2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
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
18 * OR 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
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * GL_EXT/ARB_framebuffer_object extensions
41 #include "framebuffer.h"
42 #include "glformats.h"
45 #include "multisample.h"
47 #include "renderbuffer.h"
56 * None of the GL_EXT_framebuffer_object functions are compiled into
63 * When glGenRender/FramebuffersEXT() is called we insert pointers to
64 * these placeholder objects into the hash table.
65 * Later, when the object ID is first bound, we replace the placeholder
66 * with the real frame/renderbuffer.
68 static struct gl_framebuffer DummyFramebuffer
;
69 static struct gl_renderbuffer DummyRenderbuffer
;
71 /* We bind this framebuffer when applications pass a NULL
72 * drawable/surface in make current. */
73 static struct gl_framebuffer IncompleteFramebuffer
;
77 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
83 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
90 _mesa_init_fbobjects(struct gl_context
*ctx
)
92 mtx_init(&DummyFramebuffer
.Mutex
, mtx_plain
);
93 mtx_init(&DummyRenderbuffer
.Mutex
, mtx_plain
);
94 mtx_init(&IncompleteFramebuffer
.Mutex
, mtx_plain
);
95 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
96 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
97 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 struct gl_framebuffer
*
101 _mesa_get_incomplete_framebuffer(void)
103 return &IncompleteFramebuffer
;
107 * Helper routine for getting a gl_renderbuffer.
109 struct gl_renderbuffer
*
110 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
112 struct gl_renderbuffer
*rb
;
117 rb
= (struct gl_renderbuffer
*)
118 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
124 * A convenience function for direct state access that throws
125 * GL_INVALID_OPERATION if the renderbuffer doesn't exist.
127 struct gl_renderbuffer
*
128 _mesa_lookup_renderbuffer_err(struct gl_context
*ctx
, GLuint id
,
131 struct gl_renderbuffer
*rb
;
133 rb
= _mesa_lookup_renderbuffer(ctx
, id
);
134 if (!rb
|| rb
== &DummyRenderbuffer
) {
135 _mesa_error(ctx
, GL_INVALID_OPERATION
,
136 "%s(non-existent renderbuffer %u)", func
, id
);
145 * Helper routine for getting a gl_framebuffer.
147 struct gl_framebuffer
*
148 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
150 struct gl_framebuffer
*fb
;
155 fb
= (struct gl_framebuffer
*)
156 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
162 * A convenience function for direct state access that throws
163 * GL_INVALID_OPERATION if the framebuffer doesn't exist.
165 struct gl_framebuffer
*
166 _mesa_lookup_framebuffer_err(struct gl_context
*ctx
, GLuint id
,
169 struct gl_framebuffer
*fb
;
171 fb
= _mesa_lookup_framebuffer(ctx
, id
);
172 if (!fb
|| fb
== &DummyFramebuffer
) {
173 _mesa_error(ctx
, GL_INVALID_OPERATION
,
174 "%s(non-existent framebuffer %u)", func
, id
);
183 * Mark the given framebuffer as invalid. This will force the
184 * test for framebuffer completeness to be done before the framebuffer
188 invalidate_framebuffer(struct gl_framebuffer
*fb
)
190 fb
->_Status
= 0; /* "indeterminate" */
195 * Return the gl_framebuffer object which corresponds to the given
196 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
197 * Check support for GL_EXT_framebuffer_blit to determine if certain
199 * \return gl_framebuffer pointer or NULL if target is illegal
201 static struct gl_framebuffer
*
202 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
204 bool have_fb_blit
= _mesa_is_gles3(ctx
) || _mesa_is_desktop_gl(ctx
);
206 case GL_DRAW_FRAMEBUFFER
:
207 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
208 case GL_READ_FRAMEBUFFER
:
209 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
210 case GL_FRAMEBUFFER_EXT
:
211 return ctx
->DrawBuffer
;
219 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
220 * gl_renderbuffer_attachment object.
221 * This function is only used for user-created FB objects, not the
222 * default / window-system FB object.
223 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
224 * the depth buffer attachment point.
226 static struct gl_renderbuffer_attachment
*
227 get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
232 assert(_mesa_is_user_fbo(fb
));
234 switch (attachment
) {
235 case GL_COLOR_ATTACHMENT0_EXT
:
236 case GL_COLOR_ATTACHMENT1_EXT
:
237 case GL_COLOR_ATTACHMENT2_EXT
:
238 case GL_COLOR_ATTACHMENT3_EXT
:
239 case GL_COLOR_ATTACHMENT4_EXT
:
240 case GL_COLOR_ATTACHMENT5_EXT
:
241 case GL_COLOR_ATTACHMENT6_EXT
:
242 case GL_COLOR_ATTACHMENT7_EXT
:
243 case GL_COLOR_ATTACHMENT8_EXT
:
244 case GL_COLOR_ATTACHMENT9_EXT
:
245 case GL_COLOR_ATTACHMENT10_EXT
:
246 case GL_COLOR_ATTACHMENT11_EXT
:
247 case GL_COLOR_ATTACHMENT12_EXT
:
248 case GL_COLOR_ATTACHMENT13_EXT
:
249 case GL_COLOR_ATTACHMENT14_EXT
:
250 case GL_COLOR_ATTACHMENT15_EXT
:
251 /* Only OpenGL ES 1.x forbids color attachments other than
252 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
255 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
256 if (i
>= ctx
->Const
.MaxColorAttachments
257 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
260 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
261 case GL_DEPTH_STENCIL_ATTACHMENT
:
262 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
265 case GL_DEPTH_ATTACHMENT_EXT
:
266 return &fb
->Attachment
[BUFFER_DEPTH
];
267 case GL_STENCIL_ATTACHMENT_EXT
:
268 return &fb
->Attachment
[BUFFER_STENCIL
];
276 * As above, but only used for getting attachments of the default /
277 * window-system framebuffer (not user-created framebuffer objects).
279 static struct gl_renderbuffer_attachment
*
280 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
283 assert(_mesa_is_winsys_fbo(fb
));
285 if (_mesa_is_gles3(ctx
)) {
286 assert(attachment
== GL_BACK
||
287 attachment
== GL_DEPTH
||
288 attachment
== GL_STENCIL
);
289 switch (attachment
) {
291 /* Since there is no stereo rendering in ES 3.0, only return the
294 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
295 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
296 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
298 return &fb
->Attachment
[BUFFER_DEPTH
];
300 return &fb
->Attachment
[BUFFER_STENCIL
];
304 switch (attachment
) {
306 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
308 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
310 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
312 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
314 if (fb
->Visual
.numAuxBuffers
== 1) {
315 return &fb
->Attachment
[BUFFER_AUX0
];
319 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
321 * "If the default framebuffer is bound to target, then attachment must
322 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
323 * identifying a color buffer; DEPTH, identifying the depth buffer; or
324 * STENCIL, identifying the stencil buffer."
326 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
327 * language. However, revision #33 of the ARB_framebuffer_object spec
330 * "If the default framebuffer is bound to <target>, then <attachment>
331 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
332 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
333 * depth buffer, or the stencil buffer, and <pname> may be
334 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
335 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
337 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
338 * from glext.h, so shipping apps should not use those values.
340 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
341 * support queries of the window system FBO.
344 return &fb
->Attachment
[BUFFER_DEPTH
];
346 return &fb
->Attachment
[BUFFER_STENCIL
];
355 * Remove any texture or renderbuffer attached to the given attachment
356 * point. Update reference counts, etc.
359 remove_attachment(struct gl_context
*ctx
,
360 struct gl_renderbuffer_attachment
*att
)
362 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
364 /* tell driver that we're done rendering to this texture. */
365 if (rb
&& rb
->NeedsFinishRenderTexture
)
366 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
368 if (att
->Type
== GL_TEXTURE
) {
369 assert(att
->Texture
);
370 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
371 assert(!att
->Texture
);
373 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
374 assert(!att
->Texture
);
375 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
376 assert(!att
->Renderbuffer
);
379 att
->Complete
= GL_TRUE
;
383 * Verify a couple error conditions that will lead to an incomplete FBO and
384 * may cause problems for the driver's RenderTexture path.
387 driver_RenderTexture_is_safe(const struct gl_renderbuffer_attachment
*att
)
389 const struct gl_texture_image
*const texImage
=
390 att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
392 if (texImage
->Width
== 0 || texImage
->Height
== 0 || texImage
->Depth
== 0)
395 if ((texImage
->TexObject
->Target
== GL_TEXTURE_1D_ARRAY
396 && att
->Zoffset
>= texImage
->Height
)
397 || (texImage
->TexObject
->Target
!= GL_TEXTURE_1D_ARRAY
398 && att
->Zoffset
>= texImage
->Depth
))
405 * Create a renderbuffer which will be set up by the driver to wrap the
406 * texture image slice.
408 * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get
409 * to share most of their framebuffer rendering code between winsys,
410 * renderbuffer, and texture attachments.
412 * The allocated renderbuffer uses a non-zero Name so that drivers can check
413 * it for determining vertical orientation, but we use ~0 to make it fairly
414 * unambiguous with actual user (non-texture) renderbuffers.
417 _mesa_update_texture_renderbuffer(struct gl_context
*ctx
,
418 struct gl_framebuffer
*fb
,
419 struct gl_renderbuffer_attachment
*att
)
421 struct gl_texture_image
*texImage
;
422 struct gl_renderbuffer
*rb
;
424 texImage
= att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
426 rb
= att
->Renderbuffer
;
428 rb
= ctx
->Driver
.NewRenderbuffer(ctx
, ~0);
430 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
433 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
435 /* This can't get called on a texture renderbuffer, so set it to NULL
436 * for clarity compared to user renderbuffers.
438 rb
->AllocStorage
= NULL
;
440 rb
->NeedsFinishRenderTexture
= ctx
->Driver
.FinishRenderTexture
!= NULL
;
446 rb
->_BaseFormat
= texImage
->_BaseFormat
;
447 rb
->Format
= texImage
->TexFormat
;
448 rb
->InternalFormat
= texImage
->InternalFormat
;
449 rb
->Width
= texImage
->Width2
;
450 rb
->Height
= texImage
->Height2
;
451 rb
->Depth
= texImage
->Depth2
;
452 rb
->NumSamples
= texImage
->NumSamples
;
453 rb
->TexImage
= texImage
;
455 if (driver_RenderTexture_is_safe(att
))
456 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
460 * Bind a texture object to an attachment point.
461 * The previous binding, if any, will be removed first.
464 set_texture_attachment(struct gl_context
*ctx
,
465 struct gl_framebuffer
*fb
,
466 struct gl_renderbuffer_attachment
*att
,
467 struct gl_texture_object
*texObj
,
468 GLenum texTarget
, GLuint level
, GLuint layer
,
471 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
473 if (rb
&& rb
->NeedsFinishRenderTexture
)
474 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
476 if (att
->Texture
== texObj
) {
477 /* re-attaching same texture */
478 assert(att
->Type
== GL_TEXTURE
);
482 remove_attachment(ctx
, att
);
483 att
->Type
= GL_TEXTURE
;
484 assert(!att
->Texture
);
485 _mesa_reference_texobj(&att
->Texture
, texObj
);
487 invalidate_framebuffer(fb
);
489 /* always update these fields */
490 att
->TextureLevel
= level
;
491 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
492 att
->Zoffset
= layer
;
493 att
->Layered
= layered
;
494 att
->Complete
= GL_FALSE
;
496 _mesa_update_texture_renderbuffer(ctx
, fb
, att
);
501 * Bind a renderbuffer to an attachment point.
502 * The previous binding, if any, will be removed first.
505 set_renderbuffer_attachment(struct gl_context
*ctx
,
506 struct gl_renderbuffer_attachment
*att
,
507 struct gl_renderbuffer
*rb
)
509 /* XXX check if re-doing same attachment, exit early */
510 remove_attachment(ctx
, att
);
511 att
->Type
= GL_RENDERBUFFER_EXT
;
512 att
->Texture
= NULL
; /* just to be safe */
513 att
->Layered
= GL_FALSE
;
514 att
->Complete
= GL_FALSE
;
515 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
520 * Fallback for ctx->Driver.FramebufferRenderbuffer()
521 * Attach a renderbuffer object to a framebuffer object.
524 _mesa_FramebufferRenderbuffer_sw(struct gl_context
*ctx
,
525 struct gl_framebuffer
*fb
,
527 struct gl_renderbuffer
*rb
)
529 struct gl_renderbuffer_attachment
*att
;
531 mtx_lock(&fb
->Mutex
);
533 att
= get_attachment(ctx
, fb
, attachment
);
536 set_renderbuffer_attachment(ctx
, att
, rb
);
537 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
538 /* do stencil attachment here (depth already done above) */
539 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
541 set_renderbuffer_attachment(ctx
, att
, rb
);
543 rb
->AttachedAnytime
= GL_TRUE
;
546 remove_attachment(ctx
, att
);
547 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
548 /* detach stencil (depth was detached above) */
549 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
551 remove_attachment(ctx
, att
);
555 invalidate_framebuffer(fb
);
557 mtx_unlock(&fb
->Mutex
);
562 * Fallback for ctx->Driver.ValidateFramebuffer()
563 * Check if the renderbuffer's formats are supported by the software
565 * Drivers should probably override this.
