1 /**************************************************************************
3 * Copyright 2003 VMware, Inc.
4 * Copyright 2009 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 **************************************************************************/
29 #include "main/glheader.h"
30 #include "main/context.h"
31 #include "main/state.h"
32 #include "main/api_validate.h"
33 #include "main/dispatch.h"
34 #include "main/varray.h"
35 #include "main/bufferobj.h"
36 #include "main/enums.h"
37 #include "main/macros.h"
38 #include "main/transformfeedback.h"
40 #include "vbo_context.h"
44 * All vertex buffers should be in an unmapped state when we're about
45 * to draw. This debug function checks that.
48 check_buffers_are_unmapped(const struct gl_client_array
**inputs
)
53 for (i
= 0; i
< VERT_ATTRIB_MAX
; i
++) {
55 struct gl_buffer_object
*obj
= inputs
[i
]->BufferObj
;
56 assert(!_mesa_check_disallowed_mapping(obj
));
65 * A debug function that may be called from other parts of Mesa as
66 * needed during debugging.
69 vbo_check_buffers_are_unmapped(struct gl_context
*ctx
)
71 struct vbo_context
*vbo
= vbo_context(ctx
);
72 struct vbo_exec_context
*exec
= &vbo
->exec
;
73 /* check the current vertex arrays */
74 check_buffers_are_unmapped(exec
->array
.inputs
);
75 /* check the current glBegin/glVertex/glEnd-style VBO */
76 assert(!_mesa_check_disallowed_mapping(exec
->vtx
.bufferobj
));
82 * Compute min and max elements by scanning the index buffer for
83 * glDraw[Range]Elements() calls.
84 * If primitive restart is enabled, we need to ignore restart
85 * indexes when computing min/max.
88 vbo_get_minmax_index(struct gl_context
*ctx
,
89 const struct _mesa_prim
*prim
,
90 const struct _mesa_index_buffer
*ib
,
91 GLuint
*min_index
, GLuint
*max_index
,
94 const GLboolean restart
= ctx
->Array
._PrimitiveRestart
;
95 const GLuint restartIndex
= _mesa_primitive_restart_index(ctx
, ib
->type
);
96 const int index_size
= vbo_sizeof_ib_type(ib
->type
);
100 indices
= (char *) ib
->ptr
+ prim
->start
* index_size
;
101 if (_mesa_is_bufferobj(ib
->obj
)) {
102 GLsizeiptr size
= MIN2(count
* index_size
, ib
->obj
->Size
);
103 indices
= ctx
->Driver
.MapBufferRange(ctx
, (GLintptr
) indices
, size
,
104 GL_MAP_READ_BIT
, ib
->obj
,
109 case GL_UNSIGNED_INT
: {
110 const GLuint
*ui_indices
= (const GLuint
*)indices
;
114 for (i
= 0; i
< count
; i
++) {
115 if (ui_indices
[i
] != restartIndex
) {
116 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
117 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
122 for (i
= 0; i
< count
; i
++) {
123 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
124 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
131 case GL_UNSIGNED_SHORT
: {
132 const GLushort
*us_indices
= (const GLushort
*)indices
;
136 for (i
= 0; i
< count
; i
++) {
137 if (us_indices
[i
] != restartIndex
) {
138 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
139 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
144 for (i
= 0; i
< count
; i
++) {
145 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
146 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
153 case GL_UNSIGNED_BYTE
: {
154 const GLubyte
*ub_indices
= (const GLubyte
*)indices
;
158 for (i
= 0; i
< count
; i
++) {
159 if (ub_indices
[i
] != restartIndex
) {
160 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
161 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
166 for (i
= 0; i
< count
; i
++) {
167 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
168 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
180 if (_mesa_is_bufferobj(ib
->obj
)) {
181 ctx
->Driver
.UnmapBuffer(ctx
, ib
->obj
, MAP_INTERNAL
);
186 * Compute min and max elements for nr_prims
189 vbo_get_minmax_indices(struct gl_context
*ctx
,
190 const struct _mesa_prim
*prims
,
191 const struct _mesa_index_buffer
*ib
,
196 GLuint tmp_min
, tmp_max
;
203 for (i
= 0; i
< nr_prims
; i
++) {
204 const struct _mesa_prim
*start_prim
;
206 start_prim
= &prims
[i
];
207 count
= start_prim
->count
;
208 /* Do combination if possible to reduce map/unmap count */
209 while ((i
+ 1 < nr_prims
) &&
210 (prims
[i
].start
+ prims
[i
].count
== prims
[i
+1].start
)) {
211 count
+= prims
[i
+1].count
;
214 vbo_get_minmax_index(ctx
, start_prim
, ib
, &tmp_min
, &tmp_max
, count
);
215 *min_index
= MIN2(*min_index
, tmp_min
);
216 *max_index
= MAX2(*max_index
, tmp_max
);
222 * Check that element 'j' of the array has reasonable data.
224 * For debugging purposes; not normally used.
227 check_array_data(struct gl_context
*ctx
, struct gl_client_array
*array
,
228 GLuint attrib
, GLuint j
)
230 if (array
->Enabled
) {
231 const void *data
= array
->Ptr
;
232 if (_mesa_is_bufferobj(array
->BufferObj
)) {
233 if (!array
->BufferObj
->Mappings
[MAP_INTERNAL
].Pointer
) {
234 /* need to map now */
235 array
->BufferObj
->Mappings
[MAP_INTERNAL
].Pointer
=
236 ctx
->Driver
.MapBufferRange(ctx
, 0, array
->BufferObj
->Size
,
237 GL_MAP_READ_BIT
, array
->BufferObj
,
240 data
= ADD_POINTERS(data
,
241 array
->BufferObj
->Mappings
[MAP_INTERNAL
].Pointer
);
243 switch (array
->Type
) {
246 GLfloat
*f
= (GLfloat
*) ((GLubyte
*) data
+ array
->StrideB
* j
);
248 for (k
= 0; k
< array
->Size
; k
++) {
249 if (IS_INF_OR_NAN(f
[k
]) ||
250 f
[k
] >= 1.0e20
|| f
[k
] <= -1.0e10
) {
251 printf("Bad array data:\n");
252 printf(" Element[%u].%u = %f\n", j
, k
, f
[k
]);
253 printf(" Array %u at %p\n", attrib
, (void* ) array
);
254 printf(" Type 0x%x, Size %d, Stride %d\n",
255 array
->Type
, array
->Size
, array
->Stride
);
256 printf(" Address/offset %p in Buffer Object %u\n",
257 array
->Ptr
, array
->BufferObj
->Name
);
258 f
[k
] = 1.0; /* XXX replace the bad value! */
260 /*assert(!IS_INF_OR_NAN(f[k]));*/
272 * Unmap the buffer object referenced by given array, if mapped.
