2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * GL_EXT/ARB_framebuffer_object extensions
40 #include "framebuffer.h"
43 #include "renderbuffer.h"
49 /** Set this to 1 to help debug FBO incompleteness problems */
52 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
59 * None of the GL_EXT_framebuffer_object functions are compiled into
66 * When glGenRender/FramebuffersEXT() is called we insert pointers to
67 * these placeholder objects into the hash table.
68 * Later, when the object ID is first bound, we replace the placeholder
69 * with the real frame/renderbuffer.
71 static struct gl_framebuffer DummyFramebuffer
;
72 static struct gl_renderbuffer DummyRenderbuffer
;
74 /* We bind this framebuffer when applications pass a NULL
75 * drawable/surface in make current. */
76 static struct gl_framebuffer IncompleteFramebuffer
;
79 #define IS_CUBE_FACE(TARGET) \
80 ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
81 (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
85 delete_dummy_renderbuffer(struct gl_renderbuffer
*rb
)
91 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
98 _mesa_init_fbobjects(struct gl_context
*ctx
)
100 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
101 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
102 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
103 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
104 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
105 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
108 struct gl_framebuffer
*
109 _mesa_get_incomplete_framebuffer(void)
111 return &IncompleteFramebuffer
;
115 * Helper routine for getting a gl_renderbuffer.
117 struct gl_renderbuffer
*
118 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
120 struct gl_renderbuffer
*rb
;
125 rb
= (struct gl_renderbuffer
*)
126 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
132 * Helper routine for getting a gl_framebuffer.
134 struct gl_framebuffer
*
135 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
137 struct gl_framebuffer
*fb
;
142 fb
= (struct gl_framebuffer
*)
143 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
149 * Mark the given framebuffer as invalid. This will force the
150 * test for framebuffer completeness to be done before the framebuffer
154 invalidate_framebuffer(struct gl_framebuffer
*fb
)
156 fb
->_Status
= 0; /* "indeterminate" */
161 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
162 * gl_renderbuffer_attachment object.
163 * This function is only used for user-created FB objects, not the
164 * default / window-system FB object.
165 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
166 * the depth buffer attachment point.
168 struct gl_renderbuffer_attachment
*
169 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
174 assert(fb
->Name
> 0);
176 switch (attachment
) {
177 case GL_COLOR_ATTACHMENT0_EXT
:
178 case GL_COLOR_ATTACHMENT1_EXT
:
179 case GL_COLOR_ATTACHMENT2_EXT
:
180 case GL_COLOR_ATTACHMENT3_EXT
:
181 case GL_COLOR_ATTACHMENT4_EXT
:
182 case GL_COLOR_ATTACHMENT5_EXT
:
183 case GL_COLOR_ATTACHMENT6_EXT
:
184 case GL_COLOR_ATTACHMENT7_EXT
:
185 case GL_COLOR_ATTACHMENT8_EXT
:
186 case GL_COLOR_ATTACHMENT9_EXT
:
187 case GL_COLOR_ATTACHMENT10_EXT
:
188 case GL_COLOR_ATTACHMENT11_EXT
:
189 case GL_COLOR_ATTACHMENT12_EXT
:
190 case GL_COLOR_ATTACHMENT13_EXT
:
191 case GL_COLOR_ATTACHMENT14_EXT
:
192 case GL_COLOR_ATTACHMENT15_EXT
:
193 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
194 if (i
>= ctx
->Const
.MaxColorAttachments
) {
197 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
198 case GL_DEPTH_STENCIL_ATTACHMENT
:
200 case GL_DEPTH_BUFFER
:
201 /* fall-through / new in GL 3.0 */
202 case GL_DEPTH_ATTACHMENT_EXT
:
203 return &fb
->Attachment
[BUFFER_DEPTH
];
204 case GL_STENCIL_BUFFER
:
205 /* fall-through / new in GL 3.0 */
206 case GL_STENCIL_ATTACHMENT_EXT
:
207 return &fb
->Attachment
[BUFFER_STENCIL
];
215 * As above, but only used for getting attachments of the default /
216 * window-system framebuffer (not user-created framebuffer objects).
218 static struct gl_renderbuffer_attachment
*
219 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
222 assert(fb
->Name
== 0);
224 switch (attachment
) {
226 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
228 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
230 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
232 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
234 if (fb
->Visual
.numAuxBuffers
== 1) {
235 return &fb
->Attachment
[BUFFER_AUX0
];
238 case GL_DEPTH_BUFFER
:
239 /* fall-through / new in GL 3.0 */
240 case GL_DEPTH_ATTACHMENT_EXT
:
241 return &fb
->Attachment
[BUFFER_DEPTH
];
242 case GL_STENCIL_BUFFER
:
243 /* fall-through / new in GL 3.0 */
244 case GL_STENCIL_ATTACHMENT_EXT
:
245 return &fb
->Attachment
[BUFFER_STENCIL
];
254 * Remove any texture or renderbuffer attached to the given attachment
255 * point. Update reference counts, etc.
258 _mesa_remove_attachment(struct gl_context
*ctx
,
259 struct gl_renderbuffer_attachment
*att
)
261 if (att
->Type
== GL_TEXTURE
) {
262 ASSERT(att
->Texture
);
263 if (ctx
->Driver
.FinishRenderTexture
) {
264 /* tell driver that we're done rendering to this texture. */
265 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
267 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
268 ASSERT(!att
->Texture
);
270 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
271 ASSERT(!att
->Texture
);
272 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
273 ASSERT(!att
->Renderbuffer
);
276 att
->Complete
= GL_TRUE
;
281 * Bind a texture object to an attachment point.
282 * The previous binding, if any, will be removed first.
285 _mesa_set_texture_attachment(struct gl_context
*ctx
,
286 struct gl_framebuffer
*fb
,
287 struct gl_renderbuffer_attachment
*att
,
288 struct gl_texture_object
*texObj
,
289 GLenum texTarget
, GLuint level
, GLuint zoffset
)
291 if (att
->Texture
== texObj
) {
292 /* re-attaching same texture */
293 ASSERT(att
->Type
== GL_TEXTURE
);
294 if (ctx
->Driver
.FinishRenderTexture
)
295 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
299 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
300 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
301 _mesa_remove_attachment(ctx
, att
);
302 att
->Type
= GL_TEXTURE
;
303 assert(!att
->Texture
);
304 _mesa_reference_texobj(&att
->Texture
, texObj
);
307 /* always update these fields */
308 att
->TextureLevel
= level
;
309 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
310 att
->Zoffset
= zoffset
;
311 att
->Complete
= GL_FALSE
;
313 if (att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
314 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
317 invalidate_framebuffer(fb
);
322 * Bind a renderbuffer to an attachment point.
