1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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 TUNGSTEN GRAPHICS 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/api_noop.h"
34 #include "main/varray.h"
35 #include "main/bufferobj.h"
36 #include "main/macros.h"
37 #include "glapi/dispatch.h"
39 #include "vbo_context.h"
43 * Compute min and max elements for glDraw[Range]Elements() calls.
46 vbo_get_minmax_index(GLcontext
*ctx
,
47 const struct _mesa_prim
*prim
,
48 const struct _mesa_index_buffer
*ib
,
49 GLuint
*min_index
, GLuint
*max_index
)
52 GLsizei count
= prim
->count
;
55 if (_mesa_is_bufferobj(ib
->obj
)) {
56 const GLvoid
*map
= ctx
->Driver
.MapBuffer(ctx
,
57 GL_ELEMENT_ARRAY_BUFFER_ARB
,
60 indices
= ADD_POINTERS(map
, ib
->ptr
);
66 case GL_UNSIGNED_INT
: {
67 const GLuint
*ui_indices
= (const GLuint
*)indices
;
68 GLuint max_ui
= ui_indices
[count
-1];
69 GLuint min_ui
= ui_indices
[0];
70 for (i
= 0; i
< count
; i
++) {
71 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
72 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
78 case GL_UNSIGNED_SHORT
: {
79 const GLushort
*us_indices
= (const GLushort
*)indices
;
80 GLuint max_us
= us_indices
[count
-1];
81 GLuint min_us
= us_indices
[0];
82 for (i
= 0; i
< count
; i
++) {
83 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
84 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
90 case GL_UNSIGNED_BYTE
: {
91 const GLubyte
*ub_indices
= (const GLubyte
*)indices
;
92 GLuint max_ub
= ub_indices
[count
-1];
93 GLuint min_ub
= ub_indices
[0];
94 for (i
= 0; i
< count
; i
++) {
95 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
96 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
107 if (_mesa_is_bufferobj(ib
->obj
)) {
108 ctx
->Driver
.UnmapBuffer(ctx
,
109 GL_ELEMENT_ARRAY_BUFFER_ARB
,
116 * Check that element 'j' of the array has reasonable data.
120 check_array_data(GLcontext
*ctx
, struct gl_client_array
*array
,
121 GLuint attrib
, GLuint j
)
123 if (array
->Enabled
) {
124 const void *data
= array
->Ptr
;
125 if (_mesa_is_bufferobj(array
->BufferObj
)) {
126 if (!array
->BufferObj
->Pointer
) {
127 /* need to map now */
128 array
->BufferObj
->Pointer
= ctx
->Driver
.MapBuffer(ctx
,
133 data
= ADD_POINTERS(data
, array
->BufferObj
->Pointer
);
135 switch (array
->Type
) {
138 GLfloat
*f
= (GLfloat
*) ((GLubyte
*) data
+ array
->StrideB
* j
);
140 for (k
= 0; k
< array
->Size
; k
++) {
141 if (IS_INF_OR_NAN(f
[k
]) ||
142 f
[k
] >= 1.0e20
|| f
[k
] <= -1.0e10
) {
143 _mesa_printf("Bad array data:\n");
144 _mesa_printf(" Element[%u].%u = %f\n", j
, k
, f
[k
]);
145 _mesa_printf(" Array %u at %p\n", attrib
, (void* ) array
);
146 _mesa_printf(" Type 0x%x, Size %d, Stride %d\n",
147 array
->Type
, array
->Size
, array
->Stride
);
148 _mesa_printf(" Address/offset %p in Buffer Object %u\n",
149 array
->Ptr
, array
->BufferObj
->Name
);
150 f
[k
] = 1.0; /* XXX replace the bad value! */
152 //assert(!IS_INF_OR_NAN(f[k]));
164 * Unmap the buffer object referenced by given array, if mapped.
167 unmap_array_buffer(GLcontext
*ctx
, struct gl_client_array
*array
)
169 if (array
->Enabled
&&
170 _mesa_is_bufferobj(array
->BufferObj
) &&
171 _mesa_bufferobj_mapped(array
->BufferObj
)) {
172 ctx
->Driver
.UnmapBuffer(ctx
,
180 * Examine the array's data for NaNs, etc.