275 unmap_array_buffer(struct gl_context
*ctx
, struct gl_client_array
*array
)
277 if (array
->Enabled
&&
278 _mesa_is_bufferobj(array
->BufferObj
) &&
279 _mesa_bufferobj_mapped(array
->BufferObj
, MAP_INTERNAL
)) {
280 ctx
->Driver
.UnmapBuffer(ctx
, array
->BufferObj
, MAP_INTERNAL
);
286 * Examine the array's data for NaNs, etc.
287 * For debug purposes; not normally used.
290 check_draw_elements_data(struct gl_context
*ctx
, GLsizei count
, GLenum elemType
,
291 const void *elements
, GLint basevertex
)
293 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
297 if (_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
)) {
298 elemMap
= ctx
->Driver
.MapBufferRange(ctx
, 0,
299 ctx
->Array
.VAO
->IndexBufferObj
->Size
,
301 ctx
->Array
.VAO
->IndexBufferObj
,
303 elements
= ADD_POINTERS(elements
, elemMap
);
306 for (i
= 0; i
< count
; i
++) {
311 case GL_UNSIGNED_BYTE
:
312 j
= ((const GLubyte
*) elements
)[i
];
314 case GL_UNSIGNED_SHORT
:
315 j
= ((const GLushort
*) elements
)[i
];
317 case GL_UNSIGNED_INT
:
318 j
= ((const GLuint
*) elements
)[i
];
324 /* check element j of each enabled array */
325 for (k
= 0; k
< Elements(vao
->_VertexAttrib
); k
++) {
326 check_array_data(ctx
, &vao
->_VertexAttrib
[k
], k
, j
);
330 if (_mesa_is_bufferobj(vao
->IndexBufferObj
)) {
331 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.VAO
->IndexBufferObj
,
335 for (k
= 0; k
< Elements(vao
->_VertexAttrib
); k
++) {
336 unmap_array_buffer(ctx
, &vao
->_VertexAttrib
[k
]);
342 * Check array data, looking for NaNs, etc.
345 check_draw_arrays_data(struct gl_context
*ctx
, GLint start
, GLsizei count
)
352 * Print info/data for glDrawArrays(), for debugging.
355 print_draw_arrays(struct gl_context
*ctx
,
356 GLenum mode
, GLint start
, GLsizei count
)
358 struct vbo_context
*vbo
= vbo_context(ctx
);
359 struct vbo_exec_context
*exec
= &vbo
->exec
;
360 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
363 printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
366 for (i
= 0; i
< 32; i
++) {
367 struct gl_buffer_object
*bufObj
= exec
->array
.inputs
[i
]->BufferObj
;
368 GLuint bufName
= bufObj
->Name
;
369 GLint stride
= exec
->array
.inputs
[i
]->Stride
;
370 printf("attr %2d: size %d stride %d enabled %d "
371 "ptr %p Bufobj %u\n",
373 exec
->array
.inputs
[i
]->Size
,
375 /*exec->array.inputs[i]->Enabled,*/
376 vao
->_VertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
,
377 exec
->array
.inputs
[i
]->Ptr
,
381 GLubyte
*p
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
,
382 GL_MAP_READ_BIT
, bufObj
,
384 int offset
= (int) (GLintptr
) exec
->array
.inputs
[i
]->Ptr
;
385 float *f
= (float *) (p
+ offset
);
388 int n
= (count
* stride
) / 4;
391 printf(" Data at offset %d:\n", offset
);
392 for (i
= 0; i
< n
; i
++) {
393 printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
395 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
402 * Set the vbo->exec->inputs[] pointers to point to the enabled
403 * vertex arrays. This depends on the current vertex program/shader
404 * being executed because of whether or not generic vertex arrays
405 * alias the conventional vertex arrays.
406 * For arrays that aren't enabled, we set the input[attrib] pointer
407 * to point at a zero-stride current value "array".
410 recalculate_input_bindings(struct gl_context
*ctx
)
412 struct vbo_context
*vbo
= vbo_context(ctx
);
413 struct vbo_exec_context
*exec
= &vbo
->exec
;
414 struct gl_client_array
*vertexAttrib
= ctx
->Array
.VAO
->_VertexAttrib
;
415 const struct gl_client_array
**inputs
= &exec
->array
.inputs
[0];
416 GLbitfield64 const_inputs
= 0x0;
419 switch (get_program_mode(ctx
)) {
421 /* When no vertex program is active (or the vertex program is generated
422 * from fixed-function state). We put the material values into the
423 * generic slots. This is the only situation where material values
424 * are available as per-vertex attributes.
426 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
427 if (vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
)
428 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
430 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
431 const_inputs
|= VERT_BIT(i
);
435 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
436 inputs
[VERT_ATTRIB_GENERIC(i
)] =
437 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+i
];
438 const_inputs
|= VERT_BIT_GENERIC(i
);
441 /* Could use just about anything, just to fill in the empty
444 for (i
= MAT_ATTRIB_MAX
; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
445 inputs
[VERT_ATTRIB_GENERIC(i
)] = &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
446 const_inputs
|= VERT_BIT_GENERIC(i
);
451 /* There are no shaders in OpenGL ES 1.x, so this code path should be
452 * impossible to reach. The meta code is careful to not use shaders in
455 assert(ctx
->API
!= API_OPENGLES
);
457 /* In the compatibility profile of desktop OpenGL, the generic[0]
458 * attribute array aliases and overrides the legacy position array.
459 * Otherwise, legacy attributes available in the legacy slots,
460 * generic attributes in the generic slots and materials are not
461 * available as per-vertex attributes.
463 * In all other APIs, only the generic attributes exist, and none of the
464 * slots are considered "magic."
466 if (ctx
->API
== API_OPENGL_COMPAT
) {
467 if (vertexAttrib
[VERT_ATTRIB_GENERIC0
].Enabled
)
468 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_GENERIC0
];
469 else if (vertexAttrib
[VERT_ATTRIB_POS
].Enabled
)
470 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_POS
];
472 inputs
[0] = &vbo
->currval
[VBO_ATTRIB_POS
];
473 const_inputs
|= VERT_BIT_POS
;
476 for (i
= 1; i
< VERT_ATTRIB_FF_MAX
; i
++) {
477 if (vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
)
478 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
480 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
481 const_inputs
|= VERT_BIT_FF(i
);
485 for (i
= 1; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
486 if (vertexAttrib
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
487 inputs
[VERT_ATTRIB_GENERIC(i
)] =
488 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
490 inputs
[VERT_ATTRIB_GENERIC(i
)] =
491 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
492 const_inputs
|= VERT_BIT_GENERIC(i
);
496 inputs
[VERT_ATTRIB_GENERIC0
] = inputs
[0];
498 /* Other parts of the code assume that inputs[0] through
499 * inputs[VERT_ATTRIB_FF_MAX] will be non-NULL. However, in OpenGL
500 * ES 2.0+ or OpenGL core profile, none of these arrays should ever
503 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
504 assert(!vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
);
506 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
507 const_inputs
|= VERT_BIT_FF(i
);
510 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
511 if (vertexAttrib
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
512 inputs
[VERT_ATTRIB_GENERIC(i
)] =
513 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
515 inputs
[VERT_ATTRIB_GENERIC(i
)] =
516 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
517 const_inputs
|= VERT_BIT_GENERIC(i
);
525 _mesa_set_varying_vp_inputs( ctx
, VERT_BIT_ALL
& (~const_inputs
) );
526 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewArray
;
531 * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
532 * These will point to the arrays to actually use for drawing. Some will
533 * be user-provided arrays, other will be zero-stride const-valued arrays.
