1 /**************************************************************************
2
3 Copyright 2002 Tungsten Graphics Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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 <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 */
56 enum 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
63 struct vbo_exec_eval1_map {
64 struct gl_1d_map *map;
65 GLuint sz;
66 };
67
68 struct vbo_exec_eval2_map {
69 struct gl_2d_map *map;
70 GLuint sz;
71 };
72
73
74
75 struct vbo_exec_copied_vtx {
76 GLfloat buffer[VBO_ATTRIB_MAX * 4 * VBO_MAX_COPIED_VERTS];
77 GLuint nr;
78 };
79
80
81 struct 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 */
146 void vbo_exec_init( struct gl_context *ctx );
147 void vbo_exec_destroy( struct gl_context *ctx );
148 void vbo_exec_invalidate_state( struct gl_context *ctx, GLuint new_state );
149
150 void vbo_exec_BeginVertices( struct gl_context *ctx );
151 void vbo_exec_FlushVertices( struct gl_context *ctx, GLuint flags );
152
153
154 /* Internal functions:
155 */
156 void vbo_exec_array_init( struct vbo_exec_context *exec );
157 void vbo_exec_array_destroy( struct vbo_exec_context *exec );
158
159
160 void vbo_exec_vtx_init( struct vbo_exec_context *exec );
161 void vbo_exec_vtx_destroy( struct vbo_exec_context *exec );
162
163
164 #if FEATURE_beginend
165
166 void vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap );
167 void vbo_exec_vtx_map( struct vbo_exec_context *exec );
168
169 #else /* FEATURE_beginend */
170
171 static inline void
vbo_exec_vtx_flush(struct vbo_exec_context * exec,GLboolean unmap)172 vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
173 {
174 }
175
176 static inline void
vbo_exec_vtx_map(struct vbo_exec_context * exec)177 vbo_exec_vtx_map( struct vbo_exec_context *exec )
178 {
179 }
180
181 #endif /* FEATURE_beginend */
182
183 void vbo_exec_vtx_wrap( struct vbo_exec_context *exec );
184
185 void vbo_exec_eval_update( struct vbo_exec_context *exec );
186
187 void vbo_exec_do_EvalCoord2f( struct vbo_exec_context *exec,
188 GLfloat u, GLfloat v );
189
190 void vbo_exec_do_EvalCoord1f( struct vbo_exec_context *exec,
191 GLfloat u);
192
193 #endif
194