1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2010 LunarG Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Chia-I Wu <olv@lunarg.com>
26 */
27
28 #include "main/mtypes.h"
29 #include "main/extensions.h"
30 #include "main/context.h"
31 #include "main/debug_output.h"
32 #include "main/framebuffer.h"
33 #include "main/glthread.h"
34 #include "main/texobj.h"
35 #include "main/teximage.h"
36 #include "main/texstate.h"
37 #include "main/errors.h"
38 #include "main/framebuffer.h"
39 #include "main/fbobject.h"
40 #include "main/renderbuffer.h"
41 #include "main/version.h"
42 #include "util/hash_table.h"
43 #include "st_texture.h"
44
45 #include "st_context.h"
46 #include "st_debug.h"
47 #include "st_extensions.h"
48 #include "st_format.h"
49 #include "st_cb_bitmap.h"
50 #include "st_cb_flush.h"
51 #include "st_manager.h"
52 #include "st_sampler_view.h"
53 #include "st_util.h"
54
55 #include "state_tracker/st_gl_api.h"
56
57 #include "pipe/p_context.h"
58 #include "pipe/p_screen.h"
59 #include "util/format/u_format.h"
60 #include "util/u_helpers.h"
61 #include "util/u_pointer.h"
62 #include "util/u_inlines.h"
63 #include "util/u_atomic.h"
64 #include "util/u_surface.h"
65 #include "util/list.h"
66 #include "util/u_memory.h"
67
68 struct hash_table;
69 struct st_manager_private
70 {
71 struct hash_table *stfbi_ht; /* framebuffer iface objects hash table */
72 simple_mtx_t st_mutex;
73 };
74
75 /**
76 * Cast wrapper to convert a struct gl_framebuffer to an gl_framebuffer.
77 * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
78 * We'll only return non-null for window system framebuffers.
79 * Note that this function may fail.
80 */
81 static inline struct gl_framebuffer *
st_ws_framebuffer(struct gl_framebuffer * fb)82 st_ws_framebuffer(struct gl_framebuffer *fb)
83 {
84 /* FBO cannot be casted. See st_new_framebuffer */
85 if (fb && _mesa_is_winsys_fbo(fb) &&
86 fb != _mesa_get_incomplete_framebuffer())
87 return fb;
88 return NULL;
89 }
90
91 /**
92 * Map an attachment to a buffer index.
93 */
94 static inline gl_buffer_index
attachment_to_buffer_index(enum st_attachment_type statt)95 attachment_to_buffer_index(enum st_attachment_type statt)
96 {
97 gl_buffer_index index;
98
99 switch (statt) {
100 case ST_ATTACHMENT_FRONT_LEFT:
101 index = BUFFER_FRONT_LEFT;
102 break;
103 case ST_ATTACHMENT_BACK_LEFT:
104 index = BUFFER_BACK_LEFT;
105 break;
106 case ST_ATTACHMENT_FRONT_RIGHT:
107 index = BUFFER_FRONT_RIGHT;
108 break;
109 case ST_ATTACHMENT_BACK_RIGHT:
110 index = BUFFER_BACK_RIGHT;
111 break;
112 case ST_ATTACHMENT_DEPTH_STENCIL:
113 index = BUFFER_DEPTH;
114 break;
115 case ST_ATTACHMENT_ACCUM:
116 index = BUFFER_ACCUM;
117 break;
118 default:
119 index = BUFFER_COUNT;
120 break;
121 }
122
123 return index;
124 }
125
126
127 /**
128 * Map a buffer index to an attachment.
129 */
130 static inline enum st_attachment_type
buffer_index_to_attachment(gl_buffer_index index)131 buffer_index_to_attachment(gl_buffer_index index)
132 {
133 enum st_attachment_type statt;
134
135 switch (index) {
136 case BUFFER_FRONT_LEFT:
137 statt = ST_ATTACHMENT_FRONT_LEFT;
138 break;
139 case BUFFER_BACK_LEFT:
140 statt = ST_ATTACHMENT_BACK_LEFT;
141 break;
142 case BUFFER_FRONT_RIGHT:
143 statt = ST_ATTACHMENT_FRONT_RIGHT;
144 break;
145 case BUFFER_BACK_RIGHT:
146 statt = ST_ATTACHMENT_BACK_RIGHT;
147 break;
148 case BUFFER_DEPTH:
149 statt = ST_ATTACHMENT_DEPTH_STENCIL;
150 break;
151 case BUFFER_ACCUM:
152 statt = ST_ATTACHMENT_ACCUM;
153 break;
154 default:
155 statt = ST_ATTACHMENT_INVALID;
156 break;
157 }
158
159 return statt;
160 }
161
162
163 /**
164 * Make sure a context picks up the latest cached state of the
165 * drawables it binds to.
166 */
167 static void
st_context_validate(struct st_context * st,struct gl_framebuffer * stdraw,struct gl_framebuffer * stread)168 st_context_validate(struct st_context *st,
169 struct gl_framebuffer *stdraw,
170 struct gl_framebuffer *stread)
171 {
172 if (stdraw && stdraw->stamp != st->draw_stamp) {
173 st->dirty |= ST_NEW_FRAMEBUFFER;
174 _mesa_resize_framebuffer(st->ctx, stdraw,
175 stdraw->Width,
176 stdraw->Height);
177 st->draw_stamp = stdraw->stamp;
178 }
179
180 if (stread && stread->stamp != st->read_stamp) {
181 if (stread != stdraw) {
182 st->dirty |= ST_NEW_FRAMEBUFFER;
183 _mesa_resize_framebuffer(st->ctx, stread,
184 stread->Width,
185 stread->Height);
186 }
187 st->read_stamp = stread->stamp;
188 }
189 }
190
191
192 void
st_set_ws_renderbuffer_surface(struct gl_renderbuffer * rb,struct pipe_surface * surf)193 st_set_ws_renderbuffer_surface(struct gl_renderbuffer *rb,
194 struct pipe_surface *surf)
195 {
196 pipe_surface_reference(&rb->surface_srgb, NULL);
197 pipe_surface_reference(&rb->surface_linear, NULL);
198
199 if (util_format_is_srgb(surf->format))
200 pipe_surface_reference(&rb->surface_srgb, surf);
201 else
202 pipe_surface_reference(&rb->surface_linear, surf);
203
204 rb->surface = surf; /* just assign, don't ref */
205 pipe_resource_reference(&rb->texture, surf->texture);
206
207 rb->Width = surf->width;
208 rb->Height = surf->height;
209 }
210
211
212 /**
213 * Validate a framebuffer to make sure up-to-date pipe_textures are used.
214 * The context is only used for creating pipe surfaces and for calling
215 * _mesa_resize_framebuffer().
216 * (That should probably be rethought, since those surfaces become
217 * drawable state, not context state, and can be freed by another pipe
218 * context).
