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"
53 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
60 * None of the GL_EXT_framebuffer_object functions are compiled into
67 * When glGenRender/FramebuffersEXT() is called we insert pointers to
68 * these placeholder objects into the hash table.
69 * Later, when the object ID is first bound, we replace the placeholder
70 * with the real frame/renderbuffer.
72 static struct gl_framebuffer DummyFramebuffer
;
73 static struct gl_renderbuffer DummyRenderbuffer
;
75 /* We bind this framebuffer when applications pass a NULL
76 * drawable/surface in make current. */
77 static struct gl_framebuffer IncompleteFramebuffer
;
81 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
87 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
94 _mesa_init_fbobjects(struct gl_context
*ctx
)
96 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
97 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
98 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
99 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
101 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
104 struct gl_framebuffer
*
105 _mesa_get_incomplete_framebuffer(void)
107 return &IncompleteFramebuffer
;
111 * Helper routine for getting a gl_renderbuffer.
113 struct gl_renderbuffer
*
114 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
116 struct gl_renderbuffer
*rb
;
121 rb
= (struct gl_renderbuffer
*)
122 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
128 * Helper routine for getting a gl_framebuffer.
130 struct gl_framebuffer
*
131 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
133 struct gl_framebuffer
*fb
;
138 fb
= (struct gl_framebuffer
*)
139 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
145 * Mark the given framebuffer as invalid. This will force the
146 * test for framebuffer completeness to be done before the framebuffer
150 invalidate_framebuffer(struct gl_framebuffer
*fb
)
152 fb
->_Status
= 0; /* "indeterminate" */
157 * Return the gl_framebuffer object which corresponds to the given
158 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
159 * Check support for GL_EXT_framebuffer_blit to determine if certain
161 * \return gl_framebuffer pointer or NULL if target is illegal
163 static struct gl_framebuffer
*
164 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
166 bool have_fb_blit
= _mesa_is_gles3(ctx
) ||
167 (ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
));
169 case GL_DRAW_FRAMEBUFFER
:
170 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
171 case GL_READ_FRAMEBUFFER
:
172 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
173 case GL_FRAMEBUFFER_EXT
:
174 return ctx
->DrawBuffer
;
182 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
183 * gl_renderbuffer_attachment object.
184 * This function is only used for user-created FB objects, not the
185 * default / window-system FB object.
186 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
187 * the depth buffer attachment point.
189 struct gl_renderbuffer_attachment
*
190 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
195 assert(_mesa_is_user_fbo(fb
));
197 switch (attachment
) {
198 case GL_COLOR_ATTACHMENT0_EXT
:
199 case GL_COLOR_ATTACHMENT1_EXT
:
200 case GL_COLOR_ATTACHMENT2_EXT
:
201 case GL_COLOR_ATTACHMENT3_EXT
:
202 case GL_COLOR_ATTACHMENT4_EXT
:
203 case GL_COLOR_ATTACHMENT5_EXT
:
204 case GL_COLOR_ATTACHMENT6_EXT
:
205 case GL_COLOR_ATTACHMENT7_EXT
:
206 case GL_COLOR_ATTACHMENT8_EXT
:
207 case GL_COLOR_ATTACHMENT9_EXT
:
208 case GL_COLOR_ATTACHMENT10_EXT
:
209 case GL_COLOR_ATTACHMENT11_EXT
:
210 case GL_COLOR_ATTACHMENT12_EXT
:
211 case GL_COLOR_ATTACHMENT13_EXT
:
212 case GL_COLOR_ATTACHMENT14_EXT
:
213 case GL_COLOR_ATTACHMENT15_EXT
:
214 /* Only OpenGL ES 1.x forbids color attachments other than
215 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
218 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
219 if (i
>= ctx
->Const
.MaxColorAttachments
220 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
223 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
224 case GL_DEPTH_STENCIL_ATTACHMENT
:
225 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
228 case GL_DEPTH_ATTACHMENT_EXT
:
229 return &fb
->Attachment
[BUFFER_DEPTH
];
230 case GL_STENCIL_ATTACHMENT_EXT
:
231 return &fb
->Attachment
[BUFFER_STENCIL
];
239 * As above, but only used for getting attachments of the default /
240 * window-system framebuffer (not user-created framebuffer objects).
242 static struct gl_renderbuffer_attachment
*
243 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
246 assert(_mesa_is_winsys_fbo(fb
));
248 if (_mesa_is_gles3(ctx
)) {
249 assert(attachment
== GL_BACK
||
250 attachment
== GL_DEPTH
||
251 attachment
== GL_STENCIL
);
252 switch (attachment
) {
254 /* Since there is no stereo rendering in ES 3.0, only return the
257 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
258 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
259 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
261 return &fb
->Attachment
[BUFFER_DEPTH
];
263 return &fb
->Attachment
[BUFFER_STENCIL
];
267 switch (attachment
) {
269 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
271 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
273 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
275 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
277 if (fb
->Visual
.numAuxBuffers
== 1) {
278 return &fb
->Attachment
[BUFFER_AUX0
];
282 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
284 * "If the default framebuffer is bound to target, then attachment must
285 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
286 * identifying a color buffer; DEPTH, identifying the depth buffer; or
287 * STENCIL, identifying the stencil buffer."
289 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
290 * language. However, revision #33 of the ARB_framebuffer_object spec
293 * "If the default framebuffer is bound to <target>, then <attachment>
294 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
295 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
296 * depth buffer, or the stencil buffer, and <pname> may be
297 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
298 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
300 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
301 * from glext.h, so shipping apps should not use those values.
303 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
304 * support queries of the window system FBO.
307 return &fb
->Attachment
[BUFFER_DEPTH
];
309 return &fb
->Attachment
[BUFFER_STENCIL
];
318 * Remove any texture or renderbuffer attached to the given attachment
319 * point. Update reference counts, etc.
322 _mesa_remove_attachment(struct gl_context
*ctx
,
323 struct gl_renderbuffer_attachment
*att
)
325 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
327 /* tell driver that we're done rendering to this texture. */
328 if (rb
&& rb
->NeedsFinishRenderTexture
)
329 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
331 if (att
->Type
== GL_TEXTURE
) {
332 ASSERT(att
->Texture
);
333 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
334 ASSERT(!att
->Texture
);
336 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
337 ASSERT(!att
->Texture
);
338 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
339 ASSERT(!att
->Renderbuffer
);
342 att
->Complete
= GL_TRUE
;
346 * Create a renderbuffer which will be set up by the driver to wrap the
347 * texture image slice.
349 * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get
350 * to share most of their framebuffer rendering code between winsys,
351 * renderbuffer, and texture attachments.
353 * The allocated renderbuffer uses a non-zero Name so that drivers can check
354 * it for determining vertical orientation, but we use ~0 to make it fairly
355 * unambiguous with actual user (non-texture) renderbuffers.
358 _mesa_update_texture_renderbuffer(struct gl_context
*ctx
,
359 struct gl_framebuffer
*fb
,
360 struct gl_renderbuffer_attachment
*att
)
362 struct gl_texture_image
*texImage
;
363 struct gl_renderbuffer
*rb
;
365 texImage
= att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
369 rb
= att
->Renderbuffer
;
371 rb
= ctx
->Driver
.NewRenderbuffer(ctx
, ~0);
373 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
376 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
378 /* This can't get called on a texture renderbuffer, so set it to NULL
379 * for clarity compared to user renderbuffers.
381 rb
->AllocStorage
= NULL
;
383 rb
->NeedsFinishRenderTexture
= ctx
->Driver
.FinishRenderTexture
!= NULL
;
386 rb
->_BaseFormat
= texImage
->_BaseFormat
;
387 rb
->Format
= texImage
->TexFormat
;
388 rb
->InternalFormat
= texImage
->InternalFormat
;
389 rb
->Width
= texImage
->Width2
;
390 rb
->Height
= texImage
->Height2
;
391 rb
->NumSamples
= texImage
->NumSamples
;
392 rb
->TexImage
= texImage
;
394 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
398 * Bind a texture object to an attachment point.
399 * The previous binding, if any, will be removed first.
402 _mesa_set_texture_attachment(struct gl_context
*ctx
,
403 struct gl_framebuffer
*fb
,
404 struct gl_renderbuffer_attachment
*att
,
405 struct gl_texture_object
*texObj
,
406 GLenum texTarget
, GLuint level
, GLuint zoffset
,
409 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
411 if (rb
&& rb
->NeedsFinishRenderTexture
)
412 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
414 if (att
->Texture
== texObj
) {
415 /* re-attaching same texture */
416 ASSERT(att
->Type
== GL_TEXTURE
);
420 _mesa_remove_attachment(ctx
, att
);
421 att
->Type
= GL_TEXTURE
;
422 assert(!att
->Texture
);
423 _mesa_reference_texobj(&att
->Texture
, texObj
);
425 invalidate_framebuffer(fb
);
427 /* always update these fields */
428 att
->TextureLevel
= level
;
429 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
430 att
->Zoffset
= zoffset
;
431 att
->Layered
= layered
;
432 att
->Complete
= GL_FALSE
;
434 _mesa_update_texture_renderbuffer(ctx
, fb
, att
);
439 * Bind a renderbuffer to an attachment point.
440 * The previous binding, if any, will be removed first.
443 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
444 struct gl_renderbuffer_attachment
*att
,
445 struct gl_renderbuffer
*rb
)
447 /* XXX check if re-doing same attachment, exit early */
448 _mesa_remove_attachment(ctx
, att
);
449 att
->Type
= GL_RENDERBUFFER_EXT
;
450 att
->Texture
= NULL
; /* just to be safe */
451 att
->Complete
= GL_FALSE
;
452 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
457 * Fallback for ctx->Driver.FramebufferRenderbuffer()
458 * Attach a renderbuffer object to a framebuffer object.
