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/context.h"
31 #include "main/enums.h"
32 #include "main/state.h"
33 #include "main/macros.h"
35 #include "vbo_context.h"
42 vbo_exec_debug_verts( struct vbo_exec_context
*exec
)
44 GLuint count
= exec
->vtx
.vert_count
;
47 _mesa_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 _mesa_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 _mesa_memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
93 for (i
= 0 ; i
< ovf
; i
++)
94 _mesa_memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
98 for (i
= 0 ; i
< ovf
; i
++)
99 _mesa_memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
106 _mesa_memcpy( dst
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
110 case GL_TRIANGLE_FAN
:
116 _mesa_memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
120 _mesa_memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
121 _mesa_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 _mesa_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( GLcontext
*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
;
164 const GLubyte
*data
= (GLubyte
*) exec
->vtx
.buffer_map
;
167 GLbitfield varying_inputs
= 0x0;
169 /* Install the default (ie Current) attributes first, then overlay
172 switch (get_program_mode(exec
->ctx
)) {
174 for (attr
= 0; attr
< 16; attr
++) {
175 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
177 for (attr
= 0; attr
< MAT_ATTRIB_MAX
; attr
++) {
178 ASSERT(attr
+ 16 < Elements(exec
->vtx
.inputs
));
179 exec
->vtx
.inputs
[attr
+ 16] = &vbo
->mat_currval
[attr
];
181 map
= vbo
->map_vp_none
;
185 /* The aliasing of attributes for NV vertex programs has already
186 * occurred. NV vertex programs cannot access material values,
187 * nor attributes greater than VERT_ATTRIB_TEX7.
189 for (attr
= 0; attr
< 16; attr
++) {
190 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
191 ASSERT(attr
+ 16 < Elements(exec
->vtx
.inputs
));
192 exec
->vtx
.inputs
[attr
+ 16] = &vbo
->generic_currval
[attr
];
194 map
= vbo
->map_vp_arb
;
196 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
197 * In that case we effectively need to route the data from
198 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
200 if ((ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_POS
) == 0 &&
201 (ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_GENERIC0
)) {
202 exec
->vtx
.inputs
[16] = exec
->vtx
.inputs
[0];
203 exec
->vtx
.attrsz
[16] = exec
->vtx
.attrsz
[0];
204 exec
->vtx
.attrptr
[16] = exec
->vtx
.attrptr
[0];
205 exec
->vtx
.attrsz
[0] = 0;
212 /* Make all active attributes (including edgeflag) available as
215 for (attr
= 0; attr
< VERT_ATTRIB_MAX
; attr
++) {
216 const GLuint src
= map
[attr
];
218 if (exec
->vtx
.attrsz
[src
]) {
219 /* override the default array set above */
220 ASSERT(attr
< Elements(exec
->vtx
.inputs
));
221 ASSERT(attr
< Elements(exec
->vtx
.arrays
)); /* arrays[] */
222 exec
->vtx
.inputs
[attr
] = &arrays
[attr
];
224 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
225 /* a real buffer obj: Ptr is an offset, not a pointer*/
227 assert(exec
->vtx
.bufferobj
->Pointer
); /* buf should be mapped */
228 offset
= (GLbyte
*) data
-
229 (GLbyte
*) exec
->vtx
.bufferobj
->Pointer
+
230 exec
->vtx
.bufferobj
->Offset
;
232 arrays
[attr
].Ptr
= (void *) offset
;
235 /* Ptr into ordinary app memory */
236 arrays
[attr
].Ptr
= (void *) data
;
238 arrays
[attr
].Size
= exec
->vtx
.attrsz
[src
];
239 arrays
[attr
].StrideB
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
240 arrays
[attr
].Stride
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
241 arrays
[attr
].Type
= GL_FLOAT
;
242 arrays
[attr
].Format
= GL_RGBA
;
243 arrays
[attr
].Enabled
= 1;
244 _mesa_reference_buffer_object(ctx
,
245 &arrays
[attr
].BufferObj
,
246 exec
->vtx
.bufferobj
);
247 arrays
[attr
]._MaxElement
= count
; /* ??? */
249 data
+= exec
->vtx
.attrsz
[src
] * sizeof(GLfloat
);
250 varying_inputs
|= 1 << attr
;
254 _mesa_set_varying_vp_inputs( ctx
, varying_inputs
);
