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 **************************************************************************/
30 #include "main/arrayobj.h"
31 #include "main/glheader.h"
32 #include "main/context.h"
33 #include "main/state.h"
34 #include "main/api_validate.h"
35 #include "main/dispatch.h"
36 #include "main/varray.h"
37 #include "main/bufferobj.h"
38 #include "main/enums.h"
39 #include "main/macros.h"
40 #include "main/transformfeedback.h"
42 #include "vbo_context.h"
46 * Check that element 'j' of the array has reasonable data.
48 * For debugging purposes; not normally used.
51 check_array_data(struct gl_context
*ctx
, struct gl_vertex_array_object
*vao
,
52 GLuint attrib
, GLuint j
)
54 const struct gl_array_attributes
*array
= &vao
->VertexAttrib
[attrib
];
56 const struct gl_vertex_buffer_binding
*binding
=
57 &vao
->BufferBinding
[array
->BufferBindingIndex
];
58 struct gl_buffer_object
*bo
= binding
->BufferObj
;
59 const void *data
= array
->Ptr
;
60 if (_mesa_is_bufferobj(bo
)) {
61 if (!bo
->Mappings
[MAP_INTERNAL
].Pointer
) {
63 bo
->Mappings
[MAP_INTERNAL
].Pointer
=
64 ctx
->Driver
.MapBufferRange(ctx
, 0, bo
->Size
,
65 GL_MAP_READ_BIT
, bo
, MAP_INTERNAL
);
67 data
= ADD_POINTERS(_mesa_vertex_attrib_address(array
, binding
),
68 bo
->Mappings
[MAP_INTERNAL
].Pointer
);
70 switch (array
->Type
) {
73 GLfloat
*f
= (GLfloat
*) ((GLubyte
*) data
+ binding
->Stride
* j
);
75 for (k
= 0; k
< array
->Size
; k
++) {
76 if (IS_INF_OR_NAN(f
[k
]) || f
[k
] >= 1.0e20F
|| f
[k
] <= -1.0e10F
) {
77 printf("Bad array data:\n");
78 printf(" Element[%u].%u = %f\n", j
, k
, f
[k
]);
79 printf(" Array %u at %p\n", attrib
, (void *) array
);
80 printf(" Type 0x%x, Size %d, Stride %d\n",
81 array
->Type
, array
->Size
, binding
->Stride
);
82 printf(" Address/offset %p in Buffer Object %u\n",
83 array
->Ptr
, bo
->Name
);
84 f
[k
] = 1.0F
; /* XXX replace the bad value! */
86 /*assert(!IS_INF_OR_NAN(f[k])); */
98 * Unmap the buffer object referenced by given array, if mapped.
101 unmap_array_buffer(struct gl_context
*ctx
, struct gl_vertex_array_object
*vao
,
104 const struct gl_array_attributes
*array
= &vao
->VertexAttrib
[attrib
];
105 if (array
->Enabled
) {
106 const struct gl_vertex_buffer_binding
*binding
=
107 &vao
->BufferBinding
[array
->BufferBindingIndex
];
108 struct gl_buffer_object
*bo
= binding
->BufferObj
;
109 if (_mesa_is_bufferobj(bo
) && _mesa_bufferobj_mapped(bo
, MAP_INTERNAL
)) {
110 ctx
->Driver
.UnmapBuffer(ctx
, bo
, MAP_INTERNAL
);
117 * Examine the array's data for NaNs, etc.
118 * For debug purposes; not normally used.
121 check_draw_elements_data(struct gl_context
*ctx
, GLsizei count
,
122 GLenum elemType
, const void *elements
,
125 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
130 if (_mesa_is_bufferobj(vao
->IndexBufferObj
)) {
131 elemMap
= ctx
->Driver
.MapBufferRange(ctx
, 0,
132 vao
->IndexBufferObj
->Size
,
134 vao
->IndexBufferObj
, MAP_INTERNAL
);
135 elements
= ADD_POINTERS(elements
, elemMap
);
138 for (i
= 0; i
< count
; i
++) {
143 case GL_UNSIGNED_BYTE
:
144 j
= ((const GLubyte
*) elements
)[i
];
146 case GL_UNSIGNED_SHORT
:
147 j
= ((const GLushort
*) elements
)[i
];
149 case GL_UNSIGNED_INT
:
150 j
= ((const GLuint
*) elements
)[i
];
153 unreachable("Unexpected index buffer type");
156 /* check element j of each enabled array */
157 for (k
= 0; k
< VERT_ATTRIB_MAX
; k
++) {
158 check_array_data(ctx
, vao
, k
, j
);
162 if (_mesa_is_bufferobj(vao
->IndexBufferObj
)) {
163 ctx
->Driver
.UnmapBuffer(ctx
, vao
->IndexBufferObj
, MAP_INTERNAL
);
166 for (k
= 0; k
< VERT_ATTRIB_MAX
; k
++) {
167 unmap_array_buffer(ctx
, vao
, k
);
173 * Check array data, looking for NaNs, etc.
176 check_draw_arrays_data(struct gl_context
*ctx
, GLint start
, GLsizei count
)
183 * Check if we should skip the draw call even after validation was successful.
186 skip_validated_draw(struct gl_context
*ctx
)
190 /* For ES2, we can draw if we have a vertex program/shader). */
191 return ctx
->VertexProgram
._Current
== NULL
;
194 /* For OpenGL ES, only draw if we have vertex positions
196 if (!ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_POS
].Enabled
)
200 case API_OPENGL_CORE
:
201 /* Section 7.3 (Program Objects) of the OpenGL 4.5 Core Profile spec
204 * "If there is no active program for the vertex or fragment shader
205 * stages, the results of vertex and/or fragment processing will be
206 * undefined. However, this is not an error."
208 * The fragment shader is not tested here because other state (e.g.,
209 * GL_RASTERIZER_DISCARD) affects whether or not we actually care.
211 return ctx
->VertexProgram
._Current
== NULL
;
213 case API_OPENGL_COMPAT
:
214 if (ctx
->VertexProgram
._Current
!= NULL
) {
215 /* Draw regardless of whether or not we have any vertex arrays.
216 * (Ex: could draw a point using a constant vertex pos)
220 /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic
223 return (!ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_POS
].Enabled
&&
224 !ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_GENERIC0
].Enabled
);
229 unreachable("Invalid API value in check_valid_to_render()");
237 * Print info/data for glDrawArrays(), for debugging.
240 print_draw_arrays(struct gl_context
*ctx
,
241 GLenum mode
, GLint start
, GLsizei count
)
243 const struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
245 printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
249 for (i
= 0; i
< VERT_ATTRIB_MAX
; ++i
) {
250 const struct gl_array_attributes
*array
= &vao
->VertexAttrib
[i
];
254 const struct gl_vertex_buffer_binding
*binding
=
255 &vao
->BufferBinding
[array
->BufferBindingIndex
];
256 struct gl_buffer_object
*bufObj
= binding
->BufferObj
;
258 printf("attr %s: size %d stride %d enabled %d "
259 "ptr %p Bufobj %u\n",
260 gl_vert_attrib_name((gl_vert_attrib
) i
),
261 array
->Size
, binding
->Stride
, array
->Enabled
,
262 array
->Ptr
, bufObj
->Name
);
264 if (_mesa_is_bufferobj(bufObj
)) {
265 GLubyte
*p
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
,
266 GL_MAP_READ_BIT
, bufObj
,
268 int offset
= (int) (GLintptr
)
269 _mesa_vertex_attrib_address(array
, binding
);
270 float *f
= (float *) (p
+ offset
);
273 int n
= (count
* binding
->Stride
) / 4;
276 printf(" Data at offset %d:\n", offset
);
277 for (i
= 0; i
< n
; i
++) {
278 printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
280 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
287 * Set the vbo->exec->inputs[] pointers to point to the enabled
288 * vertex arrays. This depends on the current vertex program/shader
289 * being executed because of whether or not generic vertex arrays
290 * alias the conventional vertex arrays.