323 * The previous binding, if any, will be removed first.
326 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
327 struct gl_renderbuffer_attachment
*att
,
328 struct gl_renderbuffer
*rb
)
330 /* XXX check if re-doing same attachment, exit early */
331 _mesa_remove_attachment(ctx
, att
);
332 att
->Type
= GL_RENDERBUFFER_EXT
;
333 att
->Texture
= NULL
; /* just to be safe */
334 att
->Complete
= GL_FALSE
;
335 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
340 * Fallback for ctx->Driver.FramebufferRenderbuffer()
341 * Attach a renderbuffer object to a framebuffer object.
344 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
345 struct gl_framebuffer
*fb
,
346 GLenum attachment
, struct gl_renderbuffer
*rb
)
348 struct gl_renderbuffer_attachment
*att
;
350 _glthread_LOCK_MUTEX(fb
->Mutex
);
352 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
355 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
356 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
357 /* do stencil attachment here (depth already done above) */
358 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
360 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
364 _mesa_remove_attachment(ctx
, att
);
367 invalidate_framebuffer(fb
);
369 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
377 att_incomplete(const char *msg
)
380 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
391 fbo_incomplete(const char *msg
, int index
)
394 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
403 * Is the given base format a legal format for a color renderbuffer?
406 is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
408 switch (baseFormat
) {
413 case GL_LUMINANCE_ALPHA
:
416 return ctx
->Extensions
.ARB_framebuffer_object
;
419 return ctx
->Extensions
.ARB_texture_rg
;
427 * Is the given base format a legal format for a depth/stencil renderbuffer?
430 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
432 switch (baseFormat
) {
433 case GL_DEPTH_COMPONENT
:
434 case GL_DEPTH_STENCIL_EXT
:
443 * Test if an attachment point is complete and update its Complete field.
444 * \param format if GL_COLOR, this is a color attachment point,
445 * if GL_DEPTH, this is a depth component attachment point,
446 * if GL_STENCIL, this is a stencil component attachment point.
449 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
450 struct gl_renderbuffer_attachment
*att
)
452 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
454 /* assume complete */
455 att
->Complete
= GL_TRUE
;
457 /* Look for reasons why the attachment might be incomplete */
458 if (att
->Type
== GL_TEXTURE
) {
459 const struct gl_texture_object
*texObj
= att
->Texture
;
460 struct gl_texture_image
*texImage
;
464 att_incomplete("no texobj");
465 att
->Complete
= GL_FALSE
;
469 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
471 att_incomplete("no teximage");
472 att
->Complete
= GL_FALSE
;
475 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
476 att_incomplete("teximage width/height=0");
477 printf("texobj = %u\n", texObj
->Name
);
478 printf("level = %d\n", att
->TextureLevel
);
479 att
->Complete
= GL_FALSE
;
482 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
483 att_incomplete("bad z offset");
484 att
->Complete
= GL_FALSE
;
488 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
490 if (format
== GL_COLOR
) {
491 if (!is_legal_color_format(ctx
, baseFormat
)) {
492 att_incomplete("bad format");
493 att
->Complete
= GL_FALSE
;
496 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
497 att_incomplete("compressed internalformat");
498 att
->Complete
= GL_FALSE
;
502 else if (format
== GL_DEPTH
) {
503 if (baseFormat
== GL_DEPTH_COMPONENT
) {
506 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
507 ctx
->Extensions
.ARB_depth_texture
&&
508 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
512 att
->Complete
= GL_FALSE
;
513 att_incomplete("bad depth format");
518 ASSERT(format
== GL_STENCIL
);
519 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
520 ctx
->Extensions
.ARB_depth_texture
&&
521 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
525 /* no such thing as stencil-only textures */
526 att_incomplete("illegal stencil texture");
527 att
->Complete
= GL_FALSE
;
532 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
533 const GLenum baseFormat
=
534 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
536 ASSERT(att
->Renderbuffer
);
537 if (!att
->Renderbuffer
->InternalFormat
||
538 att
->Renderbuffer
->Width
< 1 ||
539 att
->Renderbuffer
->Height
< 1) {
540 att_incomplete("0x0 renderbuffer");
541 att
->Complete
= GL_FALSE
;
544 if (format
== GL_COLOR
) {
545 if (baseFormat
!= GL_RGB
&&
546 baseFormat
!= GL_RGBA
) {
547 att_incomplete("bad renderbuffer color format");
548 att
->Complete
= GL_FALSE
;
552 else if (format
== GL_DEPTH
) {
553 if (baseFormat
== GL_DEPTH_COMPONENT
) {
556 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
557 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
561 att_incomplete("bad renderbuffer depth format");
562 att
->Complete
= GL_FALSE
;
567 assert(format
== GL_STENCIL
);
568 if (baseFormat
== GL_STENCIL_INDEX
) {
571 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
572 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
576 att
->Complete
= GL_FALSE
;
577 att_incomplete("bad renderbuffer stencil format");
583 ASSERT(att
->Type
== GL_NONE
);
591 * Test if the given framebuffer object is complete and update its
592 * Status field with the results.
593 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
594 * driver to make hardware-specific validation/completeness checks.
595 * Also update the framebuffer's Width and Height fields if the
596 * framebuffer is complete.
599 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
600 struct gl_framebuffer
*fb
)
603 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
604 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
605 GLint numSamples
= -1;
609 assert(fb
->Name
!= 0);
615 /* Start at -2 to more easily loop over all attachment points.
