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"
44 #include "mfeatures.h"
46 #include "renderbuffer.h"
52 /** Set this to 1 to help debug FBO incompleteness problems */
55 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
62 * None of the GL_EXT_framebuffer_object functions are compiled into
69 * When glGenRender/FramebuffersEXT() is called we insert pointers to
70 * these placeholder objects into the hash table.
71 * Later, when the object ID is first bound, we replace the placeholder
72 * with the real frame/renderbuffer.
74 static struct gl_framebuffer DummyFramebuffer
;
75 static struct gl_renderbuffer DummyRenderbuffer
;
77 /* We bind this framebuffer when applications pass a NULL
78 * drawable/surface in make current. */
79 static struct gl_framebuffer IncompleteFramebuffer
;
83 * Is the given FBO a user-created FBO?
85 static inline GLboolean
86 is_user_fbo(const struct gl_framebuffer
*fb
)
93 * Is the given FBO a window system FBO (like an X window)?
95 static inline GLboolean
96 is_winsys_fbo(const struct gl_framebuffer
*fb
)
103 delete_dummy_renderbuffer(struct gl_renderbuffer
*rb
)
109 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
116 _mesa_init_fbobjects(struct gl_context
*ctx
)
118 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
119 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
120 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
121 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
122 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
123 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
126 struct gl_framebuffer
*
127 _mesa_get_incomplete_framebuffer(void)
129 return &IncompleteFramebuffer
;
133 * Helper routine for getting a gl_renderbuffer.
135 struct gl_renderbuffer
*
136 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
138 struct gl_renderbuffer
*rb
;
143 rb
= (struct gl_renderbuffer
*)
144 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
150 * Helper routine for getting a gl_framebuffer.
152 struct gl_framebuffer
*
153 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
155 struct gl_framebuffer
*fb
;
160 fb
= (struct gl_framebuffer
*)
161 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
167 * Mark the given framebuffer as invalid. This will force the
168 * test for framebuffer completeness to be done before the framebuffer
172 invalidate_framebuffer(struct gl_framebuffer
*fb
)
174 fb
->_Status
= 0; /* "indeterminate" */
179 * Return the gl_framebuffer object which corresponds to the given
180 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
181 * Check support for GL_EXT_framebuffer_blit to determine if certain
183 * \return gl_framebuffer pointer or NULL if target is illegal
185 static struct gl_framebuffer
*
186 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
189 case GL_DRAW_FRAMEBUFFER
:
190 return ctx
->Extensions
.EXT_framebuffer_blit
&& ctx
->API
== API_OPENGL
191 ? ctx
->DrawBuffer
: NULL
;
192 case GL_READ_FRAMEBUFFER
:
193 return ctx
->Extensions
.EXT_framebuffer_blit
&& ctx
->API
== API_OPENGL
194 ? ctx
->ReadBuffer
: NULL
;
195 case GL_FRAMEBUFFER_EXT
:
196 return ctx
->DrawBuffer
;
204 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
205 * gl_renderbuffer_attachment object.
206 * This function is only used for user-created FB objects, not the
207 * default / window-system FB object.
208 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
209 * the depth buffer attachment point.
211 struct gl_renderbuffer_attachment
*
212 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
217 assert(is_user_fbo(fb
));
219 switch (attachment
) {
220 case GL_COLOR_ATTACHMENT0_EXT
:
221 case GL_COLOR_ATTACHMENT1_EXT
:
222 case GL_COLOR_ATTACHMENT2_EXT
:
223 case GL_COLOR_ATTACHMENT3_EXT
:
224 case GL_COLOR_ATTACHMENT4_EXT
:
225 case GL_COLOR_ATTACHMENT5_EXT
:
226 case GL_COLOR_ATTACHMENT6_EXT
:
227 case GL_COLOR_ATTACHMENT7_EXT
:
228 case GL_COLOR_ATTACHMENT8_EXT
:
229 case GL_COLOR_ATTACHMENT9_EXT
:
230 case GL_COLOR_ATTACHMENT10_EXT
:
231 case GL_COLOR_ATTACHMENT11_EXT
:
232 case GL_COLOR_ATTACHMENT12_EXT
:
233 case GL_COLOR_ATTACHMENT13_EXT
:
234 case GL_COLOR_ATTACHMENT14_EXT
:
235 case GL_COLOR_ATTACHMENT15_EXT
:
236 /* Only OpenGL ES 1.x forbids color attachments other than
237 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
240 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
241 if (i
>= ctx
->Const
.MaxColorAttachments
242 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
245 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
246 case GL_DEPTH_STENCIL_ATTACHMENT
:
247 if (ctx
->API
!= API_OPENGL
)
250 case GL_DEPTH_ATTACHMENT_EXT
:
251 return &fb
->Attachment
[BUFFER_DEPTH
];
252 case GL_STENCIL_ATTACHMENT_EXT
:
253 return &fb
->Attachment
[BUFFER_STENCIL
];
261 * As above, but only used for getting attachments of the default /
262 * window-system framebuffer (not user-created framebuffer objects).
