2 /**************************************************************************
4 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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 <keith@tungstengraphics.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"
48 #include "main/bufferobj.h"
49 #include "main/glformats.h"
52 static GLuint double_types
[4] = {
53 PIPE_FORMAT_R64_FLOAT
,
54 PIPE_FORMAT_R64G64_FLOAT
,
55 PIPE_FORMAT_R64G64B64_FLOAT
,
56 PIPE_FORMAT_R64G64B64A64_FLOAT
59 static GLuint float_types
[4] = {
60 PIPE_FORMAT_R32_FLOAT
,
61 PIPE_FORMAT_R32G32_FLOAT
,
62 PIPE_FORMAT_R32G32B32_FLOAT
,
63 PIPE_FORMAT_R32G32B32A32_FLOAT
66 static GLuint half_float_types
[4] = {
67 PIPE_FORMAT_R16_FLOAT
,
68 PIPE_FORMAT_R16G16_FLOAT
,
69 PIPE_FORMAT_R16G16B16_FLOAT
,
70 PIPE_FORMAT_R16G16B16A16_FLOAT
73 static GLuint uint_types_norm
[4] = {
74 PIPE_FORMAT_R32_UNORM
,
75 PIPE_FORMAT_R32G32_UNORM
,
76 PIPE_FORMAT_R32G32B32_UNORM
,
77 PIPE_FORMAT_R32G32B32A32_UNORM
80 static GLuint uint_types_scale
[4] = {
81 PIPE_FORMAT_R32_USCALED
,
82 PIPE_FORMAT_R32G32_USCALED
,
83 PIPE_FORMAT_R32G32B32_USCALED
,
84 PIPE_FORMAT_R32G32B32A32_USCALED
87 static GLuint uint_types_int
[4] = {
89 PIPE_FORMAT_R32G32_UINT
,
90 PIPE_FORMAT_R32G32B32_UINT
,
91 PIPE_FORMAT_R32G32B32A32_UINT
94 static GLuint int_types_norm
[4] = {
95 PIPE_FORMAT_R32_SNORM
,
96 PIPE_FORMAT_R32G32_SNORM
,
97 PIPE_FORMAT_R32G32B32_SNORM
,
98 PIPE_FORMAT_R32G32B32A32_SNORM
101 static GLuint int_types_scale
[4] = {
102 PIPE_FORMAT_R32_SSCALED
,
103 PIPE_FORMAT_R32G32_SSCALED
,
104 PIPE_FORMAT_R32G32B32_SSCALED
,
105 PIPE_FORMAT_R32G32B32A32_SSCALED
108 static GLuint int_types_int
[4] = {
109 PIPE_FORMAT_R32_SINT
,
110 PIPE_FORMAT_R32G32_SINT
,
111 PIPE_FORMAT_R32G32B32_SINT
,
112 PIPE_FORMAT_R32G32B32A32_SINT
115 static GLuint ushort_types_norm
[4] = {
116 PIPE_FORMAT_R16_UNORM
,
117 PIPE_FORMAT_R16G16_UNORM
,
118 PIPE_FORMAT_R16G16B16_UNORM
,
119 PIPE_FORMAT_R16G16B16A16_UNORM
122 static GLuint ushort_types_scale