620 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
621 struct gl_renderbuffer_attachment
*att
;
623 gl_format mesaFormat
;
626 * XXX for ARB_fbo, only check color buffers that are named by
627 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
630 /* check for attachment completeness
633 att
= &fb
->Attachment
[BUFFER_DEPTH
];
634 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
635 if (!att
->Complete
) {
636 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
637 fbo_incomplete("depth attachment incomplete", -1);
642 att
= &fb
->Attachment
[BUFFER_STENCIL
];
643 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
644 if (!att
->Complete
) {
645 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
646 fbo_incomplete("stencil attachment incomplete", -1);
651 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
652 test_attachment_completeness(ctx
, GL_COLOR
, att
);
653 if (!att
->Complete
) {
654 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
655 fbo_incomplete("color attachment incomplete", i
);
660 /* get width, height, format of the renderbuffer/texture
662 if (att
->Type
== GL_TEXTURE
) {
663 const struct gl_texture_image
*texImg
664 = att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
665 minWidth
= MIN2(minWidth
, texImg
->Width
);
666 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
667 minHeight
= MIN2(minHeight
, texImg
->Height
);
668 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
669 f
= texImg
->_BaseFormat
;
670 mesaFormat
= texImg
->TexFormat
;
672 if (!is_legal_color_format(ctx
, f
) &&
673 !is_legal_depth_format(ctx
, f
)) {
674 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
675 fbo_incomplete("texture attachment incomplete", -1);
679 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
680 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
681 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
682 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
683 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
684 f
= att
->Renderbuffer
->InternalFormat
;
685 mesaFormat
= att
->Renderbuffer
->Format
;
689 assert(att
->Type
== GL_NONE
);
693 if (numSamples
< 0) {
695 numSamples
= att
->Renderbuffer
->NumSamples
;
698 /* check if integer color */
699 fb
->_IntegerColor
= _mesa_is_format_integer(mesaFormat
);
701 /* Error-check width, height, format, samples
703 if (numImages
== 1) {
704 /* save format, num samples */
710 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
711 /* check that width, height, format are same */
712 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
713 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
714 fbo_incomplete("width or height mismatch", -1);
717 /* check that all color buffer have same format */
718 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
719 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
720 fbo_incomplete("format mismatch", -1);
724 if (att
->Renderbuffer
&&
725 att
->Renderbuffer
->NumSamples
!= numSamples
) {
726 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
727 fbo_incomplete("inconsistant number of samples", i
);
735 if (ctx
->API
== API_OPENGL
) {
736 /* Check that all DrawBuffers are present */
737 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
738 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
739 const struct gl_renderbuffer_attachment
*att
740 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
742 if (att
->Type
== GL_NONE
) {
743 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
744 fbo_incomplete("missing drawbuffer", j
);
750 /* Check that the ReadBuffer is present */
751 if (fb
->ColorReadBuffer
!= GL_NONE
) {
752 const struct gl_renderbuffer_attachment
*att
753 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
755 if (att
->Type
== GL_NONE
) {
756 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
757 fbo_incomplete("missing readbuffer", -1);
766 if (numImages
== 0) {
767 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
768 fbo_incomplete("no attachments", -1);
772 /* Provisionally set status = COMPLETE ... */
773 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
775 /* ... but the driver may say the FB is incomplete.
776 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
779 if (ctx
->Driver
.ValidateFramebuffer
) {
780 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
781 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
782 fbo_incomplete("driver marked FBO as incomplete", -1);
786 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
788 * Note that if ARB_framebuffer_object is supported and the attached
789 * renderbuffers/textures are different sizes, the framebuffer
790 * width/height will be set to the smallest width/height.
792 fb
->Width
= minWidth
;
793 fb
->Height
= minHeight
;
795 /* finally, update the visual info for the framebuffer */
796 _mesa_update_framebuffer_visual(fb
);
802 _mesa_IsRenderbufferEXT(GLuint renderbuffer
)
804 GET_CURRENT_CONTEXT(ctx
);
805 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
807 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
808 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
816 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
818 struct gl_renderbuffer
*newRb
;
819 GET_CURRENT_CONTEXT(ctx
);
821 ASSERT_OUTSIDE_BEGIN_END(ctx
);
823 if (target
!= GL_RENDERBUFFER_EXT
) {
824 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
828 /* No need to flush here since the render buffer binding has no
829 * effect on rendering state.
833 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
834 if (newRb
== &DummyRenderbuffer
) {
835 /* ID was reserved, but no real renderbuffer object made yet */
838 else if (!newRb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
839 /* All RB IDs must be Gen'd */
840 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
845 /* create new renderbuffer object */
846 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
848 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
851 ASSERT(newRb
->AllocStorage
);
852 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
853 newRb
->RefCount
= 1; /* referenced by hash table */
860 ASSERT(newRb
!= &DummyRenderbuffer
);
862 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
867 * If the given renderbuffer is anywhere attached to the framebuffer, detach
869 * This is used when a renderbuffer object is deleted.
870 * The spec calls for unbinding.
873 detach_renderbuffer(struct gl_context
*ctx
,
874 struct gl_framebuffer
*fb
,
875 struct gl_renderbuffer
*rb
)
878 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
879 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
880 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
883 invalidate_framebuffer(fb
);
888 _mesa_DeleteRenderbuffersEXT(GLsizei n
, const GLuint
*renderbuffers
)
891 GET_CURRENT_CONTEXT(ctx
);
893 ASSERT_OUTSIDE_BEGIN_END(ctx
);
894 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
896 for (i
= 0; i
< n
; i
++) {
897 if (renderbuffers
[i
] > 0) {
898 struct gl_renderbuffer
*rb
;
899 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
901 /* check if deleting currently bound renderbuffer object */
902 if (rb
== ctx
->CurrentRenderbuffer
) {
904 ASSERT(rb
->RefCount
>= 2);
905 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT
, 0);
908 if (ctx
->DrawBuffer
->Name
) {
909 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
911 if (ctx
->ReadBuffer
->Name
&& ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
912 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
915 /* Remove from hash table immediately, to free the ID.
916 * But the object will not be freed until it's no longer
917 * referenced anywhere else.
919 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
921 if (rb
!= &DummyRenderbuffer
) {
922 /* no longer referenced by hash table */
923 _mesa_reference_renderbuffer(&rb
, NULL
);
932 _mesa_GenRenderbuffersEXT(GLsizei n
, GLuint
*renderbuffers
)
934 GET_CURRENT_CONTEXT(ctx
);
938 ASSERT_OUTSIDE_BEGIN_END(ctx
);
941 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
948 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
950 for (i
= 0; i
< n
; i
++) {
951 GLuint name
= first
+ i
;
952 renderbuffers
[i
] = name
;
953 /* insert dummy placeholder into hash table */
954 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
955 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
956 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
962 * Given an internal format token for a render buffer, return the
963 * corresponding base format.
964 * This is very similar to _mesa_base_tex_format() but the set of valid
965 * internal formats is somewhat different.
