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
= _mesa_get_format_base_format(texImage
->TexFormat
);
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
=
872 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
874 assert(att
->Renderbuffer
);
875 if (!att
->Renderbuffer
->InternalFormat
||
876 att
->Renderbuffer
->Width
< 1 ||
877 att
->Renderbuffer
->Height
< 1) {
878 att_incomplete("0x0 renderbuffer");
879 att
->Complete
= GL_FALSE
;
882 if (format
== GL_COLOR
) {
883 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
884 att_incomplete("bad renderbuffer color format");
885 att
->Complete
= GL_FALSE
;
889 else if (format
== GL_DEPTH
) {
890 if (baseFormat
== GL_DEPTH_COMPONENT
) {
893 else if (baseFormat
== GL_DEPTH_STENCIL
) {
897 att_incomplete("bad renderbuffer depth format");
898 att
->Complete
= GL_FALSE
;
903 assert(format
== GL_STENCIL
);
904 if (baseFormat
== GL_STENCIL_INDEX
||
905 baseFormat
== GL_DEPTH_STENCIL
) {
909 att
->Complete
= GL_FALSE
;
910 att_incomplete("bad renderbuffer stencil format");
916 assert(att
->Type
== GL_NONE
);
924 * Test if the given framebuffer object is complete and update its
925 * Status field with the results.
926 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
927 * driver to make hardware-specific validation/completeness checks.
928 * Also update the framebuffer's Width and Height fields if the
929 * framebuffer is complete.
932 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
933 struct gl_framebuffer
*fb
)
936 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
937 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
938 GLint numSamples
= -1;
939 GLint fixedSampleLocations
= -1;
942 /* Covers max_layer_count, is_layered, and layer_tex_target */
943 bool layer_info_valid
= false;
944 GLuint max_layer_count
= 0, att_layer_count
;
945 bool is_layered
= false;
946 GLenum layer_tex_target
= 0;
947 bool has_depth_attachment
= false;
948 bool has_stencil_attachment
= false;
950 assert(_mesa_is_user_fbo(fb
));
952 /* we're changing framebuffer fields here */
953 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
958 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
959 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
960 fb
->_HasAttachments
= true;
962 /* Start at -2 to more easily loop over all attachment points.
967 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
968 struct gl_renderbuffer_attachment
*att
;
970 mesa_format attFormat
;
971 GLenum att_tex_target
= GL_NONE
;
974 * XXX for ARB_fbo, only check color buffers that are named by
975 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
978 /* check for attachment completeness
981 att
= &fb
->Attachment
[BUFFER_DEPTH
];
982 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
983 if (!att
->Complete
) {
984 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
985 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
987 } else if (att
->Type
!= GL_NONE
) {
988 has_depth_attachment
= true;
992 att
= &fb
->Attachment
[BUFFER_STENCIL
];
993 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
994 if (!att
->Complete
) {
995 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
996 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
998 } else if (att
->Type
!= GL_NONE
) {
999 has_stencil_attachment
= true;
1003 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
1004 test_attachment_completeness(ctx
, GL_COLOR
, att
);
1005 if (!att
->Complete
) {
1006 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
1007 fbo_incomplete(ctx
, "color attachment incomplete", i
);
1012 /* get width, height, format of the renderbuffer/texture
1014 if (att
->Type
== GL_TEXTURE
) {
1015 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
1016 att_tex_target
= att
->Texture
->Target
;
1017 minWidth
= MIN2(minWidth
, texImg
->Width
);
1018 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
1019 minHeight
= MIN2(minHeight
, texImg
->Height
);
1020 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
1021 f
= texImg
->_BaseFormat
;
1022 attFormat
= texImg
->TexFormat
;
1025 if (!is_format_color_renderable(ctx
, attFormat
,
1026 texImg
->InternalFormat
) &&
1027 !is_legal_depth_format(ctx
, f
) &&
1028 f
!= GL_STENCIL_INDEX
) {
1029 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
;
1030 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
1035 numSamples
= texImg
->NumSamples
;
1036 else if (numSamples
!= texImg
->NumSamples
) {
1037 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1038 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1042 if (fixedSampleLocations
< 0)
1043 fixedSampleLocations
= texImg
->FixedSampleLocations
;
1044 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
1045 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1046 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1050 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1051 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
1052 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
1053 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
1054 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
1055 f
= att
->Renderbuffer
->InternalFormat
;
1056 attFormat
= att
->Renderbuffer
->Format
;
1060 numSamples
= att
->Renderbuffer
->NumSamples
;
1061 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
1062 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1063 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1067 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1068 if (fixedSampleLocations
< 0)
1069 fixedSampleLocations
= GL_TRUE
;
1070 else if (fixedSampleLocations
!= GL_TRUE
) {
1071 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1072 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1077 assert(att
->Type
== GL_NONE
);
1081 /* check if integer color */
1082 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1084 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1086 GLenum type
= _mesa_get_format_datatype(attFormat
);
1088 fb
->_AllColorBuffersFixedPoint
=
1089 fb
->_AllColorBuffersFixedPoint
&&
1090 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1092 fb
->_HasSNormOrFloatColorBuffer
=
1093 fb
->_HasSNormOrFloatColorBuffer
||
1094 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1097 /* Error-check width, height, format */
1098 if (numImages
== 1) {
1105 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1106 /* check that width, height, format are same */
1107 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1108 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1109 fbo_incomplete(ctx
, "width or height mismatch", -1);
1112 /* check that all color buffers are the same format */
1113 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1114 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1115 fbo_incomplete(ctx
, "format mismatch", -1);
1121 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1123 if (att
->Type
== GL_RENDERBUFFER
&&
1124 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1125 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1126 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1130 /* Check that layered rendering is consistent. */
1132 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1133 att_layer_count
= 6;
1134 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1135 att_layer_count
= att
->Renderbuffer
->Height
;
1137 att_layer_count
= att
->Renderbuffer
->Depth
;
1139 att_layer_count
= 0;
1141 if (!layer_info_valid
) {
1142 is_layered
= att
->Layered
;
1143 max_layer_count
= att_layer_count
;
1144 layer_tex_target
= att_tex_target
;
1145 layer_info_valid
= true;
1146 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1147 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1148 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1150 } else if (is_layered
!= att
->Layered
) {
1151 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1153 "framebuffer attachment layer mode is inconsistent",
1156 } else if (att_layer_count
> max_layer_count
) {
1157 max_layer_count
= att_layer_count
;
1161 * The extension GL_ARB_framebuffer_no_attachments places additional
1162 * requirement on each attachment. Those additional requirements are
1163 * tighter that those of previous versions of GL. In interest of better
1164 * compatibility, we will not enforce these restrictions. For the record
1165 * those additional restrictions are quoted below:
1167 * "The width and height of image are greater than zero and less than or
1168 * equal to the values of the implementation-dependent limits
1169 * MAX_FRAMEBUFFER_WIDTH and MAX_FRAMEBUFFER_HEIGHT, respectively."
1171 * "If <image> is a three-dimensional texture or a one- or two-dimensional
1172 * array texture and the attachment is layered, the depth or layer count
1173 * of the texture is less than or equal to the implementation-dependent
1174 * limit MAX_FRAMEBUFFER_LAYERS."
1176 * "If image has multiple samples, its sample count is less than or equal
1177 * to the value of the implementation-dependent limit
1178 * MAX_FRAMEBUFFER_SAMPLES."
1180 * The same requirements are also in place for GL 4.5,
1181 * Section 9.4.1 "Framebuffer Attachment Completeness", pg 310-311
1185 fb
->MaxNumLayers
= max_layer_count
;
1187 if (numImages
== 0) {
1188 fb
->_HasAttachments
= false;
1190 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1191 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1192 fbo_incomplete(ctx
, "no attachments", -1);
1196 if (fb
->DefaultGeometry
.Width
== 0 || fb
->DefaultGeometry
.Height
== 0) {
1197 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1198 fbo_incomplete(ctx
, "no attachments and default width or height is 0", -1);
1203 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1204 /* Check that all DrawBuffers are present */
1205 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1206 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1207 const struct gl_renderbuffer_attachment
*att
1208 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1210 if (att
->Type
== GL_NONE
) {
1211 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1212 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1218 /* Check that the ReadBuffer is present */
1219 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1220 const struct gl_renderbuffer_attachment
*att
1221 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1223 if (att
->Type
== GL_NONE
) {
1224 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1225 fbo_incomplete(ctx
, "missing readbuffer", -1);
1231 /* The OpenGL ES3 spec, in chapter 9.4. FRAMEBUFFER COMPLETENESS, says:
1233 * "Depth and stencil attachments, if present, are the same image."
1235 * This restriction is not present in the OpenGL ES2 spec.
1237 if (_mesa_is_gles3(ctx
) &&
1238 has_stencil_attachment
&& has_depth_attachment
&&
1239 !_mesa_has_depthstencil_combined(fb
)) {
1240 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1241 fbo_incomplete(ctx
, "Depth and stencil attachments must be the same image", -1);
1245 /* Provisionally set status = COMPLETE ... */
1246 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1248 /* ... but the driver may say the FB is incomplete.
1249 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1252 if (ctx
->Driver
.ValidateFramebuffer
) {
1253 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1254 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1255 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1261 * Note that if ARB_framebuffer_object is supported and the attached
1262 * renderbuffers/textures are different sizes, the framebuffer
1263 * width/height will be set to the smallest width/height.
