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_bufferobj_mapped(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_bufferobj_mapped(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
);
108 case GL_UNSIGNED_INT
: {
109 const GLuint
*ui_indices
= (const GLuint
*)indices
;
113 for (i
= 0; i
< count
; i
++) {
114 if (ui_indices
[i
] != restartIndex
) {
115 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
116 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
121 for (i
= 0; i
< count
; i
++) {
122 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
123 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
130 case GL_UNSIGNED_SHORT
: {
131 const GLushort
*us_indices
= (const GLushort
*)indices
;
135 for (i
= 0; i
< count
; i
++) {
136 if (us_indices
[i
] != restartIndex
) {
137 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
138 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
143 for (i
= 0; i
< count
; i
++) {
144 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
145 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
152 case GL_UNSIGNED_BYTE
: {
153 const GLubyte
*ub_indices
= (const GLubyte
*)indices
;
157 for (i
= 0; i
< count
; i
++) {
158 if (ub_indices
[i
] != restartIndex
) {
159 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
160 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
165 for (i
= 0; i
< count
; i
++) {
166 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
167 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
179 if (_mesa_is_bufferobj(ib
->obj
)) {
180 ctx
->Driver
.UnmapBuffer(ctx
, ib
->obj
);
185 * Compute min and max elements for nr_prims
188 vbo_get_minmax_indices(struct gl_context
*ctx
,
189 const struct _mesa_prim
*prims
,
190 const struct _mesa_index_buffer
*ib
,
195 GLuint tmp_min
, tmp_max
;
202 for (i
= 0; i
< nr_prims
; i
++) {
203 const struct _mesa_prim
*start_prim
;
205 start_prim
= &prims
[i
];
206 count
= start_prim
->count
;
207 /* Do combination if possible to reduce map/unmap count */
208 while ((i
+ 1 < nr_prims
) &&
209 (prims
[i
].start
+ prims
[i
].count
== prims
[i
+1].start
)) {
210 count
+= prims
[i
+1].count
;
213 vbo_get_minmax_index(ctx
, start_prim
, ib
, &tmp_min
, &tmp_max
, count
);
214 *min_index
= MIN2(*min_index
, tmp_min
);
215 *max_index
= MAX2(*max_index
, tmp_max
);
221 * Check that element 'j' of the array has reasonable data.
223 * For debugging purposes; not normally used.
226 check_array_data(struct gl_context
*ctx
, struct gl_client_array
*array
,
227 GLuint attrib
, GLuint j
)
229 if (array
->Enabled
) {
230 const void *data
= array
->Ptr
;
231 if (_mesa_is_bufferobj(array
->BufferObj
)) {
232 if (!array
->BufferObj
->Pointer
) {
233 /* need to map now */
234 array
->BufferObj
->Pointer
=
235 ctx
->Driver
.MapBufferRange(ctx
, 0, array
->BufferObj
->Size
,
236 GL_MAP_READ_BIT
, array
->BufferObj
);
238 data
= ADD_POINTERS(data
, array
->BufferObj
->Pointer
);
240 switch (array
->Type
) {
243 GLfloat
*f
= (GLfloat
*) ((GLubyte
*) data
+ array
->StrideB
* j
);
245 for (k
= 0; k
< array
->Size
; k
++) {
246 if (IS_INF_OR_NAN(f
[k
]) ||
247 f
[k
] >= 1.0e20
|| f
[k
] <= -1.0e10
) {
248 printf("Bad array data:\n");
249 printf(" Element[%u].%u = %f\n", j
, k
, f
[k
]);
250 printf(" Array %u at %p\n", attrib
, (void* ) array
);
251 printf(" Type 0x%x, Size %d, Stride %d\n",
252 array
->Type
, array
->Size
, array
->Stride
);
253 printf(" Address/offset %p in Buffer Object %u\n",
254 array
->Ptr
, array
->BufferObj
->Name
);
255 f
[k
] = 1.0; /* XXX replace the bad value! */
257 /*assert(!IS_INF_OR_NAN(f[k]));*/
269 * Unmap the buffer object referenced by given array, if mapped.
272 unmap_array_buffer(struct gl_context
*ctx
, struct gl_client_array
*array
)
274 if (array
->Enabled
&&
275 _mesa_is_bufferobj(array
->BufferObj
) &&
276 _mesa_bufferobj_mapped(array
->BufferObj
)) {
277 ctx
->Driver
.UnmapBuffer(ctx
, array
->BufferObj
);
283 * Examine the array's data for NaNs, etc.
284 * For debug purposes; not normally used.
287 check_draw_elements_data(struct gl_context
*ctx
, GLsizei count
, GLenum elemType
,
288 const void *elements
, GLint basevertex
)
290 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
294 if (_mesa_is_bufferobj(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
)) {
295 elemMap
= ctx
->Driver
.MapBufferRange(ctx
, 0,
296 ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Size
,
298 ctx
->Array
.ArrayObj
->ElementArrayBufferObj
);
299 elements
= ADD_POINTERS(elements
, elemMap
);
302 for (i
= 0; i
< count
; i
++) {
307 case GL_UNSIGNED_BYTE
:
308 j
= ((const GLubyte
*) elements
)[i
];
310 case GL_UNSIGNED_SHORT
:
311 j
= ((const GLushort
*) elements
)[i
];
313 case GL_UNSIGNED_INT
:
314 j
= ((const GLuint
*) elements
)[i
];
320 /* check element j of each enabled array */
321 for (k
= 0; k
< Elements(arrayObj
->_VertexAttrib
); k
++) {
322 check_array_data(ctx
, &arrayObj
->_VertexAttrib
[k
], k
, j
);
326 if (_mesa_is_bufferobj(arrayObj
->ElementArrayBufferObj
)) {
327 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.ArrayObj
->ElementArrayBufferObj
);
330 for (k
= 0; k
< Elements(arrayObj
->_VertexAttrib
); k
++) {
331 unmap_array_buffer(ctx
, &arrayObj
->_VertexAttrib
[k
]);
337 * Check array data, looking for NaNs, etc.
340 check_draw_arrays_data(struct gl_context
*ctx
, GLint start
, GLsizei count
)
347 * Print info/data for glDrawArrays(), for debugging.