291 * For arrays that aren't enabled, we set the input[attrib] pointer
292 * to point at a zero-stride current value "array".
295 recalculate_input_bindings(struct gl_context
*ctx
)
297 struct vbo_context
*vbo
= vbo_context(ctx
);
298 struct vbo_exec_context
*exec
= &vbo
->exec
;
299 const struct gl_array_attributes
*array
= ctx
->Array
.VAO
->VertexAttrib
;
300 struct gl_vertex_array
*vertexAttrib
= ctx
->Array
.VAO
->_VertexAttrib
;
301 const struct gl_vertex_array
**inputs
= &exec
->array
.inputs
[0];
302 GLbitfield const_inputs
= 0x0;
305 switch (get_program_mode(ctx
)) {
307 /* When no vertex program is active (or the vertex program is generated
308 * from fixed-function state). We put the material values into the
309 * generic slots. This is the only situation where material values
310 * are available as per-vertex attributes.
312 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
313 if (array
[VERT_ATTRIB_FF(i
)].Enabled
)
314 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
316 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
317 const_inputs
|= VERT_BIT(i
);
321 for (i
= 0; i
< MAT_ATTRIB_MAX
; i
++) {
322 inputs
[VERT_ATTRIB_GENERIC(i
)] =
323 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
];
324 const_inputs
|= VERT_BIT_GENERIC(i
);
327 /* Could use just about anything, just to fill in the empty
330 for (i
= MAT_ATTRIB_MAX
; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
331 inputs
[VERT_ATTRIB_GENERIC(i
)] =
332 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
333 const_inputs
|= VERT_BIT_GENERIC(i
);
338 /* There are no shaders in OpenGL ES 1.x, so this code path should be
339 * impossible to reach. The meta code is careful to not use shaders in
342 assert(ctx
->API
!= API_OPENGLES
);
344 /* In the compatibility profile of desktop OpenGL, the generic[0]
345 * attribute array aliases and overrides the legacy position array.
346 * Otherwise, legacy attributes available in the legacy slots,
347 * generic attributes in the generic slots and materials are not
348 * available as per-vertex attributes.
350 * In all other APIs, only the generic attributes exist, and none of the
351 * slots are considered "magic."
353 if (ctx
->API
== API_OPENGL_COMPAT
) {
354 if (array
[VERT_ATTRIB_GENERIC0
].Enabled
)
355 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_GENERIC0
];
356 else if (array
[VERT_ATTRIB_POS
].Enabled
)
357 inputs
[0] = &vertexAttrib
[VERT_ATTRIB_POS
];
359 inputs
[0] = &vbo
->currval
[VBO_ATTRIB_GENERIC0
];
360 const_inputs
|= VERT_BIT_POS
;
363 for (i
= 1; i
< VERT_ATTRIB_FF_MAX
; i
++) {
364 if (array
[VERT_ATTRIB_FF(i
)].Enabled
)
365 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
367 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
368 const_inputs
|= VERT_BIT_FF(i
);
372 for (i
= 1; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
373 if (array
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
374 inputs
[VERT_ATTRIB_GENERIC(i
)] =
375 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
377 inputs
[VERT_ATTRIB_GENERIC(i
)] =
378 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
379 const_inputs
|= VERT_BIT_GENERIC(i
);
383 inputs
[VERT_ATTRIB_GENERIC0
] = inputs
[0];
385 /* Other parts of the code assume that inputs[0] through
386 * inputs[VERT_ATTRIB_FF_MAX] will be non-NULL. However, in OpenGL
387 * ES 2.0+ or OpenGL core profile, none of these arrays should ever
390 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
391 assert(!array
[VERT_ATTRIB_FF(i
)].Enabled
);
393 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
394 const_inputs
|= VERT_BIT_FF(i
);
397 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
398 if (array
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
399 inputs
[VERT_ATTRIB_GENERIC(i
)] =
400 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
402 inputs
[VERT_ATTRIB_GENERIC(i
)] =
403 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
404 const_inputs
|= VERT_BIT_GENERIC(i
);
412 _mesa_set_varying_vp_inputs(ctx
, VERT_BIT_ALL
& (~const_inputs
));
413 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewArray
;
418 * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
419 * These will point to the arrays to actually use for drawing. Some will
420 * be user-provided arrays, other will be zero-stride const-valued arrays.
421 * Note that this might set the _NEW_VARYING_VP_INPUTS dirty flag so state
422 * validation must be done after this call.
425 vbo_bind_arrays(struct gl_context
*ctx
)
427 struct vbo_context
*vbo
= vbo_context(ctx
);
428 struct vbo_exec_context
*exec
= &vbo
->exec
;
430 vbo_draw_method(vbo
, DRAW_ARRAYS
);
432 if (exec
->array
.recalculate_inputs
) {
433 recalculate_input_bindings(ctx
);
434 exec
->array
.recalculate_inputs
= GL_FALSE
;
436 /* Again... because we may have changed the bitmask of per-vertex varying
437 * attributes. If we regenerate the fixed-function vertex program now
438 * we may be able to prune down the number of vertex attributes which we
439 * need in the shader.
442 /* Setting "validating" to TRUE prevents _mesa_update_state from
443 * invalidating what we just did.
445 exec
->validating
= GL_TRUE
;
446 _mesa_update_state(ctx
);
447 exec
->validating
= GL_FALSE
;
454 * Helper function called by the other DrawArrays() functions below.
455 * This is where we handle primitive restart for drawing non-indexed
456 * arrays. If primitive restart is enabled, it typically means
457 * splitting one DrawArrays() into two.
460 vbo_draw_arrays(struct gl_context
*ctx
, GLenum mode
, GLint start
,
461 GLsizei count
, GLuint numInstances
, GLuint baseInstance
,
464 struct vbo_context
*vbo
= vbo_context(ctx
);
465 struct _mesa_prim prim
;
467 if (skip_validated_draw(ctx
))
470 vbo_bind_arrays(ctx
);
472 /* OpenGL 4.5 says that primitive restart is ignored with non-indexed
475 memset(&prim
, 0, sizeof(prim
));
479 prim
.num_instances
= numInstances
;
480 prim
.base_instance
= baseInstance
;
481 prim
.draw_id
= drawID
;
482 prim
.is_indirect
= 0;
486 vbo
->draw_prims(ctx
, &prim
, 1, NULL
,
487 GL_TRUE
, start
, start
+ count
- 1, NULL
, 0, NULL
);
489 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
496 * Execute a glRectf() function.