1265 if (numImages
!= 0) {
1266 fb
->Width
= minWidth
;
1267 fb
->Height
= minHeight
;
1270 /* finally, update the visual info for the framebuffer */
1271 _mesa_update_framebuffer_visual(ctx
, fb
);
1275 GLboolean GLAPIENTRY
1276 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1278 GET_CURRENT_CONTEXT(ctx
);
1279 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1281 struct gl_renderbuffer
*rb
=
1282 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1283 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1290 static struct gl_renderbuffer
*
1291 allocate_renderbuffer(struct gl_context
*ctx
, GLuint renderbuffer
,
1294 struct gl_renderbuffer
*newRb
;
1296 /* create new renderbuffer object */
1297 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1299 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1302 assert(newRb
->AllocStorage
);
1303 mtx_lock(&ctx
->Shared
->Mutex
);
1304 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1305 newRb
->RefCount
= 1; /* referenced by hash table */
1306 mtx_unlock(&ctx
->Shared
->Mutex
);
1313 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1315 struct gl_renderbuffer
*newRb
;
1316 GET_CURRENT_CONTEXT(ctx
);
1318 if (target
!= GL_RENDERBUFFER_EXT
) {
1319 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1323 /* No need to flush here since the render buffer binding has no
1324 * effect on rendering state.
1328 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1329 if (newRb
== &DummyRenderbuffer
) {
1330 /* ID was reserved, but no real renderbuffer object made yet */
1333 else if (!newRb
&& !allow_user_names
) {
1334 /* All RB IDs must be Gen'd */
1335 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1340 newRb
= allocate_renderbuffer(ctx
, renderbuffer
, "glBindRenderbufferEXT");
1347 assert(newRb
!= &DummyRenderbuffer
);
1349 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1353 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1355 GET_CURRENT_CONTEXT(ctx
);
1357 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1358 * entry point, but they allow the use of user-generated names.
1360 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1364 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1366 /* This function should not be in the dispatch table for core profile /
1367 * OpenGL 3.1, so execution should never get here in those cases -- no
1368 * need for an explicit test.
1370 bind_renderbuffer(target
, renderbuffer
, true);
1374 framebuffer_parameteri(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1375 GLenum pname
, GLint param
, const char *func
)
1378 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1379 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferWidth
)
1380 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1382 fb
->DefaultGeometry
.Width
= param
;
1384 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1385 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferHeight
)
1386 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1388 fb
->DefaultGeometry
.Height
= param
;
1390 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1392 * According to the OpenGL ES 3.1 specification section 9.2.1, the
1393 * GL_FRAMEBUFFER_DEFAULT_LAYERS parameter name is not supported.
1395 if (_mesa_is_gles31(ctx
)) {
1396 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1399 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferLayers
)
1400 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1402 fb
->DefaultGeometry
.Layers
= param
;
1404 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1405 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferSamples
)
1406 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1408 fb
->DefaultGeometry
.NumSamples
= param
;
1410 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1411 fb
->DefaultGeometry
.FixedSampleLocations
= param
;
1414 _mesa_error(ctx
, GL_INVALID_ENUM
,
1415 "%s(pname=0x%x)", func
, pname
);
1418 invalidate_framebuffer(fb
);
1419 ctx
->NewState
|= _NEW_BUFFERS
;
1423 _mesa_FramebufferParameteri(GLenum target
, GLenum pname
, GLint param
)
1425 GET_CURRENT_CONTEXT(ctx
);
1426 struct gl_framebuffer
*fb
;
1428 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1429 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1430 "glFramebufferParameteriv not supported "
1431 "(ARB_framebuffer_no_attachments not implemented)");
1435 fb
= get_framebuffer_target(ctx
, target
);
1437 _mesa_error(ctx
, GL_INVALID_ENUM
,
1438 "glFramebufferParameteri(target=0x%x)", target
);
1442 /* check framebuffer binding */
1443 if (_mesa_is_winsys_fbo(fb
)) {
1444 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1445 "glFramebufferParameteri");
1449 framebuffer_parameteri(ctx
, fb
, pname
, param
, "glFramebufferParameteri");
1453 get_framebuffer_parameteriv(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1454 GLenum pname
, GLint
*params
, const char *func
)
1457 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1458 *params
= fb
->DefaultGeometry
.Width
;
1460 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1461 *params
= fb
->DefaultGeometry
.Height
;
1463 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1465 * According to the OpenGL ES 3.1 specification section 9.2.3, the
1466 * GL_FRAMEBUFFER_LAYERS parameter name is not supported.
1468 if (_mesa_is_gles31(ctx
)) {
1469 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1472 *params
= fb
->DefaultGeometry
.Layers
;
1474 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1475 *params
= fb
->DefaultGeometry
.NumSamples
;
1477 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1478 *params
= fb
->DefaultGeometry
.FixedSampleLocations
;
1481 _mesa_error(ctx
, GL_INVALID_ENUM
,
1482 "%s(pname=0x%x)", func
, pname
);
1487 _mesa_GetFramebufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1489 GET_CURRENT_CONTEXT(ctx
);
1490 struct gl_framebuffer
*fb
;
1492 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1493 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1494 "glGetFramebufferParameteriv not supported "
1495 "(ARB_framebuffer_no_attachments not implemented)");
1499 fb
= get_framebuffer_target(ctx
, target
);
1501 _mesa_error(ctx
, GL_INVALID_ENUM
,
1502 "glGetFramebufferParameteriv(target=0x%x)", target
);
1506 /* check framebuffer binding */
1507 if (_mesa_is_winsys_fbo(fb
)) {
1508 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1509 "glGetFramebufferParameteriv");
1513 get_framebuffer_parameteriv(ctx
, fb
, pname
, params
,
1514 "glGetFramebufferParameteriv");
1519 * Remove the specified renderbuffer or texture from any attachment point in
1523 * \c true if the renderbuffer was detached from an attachment point. \c
1527 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1528 struct gl_framebuffer
*fb
,
1532 bool progress
= false;
1534 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1535 if (fb
->Attachment
[i
].Texture
== att
1536 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1537 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1542 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1543 * Completeness," of the OpenGL 3.1 spec says:
1545 * "Performing any of the following actions may change whether the
1546 * framebuffer is considered complete or incomplete:
1550 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1551 * containing an image that is attached to a framebuffer object
1552 * that is bound to the framebuffer."
1555 invalidate_framebuffer(fb
);
1562 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1565 GET_CURRENT_CONTEXT(ctx
);
1568 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteRenderbuffers(n < 0)");
1572 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1574 for (i
= 0; i
< n
; i
++) {
1575 if (renderbuffers
[i
] > 0) {
1576 struct gl_renderbuffer
*rb
;
1577 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1579 /* check if deleting currently bound renderbuffer object */
1580 if (rb
== ctx
->CurrentRenderbuffer
) {
1582 assert(rb
->RefCount
>= 2);
1583 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1586 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1587 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1588 * of the OpenGL 3.1 spec says:
1590 * "If a renderbuffer object is deleted while its image is
1591 * attached to one or more attachment points in the currently
1592 * bound framebuffer, then it is as if FramebufferRenderbuffer
1593 * had been called, with a renderbuffer of 0, for each
1594 * attachment point to which this image was attached in the
1595 * currently bound framebuffer. In other words, this
1596 * renderbuffer image is first detached from all attachment
1597 * points in the currently bound framebuffer. Note that the
1598 * renderbuffer image is specifically not detached from any
1599 * non-bound framebuffers. Detaching the image from any
1600 * non-bound framebuffers is the responsibility of the
1603 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1604 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1606 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1607 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1608 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1611 /* Remove from hash table immediately, to free the ID.
1612 * But the object will not be freed until it's no longer
1613 * referenced anywhere else.
1615 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1617 if (rb
!= &DummyRenderbuffer
) {
1618 /* no longer referenced by hash table */
1619 _mesa_reference_renderbuffer(&rb
, NULL
);
1627 create_render_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*renderbuffers
,
1630 const char *func
= dsa
? "glCreateRenderbuffers" : "glGenRenderbuffers";
1635 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n<0)", func
);
1642 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1644 for (i
= 0; i
< n
; i
++) {
1645 GLuint name
= first
+ i
;
1646 renderbuffers
[i
] = name
;
1649 allocate_renderbuffer(ctx
, name
, func
);
1651 /* insert a dummy renderbuffer into the hash table */
1652 mtx_lock(&ctx
->Shared
->Mutex
);
1653 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1654 mtx_unlock(&ctx
->Shared
->Mutex
);
1661 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1663 GET_CURRENT_CONTEXT(ctx
);
1664 create_render_buffers(ctx
, n
, renderbuffers
, false);
1669 _mesa_CreateRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1671 GET_CURRENT_CONTEXT(ctx
);
1672 create_render_buffers(ctx
, n
, renderbuffers
, true);
1677 * Given an internal format token for a render buffer, return the
1678 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1679 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1680 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1682 * This is similar to _mesa_base_tex_format() but the set of valid
1683 * internal formats is different.
1685 * Note that even if a format is determined to be legal here, validation
1686 * of the FBO may fail if the format is not supported by the driver/GPU.
1688 * \param internalFormat as passed to glRenderbufferStorage()
1689 * \return the base internal format, or 0 if internalFormat is illegal
1692 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1695 * Notes: some formats such as alpha, luminance, etc. were added
1696 * with GL_ARB_framebuffer_object.
1698 switch (internalFormat
) {
1704 return (ctx
->API
== API_OPENGL_COMPAT
&&
1705 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1709 case GL_LUMINANCE12
:
1710 case GL_LUMINANCE16
:
1711 return (ctx
->API
== API_OPENGL_COMPAT
&&
1712 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1713 case GL_LUMINANCE_ALPHA
:
1714 case GL_LUMINANCE4_ALPHA4
:
1715 case GL_LUMINANCE6_ALPHA2
:
1716 case GL_LUMINANCE8_ALPHA8
:
1717 case GL_LUMINANCE12_ALPHA4
:
1718 case GL_LUMINANCE12_ALPHA12
:
1719 case GL_LUMINANCE16_ALPHA16
:
1720 return (ctx
->API
== API_OPENGL_COMPAT
&&
1721 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1725 case GL_INTENSITY12
:
1726 case GL_INTENSITY16
:
1727 return (ctx
->API
== API_OPENGL_COMPAT
&&
1728 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1738 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1740 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1749 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1751 case GL_SRGB8_ALPHA8_EXT
:
1752 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1753 case GL_STENCIL_INDEX
:
1754 case GL_STENCIL_INDEX1_EXT
:
1755 case GL_STENCIL_INDEX4_EXT
:
1756 case GL_STENCIL_INDEX16_EXT
:
1757 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1758 * OpenGL ES, but Mesa does not currently support them.