259 vbo_exec_vtx_unmap( struct vbo_exec_context
*exec
)
261 GLenum target
= GL_ARRAY_BUFFER_ARB
;
263 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
264 GLcontext
*ctx
= exec
->ctx
;
266 if (ctx
->Driver
.FlushMappedBufferRange
) {
267 GLintptr offset
= exec
->vtx
.buffer_used
- exec
->vtx
.bufferobj
->Offset
;
268 GLsizeiptr length
= (exec
->vtx
.buffer_ptr
- exec
->vtx
.buffer_map
) * sizeof(float);
271 ctx
->Driver
.FlushMappedBufferRange(ctx
, target
,
273 exec
->vtx
.bufferobj
);
276 exec
->vtx
.buffer_used
+= (exec
->vtx
.buffer_ptr
-
277 exec
->vtx
.buffer_map
) * sizeof(float);
279 assert(exec
->vtx
.buffer_used
<= VBO_VERT_BUFFER_SIZE
);
280 assert(exec
->vtx
.buffer_ptr
!= NULL
);
282 ctx
->Driver
.UnmapBuffer(ctx
, target
, exec
->vtx
.bufferobj
);
283 exec
->vtx
.buffer_map
= NULL
;
284 exec
->vtx
.buffer_ptr
= NULL
;
285 exec
->vtx
.max_vert
= 0;
291 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
293 GLcontext
*ctx
= exec
->ctx
;
294 const GLenum target
= GL_ARRAY_BUFFER_ARB
;
295 const GLenum access
= GL_READ_WRITE_ARB
; /* for MapBuffer */
296 const GLenum accessRange
= GL_MAP_WRITE_BIT
| /* for MapBufferRange */
297 GL_MAP_INVALIDATE_RANGE_BIT
|
298 GL_MAP_UNSYNCHRONIZED_BIT
|
299 GL_MAP_FLUSH_EXPLICIT_BIT
|
301 const GLenum usage
= GL_STREAM_DRAW_ARB
;
303 if (!_mesa_is_bufferobj(exec
->vtx
.bufferobj
))
306 if (exec
->vtx
.buffer_map
!= NULL
) {
308 exec
->vtx
.buffer_map
= NULL
;
309 exec
->vtx
.buffer_ptr
= NULL
;
312 if (VBO_VERT_BUFFER_SIZE
> exec
->vtx
.buffer_used
+ 1024 &&
313 ctx
->Driver
.MapBufferRange
) {
314 exec
->vtx
.buffer_map
=
315 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
317 exec
->vtx
.buffer_used
,
318 (VBO_VERT_BUFFER_SIZE
-
319 exec
->vtx
.buffer_used
),
321 exec
->vtx
.bufferobj
);
322 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
325 if (!exec
->vtx
.buffer_map
) {
326 exec
->vtx
.buffer_used
= 0;
328 ctx
->Driver
.BufferData(ctx
, target
,
329 VBO_VERT_BUFFER_SIZE
,
330 NULL
, usage
, exec
->vtx
.bufferobj
);
333 if (ctx
->Driver
.MapBufferRange
)
334 exec
->vtx
.buffer_map
=
335 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
, target
,
336 0, VBO_VERT_BUFFER_SIZE
,
338 exec
->vtx
.bufferobj
);
339 if (!exec
->vtx
.buffer_map
)
340 exec
->vtx
.buffer_map
=
341 (GLfloat
*)ctx
->Driver
.MapBuffer(ctx
, target
, access
, exec
->vtx
.bufferobj
);
342 assert(exec
->vtx
.buffer_map
);
343 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
347 _mesa_printf("map %d..\n", exec
->vtx
.buffer_used
);
353 * Execute the buffer and save copied verts.
356 vbo_exec_vtx_flush( struct vbo_exec_context
*exec
, GLboolean unmap
)
359 vbo_exec_debug_verts( exec
);
361 if (exec
->vtx
.prim_count
&&
362 exec
->vtx
.vert_count
) {
364 exec
->vtx
.copied
.nr
= vbo_copy_vertices( exec
);
366 if (exec
->vtx
.copied
.nr
!= exec
->vtx
.vert_count
) {
367 GLcontext
*ctx
= exec
->ctx
;
369 /* Before the update_state() as this may raise _NEW_ARRAY
370 * from _mesa_set_varying_vp_inputs().
372 vbo_exec_bind_arrays( ctx
);
375 _mesa_update_state( ctx
);
377 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
378 vbo_exec_vtx_unmap( exec
);
382 _mesa_printf("%s %d %d\n", __FUNCTION__
, exec
->vtx
.prim_count
,
383 exec
->vtx
.vert_count
);
385 vbo_context(ctx
)->draw_prims( ctx
,
388 exec
->vtx
.prim_count
,
392 exec
->vtx
.vert_count
- 1);
394 /* If using a real VBO, get new storage -- unless asked not to.
396 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
) && !unmap
) {
397 vbo_exec_vtx_map( exec
);
402 /* May have to unmap explicitly if we didn't draw:
405 _mesa_is_bufferobj(exec
->vtx
.bufferobj
) &&
406 exec
->vtx
.buffer_map
) {
407 vbo_exec_vtx_unmap( exec
);
411 if (unmap
|| exec
->vtx
.vertex_size
== 0)
412 exec
->vtx
.max_vert
= 0;
414 exec
->vtx
.max_vert
= ((VBO_VERT_BUFFER_SIZE
- exec
->vtx
.buffer_used
) /
415 (exec
->vtx
.vertex_size
* sizeof(GLfloat
)));
417 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
418 exec
->vtx
.prim_count
= 0;
419 exec
->vtx
.vert_count
= 0;
423 #endif /* FEATURE_beginend */