461 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
462 struct gl_framebuffer
*fb
,
463 GLenum attachment
, struct gl_renderbuffer
*rb
)
465 struct gl_renderbuffer_attachment
*att
;
467 _glthread_LOCK_MUTEX(fb
->Mutex
);
469 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
472 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
473 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
474 /* do stencil attachment here (depth already done above) */
475 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
477 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
479 rb
->AttachedAnytime
= GL_TRUE
;
482 _mesa_remove_attachment(ctx
, att
);
485 invalidate_framebuffer(fb
);
487 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
492 * Fallback for ctx->Driver.ValidateFramebuffer()
493 * Check if the renderbuffer's formats are supported by the software
495 * Drivers should probably override this.
498 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
501 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
502 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
504 switch (rb
->_BaseFormat
) {
506 case GL_LUMINANCE_ALPHA
:
511 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
515 switch (rb
->Format
) {
516 /* XXX This list is likely incomplete. */
517 case MESA_FORMAT_RGB9_E5_FLOAT
:
518 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
521 /* render buffer format is supported by software rendering */
530 * Return true if the framebuffer has a combined depth/stencil
531 * renderbuffer attached.
534 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
536 const struct gl_renderbuffer_attachment
*depth
=
537 &fb
->Attachment
[BUFFER_DEPTH
];
538 const struct gl_renderbuffer_attachment
*stencil
=
539 &fb
->Attachment
[BUFFER_STENCIL
];
541 if (depth
->Type
== stencil
->Type
) {
542 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
543 depth
->Renderbuffer
== stencil
->Renderbuffer
)
546 if (depth
->Type
== GL_TEXTURE
&&
547 depth
->Texture
== stencil
->Texture
)
559 att_incomplete(const char *msg
)
561 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
562 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
571 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
573 static GLuint msg_id
;
575 _mesa_gl_debug(ctx
, &msg_id
,
576 MESA_DEBUG_TYPE_OTHER
,
577 MESA_DEBUG_SEVERITY_MEDIUM
,
578 "FBO incomplete: %s [%d]\n", msg
, index
);
580 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
581 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
587 * Is the given base format a legal format for a color renderbuffer?
590 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
592 switch (baseFormat
) {
597 case GL_LUMINANCE_ALPHA
:
600 return ctx
->API
== API_OPENGL_COMPAT
&&
601 ctx
->Extensions
.ARB_framebuffer_object
;
604 return ctx
->Extensions
.ARB_texture_rg
;
612 * Is the given base format a legal format for a color renderbuffer?
615 is_format_color_renderable(const struct gl_context
*ctx
, gl_format format
, GLenum internalFormat
)
617 const GLenum baseFormat
=
618 _mesa_get_format_base_format(format
);
621 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
622 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
626 /* Reject additional cases for GLES */
627 switch (internalFormat
) {
647 if (format
== MESA_FORMAT_ARGB2101010
&& internalFormat
!= GL_RGB10_A2
) {
656 * Is the given base format a legal format for a depth/stencil renderbuffer?
659 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
661 switch (baseFormat
) {
662 case GL_DEPTH_COMPONENT
:
663 case GL_DEPTH_STENCIL_EXT
:
672 * Test if an attachment point is complete and update its Complete field.
673 * \param format if GL_COLOR, this is a color attachment point,
674 * if GL_DEPTH, this is a depth component attachment point,
675 * if GL_STENCIL, this is a stencil component attachment point.
678 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
679 struct gl_renderbuffer_attachment
*att
)
681 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
683 /* assume complete */
684 att
->Complete
= GL_TRUE
;
686 /* Look for reasons why the attachment might be incomplete */
687 if (att
->Type
== GL_TEXTURE
) {
688 const struct gl_texture_object
*texObj
= att
->Texture
;
689 struct gl_texture_image
*texImage
;
693 att_incomplete("no texobj");
694 att
->Complete
= GL_FALSE
;
698 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
700 att_incomplete("no teximage");
701 att
->Complete
= GL_FALSE
;
704 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
705 att_incomplete("teximage width/height=0");
706 att
->Complete
= GL_FALSE
;
709 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
710 att_incomplete("bad z offset");
711 att
->Complete
= GL_FALSE
;
715 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
717 if (format
== GL_COLOR
) {
718 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
719 att_incomplete("bad format");
720 att
->Complete
= GL_FALSE
;
723 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
724 att_incomplete("compressed internalformat");
725 att
->Complete
= GL_FALSE
;
729 else if (format
== GL_DEPTH
) {
730 if (baseFormat
== GL_DEPTH_COMPONENT
) {
733 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
734 ctx
->Extensions
.ARB_depth_texture
&&
735 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
739 att
->Complete
= GL_FALSE
;
740 att_incomplete("bad depth format");
745 ASSERT(format
== GL_STENCIL
);
746 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
747 ctx
->Extensions
.ARB_depth_texture
&&
748 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
752 /* no such thing as stencil-only textures */
753 att_incomplete("illegal stencil texture");
754 att
->Complete
= GL_FALSE
;
759 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
760 const GLenum baseFormat
=
761 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
763 ASSERT(att
->Renderbuffer
);
764 if (!att
->Renderbuffer
->InternalFormat
||
765 att
->Renderbuffer
->Width
< 1 ||
766 att
->Renderbuffer
->Height
< 1) {
767 att_incomplete("0x0 renderbuffer");
768 att
->Complete
= GL_FALSE
;
771 if (format
== GL_COLOR
) {
772 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
773 att_incomplete("bad renderbuffer color format");
774 att
->Complete
= GL_FALSE
;
778 else if (format
== GL_DEPTH
) {
779 if (baseFormat
== GL_DEPTH_COMPONENT
) {
782 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
783 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
787 att_incomplete("bad renderbuffer depth format");
788 att
->Complete
= GL_FALSE
;
793 assert(format
== GL_STENCIL
);
794 if (baseFormat
== GL_STENCIL_INDEX
) {
797 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
798 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
802 att
->Complete
= GL_FALSE
;
803 att_incomplete("bad renderbuffer stencil format");
809 ASSERT(att
->Type
== GL_NONE
);
817 * Test if the given framebuffer object is complete and update its
818 * Status field with the results.
819 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
820 * driver to make hardware-specific validation/completeness checks.
821 * Also update the framebuffer's Width and Height fields if the
822 * framebuffer is complete.
825 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
826 struct gl_framebuffer
*fb
)
829 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
830 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
831 GLint numSamples
= -1;
832 GLint fixedSampleLocations
= -1;
835 bool layer_count_valid
= false;
836 GLuint layer_count
= 0, att_layer_count
;
838 assert(_mesa_is_user_fbo(fb
));
840 /* we're changing framebuffer fields here */
841 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
846 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
847 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
849 /* Start at -2 to more easily loop over all attachment points.
854 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
855 struct gl_renderbuffer_attachment
*att
;
860 * XXX for ARB_fbo, only check color buffers that are named by
861 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
864 /* check for attachment completeness
867 att
= &fb
->Attachment
[BUFFER_DEPTH
];
868 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
869 if (!att
->Complete
) {
870 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
871 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
876 att
= &fb
->Attachment
[BUFFER_STENCIL
];
877 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
878 if (!att
->Complete
) {
879 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
880 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
885 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
886 test_attachment_completeness(ctx
, GL_COLOR
, att
);
887 if (!att
->Complete
) {
888 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
889 fbo_incomplete(ctx
, "color attachment incomplete", i
);
894 /* get width, height, format of the renderbuffer/texture
896 if (att
->Type
== GL_TEXTURE
) {
897 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
898 minWidth
= MIN2(minWidth
, texImg
->Width
);
899 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
900 minHeight
= MIN2(minHeight
, texImg
->Height
);
901 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
902 f
= texImg
->_BaseFormat
;
903 attFormat
= texImg
->TexFormat
;
906 if (!is_format_color_renderable(ctx
, attFormat
, texImg
->InternalFormat
) &&
907 !is_legal_depth_format(ctx
, f
)) {
908 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
909 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
914 numSamples
= texImg
->NumSamples
;
915 else if (numSamples
!= texImg
->NumSamples
) {
916 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
917 fbo_incomplete(ctx
, "inconsistent sample count", -1);
921 if (fixedSampleLocations
< 0)
922 fixedSampleLocations
= texImg
->FixedSampleLocations
;
923 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
924 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
925 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
929 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
930 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
931 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
932 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
933 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
934 f
= att
->Renderbuffer
->InternalFormat
;
935 attFormat
= att
->Renderbuffer
->Format
;
939 numSamples
= att
->Renderbuffer
->NumSamples
;
940 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
941 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
942 fbo_incomplete(ctx
, "inconsistent sample count", -1);
946 /* RENDERBUFFER has fixedSampleLocations implicitly true */
947 if (fixedSampleLocations
< 0)
948 fixedSampleLocations
= GL_TRUE
;
949 else if (fixedSampleLocations
!= GL_TRUE
) {
950 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
951 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
956 assert(att
->Type
== GL_NONE
);
960 /* check if integer color */
961 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
963 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
965 GLenum type
= _mesa_get_format_datatype(attFormat
);
967 fb
->_AllColorBuffersFixedPoint
=
968 fb
->_AllColorBuffersFixedPoint
&&
969 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
971 fb
->_HasSNormOrFloatColorBuffer
=
972 fb
->_HasSNormOrFloatColorBuffer
||
973 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
976 /* Error-check width, height, format */
977 if (numImages
== 1) {
984 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
985 /* check that width, height, format are same */
986 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
987 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
988 fbo_incomplete(ctx
, "width or height mismatch", -1);
991 /* check that all color buffers are the same format */
992 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
993 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
994 fbo_incomplete(ctx
, "format mismatch", -1);
1000 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1002 if (att
->Type
== GL_RENDERBUFFER
&&
1003 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1004 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1005 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1009 /* Check that layered rendering is consistent. */
1010 att_layer_count
= att
->Layered
? att
->Renderbuffer
->Depth
: 0;
1011 if (!layer_count_valid
) {
1012 layer_count
= att_layer_count
;
1013 layer_count_valid
= true;
1014 } else if (layer_count
!= att_layer_count
) {
1015 if (layer_count
== 0 || att_layer_count
== 0) {
1016 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1017 fbo_incomplete(ctx
, "framebuffer attachment layer mode is inconsistent", i
);
1019 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_ARB
;
1020 fbo_incomplete(ctx
, "framebuffer attachment layer count is inconsistent", i
);
1026 fb
->Layered
= layer_count
> 0;
1028 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1029 /* Check that all DrawBuffers are present */
1030 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1031 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1032 const struct gl_renderbuffer_attachment
*att
1033 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1035 if (att
->Type
== GL_NONE
) {
1036 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1037 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1043 /* Check that the ReadBuffer is present */
1044 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1045 const struct gl_renderbuffer_attachment
*att
1046 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1048 if (att
->Type
== GL_NONE
) {
1049 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1050 fbo_incomplete(ctx
, "missing readbuffer", -1);
1056 if (numImages
== 0) {
1057 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1058 fbo_incomplete(ctx
, "no attachments", -1);
1062 /* Provisionally set status = COMPLETE ... */
1063 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1065 /* ... but the driver may say the FB is incomplete.