264 static struct gl_renderbuffer_attachment
*
265 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
268 assert(is_winsys_fbo(fb
));
270 switch (attachment
) {
272 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
274 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
276 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
278 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
280 if (fb
->Visual
.numAuxBuffers
== 1) {
281 return &fb
->Attachment
[BUFFER_AUX0
];
285 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
287 * "If the default framebuffer is bound to target, then attachment must
288 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
289 * identifying a color buffer; DEPTH, identifying the depth buffer; or
290 * STENCIL, identifying the stencil buffer."
292 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
293 * language. However, revision #33 of the ARB_framebuffer_object spec
296 * "If the default framebuffer is bound to <target>, then <attachment>
297 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
298 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
299 * depth buffer, or the stencil buffer, and <pname> may be
300 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
301 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
303 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
304 * from glext.h, so shipping apps should not use those values.
306 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
307 * support queries of the window system FBO.
310 return &fb
->Attachment
[BUFFER_DEPTH
];
312 return &fb
->Attachment
[BUFFER_STENCIL
];
321 * Remove any texture or renderbuffer attached to the given attachment
322 * point. Update reference counts, etc.
325 _mesa_remove_attachment(struct gl_context
*ctx
,
326 struct gl_renderbuffer_attachment
*att
)
328 if (att
->Type
== GL_TEXTURE
) {
329 ASSERT(att
->Texture
);
330 if (ctx
->Driver
.FinishRenderTexture
) {
331 /* tell driver that we're done rendering to this texture. */
332 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
334 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
335 ASSERT(!att
->Texture
);
337 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
338 ASSERT(!att
->Texture
);
339 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
340 ASSERT(!att
->Renderbuffer
);
343 att
->Complete
= GL_TRUE
;
348 * Bind a texture object to an attachment point.
349 * The previous binding, if any, will be removed first.
352 _mesa_set_texture_attachment(struct gl_context
*ctx
,
353 struct gl_framebuffer
*fb
,
354 struct gl_renderbuffer_attachment
*att
,
355 struct gl_texture_object
*texObj
,
356 GLenum texTarget
, GLuint level
, GLuint zoffset
)
358 if (att
->Texture
== texObj
) {
359 /* re-attaching same texture */
360 ASSERT(att
->Type
== GL_TEXTURE
);
361 if (ctx
->Driver
.FinishRenderTexture
)
362 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
366 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
367 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
368 _mesa_remove_attachment(ctx
, att
);
369 att
->Type
= GL_TEXTURE
;
370 assert(!att
->Texture
);
371 _mesa_reference_texobj(&att
->Texture
, texObj
);
374 /* always update these fields */
375 att
->TextureLevel
= level
;
376 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
377 att
->Zoffset
= zoffset
;
378 att
->Complete
= GL_FALSE
;
380 if (_mesa_get_attachment_teximage(att
)) {
381 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
384 invalidate_framebuffer(fb
);
389 * Bind a renderbuffer to an attachment point.
390 * The previous binding, if any, will be removed first.
393 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
394 struct gl_renderbuffer_attachment
*att
,
395 struct gl_renderbuffer
*rb
)
397 /* XXX check if re-doing same attachment, exit early */
398 _mesa_remove_attachment(ctx
, att
);
399 att
->Type
= GL_RENDERBUFFER_EXT
;
400 att
->Texture
= NULL
; /* just to be safe */
401 att
->Complete
= GL_FALSE
;
402 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
407 * Fallback for ctx->Driver.FramebufferRenderbuffer()
408 * Attach a renderbuffer object to a framebuffer object.
411 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
412 struct gl_framebuffer
*fb
,
413 GLenum attachment
, struct gl_renderbuffer
*rb
)
415 struct gl_renderbuffer_attachment
*att
;
417 _glthread_LOCK_MUTEX(fb
->Mutex
);
419 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
422 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
423 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
424 /* do stencil attachment here (depth already done above) */
425 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
427 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
429 rb
->AttachedAnytime
= GL_TRUE
;
432 _mesa_remove_attachment(ctx
, att
);
435 invalidate_framebuffer(fb
);
437 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
442 * Fallback for ctx->Driver.ValidateFramebuffer()
443 * Check if the renderbuffer's formats are supported by the software
445 * Drivers should probably override this.
