2 * Mesa 3-D graphics library
4 * Copyright (C) 2010 LunarG Inc.
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:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
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.
25 * Chia-I Wu <olv@lunarg.com>
28 #include "main/mtypes.h"
29 #include "main/extensions.h"
30 #include "main/context.h"
31 #include "main/texobj.h"
32 #include "main/teximage.h"
33 #include "main/texstate.h"
34 #include "main/errors.h"
35 #include "main/framebuffer.h"
36 #include "main/fbobject.h"
37 #include "main/renderbuffer.h"
38 #include "main/version.h"
39 #include "st_texture.h"
41 #include "st_context.h"
42 #include "st_extensions.h"
43 #include "st_format.h"
44 #include "st_cb_fbo.h"
45 #include "st_cb_flush.h"
46 #include "st_manager.h"
48 #include "state_tracker/st_gl_api.h"
50 #include "pipe/p_context.h"
51 #include "pipe/p_screen.h"
52 #include "util/u_format.h"
53 #include "util/u_pointer.h"
54 #include "util/u_inlines.h"
55 #include "util/u_atomic.h"
56 #include "util/u_surface.h"
59 * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
60 * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
61 * We'll only return non-null for window system framebuffers.
62 * Note that this function may fail.
64 static inline struct st_framebuffer
*
65 st_ws_framebuffer(struct gl_framebuffer
*fb
)
67 /* FBO cannot be casted. See st_new_framebuffer */
68 if (fb
&& _mesa_is_winsys_fbo(fb
))
69 return (struct st_framebuffer
*) fb
;
74 * Map an attachment to a buffer index.
76 static inline gl_buffer_index
77 attachment_to_buffer_index(enum st_attachment_type statt
)
79 gl_buffer_index index
;
82 case ST_ATTACHMENT_FRONT_LEFT
:
83 index
= BUFFER_FRONT_LEFT
;
85 case ST_ATTACHMENT_BACK_LEFT
:
86 index
= BUFFER_BACK_LEFT
;
88 case ST_ATTACHMENT_FRONT_RIGHT
:
89 index
= BUFFER_FRONT_RIGHT
;
91 case ST_ATTACHMENT_BACK_RIGHT
:
92 index
= BUFFER_BACK_RIGHT
;
94 case ST_ATTACHMENT_DEPTH_STENCIL
:
97 case ST_ATTACHMENT_ACCUM
:
100 case ST_ATTACHMENT_SAMPLE
:
102 index
= BUFFER_COUNT
;
110 * Map a buffer index to an attachment.
112 static inline enum st_attachment_type
113 buffer_index_to_attachment(gl_buffer_index index
)
115 enum st_attachment_type statt
;
118 case BUFFER_FRONT_LEFT
:
119 statt
= ST_ATTACHMENT_FRONT_LEFT
;
121 case BUFFER_BACK_LEFT
:
122 statt
= ST_ATTACHMENT_BACK_LEFT
;
124 case BUFFER_FRONT_RIGHT
:
125 statt
= ST_ATTACHMENT_FRONT_RIGHT
;
127 case BUFFER_BACK_RIGHT
:
128 statt
= ST_ATTACHMENT_BACK_RIGHT
;
131 statt
= ST_ATTACHMENT_DEPTH_STENCIL
;
134 statt
= ST_ATTACHMENT_ACCUM
;
137 statt
= ST_ATTACHMENT_INVALID
;
145 * Make sure a context picks up the latest cached state of the
146 * drawables it binds to.
149 st_context_validate(struct st_context
*st
,
150 struct st_framebuffer
*stdraw
,
151 struct st_framebuffer
*stread
)
153 if (stdraw
&& stdraw
->stamp
!= st
->draw_stamp
) {
154 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
155 _mesa_resize_framebuffer(st
->ctx
, &stdraw
->Base
,
157 stdraw
->Base
.Height
);
158 st
->draw_stamp
= stdraw
->stamp
;
161 if (stread
&& stread
->stamp
!= st
->read_stamp
) {
162 if (stread
!= stdraw
) {
163 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
164 _mesa_resize_framebuffer(st
->ctx
, &stread
->Base
,
166 stread
->Base
.Height
);
168 st
->read_stamp
= stread
->stamp
;
173 * Validate a framebuffer to make sure up-to-date pipe_textures are used.
