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/context.h"
32 #include "main/enums.h"
33 #include "main/mfeatures.h"
34 #include "main/state.h"
35 #include "main/vtxfmt.h"
37 #include "vbo_context.h"
45 vbo_exec_debug_verts( struct vbo_exec_context
*exec
)
47 GLuint count
= exec
->vtx
.vert_count
;
50 printf("%s: %u vertices %d primitives, %d vertsize\n",
54 exec
->vtx
.vertex_size
);
56 for (i
= 0 ; i
< exec
->vtx
.prim_count
; i
++) {
57 struct _mesa_prim
*prim
= &exec
->vtx
.prim
[i
];
58 printf(" prim %d: %s%s %d..%d %s %s\n",
60 _mesa_lookup_prim_by_nr(prim
->mode
),
61 prim
->weak
? " (weak)" : "",
63 prim
->start
+ prim
->count
,
64 prim
->begin
? "BEGIN" : "(wrap)",
65 prim
->end
? "END" : "(wrap)");
71 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
72 * NOTE: Old 'parity' issue is gone.
75 vbo_copy_vertices( struct vbo_exec_context
*exec
)
77 GLuint nr
= exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
;
79 GLuint sz
= exec
->vtx
.vertex_size
;
80 GLfloat
*dst
= exec
->vtx
.copied
.buffer
;
81 const GLfloat
*src
= (exec
->vtx
.buffer_map
+
82 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].start
*
83 exec
->vtx
.vertex_size
);
86 switch (exec
->ctx
->Driver
.CurrentExecPrimitive
) {
91 for (i
= 0 ; i
< ovf
; i
++)
92 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
96 for (i
= 0 ; i
< ovf
; i
++)
97 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
101 for (i
= 0 ; i
< ovf
; i
++)
102 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
109 memcpy( dst
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
113 case GL_TRIANGLE_FAN
:
119 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
123 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
124 memcpy( dst
+sz
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
127 case GL_TRIANGLE_STRIP
:
128 /* no parity issue, but need to make sure the tri is not drawn twice */
130 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
--;
145 for (i
= 0 ; i
< ovf
; i
++)
146 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
148 case PRIM_OUTSIDE_BEGIN_END
:
158 /* TODO: populate these as the vertex is defined:
161 vbo_exec_bind_arrays( struct gl_context
*ctx
)
163 struct vbo_context
*vbo
= vbo_context(ctx
);
164 struct vbo_exec_context
*exec
= &vbo
->exec
;
165 struct gl_client_array
*arrays
= exec
->vtx
.arrays
;
166 const GLuint count
= exec
->vtx
.vert_count
;
169 GLbitfield varying_inputs
= 0x0;
171 /* Install the default (ie Current) attributes first, then overlay
174 switch (get_program_mode(exec
->ctx
)) {
176 for (attr
= 0; attr
< VERT_ATTRIB_FF_MAX
; attr
++) {
177 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
179 for (attr
= 0; attr
< MAT_ATTRIB_MAX
; attr
++) {
180 ASSERT(VERT_ATTRIB_GENERIC(attr
) < Elements(exec
->vtx
.inputs
));
181 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC(attr
)] = &vbo
->mat_currval
[attr
];
183 map
= vbo
->map_vp_none
;
187 /* The aliasing of attributes for NV vertex programs has already
188 * occurred. NV vertex programs cannot access material values,
189 * nor attributes greater than VERT_ATTRIB_TEX7.
191 for (attr
= 0; attr
< VERT_ATTRIB_FF_MAX
; attr
++) {
192 exec
->vtx
.inputs
[attr
] = &vbo
->legacy_currval
[attr
];
194 for (attr
= 0; attr
< VERT_ATTRIB_GENERIC_MAX
; attr
++) {
195 ASSERT(VERT_ATTRIB_GENERIC(attr
) < Elements(exec
->vtx
.inputs
));
196 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC(attr
)] = &vbo
->generic_currval
[attr
];
198 map
= vbo
->map_vp_arb
;
200 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
201 * In that case we effectively need to route the data from
202 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
204 if ((ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_POS
) == 0 &&
205 (ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_GENERIC0
)) {
206 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.inputs
[0];
207 exec
->vtx
.attrsz
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.attrsz
[0];
208 exec
->vtx
.attrptr
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.attrptr
[0];
209 exec
->vtx
.attrsz
[0] = 0;
216 /* Make all active attributes (including edgeflag) available as
219 for (attr
= 0; attr
< VERT_ATTRIB_MAX
; attr
++) {
220 const GLuint src
= map
[attr
];
222 if (exec
->vtx
.attrsz
[src
]) {
223 GLsizeiptr offset
= (GLbyte
*)exec
->vtx
.attrptr
[src
] -
224 (GLbyte
*)exec
->vtx
.vertex
;
226 /* override the default array set above */
227 ASSERT(attr
< Elements(exec
->vtx
.inputs
));
228 ASSERT(attr
< Elements(exec
->vtx
.arrays
)); /* arrays[] */
229 exec
->vtx
.inputs
[attr
] = &arrays
[attr
];
231 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
232 /* a real buffer obj: Ptr is an offset, not a pointer*/
233 assert(exec
->vtx
.bufferobj
->Pointer
); /* buf should be mapped */
235 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.bufferobj
->Offset
+ offset
;
238 /* Ptr into ordinary app memory */
239 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.buffer_map
+ offset
;
241 arrays
[attr
].Size
= exec
->vtx
.attrsz
[src
];
242 arrays
[attr
].StrideB
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
243 arrays
[attr
].Stride
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
244 arrays
[attr
].Type
= GL_FLOAT
;
245 arrays
[attr
].Format
= GL_RGBA
;
246 arrays
[attr
].Enabled
= 1;
247 arrays
[attr
]._ElementSize
= arrays
[attr
].Size
* sizeof(GLfloat
);
248 _mesa_reference_buffer_object(ctx
,
249 &arrays
[attr
].BufferObj
,
250 exec
->vtx
.bufferobj
);
251 arrays
[attr
]._MaxElement
= count
; /* ??? */
253 varying_inputs
|= VERT_BIT(attr
);
254 ctx
->NewState
|= _NEW_ARRAY
;
258 _mesa_set_varying_vp_inputs( ctx
, varying_inputs
);
263 * Unmap the VBO. This is called before drawing.