448 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
451 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
452 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
454 switch (rb
->_BaseFormat
) {
456 case GL_LUMINANCE_ALPHA
:
461 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
465 switch (rb
->Format
) {
466 /* XXX This list is likely incomplete. */
467 case MESA_FORMAT_RGB9_E5_FLOAT
:
468 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
471 /* render buffer format is supported by software rendering */
483 att_incomplete(const char *msg
)
486 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
497 fbo_incomplete(const char *msg
, int index
)
500 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
509 * Is the given base format a legal format for a color renderbuffer?
512 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
514 switch (baseFormat
) {
519 case GL_LUMINANCE_ALPHA
:
522 return ctx
->Extensions
.ARB_framebuffer_object
;
525 return ctx
->Extensions
.ARB_texture_rg
;
533 * Is the given base format a legal format for a depth/stencil renderbuffer?
536 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
538 switch (baseFormat
) {
539 case GL_DEPTH_COMPONENT
:
540 case GL_DEPTH_STENCIL_EXT
:
549 * Test if an attachment point is complete and update its Complete field.
550 * \param format if GL_COLOR, this is a color attachment point,
551 * if GL_DEPTH, this is a depth component attachment point,
552 * if GL_STENCIL, this is a stencil component attachment point.
555 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
556 struct gl_renderbuffer_attachment
*att
)
558 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
560 /* assume complete */
561 att
->Complete
= GL_TRUE
;
563 /* Look for reasons why the attachment might be incomplete */
564 if (att
->Type
== GL_TEXTURE
) {
565 const struct gl_texture_object
*texObj
= att
->Texture
;
566 struct gl_texture_image
*texImage
;
570 att_incomplete("no texobj");
571 att
->Complete
= GL_FALSE
;
575 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
577 att_incomplete("no teximage");
578 att
->Complete
= GL_FALSE
;
581 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
582 att_incomplete("teximage width/height=0");
583 printf("texobj = %u\n", texObj
->Name
);
584 printf("level = %d\n", att
->TextureLevel
);
585 att
->Complete
= GL_FALSE
;
588 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
589 att_incomplete("bad z offset");
590 att
->Complete
= GL_FALSE
;
594 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
596 if (format
== GL_COLOR
) {
597 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
598 att_incomplete("bad format");
599 att
->Complete
= GL_FALSE
;
602 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
603 att_incomplete("compressed internalformat");
604 att
->Complete
= GL_FALSE
;
608 else if (format
== GL_DEPTH
) {
609 if (baseFormat
== GL_DEPTH_COMPONENT
) {
612 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
613 ctx
->Extensions
.ARB_depth_texture
&&
614 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
618 att
->Complete
= GL_FALSE
;
619 att_incomplete("bad depth format");
624 ASSERT(format
== GL_STENCIL
);
625 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
626 ctx
->Extensions
.ARB_depth_texture
&&
627 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
631 /* no such thing as stencil-only textures */
632 att_incomplete("illegal stencil texture");
633 att
->Complete
= GL_FALSE
;
638 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
639 const GLenum baseFormat
=
640 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
642 ASSERT(att
->Renderbuffer
);
643 if (!att
->Renderbuffer
->InternalFormat
||
644 att
->Renderbuffer
->Width
< 1 ||
645 att
->Renderbuffer
->Height
< 1) {
646 att_incomplete("0x0 renderbuffer");
647 att
->Complete
= GL_FALSE
;
650 if (format
== GL_COLOR
) {
651 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
652 att_incomplete("bad renderbuffer color format");
653 att
->Complete
= GL_FALSE
;
657 else if (format
== GL_DEPTH
) {
658 if (baseFormat
== GL_DEPTH_COMPONENT
) {
661 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
662 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
666 att_incomplete("bad renderbuffer depth format");
667 att
->Complete
= GL_FALSE
;
672 assert(format
== GL_STENCIL
);
673 if (baseFormat
== GL_STENCIL_INDEX
) {
676 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
677 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
681 att
->Complete
= GL_FALSE
;
682 att_incomplete("bad renderbuffer stencil format");
688 ASSERT(att
->Type
== GL_NONE
);
696 * Test if the given framebuffer object is complete and update its
697 * Status field with the results.
698 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
699 * driver to make hardware-specific validation/completeness checks.
700 * Also update the framebuffer's Width and Height fields if the
701 * framebuffer is complete.
