2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
25 * Keith Whitwell <keithw@vmware.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/state.h"
34 #include "main/vtxfmt.h"
36 #include "vbo_context.h"
41 vbo_exec_debug_verts( struct vbo_exec_context
*exec
)
43 GLuint count
= exec
->vtx
.vert_count
;
46 printf("%s: %u vertices %d primitives, %d vertsize\n",
50 exec
->vtx
.vertex_size
);
52 for (i
= 0 ; i
< exec
->vtx
.prim_count
; i
++) {
53 struct _mesa_prim
*prim
= &exec
->vtx
.prim
[i
];
54 printf(" prim %d: %s%s %d..%d %s %s\n",
56 _mesa_lookup_prim_by_nr(prim
->mode
),
57 prim
->weak
? " (weak)" : "",
59 prim
->start
+ prim
->count
,
60 prim
->begin
? "BEGIN" : "(wrap)",
61 prim
->end
? "END" : "(wrap)");
67 * NOTE: Need to have calculated primitives by this point -- do it on the fly.
68 * NOTE: Old 'parity' issue is gone.
71 vbo_copy_vertices( struct vbo_exec_context
*exec
)
73 GLuint nr
= exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
;
75 GLuint sz
= exec
->vtx
.vertex_size
;
76 GLfloat
*dst
= exec
->vtx
.copied
.buffer
;
77 const GLfloat
*src
= (exec
->vtx
.buffer_map
+
78 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].start
*
79 exec
->vtx
.vertex_size
);
82 switch (exec
->ctx
->Driver
.CurrentExecPrimitive
) {
87 for (i
= 0 ; i
< ovf
; i
++)
88 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
92 for (i
= 0 ; i
< ovf
; i
++)
93 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
97 for (i
= 0 ; i
< ovf
; i
++)
98 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
105 memcpy( dst
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
109 case GL_TRIANGLE_FAN
:
115 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
119 memcpy( dst
, src
+0, sz
* sizeof(GLfloat
) );
120 memcpy( dst
+sz
, src
+(nr
-1)*sz
, sz
* sizeof(GLfloat
) );
123 case GL_TRIANGLE_STRIP
:
124 /* no parity issue, but need to make sure the tri is not drawn twice */
126 exec
->vtx
.prim
[exec
->vtx
.prim_count
-1].count
--;
141 for (i
= 0 ; i
< ovf
; i
++)
142 memcpy( dst
+i
*sz
, src
+(nr
-ovf
+i
)*sz
, sz
* sizeof(GLfloat
) );
144 case PRIM_OUTSIDE_BEGIN_END
:
154 /* TODO: populate these as the vertex is defined:
157 vbo_exec_bind_arrays( struct gl_context
*ctx
)
159 struct vbo_context
*vbo
= vbo_context(ctx
);
160 struct vbo_exec_context
*exec
= &vbo
->exec
;
161 struct gl_client_array
*arrays
= exec
->vtx
.arrays
;
162 const GLuint count
= exec
->vtx
.vert_count
;
165 GLbitfield64 varying_inputs
= 0x0;
167 /* Install the default (ie Current) attributes first, then overlay
170 switch (get_program_mode(exec
->ctx
)) {
172 for (attr
= 0; attr
< VERT_ATTRIB_FF_MAX
; attr
++) {
173 exec
->vtx
.inputs
[attr
] = &vbo
->currval
[VBO_ATTRIB_POS
+attr
];
175 for (attr
= 0; attr
< MAT_ATTRIB_MAX
; attr
++) {
176 ASSERT(VERT_ATTRIB_GENERIC(attr
) < Elements(exec
->vtx
.inputs
));
177 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC(attr
)] =
178 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+attr
];
180 map
= vbo
->map_vp_none
;
183 for (attr
= 0; attr
< VERT_ATTRIB_FF_MAX
; attr
++) {
184 exec
->vtx
.inputs
[attr
] = &vbo
->currval
[VBO_ATTRIB_POS
+attr
];
186 for (attr
= 0; attr
< VERT_ATTRIB_GENERIC_MAX
; attr
++) {
187 ASSERT(VERT_ATTRIB_GENERIC(attr
) < Elements(exec
->vtx
.inputs
));
188 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC(attr
)] =