1760 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1761 case GL_STENCIL_INDEX8_EXT
:
1762 return GL_STENCIL_INDEX
;
1763 case GL_DEPTH_COMPONENT
:
1764 case GL_DEPTH_COMPONENT32
:
1765 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1766 case GL_DEPTH_COMPONENT16
:
1767 case GL_DEPTH_COMPONENT24
:
1768 return GL_DEPTH_COMPONENT
;
1769 case GL_DEPTH_STENCIL
:
1770 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1771 case GL_DEPTH24_STENCIL8
:
1772 return GL_DEPTH_STENCIL
;
1773 case GL_DEPTH_COMPONENT32F
:
1774 return ctx
->Version
>= 30
1775 || (ctx
->API
== API_OPENGL_COMPAT
&&
1776 ctx
->Extensions
.ARB_depth_buffer_float
)
1777 ? GL_DEPTH_COMPONENT
: 0;
1778 case GL_DEPTH32F_STENCIL8
:
1779 return ctx
->Version
>= 30
1780 || (ctx
->API
== API_OPENGL_COMPAT
&&
1781 ctx
->Extensions
.ARB_depth_buffer_float
)
1782 ? GL_DEPTH_STENCIL
: 0;
1785 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1788 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1792 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1795 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1797 /* signed normalized texture formats */
1801 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1806 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1810 case GL_RGB16_SNORM
:
1811 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1814 case GL_RGBA8_SNORM
:
1815 case GL_RGBA16_SNORM
:
1816 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1818 case GL_ALPHA_SNORM
:
1819 case GL_ALPHA8_SNORM
:
1820 case GL_ALPHA16_SNORM
:
1821 return ctx
->API
== API_OPENGL_COMPAT
&&
1822 ctx
->Extensions
.EXT_texture_snorm
&&
1823 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1824 case GL_LUMINANCE_SNORM
:
1825 case GL_LUMINANCE8_SNORM
:
1826 case GL_LUMINANCE16_SNORM
:
1827 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1829 case GL_LUMINANCE_ALPHA_SNORM
:
1830 case GL_LUMINANCE8_ALPHA8_SNORM
:
1831 case GL_LUMINANCE16_ALPHA16_SNORM
:
1832 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1833 ? GL_LUMINANCE_ALPHA
: 0;
1834 case GL_INTENSITY_SNORM
:
1835 case GL_INTENSITY8_SNORM
:
1836 case GL_INTENSITY16_SNORM
:
1837 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1842 return ((_mesa_is_desktop_gl(ctx
) &&
1843 ctx
->Extensions
.ARB_texture_rg
&&
1844 ctx
->Extensions
.ARB_texture_float
) ||
1845 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1849 return ((_mesa_is_desktop_gl(ctx
) &&
1850 ctx
->Extensions
.ARB_texture_rg
&&
1851 ctx
->Extensions
.ARB_texture_float
) ||
1852 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1856 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1860 return ((_mesa_is_desktop_gl(ctx
) &&
1861 ctx
->Extensions
.ARB_texture_float
) ||
1862 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1864 case GL_ALPHA16F_ARB
:
1865 case GL_ALPHA32F_ARB
:
1866 return ctx
->API
== API_OPENGL_COMPAT
&&
1867 ctx
->Extensions
.ARB_texture_float
&&
1868 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1869 case GL_LUMINANCE16F_ARB
:
1870 case GL_LUMINANCE32F_ARB
:
1871 return ctx
->API
== API_OPENGL_COMPAT
&&
1872 ctx
->Extensions
.ARB_texture_float
&&
1873 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1874 case GL_LUMINANCE_ALPHA16F_ARB
:
1875 case GL_LUMINANCE_ALPHA32F_ARB
:
1876 return ctx
->API
== API_OPENGL_COMPAT
&&
1877 ctx
->Extensions
.ARB_texture_float
&&
1878 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1879 case GL_INTENSITY16F_ARB
:
1880 case GL_INTENSITY32F_ARB
:
1881 return ctx
->API
== API_OPENGL_COMPAT
&&
1882 ctx
->Extensions
.ARB_texture_float
&&
1883 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1884 case GL_R11F_G11F_B10F
:
1885 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1886 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1889 case GL_RGBA8UI_EXT
:
1890 case GL_RGBA16UI_EXT
:
1891 case GL_RGBA32UI_EXT
:
1893 case GL_RGBA16I_EXT
:
1894 case GL_RGBA32I_EXT
:
1895 return ctx
->Version
>= 30
1896 || (_mesa_is_desktop_gl(ctx
) &&
1897 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1900 case GL_RGB16UI_EXT
:
1901 case GL_RGB32UI_EXT
:
1905 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1913 return ctx
->Version
>= 30
1914 || (_mesa_is_desktop_gl(ctx
) &&
1915 ctx
->Extensions
.ARB_texture_rg
&&
1916 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1924 return ctx
->Version
>= 30
1925 || (_mesa_is_desktop_gl(ctx
) &&
1926 ctx
->Extensions
.ARB_texture_rg
&&
1927 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1929 case GL_INTENSITY8I_EXT
:
1930 case GL_INTENSITY8UI_EXT
:
1931 case GL_INTENSITY16I_EXT
:
1932 case GL_INTENSITY16UI_EXT
:
1933 case GL_INTENSITY32I_EXT
:
1934 case GL_INTENSITY32UI_EXT
:
1935 return ctx
->API
== API_OPENGL_COMPAT
&&
1936 ctx
->Extensions
.EXT_texture_integer
&&
1937 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1939 case GL_LUMINANCE8I_EXT
:
1940 case GL_LUMINANCE8UI_EXT
:
1941 case GL_LUMINANCE16I_EXT
:
1942 case GL_LUMINANCE16UI_EXT
:
1943 case GL_LUMINANCE32I_EXT
:
1944 case GL_LUMINANCE32UI_EXT
:
1945 return ctx
->API
== API_OPENGL_COMPAT
&&
1946 ctx
->Extensions
.EXT_texture_integer
&&
1947 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1949 case GL_LUMINANCE_ALPHA8I_EXT
:
1950 case GL_LUMINANCE_ALPHA8UI_EXT
:
1951 case GL_LUMINANCE_ALPHA16I_EXT
:
1952 case GL_LUMINANCE_ALPHA16UI_EXT
:
1953 case GL_LUMINANCE_ALPHA32I_EXT
:
1954 case GL_LUMINANCE_ALPHA32UI_EXT
:
1955 return ctx
->API
== API_OPENGL_COMPAT
&&
1956 ctx
->Extensions
.EXT_texture_integer
&&
1957 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1959 case GL_ALPHA8I_EXT
:
1960 case GL_ALPHA8UI_EXT
:
1961 case GL_ALPHA16I_EXT
:
1962 case GL_ALPHA16UI_EXT
:
1963 case GL_ALPHA32I_EXT
:
1964 case GL_ALPHA32UI_EXT
:
1965 return ctx
->API
== API_OPENGL_COMPAT
&&
1966 ctx
->Extensions
.EXT_texture_integer
&&
1967 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1970 return (_mesa_is_desktop_gl(ctx
) &&
1971 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1972 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1975 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1984 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1987 invalidate_rb(GLuint key
, void *data
, void *userData
)
1989 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1990 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1992 /* If this is a user-created FBO */
1993 if (_mesa_is_user_fbo(fb
)) {
1995 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1996 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1997 if (att
->Type
== GL_RENDERBUFFER
&&
1998 att
->Renderbuffer
== rb
) {
1999 /* Mark fb status as indeterminate to force re-validation */
2008 /** sentinal value, see below */
2009 #define NO_SAMPLES 1000
2013 * Helper function used by renderbuffer_storage_direct() and
2014 * renderbuffer_storage_target().
2015 * samples will be NO_SAMPLES if called by a non-multisample function.
2018 renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2019 GLenum internalFormat
, GLsizei width
,
2020 GLsizei height
, GLsizei samples
, const char *func
)
2023 GLenum sample_count_error
;
2025 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
2026 if (baseFormat
== 0) {
2027 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
2028 func
, _mesa_enum_to_string(internalFormat
));
2032 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2033 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid width %d)", func
,
2038 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2039 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid height %d)", func
,
2044 if (samples
== NO_SAMPLES
) {
2045 /* NumSamples == 0 indicates non-multisampling */
2049 /* check the sample count;
2050 * note: driver may choose to use more samples than what's requested
2052 sample_count_error
= _mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
2053 internalFormat
, samples
);
2055 /* Section 2.5 (GL Errors) of OpenGL 3.0 specification, page 16:
2057 * "If a negative number is provided where an argument of type sizei or
2058 * sizeiptr is specified, the error INVALID VALUE is generated."
2061 sample_count_error
= GL_INVALID_VALUE
;
2064 if (sample_count_error
!= GL_NO_ERROR
) {
2065 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
2070 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2072 if (rb
->InternalFormat
== internalFormat
&&
2073 rb
->Width
== (GLuint
) width
&&
2074 rb
->Height
== (GLuint
) height
&&
2075 rb
->NumSamples
== samples
) {
2076 /* no change in allocation needed */
2080 /* These MUST get set by the AllocStorage func */
2081 rb
->Format
= MESA_FORMAT_NONE
;
2082 rb
->NumSamples
= samples
;
2084 /* Now allocate the storage */
2085 assert(rb
->AllocStorage
);
2086 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
2087 /* No error - check/set fields now */
2088 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
2089 assert(rb
->Width
== (GLuint
) width
);
2090 assert(rb
->Height
== (GLuint
) height
);
2091 rb
->InternalFormat
= internalFormat
;
2092 rb
->_BaseFormat
= baseFormat
;
2093 assert(rb
->_BaseFormat
!= 0);
2096 /* Probably ran out of memory - clear the fields */
2099 rb
->Format
= MESA_FORMAT_NONE
;
2100 rb
->InternalFormat
= GL_NONE
;
2101 rb
->_BaseFormat
= GL_NONE
;
2105 /* Invalidate the framebuffers the renderbuffer is attached in. */
2106 if (rb
->AttachedAnytime
) {
2107 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
2112 * Helper function used by _mesa_NamedRenderbufferStorage*().