183 check_draw_elements_data(GLcontext
*ctx
, GLsizei count
, GLenum elemType
,
184 const void *elements
, GLint basevertex
)
186 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
190 if (_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
)) {
191 elemMap
= ctx
->Driver
.MapBuffer(ctx
,
192 GL_ELEMENT_ARRAY_BUFFER_ARB
,
194 ctx
->Array
.ElementArrayBufferObj
);
195 elements
= ADD_POINTERS(elements
, elemMap
);
198 for (i
= 0; i
< count
; i
++) {
203 case GL_UNSIGNED_BYTE
:
204 j
= ((const GLubyte
*) elements
)[i
];
206 case GL_UNSIGNED_SHORT
:
207 j
= ((const GLushort
*) elements
)[i
];
209 case GL_UNSIGNED_INT
:
210 j
= ((const GLuint
*) elements
)[i
];
216 /* check element j of each enabled array */
217 check_array_data(ctx
, &arrayObj
->Vertex
, VERT_ATTRIB_POS
, j
);
218 check_array_data(ctx
, &arrayObj
->Normal
, VERT_ATTRIB_NORMAL
, j
);
219 check_array_data(ctx
, &arrayObj
->Color
, VERT_ATTRIB_COLOR0
, j
);
220 check_array_data(ctx
, &arrayObj
->SecondaryColor
, VERT_ATTRIB_COLOR1
, j
);
221 for (k
= 0; k
< Elements(arrayObj
->TexCoord
); k
++) {
222 check_array_data(ctx
, &arrayObj
->TexCoord
[k
], VERT_ATTRIB_TEX0
+ k
, j
);
224 for (k
= 0; k
< Elements(arrayObj
->VertexAttrib
); k
++) {
225 check_array_data(ctx
, &arrayObj
->VertexAttrib
[k
], VERT_ATTRIB_GENERIC0
+ k
, j
);
229 if (_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
)) {
230 ctx
->Driver
.UnmapBuffer(ctx
,
231 GL_ELEMENT_ARRAY_BUFFER_ARB
,
232 ctx
->Array
.ElementArrayBufferObj
);
235 unmap_array_buffer(ctx
, &arrayObj
->Vertex
);
236 unmap_array_buffer(ctx
, &arrayObj
->Normal
);
237 unmap_array_buffer(ctx
, &arrayObj
->Color
);
238 for (k
= 0; k
< Elements(arrayObj
->TexCoord
); k
++) {
239 unmap_array_buffer(ctx
, &arrayObj
->TexCoord
[k
]);
241 for (k
= 0; k
< Elements(arrayObj
->VertexAttrib
); k
++) {
242 unmap_array_buffer(ctx
, &arrayObj
->VertexAttrib
[k
]);
248 * Check array data, looking for NaNs, etc.
251 check_draw_arrays_data(GLcontext
*ctx
, GLint start
, GLsizei count
)
258 * Print info/data for glDrawArrays().
261 print_draw_arrays(GLcontext
*ctx
, struct vbo_exec_context
*exec
,
262 GLenum mode
, GLint start
, GLsizei count
)
266 _mesa_printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
269 for (i
= 0; i
< 32; i
++) {
270 GLuint bufName
= exec
->array
.inputs
[i
]->BufferObj
->Name
;
271 GLint stride
= exec
->array
.inputs
[i
]->Stride
;
272 _mesa_printf("attr %2d: size %d stride %d enabled %d "
273 "ptr %p Bufobj %u\n",
275 exec
->array
.inputs
[i
]->Size
,
277 /*exec->array.inputs[i]->Enabled,*/
278 exec
->array
.legacy_array
[i
]->Enabled
,
279 exec
->array
.inputs
[i
]->Ptr
,
283 struct gl_buffer_object
*buf
= _mesa_lookup_bufferobj(ctx
, bufName
);
284 GLubyte
*p
= ctx
->Driver
.MapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
,
285 GL_READ_ONLY_ARB
, buf
);
286 int offset
= (int) (GLintptr
) exec
->array
.inputs
[i
]->Ptr
;
287 float *f
= (float *) (p
+ offset
);
290 int n
= (count
* stride
) / 4;
293 _mesa_printf(" Data at offset %d:\n", offset
);
294 for (i
= 0; i
< n
; i
++) {
295 _mesa_printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
297 ctx
->Driver
.UnmapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
, buf
);
304 * Just translate the arrayobj into a sane layout.
