2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * GL_EXT/ARB_framebuffer_object extensions
41 #include "framebuffer.h"
42 #include "glformats.h"
45 #include "multisample.h"
47 #include "renderbuffer.h"
56 * None of the GL_EXT_framebuffer_object functions are compiled into
63 * When glGenRender/FramebuffersEXT() is called we insert pointers to
64 * these placeholder objects into the hash table.
65 * Later, when the object ID is first bound, we replace the placeholder
66 * with the real frame/renderbuffer.
68 static struct gl_framebuffer DummyFramebuffer
;
69 static struct gl_renderbuffer DummyRenderbuffer
;
71 /* We bind this framebuffer when applications pass a NULL
72 * drawable/surface in make current. */
73 static struct gl_framebuffer IncompleteFramebuffer
;
77 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
83 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
90 _mesa_init_fbobjects(struct gl_context
*ctx
)
92 mtx_init(&DummyFramebuffer
.Mutex
, mtx_plain
);
93 mtx_init(&DummyRenderbuffer
.Mutex
, mtx_plain
);
94 mtx_init(&IncompleteFramebuffer
.Mutex
, mtx_plain
);
95 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
96 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
97 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 struct gl_framebuffer
*
101 _mesa_get_incomplete_framebuffer(void)
103 return &IncompleteFramebuffer
;
107 * Helper routine for getting a gl_renderbuffer.
109 struct gl_renderbuffer
*
110 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
112 struct gl_renderbuffer
*rb
;
117 rb
= (struct gl_renderbuffer
*)
118 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
124 * A convenience function for direct state access that throws
125 * GL_INVALID_OPERATION if the renderbuffer doesn't exist.
127 struct gl_renderbuffer
*
128 _mesa_lookup_renderbuffer_err(struct gl_context
*ctx
, GLuint id
,
131 struct gl_renderbuffer
*rb
;
133 rb
= _mesa_lookup_renderbuffer(ctx
, id
);
134 if (!rb
|| rb
== &DummyRenderbuffer
) {
135 _mesa_error(ctx
, GL_INVALID_OPERATION
,
136 "%s(non-existent renderbuffer %u)", func
, id
);
145 * Helper routine for getting a gl_framebuffer.
147 struct gl_framebuffer
*
148 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
150 struct gl_framebuffer
*fb
;
155 fb
= (struct gl_framebuffer
*)
156 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
162 * A convenience function for direct state access that throws
163 * GL_INVALID_OPERATION if the framebuffer doesn't exist.
165 struct gl_framebuffer
*
166 _mesa_lookup_framebuffer_err(struct gl_context
*ctx
, GLuint id
,
169 struct gl_framebuffer
*fb
;
171 fb
= _mesa_lookup_framebuffer(ctx
, id
);
172 if (!fb
|| fb
== &DummyFramebuffer
) {
173 _mesa_error(ctx
, GL_INVALID_OPERATION
,
174 "%s(non-existent framebuffer %u)", func
, id
);
183 * Mark the given framebuffer as invalid. This will force the
184 * test for framebuffer completeness to be done before the framebuffer
188 invalidate_framebuffer(struct gl_framebuffer
*fb
)
190 fb
->_Status
= 0; /* "indeterminate" */
195 * Return the gl_framebuffer object which corresponds to the given
196 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
197 * Check support for GL_EXT_framebuffer_blit to determine if certain
199 * \return gl_framebuffer pointer or NULL if target is illegal
201 static struct gl_framebuffer
*
202 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
204 bool have_fb_blit
= _mesa_is_gles3(ctx
) || _mesa_is_desktop_gl(ctx
);
206 case GL_DRAW_FRAMEBUFFER
:
207 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
208 case GL_READ_FRAMEBUFFER
:
209 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
210 case GL_FRAMEBUFFER_EXT
:
211 return ctx
->DrawBuffer
;
219 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
220 * gl_renderbuffer_attachment object.
221 * This function is only used for user-created FB objects, not the
222 * default / window-system FB object.
223 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
224 * the depth buffer attachment point.
226 static struct gl_renderbuffer_attachment
*
227 get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
232 assert(_mesa_is_user_fbo(fb
));
234 switch (attachment
) {
235 case GL_COLOR_ATTACHMENT0_EXT
:
236 case GL_COLOR_ATTACHMENT1_EXT
:
237 case GL_COLOR_ATTACHMENT2_EXT
:
238 case GL_COLOR_ATTACHMENT3_EXT
:
239 case GL_COLOR_ATTACHMENT4_EXT
:
240 case GL_COLOR_ATTACHMENT5_EXT
:
241 case GL_COLOR_ATTACHMENT6_EXT
:
242 case GL_COLOR_ATTACHMENT7_EXT
:
243 case GL_COLOR_ATTACHMENT8_EXT
:
244 case GL_COLOR_ATTACHMENT9_EXT
:
245 case GL_COLOR_ATTACHMENT10_EXT
:
246 case GL_COLOR_ATTACHMENT11_EXT
:
247 case GL_COLOR_ATTACHMENT12_EXT
:
248 case GL_COLOR_ATTACHMENT13_EXT
:
249 case GL_COLOR_ATTACHMENT14_EXT
:
250 case GL_COLOR_ATTACHMENT15_EXT
:
251 /* Only OpenGL ES 1.x forbids color attachments other than
252 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
255 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
256 if (i
>= ctx
->Const
.MaxColorAttachments
257 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
260 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
261 case GL_DEPTH_STENCIL_ATTACHMENT
:
262 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
265 case GL_DEPTH_ATTACHMENT_EXT
:
266 return &fb
->Attachment
[BUFFER_DEPTH
];
267 case GL_STENCIL_ATTACHMENT_EXT
:
268 return &fb
->Attachment
[BUFFER_STENCIL
];
276 * As above, but only used for getting attachments of the default /
277 * window-system framebuffer (not user-created framebuffer objects).
279 static struct gl_renderbuffer_attachment
*
280 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
283 assert(_mesa_is_winsys_fbo(fb
));
285 if (_mesa_is_gles3(ctx
)) {
286 assert(attachment
== GL_BACK
||
287 attachment
== GL_DEPTH
||
288 attachment
== GL_STENCIL
);
289 switch (attachment
) {
291 /* Since there is no stereo rendering in ES 3.0, only return the
294 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
295 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
296 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
298 return &fb
->Attachment
[BUFFER_DEPTH
];
300 return &fb
->Attachment
[BUFFER_STENCIL
];
304 switch (attachment
) {
306 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
308 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
310 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
312 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
314 if (fb
->Visual
.numAuxBuffers
== 1) {
315 return &fb
->Attachment
[BUFFER_AUX0
];
319 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
321 * "If the default framebuffer is bound to target, then attachment must
322 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
323 * identifying a color buffer; DEPTH, identifying the depth buffer; or
324 * STENCIL, identifying the stencil buffer."
326 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
327 * language. However, revision #33 of the ARB_framebuffer_object spec
330 * "If the default framebuffer is bound to <target>, then <attachment>
331 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
332 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
333 * depth buffer, or the stencil buffer, and <pname> may be
334 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
335 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
337 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
338 * from glext.h, so shipping apps should not use those values.
340 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
341 * support queries of the window system FBO.
344 return &fb
->Attachment
[BUFFER_DEPTH
];
346 return &fb
->Attachment
[BUFFER_STENCIL
];
355 * Remove any texture or renderbuffer attached to the given attachment
356 * point. Update reference counts, etc.
359 remove_attachment(struct gl_context
*ctx
,
360 struct gl_renderbuffer_attachment
*att
)
362 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
364 /* tell driver that we're done rendering to this texture. */
365 if (rb
&& rb
->NeedsFinishRenderTexture
)
366 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
368 if (att
->Type
== GL_TEXTURE
) {
369 assert(att
->Texture
);
370 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
371 assert(!att
->Texture
);
373 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
374 assert(!att
->Texture
);
375 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
376 assert(!att
->Renderbuffer
);
379 att
->Complete
= GL_TRUE
;
383 * Verify a couple error conditions that will lead to an incomplete FBO and
384 * may cause problems for the driver's RenderTexture path.
387 driver_RenderTexture_is_safe(const struct gl_renderbuffer_attachment
*att
)
389 const struct gl_texture_image
*const texImage
=
390 att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
392 if (texImage
->Width
== 0 || texImage
->Height
== 0 || texImage
->Depth
== 0)
395 if ((texImage
->TexObject
->Target
== GL_TEXTURE_1D_ARRAY
396 && att
->Zoffset
>= texImage
->Height
)
397 || (texImage
->TexObject
->Target
!= GL_TEXTURE_1D_ARRAY
398 && att
->Zoffset
>= texImage
->Depth
))
405 * Create a renderbuffer which will be set up by the driver to wrap the
406 * texture image slice.
408 * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get
409 * to share most of their framebuffer rendering code between winsys,
410 * renderbuffer, and texture attachments.
412 * The allocated renderbuffer uses a non-zero Name so that drivers can check
413 * it for determining vertical orientation, but we use ~0 to make it fairly
414 * unambiguous with actual user (non-texture) renderbuffers.
417 _mesa_update_texture_renderbuffer(struct gl_context
*ctx
,
418 struct gl_framebuffer
*fb
,
419 struct gl_renderbuffer_attachment
*att
)
421 struct gl_texture_image
*texImage
;
422 struct gl_renderbuffer
*rb
;
424 texImage
= att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
426 rb
= att
->Renderbuffer
;
428 rb
= ctx
->Driver
.NewRenderbuffer(ctx
, ~0);
430 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
433 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
435 /* This can't get called on a texture renderbuffer, so set it to NULL
436 * for clarity compared to user renderbuffers.
438 rb
->AllocStorage
= NULL
;
440 rb
->NeedsFinishRenderTexture
= ctx
->Driver
.FinishRenderTexture
!= NULL
;
446 rb
->_BaseFormat
= texImage
->_BaseFormat
;
447 rb
->Format
= texImage
->TexFormat
;
448 rb
->InternalFormat
= texImage
->InternalFormat
;
449 rb
->Width
= texImage
->Width2
;
450 rb
->Height
= texImage
->Height2
;
451 rb
->Depth
= texImage
->Depth2
;
452 rb
->NumSamples
= texImage
->NumSamples
;
453 rb
->TexImage
= texImage
;
455 if (driver_RenderTexture_is_safe(att
))
456 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
460 * Bind a texture object to an attachment point.
461 * The previous binding, if any, will be removed first.
464 set_texture_attachment(struct gl_context
*ctx
,
465 struct gl_framebuffer
*fb
,
466 struct gl_renderbuffer_attachment
*att
,
467 struct gl_texture_object
*texObj
,
468 GLenum texTarget
, GLuint level
, GLuint layer
,
471 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
473 if (rb
&& rb
->NeedsFinishRenderTexture
)
474 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
476 if (att
->Texture
== texObj
) {
477 /* re-attaching same texture */
478 assert(att
->Type
== GL_TEXTURE
);
482 remove_attachment(ctx
, att
);
483 att
->Type
= GL_TEXTURE
;
484 assert(!att
->Texture
);
485 _mesa_reference_texobj(&att
->Texture
, texObj
);
487 invalidate_framebuffer(fb
);
489 /* always update these fields */
490 att
->TextureLevel
= level
;
491 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
492 att
->Zoffset
= layer
;
493 att
->Layered
= layered
;
494 att
->Complete
= GL_FALSE
;
496 _mesa_update_texture_renderbuffer(ctx
, fb
, att
);
501 * Bind a renderbuffer to an attachment point.
502 * The previous binding, if any, will be removed first.
505 set_renderbuffer_attachment(struct gl_context
*ctx
,
506 struct gl_renderbuffer_attachment
*att
,
507 struct gl_renderbuffer
*rb
)
509 /* XXX check if re-doing same attachment, exit early */
510 remove_attachment(ctx
, att
);
511 att
->Type
= GL_RENDERBUFFER_EXT
;
512 att
->Texture
= NULL
; /* just to be safe */
513 att
->Layered
= GL_FALSE
;
514 att
->Complete
= GL_FALSE
;
515 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
520 * Fallback for ctx->Driver.FramebufferRenderbuffer()
521 * Attach a renderbuffer object to a framebuffer object.