1066 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1069 if (ctx
->Driver
.ValidateFramebuffer
) {
1070 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1071 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1072 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1076 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1078 * Note that if ARB_framebuffer_object is supported and the attached
1079 * renderbuffers/textures are different sizes, the framebuffer
1080 * width/height will be set to the smallest width/height.
1082 fb
->Width
= minWidth
;
1083 fb
->Height
= minHeight
;
1085 /* finally, update the visual info for the framebuffer */
1086 _mesa_update_framebuffer_visual(ctx
, fb
);
1091 GLboolean GLAPIENTRY
1092 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1094 GET_CURRENT_CONTEXT(ctx
);
1095 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1097 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1098 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1106 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1108 struct gl_renderbuffer
*newRb
;
1109 GET_CURRENT_CONTEXT(ctx
);
1111 if (target
!= GL_RENDERBUFFER_EXT
) {
1112 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1116 /* No need to flush here since the render buffer binding has no
1117 * effect on rendering state.
1121 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1122 if (newRb
== &DummyRenderbuffer
) {
1123 /* ID was reserved, but no real renderbuffer object made yet */
1126 else if (!newRb
&& !allow_user_names
) {
1127 /* All RB IDs must be Gen'd */
1128 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1133 /* create new renderbuffer object */
1134 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1136 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1139 ASSERT(newRb
->AllocStorage
);
1140 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1141 newRb
->RefCount
= 1; /* referenced by hash table */
1148 ASSERT(newRb
!= &DummyRenderbuffer
);
1150 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1154 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1156 GET_CURRENT_CONTEXT(ctx
);
1158 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1159 * entry point, but they allow the use of user-generated names.
1161 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1165 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1167 /* This function should not be in the dispatch table for core profile /
1168 * OpenGL 3.1, so execution should never get here in those cases -- no
1169 * need for an explicit test.
1171 bind_renderbuffer(target
, renderbuffer
, true);
1176 * If the given renderbuffer is anywhere attached to the framebuffer, detach
1178 * This is used when a renderbuffer object is deleted.
1179 * The spec calls for unbinding.
1182 detach_renderbuffer(struct gl_context
*ctx
,
1183 struct gl_framebuffer
*fb
,
1184 struct gl_renderbuffer
*rb
)
1187 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1188 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
1189 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
1192 invalidate_framebuffer(fb
);
1197 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1200 GET_CURRENT_CONTEXT(ctx
);
1202 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1204 for (i
= 0; i
< n
; i
++) {
1205 if (renderbuffers
[i
] > 0) {
1206 struct gl_renderbuffer
*rb
;
1207 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1209 /* check if deleting currently bound renderbuffer object */
1210 if (rb
== ctx
->CurrentRenderbuffer
) {
1212 ASSERT(rb
->RefCount
>= 2);
1213 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1216 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1217 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1219 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1220 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1221 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1224 /* Remove from hash table immediately, to free the ID.
1225 * But the object will not be freed until it's no longer
1226 * referenced anywhere else.
1228 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1230 if (rb
!= &DummyRenderbuffer
) {
1231 /* no longer referenced by hash table */
1232 _mesa_reference_renderbuffer(&rb
, NULL
);
1241 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1243 GET_CURRENT_CONTEXT(ctx
);
1248 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1255 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1257 for (i
= 0; i
< n
; i
++) {
1258 GLuint name
= first
+ i
;
1259 renderbuffers
[i
] = name
;
1260 /* insert dummy placeholder into hash table */
1261 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1262 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1263 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1269 * Given an internal format token for a render buffer, return the
1270 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1271 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1272 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1274 * This is similar to _mesa_base_tex_format() but the set of valid
1275 * internal formats is different.
1277 * Note that even if a format is determined to be legal here, validation
1278 * of the FBO may fail if the format is not supported by the driver/GPU.
1280 * \param internalFormat as passed to glRenderbufferStorage()
1281 * \return the base internal format, or 0 if internalFormat is illegal
1284 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1287 * Notes: some formats such as alpha, luminance, etc. were added
1288 * with GL_ARB_framebuffer_object.
1290 switch (internalFormat
) {
1296 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1301 case GL_LUMINANCE12
:
1302 case GL_LUMINANCE16
:
1303 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1305 case GL_LUMINANCE_ALPHA
:
1306 case GL_LUMINANCE4_ALPHA4
:
1307 case GL_LUMINANCE6_ALPHA2
:
1308 case GL_LUMINANCE8_ALPHA8
:
1309 case GL_LUMINANCE12_ALPHA4
:
1310 case GL_LUMINANCE12_ALPHA12
:
1311 case GL_LUMINANCE16_ALPHA16
:
1312 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1313 ? GL_LUMINANCE_ALPHA
: 0;
1317 case GL_INTENSITY12
:
1318 case GL_INTENSITY16
:
1319 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1330 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1332 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1341 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1343 case GL_SRGB8_ALPHA8_EXT
:
1344 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1345 case GL_STENCIL_INDEX
:
1346 case GL_STENCIL_INDEX1_EXT
:
1347 case GL_STENCIL_INDEX4_EXT
:
1348 case GL_STENCIL_INDEX16_EXT
:
1349 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1350 * OpenGL ES, but Mesa does not currently support them.
