2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
26 * Chia-I Wu <olv@lunarg.com>
29 #include "state_tracker/st_gl_api.h"
31 #include "pipe/p_context.h"
32 #include "pipe/p_screen.h"
33 #include "util/u_format.h"
34 #include "util/u_pointer.h"
35 #include "util/u_inlines.h"
36 #include "util/u_atomic.h"
37 #include "util/u_surface.h"
39 #include "main/mtypes.h"
40 #include "main/context.h"
41 #include "main/mfeatures.h"
42 #include "main/texobj.h"
43 #include "main/teximage.h"
44 #include "main/texstate.h"
45 #include "main/framebuffer.h"
46 #include "main/fbobject.h"
47 #include "main/renderbuffer.h"
48 #include "main/version.h"
49 #include "st_texture.h"
51 #include "st_context.h"
52 #include "st_format.h"
53 #include "st_cb_fbo.h"
54 #include "st_cb_flush.h"
55 #include "st_manager.h"
58 * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer.
59 * Return NULL if the struct gl_framebuffer is a user-created framebuffer.
60 * We'll only return non-null for window system framebuffers.
61 * Note that this function may fail.
63 static INLINE
struct st_framebuffer
*
64 st_ws_framebuffer(struct gl_framebuffer
*fb
)
66 /* FBO cannot be casted. See st_new_framebuffer */
67 return (struct st_framebuffer
*) ((fb
&& !fb
->Name
) ? fb
: NULL
);
71 * Map an attachment to a buffer index.
73 static INLINE gl_buffer_index
74 attachment_to_buffer_index(enum st_attachment_type statt
)
76 gl_buffer_index index
;
79 case ST_ATTACHMENT_FRONT_LEFT
:
80 index
= BUFFER_FRONT_LEFT
;
82 case ST_ATTACHMENT_BACK_LEFT
:
83 index
= BUFFER_BACK_LEFT
;
85 case ST_ATTACHMENT_FRONT_RIGHT
:
86 index
= BUFFER_FRONT_RIGHT
;
88 case ST_ATTACHMENT_BACK_RIGHT
:
89 index
= BUFFER_BACK_RIGHT
;
91 case ST_ATTACHMENT_DEPTH_STENCIL
:
94 case ST_ATTACHMENT_ACCUM
:
97 case ST_ATTACHMENT_SAMPLE
:
107 * Map a buffer index to an attachment.
109 static INLINE
enum st_attachment_type
110 buffer_index_to_attachment(gl_buffer_index index
)
112 enum st_attachment_type statt
;
115 case BUFFER_FRONT_LEFT
:
116 statt
= ST_ATTACHMENT_FRONT_LEFT
;
118 case BUFFER_BACK_LEFT
:
119 statt
= ST_ATTACHMENT_BACK_LEFT
;
121 case BUFFER_FRONT_RIGHT
:
122 statt
= ST_ATTACHMENT_FRONT_RIGHT
;
124 case BUFFER_BACK_RIGHT
:
125 statt
= ST_ATTACHMENT_BACK_RIGHT
;
128 statt
= ST_ATTACHMENT_DEPTH_STENCIL
;
131 statt
= ST_ATTACHMENT_ACCUM
;
134 statt
= ST_ATTACHMENT_INVALID
;
142 * Make sure a context picks up the latest cached state of the
143 * drawables it binds to.
146 st_context_validate(struct st_context
*st
,
147 struct st_framebuffer
*stdraw
,
148 struct st_framebuffer
*stread
)
150 if (stdraw
&& stdraw
->stamp
!= st
->draw_stamp
) {
151 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
152 _mesa_resize_framebuffer(st
->ctx
, &stdraw
->Base
,
154 stdraw
->Base
.Height
);
155 st
->draw_stamp
= stdraw
->stamp
;
158 if (stread
&& stread
->stamp
!= st
->read_stamp
) {
159 if (stread
!= stdraw
) {
160 st
->dirty
.st
|= ST_NEW_FRAMEBUFFER
;
161 _mesa_resize_framebuffer(st
->ctx
, &stread
->Base
,
163 stread
->Base
.Height
);
165 st
->read_stamp
= stread
->stamp
;
170 * Validate a framebuffer to make sure up-to-date pipe_textures are used.