524 _mesa_FramebufferRenderbuffer_sw(struct gl_context
*ctx
,
525 struct gl_framebuffer
*fb
,
527 struct gl_renderbuffer
*rb
)
529 struct gl_renderbuffer_attachment
*att
;
531 mtx_lock(&fb
->Mutex
);
533 att
= get_attachment(ctx
, fb
, attachment
);
536 set_renderbuffer_attachment(ctx
, att
, rb
);
537 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
538 /* do stencil attachment here (depth already done above) */
539 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
541 set_renderbuffer_attachment(ctx
, att
, rb
);
543 rb
->AttachedAnytime
= GL_TRUE
;
546 remove_attachment(ctx
, att
);
547 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
548 /* detach stencil (depth was detached above) */
549 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
551 remove_attachment(ctx
, att
);
555 invalidate_framebuffer(fb
);
557 mtx_unlock(&fb
->Mutex
);
562 * Fallback for ctx->Driver.ValidateFramebuffer()
563 * Check if the renderbuffer's formats are supported by the software
565 * Drivers should probably override this.
568 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
571 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
572 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
574 switch (rb
->_BaseFormat
) {
576 case GL_LUMINANCE_ALPHA
:
581 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
585 switch (rb
->Format
) {
586 /* XXX This list is likely incomplete. */
587 case MESA_FORMAT_R9G9B9E5_FLOAT
:
588 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
591 /* render buffer format is supported by software rendering */
600 * Return true if the framebuffer has a combined depth/stencil
601 * renderbuffer attached.
604 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
606 const struct gl_renderbuffer_attachment
*depth
=
607 &fb
->Attachment
[BUFFER_DEPTH
];
608 const struct gl_renderbuffer_attachment
*stencil
=
609 &fb
->Attachment
[BUFFER_STENCIL
];
611 if (depth
->Type
== stencil
->Type
) {
612 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
613 depth
->Renderbuffer
== stencil
->Renderbuffer
)
616 if (depth
->Type
== GL_TEXTURE
&&
617 depth
->Texture
== stencil
->Texture
)
629 att_incomplete(const char *msg
)
631 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
632 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
641 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
643 static GLuint msg_id
;
645 _mesa_gl_debug(ctx
, &msg_id
,
646 MESA_DEBUG_SOURCE_API
,
647 MESA_DEBUG_TYPE_OTHER
,
648 MESA_DEBUG_SEVERITY_MEDIUM
,
649 "FBO incomplete: %s [%d]\n", msg
, index
);
651 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
652 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
658 * Is the given base format a legal format for a color renderbuffer?
661 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
663 switch (baseFormat
) {
668 case GL_LUMINANCE_ALPHA
:
671 return ctx
->API
== API_OPENGL_COMPAT
&&
672 ctx
->Extensions
.ARB_framebuffer_object
;
675 return ctx
->Extensions
.ARB_texture_rg
;
683 * Is the given base format a legal format for a color renderbuffer?
686 is_format_color_renderable(const struct gl_context
*ctx
, mesa_format format
,
687 GLenum internalFormat
)
689 const GLenum baseFormat
=
690 _mesa_get_format_base_format(format
);
693 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
694 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
698 /* Reject additional cases for GLES */
699 switch (internalFormat
) {
719 if (format
== MESA_FORMAT_B10G10R10A2_UNORM
&&
720 internalFormat
!= GL_RGB10_A2
) {
729 * Is the given base format a legal format for a depth/stencil renderbuffer?
732 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
734 switch (baseFormat
) {
735 case GL_DEPTH_COMPONENT
:
736 case GL_DEPTH_STENCIL_EXT
:
745 * Test if an attachment point is complete and update its Complete field.
746 * \param format if GL_COLOR, this is a color attachment point,
747 * if GL_DEPTH, this is a depth component attachment point,
748 * if GL_STENCIL, this is a stencil component attachment point.
751 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
752 struct gl_renderbuffer_attachment
*att
)
754 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
756 /* assume complete */
757 att
->Complete
= GL_TRUE
;
759 /* Look for reasons why the attachment might be incomplete */
760 if (att
->Type
== GL_TEXTURE
) {
761 const struct gl_texture_object
*texObj
= att
->Texture
;
762 struct gl_texture_image
*texImage
;
766 att_incomplete("no texobj");
767 att
->Complete
= GL_FALSE
;
771 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
773 att_incomplete("no teximage");
774 att
->Complete
= GL_FALSE
;
777 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
778 att_incomplete("teximage width/height=0");
779 att
->Complete
= GL_FALSE
;
783 switch (texObj
->Target
) {
785 if (att
->Zoffset
>= texImage
->Depth
) {
786 att_incomplete("bad z offset");
787 att
->Complete
= GL_FALSE
;
791 case GL_TEXTURE_1D_ARRAY
:
792 if (att
->Zoffset
>= texImage
->Height
) {
793 att_incomplete("bad 1D-array layer");
794 att
->Complete
= GL_FALSE
;
798 case GL_TEXTURE_2D_ARRAY
:
799 if (att
->Zoffset
>= texImage
->Depth
) {
800 att_incomplete("bad 2D-array layer");
801 att
->Complete
= GL_FALSE
;
805 case GL_TEXTURE_CUBE_MAP_ARRAY
:
806 if (att
->Zoffset
>= texImage
->Depth
) {
807 att_incomplete("bad cube-array layer");
808 att
->Complete
= GL_FALSE
;
814 baseFormat
= texImage
->_BaseFormat
;
816 if (format
== GL_COLOR
) {
817 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
818 att_incomplete("bad format");
819 att
->Complete
= GL_FALSE
;
822 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
823 att_incomplete("compressed internalformat");
824 att
->Complete
= GL_FALSE
;
828 /* OES_texture_float allows creation and use of floating point
829 * textures with GL_FLOAT, GL_HALF_FLOAT but it does not allow
830 * these textures to be used as a render target, this is done via
831 * GL_EXT_color_buffer(_half)_float with set of new sized types.
833 if (_mesa_is_gles(ctx
) && (texImage
->TexObject
->_IsFloat
||
834 texImage
->TexObject
->_IsHalfFloat
)) {
835 att_incomplete("bad internal format");
836 att
->Complete
= GL_FALSE
;
840 else if (format
== GL_DEPTH
) {
841 if (baseFormat
== GL_DEPTH_COMPONENT
) {
844 else if (ctx
->Extensions
.ARB_depth_texture
&&
845 baseFormat
== GL_DEPTH_STENCIL
) {
849 att
->Complete
= GL_FALSE
;
850 att_incomplete("bad depth format");
855 assert(format
== GL_STENCIL
);
856 if (ctx
->Extensions
.ARB_depth_texture
&&
857 baseFormat
== GL_DEPTH_STENCIL
) {
859 } else if (ctx
->Extensions
.ARB_texture_stencil8
&&
860 baseFormat
== GL_STENCIL_INDEX
) {
863 /* no such thing as stencil-only textures */
864 att_incomplete("illegal stencil texture");
865 att
->Complete
= GL_FALSE
;
870 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
871 const GLenum baseFormat
= att
->Renderbuffer
->_BaseFormat
;
873 assert(att
->Renderbuffer
);
874 if (!att
->Renderbuffer
->InternalFormat
||
875 att
->Renderbuffer
->Width
< 1 ||
876 att
->Renderbuffer
->Height
< 1) {
877 att_incomplete("0x0 renderbuffer");
878 att
->Complete
= GL_FALSE
;
881 if (format
== GL_COLOR
) {
882 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
883 att_incomplete("bad renderbuffer color format");
884 att
->Complete
= GL_FALSE
;
888 else if (format
== GL_DEPTH
) {
889 if (baseFormat
== GL_DEPTH_COMPONENT
) {
892 else if (baseFormat
== GL_DEPTH_STENCIL
) {
896 att_incomplete("bad renderbuffer depth format");
897 att
->Complete
= GL_FALSE
;
902 assert(format
== GL_STENCIL
);
903 if (baseFormat
== GL_STENCIL_INDEX
||
904 baseFormat
== GL_DEPTH_STENCIL
) {
908 att
->Complete
= GL_FALSE
;
909 att_incomplete("bad renderbuffer stencil format");
915 assert(att
->Type
== GL_NONE
);
923 * Test if the given framebuffer object is complete and update its
924 * Status field with the results.
925 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
926 * driver to make hardware-specific validation/completeness checks.
927 * Also update the framebuffer's Width and Height fields if the
928 * framebuffer is complete.
931 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
932 struct gl_framebuffer
*fb
)
935 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
936 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
937 GLint numSamples
= -1;
938 GLint fixedSampleLocations
= -1;
941 /* Covers max_layer_count, is_layered, and layer_tex_target */
942 bool layer_info_valid
= false;
943 GLuint max_layer_count
= 0, att_layer_count
;
944 bool is_layered
= false;
945 GLenum layer_tex_target
= 0;
946 bool has_depth_attachment
= false;
947 bool has_stencil_attachment
= false;
949 assert(_mesa_is_user_fbo(fb
));
951 /* we're changing framebuffer fields here */
952 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
957 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
958 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
959 fb
->_HasAttachments
= true;
961 /* Start at -2 to more easily loop over all attachment points.
966 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
967 struct gl_renderbuffer_attachment
*att
;
969 mesa_format attFormat
;
970 GLenum att_tex_target
= GL_NONE
;
973 * XXX for ARB_fbo, only check color buffers that are named by
974 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
977 /* check for attachment completeness
980 att
= &fb
->Attachment
[BUFFER_DEPTH
];
981 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
982 if (!att
->Complete
) {
983 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
984 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
986 } else if (att
->Type
!= GL_NONE
) {
987 has_depth_attachment
= true;
991 att
= &fb
->Attachment
[BUFFER_STENCIL
];
992 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
993 if (!att
->Complete
) {
994 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
995 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
997 } else if (att
->Type
!= GL_NONE
) {
998 has_stencil_attachment
= true;
1002 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
1003 test_attachment_completeness(ctx
, GL_COLOR
, att
);
1004 if (!att
->Complete
) {
1005 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
1006 fbo_incomplete(ctx
, "color attachment incomplete", i
);
1011 /* get width, height, format of the renderbuffer/texture
1013 if (att
->Type
== GL_TEXTURE
) {
1014 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
1015 att_tex_target
= att
->Texture
->Target
;
1016 minWidth
= MIN2(minWidth
, texImg
->Width
);
1017 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
1018 minHeight
= MIN2(minHeight
, texImg
->Height
);
1019 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
1020 f
= texImg
->_BaseFormat
;
1021 attFormat
= texImg
->TexFormat
;
1024 if (!is_format_color_renderable(ctx
, attFormat
,
1025 texImg
->InternalFormat
) &&
1026 !is_legal_depth_format(ctx
, f
) &&
1027 f
!= GL_STENCIL_INDEX
) {
1028 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
;
1029 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
1034 numSamples
= texImg
->NumSamples
;
1035 else if (numSamples
!= texImg
->NumSamples
) {
1036 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1037 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1041 if (fixedSampleLocations
< 0)
1042 fixedSampleLocations
= texImg
->FixedSampleLocations
;
1043 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
1044 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1045 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1049 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1050 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
1051 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
1052 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
1053 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
1054 f
= att
->Renderbuffer
->InternalFormat
;
1055 attFormat
= att
->Renderbuffer
->Format
;
1059 numSamples
= att
->Renderbuffer
->NumSamples
;
1060 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
1061 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1062 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1066 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1067 if (fixedSampleLocations
< 0)
1068 fixedSampleLocations
= GL_TRUE
;
1069 else if (fixedSampleLocations
!= GL_TRUE
) {
1070 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1071 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1076 assert(att
->Type
== GL_NONE
);
1080 /* check if integer color */
1081 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1083 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1085 GLenum type
= _mesa_get_format_datatype(attFormat
);
1087 fb
->_AllColorBuffersFixedPoint
=
1088 fb
->_AllColorBuffersFixedPoint
&&
1089 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1091 fb
->_HasSNormOrFloatColorBuffer
=
1092 fb
->_HasSNormOrFloatColorBuffer
||
1093 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1096 /* Error-check width, height, format */
1097 if (numImages
== 1) {
1104 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1105 /* check that width, height, format are same */
1106 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1107 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1108 fbo_incomplete(ctx
, "width or height mismatch", -1);
1111 /* check that all color buffers are the same format */
1112 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1113 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1114 fbo_incomplete(ctx
, "format mismatch", -1);
1120 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1122 if (att
->Type
== GL_RENDERBUFFER
&&
1123 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1124 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1125 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1129 /* Check that layered rendering is consistent. */
1131 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1132 att_layer_count
= 6;
1133 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1134 att_layer_count
= att
->Renderbuffer
->Height
;
1136 att_layer_count
= att
->Renderbuffer
->Depth
;
1138 att_layer_count
= 0;
1140 if (!layer_info_valid
) {
1141 is_layered
= att
->Layered
;
1142 max_layer_count
= att_layer_count
;
1143 layer_tex_target
= att_tex_target
;
1144 layer_info_valid
= true;
1145 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1146 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1147 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1149 } else if (is_layered
!= att
->Layered
) {
1150 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1152 "framebuffer attachment layer mode is inconsistent",
1155 } else if (att_layer_count
> max_layer_count
) {
1156 max_layer_count
= att_layer_count
;
1160 * The extension GL_ARB_framebuffer_no_attachments places additional
1161 * requirement on each attachment. Those additional requirements are
1162 * tighter that those of previous versions of GL. In interest of better
1163 * compatibility, we will not enforce these restrictions. For the record
1164 * those additional restrictions are quoted below:
1166 * "The width and height of image are greater than zero and less than or
1167 * equal to the values of the implementation-dependent limits
1168 * MAX_FRAMEBUFFER_WIDTH and MAX_FRAMEBUFFER_HEIGHT, respectively."