1352 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1353 case GL_STENCIL_INDEX8_EXT
:
1354 return GL_STENCIL_INDEX
;
1355 case GL_DEPTH_COMPONENT
:
1356 case GL_DEPTH_COMPONENT32
:
1357 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1358 case GL_DEPTH_COMPONENT16
:
1359 case GL_DEPTH_COMPONENT24
:
1360 return GL_DEPTH_COMPONENT
;
1361 case GL_DEPTH_STENCIL_EXT
:
1362 return _mesa_is_desktop_gl(ctx
)
1363 && ctx
->Extensions
.EXT_packed_depth_stencil
1364 ? GL_DEPTH_STENCIL_EXT
: 0;
1365 case GL_DEPTH24_STENCIL8_EXT
:
1366 return ctx
->Extensions
.EXT_packed_depth_stencil
1367 ? GL_DEPTH_STENCIL_EXT
: 0;
1368 case GL_DEPTH_COMPONENT32F
:
1369 return ctx
->Version
>= 30
1370 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1371 ? GL_DEPTH_COMPONENT
: 0;
1372 case GL_DEPTH32F_STENCIL8
:
1373 return ctx
->Version
>= 30
1374 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1375 ? GL_DEPTH_STENCIL
: 0;
1378 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1381 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1385 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1388 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1390 /* signed normalized texture formats */
1394 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1399 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1403 case GL_RGB16_SNORM
:
1404 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1407 case GL_RGBA8_SNORM
:
1408 case GL_RGBA16_SNORM
:
1409 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1411 case GL_ALPHA_SNORM
:
1412 case GL_ALPHA8_SNORM
:
1413 case GL_ALPHA16_SNORM
:
1414 return ctx
->API
== API_OPENGL_COMPAT
&&
1415 ctx
->Extensions
.EXT_texture_snorm
&&
1416 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1419 return ((_mesa_is_desktop_gl(ctx
) &&
1420 ctx
->Extensions
.ARB_texture_rg
&&
1421 ctx
->Extensions
.ARB_texture_float
) ||
1422 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1426 return ((_mesa_is_desktop_gl(ctx
) &&
1427 ctx
->Extensions
.ARB_texture_rg
&&
1428 ctx
->Extensions
.ARB_texture_float
) ||
1429 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1433 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1437 return ((_mesa_is_desktop_gl(ctx
) &&
1438 ctx
->Extensions
.ARB_texture_float
) ||
1439 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1441 case GL_ALPHA16F_ARB
:
1442 case GL_ALPHA32F_ARB
:
1443 return ctx
->API
== API_OPENGL_COMPAT
&&
1444 ctx
->Extensions
.ARB_texture_float
&&
1445 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1446 case GL_LUMINANCE16F_ARB
:
1447 case GL_LUMINANCE32F_ARB
:
1448 return ctx
->API
== API_OPENGL_COMPAT
&&
1449 ctx
->Extensions
.ARB_texture_float
&&
1450 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1451 case GL_LUMINANCE_ALPHA16F_ARB
:
1452 case GL_LUMINANCE_ALPHA32F_ARB
:
1453 return ctx
->API
== API_OPENGL_COMPAT
&&
1454 ctx
->Extensions
.ARB_texture_float
&&
1455 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1456 case GL_INTENSITY16F_ARB
:
1457 case GL_INTENSITY32F_ARB
:
1458 return ctx
->API
== API_OPENGL_COMPAT
&&
1459 ctx
->Extensions
.ARB_texture_float
&&
1460 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1462 return (_mesa_is_desktop_gl(ctx
)
1463 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1465 case GL_R11F_G11F_B10F
:
1466 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1467 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1470 case GL_RGBA8UI_EXT
:
1471 case GL_RGBA16UI_EXT
:
1472 case GL_RGBA32UI_EXT
:
1474 case GL_RGBA16I_EXT
:
1475 case GL_RGBA32I_EXT
:
1476 return ctx
->Version
>= 30
1477 || (_mesa_is_desktop_gl(ctx
) &&
1478 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1481 case GL_RGB16UI_EXT
:
1482 case GL_RGB32UI_EXT
:
1486 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1494 return ctx
->Version
>= 30
1495 || (_mesa_is_desktop_gl(ctx
) &&
1496 ctx
->Extensions
.ARB_texture_rg
&&
1497 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1505 return ctx
->Version
>= 30
1506 || (_mesa_is_desktop_gl(ctx
) &&
1507 ctx
->Extensions
.ARB_texture_rg
&&
1508 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1510 case GL_INTENSITY8I_EXT
:
1511 case GL_INTENSITY8UI_EXT
:
1512 case GL_INTENSITY16I_EXT
:
1513 case GL_INTENSITY16UI_EXT
:
1514 case GL_INTENSITY32I_EXT
:
1515 case GL_INTENSITY32UI_EXT
:
1516 return ctx
->API
== API_OPENGL_COMPAT
&&
1517 ctx
->Extensions
.EXT_texture_integer
&&
1518 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1520 case GL_LUMINANCE8I_EXT
:
1521 case GL_LUMINANCE8UI_EXT
:
1522 case GL_LUMINANCE16I_EXT
:
1523 case GL_LUMINANCE16UI_EXT
:
1524 case GL_LUMINANCE32I_EXT
:
1525 case GL_LUMINANCE32UI_EXT
:
1526 return ctx
->API
== API_OPENGL_COMPAT
&&
1527 ctx
->Extensions
.EXT_texture_integer
&&
1528 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1530 case GL_LUMINANCE_ALPHA8I_EXT
:
1531 case GL_LUMINANCE_ALPHA8UI_EXT
:
1532 case GL_LUMINANCE_ALPHA16I_EXT
:
1533 case GL_LUMINANCE_ALPHA16UI_EXT
:
1534 case GL_LUMINANCE_ALPHA32I_EXT
:
1535 case GL_LUMINANCE_ALPHA32UI_EXT
:
1536 return ctx
->API
== API_OPENGL_COMPAT
&&
1537 ctx
->Extensions
.EXT_texture_integer
&&
1538 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1540 case GL_ALPHA8I_EXT
:
1541 case GL_ALPHA8UI_EXT
:
1542 case GL_ALPHA16I_EXT
:
1543 case GL_ALPHA16UI_EXT
:
1544 case GL_ALPHA32I_EXT
:
1545 case GL_ALPHA32UI_EXT
:
1546 return ctx
->API
== API_OPENGL_COMPAT
&&
1547 ctx
->Extensions
.EXT_texture_integer
&&
1548 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1551 return (_mesa_is_desktop_gl(ctx
) &&
1552 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1553 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1556 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1565 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1568 invalidate_rb(GLuint key
, void *data
, void *userData
)
1570 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1571 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1573 /* If this is a user-created FBO */
1574 if (_mesa_is_user_fbo(fb
)) {
1576 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1577 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1578 if (att
->Type
== GL_RENDERBUFFER
&&
1579 att
->Renderbuffer
== rb
) {
1580 /* Mark fb status as indeterminate to force re-validation */
1589 /** sentinal value, see below */
1590 #define NO_SAMPLES 1000
1594 * Helper function used by _mesa_RenderbufferStorage() and
1595 * _mesa_RenderbufferStorageMultisample().
1596 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1599 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1600 GLsizei width
, GLsizei height
, GLsizei samples
)
1602 const char *func
= samples
== NO_SAMPLES
?
1603 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1604 struct gl_renderbuffer
*rb
;
1606 GLenum sample_count_error
;
1607 GET_CURRENT_CONTEXT(ctx
);
1609 if (MESA_VERBOSE
& VERBOSE_API
) {
1610 if (samples
== NO_SAMPLES
)
1611 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1613 _mesa_lookup_enum_by_nr(target
),
1614 _mesa_lookup_enum_by_nr(internalFormat
),
1617 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1619 _mesa_lookup_enum_by_nr(target
),
1620 _mesa_lookup_enum_by_nr(internalFormat
),
1621 width
, height
, samples
);
1624 if (target
!= GL_RENDERBUFFER_EXT
) {
1625 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1629 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1630 if (baseFormat
== 0) {
1631 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1632 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1636 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1637 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1641 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1642 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1646 if (samples
== NO_SAMPLES
) {
1647 /* NumSamples == 0 indicates non-multisampling */
1651 /* check the sample count;
1652 * note: driver may choose to use more samples than what's requested
1654 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1655 internalFormat
, samples
);
1656 if (sample_count_error
!= GL_NO_ERROR
) {
1657 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1662 rb
= ctx
->CurrentRenderbuffer
;
1664 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1668 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1670 if (rb
->InternalFormat
== internalFormat
&&
1671 rb
->Width
== (GLuint
) width
&&
1672 rb
->Height
== (GLuint
) height
&&
1673 rb
->NumSamples
== samples
) {
1674 /* no change in allocation needed */
1678 /* These MUST get set by the AllocStorage func */
1679 rb
->Format
= MESA_FORMAT_NONE
;
1680 rb
->NumSamples
= samples
;
1682 /* Now allocate the storage */
1683 ASSERT(rb
->AllocStorage
);
1684 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1685 /* No error - check/set fields now */
1686 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1687 assert(rb
->Width
== (GLuint
) width
);
1688 assert(rb
->Height
== (GLuint
) height
);
1689 rb
->InternalFormat
= internalFormat
;
1690 rb
->_BaseFormat
= baseFormat
;
1691 assert(rb
->_BaseFormat
!= 0);
1694 /* Probably ran out of memory - clear the fields */
1697 rb
->Format
= MESA_FORMAT_NONE
;
1698 rb
->InternalFormat
= GL_NONE
;
1699 rb
->_BaseFormat
= GL_NONE
;
1703 /* Invalidate the framebuffers the renderbuffer is attached in. */
1704 if (rb
->AttachedAnytime
) {
1705 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1711 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1713 struct gl_renderbuffer
*rb
;
1714 GET_CURRENT_CONTEXT(ctx
);
1716 if (!ctx
->Extensions
.OES_EGL_image
) {
1717 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1718 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1722 if (target
!= GL_RENDERBUFFER
) {
1723 _mesa_error(ctx
, GL_INVALID_ENUM
,
1724 "EGLImageTargetRenderbufferStorageOES");
1728 rb
= ctx
->CurrentRenderbuffer
;
1730 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1731 "EGLImageTargetRenderbufferStorageOES");
1735 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1737 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1742 * Helper function for _mesa_GetRenderbufferParameteriv() and
1743 * _mesa_GetFramebufferAttachmentParameteriv()
1744 * We have to be careful to respect the base format. For example, if a
1745 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1746 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1747 * we need to return zero.
1750 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1752 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1753 return _mesa_get_format_bits(format
, pname
);
1761 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1762 GLsizei width
, GLsizei height
)
1764 /* GL_ARB_fbo says calling this function is equivalent to calling
1765 * glRenderbufferStorageMultisample() with samples=0. We pass in
1766 * a token value here just for error reporting purposes.
1768 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1773 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1774 GLenum internalFormat
,
1775 GLsizei width
, GLsizei height
)
1777 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1782 * OpenGL ES version of glRenderBufferStorage.
1785 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1786 GLsizei width
, GLsizei height
)
1788 switch (internalFormat
) {
1790 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1791 /* choose a closest format */
1792 internalFormat
= GL_RGB5
;
1798 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1803 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1805 struct gl_renderbuffer
*rb
;
1806 GET_CURRENT_CONTEXT(ctx
);
1808 if (target
!= GL_RENDERBUFFER_EXT
) {
1809 _mesa_error(ctx
, GL_INVALID_ENUM
,
1810 "glGetRenderbufferParameterivEXT(target)");
1814 rb
= ctx
->CurrentRenderbuffer
;
1816 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1817 "glGetRenderbufferParameterivEXT");
1821 /* No need to flush here since we're just quering state which is
1822 * not effected by rendering.