534 * Note that this might set the _NEW_VARYING_VP_INPUTS dirty flag so state
535 * validation must be done after this call.
538 vbo_bind_arrays(struct gl_context
*ctx
)
540 struct vbo_context
*vbo
= vbo_context(ctx
);
541 struct vbo_exec_context
*exec
= &vbo
->exec
;
543 vbo_draw_method(vbo
, DRAW_ARRAYS
);
545 if (exec
->array
.recalculate_inputs
) {
546 recalculate_input_bindings(ctx
);
547 exec
->array
.recalculate_inputs
= GL_FALSE
;
549 /* Again... because we may have changed the bitmask of per-vertex varying
550 * attributes. If we regenerate the fixed-function vertex program now
551 * we may be able to prune down the number of vertex attributes which we
552 * need in the shader.
555 /* Setting "validating" to TRUE prevents _mesa_update_state from
556 * invalidating what we just did.
558 exec
->validating
= GL_TRUE
;
559 _mesa_update_state(ctx
);
560 exec
->validating
= GL_FALSE
;
566 * Helper function called by the other DrawArrays() functions below.
567 * This is where we handle primitive restart for drawing non-indexed
568 * arrays. If primitive restart is enabled, it typically means
569 * splitting one DrawArrays() into two.
572 vbo_draw_arrays(struct gl_context
*ctx
, GLenum mode
, GLint start
,
573 GLsizei count
, GLuint numInstances
, GLuint baseInstance
)
575 struct vbo_context
*vbo
= vbo_context(ctx
);
576 struct vbo_exec_context
*exec
= &vbo
->exec
;
577 struct _mesa_prim prim
[2];
579 vbo_bind_arrays(ctx
);
581 /* init most fields to zero */
582 memset(prim
, 0, sizeof(prim
));
586 prim
[0].num_instances
= numInstances
;
587 prim
[0].base_instance
= baseInstance
;
588 prim
[0].is_indirect
= 0;
590 /* Implement the primitive restart index */
591 if (ctx
->Array
.PrimitiveRestart
&& ctx
->Array
.RestartIndex
< count
) {
592 GLuint primCount
= 0;
594 if (ctx
->Array
.RestartIndex
== start
) {
595 /* special case: RestartIndex at beginning */
597 prim
[0].start
= start
+ 1;
598 prim
[0].count
= count
- 1;
602 else if (ctx
->Array
.RestartIndex
== start
+ count
- 1) {
603 /* special case: RestartIndex at end */
605 prim
[0].start
= start
;
606 prim
[0].count
= count
- 1;
611 /* general case: RestartIndex in middle, split into two prims */
612 prim
[0].start
= start
;
613 prim
[0].count
= ctx
->Array
.RestartIndex
- start
;
616 prim
[1].start
= ctx
->Array
.RestartIndex
+ 1;
617 prim
[1].count
= count
- prim
[1].start
;
623 /* draw one or two prims */
624 check_buffers_are_unmapped(exec
->array
.inputs
);
625 vbo
->draw_prims(ctx
, prim
, primCount
, NULL
,
626 GL_TRUE
, start
, start
+ count
- 1, NULL
, NULL
);
630 /* no prim restart */
631 prim
[0].start
= start
;
632 prim
[0].count
= count
;
634 check_buffers_are_unmapped(exec
->array
.inputs
);
635 vbo
->draw_prims(ctx
, prim
, 1, NULL
,
636 GL_TRUE
, start
, start
+ count
- 1,
640 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
647 * Execute a glRectf() function.
649 static void GLAPIENTRY
650 vbo_exec_Rectf(GLfloat x1
, GLfloat y1
, GLfloat x2
, GLfloat y2
)
652 GET_CURRENT_CONTEXT(ctx
);
653 ASSERT_OUTSIDE_BEGIN_END(ctx
);
655 CALL_Begin(GET_DISPATCH(), (GL_QUADS
));
656 CALL_Vertex2f(GET_DISPATCH(), (x1
, y1
));
657 CALL_Vertex2f(GET_DISPATCH(), (x2
, y1
));
658 CALL_Vertex2f(GET_DISPATCH(), (x2
, y2
));
659 CALL_Vertex2f(GET_DISPATCH(), (x1
, y2
));
660 CALL_End(GET_DISPATCH(), ());
664 static void GLAPIENTRY
665 vbo_exec_EvalMesh1(GLenum mode
, GLint i1
, GLint i2
)
667 GET_CURRENT_CONTEXT(ctx
);
677 prim
= GL_LINE_STRIP
;
680 _mesa_error( ctx
, GL_INVALID_ENUM
, "glEvalMesh1(mode)" );
684 /* No effect if vertex maps disabled.
686 if (!ctx
->Eval
.Map1Vertex4
&&
687 !ctx
->Eval
.Map1Vertex3
)
690 du
= ctx
->Eval
.MapGrid1du
;
691 u
= ctx
->Eval
.MapGrid1u1
+ i1
* du
;
693 CALL_Begin(GET_DISPATCH(), (prim
));
694 for (i
=i1
;i
<=i2
;i
++,u
+=du
) {
695 CALL_EvalCoord1f(GET_DISPATCH(), (u
));
697 CALL_End(GET_DISPATCH(), ());
701 static void GLAPIENTRY
702 vbo_exec_EvalMesh2(GLenum mode
, GLint i1
, GLint i2
, GLint j1
, GLint j2
)
704 GET_CURRENT_CONTEXT(ctx
);
705 GLfloat u
, du
, v
, dv
, v1
, u1
;
714 _mesa_error( ctx
, GL_INVALID_ENUM
, "glEvalMesh2(mode)" );
718 /* No effect if vertex maps disabled.
720 if (!ctx
->Eval
.Map2Vertex4
&&
721 !ctx
->Eval
.Map2Vertex3
)
724 du
= ctx
->Eval
.MapGrid2du
;
725 dv
= ctx
->Eval
.MapGrid2dv
;
726 v1
= ctx
->Eval
.MapGrid2v1
+ j1
* dv
;
727 u1
= ctx
->Eval
.MapGrid2u1
+ i1
* du
;
731 CALL_Begin(GET_DISPATCH(), (GL_POINTS
));
732 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
733 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
734 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
737 CALL_End(GET_DISPATCH(), ());
740 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
741 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
742 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
743 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
745 CALL_End(GET_DISPATCH(), ());
747 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
748 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
749 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
750 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
752 CALL_End(GET_DISPATCH(), ());
756 for (v
=v1
,j
=j1
;j
<j2
;j
++,v
+=dv
) {
757 CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP
));
758 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
759 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
760 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
+dv
));
762 CALL_End(GET_DISPATCH(), ());
770 * Called from glDrawArrays when in immediate mode (not display list mode).