2113 * samples will be NO_SAMPLES if called by a non-multisample function.
2116 renderbuffer_storage_named(GLuint renderbuffer
, GLenum internalFormat
,
2117 GLsizei width
, GLsizei height
, GLsizei samples
,
2120 GET_CURRENT_CONTEXT(ctx
);
2122 if (MESA_VERBOSE
& VERBOSE_API
) {
2123 if (samples
== NO_SAMPLES
)
2124 _mesa_debug(ctx
, "%s(%u, %s, %d, %d)\n",
2126 _mesa_enum_to_string(internalFormat
),
2129 _mesa_debug(ctx
, "%s(%u, %s, %d, %d, %d)\n",
2131 _mesa_enum_to_string(internalFormat
),
2132 width
, height
, samples
);
2135 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2136 if (!rb
|| rb
== &DummyRenderbuffer
) {
2137 /* ID was reserved, but no real renderbuffer object made yet */
2138 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(invalid renderbuffer %u)",
2139 func
, renderbuffer
);
2143 renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
, func
);
2147 * Helper function used by _mesa_RenderbufferStorage() and
2148 * _mesa_RenderbufferStorageMultisample().
2149 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
2152 renderbuffer_storage_target(GLenum target
, GLenum internalFormat
,
2153 GLsizei width
, GLsizei height
, GLsizei samples
,
2156 GET_CURRENT_CONTEXT(ctx
);
2158 if (MESA_VERBOSE
& VERBOSE_API
) {
2159 if (samples
== NO_SAMPLES
)
2160 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
2162 _mesa_enum_to_string(target
),
2163 _mesa_enum_to_string(internalFormat
),
2166 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
2168 _mesa_enum_to_string(target
),
2169 _mesa_enum_to_string(internalFormat
),
2170 width
, height
, samples
);
2173 if (target
!= GL_RENDERBUFFER_EXT
) {
2174 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
2178 if (!ctx
->CurrentRenderbuffer
) {
2179 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(no renderbuffer bound)",
2184 renderbuffer_storage(ctx
, ctx
->CurrentRenderbuffer
, internalFormat
, width
,
2185 height
, samples
, func
);
2190 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
2192 struct gl_renderbuffer
*rb
;
2193 GET_CURRENT_CONTEXT(ctx
);
2195 if (!ctx
->Extensions
.OES_EGL_image
) {
2196 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2197 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
2201 if (target
!= GL_RENDERBUFFER
) {
2202 _mesa_error(ctx
, GL_INVALID_ENUM
,
2203 "EGLImageTargetRenderbufferStorageOES");
2207 rb
= ctx
->CurrentRenderbuffer
;
2209 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2210 "EGLImageTargetRenderbufferStorageOES");
2214 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2216 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
2221 * Helper function for _mesa_GetRenderbufferParameteriv() and
2222 * _mesa_GetFramebufferAttachmentParameteriv()
2223 * We have to be careful to respect the base format. For example, if a
2224 * renderbuffer/texture was created with internalFormat=GL_RGB but the
2225 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
2226 * we need to return zero.
2229 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
2231 if (_mesa_base_format_has_channel(baseFormat
, pname
))
2232 return _mesa_get_format_bits(format
, pname
);
2240 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
2241 GLsizei width
, GLsizei height
)
2243 /* GL_ARB_fbo says calling this function is equivalent to calling
2244 * glRenderbufferStorageMultisample() with samples=0. We pass in
2245 * a token value here just for error reporting purposes.
2247 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2248 NO_SAMPLES
, "glRenderbufferStorage");
2253 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
2254 GLenum internalFormat
,
2255 GLsizei width
, GLsizei height
)
2257 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2258 samples
, "glRenderbufferStorageMultisample");
2263 * OpenGL ES version of glRenderBufferStorage.
2266 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
2267 GLsizei width
, GLsizei height
)
2269 switch (internalFormat
) {
2271 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
2272 /* choose a closest format */
2273 internalFormat
= GL_RGB5
;
2279 renderbuffer_storage_target(target
, internalFormat
, width
, height
, 0,
2280 "glRenderbufferStorageEXT");
2284 _mesa_NamedRenderbufferStorage(GLuint renderbuffer
, GLenum internalformat
,
2285 GLsizei width
, GLsizei height
)
2287 /* GL_ARB_fbo says calling this function is equivalent to calling
2288 * glRenderbufferStorageMultisample() with samples=0. We pass in
2289 * a token value here just for error reporting purposes.
2291 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2292 NO_SAMPLES
, "glNamedRenderbufferStorage");
2296 _mesa_NamedRenderbufferStorageMultisample(GLuint renderbuffer
, GLsizei samples
,
2297 GLenum internalformat
,
2298 GLsizei width
, GLsizei height
)
2300 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2302 "glNamedRenderbufferStorageMultisample");
2307 get_render_buffer_parameteriv(struct gl_context
*ctx
,
2308 struct gl_renderbuffer
*rb
, GLenum pname
,
2309 GLint
*params
, const char *func
)
2311 /* No need to flush here since we're just quering state which is
2312 * not effected by rendering.
2316 case GL_RENDERBUFFER_WIDTH_EXT
:
2317 *params
= rb
->Width
;
2319 case GL_RENDERBUFFER_HEIGHT_EXT
:
2320 *params
= rb
->Height
;
2322 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
2323 *params
= rb
->InternalFormat
;
2325 case GL_RENDERBUFFER_RED_SIZE_EXT
:
2326 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
2327 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
2328 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
2329 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
2330 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
2331 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
2333 case GL_RENDERBUFFER_SAMPLES
:
2334 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
2335 || _mesa_is_gles3(ctx
)) {
2336 *params
= rb
->NumSamples
;
2341 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname=%s)", func
,
2342 _mesa_enum_to_string(pname
));
2349 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2351 GET_CURRENT_CONTEXT(ctx
);
2353 if (target
!= GL_RENDERBUFFER_EXT
) {
2354 _mesa_error(ctx
, GL_INVALID_ENUM
,
2355 "glGetRenderbufferParameterivEXT(target)");
2359 if (!ctx
->CurrentRenderbuffer
) {
2360 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetRenderbufferParameterivEXT"
2361 "(no renderbuffer bound)");
2365 get_render_buffer_parameteriv(ctx
, ctx
->CurrentRenderbuffer
, pname
,
2366 params
, "glGetRenderbufferParameteriv");
2371 _mesa_GetNamedRenderbufferParameteriv(GLuint renderbuffer
, GLenum pname
,
2374 GET_CURRENT_CONTEXT(ctx
);
2376 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2377 if (!rb
|| rb
== &DummyRenderbuffer
) {
2378 /* ID was reserved, but no real renderbuffer object made yet */
2379 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetNamedRenderbufferParameteriv"
2380 "(invalid renderbuffer %i)", renderbuffer
);
2384 get_render_buffer_parameteriv(ctx
, rb
, pname
, params
,
2385 "glGetNamedRenderbufferParameteriv");
2389 GLboolean GLAPIENTRY
2390 _mesa_IsFramebuffer(GLuint framebuffer
)
2392 GET_CURRENT_CONTEXT(ctx
);
2393 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2395 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2396 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
2404 * Check if any of the attachments of the given framebuffer are textures
2405 * (render to texture). Call ctx->Driver.RenderTexture() for such
2409 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2412 assert(ctx
->Driver
.RenderTexture
);
2414 if (_mesa_is_winsys_fbo(fb
))
2415 return; /* can't render to texture with winsys framebuffers */
2417 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2418 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2419 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2420 && driver_RenderTexture_is_safe(att
)) {
2421 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2428 * Examine all the framebuffer's attachments to see if any are textures.
2429 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2430 * notify the device driver that the texture image may have changed.
2433 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2435 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2436 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2439 if (ctx
->Driver
.FinishRenderTexture
) {
2441 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2442 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2443 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2444 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2445 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2453 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2455 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2456 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2457 GLboolean bindReadBuf
, bindDrawBuf
;
2458 GET_CURRENT_CONTEXT(ctx
);
2461 case GL_DRAW_FRAMEBUFFER_EXT
:
2462 bindDrawBuf
= GL_TRUE
;
2463 bindReadBuf
= GL_FALSE
;
2465 case GL_READ_FRAMEBUFFER_EXT
:
2466 bindDrawBuf
= GL_FALSE
;
2467 bindReadBuf
= GL_TRUE
;
2469 case GL_FRAMEBUFFER_EXT
:
2470 bindDrawBuf
= GL_TRUE
;
2471 bindReadBuf
= GL_TRUE
;
2474 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2479 /* Binding a user-created framebuffer object */
2480 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2481 if (newDrawFb
== &DummyFramebuffer
) {
2482 /* ID was reserved, but no real framebuffer object made yet */
2485 else if (!newDrawFb
&& !allow_user_names
) {
2486 /* All FBO IDs must be Gen'd */
2487 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2492 /* create new framebuffer object */
2493 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2495 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2498 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2500 newReadFb
= newDrawFb
;
2503 /* Binding the window system framebuffer (which was originally set
2504 * with MakeCurrent).
2506 newDrawFb
= ctx
->WinSysDrawBuffer
;
2507 newReadFb
= ctx
->WinSysReadBuffer
;
2511 assert(newDrawFb
!= &DummyFramebuffer
);
2513 /* save pointers to current/old framebuffers */
2514 oldDrawFb
= ctx
->DrawBuffer
;
2515 oldReadFb
= ctx
->ReadBuffer
;
2517 /* check if really changing bindings */
2518 if (oldDrawFb
== newDrawFb
)
2519 bindDrawBuf
= GL_FALSE
;
2520 if (oldReadFb
== newReadFb
)
2521 bindReadBuf
= GL_FALSE
;
2524 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2526 * We also check if we're beginning and/or ending render-to-texture.
