2 /**************************************************************************
4 * Copyright 2007 VMware, Inc.
5 * Copyright 2012 Marek Olšák <maraeo@gmail.com>
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the
10 * "Software"), to deal in the Software without restriction, including
11 * without limitation the rights to use, copy, modify, merge, publish,
12 * distribute, sub license, and/or sell copies of the Software, and to
13 * permit persons to whom the Software is furnished to do so, subject to
14 * the following conditions:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
23 * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
24 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
25 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
26 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 **************************************************************************/
31 * This converts the VBO's vertex attribute/array information into
32 * Gallium vertex state and binds it.
35 * Keith Whitwell <keithw@vmware.com>
36 * Marek Olšák <maraeo@gmail.com>
39 #include "st_context.h"
41 #include "st_cb_bufferobjects.h"
43 #include "st_program.h"
45 #include "cso_cache/cso_context.h"
46 #include "util/u_math.h"
47 #include "main/bufferobj.h"
48 #include "main/glformats.h"
50 /* vertex_formats[gltype - GL_BYTE][integer*2 + normalized][size - 1] */
51 static const uint16_t vertex_formats
[][4][4] = {
54 PIPE_FORMAT_R8_SSCALED
,
55 PIPE_FORMAT_R8G8_SSCALED
,
56 PIPE_FORMAT_R8G8B8_SSCALED
,
57 PIPE_FORMAT_R8G8B8A8_SSCALED
61 PIPE_FORMAT_R8G8_SNORM
,
62 PIPE_FORMAT_R8G8B8_SNORM
,
63 PIPE_FORMAT_R8G8B8A8_SNORM
67 PIPE_FORMAT_R8G8_SINT
,
68 PIPE_FORMAT_R8G8B8_SINT
,
69 PIPE_FORMAT_R8G8B8A8_SINT
72 { /* GL_UNSIGNED_BYTE */
74 PIPE_FORMAT_R8_USCALED
,
75 PIPE_FORMAT_R8G8_USCALED
,
76 PIPE_FORMAT_R8G8B8_USCALED
,
77 PIPE_FORMAT_R8G8B8A8_USCALED
81 PIPE_FORMAT_R8G8_UNORM
,
82 PIPE_FORMAT_R8G8B8_UNORM
,
83 PIPE_FORMAT_R8G8B8A8_UNORM
87 PIPE_FORMAT_R8G8_UINT
,
88 PIPE_FORMAT_R8G8B8_UINT
,
89 PIPE_FORMAT_R8G8B8A8_UINT
94 PIPE_FORMAT_R16_SSCALED
,
95 PIPE_FORMAT_R16G16_SSCALED
,
96 PIPE_FORMAT_R16G16B16_SSCALED
,
97 PIPE_FORMAT_R16G16B16A16_SSCALED
100 PIPE_FORMAT_R16_SNORM
,
101 PIPE_FORMAT_R16G16_SNORM
,
102 PIPE_FORMAT_R16G16B16_SNORM
,
103 PIPE_FORMAT_R16G16B16A16_SNORM
106 PIPE_FORMAT_R16_SINT
,
107 PIPE_FORMAT_R16G16_SINT
,
108 PIPE_FORMAT_R16G16B16_SINT
,
109 PIPE_FORMAT_R16G16B16A16_SINT