498 static void GLAPIENTRY
499 vbo_exec_Rectf(GLfloat x1
, GLfloat y1
, GLfloat x2
, GLfloat y2
)
501 GET_CURRENT_CONTEXT(ctx
);
502 ASSERT_OUTSIDE_BEGIN_END(ctx
);
504 CALL_Begin(GET_DISPATCH(), (GL_QUADS
));
505 CALL_Vertex2f(GET_DISPATCH(), (x1
, y1
));
506 CALL_Vertex2f(GET_DISPATCH(), (x2
, y1
));
507 CALL_Vertex2f(GET_DISPATCH(), (x2
, y2
));
508 CALL_Vertex2f(GET_DISPATCH(), (x1
, y2
));
509 CALL_End(GET_DISPATCH(), ());
513 static void GLAPIENTRY
514 vbo_exec_EvalMesh1(GLenum mode
, GLint i1
, GLint i2
)
516 GET_CURRENT_CONTEXT(ctx
);
526 prim
= GL_LINE_STRIP
;
529 _mesa_error(ctx
, GL_INVALID_ENUM
, "glEvalMesh1(mode)");
533 /* No effect if vertex maps disabled.
535 if (!ctx
->Eval
.Map1Vertex4
&& !ctx
->Eval
.Map1Vertex3
)
538 du
= ctx
->Eval
.MapGrid1du
;
539 u
= ctx
->Eval
.MapGrid1u1
+ i1
* du
;
541 CALL_Begin(GET_DISPATCH(), (prim
));
542 for (i
= i1
; i
<= i2
; i
++, u
+= du
) {
543 CALL_EvalCoord1f(GET_DISPATCH(), (u
));
545 CALL_End(GET_DISPATCH(), ());
549 static void GLAPIENTRY
550 vbo_exec_EvalMesh2(GLenum mode
, GLint i1
, GLint i2
, GLint j1
, GLint j2
)
552 GET_CURRENT_CONTEXT(ctx
);
553 GLfloat u
, du
, v
, dv
, v1
, u1
;
562 _mesa_error(ctx
, GL_INVALID_ENUM
, "glEvalMesh2(mode)");
566 /* No effect if vertex maps disabled.
568 if (!ctx
->Eval
.Map2Vertex4
&& !ctx
->Eval
.Map2Vertex3
)
571 du
= ctx
->Eval
.MapGrid2du
;
572 dv
= ctx
->Eval
.MapGrid2dv
;
573 v1
= ctx
->Eval
.MapGrid2v1
+ j1
* dv
;
574 u1
= ctx
->Eval
.MapGrid2u1
+ i1
* du
;
578 CALL_Begin(GET_DISPATCH(), (GL_POINTS
));
579 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
580 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
581 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
584 CALL_End(GET_DISPATCH(), ());
587 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
588 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
589 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
590 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
592 CALL_End(GET_DISPATCH(), ());
594 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
595 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
596 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
597 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
599 CALL_End(GET_DISPATCH(), ());
603 for (v
= v1
, j
= j1
; j
< j2
; j
++, v
+= dv
) {
604 CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP
));
605 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
606 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
607 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
+ dv
));
609 CALL_End(GET_DISPATCH(), ());
617 * Called from glDrawArrays when in immediate mode (not display list mode).
619 static void GLAPIENTRY
620 vbo_exec_DrawArrays(GLenum mode
, GLint start
, GLsizei count
)
622 GET_CURRENT_CONTEXT(ctx
);
624 if (MESA_VERBOSE
& VERBOSE_DRAW
)
625 _mesa_debug(ctx
, "glDrawArrays(%s, %d, %d)\n",
626 _mesa_enum_to_string(mode
), start
, count
);
628 if (_mesa_is_no_error_enabled(ctx
)) {
629 FLUSH_CURRENT(ctx
, 0);
632 _mesa_update_state(ctx
);
634 if (!_mesa_validate_DrawArrays(ctx
, mode
, count
))
639 check_draw_arrays_data(ctx
, start
, count
);
641 vbo_draw_arrays(ctx
, mode
, start
, count
, 1, 0, 0);
644 print_draw_arrays(ctx
, mode
, start
, count
);
649 * Called from glDrawArraysInstanced when in immediate mode (not
650 * display list mode).
652 static void GLAPIENTRY
653 vbo_exec_DrawArraysInstanced(GLenum mode
, GLint start
, GLsizei count
,
654 GLsizei numInstances
)
656 GET_CURRENT_CONTEXT(ctx
);
658 if (MESA_VERBOSE
& VERBOSE_DRAW
)
659 _mesa_debug(ctx
, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
660 _mesa_enum_to_string(mode
), start
, count
, numInstances
);
663 if (_mesa_is_no_error_enabled(ctx
)) {
664 FLUSH_CURRENT(ctx
, 0);
667 _mesa_update_state(ctx
);
669 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, start
, count
,
675 check_draw_arrays_data(ctx
, start
, count
);
677 vbo_draw_arrays(ctx
, mode
, start
, count
, numInstances
, 0, 0);
680 print_draw_arrays(ctx
, mode
, start
, count
);
685 * Called from glDrawArraysInstancedBaseInstance when in immediate mode.
687 static void GLAPIENTRY
688 vbo_exec_DrawArraysInstancedBaseInstance(GLenum mode
, GLint first
,
689 GLsizei count
, GLsizei numInstances
,
692 GET_CURRENT_CONTEXT(ctx
);
694 if (MESA_VERBOSE
& VERBOSE_DRAW
)
696 "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n",
697 _mesa_enum_to_string(mode
), first
, count
,
698 numInstances
, baseInstance
);
700 if (_mesa_is_no_error_enabled(ctx
)) {
701 FLUSH_CURRENT(ctx
, 0);
704 _mesa_update_state(ctx
);
706 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, first
, count
,
712 check_draw_arrays_data(ctx
, first
, count
);
714 vbo_draw_arrays(ctx
, mode
, first
, count
, numInstances
, baseInstance
, 0);
717 print_draw_arrays(ctx
, mode
, first
, count
);
722 * Called from glMultiDrawArrays when in immediate mode.
724 static void GLAPIENTRY
725 vbo_exec_MultiDrawArrays(GLenum mode
, const GLint
*first
,
726 const GLsizei
*count
, GLsizei primcount
)
728 GET_CURRENT_CONTEXT(ctx
);
731 if (MESA_VERBOSE
& VERBOSE_DRAW
)
733 "glMultiDrawArrays(%s, %p, %p, %d)\n",
734 _mesa_enum_to_string(mode
), first
, count
, primcount
);
736 if (_mesa_is_no_error_enabled(ctx
)) {
737 FLUSH_CURRENT(ctx
, 0);
740 _mesa_update_state(ctx
);
742 if (!_mesa_validate_MultiDrawArrays(ctx
, mode
, count
, primcount
))
746 for (i
= 0; i
< primcount
; i
++) {
749 check_draw_arrays_data(ctx
, first
[i
], count
[i
]);
751 /* The GL_ARB_shader_draw_parameters spec adds the following after the
752 * pseudo-code describing glMultiDrawArrays:
754 * "The index of the draw (<i> in the above pseudo-code) may be
755 * read by a vertex shader as <gl_DrawIDARB>, as described in
758 vbo_draw_arrays(ctx
, mode
, first
[i
], count
[i
], 1, 0, i
);
761 print_draw_arrays(ctx
, mode
, first
[i
], count
[i
]);
769 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
774 dump_element_buffer(struct gl_context
*ctx
, GLenum type
)
777 ctx
->Driver
.MapBufferRange(ctx
, 0,
778 ctx
->Array
.VAO
->IndexBufferObj
->Size
,
780 ctx
->Array
.VAO
->IndexBufferObj
,
783 case GL_UNSIGNED_BYTE
:
785 const GLubyte
*us
= (const GLubyte
*) map
;
787 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
; i
++) {
788 printf("%02x ", us
[i
]);
795 case GL_UNSIGNED_SHORT
:
797 const GLushort
*us
= (const GLushort
*) map
;
799 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 2; i
++) {
800 printf("%04x ", us
[i
]);
807 case GL_UNSIGNED_INT
:
809 const GLuint
*us
= (const GLuint
*) map
;
811 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 4; i
++) {
812 printf("%08x ", us
[i
]);
823 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.VAO
->IndexBufferObj
, MAP_INTERNAL
);
829 skip_draw_elements(struct gl_context
*ctx
, GLsizei count
,
830 const GLvoid
*indices
)
835 /* Not using a VBO for indices, so avoid NULL pointer derefs later.