219 */
220 static void
st_framebuffer_validate(struct gl_framebuffer * stfb,struct st_context * st)221 st_framebuffer_validate(struct gl_framebuffer *stfb,
222 struct st_context *st)
223 {
224 struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
225 uint width, height;
226 unsigned i;
227 bool changed = false;
228 int32_t new_stamp;
229
230 new_stamp = p_atomic_read(&stfb->iface->stamp);
231 if (stfb->iface_stamp == new_stamp)
232 return;
233
234 memset(textures, 0, stfb->num_statts * sizeof(textures[0]));
235
236 /* validate the fb */
237 do {
238 if (!stfb->iface->validate(&st->iface, stfb->iface, stfb->statts,
239 stfb->num_statts, textures))
240 return;
241
242 stfb->iface_stamp = new_stamp;
243 new_stamp = p_atomic_read(&stfb->iface->stamp);
244 } while(stfb->iface_stamp != new_stamp);
245
246 width = stfb->Width;
247 height = stfb->Height;
248
249 for (i = 0; i < stfb->num_statts; i++) {
250 struct gl_renderbuffer *rb;
251 struct pipe_surface *ps, surf_tmpl;
252 gl_buffer_index idx;
253
254 if (!textures[i])
255 continue;
256
257 idx = attachment_to_buffer_index(stfb->statts[i]);
258 if (idx >= BUFFER_COUNT) {
259 pipe_resource_reference(&textures[i], NULL);
260 continue;
261 }
262
263 rb = stfb->Attachment[idx].Renderbuffer;
264 assert(rb);
265 if (rb->texture == textures[i] &&
266 rb->Width == textures[i]->width0 &&
267 rb->Height == textures[i]->height0) {
268 pipe_resource_reference(&textures[i], NULL);
269 continue;
270 }
271
272 u_surface_default_template(&surf_tmpl, textures[i]);
273 ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl);
274 if (ps) {
275 st_set_ws_renderbuffer_surface(rb, ps);
276 pipe_surface_reference(&ps, NULL);
277
278 changed = true;
279
280 width = rb->Width;
281 height = rb->Height;
282 }
283
284 pipe_resource_reference(&textures[i], NULL);
285 }
286
287 if (changed) {
288 ++stfb->stamp;
289 _mesa_resize_framebuffer(st->ctx, stfb, width, height);
290 }
291 }
292
293
294 /**
295 * Update the attachments to validate by looping the existing renderbuffers.
296 */
297 static void
st_framebuffer_update_attachments(struct gl_framebuffer * stfb)298 st_framebuffer_update_attachments(struct gl_framebuffer *stfb)
299 {
300 gl_buffer_index idx;
301
302 stfb->num_statts = 0;
303
304 for (enum st_attachment_type i = 0; i < ST_ATTACHMENT_COUNT; i++)
305 stfb->statts[i] = ST_ATTACHMENT_INVALID;
306
307 for (idx = 0; idx < BUFFER_COUNT; idx++) {
308 struct gl_renderbuffer *rb;
309 enum st_attachment_type statt;
310
311 rb = stfb->Attachment[idx].Renderbuffer;
312 if (!rb || rb->software)
313 continue;
314
315 statt = buffer_index_to_attachment(idx);
316 if (statt != ST_ATTACHMENT_INVALID &&
317 st_visual_have_buffers(stfb->iface->visual, 1 << statt))
318 stfb->statts[stfb->num_statts++] = statt;
319 }
320 stfb->stamp++;
321 }
322
323 /**
324 * Allocate a renderbuffer for an on-screen window (not a user-created
325 * renderbuffer). The window system code determines the format.
326 */
327 static struct gl_renderbuffer *
st_new_renderbuffer_fb(enum pipe_format format,unsigned samples,boolean sw)328 st_new_renderbuffer_fb(enum pipe_format format, unsigned samples, boolean sw)
329 {
330 struct gl_renderbuffer *rb;
331
332 rb = CALLOC_STRUCT(gl_renderbuffer);
333 if (!rb) {
334 _mesa_error(NULL, GL_OUT_OF_MEMORY, "creating renderbuffer");
335 return NULL;
336 }
337
338 _mesa_init_renderbuffer(rb, 0);
339 rb->ClassID = 0x4242; /* just a unique value */
340 rb->NumSamples = samples;
341 rb->NumStorageSamples = samples;
342 rb->Format = st_pipe_format_to_mesa_format(format);
343 rb->_BaseFormat = _mesa_get_format_base_format(rb->Format);
344 rb->software = sw;
345
346 switch (format) {
347 case PIPE_FORMAT_B10G10R10A2_UNORM:
348 case PIPE_FORMAT_R10G10B10A2_UNORM:
349 rb->InternalFormat = GL_RGB10_A2;
350 break;
351 case PIPE_FORMAT_R10G10B10X2_UNORM:
352 case PIPE_FORMAT_B10G10R10X2_UNORM:
353 rb->InternalFormat = GL_RGB10;
354 break;
355 case PIPE_FORMAT_R8G8B8A8_UNORM:
356 case PIPE_FORMAT_B8G8R8A8_UNORM:
357 case PIPE_FORMAT_A8R8G8B8_UNORM:
358 rb->InternalFormat = GL_RGBA8;
359 break;
360 case PIPE_FORMAT_R8G8B8X8_UNORM:
361 case PIPE_FORMAT_B8G8R8X8_UNORM:
362 case PIPE_FORMAT_X8R8G8B8_UNORM:
363 case PIPE_FORMAT_R8G8B8_UNORM:
364 rb->InternalFormat = GL_RGB8;
365 break;
366 case PIPE_FORMAT_R8G8B8A8_SRGB:
367 case PIPE_FORMAT_B8G8R8A8_SRGB:
368 case PIPE_FORMAT_A8R8G8B8_SRGB:
369 rb->InternalFormat = GL_SRGB8_ALPHA8;
370 break;
371 case PIPE_FORMAT_R8G8B8X8_SRGB:
372 case PIPE_FORMAT_B8G8R8X8_SRGB:
373 case PIPE_FORMAT_X8R8G8B8_SRGB:
374 rb->InternalFormat = GL_SRGB8;
375 break;
376 case PIPE_FORMAT_B5G5R5A1_UNORM:
377 rb->InternalFormat = GL_RGB5_A1;
378 break;
379 case PIPE_FORMAT_B4G4R4A4_UNORM:
380 rb->InternalFormat = GL_RGBA4;
381 break;
382 case PIPE_FORMAT_B5G6R5_UNORM:
383 rb->InternalFormat = GL_RGB565;
384 break;
385 case PIPE_FORMAT_Z16_UNORM:
386 rb->InternalFormat = GL_DEPTH_COMPONENT16;
387 break;
388 case PIPE_FORMAT_Z32_UNORM:
389 rb->InternalFormat = GL_DEPTH_COMPONENT32;
390 break;
391 case PIPE_FORMAT_Z24_UNORM_S8_UINT:
392 case PIPE_FORMAT_S8_UINT_Z24_UNORM:
393 rb->InternalFormat = GL_DEPTH24_STENCIL8_EXT;
394 break;
395 case PIPE_FORMAT_Z24X8_UNORM:
396 case PIPE_FORMAT_X8Z24_UNORM:
397 rb->InternalFormat = GL_DEPTH_COMPONENT24;
398 break;
399 case PIPE_FORMAT_S8_UINT:
400 rb->InternalFormat = GL_STENCIL_INDEX8_EXT;
401 break;
402 case PIPE_FORMAT_R16G16B16A16_SNORM:
403 /* accum buffer */
404 rb->InternalFormat = GL_RGBA16_SNORM;
405 break;
406 case PIPE_FORMAT_R16G16B16A16_UNORM:
407 rb->InternalFormat = GL_RGBA16;
408 break;
409 case PIPE_FORMAT_R16G16B16_UNORM:
410 rb->InternalFormat = GL_RGB16;
411 break;
412 case PIPE_FORMAT_R8_UNORM:
413 rb->InternalFormat = GL_R8;
414 break;
415 case PIPE_FORMAT_R8G8_UNORM:
416 rb->InternalFormat = GL_RG8;
417 break;
418 case PIPE_FORMAT_R16_UNORM:
419 rb->InternalFormat = GL_R16;
420 break;
421 case PIPE_FORMAT_R16G16_UNORM:
422 rb->InternalFormat = GL_RG16;
423 break;
424 case PIPE_FORMAT_R32G32B32A32_FLOAT:
425 rb->InternalFormat = GL_RGBA32F;
426 break;
427 case PIPE_FORMAT_R32G32B32X32_FLOAT:
428 case PIPE_FORMAT_R32G32B32_FLOAT:
429 rb->InternalFormat = GL_RGB32F;
430 break;
431 case PIPE_FORMAT_R16G16B16A16_FLOAT:
432 rb->InternalFormat = GL_RGBA16F;
433 break;
434 case PIPE_FORMAT_R16G16B16X16_FLOAT:
435 rb->InternalFormat = GL_RGB16F;
436 break;
437 default:
438 _mesa_problem(NULL,
439 "Unexpected format %s in st_new_renderbuffer_fb",
440 util_format_name(format));
441 FREE(rb);
442 return NULL;
443 }
444
445 rb->surface = NULL;
446
447 return rb;
448 }
449
450 /**
451 * Add a renderbuffer to the framebuffer. The framebuffer is one that
452 * corresponds to a window and is not a user-created FBO.