307 bind_array_obj(GLcontext
*ctx
)
309 struct vbo_context
*vbo
= vbo_context(ctx
);
310 struct vbo_exec_context
*exec
= &vbo
->exec
;
311 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
314 /* TODO: Fix the ArrayObj struct to keep legacy arrays in an array
315 * rather than as individual named arrays. Then this function can
318 exec
->array
.legacy_array
[VERT_ATTRIB_POS
] = &arrayObj
->Vertex
;
319 exec
->array
.legacy_array
[VERT_ATTRIB_WEIGHT
] = &arrayObj
->Weight
;
320 exec
->array
.legacy_array
[VERT_ATTRIB_NORMAL
] = &arrayObj
->Normal
;
321 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR0
] = &arrayObj
->Color
;
322 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR1
] = &arrayObj
->SecondaryColor
;
323 exec
->array
.legacy_array
[VERT_ATTRIB_FOG
] = &arrayObj
->FogCoord
;
324 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR_INDEX
] = &arrayObj
->Index
;
325 if (arrayObj
->PointSize
.Enabled
) {
326 /* this aliases COLOR_INDEX */
327 exec
->array
.legacy_array
[VERT_ATTRIB_POINT_SIZE
] = &arrayObj
->PointSize
;
329 exec
->array
.legacy_array
[VERT_ATTRIB_EDGEFLAG
] = &arrayObj
->EdgeFlag
;
331 for (i
= 0; i
< Elements(arrayObj
->TexCoord
); i
++)
332 exec
->array
.legacy_array
[VERT_ATTRIB_TEX0
+ i
] = &arrayObj
->TexCoord
[i
];
334 for (i
= 0; i
< Elements(arrayObj
->VertexAttrib
); i
++) {
335 assert(i
< Elements(exec
->array
.generic_array
));
336 exec
->array
.generic_array
[i
] = &arrayObj
->VertexAttrib
[i
];
339 exec
->array
.array_obj
= arrayObj
->Name
;
344 recalculate_input_bindings(GLcontext
*ctx
)
346 struct vbo_context
*vbo
= vbo_context(ctx
);
347 struct vbo_exec_context
*exec
= &vbo
->exec
;
348 const struct gl_client_array
**inputs
= &exec
->array
.inputs
[0];
349 GLbitfield const_inputs
= 0x0;
352 exec
->array
.program_mode
= get_program_mode(ctx
);
353 exec
->array
.enabled_flags
= ctx
->Array
.ArrayObj
->_Enabled
;
355 switch (exec
->array
.program_mode
) {
357 /* When no vertex program is active (or the vertex program is generated
358 * from fixed-function state). We put the material values into the
359 * generic slots. This is the only situation where material values
360 * are available as per-vertex attributes.
362 for (i
= 0; i
<= VERT_ATTRIB_TEX7
; i
++) {
363 if (exec
->array
.legacy_array
[i
]->Enabled
)
364 inputs
[i
] = exec
->array
.legacy_array
[i
];
366 inputs
[i
] = &vbo
->legacy_currval
[i
];
367 const_inputs
|= 1 << i
;
371 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
372 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->mat_currval
[i
];
373 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
376 /* Could use just about anything, just to fill in the empty
379 for (i
= MAT_ATTRIB_MAX
; i
< VERT_ATTRIB_MAX
- VERT_ATTRIB_GENERIC0
; i
++) {
380 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->generic_currval
[i
];
381 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
386 /* NV_vertex_program - attribute arrays alias and override
387 * conventional, legacy arrays. No materials, and the generic
390 for (i
= 0; i
<= VERT_ATTRIB_TEX7
; i
++) {
391 if (exec
->array
.generic_array
[i
]->Enabled
)
392 inputs
[i
] = exec
->array
.generic_array
[i
];
393 else if (exec
->array
.legacy_array
[i
]->Enabled
)
394 inputs
[i
] = exec
->array
.legacy_array
[i
];
396 inputs
[i
] = &vbo
->legacy_currval
[i
];
397 const_inputs
|= 1 << i
;
401 /* Could use just about anything, just to fill in the empty
404 for (i
= VERT_ATTRIB_GENERIC0
; i
< VERT_ATTRIB_MAX
; i
++) {
405 inputs
[i
] = &vbo
->generic_currval
[i
- VERT_ATTRIB_GENERIC0
];
406 const_inputs
|= 1 << i
;
411 /* GL_ARB_vertex_program or GLSL vertex shader - Only the generic[0]
412 * attribute array aliases and overrides the legacy position array.