189 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+attr
];
191 map
= vbo
->map_vp_arb
;
193 /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
194 * In that case we effectively need to route the data from
195 * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
197 if ((ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_POS
) == 0 &&
198 (ctx
->VertexProgram
._Current
->Base
.InputsRead
& VERT_BIT_GENERIC0
)) {
199 exec
->vtx
.inputs
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.inputs
[0];
200 exec
->vtx
.attrsz
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.attrsz
[0];
201 exec
->vtx
.attrptr
[VERT_ATTRIB_GENERIC0
] = exec
->vtx
.attrptr
[0];
202 exec
->vtx
.attrsz
[0] = 0;
209 for (attr
= 0; attr
< VERT_ATTRIB_MAX
; attr
++) {
210 const GLuint src
= map
[attr
];
212 if (exec
->vtx
.attrsz
[src
]) {
213 GLsizeiptr offset
= (GLbyte
*)exec
->vtx
.attrptr
[src
] -
214 (GLbyte
*)exec
->vtx
.vertex
;
216 /* override the default array set above */
217 ASSERT(attr
< Elements(exec
->vtx
.inputs
));
218 ASSERT(attr
< Elements(exec
->vtx
.arrays
)); /* arrays[] */
219 exec
->vtx
.inputs
[attr
] = &arrays
[attr
];
221 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
222 /* a real buffer obj: Ptr is an offset, not a pointer*/
223 assert(exec
->vtx
.bufferobj
->Pointer
); /* buf should be mapped */
225 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.bufferobj
->Offset
+ offset
;
228 /* Ptr into ordinary app memory */
229 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.buffer_map
+ offset
;
231 arrays
[attr
].Size
= exec
->vtx
.attrsz
[src
];
232 arrays
[attr
].StrideB
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
233 arrays
[attr
].Stride
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
234 arrays
[attr
].Type
= exec
->vtx
.attrtype
[src
];
235 arrays
[attr
].Integer
=
236 vbo_attrtype_to_integer_flag(exec
->vtx
.attrtype
[src
]);
237 arrays
[attr
].Format
= GL_RGBA
;
238 arrays
[attr
].Enabled
= 1;
239 arrays
[attr
]._ElementSize
= arrays
[attr
].Size
* sizeof(GLfloat
);
240 _mesa_reference_buffer_object(ctx
,
241 &arrays
[attr
].BufferObj
,
242 exec
->vtx
.bufferobj
);
243 arrays
[attr
]._MaxElement
= count
; /* ??? */
245 varying_inputs
|= VERT_BIT(attr
);
249 _mesa_set_varying_vp_inputs( ctx
, varying_inputs
);
250 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewArray
;
255 * Unmap the VBO. This is called before drawing.
258 vbo_exec_vtx_unmap( struct vbo_exec_context
*exec
)
260 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
261 struct gl_context
*ctx
= exec
->ctx
;
263 if (ctx
->Driver
.FlushMappedBufferRange
) {
264 GLintptr offset
= exec
->vtx
.buffer_used
- exec
->vtx
.bufferobj
->Offset
;
265 GLsizeiptr length
= (exec
->vtx
.buffer_ptr
- exec
->vtx
.buffer_map
) * sizeof(float);
268 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
,
269 exec
->vtx
.bufferobj
);
272 exec
->vtx
.buffer_used
+= (exec
->vtx
.buffer_ptr
-
273 exec
->vtx
.buffer_map
) * sizeof(float);
275 assert(exec
->vtx
.buffer_used
<= VBO_VERT_BUFFER_SIZE
);
276 assert(exec
->vtx
.buffer_ptr
!= NULL
);
278 ctx
->Driver
.UnmapBuffer(ctx
, exec
->vtx
.bufferobj
);
279 exec
->vtx
.buffer_map
= NULL
;
280 exec
->vtx
.buffer_ptr
= NULL
;
281 exec
->vtx
.max_vert
= 0;
287 * Map the vertex buffer to begin storing glVertex, glColor, etc data.