967 * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
968 * GL_DEPTH_STENCIL_EXT or zero if error.
970 * XXX in the future when we support red-only and red-green formats
971 * we'll also return GL_RED and GL_RG.
974 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
976 switch (internalFormat
) {
1000 case GL_RGBA16_SNORM
:
1002 case GL_STENCIL_INDEX
:
1003 case GL_STENCIL_INDEX1_EXT
:
1004 case GL_STENCIL_INDEX4_EXT
:
1005 case GL_STENCIL_INDEX8_EXT
:
1006 case GL_STENCIL_INDEX16_EXT
:
1007 return GL_STENCIL_INDEX
;
1008 case GL_DEPTH_COMPONENT
:
1009 case GL_DEPTH_COMPONENT16
:
1010 case GL_DEPTH_COMPONENT24
:
1011 case GL_DEPTH_COMPONENT32
:
1012 return GL_DEPTH_COMPONENT
;
1013 case GL_DEPTH_STENCIL_EXT
:
1014 case GL_DEPTH24_STENCIL8_EXT
:
1015 if (ctx
->Extensions
.EXT_packed_depth_stencil
)
1016 return GL_DEPTH_STENCIL_EXT
;
1019 /* XXX add floating point formats eventually */
1026 /** sentinal value, see below */
1027 #define NO_SAMPLES 1000
1031 * Helper function used by _mesa_RenderbufferStorageEXT() and
1032 * _mesa_RenderbufferStorageMultisample().
1033 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1036 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1037 GLsizei width
, GLsizei height
, GLsizei samples
)
1039 const char *func
= samples
== NO_SAMPLES
?
1040 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1041 struct gl_renderbuffer
*rb
;
1043 GET_CURRENT_CONTEXT(ctx
);
1045 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1047 if (target
!= GL_RENDERBUFFER_EXT
) {
1048 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1052 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1053 if (baseFormat
== 0) {
1054 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat)", func
);
1058 if (width
< 1 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1059 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1063 if (height
< 1 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1064 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1068 if (samples
== NO_SAMPLES
) {
1069 /* NumSamples == 0 indicates non-multisampling */
1072 else if (samples
> (GLsizei
) ctx
->Const
.MaxSamples
) {
1073 /* note: driver may choose to use more samples than what's requested */
1074 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(samples)", func
);
1078 rb
= ctx
->CurrentRenderbuffer
;
1080 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1084 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1086 if (rb
->InternalFormat
== internalFormat
&&
1087 rb
->Width
== (GLuint
) width
&&
1088 rb
->Height
== (GLuint
) height
) {
1089 /* no change in allocation needed */
1093 /* These MUST get set by the AllocStorage func */
1094 rb
->Format
= MESA_FORMAT_NONE
;
1095 rb
->NumSamples
= samples
;
1097 /* Now allocate the storage */
1098 ASSERT(rb
->AllocStorage
);
1099 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1100 /* No error - check/set fields now */
1101 assert(rb
->Format
!= MESA_FORMAT_NONE
);
1102 assert(rb
->Width
== (GLuint
) width
);
1103 assert(rb
->Height
== (GLuint
) height
);
1104 rb
->InternalFormat
= internalFormat
;
1105 rb
->_BaseFormat
= baseFormat
;
1106 assert(rb
->_BaseFormat
!= 0);
1109 /* Probably ran out of memory - clear the fields */
1112 rb
->Format
= MESA_FORMAT_NONE
;
1113 rb
->InternalFormat
= GL_NONE
;
1114 rb
->_BaseFormat
= GL_NONE
;
1119 test_framebuffer_completeness(ctx, fb);
1121 /* XXX if this renderbuffer is attached anywhere, invalidate attachment
1127 #if FEATURE_OES_EGL_image
1129 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1131 struct gl_renderbuffer
*rb
;
1132 GET_CURRENT_CONTEXT(ctx
);
1133 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1135 if (!ctx
->Extensions
.OES_EGL_image
) {
1136 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1137 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1141 if (target
!= GL_RENDERBUFFER
) {
1142 _mesa_error(ctx
, GL_INVALID_ENUM
,
1143 "EGLImageTargetRenderbufferStorageOES");
1147 rb
= ctx
->CurrentRenderbuffer
;
1149 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1150 "EGLImageTargetRenderbufferStorageOES");
1154 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1156 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1162 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1163 * _mesa_GetFramebufferAttachmentParameterivEXT()
1164 * We have to be careful to respect the base format. For example, if a
1165 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1166 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1167 * we need to return zero.
1170 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1173 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1174 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1175 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1176 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1177 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1178 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1179 if (baseFormat
== GL_RGB
|| baseFormat
== GL_RGBA
)
1180 return _mesa_get_format_bits(format
, pname
);
1183 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1184 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1185 if (baseFormat
== GL_RGBA
|| baseFormat
== GL_ALPHA
)
1186 return _mesa_get_format_bits(format
, pname
);
1189 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1190 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1191 if (baseFormat
== GL_DEPTH_COMPONENT
|| baseFormat
== GL_DEPTH_STENCIL
)
1192 return _mesa_get_format_bits(format
, pname
);
1195 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1196 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1197 if (baseFormat
== GL_STENCIL_INDEX
|| baseFormat
== GL_DEPTH_STENCIL
)
1198 return _mesa_get_format_bits(format
, pname
);
1209 _mesa_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1210 GLsizei width
, GLsizei height
)
1212 /* GL_ARB_fbo says calling this function is equivalent to calling
1213 * glRenderbufferStorageMultisample() with samples=0. We pass in
1214 * a token value here just for error reporting purposes.
1216 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1221 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1222 GLenum internalFormat
,
1223 GLsizei width
, GLsizei height
)
1225 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1230 * OpenGL ES version of glRenderBufferStorage.
1233 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1234 GLsizei width
, GLsizei height
)
1236 switch (internalFormat
) {
1238 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1239 /* choose a closest format */
1240 internalFormat
= GL_RGB5
;
1246 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1251 _mesa_GetRenderbufferParameterivEXT(GLenum target
, GLenum pname
, GLint
*params
)
1253 struct gl_renderbuffer
*rb
;
1254 GET_CURRENT_CONTEXT(ctx
);
1256 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1258 if (target
!= GL_RENDERBUFFER_EXT
) {
1259 _mesa_error(ctx
, GL_INVALID_ENUM
,
1260 "glGetRenderbufferParameterivEXT(target)");
1264 rb
= ctx
->CurrentRenderbuffer
;
1266 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1267 "glGetRenderbufferParameterivEXT");
1271 /* No need to flush here since we're just quering state which is
1272 * not effected by rendering.