414 * Otherwise, legacy attributes available in the legacy slots,
415 * generic attributes in the generic slots and materials are not
416 * available as per-vertex attributes.
418 if (exec
->array
.generic_array
[0]->Enabled
)
419 inputs
[0] = exec
->array
.generic_array
[0];
420 else if (exec
->array
.legacy_array
[0]->Enabled
)
421 inputs
[0] = exec
->array
.legacy_array
[0];
423 inputs
[0] = &vbo
->legacy_currval
[0];
424 const_inputs
|= 1 << 0;
427 for (i
= 1; i
<= VERT_ATTRIB_TEX7
; i
++) {
428 if (exec
->array
.legacy_array
[i
]->Enabled
)
429 inputs
[i
] = exec
->array
.legacy_array
[i
];
431 inputs
[i
] = &vbo
->legacy_currval
[i
];
432 const_inputs
|= 1 << i
;
436 for (i
= 0; i
< MAX_VERTEX_GENERIC_ATTRIBS
; i
++) {
437 if (exec
->array
.generic_array
[i
]->Enabled
)
438 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = exec
->array
.generic_array
[i
];
440 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->generic_currval
[i
];
441 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
448 _mesa_set_varying_vp_inputs( ctx
, ~const_inputs
);
453 bind_arrays(GLcontext
*ctx
)
456 if (ctx
->Array
.ArrayObj
.Name
!= exec
->array
.array_obj
) {
458 recalculate_input_bindings(ctx
);
460 else if (exec
->array
.program_mode
!= get_program_mode(ctx
) ||
461 exec
->array
.enabled_flags
!= ctx
->Array
.ArrayObj
->_Enabled
) {
463 recalculate_input_bindings(ctx
);
467 recalculate_input_bindings(ctx
);
473 /***********************************************************************
477 static void GLAPIENTRY
478 vbo_exec_DrawArrays(GLenum mode
, GLint start
, GLsizei count
)
480 GET_CURRENT_CONTEXT(ctx
);
481 struct vbo_context
*vbo
= vbo_context(ctx
);
482 struct vbo_exec_context
*exec
= &vbo
->exec
;
483 struct _mesa_prim prim
[1];
485 if (!_mesa_validate_DrawArrays( ctx
, mode
, start
, count
))
488 FLUSH_CURRENT( ctx
, 0 );
491 _mesa_update_state( ctx
);
493 if (!_mesa_valid_to_render(ctx
, "glDrawArrays")) {
498 check_draw_arrays_data(ctx
, start
, count
);
500 (void) check_draw_arrays_data
;
505 /* Again... because we may have changed the bitmask of per-vertex varying
506 * attributes. If we regenerate the fixed-function vertex program now
507 * we may be able to prune down the number of vertex attributes which we
508 * need in the shader.