568 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
571 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
572 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
574 switch (rb
->_BaseFormat
) {
576 case GL_LUMINANCE_ALPHA
:
581 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
585 switch (rb
->Format
) {
586 /* XXX This list is likely incomplete. */
587 case MESA_FORMAT_R9G9B9E5_FLOAT
:
588 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
591 /* render buffer format is supported by software rendering */
600 * Return true if the framebuffer has a combined depth/stencil
601 * renderbuffer attached.
604 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
606 const struct gl_renderbuffer_attachment
*depth
=
607 &fb
->Attachment
[BUFFER_DEPTH
];
608 const struct gl_renderbuffer_attachment
*stencil
=
609 &fb
->Attachment
[BUFFER_STENCIL
];
611 if (depth
->Type
== stencil
->Type
) {
612 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
613 depth
->Renderbuffer
== stencil
->Renderbuffer
)
616 if (depth
->Type
== GL_TEXTURE
&&
617 depth
->Texture
== stencil
->Texture
)
629 att_incomplete(const char *msg
)
631 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
632 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
641 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
643 static GLuint msg_id
;
645 _mesa_gl_debug(ctx
, &msg_id
,
646 MESA_DEBUG_SOURCE_API
,
647 MESA_DEBUG_TYPE_OTHER
,
648 MESA_DEBUG_SEVERITY_MEDIUM
,
649 "FBO incomplete: %s [%d]\n", msg
, index
);
651 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
652 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
658 * Is the given base format a legal format for a color renderbuffer?
661 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
663 switch (baseFormat
) {
668 case GL_LUMINANCE_ALPHA
:
671 return ctx
->API
== API_OPENGL_COMPAT
&&
672 ctx
->Extensions
.ARB_framebuffer_object
;
675 return ctx
->Extensions
.ARB_texture_rg
;
683 * Is the given base format a legal format for a color renderbuffer?
686 is_format_color_renderable(const struct gl_context
*ctx
, mesa_format format
,
687 GLenum internalFormat
)
689 const GLenum baseFormat
=
690 _mesa_get_format_base_format(format
);
693 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
694 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
698 /* Reject additional cases for GLES */
699 switch (internalFormat
) {
719 if (format
== MESA_FORMAT_B10G10R10A2_UNORM
&&
720 internalFormat
!= GL_RGB10_A2
) {
729 * Is the given base format a legal format for a depth/stencil renderbuffer?
732 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
734 switch (baseFormat
) {
735 case GL_DEPTH_COMPONENT
:
736 case GL_DEPTH_STENCIL_EXT
:
745 * Test if an attachment point is complete and update its Complete field.
746 * \param format if GL_COLOR, this is a color attachment point,
747 * if GL_DEPTH, this is a depth component attachment point,
748 * if GL_STENCIL, this is a stencil component attachment point.
751 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
752 struct gl_renderbuffer_attachment
*att
)
754 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
756 /* assume complete */
757 att
->Complete
= GL_TRUE
;
759 /* Look for reasons why the attachment might be incomplete */
760 if (att
->Type
== GL_TEXTURE
) {
761 const struct gl_texture_object
*texObj
= att
->Texture
;
762 struct gl_texture_image
*texImage
;
766 att_incomplete("no texobj");
767 att
->Complete
= GL_FALSE
;
771 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
773 att_incomplete("no teximage");
774 att
->Complete
= GL_FALSE
;
777 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
778 att_incomplete("teximage width/height=0");
779 att
->Complete
= GL_FALSE
;
783 switch (texObj
->Target
) {
785 if (att
->Zoffset
>= texImage
->Depth
) {
786 att_incomplete("bad z offset");
787 att
->Complete
= GL_FALSE
;
791 case GL_TEXTURE_1D_ARRAY
:
792 if (att
->Zoffset
>= texImage
->Height
) {
793 att_incomplete("bad 1D-array layer");
794 att
->Complete
= GL_FALSE
;
798 case GL_TEXTURE_2D_ARRAY
:
799 if (att
->Zoffset
>= texImage
->Depth
) {
800 att_incomplete("bad 2D-array layer");
801 att
->Complete
= GL_FALSE
;
805 case GL_TEXTURE_CUBE_MAP_ARRAY
:
806 if (att
->Zoffset
>= texImage
->Depth
) {
807 att_incomplete("bad cube-array layer");
808 att
->Complete
= GL_FALSE
;
814 baseFormat
= texImage
->_BaseFormat
;
816 if (format
== GL_COLOR
) {
817 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
818 att_incomplete("bad format");
819 att
->Complete
= GL_FALSE
;
822 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
823 att_incomplete("compressed internalformat");
824 att
->Complete
= GL_FALSE
;
828 /* OES_texture_float allows creation and use of floating point
829 * textures with GL_FLOAT, GL_HALF_FLOAT but it does not allow
830 * these textures to be used as a render target, this is done via
831 * GL_EXT_color_buffer(_half)_float with set of new sized types.
833 if (_mesa_is_gles(ctx
) && (texImage
->TexObject
->_IsFloat
||
834 texImage
->TexObject
->_IsHalfFloat
)) {
835 att_incomplete("bad internal format");
836 att
->Complete
= GL_FALSE
;
840 else if (format
== GL_DEPTH
) {
841 if (baseFormat
== GL_DEPTH_COMPONENT
) {
844 else if (ctx
->Extensions
.ARB_depth_texture
&&
845 baseFormat
== GL_DEPTH_STENCIL
) {
849 att
->Complete
= GL_FALSE
;
850 att_incomplete("bad depth format");
855 assert(format
== GL_STENCIL
);
856 if (ctx
->Extensions
.ARB_depth_texture
&&
857 baseFormat
== GL_DEPTH_STENCIL
) {
859 } else if (ctx
->Extensions
.ARB_texture_stencil8
&&
860 baseFormat
== GL_STENCIL_INDEX
) {
863 /* no such thing as stencil-only textures */
864 att_incomplete("illegal stencil texture");
865 att
->Complete
= GL_FALSE
;
870 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
871 const GLenum baseFormat
= att
->Renderbuffer
->_BaseFormat
;
873 assert(att
->Renderbuffer
);
874 if (!att
->Renderbuffer
->InternalFormat
||
875 att
->Renderbuffer
->Width
< 1 ||
876 att
->Renderbuffer
->Height
< 1) {
877 att_incomplete("0x0 renderbuffer");
878 att
->Complete
= GL_FALSE
;
881 if (format
== GL_COLOR
) {
882 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
883 att_incomplete("bad renderbuffer color format");
884 att
->Complete
= GL_FALSE
;
888 else if (format
== GL_DEPTH
) {
889 if (baseFormat
== GL_DEPTH_COMPONENT
) {
892 else if (baseFormat
== GL_DEPTH_STENCIL
) {
896 att_incomplete("bad renderbuffer depth format");
897 att
->Complete
= GL_FALSE
;
902 assert(format
== GL_STENCIL
);
903 if (baseFormat
== GL_STENCIL_INDEX
||
904 baseFormat
== GL_DEPTH_STENCIL
) {
908 att
->Complete
= GL_FALSE
;
909 att_incomplete("bad renderbuffer stencil format");
915 assert(att
->Type
== GL_NONE
);
923 * Test if the given framebuffer object is complete and update its
924 * Status field with the results.
925 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
926 * driver to make hardware-specific validation/completeness checks.
927 * Also update the framebuffer's Width and Height fields if the
928 * framebuffer is complete.
931 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
932 struct gl_framebuffer
*fb
)
935 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
936 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
937 GLint numSamples
= -1;
938 GLint fixedSampleLocations
= -1;
941 /* Covers max_layer_count, is_layered, and layer_tex_target */
942 bool layer_info_valid
= false;
943 GLuint max_layer_count
= 0, att_layer_count
;
944 bool is_layered
= false;
945 GLenum layer_tex_target
= 0;
946 bool has_depth_attachment
= false;
947 bool has_stencil_attachment
= false;
949 assert(_mesa_is_user_fbo(fb
));
951 /* we're changing framebuffer fields here */
952 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
957 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
958 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
959 fb
->_HasAttachments
= true;
961 /* Start at -2 to more easily loop over all attachment points.
966 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
967 struct gl_renderbuffer_attachment
*att
;
969 mesa_format attFormat
;
970 GLenum att_tex_target
= GL_NONE
;
973 * XXX for ARB_fbo, only check color buffers that are named by
974 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
977 /* check for attachment completeness
980 att
= &fb
->Attachment
[BUFFER_DEPTH
];
981 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
982 if (!att
->Complete
) {
983 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
984 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
986 } else if (att
->Type
!= GL_NONE
) {
987 has_depth_attachment
= true;
991 att
= &fb
->Attachment
[BUFFER_STENCIL
];
992 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
993 if (!att
->Complete
) {
994 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
995 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
997 } else if (att
->Type
!= GL_NONE
) {
998 has_stencil_attachment
= true;
1002 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
1003 test_attachment_completeness(ctx
, GL_COLOR
, att
);
1004 if (!att
->Complete
) {
1005 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
1006 fbo_incomplete(ctx
, "color attachment incomplete", i
);
1011 /* get width, height, format of the renderbuffer/texture
1013 if (att
->Type
== GL_TEXTURE
) {
1014 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
1015 att_tex_target
= att
->Texture
->Target
;
1016 minWidth
= MIN2(minWidth
, texImg
->Width
);
1017 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
1018 minHeight
= MIN2(minHeight
, texImg
->Height
);
1019 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
1020 f
= texImg
->_BaseFormat
;
1021 attFormat
= texImg
->TexFormat
;
1024 if (!is_format_color_renderable(ctx
, attFormat
,
1025 texImg
->InternalFormat
) &&
1026 !is_legal_depth_format(ctx
, f
) &&
1027 f
!= GL_STENCIL_INDEX
) {
1028 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
;
1029 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
1034 numSamples
= texImg
->NumSamples
;
1035 else if (numSamples
!= texImg
->NumSamples
) {
1036 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1037 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1041 if (fixedSampleLocations
< 0)
1042 fixedSampleLocations
= texImg
->FixedSampleLocations
;
1043 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
1044 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1045 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1049 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1050 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
1051 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
1052 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
1053 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
1054 f
= att
->Renderbuffer
->InternalFormat
;
1055 attFormat
= att
->Renderbuffer
->Format
;
1059 numSamples
= att
->Renderbuffer
->NumSamples
;
1060 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
1061 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1062 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1066 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1067 if (fixedSampleLocations
< 0)
1068 fixedSampleLocations
= GL_TRUE
;
1069 else if (fixedSampleLocations
!= GL_TRUE
) {
1070 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1071 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1076 assert(att
->Type
== GL_NONE
);
1080 /* check if integer color */
1081 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1083 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1085 GLenum type
= _mesa_get_format_datatype(attFormat
);
1087 fb
->_AllColorBuffersFixedPoint
=
1088 fb
->_AllColorBuffersFixedPoint
&&
1089 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1091 fb
->_HasSNormOrFloatColorBuffer
=
1092 fb
->_HasSNormOrFloatColorBuffer
||
1093 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1096 /* Error-check width, height, format */
1097 if (numImages
== 1) {
1104 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1105 /* check that width, height, format are same */
1106 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1107 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1108 fbo_incomplete(ctx
, "width or height mismatch", -1);
1111 /* check that all color buffers are the same format */
1112 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1113 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1114 fbo_incomplete(ctx
, "format mismatch", -1);
1120 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1122 if (att
->Type
== GL_RENDERBUFFER
&&
1123 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1124 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1125 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1129 /* Check that layered rendering is consistent. */
1131 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1132 att_layer_count
= 6;
1133 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1134 att_layer_count
= att
->Renderbuffer
->Height
;
1136 att_layer_count
= att
->Renderbuffer
->Depth
;
1138 att_layer_count
= 0;
1140 if (!layer_info_valid
) {
1141 is_layered
= att
->Layered
;
1142 max_layer_count
= att_layer_count
;
1143 layer_tex_target
= att_tex_target
;
1144 layer_info_valid
= true;
1145 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1146 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1147 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1149 } else if (is_layered
!= att
->Layered
) {
1150 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1152 "framebuffer attachment layer mode is inconsistent",
1155 } else if (att_layer_count
> max_layer_count
) {
1156 max_layer_count
= att_layer_count
;
1160 * The extension GL_ARB_framebuffer_no_attachments places additional
1161 * requirement on each attachment. Those additional requirements are
1162 * tighter that those of previous versions of GL. In interest of better
1163 * compatibility, we will not enforce these restrictions. For the record
1164 * those additional restrictions are quoted below:
1166 * "The width and height of image are greater than zero and less than or
1167 * equal to the values of the implementation-dependent limits
1168 * MAX_FRAMEBUFFER_WIDTH and MAX_FRAMEBUFFER_HEIGHT, respectively."