171 * The context we need to pass in is s dummy context needed only to be
172 * able to get a pipe context to create pipe surfaces, and to have a
173 * context to call _mesa_resize_framebuffer():
174 * (That should probably be rethought, since those surfaces become
175 * drawable state, not context state, and can be freed by another pipe
179 st_framebuffer_validate(struct st_framebuffer
*stfb
,
180 struct st_context
*st
)
182 struct pipe_resource
*textures
[ST_ATTACHMENT_COUNT
];
185 boolean changed
= FALSE
;
186 int32_t new_stamp
= p_atomic_read(&stfb
->iface
->stamp
);
188 if (stfb
->iface_stamp
== new_stamp
)
191 /* validate the fb */
193 if (!stfb
->iface
->validate(stfb
->iface
, stfb
->statts
,
194 stfb
->num_statts
, textures
))
197 stfb
->iface_stamp
= new_stamp
;
198 new_stamp
= p_atomic_read(&stfb
->iface
->stamp
);
199 } while(stfb
->iface_stamp
!= new_stamp
);
201 width
= stfb
->Base
.Width
;
202 height
= stfb
->Base
.Height
;
204 for (i
= 0; i
< stfb
->num_statts
; i
++) {
205 struct st_renderbuffer
*strb
;
206 struct pipe_surface
*ps
, surf_tmpl
;
212 idx
= attachment_to_buffer_index(stfb
->statts
[i
]);
213 if (idx
>= BUFFER_COUNT
) {
214 pipe_resource_reference(&textures
[i
], NULL
);
218 strb
= st_renderbuffer(stfb
->Base
.Attachment
[idx
].Renderbuffer
);
220 if (strb
->texture
== textures
[i
]) {
221 pipe_resource_reference(&textures
[i
], NULL
);
225 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
226 u_surface_default_template(&surf_tmpl
, textures
[i
],
227 PIPE_BIND_RENDER_TARGET
);
228 ps
= st
->pipe
->create_surface(st
->pipe
, textures
[i
], &surf_tmpl
);
230 pipe_surface_reference(&strb
->surface
, ps
);
231 pipe_resource_reference(&strb
->texture
, ps
->texture
);
232 /* ownership transfered */
233 pipe_surface_reference(&ps
, NULL
);
237 strb
->Base
.Width
= strb
->surface
->width
;
238 strb
->Base
.Height
= strb
->surface
->height
;
240 width
= strb
->Base
.Width
;
241 height
= strb
->Base
.Height
;
244 pipe_resource_reference(&textures
[i
], NULL
);
249 _mesa_resize_framebuffer(st
->ctx
, &stfb
->Base
, width
, height
);
254 * Update the attachments to validate by looping the existing renderbuffers.
257 st_framebuffer_update_attachments(struct st_framebuffer
*stfb
)
261 stfb
->num_statts
= 0;
262 for (idx
= 0; idx
< BUFFER_COUNT
; idx
++) {
263 struct st_renderbuffer
*strb
;
264 enum st_attachment_type statt
;
266 strb
= st_renderbuffer(stfb
->Base
.Attachment
[idx
].Renderbuffer
);
267 if (!strb
|| strb
->software
)
270 statt
= buffer_index_to_attachment(idx
);
271 if (statt
!= ST_ATTACHMENT_INVALID
&&
272 st_visual_have_buffers(stfb
->iface
->visual
, 1 << statt
))
273 stfb
->statts
[stfb
->num_statts
++] = statt
;
279 * Add a renderbuffer to the framebuffer.