2527 * When a framebuffer with texture attachments is unbound, call
2528 * ctx->Driver.FinishRenderTexture().
2529 * When a framebuffer with texture attachments is bound, call
2530 * ctx->Driver.RenderTexture().
2532 * Note that if the ReadBuffer has texture attachments we don't consider
2533 * that a render-to-texture case.
2536 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2538 /* check if old readbuffer was render-to-texture */
2539 check_end_texture_render(ctx
, oldReadFb
);
2541 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2545 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2547 /* check if old framebuffer had any texture attachments */
2549 check_end_texture_render(ctx
, oldDrawFb
);
2551 /* check if newly bound framebuffer has any texture attachments */
2552 check_begin_texture_render(ctx
, newDrawFb
);
2554 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2557 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2558 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2563 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2565 GET_CURRENT_CONTEXT(ctx
);
2567 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2568 * point, but they allow the use of user-generated names.
2570 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2575 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2577 /* This function should not be in the dispatch table for core profile /
2578 * OpenGL 3.1, so execution should never get here in those cases -- no
2579 * need for an explicit test.
2581 bind_framebuffer(target
, framebuffer
, true);
2586 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2589 GET_CURRENT_CONTEXT(ctx
);
2592 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteFramebuffers(n < 0)");
2596 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2598 for (i
= 0; i
< n
; i
++) {
2599 if (framebuffers
[i
] > 0) {
2600 struct gl_framebuffer
*fb
;
2601 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2603 assert(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2605 /* check if deleting currently bound framebuffer object */
2606 if (fb
== ctx
->DrawBuffer
) {
2608 assert(fb
->RefCount
>= 2);
2609 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2611 if (fb
== ctx
->ReadBuffer
) {
2613 assert(fb
->RefCount
>= 2);
2614 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2617 /* remove from hash table immediately, to free the ID */
2618 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2620 if (fb
!= &DummyFramebuffer
) {
2621 /* But the object will not be freed until it's no longer
2622 * bound in any context.
2624 _mesa_reference_framebuffer(&fb
, NULL
);
2633 * This is the implementation for glGenFramebuffers and glCreateFramebuffers.
2634 * It is not exposed to the rest of Mesa to encourage the use of
2635 * nameless buffers in driver internals.
2638 create_framebuffers(GLsizei n
, GLuint
*framebuffers
, bool dsa
)
2640 GET_CURRENT_CONTEXT(ctx
);
2643 struct gl_framebuffer
*fb
;
2645 const char *func
= dsa
? "glCreateFramebuffers" : "glGenFramebuffers";
2648 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n < 0)", func
);
2655 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2657 for (i
= 0; i
< n
; i
++) {
2658 GLuint name
= first
+ i
;
2659 framebuffers
[i
] = name
;
2662 fb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffers
[i
]);
2664 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2669 fb
= &DummyFramebuffer
;
2671 mtx_lock(&ctx
->Shared
->Mutex
);
2672 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, fb
);
2673 mtx_unlock(&ctx
->Shared
->Mutex
);
2679 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2681 create_framebuffers(n
, framebuffers
, false);
2686 _mesa_CreateFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2688 create_framebuffers(n
, framebuffers
, true);
2693 _mesa_check_framebuffer_status(struct gl_context
*ctx
,
2694 struct gl_framebuffer
*buffer
)
2696 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2698 if (_mesa_is_winsys_fbo(buffer
)) {
2699 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2700 if (buffer
!= &IncompleteFramebuffer
) {
2701 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2703 return GL_FRAMEBUFFER_UNDEFINED
;
2707 /* No need to flush here */
2709 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2710 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2713 return buffer
->_Status
;
2718 _mesa_CheckFramebufferStatus(GLenum target
)
2720 struct gl_framebuffer
*fb
;
2721 GET_CURRENT_CONTEXT(ctx
);
2723 if (MESA_VERBOSE
& VERBOSE_API
)
2724 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2725 _mesa_enum_to_string(target
));
2727 fb
= get_framebuffer_target(ctx
, target
);
2729 _mesa_error(ctx
, GL_INVALID_ENUM
,
2730 "glCheckFramebufferStatus(invalid target %s)",
2731 _mesa_enum_to_string(target
));
2735 return _mesa_check_framebuffer_status(ctx
, fb
);
2740 _mesa_CheckNamedFramebufferStatus(GLuint framebuffer
, GLenum target
)
2742 struct gl_framebuffer
*fb
;
2743 GET_CURRENT_CONTEXT(ctx
);
2745 /* Validate the target (for conformance's sake) and grab a reference to the
2746 * default framebuffer in case framebuffer = 0.
2747 * Section 9.4 Framebuffer Completeness of the OpenGL 4.5 core spec
2748 * (30.10.2014, PDF page 336) says:
2749 * "If framebuffer is zero, then the status of the default read or
2750 * draw framebuffer (as determined by target) is returned."
2753 case GL_DRAW_FRAMEBUFFER
:
2754 case GL_FRAMEBUFFER
:
2755 fb
= ctx
->WinSysDrawBuffer
;
2757 case GL_READ_FRAMEBUFFER
:
2758 fb
= ctx
->WinSysReadBuffer
;
2761 _mesa_error(ctx
, GL_INVALID_ENUM
,
2762 "glCheckNamedFramebufferStatus(invalid target %s)",
2763 _mesa_enum_to_string(target
));
2768 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
2769 "glCheckNamedFramebufferStatus");
2774 return _mesa_check_framebuffer_status(ctx
, fb
);
2779 * Replicate the src attachment point. Used by framebuffer_texture() when
2780 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2781 * GL_STENCIL_ATTACHMENT.
2784 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2785 gl_buffer_index dst
,
2786 gl_buffer_index src
)
2788 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2789 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2791 assert(src_att
->Texture
!= NULL
);
2792 assert(src_att
->Renderbuffer
!= NULL
);
2794 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2795 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2796 dst_att
->Type
= src_att
->Type
;
2797 dst_att
->Complete
= src_att
->Complete
;
2798 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2799 dst_att
->Zoffset
= src_att
->Zoffset
;
2804 * Common code called by gl*FramebufferTexture*() to retrieve the correct
2805 * texture object pointer.
2807 * \param texObj where the pointer to the texture object is returned. Note
2808 * that a successful call may return texObj = NULL.
2810 * \return true if no errors, false if errors
2813 get_texture_for_framebuffer(struct gl_context
*ctx
, GLuint texture
,
2814 bool layered
, const char *caller
,
2815 struct gl_texture_object
**texObj
)
2817 *texObj
= NULL
; /* This will get returned if texture = 0. */
2822 *texObj
= _mesa_lookup_texture(ctx
, texture
);
2823 if (*texObj
== NULL
|| (*texObj
)->Target
== 0) {
2824 /* Can't render to a non-existent texture object.
2826 * The OpenGL 4.5 core spec (02.02.2015) in Section 9.2 Binding and
2827 * Managing Framebuffer Objects specifies a different error
2828 * depending upon the calling function (PDF pages 325-328).
2829 * *FramebufferTexture (where layered = GL_TRUE) throws invalid
2830 * value, while the other commands throw invalid operation (where
2831 * layered = GL_FALSE).
2833 const GLenum error
= layered
? GL_INVALID_VALUE
:
2834 GL_INVALID_OPERATION
;
2835 _mesa_error(ctx
, error
,
2836 "%s(non-existent texture %u)", caller
, texture
);
2845 * Common code called by gl*FramebufferTexture() to verify the texture target
2846 * and decide whether or not the attachment should truly be considered
2849 * \param layered true if attachment should be considered layered, false if
2852 * \return true if no errors, false if errors
2855 check_layered_texture_target(struct gl_context
*ctx
, GLenum target
,
2856 const char *caller
, GLboolean
*layered
)
2862 case GL_TEXTURE_1D_ARRAY_EXT
:
2863 case GL_TEXTURE_2D_ARRAY_EXT
:
2864 case GL_TEXTURE_CUBE_MAP
:
2865 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2866 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2870 case GL_TEXTURE_RECTANGLE
:
2871 case GL_TEXTURE_2D_MULTISAMPLE
:
2872 /* These texture types are valid to pass to
2873 * glFramebufferTexture(), but since they aren't layered, it
2874 * is equivalent to calling glFramebufferTexture{1D,2D}().
2876 *layered
= GL_FALSE
;
2880 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2881 "%s(invalid texture target %s)", caller
,
2882 _mesa_enum_to_string(target
));
2888 * Common code called by gl*FramebufferTextureLayer() to verify the texture
2891 * \return true if no errors, false if errors
2894 check_texture_target(struct gl_context
*ctx
, GLenum target
,
2897 /* We're being called by glFramebufferTextureLayer().
2898 * The only legal texture types for that function are 3D,
2899 * cube-map, and 1D/2D/cube-map array textures.
2901 * We don't need to check for GL_ARB_texture_cube_map_array because the
2902 * application wouldn't have been able to create a texture with a
2903 * GL_TEXTURE_CUBE_MAP_ARRAY target if the extension were not enabled.
2907 case GL_TEXTURE_1D_ARRAY
:
2908 case GL_TEXTURE_2D_ARRAY
:
2909 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2910 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2912 case GL_TEXTURE_CUBE_MAP
:
2913 /* We don't need to check the extension (GL_ARB_direct_state_access) or
2914 * GL version (4.5) for GL_TEXTURE_CUBE_MAP because DSA is always
2915 * enabled in core profile. This can be called from
2916 * _mesa_FramebufferTextureLayer in compatibility profile (OpenGL 3.0),
2917 * so we do have to check the profile.