350 print_draw_arrays(struct gl_context
*ctx
,
351 GLenum mode
, GLint start
, GLsizei count
)
353 struct vbo_context
*vbo
= vbo_context(ctx
);
354 struct vbo_exec_context
*exec
= &vbo
->exec
;
355 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
358 printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
361 for (i
= 0; i
< 32; i
++) {
362 struct gl_buffer_object
*bufObj
= exec
->array
.inputs
[i
]->BufferObj
;
363 GLuint bufName
= bufObj
->Name
;
364 GLint stride
= exec
->array
.inputs
[i
]->Stride
;
365 printf("attr %2d: size %d stride %d enabled %d "
366 "ptr %p Bufobj %u\n",
368 exec
->array
.inputs
[i
]->Size
,
370 /*exec->array.inputs[i]->Enabled,*/
371 arrayObj
->_VertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
,
372 exec
->array
.inputs
[i
]->Ptr
,
376 GLubyte
*p
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
,
377 GL_MAP_READ_BIT
, bufObj
);
378 int offset
= (int) (GLintptr
) exec
->array
.inputs
[i
]->Ptr
;
379 float *f
= (float *) (p
+ offset
);
382 int n
= (count
* stride
) / 4;
385 printf(" Data at offset %d:\n", offset
);
386 for (i
= 0; i
< n
; i
++) {
387 printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
389 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
);
396 * Set the vbo->exec->inputs[] pointers to point to the enabled
397 * vertex arrays. This depends on the current vertex program/shader
398 * being executed because of whether or not generic vertex arrays
399 * alias the conventional vertex arrays.
400 * For arrays that aren't enabled, we set the input[attrib] pointer
401 * to point at a zero-stride current value "array".
404 recalculate_input_bindings(struct gl_context
*ctx
)
406 struct vbo_context
*vbo
= vbo_context(ctx
);
407 struct vbo_exec_context
*exec
= &vbo
->exec
;
408 struct gl_client_array
*vertexAttrib
= ctx
->Array
.ArrayObj
->_VertexAttrib
;
409 const struct gl_client_array
**inputs
= &exec
->array
.inputs
[0];
410 GLbitfield64 const_inputs
= 0x0;
413 switch (get_program_mode(ctx
)) {
415 /* When no vertex program is active (or the vertex program is generated
416 * from fixed-function state). We put the material values into the
417 * generic slots. This is the only situation where material values
418 * are available as per-vertex attributes.
420 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
421 if (vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
)
422 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
424 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
425 const_inputs
|= VERT_BIT(i
);
429 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
430 inputs
[VERT_ATTRIB_GENERIC(i
)] =
431 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+i
];
432 const_inputs
|= VERT_BIT_GENERIC(i
);
435 /* Could use just about anything, just to fill in the empty
438 for (i
= MAT_ATTRIB_MAX
; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
439 inputs
[VERT_ATTRIB_GENERIC(i
)] = &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
440 const_inputs
|= VERT_BIT_GENERIC(i
);
445 /* There are no shaders in OpenGL ES 1.x, so this code path should be
446 * impossible to reach. The meta code is careful to not use shaders in
449 assert(ctx
->API
!= API_OPENGLES
);
451 /* In the compatibility profile of desktop OpenGL, the generic[0]
452 * attribute array aliases and overrides the legacy position array.
453 * Otherwise, legacy attributes available in the legacy slots,
454 * generic attributes in the generic slots and materials are not
455 * available as per-vertex attributes.
457 * In all other APIs, only the generic attributes exist, and none of the
458 * slots are considered "magic."
460 if (ctx
->API
== API_OPENGL_COMPAT
) {
461 if (vertexAttrib
[VERT_ATTRIB_GENERIC0
].Enabled
)
462 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_GENERIC0
];
463 else if (vertexAttrib
[VERT_ATTRIB_POS
].Enabled
)
464 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_POS
];
466 inputs
[0] = &vbo
->currval
[VBO_ATTRIB_POS
];
467 const_inputs
|= VERT_BIT_POS
;
470 for (i
= 1; i
< VERT_ATTRIB_FF_MAX
; i
++) {
471 if (vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
)
472 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
474 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
475 const_inputs
|= VERT_BIT_FF(i
);
479 for (i
= 1; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
480 if (vertexAttrib
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
481 inputs
[VERT_ATTRIB_GENERIC(i
)] =
482 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
484 inputs
[VERT_ATTRIB_GENERIC(i
)] =
485 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
486 const_inputs
|= VERT_BIT_GENERIC(i
);
490 inputs
[VERT_ATTRIB_GENERIC0
] = inputs
[0];
492 /* Other parts of the code assume that inputs[0] through
493 * inputs[VERT_ATTRIB_FF_MAX] will be non-NULL. However, in OpenGL
494 * ES 2.0+ or OpenGL core profile, none of these arrays should ever
497 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
498 assert(!vertexAttrib
[VERT_ATTRIB_FF(i
)].Enabled
);
500 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+i
];
501 const_inputs
|= VERT_BIT_FF(i
);
504 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
505 if (vertexAttrib
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
506 inputs
[VERT_ATTRIB_GENERIC(i
)] =
507 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
509 inputs
[VERT_ATTRIB_GENERIC(i
)] =
510 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+i
];
511 const_inputs
|= VERT_BIT_GENERIC(i
);
519 _mesa_set_varying_vp_inputs( ctx
, VERT_BIT_ALL
& (~const_inputs
) );
520 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewArray
;
525 * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
526 * These will point to the arrays to actually use for drawing. Some will
527 * be user-provided arrays, other will be zero-stride const-valued arrays.
528 * Note that this might set the _NEW_VARYING_VP_INPUTS dirty flag so state
529 * validation must be done after this call.
532 vbo_bind_arrays(struct gl_context
*ctx
)
534 struct vbo_context
*vbo
= vbo_context(ctx
);
535 struct vbo_exec_context
*exec
= &vbo
->exec
;
537 vbo_draw_method(vbo
, DRAW_ARRAYS
);
539 if (exec
->array
.recalculate_inputs
) {
540 recalculate_input_bindings(ctx
);
541 exec
->array
.recalculate_inputs
= GL_FALSE
;
543 /* Again... because we may have changed the bitmask of per-vertex varying
544 * attributes. If we regenerate the fixed-function vertex program now
545 * we may be able to prune down the number of vertex attributes which we
546 * need in the shader.
549 /* Setting "validating" to TRUE prevents _mesa_update_state from
550 * invalidating what we just did.
552 exec
->validating
= GL_TRUE
;
553 _mesa_update_state(ctx
);
554 exec
->validating
= GL_FALSE
;
561 * Handle a draw case that potentially has primitive restart enabled.
563 * If primitive restart is enabled, and PrimitiveRestartInSoftware is
564 * set, then vbo_sw_primitive_restart is used to handle the primitive
565 * restart case in software.
568 vbo_handle_primitive_restart(struct gl_context
*ctx
,
569 const struct _mesa_prim
*prim
,
571 const struct _mesa_index_buffer
*ib
,
572 GLboolean index_bounds_valid
,
576 struct vbo_context
*vbo
= vbo_context(ctx
);
579 ctx
->Const
.PrimitiveRestartInSoftware
&&
580 ctx
->Array
._PrimitiveRestart
) {
581 /* Handle primitive restart in software */
582 vbo_sw_primitive_restart(ctx
, prim
, nr_prims
, ib
, NULL
);
584 /* Call driver directly for draw_prims */
585 vbo
->draw_prims(ctx
, prim
, nr_prims
, ib
,
586 index_bounds_valid
, min_index
, max_index
, NULL
, NULL
);
592 * Helper function called by the other DrawArrays() functions below.
