2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keith@tungstengraphics.com>
28 #include "main/glheader.h"
29 #include "main/bufferobj.h"
30 #include "main/compiler.h"
31 #include "main/enums.h"
32 #include "main/mfeatures.h"
33 #include "main/state.h"
35 #include "vbo_context.h"
42 vbo_exec_debug_verts( struct vbo_exec_context
*exec
)
44 GLuint count
= exec
->vtx
.vert_count
;
47 printf("%s: %u vertices %d primitives, %d vertsize\n",
51 exec
->vtx
.vertex_size
);
53 for (i
= 0 ; i
< exec
->vtx
.prim_count
; i
++) {
54 struct _mesa_prim
*prim
= &exec
->vtx
.prim
[i
];
55 printf(" prim %d: %s%s %d..%d %s %s\n",
57 _mesa_lookup_prim_by_nr(prim
->mode
),
58 prim
->weak
? " (weak)" : "",
60 prim
->start
+ prim
->count
,
61 prim
->begin
? "BEGIN" : "(wrap)",
62 prim
->end
? "END" : "(wrap)");
68 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
69 * NOTE: Old 'parity' issue is gone.
72 vbo_copy_vertices( struct vbo_exec_context
*exec
)
74 GLuint nr
= exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
;
76 GLuint sz
= exec
->vtx
.vertex_size
;
77 GLfloat
*dst
= exec
->vtx
.copied
.buffer
;
78 const GLfloat
*src
= (exec
->vtx
.buffer_map
+
79 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].start
*
80 exec
->vtx
.vertex_size
);
83 switch (exec
->ctx
->Driver
.CurrentExecPrimitive
) {
88 for (i
= 0 ; i
< ovf
; i
++)
89 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
93 for (i
= 0 ; i
< ovf
; i
++)
94 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
98 for (i
= 0 ; i
< ovf
; i
++)
99 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
106 memcpy( dst
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
110 case GL_TRIANGLE_FAN
:
116 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
120 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
121 memcpy( dst
+sz
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
124 case GL_TRIANGLE_STRIP
:
125 /* no parity issue, but need to make sure the tri is not drawn twice */
127 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
--;
142 for (i
= 0 ; i
< ovf
; i
++)
143 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
145 case PRIM_OUTSIDE_BEGIN_END
:
155 /* TODO: populate these as the vertex is defined:
158 vbo_exec_bind_arrays( struct gl_context
*ctx
)
160 struct vbo_context
*vbo
= vbo_context(ctx
);
161 struct vbo_exec_context
*exec
= &vbo
->exec
;
162 struct gl_client_array
*arrays
= exec
->vtx
.arrays
;
163 const GLuint count
= exec
->vtx
.vert_count
;
166 GLbitfield varying_inputs
= 0x0;
168 /* Install the default (ie Current) attributes first, then overlay
171 switch (get_program_mode(exec
->ctx
)) {
173 for (attr
= 0; attr
< 16; attr
++) {
174 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
176 for (attr
= 0; attr
< MAT_ATTRIB_MAX
; attr
++) {
177 ASSERT(attr
+ 16 < Elements(exec
->vtx
.inputs
));
178 exec
->vtx
.inputs
[attr
+ 16] = &vbo
->mat_currval
[attr
];
180 map
= vbo
->map_vp_none
;
184 /* The aliasing of attributes for NV vertex programs has already
185 * occurred. NV vertex programs cannot access material values,
186 * nor attributes greater than VERT_ATTRIB_TEX7.
