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 "mfeatures.h"
45 #include "renderbuffer.h"
51 /** Set this to 1 to help debug FBO incompleteness problems */
54 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
61 * None of the GL_EXT_framebuffer_object functions are compiled into
68 * When glGenRender/FramebuffersEXT() is called we insert pointers to
69 * these placeholder objects into the hash table.
70 * Later, when the object ID is first bound, we replace the placeholder
71 * with the real frame/renderbuffer.
73 static struct gl_framebuffer DummyFramebuffer
;
74 static struct gl_renderbuffer DummyRenderbuffer
;
76 /* We bind this framebuffer when applications pass a NULL
77 * drawable/surface in make current. */
78 static struct gl_framebuffer IncompleteFramebuffer
;
81 #define IS_CUBE_FACE(TARGET) \
82 ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
83 (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
87 delete_dummy_renderbuffer(struct gl_renderbuffer
*rb
)
93 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
100 _mesa_init_fbobjects(struct gl_context
*ctx
)
102 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
103 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
104 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
105 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
106 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
107 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
110 struct gl_framebuffer
*
111 _mesa_get_incomplete_framebuffer(void)
113 return &IncompleteFramebuffer
;
117 * Helper routine for getting a gl_renderbuffer.
119 struct gl_renderbuffer
*
120 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
122 struct gl_renderbuffer
*rb
;
127 rb
= (struct gl_renderbuffer
*)
128 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
134 * Helper routine for getting a gl_framebuffer.
136 struct gl_framebuffer
*
137 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
139 struct gl_framebuffer
*fb
;
144 fb
= (struct gl_framebuffer
*)
145 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
151 * Mark the given framebuffer as invalid. This will force the
152 * test for framebuffer completeness to be done before the framebuffer
156 invalidate_framebuffer(struct gl_framebuffer
*fb
)
158 fb
->_Status
= 0; /* "indeterminate" */
163 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
164 * gl_renderbuffer_attachment object.
165 * This function is only used for user-created FB objects, not the
166 * default / window-system FB object.
167 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
168 * the depth buffer attachment point.
170 struct gl_renderbuffer_attachment
*
171 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
176 assert(fb
->Name
> 0);
178 switch (attachment
) {
179 case GL_COLOR_ATTACHMENT0_EXT
:
180 case GL_COLOR_ATTACHMENT1_EXT
:
181 case GL_COLOR_ATTACHMENT2_EXT
:
182 case GL_COLOR_ATTACHMENT3_EXT
:
183 case GL_COLOR_ATTACHMENT4_EXT
:
184 case GL_COLOR_ATTACHMENT5_EXT
:
185 case GL_COLOR_ATTACHMENT6_EXT
:
186 case GL_COLOR_ATTACHMENT7_EXT
:
187 case GL_COLOR_ATTACHMENT8_EXT
:
188 case GL_COLOR_ATTACHMENT9_EXT
:
189 case GL_COLOR_ATTACHMENT10_EXT
:
190 case GL_COLOR_ATTACHMENT11_EXT
:
191 case GL_COLOR_ATTACHMENT12_EXT
:
192 case GL_COLOR_ATTACHMENT13_EXT
:
193 case GL_COLOR_ATTACHMENT14_EXT
:
194 case GL_COLOR_ATTACHMENT15_EXT
:
195 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
196 if (i
>= ctx
->Const
.MaxColorAttachments
) {
199 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
200 case GL_DEPTH_STENCIL_ATTACHMENT
:
202 case GL_DEPTH_BUFFER
:
203 /* fall-through / new in GL 3.0 */
204 case GL_DEPTH_ATTACHMENT_EXT
:
205 return &fb
->Attachment
[BUFFER_DEPTH
];
206 case GL_STENCIL_BUFFER
:
207 /* fall-through / new in GL 3.0 */
208 case GL_STENCIL_ATTACHMENT_EXT
:
209 return &fb
->Attachment
[BUFFER_STENCIL
];
217 * As above, but only used for getting attachments of the default /
218 * window-system framebuffer (not user-created framebuffer objects).
220 static struct gl_renderbuffer_attachment
*
221 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
224 assert(fb
->Name
== 0);
226 switch (attachment
) {
228 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
230 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
232 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
234 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
236 if (fb
->Visual
.numAuxBuffers
== 1) {
237 return &fb
->Attachment
[BUFFER_AUX0
];
240 case GL_DEPTH_BUFFER
:
241 /* fall-through / new in GL 3.0 */
242 case GL_DEPTH_ATTACHMENT_EXT
:
243 return &fb
->Attachment
[BUFFER_DEPTH
];
244 case GL_STENCIL_BUFFER
:
245 /* fall-through / new in GL 3.0 */
246 case GL_STENCIL_ATTACHMENT_EXT
:
247 return &fb
->Attachment
[BUFFER_STENCIL
];
256 * Remove any texture or renderbuffer attached to the given attachment
257 * point. Update reference counts, etc.
260 _mesa_remove_attachment(struct gl_context
*ctx
,
261 struct gl_renderbuffer_attachment
*att
)
263 if (att
->Type
== GL_TEXTURE
) {
264 ASSERT(att
->Texture
);
265 if (ctx
->Driver
.FinishRenderTexture
) {
266 /* tell driver that we're done rendering to this texture. */
267 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
269 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
270 ASSERT(!att
->Texture
);
272 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
273 ASSERT(!att
->Texture
);
274 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
275 ASSERT(!att
->Renderbuffer
);
278 att
->Complete
= GL_TRUE
;
283 * Bind a texture object to an attachment point.
284 * The previous binding, if any, will be removed first.
287 _mesa_set_texture_attachment(struct gl_context
*ctx
,
288 struct gl_framebuffer
*fb
,
289 struct gl_renderbuffer_attachment
*att
,
290 struct gl_texture_object
*texObj
,
291 GLenum texTarget
, GLuint level
, GLuint zoffset
)
293 if (att
->Texture
== texObj
) {
294 /* re-attaching same texture */
295 ASSERT(att
->Type
== GL_TEXTURE
);
296 if (ctx
->Driver
.FinishRenderTexture
)
297 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
301 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
302 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
303 _mesa_remove_attachment(ctx
, att
);
304 att
->Type
= GL_TEXTURE
;
305 assert(!att
->Texture
);
306 _mesa_reference_texobj(&att
->Texture
, texObj
);
309 /* always update these fields */
310 att
->TextureLevel
= level
;
311 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
312 att
->Zoffset
= zoffset
;
313 att
->Complete
= GL_FALSE
;
315 if (att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
316 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
319 invalidate_framebuffer(fb
);
324 * Bind a renderbuffer to an attachment point.