282 st_framebuffer_add_renderbuffer(struct st_framebuffer
*stfb
,
285 struct gl_renderbuffer
*rb
;
286 enum pipe_format format
;
293 /* do not distinguish depth/stencil buffers */
294 if (idx
== BUFFER_STENCIL
)
299 format
= stfb
->iface
->visual
->depth_stencil_format
;
303 format
= stfb
->iface
->visual
->accum_format
;
307 format
= stfb
->iface
->visual
->color_format
;
312 if (format
== PIPE_FORMAT_NONE
)
315 samples
= stfb
->iface
->visual
->samples
;
317 samples
= st_get_msaa();
319 rb
= st_new_renderbuffer_fb(format
, samples
, sw
);
323 if (idx
!= BUFFER_DEPTH
) {
324 _mesa_add_renderbuffer(&stfb
->Base
, idx
, rb
);
327 if (util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 0))
328 _mesa_add_renderbuffer(&stfb
->Base
, BUFFER_DEPTH
, rb
);
329 if (util_format_get_component_bits(format
, UTIL_FORMAT_COLORSPACE_ZS
, 1))
330 _mesa_add_renderbuffer(&stfb
->Base
, BUFFER_STENCIL
, rb
);
337 * Intialize a struct gl_config from a visual.
340 st_visual_to_context_mode(const struct st_visual
*visual
,
341 struct gl_config
*mode
)
343 memset(mode
, 0, sizeof(*mode
));
345 if (st_visual_have_buffers(visual
, ST_ATTACHMENT_BACK_LEFT_MASK
))
346 mode
->doubleBufferMode
= GL_TRUE
;
347 if (st_visual_have_buffers(visual
,
348 ST_ATTACHMENT_FRONT_RIGHT_MASK
| ST_ATTACHMENT_BACK_RIGHT_MASK
))
349 mode
->stereoMode
= GL_TRUE
;
351 if (visual
->color_format
!= PIPE_FORMAT_NONE
) {
352 mode
->rgbMode
= GL_TRUE
;
355 util_format_get_component_bits(visual
->color_format
,
356 UTIL_FORMAT_COLORSPACE_RGB
, 0);
358 util_format_get_component_bits(visual
->color_format
,
359 UTIL_FORMAT_COLORSPACE_RGB
, 1);
361 util_format_get_component_bits(visual
->color_format
,
362 UTIL_FORMAT_COLORSPACE_RGB
, 2);
364 util_format_get_component_bits(visual
->color_format
,
365 UTIL_FORMAT_COLORSPACE_RGB
, 3);
367 mode
->rgbBits
= mode
->redBits
+
368 mode
->greenBits
+ mode
->blueBits
+ mode
->alphaBits
;
371 if (visual
->depth_stencil_format
!= PIPE_FORMAT_NONE
) {
373 util_format_get_component_bits(visual
->depth_stencil_format
,
374 UTIL_FORMAT_COLORSPACE_ZS
, 0);
376 util_format_get_component_bits(visual
->depth_stencil_format
,
377 UTIL_FORMAT_COLORSPACE_ZS
, 1);
379 mode
->haveDepthBuffer
= mode
->depthBits
> 0;
380 mode
->haveStencilBuffer
= mode
->stencilBits
> 0;
383 if (visual
->accum_format
!= PIPE_FORMAT_NONE
) {
384 mode
->haveAccumBuffer
= GL_TRUE
;
387 util_format_get_component_bits(visual
->accum_format
,
388 UTIL_FORMAT_COLORSPACE_RGB
, 0);
389 mode
->accumGreenBits
=
390 util_format_get_component_bits(visual
->accum_format
,
391 UTIL_FORMAT_COLORSPACE_RGB
, 1);
392 mode
->accumBlueBits
=
393 util_format_get_component_bits(visual
->accum_format
,
394 UTIL_FORMAT_COLORSPACE_RGB
, 2);
395 mode
->accumAlphaBits
=
396 util_format_get_component_bits(visual
->accum_format
,
397 UTIL_FORMAT_COLORSPACE_RGB
, 3);
400 if (visual
->samples
) {
401 mode
->sampleBuffers
= 1;
402 mode
->samples
= visual
->samples
;
407 * Determine the default draw or read buffer from a visual.