290 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
292 struct gl_context
*ctx
= exec
->ctx
;
293 const GLenum accessRange
= GL_MAP_WRITE_BIT
| /* for MapBufferRange */
294 GL_MAP_INVALIDATE_RANGE_BIT
|
295 GL_MAP_UNSYNCHRONIZED_BIT
|
296 GL_MAP_FLUSH_EXPLICIT_BIT
|
298 const GLenum usage
= GL_STREAM_DRAW_ARB
;
300 if (!_mesa_is_bufferobj(exec
->vtx
.bufferobj
))
303 assert(!exec
->vtx
.buffer_map
);
304 assert(!exec
->vtx
.buffer_ptr
);
306 if (VBO_VERT_BUFFER_SIZE
> exec
->vtx
.buffer_used
+ 1024) {
307 /* The VBO exists and there's room for more */
308 if (exec
->vtx
.bufferobj
->Size
> 0) {
309 exec
->vtx
.buffer_map
=
310 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
311 exec
->vtx
.buffer_used
,
312 (VBO_VERT_BUFFER_SIZE
-
313 exec
->vtx
.buffer_used
),
315 exec
->vtx
.bufferobj
);
316 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
319 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
= NULL
;
323 if (!exec
->vtx
.buffer_map
) {
324 /* Need to allocate a new VBO */
325 exec
->vtx
.buffer_used
= 0;
327 if (ctx
->Driver
.BufferData(ctx
, GL_ARRAY_BUFFER_ARB
,
328 VBO_VERT_BUFFER_SIZE
,
329 NULL
, usage
, exec
->vtx
.bufferobj
)) {
330 /* buffer allocation worked, now map the buffer */
331 exec
->vtx
.buffer_map
=
332 (GLfloat
*)ctx
->Driver
.MapBufferRange(ctx
,
333 0, VBO_VERT_BUFFER_SIZE
,
335 exec
->vtx
.bufferobj
);
338 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "VBO allocation");
339 exec
->vtx
.buffer_map
= NULL
;
343 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
345 if (!exec
->vtx
.buffer_map
) {
347 _mesa_install_exec_vtxfmt( ctx
, &exec
->vtxfmt_noop
);
350 if (_mesa_using_noop_vtxfmt(ctx
->Exec
)) {
351 /* The no-op functions are installed so switch back to regular
352 * functions. We do this test just to avoid frequent and needless
353 * calls to _mesa_install_exec_vtxfmt().
355 _mesa_install_exec_vtxfmt(ctx
, &exec
->vtxfmt
);
360 printf("map %d..\n", exec
->vtx
.buffer_used
);
366 * Execute the buffer and save copied verts.
367 * \param keep_unmapped if true, leave the VBO unmapped when we're done.
370 vbo_exec_vtx_flush(struct vbo_exec_context
*exec
, GLboolean keepUnmapped
)
373 vbo_exec_debug_verts( exec
);
375 if (exec
->vtx
.prim_count
&&
376 exec
->vtx
.vert_count
) {
378 exec
->vtx
.copied
.nr
= vbo_copy_vertices( exec
);
380 if (exec
->vtx
.copied
.nr
!= exec
->vtx
.vert_count
) {
381 struct gl_context
*ctx
= exec
->ctx
;
383 /* Before the update_state() as this may raise _NEW_VARYING_VP_INPUTS
384 * from _mesa_set_varying_vp_inputs().
386 vbo_exec_bind_arrays( ctx
);
389 _mesa_update_state( ctx
);
391 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
392 vbo_exec_vtx_unmap( exec
);
396 printf("%s %d %d\n", __FUNCTION__
, exec
->vtx
.prim_count
,
397 exec
->vtx
.vert_count
);
399 vbo_context(ctx
)->draw_prims( ctx
,
401 exec
->vtx
.prim_count
,
405 exec
->vtx
.vert_count
- 1,
408 /* If using a real VBO, get new storage -- unless asked not to.
410 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
) && !keepUnmapped
) {
411 vbo_exec_vtx_map( exec
);
416 /* May have to unmap explicitly if we didn't draw:
419 _mesa_is_bufferobj(exec
->vtx
.bufferobj
) &&
420 exec
->vtx
.buffer_map
) {
421 vbo_exec_vtx_unmap( exec
);
424 if (keepUnmapped
|| exec
->vtx
.vertex_size
== 0)
425 exec
->vtx
.max_vert
= 0;
427 exec
->vtx
.max_vert
= ((VBO_VERT_BUFFER_SIZE
- exec
->vtx
.buffer_used
) /
428 (exec
->vtx
.vertex_size
* sizeof(GLfloat
)));
430 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
431 exec
->vtx
.prim_count
= 0;
432 exec
->vtx
.vert_count
= 0;