112 { /* GL_UNSIGNED_SHORT */
114 PIPE_FORMAT_R16_USCALED
,
115 PIPE_FORMAT_R16G16_USCALED
,
116 PIPE_FORMAT_R16G16B16_USCALED
,
117 PIPE_FORMAT_R16G16B16A16_USCALED
120 PIPE_FORMAT_R16_UNORM
,
121 PIPE_FORMAT_R16G16_UNORM
,
122 PIPE_FORMAT_R16G16B16_UNORM
,
123 PIPE_FORMAT_R16G16B16A16_UNORM
126 PIPE_FORMAT_R16_UINT
,
127 PIPE_FORMAT_R16G16_UINT
,
128 PIPE_FORMAT_R16G16B16_UINT
,
129 PIPE_FORMAT_R16G16B16A16_UINT
134 PIPE_FORMAT_R32_SSCALED
,
135 PIPE_FORMAT_R32G32_SSCALED
,
136 PIPE_FORMAT_R32G32B32_SSCALED
,
137 PIPE_FORMAT_R32G32B32A32_SSCALED
140 PIPE_FORMAT_R32_SNORM
,
141 PIPE_FORMAT_R32G32_SNORM
,
142 PIPE_FORMAT_R32G32B32_SNORM
,
143 PIPE_FORMAT_R32G32B32A32_SNORM
146 PIPE_FORMAT_R32_SINT
,
147 PIPE_FORMAT_R32G32_SINT
,
148 PIPE_FORMAT_R32G32B32_SINT
,
149 PIPE_FORMAT_R32G32B32A32_SINT
152 { /* GL_UNSIGNED_INT */
154 PIPE_FORMAT_R32_USCALED
,
155 PIPE_FORMAT_R32G32_USCALED
,
156 PIPE_FORMAT_R32G32B32_USCALED
,
157 PIPE_FORMAT_R32G32B32A32_USCALED
160 PIPE_FORMAT_R32_UNORM
,
161 PIPE_FORMAT_R32G32_UNORM
,
162 PIPE_FORMAT_R32G32B32_UNORM
,
163 PIPE_FORMAT_R32G32B32A32_UNORM
166 PIPE_FORMAT_R32_UINT
,
167 PIPE_FORMAT_R32G32_UINT
,
168 PIPE_FORMAT_R32G32B32_UINT
,
169 PIPE_FORMAT_R32G32B32A32_UINT
174 PIPE_FORMAT_R32_FLOAT
,
175 PIPE_FORMAT_R32G32_FLOAT
,
176 PIPE_FORMAT_R32G32B32_FLOAT
,
177 PIPE_FORMAT_R32G32B32A32_FLOAT
180 PIPE_FORMAT_R32_FLOAT
,
181 PIPE_FORMAT_R32G32_FLOAT
,
182 PIPE_FORMAT_R32G32B32_FLOAT
,
183 PIPE_FORMAT_R32G32B32A32_FLOAT
186 {{0}}, /* GL_2_BYTES */
187 {{0}}, /* GL_3_BYTES */
188 {{0}}, /* GL_4_BYTES */
191 PIPE_FORMAT_R64_FLOAT
,
192 PIPE_FORMAT_R64G64_FLOAT
,
193 PIPE_FORMAT_R64G64B64_FLOAT
,
194 PIPE_FORMAT_R64G64B64A64_FLOAT
197 PIPE_FORMAT_R64_FLOAT
,
198 PIPE_FORMAT_R64G64_FLOAT
,
199 PIPE_FORMAT_R64G64B64_FLOAT
,
200 PIPE_FORMAT_R64G64B64A64_FLOAT
203 { /* GL_HALF_FLOAT */
205 PIPE_FORMAT_R16_FLOAT
,
206 PIPE_FORMAT_R16G16_FLOAT
,
207 PIPE_FORMAT_R16G16B16_FLOAT
,
208 PIPE_FORMAT_R16G16B16A16_FLOAT
211 PIPE_FORMAT_R16_FLOAT
,
212 PIPE_FORMAT_R16G16_FLOAT
,
213 PIPE_FORMAT_R16G16B16_FLOAT
,
214 PIPE_FORMAT_R16G16B16A16_FLOAT
219 PIPE_FORMAT_R32_FIXED
,
220 PIPE_FORMAT_R32G32_FIXED
,
221 PIPE_FORMAT_R32G32B32_FIXED
,
222 PIPE_FORMAT_R32G32B32A32_FIXED
225 PIPE_FORMAT_R32_FIXED
,
226 PIPE_FORMAT_R32G32_FIXED
,
227 PIPE_FORMAT_R32G32B32_FIXED
,
228 PIPE_FORMAT_R32G32B32A32_FIXED
235 * Return a PIPE_FORMAT_x for the given GL datatype and size.