174 * The context is only used for creating pipe surfaces and for calling
175 * _mesa_resize_framebuffer().
176 * (That should probably be rethought, since those surfaces become
177 * drawable state, not context state, and can be freed by another pipe
181 st_framebuffer_validate(struct st_framebuffer
*stfb
,
182 struct st_context
*st
)
184 struct pipe_resource
*textures
[ST_ATTACHMENT_COUNT
];
187 boolean changed
= FALSE
;
190 /* Check for incomplete framebuffers (e.g. EGL_KHR_surfaceless_context) */
194 new_stamp
= p_atomic_read(&stfb
->iface
->stamp
);
195 if (stfb
->iface_stamp
== new_stamp
)
198 /* validate the fb */
200 if (!stfb
->iface
->validate(&st
->iface
, stfb
->iface
, stfb
->statts
,
201 stfb
->num_statts
, textures
))
204 stfb
->iface_stamp
= new_stamp
;
205 new_stamp
= p_atomic_read(&stfb
->iface
->stamp
);
206 } while(stfb
->iface_stamp
!= new_stamp
);
208 width
= stfb
->Base
.Width
;
209 height
= stfb
->Base
.Height
;
211 for (i
= 0; i
< stfb
->num_statts
; i
++) {
212 struct st_renderbuffer
*strb
;
213 struct pipe_surface
*ps
, surf_tmpl
;
219 idx
= attachment_to_buffer_index(stfb
->statts
[i
]);
220 if (idx
>= BUFFER_COUNT
) {
221 pipe_resource_reference(&textures
[i
], NULL
);
225 strb
= st_renderbuffer(stfb
->Base
.Attachment
[idx
].Renderbuffer
);
227 if (strb
->texture
== textures
[i
]) {
228 pipe_resource_reference(&textures
[i
], NULL
);
232 u_surface_default_template(&surf_tmpl
, textures
[i
]);
233 ps
= st
->pipe
->create_surface(st
->pipe
, textures
[i
], &surf_tmpl
);
235 pipe_surface_reference(&strb
->surface
, ps
);
236 pipe_resource_reference(&strb
->texture
, ps
->texture
);
237 /* ownership transfered */
238 pipe_surface_reference(&ps
, NULL
);
242 strb
->Base
.Width
= strb
->surface
->width
;
243 strb
->Base
.Height
= strb
->surface
->height
;
245 width
= strb
->Base
.Width
;
246 height
= strb
->Base
.Height
;
249 pipe_resource_reference(&textures
[i
], NULL
);
254 _mesa_resize_framebuffer(st
->ctx
, &stfb
->Base
, width
, height
);
259 * Update the attachments to validate by looping the existing renderbuffers.
262 st_framebuffer_update_attachments(struct st_framebuffer
*stfb
)
266 stfb
->num_statts
= 0;
267 for (idx
= 0; idx
< BUFFER_COUNT
; idx
++) {
268 struct st_renderbuffer
*strb
;
269 enum st_attachment_type statt
;
271 strb
= st_renderbuffer(stfb
->Base
.Attachment
[idx
].Renderbuffer
);
272 if (!strb
|| strb
->software
)
275 statt
= buffer_index_to_attachment(idx
);
276 if (statt
!= ST_ATTACHMENT_INVALID
&&
277 st_visual_have_buffers(stfb
->iface
->visual
, 1 << statt
))
278 stfb
->statts
[stfb
->num_statts
++] = statt
;
284 * Add a renderbuffer to the framebuffer.
287 st_framebuffer_add_renderbuffer(struct st_framebuffer
*stfb
,
290 struct gl_renderbuffer
*rb
;
291 enum pipe_format format
;
297 /* do not distinguish depth/stencil buffers */
298 if (idx
== BUFFER_STENCIL
)
303 format
= stfb
->iface
->visual
->depth_stencil_format
;
307 format
= stfb
->iface
->visual
->accum_format
;
311 format
= stfb
->iface
->visual
->color_format
;
312 if (stfb
->Base
.Visual
.sRGBCapable
)
313 format
= util_format_srgb(format
);
318 if (format
== PIPE_FORMAT_NONE
)
321 rb
= st_new_renderbuffer_fb(format
, stfb
->iface
->visual
->samples
, sw
);
325 if (idx
!= BUFFER_DEPTH
) {
326 _mesa_add_renderbuffer(&stfb
->Base
, idx
, rb
);
329 if (util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0))
330 _mesa_add_renderbuffer(&stfb
->Base
, BUFFER_DEPTH
, rb
);
331 if (util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1))
332 _mesa_add_renderbuffer(&stfb
->Base
, BUFFER_STENCIL
, rb
);
339 * Intialize a struct gl_config from a visual.