511 _mesa_update_state( ctx
);
518 prim
[0].start
= start
;
519 prim
[0].count
= count
;
521 prim
[0].basevertex
= 0;
523 vbo
->draw_prims( ctx
, exec
->array
.inputs
, prim
, 1, NULL
,
524 GL_TRUE
, start
, start
+ count
- 1 );
527 print_draw_arrays(ctx
, exec
, mode
, start
, count
);
529 (void) print_draw_arrays
;
535 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
538 dump_element_buffer(GLcontext
*ctx
, GLenum type
)
540 const GLvoid
*map
= ctx
->Driver
.MapBuffer(ctx
,
541 GL_ELEMENT_ARRAY_BUFFER_ARB
,
543 ctx
->Array
.ElementArrayBufferObj
);
545 case GL_UNSIGNED_BYTE
:
547 const GLubyte
*us
= (const GLubyte
*) map
;
549 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
; i
++) {
550 _mesa_printf("%02x ", us
[i
]);
557 case GL_UNSIGNED_SHORT
:
559 const GLushort
*us
= (const GLushort
*) map
;
561 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
/ 2; i
++) {
562 _mesa_printf("%04x ", us
[i
]);
569 case GL_UNSIGNED_INT
:
571 const GLuint
*us
= (const GLuint
*) map
;
573 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
/ 4; i
++) {
574 _mesa_printf("%08x ", us
[i
]);
585 ctx
->Driver
.UnmapBuffer(ctx
,
586 GL_ELEMENT_ARRAY_BUFFER_ARB
,
587 ctx
->Array
.ElementArrayBufferObj
);
590 /* Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */
592 vbo_validated_drawrangeelements(GLcontext
*ctx
, GLenum mode
,
593 GLboolean index_bounds_valid
,
594 GLuint start
, GLuint end
,
595 GLsizei count
, GLenum type
,
596 const GLvoid
*indices
,
599 struct vbo_context
*vbo
= vbo_context(ctx
);
600 struct vbo_exec_context
*exec
= &vbo
->exec
;
601 struct _mesa_index_buffer ib
;
602 struct _mesa_prim prim
[1];
604 FLUSH_CURRENT( ctx
, 0 );
607 _mesa_update_state( ctx
);
609 if (!_mesa_valid_to_render(ctx
, "glDraw[Range]Elements")) {
614 _mesa_update_state( ctx
);
620 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
629 prim
[0].count
= count
;
631 prim
[0].basevertex
= basevertex
;
633 /* Need to give special consideration to rendering a range of
634 * indices starting somewhere above zero. Typically the
635 * application is issuing multiple DrawRangeElements() to draw
636 * successive primitives layed out linearly in the vertex arrays.
637 * Unless the vertex arrays are all in a VBO (or locked as with
638 * CVA), the OpenGL semantics imply that we need to re-read or
639 * re-upload the vertex data on each draw call.
641 * In the case of hardware tnl, we want to avoid starting the
642 * upload at zero, as it will mean every draw call uploads an
643 * increasing amount of not-used vertex data. Worse - in the
644 * software tnl module, all those vertices might be transformed and
645 * lit but never rendered.
647 * If we just upload or transform the vertices in start..end,
648 * however, the indices will be incorrect.
650 * At this level, we don't know exactly what the requirements of
651 * the backend are going to be, though it will likely boil down to
654 * 1) Do nothing, everything is in a VBO and is processed once
657 * 2) Adjust the indices and vertex arrays so that start becomes
660 * Rather than doing anything here, I'll provide a helper function
661 * for the latter case elsewhere.