837 if (!_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
) && indices
== NULL
)
840 if (skip_validated_draw(ctx
))
848 * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
849 * Do the rendering for a glDrawElements or glDrawRangeElements call after
850 * we've validated buffer bounds, etc.
853 vbo_validated_drawrangeelements(struct gl_context
*ctx
, GLenum mode
,
854 GLboolean index_bounds_valid
,
855 GLuint start
, GLuint end
,
856 GLsizei count
, GLenum type
,
857 const GLvoid
* indices
,
858 GLint basevertex
, GLuint numInstances
,
861 struct vbo_context
*vbo
= vbo_context(ctx
);
862 struct _mesa_index_buffer ib
;
863 struct _mesa_prim prim
;
865 if (!index_bounds_valid
) {
870 if (skip_draw_elements(ctx
, count
, indices
))
873 vbo_bind_arrays(ctx
);
876 ib
.index_size
= vbo_sizeof_ib_type(type
);
877 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
888 prim
.is_indirect
= 0;
889 prim
.basevertex
= basevertex
;
890 prim
.num_instances
= numInstances
;
891 prim
.base_instance
= baseInstance
;
894 /* Need to give special consideration to rendering a range of
895 * indices starting somewhere above zero. Typically the
896 * application is issuing multiple DrawRangeElements() to draw
897 * successive primitives layed out linearly in the vertex arrays.
898 * Unless the vertex arrays are all in a VBO (or locked as with
899 * CVA), the OpenGL semantics imply that we need to re-read or
900 * re-upload the vertex data on each draw call.
902 * In the case of hardware tnl, we want to avoid starting the
903 * upload at zero, as it will mean every draw call uploads an
904 * increasing amount of not-used vertex data. Worse - in the
905 * software tnl module, all those vertices might be transformed and
906 * lit but never rendered.
908 * If we just upload or transform the vertices in start..end,
909 * however, the indices will be incorrect.
911 * At this level, we don't know exactly what the requirements of
912 * the backend are going to be, though it will likely boil down to
915 * 1) Do nothing, everything is in a VBO and is processed once
918 * 2) Adjust the indices and vertex arrays so that start becomes
921 * Rather than doing anything here, I'll provide a helper function
922 * for the latter case elsewhere.
925 vbo
->draw_prims(ctx
, &prim
, 1, &ib
,
926 index_bounds_valid
, start
, end
, NULL
, 0, NULL
);
928 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
935 * Called by glDrawRangeElementsBaseVertex() in immediate mode.
937 static void GLAPIENTRY
938 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
939 GLsizei count
, GLenum type
,
940 const GLvoid
* indices
, GLint basevertex
)
942 static GLuint warnCount
= 0;
943 GLboolean index_bounds_valid
= GL_TRUE
;
945 /* This is only useful to catch invalid values in the "end" parameter
948 GLuint max_element
= 2 * 1000 * 1000 * 1000; /* just a big number */
950 GET_CURRENT_CONTEXT(ctx
);
952 if (MESA_VERBOSE
& VERBOSE_DRAW
)
954 "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
955 _mesa_enum_to_string(mode
), start
, end
, count
,
956 _mesa_enum_to_string(type
), indices
, basevertex
);
958 if (_mesa_is_no_error_enabled(ctx
)) {
959 FLUSH_CURRENT(ctx
, 0);
962 _mesa_update_state(ctx
);
964 if (!_mesa_validate_DrawRangeElements(ctx
, mode
, start
, end
, count
,
969 if ((int) end
+ basevertex
< 0 || start
+ basevertex
>= max_element
) {
970 /* The application requested we draw using a range of indices that's
971 * outside the bounds of the current VBO. This is invalid and appears
972 * to give undefined results. The safest thing to do is to simply
973 * ignore the range, in case the application botched their range tracking
974 * but did provide valid indices. Also issue a warning indicating that
975 * the application is broken.
977 if (warnCount
++ < 10) {
978 _mesa_warning(ctx
, "glDrawRangeElements(start %u, end %u, "
979 "basevertex %d, count %d, type 0x%x, indices=%p):\n"
980 "\trange is outside VBO bounds (max=%u); ignoring.\n"
981 "\tThis should be fixed in the application.",
982 start
, end
, basevertex
, count
, type
, indices
,
985 index_bounds_valid
= GL_FALSE
;
988 /* NOTE: It's important that 'end' is a reasonable value.
989 * in _tnl_draw_prims(), we use end to determine how many vertices
990 * to transform. If it's too large, we can unnecessarily split prims
991 * or we can read/write out of memory in several different places!
994 /* Catch/fix some potential user errors */
995 if (type
== GL_UNSIGNED_BYTE
) {
996 start
= MIN2(start
, 0xff);
997 end
= MIN2(end
, 0xff);
999 else if (type
== GL_UNSIGNED_SHORT
) {
1000 start
= MIN2(start
, 0xffff);
1001 end
= MIN2(end
, 0xffff);
1005 printf("glDraw[Range]Elements{,BaseVertex}"
1006 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
1008 start
, end
, type
, count
,
1009 ctx
->Array
.VAO
->IndexBufferObj
->Name
, basevertex
);
1012 if ((int) start
+ basevertex
< 0 || end
+ basevertex
>= max_element
)
1013 index_bounds_valid
= GL_FALSE
;
1016 check_draw_elements_data(ctx
, count
, type
, indices
, basevertex
);
1018 (void) check_draw_elements_data
;
1021 if (!index_bounds_valid
) {
1026 vbo_validated_drawrangeelements(ctx
, mode
, index_bounds_valid
, start
, end
,
1027 count
, type
, indices
, basevertex
, 1, 0);
1032 * Called by glDrawRangeElements() in immediate mode.
1034 static void GLAPIENTRY
1035 vbo_exec_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
,
1036 GLsizei count
, GLenum type
, const GLvoid
* indices
)
1038 if (MESA_VERBOSE
& VERBOSE_DRAW
) {
1039 GET_CURRENT_CONTEXT(ctx
);
1041 "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
1042 _mesa_enum_to_string(mode
), start
, end
, count
,
1043 _mesa_enum_to_string(type
), indices
);
1046 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1052 * Called by glDrawElements() in immediate mode.