342 st_visual_to_context_mode(const struct st_visual
*visual
,
343 struct gl_config
*mode
)
345 memset(mode
, 0, sizeof(*mode
));
347 if (st_visual_have_buffers(visual
, ST_ATTACHMENT_BACK_LEFT_MASK
))
348 mode
->doubleBufferMode
= GL_TRUE
;
349 if (st_visual_have_buffers(visual
,
350 ST_ATTACHMENT_FRONT_RIGHT_MASK
| ST_ATTACHMENT_BACK_RIGHT_MASK
))
351 mode
->stereoMode
= GL_TRUE
;
353 if (visual
->color_format
!= PIPE_FORMAT_NONE
) {
354 mode
->rgbMode
= GL_TRUE
;
357 util_format_get_component_bits(visual
->color_format
,
358 UTIL_FORMAT_COLORSPACE_RGB
, 0);
360 util_format_get_component_bits(visual
->color_format
,
361 UTIL_FORMAT_COLORSPACE_RGB
, 1);
363 util_format_get_component_bits(visual
->color_format
,
364 UTIL_FORMAT_COLORSPACE_RGB
, 2);
366 util_format_get_component_bits(visual
->color_format
,
367 UTIL_FORMAT_COLORSPACE_RGB
, 3);
369 mode
->rgbBits
= mode
->redBits
+
370 mode
->greenBits
+ mode
->blueBits
+ mode
->alphaBits
;
371 mode
->sRGBCapable
= util_format_is_srgb(visual
->color_format
);
374 if (visual
->depth_stencil_format
!= PIPE_FORMAT_NONE
) {
376 util_format_get_component_bits(visual
->depth_stencil_format
,
377 UTIL_FORMAT_COLORSPACE_ZS
, 0);
379 util_format_get_component_bits(visual
->depth_stencil_format
,
380 UTIL_FORMAT_COLORSPACE_ZS
, 1);
382 mode
->haveDepthBuffer
= mode
->depthBits
> 0;
383 mode
->haveStencilBuffer
= mode
->stencilBits
> 0;
386 if (visual
->accum_format
!= PIPE_FORMAT_NONE
) {
387 mode
->haveAccumBuffer
= GL_TRUE
;
390 util_format_get_component_bits(visual
->accum_format
,
391 UTIL_FORMAT_COLORSPACE_RGB
, 0);
392 mode
->accumGreenBits
=
393 util_format_get_component_bits(visual
->accum_format
,
394 UTIL_FORMAT_COLORSPACE_RGB
, 1);
395 mode
->accumBlueBits
=
396 util_format_get_component_bits(visual
->accum_format
,
397 UTIL_FORMAT_COLORSPACE_RGB
, 2);
398 mode
->accumAlphaBits
=
399 util_format_get_component_bits(visual
->accum_format
,
400 UTIL_FORMAT_COLORSPACE_RGB
, 3);
403 if (visual
->samples
> 1) {
404 mode
->sampleBuffers
= 1;
405 mode
->samples
= visual
->samples
;
410 * Create a framebuffer from a manager interface.
412 static struct st_framebuffer
*
413 st_framebuffer_create(struct st_context
*st
,
414 struct st_framebuffer_iface
*stfbi
)
416 struct st_framebuffer
*stfb
;
417 struct gl_config mode
;
423 stfb
= CALLOC_STRUCT(st_framebuffer
);
427 st_visual_to_context_mode(stfbi
->visual
, &mode
);
430 * For desktop GL, sRGB framebuffer write is controlled by both the
431 * capability of the framebuffer and GL_FRAMEBUFFER_SRGB. We should
432 * advertise the capability when the pipe driver (and core Mesa) supports
433 * it so that applications can enable sRGB write when they want to.
435 * This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB. When
436 * the attribute is GLX_TRUE, it tells the st manager to pick a color
437 * format such that util_format_srgb(visual->color_format) can be supported
438 * by the pipe driver. We still need to advertise the capability here.