704 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
705 struct gl_framebuffer
*fb
)
708 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
709 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
710 GLint numSamples
= -1;
714 assert(is_user_fbo(fb
));
720 /* Start at -2 to more easily loop over all attachment points.
725 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
726 struct gl_renderbuffer_attachment
*att
;
731 * XXX for ARB_fbo, only check color buffers that are named by
732 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
735 /* check for attachment completeness
738 att
= &fb
->Attachment
[BUFFER_DEPTH
];
739 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
740 if (!att
->Complete
) {
741 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
742 fbo_incomplete("depth attachment incomplete", -1);
747 att
= &fb
->Attachment
[BUFFER_STENCIL
];
748 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
749 if (!att
->Complete
) {
750 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
751 fbo_incomplete("stencil attachment incomplete", -1);
756 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
757 test_attachment_completeness(ctx
, GL_COLOR
, att
);
758 if (!att
->Complete
) {
759 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
760 fbo_incomplete("color attachment incomplete", i
);
765 /* get width, height, format of the renderbuffer/texture
767 if (att
->Type
== GL_TEXTURE
) {
768 const struct gl_texture_image
*texImg
=
769 _mesa_get_attachment_teximage(att
);
770 minWidth
= MIN2(minWidth
, texImg
->Width
);
771 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
772 minHeight
= MIN2(minHeight
, texImg
->Height
);
773 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
774 f
= texImg
->_BaseFormat
;
775 attFormat
= texImg
->TexFormat
;
777 if (!_mesa_is_legal_color_format(ctx
, f
) &&
778 !is_legal_depth_format(ctx
, f
)) {
779 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
780 fbo_incomplete("texture attachment incomplete", -1);
784 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
785 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
786 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
787 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
788 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
789 f
= att
->Renderbuffer
->InternalFormat
;
790 attFormat
= att
->Renderbuffer
->Format
;
794 assert(att
->Type
== GL_NONE
);
798 if (att
->Renderbuffer
&& numSamples
< 0) {
800 numSamples
= att
->Renderbuffer
->NumSamples
;
803 /* check if integer color */
804 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
806 /* Error-check width, height, format, samples
808 if (numImages
== 1) {
809 /* save format, num samples */
815 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
816 /* check that width, height, format are same */
817 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
818 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
819 fbo_incomplete("width or height mismatch", -1);
822 /* check that all color buffers are the same format */
823 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
824 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
825 fbo_incomplete("format mismatch", -1);
829 if (att
->Renderbuffer
&&
830 att
->Renderbuffer
->NumSamples
!= numSamples
) {
831 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
832 fbo_incomplete("inconsistant number of samples", i
);
839 if (ctx
->API
== API_OPENGL
&& !ctx
->Extensions
.ARB_ES2_compatibility
) {
840 /* Check that all DrawBuffers are present */
841 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
842 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
843 const struct gl_renderbuffer_attachment
*att
844 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
846 if (att
->Type
== GL_NONE
) {
847 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
848 fbo_incomplete("missing drawbuffer", j
);
854 /* Check that the ReadBuffer is present */
855 if (fb
->ColorReadBuffer
!= GL_NONE
) {
856 const struct gl_renderbuffer_attachment
*att
857 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
859 if (att
->Type
== GL_NONE
) {
860 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
861 fbo_incomplete("missing readbuffer", -1);
870 if (numImages
== 0) {
871 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
872 fbo_incomplete("no attachments", -1);
876 /* Provisionally set status = COMPLETE ... */
877 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
879 /* ... but the driver may say the FB is incomplete.
880 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
883 if (ctx
->Driver
.ValidateFramebuffer
) {
884 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
885 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
886 fbo_incomplete("driver marked FBO as incomplete", -1);
890 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
892 * Note that if ARB_framebuffer_object is supported and the attached
893 * renderbuffers/textures are different sizes, the framebuffer
894 * width/height will be set to the smallest width/height.
896 fb
->Width
= minWidth
;
897 fb
->Height
= minHeight
;
899 /* finally, update the visual info for the framebuffer */
900 _mesa_update_framebuffer_visual(ctx
, fb
);
906 _mesa_IsRenderbufferEXT(GLuint renderbuffer
)
908 GET_CURRENT_CONTEXT(ctx
);
909 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
911 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
912 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
920 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
922 struct gl_renderbuffer
*newRb
;
923 GET_CURRENT_CONTEXT(ctx
);
925 ASSERT_OUTSIDE_BEGIN_END(ctx
);
927 if (target
!= GL_RENDERBUFFER_EXT
) {
928 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
932 /* No need to flush here since the render buffer binding has no
933 * effect on rendering state.