325 * The previous binding, if any, will be removed first.
328 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
329 struct gl_renderbuffer_attachment
*att
,
330 struct gl_renderbuffer
*rb
)
332 /* XXX check if re-doing same attachment, exit early */
333 _mesa_remove_attachment(ctx
, att
);
334 att
->Type
= GL_RENDERBUFFER_EXT
;
335 att
->Texture
= NULL
; /* just to be safe */
336 att
->Complete
= GL_FALSE
;
337 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
342 * Fallback for ctx->Driver.FramebufferRenderbuffer()
343 * Attach a renderbuffer object to a framebuffer object.
346 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
347 struct gl_framebuffer
*fb
,
348 GLenum attachment
, struct gl_renderbuffer
*rb
)
350 struct gl_renderbuffer_attachment
*att
;
352 _glthread_LOCK_MUTEX(fb
->Mutex
);
354 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
357 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
358 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
359 /* do stencil attachment here (depth already done above) */
360 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
362 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
366 _mesa_remove_attachment(ctx
, att
);
369 invalidate_framebuffer(fb
);
371 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
379 att_incomplete(const char *msg
)
382 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
393 fbo_incomplete(const char *msg
, int index
)
396 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
405 * Is the given base format a legal format for a color renderbuffer?
408 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
410 switch (baseFormat
) {
415 case GL_LUMINANCE_ALPHA
:
418 return ctx
->Extensions
.ARB_framebuffer_object
;
421 return ctx
->Extensions
.ARB_texture_rg
;
429 * Is the given base format a legal format for a depth/stencil renderbuffer?
432 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
434 switch (baseFormat
) {
435 case GL_DEPTH_COMPONENT
:
436 case GL_DEPTH_STENCIL_EXT
:
445 * Test if an attachment point is complete and update its Complete field.
446 * \param format if GL_COLOR, this is a color attachment point,
447 * if GL_DEPTH, this is a depth component attachment point,
448 * if GL_STENCIL, this is a stencil component attachment point.
451 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
452 struct gl_renderbuffer_attachment
*att
)
454 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
456 /* assume complete */
457 att
->Complete
= GL_TRUE
;
459 /* Look for reasons why the attachment might be incomplete */
460 if (att
->Type
== GL_TEXTURE
) {
461 const struct gl_texture_object
*texObj
= att
->Texture
;
462 struct gl_texture_image
*texImage
;
466 att_incomplete("no texobj");
467 att
->Complete
= GL_FALSE
;
471 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
473 att_incomplete("no teximage");
474 att
->Complete
= GL_FALSE
;
477 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
478 att_incomplete("teximage width/height=0");
479 printf("texobj = %u\n", texObj
->Name
);
480 printf("level = %d\n", att
->TextureLevel
);
481 att
->Complete
= GL_FALSE
;
484 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
485 att_incomplete("bad z offset");
486 att
->Complete
= GL_FALSE
;
490 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
492 if (format
== GL_COLOR
) {
493 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
494 att_incomplete("bad format");
495 att
->Complete
= GL_FALSE
;
498 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
499 att_incomplete("compressed internalformat");
500 att
->Complete
= GL_FALSE
;
504 else if (format
== GL_DEPTH
) {
505 if (baseFormat
== GL_DEPTH_COMPONENT
) {
508 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
509 ctx
->Extensions
.ARB_depth_texture
&&
510 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
514 att
->Complete
= GL_FALSE
;
515 att_incomplete("bad depth format");
520 ASSERT(format
== GL_STENCIL
);
521 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
522 ctx
->Extensions
.ARB_depth_texture
&&
523 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
527 /* no such thing as stencil-only textures */
528 att_incomplete("illegal stencil texture");
529 att
->Complete
= GL_FALSE
;
534 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
535 const GLenum baseFormat
=
536 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
538 ASSERT(att
->Renderbuffer
);
539 if (!att
->Renderbuffer
->InternalFormat
||
540 att
->Renderbuffer
->Width
< 1 ||
541 att
->Renderbuffer
->Height
< 1) {
542 att_incomplete("0x0 renderbuffer");
543 att
->Complete
= GL_FALSE
;
546 if (format
== GL_COLOR
) {
547 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
548 att_incomplete("bad renderbuffer color format");
549 att
->Complete
= GL_FALSE
;
553 else if (format
== GL_DEPTH
) {
554 if (baseFormat
== GL_DEPTH_COMPONENT
) {
557 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
558 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
562 att_incomplete("bad renderbuffer depth format");
563 att
->Complete
= GL_FALSE
;
568 assert(format
== GL_STENCIL
);
569 if (baseFormat
== GL_STENCIL_INDEX
) {
572 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
573 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
577 att
->Complete
= GL_FALSE
;
578 att_incomplete("bad renderbuffer stencil format");
584 ASSERT(att
->Type
== GL_NONE
);
592 * Test if the given framebuffer object is complete and update its
593 * Status field with the results.
594 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
595 * driver to make hardware-specific validation/completeness checks.
596 * Also update the framebuffer's Width and Height fields if the
597 * framebuffer is complete.
600 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
601 struct gl_framebuffer
*fb
)
604 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
605 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
606 GLint numSamples
= -1;
610 assert(fb
->Name
!= 0);
616 /* Start at -2 to more easily loop over all attachment points.