1276 case GL_RENDERBUFFER_WIDTH_EXT
:
1277 *params
= rb
->Width
;
1279 case GL_RENDERBUFFER_HEIGHT_EXT
:
1280 *params
= rb
->Height
;
1282 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1283 *params
= rb
->InternalFormat
;
1285 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1286 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1287 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1288 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1289 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1290 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1291 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1293 case GL_RENDERBUFFER_SAMPLES
:
1294 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1295 *params
= rb
->NumSamples
;
1300 _mesa_error(ctx
, GL_INVALID_ENUM
,
1301 "glGetRenderbufferParameterivEXT(target)");
1307 GLboolean GLAPIENTRY
1308 _mesa_IsFramebufferEXT(GLuint framebuffer
)
1310 GET_CURRENT_CONTEXT(ctx
);
1311 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1313 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1314 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1322 * Check if any of the attachments of the given framebuffer are textures
1323 * (render to texture). Call ctx->Driver.RenderTexture() for such
1327 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1330 ASSERT(ctx
->Driver
.RenderTexture
);
1333 return; /* can't render to texture with winsys framebuffers */
1335 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1336 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1337 struct gl_texture_object
*texObj
= att
->Texture
;
1339 && texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
1340 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1347 * Examine all the framebuffer's attachments to see if any are textures.
1348 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1349 * notify the device driver that the texture image may have changed.
1352 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1355 return; /* can't render to texture with winsys framebuffers */
1357 if (ctx
->Driver
.FinishRenderTexture
) {
1359 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1360 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1361 if (att
->Texture
&& att
->Renderbuffer
) {
1362 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1370 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
1372 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1373 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1374 GLboolean bindReadBuf
, bindDrawBuf
;
1375 GET_CURRENT_CONTEXT(ctx
);
1378 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1379 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1380 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1384 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1386 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1387 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1388 "glBindFramebufferEXT(unsupported)");
1393 #if FEATURE_EXT_framebuffer_blit
1394 case GL_DRAW_FRAMEBUFFER_EXT
:
1395 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1396 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1399 bindDrawBuf
= GL_TRUE
;
1400 bindReadBuf
= GL_FALSE
;
1402 case GL_READ_FRAMEBUFFER_EXT
:
1403 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1404 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1407 bindDrawBuf
= GL_FALSE
;
1408 bindReadBuf
= GL_TRUE
;
1411 case GL_FRAMEBUFFER_EXT
:
1412 bindDrawBuf
= GL_TRUE
;
1413 bindReadBuf
= GL_TRUE
;
1416 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1421 /* Binding a user-created framebuffer object */
1422 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1423 if (newDrawFb
== &DummyFramebuffer
) {
1424 /* ID was reserved, but no real framebuffer object made yet */
1427 else if (!newDrawFb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
1428 /* All FBO IDs must be Gen'd */
1429 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1434 /* create new framebuffer object */
1435 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1437 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1440 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1442 newReadFb
= newDrawFb
;
1445 /* Binding the window system framebuffer (which was originally set
1446 * with MakeCurrent).
1448 newDrawFb
= ctx
->WinSysDrawBuffer
;
1449 newReadFb
= ctx
->WinSysReadBuffer
;
1453 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1455 /* save pointers to current/old framebuffers */
1456 oldDrawFb
= ctx
->DrawBuffer
;
1457 oldReadFb
= ctx
->ReadBuffer
;
1459 /* check if really changing bindings */
1460 if (oldDrawFb
== newDrawFb
)
1461 bindDrawBuf
= GL_FALSE
;
1462 if (oldReadFb
== newReadFb
)
1463 bindReadBuf
= GL_FALSE
;
1466 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1468 * We also check if we're beginning and/or ending render-to-texture.
1469 * When a framebuffer with texture attachments is unbound, call
1470 * ctx->Driver.FinishRenderTexture().
1471 * When a framebuffer with texture attachments is bound, call
1472 * ctx->Driver.RenderTexture().
1474 * Note that if the ReadBuffer has texture attachments we don't consider
1475 * that a render-to-texture case.
1478 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1480 /* check if old readbuffer was render-to-texture */
1481 check_end_texture_render(ctx
, oldReadFb
);
1483 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1487 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1489 /* check if old read/draw buffers were render-to-texture */
1491 check_end_texture_render(ctx
, oldReadFb
);
1493 if (oldDrawFb
!= oldReadFb
)
1494 check_end_texture_render(ctx
, oldDrawFb
);
1496 /* check if newly bound framebuffer has any texture attachments */
1497 check_begin_texture_render(ctx
, newDrawFb
);
1499 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1502 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1503 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1509 _mesa_DeleteFramebuffersEXT(GLsizei n
, const GLuint
*framebuffers
)
1512 GET_CURRENT_CONTEXT(ctx
);
1514 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1515 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1517 for (i
= 0; i
< n
; i
++) {
1518 if (framebuffers
[i
] > 0) {
1519 struct gl_framebuffer
*fb
;
1520 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1522 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1524 /* check if deleting currently bound framebuffer object */
1525 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1526 /* separate draw/read binding points */
1527 if (fb
== ctx
->DrawBuffer
) {
1529 ASSERT(fb
->RefCount
>= 2);
1530 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1532 if (fb
== ctx
->ReadBuffer
) {
1534 ASSERT(fb
->RefCount
>= 2);
1535 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT
, 0);
1539 /* only one binding point for read/draw buffers */
1540 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1542 ASSERT(fb
->RefCount
>= 2);
1543 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT
, 0);
1547 /* remove from hash table immediately, to free the ID */
1548 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1550 if (fb
!= &DummyFramebuffer
) {
1551 /* But the object will not be freed until it's no longer
1552 * bound in any context.
