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/enums.h"
37 #include "main/macros.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 GLuint count
= prim
->count
;
55 if (_mesa_is_bufferobj(ib
->obj
)) {
57 ctx
->Driver
.MapBuffer(ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
,
58 GL_READ_ONLY
, ib
->obj
);
59 indices
= ADD_POINTERS(map
, ib
->ptr
);
65 case GL_UNSIGNED_INT
: {
66 const GLuint
*ui_indices
= (const GLuint
*)indices
;
67 GLuint max_ui
= ui_indices
[count
-1];
68 GLuint min_ui
= ui_indices
[0];
69 for (i
= 0; i
< count
; i
++) {
70 if (ui_indices
[i
] > max_ui
) max_ui
= ui_indices
[i
];
71 if (ui_indices
[i
] < min_ui
) min_ui
= ui_indices
[i
];
77 case GL_UNSIGNED_SHORT
: {
78 const GLushort
*us_indices
= (const GLushort
*)indices
;
79 GLuint max_us
= us_indices
[count
-1];
80 GLuint min_us
= us_indices
[0];
81 for (i
= 0; i
< count
; i
++) {
82 if (us_indices
[i
] > max_us
) max_us
= us_indices
[i
];
83 if (us_indices
[i
] < min_us
) min_us
= us_indices
[i
];
89 case GL_UNSIGNED_BYTE
: {
90 const GLubyte
*ub_indices
= (const GLubyte
*)indices
;
91 GLuint max_ub
= ub_indices
[count
-1];
92 GLuint min_ub
= ub_indices
[0];
93 for (i
= 0; i
< count
; i
++) {
94 if (ub_indices
[i
] > max_ub
) max_ub
= ub_indices
[i
];
95 if (ub_indices
[i
] < min_ub
) min_ub
= ub_indices
[i
];
106 if (_mesa_is_bufferobj(ib
->obj
)) {
107 ctx
->Driver
.UnmapBuffer(ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
, ib
->obj
);
113 * Check that element 'j' of the array has reasonable data.
117 check_array_data(GLcontext
*ctx
, struct gl_client_array
*array
,
118 GLuint attrib
, GLuint j
)
120 if (array
->Enabled
) {
121 const void *data
= array
->Ptr
;
122 if (_mesa_is_bufferobj(array
->BufferObj
)) {
123 if (!array
->BufferObj
->Pointer
) {
124 /* need to map now */
125 array
->BufferObj
->Pointer
=
126 ctx
->Driver
.MapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
,
127 GL_READ_ONLY
, array
->BufferObj
);
129 data
= ADD_POINTERS(data
, array
->BufferObj
->Pointer
);
131 switch (array
->Type
) {
134 GLfloat
*f
= (GLfloat
*) ((GLubyte
*) data
+ array
->StrideB
* j
);
136 for (k
= 0; k
< array
->Size
; k
++) {
137 if (IS_INF_OR_NAN(f
[k
]) ||
138 f
[k
] >= 1.0e20
|| f
[k
] <= -1.0e10
) {
139 printf("Bad array data:\n");
140 printf(" Element[%u].%u = %f\n", j
, k
, f
[k
]);
141 printf(" Array %u at %p\n", attrib
, (void* ) array
);
142 printf(" Type 0x%x, Size %d, Stride %d\n",
143 array
->Type
, array
->Size
, array
->Stride
);
144 printf(" Address/offset %p in Buffer Object %u\n",
145 array
->Ptr
, array
->BufferObj
->Name
);
146 f
[k
] = 1.0; /* XXX replace the bad value! */
148 /*assert(!IS_INF_OR_NAN(f[k]));*/
160 * Unmap the buffer object referenced by given array, if mapped.
163 unmap_array_buffer(GLcontext
*ctx
, struct gl_client_array
*array
)
165 if (array
->Enabled
&&
166 _mesa_is_bufferobj(array
->BufferObj
) &&
167 _mesa_bufferobj_mapped(array
->BufferObj
)) {
168 ctx
->Driver
.UnmapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
, array
->BufferObj
);
174 * Examine the array's data for NaNs, etc.
