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_private.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 sizeof_ib_type(GLenum type
)
120 case GL_UNSIGNED_INT
:
121 return sizeof(GLuint
);
122 case GL_UNSIGNED_SHORT
:
123 return sizeof(GLushort
);
124 case GL_UNSIGNED_BYTE
:
125 return sizeof(GLubyte
);
127 assert(!"unsupported index data type");
128 /* In case assert is turned off */
134 * Examine the array's data for NaNs, etc.
135 * For debug purposes; not normally used.
138 check_draw_elements_data(struct gl_context
*ctx
, GLsizei count
,
139 GLenum elemType
, const void *elements
,
142 struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
147 if (_mesa_is_bufferobj(vao
->IndexBufferObj
)) {
148 elemMap
= ctx
->Driver
.MapBufferRange(ctx
, 0,
149 vao
->IndexBufferObj
->Size
,
151 vao
->IndexBufferObj
, MAP_INTERNAL
);
152 elements
= ADD_POINTERS(elements
, elemMap
);
155 for (i
= 0; i
< count
; i
++) {
160 case GL_UNSIGNED_BYTE
:
161 j
= ((const GLubyte
*) elements
)[i
];
163 case GL_UNSIGNED_SHORT
:
164 j
= ((const GLushort
*) elements
)[i
];
166 case GL_UNSIGNED_INT
:
167 j
= ((const GLuint
*) elements
)[i
];
170 unreachable("Unexpected index buffer type");
173 /* check element j of each enabled array */
174 for (k
= 0; k
< VERT_ATTRIB_MAX
; k
++) {
175 check_array_data(ctx
, vao
, k
, j
);
179 if (_mesa_is_bufferobj(vao
->IndexBufferObj
)) {
180 ctx
->Driver
.UnmapBuffer(ctx
, vao
->IndexBufferObj
, MAP_INTERNAL
);
183 for (k
= 0; k
< VERT_ATTRIB_MAX
; k
++) {
184 unmap_array_buffer(ctx
, vao
, k
);
190 * Check array data, looking for NaNs, etc.
193 check_draw_arrays_data(struct gl_context
*ctx
, GLint start
, GLsizei count
)
200 * Check if we should skip the draw call even after validation was successful.
203 skip_validated_draw(struct gl_context
*ctx
)
207 /* For ES2, we can draw if we have a vertex program/shader). */
208 return ctx
->VertexProgram
._Current
== NULL
;
211 /* For OpenGL ES, only draw if we have vertex positions
213 if (!ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_POS
].Enabled
)
217 case API_OPENGL_CORE
:
218 /* Section 7.3 (Program Objects) of the OpenGL 4.5 Core Profile spec
221 * "If there is no active program for the vertex or fragment shader
222 * stages, the results of vertex and/or fragment processing will be
223 * undefined. However, this is not an error."
225 * The fragment shader is not tested here because other state (e.g.,
226 * GL_RASTERIZER_DISCARD) affects whether or not we actually care.
228 return ctx
->VertexProgram
._Current
== NULL
;
230 case API_OPENGL_COMPAT
:
231 if (ctx
->VertexProgram
._Current
!= NULL
) {
232 /* Draw regardless of whether or not we have any vertex arrays.
233 * (Ex: could draw a point using a constant vertex pos)
237 /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic
240 return (!ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_POS
].Enabled
&&
241 !ctx
->Array
.VAO
->VertexAttrib
[VERT_ATTRIB_GENERIC0
].Enabled
);
246 unreachable("Invalid API value in check_valid_to_render()");
254 * Print info/data for glDrawArrays(), for debugging.
257 print_draw_arrays(struct gl_context
*ctx
,
258 GLenum mode
, GLint start
, GLsizei count
)
260 const struct gl_vertex_array_object
*vao
= ctx
->Array
.VAO
;
262 printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
266 for (i
= 0; i
< VERT_ATTRIB_MAX
; ++i
) {
267 const struct gl_array_attributes
*array
= &vao
->VertexAttrib
[i
];
271 const struct gl_vertex_buffer_binding
*binding
=
272 &vao
->BufferBinding
[array
->BufferBindingIndex
];
273 struct gl_buffer_object
*bufObj
= binding
->BufferObj
;
275 printf("attr %s: size %d stride %d enabled %d "
276 "ptr %p Bufobj %u\n",
277 gl_vert_attrib_name((gl_vert_attrib
) i
),
278 array
->Size
, binding
->Stride
, array
->Enabled
,
279 array
->Ptr
, bufObj
->Name
);
281 if (_mesa_is_bufferobj(bufObj
)) {
282 GLubyte
*p
= ctx
->Driver
.MapBufferRange(ctx
, 0, bufObj
->Size
,
283 GL_MAP_READ_BIT
, bufObj
,
285 int offset
= (int) (GLintptr
)
286 _mesa_vertex_attrib_address(array
, binding
);
287 float *f
= (float *) (p
+ offset
);
290 int n
= (count
* binding
->Stride
) / 4;
293 printf(" Data at offset %d:\n", offset
);
294 for (i
= 0; i
< n
; i
++) {
295 printf(" float[%d] = 0x%08x %f\n", i
, k
[i
], f
[i
]);
297 ctx
->Driver
.UnmapBuffer(ctx
, bufObj
, MAP_INTERNAL
);
304 * Set the vbo->exec->inputs[] pointers to point to the enabled
305 * vertex arrays. This depends on the current vertex program/shader
306 * being executed because of whether or not generic vertex arrays
307 * alias the conventional vertex arrays.
308 * For arrays that aren't enabled, we set the input[attrib] pointer
309 * to point at a zero-stride current value "array".
312 recalculate_input_bindings(struct gl_context
*ctx
)
314 struct vbo_context
*vbo
= vbo_context(ctx
);
315 struct vbo_exec_context
*exec
= &vbo
->exec
;
316 const struct gl_array_attributes
*array
= ctx
->Array
.VAO
->VertexAttrib
;
317 struct gl_vertex_array
*vertexAttrib
= ctx
->Array
.VAO
->_VertexAttrib
;
318 const struct gl_vertex_array
**inputs
= &exec
->array
.inputs
[0];
319 GLbitfield const_inputs
= 0x0;
322 const enum vp_mode program_mode
= get_vp_mode(ctx
);
323 switch (program_mode
) {
325 /* When no vertex program is active (or the vertex program is generated
326 * from fixed-function state). We put the material values into the
327 * generic slots. This is the only situation where material values
328 * are available as per-vertex attributes.
330 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
331 if (array
[VERT_ATTRIB_FF(i
)].Enabled
)
332 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
334 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
335 const_inputs
|= VERT_BIT_FF(i
);
339 /* Could use just about anything, just to fill in the empty
342 for (i
= 0; i
< VERT_ATTRIB_MAT0
; i
++) {
343 inputs
[VERT_ATTRIB_GENERIC(i
)] =
344 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
345 const_inputs
|= VERT_BIT_GENERIC(i
);
348 for (i
= 0; i
< VERT_ATTRIB_MAT_MAX
; i
++) {
349 inputs
[VERT_ATTRIB_MAT(i
)] =
350 &vbo
->currval
[VBO_ATTRIB_MAT_FRONT_AMBIENT
+ i
];
351 const_inputs
|= VERT_BIT_MAT(i
);
356 /* There are no shaders in OpenGL ES 1.x, so this code path should be
357 * impossible to reach. The meta code is careful to not use shaders in
360 assert(ctx
->API
!= API_OPENGLES
);
362 /* In the compatibility profile of desktop OpenGL, the generic[0]
363 * attribute array aliases and overrides the legacy position array.