[4] = {
123 PIPE_FORMAT_R16_USCALED
,
124 PIPE_FORMAT_R16G16_USCALED
,
125 PIPE_FORMAT_R16G16B16_USCALED
,
126 PIPE_FORMAT_R16G16B16A16_USCALED
129 static GLuint ushort_types_int
[4] = {
130 PIPE_FORMAT_R16_UINT
,
131 PIPE_FORMAT_R16G16_UINT
,
132 PIPE_FORMAT_R16G16B16_UINT
,
133 PIPE_FORMAT_R16G16B16A16_UINT
136 static GLuint short_types_norm
[4] = {
137 PIPE_FORMAT_R16_SNORM
,
138 PIPE_FORMAT_R16G16_SNORM
,
139 PIPE_FORMAT_R16G16B16_SNORM
,
140 PIPE_FORMAT_R16G16B16A16_SNORM
143 static GLuint short_types_scale
[4] = {
144 PIPE_FORMAT_R16_SSCALED
,
145 PIPE_FORMAT_R16G16_SSCALED
,
146 PIPE_FORMAT_R16G16B16_SSCALED
,
147 PIPE_FORMAT_R16G16B16A16_SSCALED
150 static GLuint short_types_int
[4] = {
151 PIPE_FORMAT_R16_SINT
,
152 PIPE_FORMAT_R16G16_SINT
,
153 PIPE_FORMAT_R16G16B16_SINT
,
154 PIPE_FORMAT_R16G16B16A16_SINT
157 static GLuint ubyte_types_norm
[4] = {
158 PIPE_FORMAT_R8_UNORM
,
159 PIPE_FORMAT_R8G8_UNORM
,
160 PIPE_FORMAT_R8G8B8_UNORM
,
161 PIPE_FORMAT_R8G8B8A8_UNORM
164 static GLuint ubyte_types_scale
[4] = {
165 PIPE_FORMAT_R8_USCALED
,
166 PIPE_FORMAT_R8G8_USCALED
,
167 PIPE_FORMAT_R8G8B8_USCALED
,
168 PIPE_FORMAT_R8G8B8A8_USCALED
171 static GLuint ubyte_types_int
[4] = {
173 PIPE_FORMAT_R8G8_UINT
,
174 PIPE_FORMAT_R8G8B8_UINT
,
175 PIPE_FORMAT_R8G8B8A8_UINT
178 static GLuint byte_types_norm
[4] = {
179 PIPE_FORMAT_R8_SNORM
,
180 PIPE_FORMAT_R8G8_SNORM
,
181 PIPE_FORMAT_R8G8B8_SNORM
,
182 PIPE_FORMAT_R8G8B8A8_SNORM
185 static GLuint byte_types_scale
[4] = {
186 PIPE_FORMAT_R8_SSCALED
,
187 PIPE_FORMAT_R8G8_SSCALED
,
188 PIPE_FORMAT_R8G8B8_SSCALED
,
189 PIPE_FORMAT_R8G8B8A8_SSCALED
192 static GLuint byte_types_int
[4] = {
194 PIPE_FORMAT_R8G8_SINT
,
195 PIPE_FORMAT_R8G8B8_SINT
,
196 PIPE_FORMAT_R8G8B8A8_SINT
199 static GLuint fixed_types
[4] = {
200 PIPE_FORMAT_R32_FIXED
,
201 PIPE_FORMAT_R32G32_FIXED
,
202 PIPE_FORMAT_R32G32B32_FIXED
,
203 PIPE_FORMAT_R32G32B32A32_FIXED
208 * Return a PIPE_FORMAT_x for the given GL datatype and size.
