1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * This file implements the st_draw_vbo() function which is called from
30 * Mesa's VBO module. All point/line/triangle rendering is done through
31 * this function whether the user called glBegin/End, glDrawArrays,
32 * glDrawElements, glEvalMesh, or glCalList, etc.
34 * We basically convert the VBO's vertex attribute/array information into
35 * Gallium vertex state, bind the vertex buffer objects and call
39 * Keith Whitwell <keith@tungstengraphics.com>
43 #include "main/imports.h"
44 #include "main/image.h"
45 #include "main/bufferobj.h"
46 #include "main/macros.h"
47 #include "main/mfeatures.h"
48 #include "program/prog_uniform.h"
52 #include "st_context.h"
54 #include "st_cb_bufferobjects.h"
56 #include "st_program.h"
58 #include "pipe/p_context.h"
59 #include "pipe/p_defines.h"
60 #include "util/u_inlines.h"
61 #include "util/u_format.h"
62 #include "util/u_prim.h"
63 #include "util/u_draw_quad.h"
64 #include "draw/draw_context.h"
65 #include "cso_cache/cso_context.h"
68 static GLuint double_types
[4] = {
69 PIPE_FORMAT_R64_FLOAT
,
70 PIPE_FORMAT_R64G64_FLOAT
,
71 PIPE_FORMAT_R64G64B64_FLOAT
,
72 PIPE_FORMAT_R64G64B64A64_FLOAT
75 static GLuint float_types
[4] = {
76 PIPE_FORMAT_R32_FLOAT
,
77 PIPE_FORMAT_R32G32_FLOAT
,
78 PIPE_FORMAT_R32G32B32_FLOAT
,
79 PIPE_FORMAT_R32G32B32A32_FLOAT
82 static GLuint half_float_types
[4] = {
83 PIPE_FORMAT_R16_FLOAT
,
84 PIPE_FORMAT_R16G16_FLOAT
,
85 PIPE_FORMAT_R16G16B16_FLOAT
,
86 PIPE_FORMAT_R16G16B16A16_FLOAT
89 static GLuint uint_types_norm
[4] = {
90 PIPE_FORMAT_R32_UNORM
,
91 PIPE_FORMAT_R32G32_UNORM
,
92 PIPE_FORMAT_R32G32B32_UNORM
,
93 PIPE_FORMAT_R32G32B32A32_UNORM
96 static GLuint uint_types_scale
[4] = {
97 PIPE_FORMAT_R32_USCALED
,
98 PIPE_FORMAT_R32G32_USCALED
,
99 PIPE_FORMAT_R32G32B32_USCALED
,
100 PIPE_FORMAT_R32G32B32A32_USCALED
103 static GLuint int_types_norm
[4] = {
104 PIPE_FORMAT_R32_SNORM
,
105 PIPE_FORMAT_R32G32_SNORM
,
106 PIPE_FORMAT_R32G32B32_SNORM
,
107 PIPE_FORMAT_R32G32B32A32_SNORM
110 static GLuint int_types_scale
[4] = {
111 PIPE_FORMAT_R32_SSCALED
,
112 PIPE_FORMAT_R32G32_SSCALED
,
113 PIPE_FORMAT_R32G32B32_SSCALED
,
114 PIPE_FORMAT_R32G32B32A32_SSCALED
117 static GLuint ushort_types_norm
[4] = {
118 PIPE_FORMAT_R16_UNORM
,
119 PIPE_FORMAT_R16G16_UNORM
,
120 PIPE_FORMAT_R16G16B16_UNORM
,
121 PIPE_FORMAT_R16G16B16A16_UNORM
124 static GLuint ushort_types_scale
[4] = {
125 PIPE_FORMAT_R16_USCALED
,
126 PIPE_FORMAT_R16G16_USCALED
,
127 PIPE_FORMAT_R16G16B16_USCALED
,
128 PIPE_FORMAT_R16G16B16A16_USCALED
131 static GLuint short_types_norm
[4] = {
132 PIPE_FORMAT_R16_SNORM
,
133 PIPE_FORMAT_R16G16_SNORM
,
134 PIPE_FORMAT_R16G16B16_SNORM
,
135 PIPE_FORMAT_R16G16B16A16_SNORM
138 static GLuint short_types_scale
[4] = {
139 PIPE_FORMAT_R16_SSCALED
,
140 PIPE_FORMAT_R16G16_SSCALED
,
141 PIPE_FORMAT_R16G16B16_SSCALED
,
142 PIPE_FORMAT_R16G16B16A16_SSCALED
145 static GLuint ubyte_types_norm
[4] = {
146 PIPE_FORMAT_R8_UNORM
,
147 PIPE_FORMAT_R8G8_UNORM
,
148 PIPE_FORMAT_R8G8B8_UNORM
,
149 PIPE_FORMAT_R8G8B8A8_UNORM