177 check_draw_elements_data(GLcontext
*ctx
, GLsizei count
, GLenum elemType
,
178 const void *elements
, GLint basevertex
)
180 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
184 if (_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
)) {
185 elemMap
= ctx
->Driver
.MapBuffer(ctx
,
186 GL_ELEMENT_ARRAY_BUFFER_ARB
,
188 ctx
->Array
.ElementArrayBufferObj
);
189 elements
= ADD_POINTERS(elements
, elemMap
);
192 for (i
= 0; i
< count
; i
++) {
197 case GL_UNSIGNED_BYTE
:
198 j
= ((const GLubyte
*) elements
)[i
];
200 case GL_UNSIGNED_SHORT
:
201 j
= ((const GLushort
*) elements
)[i
];
203 case GL_UNSIGNED_INT
:
204 j
= ((const GLuint
*) elements
)[i
];
210 /* check element j of each enabled array */
211 check_array_data(ctx
, &arrayObj
->Vertex
, VERT_ATTRIB_POS
, j
);
212 check_array_data(ctx
, &arrayObj
->Normal
, VERT_ATTRIB_NORMAL
, j
);
213 check_array_data(ctx
, &arrayObj
->Color
, VERT_ATTRIB_COLOR0
, j
);
214 check_array_data(ctx
, &arrayObj
->SecondaryColor
, VERT_ATTRIB_COLOR1
, j
);
215 for (k
= 0; k
< Elements(arrayObj
->TexCoord
); k
++) {
216 check_array_data(ctx
, &arrayObj
->TexCoord
[k
], VERT_ATTRIB_TEX0
+ k
, j
);
218 for (k
= 0; k
< Elements(arrayObj
->VertexAttrib
); k
++) {
219 check_array_data(ctx
, &arrayObj
->VertexAttrib
[k
],
220 VERT_ATTRIB_GENERIC0
+ k
, j
);
224 if (_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
)) {
225 ctx
->Driver
.UnmapBuffer(ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
,
226 ctx
->Array
.ElementArrayBufferObj
);
229 unmap_array_buffer(ctx
, &arrayObj
->Vertex
);
230 unmap_array_buffer(ctx
, &arrayObj
->Normal
);
231 unmap_array_buffer(ctx
, &arrayObj
->Color
);
232 for (k
= 0; k
< Elements(arrayObj
->TexCoord
); k
++) {
233 unmap_array_buffer(ctx
, &arrayObj
->TexCoord
[k
]);
235 for (k
= 0; k
< Elements(arrayObj
->VertexAttrib
); k
++) {
236 unmap_array_buffer(ctx
, &arrayObj
->VertexAttrib
[k
]);
242 * Check array data, looking for NaNs, etc.
245 check_draw_arrays_data(GLcontext
*ctx
, GLint start
, GLsizei count
)
252 * Print info/data for glDrawArrays().
255 print_draw_arrays(GLcontext
*ctx
, struct vbo_exec_context
*exec
,
256 GLenum mode
, GLint start
, GLsizei count
)
260 printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
263 for (i
= 0; i
< 32; i
++) {
264 GLuint bufName
= exec
->array
.inputs
[i
]->BufferObj
->Name
;
265 GLint stride
= exec
->array
.inputs
[i
]->Stride
;
266 printf("attr %2d: size %d stride %d enabled %d "
267 "ptr %p Bufobj %u\n",
269 exec
->array
.inputs
[i
]->Size
,
271 /*exec->array.inputs[i]->Enabled,*/
272 exec
->array
.legacy_array
[i
]->Enabled
,
273 exec
->array
.inputs
[i
]->Ptr
,
277 struct gl_buffer_object
*buf
= _mesa_lookup_bufferobj(ctx
, bufName
);
278 GLubyte
*p
= ctx
->Driver
.MapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
,
279 GL_READ_ONLY_ARB
, buf
);
280 int offset
= (int) (GLintptr
) exec
->array
.inputs
[i
]->Ptr
;
281 float *f
= (float *) (p
+ offset
);
284 int n
= (count
* stride
) / 4;
287 printf(" Data at offset %d:\n", offset
);
288 for (i
= 0; i
< n
; i
++) {
289 printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
291 ctx
->Driver
.UnmapBuffer(ctx
, GL_ARRAY_BUFFER_ARB
, buf
);
298 * Just translate the arrayobj into a sane layout.