1826 case GL_RENDERBUFFER_WIDTH_EXT
:
1827 *params
= rb
->Width
;
1829 case GL_RENDERBUFFER_HEIGHT_EXT
:
1830 *params
= rb
->Height
;
1832 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1833 *params
= rb
->InternalFormat
;
1835 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1836 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1837 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1838 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1839 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1840 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1841 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1843 case GL_RENDERBUFFER_SAMPLES
:
1844 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1845 || _mesa_is_gles3(ctx
)) {
1846 *params
= rb
->NumSamples
;
1851 _mesa_error(ctx
, GL_INVALID_ENUM
,
1852 "glGetRenderbufferParameterivEXT(target)");
1858 GLboolean GLAPIENTRY
1859 _mesa_IsFramebuffer(GLuint framebuffer
)
1861 GET_CURRENT_CONTEXT(ctx
);
1862 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1864 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1865 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1873 * Check if any of the attachments of the given framebuffer are textures
1874 * (render to texture). Call ctx->Driver.RenderTexture() for such
1878 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1881 ASSERT(ctx
->Driver
.RenderTexture
);
1883 if (_mesa_is_winsys_fbo(fb
))
1884 return; /* can't render to texture with winsys framebuffers */
1886 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1887 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1888 if (att
->Texture
&& att
->Renderbuffer
->TexImage
) {
1889 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1896 * Examine all the framebuffer's attachments to see if any are textures.
1897 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1898 * notify the device driver that the texture image may have changed.
1901 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1903 if (_mesa_is_winsys_fbo(fb
))
1904 return; /* can't render to texture with winsys framebuffers */
1906 if (ctx
->Driver
.FinishRenderTexture
) {
1908 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1909 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1910 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
1911 if (rb
&& rb
->NeedsFinishRenderTexture
) {
1912 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
1920 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
1922 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1923 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1924 GLboolean bindReadBuf
, bindDrawBuf
;
1925 GET_CURRENT_CONTEXT(ctx
);
1928 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1929 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1934 case GL_DRAW_FRAMEBUFFER_EXT
:
1935 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1936 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1939 bindDrawBuf
= GL_TRUE
;
1940 bindReadBuf
= GL_FALSE
;
1942 case GL_READ_FRAMEBUFFER_EXT
:
1943 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1944 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1947 bindDrawBuf
= GL_FALSE
;
1948 bindReadBuf
= GL_TRUE
;
1950 case GL_FRAMEBUFFER_EXT
:
1951 bindDrawBuf
= GL_TRUE
;
1952 bindReadBuf
= GL_TRUE
;
1955 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1960 /* Binding a user-created framebuffer object */
1961 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1962 if (newDrawFb
== &DummyFramebuffer
) {
1963 /* ID was reserved, but no real framebuffer object made yet */
1966 else if (!newDrawFb
&& !allow_user_names
) {
1967 /* All FBO IDs must be Gen'd */
1968 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1973 /* create new framebuffer object */
1974 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1976 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1979 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1981 newReadFb
= newDrawFb
;
1984 /* Binding the window system framebuffer (which was originally set
1985 * with MakeCurrent).
1987 newDrawFb
= ctx
->WinSysDrawBuffer
;
1988 newReadFb
= ctx
->WinSysReadBuffer
;
1992 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1994 /* save pointers to current/old framebuffers */
1995 oldDrawFb
= ctx
->DrawBuffer
;
1996 oldReadFb
= ctx
->ReadBuffer
;
1998 /* check if really changing bindings */
1999 if (oldDrawFb
== newDrawFb
)
2000 bindDrawBuf
= GL_FALSE
;
2001 if (oldReadFb
== newReadFb
)
2002 bindReadBuf
= GL_FALSE
;
2005 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2007 * We also check if we're beginning and/or ending render-to-texture.
2008 * When a framebuffer with texture attachments is unbound, call
2009 * ctx->Driver.FinishRenderTexture().
2010 * When a framebuffer with texture attachments is bound, call
2011 * ctx->Driver.RenderTexture().
2013 * Note that if the ReadBuffer has texture attachments we don't consider
2014 * that a render-to-texture case.
2017 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2019 /* check if old readbuffer was render-to-texture */
2020 check_end_texture_render(ctx
, oldReadFb
);
2022 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2026 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2028 /* check if old framebuffer had any texture attachments */
2030 check_end_texture_render(ctx
, oldDrawFb
);
2032 /* check if newly bound framebuffer has any texture attachments */
2033 check_begin_texture_render(ctx
, newDrawFb
);
2035 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2038 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2039 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2044 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2046 GET_CURRENT_CONTEXT(ctx
);
2048 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2049 * point, but they allow the use of user-generated names.
2051 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2055 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2057 /* This function should not be in the dispatch table for core profile /
2058 * OpenGL 3.1, so execution should never get here in those cases -- no
2059 * need for an explicit test.
2061 bind_framebuffer(target
, framebuffer
, true);
2065 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2068 GET_CURRENT_CONTEXT(ctx
);
2070 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2072 for (i
= 0; i
< n
; i
++) {
2073 if (framebuffers
[i
] > 0) {
2074 struct gl_framebuffer
*fb
;
2075 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2077 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2079 /* check if deleting currently bound framebuffer object */
2080 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
2081 /* separate draw/read binding points */
2082 if (fb
== ctx
->DrawBuffer
) {
2084 ASSERT(fb
->RefCount
>= 2);
2085 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT
, 0);
2087 if (fb
== ctx
->ReadBuffer
) {
2089 ASSERT(fb
->RefCount
>= 2);
2090 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT
, 0);
2094 /* only one binding point for read/draw buffers */
2095 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
2097 ASSERT(fb
->RefCount
>= 2);
2098 _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT
, 0);
2102 /* remove from hash table immediately, to free the ID */
2103 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2105 if (fb
!= &DummyFramebuffer
) {
2106 /* But the object will not be freed until it's no longer
2107 * bound in any context.
2109 _mesa_reference_framebuffer(&fb
, NULL
);
2118 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2120 GET_CURRENT_CONTEXT(ctx
);
2125 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2132 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2134 for (i
= 0; i
< n
; i
++) {
2135 GLuint name
= first
+ i
;
2136 framebuffers
[i
] = name
;
2137 /* insert dummy placeholder into hash table */
2138 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
2139 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2140 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
2147 _mesa_CheckFramebufferStatus(GLenum target
)
2149 struct gl_framebuffer
*buffer
;
2150 GET_CURRENT_CONTEXT(ctx
);
2152 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2154 if (MESA_VERBOSE
& VERBOSE_API
)
2155 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2156 _mesa_lookup_enum_by_nr(target
));
2158 buffer
= get_framebuffer_target(ctx
, target
);
2160 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2164 if (_mesa_is_winsys_fbo(buffer
)) {
2165 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2166 if (buffer
!= &IncompleteFramebuffer
) {
2167 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2169 return GL_FRAMEBUFFER_UNDEFINED
;
2173 /* No need to flush here */
2175 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2176 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2179 return buffer
->_Status
;
2184 * Replicate the src attachment point. Used by framebuffer_texture() when
2185 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2186 * GL_STENCIL_ATTACHMENT.
2189 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2190 gl_buffer_index dst
,
2191 gl_buffer_index src
)
2193 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2194 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2196 assert(src_att
->Texture
!= NULL
);
2197 assert(src_att
->Renderbuffer
!= NULL
);
2199 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2200 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2201 dst_att
->Type
= src_att
->Type
;
2202 dst_att
->Complete
= src_att
->Complete
;
2203 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2204 dst_att
->Zoffset
= src_att
->Zoffset
;
2209 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2210 * glFramebufferTextureLayerEXT().
2211 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
2212 * get textarget=0 in that case.
2215 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2216 GLenum attachment
, GLenum textarget
, GLuint texture
,
2217 GLint level
, GLint zoffset
, GLboolean layered
)
2219 struct gl_renderbuffer_attachment
*att
;
2220 struct gl_texture_object
*texObj
= NULL
;
2221 struct gl_framebuffer
*fb
;
2222 GLenum maxLevelsTarget
;
2224 fb
= get_framebuffer_target(ctx
, target
);
2226 _mesa_error(ctx
, GL_INVALID_ENUM
,
2227 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2231 /* check framebuffer binding */
2232 if (_mesa_is_winsys_fbo(fb
)) {
2233 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2234 "glFramebufferTexture%sEXT", caller
);
2238 /* The textarget, level, and zoffset parameters are only validated if
2239 * texture is non-zero.
2242 GLboolean err
= GL_TRUE
;
2244 texObj
= _mesa_lookup_texture(ctx
, texture
);
2245 if (texObj
!= NULL
) {
2246 if (textarget
== 0) {
2247 /* If textarget == 0 it means we're being called by
2248 * glFramebufferTextureLayer() and textarget is not used.
2249 * The only legal texture types for that function are 3D and
2250 * 1D/2D arrays textures.
2252 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2253 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2254 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2255 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2256 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2259 /* Make sure textarget is consistent with the texture's type */
2260 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2261 ? !_mesa_is_cube_face(textarget
)
2262 : (texObj
->Target
!= textarget
);
2266 /* can't render to a non-existant texture */
2267 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2268 "glFramebufferTexture%sEXT(non existant texture)",
2274 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2275 "glFramebufferTexture%sEXT(texture target mismatch)",
2280 if (texObj
->Target
== GL_TEXTURE_3D
) {
2281 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2282 if (zoffset
< 0 || zoffset
>= maxSize
) {
2283 _mesa_error(ctx
, GL_INVALID_VALUE
,
2284 "glFramebufferTexture%sEXT(zoffset)", caller
);
2288 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2289 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2290 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2291 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2293 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2294 _mesa_error(ctx
, GL_INVALID_VALUE
,
2295 "glFramebufferTexture%sEXT(layer)", caller
);
2300 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2302 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2303 _mesa_error(ctx
, GL_INVALID_VALUE
,
2304 "glFramebufferTexture%sEXT(level)", caller
);
2309 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2311 _mesa_error(ctx
, GL_INVALID_ENUM
,
2312 "glFramebufferTexture%sEXT(attachment)", caller
);
2316 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2318 _glthread_LOCK_MUTEX(fb
->Mutex
);
2320 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2321 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2322 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2323 _mesa_tex_target_to_face(textarget
) ==
2324 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2325 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2326 /* The texture object is already attached to the stencil attachment
2327 * point. Don't create a new renderbuffer; just reuse the stencil
2328 * attachment's. This is required to prevent a GL error in
2329 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2331 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2333 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2334 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2335 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2336 _mesa_tex_target_to_face(textarget
) ==
2337 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2338 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2339 /* As above, but with depth and stencil transposed. */
2340 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2343 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2344 level
, zoffset
, layered
);
2345 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2346 /* Above we created a new renderbuffer and attached it to the
2347 * depth attachment point. Now attach it to the stencil attachment
2350 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2351 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2356 /* Set the render-to-texture flag. We'll check this flag in
2357 * glTexImage() and friends to determine if we need to revalidate
2358 * any FBOs that might be rendering into this texture.