152 static GLuint ubyte_types_scale
[4] = {
153 PIPE_FORMAT_R8_USCALED
,
154 PIPE_FORMAT_R8G8_USCALED
,
155 PIPE_FORMAT_R8G8B8_USCALED
,
156 PIPE_FORMAT_R8G8B8A8_USCALED
159 static GLuint byte_types_norm
[4] = {
160 PIPE_FORMAT_R8_SNORM
,
161 PIPE_FORMAT_R8G8_SNORM
,
162 PIPE_FORMAT_R8G8B8_SNORM
,
163 PIPE_FORMAT_R8G8B8A8_SNORM
166 static GLuint byte_types_scale
[4] = {
167 PIPE_FORMAT_R8_SSCALED
,
168 PIPE_FORMAT_R8G8_SSCALED
,
169 PIPE_FORMAT_R8G8B8_SSCALED
,
170 PIPE_FORMAT_R8G8B8A8_SSCALED
173 static GLuint fixed_types
[4] = {
174 PIPE_FORMAT_R32_FIXED
,
175 PIPE_FORMAT_R32G32_FIXED
,
176 PIPE_FORMAT_R32G32B32_FIXED
,
177 PIPE_FORMAT_R32G32B32A32_FIXED
183 * Return a PIPE_FORMAT_x for the given GL datatype and size.
186 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
187 GLboolean normalized
)
189 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
190 type
== GL_FIXED
|| type
== GL_HALF_FLOAT
||
191 type
== GL_INT_2_10_10_10_REV
||
192 type
== GL_UNSIGNED_INT_2_10_10_10_REV
);
195 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
197 if (type
== GL_INT_2_10_10_10_REV
||
198 type
== GL_UNSIGNED_INT_2_10_10_10_REV
) {
201 if (format
== GL_BGRA
) {
202 if (type
== GL_INT_2_10_10_10_REV
) {
204 return PIPE_FORMAT_B10G10R10A2_SNORM
;
206 return PIPE_FORMAT_B10G10R10A2_SSCALED
;
209 return PIPE_FORMAT_B10G10R10A2_UNORM
;
211 return PIPE_FORMAT_B10G10R10A2_USCALED
;
214 if (type
== GL_INT_2_10_10_10_REV
) {
216 return PIPE_FORMAT_R10G10B10A2_SNORM
;
218 return PIPE_FORMAT_R10G10B10A2_SSCALED
;
221 return PIPE_FORMAT_R10G10B10A2_UNORM
;
223 return PIPE_FORMAT_R10G10B10A2_USCALED
;
228 if (format
== GL_BGRA
) {
229 /* this is an odd-ball case */
230 assert(type
== GL_UNSIGNED_BYTE
);
232 return PIPE_FORMAT_B8G8R8A8_UNORM
;
237 case GL_DOUBLE
: return double_types
[size
-1];
238 case GL_FLOAT
: return float_types
[size
-1];
239 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
240 case GL_INT
: return int_types_norm
[size
-1];
241 case GL_SHORT
: return short_types_norm
[size
-1];
242 case GL_BYTE
: return byte_types_norm
[size
-1];
243 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
244 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
245 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
246 case GL_FIXED
: return fixed_types
[size
-1];
247 default: assert(0); return 0;
252 case GL_DOUBLE
: return double_types
[size
-1];
253 case GL_FLOAT
: return float_types
[size
-1];
254 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
255 case GL_INT
: return int_types_scale
[size
-1];
256 case GL_SHORT
: return short_types_scale
[size
-1];
257 case GL_BYTE
: return byte_types_scale
[size
-1];
258 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
259 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
260 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
261 case GL_FIXED
: return fixed_types
[size
-1];
262 default: assert(0); return 0;
265 return PIPE_FORMAT_NONE
; /* silence compiler warning */
270 * This is very similar to vbo_all_varyings_in_vbos() but we are
271 * only interested in per-vertex data. See bug 38626.