1170 * "If <image> is a three-dimensional texture or a one- or two-dimensional
1171 * array texture and the attachment is layered, the depth or layer count
1172 * of the texture is less than or equal to the implementation-dependent
1173 * limit MAX_FRAMEBUFFER_LAYERS."
1175 * "If image has multiple samples, its sample count is less than or equal
1176 * to the value of the implementation-dependent limit
1177 * MAX_FRAMEBUFFER_SAMPLES."
1179 * The same requirements are also in place for GL 4.5,
1180 * Section 9.4.1 "Framebuffer Attachment Completeness", pg 310-311
1184 fb
->MaxNumLayers
= max_layer_count
;
1186 if (numImages
== 0) {
1187 fb
->_HasAttachments
= false;
1189 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1190 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1191 fbo_incomplete(ctx
, "no attachments", -1);
1195 if (fb
->DefaultGeometry
.Width
== 0 || fb
->DefaultGeometry
.Height
== 0) {
1196 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1197 fbo_incomplete(ctx
, "no attachments and default width or height is 0", -1);
1202 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1203 /* Check that all DrawBuffers are present */
1204 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1205 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1206 const struct gl_renderbuffer_attachment
*att
1207 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1209 if (att
->Type
== GL_NONE
) {
1210 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1211 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1217 /* Check that the ReadBuffer is present */
1218 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1219 const struct gl_renderbuffer_attachment
*att
1220 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1222 if (att
->Type
== GL_NONE
) {
1223 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1224 fbo_incomplete(ctx
, "missing readbuffer", -1);
1230 /* The OpenGL ES3 spec, in chapter 9.4. FRAMEBUFFER COMPLETENESS, says:
1232 * "Depth and stencil attachments, if present, are the same image."
1234 * This restriction is not present in the OpenGL ES2 spec.
1236 if (_mesa_is_gles3(ctx
) &&
1237 has_stencil_attachment
&& has_depth_attachment
&&
1238 !_mesa_has_depthstencil_combined(fb
)) {
1239 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1240 fbo_incomplete(ctx
, "Depth and stencil attachments must be the same image", -1);
1244 /* Provisionally set status = COMPLETE ... */
1245 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1247 /* ... but the driver may say the FB is incomplete.
1248 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1251 if (ctx
->Driver
.ValidateFramebuffer
) {
1252 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1253 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1254 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1260 * Note that if ARB_framebuffer_object is supported and the attached
1261 * renderbuffers/textures are different sizes, the framebuffer
1262 * width/height will be set to the smallest width/height.
1264 if (numImages
!= 0) {
1265 fb
->Width
= minWidth
;
1266 fb
->Height
= minHeight
;
1269 /* finally, update the visual info for the framebuffer */
1270 _mesa_update_framebuffer_visual(ctx
, fb
);
1274 GLboolean GLAPIENTRY
1275 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1277 GET_CURRENT_CONTEXT(ctx
);
1278 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1280 struct gl_renderbuffer
*rb
=
1281 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1282 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1289 static struct gl_renderbuffer
*
1290 allocate_renderbuffer(struct gl_context
*ctx
, GLuint renderbuffer
,
1293 struct gl_renderbuffer
*newRb
;
1295 /* create new renderbuffer object */
1296 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1298 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1301 assert(newRb
->AllocStorage
);
1302 mtx_lock(&ctx
->Shared
->Mutex
);
1303 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1304 newRb
->RefCount
= 1; /* referenced by hash table */
1305 mtx_unlock(&ctx
->Shared
->Mutex
);
1312 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1314 struct gl_renderbuffer
*newRb
;
1315 GET_CURRENT_CONTEXT(ctx
);
1317 if (target
!= GL_RENDERBUFFER_EXT
) {
1318 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1322 /* No need to flush here since the render buffer binding has no
1323 * effect on rendering state.
1327 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1328 if (newRb
== &DummyRenderbuffer
) {
1329 /* ID was reserved, but no real renderbuffer object made yet */
1332 else if (!newRb
&& !allow_user_names
) {
1333 /* All RB IDs must be Gen'd */
1334 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1339 newRb
= allocate_renderbuffer(ctx
, renderbuffer
, "glBindRenderbufferEXT");
1346 assert(newRb
!= &DummyRenderbuffer
);
1348 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1352 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1354 GET_CURRENT_CONTEXT(ctx
);
1356 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1357 * entry point, but they allow the use of user-generated names.
1359 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1363 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1365 /* This function should not be in the dispatch table for core profile /
1366 * OpenGL 3.1, so execution should never get here in those cases -- no
1367 * need for an explicit test.
1369 bind_renderbuffer(target
, renderbuffer
, true);
1373 framebuffer_parameteri(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1374 GLenum pname
, GLint param
, const char *func
)
1377 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1378 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferWidth
)
1379 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1381 fb
->DefaultGeometry
.Width
= param
;
1383 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1384 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferHeight
)
1385 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1387 fb
->DefaultGeometry
.Height
= param
;
1389 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1391 * According to the OpenGL ES 3.1 specification section 9.2.1, the
1392 * GL_FRAMEBUFFER_DEFAULT_LAYERS parameter name is not supported.
1394 if (_mesa_is_gles31(ctx
)) {
1395 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1398 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferLayers
)
1399 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1401 fb
->DefaultGeometry
.Layers
= param
;
1403 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1404 if (param
< 0 || param
> ctx
->Const
.MaxFramebufferSamples
)
1405 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", func
);
1407 fb
->DefaultGeometry
.NumSamples
= param
;
1409 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1410 fb
->DefaultGeometry
.FixedSampleLocations
= param
;
1413 _mesa_error(ctx
, GL_INVALID_ENUM
,
1414 "%s(pname=0x%x)", func
, pname
);
1417 invalidate_framebuffer(fb
);
1418 ctx
->NewState
|= _NEW_BUFFERS
;
1422 _mesa_FramebufferParameteri(GLenum target
, GLenum pname
, GLint param
)
1424 GET_CURRENT_CONTEXT(ctx
);
1425 struct gl_framebuffer
*fb
;
1427 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1428 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1429 "glFramebufferParameteriv not supported "
1430 "(ARB_framebuffer_no_attachments not implemented)");
1434 fb
= get_framebuffer_target(ctx
, target
);
1436 _mesa_error(ctx
, GL_INVALID_ENUM
,
1437 "glFramebufferParameteri(target=0x%x)", target
);
1441 /* check framebuffer binding */
1442 if (_mesa_is_winsys_fbo(fb
)) {
1443 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1444 "glFramebufferParameteri");
1448 framebuffer_parameteri(ctx
, fb
, pname
, param
, "glFramebufferParameteri");
1452 get_framebuffer_parameteriv(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
1453 GLenum pname
, GLint
*params
, const char *func
)
1456 case GL_FRAMEBUFFER_DEFAULT_WIDTH
:
1457 *params
= fb
->DefaultGeometry
.Width
;
1459 case GL_FRAMEBUFFER_DEFAULT_HEIGHT
:
1460 *params
= fb
->DefaultGeometry
.Height
;
1462 case GL_FRAMEBUFFER_DEFAULT_LAYERS
:
1464 * According to the OpenGL ES 3.1 specification section 9.2.3, the
1465 * GL_FRAMEBUFFER_LAYERS parameter name is not supported.
1467 if (_mesa_is_gles31(ctx
)) {
1468 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=0x%x)", func
, pname
);
1471 *params
= fb
->DefaultGeometry
.Layers
;
1473 case GL_FRAMEBUFFER_DEFAULT_SAMPLES
:
1474 *params
= fb
->DefaultGeometry
.NumSamples
;
1476 case GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
:
1477 *params
= fb
->DefaultGeometry
.FixedSampleLocations
;
1480 _mesa_error(ctx
, GL_INVALID_ENUM
,
1481 "%s(pname=0x%x)", func
, pname
);
1486 _mesa_GetFramebufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1488 GET_CURRENT_CONTEXT(ctx
);
1489 struct gl_framebuffer
*fb
;
1491 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
1492 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1493 "glGetFramebufferParameteriv not supported "
1494 "(ARB_framebuffer_no_attachments not implemented)");
1498 fb
= get_framebuffer_target(ctx
, target
);
1500 _mesa_error(ctx
, GL_INVALID_ENUM
,
1501 "glGetFramebufferParameteriv(target=0x%x)", target
);
1505 /* check framebuffer binding */
1506 if (_mesa_is_winsys_fbo(fb
)) {
1507 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1508 "glGetFramebufferParameteriv");
1512 get_framebuffer_parameteriv(ctx
, fb
, pname
, params
,
1513 "glGetFramebufferParameteriv");
1518 * Remove the specified renderbuffer or texture from any attachment point in
1522 * \c true if the renderbuffer was detached from an attachment point. \c
1526 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1527 struct gl_framebuffer
*fb
,
1531 bool progress
= false;
1533 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1534 if (fb
->Attachment
[i
].Texture
== att
1535 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1536 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1541 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1542 * Completeness," of the OpenGL 3.1 spec says:
1544 * "Performing any of the following actions may change whether the
1545 * framebuffer is considered complete or incomplete:
1549 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1550 * containing an image that is attached to a framebuffer object
1551 * that is bound to the framebuffer."
1554 invalidate_framebuffer(fb
);
1561 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1564 GET_CURRENT_CONTEXT(ctx
);
1567 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteRenderbuffers(n < 0)");
1571 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1573 for (i
= 0; i
< n
; i
++) {
1574 if (renderbuffers
[i
] > 0) {
1575 struct gl_renderbuffer
*rb
;
1576 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1578 /* check if deleting currently bound renderbuffer object */
1579 if (rb
== ctx
->CurrentRenderbuffer
) {
1581 assert(rb
->RefCount
>= 2);
1582 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1585 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1586 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1587 * of the OpenGL 3.1 spec says:
1589 * "If a renderbuffer object is deleted while its image is
1590 * attached to one or more attachment points in the currently
1591 * bound framebuffer, then it is as if FramebufferRenderbuffer
1592 * had been called, with a renderbuffer of 0, for each
1593 * attachment point to which this image was attached in the
1594 * currently bound framebuffer. In other words, this
1595 * renderbuffer image is first detached from all attachment
1596 * points in the currently bound framebuffer. Note that the
1597 * renderbuffer image is specifically not detached from any
1598 * non-bound framebuffers. Detaching the image from any
1599 * non-bound framebuffers is the responsibility of the
1602 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1603 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1605 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1606 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1607 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1610 /* Remove from hash table immediately, to free the ID.
1611 * But the object will not be freed until it's no longer
1612 * referenced anywhere else.
1614 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1616 if (rb
!= &DummyRenderbuffer
) {
1617 /* no longer referenced by hash table */
1618 _mesa_reference_renderbuffer(&rb
, NULL
);
1626 create_render_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*renderbuffers
,
1629 const char *func
= dsa
? "glCreateRenderbuffers" : "glGenRenderbuffers";
1634 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n<0)", func
);
1641 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1643 for (i
= 0; i
< n
; i
++) {
1644 GLuint name
= first
+ i
;
1645 renderbuffers
[i
] = name
;
1648 allocate_renderbuffer(ctx
, name
, func
);
1650 /* insert a dummy renderbuffer into the hash table */
1651 mtx_lock(&ctx
->Shared
->Mutex
);
1652 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1653 mtx_unlock(&ctx
->Shared
->Mutex
);
1660 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1662 GET_CURRENT_CONTEXT(ctx
);
1663 create_render_buffers(ctx
, n
, renderbuffers
, false);
1668 _mesa_CreateRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1670 GET_CURRENT_CONTEXT(ctx
);
1671 create_render_buffers(ctx
, n
, renderbuffers
, true);
1676 * Given an internal format token for a render buffer, return the
1677 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1678 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1679 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1681 * This is similar to _mesa_base_tex_format() but the set of valid
1682 * internal formats is different.
1684 * Note that even if a format is determined to be legal here, validation
1685 * of the FBO may fail if the format is not supported by the driver/GPU.
