1
2 /**************************************************************************
3 *
4 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
5 * Copyright 2012 Marek Olšák <maraeo@gmail.com>
6 * All Rights Reserved.
7 *
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:
15 *
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
18 * of the Software.
19 *
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.
27 *
28 **************************************************************************/
29
30 /*
31 * This converts the VBO's vertex attribute/array information into
32 * Gallium vertex state and binds it.
33 *
34 * Authors:
35 * Keith Whitwell <keith@tungstengraphics.com>
36 * Marek Olšák <maraeo@gmail.com>
37 */
38
39 #include "st_context.h"
40 #include "st_atom.h"
41 #include "st_cb_bufferobjects.h"
42 #include "st_draw.h"
43 #include "st_program.h"
44
45 #include "cso_cache/cso_context.h"
46 #include "util/u_math.h"
47
48 #include "main/bufferobj.h"
49 #include "main/glformats.h"
50
51
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
57 };
58
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
64 };
65
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
71 };
72
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
78 };
79
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
85 };
86
87 static GLuint uint_types_int[4] = {
88 PIPE_FORMAT_R32_UINT,
89 PIPE_FORMAT_R32G32_UINT,
90 PIPE_FORMAT_R32G32B32_UINT,
91 PIPE_FORMAT_R32G32B32A32_UINT
92 };
93
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
99 };
100
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
106 };
107
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
113 };
114
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
120 };
121
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
127 };
128
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
134 };
135
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
141 };
142
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
148 };
149
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
155 };
156
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
162 };
163
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
169 };
170
171 static GLuint ubyte_types_int[4] = {
172 PIPE_FORMAT_R8_UINT,
173 PIPE_FORMAT_R8G8_UINT,
174 PIPE_FORMAT_R8G8B8_UINT,
175 PIPE_FORMAT_R8G8B8A8_UINT
176 };
177
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
183 };
184
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
190 };
191
192 static GLuint byte_types_int[4] = {
193 PIPE_FORMAT_R8_SINT,
194 PIPE_FORMAT_R8G8_SINT,
195 PIPE_FORMAT_R8G8B8_SINT,
196 PIPE_FORMAT_R8G8B8A8_SINT
197 };
198
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
204 };
205
206
207 /**
208 * Return a PIPE_FORMAT_x for the given GL datatype and size.
209 */
210 enum pipe_format
st_pipe_vertex_format(GLenum type,GLuint size,GLenum format,GLboolean normalized,GLboolean integer)211 st_pipe_vertex_format(GLenum type, GLuint size, GLenum format,
212 GLboolean normalized, GLboolean integer)
213 {
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 assert(size >= 1);
219 assert(size <= 4);
220 assert(format == GL_RGBA || format == GL_BGRA);
221
222 if (type == GL_INT_2_10_10_10_REV ||
223 type == GL_UNSIGNED_INT_2_10_10_10_REV) {
224 assert(size == 4);
225 assert(!integer);
226
227 if (format == GL_BGRA) {
228 if (type == GL_INT_2_10_10_10_REV) {
229 if (normalized)
230 return PIPE_FORMAT_B10G10R10A2_SNORM;
231 else
232 return PIPE_FORMAT_B10G10R10A2_SSCALED;
233 } else {
234 if (normalized)
235 return PIPE_FORMAT_B10G10R10A2_UNORM;
236 else
237 return PIPE_FORMAT_B10G10R10A2_USCALED;
238 }
239 } else {
240 if (type == GL_INT_2_10_10_10_REV) {
241 if (normalized)
242 return PIPE_FORMAT_R10G10B10A2_SNORM;
243 else
244 return PIPE_FORMAT_R10G10B10A2_SSCALED;