274 all_varyings_in_vbos(const struct gl_client_array
*arrays
[])
278 for (i
= 0; i
< VERT_ATTRIB_MAX
; i
++)
279 if (arrays
[i
]->StrideB
&&
280 !arrays
[i
]->InstanceDivisor
&&
281 !_mesa_is_bufferobj(arrays
[i
]->BufferObj
))
289 * Examine the active arrays to determine if we have interleaved
290 * vertex arrays all living in one VBO, or all living in user space.
293 is_interleaved_arrays(const struct st_vertex_program
*vp
,
294 const struct st_vp_variant
*vpv
,
295 const struct gl_client_array
**arrays
)
298 const struct gl_buffer_object
*firstBufObj
= NULL
;
299 GLint firstStride
= -1;
300 const GLubyte
*firstPtr
= NULL
;
301 GLboolean userSpaceBuffer
= GL_FALSE
;
303 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
304 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
305 const struct gl_client_array
*array
= arrays
[mesaAttr
];
306 const struct gl_buffer_object
*bufObj
= array
->BufferObj
;
307 const GLsizei stride
= array
->StrideB
; /* in bytes */
310 /* save info about the first array */
311 firstStride
= stride
;
312 firstPtr
= array
->Ptr
;
313 firstBufObj
= bufObj
;
314 userSpaceBuffer
= !bufObj
|| !bufObj
->Name
;
317 /* check if other arrays interleave with the first, in same buffer */
318 if (stride
!= firstStride
)
319 return GL_FALSE
; /* strides don't match */
321 if (bufObj
!= firstBufObj
)
322 return GL_FALSE
; /* arrays in different VBOs */
324 if (abs(array
->Ptr
- firstPtr
) > firstStride
)
325 return GL_FALSE
; /* arrays start too far apart */
327 if ((!bufObj
|| !_mesa_is_bufferobj(bufObj
)) != userSpaceBuffer
)
328 return GL_FALSE
; /* mix of VBO and user-space arrays */
337 * Set up for drawing interleaved arrays that all live in one VBO
338 * or all live in user space.
339 * \param vbuffer returns vertex buffer info
340 * \param velements returns vertex element info
341 * \return GL_TRUE for success, GL_FALSE otherwise (probably out of memory)
344 setup_interleaved_attribs(struct gl_context
*ctx
,
345 const struct st_vertex_program
*vp
,
346 const struct st_vp_variant
*vpv
,
347 const struct gl_client_array
**arrays
,
348 struct pipe_vertex_buffer
*vbuffer
,
349 struct pipe_vertex_element velements
[],
351 unsigned num_instances
)
353 struct st_context
*st
= st_context(ctx
);
354 struct pipe_context
*pipe
= st
->pipe
;
356 const GLubyte
*low_addr
= NULL
;
357 GLboolean usingVBO
; /* all arrays in a VBO? */
358 struct gl_buffer_object
*bufobj
;
359 GLuint user_buffer_size
= 0;
360 GLuint vertex_size
= 0; /* bytes per vertex, in bytes */
363 /* Find the lowest address of the arrays we're drawing,
364 * Init bufobj and stride.
366 if (vpv
->num_inputs
) {
367 const GLuint mesaAttr0
= vp
->index_to_input
[0];
368 const struct gl_client_array
*array
= arrays
[mesaAttr0
];
370 /* Since we're doing interleaved arrays, we know there'll be at most
371 * one buffer object and the stride will be the same for all arrays.