453 */
454 static bool
st_framebuffer_add_renderbuffer(struct gl_framebuffer * stfb,gl_buffer_index idx,bool prefer_srgb)455 st_framebuffer_add_renderbuffer(struct gl_framebuffer *stfb,
456 gl_buffer_index idx, bool prefer_srgb)
457 {
458 struct gl_renderbuffer *rb;
459 enum pipe_format format;
460 bool sw;
461
462 assert(_mesa_is_winsys_fbo(stfb));
463
464 /* do not distinguish depth/stencil buffers */
465 if (idx == BUFFER_STENCIL)
466 idx = BUFFER_DEPTH;
467
468 switch (idx) {
469 case BUFFER_DEPTH:
470 format = stfb->iface->visual->depth_stencil_format;
471 sw = false;
472 break;
473 case BUFFER_ACCUM:
474 format = stfb->iface->visual->accum_format;
475 sw = true;
476 break;
477 default:
478 format = stfb->iface->visual->color_format;
479 if (prefer_srgb)
480 format = util_format_srgb(format);
481 sw = false;
482 break;
483 }
484
485 if (format == PIPE_FORMAT_NONE)
486 return false;
487
488 rb = st_new_renderbuffer_fb(format, stfb->iface->visual->samples, sw);
489 if (!rb)
490 return false;
491
492 if (idx != BUFFER_DEPTH) {
493 _mesa_attach_and_own_rb(stfb, idx, rb);
494 return true;
495 }
496
497 bool rb_ownership_taken = false;
498 if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0)) {
499 _mesa_attach_and_own_rb(stfb, BUFFER_DEPTH, rb);
500 rb_ownership_taken = true;
501 }
502
503 if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) {
504 if (rb_ownership_taken)
505 _mesa_attach_and_reference_rb(stfb, BUFFER_STENCIL, rb);
506 else
507 _mesa_attach_and_own_rb(stfb, BUFFER_STENCIL, rb);
508 }
509
510 return true;
511 }
512
513
514 /**
515 * Intialize a struct gl_config from a visual.
516 */
517 static void
st_visual_to_context_mode(const struct st_visual * visual,struct gl_config * mode)518 st_visual_to_context_mode(const struct st_visual *visual,
519 struct gl_config *mode)
520 {
521 memset(mode, 0, sizeof(*mode));
522
523 if (st_visual_have_buffers(visual, ST_ATTACHMENT_BACK_LEFT_MASK))
524 mode->doubleBufferMode = GL_TRUE;
525
526 if (st_visual_have_buffers(visual,
527 ST_ATTACHMENT_FRONT_RIGHT_MASK | ST_ATTACHMENT_BACK_RIGHT_MASK))
528 mode->stereoMode = GL_TRUE;
529
530 if (visual->color_format != PIPE_FORMAT_NONE) {
531 mode->redBits =
532 util_format_get_component_bits(visual->color_format,
533 UTIL_FORMAT_COLORSPACE_RGB, 0);
534 mode->greenBits =
535 util_format_get_component_bits(visual->color_format,
536 UTIL_FORMAT_COLORSPACE_RGB, 1);
537 mode->blueBits =
538 util_format_get_component_bits(visual->color_format,
539 UTIL_FORMAT_COLORSPACE_RGB, 2);
540 mode->alphaBits =
541 util_format_get_component_bits(visual->color_format,
542 UTIL_FORMAT_COLORSPACE_RGB, 3);
543
544 mode->rgbBits = mode->redBits +
545 mode->greenBits + mode->blueBits + mode->alphaBits;
546 mode->sRGBCapable = util_format_is_srgb(visual->color_format);
547 }
548
549 if (visual->depth_stencil_format != PIPE_FORMAT_NONE) {
550 mode->depthBits =
551 util_format_get_component_bits(visual->depth_stencil_format,
552 UTIL_FORMAT_COLORSPACE_ZS, 0);
553 mode->stencilBits =
554 util_format_get_component_bits(visual->depth_stencil_format,
555 UTIL_FORMAT_COLORSPACE_ZS, 1);
556 }
557
558 if (visual->accum_format != PIPE_FORMAT_NONE) {
559 mode->accumRedBits =
560 util_format_get_component_bits(visual->accum_format,
561 UTIL_FORMAT_COLORSPACE_RGB, 0);
562 mode->accumGreenBits =
563 util_format_get_component_bits(visual->accum_format,
564 UTIL_FORMAT_COLORSPACE_RGB, 1);
565 mode->accumBlueBits =
566 util_format_get_component_bits(visual->accum_format,
567 UTIL_FORMAT_COLORSPACE_RGB, 2);
568 mode->accumAlphaBits =
569 util_format_get_component_bits(visual->accum_format,
570 UTIL_FORMAT_COLORSPACE_RGB, 3);
571 }
572
573 if (visual->samples > 1) {
574 mode->samples = visual->samples;
575 }
576 }
577
578
579 /**
580 * Create a framebuffer from a manager interface.