621 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
622 struct gl_renderbuffer_attachment
*att
;
624 gl_format mesaFormat
;
627 * XXX for ARB_fbo, only check color buffers that are named by
628 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
631 /* check for attachment completeness
634 att
= &fb
->Attachment
[BUFFER_DEPTH
];
635 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
636 if (!att
->Complete
) {
637 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
638 fbo_incomplete("depth attachment incomplete", -1);
643 att
= &fb
->Attachment
[BUFFER_STENCIL
];
644 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
645 if (!att
->Complete
) {
646 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
647 fbo_incomplete("stencil attachment incomplete", -1);
652 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
653 test_attachment_completeness(ctx
, GL_COLOR
, att
);
654 if (!att
->Complete
) {
655 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
656 fbo_incomplete("color attachment incomplete", i
);
661 /* get width, height, format of the renderbuffer/texture
663 if (att
->Type
== GL_TEXTURE
) {
664 const struct gl_texture_image
*texImg
665 = att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
666 minWidth
= MIN2(minWidth
, texImg
->Width
);
667 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
668 minHeight
= MIN2(minHeight
, texImg
->Height
);
669 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
670 f
= texImg
->_BaseFormat
;
671 mesaFormat
= texImg
->TexFormat
;
673 if (!_mesa_is_legal_color_format(ctx
, f
) &&
674 !is_legal_depth_format(ctx
, f
)) {
675 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
676 fbo_incomplete("texture attachment incomplete", -1);
680 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
681 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
682 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
683 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
684 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
685 f
= att
->Renderbuffer
->InternalFormat
;
686 mesaFormat
= att
->Renderbuffer
->Format
;
690 assert(att
->Type
== GL_NONE
);
694 if (numSamples
< 0) {
696 numSamples
= att
->Renderbuffer
->NumSamples
;
699 /* check if integer color */
700 fb
->_IntegerColor
= _mesa_is_format_integer_color(mesaFormat
);
702 /* Error-check width, height, format, samples
704 if (numImages
== 1) {
705 /* save format, num samples */
711 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
712 /* check that width, height, format are same */
713 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
714 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
715 fbo_incomplete("width or height mismatch", -1);
718 /* check that all color buffer have same format */
719 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
720 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
721 fbo_incomplete("format mismatch", -1);
725 if (att
->Renderbuffer
&&
726 att
->Renderbuffer
->NumSamples
!= numSamples
) {
727 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
728 fbo_incomplete("inconsistant number of samples", i
);
736 if (ctx
->API
== API_OPENGL
) {
737 /* Check that all DrawBuffers are present */
738 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
739 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
740 const struct gl_renderbuffer_attachment
*att
741 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
743 if (att
->Type
== GL_NONE
) {
744 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
745 fbo_incomplete("missing drawbuffer", j
);
751 /* Check that the ReadBuffer is present */
752 if (fb
->ColorReadBuffer
!= GL_NONE
) {
753 const struct gl_renderbuffer_attachment
*att
754 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
756 if (att
->Type
== GL_NONE
) {
757 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
758 fbo_incomplete("missing readbuffer", -1);
767 if (numImages
== 0) {
768 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
769 fbo_incomplete("no attachments", -1);
773 /* Provisionally set status = COMPLETE ... */
774 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
776 /* ... but the driver may say the FB is incomplete.
777 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
780 if (ctx
->Driver
.ValidateFramebuffer
) {
781 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
782 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
783 fbo_incomplete("driver marked FBO as incomplete", -1);
787 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
789 * Note that if ARB_framebuffer_object is supported and the attached
790 * renderbuffers/textures are different sizes, the framebuffer
791 * width/height will be set to the smallest width/height.
793 fb
->Width
= minWidth
;
794 fb
->Height
= minHeight
;
796 /* finally, update the visual info for the framebuffer */
797 _mesa_update_framebuffer_visual(ctx
, fb
);
803 _mesa_IsRenderbufferEXT(GLuint renderbuffer
)
805 GET_CURRENT_CONTEXT(ctx
);
806 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
808 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
809 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
817 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
819 struct gl_renderbuffer
*newRb
;
820 GET_CURRENT_CONTEXT(ctx
);
822 ASSERT_OUTSIDE_BEGIN_END(ctx
);
824 if (target
!= GL_RENDERBUFFER_EXT
) {
825 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
829 /* No need to flush here since the render buffer binding has no
830 * effect on rendering state.
834 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
835 if (newRb
== &DummyRenderbuffer
) {
836 /* ID was reserved, but no real renderbuffer object made yet */
839 else if (!newRb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
840 /* All RB IDs must be Gen'd */
841 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
846 /* create new renderbuffer object */
847 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
849 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
852 ASSERT(newRb
->AllocStorage
);
853 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
854 newRb
->RefCount
= 1; /* referenced by hash table */
861 ASSERT(newRb
!= &DummyRenderbuffer
);
863 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
868 * If the given renderbuffer is anywhere attached to the framebuffer, detach
870 * This is used when a renderbuffer object is deleted.
871 * The spec calls for unbinding.
874 detach_renderbuffer(struct gl_context
*ctx
,
875 struct gl_framebuffer
*fb
,
876 struct gl_renderbuffer
*rb
)
879 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
880 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
881 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
884 invalidate_framebuffer(fb
);
889 _mesa_DeleteRenderbuffersEXT(GLsizei n
, const GLuint
*renderbuffers
)
892 GET_CURRENT_CONTEXT(ctx
);
894 ASSERT_OUTSIDE_BEGIN_END(ctx
);
895 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
897 for (i
= 0; i
< n
; i
++) {
898 if (renderbuffers
[i
] > 0) {
899 struct gl_renderbuffer
*rb
;
900 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
902 /* check if deleting currently bound renderbuffer object */
903 if (rb
== ctx
->CurrentRenderbuffer
) {
905 ASSERT(rb
->RefCount
>= 2);
906 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT
, 0);
909 if (ctx
->DrawBuffer
->Name
) {
910 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
912 if (ctx
->ReadBuffer
->Name
&& ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
913 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
916 /* Remove from hash table immediately, to free the ID.
917 * But the object will not be freed until it's no longer
918 * referenced anywhere else.
920 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
922 if (rb
!= &DummyRenderbuffer
) {
923 /* no longer referenced by hash table */
924 _mesa_reference_renderbuffer(&rb
, NULL
);
933 _mesa_GenRenderbuffersEXT(GLsizei n
, GLuint
*renderbuffers
)
935 GET_CURRENT_CONTEXT(ctx
);
939 ASSERT_OUTSIDE_BEGIN_END(ctx
);
942 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
949 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
951 for (i
= 0; i
< n
; i
++) {
952 GLuint name
= first
+ i
;
953 renderbuffers
[i
] = name
;
954 /* insert dummy placeholder into hash table */
955 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
956 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
957 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
963 * Given an internal format token for a render buffer, return the
964 * corresponding base format.
965 * This is very similar to _mesa_base_tex_format() but the set of valid
966 * internal formats is somewhat different.
968 * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
969 * GL_DEPTH_STENCIL_EXT or zero if error.
971 * XXX in the future when we support red-only and red-green formats
972 * we'll also return GL_RED and GL_RG.