1687 * \param internalFormat as passed to glRenderbufferStorage()
1688 * \return the base internal format, or 0 if internalFormat is illegal
1691 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1694 * Notes: some formats such as alpha, luminance, etc. were added
1695 * with GL_ARB_framebuffer_object.
1697 switch (internalFormat
) {
1703 return (ctx
->API
== API_OPENGL_COMPAT
&&
1704 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1708 case GL_LUMINANCE12
:
1709 case GL_LUMINANCE16
:
1710 return (ctx
->API
== API_OPENGL_COMPAT
&&
1711 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1712 case GL_LUMINANCE_ALPHA
:
1713 case GL_LUMINANCE4_ALPHA4
:
1714 case GL_LUMINANCE6_ALPHA2
:
1715 case GL_LUMINANCE8_ALPHA8
:
1716 case GL_LUMINANCE12_ALPHA4
:
1717 case GL_LUMINANCE12_ALPHA12
:
1718 case GL_LUMINANCE16_ALPHA16
:
1719 return (ctx
->API
== API_OPENGL_COMPAT
&&
1720 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1724 case GL_INTENSITY12
:
1725 case GL_INTENSITY16
:
1726 return (ctx
->API
== API_OPENGL_COMPAT
&&
1727 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1737 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1739 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1748 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1750 case GL_SRGB8_ALPHA8_EXT
:
1751 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1752 case GL_STENCIL_INDEX
:
1753 case GL_STENCIL_INDEX1_EXT
:
1754 case GL_STENCIL_INDEX4_EXT
:
1755 case GL_STENCIL_INDEX16_EXT
:
1756 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1757 * OpenGL ES, but Mesa does not currently support them.
1759 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1760 case GL_STENCIL_INDEX8_EXT
:
1761 return GL_STENCIL_INDEX
;
1762 case GL_DEPTH_COMPONENT
:
1763 case GL_DEPTH_COMPONENT32
:
1764 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1765 case GL_DEPTH_COMPONENT16
:
1766 case GL_DEPTH_COMPONENT24
:
1767 return GL_DEPTH_COMPONENT
;
1768 case GL_DEPTH_STENCIL
:
1769 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1770 case GL_DEPTH24_STENCIL8
:
1771 return GL_DEPTH_STENCIL
;
1772 case GL_DEPTH_COMPONENT32F
:
1773 return ctx
->Version
>= 30
1774 || (ctx
->API
== API_OPENGL_COMPAT
&&
1775 ctx
->Extensions
.ARB_depth_buffer_float
)
1776 ? GL_DEPTH_COMPONENT
: 0;
1777 case GL_DEPTH32F_STENCIL8
:
1778 return ctx
->Version
>= 30
1779 || (ctx
->API
== API_OPENGL_COMPAT
&&
1780 ctx
->Extensions
.ARB_depth_buffer_float
)
1781 ? GL_DEPTH_STENCIL
: 0;
1784 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1787 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1791 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1794 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1796 /* signed normalized texture formats */
1800 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1805 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1809 case GL_RGB16_SNORM
:
1810 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1813 case GL_RGBA8_SNORM
:
1814 case GL_RGBA16_SNORM
:
1815 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1817 case GL_ALPHA_SNORM
:
1818 case GL_ALPHA8_SNORM
:
1819 case GL_ALPHA16_SNORM
:
1820 return ctx
->API
== API_OPENGL_COMPAT
&&
1821 ctx
->Extensions
.EXT_texture_snorm
&&
1822 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1823 case GL_LUMINANCE_SNORM
:
1824 case GL_LUMINANCE8_SNORM
:
1825 case GL_LUMINANCE16_SNORM
:
1826 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1828 case GL_LUMINANCE_ALPHA_SNORM
:
1829 case GL_LUMINANCE8_ALPHA8_SNORM
:
1830 case GL_LUMINANCE16_ALPHA16_SNORM
:
1831 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1832 ? GL_LUMINANCE_ALPHA
: 0;
1833 case GL_INTENSITY_SNORM
:
1834 case GL_INTENSITY8_SNORM
:
1835 case GL_INTENSITY16_SNORM
:
1836 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1841 return ((_mesa_is_desktop_gl(ctx
) &&
1842 ctx
->Extensions
.ARB_texture_rg
&&
1843 ctx
->Extensions
.ARB_texture_float
) ||
1844 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1848 return ((_mesa_is_desktop_gl(ctx
) &&
1849 ctx
->Extensions
.ARB_texture_rg
&&
1850 ctx
->Extensions
.ARB_texture_float
) ||
1851 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1855 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1859 return ((_mesa_is_desktop_gl(ctx
) &&
1860 ctx
->Extensions
.ARB_texture_float
) ||
1861 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1863 case GL_ALPHA16F_ARB
:
1864 case GL_ALPHA32F_ARB
:
1865 return ctx
->API
== API_OPENGL_COMPAT
&&
1866 ctx
->Extensions
.ARB_texture_float
&&
1867 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1868 case GL_LUMINANCE16F_ARB
:
1869 case GL_LUMINANCE32F_ARB
:
1870 return ctx
->API
== API_OPENGL_COMPAT
&&
1871 ctx
->Extensions
.ARB_texture_float
&&
1872 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1873 case GL_LUMINANCE_ALPHA16F_ARB
:
1874 case GL_LUMINANCE_ALPHA32F_ARB
:
1875 return ctx
->API
== API_OPENGL_COMPAT
&&
1876 ctx
->Extensions
.ARB_texture_float
&&
1877 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1878 case GL_INTENSITY16F_ARB
:
1879 case GL_INTENSITY32F_ARB
:
1880 return ctx
->API
== API_OPENGL_COMPAT
&&
1881 ctx
->Extensions
.ARB_texture_float
&&
1882 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1883 case GL_R11F_G11F_B10F
:
1884 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1885 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1888 case GL_RGBA8UI_EXT
:
1889 case GL_RGBA16UI_EXT
:
1890 case GL_RGBA32UI_EXT
:
1892 case GL_RGBA16I_EXT
:
1893 case GL_RGBA32I_EXT
:
1894 return ctx
->Version
>= 30
1895 || (_mesa_is_desktop_gl(ctx
) &&
1896 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1899 case GL_RGB16UI_EXT
:
1900 case GL_RGB32UI_EXT
:
1904 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1912 return ctx
->Version
>= 30
1913 || (_mesa_is_desktop_gl(ctx
) &&
1914 ctx
->Extensions
.ARB_texture_rg
&&
1915 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1923 return ctx
->Version
>= 30
1924 || (_mesa_is_desktop_gl(ctx
) &&
1925 ctx
->Extensions
.ARB_texture_rg
&&
1926 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1928 case GL_INTENSITY8I_EXT
:
1929 case GL_INTENSITY8UI_EXT
:
1930 case GL_INTENSITY16I_EXT
:
1931 case GL_INTENSITY16UI_EXT
:
1932 case GL_INTENSITY32I_EXT
:
1933 case GL_INTENSITY32UI_EXT
:
1934 return ctx
->API
== API_OPENGL_COMPAT
&&
1935 ctx
->Extensions
.EXT_texture_integer
&&
1936 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1938 case GL_LUMINANCE8I_EXT
:
1939 case GL_LUMINANCE8UI_EXT
:
1940 case GL_LUMINANCE16I_EXT
:
1941 case GL_LUMINANCE16UI_EXT
:
1942 case GL_LUMINANCE32I_EXT
:
1943 case GL_LUMINANCE32UI_EXT
:
1944 return ctx
->API
== API_OPENGL_COMPAT
&&
1945 ctx
->Extensions
.EXT_texture_integer
&&
1946 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1948 case GL_LUMINANCE_ALPHA8I_EXT
:
1949 case GL_LUMINANCE_ALPHA8UI_EXT
:
1950 case GL_LUMINANCE_ALPHA16I_EXT
:
1951 case GL_LUMINANCE_ALPHA16UI_EXT
:
1952 case GL_LUMINANCE_ALPHA32I_EXT
:
1953 case GL_LUMINANCE_ALPHA32UI_EXT
:
1954 return ctx
->API
== API_OPENGL_COMPAT
&&
1955 ctx
->Extensions
.EXT_texture_integer
&&
1956 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1958 case GL_ALPHA8I_EXT
:
1959 case GL_ALPHA8UI_EXT
:
1960 case GL_ALPHA16I_EXT
:
1961 case GL_ALPHA16UI_EXT
:
1962 case GL_ALPHA32I_EXT
:
1963 case GL_ALPHA32UI_EXT
:
1964 return ctx
->API
== API_OPENGL_COMPAT
&&
1965 ctx
->Extensions
.EXT_texture_integer
&&
1966 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1969 return (_mesa_is_desktop_gl(ctx
) &&
1970 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1971 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1974 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1983 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1986 invalidate_rb(GLuint key
, void *data
, void *userData
)
1988 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1989 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1991 /* If this is a user-created FBO */
1992 if (_mesa_is_user_fbo(fb
)) {
1994 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1995 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1996 if (att
->Type
== GL_RENDERBUFFER
&&
1997 att
->Renderbuffer
== rb
) {
1998 /* Mark fb status as indeterminate to force re-validation */
2007 /** sentinal value, see below */
2008 #define NO_SAMPLES 1000
2011 _mesa_renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2012 GLenum internalFormat
, GLsizei width
,
2013 GLsizei height
, GLsizei samples
)
2015 const GLenum baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
2017 assert(baseFormat
!= 0);
2018 assert(width
>= 0 && width
<= (GLsizei
) ctx
->Const
.MaxRenderbufferSize
);
2019 assert(height
>= 0 && height
<= (GLsizei
) ctx
->Const
.MaxRenderbufferSize
);
2020 assert(samples
!= NO_SAMPLES
);
2022 assert(samples
> 0);
2023 assert(_mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
2024 internalFormat
, samples
) == GL_NO_ERROR
);
2027 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2029 if (rb
->InternalFormat
== internalFormat
&&
2030 rb
->Width
== (GLuint
) width
&&
2031 rb
->Height
== (GLuint
) height
&&
2032 rb
->NumSamples
== samples
) {
2033 /* no change in allocation needed */
2037 /* These MUST get set by the AllocStorage func */
2038 rb
->Format
= MESA_FORMAT_NONE
;
2039 rb
->NumSamples
= samples
;
2041 /* Now allocate the storage */
2042 assert(rb
->AllocStorage
);
2043 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
2044 /* No error - check/set fields now */
2045 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
2046 assert(rb
->Width
== (GLuint
) width
);
2047 assert(rb
->Height
== (GLuint
) height
);
2048 rb
->InternalFormat
= internalFormat
;
2049 rb
->_BaseFormat
= baseFormat
;
2050 assert(rb
->_BaseFormat
!= 0);
2053 /* Probably ran out of memory - clear the fields */
2056 rb
->Format
= MESA_FORMAT_NONE
;
2057 rb
->InternalFormat
= GL_NONE
;
2058 rb
->_BaseFormat
= GL_NONE
;
2062 /* Invalidate the framebuffers the renderbuffer is attached in. */
2063 if (rb
->AttachedAnytime
) {
2064 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
2069 * Helper function used by renderbuffer_storage_direct() and
2070 * renderbuffer_storage_target().
2071 * samples will be NO_SAMPLES if called by a non-multisample function.
2074 renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
2075 GLenum internalFormat
, GLsizei width
,
2076 GLsizei height
, GLsizei samples
, const char *func
)
2079 GLenum sample_count_error
;
2081 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
2082 if (baseFormat
== 0) {
2083 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
2084 func
, _mesa_enum_to_string(internalFormat
));
2088 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2089 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid width %d)", func
,
2094 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
2095 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid height %d)", func
,
2100 if (samples
== NO_SAMPLES
) {
2101 /* NumSamples == 0 indicates non-multisampling */
2105 /* check the sample count;
2106 * note: driver may choose to use more samples than what's requested
2108 sample_count_error
= _mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
2109 internalFormat
, samples
);
2111 /* Section 2.5 (GL Errors) of OpenGL 3.0 specification, page 16:
2113 * "If a negative number is provided where an argument of type sizei or
2114 * sizeiptr is specified, the error INVALID VALUE is generated."
2117 sample_count_error
= GL_INVALID_VALUE
;
2120 if (sample_count_error
!= GL_NO_ERROR
) {
2121 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
2126 _mesa_renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
);
2130 * Helper function used by _mesa_NamedRenderbufferStorage*().
2131 * samples will be NO_SAMPLES if called by a non-multisample function.
