vbo_exec.h revision 848b8605 
1/**************************************************************************
2
3Copyright 2002 VMware, Inc.
4
5All Rights Reserved.
6
7Permission is hereby granted, free of charge, to any person obtaining a
8copy of this software and associated documentation files (the "Software"),
9to deal in the Software without restriction, including without limitation
10on the rights to use, copy, modify, merge, publish, distribute, sub
11license, and/or sell copies of the Software, and to permit persons to whom
12the Software is furnished to do so, subject to the following conditions:
13
14The above copyright notice and this permission notice (including the next
15paragraph) shall be included in all copies or substantial portions of the
16Software.
17
18THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21VMWARE AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
22DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24USE 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
42/**
43 * Max number of primitives (number of glBegin/End pairs) per VBO.
44 */
45#define VBO_MAX_PRIM 64
46
47
48/**
49 * Size of the VBO to use for glBegin/glVertex/glEnd-style rendering.
50 */
51#define VBO_VERT_BUFFER_SIZE (1024*64)	/* bytes */
52
53
54/** Current vertex program mode */
55enum vp_mode {
56   VP_NONE,   /**< fixed function */
57   VP_ARB     /**< ARB vertex program or GLSL vertex shader */
58};
59
60
61struct vbo_exec_eval1_map {
62   struct gl_1d_map *map;
63   GLuint sz;
64};
65
66struct vbo_exec_eval2_map {
67   struct gl_2d_map *map;
68   GLuint sz;
69};
70
71
72
73struct vbo_exec_copied_vtx {
74   GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
75   GLuint nr;
76};
77
78
79struct vbo_exec_context
80{
81   struct gl_context *ctx;
82   GLvertexformat vtxfmt;
83   GLvertexformat vtxfmt_noop;
84   GLboolean validating; /**< if we're in the middle of state validation */
85
86   struct {
87      struct gl_buffer_object *bufferobj;
88
89      GLuint vertex_size;       /* in dwords */
90
91      struct _mesa_prim prim[VBO_MAX_PRIM];
92      GLuint prim_count;
93
94      GLfloat *buffer_map;
95      GLfloat *buffer_ptr;              /* cursor, points into buffer */
96      GLuint   buffer_used;             /* in bytes */
97      GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
98
99      GLuint vert_count;
100      GLuint max_vert;
101      struct vbo_exec_copied_vtx copied;
102
103      GLubyte attrsz[VBO_ATTRIB_MAX];
104      GLenum attrtype[VBO_ATTRIB_MAX];
105      GLubyte active_sz[VBO_ATTRIB_MAX];
106
107      GLfloat *attrptr[VBO_ATTRIB_MAX];
108      struct gl_client_array arrays[VERT_ATTRIB_MAX];
109
110      /* According to program mode, the values above plus current
111       * values are squashed down to the 32 attributes passed to the
112       * vertex program below:
113       */
114      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
115   } vtx;
116
117
118   struct {
119      GLboolean recalculate_maps;
120      struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
121      struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
122   } eval;
123
124   struct {
125      /* Arrays and current values manipulated according to program
126       * mode, etc.  These are the attributes as seen by vertex
127       * programs:
128       */
129      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
130      GLboolean recalculate_inputs;
131   } array;
132
133   /* Which flags to set in vbo_exec_BeginVertices() */
134   GLbitfield begin_vertices_flags;
135
136#ifdef DEBUG
137   GLint flush_call_depth;
138#endif
139};
140
141
142
143/* External API:
144 */
145void vbo_exec_init( struct gl_context *ctx );
146void vbo_exec_destroy( struct gl_context *ctx );
147void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
148
149void vbo_exec_BeginVertices( struct gl_context *ctx );
150void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
151
152
153/* Internal functions:
154 */
155
156void vbo_exec_vtx_init( struct vbo_exec_context *exec );
157void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
158
159
160void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
161void vbo_exec_vtx_map( struct vbo_exec_context *exec );
162
163
164void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
165
166void vbo_exec_eval_update( struct vbo_exec_context *exec );
167
168void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
169				     GLfloat u, GLfloat v );
170
171void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
172				     GLfloat u);
173
174#endif
175