364 * Otherwise, legacy attributes available in the legacy slots,
365 * generic attributes in the generic slots and materials are not
366 * available as per-vertex attributes.
368 * In all other APIs, only the generic attributes exist, and none of the
369 * slots are considered "magic."
371 if (ctx
->API
== API_OPENGL_COMPAT
) {
372 if (array
[VERT_ATTRIB_GENERIC0
].Enabled
)
373 inputs
[VERT_ATTRIB_POS
] = &vertexAttrib
[VERT_ATTRIB_GENERIC0
];
374 else if (array
[VERT_ATTRIB_POS
].Enabled
)
375 inputs
[VERT_ATTRIB_POS
] = &vertexAttrib
[VERT_ATTRIB_POS
];
377 inputs
[VERT_ATTRIB_POS
] = &vbo
->currval
[VBO_ATTRIB_GENERIC0
];
378 const_inputs
|= VERT_BIT_POS
;
381 for (i
= 1; i
< VERT_ATTRIB_FF_MAX
; i
++) {
382 if (array
[VERT_ATTRIB_FF(i
)].Enabled
)
383 inputs
[i
] = &vertexAttrib
[VERT_ATTRIB_FF(i
)];
385 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
386 const_inputs
|= VERT_BIT_FF(i
);
390 for (i
= 1; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
391 if (array
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
392 inputs
[VERT_ATTRIB_GENERIC(i
)] =
393 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
395 inputs
[VERT_ATTRIB_GENERIC(i
)] =
396 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
397 const_inputs
|= VERT_BIT_GENERIC(i
);
401 inputs
[VERT_ATTRIB_GENERIC0
] = inputs
[0];
403 /* Other parts of the code assume that inputs[0] through
404 * inputs[VERT_ATTRIB_FF_MAX] will be non-NULL. However, in OpenGL
405 * ES 2.0+ or OpenGL core profile, none of these arrays should ever
408 for (i
= 0; i
< VERT_ATTRIB_FF_MAX
; i
++) {
409 assert(!array
[VERT_ATTRIB_FF(i
)].Enabled
);
411 inputs
[i
] = &vbo
->currval
[VBO_ATTRIB_POS
+ i
];
412 const_inputs
|= VERT_BIT_FF(i
);
415 for (i
= 0; i
< VERT_ATTRIB_GENERIC_MAX
; i
++) {
416 if (array
[VERT_ATTRIB_GENERIC(i
)].Enabled
)
417 inputs
[VERT_ATTRIB_GENERIC(i
)] =
418 &vertexAttrib
[VERT_ATTRIB_GENERIC(i
)];
420 inputs
[VERT_ATTRIB_GENERIC(i
)] =
421 &vbo
->currval
[VBO_ATTRIB_GENERIC0
+ i
];
422 const_inputs
|= VERT_BIT_GENERIC(i
);
432 _mesa_set_varying_vp_inputs(ctx
, VERT_BIT_ALL
& (~const_inputs
));
433 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewArray
;
438 * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
439 * These will point to the arrays to actually use for drawing. Some will
440 * be user-provided arrays, other will be zero-stride const-valued arrays.
441 * Note that this might set the _NEW_VARYING_VP_INPUTS dirty flag so state
442 * validation must be done after this call.
445 vbo_bind_arrays(struct gl_context
*ctx
)
447 struct vbo_context
*vbo
= vbo_context(ctx
);
448 struct vbo_exec_context
*exec
= &vbo
->exec
;
450 _mesa_set_drawing_arrays(ctx
, vbo
->exec
.array
.inputs
);
452 if (exec
->array
.recalculate_inputs
) {
453 recalculate_input_bindings(ctx
);
454 exec
->array
.recalculate_inputs
= GL_FALSE
;
456 /* Again... because we may have changed the bitmask of per-vertex varying
457 * attributes. If we regenerate the fixed-function vertex program now
458 * we may be able to prune down the number of vertex attributes which we
459 * need in the shader.
462 /* Setting "validating" to TRUE prevents _mesa_update_state from
463 * invalidating what we just did.
465 exec
->validating
= GL_TRUE
;
466 _mesa_update_state(ctx
);
467 exec
->validating
= GL_FALSE
;
474 * Helper function called by the other DrawArrays() functions below.
475 * This is where we handle primitive restart for drawing non-indexed
476 * arrays. If primitive restart is enabled, it typically means
477 * splitting one DrawArrays() into two.
480 vbo_draw_arrays(struct gl_context
*ctx
, GLenum mode
, GLint start
,
481 GLsizei count
, GLuint numInstances
, GLuint baseInstance
,
484 struct vbo_context
*vbo
= vbo_context(ctx
);
485 struct _mesa_prim prim
;
487 if (skip_validated_draw(ctx
))
490 vbo_bind_arrays(ctx
);
492 /* OpenGL 4.5 says that primitive restart is ignored with non-indexed
495 memset(&prim
, 0, sizeof(prim
));
499 prim
.num_instances
= numInstances
;
500 prim
.base_instance
= baseInstance
;
501 prim
.draw_id
= drawID
;
502 prim
.is_indirect
= 0;
506 vbo
->draw_prims(ctx
, &prim
, 1, NULL
,
507 GL_TRUE
, start
, start
+ count
- 1, NULL
, 0, NULL
);
509 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
516 * Execute a glRectf() function.
518 static void GLAPIENTRY
519 vbo_exec_Rectf(GLfloat x1
, GLfloat y1
, GLfloat x2
, GLfloat y2
)
521 GET_CURRENT_CONTEXT(ctx
);
522 ASSERT_OUTSIDE_BEGIN_END(ctx
);
524 CALL_Begin(GET_DISPATCH(), (GL_QUADS
));
525 CALL_Vertex2f(GET_DISPATCH(), (x1
, y1
));
526 CALL_Vertex2f(GET_DISPATCH(), (x2
, y1
));
527 CALL_Vertex2f(GET_DISPATCH(), (x2
, y2
));
528 CALL_Vertex2f(GET_DISPATCH(), (x1
, y2
));
529 CALL_End(GET_DISPATCH(), ());
533 static void GLAPIENTRY
534 vbo_exec_EvalMesh1(GLenum mode
, GLint i1
, GLint i2
)
536 GET_CURRENT_CONTEXT(ctx
);
546 prim
= GL_LINE_STRIP
;
549 _mesa_error(ctx
, GL_INVALID_ENUM
, "glEvalMesh1(mode)");
553 /* No effect if vertex maps disabled.
555 if (!ctx
->Eval
.Map1Vertex4
&& !ctx
->Eval
.Map1Vertex3
)
558 du
= ctx
->Eval
.MapGrid1du
;
559 u
= ctx
->Eval
.MapGrid1u1
+ i1
* du
;
561 CALL_Begin(GET_DISPATCH(), (prim
));
562 for (i
= i1
; i
<= i2
; i
++, u
+= du
) {
563 CALL_EvalCoord1f(GET_DISPATCH(), (u
));
565 CALL_End(GET_DISPATCH(), ());
569 static void GLAPIENTRY
570 vbo_exec_EvalMesh2(GLenum mode
, GLint i1
, GLint i2
, GLint j1
, GLint j2
)
572 GET_CURRENT_CONTEXT(ctx
);
573 GLfloat u
, du
, v
, dv
, v1
, u1
;
582 _mesa_error(ctx
, GL_INVALID_ENUM
, "glEvalMesh2(mode)");
586 /* No effect if vertex maps disabled.