1054 static void GLAPIENTRY
1055 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1056 const GLvoid
* indices
)
1058 GET_CURRENT_CONTEXT(ctx
);
1060 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1061 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1062 _mesa_enum_to_string(mode
), count
,
1063 _mesa_enum_to_string(type
), indices
);
1065 if (_mesa_is_no_error_enabled(ctx
)) {
1066 FLUSH_CURRENT(ctx
, 0);
1069 _mesa_update_state(ctx
);
1071 if (!_mesa_validate_DrawElements(ctx
, mode
, count
, type
, indices
))
1075 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1076 count
, type
, indices
, 0, 1, 0);
1081 * Called by glDrawElementsBaseVertex() in immediate mode.
1083 static void GLAPIENTRY
1084 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1085 const GLvoid
* indices
, GLint basevertex
)
1087 GET_CURRENT_CONTEXT(ctx
);
1089 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1090 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1091 _mesa_enum_to_string(mode
), count
,
1092 _mesa_enum_to_string(type
), indices
);
1094 if (_mesa_is_no_error_enabled(ctx
)) {
1095 FLUSH_CURRENT(ctx
, 0);
1098 _mesa_update_state(ctx
);
1100 if (!_mesa_validate_DrawElements(ctx
, mode
, count
, type
, indices
))
1104 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1105 count
, type
, indices
, basevertex
, 1, 0);
1110 * Called by glDrawElementsInstanced() in immediate mode.
1112 static void GLAPIENTRY
1113 vbo_exec_DrawElementsInstanced(GLenum mode
, GLsizei count
, GLenum type
,
1114 const GLvoid
* indices
, GLsizei numInstances
)
1116 GET_CURRENT_CONTEXT(ctx
);
1118 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1119 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1120 _mesa_enum_to_string(mode
), count
,
1121 _mesa_enum_to_string(type
), indices
);
1123 if (_mesa_is_no_error_enabled(ctx
)) {
1124 FLUSH_CURRENT(ctx
, 0);
1127 _mesa_update_state(ctx
);
1129 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1130 indices
, numInstances
))
1134 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1135 count
, type
, indices
, 0, numInstances
, 0);
1140 * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
1142 static void GLAPIENTRY
1143 vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode
, GLsizei count
,
1144 GLenum type
, const GLvoid
* indices
,
1145 GLsizei numInstances
,
1148 GET_CURRENT_CONTEXT(ctx
);
1150 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1152 "glDrawElementsInstancedBaseVertex"
1153 "(%s, %d, %s, %p, %d; %d)\n",
1154 _mesa_enum_to_string(mode
), count
,
1155 _mesa_enum_to_string(type
), indices
,
1156 numInstances
, basevertex
);
1158 if (_mesa_is_no_error_enabled(ctx
)) {
1159 FLUSH_CURRENT(ctx
, 0);
1162 _mesa_update_state(ctx
);
1164 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1165 indices
, numInstances
))
1169 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1170 count
, type
, indices
,
1171 basevertex
, numInstances
, 0);
1176 * Called by glDrawElementsInstancedBaseInstance() in immediate mode.
1178 static void GLAPIENTRY
1179 vbo_exec_DrawElementsInstancedBaseInstance(GLenum mode
, GLsizei count
,
1181 const GLvoid
*indices
,
1182 GLsizei numInstances
,
1183 GLuint baseInstance
)
1185 GET_CURRENT_CONTEXT(ctx
);
1187 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1189 "glDrawElementsInstancedBaseInstance"
1190 "(%s, %d, %s, %p, %d, %d)\n",
1191 _mesa_enum_to_string(mode
), count
,
1192 _mesa_enum_to_string(type
), indices
,
1193 numInstances
, baseInstance
);
1195 if (_mesa_is_no_error_enabled(ctx
)) {
1196 FLUSH_CURRENT(ctx
, 0);
1199 _mesa_update_state(ctx
);
1201 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1202 indices
, numInstances
))
1206 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1207 count
, type
, indices
, 0, numInstances
,
1213 * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode.
1215 static void GLAPIENTRY
1216 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode
,
1219 const GLvoid
*indices
,
1220 GLsizei numInstances
,
1222 GLuint baseInstance
)
1224 GET_CURRENT_CONTEXT(ctx
);
1226 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1228 "glDrawElementsInstancedBaseVertexBaseInstance"
1229 "(%s, %d, %s, %p, %d, %d, %d)\n",
1230 _mesa_enum_to_string(mode
), count
,
1231 _mesa_enum_to_string(type
), indices
,
1232 numInstances
, basevertex
, baseInstance
);
1234 if (_mesa_is_no_error_enabled(ctx
)) {
1235 FLUSH_CURRENT(ctx
, 0);
1238 _mesa_update_state(ctx
);
1240 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1241 indices
, numInstances
))
1245 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1246 count
, type
, indices
, basevertex
,
1247 numInstances
, baseInstance
);
1252 * Inner support for both _mesa_MultiDrawElements() and
1253 * _mesa_MultiDrawRangeElements().
1254 * This does the actual rendering after we've checked array indexes, etc.
1257 vbo_validated_multidrawelements(struct gl_context
*ctx
, GLenum mode
,
1258 const GLsizei
*count
, GLenum type
,
1259 const GLvoid
* const *indices
,
1260 GLsizei primcount
, const GLint
*basevertex
)
1262 struct vbo_context
*vbo
= vbo_context(ctx
);
1263 struct _mesa_index_buffer ib
;
1264 struct _mesa_prim
*prim
;
1265 unsigned int index_type_size
= vbo_sizeof_ib_type(type
);
1266 uintptr_t min_index_ptr
, max_index_ptr
;
1267 GLboolean fallback
= GL_FALSE
;
1273 prim
= calloc(primcount
, sizeof(*prim
));
1275 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
1279 vbo_bind_arrays(ctx
);
1281 min_index_ptr
= (uintptr_t) indices
[0];
1283 for (i
= 0; i
< primcount
; i
++) {
1284 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t) indices
[i
]);
1285 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t) indices
[i
] +
1286 index_type_size
* count
[i
]);
1289 /* Check if we can handle this thing as a bunch of index offsets from the
1290 * same index pointer. If we can't, then we have to fall back to doing
1291 * a draw_prims per primitive.
1292 * Check that the difference between each prim's indexes is a multiple of
1293 * the index/element size.
1295 if (index_type_size
!= 1) {
1296 for (i
= 0; i
< primcount
; i
++) {
1297 if ((((uintptr_t) indices
[i
] - min_index_ptr
) % index_type_size
) !=
1305 /* Draw primitives individually if one count is zero, so we can easily skip
1308 for (i
= 0; i
< primcount
; i
++) {
1309 if (count
[i
] == 0) {
1315 /* If the index buffer isn't in a VBO, then treating the application's
1316 * subranges of the index buffer as one large index buffer may lead to
1317 * us reading unmapped memory.