410 st_visual_to_default_buffer(const struct st_visual
*visual
,
411 GLenum
*buffer
, GLint
*index
)
413 enum st_attachment_type statt
;
417 statt
= visual
->render_buffer
;
418 /* do nothing if an invalid render buffer is specified */
419 if (statt
== ST_ATTACHMENT_INVALID
||
420 !st_visual_have_buffers(visual
, 1 << statt
))
424 case ST_ATTACHMENT_FRONT_LEFT
:
426 idx
= BUFFER_FRONT_LEFT
;
428 case ST_ATTACHMENT_BACK_LEFT
:
430 idx
= BUFFER_BACK_LEFT
;
432 case ST_ATTACHMENT_FRONT_RIGHT
:
433 buf
= GL_FRONT_RIGHT
;
434 idx
= BUFFER_FRONT_RIGHT
;
436 case ST_ATTACHMENT_BACK_RIGHT
:
438 idx
= BUFFER_BACK_RIGHT
;
446 if (buf
!= GL_NONE
) {
455 * Create a framebuffer from a manager interface.
457 static struct st_framebuffer
*
458 st_framebuffer_create(struct st_framebuffer_iface
*stfbi
)
460 struct st_framebuffer
*stfb
;
461 struct gl_config mode
;
467 stfb
= CALLOC_STRUCT(st_framebuffer
);
471 st_visual_to_context_mode(stfbi
->visual
, &mode
);
472 _mesa_initialize_window_framebuffer(&stfb
->Base
, &mode
);
474 /* modify the draw/read buffers of the fb */
475 st_visual_to_default_buffer(stfbi
->visual
, &stfb
->Base
.ColorDrawBuffer
[0],
476 &stfb
->Base
._ColorDrawBufferIndexes
[0]);
477 st_visual_to_default_buffer(stfbi
->visual
, &stfb
->Base
.ColorReadBuffer
,
478 &stfb
->Base
._ColorReadBufferIndex
);
481 stfb
->iface_stamp
= p_atomic_read(&stfbi
->stamp
) - 1;
483 /* add the color buffer */
484 idx
= stfb
->Base
._ColorDrawBufferIndexes
[0];
485 if (!st_framebuffer_add_renderbuffer(stfb
, idx
)) {
490 st_framebuffer_add_renderbuffer(stfb
, BUFFER_DEPTH
);
491 st_framebuffer_add_renderbuffer(stfb
, BUFFER_ACCUM
);
494 st_framebuffer_update_attachments(stfb
);
496 stfb
->Base
.Initialized
= GL_TRUE
;
502 * Reference a framebuffer.
505 st_framebuffer_reference(struct st_framebuffer
**ptr
,
506 struct st_framebuffer
*stfb
)
508 struct gl_framebuffer
*fb
= &stfb
->Base
;
509 _mesa_reference_framebuffer((struct gl_framebuffer
**) ptr
, fb
);
513 st_context_flush(struct st_context_iface
*stctxi
, unsigned flags
,
514 struct pipe_fence_handle
**fence
)
516 struct st_context
*st
= (struct st_context
*) stctxi
;
518 if (flags
& ST_FLUSH_FRONT
)
519 st_manager_flush_frontbuffer(st
);
523 st_context_teximage(struct st_context_iface
*stctxi
,
524 enum st_texture_type target
,
525 int level
, enum pipe_format internal_format
,
526 struct pipe_resource
*tex
, boolean mipmap
)
528 struct st_context
*st
= (struct st_context
*) stctxi
;
529 struct gl_context
*ctx
= st
->ctx
;
530 struct gl_texture_unit
*texUnit
= _mesa_get_current_tex_unit(ctx
);
531 struct gl_texture_object
*texObj
;
532 struct gl_texture_image
*texImage
;
533 struct st_texture_object
*stObj
;
534 struct st_texture_image
*stImage
;
535 GLenum internalFormat
;
536 GLuint width
, height
, depth
;
540 target
= GL_TEXTURE_1D
;
543 target
= GL_TEXTURE_2D
;
546 target
= GL_TEXTURE_3D
;
548 case ST_TEXTURE_RECT
:
549 target
= GL_TEXTURE_RECTANGLE_ARB
;
556 texObj
= _mesa_select_tex_object(ctx
, texUnit
, target
);
557 _mesa_lock_texture(ctx
, texObj
);
559 stObj
= st_texture_object(texObj
);
560 /* switch to surface based */
561 if (!stObj
->surface_based
) {
562 _mesa_clear_texture_object(ctx
, texObj
);
563 stObj
->surface_based
= GL_TRUE
;
566 texImage
= _mesa_get_tex_image(ctx
, texObj
, target
, level
);
567 stImage
= st_texture_image(texImage
);
572 * XXX When internal_format and tex->format differ, st_finalize_texture
573 * needs to allocate a new texture with internal_format and copy the
574 * texture here into the new one. It will result in surface_copy being
575 * called on surfaces whose formats differ.