440 * For GLES, however, sRGB framebuffer write is controlled only by the
441 * capability of the framebuffer. There is GL_EXT_sRGB_write_control to
442 * give applications the control back, but sRGB write is still enabled by
443 * default. To avoid unexpected results, we should not advertise the
444 * capability. This could change when we add support for
445 * EGL_KHR_gl_colorspace.
447 if (_mesa_is_desktop_gl(st
->ctx
)) {
448 struct pipe_screen
*screen
= st
->pipe
->screen
;
449 const enum pipe_format srgb_format
=
450 util_format_srgb(stfbi
->visual
->color_format
);
452 if (srgb_format
!= PIPE_FORMAT_NONE
&&
453 st_pipe_format_to_mesa_format(srgb_format
) != MESA_FORMAT_NONE
&&
454 screen
->is_format_supported(screen
, srgb_format
,
455 PIPE_TEXTURE_2D
, stfbi
->visual
->samples
,
456 (PIPE_BIND_DISPLAY_TARGET
|
457 PIPE_BIND_RENDER_TARGET
)))
458 mode
.sRGBCapable
= GL_TRUE
;
461 _mesa_initialize_window_framebuffer(&stfb
->Base
, &mode
);
464 stfb
->iface_stamp
= p_atomic_read(&stfbi
->stamp
) - 1;
466 /* add the color buffer */
467 idx
= stfb
->Base
._ColorDrawBufferIndexes
[0];
468 if (!st_framebuffer_add_renderbuffer(stfb
, idx
)) {
473 st_framebuffer_add_renderbuffer(stfb
, BUFFER_DEPTH
);
474 st_framebuffer_add_renderbuffer(stfb
, BUFFER_ACCUM
);
477 st_framebuffer_update_attachments(stfb
);
483 * Reference a framebuffer.
486 st_framebuffer_reference(struct st_framebuffer
**ptr
,
487 struct st_framebuffer
*stfb
)
489 struct gl_framebuffer
*fb
= &stfb
->Base
;
490 _mesa_reference_framebuffer((struct gl_framebuffer
**) ptr
, fb
);
494 st_context_flush(struct st_context_iface
*stctxi
, unsigned flags
,
495 struct pipe_fence_handle
**fence
)
497 struct st_context
*st
= (struct st_context
*) stctxi
;
498 unsigned pipe_flags
= 0;
500 if (flags
& ST_FLUSH_END_OF_FRAME
) {
501 pipe_flags
|= PIPE_FLUSH_END_OF_FRAME
;
504 st_flush(st
, fence
, pipe_flags
);
505 if (flags
& ST_FLUSH_FRONT
)
506 st_manager_flush_frontbuffer(st
);
510 st_context_teximage(struct st_context_iface
*stctxi
,
511 enum st_texture_type tex_type
,
512 int level
, enum pipe_format pipe_format
,
513 struct pipe_resource
*tex
, boolean mipmap
)
515 struct st_context
*st
= (struct st_context
*) stctxi
;
516 struct gl_context
*ctx
= st
->ctx
;
517 struct gl_texture_object
*texObj
;
518 struct gl_texture_image
*texImage
;
519 struct st_texture_object
*stObj
;
520 struct st_texture_image
*stImage
;
521 GLenum internalFormat
;
522 GLuint width
, height
, depth
;
527 target
= GL_TEXTURE_1D
;
530 target
= GL_TEXTURE_2D
;
533 target
= GL_TEXTURE_3D
;
535 case ST_TEXTURE_RECT
:
536 target
= GL_TEXTURE_RECTANGLE_ARB
;
542 texObj
= _mesa_get_current_tex_object(ctx
, target
);
544 _mesa_lock_texture(ctx
, texObj
);
546 stObj
= st_texture_object(texObj
);
547 /* switch to surface based */
548 if (!stObj
->surface_based
) {
549 _mesa_clear_texture_object(ctx
, texObj
);
550 stObj
->surface_based
= GL_TRUE
;
553 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
554 stImage
= st_texture_image(texImage
);
556 mesa_format texFormat
= st_pipe_format_to_mesa_format(pipe_format
);
558 if (util_format_has_alpha(tex
->format
))