188 for (attr
= 0; attr
< 16; attr
++) {
189 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
190 ASSERT(attr
+ 16 < Elements(exec
->vtx
.inputs
));
191 exec
->vtx
.inputs
[attr
+ 16] = &vbo
->generic_currval
[attr
];
193 map
= vbo
->map_vp_arb
;
195 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
196 * In that case we effectively need to route the data from
197 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
199 if ((ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_POS
) == 0 &&
200 (ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_GENERIC0
)) {
201 exec
->vtx
.inputs
[16] = exec
->vtx
.inputs
[0];
202 exec
->vtx
.attrsz
[16] = exec
->vtx
.attrsz
[0];
203 exec
->vtx
.attrptr
[16] = exec
->vtx
.attrptr
[0];
204 exec
->vtx
.attrsz
[0] = 0;
211 /* Make all active attributes (including edgeflag) available as
214 for (attr
= 0; attr
< VERT_ATTRIB_MAX
; attr
++) {
215 const GLuint src
= map
[attr
];
217 if (exec
->vtx
.attrsz
[src
]) {
218 GLsizeiptr offset
= (GLbyte
*)exec
->vtx
.attrptr
[src
] -
219 (GLbyte
*)exec
->vtx
.vertex
;
221 /* override the default array set above */
222 ASSERT(attr
< Elements(exec
->vtx
.inputs
));
223 ASSERT(attr
< Elements(exec
->vtx
.arrays
)); /* arrays[] */
224 exec
->vtx
.inputs
[attr
] = &arrays
[attr
];
226 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
227 /* a real buffer obj: Ptr is an offset, not a pointer*/
228 assert(exec
->vtx
.bufferobj
->Pointer
); /* buf should be mapped */
230 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.bufferobj
->Offset
+ offset
;
233 /* Ptr into ordinary app memory */
234 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.buffer_map
+ offset
;
236 arrays
[attr
].Size
= exec
->vtx
.attrsz
[src
];
237 arrays
[attr
].StrideB
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
238 arrays
[attr
].Stride
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
239 arrays
[attr
].Type
= GL_FLOAT
;
240 arrays
[attr
].Format
= GL_RGBA
;
241 arrays
[attr
].Enabled
= 1;
242 arrays
[attr
]._ElementSize
= arrays
[attr
].Size
* sizeof(GLfloat
);
243 _mesa_reference_buffer_object(ctx
,
244 &arrays
[attr
].BufferObj
,
245 exec
->vtx
.bufferobj
);
246 arrays
[attr
]._MaxElement
= count
; /* ??? */
248 varying_inputs
|= 1 << attr
;
249 ctx
->NewState
|= _NEW_ARRAY
;
253 _mesa_set_varying_vp_inputs( ctx
, varying_inputs
);
258 * Unmap the VBO. This is called before drawing.
261 vbo_exec_vtx_unmap( struct vbo_exec_context
*exec
)
263 GLenum target
= GL_ARRAY_BUFFER_ARB
;
265 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
266 struct gl_context
*ctx
= exec
->ctx
;
268 if (ctx
->Driver
.FlushMappedBufferRange
) {
269 GLintptr offset
= exec
->vtx
.buffer_used
- exec
->vtx
.bufferobj
->Offset
;
270 GLsizeiptr length
= (exec
->vtx
.buffer_ptr
- exec
->vtx
.buffer_map
) * sizeof(float);
273 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
,
275 exec
->vtx
.bufferobj
);
278 exec
->vtx
.buffer_used
+= (exec
->vtx
.buffer_ptr
-
279 exec
->vtx
.buffer_map
) * sizeof(float);
281 assert(exec
->vtx
.buffer_used
<= VBO_VERT_BUFFER_SIZE
);
282 assert(exec
->vtx
.buffer_ptr
!= NULL
);
284 ctx
->Driver
.UnmapBuffer(ctx
, exec
->vtx
.bufferobj
);
285 exec
->vtx
.buffer_map
= NULL
;
286 exec
->vtx
.buffer_ptr
= NULL
;
287 exec
->vtx
.max_vert
= 0;
293 * Map the vertex buffer to begin storing glVertex, glColor, etc data.