577 * To avoid that, internal_format is (wrongly) ignored here. A sane fix
578 * is to use a sampler view.
580 if (!st_sampler_compat_formats(tex
->format
, internal_format
))
581 internal_format
= tex
->format
;
583 if (util_format_get_component_bits(internal_format
,
584 UTIL_FORMAT_COLORSPACE_RGB
, 3) > 0)
585 internalFormat
= GL_RGBA
;
587 internalFormat
= GL_RGB
;
589 texFormat
= st_ChooseTextureFormat(ctx
, internalFormat
,
590 GL_RGBA
, GL_UNSIGNED_BYTE
);
592 _mesa_init_teximage_fields(ctx
, target
, texImage
,
593 tex
->width0
, tex
->height0
, 1, 0,
594 internalFormat
, texFormat
);
597 height
= tex
->height0
;
600 /* grow the image size until we hit level = 0 */
612 _mesa_clear_texture_image(ctx
, texImage
);
613 width
= height
= depth
= 0;
616 pipe_resource_reference(&stImage
->pt
, tex
);
617 stObj
->width0
= width
;
618 stObj
->height0
= height
;
619 stObj
->depth0
= depth
;
621 _mesa_dirty_texobj(ctx
, texObj
, GL_TRUE
);
622 _mesa_unlock_texture(ctx
, texObj
);
628 st_context_copy(struct st_context_iface
*stctxi
,
629 struct st_context_iface
*stsrci
, unsigned mask
)
631 struct st_context
*st
= (struct st_context
*) stctxi
;
632 struct st_context
*src
= (struct st_context
*) stsrci
;
634 _mesa_copy_context(src
->ctx
, st
->ctx
, mask
);
638 st_context_share(struct st_context_iface
*stctxi
,
639 struct st_context_iface
*stsrci
)
641 struct st_context
*st
= (struct st_context
*) stctxi
;
642 struct st_context
*src
= (struct st_context
*) stsrci
;
644 return _mesa_share_state(st
->ctx
, src
->ctx
);
648 st_context_destroy(struct st_context_iface
*stctxi
)
650 struct st_context
*st
= (struct st_context
*) stctxi
;
651 st_destroy_context(st
);
654 static struct st_context_iface
*
655 st_api_create_context(struct st_api
*stapi
, struct st_manager
*smapi
,
656 const struct st_context_attribs
*attribs
,
657 struct st_context_iface
*shared_stctxi
)
659 struct st_context
*shared_ctx
= (struct st_context
*) shared_stctxi
;
660 struct st_context
*st
;
661 struct pipe_context
*pipe
;
662 struct gl_config mode
;
665 if (!(stapi
->profile_mask
& (1 << attribs
->profile
)))
668 switch (attribs
->profile
) {
669 case ST_PROFILE_DEFAULT
:
672 case ST_PROFILE_OPENGL_ES1
:
675 case ST_PROFILE_OPENGL_ES2
:
678 case ST_PROFILE_OPENGL_CORE
:
684 pipe
= smapi
->screen
->context_create(smapi
->screen
, NULL
);
688 st_visual_to_context_mode(&attribs
->visual
, &mode
);
689 st
= st_create_context(api
, pipe
, &mode
, shared_ctx
);
695 /* need to perform version check */
696 if (attribs
->major
> 1 || attribs
->minor
> 0) {
697 _mesa_compute_version(st
->ctx
);
699 /* is the actual version less than the requested version? */
700 if (st
->ctx
->VersionMajor
* 10 + st
->ctx
->VersionMinor
<
701 attribs
->major
* 10 + attribs
->minor
) {
702 st_destroy_context(st