559 internalFormat
= GL_RGBA
;
561 internalFormat
= GL_RGB
;
563 _mesa_init_teximage_fields(ctx
, texImage
,
564 tex
->width0
, tex
->height0
, 1, 0,
565 internalFormat
, texFormat
);
568 height
= tex
->height0
;
571 /* grow the image size until we hit level = 0 */
583 _mesa_clear_texture_image(ctx
, texImage
);
584 width
= height
= depth
= 0;
587 pipe_resource_reference(&stImage
->pt
, tex
);
588 stObj
->width0
= width
;
589 stObj
->height0
= height
;
590 stObj
->depth0
= depth
;
591 stObj
->surface_format
= pipe_format
;
593 _mesa_dirty_texobj(ctx
, texObj
);
594 _mesa_unlock_texture(ctx
, texObj
);
600 st_context_copy(struct st_context_iface
*stctxi
,
601 struct st_context_iface
*stsrci
, unsigned mask
)
603 struct st_context
*st
= (struct st_context
*) stctxi
;
604 struct st_context
*src
= (struct st_context
*) stsrci
;
606 _mesa_copy_context(src
->ctx
, st
->ctx
, mask
);
610 st_context_share(struct st_context_iface
*stctxi
,
611 struct st_context_iface
*stsrci
)
613 struct st_context
*st
= (struct st_context
*) stctxi
;
614 struct st_context
*src
= (struct st_context
*) stsrci
;
616 return _mesa_share_state(st
->ctx
, src
->ctx
);
620 st_context_destroy(struct st_context_iface
*stctxi
)
622 struct st_context
*st
= (struct st_context
*) stctxi
;
623 st_destroy_context(st
);
626 static struct st_context_iface
*
627 st_api_create_context(struct st_api
*stapi
, struct st_manager
*smapi
,
628 const struct st_context_attribs
*attribs
,
629 enum st_context_error
*error
,
630 struct st_context_iface
*shared_stctxi
)
632 struct st_context
*shared_ctx
= (struct st_context
*) shared_stctxi
;
633 struct st_context
*st
;
634 struct pipe_context
*pipe
;
635 struct gl_config mode
;
638 if (!(stapi
->profile_mask
& (1 << attribs
->profile
)))
641 switch (attribs
->profile
) {
642 case ST_PROFILE_DEFAULT
:
643 api
= API_OPENGL_COMPAT
;
645 case ST_PROFILE_OPENGL_ES1
:
648 case ST_PROFILE_OPENGL_ES2
:
651 case ST_PROFILE_OPENGL_CORE
:
652 api
= API_OPENGL_CORE
;
655 *error
= ST_CONTEXT_ERROR_BAD_API
;
660 pipe
= smapi
->screen
->context_create(smapi
->screen
, NULL
);
662 *error
= ST_CONTEXT_ERROR_NO_MEMORY
;
666 st_visual_to_context_mode(&attribs
->visual
, &mode
);
667 st
= st_create_context(api
, pipe
, &mode
, shared_ctx
, &attribs
->options
);
669 *error
= ST_CONTEXT_ERROR_NO_MEMORY
;
674 if (attribs
->flags
& ST_CONTEXT_FLAG_DEBUG
){
675 if (!_mesa_set_debug_state_int(st
->ctx
, GL_DEBUG_OUTPUT
, GL_TRUE
)) {
676 *error
= ST_CONTEXT_ERROR_NO_MEMORY
;
679 st
->ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_DEBUG_BIT
;
682 if (attribs
->flags
& ST_CONTEXT_FLAG_FORWARD_COMPATIBLE
)
683 st
->ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT
;
684 if (attribs
->flags
& ST_CONTEXT_FLAG_ROBUST_ACCESS
)
685 st
->ctx
->Const
.ContextFlags
|= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB
;
686 if (attribs
->flags
& ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED
)
687 st
->ctx
->Const
.ResetStrategy
= GL_LOSE_CONTEXT_ON_RESET_ARB
;
689 /* need to perform version check */
690 if (attribs
->major
> 1 || attribs
->minor
> 0) {
691 /* Is the actual version less than the requested version?