301 bind_array_obj(GLcontext
*ctx
)
303 struct vbo_context
*vbo
= vbo_context(ctx
);
304 struct vbo_exec_context
*exec
= &vbo
->exec
;
305 struct gl_array_object
*arrayObj
= ctx
->Array
.ArrayObj
;
308 /* TODO: Fix the ArrayObj struct to keep legacy arrays in an array
309 * rather than as individual named arrays. Then this function can
312 exec
->array
.legacy_array
[VERT_ATTRIB_POS
] = &arrayObj
->Vertex
;
313 exec
->array
.legacy_array
[VERT_ATTRIB_WEIGHT
] = &arrayObj
->Weight
;
314 exec
->array
.legacy_array
[VERT_ATTRIB_NORMAL
] = &arrayObj
->Normal
;
315 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR0
] = &arrayObj
->Color
;
316 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR1
] = &arrayObj
->SecondaryColor
;
317 exec
->array
.legacy_array
[VERT_ATTRIB_FOG
] = &arrayObj
->FogCoord
;
318 exec
->array
.legacy_array
[VERT_ATTRIB_COLOR_INDEX
] = &arrayObj
->Index
;
319 if (arrayObj
->PointSize
.Enabled
) {
320 /* this aliases COLOR_INDEX */
321 exec
->array
.legacy_array
[VERT_ATTRIB_POINT_SIZE
] = &arrayObj
->PointSize
;
323 exec
->array
.legacy_array
[VERT_ATTRIB_EDGEFLAG
] = &arrayObj
->EdgeFlag
;
325 for (i
= 0; i
< Elements(arrayObj
->TexCoord
); i
++)
326 exec
->array
.legacy_array
[VERT_ATTRIB_TEX0
+ i
] = &arrayObj
->TexCoord
[i
];
328 for (i
= 0; i
< Elements(arrayObj
->VertexAttrib
); i
++) {
329 assert(i
< Elements(exec
->array
.generic_array
));
330 exec
->array
.generic_array
[i
] = &arrayObj
->VertexAttrib
[i
];
333 exec
->array
.array_obj
= arrayObj
->Name
;
338 recalculate_input_bindings(GLcontext
*ctx
)
340 struct vbo_context
*vbo
= vbo_context(ctx
);
341 struct vbo_exec_context
*exec
= &vbo
->exec
;
342 const struct gl_client_array
**inputs
= &exec
->array
.inputs
[0];
343 GLbitfield const_inputs
= 0x0;
346 exec
->array
.program_mode
= get_program_mode(ctx
);
347 exec
->array
.enabled_flags
= ctx
->Array
.ArrayObj
->_Enabled
;
349 switch (exec
->array
.program_mode
) {
351 /* When no vertex program is active (or the vertex program is generated
352 * from fixed-function state). We put the material values into the
353 * generic slots. This is the only situation where material values
354 * are available as per-vertex attributes.
356 for (i
= 0; i
<= VERT_ATTRIB_TEX7
; i
++) {
357 if (exec
->array
.legacy_array
[i
]->Enabled
)
358 inputs
[i
] = exec
->array
.legacy_array
[i
];
360 inputs
[i
] = &vbo
->legacy_currval
[i
];
361 const_inputs
|= 1 << i
;
365 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
366 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->mat_currval
[i
];
367 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
370 /* Could use just about anything, just to fill in the empty
373 for (i
= MAT_ATTRIB_MAX
; i
< VERT_ATTRIB_MAX
- VERT_ATTRIB_GENERIC0
; i
++) {
374 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->generic_currval
[i
];
375 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
380 /* NV_vertex_program - attribute arrays alias and override
381 * conventional, legacy arrays. No materials, and the generic
384 for (i
= 0; i
<= VERT_ATTRIB_TEX7
; i
++) {
385 if (exec
->array
.generic_array
[i
]->Enabled
)
386 inputs
[i
] = exec
->array
.generic_array
[i
];
387 else if (exec
->array
.legacy_array
[i
]->Enabled
)
388 inputs
[i
] = exec
->array
.legacy_array
[i
];
390 inputs
[i
] = &vbo
->legacy_currval
[i
];
391 const_inputs
|= 1 << i
;
395 /* Could use just about anything, just to fill in the empty
398 for (i
= VERT_ATTRIB_GENERIC0
; i
< VERT_ATTRIB_MAX
; i
++) {
399 inputs
[i
] = &vbo
->generic_currval
[i
- VERT_ATTRIB_GENERIC0
];
400 const_inputs
|= 1 << i
;
405 /* GL_ARB_vertex_program or GLSL vertex shader - Only the generic[0]
406 * attribute array aliases and overrides the legacy position array.
408 * Otherwise, legacy attributes available in the legacy slots,
409 * generic attributes in the generic slots and materials are not
410 * available as per-vertex attributes.