);
707 st
->invalidate_on_gl_viewport
=
708 smapi
->get_param(smapi
, ST_MANAGER_BROKEN_INVALIDATE
);
710 st
->iface
.destroy
= st_context_destroy
;
711 st
->iface
.flush
= st_context_flush
;
712 st
->iface
.teximage
= st_context_teximage
;
713 st
->iface
.copy
= st_context_copy
;
714 st
->iface
.share
= st_context_share
;
715 st
->iface
.st_context_private
= (void *) smapi
;
720 static struct st_context_iface
*
721 st_api_get_current(struct st_api
*stapi
)
723 GET_CURRENT_CONTEXT(ctx
);
724 struct st_context
*st
= (ctx
) ? ctx
->st
: NULL
;
726 return (st
) ? &st
->iface
: NULL
;
729 static struct st_framebuffer
*
730 st_framebuffer_reuse_or_create(struct gl_framebuffer
*fb
,
731 struct st_framebuffer_iface
*stfbi
)
733 struct st_framebuffer
*cur
= st_ws_framebuffer(fb
), *stfb
= NULL
;
735 if (cur
&& cur
->iface
== stfbi
) {
736 /* reuse the current stfb */
737 st_framebuffer_reference(&stfb
, cur
);
740 /* create a new one */
741 stfb
= st_framebuffer_create(stfbi
);
748 st_api_make_current(struct st_api
*stapi
, struct st_context_iface
*stctxi
,
749 struct st_framebuffer_iface
*stdrawi
,
750 struct st_framebuffer_iface
*streadi
)
752 struct st_context
*st
= (struct st_context
*) stctxi
;
753 struct st_framebuffer
*stdraw
, *stread
;
756 _glapi_check_multithread();
759 /* reuse or create the draw fb */
760 stdraw
= st_framebuffer_reuse_or_create(st
->ctx
->WinSysDrawBuffer
,
762 if (streadi
!= stdrawi
) {
763 /* do the same for the read fb */
764 stread
= st_framebuffer_reuse_or_create(st
->ctx
->WinSysReadBuffer
,
769 /* reuse the draw fb for the read fb */
771 st_framebuffer_reference(&stread
, stdraw
);
774 if (stdraw
&& stread
) {
775 st_framebuffer_validate(stdraw
, st
);
776 if (stread
!= stdraw
)
777 st_framebuffer_validate(stread
, st
);
779 /* modify the draw/read buffers of the context */
781 st_visual_to_default_buffer(stdraw
->iface
->visual
,
782 &st
->ctx
->Color
.DrawBuffer
[0], NULL
);
785 st_visual_to_default_buffer(stread
->iface
->visual
,
786 &st
->ctx
->Pixel
.ReadBuffer
, NULL
);
789 ret
= _mesa_make_current(st
->ctx
, &stdraw
->Base
, &stread
->Base
);
791 st
->draw_stamp
= stdraw
->stamp
- 1;
792 st
->read_stamp
= stread
->stamp
- 1;
793 st_context_validate(st
, stdraw
, stread
);
796 struct gl_framebuffer
*incomplete
= _mesa_get_incomplete_framebuffer();
797 ret
= _mesa_make_current(st
->ctx
, incomplete
, incomplete
);
800 st_framebuffer_reference(&stdraw
, NULL
);
801 st_framebuffer_reference(&stread
, NULL
);
804 ret
= _mesa_make_current(NULL
, NULL
, NULL
);
811 st_api_get_proc_address(struct st_api
*stapi
, const char *procname
)
813 return (st_proc_t
) _glapi_get_proc_address(procname
);
817 st_api_destroy(struct st_api
*stapi
)
822 * Flush the front buffer if the current context renders to the front buffer.