693 if (st
->ctx
->Version
< attribs
->major
* 10U + attribs
->minor
) {
694 *error
= ST_CONTEXT_ERROR_BAD_VERSION
;
695 st_destroy_context(st
);
700 st
->invalidate_on_gl_viewport
=
701 smapi
->get_param(smapi
, ST_MANAGER_BROKEN_INVALIDATE
);
703 st
->iface
.destroy
= st_context_destroy
;
704 st
->iface
.flush
= st_context_flush
;
705 st
->iface
.teximage
= st_context_teximage
;
706 st
->iface
.copy
= st_context_copy
;
707 st
->iface
.share
= st_context_share
;
708 st
->iface
.st_context_private
= (void *) smapi
;
709 st
->iface
.cso_context
= st
->cso_context
;
710 st
->iface
.pipe
= st
->pipe
;
712 *error
= ST_CONTEXT_SUCCESS
;
716 static struct st_context_iface
*
717 st_api_get_current(struct st_api
*stapi
)
719 GET_CURRENT_CONTEXT(ctx
);
720 struct st_context
*st
= (ctx
) ? ctx
->st
: NULL
;
722 return (st
) ? &st
->iface
: NULL
;
725 static struct st_framebuffer
*
726 st_framebuffer_reuse_or_create(struct st_context
*st
,
727 struct gl_framebuffer
*fb
,
728 struct st_framebuffer_iface
*stfbi
)
730 struct st_framebuffer
*cur
= st_ws_framebuffer(fb
), *stfb
= NULL
;
732 /* dummy framebuffers cant be used as st_framebuffer */
733 if (cur
&& &cur
->Base
!= _mesa_get_incomplete_framebuffer() &&
734 cur
->iface
== stfbi
) {
735 /* reuse the current stfb */
736 st_framebuffer_reference(&stfb
, cur
);
739 /* create a new one */
740 stfb
= st_framebuffer_create(st
, stfbi
);
747 st_api_make_current(struct st_api
*stapi
, struct st_context_iface
*stctxi
,
748 struct st_framebuffer_iface
*stdrawi
,
749 struct st_framebuffer_iface
*streadi
)
751 struct st_context
*st
= (struct st_context
*) stctxi
;
752 struct st_framebuffer
*stdraw
, *stread
;
755 _glapi_check_multithread();
758 /* reuse or create the draw fb */
759 stdraw
= st_framebuffer_reuse_or_create(st
,
760 st
->ctx
->WinSysDrawBuffer
, stdrawi
);
761 if (streadi
!= stdrawi
) {
762 /* do the same for the read fb */
763 stread
= st_framebuffer_reuse_or_create(st
,
764 st
->ctx
->WinSysReadBuffer
, streadi
);
768 /* reuse the draw fb for the read fb */
770 st_framebuffer_reference(&stread
, stdraw
);
773 if (stdraw
&& stread
) {
774 st_framebuffer_validate(stdraw
, st
);
775 if (stread
!= stdraw
)
776 st_framebuffer_validate(stread
, st
);
778 ret
= _mesa_make_current(st
->ctx
, &stdraw
->Base
, &stread
->Base
);
780 st
->draw_stamp
= stdraw
->stamp
- 1;
781 st
->read_stamp
= stread
->stamp
- 1;
782 st_context_validate(st
, stdraw
, stread
);
785 struct gl_framebuffer
*incomplete
= _mesa_get_incomplete_framebuffer();
786 ret
= _mesa_make_current(st
->ctx
, incomplete
, incomplete
);
789 st_framebuffer_reference(&stdraw
, NULL
);
790 st_framebuffer_reference(&stread
, NULL
);
793 ret
= _mesa_make_current(NULL
, NULL
, NULL
);
800 st_api_get_proc_address(struct st_api
*stapi
, const char *procname
)
802 return (st_proc_t
) _glapi_get_proc_address(procname
);
806 st_api_destroy(struct st_api
*stapi
)
811 * Flush the front buffer if the current context renders to the front buffer.
814 st_manager_flush_frontbuffer(struct st_context
*st
)
816 struct st_framebuffer
*stfb
= st_ws_framebuffer(st
->ctx
->DrawBuffer
);
817 struct st_renderbuffer
*strb
= NULL
;
820 strb
= st_renderbuffer(stfb
->Base
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
824 /* never a dummy fb */
825 assert(&stfb
->Base
!= _mesa_get_incomplete_framebuffer());
826 stfb
->iface
->flush_front(&st
->iface
, stfb
->iface
, ST_ATTACHMENT_FRONT_LEFT
);
830 * Return the surface of an EGLImage.