245 } else {
246 if (normalized)
247 return PIPE_FORMAT_R10G10B10A2_UNORM;
248 else
249 return PIPE_FORMAT_R10G10B10A2_USCALED;
250 }
251 }
252 }
253
254 if (format == GL_BGRA) {
255 /* this is an odd-ball case */
256 assert(type == GL_UNSIGNED_BYTE);
257 assert(normalized);
258 return PIPE_FORMAT_B8G8R8A8_UNORM;
259 }
260
261 if (integer) {
262 switch (type) {
263 case GL_INT: return int_types_int[size-1];
264 case GL_SHORT: return short_types_int[size-1];
265 case GL_BYTE: return byte_types_int[size-1];
266 case GL_UNSIGNED_INT: return uint_types_int[size-1];
267 case GL_UNSIGNED_SHORT: return ushort_types_int[size-1];
268 case GL_UNSIGNED_BYTE: return ubyte_types_int[size-1];
269 default: assert(0); return 0;
270 }
271 }
272 else if (normalized) {
273 switch (type) {
274 case GL_DOUBLE: return double_types[size-1];
275 case GL_FLOAT: return float_types[size-1];
276 case GL_HALF_FLOAT: return half_float_types[size-1];
277 case GL_INT: return int_types_norm[size-1];
278 case GL_SHORT: return short_types_norm[size-1];
279 case GL_BYTE: return byte_types_norm[size-1];
280 case GL_UNSIGNED_INT: return uint_types_norm[size-1];
281 case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1];
282 case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1];
283 case GL_FIXED: return fixed_types[size-1];
284 default: assert(0); return 0;
285 }
286 }
287 else {
288 switch (type) {
289 case GL_DOUBLE: return double_types[size-1];
290 case GL_FLOAT: return float_types[size-1];
291 case GL_HALF_FLOAT: return half_float_types[size-1];
292 case GL_INT: return int_types_scale[size-1];
293 case GL_SHORT: return short_types_scale[size-1];
294 case GL_BYTE: return byte_types_scale[size-1];
295 case GL_UNSIGNED_INT: return uint_types_scale[size-1];
296 case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1];
297 case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1];
298 case GL_FIXED: return fixed_types[size-1];
299 default: assert(0); return 0;
300 }
301 }
302 return PIPE_FORMAT_NONE; /* silence compiler warning */
303 }
304
305 /**
306 * Examine the active arrays to determine if we have interleaved
307 * vertex arrays all living in one VBO, or all living in user space.
308 */
309 static GLboolean
is_interleaved_arrays(const struct st_vertex_program * vp,const struct st_vp_variant * vpv,const struct gl_client_array ** arrays)310 is_interleaved_arrays(const struct st_vertex_program *vp,
311 const struct st_vp_variant *vpv,
312 const struct gl_client_array **arrays)
313 {
314 GLuint attr;
315 const struct gl_buffer_object *firstBufObj = NULL;
316 GLint firstStride = -1;
317 const GLubyte *firstPtr = NULL;
318 GLboolean userSpaceBuffer = GL_FALSE;
319
320 for (attr = 0; attr < vpv->num_inputs; attr++) {
321 const GLuint mesaAttr = vp->index_to_input[attr];
322 const struct gl_client_array *array = arrays[mesaAttr];
323 const struct gl_buffer_object *bufObj = array->BufferObj;
324 const GLsizei stride = array->StrideB; /* in bytes */
325
326 if (attr == 0) {
327 /* save info about the first array */
328 firstStride = stride;
329 firstPtr = array->Ptr;
330 firstBufObj = bufObj;
331 userSpaceBuffer = !bufObj || !bufObj->Name;
332 }
333 else {
334 /* check if other arrays interleave with the first, in same buffer */
335 if (stride != firstStride)
336 return GL_FALSE; /* strides don't match */
337
338 if (bufObj != firstBufObj)
339 return GL_FALSE; /* arrays in different VBOs */
340
341 if (abs(array->Ptr - firstPtr) > firstStride)
342 return GL_FALSE; /* arrays start too far apart */
343
344 if ((!_mesa_is_bufferobj(bufObj)) != userSpaceBuffer)
345 return GL_FALSE; /* mix of VBO and user-space arrays */
346 }
347 }
348
349 return GL_TRUE;
350 }
351
352 /**
353 * Set up for drawing interleaved arrays that all live in one VBO
354 * or all live in user space.