772 static void GLAPIENTRY
773 vbo_exec_DrawArrays(GLenum mode
, GLint start
, GLsizei count
)
775 GET_CURRENT_CONTEXT(ctx
);
777 if (MESA_VERBOSE
& VERBOSE_DRAW
)
778 _mesa_debug(ctx
, "glDrawArrays(%s, %d, %d)\n",
779 _mesa_lookup_enum_by_nr(mode
), start
, count
);
781 if (!_mesa_validate_DrawArrays( ctx
, mode
, start
, count
))
785 check_draw_arrays_data(ctx
, start
, count
);
787 vbo_draw_arrays(ctx
, mode
, start
, count
, 1, 0);
790 print_draw_arrays(ctx
, mode
, start
, count
);
795 * Called from glDrawArraysInstanced when in immediate mode (not
796 * display list mode).
798 static void GLAPIENTRY
799 vbo_exec_DrawArraysInstanced(GLenum mode
, GLint start
, GLsizei count
,
800 GLsizei numInstances
)
802 GET_CURRENT_CONTEXT(ctx
);
804 if (MESA_VERBOSE
& VERBOSE_DRAW
)
805 _mesa_debug(ctx
, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
806 _mesa_lookup_enum_by_nr(mode
), start
, count
, numInstances
);
808 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, start
, count
, numInstances
))
812 check_draw_arrays_data(ctx
, start
, count
);
814 vbo_draw_arrays(ctx
, mode
, start
, count
, numInstances
, 0);
817 print_draw_arrays(ctx
, mode
, start
, count
);
822 * Called from glDrawArraysInstancedBaseInstance when in immediate mode.
824 static void GLAPIENTRY
825 vbo_exec_DrawArraysInstancedBaseInstance(GLenum mode
, GLint first
, GLsizei count
,
826 GLsizei numInstances
, GLuint baseInstance
)
828 GET_CURRENT_CONTEXT(ctx
);
830 if (MESA_VERBOSE
& VERBOSE_DRAW
)
831 _mesa_debug(ctx
, "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n",
832 _mesa_lookup_enum_by_nr(mode
), first
, count
,
833 numInstances
, baseInstance
);
835 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, first
, count
,
840 check_draw_arrays_data(ctx
, first
, count
);
842 vbo_draw_arrays(ctx
, mode
, first
, count
, numInstances
, baseInstance
);
845 print_draw_arrays(ctx
, mode
, first
, count
);
851 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
856 dump_element_buffer(struct gl_context
*ctx
, GLenum type
)
859 ctx
->Driver
.MapBufferRange(ctx
, 0,
860 ctx
->Array
.VAO
->IndexBufferObj
->Size
,
862 ctx
->Array
.VAO
->IndexBufferObj
,
865 case GL_UNSIGNED_BYTE
:
867 const GLubyte
*us
= (const GLubyte
*) map
;
869 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
; i
++) {
870 printf("%02x ", us
[i
]);
877 case GL_UNSIGNED_SHORT
:
879 const GLushort
*us
= (const GLushort
*) map
;
881 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 2; i
++) {
882 printf("%04x ", us
[i
]);
889 case GL_UNSIGNED_INT
:
891 const GLuint
*us
= (const GLuint
*) map
;
893 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 4; i
++) {
894 printf("%08x ", us
[i
]);
905 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.VAO
->IndexBufferObj
,
912 * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
913 * Do the rendering for a glDrawElements or glDrawRangeElements call after
914 * we've validated buffer bounds, etc.
917 vbo_validated_drawrangeelements(struct gl_context
*ctx
, GLenum mode
,
918 GLboolean index_bounds_valid
,
919 GLuint start
, GLuint end
,
920 GLsizei count
, GLenum type
,
921 const GLvoid
*indices
,
922 GLint basevertex
, GLuint numInstances
,
925 struct vbo_context
*vbo
= vbo_context(ctx
);
926 struct vbo_exec_context
*exec
= &vbo
->exec
;
927 struct _mesa_index_buffer ib
;
928 struct _mesa_prim prim
[1];
930 vbo_bind_arrays(ctx
);
934 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
943 prim
[0].count
= count
;
945 prim
[0].is_indirect
= 0;
946 prim
[0].basevertex
= basevertex
;
947 prim
[0].num_instances
= numInstances
;
948 prim
[0].base_instance
= baseInstance
;
950 /* Need to give special consideration to rendering a range of
951 * indices starting somewhere above zero. Typically the
952 * application is issuing multiple DrawRangeElements() to draw
953 * successive primitives layed out linearly in the vertex arrays.
954 * Unless the vertex arrays are all in a VBO (or locked as with
955 * CVA), the OpenGL semantics imply that we need to re-read or
956 * re-upload the vertex data on each draw call.
958 * In the case of hardware tnl, we want to avoid starting the
959 * upload at zero, as it will mean every draw call uploads an
960 * increasing amount of not-used vertex data. Worse - in the
961 * software tnl module, all those vertices might be transformed and
962 * lit but never rendered.
964 * If we just upload or transform the vertices in start..end,
965 * however, the indices will be incorrect.
967 * At this level, we don't know exactly what the requirements of
968 * the backend are going to be, though it will likely boil down to
971 * 1) Do nothing, everything is in a VBO and is processed once
974 * 2) Adjust the indices and vertex arrays so that start becomes
977 * Rather than doing anything here, I'll provide a helper function
978 * for the latter case elsewhere.
981 check_buffers_are_unmapped(exec
->array
.inputs
);
982 vbo
->draw_prims(ctx
, prim
, 1, &ib
,
983 index_bounds_valid
, start
, end
, NULL
, NULL
);
985 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
992 * Called by glDrawRangeElementsBaseVertex() in immediate mode.
994 static void GLAPIENTRY
995 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
,
996 GLuint start
, GLuint end
,
997 GLsizei count
, GLenum type
,
998 const GLvoid
*indices
,
1001 static GLuint warnCount
= 0;
1002 GLboolean index_bounds_valid
= GL_TRUE
;
1004 /* This is only useful to catch invalid values in the "end" parameter
1007 GLuint max_element
= 2 * 1000 * 1000 * 1000; /* just a big number */
1009 GET_CURRENT_CONTEXT(ctx
);
1011 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1013 "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
1014 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
1015 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
1017 if (!_mesa_validate_DrawRangeElements( ctx
, mode
, start
, end
, count
,
1018 type
, indices
, basevertex
))
1021 if ((int) end
+ basevertex
< 0 ||
1022 start
+ basevertex
>= max_element
) {
1023 /* The application requested we draw using a range of indices that's
1024 * outside the bounds of the current VBO. This is invalid and appears
1025 * to give undefined results. The safest thing to do is to simply
1026 * ignore the range, in case the application botched their range tracking
1027 * but did provide valid indices. Also issue a warning indicating that
1028 * the application is broken.