588 if (!ctx
->Eval
.Map2Vertex4
&& !ctx
->Eval
.Map2Vertex3
)
591 du
= ctx
->Eval
.MapGrid2du
;
592 dv
= ctx
->Eval
.MapGrid2dv
;
593 v1
= ctx
->Eval
.MapGrid2v1
+ j1
* dv
;
594 u1
= ctx
->Eval
.MapGrid2u1
+ i1
* du
;
598 CALL_Begin(GET_DISPATCH(), (GL_POINTS
));
599 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
600 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
601 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
604 CALL_End(GET_DISPATCH(), ());
607 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
608 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
609 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
610 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
612 CALL_End(GET_DISPATCH(), ());
614 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
615 CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP
));
616 for (v
= v1
, j
= j1
; j
<= j2
; j
++, v
+= dv
) {
617 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
619 CALL_End(GET_DISPATCH(), ());
623 for (v
= v1
, j
= j1
; j
< j2
; j
++, v
+= dv
) {
624 CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP
));
625 for (u
= u1
, i
= i1
; i
<= i2
; i
++, u
+= du
) {
626 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
));
627 CALL_EvalCoord2f(GET_DISPATCH(), (u
, v
+ dv
));
629 CALL_End(GET_DISPATCH(), ());
637 * Called from glDrawArrays when in immediate mode (not display list mode).
639 static void GLAPIENTRY
640 vbo_exec_DrawArrays(GLenum mode
, GLint start
, GLsizei count
)
642 GET_CURRENT_CONTEXT(ctx
);
644 if (MESA_VERBOSE
& VERBOSE_DRAW
)
645 _mesa_debug(ctx
, "glDrawArrays(%s, %d, %d)\n",
646 _mesa_enum_to_string(mode
), start
, count
);
648 if (_mesa_is_no_error_enabled(ctx
)) {
649 FLUSH_CURRENT(ctx
, 0);
652 _mesa_update_state(ctx
);
654 if (!_mesa_validate_DrawArrays(ctx
, mode
, count
))
659 check_draw_arrays_data(ctx
, start
, count
);
661 vbo_draw_arrays(ctx
, mode
, start
, count
, 1, 0, 0);
664 print_draw_arrays(ctx
, mode
, start
, count
);
669 * Called from glDrawArraysInstanced when in immediate mode (not
670 * display list mode).
672 static void GLAPIENTRY
673 vbo_exec_DrawArraysInstanced(GLenum mode
, GLint start
, GLsizei count
,
674 GLsizei numInstances
)
676 GET_CURRENT_CONTEXT(ctx
);
678 if (MESA_VERBOSE
& VERBOSE_DRAW
)
679 _mesa_debug(ctx
, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
680 _mesa_enum_to_string(mode
), start
, count
, numInstances
);
683 if (_mesa_is_no_error_enabled(ctx
)) {
684 FLUSH_CURRENT(ctx
, 0);
687 _mesa_update_state(ctx
);
689 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, start
, count
,
695 check_draw_arrays_data(ctx
, start
, count
);
697 vbo_draw_arrays(ctx
, mode
, start
, count
, numInstances
, 0, 0);
700 print_draw_arrays(ctx
, mode
, start
, count
);
705 * Called from glDrawArraysInstancedBaseInstance when in immediate mode.
707 static void GLAPIENTRY
708 vbo_exec_DrawArraysInstancedBaseInstance(GLenum mode
, GLint first
,
709 GLsizei count
, GLsizei numInstances
,
712 GET_CURRENT_CONTEXT(ctx
);
714 if (MESA_VERBOSE
& VERBOSE_DRAW
)
716 "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n",
717 _mesa_enum_to_string(mode
), first
, count
,
718 numInstances
, baseInstance
);
720 if (_mesa_is_no_error_enabled(ctx
)) {
721 FLUSH_CURRENT(ctx
, 0);
724 _mesa_update_state(ctx
);
726 if (!_mesa_validate_DrawArraysInstanced(ctx
, mode
, first
, count
,
732 check_draw_arrays_data(ctx
, first
, count
);
734 vbo_draw_arrays(ctx
, mode
, first
, count
, numInstances
, baseInstance
, 0);
737 print_draw_arrays(ctx
, mode
, first
, count
);
742 * Called from glMultiDrawArrays when in immediate mode.
744 static void GLAPIENTRY
745 vbo_exec_MultiDrawArrays(GLenum mode
, const GLint
*first
,
746 const GLsizei
*count
, GLsizei primcount
)
748 GET_CURRENT_CONTEXT(ctx
);
751 if (MESA_VERBOSE
& VERBOSE_DRAW
)
753 "glMultiDrawArrays(%s, %p, %p, %d)\n",
754 _mesa_enum_to_string(mode
), first
, count
, primcount
);
756 if (_mesa_is_no_error_enabled(ctx
)) {
757 FLUSH_CURRENT(ctx
, 0);
760 _mesa_update_state(ctx
);
762 if (!_mesa_validate_MultiDrawArrays(ctx
, mode
, count
, primcount
))
766 for (i
= 0; i
< primcount
; i
++) {
769 check_draw_arrays_data(ctx
, first
[i
], count
[i
]);
771 /* The GL_ARB_shader_draw_parameters spec adds the following after the
772 * pseudo-code describing glMultiDrawArrays:
774 * "The index of the draw (<i> in the above pseudo-code) may be
775 * read by a vertex shader as <gl_DrawIDARB>, as described in
778 vbo_draw_arrays(ctx
, mode
, first
[i
], count
[i
], 1, 0, i
);
781 print_draw_arrays(ctx
, mode
, first
[i
], count
[i
]);
789 * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
794 dump_element_buffer(struct gl_context
*ctx
, GLenum type
)
797 ctx
->Driver
.MapBufferRange(ctx
, 0,
798 ctx
->Array
.VAO
->IndexBufferObj
->Size
,
800 ctx
->Array
.VAO
->IndexBufferObj
,
803 case GL_UNSIGNED_BYTE
:
805 const GLubyte
*us
= (const GLubyte
*) map
;
807 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
; i
++) {
808 printf("%02x ", us
[i
]);
815 case GL_UNSIGNED_SHORT
:
817 const GLushort
*us
= (const GLushort
*) map
;
819 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 2; i
++) {
820 printf("%04x ", us
[i
]);
827 case GL_UNSIGNED_INT
:
829 const GLuint
*us
= (const GLuint
*) map
;
831 for (i
= 0; i
< ctx
->Array
.VAO
->IndexBufferObj
->Size
/ 4; i
++) {
832 printf("%08x ", us
[i
]);
843 ctx
->Driver
.UnmapBuffer(ctx
, ctx
->Array
.VAO
->IndexBufferObj
, MAP_INTERNAL
);
849 skip_draw_elements(struct gl_context
*ctx
, GLsizei count
,
850 const GLvoid
*indices
)
855 /* Not using a VBO for indices, so avoid NULL pointer derefs later.
857 if (!_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
) && indices
== NULL
)
860 if (skip_validated_draw(ctx
))
868 * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
869 * Do the rendering for a glDrawElements or glDrawRangeElements call after
870 * we've validated buffer bounds, etc.