593 * This is where we handle primitive restart for drawing non-indexed
594 * arrays. If primitive restart is enabled, it typically means
595 * splitting one DrawArrays() into two.
598 vbo_draw_arrays(struct gl_context
*ctx
, GLenum mode
, GLint start
,
599 GLsizei count
, GLuint numInstances
, GLuint baseInstance
)
601 struct vbo_context
*vbo
= vbo_context(ctx
);
602 struct vbo_exec_context
*exec
= &vbo
->exec
;
603 struct _mesa_prim prim
[2];
605 vbo_bind_arrays(ctx
);
607 /* init most fields to zero */
608 memset(prim
, 0, sizeof(prim
));
612 prim
[0].num_instances
= numInstances
;
613 prim
[0].base_instance
= baseInstance
;
614 prim
[0].is_indirect
= 0;
616 /* Implement the primitive restart index */
617 if (ctx
->Array
.PrimitiveRestart
&& ctx
->Array
.RestartIndex
< count
) {
618 GLuint primCount
= 0;
620 if (ctx
->Array
.RestartIndex
== start
) {
621 /* special case: RestartIndex at beginning */
623 prim
[0].start
= start
+ 1;
624 prim
[0].count
= count
- 1;
628 else if (ctx
->Array
.RestartIndex
== start
+ count
- 1) {
629 /* special case: RestartIndex at end */
631 prim
[0].start
= start
;
632 prim
[0].count
= count
- 1;
637 /* general case: RestartIndex in middle, split into two prims */
638 prim
[0].start
= start
;
639 prim
[0].count
= ctx
->Array
.RestartIndex
- start
;
642 prim
[1].start
= ctx
->Array
.RestartIndex
+ 1;
643 prim
[1].count
= count
- prim
[1].start
;
649 /* draw one or two prims */
650 check_buffers_are_unmapped(exec
->array
.inputs
);
651 vbo
->draw_prims(ctx
, prim
, primCount
, NULL
,
652 GL_TRUE
, start
, start
+ count
- 1, NULL
, NULL
);
656 /* no prim restart */
657 prim
[0].start
= start
;
658 prim
[0].count
= count
;
660 check_buffers_are_unmapped(exec
->array
.inputs
);
661 vbo
->draw_prims(ctx
, prim
, 1, NULL
,
662 GL_TRUE
, start
, start
+ count
- 1,
666 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
673 * Execute a glRectf() function.
675 static void GLAPIENTRY
676 vbo_exec_Rectf(GLfloat x1
, GLfloat y1
, GLfloat x2
, GLfloat y2
)
678 GET_CURRENT_CONTEXT(ctx
);
679 ASSERT_OUTSIDE_BEGIN_END(ctx
);
681 CALL_Begin(GET_DISPATCH(), (GL_QUADS
));
682 CALL_Vertex2f(GET_DISPATCH(), (x1
, y1
));
683 CALL_Vertex2f(GET_DISPATCH(), (x2
, y1
));
684 CALL_Vertex2f(GET_DISPATCH(), (x2
, y2
));
685 CALL_Vertex2f(GET_DISPATCH(), (x1
, y2
));
686 CALL_End(GET_DISPATCH(), ());
690 static void GLAPIENTRY
691 vbo_exec_EvalMesh1(GLenum mode
, GLint i1
, GLint i2
)
693 GET_CURRENT_CONTEXT(ctx
);
703 prim
= GL_LINE_STRIP
;
706 _mesa_error( ctx
, GL_INVALID_ENUM
, "glEvalMesh1(mode)" );
710 /* No effect if vertex maps disabled.
712 if (!ctx
->Eval
.Map1Vertex4
&&
713 !ctx
->Eval
.Map1Vertex3
)
716 du
= ctx
->Eval
.MapGrid1du
;
717 u
= ctx
->Eval
.MapGrid1u1
+ i1
* du
;
719 CALL_Begin(GET_DISPATCH(), (prim
));
720 for (i
=i1
;i
<=i2
;i
++,u
+=du
) {
721 CALL_EvalCoord1f(GET_DISPATCH(), (u
));
723 CALL_End(GET_DISPATCH(), ());
727 static void GLAPIENTRY
728 vbo_exec_EvalMesh2(GLenum mode
, GLint i1
, GLint i2
, GLint j1
, GLint j2
)
730 GET_CURRENT_CONTEXT(ctx
);
731 GLfloat u
, du
, v
, dv
, v1
, u1
;
740 _mesa_error( ctx
, GL_INVALID_ENUM
, "glEvalMesh2(mode)" );
744 /* No effect if vertex maps disabled.
746 if (!ctx
->Eval
.Map2Vertex4
&&
747 !ctx
->Eval
.Map2Vertex3
)
750 du
= ctx
->Eval
.MapGrid2du
;
751 dv
= ctx
->Eval
.MapGrid2dv
;
752 v1
= ctx
->Eval
.MapGrid2v1
+ j1
* dv
;
753 u1
= ctx
->Eval
.MapGrid2u1
+ i1
* du
;
757 CALL_Begin(GET_DISPATCH(), (GL_POINTS
));
758 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
759 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
760 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
763 CALL_End(GET_DISPATCH(), ());
766 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
767 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
768 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
769 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
771 CALL_End(GET_DISPATCH(), ());
773 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
774 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
775 for (v
=v1
,j
=j1
;j
<=j2
;j
++,v
+=dv
) {
776 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
778 CALL_End(GET_DISPATCH(), ());
782 for (v
=v1
,j
=j1
;j
<j2
;j
++,v
+=dv
) {
783 CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP
));
784 for (u
=u1
,i
=i1
;i
<=i2
;i
++,u
+=du
) {
785 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
786 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
+dv
));
788 CALL_End(GET_DISPATCH(), ());
796 * Called from glDrawArrays when in immediate mode (not display list mode).
798 static void GLAPIENTRY
799 vbo_exec_DrawArrays(GLenum mode
, GLint start
, GLsizei count
)
801 GET_CURRENT_CONTEXT(ctx
);
803 if (MESA_VERBOSE
& VERBOSE_DRAW
)
804 _mesa_debug(ctx
, "glDrawArrays(%s, %d, %d)\n",
805 _mesa_lookup_enum_by_nr(mode
), start
, count
);
807 if (!_mesa_validate_DrawArrays( ctx
, mode
, start
, count
))
811 check_draw_arrays_data(ctx
, start
, count
);
813 vbo_draw_arrays(ctx
, mode
, start
, count
, 1, 0);
816 print_draw_arrays(ctx
, mode
, start
, count
);
821 * Called from glDrawArraysInstanced when in immediate mode (not
822 * display list mode).