581 */
582 static struct gl_framebuffer *
st_framebuffer_create(struct st_context * st,struct st_framebuffer_iface * stfbi)583 st_framebuffer_create(struct st_context *st,
584 struct st_framebuffer_iface *stfbi)
585 {
586 struct gl_framebuffer *stfb;
587 struct gl_config mode;
588 gl_buffer_index idx;
589 bool prefer_srgb = false;
590
591 if (!stfbi)
592 return NULL;
593
594 stfb = CALLOC_STRUCT(gl_framebuffer);
595 if (!stfb)
596 return NULL;
597
598 st_visual_to_context_mode(stfbi->visual, &mode);
599
600 /*
601 * For desktop GL, sRGB framebuffer write is controlled by both the
602 * capability of the framebuffer and GL_FRAMEBUFFER_SRGB. We should
603 * advertise the capability when the pipe driver (and core Mesa) supports
604 * it so that applications can enable sRGB write when they want to.
605 *
606 * This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB. When
607 * the attribute is GLX_TRUE, it tells the st manager to pick a color
608 * format such that util_format_srgb(visual->color_format) can be supported
609 * by the pipe driver. We still need to advertise the capability here.
610 *
611 * For GLES, however, sRGB framebuffer write is initially only controlled
612 * by the capability of the framebuffer, with GL_EXT_sRGB_write_control
613 * control is given back to the applications, but GL_FRAMEBUFFER_SRGB is
614 * still enabled by default since this is the behaviour when
615 * EXT_sRGB_write_control is not available. Since GL_EXT_sRGB_write_control
616 * brings GLES on par with desktop GLs EXT_framebuffer_sRGB, in mesa this
617 * is also expressed by using the same extension flag
618 */
619 if (_mesa_has_EXT_framebuffer_sRGB(st->ctx)) {
620 struct pipe_screen *screen = st->screen;
621 const enum pipe_format srgb_format =
622 util_format_srgb(stfbi->visual->color_format);
623
624 if (srgb_format != PIPE_FORMAT_NONE &&
625 st_pipe_format_to_mesa_format(srgb_format) != MESA_FORMAT_NONE &&
626 screen->is_format_supported(screen, srgb_format,
627 PIPE_TEXTURE_2D, stfbi->visual->samples,
628 stfbi->visual->samples,
629 (PIPE_BIND_DISPLAY_TARGET |
630 PIPE_BIND_RENDER_TARGET))) {
631 mode.sRGBCapable = GL_TRUE;
632 /* Since GL_FRAMEBUFFER_SRGB is enabled by default on GLES we must not
633 * create renderbuffers with an sRGB format derived from the
634 * visual->color_format, but we still want sRGB for desktop GL.
635 */
636 prefer_srgb = _mesa_is_desktop_gl(st->ctx);
637 }
638 }
639
640 _mesa_initialize_window_framebuffer(stfb, &mode);
641
642 stfb->iface = stfbi;
643 stfb->iface_ID = stfbi->ID;
644 stfb->iface_stamp = p_atomic_read(&stfbi->stamp) - 1;
645
646 /* add the color buffer */
647 idx = stfb->_ColorDrawBufferIndexes[0];
648 if (!st_framebuffer_add_renderbuffer(stfb, idx, prefer_srgb)) {
649 FREE(stfb);
650 return NULL;
651 }
652
653 st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH, false);
654 st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM, false);
655
656 stfb->stamp = 0;
657 st_framebuffer_update_attachments(stfb);
658
659 return stfb;
660 }
661
662
663 static uint32_t
st_framebuffer_iface_hash(const void * key)664 st_framebuffer_iface_hash(const void *key)
665 {
666 return (uintptr_t)key;
667 }
668
669
670 static bool
st_framebuffer_iface_equal(const void * a,const void * b)671 st_framebuffer_iface_equal(const void *a, const void *b)
672 {
673 return (struct st_framebuffer_iface *)a == (struct st_framebuffer_iface *)b;
674 }
675
676
677 static bool
st_framebuffer_iface_lookup(struct st_manager * smapi,const struct st_framebuffer_iface * stfbi)678 st_framebuffer_iface_lookup(struct st_manager *smapi,
679 const struct st_framebuffer_iface *stfbi)
680 {
681 struct st_manager_private *smPriv =
682 (struct st_manager_private *)smapi->st_manager_private;
683 struct hash_entry *entry;
684
685 assert(smPriv);
686 assert(smPriv->stfbi_ht);
687
688 simple_mtx_lock(&smPriv->st_mutex);
689 entry = _mesa_hash_table_search(smPriv->stfbi_ht, stfbi);
690 simple_mtx_unlock(&smPriv->st_mutex);
691
692 return entry != NULL;
693 }
694
695
696 static bool
st_framebuffer_iface_insert(struct st_manager * smapi,struct st_framebuffer_iface * stfbi)697 st_framebuffer_iface_insert(struct st_manager *smapi,
698 struct st_framebuffer_iface *stfbi)
699 {
700 struct st_manager_private *smPriv =
701 (struct st_manager_private *)smapi->st_manager_private;
702 struct hash_entry *entry;
703
704 assert(smPriv);
705 assert(smPriv->stfbi_ht);
706
707 simple_mtx_lock(&smPriv->st_mutex);
708 entry = _mesa_hash_table_insert(smPriv->stfbi_ht, stfbi, stfbi);
709 simple_mtx_unlock(&smPriv->st_mutex);
710
711 return entry != NULL;
712 }
713
714
715 static void
st_framebuffer_iface_remove(struct st_manager * smapi,struct st_framebuffer_iface * stfbi)716 st_framebuffer_iface_remove(struct st_manager *smapi,
717 struct st_framebuffer_iface *stfbi)
718 {
719 struct st_manager_private *smPriv =
720 (struct st_manager_private *)smapi->st_manager_private;
721 struct hash_entry *entry;
722
723 if (!smPriv || !smPriv->stfbi_ht)
724 return;
725
726 simple_mtx_lock(&smPriv->st_mutex);
727 entry = _mesa_hash_table_search(smPriv->stfbi_ht, stfbi);
728 if (!entry)
729 goto unlock;
730
731 _mesa_hash_table_remove(smPriv->stfbi_ht, entry);
732
733 unlock:
734 simple_mtx_unlock(&smPriv->st_mutex);
735 }
736
737
738 /**
739 * The framebuffer interface object is no longer valid.
740 * Remove the object from the framebuffer interface hash table.
741 */
742 static void
st_api_destroy_drawable(struct st_api * stapi,struct st_framebuffer_iface * stfbi)743 st_api_destroy_drawable(struct st_api *stapi,
744 struct st_framebuffer_iface *stfbi)
745 {
746 if (!stfbi)
747 return;
748
749 st_framebuffer_iface_remove(stfbi->state_manager, stfbi);
750 }
751
752
753 /**
754 * Purge the winsys buffers list to remove any references to
755 * non-existing framebuffer interface objects.
756 */
757 static void
st_framebuffers_purge(struct st_context * st)758 st_framebuffers_purge(struct st_context *st)
759 {
760 struct st_context_iface *st_iface = &st->iface;
761 struct st_manager *smapi = st_iface->state_manager;
762 struct gl_framebuffer *stfb, *next;
763
764 assert(smapi);
765
766 LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) {
767 struct st_framebuffer_iface *stfbi = stfb->iface;
768
769 assert(stfbi);
770
771 /**
772 * If the corresponding framebuffer interface object no longer exists,
773 * remove the framebuffer object from the context's winsys buffers list,
774 * and unreference the framebuffer object, so its resources can be
775 * deleted.