238 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
239 GLboolean normalized
, GLboolean integer
)
243 assert(size
>= 1 && size
<= 4);
244 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
247 case GL_HALF_FLOAT_OES
:
248 type
= GL_HALF_FLOAT
;
251 case GL_INT_2_10_10_10_REV
:
252 assert(size
== 4 && !integer
);
254 if (format
== GL_BGRA
) {
256 return PIPE_FORMAT_B10G10R10A2_SNORM
;
258 return PIPE_FORMAT_B10G10R10A2_SSCALED
;
261 return PIPE_FORMAT_R10G10B10A2_SNORM
;
263 return PIPE_FORMAT_R10G10B10A2_SSCALED
;
267 case GL_UNSIGNED_INT_2_10_10_10_REV
:
268 assert(size
== 4 && !integer
);
270 if (format
== GL_BGRA
) {
272 return PIPE_FORMAT_B10G10R10A2_UNORM
;
274 return PIPE_FORMAT_B10G10R10A2_USCALED
;
277 return PIPE_FORMAT_R10G10B10A2_UNORM
;
279 return PIPE_FORMAT_R10G10B10A2_USCALED
;
283 case GL_UNSIGNED_INT_10F_11F_11F_REV
:
284 assert(size
== 3 && !integer
&& format
== GL_RGBA
);
285 return PIPE_FORMAT_R11G11B10_FLOAT
;
287 case GL_UNSIGNED_BYTE
:
288 if (format
== GL_BGRA
) {
289 /* this is an odd-ball case */
291 return PIPE_FORMAT_B8G8R8A8_UNORM
;
296 index
= integer
*2 + normalized
;
298 assert(type
>= GL_BYTE
&& type
<= GL_FIXED
);
299 return vertex_formats
[type
- GL_BYTE
][index
][size
-1];
302 static const struct gl_vertex_array
*
303 get_client_array(const struct st_vertex_program
*vp
,
304 const struct gl_vertex_array
**arrays
,
307 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
308 /* st_program uses 0xffffffff to denote a double placeholder attribute */
309 if (mesaAttr
== ST_DOUBLE_ATTRIB_PLACEHOLDER
)
311 return arrays
[mesaAttr
];
315 * Examine the active arrays to determine if we have interleaved
316 * vertex arrays all living in one VBO, or all living in user space.
319 is_interleaved_arrays(const struct st_vertex_program
*vp
,
320 const struct st_vp_variant
*vpv
,
321 const struct gl_vertex_array
**arrays
)
324 const struct gl_buffer_object
*firstBufObj
= NULL
;
325 GLint firstStride
= -1;
326 const GLubyte
*firstPtr
= NULL
;
327 GLboolean userSpaceBuffer
= GL_FALSE
;
329 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
330 const struct gl_vertex_array
*array
;
331 const struct gl_buffer_object
*bufObj
;
334 array
= get_client_array(vp
, arrays
, attr
);
338 stride
= array
->StrideB
; /* in bytes */
339 bufObj
= array
->BufferObj
;
341 /* save info about the first array */
342 firstStride
= stride
;
343 firstPtr
= array
->Ptr
;
344 firstBufObj
= bufObj
;
345 userSpaceBuffer
= !bufObj
|| !bufObj
->Name
;
348 /* check if other arrays interleave with the first, in same buffer */
349 if (stride
!= firstStride
)
350 return GL_FALSE
; /* strides don't match */
352 if (bufObj
!= firstBufObj
)
353 return GL_FALSE
; /* arrays in different VBOs */
355 if (llabs(array
->Ptr
- firstPtr
) > firstStride
)
356 return GL_FALSE
; /* arrays start too far apart */
358 if ((!_mesa_is_bufferobj(bufObj
)) != userSpaceBuffer
)
359 return GL_FALSE
; /* mix of VBO and user-space arrays */
366 static void init_velement(struct pipe_vertex_element
*velement
,
367 int src_offset
, int format
,
368 int instance_divisor
, int vbo_index
)
370 velement
->src_offset
= src_offset
;
371 velement
->src_format
= format
;
372 velement
->instance_divisor
= instance_divisor
;
373 velement
->vertex_buffer_index
= vbo_index
;
374 assert(velement
->src_format
);
377 static void init_velement_lowered(const struct st_vertex_program
*vp
,
378 struct pipe_vertex_element
*velements
,
379 int src_offset
, int format
,
380 int instance_divisor
, int vbo_index
,
381 int nr_components
, GLboolean doubles
,
388 if (nr_components
< 2)
389 lower_format
= PIPE_FORMAT_R32G32_UINT
;
391 lower_format
= PIPE_FORMAT_R32G32B32A32_UINT
;
393 init_velement(&velements
[idx
], src_offset
,
394 lower_format
, instance_divisor
, vbo_index
);
397 if (idx
< vp
->num_inputs
&&
398 vp
->index_to_input
[idx
] == ST_DOUBLE_ATTRIB_PLACEHOLDER
) {
399 if (nr_components
>= 3) {
400 if (nr_components
== 3)
401 lower_format
= PIPE_FORMAT_R32G32_UINT
;
403 lower_format
= PIPE_FORMAT_R32G32B32A32_UINT
;
405 init_velement(&velements
[idx
], src_offset
+ 4 * sizeof(float),
406 lower_format
, instance_divisor
, vbo_index
);
408 /* The values here are undefined. Fill in some conservative
411 init_velement(&velements
[idx
], src_offset
, PIPE_FORMAT_R32G32_UINT
,
412 instance_divisor
, vbo_index
);
418 init_velement(&velements
[idx
], src_offset
,
419 format
, instance_divisor
, vbo_index
);
426 * Set up for drawing interleaved arrays that all live in one VBO
427 * or all live in user space.