374 bufobj
= array
->BufferObj
;
375 stride
= array
->StrideB
;
377 low_addr
= arrays
[vp
->index_to_input
[0]]->Ptr
;
379 for (attr
= 1; attr
< vpv
->num_inputs
; attr
++) {
380 const GLubyte
*start
= arrays
[vp
->index_to_input
[attr
]]->Ptr
;
381 low_addr
= MIN2(low_addr
, start
);
385 /* not sure we'll ever have zero inputs, but play it safe */
391 /* are the arrays in user space? */
392 usingVBO
= bufobj
&& _mesa_is_bufferobj(bufobj
);
394 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
395 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
396 const struct gl_client_array
*array
= arrays
[mesaAttr
];
397 unsigned src_offset
= (unsigned) (array
->Ptr
- low_addr
);
398 GLuint element_size
= array
->_ElementSize
;
400 assert(element_size
== array
->Size
* _mesa_sizeof_type(array
->Type
));
402 velements
[attr
].src_offset
= src_offset
;
403 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
404 velements
[attr
].vertex_buffer_index
= 0;
405 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
409 assert(velements
[attr
].src_format
);
412 /* how many bytes referenced by this attribute array? */
413 uint divisor
= array
->InstanceDivisor
;
414 uint last_index
= divisor
? num_instances
/ divisor
: max_index
;
415 uint bytes
= src_offset
+ stride
* last_index
+ element_size
;
417 user_buffer_size
= MAX2(user_buffer_size
, bytes
);
419 /* update vertex size */
420 vertex_size
= MAX2(vertex_size
, src_offset
+ element_size
);
425 * Return the vbuffer info and setup user-space attrib info, if needed.
427 if (vpv
->num_inputs
== 0) {
428 /* just defensive coding here */
429 vbuffer
->buffer
= NULL
;
430 vbuffer
->buffer_offset
= 0;
432 st
->num_user_attribs
= 0;
435 /* all interleaved arrays in a VBO */
436 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
439 /* probably out of memory */
443 vbuffer
->buffer
= NULL
;
444 pipe_resource_reference(&vbuffer
->buffer
, stobj
->buffer
);
445 vbuffer
->buffer_offset
= pointer_to_offset(low_addr
);
446 vbuffer
->stride
= stride
;
447 st
->num_user_attribs
= 0;
450 /* all interleaved arrays in user memory */
451 vbuffer
->buffer
= pipe_user_buffer_create(pipe
->screen
,
454 PIPE_BIND_VERTEX_BUFFER
);
455 vbuffer
->buffer_offset
= 0;
456 vbuffer
->stride
= stride
;
458 /* Track user vertex buffers. */
459 pipe_resource_reference(&st
->user_attrib
[0].buffer
, vbuffer
->buffer
);
460 st
->user_attrib
[0].element_size
= vertex_size
;
461 st
->user_attrib
[0].stride
= stride
;
462 st
->num_user_attribs
= 1;
470 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
472 * \param vbuffer returns vertex buffer info
473 * \param velements returns vertex element info
474 * \return GL_TRUE for success, GL_FALSE otherwise (probably out of memory)
477 setup_non_interleaved_attribs(struct gl_context
*ctx
,
478 const struct st_vertex_program
*vp
,
479 const struct st_vp_variant
*vpv
,
480 const struct gl_client_array
**arrays
,
481 struct pipe_vertex_buffer vbuffer
[],
482 struct pipe_vertex_element velements
[],
484 unsigned num_instances
)
486 struct st_context
*st
= st_context(ctx
);
487 struct pipe_context
*pipe
= st
->pipe
;
490 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
491 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
492 const struct gl_client_array
*array
= arrays
[mesaAttr
];
493 struct gl_buffer_object
*bufobj
= array
->BufferObj
;
494 GLuint element_size
= array
->_ElementSize
;
495 GLsizei stride
= array
->StrideB
;
497 assert(element_size
== array
->Size
* _mesa_sizeof_type(array
->Type
));
499 if (bufobj
&& _mesa_is_bufferobj(bufobj
)) {
500 /* Attribute data is in a VBO.
501 * Recall that for VBOs, the gl_client_array->Ptr field is
502 * really an offset from the start of the VBO, not a pointer.