824 static void GLAPIENTRY
825 vbo_exec_DrawArraysInstanced(GLenum mode
, GLint start
, GLsizei count
,
826 GLsizei numInstances
)
828 GET_CURRENT_CONTEXT(ctx
);
830 if (MESA_VERBOSE
& VERBOSE_DRAW
)
831 _mesa_debug(ctx
, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
832 _mesa_lookup_enum_by_nr(mode
), start
, count
, numInstances
);
834 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, start
, count
, numInstances
))
838 check_draw_arrays_data(ctx
, start
, count
);
840 vbo_draw_arrays(ctx
, mode
, start
, count
, numInstances
, 0);
843 print_draw_arrays(ctx
, mode
, start
, count
);
848 * Called from glDrawArraysInstancedBaseInstance when in immediate mode.
850 static void GLAPIENTRY
851 vbo_exec_DrawArraysInstancedBaseInstance(GLenum mode
, GLint first
, GLsizei count
,
852 GLsizei numInstances
, GLuint baseInstance
)
854 GET_CURRENT_CONTEXT(ctx
);
856 if (MESA_VERBOSE
& VERBOSE_DRAW
)
857 _mesa_debug(ctx
, "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n",
858 _mesa_lookup_enum_by_nr(mode
), first
, count
,
859 numInstances
, baseInstance
);
861 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, first
, count
,
866 check_draw_arrays_data(ctx
, first
, count
);
868 vbo_draw_arrays(ctx
, mode
, first
, count
, numInstances
, baseInstance
);
871 print_draw_arrays(ctx
, mode
, first
, count
);
877 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
882 dump_element_buffer(struct gl_context
*ctx
, GLenum type
)
885 ctx
->Driver
.MapBufferRange(ctx
, 0,
886 ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Size
,
888 ctx
->Array
.ArrayObj
->ElementArrayBufferObj
);
890 case GL_UNSIGNED_BYTE
:
892 const GLubyte
*us
= (const GLubyte
*) map
;
894 for (i
= 0; i
< ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Size
; i
++) {
895 printf("%02x ", us
[i
]);
902 case GL_UNSIGNED_SHORT
:
904 const GLushort
*us
= (const GLushort
*) map
;
906 for (i
= 0; i
< ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Size
/ 2; i
++) {
907 printf("%04x ", us
[i
]);
914 case GL_UNSIGNED_INT
:
916 const GLuint
*us
= (const GLuint
*) map
;
918 for (i
= 0; i
< ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Size
/ 4; i
++) {
919 printf("%08x ", us
[i
]);
930 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.ArrayObj
->ElementArrayBufferObj
);
936 * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
937 * Do the rendering for a glDrawElements or glDrawRangeElements call after
938 * we've validated buffer bounds, etc.
941 vbo_validated_drawrangeelements(struct gl_context
*ctx
, GLenum mode
,
942 GLboolean index_bounds_valid
,
943 GLuint start
, GLuint end
,
944 GLsizei count
, GLenum type
,
945 const GLvoid
*indices
,
946 GLint basevertex
, GLuint numInstances
,
949 struct vbo_context
*vbo
= vbo_context(ctx
);
950 struct vbo_exec_context
*exec
= &vbo
->exec
;
951 struct _mesa_index_buffer ib
;
952 struct _mesa_prim prim
[1];
954 vbo_bind_arrays(ctx
);
958 ib
.obj
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
967 prim
[0].count
= count
;
969 prim
[0].is_indirect
= 0;
970 prim
[0].basevertex
= basevertex
;
971 prim
[0].num_instances
= numInstances
;
972 prim
[0].base_instance
= baseInstance
;
974 /* Need to give special consideration to rendering a range of
975 * indices starting somewhere above zero. Typically the
976 * application is issuing multiple DrawRangeElements() to draw
977 * successive primitives layed out linearly in the vertex arrays.
978 * Unless the vertex arrays are all in a VBO (or locked as with
979 * CVA), the OpenGL semantics imply that we need to re-read or
980 * re-upload the vertex data on each draw call.
982 * In the case of hardware tnl, we want to avoid starting the
983 * upload at zero, as it will mean every draw call uploads an
984 * increasing amount of not-used vertex data. Worse - in the
985 * software tnl module, all those vertices might be transformed and
986 * lit but never rendered.
988 * If we just upload or transform the vertices in start..end,
989 * however, the indices will be incorrect.
991 * At this level, we don't know exactly what the requirements of
992 * the backend are going to be, though it will likely boil down to
995 * 1) Do nothing, everything is in a VBO and is processed once
998 * 2) Adjust the indices and vertex arrays so that start becomes
1001 * Rather than doing anything here, I'll provide a helper function
1002 * for the latter case elsewhere.
1005 check_buffers_are_unmapped(exec
->array
.inputs
);
1006 vbo_handle_primitive_restart(ctx
, prim
, 1, &ib
,
1007 index_bounds_valid
, start
, end
);
1009 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1016 * Called by glDrawRangeElementsBaseVertex() in immediate mode.
1018 static void GLAPIENTRY
1019 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
,
1020 GLuint start
, GLuint end
,
1021 GLsizei count
, GLenum type
,
1022 const GLvoid
*indices
,
1025 static GLuint warnCount
= 0;
1026 GLboolean index_bounds_valid
= GL_TRUE
;
1028 GET_CURRENT_CONTEXT(ctx
);
1030 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1032 "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
1033 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
1034 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
1036 if (!_mesa_validate_DrawRangeElements( ctx
, mode
, start
, end
, count
,
1037 type
, indices
, basevertex
))
1040 if (ctx
->Const
.CheckArrayBounds
) {
1041 /* _MaxElement was computed, so we can use it.
1042 * This path is used for drivers which need strict bounds checking.
1044 max_element
= ctx
->Array
.ArrayObj
->_MaxElement
;
1047 /* Generally, hardware drivers don't need to know the buffer bounds
1048 * if all vertex attributes are in VBOs.
1049 * However, if none of vertex attributes are in VBOs, _MaxElement
1050 * is always set to some random big number anyway, so bounds checking
1051 * is mostly useless.
1053 * This is only useful to catch invalid values in the "end" parameter
1056 max_element
= 2 * 1000 * 1000 * 1000; /* just a big number */
1059 if ((int) end
+ basevertex
< 0 ||
1060 start
+ basevertex
>= max_element
) {
1061 /* The application requested we draw using a range of indices that's
1062 * outside the bounds of the current VBO. This is invalid and appears
1063 * to give undefined results. The safest thing to do is to simply
1064 * ignore the range, in case the application botched their range tracking
1065 * but did provide valid indices. Also issue a warning indicating that
1066 * the application is broken.