2134 renderbuffer_storage_named(GLuint renderbuffer
, GLenum internalFormat
,
2135 GLsizei width
, GLsizei height
, GLsizei samples
,
2138 GET_CURRENT_CONTEXT(ctx
);
2140 if (MESA_VERBOSE
& VERBOSE_API
) {
2141 if (samples
== NO_SAMPLES
)
2142 _mesa_debug(ctx
, "%s(%u, %s, %d, %d)\n",
2144 _mesa_enum_to_string(internalFormat
),
2147 _mesa_debug(ctx
, "%s(%u, %s, %d, %d, %d)\n",
2149 _mesa_enum_to_string(internalFormat
),
2150 width
, height
, samples
);
2153 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2154 if (!rb
|| rb
== &DummyRenderbuffer
) {
2155 /* ID was reserved, but no real renderbuffer object made yet */
2156 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(invalid renderbuffer %u)",
2157 func
, renderbuffer
);
2161 renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
, func
);
2165 * Helper function used by _mesa_RenderbufferStorage() and
2166 * _mesa_RenderbufferStorageMultisample().
2167 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
2170 renderbuffer_storage_target(GLenum target
, GLenum internalFormat
,
2171 GLsizei width
, GLsizei height
, GLsizei samples
,
2174 GET_CURRENT_CONTEXT(ctx
);
2176 if (MESA_VERBOSE
& VERBOSE_API
) {
2177 if (samples
== NO_SAMPLES
)
2178 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
2180 _mesa_enum_to_string(target
),
2181 _mesa_enum_to_string(internalFormat
),
2184 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
2186 _mesa_enum_to_string(target
),
2187 _mesa_enum_to_string(internalFormat
),
2188 width
, height
, samples
);
2191 if (target
!= GL_RENDERBUFFER_EXT
) {
2192 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
2196 if (!ctx
->CurrentRenderbuffer
) {
2197 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(no renderbuffer bound)",
2202 renderbuffer_storage(ctx
, ctx
->CurrentRenderbuffer
, internalFormat
, width
,
2203 height
, samples
, func
);
2208 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
2210 struct gl_renderbuffer
*rb
;
2211 GET_CURRENT_CONTEXT(ctx
);
2213 if (!ctx
->Extensions
.OES_EGL_image
) {
2214 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2215 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
2219 if (target
!= GL_RENDERBUFFER
) {
2220 _mesa_error(ctx
, GL_INVALID_ENUM
,
2221 "EGLImageTargetRenderbufferStorageOES");
2225 rb
= ctx
->CurrentRenderbuffer
;
2227 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2228 "EGLImageTargetRenderbufferStorageOES");
2232 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2234 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
2239 * Helper function for _mesa_GetRenderbufferParameteriv() and
2240 * _mesa_GetFramebufferAttachmentParameteriv()
2241 * We have to be careful to respect the base format. For example, if a
2242 * renderbuffer/texture was created with internalFormat=GL_RGB but the
2243 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
2244 * we need to return zero.
2247 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
2249 if (_mesa_base_format_has_channel(baseFormat
, pname
))
2250 return _mesa_get_format_bits(format
, pname
);
2258 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
2259 GLsizei width
, GLsizei height
)
2261 /* GL_ARB_fbo says calling this function is equivalent to calling
2262 * glRenderbufferStorageMultisample() with samples=0. We pass in
2263 * a token value here just for error reporting purposes.
2265 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2266 NO_SAMPLES
, "glRenderbufferStorage");
2271 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
2272 GLenum internalFormat
,
2273 GLsizei width
, GLsizei height
)
2275 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2276 samples
, "glRenderbufferStorageMultisample");
2281 * OpenGL ES version of glRenderBufferStorage.
2284 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
2285 GLsizei width
, GLsizei height
)
2287 switch (internalFormat
) {
2289 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
2290 /* choose a closest format */
2291 internalFormat
= GL_RGB5
;
2297 renderbuffer_storage_target(target
, internalFormat
, width
, height
, 0,
2298 "glRenderbufferStorageEXT");
2302 _mesa_NamedRenderbufferStorage(GLuint renderbuffer
, GLenum internalformat
,
2303 GLsizei width
, GLsizei height
)
2305 /* GL_ARB_fbo says calling this function is equivalent to calling
2306 * glRenderbufferStorageMultisample() with samples=0. We pass in
2307 * a token value here just for error reporting purposes.
2309 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2310 NO_SAMPLES
, "glNamedRenderbufferStorage");
2314 _mesa_NamedRenderbufferStorageMultisample(GLuint renderbuffer
, GLsizei samples
,
2315 GLenum internalformat
,
2316 GLsizei width
, GLsizei height
)
2318 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2320 "glNamedRenderbufferStorageMultisample");
2325 get_render_buffer_parameteriv(struct gl_context
*ctx
,
2326 struct gl_renderbuffer
*rb
, GLenum pname
,
2327 GLint
*params
, const char *func
)
2329 /* No need to flush here since we're just quering state which is
2330 * not effected by rendering.
2334 case GL_RENDERBUFFER_WIDTH_EXT
:
2335 *params
= rb
->Width
;
2337 case GL_RENDERBUFFER_HEIGHT_EXT
:
2338 *params
= rb
->Height
;
2340 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
2341 *params
= rb
->InternalFormat
;
2343 case GL_RENDERBUFFER_RED_SIZE_EXT
:
2344 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
2345 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
2346 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
2347 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
2348 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
2349 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
2351 case GL_RENDERBUFFER_SAMPLES
:
2352 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
2353 || _mesa_is_gles3(ctx
)) {
2354 *params
= rb
->NumSamples
;
2359 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname=%s)", func
,
2360 _mesa_enum_to_string(pname
));
2367 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2369 GET_CURRENT_CONTEXT(ctx
);
2371 if (target
!= GL_RENDERBUFFER_EXT
) {
2372 _mesa_error(ctx
, GL_INVALID_ENUM
,
2373 "glGetRenderbufferParameterivEXT(target)");
2377 if (!ctx
->CurrentRenderbuffer
) {
2378 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetRenderbufferParameterivEXT"
2379 "(no renderbuffer bound)");
2383 get_render_buffer_parameteriv(ctx
, ctx
->CurrentRenderbuffer
, pname
,
2384 params
, "glGetRenderbufferParameteriv");
2389 _mesa_GetNamedRenderbufferParameteriv(GLuint renderbuffer
, GLenum pname
,
2392 GET_CURRENT_CONTEXT(ctx
);
2394 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2395 if (!rb
|| rb
== &DummyRenderbuffer
) {
2396 /* ID was reserved, but no real renderbuffer object made yet */
2397 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetNamedRenderbufferParameteriv"
2398 "(invalid renderbuffer %i)", renderbuffer
);
2402 get_render_buffer_parameteriv(ctx
, rb
, pname
, params
,
2403 "glGetNamedRenderbufferParameteriv");
2407 GLboolean GLAPIENTRY
2408 _mesa_IsFramebuffer(GLuint framebuffer
)
2410 GET_CURRENT_CONTEXT(ctx
);
2411 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2413 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2414 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
2422 * Check if any of the attachments of the given framebuffer are textures
2423 * (render to texture). Call ctx->Driver.RenderTexture() for such
2427 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2430 assert(ctx
->Driver
.RenderTexture
);
2432 if (_mesa_is_winsys_fbo(fb
))
2433 return; /* can't render to texture with winsys framebuffers */
2435 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2436 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2437 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2438 && driver_RenderTexture_is_safe(att
)) {
2439 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2446 * Examine all the framebuffer's attachments to see if any are textures.
2447 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2448 * notify the device driver that the texture image may have changed.
2451 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2453 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2454 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2457 if (ctx
->Driver
.FinishRenderTexture
) {
2459 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2460 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2461 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2462 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2463 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2471 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2473 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2474 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2475 GLboolean bindReadBuf
, bindDrawBuf
;
2476 GET_CURRENT_CONTEXT(ctx
);
2479 case GL_DRAW_FRAMEBUFFER_EXT
:
2480 bindDrawBuf
= GL_TRUE
;
2481 bindReadBuf
= GL_FALSE
;
2483 case GL_READ_FRAMEBUFFER_EXT
:
2484 bindDrawBuf
= GL_FALSE
;
2485 bindReadBuf
= GL_TRUE
;
2487 case GL_FRAMEBUFFER_EXT
:
2488 bindDrawBuf
= GL_TRUE
;
2489 bindReadBuf
= GL_TRUE
;
2492 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2497 /* Binding a user-created framebuffer object */
2498 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2499 if (newDrawFb
== &DummyFramebuffer
) {
2500 /* ID was reserved, but no real framebuffer object made yet */
2503 else if (!newDrawFb
&& !allow_user_names
) {
2504 /* All FBO IDs must be Gen'd */
2505 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2510 /* create new framebuffer object */
2511 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2513 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2516 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2518 newReadFb
= newDrawFb
;
2521 /* Binding the window system framebuffer (which was originally set
2522 * with MakeCurrent).
2524 newDrawFb
= ctx
->WinSysDrawBuffer
;
2525 newReadFb
= ctx
->WinSysReadBuffer
;
2529 assert(newDrawFb
!= &DummyFramebuffer
);
2531 /* save pointers to current/old framebuffers */
2532 oldDrawFb
= ctx
->DrawBuffer
;
2533 oldReadFb
= ctx
->ReadBuffer
;
2535 /* check if really changing bindings */
2536 if (oldDrawFb
== newDrawFb
)
2537 bindDrawBuf
= GL_FALSE
;
2538 if (oldReadFb
== newReadFb
)
2539 bindReadBuf
= GL_FALSE
;
2542 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2544 * We also check if we're beginning and/or ending render-to-texture.
2545 * When a framebuffer with texture attachments is unbound, call
2546 * ctx->Driver.FinishRenderTexture().
2547 * When a framebuffer with texture attachments is bound, call
2548 * ctx->Driver.RenderTexture().
2550 * Note that if the ReadBuffer has texture attachments we don't consider
2551 * that a render-to-texture case.
2554 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2556 /* check if old readbuffer was render-to-texture */
2557 check_end_texture_render(ctx
, oldReadFb
);
2559 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2563 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2565 /* check if old framebuffer had any texture attachments */
2567 check_end_texture_render(ctx
, oldDrawFb
);
2569 /* check if newly bound framebuffer has any texture attachments */
2570 check_begin_texture_render(ctx
, newDrawFb
);
2572 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2575 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2576 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2581 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2583 GET_CURRENT_CONTEXT(ctx
);
2585 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2586 * point, but they allow the use of user-generated names.
2588 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2593 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2595 /* This function should not be in the dispatch table for core profile /
2596 * OpenGL 3.1, so execution should never get here in those cases -- no
2597 * need for an explicit test.
2599 bind_framebuffer(target
, framebuffer
, true);
2604 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2607 GET_CURRENT_CONTEXT(ctx
);
2610 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteFramebuffers(n < 0)");
2614 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2616 for (i
= 0; i
< n
; i
++) {
2617 if (framebuffers
[i
] > 0) {
2618 struct gl_framebuffer
*fb
;
2619 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2621 assert(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2623 /* check if deleting currently bound framebuffer object */
2624 if (fb
== ctx
->DrawBuffer
) {
2626 assert(fb
->RefCount
>= 2);
2627 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2629 if (fb
== ctx
->ReadBuffer
) {
2631 assert(fb
->RefCount
>= 2);
2632 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2635 /* remove from hash table immediately, to free the ID */
2636 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2638 if (fb
!= &DummyFramebuffer
) {
2639 /* But the object will not be freed until it's no longer
2640 * bound in any context.
2642 _mesa_reference_framebuffer(&fb
, NULL
);
2651 * This is the implementation for glGenFramebuffers and glCreateFramebuffers.
2652 * It is not exposed to the rest of Mesa to encourage the use of
2653 * nameless buffers in driver internals.
2656 create_framebuffers(GLsizei n
, GLuint
*framebuffers
, bool dsa
)
2658 GET_CURRENT_CONTEXT(ctx
);
2661 struct gl_framebuffer
*fb
;
2663 const char *func
= dsa
? "glCreateFramebuffers" : "glGenFramebuffers";
2666 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n < 0)", func
);
2673 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2675 for (i
= 0; i
< n
; i
++) {
2676 GLuint name
= first
+ i
;
2677 framebuffers
[i
] = name
;
2680 fb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffers
[i
]);
2682 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
2687 fb
= &DummyFramebuffer
;
2689 mtx_lock(&ctx
->Shared
->Mutex
);
2690 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, fb
);
2691 mtx_unlock(&ctx
->Shared
->Mutex
);
2697 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2699 create_framebuffers(n
, framebuffers
, false);
2704 _mesa_CreateFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2706 create_framebuffers(n
, framebuffers
, true);
2711 _mesa_check_framebuffer_status(struct gl_context
*ctx
,
2712 struct gl_framebuffer
*buffer
)
2714 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2716 if (_mesa_is_winsys_fbo(buffer
)) {
2717 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2718 if (buffer
!= &IncompleteFramebuffer
) {
2719 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2721 return GL_FRAMEBUFFER_UNDEFINED
;
2725 /* No need to flush here */
2727 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2728 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2731 return buffer
->_Status
;
2736 _mesa_CheckFramebufferStatus(GLenum target
)
2738 struct gl_framebuffer
*fb
;
2739 GET_CURRENT_CONTEXT(ctx
);
2741 if (MESA_VERBOSE
& VERBOSE_API
)
2742 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2743 _mesa_enum_to_string(target
));
2745 fb
= get_framebuffer_target(ctx
, target
);
2747 _mesa_error(ctx
, GL_INVALID_ENUM
,
2748 "glCheckFramebufferStatus(invalid target %s)",
2749 _mesa_enum_to_string(target
));
2753 return _mesa_check_framebuffer_status(ctx
, fb
);
2758 _mesa_CheckNamedFramebufferStatus(GLuint framebuffer
, GLenum target
)
2760 struct gl_framebuffer
*fb
;
2761 GET_CURRENT_CONTEXT(ctx
);
2763 /* Validate the target (for conformance's sake) and grab a reference to the
2764 * default framebuffer in case framebuffer = 0.
