vbo_exec.h revision 492b69f3be3e355064c67bc6f4a30d40e997ce9d 
1/**************************************************************************
2
3Copyright 2002 Tungsten Graphics Inc., Cedar Park, Texas.
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
21TUNGSTEN GRAPHICS 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 <keith@tungstengraphics.com>
31 *
32 */
33
34#ifndef __VBO_EXEC_H__
35#define __VBO_EXEC_H__
36
37#include "main/mfeatures.h"
38#include "main/mtypes.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 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 */
56enum vp_mode {
57   VP_NONE,   /**< fixed function */
58   VP_NV,     /**< NV vertex program */
59   VP_ARB     /**< ARB vertex program or GLSL vertex shader */
60};
61
62
63struct vbo_exec_eval1_map {
64   struct gl_1d_map *map;
65   GLuint sz;
66};
67
68struct vbo_exec_eval2_map {
69   struct gl_2d_map *map;
70   GLuint sz;
71};
72
73
74
75struct vbo_exec_copied_vtx {
76   GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
77   GLuint nr;
78};
79
80
81struct vbo_exec_context
82{
83   struct gl_context *ctx;
84   GLvertexformat vtxfmt;
85   GLvertexformat vtxfmt_noop;
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      GLfloat *buffer_map;
96      GLfloat *buffer_ptr;              /* cursor, points into buffer */
97      GLuint   buffer_used;             /* in bytes */
98      GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
99
100      GLuint vert_count;
101      GLuint max_vert;
102      struct vbo_exec_copied_vtx copied;
103
104      GLubyte attrsz[VBO_ATTRIB_MAX];
105      GLenum attrtype[VBO_ATTRIB_MAX];
106      GLubyte active_sz[VBO_ATTRIB_MAX];
107
108      GLfloat *attrptr[VBO_ATTRIB_MAX];
109      struct gl_client_array arrays[VERT_ATTRIB_MAX];
110
111      /* According to program mode, the values above plus current
112       * values are squashed down to the 32 attributes passed to the
113       * vertex program below:
114       */
115      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
116   } vtx;
117
118
119   struct {
120      GLboolean recalculate_maps;
121      struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
122      struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
123   } eval;
124
125   struct {
126      /* Arrays and current values manipulated according to program
127       * mode, etc.  These are the attributes as seen by vertex
128       * programs:
129       */
130      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
131      GLboolean recalculate_inputs;
132   } array;
133
134   /* Which flags to set in vbo_exec_BeginVertices() */
135   GLbitfield begin_vertices_flags;
136
137#ifdef DEBUG
138   GLint flush_call_depth;
139#endif
140};
141
142
143
144/* External API:
145 */
146void vbo_exec_init( struct gl_context *ctx );
147void vbo_exec_destroy( struct gl_context *ctx );
148void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
149
150void vbo_exec_BeginVertices( struct gl_context *ctx );
151void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
152
153
154/* Internal functions:
155 */
156void vbo_exec_array_init( struct vbo_exec_context *exec );
157void vbo_exec_array_destroy( struct vbo_exec_context *exec );
158
159
160void vbo_exec_vtx_init( struct vbo_exec_context *exec );
161void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
162
163
164#if FEATURE_beginend
165
166void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
167void vbo_exec_vtx_map( struct vbo_exec_context *exec );
168
169#else /* FEATURE_beginend */
170
171static inline void
172vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
173{
174}
175
176static inline void
177vbo_exec_vtx_map( struct vbo_exec_context *exec )
178{
179}
180
181#endif /* FEATURE_beginend */
182
183void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
184
185void vbo_exec_eval_update( struct vbo_exec_context *exec );
186
187void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
188				     GLfloat u, GLfloat v );
189
190void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
191				     GLfloat u);
192
193#endif
194