2919 return ctx
->API
== API_OPENGL_CORE
;
2922 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2923 "%s(invalid texture target %s)", caller
,
2924 _mesa_enum_to_string(target
));
2930 * Common code called by glFramebufferTexture*D() to verify the texture
2933 * \return true if no errors, false if errors
2936 check_textarget(struct gl_context
*ctx
, int dims
, GLenum target
,
2937 GLenum textarget
, const char *caller
)
2943 switch (textarget
) {
2946 case GL_TEXTURE_1D_ARRAY
:
2947 err
= !ctx
->Extensions
.EXT_texture_array
;
2954 switch (textarget
) {
2957 case GL_TEXTURE_RECTANGLE
:
2958 err
= _mesa_is_gles(ctx
)
2959 || !ctx
->Extensions
.NV_texture_rectangle
;
2961 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2962 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2963 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2964 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2965 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2966 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2967 err
= !ctx
->Extensions
.ARB_texture_cube_map
;
2969 case GL_TEXTURE_2D_ARRAY
:
2970 err
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2971 || !ctx
->Extensions
.EXT_texture_array
;
2973 case GL_TEXTURE_2D_MULTISAMPLE
:
2974 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2975 err
= (_mesa_is_gles(ctx
) ||
2976 !ctx
->Extensions
.ARB_texture_multisample
) &&
2977 !_mesa_is_gles31(ctx
);
2984 if (textarget
!= GL_TEXTURE_3D
)
2992 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2993 "%s(invalid textarget %s)",
2994 caller
, _mesa_enum_to_string(textarget
));
2998 /* Make sure textarget is consistent with the texture's type */
2999 err
= (target
== GL_TEXTURE_CUBE_MAP
) ?
3000 !_mesa_is_cube_face(textarget
): (target
!= textarget
);
3003 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3004 "%s(mismatched texture target)", caller
);
3013 * Common code called by gl*FramebufferTextureLayer() and
3014 * glFramebufferTexture3D() to validate the layer.
3016 * \return true if no errors, false if errors
3019 check_layer(struct gl_context
*ctx
, GLenum target
, GLint layer
,
3022 /* Page 306 (page 328 of the PDF) of the OpenGL 4.5 (Core Profile)
3025 * "An INVALID_VALUE error is generated if texture is non-zero
3026 * and layer is negative."
3029 _mesa_error(ctx
, GL_INVALID_VALUE
,
3030 "%s(layer %u < 0)", caller
, layer
);
3034 if (target
== GL_TEXTURE_3D
) {
3035 const GLuint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
3036 if (layer
>= maxSize
) {
3037 _mesa_error(ctx
, GL_INVALID_VALUE
,
3038 "%s(invalid layer %u)", caller
, layer
);
3042 else if ((target
== GL_TEXTURE_1D_ARRAY
) ||
3043 (target
== GL_TEXTURE_2D_ARRAY
) ||
3044 (target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
3045 (target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
3046 if (layer
>= ctx
->Const
.MaxArrayTextureLayers
) {
3047 _mesa_error(ctx
, GL_INVALID_VALUE
,
3048 "%s(layer %u >= GL_MAX_ARRAY_TEXTURE_LAYERS)",
3053 else if (target
== GL_TEXTURE_CUBE_MAP
) {
3055 _mesa_error(ctx
, GL_INVALID_VALUE
,
3056 "%s(layer %u >= 6)", caller
, layer
);
3066 * Common code called by all gl*FramebufferTexture*() entry points to verify
3069 * \return true if no errors, false if errors
3072 check_level(struct gl_context
*ctx
, GLenum target
, GLint level
,
3076 (level
>= _mesa_max_texture_levels(ctx
, target
))) {
3077 _mesa_error(ctx
, GL_INVALID_VALUE
,
3078 "%s(invalid level %d)", caller
, level
);
3087 _mesa_framebuffer_texture(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
3089 struct gl_texture_object
*texObj
, GLenum textarget
,
3090 GLint level
, GLuint layer
, GLboolean layered
,
3093 struct gl_renderbuffer_attachment
*att
;
3095 /* The window-system framebuffer object is immutable */
3096 if (_mesa_is_winsys_fbo(fb
)) {
3097 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(window-system framebuffer)",
3102 /* Not a hash lookup, so we can afford to get the attachment here. */
3103 att
= get_attachment(ctx
, fb
, attachment
);
3105 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3106 _mesa_enum_to_string(attachment
));
3110 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3112 mtx_lock(&fb
->Mutex
);
3114 if (attachment
== GL_DEPTH_ATTACHMENT
&&
3115 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
3116 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
3117 _mesa_tex_target_to_face(textarget
) ==
3118 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
3119 layer
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
3120 /* The texture object is already attached to the stencil attachment
3121 * point. Don't create a new renderbuffer; just reuse the stencil
3122 * attachment's. This is required to prevent a GL error in
3123 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
3125 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
3127 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
3128 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
3129 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
3130 _mesa_tex_target_to_face(textarget
) ==
3131 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
3132 layer
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
3133 /* As above, but with depth and stencil transposed. */
3134 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
3137 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
3138 level
, layer
, layered
);
3140 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3141 /* Above we created a new renderbuffer and attached it to the
3142 * depth attachment point. Now attach it to the stencil attachment
3145 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3146 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
3151 /* Set the render-to-texture flag. We'll check this flag in
3152 * glTexImage() and friends to determine if we need to revalidate
3153 * any FBOs that might be rendering into this texture.
3154 * This flag never gets cleared since it's non-trivial to determine
3155 * when all FBOs might be done rendering to this texture. That's OK
3156 * though since it's uncommon to render to a texture then repeatedly
3157 * call glTexImage() to change images in the texture.
3159 texObj
->_RenderToTexture
= GL_TRUE
;
3162 remove_attachment(ctx
, att
);
3163 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3164 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3165 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
3169 invalidate_framebuffer(fb
);
3171 mtx_unlock(&fb
->Mutex
);
3176 framebuffer_texture_with_dims(int dims
, GLenum target
,
3177 GLenum attachment
, GLenum textarget
,
3178 GLuint texture
, GLint level
, GLint layer
,
3181 GET_CURRENT_CONTEXT(ctx
);
3182 struct gl_framebuffer
*fb
;
3183 struct gl_texture_object
*texObj
;
3185 /* Get the framebuffer object */
3186 fb
= get_framebuffer_target(ctx
, target
);
3188 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid target %s)", caller
,
3189 _mesa_enum_to_string(target
));
3193 /* Get the texture object */
3194 if (!get_texture_for_framebuffer(ctx
, texture
, false, caller
, &texObj
))
3198 if (!check_textarget(ctx
, dims
, texObj
->Target
, textarget
, caller
))
3201 if ((dims
== 3) && !check_layer(ctx
, texObj
->Target
, layer
, caller
))
3205 if (!check_level(ctx
, textarget
, level
, caller
))
3208 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3209 layer
, GL_FALSE
, caller
);
3214 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
3215 GLenum textarget
, GLuint texture
, GLint level
)
3217 framebuffer_texture_with_dims(1, target
, attachment
, textarget
, texture
,
3218 level
, 0, "glFramebufferTexture1D");
3223 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
3224 GLenum textarget
, GLuint texture
, GLint level
)
3226 framebuffer_texture_with_dims(2, target
, attachment
, textarget
, texture
,
3227 level
, 0, "glFramebufferTexture2D");
3232 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
3233 GLenum textarget
, GLuint texture
,
3234 GLint level
, GLint layer
)
3236 framebuffer_texture_with_dims(3, target
, attachment
, textarget
, texture
,
3237 level
, layer
, "glFramebufferTexture3D");
3242 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
3243 GLuint texture
, GLint level
, GLint layer
)
3245 GET_CURRENT_CONTEXT(ctx
);
3246 struct gl_framebuffer
*fb
;
3247 struct gl_texture_object
*texObj
;
3248 GLenum textarget
= 0;
3250 const char *func
= "glFramebufferTextureLayer";
3252 /* Get the framebuffer object */
3253 fb
= get_framebuffer_target(ctx
, target
);
3255 _mesa_error(ctx
, GL_INVALID_ENUM
,
3256 "glFramebufferTextureLayer(invalid target %s)",
3257 _mesa_enum_to_string(target
));
3261 /* Get the texture object */
3262 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3266 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3269 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3272 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3275 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3276 assert(layer
>= 0 && layer
< 6);
3277 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3282 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3283 layer
, GL_FALSE
, func
);
3288 _mesa_NamedFramebufferTextureLayer(GLuint framebuffer
, GLenum attachment
,
3289 GLuint texture
, GLint level
, GLint layer
)
3291 GET_CURRENT_CONTEXT(ctx
);
3292 struct gl_framebuffer
*fb
;
3293 struct gl_texture_object
*texObj
;
3294 GLenum textarget
= 0;
3296 const char *func
= "glNamedFramebufferTextureLayer";
3298 /* Get the framebuffer object */
3299 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3303 /* Get the texture object */
3304 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3308 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3311 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3314 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3317 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3318 assert(layer
>= 0 && layer
< 6);
3319 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3324 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3325 layer
, GL_FALSE
, func
);
3330 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
3331 GLuint texture
, GLint level
)
3333 GET_CURRENT_CONTEXT(ctx
);
3334 struct gl_framebuffer
*fb
;
3335 struct gl_texture_object
*texObj
;
3336 GLboolean layered
= GL_FALSE
;
3338 const char *func
= "FramebufferTexture";
3340 if (!_mesa_has_geometry_shaders(ctx
)) {
3341 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3342 "unsupported function (glFramebufferTexture) called");
3346 /* Get the framebuffer object */
3347 fb
= get_framebuffer_target(ctx
, target
);
3349 _mesa_error(ctx
, GL_INVALID_ENUM
,
3350 "glFramebufferTexture(invalid target %s)",
3351 _mesa_enum_to_string(target
));
3355 /* Get the texture object */
3356 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3360 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
, &layered
))
3363 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3367 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3373 _mesa_NamedFramebufferTexture(GLuint framebuffer
, GLenum attachment
,
3374 GLuint texture
, GLint level
)
3376 GET_CURRENT_CONTEXT(ctx
);
3377 struct gl_framebuffer
*fb
;
3378 struct gl_texture_object
*texObj
;
3379 GLboolean layered
= GL_FALSE
;
3381 const char *func
= "glNamedFramebufferTexture";
3383 if (!_mesa_has_geometry_shaders(ctx
)) {
3384 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3385 "unsupported function (glNamedFramebufferTexture) called");
3389 /* Get the framebuffer object */
3390 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3394 /* Get the texture object */
3395 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3399 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
,
3403 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3407 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3413 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
3414 struct gl_framebuffer
*fb
,
3416 struct gl_renderbuffer
*rb
,
3419 struct gl_renderbuffer_attachment
*att
;
3421 if (_mesa_is_winsys_fbo(fb
)) {
3422 /* Can't attach new renderbuffers to a window system framebuffer */
3423 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3424 "%s(window-system framebuffer)", func
);
3428 att
= get_attachment(ctx
, fb
, attachment
);
3430 _mesa_error(ctx
, GL_INVALID_ENUM
,
3431 "%s(invalid attachment %s)", func
,
3432 _mesa_enum_to_string(attachment
));
3436 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
3437 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
3438 /* make sure the renderbuffer is a depth/stencil format */
3439 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
3440 if (baseFormat
!= GL_DEPTH_STENCIL
) {
3441 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3442 "%s(renderbuffer is not DEPTH_STENCIL format)", func
);
3447 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3449 assert(ctx
->Driver
.FramebufferRenderbuffer
);
3450 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
3452 /* Some subsequent GL commands may depend on the framebuffer's visual
3453 * after the binding is updated. Update visual info now.