211 st_pipe_vertex_format(GLenum type
, GLuint size
, GLenum format
,
212 GLboolean normalized
, GLboolean integer
)
214 assert((type
>= GL_BYTE
&& type
<= GL_DOUBLE
) ||
215 type
== GL_FIXED
|| type
== GL_HALF_FLOAT
||
216 type
== GL_INT_2_10_10_10_REV
||
217 type
== GL_UNSIGNED_INT_2_10_10_10_REV
||
218 type
== GL_UNSIGNED_INT_10F_11F_11F_REV
);
221 assert(format
== GL_RGBA
|| format
== GL_BGRA
);
223 if (type
== GL_INT_2_10_10_10_REV
||
224 type
== GL_UNSIGNED_INT_2_10_10_10_REV
) {
228 if (format
== GL_BGRA
) {
229 if (type
== GL_INT_2_10_10_10_REV
) {
231 return PIPE_FORMAT_B10G10R10A2_SNORM
;
233 return PIPE_FORMAT_B10G10R10A2_SSCALED
;
236 return PIPE_FORMAT_B10G10R10A2_UNORM
;
238 return PIPE_FORMAT_B10G10R10A2_USCALED
;
241 if (type
== GL_INT_2_10_10_10_REV
) {
243 return PIPE_FORMAT_R10G10B10A2_SNORM
;
245 return PIPE_FORMAT_R10G10B10A2_SSCALED
;
248 return PIPE_FORMAT_R10G10B10A2_UNORM
;
250 return PIPE_FORMAT_R10G10B10A2_USCALED
;
255 if (type
== GL_UNSIGNED_INT_10F_11F_11F_REV
) {
258 assert(format
== GL_RGBA
);
260 return PIPE_FORMAT_R11G11B10_FLOAT
;
263 if (format
== GL_BGRA
) {
264 /* this is an odd-ball case */
265 assert(type
== GL_UNSIGNED_BYTE
);
267 return PIPE_FORMAT_B8G8R8A8_UNORM
;
272 case GL_INT
: return int_types_int
[size
-1];
273 case GL_SHORT
: return short_types_int
[size
-1];
274 case GL_BYTE
: return byte_types_int
[size
-1];
275 case GL_UNSIGNED_INT
: return uint_types_int
[size
-1];
276 case GL_UNSIGNED_SHORT
: return ushort_types_int
[size
-1];
277 case GL_UNSIGNED_BYTE
: return ubyte_types_int
[size
-1];
278 default: assert(0); return 0;
281 else if (normalized
) {
283 case GL_DOUBLE
: return double_types
[size
-1];
284 case GL_FLOAT
: return float_types
[size
-1];
285 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
286 case GL_INT
: return int_types_norm
[size
-1];
287 case GL_SHORT
: return short_types_norm
[size
-1];
288 case GL_BYTE
: return byte_types_norm
[size
-1];
289 case GL_UNSIGNED_INT
: return uint_types_norm
[size
-1];
290 case GL_UNSIGNED_SHORT
: return ushort_types_norm
[size
-1];
291 case GL_UNSIGNED_BYTE
: return ubyte_types_norm
[size
-1];
292 case GL_FIXED
: return fixed_types
[size
-1];
293 default: assert(0); return 0;
298 case GL_DOUBLE
: return double_types
[size
-1];
299 case GL_FLOAT
: return float_types
[size
-1];
300 case GL_HALF_FLOAT
: return half_float_types
[size
-1];
301 case GL_INT
: return int_types_scale
[size
-1];
302 case GL_SHORT
: return short_types_scale
[size
-1];
303 case GL_BYTE
: return byte_types_scale
[size
-1];
304 case GL_UNSIGNED_INT
: return uint_types_scale
[size
-1];
305 case GL_UNSIGNED_SHORT
: return ushort_types_scale
[size
-1];
306 case GL_UNSIGNED_BYTE
: return ubyte_types_scale
[size
-1];
307 case GL_FIXED
: return fixed_types
[size
-1];
308 default: assert(0); return 0;
311 return PIPE_FORMAT_NONE
; /* silence compiler warning */
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_client_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 GLuint mesaAttr
= vp
->index_to_input
[attr
];
331 const struct gl_client_array
*array
= arrays
[mesaAttr
];
332 const struct gl_buffer_object
*bufObj
= array
->BufferObj
;
333 const GLsizei stride
= array
->StrideB
; /* in bytes */
336 /* save info about the first array */
337 firstStride
= stride
;
338 firstPtr
= array
->Ptr
;
339 firstBufObj
= bufObj
;
340 userSpaceBuffer
= !bufObj
|| !bufObj
->Name
;
343 /* check if other arrays interleave with the first, in same buffer */
344 if (stride
!= firstStride
)
345 return GL_FALSE
; /* strides don't match */
347 if (bufObj
!= firstBufObj
)
348 return GL_FALSE
; /* arrays in different VBOs */
350 if (abs(array
->Ptr
- firstPtr
) > firstStride
)
351 return GL_FALSE
; /* arrays start too far apart */
353 if ((!_mesa_is_bufferobj(bufObj
)) != userSpaceBuffer
)
354 return GL_FALSE
; /* mix of VBO and user-space arrays */
362 * Set up for drawing interleaved arrays that all live in one VBO
363 * or all live in user space.