504 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
506 if (!stobj
|| !stobj
->buffer
) {
507 /* probably ran out of memory */
511 vbuffer
[attr
].buffer
= NULL
;
512 pipe_resource_reference(&vbuffer
[attr
].buffer
, stobj
->buffer
);
513 vbuffer
[attr
].buffer_offset
= pointer_to_offset(array
->Ptr
);
521 uint divisor
= array
->InstanceDivisor
;
522 uint last_index
= divisor
? num_instances
/ divisor
: max_index
;
524 bytes
= stride
* last_index
+ element_size
;
526 ptr
= (void *) array
->Ptr
;
529 /* no array, use ctx->Current.Attrib[] value */
530 bytes
= element_size
= sizeof(ctx
->Current
.Attrib
[0]);
531 ptr
= (void *) ctx
->Current
.Attrib
[mesaAttr
];
538 vbuffer
[attr
].buffer
=
539 pipe_user_buffer_create(pipe
->screen
, ptr
, bytes
,
540 PIPE_BIND_VERTEX_BUFFER
);
542 vbuffer
[attr
].buffer_offset
= 0;
544 /* Track user vertex buffers. */
545 pipe_resource_reference(&st
->user_attrib
[attr
].buffer
, vbuffer
[attr
].buffer
);
546 st
->user_attrib
[attr
].element_size
= element_size
;
547 st
->user_attrib
[attr
].stride
= stride
;
548 st
->num_user_attribs
= MAX2(st
->num_user_attribs
, attr
+ 1);
550 if (!vbuffer
[attr
].buffer
) {
551 /* probably ran out of memory */
556 /* common-case setup */
557 vbuffer
[attr
].stride
= stride
; /* in bytes */
559 velements
[attr
].src_offset
= 0;
560 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
561 velements
[attr
].vertex_buffer_index
= attr
;
562 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
566 assert(velements
[attr
].src_format
);
574 setup_index_buffer(struct gl_context
*ctx
,
575 const struct _mesa_index_buffer
*ib
,
576 struct pipe_index_buffer
*ibuffer
)
578 struct st_context
*st
= st_context(ctx
);
579 struct pipe_context
*pipe
= st
->pipe
;
581 memset(ibuffer
, 0, sizeof(*ibuffer
));
583 struct gl_buffer_object
*bufobj
= ib
->obj
;
586 case GL_UNSIGNED_INT
:
587 ibuffer
->index_size
= 4;
589 case GL_UNSIGNED_SHORT
:
590 ibuffer
->index_size
= 2;
592 case GL_UNSIGNED_BYTE
:
593 ibuffer
->index_size
= 1;
600 /* get/create the index buffer object */
601 if (bufobj
&& _mesa_is_bufferobj(bufobj
)) {
602 /* elements/indexes are in a real VBO */
603 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
604 pipe_resource_reference(&ibuffer
->buffer
, stobj
->buffer
);
605 ibuffer
->offset
= pointer_to_offset(ib
->ptr
);
608 /* element/indicies are in user space memory */
610 pipe_user_buffer_create(pipe
->screen
, (void *) ib
->ptr
,
611 ib
->count
* ibuffer
->index_size
,
612 PIPE_BIND_INDEX_BUFFER
);
619 * Prior to drawing, check that any uniforms referenced by the
620 * current shader have been set. If a uniform has not been set,
624 check_uniforms(struct gl_context
*ctx
)
626 struct gl_shader_program
*shProg
[3] = {
627 ctx
->Shader
.CurrentVertexProgram
,
628 ctx
->Shader
.CurrentGeometryProgram
,
629 ctx
->Shader
.CurrentFragmentProgram
,
633 for (j
= 0; j
< 3; j
++) {
636 if (shProg
[j
] == NULL
|| !shProg
[j
]->LinkStatus
)
639 for (i
= 0; i
< shProg
[j
]->Uniforms
->NumUniforms
; i
++) {
640 const struct gl_uniform
*u
= &shProg
[j
]->Uniforms
->Uniforms
[i
];
641 if (!u
->Initialized
) {
643 "Using shader with uninitialized uniform: %s",
650 /** Helper code for primitive restart fallback */