1554 _mesa_reference_framebuffer(&fb
, NULL
);
1563 _mesa_GenFramebuffersEXT(GLsizei n
, GLuint
*framebuffers
)
1565 GET_CURRENT_CONTEXT(ctx
);
1569 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1572 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
1579 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
1581 for (i
= 0; i
< n
; i
++) {
1582 GLuint name
= first
+ i
;
1583 framebuffers
[i
] = name
;
1584 /* insert dummy placeholder into hash table */
1585 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1586 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
1587 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1594 _mesa_CheckFramebufferStatusEXT(GLenum target
)
1596 struct gl_framebuffer
*buffer
;
1597 GET_CURRENT_CONTEXT(ctx
);
1599 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1602 #if FEATURE_EXT_framebuffer_blit
1603 case GL_DRAW_FRAMEBUFFER_EXT
:
1604 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1605 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1608 buffer
= ctx
->DrawBuffer
;
1610 case GL_READ_FRAMEBUFFER_EXT
:
1611 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1612 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1615 buffer
= ctx
->ReadBuffer
;
1618 case GL_FRAMEBUFFER_EXT
:
1619 buffer
= ctx
->DrawBuffer
;
1622 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1623 return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */
1626 if (buffer
->Name
== 0) {
1627 /* The window system / default framebuffer is always complete */
1628 return GL_FRAMEBUFFER_COMPLETE_EXT
;
1631 /* No need to flush here */
1633 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
1634 _mesa_test_framebuffer_completeness(ctx
, buffer
);
1637 return buffer
->_Status
;
1643 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1646 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
1647 GLenum attachment
, GLenum textarget
, GLuint texture
,
1648 GLint level
, GLint zoffset
)
1650 struct gl_renderbuffer_attachment
*att
;
1651 struct gl_texture_object
*texObj
= NULL
;
1652 struct gl_framebuffer
*fb
;
1653 GLboolean error
= GL_FALSE
;
1655 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1658 case GL_READ_FRAMEBUFFER_EXT
:
1659 error
= !ctx
->Extensions
.EXT_framebuffer_blit
;
1660 fb
= ctx
->ReadBuffer
;
1662 case GL_DRAW_FRAMEBUFFER_EXT
:
1663 error
= !ctx
->Extensions
.EXT_framebuffer_blit
;
1665 case GL_FRAMEBUFFER_EXT
:
1666 fb
= ctx
->DrawBuffer
;
1673 _mesa_error(ctx
, GL_INVALID_ENUM
,
1674 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
1680 /* check framebuffer binding */
1681 if (fb
->Name
== 0) {
1682 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1683 "glFramebufferTexture%sEXT", caller
);
1688 /* The textarget, level, and zoffset parameters are only validated if
1689 * texture is non-zero.
1692 GLboolean err
= GL_TRUE
;
1694 texObj
= _mesa_lookup_texture(ctx
, texture
);
1695 if (texObj
!= NULL
) {
1696 if (textarget
== 0) {
1697 /* XXX what's the purpose of this? */
1698 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
1699 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
1700 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
);
1703 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
1704 ? !IS_CUBE_FACE(textarget
)
1705 : (texObj
->Target
!= textarget
);
1709 /* can't render to a non-existant texture */
1710 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1711 "glFramebufferTexture%sEXT(non existant texture)",
1717 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1718 "glFramebufferTexture%sEXT(texture target mismatch)",
1723 if (texObj
->Target
== GL_TEXTURE_3D
) {
1724 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
1725 if (zoffset
< 0 || zoffset
>= maxSize
) {
1726 _mesa_error(ctx
, GL_INVALID_VALUE
,
1727 "glFramebufferTexture%sEXT(zoffset)", caller
);
1731 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
1732 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
)) {
1733 if (zoffset
< 0 || zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
1734 _mesa_error(ctx
, GL_INVALID_VALUE
,
1735 "glFramebufferTexture%sEXT(layer)", caller
);
1741 (level
>= _mesa_max_texture_levels(ctx
, texObj
->Target
))) {
1742 _mesa_error(ctx
, GL_INVALID_VALUE
,
1743 "glFramebufferTexture%sEXT(level)", caller
);
1748 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1750 _mesa_error(ctx
, GL_INVALID_ENUM
,
1751 "glFramebufferTexture%sEXT(attachment)", caller
);
1755 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1757 _glthread_LOCK_MUTEX(fb
->Mutex
);
1759 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
1761 /* Set the render-to-texture flag. We'll check this flag in
1762 * glTexImage() and friends to determine if we need to revalidate
1763 * any FBOs that might be rendering into this texture.
1764 * This flag never gets cleared since it's non-trivial to determine
1765 * when all FBOs might be done rendering to this texture. That's OK
1766 * though since it's uncommon to render to a texture then repeatedly
1767 * call glTexImage() to change images in the texture.
1769 texObj
->_RenderToTexture
= GL_TRUE
;
1772 _mesa_remove_attachment(ctx
, att
);
1775 invalidate_framebuffer(fb
);
1777 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
1783 _mesa_FramebufferTexture1DEXT(GLenum target
, GLenum attachment
,
1784 GLenum textarget
, GLuint texture
, GLint level
)
1786 GET_CURRENT_CONTEXT(ctx
);
1788 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_1D
)) {
1789 _mesa_error(ctx
, GL_INVALID_ENUM
,
1790 "glFramebufferTexture1DEXT(textarget)");
1794 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
1800 _mesa_FramebufferTexture2DEXT(GLenum target
, GLenum attachment
,
1801 GLenum textarget
, GLuint texture
, GLint level
)
1803 GET_CURRENT_CONTEXT(ctx
);
1805 if ((texture
!= 0) &&
1806 (textarget
!= GL_TEXTURE_2D
) &&
1807 (textarget
!= GL_TEXTURE_RECTANGLE_ARB
) &&
1808 (!IS_CUBE_FACE(textarget
))) {
1809 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1810 "glFramebufferTexture2DEXT(textarget=0x%x)", textarget
);
1814 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
1820 _mesa_FramebufferTexture3DEXT(GLenum target
, GLenum attachment
,
1821 GLenum textarget
, GLuint texture
,
1822 GLint level
, GLint zoffset
)
1824 GET_CURRENT_CONTEXT(ctx
);
1826 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
1827 _mesa_error(ctx
, GL_INVALID_ENUM
,
1828 "glFramebufferTexture3DEXT(textarget)");
1832 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
1838 _mesa_FramebufferTextureLayerEXT(GLenum target
, GLenum attachment
,
1839 GLuint texture
, GLint level
, GLint layer
)
1841 GET_CURRENT_CONTEXT(ctx
);
1843 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
1849 _mesa_FramebufferRenderbufferEXT(GLenum target
, GLenum attachment
,
1850 GLenum renderbufferTarget
,
1851 GLuint renderbuffer
)
1853 struct gl_renderbuffer_attachment
*att
;
1854 struct gl_framebuffer
*fb
;
1855 struct gl_renderbuffer
*rb
;
1856 GET_CURRENT_CONTEXT(ctx
);
1858 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1861 #if FEATURE_EXT_framebuffer_blit
1862 case GL_DRAW_FRAMEBUFFER_EXT
:
1863 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1864 _mesa_error(ctx
, GL_INVALID_ENUM
,
1865 "glFramebufferRenderbufferEXT(target)");
1868 fb
= ctx
->DrawBuffer
;
1870 case GL_READ_FRAMEBUFFER_EXT
:
1871 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1872 _mesa_error(ctx
, GL_INVALID_ENUM
,
1873 "glFramebufferRenderbufferEXT(target)");
1876 fb
= ctx
->ReadBuffer
;
1879 case GL_FRAMEBUFFER_EXT
:
1880 fb
= ctx