364 * \param vbuffer returns vertex buffer info
365 * \param velements returns vertex element info
368 setup_interleaved_attribs(const struct st_vertex_program
*vp
,
369 const struct st_vp_variant
*vpv
,
370 const struct gl_client_array
**arrays
,
371 struct pipe_vertex_buffer
*vbuffer
,
372 struct pipe_vertex_element velements
[])
375 const GLubyte
*low_addr
= NULL
;
376 GLboolean usingVBO
; /* all arrays in a VBO? */
377 struct gl_buffer_object
*bufobj
;
380 /* Find the lowest address of the arrays we're drawing,
381 * Init bufobj and stride.
383 if (vpv
->num_inputs
) {
384 const GLuint mesaAttr0
= vp
->index_to_input
[0];
385 const struct gl_client_array
*array
= arrays
[mesaAttr0
];
387 /* Since we're doing interleaved arrays, we know there'll be at most
388 * one buffer object and the stride will be the same for all arrays.
391 bufobj
= array
->BufferObj
;
392 stride
= array
->StrideB
;
394 low_addr
= arrays
[vp
->index_to_input
[0]]->Ptr
;
396 for (attr
= 1; attr
< vpv
->num_inputs
; attr
++) {
397 const GLubyte
*start
= arrays
[vp
->index_to_input
[attr
]]->Ptr
;
398 low_addr
= MIN2(low_addr
, start
);
402 /* not sure we'll ever have zero inputs, but play it safe */
408 /* are the arrays in user space? */
409 usingVBO
= _mesa_is_bufferobj(bufobj
);
411 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
412 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
413 const struct gl_client_array
*array
= arrays
[mesaAttr
];
414 unsigned src_offset
= (unsigned) (array
->Ptr
- low_addr
);
416 assert(array
->_ElementSize
==
417 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
419 velements
[attr
].src_offset
= src_offset
;
420 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
421 velements
[attr
].vertex_buffer_index
= 0;
422 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
427 assert(velements
[attr
].src_format
);
431 * Return the vbuffer info and setup user-space attrib info, if needed.
433 if (vpv
->num_inputs
== 0) {
434 /* just defensive coding here */
435 vbuffer
->buffer
= NULL
;
436 vbuffer
->user_buffer
= NULL
;
437 vbuffer
->buffer_offset
= 0;
441 /* all interleaved arrays in a VBO */
442 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
444 if (!stobj
|| !stobj
->buffer
) {
445 return FALSE
; /* out-of-memory error probably */
448 vbuffer
->buffer
= stobj
->buffer
;
449 vbuffer
->user_buffer
= NULL
;
450 vbuffer
->buffer_offset
= pointer_to_offset(low_addr
);
451 vbuffer
->stride
= stride
;
454 /* all interleaved arrays in user memory */
455 vbuffer
->buffer
= NULL
;
456 vbuffer
->user_buffer
= low_addr
;
457 vbuffer
->buffer_offset
= 0;
458 vbuffer
->stride
= stride
;
464 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
466 * \param vbuffer returns vertex buffer info
467 * \param velements returns vertex element info
470 setup_non_interleaved_attribs(struct st_context
*st
,
471 const struct st_vertex_program
*vp
,
472 const struct st_vp_variant
*vpv
,
473 const struct gl_client_array
**arrays
,
474 struct pipe_vertex_buffer vbuffer
[],
475 struct pipe_vertex_element velements
[])
477 struct gl_context
*ctx
= st
->ctx
;
480 for (attr
= 0; attr
< vpv
->num_inputs
; attr
++) {
481 const GLuint mesaAttr
= vp
->index_to_input
[attr
];
482 const struct gl_client_array
*array
= arrays
[mesaAttr
];
483 struct gl_buffer_object
*bufobj
= array
->BufferObj
;
484 GLsizei stride
= array
->StrideB
;
486 assert(array
->_ElementSize
==
487 _mesa_bytes_per_vertex_attrib(array
->Size
, array
->Type
));
489 if (_mesa_is_bufferobj(bufobj
)) {
490 /* Attribute data is in a VBO.