2765 * Section 9.4 Framebuffer Completeness of the OpenGL 4.5 core spec
2766 * (30.10.2014, PDF page 336) says:
2767 * "If framebuffer is zero, then the status of the default read or
2768 * draw framebuffer (as determined by target) is returned."
2771 case GL_DRAW_FRAMEBUFFER
:
2772 case GL_FRAMEBUFFER
:
2773 fb
= ctx
->WinSysDrawBuffer
;
2775 case GL_READ_FRAMEBUFFER
:
2776 fb
= ctx
->WinSysReadBuffer
;
2779 _mesa_error(ctx
, GL_INVALID_ENUM
,
2780 "glCheckNamedFramebufferStatus(invalid target %s)",
2781 _mesa_enum_to_string(target
));
2786 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
2787 "glCheckNamedFramebufferStatus");
2792 return _mesa_check_framebuffer_status(ctx
, fb
);
2797 * Replicate the src attachment point. Used by framebuffer_texture() when
2798 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2799 * GL_STENCIL_ATTACHMENT.
2802 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2803 gl_buffer_index dst
,
2804 gl_buffer_index src
)
2806 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2807 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2809 assert(src_att
->Texture
!= NULL
);
2810 assert(src_att
->Renderbuffer
!= NULL
);
2812 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2813 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2814 dst_att
->Type
= src_att
->Type
;
2815 dst_att
->Complete
= src_att
->Complete
;
2816 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2817 dst_att
->Zoffset
= src_att
->Zoffset
;
2822 * Common code called by gl*FramebufferTexture*() to retrieve the correct
2823 * texture object pointer.
2825 * \param texObj where the pointer to the texture object is returned. Note
2826 * that a successful call may return texObj = NULL.
2828 * \return true if no errors, false if errors
2831 get_texture_for_framebuffer(struct gl_context
*ctx
, GLuint texture
,
2832 bool layered
, const char *caller
,
2833 struct gl_texture_object
**texObj
)
2835 *texObj
= NULL
; /* This will get returned if texture = 0. */
2840 *texObj
= _mesa_lookup_texture(ctx
, texture
);
2841 if (*texObj
== NULL
|| (*texObj
)->Target
== 0) {
2842 /* Can't render to a non-existent texture object.
2844 * The OpenGL 4.5 core spec (02.02.2015) in Section 9.2 Binding and
2845 * Managing Framebuffer Objects specifies a different error
2846 * depending upon the calling function (PDF pages 325-328).
2847 * *FramebufferTexture (where layered = GL_TRUE) throws invalid
2848 * value, while the other commands throw invalid operation (where
2849 * layered = GL_FALSE).
2851 const GLenum error
= layered
? GL_INVALID_VALUE
:
2852 GL_INVALID_OPERATION
;
2853 _mesa_error(ctx
, error
,
2854 "%s(non-existent texture %u)", caller
, texture
);
2863 * Common code called by gl*FramebufferTexture() to verify the texture target
2864 * and decide whether or not the attachment should truly be considered
2867 * \param layered true if attachment should be considered layered, false if
2870 * \return true if no errors, false if errors
2873 check_layered_texture_target(struct gl_context
*ctx
, GLenum target
,
2874 const char *caller
, GLboolean
*layered
)
2880 case GL_TEXTURE_1D_ARRAY_EXT
:
2881 case GL_TEXTURE_2D_ARRAY_EXT
:
2882 case GL_TEXTURE_CUBE_MAP
:
2883 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2884 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2888 case GL_TEXTURE_RECTANGLE
:
2889 case GL_TEXTURE_2D_MULTISAMPLE
:
2890 /* These texture types are valid to pass to
2891 * glFramebufferTexture(), but since they aren't layered, it
2892 * is equivalent to calling glFramebufferTexture{1D,2D}().
2894 *layered
= GL_FALSE
;
2898 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2899 "%s(invalid texture target %s)", caller
,
2900 _mesa_enum_to_string(target
));
2906 * Common code called by gl*FramebufferTextureLayer() to verify the texture
2909 * \return true if no errors, false if errors
2912 check_texture_target(struct gl_context
*ctx
, GLenum target
,
2915 /* We're being called by glFramebufferTextureLayer().
2916 * The only legal texture types for that function are 3D,
2917 * cube-map, and 1D/2D/cube-map array textures.
2919 * We don't need to check for GL_ARB_texture_cube_map_array because the
2920 * application wouldn't have been able to create a texture with a
2921 * GL_TEXTURE_CUBE_MAP_ARRAY target if the extension were not enabled.
2925 case GL_TEXTURE_1D_ARRAY
:
2926 case GL_TEXTURE_2D_ARRAY
:
2927 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2928 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2930 case GL_TEXTURE_CUBE_MAP
:
2931 /* We don't need to check the extension (GL_ARB_direct_state_access) or
2932 * GL version (4.5) for GL_TEXTURE_CUBE_MAP because DSA is always
2933 * enabled in core profile. This can be called from
2934 * _mesa_FramebufferTextureLayer in compatibility profile (OpenGL 3.0),
2935 * so we do have to check the profile.
2937 return ctx
->API
== API_OPENGL_CORE
;
2940 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2941 "%s(invalid texture target %s)", caller
,
2942 _mesa_enum_to_string(target
));
2948 * Common code called by glFramebufferTexture*D() to verify the texture
2951 * \return true if no errors, false if errors
2954 check_textarget(struct gl_context
*ctx
, int dims
, GLenum target
,
2955 GLenum textarget
, const char *caller
)
2961 switch (textarget
) {
2964 case GL_TEXTURE_1D_ARRAY
:
2965 err
= !ctx
->Extensions
.EXT_texture_array
;
2972 switch (textarget
) {
2975 case GL_TEXTURE_RECTANGLE
:
2976 err
= _mesa_is_gles(ctx
)
2977 || !ctx
->Extensions
.NV_texture_rectangle
;
2979 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2980 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2981 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2982 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2983 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2984 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2985 err
= !ctx
->Extensions
.ARB_texture_cube_map
;
2987 case GL_TEXTURE_2D_ARRAY
:
2988 err
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2989 || !ctx
->Extensions
.EXT_texture_array
;
2991 case GL_TEXTURE_2D_MULTISAMPLE
:
2992 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2993 err
= (_mesa_is_gles(ctx
) ||
2994 !ctx
->Extensions
.ARB_texture_multisample
) &&
2995 !_mesa_is_gles31(ctx
);
3002 if (textarget
!= GL_TEXTURE_3D
)
3010 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3011 "%s(invalid textarget %s)",
3012 caller
, _mesa_enum_to_string(textarget
));
3016 /* Make sure textarget is consistent with the texture's type */
3017 err
= (target
== GL_TEXTURE_CUBE_MAP
) ?
3018 !_mesa_is_cube_face(textarget
): (target
!= textarget
);
3021 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3022 "%s(mismatched texture target)", caller
);
3031 * Common code called by gl*FramebufferTextureLayer() and
3032 * glFramebufferTexture3D() to validate the layer.
3034 * \return true if no errors, false if errors
3037 check_layer(struct gl_context
*ctx
, GLenum target
, GLint layer
,
3040 /* Page 306 (page 328 of the PDF) of the OpenGL 4.5 (Core Profile)
3043 * "An INVALID_VALUE error is generated if texture is non-zero
3044 * and layer is negative."
3047 _mesa_error(ctx
, GL_INVALID_VALUE
,
3048 "%s(layer %u < 0)", caller
, layer
);
3052 if (target
== GL_TEXTURE_3D
) {
3053 const GLuint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
3054 if (layer
>= maxSize
) {
3055 _mesa_error(ctx
, GL_INVALID_VALUE
,
3056 "%s(invalid layer %u)", caller
, layer
);
3060 else if ((target
== GL_TEXTURE_1D_ARRAY
) ||
3061 (target
== GL_TEXTURE_2D_ARRAY
) ||
3062 (target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
3063 (target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
3064 if (layer
>= ctx
->Const
.MaxArrayTextureLayers
) {
3065 _mesa_error(ctx
, GL_INVALID_VALUE
,
3066 "%s(layer %u >= GL_MAX_ARRAY_TEXTURE_LAYERS)",
3071 else if (target
== GL_TEXTURE_CUBE_MAP
) {
3073 _mesa_error(ctx
, GL_INVALID_VALUE
,
3074 "%s(layer %u >= 6)", caller
, layer
);
3084 * Common code called by all gl*FramebufferTexture*() entry points to verify
3087 * \return true if no errors, false if errors
3090 check_level(struct gl_context
*ctx
, GLenum target
, GLint level
,
3094 (level
>= _mesa_max_texture_levels(ctx
, target
))) {
3095 _mesa_error(ctx
, GL_INVALID_VALUE
,
3096 "%s(invalid level %d)", caller
, level
);
3105 _mesa_framebuffer_texture(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
3107 struct gl_texture_object
*texObj
, GLenum textarget
,
3108 GLint level
, GLuint layer
, GLboolean layered
,
3111 struct gl_renderbuffer_attachment
*att
;
3113 /* The window-system framebuffer object is immutable */
3114 if (_mesa_is_winsys_fbo(fb
)) {
3115 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(window-system framebuffer)",
3120 /* Not a hash lookup, so we can afford to get the attachment here. */
3121 att
= get_attachment(ctx
, fb
, attachment
);
3123 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3124 _mesa_enum_to_string(attachment
));
3128 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3130 mtx_lock(&fb
->Mutex
);
3132 if (attachment
== GL_DEPTH_ATTACHMENT
&&
3133 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
3134 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
3135 _mesa_tex_target_to_face(textarget
) ==
3136 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
3137 layer
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
3138 /* The texture object is already attached to the stencil attachment
3139 * point. Don't create a new renderbuffer; just reuse the stencil
3140 * attachment's. This is required to prevent a GL error in
3141 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
3143 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
3145 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
3146 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
3147 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
3148 _mesa_tex_target_to_face(textarget
) ==
3149 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
3150 layer
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
3151 /* As above, but with depth and stencil transposed. */
3152 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
3155 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
3156 level
, layer
, layered
);
3158 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3159 /* Above we created a new renderbuffer and attached it to the
3160 * depth attachment point. Now attach it to the stencil attachment
3163 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3164 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
3169 /* Set the render-to-texture flag. We'll check this flag in
3170 * glTexImage() and friends to determine if we need to revalidate
3171 * any FBOs that might be rendering into this texture.
3172 * This flag never gets cleared since it's non-trivial to determine
3173 * when all FBOs might be done rendering to this texture. That's OK
3174 * though since it's uncommon to render to a texture then repeatedly
3175 * call glTexImage() to change images in the texture.