664 vbo
->draw_prims( ctx
, exec
->array
.inputs
, prim
, 1, &ib
,
665 index_bounds_valid
, start
, end
);
668 static void GLAPIENTRY
669 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
,
670 GLuint start
, GLuint end
,
671 GLsizei count
, GLenum type
,
672 const GLvoid
*indices
,
675 GET_CURRENT_CONTEXT(ctx
);
677 if (!_mesa_validate_DrawRangeElements( ctx
, mode
, start
, end
, count
,
678 type
, indices
, basevertex
))
681 if (end
>= ctx
->Array
.ArrayObj
->_MaxElement
) {
682 /* the max element is out of bounds of one or more enabled arrays */
683 _mesa_warning(ctx
, "glDraw[Range]Elements{,BaseVertex}(start %u, end %u, "
684 "count %d, type 0x%x, indices=%p, base=%d)\n"
685 "\tindex=%u is out of bounds (max=%u) "
686 "Element Buffer %u (size %d)",
687 start
, end
, count
, type
, indices
, end
, basevertex
,
688 ctx
->Array
.ArrayObj
->_MaxElement
- 1,
689 ctx
->Array
.ElementArrayBufferObj
->Name
,
690 ctx
->Array
.ElementArrayBufferObj
->Size
);
693 dump_element_buffer(ctx
, type
);
696 _mesa_print_arrays(ctx
);
700 _mesa_printf("glDraw[Range]Elements{,BaseVertex}"
701 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
703 start
, end
, type
, count
,
704 ctx
->Array
.ElementArrayBufferObj
->Name
,
709 check_draw_elements_data(ctx
, count
, type
, indices
);
711 (void) check_draw_elements_data
;
714 vbo_validated_drawrangeelements(ctx
, mode
, GL_TRUE
, start
, end
,
715 count
, type
, indices
, basevertex
);
718 static void GLAPIENTRY
719 vbo_exec_DrawRangeElements(GLenum mode
,
720 GLuint start
, GLuint end
,
721 GLsizei count
, GLenum type
,
722 const GLvoid
*indices
)
724 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
729 static void GLAPIENTRY
730 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
731 const GLvoid
*indices
)
733 GET_CURRENT_CONTEXT(ctx
);
735 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
, 0 ))
738 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
739 count
, type
, indices
, 0);
742 static void GLAPIENTRY
743 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
744 const GLvoid
*indices
, GLint basevertex
)
746 GET_CURRENT_CONTEXT(ctx
);
748 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
,
752 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
753 count
, type
, indices
, basevertex
);
756 /* Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */
758 vbo_validated_multidrawelements(GLcontext
*ctx
, GLenum mode
,
759 const GLsizei
*count
, GLenum type
,
760 const GLvoid
**indices
, GLsizei primcount
,
761 const GLint
*basevertex
)
763 struct vbo_context
*vbo
= vbo_context(ctx
);
764 struct vbo_exec_context
*exec
= &vbo
->exec
;
765 struct _mesa_index_buffer ib
;
766 struct _mesa_prim
*prim
;
767 unsigned int index_type_size
= 0;
768 uintptr_t min_index_ptr
, max_index_ptr
;
769 GLboolean fallback
= GL_FALSE
;
775 FLUSH_CURRENT( ctx
, 0 );
778 _mesa_update_state( ctx
);
780 if (!_mesa_valid_to_render(ctx
, "glMultiDrawElements")) {
785 _mesa_update_state( ctx
);
787 prim
= _mesa_calloc(primcount
* sizeof(*prim
));
789 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
793 /* Decide if we can do this all as one set of primitives sharing the
794 * same index buffer, or if we have to reset the index pointer per primitive.
799 case GL_UNSIGNED_INT
:
802 case GL_UNSIGNED_SHORT
:
805 case GL_UNSIGNED_BYTE
:
812 min_index_ptr
= (uintptr_t)indices
[0];
814 for (i
= 0; i
< primcount
; i
++) {
815 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t)indices
[i
]);
816 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t)indices
[i
] +
817 index_type_size
* count
[i
]);
820 /* Check if we can handle this thing as a bunch of index offsets from the
821 * same index pointer. If we can't, then we have to fall back to doing
822 * a draw_prims per primitive.
824 if (index_type_size
!= 1) {
825 for (i
= 0; i
< primcount
; i
++) {
826 if ((((uintptr_t)indices
[i
] - min_index_ptr
) % index_type_size
) != 0) {
833 /* If the index buffer isn't in a VBO, then treating the application's
834 * subranges of the index buffer as one large index buffer may lead to
835 * us reading unmapped memory.