873 vbo_validated_drawrangeelements(struct gl_context
*ctx
, GLenum mode
,
874 GLboolean index_bounds_valid
,
875 GLuint start
, GLuint end
,
876 GLsizei count
, GLenum type
,
877 const GLvoid
* indices
,
878 GLint basevertex
, GLuint numInstances
,
881 struct vbo_context
*vbo
= vbo_context(ctx
);
882 struct _mesa_index_buffer ib
;
883 struct _mesa_prim prim
;
885 if (!index_bounds_valid
) {
890 if (skip_draw_elements(ctx
, count
, indices
))
893 vbo_bind_arrays(ctx
);
896 ib
.index_size
= sizeof_ib_type(type
);
897 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
908 prim
.is_indirect
= 0;
909 prim
.basevertex
= basevertex
;
910 prim
.num_instances
= numInstances
;
911 prim
.base_instance
= baseInstance
;
914 /* Need to give special consideration to rendering a range of
915 * indices starting somewhere above zero. Typically the
916 * application is issuing multiple DrawRangeElements() to draw
917 * successive primitives layed out linearly in the vertex arrays.
918 * Unless the vertex arrays are all in a VBO (or locked as with
919 * CVA), the OpenGL semantics imply that we need to re-read or
920 * re-upload the vertex data on each draw call.
922 * In the case of hardware tnl, we want to avoid starting the
923 * upload at zero, as it will mean every draw call uploads an
924 * increasing amount of not-used vertex data. Worse - in the
925 * software tnl module, all those vertices might be transformed and
926 * lit but never rendered.
928 * If we just upload or transform the vertices in start..end,
929 * however, the indices will be incorrect.
931 * At this level, we don't know exactly what the requirements of
932 * the backend are going to be, though it will likely boil down to
935 * 1) Do nothing, everything is in a VBO and is processed once
938 * 2) Adjust the indices and vertex arrays so that start becomes
941 * Rather than doing anything here, I'll provide a helper function
942 * for the latter case elsewhere.
945 vbo
->draw_prims(ctx
, &prim
, 1, &ib
,
946 index_bounds_valid
, start
, end
, NULL
, 0, NULL
);
948 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
955 * Called by glDrawRangeElementsBaseVertex() in immediate mode.
957 static void GLAPIENTRY
958 vbo_exec_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
959 GLsizei count
, GLenum type
,
960 const GLvoid
* indices
, GLint basevertex
)
962 static GLuint warnCount
= 0;
963 GLboolean index_bounds_valid
= GL_TRUE
;
965 /* This is only useful to catch invalid values in the "end" parameter
968 GLuint max_element
= 2 * 1000 * 1000 * 1000; /* just a big number */
970 GET_CURRENT_CONTEXT(ctx
);
972 if (MESA_VERBOSE
& VERBOSE_DRAW
)
974 "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
975 _mesa_enum_to_string(mode
), start
, end
, count
,
976 _mesa_enum_to_string(type
), indices
, basevertex
);
978 if (_mesa_is_no_error_enabled(ctx
)) {
979 FLUSH_CURRENT(ctx
, 0);
982 _mesa_update_state(ctx
);
984 if (!_mesa_validate_DrawRangeElements(ctx
, mode
, start
, end
, count
,
989 if ((int) end
+ basevertex
< 0 || start
+ basevertex
>= max_element
) {
990 /* The application requested we draw using a range of indices that's
991 * outside the bounds of the current VBO. This is invalid and appears
992 * to give undefined results. The safest thing to do is to simply
993 * ignore the range, in case the application botched their range tracking
994 * but did provide valid indices. Also issue a warning indicating that
995 * the application is broken.
997 if (warnCount
++ < 10) {
998 _mesa_warning(ctx
, "glDrawRangeElements(start %u, end %u, "
999 "basevertex %d, count %d, type 0x%x, indices=%p):\n"
1000 "\trange is outside VBO bounds (max=%u); ignoring.\n"
1001 "\tThis should be fixed in the application.",
1002 start
, end
, basevertex
, count
, type
, indices
,
1005 index_bounds_valid
= GL_FALSE
;
1008 /* NOTE: It's important that 'end' is a reasonable value.
1009 * in _tnl_draw_prims(), we use end to determine how many vertices
1010 * to transform. If it's too large, we can unnecessarily split prims
1011 * or we can read/write out of memory in several different places!
1014 /* Catch/fix some potential user errors */
1015 if (type
== GL_UNSIGNED_BYTE
) {
1016 start
= MIN2(start
, 0xff);
1017 end
= MIN2(end
, 0xff);
1019 else if (type
== GL_UNSIGNED_SHORT
) {
1020 start
= MIN2(start
, 0xffff);
1021 end
= MIN2(end
, 0xffff);
1025 printf("glDraw[Range]Elements{,BaseVertex}"
1026 "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
1028 start
, end
, type
, count
,
1029 ctx
->Array
.VAO
->IndexBufferObj
->Name
, basevertex
);
1032 if ((int) start
+ basevertex
< 0 || end
+ basevertex
>= max_element
)
1033 index_bounds_valid
= GL_FALSE
;
1036 check_draw_elements_data(ctx
, count
, type
, indices
, basevertex
);
1038 (void) check_draw_elements_data
;
1041 if (!index_bounds_valid
) {
1046 vbo_validated_drawrangeelements(ctx
, mode
, index_bounds_valid
, start
, end
,
1047 count
, type
, indices
, basevertex
, 1, 0);
1052 * Called by glDrawRangeElements() in immediate mode.
1054 static void GLAPIENTRY
1055 vbo_exec_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
,
1056 GLsizei count
, GLenum type
, const GLvoid
* indices
)
1058 if (MESA_VERBOSE
& VERBOSE_DRAW
) {
1059 GET_CURRENT_CONTEXT(ctx
);
1061 "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
1062 _mesa_enum_to_string(mode
), start
, end
, count
,
1063 _mesa_enum_to_string(type
), indices
);
1066 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
1072 * Called by glDrawElements() in immediate mode.
1074 static void GLAPIENTRY
1075 vbo_exec_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
1076 const GLvoid
* indices
)
1078 GET_CURRENT_CONTEXT(ctx
);
1080 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1081 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1082 _mesa_enum_to_string(mode
), count
,
1083 _mesa_enum_to_string(type
), indices
);
1085 if (_mesa_is_no_error_enabled(ctx
)) {
1086 FLUSH_CURRENT(ctx
, 0);
1089 _mesa_update_state(ctx
);
1091 if (!_mesa_validate_DrawElements(ctx
, mode
, count
, type
, indices
))
1095 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1096 count
, type
, indices
, 0, 1, 0);
1101 * Called by glDrawElementsBaseVertex() in immediate mode.
1103 static void GLAPIENTRY
1104 vbo_exec_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
1105 const GLvoid
* indices
, GLint basevertex
)
1107 GET_CURRENT_CONTEXT(ctx
);
1109 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1110 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1111 _mesa_enum_to_string(mode
), count
,
1112 _mesa_enum_to_string(type
), indices
);
1114 if (_mesa_is_no_error_enabled(ctx
)) {
1115 FLUSH_CURRENT(ctx
, 0);
1118 _mesa_update_state(ctx
);
1120 if (!_mesa_validate_DrawElements(ctx
, mode
, count
, type
, indices
))
1124 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1125 count
, type
, indices
, basevertex
, 1, 0);
1130 * Called by glDrawElementsInstanced() in immediate mode.
1132 static void GLAPIENTRY
1133 vbo_exec_DrawElementsInstanced(GLenum mode
, GLsizei count
, GLenum type
,
1134 const GLvoid
* indices
, GLsizei numInstances
)
1136 GET_CURRENT_CONTEXT(ctx
);
1138 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1139 _mesa_debug(ctx
, "glDrawElements(%s, %u, %s, %p)\n",
1140 _mesa_enum_to_string(mode
), count
,
1141 _mesa_enum_to_string(type
), indices
);
1143 if (_mesa_is_no_error_enabled(ctx
)) {
1144 FLUSH_CURRENT(ctx
, 0);
1147 _mesa_update_state(ctx
);
1149 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1150 indices
, numInstances
))
1154 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1155 count
, type
, indices
, 0, numInstances
, 0);
1160 * Called by glDrawElementsInstancedBaseVertex() in immediate mode.