975 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
977 switch (internalFormat
) {
1001 case GL_RGBA16_SNORM
:
1003 case GL_STENCIL_INDEX
:
1004 case GL_STENCIL_INDEX1_EXT
:
1005 case GL_STENCIL_INDEX4_EXT
:
1006 case GL_STENCIL_INDEX8_EXT
:
1007 case GL_STENCIL_INDEX16_EXT
:
1008 return GL_STENCIL_INDEX
;
1009 case GL_DEPTH_COMPONENT
:
1010 case GL_DEPTH_COMPONENT16
:
1011 case GL_DEPTH_COMPONENT24
:
1012 case GL_DEPTH_COMPONENT32
:
1013 return GL_DEPTH_COMPONENT
;
1014 case GL_DEPTH_STENCIL_EXT
:
1015 case GL_DEPTH24_STENCIL8_EXT
:
1016 if (ctx
->Extensions
.EXT_packed_depth_stencil
)
1017 return GL_DEPTH_STENCIL_EXT
;
1020 /* XXX add floating point formats eventually */
1027 /** sentinal value, see below */
1028 #define NO_SAMPLES 1000
1032 * Helper function used by _mesa_RenderbufferStorageEXT() and
1033 * _mesa_RenderbufferStorageMultisample().
1034 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1037 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1038 GLsizei width
, GLsizei height
, GLsizei samples
)
1040 const char *func
= samples
== NO_SAMPLES
?
1041 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1042 struct gl_renderbuffer
*rb
;
1044 GET_CURRENT_CONTEXT(ctx
);
1046 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1048 if (target
!= GL_RENDERBUFFER_EXT
) {
1049 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1053 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1054 if (baseFormat
== 0) {
1055 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat)", func
);
1059 if (width
< 1 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1060 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1064 if (height
< 1 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1065 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1069 if (samples
== NO_SAMPLES
) {
1070 /* NumSamples == 0 indicates non-multisampling */
1073 else if (samples
> (GLsizei
) ctx
->Const
.MaxSamples
) {
1074 /* note: driver may choose to use more samples than what's requested */
1075 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(samples)", func
);
1079 rb
= ctx
->CurrentRenderbuffer
;
1081 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1085 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1087 if (rb
->InternalFormat
== internalFormat
&&
1088 rb
->Width
== (GLuint
) width
&&
1089 rb
->Height
== (GLuint
) height
) {
1090 /* no change in allocation needed */
1094 /* These MUST get set by the AllocStorage func */
1095 rb
->Format
= MESA_FORMAT_NONE
;
1096 rb
->NumSamples
= samples
;
1098 /* Now allocate the storage */
1099 ASSERT(rb
->AllocStorage
);
1100 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1101 /* No error - check/set fields now */
1102 assert(rb
->Format
!= MESA_FORMAT_NONE
);
1103 assert(rb
->Width
== (GLuint
) width
);
1104 assert(rb
->Height
== (GLuint
) height
);
1105 rb
->InternalFormat
= internalFormat
;
1106 rb
->_BaseFormat
= baseFormat
;
1107 assert(rb
->_BaseFormat
!= 0);
1110 /* Probably ran out of memory - clear the fields */
1113 rb
->Format
= MESA_FORMAT_NONE
;
1114 rb
->InternalFormat
= GL_NONE
;
1115 rb
->_BaseFormat
= GL_NONE
;
1120 test_framebuffer_completeness(ctx, fb);
1122 /* XXX if this renderbuffer is attached anywhere, invalidate attachment
1128 #if FEATURE_OES_EGL_image
1130 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1132 struct gl_renderbuffer
*rb
;
1133 GET_CURRENT_CONTEXT(ctx
);
1134 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1136 if (!ctx
->Extensions
.OES_EGL_image
) {
1137 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1138 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1142 if (target
!= GL_RENDERBUFFER
) {
1143 _mesa_error(ctx
, GL_INVALID_ENUM
,
1144 "EGLImageTargetRenderbufferStorageOES");
1148 rb
= ctx
->CurrentRenderbuffer
;
1150 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1151 "EGLImageTargetRenderbufferStorageOES");
1155 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1157 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1163 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1164 * _mesa_GetFramebufferAttachmentParameterivEXT()
1165 * We have to be careful to respect the base format. For example, if a
1166 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1167 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1168 * we need to return zero.
1171 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1174 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1175 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1176 if (baseFormat
== GL_RGB
|| baseFormat
== GL_RGBA
||
1177 baseFormat
== GL_RG
|| baseFormat
== GL_RED
)
1178 return _mesa_get_format_bits(format
, pname
);
1181 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1182 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1183 if (baseFormat
== GL_RGB
|| baseFormat
== GL_RGBA
|| baseFormat
== GL_RG
)
1184 return _mesa_get_format_bits(format
, pname
);
1187 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1188 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1189 if (baseFormat
== GL_RGB
|| baseFormat
== GL_RGBA
)
1190 return _mesa_get_format_bits(format
, pname
);
1193 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1194 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1195 if (baseFormat
== GL_RGBA
|| baseFormat
== GL_ALPHA
||
1196 baseFormat
== GL_LUMINANCE_ALPHA
)
1197 return _mesa_get_format_bits(format
, pname
);
1200 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1201 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1202 if (baseFormat
== GL_DEPTH_COMPONENT
|| baseFormat
== GL_DEPTH_STENCIL
)
1203 return _mesa_get_format_bits(format
, pname
);
1206 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1207 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1208 if (baseFormat
== GL_STENCIL_INDEX
|| baseFormat
== GL_DEPTH_STENCIL
)
1209 return _mesa_get_format_bits(format
, pname
);
1220 _mesa_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1221 GLsizei width
, GLsizei height
)
1223 /* GL_ARB_fbo says calling this function is equivalent to calling
1224 * glRenderbufferStorageMultisample() with samples=0. We pass in
1225 * a token value here just for error reporting purposes.
1227 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1232 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1233 GLenum internalFormat
,
1234 GLsizei width
, GLsizei height
)
1236 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1241 * OpenGL ES version of glRenderBufferStorage.
1244 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1245 GLsizei width
, GLsizei height
)
1247 switch (internalFormat
) {
1249 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1250 /* choose a closest format */
1251 internalFormat
= GL_RGB5
;
1257 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1262 _mesa_GetRenderbufferParameterivEXT(GLenum target
, GLenum pname
, GLint
*params
)
1264 struct gl_renderbuffer
*rb
;
1265 GET_CURRENT_CONTEXT(ctx
);
1267 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1269 if (target
!= GL_RENDERBUFFER_EXT
) {
1270 _mesa_error(ctx
, GL_INVALID_ENUM
,
1271 "glGetRenderbufferParameterivEXT(target)");
1275 rb
= ctx
->CurrentRenderbuffer
;
1277 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1278 "glGetRenderbufferParameterivEXT");
1282 /* No need to flush here since we're just quering state which is
1283 * not effected by rendering.