837 if (!_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
))
841 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
843 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
844 ib
.ptr
= (void *)min_index_ptr
;
846 for (i
= 0; i
< primcount
; i
++) {
847 prim
[i
].begin
= (i
== 0);
848 prim
[i
].end
= (i
== primcount
- 1);
852 prim
[i
].start
= ((uintptr_t)indices
[i
] - min_index_ptr
) / index_type_size
;
853 prim
[i
].count
= count
[i
];
855 if (basevertex
!= NULL
)
856 prim
[i
].basevertex
= basevertex
[i
];
858 prim
[i
].basevertex
= 0;
861 vbo
->draw_prims(ctx
, exec
->array
.inputs
, prim
, primcount
, &ib
,
864 for (i
= 0; i
< primcount
; i
++) {
867 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
877 prim
[0].count
= count
[i
];
879 if (basevertex
!= NULL
)
880 prim
[0].basevertex
= basevertex
[i
];
882 prim
[0].basevertex
= 0;
885 vbo
->draw_prims(ctx
, exec
->array
.inputs
, prim
, 1, &ib
,
891 static void GLAPIENTRY
892 vbo_exec_MultiDrawElements(GLenum mode
,
893 const GLsizei
*count
, GLenum type
,
894 const GLvoid
**indices
,
897 GET_CURRENT_CONTEXT(ctx
);
900 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
902 for (i
= 0; i
< primcount
; i
++) {
903 if (!_mesa_validate_DrawElements(ctx
, mode
, count
[i
], type
, indices
[i
],
908 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
912 static void GLAPIENTRY
913 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
914 const GLsizei
*count
, GLenum type
,
915 const GLvoid
**indices
,
917 const GLsizei
*basevertex
)
919 GET_CURRENT_CONTEXT(ctx
);
922 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
924 for (i
= 0; i
< primcount
; i
++) {
925 if (!_mesa_validate_DrawElements(ctx
, mode
, count
[i
], type
, indices
[i
],
930 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
935 /***********************************************************************
940 vbo_exec_array_init( struct vbo_exec_context
*exec
)
943 exec
->vtxfmt
.DrawArrays
= vbo_exec_DrawArrays
;
944 exec
->vtxfmt
.DrawElements
= vbo_exec_DrawElements
;
945 exec
->vtxfmt
.DrawRangeElements
= vbo_exec_DrawRangeElements
;
946 exec
->vtxfmt
.MultiDrawElementsEXT
= vbo_exec_MultiDrawElements
;
947 exec
->vtxfmt
.DrawElementsBaseVertex
= vbo_exec_DrawElementsBaseVertex
;
948 exec
->vtxfmt
.DrawRangeElementsBaseVertex
= vbo_exec_DrawRangeElementsBaseVertex
;
949 exec
->vtxfmt
.MultiDrawElementsBaseVertex
= vbo_exec_MultiDrawElementsBaseVertex
;
951 exec
->vtxfmt
.DrawArrays
= _mesa_noop_DrawArrays
;
952 exec
->vtxfmt
.DrawElements
= _mesa_noop_DrawElements
;
953 exec
->vtxfmt
.DrawRangeElements
= _mesa_noop_DrawRangeElements
;
954 exec
->vtxfmt
.MultiDrawElementsEXT
= _mesa_noop_MultiDrawElements
;
955 exec
->vtxfmt
.DrawElementsBaseVertex
= _mesa_noop_DrawElementsBaseVertex
;
956 exec
->vtxfmt
.DrawRangeElementsBaseVertex
= _mesa_noop_DrawRangeElementsBaseVertex
;
957 exec
->vtxfmt
.MultiDrawElementsBaseVertex
= _mesa_noop_MultiDrawElementsBaseVertex
;
963 vbo_exec_array_destroy( struct vbo_exec_context
*exec
)
969 /* This API entrypoint is not ordinarily used */
971 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
973 vbo_exec_DrawArrays(mode
, first
, count
);
977 /* This API entrypoint is not ordinarily used */
979 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
980 const GLvoid
*indices
)
982 vbo_exec_DrawElements(mode
, count
, type
, indices
);
986 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
987 const GLvoid
*indices
, GLint basevertex
)
989 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
993 /* This API entrypoint is not ordinarily used */
995 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
996 GLenum type
, const GLvoid
*indices
)
998 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
1002 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
1003 GLsizei count
, GLenum type
,
1004 const GLvoid
*indices
, GLint basevertex
)
1006 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1007 indices
, basevertex
);
1010 /* GL_EXT_multi_draw_arrays */
1012 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
1013 const GLvoid
**indices
, GLsizei primcount
)
1015 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
1019 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
1020 const GLsizei
*count
, GLenum type
,
1021 const GLvoid
**indices
, GLsizei primcount
,
1022 const GLint
*basevertex
)
1024 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
1025 primcount
, basevertex
);