1068 if (warnCount
++ < 10) {
1069 _mesa_warning(ctx
, "glDrawRangeElements(start %u, end %u, "
1070 "basevertex %d, count %d, type 0x%x, indices=%p):\n"
1071 "\trange is outside VBO bounds (max=%u); ignoring.\n"
1072 "\tThis should be fixed in the application.",
1073 start
, end
, basevertex
, count
, type
, indices
,
1076 index_bounds_valid
= GL_FALSE
;
1079 /* NOTE: It's important that 'end' is a reasonable value.
1080 * in _tnl_draw_prims(), we use end to determine how many vertices
1081 * to transform. If it's too large, we can unnecessarily split prims
1082 * or we can read/write out of memory in several different places!
1085 /* Catch/fix some potential user errors */
1086 if (type
== GL_UNSIGNED_BYTE
) {
1087 start
= MIN2(start
, 0xff);
1088 end
= MIN2(end
, 0xff);
1090 else if (type
== GL_UNSIGNED_SHORT
) {
1091 start
= MIN2(start
, 0xffff);
1092 end
= MIN2(end
, 0xffff);
1096 printf("glDraw[Range]Elements{,BaseVertex}"
1097 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
1099 start
, end
, type
, count
,
1100 ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
,
1104 if ((int) start
+ basevertex
< 0 ||
1105 end
+ basevertex
>= max_element
)
1106 index_bounds_valid
= GL_FALSE
;
1109 check_draw_elements_data(ctx
, count
, type
, indices
);
1111 (void) check_draw_elements_data
;
1114 vbo_validated_drawrangeelements(ctx
, mode
, index_bounds_valid
, start
, end
,
1115 count
, type
, indices
, basevertex
, 1, 0);
1120 * Called by glDrawRangeElements() in immediate mode.
1122 static void GLAPIENTRY
1123 vbo_exec_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
,
1124 GLsizei count
, GLenum type
, const GLvoid
*indices
)
1126 if (MESA_VERBOSE
& VERBOSE_DRAW
) {
1127 GET_CURRENT_CONTEXT(ctx
);
1129 "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
1130 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
1131 _mesa_lookup_enum_by_nr(type
), indices
);
1134 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1140 * Called by glDrawElements() in immediate mode.
1142 static void GLAPIENTRY
1143 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1144 const GLvoid
*indices
)
1146 GET_CURRENT_CONTEXT(ctx
);
1148 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1149 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1150 _mesa_lookup_enum_by_nr(mode
), count
,
1151 _mesa_lookup_enum_by_nr(type
), indices
);
1153 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
, 0 ))
1156 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1157 count
, type
, indices
, 0, 1, 0);
1162 * Called by glDrawElementsBaseVertex() in immediate mode.
1164 static void GLAPIENTRY
1165 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1166 const GLvoid
*indices
, GLint basevertex
)
1168 GET_CURRENT_CONTEXT(ctx
);
1170 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1171 _mesa_debug(ctx
, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
1172 _mesa_lookup_enum_by_nr(mode
), count
,
1173 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
1175 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
,
1179 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1180 count
, type
, indices
, basevertex
, 1, 0);
1185 * Called by glDrawElementsInstanced() in immediate mode.
1187 static void GLAPIENTRY
1188 vbo_exec_DrawElementsInstanced(GLenum mode
, GLsizei count
, GLenum type
,
1189 const GLvoid
*indices
, GLsizei numInstances
)
1191 GET_CURRENT_CONTEXT(ctx
);
1193 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1194 _mesa_debug(ctx
, "glDrawElementsInstanced(%s, %d, %s, %p, %d)\n",
1195 _mesa_lookup_enum_by_nr(mode
), count
,
1196 _mesa_lookup_enum_by_nr(type
), indices
, numInstances
);
1198 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1202 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1203 count
, type
, indices
, 0, numInstances
, 0);
1208 * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
1210 static void GLAPIENTRY
1211 vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1212 const GLvoid
*indices
, GLsizei numInstances
,
1215 GET_CURRENT_CONTEXT(ctx
);
1217 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1218 _mesa_debug(ctx
, "glDrawElementsInstancedBaseVertex(%s, %d, %s, %p, %d; %d)\n",
1219 _mesa_lookup_enum_by_nr(mode
), count
,
1220 _mesa_lookup_enum_by_nr(type
), indices
,
1221 numInstances
, basevertex
);
1223 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1224 numInstances
, basevertex
))
1227 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1228 count
, type
, indices
, basevertex
, numInstances
, 0);
1233 * Called by glDrawElementsInstancedBaseInstance() in immediate mode.
1235 static void GLAPIENTRY
1236 vbo_exec_DrawElementsInstancedBaseInstance(GLenum mode
, GLsizei count
, GLenum type
,
1237 const GLvoid
*indices
, GLsizei numInstances
,
1238 GLuint baseInstance
)
1240 GET_CURRENT_CONTEXT(ctx
);
1242 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1243 _mesa_debug(ctx
, "glDrawElementsInstancedBaseInstance(%s, %d, %s, %p, %d, %d)\n",
1244 _mesa_lookup_enum_by_nr(mode
), count
,
1245 _mesa_lookup_enum_by_nr(type
), indices
,
1246 numInstances
, baseInstance
);
1248 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1252 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1253 count
, type
, indices
, 0, numInstances
,
1259 * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode.
1261 static void GLAPIENTRY
1262 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode
, GLsizei count
, GLenum type
,
1263 const GLvoid
*indices
, GLsizei numInstances
,
1264 GLint basevertex
, GLuint baseInstance
)
1266 GET_CURRENT_CONTEXT(ctx
);
1268 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1269 _mesa_debug(ctx
, "glDrawElementsInstancedBaseVertexBaseInstance(%s, %d, %s, %p, %d, %d, %d)\n",
1270 _mesa_lookup_enum_by_nr(mode
), count
,
1271 _mesa_lookup_enum_by_nr(type
), indices
,
1272 numInstances
, basevertex
, baseInstance
);
1274 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
1275 numInstances
, basevertex
))
1278 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
1279 count
, type
, indices
, basevertex
, numInstances
,
1285 * Inner support for both _mesa_MultiDrawElements() and
1286 * _mesa_MultiDrawRangeElements().
1287 * This does the actual rendering after we've checked array indexes, etc.