3177 texObj
->_RenderToTexture
= GL_TRUE
;
3180 remove_attachment(ctx
, att
);
3181 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3182 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
3183 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
3187 invalidate_framebuffer(fb
);
3189 mtx_unlock(&fb
->Mutex
);
3194 framebuffer_texture_with_dims(int dims
, GLenum target
,
3195 GLenum attachment
, GLenum textarget
,
3196 GLuint texture
, GLint level
, GLint layer
,
3199 GET_CURRENT_CONTEXT(ctx
);
3200 struct gl_framebuffer
*fb
;
3201 struct gl_texture_object
*texObj
;
3203 /* Get the framebuffer object */
3204 fb
= get_framebuffer_target(ctx
, target
);
3206 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid target %s)", caller
,
3207 _mesa_enum_to_string(target
));
3211 /* Get the texture object */
3212 if (!get_texture_for_framebuffer(ctx
, texture
, false, caller
, &texObj
))
3216 if (!check_textarget(ctx
, dims
, texObj
->Target
, textarget
, caller
))
3219 if ((dims
== 3) && !check_layer(ctx
, texObj
->Target
, layer
, caller
))
3223 if (!check_level(ctx
, textarget
, level
, caller
))
3226 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3227 layer
, GL_FALSE
, caller
);
3232 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
3233 GLenum textarget
, GLuint texture
, GLint level
)
3235 framebuffer_texture_with_dims(1, target
, attachment
, textarget
, texture
,
3236 level
, 0, "glFramebufferTexture1D");
3241 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
3242 GLenum textarget
, GLuint texture
, GLint level
)
3244 framebuffer_texture_with_dims(2, target
, attachment
, textarget
, texture
,
3245 level
, 0, "glFramebufferTexture2D");
3250 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
3251 GLenum textarget
, GLuint texture
,
3252 GLint level
, GLint layer
)
3254 framebuffer_texture_with_dims(3, target
, attachment
, textarget
, texture
,
3255 level
, layer
, "glFramebufferTexture3D");
3260 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
3261 GLuint texture
, GLint level
, GLint layer
)
3263 GET_CURRENT_CONTEXT(ctx
);
3264 struct gl_framebuffer
*fb
;
3265 struct gl_texture_object
*texObj
;
3266 GLenum textarget
= 0;
3268 const char *func
= "glFramebufferTextureLayer";
3270 /* Get the framebuffer object */
3271 fb
= get_framebuffer_target(ctx
, target
);
3273 _mesa_error(ctx
, GL_INVALID_ENUM
,
3274 "glFramebufferTextureLayer(invalid target %s)",
3275 _mesa_enum_to_string(target
));
3279 /* Get the texture object */
3280 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3284 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3287 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3290 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3293 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3294 assert(layer
>= 0 && layer
< 6);
3295 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3300 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3301 layer
, GL_FALSE
, func
);
3306 _mesa_NamedFramebufferTextureLayer(GLuint framebuffer
, GLenum attachment
,
3307 GLuint texture
, GLint level
, GLint layer
)
3309 GET_CURRENT_CONTEXT(ctx
);
3310 struct gl_framebuffer
*fb
;
3311 struct gl_texture_object
*texObj
;
3312 GLenum textarget
= 0;
3314 const char *func
= "glNamedFramebufferTextureLayer";
3316 /* Get the framebuffer object */
3317 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3321 /* Get the texture object */
3322 if (!get_texture_for_framebuffer(ctx
, texture
, false, func
, &texObj
))
3326 if (!check_texture_target(ctx
, texObj
->Target
, func
))
3329 if (!check_layer(ctx
, texObj
->Target
, layer
, func
))
3332 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3335 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
) {
3336 assert(layer
>= 0 && layer
< 6);
3337 textarget
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ layer
;
3342 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, textarget
, level
,
3343 layer
, GL_FALSE
, func
);
3348 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
3349 GLuint texture
, GLint level
)
3351 GET_CURRENT_CONTEXT(ctx
);
3352 struct gl_framebuffer
*fb
;
3353 struct gl_texture_object
*texObj
;
3354 GLboolean layered
= GL_FALSE
;
3356 const char *func
= "FramebufferTexture";
3358 if (!_mesa_has_geometry_shaders(ctx
)) {
3359 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3360 "unsupported function (glFramebufferTexture) called");
3364 /* Get the framebuffer object */
3365 fb
= get_framebuffer_target(ctx
, target
);
3367 _mesa_error(ctx
, GL_INVALID_ENUM
,
3368 "glFramebufferTexture(invalid target %s)",
3369 _mesa_enum_to_string(target
));
3373 /* Get the texture object */
3374 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3378 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
, &layered
))
3381 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3385 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3391 _mesa_NamedFramebufferTexture(GLuint framebuffer
, GLenum attachment
,
3392 GLuint texture
, GLint level
)
3394 GET_CURRENT_CONTEXT(ctx
);
3395 struct gl_framebuffer
*fb
;
3396 struct gl_texture_object
*texObj
;
3397 GLboolean layered
= GL_FALSE
;
3399 const char *func
= "glNamedFramebufferTexture";
3401 if (!_mesa_has_geometry_shaders(ctx
)) {
3402 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3403 "unsupported function (glNamedFramebufferTexture) called");
3407 /* Get the framebuffer object */
3408 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
, func
);
3412 /* Get the texture object */
3413 if (!get_texture_for_framebuffer(ctx
, texture
, true, func
, &texObj
))
3417 if (!check_layered_texture_target(ctx
, texObj
->Target
, func
,
3421 if (!check_level(ctx
, texObj
->Target
, level
, func
))
3425 _mesa_framebuffer_texture(ctx
, fb
, attachment
, texObj
, 0, level
,
3431 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
3432 struct gl_framebuffer
*fb
,
3434 struct gl_renderbuffer
*rb
)
3436 assert(!_mesa_is_winsys_fbo(fb
));
3438 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
3440 assert(ctx
->Driver
.FramebufferRenderbuffer
);
3441 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
3443 /* Some subsequent GL commands may depend on the framebuffer's visual
3444 * after the binding is updated. Update visual info now.
3446 _mesa_update_framebuffer_visual(ctx
, fb
);
3450 framebuffer_renderbuffer(struct gl_context
*ctx
,
3451 struct gl_framebuffer
*fb
,
3453 struct gl_renderbuffer
*rb
,
3456 struct gl_renderbuffer_attachment
*att
;
3458 if (_mesa_is_winsys_fbo(fb
)) {
3459 /* Can't attach new renderbuffers to a window system framebuffer */
3460 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3461 "%s(window-system framebuffer)", func
);
3465 att
= get_attachment(ctx
, fb
, attachment
);
3467 _mesa_error(ctx
, GL_INVALID_ENUM
,
3468 "%s(invalid attachment %s)", func
,
3469 _mesa_enum_to_string(attachment
));
3473 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
3474 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
3475 /* make sure the renderbuffer is a depth/stencil format */
3476 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
3477 if (baseFormat
!= GL_DEPTH_STENCIL
) {
3478 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3479 "%s(renderbuffer is not DEPTH_STENCIL format)", func
);
3484 _mesa_framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
);
3488 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
3489 GLenum renderbuffertarget
,
3490 GLuint renderbuffer
)
3492 struct gl_framebuffer
*fb
;
3493 struct gl_renderbuffer
*rb
;
3494 GET_CURRENT_CONTEXT(ctx
);
3496 fb
= get_framebuffer_target(ctx
, target
);
3498 _mesa_error(ctx
, GL_INVALID_ENUM
,
3499 "glFramebufferRenderbuffer(invalid target %s)",
3500 _mesa_enum_to_string(target
));
3504 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3505 _mesa_error(ctx
, GL_INVALID_ENUM
,
3506 "glFramebufferRenderbuffer(renderbuffertarget is not "
3507 "GL_RENDERBUFFER)");
3512 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3513 "glFramebufferRenderbuffer");
3518 /* remove renderbuffer attachment */
3522 framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3523 "glFramebufferRenderbuffer");
3528 _mesa_NamedFramebufferRenderbuffer(GLuint framebuffer
, GLenum attachment
,
3529 GLenum renderbuffertarget
,
3530 GLuint renderbuffer
)
3532 struct gl_framebuffer
*fb
;
3533 struct gl_renderbuffer
*rb
;
3534 GET_CURRENT_CONTEXT(ctx
);
3536 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3537 "glNamedFramebufferRenderbuffer");
3541 if (renderbuffertarget
!= GL_RENDERBUFFER
) {
3542 _mesa_error(ctx
, GL_INVALID_ENUM
,
3543 "glNamedFramebufferRenderbuffer(renderbuffertarget is not "
3544 "GL_RENDERBUFFER)");
3549 rb
= _mesa_lookup_renderbuffer_err(ctx
, renderbuffer
,
3550 "glNamedFramebufferRenderbuffer");
3555 /* remove renderbuffer attachment */
3559 framebuffer_renderbuffer(ctx
, fb
, attachment
, rb
,
3560 "glNamedFramebufferRenderbuffer");
3565 _mesa_get_framebuffer_attachment_parameter(struct gl_context
*ctx
,
3566 struct gl_framebuffer
*buffer
,
3567 GLenum attachment
, GLenum pname
,
3568 GLint
*params
, const char *caller
)
3570 const struct gl_renderbuffer_attachment
*att
;
3573 /* The error differs in GL and GLES. */
3574 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
3576 if (_mesa_is_winsys_fbo(buffer
)) {
3577 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
3580 * "If the framebuffer currently bound to target is zero, then
3581 * INVALID_OPERATION is generated."
3583 * The EXT_framebuffer_object spec has the same wording, and the
3584 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
3587 if ((!_mesa_is_desktop_gl(ctx
) ||
3588 !ctx
->Extensions
.ARB_framebuffer_object
)
3589 && !_mesa_is_gles3(ctx
)) {
3590 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3591 "%s(window-system framebuffer)", caller
);
3595 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
3596 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
3597 _mesa_error(ctx
, GL_INVALID_ENUM
,
3598 "%s(invalid attachment %s)", caller
,
3599 _mesa_enum_to_string(attachment
));
3602 /* the default / window-system FBO */
3603 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
3606 /* user-created framebuffer FBO */
3607 att
= get_attachment(ctx
, buffer
, attachment
);
3611 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", caller
,
3612 _mesa_enum_to_string(attachment
));
3616 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3617 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
3618 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
3619 /* This behavior is first specified in OpenGL 4.4 specification.
3621 * From the OpenGL 4.4 spec page 275:
3622 * "This query cannot be performed for a combined depth+stencil
3623 * attachment, since it does not have a single format."
3625 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3626 "%s(GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
3627 " is invalid for depth+stencil attachment)", caller
);
3630 /* the depth and stencil attachments must point to the same buffer */
3631 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
3632 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
3633 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
3634 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3635 "%s(DEPTH/STENCIL attachments differ)", caller
);
3640 /* No need to flush here */
3643 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
3644 /* From the OpenGL spec, 9.2. Binding and Managing Framebuffer Objects:
3646 * "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then
3647 * either no framebuffer is bound to target; or the default framebuffer
3648 * is bound, attachment is DEPTH or STENCIL, and the number of depth or
3649 * stencil bits, respectively, is zero."
3651 *params
= (_mesa_is_winsys_fbo(buffer
) &&
3652 ((attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) ||
3653 (att
->Type
!= GL_NONE
)))
3654 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
3656 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
3657 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
3658 *params
= att
->Renderbuffer
->Name
;
3660 else if (att
->Type
== GL_TEXTURE
) {
3661 *params
= att
->Texture
->Name
;
3664 assert(att
->Type
== GL_NONE
);
3665 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
3668 goto invalid_pname_enum
;
3672 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
3673 if (att
->Type
== GL_TEXTURE
) {
3674 *params
= att
->TextureLevel
;
3676 else if (att
->Type
== GL_NONE
) {
3677 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3678 _mesa_enum_to_string(pname
));
3681 goto invalid_pname_enum
;
3684 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
3685 if (att
->Type
== GL_TEXTURE
) {
3686 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
3687 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
3693 else if (att
->Type
== GL_NONE
) {
3694 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3695 _mesa_enum_to_string(pname
));
3698 goto invalid_pname_enum
;
3701 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
3702 if (ctx
->API
== API_OPENGLES
) {
3703 goto invalid_pname_enum
;
3704 } else if (att
->Type
== GL_NONE
) {
3705 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3706 _mesa_enum_to_string(pname
));
3707 } else if (att
->Type
== GL_TEXTURE
) {
3708 if (att
->Texture
&& (att
->Texture
->Target
== GL_TEXTURE_3D
||
3709 att
->Texture
->Target
== GL_TEXTURE_2D_ARRAY
)) {
3710 *params
= att
->Zoffset
;
3717 goto invalid_pname_enum
;
3720 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
3721 if ((!_mesa_is_desktop_gl(ctx
) ||
3722 !ctx
->Extensions
.ARB_framebuffer_object
)
3723 && !_mesa_is_gles3(ctx
)) {
3724 goto invalid_pname_enum
;
3726 else if (att
->Type
== GL_NONE
) {
3727 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3728 _mesa_enum_to_string(pname
));
3731 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
3733 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
3736 /* According to ARB_framebuffer_sRGB, we should return LINEAR
3737 * if the sRGB conversion is unsupported. */
3738 *params
= GL_LINEAR
;
3742 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
3743 if ((ctx
->API
!= API_OPENGL_COMPAT
||
3744 !ctx
->Extensions
.ARB_framebuffer_object
)
3745 && ctx
->API
!= API_OPENGL_CORE
3746 && !_mesa_is_gles3(ctx
)) {
3747 goto invalid_pname_enum
;
3749 else if (att
->Type
== GL_NONE
) {
3750 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3751 _mesa_enum_to_string(pname
));
3754 mesa_format format
= att
->Renderbuffer
->Format
;
3756 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
3759 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
3760 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
3761 * generate an INVALID_OPERATION error.