1030 if (warnCount
++ < 10) {
1031 _mesa_warning(ctx
, "glDrawRangeElements(start %u, end %u, "
1032 "basevertex %d, count %d, type 0x%x, indices=%p):\n"
1033 "\trange is outside VBO bounds (max=%u); ignoring.\n"
1034 "\tThis should be fixed in the application.",
1035 start
, end
, basevertex
, count
, type
, indices
,
1038 index_bounds_valid
= GL_FALSE
;
1041 /* NOTE: It's important that 'end' is a reasonable value.
1042 * in _tnl_draw_prims(), we use end to determine how many vertices
1043 * to transform. If it's too large, we can unnecessarily split prims
1044 * or we can read/write out of memory in several different places!
1047 /* Catch/fix some potential user errors */
1048 if (type
== GL_UNSIGNED_BYTE
) {
1049 start
= MIN2(start
, 0xff);
1050 end
= MIN2(end
, 0xff);
1052 else if (type
== GL_UNSIGNED_SHORT
) {
1053 start
= MIN2(start
, 0xffff);
1054 end
= MIN2(end
, 0xffff);
1058 printf("glDraw[Range]Elements{,BaseVertex}"
1059 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
1061 start
, end
, type
, count
,
1062 ctx
->Array
.VAO
->IndexBufferObj
->Name
,
1066 if ((int) start
+ basevertex
< 0 ||
1067 end
+ basevertex
>= max_element
)
1068 index_bounds_valid
= GL_FALSE
;
1071 check_draw_elements_data(ctx
, count
, type
, indices
);
1073 (void) check_draw_elements_data
;
1076 vbo_validated_drawrangeelements(ctx
, mode
, index_bounds_valid
, start
, end
,
1077 count
, type
, indices
, basevertex
, 1, 0);
1082 * Called by glDrawRangeElements() in immediate mode.
1084 static void GLAPIENTRY
1085 vbo_exec_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
,
1086 GLsizei count
, GLenum type
, const GLvoid
*indices
)
1088 if (MESA_VERBOSE
& VERBOSE_DRAW
) {
1089 GET_CURRENT_CONTEXT(ctx
);
1091 "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
1092 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
1093 _mesa_lookup_enum_by_nr(type
), indices
);
1096 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1102 * Called by glDrawElements() in immediate mode.
1104 static void GLAPIENTRY
1105 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1106 const GLvoid
*indices
)
1108 GET_CURRENT_CONTEXT(ctx
);
1110 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1111 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1112 _mesa_lookup_enum_by_nr(mode
), count
,
1113 _mesa_lookup_enum_by_nr(type
), indices
);
1115 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
, 0 ))
1118 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1119 count
, type
, indices
, 0, 1, 0);
1124 * Called by glDrawElementsBaseVertex() in immediate mode.
1126 static void GLAPIENTRY
1127 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1128 const GLvoid
*indices
, GLint basevertex
)
1130 GET_CURRENT_CONTEXT(ctx
);
1132 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1133 _mesa_debug(ctx
, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
1134 _mesa_lookup_enum_by_nr(mode
), count
,
1135 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
1137 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
,
1141 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1142 count
, type
, indices
, basevertex
, 1, 0);
1147 * Called by glDrawElementsInstanced() in immediate mode.
1149 static void GLAPIENTRY
1150 vbo_exec_DrawElementsInstanced(GLenum mode
, GLsizei count
, GLenum type
,
1151 const GLvoid
*indices
, GLsizei numInstances
)
1153 GET_CURRENT_CONTEXT(ctx
);
1155 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1156 _mesa_debug(ctx
, "glDrawElementsInstanced(%s, %d, %s, %p, %d)\n",
1157 _mesa_lookup_enum_by_nr(mode
), count
,
1158 _mesa_lookup_enum_by_nr(type
), indices
, numInstances
);
1160 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1164 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1165 count
, type
, indices
, 0, numInstances
, 0);
1170 * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
1172 static void GLAPIENTRY
1173 vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1174 const GLvoid
*indices
, GLsizei numInstances
,
1177 GET_CURRENT_CONTEXT(ctx
);
1179 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1180 _mesa_debug(ctx
, "glDrawElementsInstancedBaseVertex(%s, %d, %s, %p, %d; %d)\n",
1181 _mesa_lookup_enum_by_nr(mode
), count
,
1182 _mesa_lookup_enum_by_nr(type
), indices
,
1183 numInstances
, basevertex
);
1185 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1186 numInstances
, basevertex
))
1189 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1190 count
, type
, indices
, basevertex
, numInstances
, 0);
1195 * Called by glDrawElementsInstancedBaseInstance() in immediate mode.
1197 static void GLAPIENTRY
1198 vbo_exec_DrawElementsInstancedBaseInstance(GLenum mode
, GLsizei count
, GLenum type
,
1199 const GLvoid
*indices
, GLsizei numInstances
,
1200 GLuint baseInstance
)
1202 GET_CURRENT_CONTEXT(ctx
);
1204 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1205 _mesa_debug(ctx
, "glDrawElementsInstancedBaseInstance(%s, %d, %s, %p, %d, %d)\n",
1206 _mesa_lookup_enum_by_nr(mode
), count
,
1207 _mesa_lookup_enum_by_nr(type
), indices
,
1208 numInstances
, baseInstance
);
1210 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1214 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1215 count
, type
, indices
, 0, numInstances
,
1221 * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode.
1223 static void GLAPIENTRY
1224 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode
, GLsizei count
, GLenum type
,
1225 const GLvoid
*indices
, GLsizei numInstances
,
1226 GLint basevertex
, GLuint baseInstance
)
1228 GET_CURRENT_CONTEXT(ctx
);
1230 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1231 _mesa_debug(ctx
, "glDrawElementsInstancedBaseVertexBaseInstance(%s, %d, %s, %p, %d, %d, %d)\n",
1232 _mesa_lookup_enum_by_nr(mode
), count
,
1233 _mesa_lookup_enum_by_nr(type
), indices
,
1234 numInstances
, basevertex
, baseInstance
);
1236 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1237 numInstances
, basevertex
))
1240 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1241 count
, type
, indices
, basevertex
, numInstances
,
1247 * Inner support for both _mesa_MultiDrawElements() and
1248 * _mesa_MultiDrawRangeElements().
1249 * This does the actual rendering after we've checked array indexes, etc.