1162 static void GLAPIENTRY
1163 vbo_exec_DrawElementsInstancedBaseVertex(GLenum mode
, GLsizei count
,
1164 GLenum type
, const GLvoid
* indices
,
1165 GLsizei numInstances
,
1168 GET_CURRENT_CONTEXT(ctx
);
1170 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1172 "glDrawElementsInstancedBaseVertex"
1173 "(%s, %d, %s, %p, %d; %d)\n",
1174 _mesa_enum_to_string(mode
), count
,
1175 _mesa_enum_to_string(type
), indices
,
1176 numInstances
, basevertex
);
1178 if (_mesa_is_no_error_enabled(ctx
)) {
1179 FLUSH_CURRENT(ctx
, 0);
1182 _mesa_update_state(ctx
);
1184 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1185 indices
, numInstances
))
1189 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1190 count
, type
, indices
,
1191 basevertex
, numInstances
, 0);
1196 * Called by glDrawElementsInstancedBaseInstance() in immediate mode.
1198 static void GLAPIENTRY
1199 vbo_exec_DrawElementsInstancedBaseInstance(GLenum mode
, GLsizei count
,
1201 const GLvoid
*indices
,
1202 GLsizei numInstances
,
1203 GLuint baseInstance
)
1205 GET_CURRENT_CONTEXT(ctx
);
1207 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1209 "glDrawElementsInstancedBaseInstance"
1210 "(%s, %d, %s, %p, %d, %d)\n",
1211 _mesa_enum_to_string(mode
), count
,
1212 _mesa_enum_to_string(type
), indices
,
1213 numInstances
, baseInstance
);
1215 if (_mesa_is_no_error_enabled(ctx
)) {
1216 FLUSH_CURRENT(ctx
, 0);
1219 _mesa_update_state(ctx
);
1221 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1222 indices
, numInstances
))
1226 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1227 count
, type
, indices
, 0, numInstances
,
1233 * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode.
1235 static void GLAPIENTRY
1236 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode
,
1239 const GLvoid
*indices
,
1240 GLsizei numInstances
,
1242 GLuint baseInstance
)
1244 GET_CURRENT_CONTEXT(ctx
);
1246 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1248 "glDrawElementsInstancedBaseVertexBaseInstance"
1249 "(%s, %d, %s, %p, %d, %d, %d)\n",
1250 _mesa_enum_to_string(mode
), count
,
1251 _mesa_enum_to_string(type
), indices
,
1252 numInstances
, basevertex
, baseInstance
);
1254 if (_mesa_is_no_error_enabled(ctx
)) {
1255 FLUSH_CURRENT(ctx
, 0);
1258 _mesa_update_state(ctx
);
1260 if (!_mesa_validate_DrawElementsInstanced(ctx
, mode
, count
, type
,
1261 indices
, numInstances
))
1265 vbo_validated_drawrangeelements(ctx
, mode
, GL_FALSE
, 0, ~0,
1266 count
, type
, indices
, basevertex
,
1267 numInstances
, baseInstance
);
1272 * Inner support for both _mesa_MultiDrawElements() and
1273 * _mesa_MultiDrawRangeElements().
1274 * This does the actual rendering after we've checked array indexes, etc.
1277 vbo_validated_multidrawelements(struct gl_context
*ctx
, GLenum mode
,
1278 const GLsizei
*count
, GLenum type
,
1279 const GLvoid
* const *indices
,
1280 GLsizei primcount
, const GLint
*basevertex
)
1282 struct vbo_context
*vbo
= vbo_context(ctx
);
1283 struct _mesa_index_buffer ib
;
1284 struct _mesa_prim
*prim
;
1285 unsigned int index_type_size
= sizeof_ib_type(type
);
1286 uintptr_t min_index_ptr
, max_index_ptr
;
1287 GLboolean fallback
= GL_FALSE
;
1293 prim
= calloc(primcount
, sizeof(*prim
));
1295 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glMultiDrawElements");
1299 vbo_bind_arrays(ctx
);
1301 min_index_ptr
= (uintptr_t) indices
[0];
1303 for (i
= 0; i
< primcount
; i
++) {
1304 min_index_ptr
= MIN2(min_index_ptr
, (uintptr_t) indices
[i
]);
1305 max_index_ptr
= MAX2(max_index_ptr
, (uintptr_t) indices
[i
] +
1306 index_type_size
* count
[i
]);
1309 /* Check if we can handle this thing as a bunch of index offsets from the
1310 * same index pointer. If we can't, then we have to fall back to doing
1311 * a draw_prims per primitive.
1312 * Check that the difference between each prim's indexes is a multiple of
1313 * the index/element size.
1315 if (index_type_size
!= 1) {
1316 for (i
= 0; i
< primcount
; i
++) {
1317 if ((((uintptr_t) indices
[i
] - min_index_ptr
) % index_type_size
) !=
1325 /* Draw primitives individually if one count is zero, so we can easily skip
1328 for (i
= 0; i
< primcount
; i
++) {
1329 if (count
[i
] == 0) {
1335 /* If the index buffer isn't in a VBO, then treating the application's
1336 * subranges of the index buffer as one large index buffer may lead to
1337 * us reading unmapped memory.