355 * \param vbuffer returns vertex buffer info
356 * \param velements returns vertex element info
357 */
358 static boolean
setup_interleaved_attribs(const struct st_vertex_program * vp,const struct st_vp_variant * vpv,const struct gl_client_array ** arrays,struct pipe_vertex_buffer * vbuffer,struct pipe_vertex_element velements[])359 setup_interleaved_attribs(const struct st_vertex_program *vp,
360 const struct st_vp_variant *vpv,
361 const struct gl_client_array **arrays,
362 struct pipe_vertex_buffer *vbuffer,
363 struct pipe_vertex_element velements[])
364 {
365 GLuint attr;
366 const GLubyte *low_addr = NULL;
367 GLboolean usingVBO; /* all arrays in a VBO? */
368 struct gl_buffer_object *bufobj;
369 GLsizei stride;
370
371 /* Find the lowest address of the arrays we're drawing,
372 * Init bufobj and stride.
373 */
374 if (vpv->num_inputs) {
375 const GLuint mesaAttr0 = vp->index_to_input[0];
376 const struct gl_client_array *array = arrays[mesaAttr0];
377
378 /* Since we're doing interleaved arrays, we know there'll be at most
379 * one buffer object and the stride will be the same for all arrays.
380 * Grab them now.
381 */
382 bufobj = array->BufferObj;
383 stride = array->StrideB;
384
385 low_addr = arrays[vp->index_to_input[0]]->Ptr;
386
387 for (attr = 1; attr < vpv->num_inputs; attr++) {
388 const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr;
389 low_addr = MIN2(low_addr, start);
390 }
391 }
392 else {
393 /* not sure we'll ever have zero inputs, but play it safe */
394 bufobj = NULL;
395 stride = 0;
396 low_addr = 0;
397 }
398
399 /* are the arrays in user space? */
400 usingVBO = _mesa_is_bufferobj(bufobj);
401
402 for (attr = 0; attr < vpv->num_inputs; attr++) {
403 const GLuint mesaAttr = vp->index_to_input[attr];
404 const struct gl_client_array *array = arrays[mesaAttr];
405 unsigned src_offset = (unsigned) (array->Ptr - low_addr);
406 GLuint element_size = array->_ElementSize;
407
408 assert(element_size == array->Size * _mesa_sizeof_type(array->Type));
409
410 velements[attr].src_offset = src_offset;
411 velements[attr].instance_divisor = array->InstanceDivisor;
412 velements[attr].vertex_buffer_index = 0;
413 velements[attr].src_format = st_pipe_vertex_format(array->Type,
414 array->Size,
415 array->Format,
416 array->Normalized,
417 array->Integer);
418 assert(velements[attr].src_format);
419 }
420
421 /*
422 * Return the vbuffer info and setup user-space attrib info, if needed.
423 */
424 if (vpv->num_inputs == 0) {
425 /* just defensive coding here */
426 vbuffer->buffer = NULL;
427 vbuffer->user_buffer = NULL;
428 vbuffer->buffer_offset = 0;
429 vbuffer->stride = 0;
430 }
431 else if (usingVBO) {
432 /* all interleaved arrays in a VBO */
433 struct st_buffer_object *stobj = st_buffer_object(bufobj);
434
435 if (!stobj || !stobj->buffer) {
436 return FALSE; /* out-of-memory error probably */
437 }
438
439 vbuffer->buffer = stobj->buffer;
440 vbuffer->user_buffer = NULL;
441 vbuffer->buffer_offset = pointer_to_offset(low_addr);
442 vbuffer->stride = stride;
443 }
444 else {
445 /* all interleaved arrays in user memory */
446 vbuffer->buffer = NULL;
447 vbuffer->user_buffer = low_addr;
448 vbuffer->buffer_offset = 0;
449 vbuffer->stride = stride;
450 }
451 return TRUE;
452 }
453
454 /**
455 * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
456 * vertex attribute.
457 * \param vbuffer returns vertex buffer info
458 * \param velements returns vertex element info
459 */
460 static boolean
setup_non_interleaved_attribs(struct st_context * st,const struct st_vertex_program * vp,const struct st_vp_variant * vpv,const struct gl_client_array ** arrays,struct pipe_vertex_buffer vbuffer[],struct pipe_vertex_element velements[])461 setup_non_interleaved_attribs(struct st_context *st,
462 const struct st_vertex_program *vp,
463 const struct st_vp_variant *vpv,
464 const struct gl_client_array **arrays,
465 struct pipe_vertex_buffer vbuffer[],
466 struct pipe_vertex_element velements[])
467 {
468 struct gl_context *ctx = st->ctx;
469 GLuint attr;
470
471 for (attr = 0; attr < vpv->num_inputs; attr++) {
472 const GLuint mesaAttr = vp->index_to_input[attr];
473 const struct gl_client_array *array = arrays[mesaAttr];
474 struct gl_buffer_object *bufobj = array->BufferObj;
475 GLsizei stride = array->StrideB;
476
477 assert(array->_ElementSize == array->Size * _mesa_sizeof_type(array->Type));
478
479 if (_mesa_is_bufferobj(bufobj)) {
480 /* Attribute data is in a VBO.