491 * Recall that for VBOs, the gl_client_array->Ptr field is
492 * really an offset from the start of the VBO, not a pointer.
494 struct st_buffer_object
*stobj
= st_buffer_object(bufobj
);
496 if (!stobj
|| !stobj
->buffer
) {
497 return FALSE
; /* out-of-memory error probably */
500 vbuffer
[attr
].buffer
= stobj
->buffer
;
501 vbuffer
[attr
].user_buffer
= NULL
;
502 vbuffer
[attr
].buffer_offset
= pointer_to_offset(array
->Ptr
);
509 ptr
= (void *) array
->Ptr
;
512 /* no array, use ctx->Current.Attrib[] value */
513 ptr
= (void *) ctx
->Current
.Attrib
[mesaAttr
];
519 vbuffer
[attr
].buffer
= NULL
;
520 vbuffer
[attr
].user_buffer
= ptr
;
521 vbuffer
[attr
].buffer_offset
= 0;
524 /* common-case setup */
525 vbuffer
[attr
].stride
= stride
; /* in bytes */
527 velements
[attr
].src_offset
= 0;
528 velements
[attr
].instance_divisor
= array
->InstanceDivisor
;
529 velements
[attr
].vertex_buffer_index
= attr
;
530 velements
[attr
].src_format
= st_pipe_vertex_format(array
->Type
,
535 assert(velements
[attr
].src_format
);
540 static void update_array(struct st_context
*st
)
542 struct gl_context
*ctx
= st
->ctx
;
543 const struct gl_client_array
**arrays
= ctx
->Array
._DrawArrays
;
544 const struct st_vertex_program
*vp
;
545 const struct st_vp_variant
*vpv
;
546 struct pipe_vertex_buffer vbuffer
[PIPE_MAX_SHADER_INPUTS
];
547 struct pipe_vertex_element velements
[PIPE_MAX_ATTRIBS
];
548 unsigned num_vbuffers
, num_velements
;
550 st
->vertex_array_out_of_memory
= FALSE
;
552 /* No drawing has been done yet, so do nothing. */
556 /* vertex program validation must be done before this */
558 vpv
= st
->vp_variant
;
560 memset(velements
, 0, sizeof(struct pipe_vertex_element
) * vpv
->num_inputs
);
563 * Setup the vbuffer[] and velements[] arrays.
565 if (is_interleaved_arrays(vp
, vpv
, arrays
)) {
566 if (!setup_interleaved_attribs(vp
, vpv
, arrays
, vbuffer
, velements
)) {
567 st
->vertex_array_out_of_memory
= TRUE
;
572 num_velements
= vpv
->num_inputs
;
573 if (num_velements
== 0)
577 if (!setup_non_interleaved_attribs(st
, vp
, vpv
, arrays
, vbuffer
,
579 st
->vertex_array_out_of_memory
= TRUE
;
583 num_vbuffers
= vpv
->num_inputs
;
584 num_velements
= vpv
->num_inputs
;
587 cso_set_vertex_buffers(st
->cso_context
, 0, num_vbuffers
, vbuffer
);
588 if (st
->last_num_vbuffers
> num_vbuffers
) {
589 /* Unbind remaining buffers, if any. */
590 cso_set_vertex_buffers(st
->cso_context
, num_vbuffers
,
591 st
->last_num_vbuffers
- num_vbuffers
, NULL
);
593 st
->last_num_vbuffers
= num_vbuffers
;
594 cso_set_vertex_elements(st
->cso_context
, num_velements
, velements
);
598 const struct st_tracked_state st_update_array
= {
599 "st_update_array", /* name */
602 ST_NEW_VERTEX_ARRAYS
| ST_NEW_VERTEX_PROGRAM
, /* st */
604 update_array
/* update */