1170 * "If <image> is a three-dimensional texture or a one- or two-dimensional
1171 * array texture and the attachment is layered, the depth or layer count
1172 * of the texture is less than or equal to the implementation-dependent
1173 * limit MAX_FRAMEBUFFER_LAYERS."
1175 * "If image has multiple samples, its sample count is less than or equal
1176 * to the value of the implementation-dependent limit
1177 * MAX_FRAMEBUFFER_SAMPLES."
1179 * The same requirements are also in place for GL 4.5,
1180 * Section 9.4.1 "Framebuffer Attachment Completeness", pg 310-311
1184 fb
->MaxNumLayers
= max_layer_count
;
1186 if (numImages
== 0) {
1187 fb
->_HasAttachments
= false;
1189 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1190 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1191 fbo_incomplete(ctx
, "no attachments", -1);
1195 if (fb
->DefaultGeometry
.Width
== 0 || fb
->DefaultGeometry
.Height
== 0) {
1196 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1197 fbo_incomplete(ctx
, "no attachments and default width or height is 0", -1);
1202 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1203 /* Check that all DrawBuffers are present */
1204 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1205 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1206 const struct gl_renderbuffer_attachment
*att
1207 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1209 if (att
->Type
== GL_NONE
) {
1210 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1211 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1217 /* Check that the ReadBuffer is present */
1218 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1219 const struct gl_renderbuffer_attachment
*att
1220 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1222 if (att
->Type
== GL_NONE
) {
1223 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1224 fbo_incomplete(ctx
, "missing readbuffer", -1);
1230 /* The OpenGL ES3 spec, in chapter 9.4. FRAMEBUFFER COMPLETENESS, says:
1232 * "Depth and stencil attachments, if present, are the same image."
1234 * This restriction is not present in the OpenGL ES2 spec.
1236 if (_mesa_is_gles3(ctx
) &&
1237 has_stencil_attachment
&& has_depth_attachment
&&
1238 !_mesa_has_depthstencil_combined(fb
)) {
1239 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1240 fbo_incomplete(ctx
, "Depth and stencil attachments must be the same image", -1);
1244 /* Provisionally set status = COMPLETE ... */
1245 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1247 /* ... but the driver may say the FB is incomplete.
1248 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1251 if (ctx
->Driver
.ValidateFramebuffer
) {
1252 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1253 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1254 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1260 * Note that if ARB_framebuffer_object is supported and the attached
1261 * renderbuffers/textures are different sizes, the framebuffer
1262 * width/height will be set to the smallest width/height.
1264 if (numImages
!= 0) {
1265 fb
->Width
= minWidth
;
1266 fb
->Height
= minHeight
;
1269 /* finally, update the visual info for the framebuffer */
1270 _mesa_update_framebuffer_visual(ctx
, fb
);
1274 GLboolean GLAPIENTRY
1275 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1277 GET_CURRENT_CONTEXT(ctx
);
1278 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1280 struct gl_renderbuffer
*rb
=
1281 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1282 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1289 static struct gl_renderbuffer
*
1290 allocate_renderbuffer(struct gl_context
*ctx
, GLuint renderbuffer
,
1293 struct gl_renderbuffer
*newRb
;
1295 /* create new renderbuffer object */
1296 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1298 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1301 assert(newRb
->AllocStorage
);
1302 mtx_lock(&ctx
->Shared
->Mutex
);
1303 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1304 newRb
->RefCount
= 1; /* referenced by hash table */
1305 mtx_unlock(&ctx
->Shared
->Mutex
);
1312 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1314 struct gl_renderbuffer
*newRb
;
1315 GET_CURRENT_CONTEXT(ctx
);
1317 if (target
!= GL_RENDERBUFFER_EXT
) {
1318 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1322 /* No need to flush here since the render buffer binding has no
1323 * effect on rendering state.
1327 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1328 if (newRb
== &DummyRenderbuffer
) {
1329 /* ID was reserved, but no real renderbuffer object made yet */
1332 else if (!newRb
&& !allow_user_names
) {
1333 /* All RB IDs must be Gen'd */
1334 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1339 newRb
= allocate_renderbuffer(ctx
, renderbuffer
, "glBindRenderbufferEXT");
1346 assert(newRb
!= &DummyRenderbuffer
);
1348 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1352 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1354 GET_CURRENT_CONTEXT(ctx
);
1356 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1357 * entry point, but they allow the use of user-generated names.
1359 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1363 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1365 /* This function should not be in the dispatch table for core profile /
1366 * OpenGL 3.1, so execution should never get here in those cases -- no
1367 * need for an explicit test.
1369 bind_renderbuffer(target
, renderbuffer
, true);
1373 * ARB_framebuffer_no_attachment - Application passes requested param's
1374 * here. NOTE: NumSamples requested need not be _NumSamples which is
1375 * what the hw supports.
1378 framebuffer_parameteri(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1379 GLenum pname
, GLint param
, const char *func
)
1382 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1383 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferWidth
)
1384 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1386 fb
->DefaultGeometry
.Width
= param
;
1388 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1389 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferHeight
)
1390 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1392 fb
->DefaultGeometry
.Height
= param
;
1394 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1396 * According to the OpenGL ES 3.1 specification section 9.2.1, the
1397 * GL_FRAMEBUFFER_DEFAULT_LAYERS parameter name is not supported.
1399 if (_mesa_is_gles31(ctx
)) {
1400 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1403 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferLayers
)
1404 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1406 fb
->DefaultGeometry
.Layers
= param
;
1408 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1409 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferSamples
)
1410 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1412 fb
->DefaultGeometry
.NumSamples
= param
;
1414 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1415 fb
->DefaultGeometry
.FixedSampleLocations
= param
;
1418 _mesa_error(ctx
, GL_INVALID_ENUM
,
1419 "%s(pname=0x%x)", func
, pname
);
1422 invalidate_framebuffer(fb
);
1423 ctx
->NewState
|= _NEW_BUFFERS
;
1427 _mesa_FramebufferParameteri(GLenum target
, GLenum pname
, GLint param
)
1429 GET_CURRENT_CONTEXT(ctx
);
1430 struct gl_framebuffer
*fb
;
1432 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1433 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1434 "glFramebufferParameteriv not supported "
1435 "(ARB_framebuffer_no_attachments not implemented)");
1439 fb
= get_framebuffer_target(ctx
, target
);
1441 _mesa_error(ctx
, GL_INVALID_ENUM
,
1442 "glFramebufferParameteri(target=0x%x)", target
);
1446 /* check framebuffer binding */
1447 if (_mesa_is_winsys_fbo(fb
)) {
1448 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1449 "glFramebufferParameteri");
1453 framebuffer_parameteri(ctx
, fb
, pname
, param
, "glFramebufferParameteri");
1457 get_framebuffer_parameteriv(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1458 GLenum pname
, GLint
*params
, const char *func
)
1461 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1462 *params
= fb
->DefaultGeometry
.Width
;
1464 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1465 *params
= fb
->DefaultGeometry
.Height
;
1467 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1469 * According to the OpenGL ES 3.1 specification section 9.2.3, the
1470 * GL_FRAMEBUFFER_LAYERS parameter name is not supported.
1472 if (_mesa_is_gles31(ctx
)) {
1473 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1476 *params
= fb
->DefaultGeometry
.Layers
;
1478 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1479 *params
= fb
->DefaultGeometry
.NumSamples
;
1481 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1482 *params
= fb
->DefaultGeometry
.FixedSampleLocations
;
1485 _mesa_error(ctx
, GL_INVALID_ENUM
,
1486 "%s(pname=0x%x)", func
, pname
);
1491 _mesa_GetFramebufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1493 GET_CURRENT_CONTEXT(ctx
);
1494 struct gl_framebuffer
*fb
;
1496 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1497 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1498 "glGetFramebufferParameteriv not supported "
1499 "(ARB_framebuffer_no_attachments not implemented)");
1503 fb
= get_framebuffer_target(ctx
, target
);
1505 _mesa_error(ctx
, GL_INVALID_ENUM
,
1506 "glGetFramebufferParameteriv(target=0x%x)", target
);
1510 /* check framebuffer binding */
1511 if (_mesa_is_winsys_fbo(fb
)) {
1512 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1513 "glGetFramebufferParameteriv");
1517 get_framebuffer_parameteriv(ctx
, fb
, pname
, params
,
1518 "glGetFramebufferParameteriv");
1523 * Remove the specified renderbuffer or texture from any attachment point in
1527 * \c true if the renderbuffer was detached from an attachment point. \c
1531 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1532 struct gl_framebuffer
*fb
,
1536 bool progress
= false;
1538 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1539 if (fb
->Attachment
[i
].Texture
== att
1540 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1541 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1546 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1547 * Completeness," of the OpenGL 3.1 spec says:
1549 * "Performing any of the following actions may change whether the
1550 * framebuffer is considered complete or incomplete:
1554 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1555 * containing an image that is attached to a framebuffer object
1556 * that is bound to the framebuffer."
1559 invalidate_framebuffer(fb
);
1566 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1569 GET_CURRENT_CONTEXT(ctx
);
1572 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteRenderbuffers(n < 0)");
1576 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1578 for (i
= 0; i
< n
; i
++) {
1579 if (renderbuffers
[i
] > 0) {
1580 struct gl_renderbuffer
*rb
;
1581 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1583 /* check if deleting currently bound renderbuffer object */
1584 if (rb
== ctx
->CurrentRenderbuffer
) {
1586 assert(rb
->RefCount
>= 2);
1587 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1590 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1591 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1592 * of the OpenGL 3.1 spec says:
1594 * "If a renderbuffer object is deleted while its image is
1595 * attached to one or more attachment points in the currently
1596 * bound framebuffer, then it is as if FramebufferRenderbuffer
1597 * had been called, with a renderbuffer of 0, for each
1598 * attachment point to which this image was attached in the
1599 * currently bound framebuffer. In other words, this
1600 * renderbuffer image is first detached from all attachment
1601 * points in the currently bound framebuffer. Note that the
1602 * renderbuffer image is specifically not detached from any
1603 * non-bound framebuffers. Detaching the image from any
1604 * non-bound framebuffers is the responsibility of the
1607 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1608 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1610 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1611 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1612 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1615 /* Remove from hash table immediately, to free the ID.
1616 * But the object will not be freed until it's no longer
1617 * referenced anywhere else.
1619 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1621 if (rb
!= &DummyRenderbuffer
) {
1622 /* no longer referenced by hash table */
1623 _mesa_reference_renderbuffer(&rb
, NULL
);
1631 create_render_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*renderbuffers
,
1634 const char *func
= dsa
? "glCreateRenderbuffers" : "glGenRenderbuffers";
1639 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n<0)", func
);
1646 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1648 for (i
= 0; i
< n
; i
++) {
1649 GLuint name
= first
+ i
;
1650 renderbuffers
[i
] = name
;
1653 allocate_renderbuffer(ctx
, name
, func
);
1655 /* insert a dummy renderbuffer into the hash table */
1656 mtx_lock(&ctx
->Shared
->Mutex
);
1657 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1658 mtx_unlock(&ctx
->Shared
->Mutex
);
1665 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1667 GET_CURRENT_CONTEXT(ctx
);
1668 create_render_buffers(ctx
, n
, renderbuffers
, false);
1673 _mesa_CreateRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1675 GET_CURRENT_CONTEXT(ctx
);
1676 create_render_buffers(ctx
, n
, renderbuffers
, true);
1681 * Given an internal format token for a render buffer, return the
1682 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1683 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1684 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1686 * This is similar to _mesa_base_tex_format() but the set of valid
1687 * internal formats is different.
1689 * Note that even if a format is determined to be legal here, validation
1690 * of the FBO may fail if the format is not supported by the driver/GPU.
1692 * \param internalFormat as passed to glRenderbufferStorage()
1693 * \return the base internal format, or 0 if internalFormat is illegal
1696 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1699 * Notes: some formats such as alpha, luminance, etc. were added
1700 * with GL_ARB_framebuffer_object.