1319 if (!_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
))
1323 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
1324 ib
.index_size
= vbo_sizeof_ib_type(type
);
1325 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1326 ib
.ptr
= (void *) min_index_ptr
;
1328 for (i
= 0; i
< primcount
; i
++) {
1329 prim
[i
].begin
= (i
== 0);
1330 prim
[i
].end
= (i
== primcount
- 1);
1333 prim
[i
].mode
= mode
;
1335 ((uintptr_t) indices
[i
] - min_index_ptr
) / index_type_size
;
1336 prim
[i
].count
= count
[i
];
1337 prim
[i
].indexed
= 1;
1338 prim
[i
].num_instances
= 1;
1339 prim
[i
].base_instance
= 0;
1340 prim
[i
].draw_id
= i
;
1341 prim
[i
].is_indirect
= 0;
1342 if (basevertex
!= NULL
)
1343 prim
[i
].basevertex
= basevertex
[i
];
1345 prim
[i
].basevertex
= 0;
1348 vbo
->draw_prims(ctx
, prim
, primcount
, &ib
,
1349 false, 0, ~0, NULL
, 0, NULL
);
1352 /* render one prim at a time */
1353 for (i
= 0; i
< primcount
; i
++) {
1356 ib
.count
= count
[i
];
1357 ib
.index_size
= vbo_sizeof_ib_type(type
);
1358 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1359 ib
.ptr
= indices
[i
];
1365 prim
[0].mode
= mode
;
1367 prim
[0].count
= count
[i
];
1368 prim
[0].indexed
= 1;
1369 prim
[0].num_instances
= 1;
1370 prim
[0].base_instance
= 0;
1371 prim
[0].draw_id
= i
;
1372 prim
[0].is_indirect
= 0;
1373 if (basevertex
!= NULL
)
1374 prim
[0].basevertex
= basevertex
[i
];
1376 prim
[0].basevertex
= 0;
1378 vbo
->draw_prims(ctx
, prim
, 1, &ib
, false, 0, ~0, NULL
, 0, NULL
);
1384 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1390 static void GLAPIENTRY
1391 vbo_exec_MultiDrawElements(GLenum mode
,
1392 const GLsizei
*count
, GLenum type
,
1393 const GLvoid
* const *indices
, GLsizei primcount
)
1395 GET_CURRENT_CONTEXT(ctx
);
1397 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1401 if (skip_validated_draw(ctx
))
1404 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1409 static void GLAPIENTRY
1410 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
1411 const GLsizei
*count
, GLenum type
,
1412 const GLvoid
* const *indices
,
1414 const GLsizei
*basevertex
)
1416 GET_CURRENT_CONTEXT(ctx
);
1418 if (_mesa_is_no_error_enabled(ctx
)) {
1419 FLUSH_CURRENT(ctx
, 0);
1422 _mesa_update_state(ctx
);
1424 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1429 if (skip_validated_draw(ctx
))
1432 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1438 vbo_draw_transform_feedback(struct gl_context
*ctx
, GLenum mode
,
1439 struct gl_transform_feedback_object
*obj
,
1440 GLuint stream
, GLuint numInstances
)
1442 struct vbo_context
*vbo
= vbo_context(ctx
);
1443 struct _mesa_prim prim
;
1445 if (_mesa_is_no_error_enabled(ctx
)) {
1446 FLUSH_CURRENT(ctx
, 0);
1449 _mesa_update_state(ctx
);
1451 if (!_mesa_validate_DrawTransformFeedback(ctx
, mode
, obj
, stream
,
1457 if (ctx
->Driver
.GetTransformFeedbackVertexCount
&&
1458 (ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
||
1459 !_mesa_all_varyings_in_vbos(ctx
->Array
.VAO
))) {
1461 ctx
->Driver
.GetTransformFeedbackVertexCount(ctx
, obj
, stream
);
1462 vbo_draw_arrays(ctx
, mode
, 0, n
, numInstances
, 0, 0);
1466 if (skip_validated_draw(ctx
))
1469 vbo_bind_arrays(ctx
);
1471 /* init most fields to zero */
1472 memset(&prim
, 0, sizeof(prim
));
1476 prim
.num_instances
= numInstances
;
1477 prim
.base_instance
= 0;
1478 prim
.is_indirect
= 0;
1480 /* Maybe we should do some primitive splitting for primitive restart
1481 * (like in DrawArrays), but we have no way to know how many vertices
1482 * will be rendered. */
1484 vbo
->draw_prims(ctx
, &prim
, 1, NULL
, GL_FALSE
, 0, ~0, obj
, stream
, NULL
);
1486 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1493 * Like DrawArrays, but take the count from a transform feedback object.
1494 * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.
1495 * \param name the transform feedback object
1496 * User still has to setup of the vertex attribute info with
1497 * glVertexPointer, glColorPointer, etc.
1498 * Part of GL_ARB_transform_feedback2.
1500 static void GLAPIENTRY
1501 vbo_exec_DrawTransformFeedback(GLenum mode
, GLuint name
)
1503 GET_CURRENT_CONTEXT(ctx
);
1504 struct gl_transform_feedback_object
*obj
=
1505 _mesa_lookup_transform_feedback_object(ctx
, name
);
1507 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1508 _mesa_debug(ctx
, "glDrawTransformFeedback(%s, %d)\n",
1509 _mesa_enum_to_string(mode
), name
);
1511 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, 1);
1515 static void GLAPIENTRY
1516 vbo_exec_DrawTransformFeedbackStream(GLenum mode
, GLuint name
, GLuint stream
)
1518 GET_CURRENT_CONTEXT(ctx
);
1519 struct gl_transform_feedback_object
*obj
=
1520 _mesa_lookup_transform_feedback_object(ctx
, name
);
1522 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1523 _mesa_debug(ctx
, "glDrawTransformFeedbackStream(%s, %u, %u)\n",
1524 _mesa_enum_to_string(mode
), name
, stream
);
1526 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, 1);
1530 static void GLAPIENTRY
1531 vbo_exec_DrawTransformFeedbackInstanced(GLenum mode
, GLuint name
,
1534 GET_CURRENT_CONTEXT(ctx
);
1535 struct gl_transform_feedback_object
*obj
=
1536 _mesa_lookup_transform_feedback_object(ctx
, name
);
1538 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1539 _mesa_debug(ctx
, "glDrawTransformFeedbackInstanced(%s, %d)\n",
1540 _mesa_enum_to_string(mode
), name
);
1542 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, primcount
);
1546 static void GLAPIENTRY
1547 vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum mode
, GLuint name
,
1551 GET_CURRENT_CONTEXT(ctx
);
1552 struct gl_transform_feedback_object
*obj
=
1553 _mesa_lookup_transform_feedback_object(ctx
, name
);
1555 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1556 _mesa_debug(ctx
, "glDrawTransformFeedbackStreamInstanced"
1557 "(%s, %u, %u, %i)\n",
1558 _mesa_enum_to_string(mode
), name
, stream
, primcount
);
1560 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, primcount
);
1565 vbo_validated_drawarraysindirect(struct gl_context
*ctx
,
1566 GLenum mode
, const GLvoid
*indirect
)
1568 struct vbo_context
*vbo
= vbo_context(ctx
);
1570 vbo_bind_arrays(ctx
);
1572 vbo
->draw_indirect_prims(ctx
, mode
,
1573 ctx
->DrawIndirectBuffer