1290 vbo_validated_multidrawelements(struct gl_context
*ctx
, GLenum mode
,
1291 const GLsizei
*count
, GLenum type
,
1292 const GLvoid
* const *indices
,
1294 const GLint
*basevertex
)
1296 struct vbo_context
*vbo
= vbo_context(ctx
);
1297 struct vbo_exec_context
*exec
= &vbo
->exec
;
1298 struct _mesa_index_buffer ib
;
1299 struct _mesa_prim
*prim
;
1300 unsigned int index_type_size
= vbo_sizeof_ib_type(type
);
1301 uintptr_t min_index_ptr
, max_index_ptr
;
1302 GLboolean fallback
= GL_FALSE
;
1308 prim
= calloc(1, primcount
* sizeof(*prim
));
1310 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
1314 vbo_bind_arrays(ctx
);
1316 min_index_ptr
= (uintptr_t)indices
[0];
1318 for (i
= 0; i
< primcount
; i
++) {
1319 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t)indices
[i
]);
1320 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t)indices
[i
] +
1321 index_type_size
* count
[i
]);
1324 /* Check if we can handle this thing as a bunch of index offsets from the
1325 * same index pointer. If we can't, then we have to fall back to doing
1326 * a draw_prims per primitive.
1327 * Check that the difference between each prim's indexes is a multiple of
1328 * the index/element size.
1330 if (index_type_size
!= 1) {
1331 for (i
= 0; i
< primcount
; i
++) {
1332 if ((((uintptr_t)indices
[i
] - min_index_ptr
) % index_type_size
) != 0) {
1339 /* Draw primitives individually if one count is zero, so we can easily skip
1342 for (i
= 0; i
< primcount
; i
++) {
1343 if (count
[i
] == 0) {
1349 /* If the index buffer isn't in a VBO, then treating the application's
1350 * subranges of the index buffer as one large index buffer may lead to
1351 * us reading unmapped memory.
1353 if (!_mesa_is_bufferobj(ctx
->Array
.ArrayObj
->ElementArrayBufferObj
))
1357 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
1359 ib
.obj
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
1360 ib
.ptr
= (void *)min_index_ptr
;
1362 for (i
= 0; i
< primcount
; i
++) {
1363 prim
[i
].begin
= (i
== 0);
1364 prim
[i
].end
= (i
== primcount
- 1);
1367 prim
[i
].mode
= mode
;
1368 prim
[i
].start
= ((uintptr_t)indices
[i
] - min_index_ptr
) / index_type_size
;
1369 prim
[i
].count
= count
[i
];
1370 prim
[i
].indexed
= 1;
1371 prim
[i
].num_instances
= 1;
1372 prim
[i
].base_instance
= 0;
1373 prim
[i
].is_indirect
= 0;
1374 if (basevertex
!= NULL
)
1375 prim
[i
].basevertex
= basevertex
[i
];
1377 prim
[i
].basevertex
= 0;
1380 check_buffers_are_unmapped(exec
->array
.inputs
);
1381 vbo_handle_primitive_restart(ctx
, prim
, primcount
, &ib
,
1384 /* render one prim at a time */
1385 for (i
= 0; i
< primcount
; i
++) {
1388 ib
.count
= count
[i
];
1390 ib
.obj
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
1391 ib
.ptr
= indices
[i
];
1397 prim
[0].mode
= mode
;
1399 prim
[0].count
= count
[i
];
1400 prim
[0].indexed
= 1;
1401 prim
[0].num_instances
= 1;
1402 prim
[0].base_instance
= 0;
1403 prim
[0].is_indirect
= 0;
1404 if (basevertex
!= NULL
)
1405 prim
[0].basevertex
= basevertex
[i
];
1407 prim
[0].basevertex
= 0;
1409 check_buffers_are_unmapped(exec
->array
.inputs
);
1410 vbo_handle_primitive_restart(ctx
, prim
, 1, &ib
,
1417 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1423 static void GLAPIENTRY
1424 vbo_exec_MultiDrawElements(GLenum mode
,
1425 const GLsizei
*count
, GLenum type
,
1426 const GLvoid
* const *indices
,
1429 GET_CURRENT_CONTEXT(ctx
);
1431 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1435 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1440 static void GLAPIENTRY
1441 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
1442 const GLsizei
*count
, GLenum type
,
1443 const GLvoid
* const *indices
,
1445 const GLsizei
*basevertex
)
1447 GET_CURRENT_CONTEXT(ctx
);
1449 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1450 primcount
, basevertex
))
1453 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1458 vbo_draw_transform_feedback(struct gl_context
*ctx
, GLenum mode
,
1459 struct gl_transform_feedback_object
*obj
,
1460 GLuint stream
, GLuint numInstances
)
1462 struct vbo_context
*vbo
= vbo_context(ctx
);
1463 struct vbo_exec_context
*exec
= &vbo
->exec
;
1464 struct _mesa_prim prim
[2];
1466 if (!_mesa_validate_DrawTransformFeedback(ctx
, mode
, obj
, stream
,
1471 if (ctx
->Driver
.GetTransformFeedbackVertexCount
&&
1472 (ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
||
1473 (ctx
->Const
.PrimitiveRestartInSoftware
&&
1474 ctx
->Array
._PrimitiveRestart
) ||
1475 !vbo_all_varyings_in_vbos(exec
->array
.inputs
))) {
1476 GLsizei n
= ctx
->Driver
.GetTransformFeedbackVertexCount(ctx
, obj
, stream
);
1477 vbo_draw_arrays(ctx
, mode
, 0, n
, numInstances
, 0);
1481 vbo_bind_arrays(ctx
);
1483 /* init most fields to zero */
1484 memset(prim
, 0, sizeof(prim
));
1487 prim
[0].mode
= mode
;
1488 prim
[0].num_instances
= numInstances
;
1489 prim
[0].base_instance
= 0;
1490 prim
[0].is_indirect
= 0;
1492 /* Maybe we should do some primitive splitting for primitive restart
1493 * (like in DrawArrays), but we have no way to know how many vertices
1494 * will be rendered. */
1496 check_buffers_are_unmapped(exec
->array
.inputs
);
1497 vbo
->draw_prims(ctx
, prim
, 1, NULL
,
1498 GL_TRUE
, 0, 0, obj
, NULL
);
1500 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1506 * Like DrawArrays, but take the count from a transform feedback object.
1507 * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.
1508 * \param name the transform feedback object
1509 * User still has to setup of the vertex attribute info with
1510 * glVertexPointer, glColorPointer, etc.
1511 * Part of GL_ARB_transform_feedback2.