1252 vbo_validated_multidrawelements(struct gl_context
*ctx
, GLenum mode
,
1253 const GLsizei
*count
, GLenum type
,
1254 const GLvoid
* const *indices
,
1256 const GLint
*basevertex
)
1258 struct vbo_context
*vbo
= vbo_context(ctx
);
1259 struct vbo_exec_context
*exec
= &vbo
->exec
;
1260 struct _mesa_index_buffer ib
;
1261 struct _mesa_prim
*prim
;
1262 unsigned int index_type_size
= vbo_sizeof_ib_type(type
);
1263 uintptr_t min_index_ptr
, max_index_ptr
;
1264 GLboolean fallback
= GL_FALSE
;
1270 prim
= calloc(primcount
, sizeof(*prim
));
1272 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
1276 vbo_bind_arrays(ctx
);
1278 min_index_ptr
= (uintptr_t)indices
[0];
1280 for (i
= 0; i
< primcount
; i
++) {
1281 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t)indices
[i
]);
1282 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t)indices
[i
] +
1283 index_type_size
* count
[i
]);
1286 /* Check if we can handle this thing as a bunch of index offsets from the
1287 * same index pointer. If we can't, then we have to fall back to doing
1288 * a draw_prims per primitive.
1289 * Check that the difference between each prim's indexes is a multiple of
1290 * the index/element size.
1292 if (index_type_size
!= 1) {
1293 for (i
= 0; i
< primcount
; i
++) {
1294 if ((((uintptr_t)indices
[i
] - min_index_ptr
) % index_type_size
) != 0) {
1301 /* Draw primitives individually if one count is zero, so we can easily skip
1304 for (i
= 0; i
< primcount
; i
++) {
1305 if (count
[i
] == 0) {
1311 /* If the index buffer isn't in a VBO, then treating the application's
1312 * subranges of the index buffer as one large index buffer may lead to
1313 * us reading unmapped memory.
1315 if (!_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
))
1319 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
1321 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1322 ib
.ptr
= (void *)min_index_ptr
;
1324 for (i
= 0; i
< primcount
; i
++) {
1325 prim
[i
].begin
= (i
== 0);
1326 prim
[i
].end
= (i
== primcount
- 1);
1329 prim
[i
].mode
= mode
;
1330 prim
[i
].start
= ((uintptr_t)indices
[i
] - min_index_ptr
) / index_type_size
;
1331 prim
[i
].count
= count
[i
];
1332 prim
[i
].indexed
= 1;
1333 prim
[i
].num_instances
= 1;
1334 prim
[i
].base_instance
= 0;
1335 prim
[i
].is_indirect
= 0;
1336 if (basevertex
!= NULL
)
1337 prim
[i
].basevertex
= basevertex
[i
];
1339 prim
[i
].basevertex
= 0;
1342 check_buffers_are_unmapped(exec
->array
.inputs
);
1343 vbo
->draw_prims(ctx
, prim
, primcount
, &ib
,
1344 false, ~0, ~0, NULL
, NULL
);
1346 /* render one prim at a time */
1347 for (i
= 0; i
< primcount
; i
++) {
1350 ib
.count
= count
[i
];
1352 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1353 ib
.ptr
= indices
[i
];
1359 prim
[0].mode
= mode
;
1361 prim
[0].count
= count
[i
];
1362 prim
[0].indexed
= 1;
1363 prim
[0].num_instances
= 1;
1364 prim
[0].base_instance
= 0;
1365 prim
[0].is_indirect
= 0;
1366 if (basevertex
!= NULL
)
1367 prim
[0].basevertex
= basevertex
[i
];
1369 prim
[0].basevertex
= 0;
1371 check_buffers_are_unmapped(exec
->array
.inputs
);
1372 vbo
->draw_prims(ctx
, prim
, 1, &ib
,
1373 false, ~0, ~0, NULL
, NULL
);
1379 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1385 static void GLAPIENTRY
1386 vbo_exec_MultiDrawElements(GLenum mode
,
1387 const GLsizei
*count
, GLenum type
,
1388 const GLvoid
* const *indices
,
1391 GET_CURRENT_CONTEXT(ctx
);
1393 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1397 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1402 static void GLAPIENTRY
1403 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
1404 const GLsizei
*count
, GLenum type
,
1405 const GLvoid
* const *indices
,
1407 const GLsizei
*basevertex
)
1409 GET_CURRENT_CONTEXT(ctx
);
1411 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1412 primcount
, basevertex
))
1415 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1420 vbo_draw_transform_feedback(struct gl_context
*ctx
, GLenum mode
,
1421 struct gl_transform_feedback_object
*obj
,
1422 GLuint stream
, GLuint numInstances
)
1424 struct vbo_context
*vbo
= vbo_context(ctx
);
1425 struct vbo_exec_context
*exec
= &vbo
->exec
;
1426 struct _mesa_prim prim
[2];
1428 if (!_mesa_validate_DrawTransformFeedback(ctx
, mode
, obj
, stream
,
1433 if (ctx
->Driver
.GetTransformFeedbackVertexCount
&&
1434 (ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
||
1435 !vbo_all_varyings_in_vbos(exec
->array
.inputs
))) {
1436 GLsizei n
= ctx
->Driver
.GetTransformFeedbackVertexCount(ctx
, obj
, stream
);
1437 vbo_draw_arrays(ctx
, mode
, 0, n
, numInstances
, 0);
1441 vbo_bind_arrays(ctx
);
1443 /* init most fields to zero */
1444 memset(prim
, 0, sizeof(prim
));
1447 prim
[0].mode
= mode
;
1448 prim
[0].num_instances
= numInstances
;
1449 prim
[0].base_instance
= 0;
1450 prim
[0].is_indirect
= 0;
1452 /* Maybe we should do some primitive splitting for primitive restart
1453 * (like in DrawArrays), but we have no way to know how many vertices
1454 * will be rendered. */
1456 check_buffers_are_unmapped(exec
->array
.inputs
);
1457 vbo
->draw_prims(ctx
, prim
, 1, NULL
,
1458 GL_TRUE
, 0, 0, obj
, NULL
);
1460 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1466 * Like DrawArrays, but take the count from a transform feedback object.
1467 * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.
1468 * \param name the transform feedback object
1469 * User still has to setup of the vertex attribute info with
1470 * glVertexPointer, glColorPointer, etc.
1471 * Part of GL_ARB_transform_feedback2.