, (GLsizeiptr
) indirect
,
1574 1 /* draw_count */ , 16 /* stride */ ,
1577 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1583 vbo_validated_multidrawarraysindirect(struct gl_context
*ctx
,
1585 const GLvoid
*indirect
,
1586 GLsizei primcount
, GLsizei stride
)
1588 struct vbo_context
*vbo
= vbo_context(ctx
);
1589 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1594 vbo_bind_arrays(ctx
);
1596 vbo
->draw_indirect_prims(ctx
, mode
, ctx
->DrawIndirectBuffer
, offset
,
1597 primcount
, stride
, NULL
, 0, NULL
);
1599 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1605 vbo_validated_drawelementsindirect(struct gl_context
*ctx
,
1606 GLenum mode
, GLenum type
,
1607 const GLvoid
*indirect
)
1609 struct vbo_context
*vbo
= vbo_context(ctx
);
1610 struct _mesa_index_buffer ib
;
1612 vbo_bind_arrays(ctx
);
1614 ib
.count
= 0; /* unknown */
1615 ib
.index_size
= vbo_sizeof_ib_type(type
);
1616 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1619 vbo
->draw_indirect_prims(ctx
, mode
,
1620 ctx
->DrawIndirectBuffer
, (GLsizeiptr
) indirect
,
1621 1 /* draw_count */ , 20 /* stride */ ,
1624 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1630 vbo_validated_multidrawelementsindirect(struct gl_context
*ctx
,
1631 GLenum mode
, GLenum type
,
1632 const GLvoid
*indirect
,
1633 GLsizei primcount
, GLsizei stride
)
1635 struct vbo_context
*vbo
= vbo_context(ctx
);
1636 struct _mesa_index_buffer ib
;
1637 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1642 vbo_bind_arrays(ctx
);
1644 /* NOTE: IndexBufferObj is guaranteed to be a VBO. */
1646 ib
.count
= 0; /* unknown */
1647 ib
.index_size
= vbo_sizeof_ib_type(type
);
1648 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1651 vbo
->draw_indirect_prims(ctx
, mode
,
1652 ctx
->DrawIndirectBuffer
, offset
,
1653 primcount
, stride
, NULL
, 0, &ib
);
1655 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1661 * Like [Multi]DrawArrays/Elements, but they take most arguments from
1664 static void GLAPIENTRY
1665 vbo_exec_DrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
)
1667 GET_CURRENT_CONTEXT(ctx
);
1669 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1670 _mesa_debug(ctx
, "glDrawArraysIndirect(%s, %p)\n",
1671 _mesa_enum_to_string(mode
), indirect
);
1673 if (_mesa_is_no_error_enabled(ctx
)) {
1674 FLUSH_CURRENT(ctx
, 0);
1677 _mesa_update_state(ctx
);
1679 if (!_mesa_validate_DrawArraysIndirect(ctx
, mode
, indirect
))
1683 if (skip_validated_draw(ctx
))
1686 vbo_validated_drawarraysindirect(ctx
, mode
, indirect
);
1690 static void GLAPIENTRY
1691 vbo_exec_DrawElementsIndirect(GLenum mode
, GLenum type
, const GLvoid
*indirect
)
1693 GET_CURRENT_CONTEXT(ctx
);
1695 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1696 _mesa_debug(ctx
, "glDrawElementsIndirect(%s, %s, %p)\n",
1697 _mesa_enum_to_string(mode
),
1698 _mesa_enum_to_string(type
), indirect
);
1700 if (_mesa_is_no_error_enabled(ctx
)) {
1701 FLUSH_CURRENT(ctx
, 0);
1704 _mesa_update_state(ctx
);
1706 if (!_mesa_validate_DrawElementsIndirect(ctx
, mode
, type
, indirect
))
1710 if (skip_validated_draw(ctx
))
1713 vbo_validated_drawelementsindirect(ctx
, mode
, type
, indirect
);
1717 static void GLAPIENTRY
1718 vbo_exec_MultiDrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
,
1719 GLsizei primcount
, GLsizei stride
)
1721 GET_CURRENT_CONTEXT(ctx
);
1723 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1724 _mesa_debug(ctx
, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n",
1725 _mesa_enum_to_string(mode
), indirect
, primcount
, stride
);
1727 /* If <stride> is zero, the array elements are treated as tightly packed. */
1729 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1731 if (_mesa_is_no_error_enabled(ctx
)) {
1732 FLUSH_CURRENT(ctx
, 0);
1735 _mesa_update_state(ctx
);
1737 if (!_mesa_validate_MultiDrawArraysIndirect(ctx
, mode
, indirect
,
1742 if (skip_validated_draw(ctx
))
1745 vbo_validated_multidrawarraysindirect(ctx
, mode
, indirect
,
1750 static void GLAPIENTRY
1751 vbo_exec_MultiDrawElementsIndirect(GLenum mode
, GLenum type
,
1752 const GLvoid
*indirect
,
1753 GLsizei primcount
, GLsizei stride
)
1755 GET_CURRENT_CONTEXT(ctx
);
1757 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1758 _mesa_debug(ctx
, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n",
1759 _mesa_enum_to_string(mode
),
1760 _mesa_enum_to_string(type
), indirect
, primcount
, stride
);
1762 /* If <stride> is zero, the array elements are treated as tightly packed. */
1764 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1766 if (_mesa_is_no_error_enabled(ctx
)) {
1767 FLUSH_CURRENT(ctx
, 0);
1770 _mesa_update_state(ctx
);
1772 if (!_mesa_validate_MultiDrawElementsIndirect(ctx
, mode
, type
, indirect
,
1777 if (skip_validated_draw(ctx
))
1780 vbo_validated_multidrawelementsindirect(ctx
, mode
, type
, indirect
,
1786 vbo_validated_multidrawarraysindirectcount(struct gl_context
*ctx
,
1790 GLsizei maxdrawcount
,
1793 struct vbo_context
*vbo
= vbo_context(ctx
);
1794 GLsizeiptr offset
= indirect
;
1796 if (maxdrawcount
== 0)
1799 vbo_bind_arrays(ctx
);
1801 vbo
->draw_indirect_prims(ctx
, mode
,
1802 ctx
->DrawIndirectBuffer
, offset
,
1803 maxdrawcount
, stride
,
1804 ctx
->ParameterBuffer
, drawcount
, NULL
);
1806 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1812 vbo_validated_multidrawelementsindirectcount(struct gl_context
*ctx
,
1813 GLenum mode
, GLenum type
,
1816 GLsizei maxdrawcount
,
1819 struct vbo_context
*vbo
= vbo_context(ctx
);
1820 struct _mesa_index_buffer ib
;
1821 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1823 if (maxdrawcount
== 0)
1826 vbo_bind_arrays(ctx
);
1828 /* NOTE: IndexBufferObj is guaranteed to be a VBO. */
1830 ib
.count
= 0; /* unknown */
1831 ib
.index_size
= vbo_sizeof_ib_type(type
);
1832 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1835 vbo
->draw_indirect_prims(ctx
, mode
,
1836 ctx
->DrawIndirectBuffer
, offset
,
1837 maxdrawcount
, stride
,
1838 ctx
->ParameterBuffer
, drawcount
, &ib
);
1840 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1845 static void GLAPIENTRY
1846 vbo_exec_MultiDrawArraysIndirectCount(GLenum mode
, GLintptr indirect
,
1848 GLsizei maxdrawcount
, GLsizei stride
)
1850 GET_CURRENT_CONTEXT(ctx
);