428 * \param vbuffer returns vertex buffer info
429 * \param velements returns vertex element info
432 setup_interleaved_attribs(struct st_context
*st
,
433 const struct st_vertex_program
*vp
,
434 const struct st_vp_variant
*vpv
,
435 const struct gl_vertex_array
**arrays
,
436 struct pipe_vertex_buffer
*vbuffer
,
437 struct pipe_vertex_element velements
[])
440 const GLubyte
*low_addr
= NULL
;
441 GLboolean usingVBO
; /* all arrays in a VBO? */
442 struct gl_buffer_object
*bufobj
;
445 /* Find the lowest address of the arrays we're drawing,
446 * Init bufobj and stride.
448 if (vpv
->num_inputs
) {
449 const struct gl_vertex_array
*array
;
451 array
= get_client_array(vp
, arrays
, 0);
454 /* Since we're doing interleaved arrays, we know there'll be at most
455 * one buffer object and the stride will be the same for all arrays.
458 bufobj
= array
->BufferObj
;
459 stride
= array
->StrideB
;
461 low_addr
= arrays
[vp
->index_to_input
[0]]->Ptr
;
463 for (attr
= 1; attr
< vpv
->num_inputs
; attr
++) {
464 const GLubyte
*start
;
465 array
= get_client_array(vp
, arrays
, attr
);
469 low_addr
= MIN2(low_addr
, start
);
473 /* not sure we'll ever have zero inputs, but play it safe */
479 /* are the arrays in user space? */
480 usingVBO
= _mesa_is_bufferobj(bufobj
);
482 for (attr
= 0; attr
< vpv
->num_inputs
;) {
483 const struct gl_vertex_array
*array
;
487 array
= get_client_array(vp
, arrays
, attr
);
490 src_offset
= (unsigned) (array
->Ptr
- low_addr
);
491 assert(array
->_ElementSize
==
492 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
494 src_format
= st_pipe_vertex_format(array
->Type
,
500 init_velement_lowered(vp
, velements
, src_offset
, src_format
,
501 array
->InstanceDivisor
, 0,
502 array
->Size
, array
->Doubles
, &attr
);
506 * Return the vbuffer info and setup user-space attrib info, if needed.