1473 static void GLAPIENTRY
1474 vbo_exec_DrawTransformFeedback(GLenum mode
, GLuint name
)
1476 GET_CURRENT_CONTEXT(ctx
);
1477 struct gl_transform_feedback_object
*obj
=
1478 _mesa_lookup_transform_feedback_object(ctx
, name
);
1480 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1481 _mesa_debug(ctx
, "glDrawTransformFeedback(%s, %d)\n",
1482 _mesa_lookup_enum_by_nr(mode
), name
);
1484 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, 1);
1487 static void GLAPIENTRY
1488 vbo_exec_DrawTransformFeedbackStream(GLenum mode
, GLuint name
, GLuint stream
)
1490 GET_CURRENT_CONTEXT(ctx
);
1491 struct gl_transform_feedback_object
*obj
=
1492 _mesa_lookup_transform_feedback_object(ctx
, name
);
1494 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1495 _mesa_debug(ctx
, "glDrawTransformFeedbackStream(%s, %u, %u)\n",
1496 _mesa_lookup_enum_by_nr(mode
), name
, stream
);
1498 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, 1);
1501 static void GLAPIENTRY
1502 vbo_exec_DrawTransformFeedbackInstanced(GLenum mode
, GLuint name
,
1505 GET_CURRENT_CONTEXT(ctx
);
1506 struct gl_transform_feedback_object
*obj
=
1507 _mesa_lookup_transform_feedback_object(ctx
, name
);
1509 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1510 _mesa_debug(ctx
, "glDrawTransformFeedbackInstanced(%s, %d)\n",
1511 _mesa_lookup_enum_by_nr(mode
), name
);
1513 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, primcount
);
1516 static void GLAPIENTRY
1517 vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum mode
, GLuint name
,
1518 GLuint stream
, GLsizei primcount
)
1520 GET_CURRENT_CONTEXT(ctx
);
1521 struct gl_transform_feedback_object
*obj
=
1522 _mesa_lookup_transform_feedback_object(ctx
, name
);
1524 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1525 _mesa_debug(ctx
, "glDrawTransformFeedbackStreamInstanced"
1526 "(%s, %u, %u, %i)\n",
1527 _mesa_lookup_enum_by_nr(mode
), name
, stream
, primcount
);
1529 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, primcount
);
1533 vbo_validated_drawarraysindirect(struct gl_context
*ctx
,
1534 GLenum mode
, const GLvoid
*indirect
)
1536 struct vbo_context
*vbo
= vbo_context(ctx
);
1537 struct vbo_exec_context
*exec
= &vbo
->exec
;
1538 struct _mesa_prim prim
[1];
1540 vbo_bind_arrays(ctx
);
1542 memset(prim
, 0, sizeof(prim
));
1545 prim
[0].mode
= mode
;
1546 prim
[0].is_indirect
= 1;
1547 prim
[0].indirect_offset
= (GLsizeiptr
)indirect
;
1549 /* NOTE: We do NOT want to handle primitive restart here, nor perform any
1550 * other checks that require knowledge of the values in the command buffer.
1551 * That would defeat the whole purpose of this function.
1554 check_buffers_are_unmapped(exec
->array
.inputs
);
1555 vbo
->draw_prims(ctx
, prim
, 1,
1556 NULL
, GL_TRUE
, 0, ~0,
1558 ctx
->DrawIndirectBuffer
);
1560 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1565 vbo_validated_multidrawarraysindirect(struct gl_context
*ctx
,
1567 const GLvoid
*indirect
,
1568 GLsizei primcount
, GLsizei stride
)
1570 struct vbo_context
*vbo
= vbo_context(ctx
);
1571 struct vbo_exec_context
*exec
= &vbo
->exec
;
1572 struct _mesa_prim
*prim
;
1574 GLsizeiptr offset
= (GLsizeiptr
)indirect
;
1578 prim
= calloc(primcount
, sizeof(*prim
));
1580 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawArraysIndirect");
1584 vbo_bind_arrays(ctx
);
1587 prim
[primcount
- 1].end
= 1;
1588 for (i
= 0; i
< primcount
; ++i
, offset
+= stride
) {
1589 prim
[i
].mode
= mode
;
1590 prim
[i
].indirect_offset
= offset
;
1591 prim
[i
].is_indirect
= 1;
1594 check_buffers_are_unmapped(exec
->array
.inputs
);
1595 vbo
->draw_prims(ctx
, prim
, primcount
,
1596 NULL
, GL_TRUE
, 0, ~0,
1598 ctx
->DrawIndirectBuffer
);
1602 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1607 vbo_validated_drawelementsindirect(struct gl_context
*ctx
,
1608 GLenum mode
, GLenum type
,
1609 const GLvoid
*indirect
)
1611 struct vbo_context
*vbo
= vbo_context(ctx
);
1612 struct vbo_exec_context
*exec
= &vbo
->exec
;
1613 struct _mesa_index_buffer ib
;
1614 struct _mesa_prim prim
[1];
1616 vbo_bind_arrays(ctx
);
1618 ib
.count
= 0; /* unknown */
1620 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1623 memset(prim
, 0, sizeof(prim
));
1626 prim
[0].mode
= mode
;
1627 prim
[0].indexed
= 1;
1628 prim
[0].indirect_offset
= (GLsizeiptr
)indirect
;
1629 prim
[0].is_indirect
= 1;
1631 check_buffers_are_unmapped(exec
->array
.inputs
);
1632 vbo
->draw_prims(ctx
, prim
, 1,
1633 &ib
, GL_TRUE
, 0, ~0,
1635 ctx
->DrawIndirectBuffer
);
1637 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1642 vbo_validated_multidrawelementsindirect(struct gl_context
*ctx
,
1643 GLenum mode
, GLenum type
,
1644 const GLvoid
*indirect
,
1645 GLsizei primcount
, GLsizei stride
)
1647 struct vbo_context
*vbo
= vbo_context(ctx
);
1648 struct vbo_exec_context
*exec
= &vbo
->exec
;
1649 struct _mesa_index_buffer ib
;
1650 struct _mesa_prim
*prim
;
1652 GLsizeiptr offset
= (GLsizeiptr
)indirect
;
1656 prim
= calloc(primcount
, sizeof(*prim
));
1658 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElementsIndirect");
1662 vbo_bind_arrays(ctx
);
1664 /* NOTE: IndexBufferObj is guaranteed to be a VBO. */
1666 ib
.count
= 0; /* unknown */
1668 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1672 prim
[primcount
- 1].end
= 1;
1673 for (i
= 0; i
< primcount
; ++i
, offset
+= stride
) {
1674 prim
[i
].mode
= mode
;
1675 prim
[i
].indexed
= 1;
1676 prim
[i
].indirect_offset
= offset
;
1677 prim
[i
].is_indirect
= 1;
1680 check_buffers_are_unmapped(exec
->array
.inputs
);
1681 vbo
->draw_prims(ctx
, prim
, primcount
,
1682 &ib
, GL_TRUE
, 0, ~0,
1684 ctx
->DrawIndirectBuffer
);
1688 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1693 * Like [Multi]DrawArrays/Elements, but they take most arguments from
1696 static void GLAPIENTRY
1697 vbo_exec_DrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
)
1699 GET_CURRENT_CONTEXT(ctx
);
1701 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1702 _mesa_debug(ctx