776 */
777 if (!st_framebuffer_iface_lookup(smapi, stfbi)) {
778 list_del(&stfb->head);
779 _mesa_reference_framebuffer(&stfb, NULL);
780 }
781 }
782 }
783
784
785 static void
st_context_flush(struct st_context_iface * stctxi,unsigned flags,struct pipe_fence_handle ** fence,void (* before_flush_cb)(void *),void * args)786 st_context_flush(struct st_context_iface *stctxi, unsigned flags,
787 struct pipe_fence_handle **fence,
788 void (*before_flush_cb) (void*),
789 void* args)
790 {
791 struct st_context *st = (struct st_context *) stctxi;
792 unsigned pipe_flags = 0;
793
794 if (flags & ST_FLUSH_END_OF_FRAME)
795 pipe_flags |= PIPE_FLUSH_END_OF_FRAME;
796 if (flags & ST_FLUSH_FENCE_FD)
797 pipe_flags |= PIPE_FLUSH_FENCE_FD;
798
799 /* We can do these in any order because FLUSH_VERTICES will also flush
800 * the bitmap cache if there are any unflushed vertices.
801 */
802 st_flush_bitmap_cache(st);
803 FLUSH_VERTICES(st->ctx, 0, 0);
804
805 /* Notify the caller that we're ready to flush */
806 if (before_flush_cb)
807 before_flush_cb(args);
808 st_flush(st, fence, pipe_flags);
809
810 if ((flags & ST_FLUSH_WAIT) && fence && *fence) {
811 st->screen->fence_finish(st->screen, NULL, *fence,
812 PIPE_TIMEOUT_INFINITE);
813 st->screen->fence_reference(st->screen, fence, NULL);
814 }
815
816 if (flags & ST_FLUSH_FRONT)
817 st_manager_flush_frontbuffer(st);
818
819 /* DRI3 changes the framebuffer after SwapBuffers, but we need to invoke
820 * st_manager_validate_framebuffers to notice that.
821 *
822 * Set gfx_shaders_may_be_dirty to invoke st_validate_state in the next
823 * draw call, which will invoke st_manager_validate_framebuffers, but it
824 * won't dirty states if there is no change.
825 */
826 if (flags & ST_FLUSH_END_OF_FRAME)
827 st->gfx_shaders_may_be_dirty = true;
828 }
829
830 static bool
st_context_teximage(struct st_context_iface * stctxi,enum st_texture_type tex_type,int level,enum pipe_format pipe_format,struct pipe_resource * tex,bool mipmap)831 st_context_teximage(struct st_context_iface *stctxi,
832 enum st_texture_type tex_type,
833 int level, enum pipe_format pipe_format,
834 struct pipe_resource *tex, bool mipmap)
835 {
836 struct st_context *st = (struct st_context *) stctxi;
837 struct gl_context *ctx = st->ctx;
838 struct gl_texture_object *texObj;
839 struct gl_texture_image *texImage;
840 GLenum internalFormat;
841 GLuint width, height, depth;
842 GLenum target;
843
844 switch (tex_type) {
845 case ST_TEXTURE_1D:
846 target = GL_TEXTURE_1D;
847 break;
848 case ST_TEXTURE_2D:
849 target = GL_TEXTURE_2D;
850 break;
851 case ST_TEXTURE_3D:
852 target = GL_TEXTURE_3D;
853 break;
854 case ST_TEXTURE_RECT:
855 target = GL_TEXTURE_RECTANGLE_ARB;
856 break;
857 default:
858 return FALSE;
859 }
860
861 texObj = _mesa_get_current_tex_object(ctx, target);
862
863 _mesa_lock_texture(ctx, texObj);
864
865 /* switch to surface based */
866 if (!texObj->surface_based) {
867 _mesa_clear_texture_object(ctx, texObj, NULL);
868 texObj->surface_based = GL_TRUE;
869 }
870
871 texImage = _mesa_get_tex_image(ctx, texObj, target, level);
872 if (tex) {
873 mesa_format texFormat = st_pipe_format_to_mesa_format(pipe_format);
874
875 if (util_format_has_alpha(tex->format))
876 internalFormat = GL_RGBA;
877 else
878 internalFormat = GL_RGB;
879
880 _mesa_init_teximage_fields(ctx, texImage,
881 tex->width0, tex->height0, 1, 0,
882 internalFormat, texFormat);
883
884 width = tex->width0;
885 height = tex->height0;
886 depth = tex->depth0;
887
888 /* grow the image size until we hit level = 0 */
889 while (level > 0) {
890 if (width != 1)
891 width <<= 1;
892 if (height != 1)
893 height <<= 1;
894 if (depth != 1)
895 depth <<= 1;
896 level--;
897 }
898 }
899 else {
900 _mesa_clear_texture_image(ctx, texImage);
901 width = height = depth = 0;
902 }
903
904 pipe_resource_reference(&texObj->pt, tex);
905 st_texture_release_all_sampler_views(st, texObj);
906 pipe_resource_reference(&texImage->pt, tex);
907 texObj->surface_format = pipe_format;
908
909 texObj->needs_validation = true;
910
911 _mesa_dirty_texobj(ctx, texObj);
912 _mesa_unlock_texture(ctx, texObj);
913
914 return true;
915 }
916
917
918 static void
st_context_copy(struct st_context_iface * stctxi,struct st_context_iface * stsrci,unsigned mask)919 st_context_copy(struct st_context_iface *stctxi,
920 struct st_context_iface *stsrci, unsigned mask)
921 {
922 struct st_context *st = (struct st_context *) stctxi;
923 struct st_context *src = (struct st_context *) stsrci;
924
925 _mesa_copy_context(src->ctx, st->ctx, mask);
926 }
927
928
929 static bool
st_context_share(struct st_context_iface * stctxi,struct st_context_iface * stsrci)930 st_context_share(struct st_context_iface *stctxi,
931 struct st_context_iface *stsrci)
932 {
933 struct st_context *st = (struct st_context *) stctxi;
934 struct st_context *src = (struct st_context *) stsrci;
935
936 return _mesa_share_state(st->ctx, src->ctx);
937 }
938
939
940 static void
st_context_destroy(struct st_context_iface * stctxi)941 st_context_destroy(struct st_context_iface *stctxi)
942 {
943 struct st_context *st = (struct st_context *) stctxi;
944 st_destroy_context(st);
945 }
946
947
948 static void
st_start_thread(struct st_context_iface * stctxi)949 st_start_thread(struct st_context_iface *stctxi)
950 {
951 struct st_context *st = (struct st_context *) stctxi;
952
953 _mesa_glthread_init(st->ctx);