1287 case GL_RENDERBUFFER_WIDTH_EXT
:
1288 *params
= rb
->Width
;
1290 case GL_RENDERBUFFER_HEIGHT_EXT
:
1291 *params
= rb
->Height
;
1293 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1294 *params
= rb
->InternalFormat
;
1296 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1297 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1298 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1299 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1300 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1301 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1302 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1304 case GL_RENDERBUFFER_SAMPLES
:
1305 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1306 *params
= rb
->NumSamples
;
1311 _mesa_error(ctx
, GL_INVALID_ENUM
,
1312 "glGetRenderbufferParameterivEXT(target)");
1318 GLboolean GLAPIENTRY
1319 _mesa_IsFramebufferEXT(GLuint framebuffer
)
1321 GET_CURRENT_CONTEXT(ctx
);
1322 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1324 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1325 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1333 * Check if any of the attachments of the given framebuffer are textures
1334 * (render to texture). Call ctx->Driver.RenderTexture() for such
1338 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1341 ASSERT(ctx
->Driver
.RenderTexture
);
1344 return; /* can't render to texture with winsys framebuffers */
1346 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1347 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1348 struct gl_texture_object
*texObj
= att
->Texture
;
1350 && texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
1351 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1358 * Examine all the framebuffer's attachments to see if any are textures.
1359 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1360 * notify the device driver that the texture image may have changed.
1363 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1366 return; /* can't render to texture with winsys framebuffers */
1368 if (ctx
->Driver
.FinishRenderTexture
) {
1370 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1371 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1372 if (att
->Texture
&& att
->Renderbuffer
) {
1373 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1381 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
1383 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1384 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1385 GLboolean bindReadBuf
, bindDrawBuf
;
1386 GET_CURRENT_CONTEXT(ctx
);
1389 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1390 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1391 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1395 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1397 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1398 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1399 "glBindFramebufferEXT(unsupported)");
1404 #if FEATURE_EXT_framebuffer_blit
1405 case GL_DRAW_FRAMEBUFFER_EXT
:
1406 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1407 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1410 bindDrawBuf
= GL_TRUE
;
1411 bindReadBuf
= GL_FALSE
;
1413 case GL_READ_FRAMEBUFFER_EXT
:
1414 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1415 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1418 bindDrawBuf
= GL_FALSE
;
1419 bindReadBuf
= GL_TRUE
;
1422 case GL_FRAMEBUFFER_EXT
:
1423 bindDrawBuf
= GL_TRUE
;
1424 bindReadBuf
= GL_TRUE
;
1427 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1432 /* Binding a user-created framebuffer object */
1433 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1434 if (newDrawFb
== &DummyFramebuffer
) {
1435 /* ID was reserved, but no real framebuffer object made yet */
1438 else if (!newDrawFb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
1439 /* All FBO IDs must be Gen'd */
1440 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1445 /* create new framebuffer object */
1446 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1448 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1451 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1453 newReadFb
= newDrawFb
;
1456 /* Binding the window system framebuffer (which was originally set
1457 * with MakeCurrent).
1459 newDrawFb
= ctx
->WinSysDrawBuffer
;
1460 newReadFb
= ctx
->WinSysReadBuffer
;
1464 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1466 /* save pointers to current/old framebuffers */
1467 oldDrawFb
= ctx
->DrawBuffer
;
1468 oldReadFb
= ctx
->ReadBuffer
;
1470 /* check if really changing bindings */
1471 if (oldDrawFb
== newDrawFb
)
1472 bindDrawBuf
= GL_FALSE
;
1473 if (oldReadFb
== newReadFb
)
1474 bindReadBuf
= GL_FALSE
;
1477 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1479 * We also check if we're beginning and/or ending render-to-texture.
1480 * When a framebuffer with texture attachments is unbound, call
1481 * ctx->Driver.FinishRenderTexture().
1482 * When a framebuffer with texture attachments is bound, call
1483 * ctx->Driver.RenderTexture().
1485 * Note that if the ReadBuffer has texture attachments we don't consider
1486 * that a render-to-texture case.
1489 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1491 /* check if old readbuffer was render-to-texture */
1492 check_end_texture_render(ctx
, oldReadFb
);
1494 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1498 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1500 /* check if old read/draw buffers were render-to-texture */
1502 check_end_texture_render(ctx
, oldReadFb
);
1504 if (oldDrawFb
!= oldReadFb
)
1505 check_end_texture_render(ctx
, oldDrawFb
);
1507 /* check if newly bound framebuffer has any texture attachments */
1508 check_begin_texture_render(ctx
, newDrawFb
);
1510 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1513 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1514 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1520 _mesa_DeleteFramebuffersEXT(GLsizei n
, const GLuint
*framebuffers
)
1523 GET_CURRENT_CONTEXT(ctx
);
1525 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1526 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1528 for (i
= 0; i
< n
; i
++) {
1529 if (framebuffers
[i
] > 0) {
1530 struct gl_framebuffer
*fb
;
1531 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1533 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1535 /* check if deleting currently bound framebuffer object */
1536 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1537 /* separate draw/read binding points */
1538 if (fb
== ctx
->DrawBuffer
) {
1540 ASSERT(fb
->RefCount
>= 2);
1541 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1543 if (fb
== ctx
->ReadBuffer
) {
1545 ASSERT(fb
->RefCount
>= 2);
1546 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT
, 0);
1550 /* only one binding point for read/draw buffers */
1551 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1553 ASSERT(fb
->RefCount
>= 2);
1554 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT
, 0);
1558 /* remove from hash table immediately, to free the ID */
1559 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1561 if (fb
!= &DummyFramebuffer
) {
1562 /* But the object will not be freed until it's no longer
1563 * bound in any context.