, "glDrawArraysIndirect(%s, %p)\n",
1703 _mesa_lookup_enum_by_nr(mode
), indirect
);
1705 if (!_mesa_validate_DrawArraysIndirect(ctx
, mode
, indirect
))
1708 vbo_validated_drawarraysindirect(ctx
, mode
, indirect
);
1711 static void GLAPIENTRY
1712 vbo_exec_DrawElementsIndirect(GLenum mode
, GLenum type
,
1713 const GLvoid
*indirect
)
1715 GET_CURRENT_CONTEXT(ctx
);
1717 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1718 _mesa_debug(ctx
, "glDrawElementsIndirect(%s, %s, %p)\n",
1719 _mesa_lookup_enum_by_nr(mode
),
1720 _mesa_lookup_enum_by_nr(type
), indirect
);
1722 if (!_mesa_validate_DrawElementsIndirect(ctx
, mode
, type
, indirect
))
1725 vbo_validated_drawelementsindirect(ctx
, mode
, type
, indirect
);
1728 static void GLAPIENTRY
1729 vbo_exec_MultiDrawArraysIndirect(GLenum mode
,
1730 const GLvoid
*indirect
,
1731 GLsizei primcount
, GLsizei stride
)
1733 GET_CURRENT_CONTEXT(ctx
);
1735 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1736 _mesa_debug(ctx
, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n",
1737 _mesa_lookup_enum_by_nr(mode
), indirect
, primcount
, stride
);
1739 /* If <stride> is zero, the array elements are treated as tightly packed. */
1741 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1743 if (!_mesa_validate_MultiDrawArraysIndirect(ctx
, mode
,
1748 vbo_validated_multidrawarraysindirect(ctx
, mode
,
1753 static void GLAPIENTRY
1754 vbo_exec_MultiDrawElementsIndirect(GLenum mode
, GLenum type
,
1755 const GLvoid
*indirect
,
1756 GLsizei primcount
, GLsizei stride
)
1758 GET_CURRENT_CONTEXT(ctx
);
1760 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1761 _mesa_debug(ctx
, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n",
1762 _mesa_lookup_enum_by_nr(mode
),
1763 _mesa_lookup_enum_by_nr(type
), indirect
, primcount
, stride
);
1765 /* If <stride> is zero, the array elements are treated as tightly packed. */
1767 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1769 if (!_mesa_validate_MultiDrawElementsIndirect(ctx
, mode
, type
,
1774 vbo_validated_multidrawelementsindirect(ctx
, mode
, type
,
1780 * Initialize the dispatch table with the VBO functions for drawing.
1783 vbo_initialize_exec_dispatch(const struct gl_context
*ctx
,
1784 struct _glapi_table
*exec
)
1786 SET_DrawArrays(exec
, vbo_exec_DrawArrays
);
1787 SET_DrawElements(exec
, vbo_exec_DrawElements
);
1789 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1790 SET_DrawRangeElements(exec
, vbo_exec_DrawRangeElements
);
1793 SET_MultiDrawElementsEXT(exec
, vbo_exec_MultiDrawElements
);
1795 if (ctx
->API
== API_OPENGL_COMPAT
) {
1796 SET_Rectf(exec
, vbo_exec_Rectf
);
1797 SET_EvalMesh1(exec
, vbo_exec_EvalMesh1
);
1798 SET_EvalMesh2(exec
, vbo_exec_EvalMesh2
);
1801 if (_mesa_is_desktop_gl(ctx
)) {
1802 SET_DrawElementsBaseVertex(exec
, vbo_exec_DrawElementsBaseVertex
);
1803 SET_DrawRangeElementsBaseVertex(exec
, vbo_exec_DrawRangeElementsBaseVertex
);
1804 SET_MultiDrawElementsBaseVertex(exec
, vbo_exec_MultiDrawElementsBaseVertex
);
1805 SET_DrawArraysInstancedBaseInstance(exec
, vbo_exec_DrawArraysInstancedBaseInstance
);
1806 SET_DrawElementsInstancedBaseInstance(exec
, vbo_exec_DrawElementsInstancedBaseInstance
);
1807 SET_DrawElementsInstancedBaseVertex(exec
, vbo_exec_DrawElementsInstancedBaseVertex
);
1808 SET_DrawElementsInstancedBaseVertexBaseInstance(exec
, vbo_exec_DrawElementsInstancedBaseVertexBaseInstance
);
1811 if (ctx
->API
== API_OPENGL_CORE
) {
1812 SET_DrawArraysIndirect(exec
, vbo_exec_DrawArraysIndirect
);
1813 SET_DrawElementsIndirect(exec
, vbo_exec_DrawElementsIndirect
);
1814 SET_MultiDrawArraysIndirect(exec
, vbo_exec_MultiDrawArraysIndirect
);
1815 SET_MultiDrawElementsIndirect(exec
, vbo_exec_MultiDrawElementsIndirect
);
1818 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1819 SET_DrawArraysInstancedARB(exec
, vbo_exec_DrawArraysInstanced
);
1820 SET_DrawElementsInstancedARB(exec
, vbo_exec_DrawElementsInstanced
);
1823 if (_mesa_is_desktop_gl(ctx
)) {
1824 SET_DrawTransformFeedback(exec
, vbo_exec_DrawTransformFeedback
);
1825 SET_DrawTransformFeedbackStream(exec
, vbo_exec_DrawTransformFeedbackStream
);
1826 SET_DrawTransformFeedbackInstanced(exec
, vbo_exec_DrawTransformFeedbackInstanced
);
1827 SET_DrawTransformFeedbackStreamInstanced(exec
, vbo_exec_DrawTransformFeedbackStreamInstanced
);
1834 * The following functions are only used for OpenGL ES 1/2 support.
1835 * And some aren't even supported (yet) in ES 1/2.
1840 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
1842 vbo_exec_DrawArrays(mode
, first
, count
);
1846 _mesa_DrawArraysInstanced(GLenum mode
, GLint first
, GLsizei count
,
1849 vbo_exec_DrawArraysInstanced(mode
, first
, count
, primcount
);
1853 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1854 const GLvoid
*indices
)
1856 vbo_exec_DrawElements(mode
, count
, type
, indices
);
1861 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1862 const GLvoid
*indices
, GLint basevertex
)
1864 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
1869 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
1870 GLenum type
, const GLvoid
*indices
)
1872 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
1877 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
1878 GLsizei count
, GLenum type
,
1879 const GLvoid
*indices
, GLint basevertex
)
1881 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1882 indices
, basevertex
);
1887 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
1888 const GLvoid
**indices
, GLsizei primcount
)
1890 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
1895 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
1896 const GLsizei
*count
, GLenum type
,
1897 const GLvoid
**indices
, GLsizei primcount
,
1898 const GLint
*basevertex
)
1900 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
1901 primcount
, basevertex
);
1905 _mesa_DrawTransformFeedback(GLenum mode
, GLuint name
)
1907 vbo_exec_DrawTransformFeedback(mode
, name
);