412 if (exec
->array
.generic_array
[0]->Enabled
)
413 inputs
[0] = exec
->array
.generic_array
[0];
414 else if (exec
->array
.legacy_array
[0]->Enabled
)
415 inputs
[0] = exec
->array
.legacy_array
[0];
417 inputs
[0] = &vbo
->legacy_currval
[0];
418 const_inputs
|= 1 << 0;
421 for (i
= 1; i
<= VERT_ATTRIB_TEX7
; i
++) {
422 if (exec
->array
.legacy_array
[i
]->Enabled
)
423 inputs
[i
] = exec
->array
.legacy_array
[i
];
425 inputs
[i
] = &vbo
->legacy_currval
[i
];
426 const_inputs
|= 1 << i
;
430 for (i
= 0; i
< MAX_VERTEX_GENERIC_ATTRIBS
; i
++) {
431 if (exec
->array
.generic_array
[i
]->Enabled
)
432 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = exec
->array
.generic_array
[i
];
434 inputs
[VERT_ATTRIB_GENERIC0
+ i
] = &vbo
->generic_currval
[i
];
435 const_inputs
|= 1 << (VERT_ATTRIB_GENERIC0
+ i
);
442 _mesa_set_varying_vp_inputs( ctx
, ~const_inputs
);
447 * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
448 * These will point to the arrays to actually use for drawing. Some will
449 * be user-provided arrays, other will be zero-stride const-valued arrays.
450 * Note that this might set the _NEW_ARRAY dirty flag so state validation
451 * must be done after this call.
454 bind_arrays(GLcontext
*ctx
)
457 if (ctx
->Array
.ArrayObj
.Name
!= exec
->array
.array_obj
) {
459 recalculate_input_bindings(ctx
);
461 else if (exec
->array
.program_mode
!= get_program_mode(ctx
) ||
462 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_VERBOSE
& VERBOSE_DRAW
)
486 _mesa_debug(ctx
, "glDrawArrays(%s, %d, %d)\n",
487 _mesa_lookup_enum_by_nr(mode
), start
, count
);
489 if (!_mesa_validate_DrawArrays( ctx
, mode
, start
, count
))
492 FLUSH_CURRENT( ctx
, 0 );
494 if (!_mesa_valid_to_render(ctx
, "glDrawArrays")) {
499 check_draw_arrays_data(ctx
, start
, count
);
501 (void) check_draw_arrays_data
;
506 /* Again... because we may have changed the bitmask of per-vertex varying
507 * attributes. If we regenerate the fixed-function vertex program now
508 * we may be able to prune down the number of vertex attributes which we
509 * need in the shader.
512 _mesa_update_state( ctx
);
519 prim
[0].start
= start
;
520 prim
[0].count
= count
;
522 prim
[0].basevertex
= 0;
523 prim
[0].num_instances
= 1;
525 vbo
->draw_prims( ctx
, exec
->array
.inputs
, prim
, 1, NULL
,
526 GL_TRUE
, start
, start
+ count
- 1 );
529 print_draw_arrays(ctx
, exec
, mode
, start
, count
);
531 (void) print_draw_arrays
;
536 static void GLAPIENTRY
537 vbo_exec_DrawArraysInstanced(GLenum mode
, GLint start
, GLsizei count
,
540 GET_CURRENT_CONTEXT(ctx
);
541 struct vbo_context
*vbo
= vbo_context(ctx
);
542 struct vbo_exec_context
*exec
= &vbo
->exec
;
543 struct _mesa_prim prim
[1];
545 if (MESA_VERBOSE
& VERBOSE_DRAW
)
546 _mesa_debug(ctx
, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
547 _mesa_lookup_enum_by_nr(mode
), start
, count
, primcount
);
549 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, start
, count
, primcount
))
552 FLUSH_CURRENT( ctx
, 0 );
554 if (!_mesa_valid_to_render(ctx
, "glDrawArraysInstanced")) {
559 check_draw_arrays_data(ctx
, start
, count
);
564 /* Again... because we may have changed the bitmask of per-vertex varying
565 * attributes. If we regenerate the fixed-function vertex program now
566 * we may be able to prune down the number of vertex attributes which we
567 * need in the shader.