651 #define DO_DRAW(pipe, cur_start, cur_count) \
653 info.start = cur_start; \
654 info.count = cur_count; \
655 if (u_trim_pipe_prim(info.mode, &info.count)) { \
657 pipe_buffer_unmap(pipe, transfer); \
658 pipe->draw_vbo(pipe, &info); \
660 ptr = pipe_buffer_map(pipe, ibuffer->buffer, PIPE_TRANSFER_READ, &transfer); \
661 assert(ptr != NULL); \
662 ptr = ADD_POINTERS(ptr, ibuffer->offset); \
667 /** More helper code for primitive restart fallback */
668 #define PRIM_RESTART_LOOP(elements) \
670 for (i = start; i < end; i++) { \
671 if (elements[i] == info.restart_index) { \
672 if (cur_count > 0) { \
673 /* draw elts up to prev pos */ \
674 DO_DRAW(pipe, cur_start, cur_count); \
676 /* begin new prim at next elt */ \
684 if (cur_count > 0) { \
685 DO_DRAW(pipe, cur_start, cur_count); \
690 handle_fallback_primitive_restart(struct pipe_context
*pipe
,
691 const struct _mesa_index_buffer
*ib
,
692 struct pipe_index_buffer
*ibuffer
,
693 struct pipe_draw_info
*orig_info
)
695 const unsigned start
= orig_info
->start
;
696 const unsigned count
= orig_info
->count
;
697 const unsigned end
= start
+ count
;
698 struct pipe_draw_info info
= *orig_info
;
699 struct pipe_transfer
*transfer
= NULL
;
700 unsigned instance
, i
, cur_start
, cur_count
;
703 info
.primitive_restart
= FALSE
;
706 /* Splitting the draw arrays call is handled by the VBO module */
707 if (u_trim_pipe_prim(info
.mode
, &info
.count
))
708 pipe
->draw_vbo(pipe
, &info
);
713 /* info.indexed == TRUE */
715 assert(ibuffer
->buffer
);
718 struct gl_buffer_object
*bufobj
= ib
->obj
;
719 if (bufobj
&& bufobj
->Name
) {
730 ptr
= pipe_buffer_map(pipe
, ibuffer
->buffer
, PIPE_TRANSFER_READ
, &transfer
);
734 ptr
= ADD_POINTERS(ptr
, ibuffer
->offset
);
736 /* Need to loop over instances as well to preserve draw order */
737 for (instance
= 0; instance
< orig_info
->instance_count
; instance
++) {
738 info
.start_instance
= instance
+ orig_info
->start_instance
;
739 info
.instance_count
= 1;
743 switch (ibuffer
->index_size
) {
746 const ubyte
*elt_ub
= (const ubyte
*)ptr
;
747 PRIM_RESTART_LOOP(elt_ub
);
752 const ushort
*elt_us
= (const ushort
*)ptr
;
753 PRIM_RESTART_LOOP(elt_us
);
758 const uint
*elt_ui
= (const uint
*)ptr
;
759 PRIM_RESTART_LOOP(elt_ui
);
763 assert(0 && "bad index_size in handle_fallback_primitive_restart()");
768 pipe_buffer_unmap(pipe
, transfer
);
773 * Translate OpenGL primtive type (GL_POINTS, GL_TRIANGLE_STRIP, etc) to
774 * the corresponding Gallium type.
777 translate_prim(const struct gl_context
*ctx
, unsigned prim
)
779 /* GL prims should match Gallium prims, spot-check a few */
780 assert(GL_POINTS
== PIPE_PRIM_POINTS
);
781 assert(GL_QUADS
== PIPE_PRIM_QUADS
);
782 assert(GL_TRIANGLE_STRIP_ADJACENCY
== PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY
);
784 /* Avoid quadstrips if it's easy to do so:
785 * Note: it's important to do the correct trimming if we change the
786 * prim type! We do that wherever this function is called.
788 if (prim
== GL_QUAD_STRIP
&&
789 ctx
->Light
.ShadeModel
!= GL_FLAT
&&
790 ctx
->Polygon
.FrontMode
== GL_FILL
&&
791 ctx
->Polygon
.BackMode
== GL_FILL
)
792 prim
= GL_TRIANGLE_STRIP
;
799 * Setup vertex arrays and buffers prior to drawing.