1702 switch (internalFormat
) {
1708 return (ctx
->API
== API_OPENGL_COMPAT
&&
1709 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1713 case GL_LUMINANCE12
:
1714 case GL_LUMINANCE16
:
1715 return (ctx
->API
== API_OPENGL_COMPAT
&&
1716 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1717 case GL_LUMINANCE_ALPHA
:
1718 case GL_LUMINANCE4_ALPHA4
:
1719 case GL_LUMINANCE6_ALPHA2
:
1720 case GL_LUMINANCE8_ALPHA8
:
1721 case GL_LUMINANCE12_ALPHA4
:
1722 case GL_LUMINANCE12_ALPHA12
:
1723 case GL_LUMINANCE16_ALPHA16
:
1724 return (ctx
->API
== API_OPENGL_COMPAT
&&
1725 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1729 case GL_INTENSITY12
:
1730 case GL_INTENSITY16
:
1731 return (ctx
->API
== API_OPENGL_COMPAT
&&
1732 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1742 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1744 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1753 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1755 case GL_SRGB8_ALPHA8_EXT
:
1756 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1757 case GL_STENCIL_INDEX
:
1758 case GL_STENCIL_INDEX1_EXT
:
1759 case GL_STENCIL_INDEX4_EXT
:
1760 case GL_STENCIL_INDEX16_EXT
:
1761 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1762 * OpenGL ES, but Mesa does not currently support them.
1764 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1765 case GL_STENCIL_INDEX8_EXT
:
1766 return GL_STENCIL_INDEX
;
1767 case GL_DEPTH_COMPONENT
:
1768 case GL_DEPTH_COMPONENT32
:
1769 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1770 case GL_DEPTH_COMPONENT16
:
1771 case GL_DEPTH_COMPONENT24
:
1772 return GL_DEPTH_COMPONENT
;
1773 case GL_DEPTH_STENCIL
:
1774 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1775 case GL_DEPTH24_STENCIL8
:
1776 return GL_DEPTH_STENCIL
;
1777 case GL_DEPTH_COMPONENT32F
:
1778 return ctx
->Version
>= 30
1779 || (ctx
->API
== API_OPENGL_COMPAT
&&
1780 ctx
->Extensions
.ARB_depth_buffer_float
)
1781 ? GL_DEPTH_COMPONENT
: 0;
1782 case GL_DEPTH32F_STENCIL8
:
1783 return ctx
->Version
>= 30
1784 || (ctx
->API
== API_OPENGL_COMPAT
&&
1785 ctx
->Extensions
.ARB_depth_buffer_float
)
1786 ? GL_DEPTH_STENCIL
: 0;
1789 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1792 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1796 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1799 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1801 /* signed normalized texture formats */
1805 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1810 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1814 case GL_RGB16_SNORM
:
1815 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1818 case GL_RGBA8_SNORM
:
1819 case GL_RGBA16_SNORM
:
1820 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1822 case GL_ALPHA_SNORM
:
1823 case GL_ALPHA8_SNORM
:
1824 case GL_ALPHA16_SNORM
:
1825 return ctx
->API
== API_OPENGL_COMPAT
&&
1826 ctx
->Extensions
.EXT_texture_snorm
&&
1827 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1828 case GL_LUMINANCE_SNORM
:
1829 case GL_LUMINANCE8_SNORM
:
1830 case GL_LUMINANCE16_SNORM
:
1831 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1833 case GL_LUMINANCE_ALPHA_SNORM
:
1834 case GL_LUMINANCE8_ALPHA8_SNORM
:
1835 case GL_LUMINANCE16_ALPHA16_SNORM
:
1836 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1837 ? GL_LUMINANCE_ALPHA
: 0;
1838 case GL_INTENSITY_SNORM
:
1839 case GL_INTENSITY8_SNORM
:
1840 case GL_INTENSITY16_SNORM
:
1841 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1846 return ((_mesa_is_desktop_gl(ctx
) &&
1847 ctx
->Extensions
.ARB_texture_rg
&&
1848 ctx
->Extensions
.ARB_texture_float
) ||
1849 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1853 return ((_mesa_is_desktop_gl(ctx
) &&
1854 ctx
->Extensions
.ARB_texture_rg
&&
1855 ctx
->Extensions
.ARB_texture_float
) ||
1856 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1860 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1864 return ((_mesa_is_desktop_gl(ctx
) &&
1865 ctx
->Extensions
.ARB_texture_float
) ||
1866 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1868 case GL_ALPHA16F_ARB
:
1869 case GL_ALPHA32F_ARB
:
1870 return ctx
->API
== API_OPENGL_COMPAT
&&
1871 ctx
->Extensions
.ARB_texture_float
&&
1872 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1873 case GL_LUMINANCE16F_ARB
:
1874 case GL_LUMINANCE32F_ARB
:
1875 return ctx
->API
== API_OPENGL_COMPAT
&&
1876 ctx
->Extensions
.ARB_texture_float
&&
1877 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1878 case GL_LUMINANCE_ALPHA16F_ARB
:
1879 case GL_LUMINANCE_ALPHA32F_ARB
:
1880 return ctx
->API
== API_OPENGL_COMPAT
&&
1881 ctx
->Extensions
.ARB_texture_float
&&
1882 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1883 case GL_INTENSITY16F_ARB
:
1884 case GL_INTENSITY32F_ARB
:
1885 return ctx
->API
== API_OPENGL_COMPAT
&&
1886 ctx
->Extensions
.ARB_texture_float
&&
1887 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1888 case GL_R11F_G11F_B10F
:
1889 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1890 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1893 case GL_RGBA8UI_EXT
:
1894 case GL_RGBA16UI_EXT
:
1895 case GL_RGBA32UI_EXT
:
1897 case GL_RGBA16I_EXT
:
1898 case GL_RGBA32I_EXT
:
1899 return ctx
->Version
>= 30
1900 || (_mesa_is_desktop_gl(ctx
) &&
1901 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1904 case GL_RGB16UI_EXT
:
1905 case GL_RGB32UI_EXT
:
1909 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1917 return ctx
->Version
>= 30
1918 || (_mesa_is_desktop_gl(ctx
) &&
1919 ctx
->Extensions
.ARB_texture_rg
&&
1920 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1928 return ctx
->Version
>= 30
1929 || (_mesa_is_desktop_gl(ctx
) &&
1930 ctx
->Extensions
.ARB_texture_rg
&&
1931 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1933 case GL_INTENSITY8I_EXT
:
1934 case GL_INTENSITY8UI_EXT
:
1935 case GL_INTENSITY16I_EXT
:
1936 case GL_INTENSITY16UI_EXT
:
1937 case GL_INTENSITY32I_EXT
:
1938 case GL_INTENSITY32UI_EXT
:
1939 return ctx
->API
== API_OPENGL_COMPAT
&&
1940 ctx
->Extensions
.EXT_texture_integer
&&
1941 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1943 case GL_LUMINANCE8I_EXT
:
1944 case GL_LUMINANCE8UI_EXT
:
1945 case GL_LUMINANCE16I_EXT
:
1946 case GL_LUMINANCE16UI_EXT
:
1947 case GL_LUMINANCE32I_EXT
:
1948 case GL_LUMINANCE32UI_EXT
:
1949 return ctx
->API
== API_OPENGL_COMPAT
&&
1950 ctx
->Extensions
.EXT_texture_integer
&&
1951 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1953 case GL_LUMINANCE_ALPHA8I_EXT
:
1954 case GL_LUMINANCE_ALPHA8UI_EXT
:
1955 case GL_LUMINANCE_ALPHA16I_EXT
:
1956 case GL_LUMINANCE_ALPHA16UI_EXT
:
1957 case GL_LUMINANCE_ALPHA32I_EXT
:
1958 case GL_LUMINANCE_ALPHA32UI_EXT
:
1959 return ctx
->API
== API_OPENGL_COMPAT
&&
1960 ctx
->Extensions
.EXT_texture_integer
&&
1961 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1963 case GL_ALPHA8I_EXT
:
1964 case GL_ALPHA8UI_EXT
:
1965 case GL_ALPHA16I_EXT
:
1966 case GL_ALPHA16UI_EXT
:
1967 case GL_ALPHA32I_EXT
:
1968 case GL_ALPHA32UI_EXT
:
1969 return ctx
->API
== API_OPENGL_COMPAT
&&
1970 ctx
->Extensions
.EXT_texture_integer
&&
1971 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1974 return (_mesa_is_desktop_gl(ctx
) &&
1975 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1976 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1979 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1988 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1991 invalidate_rb(GLuint key
, void *data
, void *userData
)
1993 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1994 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1996 /* If this is a user-created FBO */
1997 if (_mesa_is_user_fbo(fb
)) {
1999 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2000 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2001 if (att
->Type
== GL_RENDERBUFFER
&&
2002 att
->Renderbuffer
== rb
) {
2003 /* Mark fb status as indeterminate to force re-validation */
2012 /** sentinal value, see below */
2013 #define NO_SAMPLES 1000
2016 _mesa_renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2017 GLenum internalFormat
, GLsizei width
,
2018 GLsizei height
, GLsizei samples
)
2020 const GLenum baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
2022 assert(baseFormat
!= 0);
2023 assert(width
>= 0 && width
<= (GLsizei
) ctx
->Const
.MaxRenderbufferSize
);
2024 assert(height
>= 0 && height
<= (GLsizei
) ctx
->Const
.MaxRenderbufferSize
);
2025 assert(samples
!= NO_SAMPLES
);
2027 assert(samples
> 0);
2028 assert(_mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
2029 internalFormat
, samples
) == GL_NO_ERROR
);
2032 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2034 if (rb
->InternalFormat
== internalFormat
&&
2035 rb
->Width
== (GLuint
) width
&&
2036 rb
->Height
== (GLuint
) height
&&
2037 rb
->NumSamples
== samples
) {
2038 /* no change in allocation needed */
2042 /* These MUST get set by the AllocStorage func */
2043 rb
->Format
= MESA_FORMAT_NONE
;
2044 rb
->NumSamples
= samples
;
2046 /* Now allocate the storage */
2047 assert(rb
->AllocStorage
);
2048 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
2049 /* No error - check/set fields now */
2050 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
2051 assert(rb
->Width
== (GLuint
) width
);
2052 assert(rb
->Height
== (GLuint
) height
);
2053 rb
->InternalFormat
= internalFormat
;
2054 rb
->_BaseFormat
= baseFormat
;
2055 assert(rb
->_BaseFormat
!= 0);
2058 /* Probably ran out of memory - clear the fields */
2061 rb
->Format
= MESA_FORMAT_NONE
;
2062 rb
->InternalFormat
= GL_NONE
;
2063 rb
->_BaseFormat
= GL_NONE
;
2067 /* Invalidate the framebuffers the renderbuffer is attached in. */
2068 if (rb
->AttachedAnytime
) {
2069 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
2074 * Helper function used by renderbuffer_storage_direct() and
2075 * renderbuffer_storage_target().
2076 * samples will be NO_SAMPLES if called by a non-multisample function.
2079 renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2080 GLenum internalFormat
, GLsizei width
,
2081 GLsizei height
, GLsizei samples
, const char *func
)
2084 GLenum sample_count_error
;
2086 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
2087 if (baseFormat
== 0) {
2088 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
2089 func
, _mesa_enum_to_string(internalFormat
));
2093 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2094 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid width %d)", func
,
2099 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2100 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid height %d)", func
,
2105 if (samples
== NO_SAMPLES
) {
2106 /* NumSamples == 0 indicates non-multisampling */
2110 /* check the sample count;
2111 * note: driver may choose to use more samples than what's requested
2113 sample_count_error
= _mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
2114 internalFormat
, samples
);
2116 /* Section 2.5 (GL Errors) of OpenGL 3.0 specification, page 16:
2118 * "If a negative number is provided where an argument of type sizei or
2119 * sizeiptr is specified, the error INVALID VALUE is generated."
2122 sample_count_error
= GL_INVALID_VALUE
;
2125 if (sample_count_error
!= GL_NO_ERROR
) {
2126 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
2131 _mesa_renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
);
2135 * Helper function used by _mesa_NamedRenderbufferStorage*().
2136 * samples will be NO_SAMPLES if called by a non-multisample function.
2139 renderbuffer_storage_named(GLuint renderbuffer
, GLenum internalFormat
,
2140 GLsizei width
, GLsizei height
, GLsizei samples
,
2143 GET_CURRENT_CONTEXT(ctx
);
2145 if (MESA_VERBOSE
& VERBOSE_API
) {
2146 if (samples
== NO_SAMPLES
)
2147 _mesa_debug(ctx
, "%s(%u, %s, %d, %d)\n",
2149 _mesa_enum_to_string(internalFormat
),
2152 _mesa_debug(ctx
, "%s(%u, %s, %d, %d, %d)\n",
2154 _mesa_enum_to_string(internalFormat
),
2155 width
, height
, samples
);
2158 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2159 if (!rb
|| rb
== &DummyRenderbuffer
) {
2160 /* ID was reserved, but no real renderbuffer object made yet */
2161 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(invalid renderbuffer %u)",
2162 func
, renderbuffer
);
2166 renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
, func
);
2170 * Helper function used by _mesa_RenderbufferStorage() and
2171 * _mesa_RenderbufferStorageMultisample().