3763 if (_mesa_is_gles3(ctx
) &&
3764 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3765 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3767 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
3768 "GL_DEPTH_STENCIL_ATTACHMENT)", caller
);
3772 if (format
== MESA_FORMAT_S_UINT8
) {
3776 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
3777 /* depends on the attachment parameter */
3778 if (attachment
== GL_STENCIL_ATTACHMENT
) {
3786 *params
= _mesa_get_format_datatype(format
);
3790 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
3791 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
3792 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
3793 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
3794 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
3795 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
3796 if ((!_mesa_is_desktop_gl(ctx
) ||
3797 !ctx
->Extensions
.ARB_framebuffer_object
)
3798 && !_mesa_is_gles3(ctx
)) {
3799 goto invalid_pname_enum
;
3801 else if (att
->Type
== GL_NONE
) {
3802 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3803 _mesa_enum_to_string(pname
));
3805 else if (att
->Texture
) {
3806 const struct gl_texture_image
*texImage
=
3807 _mesa_select_tex_image(att
->Texture
, att
->Texture
->Target
,
3810 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
3811 texImage
->TexFormat
);
3817 else if (att
->Renderbuffer
) {
3818 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
3819 att
->Renderbuffer
->Format
);
3822 _mesa_problem(ctx
, "%s: invalid FBO attachment structure", caller
);
3825 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
3826 if (!_mesa_has_geometry_shaders(ctx
)) {
3827 goto invalid_pname_enum
;
3828 } else if (att
->Type
== GL_TEXTURE
) {
3829 *params
= att
->Layered
;
3830 } else if (att
->Type
== GL_NONE
) {
3831 _mesa_error(ctx
, err
, "%s(invalid pname %s)", caller
,
3832 _mesa_enum_to_string(pname
));
3834 goto invalid_pname_enum
;
3838 goto invalid_pname_enum
;
3844 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname %s)", caller
,
3845 _mesa_enum_to_string(pname
));
3851 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
3852 GLenum pname
, GLint
*params
)
3854 GET_CURRENT_CONTEXT(ctx
);
3855 struct gl_framebuffer
*buffer
;
3857 buffer
= get_framebuffer_target(ctx
, target
);
3859 _mesa_error(ctx
, GL_INVALID_ENUM
,
3860 "glGetFramebufferAttachmentParameteriv(invalid target %s)",
3861 _mesa_enum_to_string(target
));
3865 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3867 "glGetFramebufferAttachmentParameteriv");
3872 _mesa_GetNamedFramebufferAttachmentParameteriv(GLuint framebuffer
,
3874 GLenum pname
, GLint
*params
)
3876 GET_CURRENT_CONTEXT(ctx
);
3877 struct gl_framebuffer
*buffer
;
3880 buffer
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3881 "glGetNamedFramebufferAttachmentParameteriv");
3887 * Section 9.2 Binding and Managing Framebuffer Objects of the OpenGL
3888 * 4.5 core spec (30.10.2014, PDF page 314):
3889 * "If framebuffer is zero, then the default draw framebuffer is
3892 buffer
= ctx
->WinSysDrawBuffer
;
3895 _mesa_get_framebuffer_attachment_parameter(ctx
, buffer
, attachment
, pname
,
3897 "glGetNamedFramebufferAttachmentParameteriv");
3902 _mesa_NamedFramebufferParameteri(GLuint framebuffer
, GLenum pname
,
3905 GET_CURRENT_CONTEXT(ctx
);
3906 struct gl_framebuffer
*fb
= NULL
;
3908 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3909 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3910 "glNamedFramebufferParameteri("
3911 "ARB_framebuffer_no_attachments not implemented)");
3915 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3916 "glNamedFramebufferParameteri");
3919 framebuffer_parameteri(ctx
, fb
, pname
, param
,
3920 "glNamedFramebufferParameteriv");
3926 _mesa_GetNamedFramebufferParameteriv(GLuint framebuffer
, GLenum pname
,
3929 GET_CURRENT_CONTEXT(ctx
);
3930 struct gl_framebuffer
*fb
;
3932 if (!ctx
->Extensions
.ARB_framebuffer_no_attachments
) {
3933 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3934 "glNamedFramebufferParameteriv("
3935 "ARB_framebuffer_no_attachments not implemented)");
3940 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
3941 "glGetNamedFramebufferParameteriv");
3943 fb
= ctx
->WinSysDrawBuffer
;
3947 get_framebuffer_parameteriv(ctx
, fb
, pname
, param
,
3948 "glGetNamedFramebufferParameteriv");
3954 invalidate_framebuffer_storage(struct gl_context
*ctx
,
3955 struct gl_framebuffer
*fb
,
3956 GLsizei numAttachments
,
3957 const GLenum
*attachments
, GLint x
, GLint y
,
3958 GLsizei width
, GLsizei height
, const char *name
)
3962 /* Section 17.4 Whole Framebuffer Operations of the OpenGL 4.5 Core
3963 * Spec (2.2.2015, PDF page 522) says:
3964 * "An INVALID_VALUE error is generated if numAttachments, width, or
3965 * height is negative."
3967 if (numAttachments
< 0) {
3968 _mesa_error(ctx
, GL_INVALID_VALUE
,
3969 "%s(numAttachments < 0)", name
);
3974 _mesa_error(ctx
, GL_INVALID_VALUE
,
3975 "%s(width < 0)", name
);
3980 _mesa_error(ctx
, GL_INVALID_VALUE
,
3981 "%s(height < 0)", name
);
3985 /* The GL_ARB_invalidate_subdata spec says:
3987 * "If an attachment is specified that does not exist in the
3988 * framebuffer bound to <target>, it is ignored."
3992 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3993 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3994 * INVALID_OPERATION is generated."
3996 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3997 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3998 * set of retrictions).
4000 for (i
= 0; i
< numAttachments
; i
++) {
4001 if (_mesa_is_winsys_fbo(fb
)) {
4002 switch (attachments
[i
]) {
4008 /* Accumulation buffers and auxilary buffers were removed in
4009 * OpenGL 3.1, and they never existed in OpenGL ES.
4011 if (ctx
->API
!= API_OPENGL_COMPAT
)
4021 case GL_FRONT_RIGHT
:
4022 if (!_mesa_is_desktop_gl(ctx
))
4029 switch (attachments
[i
]) {
4030 case GL_DEPTH_ATTACHMENT
:
4031 case GL_STENCIL_ATTACHMENT
:
4033 case GL_DEPTH_STENCIL_ATTACHMENT
:
4034 /* GL_DEPTH_STENCIL_ATTACHMENT is a valid attachment point only
4035 * in desktop and ES 3.0 profiles. Note that OES_packed_depth_stencil
4036 * extension does not make this attachment point valid on ES 2.0.
4038 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
))
4041 case GL_COLOR_ATTACHMENT0
:
4042 case GL_COLOR_ATTACHMENT1
:
4043 case GL_COLOR_ATTACHMENT2
:
4044 case GL_COLOR_ATTACHMENT3
:
4045 case GL_COLOR_ATTACHMENT4
:
4046 case GL_COLOR_ATTACHMENT5
:
4047 case GL_COLOR_ATTACHMENT6
:
4048 case GL_COLOR_ATTACHMENT7
:
4049 case GL_COLOR_ATTACHMENT8
:
4050 case GL_COLOR_ATTACHMENT9
:
4051 case GL_COLOR_ATTACHMENT10
:
4052 case GL_COLOR_ATTACHMENT11
:
4053 case GL_COLOR_ATTACHMENT12
:
4054 case GL_COLOR_ATTACHMENT13
:
4055 case GL_COLOR_ATTACHMENT14
:
4056 case GL_COLOR_ATTACHMENT15
: {
4057 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
4058 if (k
>= ctx
->Const
.MaxColorAttachments
) {
4059 _mesa_error(ctx
, GL_INVALID_OPERATION
,
4060 "%s(attachment >= max. color attachments)", name
);
4071 /* We don't actually do anything for this yet. Just return after
4072 * validating the parameters and generating the required errors.
4077 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid attachment %s)", name
,
4078 _mesa_enum_to_string(attachments
[i
]));
4084 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
4085 const GLenum
*attachments
, GLint x
, GLint y
,
4086 GLsizei width
, GLsizei height
)
4088 struct gl_framebuffer
*fb
;
4089 GET_CURRENT_CONTEXT(ctx
);
4091 fb
= get_framebuffer_target(ctx
, target
);
4093 _mesa_error(ctx
, GL_INVALID_ENUM
,
4094 "glInvalidateSubFramebuffer(invalid target %s)",
4095 _mesa_enum_to_string(target
));
4099 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4100 x
, y
, width
, height
,
4101 "glInvalidateSubFramebuffer");
4106 _mesa_InvalidateNamedFramebufferSubData(GLuint framebuffer
,
4107 GLsizei numAttachments
,
4108 const GLenum
*attachments
,
4110 GLsizei width
, GLsizei height
)
4112 struct gl_framebuffer
*fb
;
4113 GET_CURRENT_CONTEXT(ctx
);
4115 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4116 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4117 * default draw framebuffer is affected."
4120 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4121 "glInvalidateNamedFramebufferSubData");
4126 fb
= ctx
->WinSysDrawBuffer
;
4128 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4129 x
, y
, width
, height
,
4130 "glInvalidateNamedFramebufferSubData");
4135 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
4136 const GLenum
*attachments
)
4138 struct gl_framebuffer
*fb
;
4139 GET_CURRENT_CONTEXT(ctx
);
4141 fb
= get_framebuffer_target(ctx
, target
);
4143 _mesa_error(ctx
, GL_INVALID_ENUM
,
4144 "glInvalidateFramebuffer(invalid target %s)",
4145 _mesa_enum_to_string(target
));
4149 /* The GL_ARB_invalidate_subdata spec says:
4153 * void InvalidateFramebuffer(enum target,
4154 * sizei numAttachments,
4155 * const enum *attachments);
4157 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4158 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4159 * <MAX_VIEWPORT_DIMS[1]> respectively."
4161 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4163 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
4164 "glInvalidateFramebuffer");
4169 _mesa_InvalidateNamedFramebufferData(GLuint framebuffer
,
4170 GLsizei numAttachments
,
4171 const GLenum
*attachments
)
4173 struct gl_framebuffer
*fb
;
4174 GET_CURRENT_CONTEXT(ctx
);
4176 /* The OpenGL 4.5 core spec (02.02.2015) says (in Section 17.4 Whole
4177 * Framebuffer Operations, PDF page 522): "If framebuffer is zero, the
4178 * default draw framebuffer is affected."
4181 fb
= _mesa_lookup_framebuffer_err(ctx
, framebuffer
,
4182 "glInvalidateNamedFramebufferData");
4187 fb
= ctx
->WinSysDrawBuffer
;
4189 /* The GL_ARB_invalidate_subdata spec says:
4193 * void InvalidateFramebuffer(enum target,
4194 * sizei numAttachments,
4195 * const enum *attachments);
4197 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
4198 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
4199 * <MAX_VIEWPORT_DIMS[1]> respectively."
4201 invalidate_framebuffer_storage(ctx
, fb
, numAttachments
, attachments
,
4203 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
4204 "glInvalidateNamedFramebufferData");
4209 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
4210 const GLenum
*attachments
)
4212 struct gl_framebuffer
*fb
;
4215 GET_CURRENT_CONTEXT(ctx
);
4217 fb
= get_framebuffer_target(ctx
, target
);
4219 _mesa_error(ctx
, GL_INVALID_ENUM
,
4220 "glDiscardFramebufferEXT(target %s)",
4221 _mesa_enum_to_string(target
));
4225 if (numAttachments
< 0) {
4226 _mesa_error(ctx
, GL_INVALID_VALUE
,
4227 "glDiscardFramebufferEXT(numAttachments < 0)");
4231 for (i
= 0; i
< numAttachments
; i
++) {
4232 switch (attachments
[i
]) {
4236 if (_mesa_is_user_fbo(fb
))
4239 case GL_COLOR_ATTACHMENT0
:
4240 case GL_DEPTH_ATTACHMENT
:
4241 case GL_STENCIL_ATTACHMENT
:
4242 if (_mesa_is_winsys_fbo(fb
))
4250 if (ctx
->Driver
.DiscardFramebuffer
)
4251 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
4256 _mesa_error(ctx
, GL_INVALID_ENUM
,
4257 "glDiscardFramebufferEXT(attachment %s)",
4258 _mesa_enum_to_string(attachments
[i
]));