570 _mesa_update_state( ctx
);
577 prim
[0].start
= start
;
578 prim
[0].count
= count
;
580 prim
[0].basevertex
= 0;
581 prim
[0].num_instances
= primcount
;
583 vbo
->draw_prims( ctx
, exec
->array
.inputs
, prim
, 1, NULL
,
584 GL_TRUE
, start
, start
+ count
- 1 );
587 print_draw_arrays(ctx
, exec
, mode
, start
, count
);
593 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
596 dump_element_buffer(GLcontext
*ctx
, GLenum type
)
598 const GLvoid
*map
= ctx
->Driver
.MapBuffer(ctx
,
599 GL_ELEMENT_ARRAY_BUFFER_ARB
,
601 ctx
->Array
.ElementArrayBufferObj
);
603 case GL_UNSIGNED_BYTE
:
605 const GLubyte
*us
= (const GLubyte
*) map
;
607 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
; i
++) {
608 printf("%02x ", us
[i
]);
615 case GL_UNSIGNED_SHORT
:
617 const GLushort
*us
= (const GLushort
*) map
;
619 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
/ 2; i
++) {
620 printf("%04x ", us
[i
]);
627 case GL_UNSIGNED_INT
:
629 const GLuint
*us
= (const GLuint
*) map
;
631 for (i
= 0; i
< ctx
->Array
.ElementArrayBufferObj
->Size
/ 4; i
++) {
632 printf("%08x ", us
[i
]);
643 ctx
->Driver
.UnmapBuffer(ctx
, GL_ELEMENT_ARRAY_BUFFER_ARB
,
644 ctx
->Array
.ElementArrayBufferObj
);
648 /* Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */
650 vbo_validated_drawrangeelements(GLcontext
*ctx
, GLenum mode
,
651 GLboolean index_bounds_valid
,
652 GLuint start
, GLuint end
,
653 GLsizei count
, GLenum type
,
654 const GLvoid
*indices
,
655 GLint basevertex
, GLint primcount
)
657 struct vbo_context
*vbo
= vbo_context(ctx
);
658 struct vbo_exec_context
*exec
= &vbo
->exec
;
659 struct _mesa_index_buffer ib
;
660 struct _mesa_prim prim
[1];
662 FLUSH_CURRENT( ctx
, 0 );
664 if (!_mesa_valid_to_render(ctx
, "glDraw[Range]Elements")) {
670 /* check for dirty state again */
672 _mesa_update_state( ctx
);
676 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
685 prim
[0].count
= count
;
687 prim
[0].basevertex
= basevertex
;
688 prim
[0].num_instances
= primcount
;
690 /* Need to give special consideration to rendering a range of
691 * indices starting somewhere above zero. Typically the
692 * application is issuing multiple DrawRangeElements() to draw
693 * successive primitives layed out linearly in the vertex arrays.
694 * Unless the vertex arrays are all in a VBO (or locked as with
695 * CVA), the OpenGL semantics imply that we need to re-read or
696 * re-upload the vertex data on each draw call.
698 * In the case of hardware tnl, we want to avoid starting the
699 * upload at zero, as it will mean every draw call uploads an
700 * increasing amount of not-used vertex data. Worse - in the
701 * software tnl module, all those vertices might be transformed and
702 * lit but never rendered.
704 * If we just upload or transform the vertices in start..end,
705 * however, the indices will be incorrect.
707 * At this level, we don't know exactly what the requirements of
708 * the backend are going to be, though it will likely boil down to
711 * 1) Do nothing, everything is in a VBO and is processed once
714 * 2) Adjust the indices and vertex arrays so that start becomes
717 * Rather than doing anything here, I'll provide a helper function
718 * for the latter case elsewhere.
721 vbo
->draw_prims( ctx
, exec
->array
.inputs
, prim
, 1, &ib
,
722 index_bounds_valid
, start
, end
);
725 static void GLAPIENTRY
726 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
,
727 GLuint start
, GLuint end
,
728 GLsizei count
, GLenum type
,
729 const GLvoid
*indices
,
732 static GLuint warnCount
= 0;
733 GET_CURRENT_CONTEXT(ctx
);
735 if (MESA_VERBOSE
& VERBOSE_DRAW
)
737 "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
738 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
739 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
741 if (!_mesa_validate_DrawRangeElements( ctx
, mode
, start
, end
, count
,
742 type
, indices
, basevertex
))
745 /* NOTE: It's important that 'end' is a reasonable value.
746 * in _tnl_draw_prims(), we use end to determine how many vertices
747 * to transform. If it's too large, we can unnecessarily split prims
748 * or we can read/write out of memory in several different places!