2172 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
2175 renderbuffer_storage_target(GLenum target
, GLenum internalFormat
,
2176 GLsizei width
, GLsizei height
, GLsizei samples
,
2179 GET_CURRENT_CONTEXT(ctx
);
2181 if (MESA_VERBOSE
& VERBOSE_API
) {
2182 if (samples
== NO_SAMPLES
)
2183 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
2185 _mesa_enum_to_string(target
),
2186 _mesa_enum_to_string(internalFormat
),
2189 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
2191 _mesa_enum_to_string(target
),
2192 _mesa_enum_to_string(internalFormat
),
2193 width
, height
, samples
);
2196 if (target
!= GL_RENDERBUFFER_EXT
) {
2197 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
2201 if (!ctx
->CurrentRenderbuffer
) {
2202 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(no renderbuffer bound)",
2207 renderbuffer_storage(ctx
, ctx
->CurrentRenderbuffer
, internalFormat
, width
,
2208 height
, samples
, func
);
2213 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
2215 struct gl_renderbuffer
*rb
;
2216 GET_CURRENT_CONTEXT(ctx
);
2218 if (!ctx
->Extensions
.OES_EGL_image
) {
2219 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2220 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
2224 if (target
!= GL_RENDERBUFFER
) {
2225 _mesa_error(ctx
, GL_INVALID_ENUM
,
2226 "EGLImageTargetRenderbufferStorageOES");
2230 rb
= ctx
->CurrentRenderbuffer
;
2232 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2233 "EGLImageTargetRenderbufferStorageOES");
2237 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2239 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
2244 * Helper function for _mesa_GetRenderbufferParameteriv() and
2245 * _mesa_GetFramebufferAttachmentParameteriv()
2246 * We have to be careful to respect the base format. For example, if a
2247 * renderbuffer/texture was created with internalFormat=GL_RGB but the
2248 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
2249 * we need to return zero.
2252 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
2254 if (_mesa_base_format_has_channel(baseFormat
, pname
))
2255 return _mesa_get_format_bits(format
, pname
);
2263 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
2264 GLsizei width
, GLsizei height
)
2266 /* GL_ARB_fbo says calling this function is equivalent to calling
2267 * glRenderbufferStorageMultisample() with samples=0. We pass in
2268 * a token value here just for error reporting purposes.
2270 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2271 NO_SAMPLES
, "glRenderbufferStorage");
2276 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
2277 GLenum internalFormat
,
2278 GLsizei width
, GLsizei height
)
2280 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2281 samples
, "glRenderbufferStorageMultisample");
2286 * OpenGL ES version of glRenderBufferStorage.
2289 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
2290 GLsizei width
, GLsizei height
)
2292 switch (internalFormat
) {
2294 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
2295 /* choose a closest format */
2296 internalFormat
= GL_RGB5
;
2302 renderbuffer_storage_target(target
, internalFormat
, width
, height
, 0,
2303 "glRenderbufferStorageEXT");
2307 _mesa_NamedRenderbufferStorage(GLuint renderbuffer
, GLenum internalformat
,
2308 GLsizei width
, GLsizei height
)
2310 /* GL_ARB_fbo says calling this function is equivalent to calling
2311 * glRenderbufferStorageMultisample() with samples=0. We pass in
2312 * a token value here just for error reporting purposes.
2314 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2315 NO_SAMPLES
, "glNamedRenderbufferStorage");
2319 _mesa_NamedRenderbufferStorageMultisample(GLuint renderbuffer
, GLsizei samples
,
2320 GLenum internalformat
,
2321 GLsizei width
, GLsizei height
)
2323 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2325 "glNamedRenderbufferStorageMultisample");
2330 get_render_buffer_parameteriv(struct gl_context
*ctx
,
2331 struct gl_renderbuffer
*rb
, GLenum pname
,
2332 GLint
*params
, const char *func
)
2334 /* No need to flush here since we're just quering state which is
2335 * not effected by rendering.
2339 case GL_RENDERBUFFER_WIDTH_EXT
:
2340 *params
= rb
->Width
;
2342 case GL_RENDERBUFFER_HEIGHT_EXT
:
2343 *params
= rb
->Height
;
2345 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
2346 *params
= rb
->InternalFormat
;
2348 case GL_RENDERBUFFER_RED_SIZE_EXT
:
2349 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
2350 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
2351 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
2352 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
2353 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
2354 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
2356 case GL_RENDERBUFFER_SAMPLES
:
2357 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
2358 || _mesa_is_gles3(ctx
)) {
2359 *params
= rb
->NumSamples
;
2364 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname=%s)", func
,
2365 _mesa_enum_to_string(pname
));
2372 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2374 GET_CURRENT_CONTEXT(ctx
);
2376 if (target
!= GL_RENDERBUFFER_EXT
) {
2377 _mesa_error(ctx
, GL_INVALID_ENUM
,
2378 "glGetRenderbufferParameterivEXT(target)");
2382 if (!ctx
->CurrentRenderbuffer
) {
2383 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetRenderbufferParameterivEXT"
2384 "(no renderbuffer bound)");
2388 get_render_buffer_parameteriv(ctx
, ctx
->CurrentRenderbuffer
, pname
,
2389 params
, "glGetRenderbufferParameteriv");
2394 _mesa_GetNamedRenderbufferParameteriv(GLuint renderbuffer
, GLenum pname
,
2397 GET_CURRENT_CONTEXT(ctx
);
2399 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2400 if (!rb
|| rb
== &DummyRenderbuffer
) {
2401 /* ID was reserved, but no real renderbuffer object made yet */
2402 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetNamedRenderbufferParameteriv"
2403 "(invalid renderbuffer %i)", renderbuffer
);
2407 get_render_buffer_parameteriv(ctx
, rb
, pname
, params
,
2408 "glGetNamedRenderbufferParameteriv");
2412 GLboolean GLAPIENTRY
2413 _mesa_IsFramebuffer(GLuint framebuffer
)
2415 GET_CURRENT_CONTEXT(ctx
);
2416 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2418 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2419 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
2427 * Check if any of the attachments of the given framebuffer are textures
2428 * (render to texture). Call ctx->Driver.RenderTexture() for such
2432 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2435 assert(ctx
->Driver
.RenderTexture
);
2437 if (_mesa_is_winsys_fbo(fb
))
2438 return; /* can't render to texture with winsys framebuffers */
2440 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2441 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2442 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2443 && driver_RenderTexture_is_safe(att
)) {
2444 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2451 * Examine all the framebuffer's attachments to see if any are textures.
2452 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2453 * notify the device driver that the texture image may have changed.
2456 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2458 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2459 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2462 if (ctx
->Driver
.FinishRenderTexture
) {
2464 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2465 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2466 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2467 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2468 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2476 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2478 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2479 GLboolean bindReadBuf
, bindDrawBuf
;
2480 GET_CURRENT_CONTEXT(ctx
);
2483 case GL_DRAW_FRAMEBUFFER_EXT
:
2484 bindDrawBuf
= GL_TRUE
;
2485 bindReadBuf
= GL_FALSE
;
2487 case GL_READ_FRAMEBUFFER_EXT
:
2488 bindDrawBuf
= GL_FALSE
;
2489 bindReadBuf
= GL_TRUE
;
2491 case GL_FRAMEBUFFER_EXT
:
2492 bindDrawBuf
= GL_TRUE
;
2493 bindReadBuf
= GL_TRUE
;
2496 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2501 /* Binding a user-created framebuffer object */
2502 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2503 if (newDrawFb
== &DummyFramebuffer
) {
2504 /* ID was reserved, but no real framebuffer object made yet */
2507 else if (!newDrawFb
&& !allow_user_names
) {
2508 /* All FBO IDs must be Gen'd */
2509 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2514 /* create new framebuffer object */
2515 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2517 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2520 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2522 newReadFb
= newDrawFb
;
2525 /* Binding the window system framebuffer (which was originally set
2526 * with MakeCurrent).
2528 newDrawFb
= ctx
->WinSysDrawBuffer
;
2529 newReadFb
= ctx
->WinSysReadBuffer
;
2532 _mesa_bind_framebuffers(ctx
,
2533 bindDrawBuf
? newDrawFb
: ctx
->DrawBuffer
,
2534 bindReadBuf
? newReadFb
: ctx
->ReadBuffer
);
2538 _mesa_bind_framebuffers(struct gl_context
*ctx
,
2539 struct gl_framebuffer
*newDrawFb
,
2540 struct gl_framebuffer
*newReadFb
)
2542 struct gl_framebuffer
*const oldDrawFb
= ctx
->DrawBuffer
;
2543 struct gl_framebuffer
*const oldReadFb
= ctx
->ReadBuffer
;
2544 const bool bindDrawBuf
= oldDrawFb
!= newDrawFb
;
2545 const bool bindReadBuf
= oldReadFb
!= newReadFb
;
2548 assert(newDrawFb
!= &DummyFramebuffer
);
2551 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2553 * We also check if we're beginning and/or ending render-to-texture.
2554 * When a framebuffer with texture attachments is unbound, call
2555 * ctx->Driver.FinishRenderTexture().
2556 * When a framebuffer with texture attachments is bound, call
2557 * ctx->Driver.RenderTexture().
2559 * Note that if the ReadBuffer has texture attachments we don't consider
2560 * that a render-to-texture case.
2563 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2565 /* check if old readbuffer was render-to-texture */
2566 check_end_texture_render(ctx
, oldReadFb
);
2568 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2572 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2574 /* check if old framebuffer had any texture attachments */
2576 check_end_texture_render(ctx
, oldDrawFb
);
2578 /* check if newly bound framebuffer has any texture attachments */
2579 check_begin_texture_render(ctx
, newDrawFb
);
2581 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2584 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2585 /* The few classic drivers that actually hook this function really only
2586 * want to know if the draw framebuffer changed.
2588 ctx
->Driver
.BindFramebuffer(ctx
,
2589 bindDrawBuf
? GL_FRAMEBUFFER
: GL_READ_FRAMEBUFFER
,
2590 newDrawFb
, newReadFb
);
2595 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2597 GET_CURRENT_CONTEXT(ctx
);
2599 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2600 * point, but they allow the use of user-generated names.
2602 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2607 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2609 /* This function should not be in the dispatch table for core profile /
2610 * OpenGL 3.1, so execution should never get here in those cases -- no
2611 * need for an explicit test.
2613 bind_framebuffer(target
, framebuffer
, true);
2618 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2621 GET_CURRENT_CONTEXT(ctx
);
2624 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteFramebuffers(n < 0)");
2628 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2630 for (i
= 0; i
< n
; i
++) {
2631 if (framebuffers
[i
] > 0) {
2632 struct gl_framebuffer
*fb
;
2633 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2635 assert(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2637 /* check if deleting currently bound framebuffer object */
2638 if (fb
== ctx
->DrawBuffer
) {
2640 assert(fb
->RefCount
>= 2);
2641 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2643 if (fb
== ctx
->ReadBuffer
) {
2645 assert(fb
->RefCount
>= 2);
2646 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2649 /* remove from hash table immediately, to free the ID */
2650 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2652 if (fb
!= &DummyFramebuffer
) {
2653 /* But the object will not be freed until it's no longer
2654 * bound in any context.
2656 _mesa_reference_framebuffer(&fb
, NULL
);
2665 * This is the implementation for glGenFramebuffers and glCreateFramebuffers.
2666 * It is not exposed to the rest of Mesa to encourage the use of
2667 * nameless buffers in driver internals.
