vbo_exec.h revision 3464ebd5 
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
81typedef void (*vbo_attrfv_func)( const GLfloat * );
82
83
84struct vbo_exec_context
85{
86   struct gl_context *ctx;
87   GLvertexformat vtxfmt;
88
89   struct {
90      struct gl_buffer_object *bufferobj;
91
92      GLuint vertex_size;       /* in dwords */
93
94      struct _mesa_prim prim[VBO_MAX_PRIM];
95      GLuint prim_count;
96
97      GLfloat *buffer_map;
98      GLfloat *buffer_ptr;              /* cursor, points into buffer */
99      GLuint   buffer_used;             /* in bytes */
100      GLfloat vertex[VBO_ATTRIB_MAX*4]; /* current vertex */
101
102      GLuint vert_count;
103      GLuint max_vert;
104      struct vbo_exec_copied_vtx copied;
105
106      GLubyte attrsz[VBO_ATTRIB_MAX];
107      GLubyte active_sz[VBO_ATTRIB_MAX];
108
109      GLfloat *attrptr[VBO_ATTRIB_MAX];
110      struct gl_client_array arrays[VERT_ATTRIB_MAX];
111
112      /* According to program mode, the values above plus current
113       * values are squashed down to the 32 attributes passed to the
114       * vertex program below:
115       */
116      enum vp_mode program_mode;
117      GLuint enabled_flags;
118      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
119   } vtx;
120
121
122   struct {
123      GLboolean recalculate_maps;
124      struct vbo_exec_eval1_map map1[VERT_ATTRIB_MAX];
125      struct vbo_exec_eval2_map map2[VERT_ATTRIB_MAX];
126   } eval;
127
128   struct {
129      enum vp_mode program_mode;
130      GLuint enabled_flags;
131      GLuint array_obj;
132
133      /* These just mirror the current arrayobj (todo: make arrayobj
134       * look like this and remove the mirror):
135       */
136      const struct gl_client_array *legacy_array[16];
137      const struct gl_client_array *generic_array[16];
138
139      /* Arrays and current values manipulated according to program
140       * mode, etc.  These are the attributes as seen by vertex
141       * programs:
142       */
143      const struct gl_client_array *inputs[VERT_ATTRIB_MAX];
144   } array;
145
146   /* Which flags to set in vbo_exec_BeginVertices() */
147   GLbitfield begin_vertices_flags;
148
149#ifdef DEBUG
150   GLint flush_call_depth;
151#endif
152};
153
154
155
156/* External API:
157 */
158void vbo_exec_init( struct gl_context *ctx );
159void vbo_exec_destroy( struct gl_context *ctx );
160void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
161
162void vbo_exec_BeginVertices( struct gl_context *ctx );
163void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
164
165
166/* Internal functions:
167 */
168void vbo_exec_array_init( struct vbo_exec_context *exec );
169void vbo_exec_array_destroy( struct vbo_exec_context *exec );
170
171
172void vbo_exec_vtx_init( struct vbo_exec_context *exec );
173void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
174
175#if FEATURE_beginend
176
177void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
178void vbo_exec_vtx_map( struct vbo_exec_context *exec );
179
180#else /* FEATURE_beginend */
181
182static INLINE void
183vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
184{
185}
186
187static INLINE void
188vbo_exec_vtx_map( struct vbo_exec_context *exec )
189{
190}
191
192#endif /* FEATURE_beginend */
193
194void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
195
196void vbo_exec_eval_update( struct vbo_exec_context *exec );
197
198void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
199				     GLfloat u, GLfloat v );
200
201void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
202				     GLfloat u);
203
204#endif
205