1339 if (!_mesa_is_bufferobj(ctx
->Array
.VAO
->IndexBufferObj
))
1343 ib
.count
= (max_index_ptr
- min_index_ptr
) / index_type_size
;
1344 ib
.index_size
= sizeof_ib_type(type
);
1345 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1346 ib
.ptr
= (void *) min_index_ptr
;
1348 for (i
= 0; i
< primcount
; i
++) {
1349 prim
[i
].begin
= (i
== 0);
1350 prim
[i
].end
= (i
== primcount
- 1);
1353 prim
[i
].mode
= mode
;
1355 ((uintptr_t) indices
[i
] - min_index_ptr
) / index_type_size
;
1356 prim
[i
].count
= count
[i
];
1357 prim
[i
].indexed
= 1;
1358 prim
[i
].num_instances
= 1;
1359 prim
[i
].base_instance
= 0;
1360 prim
[i
].draw_id
= i
;
1361 prim
[i
].is_indirect
= 0;
1362 if (basevertex
!= NULL
)
1363 prim
[i
].basevertex
= basevertex
[i
];
1365 prim
[i
].basevertex
= 0;
1368 vbo
->draw_prims(ctx
, prim
, primcount
, &ib
,
1369 false, 0, ~0, NULL
, 0, NULL
);
1372 /* render one prim at a time */
1373 for (i
= 0; i
< primcount
; i
++) {
1376 ib
.count
= count
[i
];
1377 ib
.index_size
= sizeof_ib_type(type
);
1378 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1379 ib
.ptr
= indices
[i
];
1385 prim
[0].mode
= mode
;
1387 prim
[0].count
= count
[i
];
1388 prim
[0].indexed
= 1;
1389 prim
[0].num_instances
= 1;
1390 prim
[0].base_instance
= 0;
1391 prim
[0].draw_id
= i
;
1392 prim
[0].is_indirect
= 0;
1393 if (basevertex
!= NULL
)
1394 prim
[0].basevertex
= basevertex
[i
];
1396 prim
[0].basevertex
= 0;
1398 vbo
->draw_prims(ctx
, prim
, 1, &ib
, false, 0, ~0, NULL
, 0, NULL
);
1404 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1410 static void GLAPIENTRY
1411 vbo_exec_MultiDrawElements(GLenum mode
,
1412 const GLsizei
*count
, GLenum type
,
1413 const GLvoid
* const *indices
, GLsizei primcount
)
1415 GET_CURRENT_CONTEXT(ctx
);
1417 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1421 if (skip_validated_draw(ctx
))
1424 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1429 static void GLAPIENTRY
1430 vbo_exec_MultiDrawElementsBaseVertex(GLenum mode
,
1431 const GLsizei
*count
, GLenum type
,
1432 const GLvoid
* const *indices
,
1434 const GLsizei
*basevertex
)
1436 GET_CURRENT_CONTEXT(ctx
);
1438 if (_mesa_is_no_error_enabled(ctx
)) {
1439 FLUSH_CURRENT(ctx
, 0);
1442 _mesa_update_state(ctx
);
1444 if (!_mesa_validate_MultiDrawElements(ctx
, mode
, count
, type
, indices
,
1449 if (skip_validated_draw(ctx
))
1452 vbo_validated_multidrawelements(ctx
, mode
, count
, type
, indices
, primcount
,
1458 vbo_draw_transform_feedback(struct gl_context
*ctx
, GLenum mode
,
1459 struct gl_transform_feedback_object
*obj
,
1460 GLuint stream
, GLuint numInstances
)
1462 struct vbo_context
*vbo
= vbo_context(ctx
);
1463 struct _mesa_prim prim
;
1465 if (_mesa_is_no_error_enabled(ctx
)) {
1466 FLUSH_CURRENT(ctx
, 0);
1469 _mesa_update_state(ctx
);
1471 if (!_mesa_validate_DrawTransformFeedback(ctx
, mode
, obj
, stream
,
1477 if (ctx
->Driver
.GetTransformFeedbackVertexCount
&&
1478 (ctx
->Const
.AlwaysUseGetTransformFeedbackVertexCount
||
1479 !_mesa_all_varyings_in_vbos(ctx
->Array
.VAO
))) {
1481 ctx
->Driver
.GetTransformFeedbackVertexCount(ctx
, obj
, stream
);
1482 vbo_draw_arrays(ctx
, mode
, 0, n
, numInstances
, 0, 0);
1486 if (skip_validated_draw(ctx
))
1489 vbo_bind_arrays(ctx
);
1491 /* init most fields to zero */
1492 memset(&prim
, 0, sizeof(prim
));
1496 prim
.num_instances
= numInstances
;
1497 prim
.base_instance
= 0;
1498 prim
.is_indirect
= 0;
1500 /* Maybe we should do some primitive splitting for primitive restart
1501 * (like in DrawArrays), but we have no way to know how many vertices
1502 * will be rendered. */
1504 vbo
->draw_prims(ctx
, &prim
, 1, NULL
, GL_FALSE
, 0, ~0, obj
, stream
, NULL
);
1506 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
) {
1513 * Like DrawArrays, but take the count from a transform feedback object.
1514 * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc.
1515 * \param name the transform feedback object
1516 * User still has to setup of the vertex attribute info with
1517 * glVertexPointer, glColorPointer, etc.
1518 * Part of GL_ARB_transform_feedback2.
1520 static void GLAPIENTRY
1521 vbo_exec_DrawTransformFeedback(GLenum mode
, GLuint name
)
1523 GET_CURRENT_CONTEXT(ctx
);
1524 struct gl_transform_feedback_object
*obj
=
1525 _mesa_lookup_transform_feedback_object(ctx
, name
);
1527 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1528 _mesa_debug(ctx
, "glDrawTransformFeedback(%s, %d)\n",
1529 _mesa_enum_to_string(mode
), name
);
1531 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, 1);
1535 static void GLAPIENTRY
1536 vbo_exec_DrawTransformFeedbackStream(GLenum mode
, GLuint name
, GLuint stream
)
1538 GET_CURRENT_CONTEXT(ctx
);
1539 struct gl_transform_feedback_object
*obj
=
1540 _mesa_lookup_transform_feedback_object(ctx
, name
);
1542 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1543 _mesa_debug(ctx
, "glDrawTransformFeedbackStream(%s, %u, %u)\n",
1544 _mesa_enum_to_string(mode
), name
, stream
);
1546 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, 1);
1550 static void GLAPIENTRY
1551 vbo_exec_DrawTransformFeedbackInstanced(GLenum mode
, GLuint name
,
1554 GET_CURRENT_CONTEXT(ctx
);
1555 struct gl_transform_feedback_object
*obj
=
1556 _mesa_lookup_transform_feedback_object(ctx
, name
);
1558 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1559 _mesa_debug(ctx
, "glDrawTransformFeedbackInstanced(%s, %d)\n",
1560 _mesa_enum_to_string(mode
), name
);
1562 vbo_draw_transform_feedback(ctx
, mode
, obj
, 0, primcount
);
1566 static void GLAPIENTRY
1567 vbo_exec_DrawTransformFeedbackStreamInstanced(GLenum mode
, GLuint name
,
1571 GET_CURRENT_CONTEXT(ctx
);
1572 struct gl_transform_feedback_object
*obj
=
1573 _mesa_lookup_transform_feedback_object(ctx
, name
);
1575 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1576 _mesa_debug(ctx
, "glDrawTransformFeedbackStreamInstanced"
1577 "(%s, %u, %u, %i)\n",
1578 _mesa_enum_to_string(mode
), name
, stream
, primcount
);
1580 vbo_draw_transform_feedback(ctx
, mode
, obj
, stream
, primcount
);
1585 vbo_validated_drawarraysindirect(struct gl_context
*ctx
,
1586 GLenum mode
, const GLvoid
*indirect
)
1588 struct vbo_context
*vbo
= vbo_context(ctx
);
1590 vbo_bind_arrays(ctx
);
1592 vbo
->draw_indirect_prims(ctx
, mode
,
1593 ctx
->DrawIndirectBuffer
, (GLsizeiptr
) indirect
,
1594 1 /* draw_count */ , 16 /* stride */ ,
1597 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1603 vbo_validated_multidrawarraysindirect(struct gl_context
*ctx
,
1605 const GLvoid
*indirect
,
1606 GLsizei primcount
, GLsizei stride
)
1608 struct vbo_context
*vbo
= vbo_context(ctx
);
1609 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1614 vbo_bind_arrays(ctx
);
1616 vbo
->draw_indirect_prims(ctx
, mode
, ctx
->DrawIndirectBuffer
, offset
,
1617 primcount
, stride
, NULL
, 0, NULL
);
1619 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1625 vbo_validated_drawelementsindirect(struct gl_context
*ctx
,
1626 GLenum mode
, GLenum type
,
1627 const GLvoid
*indirect
)
1629 struct vbo_context
*vbo
= vbo_context(ctx
);
1630 struct _mesa_index_buffer ib
;
1632 vbo_bind_arrays(ctx
);
1634 ib
.count
= 0; /* unknown */
1635 ib
.index_size
= sizeof_ib_type(type
);
1636 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1639 vbo