800 * \return GL_TRUE for success, GL_FALSE otherwise (probably out of memory)
803 st_validate_varrays(struct gl_context
*ctx
,
804 const struct gl_client_array
**arrays
,
806 unsigned num_instances
)
808 struct st_context
*st
= st_context(ctx
);
809 const struct st_vertex_program
*vp
;
810 const struct st_vp_variant
*vpv
;
811 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
812 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
813 unsigned num_vbuffers
, num_velements
;
817 /* must get these after state validation! */
819 vpv
= st
->vp_variant
;
821 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
823 /* Unreference any user vertex buffers. */
824 for (i
= 0; i
< st
->num_user_attribs
; i
++) {
825 pipe_resource_reference(&st
->user_attrib
[i
].buffer
, NULL
);
827 st
->num_user_attribs
= 0;
830 * Setup the vbuffer[] and velements[] arrays.
832 if (is_interleaved_arrays(vp
, vpv
, arrays
)) {
833 if (!setup_interleaved_attribs(ctx
, vp
, vpv
, arrays
, vbuffer
, velements
,
834 max_index
, num_instances
)) {
839 num_velements
= vpv
->num_inputs
;
840 if (num_velements
== 0)
844 if (!setup_non_interleaved_attribs(ctx
, vp
, vpv
, arrays
,
845 vbuffer
, velements
, max_index
,
850 num_vbuffers
= vpv
->num_inputs
;
851 num_velements
= vpv
->num_inputs
;
854 cso_set_vertex_buffers(st
->cso_context
, num_vbuffers
, vbuffer
);
855 cso_set_vertex_elements(st
->cso_context
, num_velements
, velements
);
857 /* unreference buffers (frees wrapped user-space buffer objects)
858 * This is OK, because the pipe driver should reference buffers by itself
859 * in set_vertex_buffers. */
860 for (attr
= 0; attr
< num_vbuffers
; attr
++) {
861 pipe_resource_reference(&vbuffer
[attr
].buffer
, NULL
);
862 assert(!vbuffer
[attr
].buffer
);
870 * This function gets plugged into the VBO module and is called when
871 * we have something to render.
872 * Basically, translate the information into the format expected by gallium.
875 st_draw_vbo(struct gl_context
*ctx
,
876 const struct gl_client_array
**arrays
,
877 const struct _mesa_prim
*prims
,
879 const struct _mesa_index_buffer
*ib
,
880 GLboolean index_bounds_valid
,
884 struct st_context
*st
= st_context(ctx
);
885 struct pipe_context
*pipe
= st
->pipe
;
886 struct pipe_index_buffer ibuffer
;
887 struct pipe_draw_info info
;
888 unsigned i
, num_instances
= 1;
889 GLboolean new_array
=
891 (st
->dirty
.mesa
& (_NEW_ARRAY
| _NEW_PROGRAM
| _NEW_BUFFER_OBJECT
)) != 0;
893 /* Mesa core state should have been validated already */
894 assert(ctx
->NewState
== 0x0);
897 /* Gallium probably doesn't want this in some cases. */
898 if (!index_bounds_valid
)
899 if (!all_varyings_in_vbos(arrays
))
900 vbo_get_minmax_index(ctx
, prims
, ib
, &min_index
, &max_index
);
902 for (i
= 0; i
< nr_prims
; i
++) {
903 num_instances
= MAX2(num_instances
, prims
[i
].num_instances
);
907 /* Get min/max index for non-indexed drawing. */
911 for (i
= 0; i
< nr_prims
; i
++) {
912 min_index
= MIN2(min_index
, prims
[i
].start
);
913 max_index
= MAX2(max_index
, prims
[i
].start
+ prims
[i
].count
- 1);
914 num_instances
= MAX2(num_instances
, prims
[i
].num_instances
);
918 /* Validate state. */
920 GLboolean vertDataEdgeFlags
;
922 /* sanity check for pointer arithmetic below */
923 assert(sizeof(arrays
[0]->Ptr
[0]) == 1);