481 * Recall that for VBOs, the gl_client_array->Ptr field is
482 * really an offset from the start of the VBO, not a pointer.
483 */
484 struct st_buffer_object *stobj = st_buffer_object(bufobj);
485
486 if (!stobj || !stobj->buffer) {
487 return FALSE; /* out-of-memory error probably */
488 }
489
490 vbuffer[attr].buffer = stobj->buffer;
491 vbuffer[attr].user_buffer = NULL;
492 vbuffer[attr].buffer_offset = pointer_to_offset(array->Ptr);
493 }
494 else {
495 /* wrap user data */
496 void *ptr;
497
498 if (array->Ptr) {
499 ptr = (void *) array->Ptr;
500 }
501 else {
502 /* no array, use ctx->Current.Attrib[] value */
503 ptr = (void *) ctx->Current.Attrib[mesaAttr];
504 stride = 0;
505 }
506
507 assert(ptr);
508
509 vbuffer[attr].buffer = NULL;
510 vbuffer[attr].user_buffer = ptr;
511 vbuffer[attr].buffer_offset = 0;
512 }
513
514 /* common-case setup */
515 vbuffer[attr].stride = stride; /* in bytes */
516
517 velements[attr].src_offset = 0;
518 velements[attr].instance_divisor = array->InstanceDivisor;
519 velements[attr].vertex_buffer_index = attr;
520 velements[attr].src_format = st_pipe_vertex_format(array->Type,
521 array->Size,
522 array->Format,
523 array->Normalized,
524 array->Integer);
525 assert(velements[attr].src_format);
526 }
527 return TRUE;
528 }
529
update_array(struct st_context * st)530 static void update_array(struct st_context *st)
531 {
532 struct gl_context *ctx = st->ctx;
533 const struct gl_client_array **arrays = ctx->Array._DrawArrays;
534 const struct st_vertex_program *vp;
535 const struct st_vp_variant *vpv;
536 struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
537 struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
538 unsigned num_vbuffers, num_velements;
539
540 st->vertex_array_out_of_memory = FALSE;
541
542 /* No drawing has been done yet, so do nothing. */
543 if (!arrays)
544 return;
545
546 /* vertex program validation must be done before this */
547 vp = st->vp;
548 vpv = st->vp_variant;
549
550 memset(velements, 0, sizeof(struct pipe_vertex_element) * vpv->num_inputs);
551
552 /*
553 * Setup the vbuffer[] and velements[] arrays.
554 */
555 if (is_interleaved_arrays(vp, vpv, arrays)) {
556 if (!setup_interleaved_attribs(vp, vpv, arrays, vbuffer, velements)) {
557 st->vertex_array_out_of_memory = TRUE;
558 return;
559 }
560
561 num_vbuffers = 1;
562 num_velements = vpv->num_inputs;
563 if (num_velements == 0)
564 num_vbuffers = 0;
565 }
566 else {
567 if (!setup_non_interleaved_attribs(st, vp, vpv, arrays, vbuffer,
568 velements)) {
569 st->vertex_array_out_of_memory = TRUE;
570 return;
571 }
572
573 num_vbuffers = vpv->num_inputs;
574 num_velements = vpv->num_inputs;
575 }
576
577 cso_set_vertex_buffers(st->cso_context, num_vbuffers, vbuffer);
578 cso_set_vertex_elements(st->cso_context, num_velements, velements);
579 }
580
581
582 const struct st_tracked_state st_update_array = {
583 "st_update_array", /* name */
584 { /* dirty */
585 (_NEW_PROGRAM | _NEW_BUFFER_OBJECT), /* mesa */
586 ST_NEW_VERTEX_ARRAYS | ST_NEW_VERTEX_PROGRAM, /* st */
587 },
588 update_array /* update */
589 };
590