3455 _mesa_update_framebuffer_visual(ctx
, fb
);
3460 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
3461 GLenum renderbuffertarget
,
3462 GLuint renderbuffer
)
3464 struct gl_framebuffer
*fb
;
3465 struct gl_renderbuffer
*rb
;
3466 GET_CURRENT_CONTEXT(ctx
);
3468 fb
= get_framebuffer_target(ctx
, target
);
3470 _mesa_error(ctx
, GL_INVALID_ENUM
,
3471 "glFramebufferRenderbuffer(invalid target %s)",
3472 _mesa_enum_to_string(target
));
3476 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3477 _mesa_error(ctx
, GL_INVALID_ENUM
,
3478 "glFramebufferRenderbuffer(renderbuffertarget is not "
3479 "GL_RENDERBUFFER)");
3484 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3485 "glFramebufferRenderbuffer");
3490 /* remove renderbuffer attachment */
3494 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3495 "glFramebufferRenderbuffer");
3500 _mesa_NamedFramebufferRenderbuffer(GLuint framebuffer
, GLenum attachment
,
3501 GLenum renderbuffertarget
,
3502 GLuint renderbuffer
)
3504 struct gl_framebuffer
*fb
;
3505 struct gl_renderbuffer
*rb
;
3506 GET_CURRENT_CONTEXT(ctx
);
3508 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3509 "glNamedFramebufferRenderbuffer");
3513 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3514 _mesa_error(ctx
, GL_INVALID_ENUM
,
3515 "glNamedFramebufferRenderbuffer(renderbuffertarget is not "
3516 "GL_RENDERBUFFER)");
3521 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3522 "glNamedFramebufferRenderbuffer");
3527 /* remove renderbuffer attachment */
3531 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3532 "glNamedFramebufferRenderbuffer");
3537 _mesa_get_framebuffer_attachment_parameter(struct gl_context
*ctx
,
3538 struct gl_framebuffer
*buffer
,
3539 GLenum attachment
, GLenum pname
,
3540 GLint
*params
, const char *caller
)
3542 const struct gl_renderbuffer_attachment
*att
;
3545 /* The error differs in GL and GLES. */
3546 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
3548 if (_mesa_is_winsys_fbo(buffer
)) {
3549 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
3552 * "If the framebuffer currently bound to target is zero, then
3553 * INVALID_OPERATION is generated."
3555 * The EXT_framebuffer_object spec has the same wording, and the
3556 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
3559 if ((!_mesa_is_desktop_gl(ctx
) ||
3560 !ctx
->Extensions
.ARB_framebuffer_object
)
3561 && !_mesa_is_gles3(ctx
)) {
3562 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3563 "%s(window-system framebuffer)", caller
);
3567 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
3568 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
3569 _mesa_error(ctx
, GL_INVALID_ENUM
,
3570 "%s(invalid attachment %s)", caller
,
3571 _mesa_enum_to_string(attachment
));
3574 /* the default / window-system FBO */
3575 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
3578 /* user-created framebuffer FBO */
3579 att
= get_attachment(ctx
, buffer
, attachment
);
3583 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3584 _mesa_enum_to_string(attachment
));
3588 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3589 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
3590 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
3591 /* This behavior is first specified in OpenGL 4.4 specification.
3593 * From the OpenGL 4.4 spec page 275:
3594 * "This query cannot be performed for a combined depth+stencil
3595 * attachment, since it does not have a single format."
3597 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3598 "%s(GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
3599 " is invalid for depth+stencil attachment)", caller
);
3602 /* the depth and stencil attachments must point to the same buffer */
3603 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
3604 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
3605 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
3606 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3607 "%s(DEPTH/STENCIL attachments differ)", caller
);
3612 /* No need to flush here */
3615 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
3616 /* From the OpenGL spec, 9.2. Binding and Managing Framebuffer Objects:
3618 * "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then
3619 * either no framebuffer is bound to target; or the default framebuffer
3620 * is bound, attachment is DEPTH or STENCIL, and the number of depth or
3621 * stencil bits, respectively, is zero."
3623 *params
= (_mesa_is_winsys_fbo(buffer
) &&
3624 ((attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) ||
3625 (att
->Type
!= GL_NONE
)))
3626 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
3628 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
3629 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
3630 *params
= att
->Renderbuffer
->Name
;
3632 else if (att
->Type
== GL_TEXTURE
) {
3633 *params
= att
->Texture
->Name
;
3636 assert(att
->Type
== GL_NONE
);
3637 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
3640 goto invalid_pname_enum
;
3644 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
3645 if (att
->Type
== GL_TEXTURE
) {
3646 *params
= att
->TextureLevel
;
3648 else if (att
->Type
== GL_NONE
) {
3649 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3650 _mesa_enum_to_string(pname
));
3653 goto invalid_pname_enum
;
3656 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
3657 if (att
->Type
== GL_TEXTURE
) {
3658 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
3659 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
3665 else if (att
->Type
== GL_NONE
) {
3666 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3667 _mesa_enum_to_string(pname
));
3670 goto invalid_pname_enum
;
3673 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
3674 if (ctx
->API
== API_OPENGLES
) {
3675 goto invalid_pname_enum
;
3676 } else if (att
->Type
== GL_NONE
) {
3677 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3678 _mesa_enum_to_string(pname
));
3679 } else if (att
->Type
== GL_TEXTURE
) {
3680 if (att
->Texture
&& (att
->Texture
->Target
== GL_TEXTURE_3D
||
3681 att
->Texture
->Target
== GL_TEXTURE_2D_ARRAY
)) {
3682 *params
= att
->Zoffset
;
3689 goto invalid_pname_enum
;
3692 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
3693 if ((!_mesa_is_desktop_gl(ctx
) ||
3694 !ctx
->Extensions
.ARB_framebuffer_object
)
3695 && !_mesa_is_gles3(ctx
)) {
3696 goto invalid_pname_enum
;
3698 else if (att
->Type
== GL_NONE
) {
3699 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3700 _mesa_enum_to_string(pname
));
3703 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
3705 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
3708 /* According to ARB_framebuffer_sRGB, we should return LINEAR
3709 * if the sRGB conversion is unsupported. */
3710 *params
= GL_LINEAR
;
3714 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
3715 if ((ctx
->API
!= API_OPENGL_COMPAT
||
3716 !ctx
->Extensions
.ARB_framebuffer_object
)
3717 && ctx
->API
!= API_OPENGL_CORE
3718 && !_mesa_is_gles3(ctx
)) {
3719 goto invalid_pname_enum
;
3721 else if (att
->Type
== GL_NONE
) {
3722 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3723 _mesa_enum_to_string(pname
));
3726 mesa_format format
= att
->Renderbuffer
->Format
;
3728 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
3731 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
3732 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
3733 * generate an INVALID_OPERATION error.
