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>
29 #include "main/glheader.h"
30 #include "main/bufferobj.h"
31 #include "main/compiler.h"
32 #include "main/context.h"
33 #include "main/enums.h"
34 #include "main/state.h"
35 #include "main/vtxfmt.h"
37 #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 fi_type
*dst
= exec
->vtx
.copied
.buffer
;
78 const fi_type
*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
;
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
) < ARRAY_SIZE(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
) < ARRAY_SIZE(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
< ARRAY_SIZE(exec
->vtx
.inputs
));
218 assert(attr
< ARRAY_SIZE(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
->Mappings
[MAP_INTERNAL
].Pointer
);
225 arrays
[attr
].Ptr
= (GLubyte
*)
226 exec
->vtx
.bufferobj
->Mappings
[MAP_INTERNAL
].Offset
+ offset
;
229 /* Ptr into ordinary app memory */
230 arrays
[attr
].Ptr
= (GLubyte
*)exec
->vtx
.buffer_map
+ offset
;
232 arrays
[attr
].Size
= exec
->vtx
.attrsz
[src
];
233 arrays
[attr
].StrideB
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
234 arrays
[attr
].Stride
= exec
->vtx
.vertex_size
* sizeof(GLfloat
);
235 arrays
[attr
].Type
= exec
->vtx
.attrtype
[src
];
236 arrays
[attr
].Integer
=
237 vbo_attrtype_to_integer_flag(exec
->vtx
.attrtype
[src
]);
238 arrays
[attr
].Format
= GL_RGBA
;
239 arrays
[attr
].Enabled
= 1;
240 arrays
[attr
]._ElementSize
= arrays
[attr
].Size
* sizeof(GLfloat
);
241 _mesa_reference_buffer_object(ctx
,
242 &arrays
[attr
].BufferObj
,
243 exec
->vtx
.bufferobj
);
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
-
265 exec
->vtx
.bufferobj
->Mappings
[MAP_INTERNAL
].Offset
;
266 GLsizeiptr length
= (exec
->vtx
.buffer_ptr
- exec
->vtx
.buffer_map
) *
270 ctx
->Driver
.FlushMappedBufferRange(ctx
, offset
, length
,
275 exec
->vtx
.buffer_used
+= (exec
->vtx
.buffer_ptr
-
276 exec
->vtx
.buffer_map
) * sizeof(float);
278 assert(exec
->vtx
.buffer_used
<= VBO_VERT_BUFFER_SIZE
);
279 assert(exec
->vtx
.buffer_ptr
!= NULL
);
281 ctx
->Driver
.UnmapBuffer(ctx
, exec
->vtx
.bufferobj
, MAP_INTERNAL
);
282 exec
->vtx
.buffer_map
= NULL
;
283 exec
->vtx
.buffer_ptr
= NULL
;
284 exec
->vtx
.max_vert
= 0;
290 * Map the vertex buffer to begin storing glVertex, glColor, etc data.
293 vbo_exec_vtx_map( struct vbo_exec_context
*exec
)
295 struct gl_context
*ctx
= exec
->ctx
;
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 assert(!exec
->vtx
.buffer_map
);
307 assert(!exec
->vtx
.buffer_ptr
);
309 if (VBO_VERT_BUFFER_SIZE
> exec
->vtx
.buffer_used
+ 1024) {
310 /* The VBO exists and there's room for more */
311 if (exec
->vtx
.bufferobj
->Size
> 0) {
312 exec
->vtx
.buffer_map
=
313 (fi_type
*)ctx
->Driver
.MapBufferRange(ctx
,
314 exec
->vtx
.buffer_used
,
315 (VBO_VERT_BUFFER_SIZE
-
316 exec
->vtx
.buffer_used
),
320 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
323 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
= NULL
;
327 if (!exec
->vtx
.buffer_map
) {
328 /* Need to allocate a new VBO */
329 exec
->vtx
.buffer_used
= 0;
331 if (ctx
->Driver
.BufferData(ctx
, GL_ARRAY_BUFFER_ARB
,
332 VBO_VERT_BUFFER_SIZE
,
335 GL_DYNAMIC_STORAGE_BIT
|
336 GL_CLIENT_STORAGE_BIT
,
337 exec
->vtx
.bufferobj
)) {
338 /* buffer allocation worked, now map the buffer */
339 exec
->vtx
.buffer_map
=
340 (fi_type
*)ctx
->Driver
.MapBufferRange(ctx
,
341 0, VBO_VERT_BUFFER_SIZE
,
347 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "VBO allocation");
348 exec
->vtx
.buffer_map
= NULL
;
352 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
354 if (!exec
->vtx
.buffer_map
) {
356 _mesa_install_exec_vtxfmt( ctx
, &exec
->vtxfmt_noop
);
359 if (_mesa_using_noop_vtxfmt(ctx
->Exec
)) {
360 /* The no-op functions are installed so switch back to regular
361 * functions. We do this test just to avoid frequent and needless
362 * calls to _mesa_install_exec_vtxfmt().
364 _mesa_install_exec_vtxfmt(ctx
, &exec
->vtxfmt
);
369 printf("map %d..\n", exec
->vtx
.buffer_used
);
375 * Execute the buffer and save copied verts.
376 * \param keep_unmapped if true, leave the VBO unmapped when we're done.
379 vbo_exec_vtx_flush(struct vbo_exec_context
*exec
, GLboolean keepUnmapped
)
382 vbo_exec_debug_verts( exec
);
384 if (exec
->vtx
.prim_count
&&
385 exec
->vtx
.vert_count
) {
387 exec
->vtx
.copied
.nr
= vbo_copy_vertices( exec
);
389 if (exec
->vtx
.copied
.nr
!= exec
->vtx
.vert_count
) {
390 struct gl_context
*ctx
= exec
->ctx
;
392 /* Before the update_state() as this may raise _NEW_VARYING_VP_INPUTS
393 * from _mesa_set_varying_vp_inputs().
395 vbo_exec_bind_arrays( ctx
);
398 _mesa_update_state( ctx
);
400 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
)) {
401 vbo_exec_vtx_unmap( exec
);
405 printf("%s %d %d\n", __func__
, exec
->vtx
.prim_count
,
406 exec
->vtx
.vert_count
);
408 vbo_context(ctx
)->draw_prims( ctx
,
410 exec
->vtx
.prim_count
,
414 exec
->vtx
.vert_count
- 1,
417 /* If using a real VBO, get new storage -- unless asked not to.
419 if (_mesa_is_bufferobj(exec
->vtx
.bufferobj
) && !keepUnmapped
) {
420 vbo_exec_vtx_map( exec
);
425 /* May have to unmap explicitly if we didn't draw:
428 _mesa_is_bufferobj(exec
->vtx
.bufferobj
) &&
429 exec
->vtx
.buffer_map
) {
430 vbo_exec_vtx_unmap( exec
);
433 if (keepUnmapped
|| exec
->vtx
.vertex_size
== 0)
434 exec
->vtx
.max_vert
= 0;
436 exec
->vtx
.max_vert
= ((VBO_VERT_BUFFER_SIZE
- exec
->vtx
.buffer_used
) /
437 (exec
->vtx
.vertex_size
* sizeof(GLfloat
)));
439 exec
->vtx
.buffer_ptr
= exec
->vtx
.buffer_map
;
440 exec
->vtx
.prim_count
= 0;
441 exec
->vtx
.vert_count
= 0;