->DrawBuffer
;
1883 _mesa_error(ctx
, GL_INVALID_ENUM
,
1884 "glFramebufferRenderbufferEXT(target)");
1888 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
1889 _mesa_error(ctx
, GL_INVALID_ENUM
,
1890 "glFramebufferRenderbufferEXT(renderbufferTarget)");
1894 if (fb
->Name
== 0) {
1895 /* Can't attach new renderbuffers to a window system framebuffer */
1896 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
1900 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1902 _mesa_error(ctx
, GL_INVALID_ENUM
,
1903 "glFramebufferRenderbufferEXT(invalid attachment %s)",
1904 _mesa_lookup_enum_by_nr(attachment
));
1909 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1911 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1912 "glFramebufferRenderbufferEXT(non-existant"
1913 " renderbuffer %u)", renderbuffer
);
1918 /* remove renderbuffer attachment */
1922 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
1923 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
1924 /* make sure the renderbuffer is a depth/stencil format */
1925 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
1926 if (baseFormat
!= GL_DEPTH_STENCIL
) {
1927 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1928 "glFramebufferRenderbufferEXT(renderbuffer"
1929 " is not DEPTH_STENCIL format)");
1935 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1937 assert(ctx
->Driver
.FramebufferRenderbuffer
);
1938 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
1940 /* Some subsequent GL commands may depend on the framebuffer's visual
1941 * after the binding is updated. Update visual info now.
1943 _mesa_update_framebuffer_visual(fb
);
1948 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target
, GLenum attachment
,
1949 GLenum pname
, GLint
*params
)
1951 const struct gl_renderbuffer_attachment
*att
;
1952 struct gl_framebuffer
*buffer
;
1953 GET_CURRENT_CONTEXT(ctx
);
1955 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1958 #if FEATURE_EXT_framebuffer_blit
1959 case GL_DRAW_FRAMEBUFFER_EXT
:
1960 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1961 _mesa_error(ctx
, GL_INVALID_ENUM
,
1962 "glGetFramebufferAttachmentParameterivEXT(target)");
1965 buffer
= ctx
->DrawBuffer
;
1967 case GL_READ_FRAMEBUFFER_EXT
:
1968 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1969 _mesa_error(ctx
, GL_INVALID_ENUM
,
1970 "glGetFramebufferAttachmentParameterivEXT(target)");
1973 buffer
= ctx
->ReadBuffer
;
1976 case GL_FRAMEBUFFER_EXT
:
1977 buffer
= ctx
->DrawBuffer
;
1980 _mesa_error(ctx
, GL_INVALID_ENUM
,
1981 "glGetFramebufferAttachmentParameterivEXT(target)");
1985 if (buffer
->Name
== 0) {
1986 /* the default / window-system FBO */
1987 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
1990 /* user-created framebuffer FBO */
1991 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
1995 _mesa_error(ctx
, GL_INVALID_ENUM
,
1996 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2000 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2001 /* the depth and stencil attachments must point to the same buffer */
2002 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2003 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2004 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2005 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2006 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2007 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2008 " attachments differ)");
2013 /* No need to flush here */
2016 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2017 *params
= att
->Type
;
2019 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2020 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2021 *params
= att
->Renderbuffer
->Name
;
2023 else if (att
->Type
== GL_TEXTURE
) {
2024 *params
= att
->Texture
->Name
;
2027 _mesa_error(ctx
, GL_INVALID_ENUM
,
2028 "glGetFramebufferAttachmentParameterivEXT(pname)");
2031 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2032 if (att
->Type
== GL_TEXTURE
) {
2033 *params
= att
->TextureLevel
;
2036 _mesa_error(ctx
, GL_INVALID_ENUM
,
2037 "glGetFramebufferAttachmentParameterivEXT(pname)");
2040 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2041 if (att
->Type
== GL_TEXTURE
) {
2042 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2043 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2050 _mesa_error(ctx
, GL_INVALID_ENUM
,
2051 "glGetFramebufferAttachmentParameterivEXT(pname)");
2054 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2055 if (att
->Type
== GL_TEXTURE
) {
2056 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2057 *params
= att
->Zoffset
;
2064 _mesa_error(ctx
, GL_INVALID_ENUM
,
2065 "glGetFramebufferAttachmentParameterivEXT(pname)");
2068 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2069 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2070 _mesa_error(ctx
, GL_INVALID_ENUM
,
2071 "glGetFramebufferAttachmentParameterivEXT(pname)");
2074 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2077 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2078 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2079 _mesa_error(ctx
, GL_INVALID_ENUM
,
2080 "glGetFramebufferAttachmentParameterivEXT(pname)");
2084 gl_format format
= att
->Renderbuffer
->Format
;
2085 if (format
== MESA_FORMAT_CI8
|| format
== MESA_FORMAT_S8
) {
2090 *params
= _mesa_get_format_datatype(format
);
2094 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2095 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2096 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2097 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2098 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2099 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2100 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2101 _mesa_error(ctx
, GL_INVALID_ENUM
,
2102 "glGetFramebufferAttachmentParameterivEXT(pname)");
2104 else if (att
->Texture
) {
2105 const struct gl_texture_image
*texImage
=
2106 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2109 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2110 texImage
->TexFormat
);
2116 else if (att
->Renderbuffer
) {
2117 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2118 att
->Renderbuffer
->Format
);
2125 _mesa_error(ctx
, GL_INVALID_ENUM
,
2126 "glGetFramebufferAttachmentParameterivEXT(pname)");
2133 _mesa_GenerateMipmapEXT(GLenum target
)
2135 struct gl_texture_object
*texObj
;
2136 GET_CURRENT_CONTEXT(ctx
);
2138 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2139 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2145 case GL_TEXTURE_CUBE_MAP
:
2146 /* OK, legal value */
2149 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target)");
2153 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2155 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2160 _mesa_lock_texture(ctx
, texObj
);
2161 if (target
== GL_TEXTURE_CUBE_MAP
) {
2163 for (face
= 0; face
< 6; face
++)
2164 ctx
->Driver
.GenerateMipmap(ctx
,
2165 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2169 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2171 _mesa_unlock_texture(ctx
, texObj
);
2175 #if FEATURE_EXT_framebuffer_blit
2177 static const struct gl_renderbuffer_attachment
*
2178 find_attachment(const struct gl_framebuffer
*fb
, const struct gl_renderbuffer
*rb
)
2181 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2182 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2183 return &fb
->Attachment
[i
];
2191 * Blit rectangular region, optionally from one framebuffer to another.
