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       GLubyte attrsz[VBO_ATTRIB_MAX];   /**< nr. of attrib components (1..4) */
 105       GLenum attrtype[VBO_ATTRIB_MAX];  /**< GL_FLOAT, GL_DOUBLE, GL_INT, etc */
 106       GLubyte active_sz[VBO_ATTRIB_MAX];  /**< attrib size (nr. 32-bit words) */
 107
 108       /** pointers into the current 'vertex' array, declared above */
 109       fi_type *attrptr[VBO_ATTRIB_MAX];
 110
 111       struct gl_client_array arrays[VERT_ATTRIB_MAX];
 112
 113       /* According to program mode, the values above plus current
 114        * values are squashed down to the 32 attributes passed to the
 115        * vertex program below:
 116        */
 117       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 118    } vtx;
 119
 120    struct {
 121       GLboolean recalculate_maps;
 122       struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
 123       struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
 124    } eval;
 125
 126    struct {
 127       /* Arrays and current values manipulated according to program
 128        * mode, etc.  These are the attributes as seen by vertex
 129        * programs:
 130        */
 131       const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
 132       GLboolean recalculate_inputs;
 133    } array;
 134
 135    /* Which flags to set in vbo_exec_begin_vertices() */
 136    GLbitfield begin_vertices_flags;
 137
 138 #ifdef DEBUG
 139    GLint flush_call_depth;
 140 #endif
 141 };
 142
 143
 144
 145 /* External API:
 146  */
 147 void vbo_exec_init( struct gl_context *ctx );
 148 void vbo_exec_destroy( struct gl_context *ctx );
 149 void vbo_exec_invalidate_state( struct gl_context *ctx, GLbitfield new_state );
 150
 151
 152 /* Internal functions:
 153  */
 154
 155 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
 156 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
 157
 158
 159 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
 160 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
 161
 162
 163 void vbo_exec_eval_update( struct vbo_exec_context *exec );
 164
 165 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
 166                                      GLfloat u, GLfloat v );
 167
 168 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
 169                                      GLfloat u);
 170
 171 #endif