954 }
955
956
957 static void
st_thread_finish(struct st_context_iface * stctxi)958 st_thread_finish(struct st_context_iface *stctxi)
959 {
960 struct st_context *st = (struct st_context *) stctxi;
961
962 _mesa_glthread_finish(st->ctx);
963 }
964
965
966 static void
st_context_invalidate_state(struct st_context_iface * stctxi,unsigned flags)967 st_context_invalidate_state(struct st_context_iface *stctxi,
968 unsigned flags)
969 {
970 struct st_context *st = (struct st_context *) stctxi;
971
972 if (flags & ST_INVALIDATE_FS_SAMPLER_VIEWS)
973 st->dirty |= ST_NEW_FS_SAMPLER_VIEWS;
974 if (flags & ST_INVALIDATE_FS_CONSTBUF0)
975 st->dirty |= ST_NEW_FS_CONSTANTS;
976 if (flags & ST_INVALIDATE_VS_CONSTBUF0)
977 st->dirty |= ST_NEW_VS_CONSTANTS;
978 if (flags & ST_INVALIDATE_VERTEX_BUFFERS) {
979 st->ctx->Array.NewVertexElements = true;
980 st->dirty |= ST_NEW_VERTEX_ARRAYS;
981 }
982 }
983
984
985 static void
st_manager_destroy(struct st_manager * smapi)986 st_manager_destroy(struct st_manager *smapi)
987 {
988 struct st_manager_private *smPriv = smapi->st_manager_private;
989
990 if (smPriv && smPriv->stfbi_ht) {
991 _mesa_hash_table_destroy(smPriv->stfbi_ht, NULL);
992 simple_mtx_destroy(&smPriv->st_mutex);
993 FREE(smPriv);
994 smapi->st_manager_private = NULL;
995 }
996 }
997
998
999 static struct st_context_iface *
st_api_create_context(struct st_api * stapi,struct st_manager * smapi,const struct st_context_attribs * attribs,enum st_context_error * error,struct st_context_iface * shared_stctxi)1000 st_api_create_context(struct st_api *stapi, struct st_manager *smapi,
1001 const struct st_context_attribs *attribs,
1002 enum st_context_error *error,
1003 struct st_context_iface *shared_stctxi)
1004 {
1005 struct st_context *shared_ctx = (struct st_context *) shared_stctxi;
1006 struct st_context *st;
1007 struct pipe_context *pipe;
1008 struct gl_config mode, *mode_ptr = &mode;
1009 gl_api api;
1010 bool no_error = false;
1011 unsigned ctx_flags = PIPE_CONTEXT_PREFER_THREADED;
1012
1013 if (!(stapi->profile_mask & (1 << attribs->profile)))
1014 return NULL;
1015
1016 switch (attribs->profile) {
1017 case ST_PROFILE_DEFAULT:
1018 api = API_OPENGL_COMPAT;
1019 break;
1020 case ST_PROFILE_OPENGL_ES1:
1021 api = API_OPENGLES;
1022 break;
1023 case ST_PROFILE_OPENGL_ES2:
1024 api = API_OPENGLES2;
1025 break;
1026 case ST_PROFILE_OPENGL_CORE:
1027 api = API_OPENGL_CORE;
1028 break;
1029 default:
1030 *error = ST_CONTEXT_ERROR_BAD_API;
1031 return NULL;
1032 }
1033
1034 _mesa_initialize(attribs->options.mesa_extension_override);
1035
1036 /* Create a hash table for the framebuffer interface objects
1037 * if it has not been created for this st manager.
1038 */
1039 if (smapi->st_manager_private == NULL) {
1040 struct st_manager_private *smPriv;
1041
1042 smPriv = CALLOC_STRUCT(st_manager_private);
1043 simple_mtx_init(&smPriv->st_mutex, mtx_plain);
1044 smPriv->stfbi_ht = _mesa_hash_table_create(NULL,
1045 st_framebuffer_iface_hash,
1046 st_framebuffer_iface_equal);
1047 smapi->st_manager_private = smPriv;
1048 smapi->destroy = st_manager_destroy;
1049 }
1050
1051 if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS)
1052 ctx_flags |= PIPE_CONTEXT_ROBUST_BUFFER_ACCESS;
1053
1054 if (attribs->flags & ST_CONTEXT_FLAG_NO_ERROR)
1055 no_error = true;
1056
1057 if (attribs->flags & ST_CONTEXT_FLAG_LOW_PRIORITY)
1058 ctx_flags |= PIPE_CONTEXT_LOW_PRIORITY;
1059 else if (attribs->flags & ST_CONTEXT_FLAG_HIGH_PRIORITY)
1060 ctx_flags |= PIPE_CONTEXT_HIGH_PRIORITY;
1061
1062 if (attribs->flags & ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED)
1063 ctx_flags |= PIPE_CONTEXT_LOSE_CONTEXT_ON_RESET;
1064
1065 pipe = smapi->screen->context_create(smapi->screen, NULL, ctx_flags);
1066 if (!pipe) {
1067 *error = ST_CONTEXT_ERROR_NO_MEMORY;
1068 return NULL;
1069 }
1070
1071 st_visual_to_context_mode(&attribs->visual, &mode);
1072 if (attribs->visual.color_format == PIPE_FORMAT_NONE)
1073 mode_ptr = NULL;
1074 st = st_create_context(api, pipe, mode_ptr, shared_ctx,
1075 &attribs->options, no_error,
1076 !!smapi->validate_egl_image);
1077 if (!st) {
1078 *error = ST_CONTEXT_ERROR_NO_MEMORY;
1079 pipe->destroy(pipe);
1080 return NULL;
1081 }
1082
1083 if (attribs->flags & ST_CONTEXT_FLAG_DEBUG) {
1084 if (!_mesa_set_debug_state_int(st->ctx, GL_DEBUG_OUTPUT, GL_TRUE)) {
1085 *error = ST_CONTEXT_ERROR_NO_MEMORY;
1086 return NULL;
1087 }
1088
1089 st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT;
1090 }
1091
1092 if (st->ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT) {
1093 _mesa_update_debug_callback(st->ctx);
1094 }
1095
1096 if (attribs->flags & ST_CONTEXT_FLAG_FORWARD_COMPATIBLE)
1097 st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT;
1098 if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS) {
1099 st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB;
1100 st->ctx->Const.RobustAccess = GL_TRUE;
1101 }
1102 if (attribs->flags & ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED) {
1103 st->ctx->Const.ResetStrategy = GL_LOSE_CONTEXT_ON_RESET_ARB;
1104 st_install_device_reset_callback(st);
1105 }
1106
1107 if (attribs->flags & ST_CONTEXT_FLAG_RELEASE_NONE)
1108 st->ctx->Const.ContextReleaseBehavior = GL_NONE;
1109
1110 /* need to perform version check */
1111 if (attribs->major > 1 || attribs->minor > 0) {
1112 /* Is the actual version less than the requested version?