->draw_indirect_prims(ctx
, mode
,
1640 ctx
->DrawIndirectBuffer
, (GLsizeiptr
) indirect
,
1641 1 /* draw_count */ , 20 /* stride */ ,
1644 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1650 vbo_validated_multidrawelementsindirect(struct gl_context
*ctx
,
1651 GLenum mode
, GLenum type
,
1652 const GLvoid
*indirect
,
1653 GLsizei primcount
, GLsizei stride
)
1655 struct vbo_context
*vbo
= vbo_context(ctx
);
1656 struct _mesa_index_buffer ib
;
1657 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1662 vbo_bind_arrays(ctx
);
1664 /* NOTE: IndexBufferObj is guaranteed to be a VBO. */
1666 ib
.count
= 0; /* unknown */
1667 ib
.index_size
= sizeof_ib_type(type
);
1668 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1671 vbo
->draw_indirect_prims(ctx
, mode
,
1672 ctx
->DrawIndirectBuffer
, offset
,
1673 primcount
, stride
, NULL
, 0, &ib
);
1675 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1681 * Like [Multi]DrawArrays/Elements, but they take most arguments from
1684 static void GLAPIENTRY
1685 vbo_exec_DrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
)
1687 GET_CURRENT_CONTEXT(ctx
);
1689 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1690 _mesa_debug(ctx
, "glDrawArraysIndirect(%s, %p)\n",
1691 _mesa_enum_to_string(mode
), indirect
);
1693 if (_mesa_is_no_error_enabled(ctx
)) {
1694 FLUSH_CURRENT(ctx
, 0);
1697 _mesa_update_state(ctx
);
1699 if (!_mesa_validate_DrawArraysIndirect(ctx
, mode
, indirect
))
1703 if (skip_validated_draw(ctx
))
1706 vbo_validated_drawarraysindirect(ctx
, mode
, indirect
);
1710 static void GLAPIENTRY
1711 vbo_exec_DrawElementsIndirect(GLenum mode
, GLenum type
, const GLvoid
*indirect
)
1713 GET_CURRENT_CONTEXT(ctx
);
1715 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1716 _mesa_debug(ctx
, "glDrawElementsIndirect(%s, %s, %p)\n",
1717 _mesa_enum_to_string(mode
),
1718 _mesa_enum_to_string(type
), indirect
);
1720 if (_mesa_is_no_error_enabled(ctx
)) {
1721 FLUSH_CURRENT(ctx
, 0);
1724 _mesa_update_state(ctx
);
1726 if (!_mesa_validate_DrawElementsIndirect(ctx
, mode
, type
, indirect
))
1730 if (skip_validated_draw(ctx
))
1733 vbo_validated_drawelementsindirect(ctx
, mode
, type
, indirect
);
1737 static void GLAPIENTRY
1738 vbo_exec_MultiDrawArraysIndirect(GLenum mode
, const GLvoid
*indirect
,
1739 GLsizei primcount
, GLsizei stride
)
1741 GET_CURRENT_CONTEXT(ctx
);
1743 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1744 _mesa_debug(ctx
, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n",
1745 _mesa_enum_to_string(mode
), indirect
, primcount
, stride
);
1747 /* If <stride> is zero, the array elements are treated as tightly packed. */
1749 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1751 if (_mesa_is_no_error_enabled(ctx
)) {
1752 FLUSH_CURRENT(ctx
, 0);
1755 _mesa_update_state(ctx
);
1757 if (!_mesa_validate_MultiDrawArraysIndirect(ctx
, mode
, indirect
,
1762 if (skip_validated_draw(ctx
))
1765 vbo_validated_multidrawarraysindirect(ctx
, mode
, indirect
,
1770 static void GLAPIENTRY
1771 vbo_exec_MultiDrawElementsIndirect(GLenum mode
, GLenum type
,
1772 const GLvoid
*indirect
,
1773 GLsizei primcount
, GLsizei stride
)
1775 GET_CURRENT_CONTEXT(ctx
);
1777 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1778 _mesa_debug(ctx
, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n",
1779 _mesa_enum_to_string(mode
),
1780 _mesa_enum_to_string(type
), indirect
, primcount
, stride
);
1782 /* If <stride> is zero, the array elements are treated as tightly packed. */
1784 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1786 if (_mesa_is_no_error_enabled(ctx
)) {
1787 FLUSH_CURRENT(ctx
, 0);
1790 _mesa_update_state(ctx
);
1792 if (!_mesa_validate_MultiDrawElementsIndirect(ctx
, mode
, type
, indirect
,
1797 if (skip_validated_draw(ctx
))
1800 vbo_validated_multidrawelementsindirect(ctx
, mode
, type
, indirect
,
1806 vbo_validated_multidrawarraysindirectcount(struct gl_context
*ctx
,
1809 GLintptr drawcount_offset
,
1810 GLsizei maxdrawcount
,
1813 struct vbo_context
*vbo
= vbo_context(ctx
);
1814 GLsizeiptr offset
= indirect
;
1816 if (maxdrawcount
== 0)
1819 vbo_bind_arrays(ctx
);
1821 vbo
->draw_indirect_prims(ctx
, mode
,
1822 ctx
->DrawIndirectBuffer
, offset
,
1823 maxdrawcount
, stride
,
1824 ctx
->ParameterBuffer
, drawcount_offset
, NULL
);
1826 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1832 vbo_validated_multidrawelementsindirectcount(struct gl_context
*ctx
,
1833 GLenum mode
, GLenum type
,
1835 GLintptr drawcount_offset
,
1836 GLsizei maxdrawcount
,
1839 struct vbo_context
*vbo
= vbo_context(ctx
);
1840 struct _mesa_index_buffer ib
;
1841 GLsizeiptr offset
= (GLsizeiptr
) indirect
;
1843 if (maxdrawcount
== 0)
1846 vbo_bind_arrays(ctx
);
1848 /* NOTE: IndexBufferObj is guaranteed to be a VBO. */
1850 ib
.count
= 0; /* unknown */
1851 ib
.index_size
= sizeof_ib_type(type
);
1852 ib
.obj
= ctx
->Array
.VAO
->IndexBufferObj
;
1855 vbo
->draw_indirect_prims(ctx
, mode
,
1856 ctx
->DrawIndirectBuffer
, offset
,
1857 maxdrawcount
, stride
,
1858 ctx
->ParameterBuffer
, drawcount_offset
, &ib
);
1860 if (MESA_DEBUG_FLAGS
& DEBUG_ALWAYS_FLUSH
)
1865 static void GLAPIENTRY
1866 vbo_exec_MultiDrawArraysIndirectCount(GLenum mode
, GLintptr indirect
,
1867 GLintptr drawcount_offset
,
1868 GLsizei maxdrawcount
, GLsizei stride
)
1870 GET_CURRENT_CONTEXT(ctx
);
1872 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1873 _mesa_debug(ctx
, "glMultiDrawArraysIndirectCountARB"
1874 "(%s, %lx, %lx, %i, %i)\n",
1875 _mesa_enum_to_string(mode
),
1876 (unsigned long) indirect
, (unsigned long) drawcount_offset
,
1877 maxdrawcount
, stride
);
1879 /* If <stride> is zero, the array elements are treated as tightly packed. */
1881 stride
= 4 * sizeof(GLuint
); /* sizeof(DrawArraysIndirectCommand) */
1883 if (_mesa_is_no_error_enabled(ctx
)) {
1884 FLUSH_CURRENT(ctx
, 0);
1887 _mesa_update_state(ctx
);
1889 if (!_mesa_validate_MultiDrawArraysIndirectCount(ctx
, mode
,
1892 maxdrawcount
, stride
))
1896 if (skip_validated_draw(ctx
))
1899 vbo_validated_multidrawarraysindirectcount(ctx
, mode
, indirect
,
1901 maxdrawcount
, stride
);
1905 static void GLAPIENTRY
1906 vbo_exec_MultiDrawElementsIndirectCount(GLenum mode
, GLenum type
,
1908 GLintptr drawcount_offset
,
1909 GLsizei maxdrawcount
, GLsizei stride
)
1911 GET_CURRENT_CONTEXT(ctx
);
1913 if (MESA_VERBOSE
& VERBOSE_DRAW
)
1914 _mesa_debug(ctx
, "glMultiDrawElementsIndirectCountARB"
1915 "(%s, %s, %lx, %lx, %i, %i)\n",
1916 _mesa_enum_to_string(mode
), _mesa_enum_to_string(type
),
1917 (unsigned long) indirect
, (unsigned long) drawcount_offset
,
1918 maxdrawcount
, stride
);
1920 /* If <stride> is zero, the array elements are treated as tightly packed. */
1922 stride
= 5 * sizeof(GLuint
); /* sizeof(DrawElementsIndirectCommand) */
1924 if (_mesa_is_no_error_enabled(ctx
)) {
1925 FLUSH_CURRENT(ctx
, 0);
1928 _mesa_update_state(ctx
);
1930 if (!_mesa_validate_MultiDrawElementsIndirectCount(ctx
, mode
, type
,
1933 maxdrawcount
, stride
))
1937 if (skip_validated_draw(ctx
))
1940 vbo_validated_multidrawelementsindirectcount(ctx
, mode
, type
, indirect
,
1941 drawcount_offset
, maxdrawcount
,
1947 * Initialize the dispatch table with the VBO functions for drawing.