2193 * Note, if the src buffer is multisampled and the dest is not, this is
2194 * when the samples must be resolved to a single color.
2197 _mesa_BlitFramebufferEXT(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2198 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2199 GLbitfield mask
, GLenum filter
)
2201 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2202 GL_DEPTH_BUFFER_BIT
|
2203 GL_STENCIL_BUFFER_BIT
);
2204 const struct gl_framebuffer
*readFb
, *drawFb
;
2205 const struct gl_renderbuffer
*colorReadRb
, *colorDrawRb
;
2206 GET_CURRENT_CONTEXT(ctx
);
2208 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2209 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2211 if (ctx
->NewState
) {
2212 _mesa_update_state(ctx
);
2215 readFb
= ctx
->ReadBuffer
;
2216 drawFb
= ctx
->DrawBuffer
;
2218 if (!readFb
|| !drawFb
) {
2219 /* This will normally never happen but someday we may want to
2220 * support MakeCurrent() with no drawables.
2225 /* check for complete framebuffers */
2226 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2227 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2228 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2229 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2233 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2234 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2238 if (mask
& ~legalMaskBits
) {
2239 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2243 /* depth/stencil must be blitted with nearest filtering */
2244 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2245 && filter
!= GL_NEAREST
) {
2246 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2247 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
2251 /* get color read/draw renderbuffers */
2252 if (mask
& GL_COLOR_BUFFER_BIT
) {
2253 colorReadRb
= readFb
->_ColorReadBuffer
;
2254 colorDrawRb
= drawFb
->_ColorDrawBuffers
[0];
2257 colorReadRb
= colorDrawRb
= NULL
;
2260 if (mask
& GL_STENCIL_BUFFER_BIT
) {
2261 struct gl_renderbuffer
*readRb
= readFb
->_StencilBuffer
;
2262 struct gl_renderbuffer
*drawRb
= drawFb
->_StencilBuffer
;
2265 _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
2266 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
2267 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2268 "glBlitFramebufferEXT(stencil buffer size mismatch");
2273 if (mask
& GL_DEPTH_BUFFER_BIT
) {
2274 struct gl_renderbuffer
*readRb
= readFb
->_DepthBuffer
;
2275 struct gl_renderbuffer
*drawRb
= drawFb
->_DepthBuffer
;
2278 _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
2279 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) {
2280 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2281 "glBlitFramebufferEXT(depth buffer size mismatch");
2286 if (readFb
->Visual
.samples
> 0 &&
2287 drawFb
->Visual
.samples
> 0 &&
2288 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
2289 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2290 "glBlitFramebufferEXT(mismatched samples");
2294 /* extra checks for multisample copies... */
2295 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
2296 /* src and dest region sizes must be the same */
2297 if (srcX1
- srcX0
!= dstX1
- dstX0
||
2298 srcY1
- srcY0
!= dstY1
- dstY0
) {
2299 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2300 "glBlitFramebufferEXT(bad src/dst multisample region sizes");
2304 /* color formats must match */
2307 colorReadRb
->Format
!= colorDrawRb
->Format
) {
2308 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2309 "glBlitFramebufferEXT(bad src/dst multisample pixel formats");
2314 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
2315 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
2321 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2323 srcX0
, srcY0
, srcX1
, srcY1
,
2324 dstX0
, dstY0
, dstX1
, dstY1
,
2327 const struct gl_renderbuffer_attachment
*att
;
2329 att
= find_attachment(readFb
, colorReadRb
);
2330 printf(" Src FBO %u RB %u (%dx%d) ",
2331 readFb
->Name
, colorReadRb
->Name
,
2332 colorReadRb
->Width
, colorReadRb
->Height
);
2333 if (att
&& att
->Texture
) {
2334 printf("Tex %u tgt 0x%x level %u face %u",
2336 att
->Texture
->Target
,
2342 att
= find_attachment(drawFb
, colorDrawRb
);
2343 printf(" Dst FBO %u RB %u (%dx%d) ",
2344 drawFb
->Name
, colorDrawRb
->Name
,
2345 colorDrawRb
->Width
, colorDrawRb
->Height
);
2346 if (att
&& att
->Texture
) {
2347 printf("Tex %u tgt 0x%x level %u face %u",
2349 att
->Texture
->Target
,
2357 ASSERT(ctx
->Driver
.BlitFramebuffer
);
2358 ctx
->Driver
.BlitFramebuffer(ctx
,
2359 srcX0
, srcY0
, srcX1
, srcY1
,
2360 dstX0
, dstY0
, dstX1
, dstY1
,
2363 #endif /* FEATURE_EXT_framebuffer_blit */
2365 #if FEATURE_ARB_geometry_shader4
2367 _mesa_FramebufferTextureARB(GLenum target
, GLenum attachment
,
2368 GLuint texture
, GLint level
)
2370 GET_CURRENT_CONTEXT(ctx
);
2371 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2372 "glFramebufferTextureARB "
2373 "not implemented!");
2377 _mesa_FramebufferTextureFaceARB(GLenum target
, GLenum attachment
,
2378 GLuint texture
, GLint level
, GLenum face
)
2380 GET_CURRENT_CONTEXT(ctx
);
2381 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2382 "glFramebufferTextureFaceARB "
2383 "not implemented!");
2385 #endif /* FEATURE_ARB_geometry_shader4 */