo_delete_minmax_cache(struct gl_buffer_object *bufferObj);
 184
 185 void
 186 vbo_get_minmax_indices(struct gl_context *ctx, const struct _mesa_prim *prim,
 187                        const struct _mesa_index_buffer *ib,
 188                        GLuint *min_index, GLuint *max_index, GLuint nr_prims);
 189
 190 void vbo_use_buffer_objects(struct gl_context *ctx);
 191
 192 void vbo_always_unmap_buffers(struct gl_context *ctx);
 193
 194 void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func);
 195
 196 void vbo_set_indirect_draw_func(struct gl_context *ctx,
 197                                 vbo_indirect_draw_func func);
 198
 199 void vbo_bind_arrays(struct gl_context *ctx);
 200
 201 size_t
 202 vbo_count_tessellated_primitives(GLenum mode, GLuint count,
 203                                  GLuint num_instances);
 204
 205 void
 206 vbo_try_prim_conversion(struct _mesa_prim *p);
 207
 208 bool
 209 vbo_can_merge_prims(const struct _mesa_prim *p0, const struct _mesa_prim *p1);
 210
 211 void
 212 vbo_merge_prims(struct _mesa_prim *p0, const struct _mesa_prim *p1);
 213
 214 void
 215 vbo_sw_primitive_restart(struct gl_context *ctx,
 216                          const struct _mesa_prim *prim,
 217                          GLuint nr_prims,
 218                          const struct _mesa_index_buffer *ib,
 219                          struct gl_buffer_object *indirect);
 220
 221 void GLAPIENTRY
 222 _es_Color4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
 223
 224 void GLAPIENTRY
 225 _es_Normal3f(GLfloat x, GLfloat y, GLfloat z);
 226
 227 void GLAPIENTRY
 228 _es_MultiTexCoord4f(GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q);
 229
 230 void GLAPIENTRY
 231 _es_Materialfv(GLenum face, GLenum pname, const GLfloat *params);
 232
 233 void GLAPIENTRY
 234 _es_Materialf(GLenum face, GLenum pname, GLfloat param);
 235
 236 void GLAPIENTRY
 237 _es_VertexAttrib4f(GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
 238
 239 void GLAPIENTRY
 240 _es_VertexAttrib1f(GLuint indx, GLfloat x);
 241
 242 void GLAPIENTRY
 243 _es_VertexAttrib1fv(GLuint indx, const GLfloat* values);
 244
 245 void GLAPIENTRY
 246 _es_VertexAttrib2f(GLuint indx, GLfloat x, GLfloat y);
 247
 248 void GLAPIENTRY
 249 _es_VertexAttrib2fv(GLuint indx, const GLfloat* values);
 250
 251 void GLAPIENTRY
 252 _es_VertexAttrib3f(GLuint indx, GLfloat x, GLfloat y, GLfloat z);
 253
 254 void GLAPIENTRY
 255 _es_VertexAttrib3fv(GLuint indx, const GLfloat* values);
 256
 257 void GLAPIENTRY
 258 _es_VertexAttrib4fv(GLuint indx, const GLfloat* values);
 259
 260 #ifdef __cplusplus
 261 } // extern "C"
 262 #endif
 263
 264 #endif