src/mesa/vbo/vbo_exec.h

   1 /**************************************************************************
   2
   3 Copyright 2002 VMware, Inc.
   4
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Keith Whitwell <keithw@vmware.com>
  31  *
  32  */
  33
  34 #ifndef VBO_EXEC_H
  35 #define VBO_EXEC_H
  36
  37 #include "main/dd.h"
  38 #include "main/imports.h"
  39 #include "vbo.h"
  40 #include "vbo_attrib.h"
  41
  42
  43 /**
  44  * Max number of primitives (number of glBegin/End pairs) per VBO.
  45  */
  46 #define VBO_MAX_PRIM 64
  47
  48
  49 /**
  50  * Size (in bytes) of the VBO to use for glBegin/glVertex/glEnd-style rendering.
  51  */
  52 #define VBO_VERT_BUFFER_SIZE (1024 * 512)
  53
  54
  55 struct vbo_exec_eval1_map {
  56    struct gl_1d_map *map;
  57    GLuint sz;
  58 };
  59
  60 struct vbo_exec_eval2_map {
  61    struct gl_2d_map *map;
  62    GLuint sz;
  63 };
  64
  65
  66
  67 struct vbo_exec_copied_vtx {
  68    fi_type buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  69    GLuint nr;
  70 };
  71
  72
  73 struct vbo_exec_context
  74 {
  75    struct gl_context *ctx;
  76    GLvertexformat vtxfmt;
  77    GLvertexformat vtxfmt_noop;
  78
  79    struct {
  80       struct gl_buffer_object *bufferobj;
  81
  82       GLuint vertex_size;       /* in dwords */
  83       GLuint vertex_size_no_pos;
  84
  85       struct _mesa_prim prim[VBO_MAX_PRIM];
  86       GLuint prim_count;
  87
  88       fi_type *buffer_map;
  89       fi_type *buffer_ptr;              /* cursor, points into buffer */
  90       GLuint   buffer_used;             /* in bytes */
  91       unsigned buffer_offset;           /* only for persistent mappings */
  92       fi_type vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  93
  94       GLuint vert_count;   /**< Number of vertices currently in buffer */
  95       GLuint max_vert;     /**< Max number of vertices allowed in buffer */
  96       struct vbo_exec_copied_vtx copied;
  97
  98       GLbitfield64 enabled;             /**< mask of enabled vbo arrays. */
  99
 100       /* Keep these packed in a structure for faster access. */
 101       struct {
 102          GLenum16 type;       /**< GL_FLOAT, GL_DOUBLE, GL_INT, etc */
 103          GLubyte active_size; /**< number of components, but can shrink */
 104          GLubyte size;        /**< number of components (1..4) */
 105       } attr[VBO_ATTRIB_MAX];
 106
 107       /** pointers into the current 'vertex' array, declared above */
 108       fi_type *attrptr[VBO_ATTRIB_MAX];
 109    } vtx;
 110
 111    struct {
 112       GLboolean recalculate_maps;
 113       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 114       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 115    } eval;
 116
 117 #ifndef NDEBUG
 118    GLint flush_call_depth;
 119 #endif
 120 };
 121
 122
 123
 124 void
 125 vbo_exec_init(struct gl_context *ctx, bool use_buffer_objects);
 126
 127 void
 128 vbo_exec_destroy(struct gl_context *ctx);
 129
 130 void
 131 vbo_exec_vtx_init(struct vbo_exec_context *exec, bool use_buffer_objects);
 132
 133 void
 134 vbo_exec_vtx_destroy(struct vbo_exec_context *exec);
 135
 136 void
 137 vbo_exec_vtx_flush(struct vbo_exec_context *exec);
 138
 139 void
 140 vbo_exec_vtx_map(struct vbo_exec_context *exec);
 141
 142 void
 143 vbo_exec_eval_update(struct vbo_exec_context *exec);
 144
 145 void
 146 vbo_exec_do_EvalCoord2f(struct vbo_exec_context *exec, GLfloat u, GLfloat v);
 147
 148 void
 149 vbo_exec_do_EvalCoord1f(struct vbo_exec_context *exec, GLfloat u);
 150
 151 #endif