1565 _mesa_reference_framebuffer(&fb
, NULL
);
1574 _mesa_GenFramebuffersEXT(GLsizei n
, GLuint
*framebuffers
)
1576 GET_CURRENT_CONTEXT(ctx
);
1580 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1583 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
1590 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
1592 for (i
= 0; i
< n
; i
++) {
1593 GLuint name
= first
+ i
;
1594 framebuffers
[i
] = name
;
1595 /* insert dummy placeholder into hash table */
1596 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1597 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
1598 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1605 _mesa_CheckFramebufferStatusEXT(GLenum target
)
1607 struct gl_framebuffer
*buffer
;
1608 GET_CURRENT_CONTEXT(ctx
);
1610 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1613 #if FEATURE_EXT_framebuffer_blit
1614 case GL_DRAW_FRAMEBUFFER_EXT
:
1615 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1616 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1619 buffer
= ctx
->DrawBuffer
;
1621 case GL_READ_FRAMEBUFFER_EXT
:
1622 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1623 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1626 buffer
= ctx
->ReadBuffer
;
1629 case GL_FRAMEBUFFER_EXT
:
1630 buffer
= ctx
->DrawBuffer
;
1633 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1634 return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */
1637 if (buffer
->Name
== 0) {
1638 /* The window system / default framebuffer is always complete */
1639 return GL_FRAMEBUFFER_COMPLETE_EXT
;
1642 /* No need to flush here */
1644 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
1645 _mesa_test_framebuffer_completeness(ctx
, buffer
);
1648 return buffer
->_Status
;
1654 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1657 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
1658 GLenum attachment
, GLenum textarget
, GLuint texture
,
1659 GLint level
, GLint zoffset
)
1661 struct gl_renderbuffer_attachment
*att
;
1662 struct gl_texture_object
*texObj
= NULL
;
1663 struct gl_framebuffer
*fb
;
1664 GLboolean error
= GL_FALSE
;
1666 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1669 case GL_READ_FRAMEBUFFER_EXT
:
1670 error
= !ctx
->Extensions
.EXT_framebuffer_blit
;
1671 fb
= ctx
->ReadBuffer
;
1673 case GL_DRAW_FRAMEBUFFER_EXT
:
1674 error
= !ctx
->Extensions
.EXT_framebuffer_blit
;
1676 case GL_FRAMEBUFFER_EXT
:
1677 fb
= ctx
->DrawBuffer
;
1684 _mesa_error(ctx
, GL_INVALID_ENUM
,
1685 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
1691 /* check framebuffer binding */
1692 if (fb
->Name
== 0) {
1693 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1694 "glFramebufferTexture%sEXT", caller
);
1699 /* The textarget, level, and zoffset parameters are only validated if
1700 * texture is non-zero.
1703 GLboolean err
= GL_TRUE
;
1705 texObj
= _mesa_lookup_texture(ctx
, texture
);
1706 if (texObj
!= NULL
) {
1707 if (textarget
== 0) {
1708 /* XXX what's the purpose of this? */
1709 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
1710 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
1711 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
);
1714 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
1715 ? !IS_CUBE_FACE(textarget
)
1716 : (texObj
->Target
!= textarget
);
1720 /* can't render to a non-existant texture */
1721 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1722 "glFramebufferTexture%sEXT(non existant texture)",
1728 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1729 "glFramebufferTexture%sEXT(texture target mismatch)",
1734 if (texObj
->Target
== GL_TEXTURE_3D
) {
1735 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
1736 if (zoffset
< 0 || zoffset
>= maxSize
) {
1737 _mesa_error(ctx
, GL_INVALID_VALUE
,
1738 "glFramebufferTexture%sEXT(zoffset)", caller
);
1742 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
1743 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
)) {
1744 if (zoffset
< 0 || zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
1745 _mesa_error(ctx
, GL_INVALID_VALUE
,
1746 "glFramebufferTexture%sEXT(layer)", caller
);
1752 (level
>= _mesa_max_texture_levels(ctx
, texObj
->Target
))) {
1753 _mesa_error(ctx
, GL_INVALID_VALUE
,
1754 "glFramebufferTexture%sEXT(level)", caller
);
1759 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1761 _mesa_error(ctx
, GL_INVALID_ENUM
,
1762 "glFramebufferTexture%sEXT(attachment)", caller
);
1766 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1768 _glthread_LOCK_MUTEX(fb
->Mutex
);
1770 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
1772 /* Set the render-to-texture flag. We'll check this flag in
1773 * glTexImage() and friends to determine if we need to revalidate
1774 * any FBOs that might be rendering into this texture.
1775 * This flag never gets cleared since it's non-trivial to determine
1776 * when all FBOs might be done rendering to this texture. That's OK
1777 * though since it's uncommon to render to a texture then repeatedly
1778 * call glTexImage() to change images in the texture.
1780 texObj
->_RenderToTexture
= GL_TRUE
;
1783 _mesa_remove_attachment(ctx
, att
);
1786 invalidate_framebuffer(fb
);
1788 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
1794 _mesa_FramebufferTexture1DEXT(GLenum target
, GLenum attachment
,
1795 GLenum textarget
, GLuint texture
, GLint level
)
1797 GET_CURRENT_CONTEXT(ctx
);
1799 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_1D
)) {
1800 _mesa_error(ctx
, GL_INVALID_ENUM
,
1801 "glFramebufferTexture1DEXT(textarget)");
1805 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
1811 _mesa_FramebufferTexture2DEXT(GLenum target
, GLenum attachment
,
1812 GLenum textarget
, GLuint texture
, GLint level
)
1814 GET_CURRENT_CONTEXT(ctx
);
1816 if ((texture
!= 0) &&
1817 (textarget
!= GL_TEXTURE_2D
) &&
1818 (textarget
!= GL_TEXTURE_RECTANGLE_ARB
) &&
1819 (!IS_CUBE_FACE(textarget
))) {
1820 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1821 "glFramebufferTexture2DEXT(textarget=0x%x)", textarget
);
1825 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
1831 _mesa_FramebufferTexture3DEXT(GLenum target
, GLenum attachment
,
1832 GLenum textarget
, GLuint texture
,
1833 GLint level
, GLint zoffset
)
1835 GET_CURRENT_CONTEXT(ctx
);
1837 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
1838 _mesa_error(ctx
, GL_INVALID_ENUM
,
1839 "glFramebufferTexture3DEXT(textarget)");
1843 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
1849 _mesa_FramebufferTextureLayerEXT(GLenum target
, GLenum attachment
,
1850 GLuint texture
, GLint level
, GLint layer
)
1852 GET_CURRENT_CONTEXT(ctx
);
1854 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
1860 _mesa_FramebufferRenderbufferEXT(GLenum target
, GLenum attachment
,
1861 GLenum renderbufferTarget
,
1862 GLuint renderbuffer
)
1864 struct gl_renderbuffer_attachment
*att
;
1865 struct gl_framebuffer
*fb
;
1866 struct gl_renderbuffer
*rb
;
1867 GET_CURRENT_CONTEXT(ctx
);
1869 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1872 #if FEATURE_EXT_framebuffer_blit
1873 case GL_DRAW_FRAMEBUFFER_EXT
:
1874 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1875 _mesa_error(ctx
, GL_INVALID_ENUM
,
1876 "glFramebufferRenderbufferEXT(target)");
1879 fb
= ctx
->DrawBuffer
;
1881 case GL_READ_FRAMEBUFFER_EXT
:
1882 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1883 _mesa_error(ctx
, GL_INVALID_ENUM
,
1884 "glFramebufferRenderbufferEXT(target)");
1887 fb
= ctx
->ReadBuffer
;
1890 case GL_FRAMEBUFFER_EXT
:
1891 fb
= ctx
->DrawBuffer
;
1894 _mesa_error(ctx
, GL_INVALID_ENUM
,
1895 "glFramebufferRenderbufferEXT(target)");
1899 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