2359 * This flag never gets cleared since it's non-trivial to determine
2360 * when all FBOs might be done rendering to this texture. That's OK
2361 * though since it's uncommon to render to a texture then repeatedly
2362 * call glTexImage() to change images in the texture.
2364 texObj
->_RenderToTexture
= GL_TRUE
;
2367 _mesa_remove_attachment(ctx
, att
);
2368 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2369 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2370 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2374 invalidate_framebuffer(fb
);
2376 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2382 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2383 GLenum textarget
, GLuint texture
, GLint level
)
2385 GET_CURRENT_CONTEXT(ctx
);
2390 switch (textarget
) {
2394 case GL_TEXTURE_1D_ARRAY
:
2395 error
= !ctx
->Extensions
.EXT_texture_array
;
2402 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2403 "glFramebufferTexture1DEXT(textarget=%s)",
2404 _mesa_lookup_enum_by_nr(textarget
));
2409 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2410 level
, 0, GL_FALSE
);
2415 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2416 GLenum textarget
, GLuint texture
, GLint level
)
2418 GET_CURRENT_CONTEXT(ctx
);
2423 switch (textarget
) {
2427 case GL_TEXTURE_RECTANGLE
:
2428 error
= _mesa_is_gles(ctx
)
2429 || !ctx
->Extensions
.NV_texture_rectangle
;
2431 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2432 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2433 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2434 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2435 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2436 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2437 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2439 case GL_TEXTURE_2D_ARRAY
:
2440 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2441 || !ctx
->Extensions
.EXT_texture_array
;
2443 case GL_TEXTURE_2D_MULTISAMPLE
:
2444 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2445 error
= _mesa_is_gles(ctx
)
2446 || !ctx
->Extensions
.ARB_texture_multisample
;
2453 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2454 "glFramebufferTexture2DEXT(textarget=%s)",
2455 _mesa_lookup_enum_by_nr(textarget
));
2460 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2461 level
, 0, GL_FALSE
);
2466 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2467 GLenum textarget
, GLuint texture
,
2468 GLint level
, GLint zoffset
)
2470 GET_CURRENT_CONTEXT(ctx
);
2472 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2473 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2474 "glFramebufferTexture3DEXT(textarget)");
2478 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2479 level
, zoffset
, GL_FALSE
);
2484 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2485 GLuint texture
, GLint level
, GLint layer
)
2487 GET_CURRENT_CONTEXT(ctx
);
2489 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2490 level
, layer
, GL_FALSE
);
2495 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2496 GLuint texture
, GLint level
)
2498 GET_CURRENT_CONTEXT(ctx
);
2500 if (_mesa_has_geometry_shaders(ctx
)) {
2501 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2504 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2505 "unsupported function (glFramebufferTexture) called");
2511 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2512 GLenum renderbufferTarget
,
2513 GLuint renderbuffer
)
2515 struct gl_renderbuffer_attachment
*att
;
2516 struct gl_framebuffer
*fb
;
2517 struct gl_renderbuffer
*rb
;
2518 GET_CURRENT_CONTEXT(ctx
);
2520 fb
= get_framebuffer_target(ctx
, target
);
2522 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2526 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2527 _mesa_error(ctx
, GL_INVALID_ENUM
,
2528 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2532 if (_mesa_is_winsys_fbo(fb
)) {
2533 /* Can't attach new renderbuffers to a window system framebuffer */
2534 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2538 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2540 _mesa_error(ctx
, GL_INVALID_ENUM
,
2541 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2542 _mesa_lookup_enum_by_nr(attachment
));
2547 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2549 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2550 "glFramebufferRenderbufferEXT(non-existant"
2551 " renderbuffer %u)", renderbuffer
);
2554 else if (rb
== &DummyRenderbuffer
) {
2555 /* This is what NVIDIA does */
2556 _mesa_error(ctx
, GL_INVALID_VALUE
,
2557 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2563 /* remove renderbuffer attachment */
2567 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2568 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2569 /* make sure the renderbuffer is a depth/stencil format */
2570 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2571 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2572 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2573 "glFramebufferRenderbufferEXT(renderbuffer"
2574 " is not DEPTH_STENCIL format)");
2580 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2582 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2583 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2585 /* Some subsequent GL commands may depend on the framebuffer's visual
2586 * after the binding is updated. Update visual info now.
2588 _mesa_update_framebuffer_visual(ctx
, fb
);
2593 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2594 GLenum pname
, GLint
*params
)
2596 const struct gl_renderbuffer_attachment
*att
;
2597 struct gl_framebuffer
*buffer
;
2599 GET_CURRENT_CONTEXT(ctx
);
2601 /* The error differs in GL and GLES. */
2602 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2604 buffer
= get_framebuffer_target(ctx
, target
);
2606 _mesa_error(ctx
, GL_INVALID_ENUM
,
2607 "glGetFramebufferAttachmentParameterivEXT(target)");
2611 if (_mesa_is_winsys_fbo(buffer
)) {
2612 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2615 * "If the framebuffer currently bound to target is zero, then
2616 * INVALID_OPERATION is generated."
2618 * The EXT_framebuffer_object spec has the same wording, and the
2619 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2622 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2623 && !_mesa_is_gles3(ctx
)) {
2624 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2625 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2629 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2630 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2631 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2632 "glGetFramebufferAttachmentParameteriv(attachment)");
2635 /* the default / window-system FBO */
2636 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2639 /* user-created framebuffer FBO */
2640 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2644 _mesa_error(ctx
, GL_INVALID_ENUM
,
2645 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2649 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2650 /* the depth and stencil attachments must point to the same buffer */
2651 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2652 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2653 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2654 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2655 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2656 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2657 " attachments differ)");
2662 /* No need to flush here */
2665 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2666 *params
= _mesa_is_winsys_fbo(buffer
)
2667 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2669 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2670 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2671 *params
= att
->Renderbuffer
->Name
;
2673 else if (att
->Type
== GL_TEXTURE
) {
2674 *params
= att
->Texture
->Name
;
2677 assert(att
->Type
== GL_NONE
);
2678 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2681 goto invalid_pname_enum
;
2685 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2686 if (att
->Type
== GL_TEXTURE
) {
2687 *params
= att
->TextureLevel
;
2689 else if (att
->Type
== GL_NONE
) {
2690 _mesa_error(ctx
, err
,
2691 "glGetFramebufferAttachmentParameterivEXT(pname)");
2694 goto invalid_pname_enum
;
2697 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2698 if (att
->Type
== GL_TEXTURE
) {
2699 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2700 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2706 else if (att
->Type
== GL_NONE
) {
2707 _mesa_error(ctx
, err
,
2708 "glGetFramebufferAttachmentParameterivEXT(pname)");
2711 goto invalid_pname_enum
;
2714 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2715 if (ctx
->API
== API_OPENGLES
) {
2716 goto invalid_pname_enum
;
2717 } else if (att
->Type
== GL_NONE
) {
2718 _mesa_error(ctx
, err
,
2719 "glGetFramebufferAttachmentParameterivEXT(pname)");
2720 } else if (att
->Type
== GL_TEXTURE
) {
2721 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2722 *params
= att
->Zoffset
;
2729 goto invalid_pname_enum
;
2732 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2733 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2734 && !_mesa_is_gles3(ctx
)) {
2735 goto invalid_pname_enum
;
2737 else if (att
->Type
== GL_NONE
) {
2738 _mesa_error(ctx
, err
,
2739 "glGetFramebufferAttachmentParameterivEXT(pname)");
2742 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2743 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2746 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2747 * if the sRGB conversion is unsupported. */
2748 *params
= GL_LINEAR
;
2752 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2753 if ((ctx
->API
!= API_OPENGL_COMPAT
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2754 && ctx
->API
!= API_OPENGL_CORE
2755 && !_mesa_is_gles3(ctx
)) {
2756 goto invalid_pname_enum
;
2758 else if (att
->Type
== GL_NONE
) {
2759 _mesa_error(ctx
, err
,
2760 "glGetFramebufferAttachmentParameterivEXT(pname)");
2763 gl_format format
= att
->Renderbuffer
->Format
;
2765 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2768 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2769 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2770 * generate an INVALID_OPERATION error.