2670 create_framebuffers(GLsizei n
, GLuint
*framebuffers
, bool dsa
)
2672 GET_CURRENT_CONTEXT(ctx
);
2675 struct gl_framebuffer
*fb
;
2677 const char *func
= dsa
? "glCreateFramebuffers" : "glGenFramebuffers";
2680 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n < 0)", func
);
2687 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2689 for (i
= 0; i
< n
; i
++) {
2690 GLuint name
= first
+ i
;
2691 framebuffers
[i
] = name
;
2694 fb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffers
[i
]);
2696 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2701 fb
= &DummyFramebuffer
;
2703 mtx_lock(&ctx
->Shared
->Mutex
);
2704 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, fb
);
2705 mtx_unlock(&ctx
->Shared
->Mutex
);
2711 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2713 create_framebuffers(n
, framebuffers
, false);
2718 _mesa_CreateFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2720 create_framebuffers(n
, framebuffers
, true);
2725 _mesa_check_framebuffer_status(struct gl_context
*ctx
,
2726 struct gl_framebuffer
*buffer
)
2728 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2730 if (_mesa_is_winsys_fbo(buffer
)) {
2731 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2732 if (buffer
!= &IncompleteFramebuffer
) {
2733 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2735 return GL_FRAMEBUFFER_UNDEFINED
;
2739 /* No need to flush here */
2741 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2742 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2745 return buffer
->_Status
;
2750 _mesa_CheckFramebufferStatus(GLenum target
)
2752 struct gl_framebuffer
*fb
;
2753 GET_CURRENT_CONTEXT(ctx
);
2755 if (MESA_VERBOSE
& VERBOSE_API
)
2756 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2757 _mesa_enum_to_string(target
));
2759 fb
= get_framebuffer_target(ctx
, target
);
2761 _mesa_error(ctx
, GL_INVALID_ENUM
,
2762 "glCheckFramebufferStatus(invalid target %s)",
2763 _mesa_enum_to_string(target
));
2767 return _mesa_check_framebuffer_status(ctx
, fb
);
2772 _mesa_CheckNamedFramebufferStatus(GLuint framebuffer
, GLenum target
)
2774 struct gl_framebuffer
*fb
;
2775 GET_CURRENT_CONTEXT(ctx
);
2777 /* Validate the target (for conformance's sake) and grab a reference to the
2778 * default framebuffer in case framebuffer = 0.
2779 * Section 9.4 Framebuffer Completeness of the OpenGL 4.5 core spec
2780 * (30.10.2014, PDF page 336) says:
2781 * "If framebuffer is zero, then the status of the default read or
2782 * draw framebuffer (as determined by target) is returned."
2785 case GL_DRAW_FRAMEBUFFER
:
2786 case GL_FRAMEBUFFER
:
2787 fb
= ctx
->WinSysDrawBuffer
;
2789 case GL_READ_FRAMEBUFFER
:
2790 fb
= ctx
->WinSysReadBuffer
;
2793 _mesa_error(ctx
, GL_INVALID_ENUM
,
2794 "glCheckNamedFramebufferStatus(invalid target %s)",
2795 _mesa_enum_to_string(target
));
2800 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
2801 "glCheckNamedFramebufferStatus");
2806 return _mesa_check_framebuffer_status(ctx
, fb
);
2811 * Replicate the src attachment point. Used by framebuffer_texture() when
2812 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2813 * GL_STENCIL_ATTACHMENT.
2816 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2817 gl_buffer_index dst
,
2818 gl_buffer_index src
)
2820 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2821 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2823 assert(src_att
->Texture
!= NULL
);
2824 assert(src_att
->Renderbuffer
!= NULL
);
2826 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2827 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2828 dst_att
->Type
= src_att
->Type
;
2829 dst_att
->Complete
= src_att
->Complete
;
2830 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2831 dst_att
->Zoffset
= src_att
->Zoffset
;
2832 dst_att
->Layered
= src_att
->Layered
;
2837 * Common code called by gl*FramebufferTexture*() to retrieve the correct
2838 * texture object pointer.
2840 * \param texObj where the pointer to the texture object is returned. Note
2841 * that a successful call may return texObj = NULL.
2843 * \return true if no errors, false if errors
2846 get_texture_for_framebuffer(struct gl_context
*ctx
, GLuint texture
,
2847 bool layered
, const char *caller
,
2848 struct gl_texture_object
**texObj
)
2850 *texObj
= NULL
; /* This will get returned if texture = 0. */
2855 *texObj
= _mesa_lookup_texture(ctx
, texture
);
2856 if (*texObj
== NULL
|| (*texObj
)->Target
== 0) {
2857 /* Can't render to a non-existent texture object.
2859 * The OpenGL 4.5 core spec (02.02.2015) in Section 9.2 Binding and
2860 * Managing Framebuffer Objects specifies a different error
2861 * depending upon the calling function (PDF pages 325-328).
2862 * *FramebufferTexture (where layered = GL_TRUE) throws invalid
2863 * value, while the other commands throw invalid operation (where
2864 * layered = GL_FALSE).
2866 const GLenum error
= layered
? GL_INVALID_VALUE
:
2867 GL_INVALID_OPERATION
;
2868 _mesa_error(ctx
, error
,
2869 "%s(non-existent texture %u)", caller
, texture
);
2878 * Common code called by gl*FramebufferTexture() to verify the texture target
2879 * and decide whether or not the attachment should truly be considered
2882 * \param layered true if attachment should be considered layered, false if
2885 * \return true if no errors, false if errors
2888 check_layered_texture_target(struct gl_context
*ctx
, GLenum target
,
2889 const char *caller
, GLboolean
*layered
)
2895 case GL_TEXTURE_1D_ARRAY_EXT
:
2896 case GL_TEXTURE_2D_ARRAY_EXT
:
2897 case GL_TEXTURE_CUBE_MAP
:
2898 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2899 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2903 case GL_TEXTURE_RECTANGLE
:
2904 case GL_TEXTURE_2D_MULTISAMPLE
:
2905 /* These texture types are valid to pass to
2906 * glFramebufferTexture(), but since they aren't layered, it
2907 * is equivalent to calling glFramebufferTexture{1D,2D}().
2909 *layered
= GL_FALSE
;
2913 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2914 "%s(invalid texture target %s)", caller
,
2915 _mesa_enum_to_string(target
));
2921 * Common code called by gl*FramebufferTextureLayer() to verify the texture
2924 * \return true if no errors, false if errors
2927 check_texture_target(struct gl_context
*ctx
, GLenum target
,
2930 /* We're being called by glFramebufferTextureLayer().
2931 * The only legal texture types for that function are 3D,
2932 * cube-map, and 1D/2D/cube-map array textures.
2934 * We don't need to check for GL_ARB_texture_cube_map_array because the
2935 * application wouldn't have been able to create a texture with a
2936 * GL_TEXTURE_CUBE_MAP_ARRAY target if the extension were not enabled.
2940 case GL_TEXTURE_1D_ARRAY
:
2941 case GL_TEXTURE_2D_ARRAY
:
2942 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2943 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2945 case GL_TEXTURE_CUBE_MAP
:
2946 /* We don't need to check the extension (GL_ARB_direct_state_access) or
2947 * GL version (4.5) for GL_TEXTURE_CUBE_MAP because DSA is always
2948 * enabled in core profile. This can be called from
2949 * _mesa_FramebufferTextureLayer in compatibility profile (OpenGL 3.0),
2950 * so we do have to check the profile.
2952 return ctx
->API
== API_OPENGL_CORE
;
2955 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2956 "%s(invalid texture target %s)", caller
,
2957 _mesa_enum_to_string(target
));
2963 * Common code called by glFramebufferTexture*D() to verify the texture
2966 * \return true if no errors, false if errors
2969 check_textarget(struct gl_context
*ctx
, int dims
, GLenum target
,
2970 GLenum textarget
, const char *caller
)
2976 switch (textarget
) {
2979 case GL_TEXTURE_1D_ARRAY
:
2980 err
= !ctx
->Extensions
.EXT_texture_array
;
2987 switch (textarget
) {
2990 case GL_TEXTURE_RECTANGLE
:
2991 err
= _mesa_is_gles(ctx
)
2992 || !ctx
->Extensions
.NV_texture_rectangle
;
2994 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2995 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2996 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2997 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2998 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2999 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
3000 err
= !ctx
->Extensions
.ARB_texture_cube_map
;
3002 case GL_TEXTURE_2D_ARRAY
:
3003 err
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
3004 || !ctx
->Extensions
.EXT_texture_array
;
3006 case GL_TEXTURE_2D_MULTISAMPLE
:
3007 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
3008 err
= (_mesa_is_gles(ctx
) ||
3009 !ctx
->Extensions
.ARB_texture_multisample
) &&
3010 !_mesa_is_gles31(ctx
);
3017 if (textarget
!= GL_TEXTURE_3D
)
3025 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3026 "%s(invalid textarget %s)",
3027 caller
, _mesa_enum_to_string(textarget
));
3031 /* Make sure textarget is consistent with the texture's type */
3032 err
= (target
== GL_TEXTURE_CUBE_MAP
) ?
3033 !_mesa_is_cube_face(textarget
): (target
!= textarget
);
3036 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3037 "%s(mismatched texture target)", caller
);
3046 * Common code called by gl*FramebufferTextureLayer() and
3047 * glFramebufferTexture3D() to validate the layer.
3049 * \return true if no errors, false if errors
3052 check_layer(struct gl_context
*ctx
, GLenum target
, GLint layer
,
3055 /* Page 306 (page 328 of the PDF) of the OpenGL 4.5 (Core Profile)
3058 * "An INVALID_VALUE error is generated if texture is non-zero
3059 * and layer is negative."
3062 _mesa_error(ctx
, GL_INVALID_VALUE
,
3063 "%s(layer %u < 0)", caller
, layer
);
3067 if (target
== GL_TEXTURE_3D
) {
3068 const GLuint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
3069 if (layer
>= maxSize
) {
3070 _mesa_error(ctx
, GL_INVALID_VALUE
,
3071 "%s(invalid layer %u)", caller
, layer
);
3075 else if ((target
== GL_TEXTURE_1D_ARRAY
) ||
3076 (target
== GL_TEXTURE_2D_ARRAY
) ||
3077 (target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
3078 (target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
3079 if (layer
>= ctx
->Const
.MaxArrayTextureLayers
) {
3080 _mesa_error(ctx
, GL_INVALID_VALUE
,
3081 "%s(layer %u >= GL_MAX_ARRAY_TEXTURE_LAYERS)",
3086 else if (target
== GL_TEXTURE_CUBE_MAP
) {
3088 _mesa_error(ctx
, GL_INVALID_VALUE
,
3089 "%s(layer %u >= 6)", caller
, layer
);
3099 * Common code called by all gl*FramebufferTexture*() entry points to verify
3102 * \return true if no errors, false if errors
3105 check_level(struct gl_context
*ctx
, GLenum target
, GLint level
,
3109 (level
>= _mesa_max_texture_levels(ctx
, target
))) {
3110 _mesa_error(ctx
, GL_INVALID_VALUE
,
3111 "%s(invalid level %d)", caller
, level
);
3120 _mesa_framebuffer_texture(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
3122 struct gl_texture_object
*texObj
, GLenum textarget
,
3123 GLint level
, GLuint layer
, GLboolean layered
,
3126 struct gl_renderbuffer_attachment
*att
;
3128 /* The window-system framebuffer object is immutable */
3129 if (_mesa_is_winsys_fbo(fb
)) {
3130 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(window-system framebuffer)",
3135 /* Not a hash lookup, so we can afford to get the attachment here. */
3136 att
= get_attachment(ctx
, fb
, attachment
);
3138 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3139 _mesa_enum_to_string(attachment
));
3143 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3145 mtx_lock(&fb
->Mutex
);
3147 if (attachment
== GL_DEPTH_ATTACHMENT
&&
3148 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
3149 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
3150 _mesa_tex_target_to_face(textarget
) ==
3151 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
3152 layer
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
3153 /* The texture object is already attached to the stencil attachment
3154 * point. Don't create a new renderbuffer; just reuse the stencil
3155 * attachment's. This is required to prevent a GL error in
3156 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
3158 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
3160 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
3161 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
3162 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
3163 _mesa_tex_target_to_face(textarget
) ==
3164 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
3165 layer
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
3166 /* As above, but with depth and stencil transposed. */
3167 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
3170 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
3171 level
, layer
, layered
);
3173 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3174 /* Above we created a new renderbuffer and attached it to the
3175 * depth attachment point. Now attach it to the stencil attachment
3178 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3179 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
3184 /* Set the render-to-texture flag. We'll check this flag in
3185 * glTexImage() and friends to determine if we need to revalidate
3186 * any FBOs that might be rendering into this texture.
3187 * This flag never gets cleared since it's non-trivial to determine
3188 * when all FBOs might be done rendering to this texture. That's OK
3189 * though since it's uncommon to render to a texture then repeatedly
3190 * call glTexImage() to change images in the texture.
