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/mtypes.h"
  38 #include "vbo.h"
  39 #include "vbo_attrib.h"
  40
  41 #include "main/imports.h"
  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 of the VBO to use for glBegin/glVertex/glEnd-style rendering.
  51  */
  52 #define VBO_VERT_BUFFER_SIZE (1024*64)  /* bytes */
  53
  54
  55 /** Current vertex program mode */
  56 enum vp_mode {
  57    VP_NONE,   /**< fixed function */
  58    VP_ARB     /**< ARB vertex program or GLSL vertex shader */
  59 };
  60
  61
  62 struct vbo_exec_eval1_map {
  63    struct gl_1d_map *map;
  64    GLuint sz;
  65 };
  66
  67 struct vbo_exec_eval2_map {
  68    struct gl_2d_map *map;
  69    GLuint sz;
  70 };
  71
  72
  73
  74 struct vbo_exec_copied_vtx {
  75    fi_type buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
  76    GLuint nr;
  77 };
  78
  79
  80 struct vbo_exec_context
  81 {
  82    struct gl_context *ctx;
  83    GLvertexformat vtxfmt;
  84    GLvertexformat vtxfmt_noop;
  85    GLboolean validating; /**< if we're in the middle of state validation */
  86
  87    struct {
  88       struct gl_buffer_object *bufferobj;
  89
  90       GLuint vertex_size;       /* in dwords */
  91
  92       struct _mesa_prim prim[VBO_MAX_PRIM];
  93       GLuint prim_count;
  94
  95       fi_type *buffer_map;
  96       fi_type *buffer_ptr;              /* cursor, points into buffer */
  97       GLuint   buffer_used;             /* in bytes */
  98       fi_type vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
  99
 100       GLuint vert_count;   /**< Number of vertices currently in buffer */
 101       GLuint max_vert;     /**< Max number of vertices allowed in buffer */
 102       struct vbo_exec_copied_vtx copied;
 103
 104       GLbitfield64 enabled;             /**< mask of enabled vbo arrays. */
 105       GLubyte attrsz[VBO_ATTRIB_MAX];   /**< nr. of attrib components (1..4) */
 106       GLenum attrtype[VBO_ATTRIB_MAX];  /**< GL_FLOAT, GL_DOUBLE, GL_INT, etc */
 107       GLubyte active_sz[VBO_ATTRIB_MAX];  /**< attrib size (nr. 32-bit words) */
 108
 109       /** pointers into the current 'vertex' array, declared above */
 110       fi_type *attrptr[VBO_ATTRIB_MAX];
 111
 112       struct gl_vertex_array arrays[VERT_ATTRIB_MAX];
 113
 114       /* According to program mode, the values above plus current
 115        * values are squashed down to the 32 attributes passed to the
 116        * vertex program below:
 117        */
 118       const struct gl_vertex_array *inputs[VERT_ATTRIB_MAX];
 119    } vtx;
 120
 121    struct {
 122       GLboolean recalculate_maps;
 123       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 124       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 125    } eval;
 126
 127    struct {
 128       /* Arrays and current values manipulated according to program
 129        * mode, etc.  These are the attributes as seen by vertex
 130        * programs:
 131        */
 132       const struct gl_vertex_array *inputs[VERT_ATTRIB_MAX];
 133       GLboolean recalculate_inputs;
 134    } array;
 135
 136    /* Which flags to set in vbo_exec_begin_vertices() */
 137    GLbitfield begin_vertices_flags;
 138
 139 #ifdef DEBUG
 140    GLint flush_call_depth;
 141 #endif
 142 };
 143
 144
 145
 146 /* External API:
 147  */
 148 void vbo_exec_init( struct gl_context *ctx );
 149 void vbo_exec_destroy( struct gl_context *ctx );
 150
 151
 152 /* Internal functions:
 153  */
 154 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 155 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 156
 157
 158 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 159 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 160
 161
 162 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 163
 164 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 165                                      GLfloat u, GLfloat v );
 166
 167 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 168                                      GLfloat u);
 169
 170 #endif