1852 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1853 _mesa_debug(ctx
, "glMultiDrawArraysIndirectCountARB"
1854 "(%s, %lx, %lx, %i, %i)\n",
1855 _mesa_enum_to_string(mode
),
1856 (unsigned long) indirect
, (unsigned long) drawcount
,
1857 maxdrawcount
, stride
);
1859 /* If <stride> is zero, the array elements are treated as tightly packed. */
1861 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1863 if (_mesa_is_no_error_enabled(ctx
)) {
1864 FLUSH_CURRENT(ctx
, 0);
1867 _mesa_update_state(ctx
);
1869 if (!_mesa_validate_MultiDrawArraysIndirectCount(ctx
, mode
,
1870 indirect
, drawcount
,
1871 maxdrawcount
, stride
))
1875 if (skip_validated_draw(ctx
))
1878 vbo_validated_multidrawarraysindirectcount(ctx
, mode
, indirect
, drawcount
,
1879 maxdrawcount
, stride
);
1883 static void GLAPIENTRY
1884 vbo_exec_MultiDrawElementsIndirectCount(GLenum mode
, GLenum type
,
1885 GLintptr indirect
, GLintptr drawcount
,
1886 GLsizei maxdrawcount
, GLsizei stride
)
1888 GET_CURRENT_CONTEXT(ctx
);
1890 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1891 _mesa_debug(ctx
, "glMultiDrawElementsIndirectCountARB"
1892 "(%s, %s, %lx, %lx, %i, %i)\n",
1893 _mesa_enum_to_string(mode
), _mesa_enum_to_string(type
),
1894 (unsigned long) indirect
, (unsigned long) drawcount
,
1895 maxdrawcount
, stride
);
1897 /* If <stride> is zero, the array elements are treated as tightly packed. */
1899 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1901 if (_mesa_is_no_error_enabled(ctx
)) {
1902 FLUSH_CURRENT(ctx
, 0);
1905 _mesa_update_state(ctx
);
1907 if (!_mesa_validate_MultiDrawElementsIndirectCount(ctx
, mode
, type
,
1908 indirect
, drawcount
,
1909 maxdrawcount
, stride
))
1913 if (skip_validated_draw(ctx
))
1916 vbo_validated_multidrawelementsindirectcount(ctx
, mode
, type
, indirect
,
1917 drawcount
, maxdrawcount
,
1923 * Initialize the dispatch table with the VBO functions for drawing.
1926 vbo_initialize_exec_dispatch(const struct gl_context
*ctx
,
1927 struct _glapi_table
*exec
)
1929 SET_DrawArrays(exec
, vbo_exec_DrawArrays
);
1930 SET_DrawElements(exec
, vbo_exec_DrawElements
);
1932 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1933 SET_DrawRangeElements(exec
, vbo_exec_DrawRangeElements
);
1936 SET_MultiDrawArrays(exec
, vbo_exec_MultiDrawArrays
);
1937 SET_MultiDrawElementsEXT(exec
, vbo_exec_MultiDrawElements
);
1939 if (ctx
->API
== API_OPENGL_COMPAT
) {
1940 SET_Rectf(exec
, vbo_exec_Rectf
);
1941 SET_EvalMesh1(exec
, vbo_exec_EvalMesh1
);
1942 SET_EvalMesh2(exec
, vbo_exec_EvalMesh2
);
1945 if (ctx
->API
!= API_OPENGLES
&&
1946 ctx
->Extensions
.ARB_draw_elements_base_vertex
) {
1947 SET_DrawElementsBaseVertex(exec
, vbo_exec_DrawElementsBaseVertex
);
1948 SET_MultiDrawElementsBaseVertex(exec
,
1949 vbo_exec_MultiDrawElementsBaseVertex
);
1951 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1952 SET_DrawRangeElementsBaseVertex(exec
,
1953 vbo_exec_DrawRangeElementsBaseVertex
);
1954 SET_DrawElementsInstancedBaseVertex(exec
,
1955 vbo_exec_DrawElementsInstancedBaseVertex
);
1959 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1960 SET_DrawArraysInstancedBaseInstance(exec
,
1961 vbo_exec_DrawArraysInstancedBaseInstance
);
1962 SET_DrawElementsInstancedBaseInstance(exec
,
1963 vbo_exec_DrawElementsInstancedBaseInstance
);
1964 SET_DrawElementsInstancedBaseVertexBaseInstance(exec
,
1965 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance
);
1968 if (ctx
->API
== API_OPENGL_CORE
|| _mesa_is_gles31(ctx
)) {
1969 SET_DrawArraysIndirect(exec
, vbo_exec_DrawArraysIndirect
);
1970 SET_DrawElementsIndirect(exec
, vbo_exec_DrawElementsIndirect
);
1973 if (ctx
->API
== API_OPENGL_CORE
) {
1974 SET_MultiDrawArraysIndirect(exec
, vbo_exec_MultiDrawArraysIndirect
);
1975 SET_MultiDrawElementsIndirect(exec
, vbo_exec_MultiDrawElementsIndirect
);
1976 SET_MultiDrawArraysIndirectCountARB(exec
,
1977 vbo_exec_MultiDrawArraysIndirectCount
);
1978 SET_MultiDrawElementsIndirectCountARB(exec
,
1979 vbo_exec_MultiDrawElementsIndirectCount
);
1982 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1983 SET_DrawArraysInstancedARB(exec
, vbo_exec_DrawArraysInstanced
);
1984 SET_DrawElementsInstancedARB(exec
, vbo_exec_DrawElementsInstanced
);
1987 if (_mesa_is_desktop_gl(ctx
)) {
1988 SET_DrawTransformFeedback(exec
, vbo_exec_DrawTransformFeedback
);
1989 SET_DrawTransformFeedbackStream(exec
,
1990 vbo_exec_DrawTransformFeedbackStream
);
1991 SET_DrawTransformFeedbackInstanced(exec
,
1992 vbo_exec_DrawTransformFeedbackInstanced
);
1993 SET_DrawTransformFeedbackStreamInstanced(exec
,
1994 vbo_exec_DrawTransformFeedbackStreamInstanced
);
2001 * The following functions are only used for OpenGL ES 1/2 support.
2002 * And some aren't even supported (yet) in ES 1/2.
2007 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
2009 vbo_exec_DrawArrays(mode
, first
, count
);
2014 _mesa_DrawArraysInstanced(GLenum mode
, GLint first
, GLsizei count
,
2017 vbo_exec_DrawArraysInstanced(mode
, first
, count
, primcount
);
2022 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
2023 const GLvoid
*indices
)
2025 vbo_exec_DrawElements(mode
, count
, type
, indices
);
2030 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
2031 const GLvoid
*indices
, GLint basevertex
)
2033 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
2038 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
2039 GLenum type
, const GLvoid
* indices
)
2041 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
2046 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
2047 GLsizei count
, GLenum type
,
2048 const GLvoid
*indices
, GLint basevertex
)
2050 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
2051 indices
, basevertex
);
2056 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
2057 const GLvoid
** indices
, GLsizei primcount
)
2059 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
2064 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
2065 const GLsizei
*count
, GLenum type
,
2066 const GLvoid
**indices
, GLsizei primcount
,
2067 const GLint
*basevertex
)
2069 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
2070 primcount
, basevertex
);
2075 _mesa_DrawTransformFeedback(GLenum mode
, GLuint name
)
2077 vbo_exec_DrawTransformFeedback(mode
, name
);