3735 if (_mesa_is_gles3(ctx
) &&
3736 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3737 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3739 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
3740 "GL_DEPTH_STENCIL_ATTACHMENT)", caller
);
3744 if (format
== MESA_FORMAT_S_UINT8
) {
3748 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
3749 /* depends on the attachment parameter */
3750 if (attachment
== GL_STENCIL_ATTACHMENT
) {
3758 *params
= _mesa_get_format_datatype(format
);
3762 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
3763 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
3764 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
3765 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
3766 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
3767 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
3768 if ((!_mesa_is_desktop_gl(ctx
) ||
3769 !ctx
->Extensions
.ARB_framebuffer_object
)
3770 && !_mesa_is_gles3(ctx
)) {
3771 goto invalid_pname_enum
;
3773 else if (att
->Type
== GL_NONE
) {
3774 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3775 _mesa_enum_to_string(pname
));
3777 else if (att
->Texture
) {
3778 const struct gl_texture_image
*texImage
=
3779 _mesa_select_tex_image(att
->Texture
, att
->Texture
->Target
,
3782 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
3783 texImage
->TexFormat
);
3789 else if (att
->Renderbuffer
) {
3790 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
3791 att
->Renderbuffer
->Format
);
3794 _mesa_problem(ctx
, "%s: invalid FBO attachment structure", caller
);
3797 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
3798 if (!_mesa_has_geometry_shaders(ctx
)) {
3799 goto invalid_pname_enum
;
3800 } else if (att
->Type
== GL_TEXTURE
) {
3801 *params
= att
->Layered
;
3802 } else if (att
->Type
== GL_NONE
) {
3803 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3804 _mesa_enum_to_string(pname
));
3806 goto invalid_pname_enum
;
3810 goto invalid_pname_enum
;
3816 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname %s)", caller
,
3817 _mesa_enum_to_string(pname
));
3823 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
3824 GLenum pname
, GLint
*params
)
3826 GET_CURRENT_CONTEXT(ctx
);
3827 struct gl_framebuffer
*buffer
;
3829 buffer
= get_framebuffer_target(ctx
, target
);
3831 _mesa_error(ctx
, GL_INVALID_ENUM
,
3832 "glGetFramebufferAttachmentParameteriv(invalid target %s)",
3833 _mesa_enum_to_string(target
));
3837 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3839 "glGetFramebufferAttachmentParameteriv");
3844 _mesa_GetNamedFramebufferAttachmentParameteriv(GLuint framebuffer
,
3846 GLenum pname
, GLint
*params
)
3848 GET_CURRENT_CONTEXT(ctx
);
3849 struct gl_framebuffer
*buffer
;
3852 buffer
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3853 "glGetNamedFramebufferAttachmentParameteriv");
3859 * Section 9.2 Binding and Managing Framebuffer Objects of the OpenGL
3860 * 4.5 core spec (30.10.2014, PDF page 314):
3861 * "If framebuffer is zero, then the default draw framebuffer is
3864 buffer
= ctx
->WinSysDrawBuffer
;
3867 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3869 "glGetNamedFramebufferAttachmentParameteriv");
3874 _mesa_NamedFramebufferParameteri(GLuint framebuffer
, GLenum pname
,
3877 GET_CURRENT_CONTEXT(ctx
);
3878 struct gl_framebuffer
*fb
= NULL
;
3880 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3881 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3882 "glNamedFramebufferParameteri("
3883 "ARB_framebuffer_no_attachments not implemented)");
3887 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3888 "glNamedFramebufferParameteri");
3891 framebuffer_parameteri(ctx
, fb
, pname
, param
,
3892 "glNamedFramebufferParameteriv");
3898 _mesa_GetNamedFramebufferParameteriv(GLuint framebuffer
, GLenum pname
,
3901 GET_CURRENT_CONTEXT(ctx
);
3902 struct gl_framebuffer
*fb
;
3904 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3905 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3906 "glNamedFramebufferParameteriv("
3907 "ARB_framebuffer_no_attachments not implemented)");
3912 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3913 "glGetNamedFramebufferParameteriv");
3915 fb
= ctx
->WinSysDrawBuffer
;
3919 get_framebuffer_parameteriv(ctx
, fb
, pname
, param
,
3920 "glGetNamedFramebufferParameteriv");
3926 invalidate_framebuffer_storage(struct gl_context
*ctx
,
3927 struct gl_framebuffer
*fb
,
3928 GLsizei numAttachments
,
3929 const GLenum
*attachments
, GLint x
, GLint y
,
3930 GLsizei width
, GLsizei height
, const char *name
)
3934 /* Section 17.4 Whole Framebuffer Operations of the OpenGL 4.5 Core
3935 * Spec (2.2.2015, PDF page 522) says:
3936 * "An INVALID_VALUE error is generated if numAttachments, width, or
3937 * height is negative."
3939 if (numAttachments
< 0) {
3940 _mesa_error(ctx
, GL_INVALID_VALUE
,
3941 "%s(numAttachments < 0)", name
);
3946 _mesa_error(ctx
, GL_INVALID_VALUE
,
3947 "%s(width < 0)", name
);
3952 _mesa_error(ctx
, GL_INVALID_VALUE
,
3953 "%s(height < 0)", name
);
3957 /* The GL_ARB_invalidate_subdata spec says:
3959 * "If an attachment is specified that does not exist in the
3960 * framebuffer bound to <target>, it is ignored."
3964 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3965 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3966 * INVALID_OPERATION is generated."
3968 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3969 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3970 * set of retrictions).
3972 for (i
= 0; i
< numAttachments
; i
++) {
3973 if (_mesa_is_winsys_fbo(fb
)) {
3974 switch (attachments
[i
]) {
3980 /* Accumulation buffers and auxilary buffers were removed in
3981 * OpenGL 3.1, and they never existed in OpenGL ES.
3983 if (ctx
->API
!= API_OPENGL_COMPAT
)
3993 case GL_FRONT_RIGHT
:
3994 if (!_mesa_is_desktop_gl(ctx
))
4001 switch (attachments
[i
]) {
4002 case GL_DEPTH_ATTACHMENT
:
4003 case GL_STENCIL_ATTACHMENT
:
4005 case GL_DEPTH_STENCIL_ATTACHMENT
:
4006 /* GL_DEPTH_STENCIL_ATTACHMENT is a valid attachment point only
4007 * in desktop and ES 3.0 profiles. Note that OES_packed_depth_stencil
4008 * extension does not make this attachment point valid on ES 2.0.
4010 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
))
4013 case GL_COLOR_ATTACHMENT0
:
4014 case GL_COLOR_ATTACHMENT1
:
4015 case GL_COLOR_ATTACHMENT2
:
4016 case GL_COLOR_ATTACHMENT3
:
4017 case GL_COLOR_ATTACHMENT4
:
4018 case GL_COLOR_ATTACHMENT5
:
4019 case GL_COLOR_ATTACHMENT6
:
4020 case GL_COLOR_ATTACHMENT7
:
4021 case GL_COLOR_ATTACHMENT8
:
4022 case GL_COLOR_ATTACHMENT9
:
4023 case GL_COLOR_ATTACHMENT10
:
4024 case GL_COLOR_ATTACHMENT11
:
4025 case GL_COLOR_ATTACHMENT12
:
4026 case GL_COLOR_ATTACHMENT13
:
4027 case GL_COLOR_ATTACHMENT14
:
4028 case GL_COLOR_ATTACHMENT15
: {
4029 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
4030 if (k
>= ctx
->Const
.MaxColorAttachments
) {
4031 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4032 "%s(attachment >= max. color attachments)", name
);
4043 /* We don't actually do anything for this yet. Just return after
4044 * validating the parameters and generating the required errors.
4049 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", name
,
4050 _mesa_enum_to_string(attachments
[i
]));
4056 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
4057 const GLenum
*attachments
, GLint x
, GLint y
,
4058 GLsizei width
, GLsizei height
)
4060 struct gl_framebuffer
*fb
;
4061 GET_CURRENT_CONTEXT(ctx
);
4063 fb
= get_framebuffer_target(ctx
, target
);
4065 _mesa_error(ctx
, GL_INVALID_ENUM
,
4066 "glInvalidateSubFramebuffer(invalid target %s)",
4067 _mesa_enum_to_string(target
));
4071 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4072 x
, y
, width
, height
,
4073 "glInvalidateSubFramebuffer");
4078 _mesa_InvalidateNamedFramebufferSubData(GLuint framebuffer
,
4079 GLsizei numAttachments
,
4080 const GLenum
*attachments
,
4082 GLsizei width
, GLsizei height
)
4084 struct gl_framebuffer
*fb
;
4085 GET_CURRENT_CONTEXT(ctx
);
4087 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4088 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4089 * default draw framebuffer is affected."
4092 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4093 "glInvalidateNamedFramebufferSubData");
4098 fb
= ctx
->WinSysDrawBuffer
;
4100 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4101 x
, y
, width
, height
,
4102 "glInvalidateNamedFramebufferSubData");
4107 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
4108 const GLenum
*attachments
)
4110 struct gl_framebuffer
*fb
;
4111 GET_CURRENT_CONTEXT(ctx
);
4113 fb
= get_framebuffer_target(ctx
, target
);
4115 _mesa_error(ctx
, GL_INVALID_ENUM
,
4116 "glInvalidateFramebuffer(invalid target %s)",
4117 _mesa_enum_to_string(target
));
4121 /* The GL_ARB_invalidate_subdata spec says:
4125 * void InvalidateFramebuffer(enum target,
4126 * sizei numAttachments,
4127 * const enum *attachments);
4129 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4130 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4131 * <MAX_VIEWPORT_DIMS[1]> respectively."
4133 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4135 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
4136 "glInvalidateFramebuffer");
4141 _mesa_InvalidateNamedFramebufferData(GLuint framebuffer
,
4142 GLsizei numAttachments
,
4143 const GLenum
*attachments
)
4145 struct gl_framebuffer
*fb
;
4146 GET_CURRENT_CONTEXT(ctx
);
4148 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4149 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4150 * default draw framebuffer is affected."
4153 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4154 "glInvalidateNamedFramebufferData");
4159 fb
= ctx
->WinSysDrawBuffer
;
4161 /* The GL_ARB_invalidate_subdata spec says:
4165 * void InvalidateFramebuffer(enum target,
4166 * sizei numAttachments,
4167 * const enum *attachments);
4169 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4170 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4171 * <MAX_VIEWPORT_DIMS[1]> respectively."
4173 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4175 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
4176 "glInvalidateNamedFramebufferData");
4181 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
4182 const GLenum
*attachments
)
4184 struct gl_framebuffer
*fb
;
4187 GET_CURRENT_CONTEXT(ctx
);
4189 fb
= get_framebuffer_target(ctx
, target
);
4191 _mesa_error(ctx
, GL_INVALID_ENUM
,
4192 "glDiscardFramebufferEXT(target %s)",
4193 _mesa_enum_to_string(target
));
4197 if (numAttachments
< 0) {
4198 _mesa_error(ctx
, GL_INVALID_VALUE
,
4199 "glDiscardFramebufferEXT(numAttachments < 0)");
4203 for (i
= 0; i
< numAttachments
; i
++) {
4204 switch (attachments
[i
]) {
4208 if (_mesa_is_user_fbo(fb
))
4211 case GL_COLOR_ATTACHMENT0
:
4212 case GL_DEPTH_ATTACHMENT
:
4213 case GL_STENCIL_ATTACHMENT
:
4214 if (_mesa_is_winsys_fbo(fb
))
4222 if (ctx
->Driver
.DiscardFramebuffer
)
4223 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
4228 _mesa_error(ctx
, GL_INVALID_ENUM
,
4229 "glDiscardFramebufferEXT(attachment %s)",
4230 _mesa_enum_to_string(attachments
[i
]));