1113 */
1114 if (st->ctx->Version < attribs->major * 10U + attribs->minor) {
1115 *error = ST_CONTEXT_ERROR_BAD_VERSION;
1116 st_destroy_context(st);
1117 return NULL;
1118 }
1119 }
1120
1121 st->can_scissor_clear = !!st->screen->get_param(st->screen, PIPE_CAP_CLEAR_SCISSORED);
1122
1123 st->ctx->invalidate_on_gl_viewport =
1124 smapi->get_param(smapi, ST_MANAGER_BROKEN_INVALIDATE);
1125
1126 st->iface.destroy = st_context_destroy;
1127 st->iface.flush = st_context_flush;
1128 st->iface.teximage = st_context_teximage;
1129 st->iface.copy = st_context_copy;
1130 st->iface.share = st_context_share;
1131 st->iface.start_thread = st_start_thread;
1132 st->iface.thread_finish = st_thread_finish;
1133 st->iface.invalidate_state = st_context_invalidate_state;
1134 st->iface.st_context_private = (void *) smapi;
1135 st->iface.cso_context = st->cso_context;
1136 st->iface.pipe = st->pipe;
1137 st->iface.state_manager = smapi;
1138
1139 if (st->ctx->IntelBlackholeRender &&
1140 st->screen->get_param(st->screen, PIPE_CAP_FRONTEND_NOOP))
1141 st->pipe->set_frontend_noop(st->pipe, st->ctx->IntelBlackholeRender);
1142
1143 *error = ST_CONTEXT_SUCCESS;
1144 return &st->iface;
1145 }
1146
1147
1148 static struct st_context_iface *
st_api_get_current(struct st_api * stapi)1149 st_api_get_current(struct st_api *stapi)
1150 {
1151 GET_CURRENT_CONTEXT(ctx);
1152 struct st_context *st = ctx ? ctx->st : NULL;
1153
1154 return st ? &st->iface : NULL;
1155 }
1156
1157
1158 static struct gl_framebuffer *
st_framebuffer_reuse_or_create(struct st_context * st,struct gl_framebuffer * fb,struct st_framebuffer_iface * stfbi)1159 st_framebuffer_reuse_or_create(struct st_context *st,
1160 struct gl_framebuffer *fb,
1161 struct st_framebuffer_iface *stfbi)
1162 {
1163 struct gl_framebuffer *cur = NULL, *stfb = NULL;
1164
1165 if (!stfbi)
1166 return NULL;
1167
1168 /* Check if there is already a framebuffer object for the specified
1169 * framebuffer interface in this context. If there is one, use it.
1170 */
1171 LIST_FOR_EACH_ENTRY(cur, &st->winsys_buffers, head) {
1172 if (cur->iface_ID == stfbi->ID) {
1173 _mesa_reference_framebuffer(&stfb, cur);
1174 break;
1175 }
1176 }
1177
1178 /* If there is not already a framebuffer object, create one */
1179 if (stfb == NULL) {
1180 cur = st_framebuffer_create(st, stfbi);
1181
1182 if (cur) {
1183 /* add the referenced framebuffer interface object to
1184 * the framebuffer interface object hash table.
1185 */
1186 if (!st_framebuffer_iface_insert(stfbi->state_manager, stfbi)) {
1187 _mesa_reference_framebuffer(&cur, NULL);
1188 return NULL;
1189 }
1190
1191 /* add to the context's winsys buffers list */
1192 list_add(&cur->head, &st->winsys_buffers);
1193
1194 _mesa_reference_framebuffer(&stfb, cur);
1195 }
1196 }
1197
1198 return stfb;
1199 }
1200
1201
1202 static bool
st_api_make_current(struct st_api * stapi,struct st_context_iface * stctxi,struct st_framebuffer_iface * stdrawi,struct st_framebuffer_iface * streadi)1203 st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
1204 struct st_framebuffer_iface *stdrawi,
1205 struct st_framebuffer_iface *streadi)
1206 {
1207 struct st_context *st = (struct st_context *) stctxi;
1208 struct gl_framebuffer *stdraw, *stread;
1209 bool ret;
1210
1211 if (st) {
1212 /* reuse or create the draw fb */
1213 stdraw = st_framebuffer_reuse_or_create(st,
1214 st->ctx->WinSysDrawBuffer, stdrawi);
1215 if (streadi != stdrawi) {
1216 /* do the same for the read fb */
1217 stread = st_framebuffer_reuse_or_create(st,
1218 st->ctx->WinSysReadBuffer, streadi);
1219 }
1220 else {
1221 stread = NULL;
1222 /* reuse the draw fb for the read fb */
1223 if (stdraw)
1224 _mesa_reference_framebuffer(&stread, stdraw);
1225 }
1226
1227 /* If framebuffers were asked for, we'd better have allocated them */
1228 if ((stdrawi && !stdraw) || (streadi && !stread))
1229 return false;
1230
1231 if (stdraw && stread) {
1232 st_framebuffer_validate(stdraw, st);
1233 if (stread != stdraw)
1234 st_framebuffer_validate(stread, st);
1235
1236 ret = _mesa_make_current(st->ctx, stdraw, stread);
1237
1238 st->draw_stamp = stdraw->stamp - 1;
1239 st->read_stamp = stread->stamp - 1;
1240 st_context_validate(st, stdraw, stread);
1241 }
1242 else {
1243 struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer();
1244 ret = _mesa_make_current(st->ctx, incomplete, incomplete);
1245 }
1246
1247 _mesa_reference_framebuffer(&stdraw, NULL);
1248 _mesa_reference_framebuffer(&stread, NULL);
1249
1250 /* Purge the context's winsys_buffers list in case any
1251 * of the referenced drawables no longer exist.
1252 */
1253 st_framebuffers_purge(st);
1254 }
1255 else {
1256 GET_CURRENT_CONTEXT(ctx);
1257
1258 if (ctx) {
1259 /* Before releasing the context, release its associated
1260 * winsys buffers first. Then purge the context's winsys buffers list
1261 * to free the resources of any winsys buffers that no longer have
1262 * an existing drawable.
1263 */
1264 ret = _mesa_make_current(ctx, NULL, NULL);
1265 st_framebuffers_purge(ctx->st);
1266 }
1267
1268 ret = _mesa_make_current(NULL, NULL, NULL);
1269 }
1270
1271 return ret;
1272 }
1273
1274
1275 static void
st_api_destroy(struct st_api * stapi)1276 st_api_destroy(struct st_api *stapi)
1277 {
1278 }
1279
1280
1281 /**
1282 * Flush the front buffer if the current context renders to the front buffer.
1283 */
1284 void
st_manager_flush_frontbuffer(struct st_context * st)1285 st_manager_flush_frontbuffer(struct st_context *st)
1286 {
1287 struct gl_framebuffer *stfb = st_ws_framebuffer(st->ctx->DrawBuffer);
1288 struct gl_renderbuffer *rb = NULL;
1289
1290 if (!stfb)
1291 return;
1292
1293 /* If the context uses a doublebuffered visual, but the buffer is
1294 * single-buffered, guess that it's a pbuffer, which doesn't need
1295 * flushing.
1296 */
1297 if (st->ctx->Visual.doubleBufferMode &&
1298 !stfb->Visual.doubleBufferMode)
1299 return;
1300
1301 /* Check front buffer used at the GL API level. */
1302 enum st_attachment_type statt = ST_ATTACHMENT_FRONT_LEFT;
1303 rb = stfb->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
1304 if (!rb) {
1305 /* Check back buffer redirected by EGL_KHR_mutable_render_buffer. */
1306 statt = ST_ATTACHMENT_BACK_LEFT;
1307 rb = stfb->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
1308 }
1309
1310 /* Do we have a front color buffer and has it been drawn to since last
1311 * frontbuffer flush?