751 /* Catch/fix some potential user errors */
752 if (type
== GL_UNSIGNED_BYTE
) {
753 start
= MIN2(start
, 0xff);
754 end
= MIN2(end
, 0xff);
756 else if (type
== GL_UNSIGNED_SHORT
) {
757 start
= MIN2(start
, 0xffff);
758 end
= MIN2(end
, 0xffff);
761 if (end
>= ctx
->Array
.ArrayObj
->_MaxElement
) {
762 /* the max element is out of bounds of one or more enabled arrays */
765 if (warnCount
< 10) {
766 _mesa_warning(ctx
, "glDraw[Range]Elements(start %u, end %u, count %d, "
767 "type 0x%x, indices=%p)\n"
768 "\tend is out of bounds (max=%u) "
769 "Element Buffer %u (size %d)\n"
770 "\tThis should probably be fixed in the application.",
771 start
, end
, count
, type
, indices
,
772 ctx
->Array
.ArrayObj
->_MaxElement
- 1,
773 ctx
->Array
.ElementArrayBufferObj
->Name
,
774 ctx
->Array
.ElementArrayBufferObj
->Size
);
778 dump_element_buffer(ctx
, type
);
781 _mesa_print_arrays(ctx
);
784 /* 'end' was out of bounds, but now let's check the actual array
785 * indexes to see if any of them are out of bounds.
788 GLuint max
= _mesa_max_buffer_index(ctx
, count
, type
, indices
,
789 ctx
->Array
.ElementArrayBufferObj
);
790 if (max
>= ctx
->Array
.ArrayObj
->_MaxElement
) {
791 if (warnCount
< 10) {
792 _mesa_warning(ctx
, "glDraw[Range]Elements(start %u, end %u, "
793 "count %d, type 0x%x, indices=%p)\n"
794 "\tindex=%u is out of bounds (max=%u) "
795 "Element Buffer %u (size %d)\n"
796 "\tSkipping the glDrawRangeElements() call",
797 start
, end
, count
, type
, indices
, max
,
798 ctx
->Array
.ArrayObj
->_MaxElement
- 1,
799 ctx
->Array
.ElementArrayBufferObj
->Name
,
800 ctx
->Array
.ElementArrayBufferObj
->Size
);
803 /* XXX we could also find the min index and compare to 'start'
804 * to see if start is correct. But it's more likely to get the
810 /* Set 'end' to the max possible legal value */
811 assert(ctx
->Array
.ArrayObj
->_MaxElement
>= 1);
812 end
= ctx
->Array
.ArrayObj
->_MaxElement
- 1;
815 printf("glDraw[Range]Elements{,BaseVertex}"
816 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
818 start
, end
, type
, count
,
819 ctx
->Array
.ElementArrayBufferObj
->Name
,
824 check_draw_elements_data(ctx
, count
, type
, indices
);
826 (void) check_draw_elements_data
;
829 vbo_validated_drawrangeelements(ctx
, mode
, GL_TRUE
, start
, end
,
830 count
, type
, indices
, basevertex
, 1);
834 static void GLAPIENTRY
835 vbo_exec_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
,
836 GLsizei count
, GLenum type
, const GLvoid
*indices
)
838 GET_CURRENT_CONTEXT(ctx
);
840 if (MESA_VERBOSE
& VERBOSE_DRAW
)
842 "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
843 _mesa_lookup_enum_by_nr(mode
), start
, end
, count
,
844 _mesa_lookup_enum_by_nr(type
), indices
);
846 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
851 static void GLAPIENTRY
852 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
853 const GLvoid
*indices
)
855 GET_CURRENT_CONTEXT(ctx
);
857 if (MESA_VERBOSE
& VERBOSE_DRAW
)
858 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
859 _mesa_lookup_enum_by_nr(mode
), count
,
860 _mesa_lookup_enum_by_nr(type
), indices
);
862 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
, 0 ))
865 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
866 count
, type
, indices
, 0, 1);
870 static void GLAPIENTRY
871 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
872 const GLvoid
*indices
, GLint basevertex
)
874 GET_CURRENT_CONTEXT(ctx
);
876 if (MESA_VERBOSE
& VERBOSE_DRAW
)
877 _mesa_debug(ctx
, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
878 _mesa_lookup_enum_by_nr(mode
), count
,
879 _mesa_lookup_enum_by_nr(type
), indices
, basevertex
);
881 if (!_mesa_validate_DrawElements( ctx
, mode
, count
, type
, indices