296 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
298 struct gl_context
*ctx
= exec
->ctx
;
299 const GLenum target
= GL_ARRAY_BUFFER_ARB
;
300 const GLenum access
= GL_READ_WRITE_ARB
; /* for MapBuffer */
301 const GLenum accessRange
= GL_MAP_WRITE_BIT
| /* for MapBufferRange */
302 GL_MAP_INVALIDATE_RANGE_BIT
|
303 GL_MAP_UNSYNCHRONIZED_BIT
|
304 GL_MAP_FLUSH_EXPLICIT_BIT
|
306 const GLenum usage
= GL_STREAM_DRAW_ARB
;
308 if (!_mesa_is_bufferobj(exec
->vtx
.bufferobj
))
311 assert(!exec
->vtx
.buffer_map
);
312 assert(!exec
->vtx
.buffer_ptr
);
314 if (VBO_VERT_BUFFER_SIZE
> exec
->vtx
.buffer_used
+ 1024 &&
315 ctx
->Driver
.MapBufferRange
) {
316 /* The VBO exists and there's room for more */
317 exec
->vtx
.buffer_map
=
318 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
319 exec
->vtx
.buffer_used
,
320 (VBO_VERT_BUFFER_SIZE
-
321 exec
->vtx
.buffer_used
),
323 exec
->vtx
.bufferobj
);
324 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
327 if (!exec
->vtx
.buffer_map
) {
328 /* Need to allocate a new VBO */
329 exec
->vtx
.buffer_used
= 0;
331 ctx
->Driver
.BufferData(ctx
, target
,
332 VBO_VERT_BUFFER_SIZE
,
333 NULL
, usage
, exec
->vtx
.bufferobj
);
336 if (ctx
->Driver
.MapBufferRange
)
337 exec
->vtx
.buffer_map
=
338 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
339 0, VBO_VERT_BUFFER_SIZE
,
341 exec
->vtx
.bufferobj
);
342 if (!exec
->vtx
.buffer_map
)
343 exec
->vtx
.buffer_map
=
344 (GLfloat
*)ctx
->Driver
.MapBuffer(ctx
, access
, exec
->vtx
.bufferobj
);
345 assert(exec
->vtx
.buffer_map
);
346 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
350 printf("map %d..\n", exec
->vtx
.buffer_used
);
356 * Execute the buffer and save copied verts.
357 * \param keep_unmapped if true, leave the VBO unmapped when we're done.
360 vbo_exec_vtx_flush(struct vbo_exec_context
*exec
, GLboolean keepUnmapped
)
363 vbo_exec_debug_verts( exec
);
365 if (exec
->vtx
.prim_count
&&
366 exec
->vtx
.vert_count
) {
368 exec
->vtx
.copied
.nr
= vbo_copy_vertices( exec
);
370 if (exec
->vtx
.copied
.nr
!= exec
->vtx
.vert_count
) {
371 struct gl_context
*ctx
= exec
->ctx
;
373 /* Before the update_state() as this may raise _NEW_ARRAY
374 * from _mesa_set_varying_vp_inputs().
376 vbo_exec_bind_arrays( ctx
);
379 _mesa_update_state( ctx
);
381 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
382 vbo_exec_vtx_unmap( exec
);
386 printf("%s %d %d\n", __FUNCTION__
, exec
->vtx
.prim_count
,
387 exec
->vtx
.vert_count
);
389 vbo_context(ctx
)->draw_prims( ctx
,
392 exec
->vtx
.prim_count
,
396 exec
->vtx
.vert_count
- 1);
398 /* If using a real VBO, get new storage -- unless asked not to.
400 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
) && !keepUnmapped
) {
401 vbo_exec_vtx_map( exec
);
406 /* May have to unmap explicitly if we didn't draw:
409 _mesa_is_bufferobj(exec
->vtx
.bufferobj
) &&
410 exec
->vtx
.buffer_map
) {
411 vbo_exec_vtx_unmap( exec
);
414 if (keepUnmapped
|| exec
->vtx
.vertex_size
== 0)
415 exec
->vtx
.max_vert
= 0;
417 exec
->vtx
.max_vert
= ((VBO_VERT_BUFFER_SIZE
- exec
->vtx
.buffer_used
) /
418 (exec
->vtx
.vertex_size
* sizeof(GLfloat
)));
420 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
421 exec
->vtx
.prim_count
= 0;
422 exec
->vtx
.vert_count
= 0;
426 #endif /* FEATURE_beginend */