2772 if (_mesa_is_gles3(ctx
) && attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2773 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2774 "glGetFramebufferAttachmentParameteriv(cannot query "
2775 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2776 "GL_DEPTH_STENCIL_ATTACHMENT");
2780 if (format
== MESA_FORMAT_S8
) {
2784 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2785 /* depends on the attachment parameter */
2786 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2794 *params
= _mesa_get_format_datatype(format
);
2798 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2799 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2800 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2801 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2802 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2803 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2804 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2805 && !_mesa_is_gles3(ctx
)) {
2806 goto invalid_pname_enum
;
2808 else if (att
->Type
== GL_NONE
) {
2809 _mesa_error(ctx
, err
,
2810 "glGetFramebufferAttachmentParameterivEXT(pname)");
2812 else if (att
->Texture
) {
2813 const struct gl_texture_image
*texImage
=
2814 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2817 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2818 texImage
->TexFormat
);
2824 else if (att
->Renderbuffer
) {
2825 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2826 att
->Renderbuffer
->Format
);
2829 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2830 " invalid FBO attachment structure");
2834 goto invalid_pname_enum
;
2840 _mesa_error(ctx
, GL_INVALID_ENUM
,
2841 "glGetFramebufferAttachmentParameteriv(pname)");
2847 _mesa_GenerateMipmap(GLenum target
)
2849 struct gl_texture_image
*srcImage
;
2850 struct gl_texture_object
*texObj
;
2853 GET_CURRENT_CONTEXT(ctx
);
2855 FLUSH_VERTICES(ctx
, 0);
2859 error
= _mesa_is_gles(ctx
);
2865 error
= ctx
->API
== API_OPENGLES
;
2867 case GL_TEXTURE_CUBE_MAP
:
2868 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2870 case GL_TEXTURE_1D_ARRAY
:
2871 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2873 case GL_TEXTURE_2D_ARRAY
:
2874 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2875 || !ctx
->Extensions
.EXT_texture_array
;
2882 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2883 _mesa_lookup_enum_by_nr(target
));
2887 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2889 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2894 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2895 !_mesa_cube_complete(texObj
)) {
2896 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2897 "glGenerateMipmap(incomplete cube map)");
2901 _mesa_lock_texture(ctx
, texObj
);
2903 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2905 _mesa_unlock_texture(ctx
, texObj
);
2906 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2907 "glGenerateMipmap(zero size base image)");
2911 if (_mesa_is_enum_format_integer(srcImage
->InternalFormat
) ||
2912 _mesa_is_depthstencil_format(srcImage
->InternalFormat
) ||
2913 _mesa_is_stencil_format(srcImage
->InternalFormat
)) {
2914 _mesa_unlock_texture(ctx
, texObj
);
2915 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2916 "glGenerateMipmap(invalid internal format)");
2920 if (target
== GL_TEXTURE_CUBE_MAP
) {
2922 for (face
= 0; face
< 6; face
++)
2923 ctx
->Driver
.GenerateMipmap(ctx
,
2924 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2928 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2930 _mesa_unlock_texture(ctx
, texObj
);
2934 static const struct gl_renderbuffer_attachment
*
2935 find_attachment(const struct gl_framebuffer
*fb
,
2936 const struct gl_renderbuffer
*rb
)
2939 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2940 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2941 return &fb
->Attachment
[i
];
2948 * Helper function for checking if the datatypes of color buffers are
2949 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2951 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2952 * and any of the following conditions hold:
2953 * - The read buffer contains fixed-point or floating-point values and any
2954 * draw buffer contains neither fixed-point nor floating-point values.
2955 * - The read buffer contains unsigned integer values and any draw buffer
2956 * does not contain unsigned integer values.
2957 * - The read buffer contains signed integer values and any draw buffer
2958 * does not contain signed integer values."
2961 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2963 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2964 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2966 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2967 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2968 srcType
== GL_SIGNED_NORMALIZED
||
2969 srcType
== GL_FLOAT
);
2970 /* Boil any of those types down to GL_FLOAT */
2974 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2975 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2976 dstType
== GL_SIGNED_NORMALIZED
||
2977 dstType
== GL_FLOAT
);
2978 /* Boil any of those types down to GL_FLOAT */
2982 return srcType
== dstType
;
2987 compatible_resolve_formats(const struct gl_renderbuffer
*readRb
,
2988 const struct gl_renderbuffer
*drawRb
)
2990 GLenum readFormat
, drawFormat
;
2992 /* The simple case where we know the backing Mesa formats are the same.
2994 if (_mesa_get_srgb_format_linear(readRb
->Format
) ==
2995 _mesa_get_srgb_format_linear(drawRb
->Format
)) {
2999 /* The Mesa formats are different, so we must check whether the internal
3000 * formats are compatible.
3002 * Under some circumstances, the user may request e.g. two GL_RGBA8
3003 * textures and get two entirely different Mesa formats like RGBA8888 and
3004 * ARGB8888. Drivers behaving like that should be able to cope with
3005 * non-matching formats by themselves, because it's not the user's fault.
3007 * Blits between linear and sRGB formats are also allowed.
3009 readFormat
= _mesa_get_nongeneric_internalformat(readRb
->InternalFormat
);
3010 drawFormat
= _mesa_get_nongeneric_internalformat(drawRb
->InternalFormat
);
3011 readFormat
= _mesa_get_linear_internalformat(readFormat
);
3012 drawFormat
= _mesa_get_linear_internalformat(drawFormat
);
3014 if (readFormat
== drawFormat
) {
3022 is_valid_blit_filter(const struct gl_context
*ctx
, GLenum filter
)
3028 case GL_SCALED_RESOLVE_FASTEST_EXT
:
3029 case GL_SCALED_RESOLVE_NICEST_EXT
:
3030 return ctx
->Extensions
.EXT_framebuffer_multisample_blit_scaled
;
3037 * Blit rectangular region, optionally from one framebuffer to another.
3039 * Note, if the src buffer is multisampled and the dest is not, this is
3040 * when the samples must be resolved to a single color.
3043 _mesa_BlitFramebuffer(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
3044 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
3045 GLbitfield mask
, GLenum filter
)
3047 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
3048 GL_DEPTH_BUFFER_BIT
|
3049 GL_STENCIL_BUFFER_BIT
);
3050 const struct gl_framebuffer
*readFb
, *drawFb
;
3051 GET_CURRENT_CONTEXT(ctx
);
3053 FLUSH_VERTICES(ctx
, 0);
3055 if (MESA_VERBOSE
& VERBOSE_API
)
3057 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
3058 srcX0
, srcY0
, srcX1
, srcY1
,
3059 dstX0
, dstY0
, dstX1
, dstY1
,
3060 mask
, _mesa_lookup_enum_by_nr(filter
));
3062 if (ctx
->NewState
) {
3063 _mesa_update_state(ctx
);
3066 readFb
= ctx
->ReadBuffer
;
3067 drawFb
= ctx
->DrawBuffer
;
3069 if (!readFb
|| !drawFb
) {
3070 /* This will normally never happen but someday we may want to
3071 * support MakeCurrent() with no drawables.
3076 /* check for complete framebuffers */
3077 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
3078 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
3079 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
3080 "glBlitFramebufferEXT(incomplete draw/read buffers)");
3084 if (!is_valid_blit_filter(ctx
, filter
)) {
3085 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(%s)",
3086 _mesa_lookup_enum_by_nr(filter
));
3090 if ((filter
== GL_SCALED_RESOLVE_FASTEST_EXT
||
3091 filter
== GL_SCALED_RESOLVE_NICEST_EXT
) &&
3092 (readFb
->Visual
.samples
== 0 || drawFb
->Visual
.samples
> 0)) {
3093 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT(%s)",
3094 _mesa_lookup_enum_by_nr(filter
));
3098 if (mask
& ~legalMaskBits
) {
3099 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
3103 /* depth/stencil must be blitted with nearest filtering */
3104 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
3105 && filter
!= GL_NEAREST
) {
3106 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3107 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
3111 /* get color read/draw renderbuffers */
3112 if (mask
& GL_COLOR_BUFFER_BIT
) {
3113 const GLuint numColorDrawBuffers
= ctx
->DrawBuffer
->_NumColorDrawBuffers
;
3114 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3115 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3118 /* From the EXT_framebuffer_object spec:
3120 * "If a buffer is specified in <mask> and does not exist in both
3121 * the read and draw framebuffers, the corresponding bit is silently
3124 if (!colorReadRb
|| numColorDrawBuffers
== 0) {
3125 mask
&= ~GL_COLOR_BUFFER_BIT
;
3128 for (i
= 0; i
< numColorDrawBuffers
; i
++) {
3129 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3133 /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
3134 * ES 3.0.1 spec says:
3136 * "If the source and destination buffers are identical, an
3137 * INVALID_OPERATION error is generated. Different mipmap
3138 * levels of a texture, different layers of a three-
3139 * dimensional texture or two-dimensional array texture, and
3140 * different faces of a cube map texture do not constitute
3141 * identical buffers."
3143 if (_mesa_is_gles3(ctx
) && (colorDrawRb
== colorReadRb
)) {
3144 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3145 "glBlitFramebuffer(source and destination color "
3146 "buffer cannot be the same)");
3150 if (!compatible_color_datatypes(colorReadRb
->Format
,
3151 colorDrawRb
->Format
)) {
3152 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3153 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
3156 /* extra checks for multisample copies... */
3157 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3158 /* color formats must match */
3159 if (!compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
3160 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3161 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
3166 if (filter
!= GL_NEAREST
) {
3167 /* From EXT_framebuffer_multisample_blit_scaled specification:
3168 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3169 * if filter is not NEAREST and read buffer contains integer data."
3171 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3172 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3173 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3174 "glBlitFramebufferEXT(integer color type)");
3181 if (mask
& GL_STENCIL_BUFFER_BIT
) {
3182 struct gl_renderbuffer
*readRb
=
3183 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3184 struct gl_renderbuffer
*drawRb
=
3185 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3187 /* From the EXT_framebuffer_object spec:
3189 * "If a buffer is specified in <mask> and does not exist in both
3190 * the read and draw framebuffers, the corresponding bit is silently
3193 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3194 mask
&= ~GL_STENCIL_BUFFER_BIT
;
3197 int read_z_bits
, draw_z_bits
;
3199 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3200 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3201 "glBlitFramebuffer(source and destination stencil "
3202 "buffer cannot be the same)");
3206 if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
3207 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
3208 /* There is no need to check the stencil datatype here, because
3209 * there is only one: GL_UNSIGNED_INT.