,
885 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
886 count
, type
, indices
, basevertex
, 1);
890 static void GLAPIENTRY
891 vbo_exec_DrawElementsInstanced(GLenum mode
, GLsizei count
, GLenum type
,
892 const GLvoid
*indices
, GLsizei primcount
)
894 GET_CURRENT_CONTEXT(ctx
);
896 if (MESA_VERBOSE
& VERBOSE_DRAW
)
897 _mesa_debug(ctx
, "glDrawElementsInstanced(%s, %d, %s, %p, %d)\n",
898 _mesa_lookup_enum_by_nr(mode
), count
,
899 _mesa_lookup_enum_by_nr(type
), indices
, primcount
);
901 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
, indices
,
905 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, ~0, ~0,
906 count
, type
, indices
, 0, primcount
);
910 /** Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */
912 vbo_validated_multidrawelements(GLcontext
*ctx
, GLenum mode
,
913 const GLsizei
*count
, GLenum type
,
914 const GLvoid
**indices
, GLsizei primcount
,
915 const GLint
*basevertex
)
917 struct vbo_context
*vbo
= vbo_context(ctx
);
918 struct vbo_exec_context
*exec
= &vbo
->exec
;
919 struct _mesa_index_buffer ib
;
920 struct _mesa_prim
*prim
;
921 unsigned int index_type_size
= 0;
922 uintptr_t min_index_ptr
, max_index_ptr
;
923 GLboolean fallback
= GL_FALSE
;
929 FLUSH_CURRENT( ctx
, 0 );
931 if (!_mesa_valid_to_render(ctx
, "glMultiDrawElements")) {
935 prim
= calloc(1, primcount
* sizeof(*prim
));
937 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
941 /* Decide if we can do this all as one set of primitives sharing the
942 * same index buffer, or if we have to reset the index pointer per primitive.
946 /* check for dirty state again */
948 _mesa_update_state( ctx
);
951 case GL_UNSIGNED_INT
:
954 case GL_UNSIGNED_SHORT
:
957 case GL_UNSIGNED_BYTE
:
964 min_index_ptr
= (uintptr_t)indices
[0];
966 for (i
= 0; i
< primcount
; i
++) {
967 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t)indices
[i
]);
968 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t)indices
[i
] +
969 index_type_size
* count
[i
]);
972 /* Check if we can handle this thing as a bunch of index offsets from the
973 * same index pointer. If we can't, then we have to fall back to doing
974 * a draw_prims per primitive.
976 if (index_type_size
!= 1) {
977 for (i
= 0; i
< primcount
; i
++) {
978 if ((((uintptr_t)indices
[i
] - min_index_ptr
) % index_type_size
) != 0) {
985 /* If the index buffer isn't in a VBO, then treating the application's
986 * subranges of the index buffer as one large index buffer may lead to
987 * us reading unmapped memory.
989 if (!_mesa_is_bufferobj(ctx
->Array
.ElementArrayBufferObj
))
993 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
995 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
996 ib
.ptr
= (void *)min_index_ptr
;
998 for (i
= 0; i
< primcount
; i
++) {
999 prim
[i
].begin
= (i
== 0);
1000 prim
[i
].end
= (i
== primcount
- 1);
1003 prim
[i
].mode
= mode
;
1004 prim
[i
].start
= ((uintptr_t)indices
[i
] - min_index_ptr
) / index_type_size
;
1005 prim
[i
].count
= count
[i
];
1006 prim
[i
].indexed
= 1;
1007 prim
[i
].num_instances
= 1;
1008 if (basevertex
!= NULL
)
1009 prim
[i
].basevertex
= basevertex
[i
];
1011 prim
[i
].basevertex
= 0;
1014 vbo
->draw_prims(ctx
, exec
->array
.inputs
, prim
, primcount
, &ib
,
1017 /* render one prim at a time */
1018 for (i
= 0; i
< primcount
; i
++) {
1019 ib
.count
= count
[i
];
1021 ib
.obj
= ctx
->Array
.ElementArrayBufferObj
;
1022 ib
.ptr
= indices
[i
];
1028 prim
[0].mode
= mode
;
1030 prim
[0].count
= count
[i
];
1031 prim
[0].indexed
= 1;
1032 prim
[0].num_instances
= 1;
1033 if (basevertex
!= NULL
)
1034 prim
[0].basevertex
= basevertex
[i
];
1036 prim
[0].basevertex
= 0;
1038 vbo
->draw_prims(ctx
, exec
->array
.inputs
, prim
, 1, &ib