1513 static void GLAPIENTRY
1514 vbo_exec_DrawTransformFeedback(GLenum mode
, GLuint name
)
1516 GET_CURRENT_CONTEXT(ctx
);
1517 struct gl_transform_feedback_object
*obj
=
1518 _mesa_lookup_transform_feedback_object(ctx
, name
);
1520 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1521 _mesa_debug(ctx
, "glDrawTransformFeedback(%s, %d)\n",
1522 _mesa_lookup_enum_by_nr(mode
), name
);
1524 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, 1);
1527 static void GLAPIENTRY
1528 vbo_exec_DrawTransformFeedbackStream(GLenum mode
, GLuint name
, GLuint stream
)
1530 GET_CURRENT_CONTEXT(ctx
);
1531 struct gl_transform_feedback_object
*obj
=
1532 _mesa_lookup_transform_feedback_object(ctx
, name
);
1534 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1535 _mesa_debug(ctx
, "glDrawTransformFeedbackStream(%s, %u, %u)\n",
1536 _mesa_lookup_enum_by_nr(mode
), name
, stream
);
1538 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, 1);
1541 static void GLAPIENTRY
1542 vbo_exec_DrawTransformFeedbackInstanced(GLenum mode
, GLuint name
,
1545 GET_CURRENT_CONTEXT(ctx
);
1546 struct gl_transform_feedback_object
*obj
=
1547 _mesa_lookup_transform_feedback_object(ctx
, name
);
1549 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1550 _mesa_debug(ctx
, "glDrawTransformFeedbackInstanced(%s, %d)\n",
1551 _mesa_lookup_enum_by_nr(mode
), name
);
1553 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, primcount
);
1556 static void GLAPIENTRY
1557 vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum mode
, GLuint name
,
1558 GLuint stream
, GLsizei primcount
)
1560 GET_CURRENT_CONTEXT(ctx
);
1561 struct gl_transform_feedback_object
*obj
=
1562 _mesa_lookup_transform_feedback_object(ctx
, name
);
1564 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1565 _mesa_debug(ctx
, "glDrawTransformFeedbackStreamInstanced"
1566 "(%s, %u, %u, %i)\n",
1567 _mesa_lookup_enum_by_nr(mode
), name
, stream
, primcount
);
1569 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, primcount
);
1573 vbo_validated_drawarraysindirect(struct gl_context
*ctx
,
1574 GLenum mode
, const GLvoid
*indirect
)
1576 struct vbo_context
*vbo
= vbo_context(ctx
);
1577 struct vbo_exec_context
*exec
= &vbo
->exec
;
1578 struct _mesa_prim prim
[1];
1580 vbo_bind_arrays(ctx
);
1582 memset(prim
, 0, sizeof(prim
));
1585 prim
[0].mode
= mode
;
1586 prim
[0].is_indirect
= 1;
1587 prim
[0].indirect_offset
= (GLsizeiptr
)indirect
;
1589 /* NOTE: We do NOT want to handle primitive restart here, nor perform any
1590 * other checks that require knowledge of the values in the command buffer.
1591 * That would defeat the whole purpose of this function.
1594 check_buffers_are_unmapped(exec
->array
.inputs
);
1595 vbo
->draw_prims(ctx
, prim
, 1,
1596 NULL
, GL_TRUE
, 0, ~0,
1598 ctx
->DrawIndirectBuffer
);
1600 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1605 vbo_validated_multidrawarraysindirect(struct gl_context
*ctx
,
1607 const GLvoid
*indirect
,
1608 GLsizei primcount
, GLsizei stride
)
1610 struct vbo_context
*vbo
= vbo_context(ctx
);
1611 struct vbo_exec_context
*exec
= &vbo
->exec
;
1612 struct _mesa_prim
*prim
;
1614 GLsizeiptr offset
= (GLsizeiptr
)indirect
;
1618 prim
= calloc(primcount
, sizeof(*prim
));
1620 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawArraysIndirect");
1624 vbo_bind_arrays(ctx
);
1627 prim
[primcount
- 1].end
= 1;
1628 for (i
= 0; i
< primcount
; ++i
, offset
+= stride
) {
1629 prim
[i
].mode
= mode
;
1630 prim
[i
].indirect_offset
= offset
;
1631 prim
[i
].is_indirect
= 1;
1634 check_buffers_are_unmapped(exec
->array
.inputs
);
1635 vbo
->draw_prims(ctx
, prim
, primcount
,
1636 NULL
, GL_TRUE
, 0, ~0,
1638 ctx
->DrawIndirectBuffer
);
1642 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1647 vbo_validated_drawelementsindirect(struct gl_context
*ctx
,
1648 GLenum mode
, GLenum type
,
1649 const GLvoid
*indirect
)
1651 struct vbo_context
*vbo
= vbo_context(ctx
);
1652 struct vbo_exec_context
*exec
= &vbo
->exec
;
1653 struct _mesa_index_buffer ib
;
1654 struct _mesa_prim prim
[1];
1656 vbo_bind_arrays(ctx
);
1658 ib
.count
= 0; /* unknown */
1660 ib
.obj
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
1663 memset(prim
, 0, sizeof(prim
));
1666 prim
[0].mode
= mode
;
1667 prim
[0].indexed
= 1;
1668 prim
[0].indirect_offset
= (GLsizeiptr
)indirect
;
1669 prim
[0].is_indirect
= 1;
1671 check_buffers_are_unmapped(exec
->array
.inputs
);
1672 vbo
->draw_prims(ctx
, prim
, 1,
1673 &ib
, GL_TRUE
, 0, ~0,
1675 ctx
->DrawIndirectBuffer
);
1677 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1682 vbo_validated_multidrawelementsindirect(struct gl_context
*ctx
,
1683 GLenum mode
, GLenum type
,
1684 const GLvoid
*indirect
,
1685 GLsizei primcount
, GLsizei stride
)
1687 struct vbo_context
*vbo
= vbo_context(ctx
);
1688 struct vbo_exec_context
*exec
= &vbo
->exec
;
1689 struct _mesa_index_buffer ib
;
1690 struct _mesa_prim
*prim
;
1692 GLsizeiptr offset
= (GLsizeiptr
)indirect
;
1696 prim
= calloc(primcount
, sizeof(*prim
));
1698 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElementsIndirect");
1702 vbo_bind_arrays(ctx
);
1704 /* NOTE: ElementArrayBufferObj is guaranteed to be a VBO. */
1706 ib
.count
= 0; /* unknown */
1708 ib
.obj
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
;
1712 prim
[primcount
- 1].end
= 1;
1713 for (i
= 0; i
< primcount
; ++i
, offset
+= stride
) {
1714 prim
[i
].mode
= mode
;
1715 prim
[i
].indexed
= 1;
1716 prim
[i
].indirect_offset
= offset
;
1717 prim
[i
].is_indirect
= 1;
1720 check_buffers_are_unmapped(exec
->array
.inputs
);
1721 vbo
->draw_prims(ctx
, prim
, primcount
,
1722 &ib
, GL_TRUE
, 0, ~0,
1724 ctx
->DrawIndirectBuffer
);
1728 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1733 * Like [Multi]DrawArrays/Elements, but they take most arguments from
1736 static void GLAPIENTRY
1737 vbo_exec_DrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
)