925 vertDataEdgeFlags
= arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
&&
926 arrays
[VERT_ATTRIB_EDGEFLAG
]->BufferObj
->Name
;
927 if (vertDataEdgeFlags
!= st
->vertdata_edgeflags
) {
928 st
->vertdata_edgeflags
= vertDataEdgeFlags
;
929 st
->dirty
.st
|= ST_NEW_EDGEFLAGS_DATA
;
932 st_validate_state(st
);
935 if (!st_validate_varrays(ctx
, arrays
, max_index
, num_instances
)) {
936 /* probably out of memory, no-op the draw call */
942 if (MESA_VERBOSE
& VERBOSE_GLSL
) {
946 (void) check_uniforms
;
950 /* Notify the driver that the content of user buffers may have been
952 assert(max_index
>= min_index
);
953 if (!new_array
&& st
->num_user_attribs
) {
954 for (i
= 0; i
< st
->num_user_attribs
; i
++) {
955 if (st
->user_attrib
[i
].buffer
) {
956 unsigned element_size
= st
->user_attrib
[i
].element_size
;
957 unsigned stride
= st
->user_attrib
[i
].stride
;
958 unsigned min_offset
= min_index
* stride
;
959 unsigned max_offset
= max_index
* stride
+ element_size
;
961 assert(max_offset
> min_offset
);
963 pipe
->redefine_user_buffer(pipe
, st
->user_attrib
[i
].buffer
,
965 max_offset
- min_offset
);
970 setup_index_buffer(ctx
, ib
, &ibuffer
);
971 pipe
->set_index_buffer(pipe
, &ibuffer
);
973 util_draw_init_info(&info
);
976 if (min_index
!= ~0 && max_index
!= ~0) {
977 info
.min_index
= min_index
;
978 info
.max_index
= max_index
;
982 info
.primitive_restart
= ctx
->Array
.PrimitiveRestart
;
983 info
.restart_index
= ctx
->Array
.RestartIndex
;
985 /* do actual drawing */
986 for (i
= 0; i
< nr_prims
; i
++) {
987 info
.mode
= translate_prim( ctx
, prims
[i
].mode
);
988 info
.start
= prims
[i
].start
;
989 info
.count
= prims
[i
].count
;
990 info
.instance_count
= prims
[i
].num_instances
;
991 info
.index_bias
= prims
[i
].basevertex
;
993 info
.min_index
= info
.start
;
994 info
.max_index
= info
.start
+ info
.count
- 1;
997 if (info
.primitive_restart
) {
999 * Handle primitive restart for drivers that doesn't support it.
1001 * The VBO module handles restart inside of draw_arrays for us,
1002 * but we should still remove the primitive_restart flag on the
1003 * info struct, the fallback function does this for us. Just
1004 * remove the flag for all drivers in this case as well.
1006 if (st
->sw_primitive_restart
|| !info
.indexed
)
1007 handle_fallback_primitive_restart(pipe
, ib
, &ibuffer
, &info
);
1009 /* don't trim, restarts might be inside index list */
1010 pipe
->draw_vbo(pipe
, &info
);
1012 else if (u_trim_pipe_prim(info
.mode
, &info
.count
))
1013 pipe
->draw_vbo(pipe
, &info
);
1016 pipe_resource_reference(&ibuffer
.buffer
, NULL
);
1021 st_init_draw(struct st_context
*st
)
1023 struct gl_context
*ctx
= st
->ctx
;
1025 vbo_set_draw_func(ctx
, st_draw_vbo
);
1027 #if FEATURE_feedback || FEATURE_rastpos
1028 st
->draw
= draw_create(st
->pipe
); /* for selection/feedback */
1030 /* Disable draw options that might convert points/lines to tris, etc.
1031 * as that would foul-up feedback/selection mode.
1033 draw_wide_line_threshold(st
->draw
, 1000.0f
);
1034 draw_wide_point_threshold(st
->draw
, 1000.0f
);
1035 draw_enable_line_stipple(st
->draw
, FALSE
);
1036 draw_enable_point_sprites(st
->draw
, FALSE
);
1042 st_destroy_draw(struct st_context
*st
)
1044 #if FEATURE_feedback || FEATURE_rastpos
1045 draw_destroy(st
->draw
);