,
1047 static void GLAPIENTRY
1048 vbo_exec_MultiDrawElements(GLenum mode
,
1049 const GLsizei
*count
, GLenum type
,
1050 const GLvoid
**indices
,
1053 GET_CURRENT_CONTEXT(ctx
);
1056 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
1058 for (i
= 0; i
< primcount
; i
++) {
1059 if (!_mesa_validate_DrawElements(ctx
, mode
, count
[i
], type
, indices
[i
],
1064 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1069 static void GLAPIENTRY
1070 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
1071 const GLsizei
*count
, GLenum type
,
1072 const GLvoid
**indices
,
1074 const GLsizei
*basevertex
)
1076 GET_CURRENT_CONTEXT(ctx
);
1079 ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx
);
1081 for (i
= 0; i
< primcount
; i
++) {
1082 if (!_mesa_validate_DrawElements(ctx
, mode
, count
[i
], type
, indices
[i
],
1087 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1092 /***********************************************************************
1097 vbo_exec_array_init( struct vbo_exec_context
*exec
)
1100 exec
->vtxfmt
.DrawArrays
= vbo_exec_DrawArrays
;
1101 exec
->vtxfmt
.DrawElements
= vbo_exec_DrawElements
;
1102 exec
->vtxfmt
.DrawRangeElements
= vbo_exec_DrawRangeElements
;
1103 exec
->vtxfmt
.MultiDrawElementsEXT
= vbo_exec_MultiDrawElements
;
1104 exec
->vtxfmt
.DrawElementsBaseVertex
= vbo_exec_DrawElementsBaseVertex
;
1105 exec
->vtxfmt
.DrawRangeElementsBaseVertex
= vbo_exec_DrawRangeElementsBaseVertex
;
1106 exec
->vtxfmt
.MultiDrawElementsBaseVertex
= vbo_exec_MultiDrawElementsBaseVertex
;
1107 exec
->vtxfmt
.DrawArraysInstanced
= vbo_exec_DrawArraysInstanced
;
1108 exec
->vtxfmt
.DrawElementsInstanced
= vbo_exec_DrawElementsInstanced
;
1110 exec
->vtxfmt
.DrawArrays
= _mesa_noop_DrawArrays
;
1111 exec
->vtxfmt
.DrawElements
= _mesa_noop_DrawElements
;
1112 exec
->vtxfmt
.DrawRangeElements
= _mesa_noop_DrawRangeElements
;
1113 exec
->vtxfmt
.MultiDrawElementsEXT
= _mesa_noop_MultiDrawElements
;
1114 exec
->vtxfmt
.DrawElementsBaseVertex
= _mesa_noop_DrawElementsBaseVertex
;
1115 exec
->vtxfmt
.DrawRangeElementsBaseVertex
= _mesa_noop_DrawRangeElementsBaseVertex
;
1116 exec
->vtxfmt
.MultiDrawElementsBaseVertex
= _mesa_noop_MultiDrawElementsBaseVertex
;
1122 vbo_exec_array_destroy( struct vbo_exec_context
*exec
)
1128 /* This API entrypoint is not ordinarily used */
1130 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
1132 vbo_exec_DrawArrays(mode
, first
, count
);
1136 /* This API entrypoint is not ordinarily used */
1138 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1139 const GLvoid
*indices
)
1141 vbo_exec_DrawElements(mode
, count
, type
, indices
);
1145 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1146 const GLvoid
*indices
, GLint basevertex
)
1148 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
1152 /* This API entrypoint is not ordinarily used */
1154 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
1155 GLenum type
, const GLvoid
*indices
)
1157 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
1162 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
1163 GLsizei count
, GLenum type
,
1164 const GLvoid
*indices
, GLint basevertex
)
1166 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1167 indices
, basevertex
);
1171 /* GL_EXT_multi_draw_arrays */
1173 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
1174 const GLvoid
**indices
, GLsizei primcount
)
1176 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
1181 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
1182 const GLsizei
*count
, GLenum type
,
1183 const GLvoid
**indices
, GLsizei primcount
,
1184 const GLint
*basevertex
)
1186 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
1187 primcount
, basevertex
);