1900 _mesa_error(ctx
, GL_INVALID_ENUM
,
1901 "glFramebufferRenderbufferEXT(renderbufferTarget)");
1905 if (fb
->Name
== 0) {
1906 /* Can't attach new renderbuffers to a window system framebuffer */
1907 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
1911 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1913 _mesa_error(ctx
, GL_INVALID_ENUM
,
1914 "glFramebufferRenderbufferEXT(invalid attachment %s)",
1915 _mesa_lookup_enum_by_nr(attachment
));
1920 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1922 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1923 "glFramebufferRenderbufferEXT(non-existant"
1924 " renderbuffer %u)", renderbuffer
);
1929 /* remove renderbuffer attachment */
1933 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
1934 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
1935 /* make sure the renderbuffer is a depth/stencil format */
1936 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
1937 if (baseFormat
!= GL_DEPTH_STENCIL
) {
1938 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1939 "glFramebufferRenderbufferEXT(renderbuffer"
1940 " is not DEPTH_STENCIL format)");
1946 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1948 assert(ctx
->Driver
.FramebufferRenderbuffer
);
1949 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
1951 /* Some subsequent GL commands may depend on the framebuffer's visual
1952 * after the binding is updated. Update visual info now.
1954 _mesa_update_framebuffer_visual(ctx
, fb
);
1959 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target
, GLenum attachment
,
1960 GLenum pname
, GLint
*params
)
1962 const struct gl_renderbuffer_attachment
*att
;
1963 struct gl_framebuffer
*buffer
;
1964 GET_CURRENT_CONTEXT(ctx
);
1966 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1969 #if FEATURE_EXT_framebuffer_blit
1970 case GL_DRAW_FRAMEBUFFER_EXT
:
1971 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1972 _mesa_error(ctx
, GL_INVALID_ENUM
,
1973 "glGetFramebufferAttachmentParameterivEXT(target)");
1976 buffer
= ctx
->DrawBuffer
;
1978 case GL_READ_FRAMEBUFFER_EXT
:
1979 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1980 _mesa_error(ctx
, GL_INVALID_ENUM
,
1981 "glGetFramebufferAttachmentParameterivEXT(target)");
1984 buffer
= ctx
->ReadBuffer
;
1987 case GL_FRAMEBUFFER_EXT
:
1988 buffer
= ctx
->DrawBuffer
;
1991 _mesa_error(ctx
, GL_INVALID_ENUM
,
1992 "glGetFramebufferAttachmentParameterivEXT(target)");
1996 if (buffer
->Name
== 0) {
1997 /* the default / window-system FBO */
1998 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2001 /* user-created framebuffer FBO */
2002 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2006 _mesa_error(ctx
, GL_INVALID_ENUM
,
2007 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2011 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2012 /* the depth and stencil attachments must point to the same buffer */
2013 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2014 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2015 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2016 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2017 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2018 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2019 " attachments differ)");
2024 /* No need to flush here */
2027 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2028 *params
= buffer
->Name
== 0 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2030 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2031 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2032 *params
= att
->Renderbuffer
->Name
;
2034 else if (att
->Type
== GL_TEXTURE
) {
2035 *params
= att
->Texture
->Name
;
2038 assert(att
->Type
== GL_NONE
);
2042 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2043 if (att
->Type
== GL_TEXTURE
) {
2044 *params
= att
->TextureLevel
;
2047 _mesa_error(ctx
, GL_INVALID_ENUM
,
2048 "glGetFramebufferAttachmentParameterivEXT(pname)");
2051 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2052 if (att
->Type
== GL_TEXTURE
) {
2053 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2054 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2061 _mesa_error(ctx
, GL_INVALID_ENUM
,
2062 "glGetFramebufferAttachmentParameterivEXT(pname)");
2065 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2066 if (att
->Type
== GL_TEXTURE
) {
2067 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2068 *params
= att
->Zoffset
;
2075 _mesa_error(ctx
, GL_INVALID_ENUM
,
2076 "glGetFramebufferAttachmentParameterivEXT(pname)");
2079 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2080 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2081 _mesa_error(ctx
, GL_INVALID_ENUM
,
2082 "glGetFramebufferAttachmentParameterivEXT(pname)");
2085 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2088 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2089 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2090 _mesa_error(ctx
, GL_INVALID_ENUM
,
2091 "glGetFramebufferAttachmentParameterivEXT(pname)");
2095 gl_format format
= att
->Renderbuffer
->Format
;
2096 if (format
== MESA_FORMAT_CI8
|| format
== MESA_FORMAT_S8
) {
2101 *params
= _mesa_get_format_datatype(format
);
2105 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2106 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2107 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2108 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2109 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2110 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2111 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2112 _mesa_error(ctx
, GL_INVALID_ENUM
,
2113 "glGetFramebufferAttachmentParameterivEXT(pname)");
2115 else if (att
->Texture
) {
2116 const struct gl_texture_image
*texImage
=
2117 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2120 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2121 texImage
->TexFormat
);
2127 else if (att
->Renderbuffer
) {
2128 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2129 att
->Renderbuffer
->Format
);
2136 _mesa_error(ctx
, GL_INVALID_ENUM
,
2137 "glGetFramebufferAttachmentParameterivEXT(pname)");
2144 _mesa_GenerateMipmapEXT(GLenum target
)
2146 struct gl_texture_object
*texObj
;
2147 GET_CURRENT_CONTEXT(ctx
);
2149 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2150 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2156 case GL_TEXTURE_CUBE_MAP
:
2157 /* OK, legal value */
2160 /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
2161 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target)");
2165 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2167 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2172 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2173 !_mesa_cube_complete(texObj
)) {
2174 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2175 "glGenerateMipmap(incomplete cube map)");
2179 _mesa_lock_texture(ctx
, texObj
);
2180 if (target
== GL_TEXTURE_CUBE_MAP
) {
2182 for (face
= 0; face
< 6; face
++)
2183 ctx
->Driver
.GenerateMipmap(ctx
,
2184 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2188 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2190 _mesa_unlock_texture(ctx
, texObj
);
2194 #if FEATURE_EXT_framebuffer_blit
2196 static const struct gl_renderbuffer_attachment
*
2197 find_attachment(const struct gl_framebuffer
*fb
, const struct gl_renderbuffer
*rb
)
2200 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2201 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2202 return &fb
->Attachment
[i
];
2210 * Blit rectangular region, optionally from one framebuffer to another.