508 if (vpv
->num_inputs
== 0) {
509 /* just defensive coding here */
510 vbuffer
->buffer
= NULL
;
511 vbuffer
->user_buffer
= NULL
;
512 vbuffer
->buffer_offset
= 0;
516 /* all interleaved arrays in a VBO */
517 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
519 if (!stobj
|| !stobj
->buffer
) {
520 return FALSE
; /* out-of-memory error probably */
523 vbuffer
->buffer
= stobj
->buffer
;
524 vbuffer
->user_buffer
= NULL
;
525 vbuffer
->buffer_offset
= pointer_to_offset(low_addr
);
526 vbuffer
->stride
= stride
;
529 /* all interleaved arrays in user memory */
530 vbuffer
->buffer
= NULL
;
531 vbuffer
->user_buffer
= low_addr
;
532 vbuffer
->buffer_offset
= 0;
533 vbuffer
->stride
= stride
;
539 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
541 * \param vbuffer returns vertex buffer info
542 * \param velements returns vertex element info
545 setup_non_interleaved_attribs(struct st_context
*st
,
546 const struct st_vertex_program
*vp
,
547 const struct st_vp_variant
*vpv
,
548 const struct gl_vertex_array
**arrays
,
549 struct pipe_vertex_buffer vbuffer
[],
550 struct pipe_vertex_element velements
[],
551 unsigned *num_vbuffers
)
553 struct gl_context
*ctx
= st
->ctx
;
558 for (attr
= 0; attr
< vpv
->num_inputs
;) {
559 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
560 const struct gl_vertex_array
*array
;
561 struct gl_buffer_object
*bufobj
;
566 array
= get_client_array(vp
, arrays
, attr
);
569 bufidx
= (*num_vbuffers
)++;
571 stride
= array
->StrideB
;
572 bufobj
= array
->BufferObj
;
573 assert(array
->_ElementSize
==
574 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
576 if (_mesa_is_bufferobj(bufobj
)) {
577 /* Attribute data is in a VBO.
578 * Recall that for VBOs, the gl_vertex_array->Ptr field is
579 * really an offset from the start of the VBO, not a pointer.
581 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
583 if (!stobj
|| !stobj
->buffer
) {
584 return FALSE
; /* out-of-memory error probably */
587 vbuffer
[bufidx
].buffer
= stobj
->buffer
;
588 vbuffer
[bufidx
].user_buffer
= NULL
;
589 vbuffer
[bufidx
].buffer_offset
= pointer_to_offset(array
->Ptr
);
596 ptr
= (void *) array
->Ptr
;
599 /* no array, use ctx->Current.Attrib[] value */
600 ptr
= (void *) ctx
->Current
.Attrib
[mesaAttr
];
606 vbuffer
[bufidx
].buffer
= NULL
;
607 vbuffer
[bufidx
].user_buffer
= ptr
;
608 vbuffer
[bufidx
].buffer_offset
= 0;
611 /* common-case setup */
612 vbuffer
[bufidx
].stride
= stride
; /* in bytes */
614 src_format
= st_pipe_vertex_format(array
->Type
,
620 init_velement_lowered(vp
, velements
, 0, src_format
,
621 array
->InstanceDivisor
, bufidx
,
622 array
->Size
, array
->Doubles
, &attr
);
628 void st_update_array(struct st_context
*st
)
630 struct gl_context
*ctx
= st
->ctx
;
631 const struct gl_vertex_array
**arrays
= ctx
->Array
._DrawArrays
;
632 const struct st_vertex_program
*vp
;
633 const struct st_vp_variant
*vpv
;
634 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_ATTRIBS
];
635 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
636 unsigned num_vbuffers
;
638 st
->vertex_array_out_of_memory
= FALSE
;
640 /* No drawing has been done yet, so do nothing. */
644 /* vertex program validation must be done before this */
646 vpv
= st
->vp_variant
;
648 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
651 * Setup the vbuffer[] and velements[] arrays.
653 if (is_interleaved_arrays(vp
, vpv
, arrays
)) {
654 if (!setup_interleaved_attribs(st
, vp
, vpv
, arrays
, vbuffer
, velements
)) {
655 st
->vertex_array_out_of_memory
= TRUE
;
660 if (vpv
->num_inputs
== 0)
664 if (!setup_non_interleaved_attribs(st
, vp
, vpv
, arrays
, vbuffer
,
665 velements
, &num_vbuffers
)) {
666 st
->vertex_array_out_of_memory
= TRUE
;
671 cso_set_vertex_buffers(st
->cso_context
, 0, num_vbuffers
, vbuffer
);
672 if (st
->last_num_vbuffers
> num_vbuffers
) {
673 /* Unbind remaining buffers, if any. */
674 cso_set_vertex_buffers(st
->cso_context
, num_vbuffers
,
675 st
->last_num_vbuffers
- num_vbuffers
, NULL
);
677 st
->last_num_vbuffers
= num_vbuffers
;
678 cso_set_vertex_elements(st
->cso_context
, vpv
->num_inputs
, velements
);