3192 texObj
->_RenderToTexture
= GL_TRUE
;
3195 remove_attachment(ctx
, att
);
3196 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3197 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3198 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
3202 invalidate_framebuffer(fb
);
3204 mtx_unlock(&fb
->Mutex
);
3209 framebuffer_texture_with_dims(int dims
, GLenum target
,
3210 GLenum attachment
, GLenum textarget
,
3211 GLuint texture
, GLint level
, GLint layer
,
3214 GET_CURRENT_CONTEXT(ctx
);
3215 struct gl_framebuffer
*fb
;
3216 struct gl_texture_object
*texObj
;
3218 /* Get the framebuffer object */
3219 fb
= get_framebuffer_target(ctx
, target
);
3221 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid target %s)", caller
,
3222 _mesa_enum_to_string(target
));
3226 /* Get the texture object */
3227 if (!get_texture_for_framebuffer(ctx
, texture
, false, caller
, &texObj
))
3231 if (!check_textarget(ctx
, dims
, texObj
->Target
, textarget
, caller
))
3234 if ((dims
== 3) && !check_layer(ctx
, texObj
->Target
, layer
, caller
))
3238 if (!check_level(ctx
, textarget
, level
, caller
))
3241 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3242 layer
, GL_FALSE
, caller
);
3247 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
3248 GLenum textarget
, GLuint texture
, GLint level
)
3250 framebuffer_texture_with_dims(1, target
, attachment
, textarget
, texture
,
3251 level
, 0, "glFramebufferTexture1D");
3256 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
3257 GLenum textarget
, GLuint texture
, GLint level
)
3259 framebuffer_texture_with_dims(2, target
, attachment
, textarget
, texture
,
3260 level
, 0, "glFramebufferTexture2D");
3265 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
3266 GLenum textarget
, GLuint texture
,
3267 GLint level
, GLint layer
)
3269 framebuffer_texture_with_dims(3, target
, attachment
, textarget
, texture
,
3270 level
, layer
, "glFramebufferTexture3D");
3275 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
3276 GLuint texture
, GLint level
, GLint layer
)
3278 GET_CURRENT_CONTEXT(ctx
);
3279 struct gl_framebuffer
*fb
;
3280 struct gl_texture_object
*texObj
;
3281 GLenum textarget
= 0;
3283 const char *func
= "glFramebufferTextureLayer";
3285 /* Get the framebuffer object */
3286 fb
= get_framebuffer_target(ctx
, target
);
3288 _mesa_error(ctx
, GL_INVALID_ENUM
,
3289 "glFramebufferTextureLayer(invalid target %s)",
3290 _mesa_enum_to_string(target
));
3294 /* Get the texture object */
3295 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3299 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3302 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3305 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3308 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3309 assert(layer
>= 0 && layer
< 6);
3310 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3315 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3316 layer
, GL_FALSE
, func
);
3321 _mesa_NamedFramebufferTextureLayer(GLuint framebuffer
, GLenum attachment
,
3322 GLuint texture
, GLint level
, GLint layer
)
3324 GET_CURRENT_CONTEXT(ctx
);
3325 struct gl_framebuffer
*fb
;
3326 struct gl_texture_object
*texObj
;
3327 GLenum textarget
= 0;
3329 const char *func
= "glNamedFramebufferTextureLayer";
3331 /* Get the framebuffer object */
3332 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3336 /* Get the texture object */
3337 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3341 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3344 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3347 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3350 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3351 assert(layer
>= 0 && layer
< 6);
3352 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3357 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3358 layer
, GL_FALSE
, func
);
3363 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
3364 GLuint texture
, GLint level
)
3366 GET_CURRENT_CONTEXT(ctx
);
3367 struct gl_framebuffer
*fb
;
3368 struct gl_texture_object
*texObj
;
3369 GLboolean layered
= GL_FALSE
;
3371 const char *func
= "FramebufferTexture";
3373 if (!_mesa_has_geometry_shaders(ctx
)) {
3374 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3375 "unsupported function (glFramebufferTexture) called");
3379 /* Get the framebuffer object */
3380 fb
= get_framebuffer_target(ctx
, target
);
3382 _mesa_error(ctx
, GL_INVALID_ENUM
,
3383 "glFramebufferTexture(invalid target %s)",
3384 _mesa_enum_to_string(target
));
3388 /* Get the texture object */
3389 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3393 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
, &layered
))
3396 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3400 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3406 _mesa_NamedFramebufferTexture(GLuint framebuffer
, GLenum attachment
,
3407 GLuint texture
, GLint level
)
3409 GET_CURRENT_CONTEXT(ctx
);
3410 struct gl_framebuffer
*fb
;
3411 struct gl_texture_object
*texObj
;
3412 GLboolean layered
= GL_FALSE
;
3414 const char *func
= "glNamedFramebufferTexture";
3416 if (!_mesa_has_geometry_shaders(ctx
)) {
3417 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3418 "unsupported function (glNamedFramebufferTexture) called");
3422 /* Get the framebuffer object */
3423 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3427 /* Get the texture object */
3428 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3432 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
,
3436 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3440 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3446 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
3447 struct gl_framebuffer
*fb
,
3449 struct gl_renderbuffer
*rb
)
3451 assert(!_mesa_is_winsys_fbo(fb
));
3453 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3455 assert(ctx
->Driver
.FramebufferRenderbuffer
);
3456 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
3458 /* Some subsequent GL commands may depend on the framebuffer's visual
3459 * after the binding is updated. Update visual info now.
3461 _mesa_update_framebuffer_visual(ctx
, fb
);
3465 framebuffer_renderbuffer(struct gl_context
*ctx
,
3466 struct gl_framebuffer
*fb
,
3468 struct gl_renderbuffer
*rb
,
3471 struct gl_renderbuffer_attachment
*att
;
3473 if (_mesa_is_winsys_fbo(fb
)) {
3474 /* Can't attach new renderbuffers to a window system framebuffer */
3475 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3476 "%s(window-system framebuffer)", func
);
3480 att
= get_attachment(ctx
, fb
, attachment
);
3482 _mesa_error(ctx
, GL_INVALID_ENUM
,
3483 "%s(invalid attachment %s)", func
,
3484 _mesa_enum_to_string(attachment
));
3488 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
3489 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
3490 /* make sure the renderbuffer is a depth/stencil format */
3491 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
3492 if (baseFormat
!= GL_DEPTH_STENCIL
) {
3493 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3494 "%s(renderbuffer is not DEPTH_STENCIL format)", func
);
3499 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
3503 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
3504 GLenum renderbuffertarget
,
3505 GLuint renderbuffer
)
3507 struct gl_framebuffer
*fb
;
3508 struct gl_renderbuffer
*rb
;
3509 GET_CURRENT_CONTEXT(ctx
);
3511 fb
= get_framebuffer_target(ctx
, target
);
3513 _mesa_error(ctx
, GL_INVALID_ENUM
,
3514 "glFramebufferRenderbuffer(invalid target %s)",
3515 _mesa_enum_to_string(target
));
3519 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3520 _mesa_error(ctx
, GL_INVALID_ENUM
,
3521 "glFramebufferRenderbuffer(renderbuffertarget is not "
3522 "GL_RENDERBUFFER)");
3527 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3528 "glFramebufferRenderbuffer");
3533 /* remove renderbuffer attachment */
3537 framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3538 "glFramebufferRenderbuffer");
3543 _mesa_NamedFramebufferRenderbuffer(GLuint framebuffer
, GLenum attachment
,
3544 GLenum renderbuffertarget
,
3545 GLuint renderbuffer
)
3547 struct gl_framebuffer
*fb
;
3548 struct gl_renderbuffer
*rb
;
3549 GET_CURRENT_CONTEXT(ctx
);
3551 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3552 "glNamedFramebufferRenderbuffer");
3556 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3557 _mesa_error(ctx
, GL_INVALID_ENUM
,
3558 "glNamedFramebufferRenderbuffer(renderbuffertarget is not "
3559 "GL_RENDERBUFFER)");
3564 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3565 "glNamedFramebufferRenderbuffer");
3570 /* remove renderbuffer attachment */
3574 framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3575 "glNamedFramebufferRenderbuffer");
3580 _mesa_get_framebuffer_attachment_parameter(struct gl_context
*ctx
,
3581 struct gl_framebuffer
*buffer
,
3582 GLenum attachment
, GLenum pname
,
3583 GLint
*params
, const char *caller
)
3585 const struct gl_renderbuffer_attachment
*att
;
3588 /* The error code for an attachment type of GL_NONE differs between APIs.
3590 * From the ES 2.0.25 specification, page 127:
3591 * "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then
3592 * querying any other pname will generate INVALID_ENUM."
3594 * From the OpenGL 3.0 specification, page 337, or identically,
3595 * the OpenGL ES 3.0.4 specification, page 240:
3597 * "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, no
3598 * framebuffer is bound to target. In this case querying pname
3599 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME will return zero, and all other
3600 * queries will generate an INVALID_OPERATION error."
3602 err
= ctx
->API
== API_OPENGLES2
&& ctx
->Version
< 30 ?
3603 GL_INVALID_ENUM
: GL_INVALID_OPERATION
;
3605 if (_mesa_is_winsys_fbo(buffer
)) {
3606 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
3609 * "If the framebuffer currently bound to target is zero, then
3610 * INVALID_OPERATION is generated."
3612 * The EXT_framebuffer_object spec has the same wording, and the
3613 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
3616 if ((!_mesa_is_desktop_gl(ctx
) ||
3617 !ctx
->Extensions
.ARB_framebuffer_object
)
3618 && !_mesa_is_gles3(ctx
)) {
3619 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3620 "%s(window-system framebuffer)", caller
);
3624 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
3625 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
3626 _mesa_error(ctx
, GL_INVALID_ENUM
,
3627 "%s(invalid attachment %s)", caller
,
3628 _mesa_enum_to_string(attachment
));
3632 /* The specs are not clear about how to handle
3633 * GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME with the default framebuffer,
3634 * but dEQP-GLES3 expects an INVALID_ENUM error. This has also been
3637 * https://cvs.khronos.org/bugzilla/show_bug.cgi?id=12928#c1
3638 * and https://bugs.freedesktop.org/show_bug.cgi?id=31947
3640 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME
) {
3641 _mesa_error(ctx
, GL_INVALID_ENUM
,
3642 "%s(requesting GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME "
3643 "when GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is "
3644 "GL_FRAMEBUFFER_DEFAULT is not allowed)", caller
);
3648 /* the default / window-system FBO */
3649 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
3652 /* user-created framebuffer FBO */
3653 att
= get_attachment(ctx
, buffer
, attachment
);
3657 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3658 _mesa_enum_to_string(attachment
));
3662 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3663 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
3664 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
3665 /* This behavior is first specified in OpenGL 4.4 specification.
3667 * From the OpenGL 4.4 spec page 275:
3668 * "This query cannot be performed for a combined depth+stencil
3669 * attachment, since it does not have a single format."
3671 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3672 "%s(GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
3673 " is invalid for depth+stencil attachment)", caller
);
3676 /* the depth and stencil attachments must point to the same buffer */
3677 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
3678 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
3679 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
3680 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3681 "%s(DEPTH/STENCIL attachments differ)", caller
);
3686 /* No need to flush here */
3689 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
3690 /* From the OpenGL spec, 9.2. Binding and Managing Framebuffer Objects:
3692 * "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then
3693 * either no framebuffer is bound to target; or the default framebuffer
3694 * is bound, attachment is DEPTH or STENCIL, and the number of depth or
3695 * stencil bits, respectively, is zero."
3697 *params
= (_mesa_is_winsys_fbo(buffer
) &&
3698 ((attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) ||
3699 (att
->Type
!= GL_NONE
)))
3700 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
3702 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
3703 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
3704 *params
= att
->Renderbuffer
->Name
;
3706 else if (att
->Type
== GL_TEXTURE
) {
3707 *params
= att
->Texture
->Name
;
3710 assert(att
->Type
== GL_NONE
);
3711 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
3714 goto invalid_pname_enum
;
3718 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
3719 if (att
->Type
== GL_TEXTURE
) {
3720 *params
= att
->TextureLevel
;
3722 else if (att
->Type
== GL_NONE
) {
3723 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3724 _mesa_enum_to_string(pname
));
3727 goto invalid_pname_enum
;
3730 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
3731 if (att
->Type
== GL_TEXTURE
) {
3732 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
3733 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
3739 else if (att
->Type
== GL_NONE
) {
3740 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3741 _mesa_enum_to_string(pname
));
3744 goto invalid_pname_enum
;
3747 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
3748 if (ctx
->API
== API_OPENGLES
) {
3749 goto invalid_pname_enum
;
3750 } else if (att
->Type
== GL_NONE
) {
3751 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3752 _mesa_enum_to_string(pname
));
3753 } else if (att
->Type
== GL_TEXTURE
) {
3754 if (att
->Texture
&& (att
->Texture
->Target
== GL_TEXTURE_3D
||
3755 att
->Texture
->Target
== GL_TEXTURE_2D_ARRAY
)) {
3756 *params
= att
->Zoffset
;
3763 goto invalid_pname_enum
;
3766 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
3767 if ((!_mesa_is_desktop_gl(ctx
) ||
3768 !ctx
->Extensions
.ARB_framebuffer_object
)
3769 && !_mesa_is_gles3(ctx
)) {
3770 goto invalid_pname_enum
;
3772 else if (att
->Type
== GL_NONE
) {
3773 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3774 _mesa_enum_to_string(pname
));
3777 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
3779 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
3782 /* According to ARB_framebuffer_sRGB, we should return LINEAR
3783 * if the sRGB conversion is unsupported. */
3784 *params
= GL_LINEAR
;
3788 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
3789 if ((ctx
->API
!= API_OPENGL_COMPAT
||
3790 !ctx
->Extensions
.ARB_framebuffer_object
)
3791 && ctx
->API
!= API_OPENGL_CORE
3792 && !_mesa_is_gles3(ctx
)) {
3793 goto invalid_pname_enum
;
3795 else if (att
->Type
== GL_NONE
) {
3796 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3797 _mesa_enum_to_string(pname
));
3800 mesa_format format
= att
->Renderbuffer
->Format
;
3802 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
3805 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
3806 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
3807 * generate an INVALID_OPERATION error.