266 vbo_exec_vtx_unmap( struct vbo_exec_context
*exec
)
268 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
269 struct gl_context
*ctx
= exec
->ctx
;
271 if (ctx
->Driver
.FlushMappedBufferRange
) {
272 GLintptr offset
= exec
->vtx
.buffer_used
- exec
->vtx
.bufferobj
->Offset
;
273 GLsizeiptr length
= (exec
->vtx
.buffer_ptr
- exec
->vtx
.buffer_map
) * sizeof(float);
276 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
,
277 exec
->vtx
.bufferobj
);
280 exec
->vtx
.buffer_used
+= (exec
->vtx
.buffer_ptr
-
281 exec
->vtx
.buffer_map
) * sizeof(float);
283 assert(exec
->vtx
.buffer_used
<= VBO_VERT_BUFFER_SIZE
);
284 assert(exec
->vtx
.buffer_ptr
!= NULL
);
286 ctx
->Driver
.UnmapBuffer(ctx
, exec
->vtx
.bufferobj
);
287 exec
->vtx
.buffer_map
= NULL
;
288 exec
->vtx
.buffer_ptr
= NULL
;
289 exec
->vtx
.max_vert
= 0;
295 * Map the vertex buffer to begin storing glVertex, glColor, etc data.
298 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
300 struct gl_context
*ctx
= exec
->ctx
;
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 /* The VBO exists and there's room for more */
316 if (exec
->vtx
.bufferobj
->Size
> 0) {
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 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
= NULL
;
331 if (!exec
->vtx
.buffer_map
) {
332 /* Need to allocate a new VBO */
333 exec
->vtx
.buffer_used
= 0;
335 if (ctx
->Driver
.BufferData(ctx
, GL_ARRAY_BUFFER_ARB
,
336 VBO_VERT_BUFFER_SIZE
,
337 NULL
, usage
, exec
->vtx
.bufferobj
)) {
338 /* buffer allocation worked, now map the buffer */
339 exec
->vtx
.buffer_map
=
340 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
341 0, VBO_VERT_BUFFER_SIZE
,
343 exec
->vtx
.bufferobj
);
346 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "VBO allocation");
347 exec
->vtx
.buffer_map
= NULL
;
351 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
353 if (!exec
->vtx
.buffer_map
) {
355 _mesa_install_exec_vtxfmt( ctx
, &exec
->vtxfmt_noop
);
358 if (_mesa_using_noop_vtxfmt(ctx
->Exec
)) {
359 /* The no-op functions are installed so switch back to regular
360 * functions. We do this test just to avoid frequent and needless
361 * calls to _mesa_install_exec_vtxfmt().
363 _mesa_install_exec_vtxfmt(ctx
, &exec
->vtxfmt
);
368 printf("map %d..\n", exec
->vtx
.buffer_used
);
374 * Execute the buffer and save copied verts.
375 * \param keep_unmapped if true, leave the VBO unmapped when we're done.
378 vbo_exec_vtx_flush(struct vbo_exec_context
*exec
, GLboolean keepUnmapped
)
381 vbo_exec_debug_verts( exec
);
383 if (exec
->vtx
.prim_count
&&
384 exec
->vtx
.vert_count
) {
386 exec
->vtx
.copied
.nr
= vbo_copy_vertices( exec
);
388 if (exec
->vtx
.copied
.nr
!= exec
->vtx
.vert_count
) {
389 struct gl_context
*ctx
= exec
->ctx
;
391 /* Before the update_state() as this may raise _NEW_ARRAY
392 * from _mesa_set_varying_vp_inputs().
394 vbo_exec_bind_arrays( ctx
);
397 _mesa_update_state( ctx
);
399 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
400 vbo_exec_vtx_unmap( exec
);
404 printf("%s %d %d\n", __FUNCTION__
, exec
->vtx
.prim_count
,
405 exec
->vtx
.vert_count
);
407 vbo_context(ctx
)->draw_prims( ctx
,
410 exec
->vtx
.prim_count
,
414 exec
->vtx
.vert_count
- 1);
416 /* If using a real VBO, get new storage -- unless asked not to.
418 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
) && !keepUnmapped
) {
419 vbo_exec_vtx_map( exec
);
424 /* May have to unmap explicitly if we didn't draw:
427 _mesa_is_bufferobj(exec
->vtx
.bufferobj
) &&
428 exec
->vtx
.buffer_map
) {
429 vbo_exec_vtx_unmap( exec
);
432 if (keepUnmapped
|| exec
->vtx
.vertex_size
== 0)
433 exec
->vtx
.max_vert
= 0;
435 exec
->vtx
.max_vert
= ((VBO_VERT_BUFFER_SIZE
- exec
->vtx
.buffer_used
) /
436 (exec
->vtx
.vertex_size
* sizeof(GLfloat
)));
438 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
439 exec
->vtx
.prim_count
= 0;
440 exec
->vtx
.vert_count
= 0;
444 #endif /* FEATURE_beginend */