1739 GET_CURRENT_CONTEXT(ctx
);
1741 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1742 _mesa_debug(ctx
, "glDrawArraysIndirect(%s, %p)\n",
1743 _mesa_lookup_enum_by_nr(mode
), indirect
);
1745 if (!_mesa_validate_DrawArraysIndirect(ctx
, mode
, indirect
))
1748 vbo_validated_drawarraysindirect(ctx
, mode
, indirect
);
1751 static void GLAPIENTRY
1752 vbo_exec_DrawElementsIndirect(GLenum mode
, GLenum type
,
1753 const GLvoid
*indirect
)
1755 GET_CURRENT_CONTEXT(ctx
);
1757 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1758 _mesa_debug(ctx
, "glDrawElementsIndirect(%s, %s, %p)\n",
1759 _mesa_lookup_enum_by_nr(mode
),
1760 _mesa_lookup_enum_by_nr(type
), indirect
);
1762 if (!_mesa_validate_DrawElementsIndirect(ctx
, mode
, type
, indirect
))
1765 vbo_validated_drawelementsindirect(ctx
, mode
, type
, indirect
);
1768 static void GLAPIENTRY
1769 vbo_exec_MultiDrawArraysIndirect(GLenum mode
,
1770 const GLvoid
*indirect
,
1771 GLsizei primcount
, GLsizei stride
)
1773 GET_CURRENT_CONTEXT(ctx
);
1775 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1776 _mesa_debug(ctx
, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n",
1777 _mesa_lookup_enum_by_nr(mode
), indirect
, primcount
, stride
);
1779 /* If <stride> is zero, the array elements are treated as tightly packed. */
1781 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1783 if (!_mesa_validate_MultiDrawArraysIndirect(ctx
, mode
,
1788 vbo_validated_multidrawarraysindirect(ctx
, mode
,
1793 static void GLAPIENTRY
1794 vbo_exec_MultiDrawElementsIndirect(GLenum mode
, GLenum type
,
1795 const GLvoid
*indirect
,
1796 GLsizei primcount
, GLsizei stride
)
1798 GET_CURRENT_CONTEXT(ctx
);
1800 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1801 _mesa_debug(ctx
, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n",
1802 _mesa_lookup_enum_by_nr(mode
),
1803 _mesa_lookup_enum_by_nr(type
), indirect
, primcount
, stride
);
1805 /* If <stride> is zero, the array elements are treated as tightly packed. */
1807 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1809 if (!_mesa_validate_MultiDrawElementsIndirect(ctx
, mode
, type
,
1814 vbo_validated_multidrawelementsindirect(ctx
, mode
, type
,
1820 * Initialize the dispatch table with the VBO functions for drawing.
1823 vbo_initialize_exec_dispatch(const struct gl_context
*ctx
,
1824 struct _glapi_table
*exec
)
1826 SET_DrawArrays(exec
, vbo_exec_DrawArrays
);
1827 SET_DrawElements(exec
, vbo_exec_DrawElements
);
1829 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1830 SET_DrawRangeElements(exec
, vbo_exec_DrawRangeElements
);
1833 SET_MultiDrawElementsEXT(exec
, vbo_exec_MultiDrawElements
);
1835 if (ctx
->API
== API_OPENGL_COMPAT
) {
1836 SET_Rectf(exec
, vbo_exec_Rectf
);
1837 SET_EvalMesh1(exec
, vbo_exec_EvalMesh1
);
1838 SET_EvalMesh2(exec
, vbo_exec_EvalMesh2
);
1841 if (_mesa_is_desktop_gl(ctx
)) {
1842 SET_DrawElementsBaseVertex(exec
, vbo_exec_DrawElementsBaseVertex
);
1843 SET_DrawRangeElementsBaseVertex(exec
, vbo_exec_DrawRangeElementsBaseVertex
);
1844 SET_MultiDrawElementsBaseVertex(exec
, vbo_exec_MultiDrawElementsBaseVertex
);
1845 SET_DrawArraysInstancedBaseInstance(exec
, vbo_exec_DrawArraysInstancedBaseInstance
);
1846 SET_DrawElementsInstancedBaseInstance(exec
, vbo_exec_DrawElementsInstancedBaseInstance
);
1847 SET_DrawElementsInstancedBaseVertex(exec
, vbo_exec_DrawElementsInstancedBaseVertex
);
1848 SET_DrawElementsInstancedBaseVertexBaseInstance(exec
, vbo_exec_DrawElementsInstancedBaseVertexBaseInstance
);
1851 if (ctx
->API
== API_OPENGL_CORE
) {
1852 SET_DrawArraysIndirect(exec
, vbo_exec_DrawArraysIndirect
);
1853 SET_DrawElementsIndirect(exec
, vbo_exec_DrawElementsIndirect
);
1854 SET_MultiDrawArraysIndirect(exec
, vbo_exec_MultiDrawArraysIndirect
);
1855 SET_MultiDrawElementsIndirect(exec
, vbo_exec_MultiDrawElementsIndirect
);
1858 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1859 SET_DrawArraysInstancedARB(exec
, vbo_exec_DrawArraysInstanced
);
1860 SET_DrawElementsInstancedARB(exec
, vbo_exec_DrawElementsInstanced
);
1863 if (_mesa_is_desktop_gl(ctx
)) {
1864 SET_DrawTransformFeedback(exec
, vbo_exec_DrawTransformFeedback
);
1865 SET_DrawTransformFeedbackStream(exec
, vbo_exec_DrawTransformFeedbackStream
);
1866 SET_DrawTransformFeedbackInstanced(exec
, vbo_exec_DrawTransformFeedbackInstanced
);
1867 SET_DrawTransformFeedbackStreamInstanced(exec
, vbo_exec_DrawTransformFeedbackStreamInstanced
);
1874 * The following functions are only used for OpenGL ES 1/2 support.
1875 * And some aren't even supported (yet) in ES 1/2.
1880 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
1882 vbo_exec_DrawArrays(mode
, first
, count
);
1887 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1888 const GLvoid
*indices
)
1890 vbo_exec_DrawElements(mode
, count
, type
, indices
);
1895 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1896 const GLvoid
*indices
, GLint basevertex
)
1898 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
1903 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
1904 GLenum type
, const GLvoid
*indices
)
1906 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
1911 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
1912 GLsizei count
, GLenum type
,
1913 const GLvoid
*indices
, GLint basevertex
)
1915 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1916 indices
, basevertex
);
1921 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
1922 const GLvoid
**indices
, GLsizei primcount
)
1924 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
1929 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
1930 const GLsizei
*count
, GLenum type
,
1931 const GLvoid
**indices
, GLsizei primcount
,
1932 const GLint
*basevertex
)
1934 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
1935 primcount
, basevertex
);
1939 _mesa_DrawTransformFeedback(GLenum mode
, GLuint name
)
1941 vbo_exec_DrawTransformFeedback(mode
, name
);