3809 if (_mesa_is_gles3(ctx
) &&
3810 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3811 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3813 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
3814 "GL_DEPTH_STENCIL_ATTACHMENT)", caller
);
3818 if (format
== MESA_FORMAT_S_UINT8
) {
3822 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
3823 /* depends on the attachment parameter */
3824 if (attachment
== GL_STENCIL_ATTACHMENT
) {
3832 *params
= _mesa_get_format_datatype(format
);
3836 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
3837 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
3838 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
3839 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
3840 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
3841 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
3842 if ((!_mesa_is_desktop_gl(ctx
) ||
3843 !ctx
->Extensions
.ARB_framebuffer_object
)
3844 && !_mesa_is_gles3(ctx
)) {
3845 goto invalid_pname_enum
;
3847 else if (att
->Type
== GL_NONE
) {
3848 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3849 _mesa_enum_to_string(pname
));
3851 else if (att
->Texture
) {
3852 const struct gl_texture_image
*texImage
=
3853 _mesa_select_tex_image(att
->Texture
, att
->Texture
->Target
,
3856 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
3857 texImage
->TexFormat
);
3863 else if (att
->Renderbuffer
) {
3864 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
3865 att
->Renderbuffer
->Format
);
3868 _mesa_problem(ctx
, "%s: invalid FBO attachment structure", caller
);
3871 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
3872 if (!_mesa_has_geometry_shaders(ctx
)) {
3873 goto invalid_pname_enum
;
3874 } else if (att
->Type
== GL_TEXTURE
) {
3875 *params
= att
->Layered
;
3876 } else if (att
->Type
== GL_NONE
) {
3877 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3878 _mesa_enum_to_string(pname
));
3880 goto invalid_pname_enum
;
3884 goto invalid_pname_enum
;
3890 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname %s)", caller
,
3891 _mesa_enum_to_string(pname
));
3897 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
3898 GLenum pname
, GLint
*params
)
3900 GET_CURRENT_CONTEXT(ctx
);
3901 struct gl_framebuffer
*buffer
;
3903 buffer
= get_framebuffer_target(ctx
, target
);
3905 _mesa_error(ctx
, GL_INVALID_ENUM
,
3906 "glGetFramebufferAttachmentParameteriv(invalid target %s)",
3907 _mesa_enum_to_string(target
));
3911 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3913 "glGetFramebufferAttachmentParameteriv");
3918 _mesa_GetNamedFramebufferAttachmentParameteriv(GLuint framebuffer
,
3920 GLenum pname
, GLint
*params
)
3922 GET_CURRENT_CONTEXT(ctx
);
3923 struct gl_framebuffer
*buffer
;
3926 buffer
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3927 "glGetNamedFramebufferAttachmentParameteriv");
3933 * Section 9.2 Binding and Managing Framebuffer Objects of the OpenGL
3934 * 4.5 core spec (30.10.2014, PDF page 314):
3935 * "If framebuffer is zero, then the default draw framebuffer is
3938 buffer
= ctx
->WinSysDrawBuffer
;
3941 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3943 "glGetNamedFramebufferAttachmentParameteriv");
3948 _mesa_NamedFramebufferParameteri(GLuint framebuffer
, GLenum pname
,
3951 GET_CURRENT_CONTEXT(ctx
);
3952 struct gl_framebuffer
*fb
= NULL
;
3954 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3955 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3956 "glNamedFramebufferParameteri("
3957 "ARB_framebuffer_no_attachments not implemented)");
3961 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3962 "glNamedFramebufferParameteri");
3965 framebuffer_parameteri(ctx
, fb
, pname
, param
,
3966 "glNamedFramebufferParameteriv");
3972 _mesa_GetNamedFramebufferParameteriv(GLuint framebuffer
, GLenum pname
,
3975 GET_CURRENT_CONTEXT(ctx
);
3976 struct gl_framebuffer
*fb
;
3978 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3979 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3980 "glNamedFramebufferParameteriv("
3981 "ARB_framebuffer_no_attachments not implemented)");
3986 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3987 "glGetNamedFramebufferParameteriv");
3989 fb
= ctx
->WinSysDrawBuffer
;
3993 get_framebuffer_parameteriv(ctx
, fb
, pname
, param
,
3994 "glGetNamedFramebufferParameteriv");
4000 invalidate_framebuffer_storage(struct gl_context
*ctx
,
4001 struct gl_framebuffer
*fb
,
4002 GLsizei numAttachments
,
4003 const GLenum
*attachments
, GLint x
, GLint y
,
4004 GLsizei width
, GLsizei height
, const char *name
)
4008 /* Section 17.4 Whole Framebuffer Operations of the OpenGL 4.5 Core
4009 * Spec (2.2.2015, PDF page 522) says:
4010 * "An INVALID_VALUE error is generated if numAttachments, width, or
4011 * height is negative."
4013 if (numAttachments
< 0) {
4014 _mesa_error(ctx
, GL_INVALID_VALUE
,
4015 "%s(numAttachments < 0)", name
);
4020 _mesa_error(ctx
, GL_INVALID_VALUE
,
4021 "%s(width < 0)", name
);
4026 _mesa_error(ctx
, GL_INVALID_VALUE
,
4027 "%s(height < 0)", name
);
4031 /* The GL_ARB_invalidate_subdata spec says:
4033 * "If an attachment is specified that does not exist in the
4034 * framebuffer bound to <target>, it is ignored."
4038 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
4039 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
4040 * INVALID_OPERATION is generated."
4042 * No mention is made of GL_AUXi being out of range. Therefore, we allow
4043 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
4044 * set of retrictions).
4046 for (i
= 0; i
< numAttachments
; i
++) {
4047 if (_mesa_is_winsys_fbo(fb
)) {
4048 switch (attachments
[i
]) {
4054 /* Accumulation buffers and auxilary buffers were removed in
4055 * OpenGL 3.1, and they never existed in OpenGL ES.
4057 if (ctx
->API
!= API_OPENGL_COMPAT
)
4067 case GL_FRONT_RIGHT
:
4068 if (!_mesa_is_desktop_gl(ctx
))
4075 switch (attachments
[i
]) {
4076 case GL_DEPTH_ATTACHMENT
:
4077 case GL_STENCIL_ATTACHMENT
:
4079 case GL_DEPTH_STENCIL_ATTACHMENT
:
4080 /* GL_DEPTH_STENCIL_ATTACHMENT is a valid attachment point only
4081 * in desktop and ES 3.0 profiles. Note that OES_packed_depth_stencil
4082 * extension does not make this attachment point valid on ES 2.0.
4084 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
))
4087 case GL_COLOR_ATTACHMENT0
:
4088 case GL_COLOR_ATTACHMENT1
:
4089 case GL_COLOR_ATTACHMENT2
:
4090 case GL_COLOR_ATTACHMENT3
:
4091 case GL_COLOR_ATTACHMENT4
:
4092 case GL_COLOR_ATTACHMENT5
:
4093 case GL_COLOR_ATTACHMENT6
:
4094 case GL_COLOR_ATTACHMENT7
:
4095 case GL_COLOR_ATTACHMENT8
:
4096 case GL_COLOR_ATTACHMENT9
:
4097 case GL_COLOR_ATTACHMENT10
:
4098 case GL_COLOR_ATTACHMENT11
:
4099 case GL_COLOR_ATTACHMENT12
:
4100 case GL_COLOR_ATTACHMENT13
:
4101 case GL_COLOR_ATTACHMENT14
:
4102 case GL_COLOR_ATTACHMENT15
: {
4103 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
4104 if (k
>= ctx
->Const
.MaxColorAttachments
) {
4105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4106 "%s(attachment >= max. color attachments)", name
);
4117 /* We don't actually do anything for this yet. Just return after
4118 * validating the parameters and generating the required errors.
4123 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", name
,
4124 _mesa_enum_to_string(attachments
[i
]));
4130 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
4131 const GLenum
*attachments
, GLint x
, GLint y
,
4132 GLsizei width
, GLsizei height
)
4134 struct gl_framebuffer
*fb
;
4135 GET_CURRENT_CONTEXT(ctx
);
4137 fb
= get_framebuffer_target(ctx
, target
);
4139 _mesa_error(ctx
, GL_INVALID_ENUM
,
4140 "glInvalidateSubFramebuffer(invalid target %s)",
4141 _mesa_enum_to_string(target
));
4145 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4146 x
, y
, width
, height
,
4147 "glInvalidateSubFramebuffer");
4152 _mesa_InvalidateNamedFramebufferSubData(GLuint framebuffer
,
4153 GLsizei numAttachments
,
4154 const GLenum
*attachments
,
4156 GLsizei width
, GLsizei height
)
4158 struct gl_framebuffer
*fb
;
4159 GET_CURRENT_CONTEXT(ctx
);
4161 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4162 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4163 * default draw framebuffer is affected."
4166 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4167 "glInvalidateNamedFramebufferSubData");
4172 fb
= ctx
->WinSysDrawBuffer
;
4174 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4175 x
, y
, width
, height
,
4176 "glInvalidateNamedFramebufferSubData");
4181 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
4182 const GLenum
*attachments
)
4184 struct gl_framebuffer
*fb
;
4185 GET_CURRENT_CONTEXT(ctx
);
4187 fb
= get_framebuffer_target(ctx
, target
);
4189 _mesa_error(ctx
, GL_INVALID_ENUM
,
4190 "glInvalidateFramebuffer(invalid target %s)",
4191 _mesa_enum_to_string(target
));
4195 /* The GL_ARB_invalidate_subdata spec says:
4199 * void InvalidateFramebuffer(enum target,
4200 * sizei numAttachments,
4201 * const enum *attachments);
4203 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4204 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4205 * <MAX_VIEWPORT_DIMS[1]> respectively."
4207 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4209 ctx
->Const
.MaxViewportWidth
,
4210 ctx
->Const
.MaxViewportHeight
,
4211 "glInvalidateFramebuffer");
4216 _mesa_InvalidateNamedFramebufferData(GLuint framebuffer
,
4217 GLsizei numAttachments
,
4218 const GLenum
*attachments
)
4220 struct gl_framebuffer
*fb
;
4221 GET_CURRENT_CONTEXT(ctx
);
4223 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4224 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4225 * default draw framebuffer is affected."
4228 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4229 "glInvalidateNamedFramebufferData");
4234 fb
= ctx
->WinSysDrawBuffer
;
4236 /* The GL_ARB_invalidate_subdata spec says:
4240 * void InvalidateFramebuffer(enum target,
4241 * sizei numAttachments,
4242 * const enum *attachments);
4244 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4245 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4246 * <MAX_VIEWPORT_DIMS[1]> respectively."
4248 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4250 ctx
->Const
.MaxViewportWidth
,
4251 ctx
->Const
.MaxViewportHeight
,
4252 "glInvalidateNamedFramebufferData");
4257 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
4258 const GLenum
*attachments
)
4260 struct gl_framebuffer
*fb
;
4263 GET_CURRENT_CONTEXT(ctx
);
4265 fb
= get_framebuffer_target(ctx
, target
);
4267 _mesa_error(ctx
, GL_INVALID_ENUM
,
4268 "glDiscardFramebufferEXT(target %s)",
4269 _mesa_enum_to_string(target
));
4273 if (numAttachments
< 0) {
4274 _mesa_error(ctx
, GL_INVALID_VALUE
,
4275 "glDiscardFramebufferEXT(numAttachments < 0)");
4279 for (i
= 0; i
< numAttachments
; i
++) {
4280 switch (attachments
[i
]) {
4284 if (_mesa_is_user_fbo(fb
))
4287 case GL_COLOR_ATTACHMENT0
:
4288 case GL_DEPTH_ATTACHMENT
:
4289 case GL_STENCIL_ATTACHMENT
:
4290 if (_mesa_is_winsys_fbo(fb
))
4298 if (ctx
->Driver
.DiscardFramebuffer
)
4299 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
4304 _mesa_error(ctx
, GL_INVALID_ENUM
,
4305 "glDiscardFramebufferEXT(attachment %s)",
4306 _mesa_enum_to_string(attachments
[i
]));