1950 vbo_initialize_exec_dispatch(const struct gl_context
*ctx
,
1951 struct _glapi_table
*exec
)
1953 SET_DrawArrays(exec
, vbo_exec_DrawArrays
);
1954 SET_DrawElements(exec
, vbo_exec_DrawElements
);
1956 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1957 SET_DrawRangeElements(exec
, vbo_exec_DrawRangeElements
);
1960 SET_MultiDrawArrays(exec
, vbo_exec_MultiDrawArrays
);
1961 SET_MultiDrawElementsEXT(exec
, vbo_exec_MultiDrawElements
);
1963 if (ctx
->API
== API_OPENGL_COMPAT
) {
1964 SET_Rectf(exec
, vbo_exec_Rectf
);
1965 SET_EvalMesh1(exec
, vbo_exec_EvalMesh1
);
1966 SET_EvalMesh2(exec
, vbo_exec_EvalMesh2
);
1969 if (ctx
->API
!= API_OPENGLES
&&
1970 ctx
->Extensions
.ARB_draw_elements_base_vertex
) {
1971 SET_DrawElementsBaseVertex(exec
, vbo_exec_DrawElementsBaseVertex
);
1972 SET_MultiDrawElementsBaseVertex(exec
,
1973 vbo_exec_MultiDrawElementsBaseVertex
);
1975 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1976 SET_DrawRangeElementsBaseVertex(exec
,
1977 vbo_exec_DrawRangeElementsBaseVertex
);
1978 SET_DrawElementsInstancedBaseVertex(exec
,
1979 vbo_exec_DrawElementsInstancedBaseVertex
);
1983 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
1984 SET_DrawArraysInstancedBaseInstance(exec
,
1985 vbo_exec_DrawArraysInstancedBaseInstance
);
1986 SET_DrawElementsInstancedBaseInstance(exec
,
1987 vbo_exec_DrawElementsInstancedBaseInstance
);
1988 SET_DrawElementsInstancedBaseVertexBaseInstance(exec
,
1989 vbo_exec_DrawElementsInstancedBaseVertexBaseInstance
);
1992 if (ctx
->API
== API_OPENGL_CORE
|| _mesa_is_gles31(ctx
)) {
1993 SET_DrawArraysIndirect(exec
, vbo_exec_DrawArraysIndirect
);
1994 SET_DrawElementsIndirect(exec
, vbo_exec_DrawElementsIndirect
);
1997 if (ctx
->API
== API_OPENGL_CORE
) {
1998 SET_MultiDrawArraysIndirect(exec
, vbo_exec_MultiDrawArraysIndirect
);
1999 SET_MultiDrawElementsIndirect(exec
, vbo_exec_MultiDrawElementsIndirect
);
2000 SET_MultiDrawArraysIndirectCountARB(exec
,
2001 vbo_exec_MultiDrawArraysIndirectCount
);
2002 SET_MultiDrawElementsIndirectCountARB(exec
,
2003 vbo_exec_MultiDrawElementsIndirectCount
);
2006 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2007 SET_DrawArraysInstancedARB(exec
, vbo_exec_DrawArraysInstanced
);
2008 SET_DrawElementsInstancedARB(exec
, vbo_exec_DrawElementsInstanced
);
2011 if (_mesa_is_desktop_gl(ctx
)) {
2012 SET_DrawTransformFeedback(exec
, vbo_exec_DrawTransformFeedback
);
2013 SET_DrawTransformFeedbackStream(exec
,
2014 vbo_exec_DrawTransformFeedbackStream
);
2015 SET_DrawTransformFeedbackInstanced(exec
,
2016 vbo_exec_DrawTransformFeedbackInstanced
);
2017 SET_DrawTransformFeedbackStreamInstanced(exec
,
2018 vbo_exec_DrawTransformFeedbackStreamInstanced
);
2025 * The following functions are only used for OpenGL ES 1/2 support.
2026 * And some aren't even supported (yet) in ES 1/2.
2031 _mesa_DrawArrays(GLenum mode
, GLint first
, GLsizei count
)
2033 vbo_exec_DrawArrays(mode
, first
, count
);
2038 _mesa_DrawArraysInstanced(GLenum mode
, GLint first
, GLsizei count
,
2041 vbo_exec_DrawArraysInstanced(mode
, first
, count
, primcount
);
2046 _mesa_DrawElements(GLenum mode
, GLsizei count
, GLenum type
,
2047 const GLvoid
*indices
)
2049 vbo_exec_DrawElements(mode
, count
, type
, indices
);
2054 _mesa_DrawElementsBaseVertex(GLenum mode
, GLsizei count
, GLenum type
,
2055 const GLvoid
*indices
, GLint basevertex
)
2057 vbo_exec_DrawElementsBaseVertex(mode
, count
, type
, indices
, basevertex
);
2062 _mesa_DrawRangeElements(GLenum mode
, GLuint start
, GLuint end
, GLsizei count
,
2063 GLenum type
, const GLvoid
* indices
)
2065 vbo_exec_DrawRangeElements(mode
, start
, end
, count
, type
, indices
);
2070 _mesa_DrawRangeElementsBaseVertex(GLenum mode
, GLuint start
, GLuint end
,
2071 GLsizei count
, GLenum type
,
2072 const GLvoid
*indices
, GLint basevertex
)
2074 vbo_exec_DrawRangeElementsBaseVertex(mode
, start
, end
, count
, type
,
2075 indices
, basevertex
);
2080 _mesa_MultiDrawElementsEXT(GLenum mode
, const GLsizei
*count
, GLenum type
,
2081 const GLvoid
** indices
, GLsizei primcount
)
2083 vbo_exec_MultiDrawElements(mode
, count
, type
, indices
, primcount
);
2088 _mesa_MultiDrawElementsBaseVertex(GLenum mode
,
2089 const GLsizei
*count
, GLenum type
,
2090 const GLvoid
**indices
, GLsizei primcount
,
2091 const GLint
*basevertex
)
2093 vbo_exec_MultiDrawElementsBaseVertex(mode
, count
, type
, indices
,
2094 primcount
, basevertex
);
2099 _mesa_DrawTransformFeedback(GLenum mode
, GLuint name
)
2101 vbo_exec_DrawTransformFeedback(mode
, name
);