825 st_manager_flush_frontbuffer(struct st_context
*st
)
827 struct st_framebuffer
*stfb
= st_ws_framebuffer(st
->ctx
->DrawBuffer
);
828 struct st_renderbuffer
*strb
= NULL
;
831 strb
= st_renderbuffer(stfb
->Base
.Attachment
[BUFFER_FRONT_LEFT
].Renderbuffer
);
835 /* never a dummy fb */
837 stfb
->iface
->flush_front(stfb
->iface
, ST_ATTACHMENT_FRONT_LEFT
);
841 * Return the surface of an EGLImage.
842 * FIXME: I think this should operate on resources, not surfaces
844 struct pipe_surface
*
845 st_manager_get_egl_image_surface(struct st_context
*st
,
846 void *eglimg
, unsigned usage
)
848 struct st_manager
*smapi
=
849 (struct st_manager
*) st
->iface
.st_context_private
;
850 struct st_egl_image stimg
;
851 struct pipe_surface
*ps
, surf_tmpl
;
853 if (!smapi
|| !smapi
->get_egl_image
)
856 memset(&stimg
, 0, sizeof(stimg
));
857 if (!smapi
->get_egl_image(smapi
, eglimg
, &stimg
))
860 memset(&surf_tmpl
, 0, sizeof(surf_tmpl
));
861 surf_tmpl
.format
= stimg
.texture
->format
;
862 surf_tmpl
.usage
= usage
;
863 surf_tmpl
.u
.tex
.level
= stimg
.level
;
864 surf_tmpl
.u
.tex
.first_layer
= stimg
.layer
;
865 surf_tmpl
.u
.tex
.last_layer
= stimg
.layer
;
866 ps
= st
->pipe
->create_surface(st
->pipe
, stimg
.texture
, &surf_tmpl
);
867 pipe_resource_reference(&stimg
.texture
, NULL
);
873 * Re-validate the framebuffers.
876 st_manager_validate_framebuffers(struct st_context
*st
)
878 struct st_framebuffer
*stdraw
= st_ws_framebuffer(st
->ctx
->DrawBuffer
);
879 struct st_framebuffer
*stread
= st_ws_framebuffer(st
->ctx
->ReadBuffer
);
882 st_framebuffer_validate(stdraw
, st
);
883 if (stread
&& stread
!= stdraw
)
884 st_framebuffer_validate(stread
, st
);
886 st_context_validate(st
, stdraw
, stread
);
890 * Add a color renderbuffer on demand.
893 st_manager_add_color_renderbuffer(struct st_context
*st
,
894 struct gl_framebuffer
*fb
,
897 struct st_framebuffer
*stfb
= st_ws_framebuffer(fb
);
903 if (stfb
->Base
.Attachment
[idx
].Renderbuffer
)
907 case BUFFER_FRONT_LEFT
:
908 case BUFFER_BACK_LEFT
:
909 case BUFFER_FRONT_RIGHT
:
910 case BUFFER_BACK_RIGHT
:
917 if (!st_framebuffer_add_renderbuffer(stfb
, idx
))
920 st_framebuffer_update_attachments(stfb
);
921 st_invalidate_state(st
->ctx
, _NEW_BUFFERS
);
926 static const struct st_api st_gl_api
= {
927 "Mesa " MESA_VERSION_STRING
,
930 ST_PROFILE_DEFAULT_MASK
|
933 ST_PROFILE_OPENGL_ES1_MASK
|
936 ST_PROFILE_OPENGL_ES2_MASK
|
940 st_api_get_proc_address
,
941 st_api_create_context
,
947 st_gl_api_create(void)
949 return (struct st_api
*) &st_gl_api
;