831 * FIXME: I think this should operate on resources, not surfaces
833 struct pipe_surface
*
834 st_manager_get_egl_image_surface(struct st_context
*st
, void *eglimg
)
836 struct st_manager
*smapi
=
837 (struct st_manager
*) st
->iface
.st_context_private
;
838 struct st_egl_image stimg
;
839 struct pipe_surface
*ps
, surf_tmpl
;
841 if (!smapi
|| !smapi
->get_egl_image
)
844 memset(&stimg
, 0, sizeof(stimg
));
845 if (!smapi
->get_egl_image(smapi
, eglimg
, &stimg
))
848 u_surface_default_template(&surf_tmpl
, stimg
.texture
);
849 surf_tmpl
.u
.tex
.level
= stimg
.level
;
850 surf_tmpl
.u
.tex
.first_layer
= stimg
.layer
;
851 surf_tmpl
.u
.tex
.last_layer
= stimg
.layer
;
852 ps
= st
->pipe
->create_surface(st
->pipe
, stimg
.texture
, &surf_tmpl
);
853 pipe_resource_reference(&stimg
.texture
, NULL
);
859 * Re-validate the framebuffers.
862 st_manager_validate_framebuffers(struct st_context
*st
)
864 struct st_framebuffer
*stdraw
= st_ws_framebuffer(st
->ctx
->DrawBuffer
);
865 struct st_framebuffer
*stread
= st_ws_framebuffer(st
->ctx
->ReadBuffer
);
868 st_framebuffer_validate(stdraw
, st
);
869 if (stread
&& stread
!= stdraw
)
870 st_framebuffer_validate(stread
, st
);
872 st_context_validate(st
, stdraw
, stread
);
876 * Add a color renderbuffer on demand.
879 st_manager_add_color_renderbuffer(struct st_context
*st
,
880 struct gl_framebuffer
*fb
,
883 struct st_framebuffer
*stfb
= st_ws_framebuffer(fb
);
889 if (stfb
->Base
.Attachment
[idx
].Renderbuffer
)
893 case BUFFER_FRONT_LEFT
:
894 case BUFFER_BACK_LEFT
:
895 case BUFFER_FRONT_RIGHT
:
896 case BUFFER_BACK_RIGHT
:
903 if (!st_framebuffer_add_renderbuffer(stfb
, idx
))
906 st_framebuffer_update_attachments(stfb
);
909 * Force a call to the state tracker manager to validate the
910 * new renderbuffer. It might be that there is a window system
911 * renderbuffer available.
914 stfb
->iface_stamp
= p_atomic_read(&stfb
->iface
->stamp
) - 1;
916 st_invalidate_state(st
->ctx
, _NEW_BUFFERS
);
921 static unsigned get_version(struct pipe_screen
*screen
,
922 struct st_config_options
*options
, gl_api api
)
924 struct gl_constants consts
= {0};
925 struct gl_extensions extensions
= {0};
928 if (_mesa_override_gl_version_contextless(&consts
, &api
, &version
)) {
932 _mesa_init_constants(&consts
, api
);
933 _mesa_init_extensions(&extensions
);
935 st_init_limits(screen
, &consts
, &extensions
);
936 st_init_extensions(screen
, &consts
, &extensions
, options
, GL_TRUE
);
938 return _mesa_get_version(&extensions
, &consts
, api
);
942 st_api_query_versions(struct st_api
*stapi
, struct st_manager
*sm
,
943 struct st_config_options
*options
,
944 int *gl_core_version
,
945 int *gl_compat_version
,
949 *gl_core_version
= get_version(sm
->screen
, options
, API_OPENGL_CORE
);
950 *gl_compat_version
= get_version(sm
->screen
, options
, API_OPENGL_COMPAT
);
951 *gl_es1_version
= get_version(sm
->screen
, options
, API_OPENGLES
);
952 *gl_es2_version
= get_version(sm
->screen
, options
, API_OPENGLES2
);
955 static const struct st_api st_gl_api
= {
956 "Mesa " PACKAGE_VERSION
,
958 ST_PROFILE_DEFAULT_MASK
|
959 ST_PROFILE_OPENGL_CORE_MASK
|
960 ST_PROFILE_OPENGL_ES1_MASK
|
961 ST_PROFILE_OPENGL_ES2_MASK
|
963 ST_API_FEATURE_MS_VISUALS_MASK
,
965 st_api_query_versions
,
966 st_api_get_proc_address
,
967 st_api_create_context
,
973 st_gl_api_create(void)
975 return (struct st_api
*) &st_gl_api
;