1312 */
1313 if (rb && rb->defined &&
1314 stfb->iface->flush_front(&st->iface, stfb->iface, statt)) {
1315 rb->defined = GL_FALSE;
1316
1317 /* Trigger an update of rb->defined on next draw */
1318 st->dirty |= ST_NEW_FB_STATE;
1319 }
1320 }
1321
1322
1323 /**
1324 * Re-validate the framebuffers.
1325 */
1326 void
st_manager_validate_framebuffers(struct st_context * st)1327 st_manager_validate_framebuffers(struct st_context *st)
1328 {
1329 struct gl_framebuffer *stdraw = st_ws_framebuffer(st->ctx->DrawBuffer);
1330 struct gl_framebuffer *stread = st_ws_framebuffer(st->ctx->ReadBuffer);
1331
1332 if (stdraw)
1333 st_framebuffer_validate(stdraw, st);
1334 if (stread && stread != stdraw)
1335 st_framebuffer_validate(stread, st);
1336
1337 st_context_validate(st, stdraw, stread);
1338 }
1339
1340
1341 /**
1342 * Flush any outstanding swapbuffers on the current draw framebuffer.
1343 */
1344 void
st_manager_flush_swapbuffers(void)1345 st_manager_flush_swapbuffers(void)
1346 {
1347 GET_CURRENT_CONTEXT(ctx);
1348 struct st_context *st = (ctx) ? ctx->st : NULL;
1349 struct gl_framebuffer *stfb;
1350
1351 if (!st)
1352 return;
1353
1354 stfb = st_ws_framebuffer(ctx->DrawBuffer);
1355 if (!stfb || !stfb->iface->flush_swapbuffers)
1356 return;
1357
1358 stfb->iface->flush_swapbuffers(&st->iface, stfb->iface);
1359 }
1360
1361
1362 /**
1363 * Add a color renderbuffer on demand. The FBO must correspond to a window,
1364 * not a user-created FBO.
1365 */
1366 bool
st_manager_add_color_renderbuffer(struct gl_context * ctx,struct gl_framebuffer * fb,gl_buffer_index idx)1367 st_manager_add_color_renderbuffer(struct gl_context *ctx,
1368 struct gl_framebuffer *fb,
1369 gl_buffer_index idx)
1370 {
1371 struct gl_framebuffer *stfb = st_ws_framebuffer(fb);
1372
1373 /* FBO */
1374 if (!stfb)
1375 return false;
1376
1377 assert(_mesa_is_winsys_fbo(fb));
1378
1379 if (stfb->Attachment[idx].Renderbuffer)
1380 return true;
1381
1382 switch (idx) {
1383 case BUFFER_FRONT_LEFT:
1384 case BUFFER_BACK_LEFT:
1385 case BUFFER_FRONT_RIGHT:
1386 case BUFFER_BACK_RIGHT:
1387 break;
1388 default:
1389 return false;
1390 }
1391
1392 if (!st_framebuffer_add_renderbuffer(stfb, idx,
1393 stfb->Visual.sRGBCapable))
1394 return false;
1395
1396 st_framebuffer_update_attachments(stfb);
1397
1398 /*
1399 * Force a call to the frontend manager to validate the
1400 * new renderbuffer. It might be that there is a window system
1401 * renderbuffer available.
1402 */
1403 if (stfb->iface)
1404 stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1;
1405
1406 st_invalidate_buffers(st_context(ctx));
1407
1408 return true;
1409 }
1410
1411
1412 static unsigned
get_version(struct pipe_screen * screen,struct st_config_options * options,gl_api api)1413 get_version(struct pipe_screen *screen,
1414 struct st_config_options *options, gl_api api)
1415 {
1416 struct gl_constants consts = {0};
1417 struct gl_extensions extensions = {0};
1418 GLuint version;
1419
1420 if (_mesa_override_gl_version_contextless(&consts, &api, &version)) {
1421 return version;
1422 }
1423
1424 _mesa_init_constants(&consts, api);
1425 _mesa_init_extensions(&extensions);
1426
1427 st_init_limits(screen, &consts, &extensions);
1428 st_init_extensions(screen, &consts, &extensions, options, api);
1429 version = _mesa_get_version(&extensions, &consts, api);
1430 free(consts.SpirVExtensions);
1431 return version;
1432 }
1433
1434
1435 static void
st_api_query_versions(struct st_api * stapi,struct st_manager * sm,struct st_config_options * options,int * gl_core_version,int * gl_compat_version,int * gl_es1_version,int * gl_es2_version)1436 st_api_query_versions(struct st_api *stapi, struct st_manager *sm,
1437 struct st_config_options *options,
1438 int *gl_core_version,
1439 int *gl_compat_version,
1440 int *gl_es1_version,
1441 int *gl_es2_version)
1442 {
1443 *gl_core_version = get_version(sm->screen, options, API_OPENGL_CORE);
1444 *gl_compat_version = get_version(sm->screen, options, API_OPENGL_COMPAT);
1445 *gl_es1_version = get_version(sm->screen, options, API_OPENGLES);
1446 *gl_es2_version = get_version(sm->screen, options, API_OPENGLES2);
1447 }
1448
1449
1450 static const struct st_api st_gl_api = {
1451 .name = "Mesa " PACKAGE_VERSION,
1452 .api = ST_API_OPENGL,
1453 .profile_mask = ST_PROFILE_DEFAULT_MASK |
1454 ST_PROFILE_OPENGL_CORE_MASK |
1455 ST_PROFILE_OPENGL_ES1_MASK |
1456 ST_PROFILE_OPENGL_ES2_MASK |
1457 0,
1458 .feature_mask = ST_API_FEATURE_MS_VISUALS_MASK,
1459 .destroy = st_api_destroy,
1460 .query_versions = st_api_query_versions,
1461 .create_context = st_api_create_context,
1462 .make_current = st_api_make_current,
1463 .get_current = st_api_get_current,
1464 .destroy_drawable = st_api_destroy_drawable,
1465 };
1466
1467
1468 struct st_api *
st_gl_api_create(void)1469 st_gl_api_create(void)
1470 {
1471 return (struct st_api *) &st_gl_api;
1472 }
1473
1474 void
st_manager_invalidate_drawables(struct gl_context * ctx)1475 st_manager_invalidate_drawables(struct gl_context *ctx)
1476 {
1477 struct gl_framebuffer *stdraw;
1478 struct gl_framebuffer *stread;
1479
1480 /*
1481 * Normally we'd want the frontend manager to mark the drawables
1482 * invalid only when needed. This will force the frontend manager
1483 * to revalidate the drawable, rather than just update the context with
1484 * the latest cached drawable info.
1485 */
1486
1487 stdraw = st_ws_framebuffer(ctx->DrawBuffer);
1488 stread = st_ws_framebuffer(ctx->ReadBuffer);
1489
1490 if (stdraw)
1491 stdraw->iface_stamp = p_atomic_read(&stdraw->iface->stamp) - 1;
1492 if (stread && stread != stdraw)
1493 stread->iface_stamp = p_atomic_read(&stread->iface->stamp) - 1;
1494 }
1495