2212 * Note, if the src buffer is multisampled and the dest is not, this is
2213 * when the samples must be resolved to a single color.
2216 _mesa_BlitFramebufferEXT(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2217 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2218 GLbitfield mask
, GLenum filter
)
2220 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2221 GL_DEPTH_BUFFER_BIT
|
2222 GL_STENCIL_BUFFER_BIT
);
2223 const struct gl_framebuffer
*readFb
, *drawFb
;
2224 const struct gl_renderbuffer
*colorReadRb
, *colorDrawRb
;
2225 GET_CURRENT_CONTEXT(ctx
);
2227 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2228 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2230 if (ctx
->NewState
) {
2231 _mesa_update_state(ctx
);
2234 readFb
= ctx
->ReadBuffer
;
2235 drawFb
= ctx
->DrawBuffer
;
2237 if (!readFb
|| !drawFb
) {
2238 /* This will normally never happen but someday we may want to
2239 * support MakeCurrent() with no drawables.
2244 /* check for complete framebuffers */
2245 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2246 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2247 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2248 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2252 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2253 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2257 if (mask
& ~legalMaskBits
) {
2258 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2262 /* depth/stencil must be blitted with nearest filtering */
2263 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2264 && filter
!= GL_NEAREST
) {
2265 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2266 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
2270 /* get color read/draw renderbuffers */
2271 if (mask
& GL_COLOR_BUFFER_BIT
) {
2272 colorReadRb
= readFb
->_ColorReadBuffer
;
2273 colorDrawRb
= drawFb
->_ColorDrawBuffers
[0];
2276 colorReadRb
= colorDrawRb
= NULL
;
2279 if (mask
& GL_STENCIL_BUFFER_BIT
) {
2280 struct gl_renderbuffer
*readRb
= readFb
->_StencilBuffer
;
2281 struct gl_renderbuffer
*drawRb
= drawFb
->_StencilBuffer
;
2284 _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
2285 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
2286 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2287 "glBlitFramebufferEXT(stencil buffer size mismatch");
2292 if (mask
& GL_DEPTH_BUFFER_BIT
) {
2293 struct gl_renderbuffer
*readRb
= readFb
->_DepthBuffer
;
2294 struct gl_renderbuffer
*drawRb
= drawFb
->_DepthBuffer
;
2297 _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
2298 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) {
2299 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2300 "glBlitFramebufferEXT(depth buffer size mismatch");
2305 if (readFb
->Visual
.samples
> 0 &&
2306 drawFb
->Visual
.samples
> 0 &&
2307 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
2308 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2309 "glBlitFramebufferEXT(mismatched samples");
2313 /* extra checks for multisample copies... */
2314 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
2315 /* src and dest region sizes must be the same */
2316 if (srcX1
- srcX0
!= dstX1
- dstX0
||
2317 srcY1
- srcY0
!= dstY1
- dstY0
) {
2318 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2319 "glBlitFramebufferEXT(bad src/dst multisample region sizes");
2323 /* color formats must match */
2326 colorReadRb
->Format
!= colorDrawRb
->Format
) {
2327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2328 "glBlitFramebufferEXT(bad src/dst multisample pixel formats");
2333 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
2334 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
2340 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2342 srcX0
, srcY0
, srcX1
, srcY1
,
2343 dstX0
, dstY0
, dstX1
, dstY1
,
2346 const struct gl_renderbuffer_attachment
*att
;
2348 att
= find_attachment(readFb
, colorReadRb
);
2349 printf(" Src FBO %u RB %u (%dx%d) ",
2350 readFb
->Name
, colorReadRb
->Name
,
2351 colorReadRb
->Width
, colorReadRb
->Height
);
2352 if (att
&& att
->Texture
) {
2353 printf("Tex %u tgt 0x%x level %u face %u",
2355 att
->Texture
->Target
,
2361 att
= find_attachment(drawFb
, colorDrawRb
);
2362 printf(" Dst FBO %u RB %u (%dx%d) ",
2363 drawFb
->Name
, colorDrawRb
->Name
,
2364 colorDrawRb
->Width
, colorDrawRb
->Height
);
2365 if (att
&& att
->Texture
) {
2366 printf("Tex %u tgt 0x%x level %u face %u",
2368 att
->Texture
->Target
,
2376 ASSERT(ctx
->Driver
.BlitFramebuffer
);
2377 ctx
->Driver
.BlitFramebuffer(ctx
,
2378 srcX0
, srcY0
, srcX1
, srcY1
,
2379 dstX0
, dstY0
, dstX1
, dstY1
,
2382 #endif /* FEATURE_EXT_framebuffer_blit */
2384 #if FEATURE_ARB_geometry_shader4
2386 _mesa_FramebufferTextureARB(GLenum target
, GLenum attachment
,
2387 GLuint texture
, GLint level
)
2389 GET_CURRENT_CONTEXT(ctx
);
2390 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2391 "glFramebufferTextureARB "
2392 "not implemented!");
2396 _mesa_FramebufferTextureFaceARB(GLenum target
, GLenum attachment
,
2397 GLuint texture
, GLint level
, GLenum face
)
2399 GET_CURRENT_CONTEXT(ctx
);
2400 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2401 "glFramebufferTextureFaceARB "
2402 "not implemented!");
2404 #endif /* FEATURE_ARB_geometry_shader4 */