3211 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3212 "glBlitFramebuffer(stencil attachment format mismatch)");
3216 read_z_bits
= _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
);
3217 draw_z_bits
= _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
);
3219 /* If both buffers also have depth data, the depth formats must match
3220 * as well. If one doesn't have depth, it's not blitted, so we should
3221 * ignore the depth format check.
3223 if (read_z_bits
> 0 && draw_z_bits
> 0 &&
3224 (read_z_bits
!= draw_z_bits
||
3225 _mesa_get_format_datatype(readRb
->Format
) !=
3226 _mesa_get_format_datatype(drawRb
->Format
))) {
3228 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3229 "(stencil attachment depth format mismatch)");
3235 if (mask
& GL_DEPTH_BUFFER_BIT
) {
3236 struct gl_renderbuffer
*readRb
=
3237 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3238 struct gl_renderbuffer
*drawRb
=
3239 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3241 /* From the EXT_framebuffer_object spec:
3243 * "If a buffer is specified in <mask> and does not exist in both
3244 * the read and draw framebuffers, the corresponding bit is silently
3247 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3248 mask
&= ~GL_DEPTH_BUFFER_BIT
;
3251 int read_s_bit
, draw_s_bit
;
3253 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3254 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3255 "glBlitFramebuffer(source and destination depth "
3256 "buffer cannot be the same)");
3260 if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
3261 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
3262 (_mesa_get_format_datatype(readRb
->Format
) !=
3263 _mesa_get_format_datatype(drawRb
->Format
))) {
3264 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3265 "glBlitFramebuffer(depth attachment format mismatch)");
3269 read_s_bit
= _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
);
3270 draw_s_bit
= _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
);
3272 /* If both buffers also have stencil data, the stencil formats must
3273 * match as well. If one doesn't have stencil, it's not blitted, so
3274 * we should ignore the stencil format check.
3276 if (read_s_bit
> 0 && draw_s_bit
> 0 && read_s_bit
!= draw_s_bit
) {
3277 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3278 "(depth attachment stencil bits mismatch)");
3285 if (_mesa_is_gles3(ctx
)) {
3286 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3289 * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
3290 * an INVALID_OPERATION error is generated."
3292 if (drawFb
->Visual
.samples
> 0) {
3293 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3294 "glBlitFramebuffer(destination samples must be 0)");
3298 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3301 * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
3302 * no copy is performed and an INVALID_OPERATION error is generated
3303 * if the formats of the read and draw framebuffers are not
3304 * identical or if the source and destination rectangles are not
3305 * defined with the same (X0, Y0) and (X1, Y1) bounds."
3307 * The format check was made above because desktop OpenGL has the same
3310 if (readFb
->Visual
.samples
> 0
3311 && (srcX0
!= dstX0
|| srcY0
!= dstY0
3312 || srcX1
!= dstX1
|| srcY1
!= dstY1
)) {
3313 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3314 "glBlitFramebuffer(bad src/dst multisample region)");
3318 if (readFb
->Visual
.samples
> 0 &&
3319 drawFb
->Visual
.samples
> 0 &&
3320 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
3321 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3322 "glBlitFramebufferEXT(mismatched samples)");
3326 /* extra checks for multisample copies... */
3327 if ((readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) &&
3328 (filter
== GL_NEAREST
|| filter
== GL_LINEAR
)) {
3329 /* src and dest region sizes must be the same */
3330 if (abs(srcX1
- srcX0
) != abs(dstX1
- dstX0
) ||
3331 abs(srcY1
- srcY0
) != abs(dstY1
- dstY0
)) {
3332 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3333 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
3339 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3340 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3346 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3347 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3350 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3352 srcX0
, srcY0
, srcX1
, srcY1
,
3353 dstX0
, dstY0
, dstX1
, dstY1
,
3356 const struct gl_renderbuffer_attachment
*att
;
3358 att
= find_attachment(readFb
, colorReadRb
);
3359 printf(" Src FBO %u RB %u (%dx%d) ",
3360 readFb
->Name
, colorReadRb
->Name
,
3361 colorReadRb
->Width
, colorReadRb
->Height
);
3362 if (att
&& att
->Texture
) {
3363 printf("Tex %u tgt 0x%x level %u face %u",
3365 att
->Texture
->Target
,
3371 /* Print all active color render buffers */
3372 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
3373 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3377 att
= find_attachment(drawFb
, colorDrawRb
);
3378 printf(" Dst FBO %u RB %u (%dx%d) ",
3379 drawFb
->Name
, colorDrawRb
->Name
,
3380 colorDrawRb
->Width
, colorDrawRb
->Height
);
3381 if (att
&& att
->Texture
) {
3382 printf("Tex %u tgt 0x%x level %u face %u",
3384 att
->Texture
->Target
,
3394 (srcX1
- srcX0
) == 0 || (srcY1
- srcY0
) == 0 ||
3395 (dstX1
- dstX0
) == 0 || (dstY1
- dstY0
) == 0) {
3399 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3400 ctx
->Driver
.BlitFramebuffer(ctx
,
3401 srcX0
, srcY0
, srcX1
, srcY1
,
3402 dstX0
, dstY0
, dstX1
, dstY1
,
3408 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3409 const GLenum
*attachments
, GLint x
, GLint y
,
3410 GLsizei width
, GLsizei height
, const char *name
)
3413 struct gl_framebuffer
*fb
;
3414 GET_CURRENT_CONTEXT(ctx
);
3416 fb
= get_framebuffer_target(ctx
, target
);
3418 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3422 if (numAttachments
< 0) {
3423 _mesa_error(ctx
, GL_INVALID_VALUE
,
3424 "%s(numAttachments < 0)", name
);
3428 /* The GL_ARB_invalidate_subdata spec says:
3430 * "If an attachment is specified that does not exist in the
3431 * framebuffer bound to <target>, it is ignored."
3435 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3436 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3437 * INVALID_OPERATION is generated."
3439 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3440 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3441 * set of retrictions).
3443 for (i
= 0; i
< numAttachments
; i
++) {
3444 if (_mesa_is_winsys_fbo(fb
)) {
3445 switch (attachments
[i
]) {
3451 /* Accumulation buffers and auxilary buffers were removed in
3452 * OpenGL 3.1, and they never existed in OpenGL ES.
3454 if (ctx
->API
!= API_OPENGL_COMPAT
)
3464 case GL_FRONT_RIGHT
:
3465 if (!_mesa_is_desktop_gl(ctx
))
3472 switch (attachments
[i
]) {
3473 case GL_DEPTH_ATTACHMENT
:
3474 case GL_STENCIL_ATTACHMENT
:
3476 case GL_COLOR_ATTACHMENT0
:
3477 case GL_COLOR_ATTACHMENT1
:
3478 case GL_COLOR_ATTACHMENT2
:
3479 case GL_COLOR_ATTACHMENT3
:
3480 case GL_COLOR_ATTACHMENT4
:
3481 case GL_COLOR_ATTACHMENT5
:
3482 case GL_COLOR_ATTACHMENT6
:
3483 case GL_COLOR_ATTACHMENT7
:
3484 case GL_COLOR_ATTACHMENT8
:
3485 case GL_COLOR_ATTACHMENT9
:
3486 case GL_COLOR_ATTACHMENT10
:
3487 case GL_COLOR_ATTACHMENT11
:
3488 case GL_COLOR_ATTACHMENT12
:
3489 case GL_COLOR_ATTACHMENT13
:
3490 case GL_COLOR_ATTACHMENT14
:
3491 case GL_COLOR_ATTACHMENT15
: {
3492 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3493 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3494 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3495 "%s(attachment >= max. color attachments)", name
);
3505 /* We don't actually do anything for this yet. Just return after
3506 * validating the parameters and generating the required errors.
3511 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3516 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3517 const GLenum
*attachments
, GLint x
, GLint y
,
3518 GLsizei width
, GLsizei height
)
3520 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3521 x
, y
, width
, height
,
3522 "glInvalidateSubFramebuffer");
3526 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3527 const GLenum
*attachments
)
3529 /* The GL_ARB_invalidate_subdata spec says:
3533 * void InvalidateFramebuffer(enum target,
3534 * sizei numAttachments,
3535 * const enum *attachments);
3537 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3538 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3539 * <MAX_VIEWPORT_DIMS[1]> respectively."
3541 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3542 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3543 "glInvalidateFramebuffer");
3547 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3548 const GLenum
*attachments
)
3550 struct gl_framebuffer
*fb
;
3553 GET_CURRENT_CONTEXT(ctx
);
3555 fb
= get_framebuffer_target(ctx
, target
);
3557 _mesa_error(ctx
, GL_INVALID_ENUM
,
3558 "glDiscardFramebufferEXT(target %s)",
3559 _mesa_lookup_enum_by_nr(target
));
3563 if (numAttachments
< 0) {
3564 _mesa_error(ctx
, GL_INVALID_VALUE
,
3565 "glDiscardFramebufferEXT(numAttachments < 0)");
3569 for (i
= 0; i
< numAttachments
; i
++) {
3570 switch (attachments
[i
]) {
3574 if (_mesa_is_user_fbo(fb
))
3577 case GL_COLOR_ATTACHMENT0
:
3578 case GL_DEPTH_ATTACHMENT
:
3579 case GL_STENCIL_ATTACHMENT
:
3580 if (_mesa_is_winsys_fbo(fb
))
3588 if (ctx
->Driver
.DiscardFramebuffer
)
3589 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3594 _mesa_error(ctx
, GL_INVALID_ENUM
,
3595 "glDiscardFramebufferEXT(attachment %s)",
3596 _mesa_lookup_enum_by_nr(attachments
[i
]));