937 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
938 if (newRb
== &DummyRenderbuffer
) {
939 /* ID was reserved, but no real renderbuffer object made yet */
942 else if (!newRb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
943 /* All RB IDs must be Gen'd */
944 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
949 /* create new renderbuffer object */
950 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
952 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
955 ASSERT(newRb
->AllocStorage
);
956 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
957 newRb
->RefCount
= 1; /* referenced by hash table */
964 ASSERT(newRb
!= &DummyRenderbuffer
);
966 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
971 * If the given renderbuffer is anywhere attached to the framebuffer, detach
973 * This is used when a renderbuffer object is deleted.
974 * The spec calls for unbinding.
977 detach_renderbuffer(struct gl_context
*ctx
,
978 struct gl_framebuffer
*fb
,
979 struct gl_renderbuffer
*rb
)
982 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
983 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
984 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
987 invalidate_framebuffer(fb
);
992 _mesa_DeleteRenderbuffersEXT(GLsizei n
, const GLuint
*renderbuffers
)
995 GET_CURRENT_CONTEXT(ctx
);
997 ASSERT_OUTSIDE_BEGIN_END(ctx
);
998 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1000 for (i
= 0; i
< n
; i
++) {
1001 if (renderbuffers
[i
] > 0) {
1002 struct gl_renderbuffer
*rb
;
1003 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1005 /* check if deleting currently bound renderbuffer object */
1006 if (rb
== ctx
->CurrentRenderbuffer
) {
1008 ASSERT(rb
->RefCount
>= 2);
1009 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT
, 0);
1012 if (is_user_fbo(ctx
->DrawBuffer
)) {
1013 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1015 if (is_user_fbo(ctx
->ReadBuffer
)
1016 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1017 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1020 /* Remove from hash table immediately, to free the ID.
1021 * But the object will not be freed until it's no longer
1022 * referenced anywhere else.
1024 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1026 if (rb
!= &DummyRenderbuffer
) {
1027 /* no longer referenced by hash table */
1028 _mesa_reference_renderbuffer(&rb
, NULL
);
1037 _mesa_GenRenderbuffersEXT(GLsizei n
, GLuint
*renderbuffers
)
1039 GET_CURRENT_CONTEXT(ctx
);
1043 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1046 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1053 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1055 for (i
= 0; i
< n
; i
++) {
1056 GLuint name
= first
+ i
;
1057 renderbuffers
[i
] = name
;
1058 /* insert dummy placeholder into hash table */
1059 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1060 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1061 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1067 * Given an internal format token for a render buffer, return the
1068 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1069 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1070 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1072 * This is similar to _mesa_base_tex_format() but the set of valid
1073 * internal formats is different.
1075 * Note that even if a format is determined to be legal here, validation
1076 * of the FBO may fail if the format is not supported by the driver/GPU.
1078 * \param internalFormat as passed to glRenderbufferStorage()
1079 * \return the base internal format, or 0 if internalFormat is illegal
1082 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1085 * Notes: some formats such as alpha, luminance, etc. were added
1086 * with GL_ARB_framebuffer_object.
1088 switch (internalFormat
) {
1094 return ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1098 case GL_LUMINANCE12
:
1099 case GL_LUMINANCE16
:
1100 return ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1101 case GL_LUMINANCE_ALPHA
:
1102 case GL_LUMINANCE4_ALPHA4
:
1103 case GL_LUMINANCE6_ALPHA2
:
1104 case GL_LUMINANCE8_ALPHA8
:
1105 case GL_LUMINANCE12_ALPHA4
:
1106 case GL_LUMINANCE12_ALPHA12
:
1107 case GL_LUMINANCE16_ALPHA16
:
1108 return ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1112 case GL_INTENSITY12
:
1113 case GL_INTENSITY16
:
1114 return ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1133 case GL_SRGB8_ALPHA8_EXT
:
1135 case GL_STENCIL_INDEX
:
1136 case GL_STENCIL_INDEX1_EXT
:
1137 case GL_STENCIL_INDEX4_EXT
:
1138 case GL_STENCIL_INDEX8_EXT
:
1139 case GL_STENCIL_INDEX16_EXT
:
1140 return GL_STENCIL_INDEX
;
1141 case GL_DEPTH_COMPONENT
:
1142 case GL_DEPTH_COMPONENT16
:
1143 case GL_DEPTH_COMPONENT24
:
1144 case GL_DEPTH_COMPONENT32
:
1145 return GL_DEPTH_COMPONENT
;
1146 case GL_DEPTH_STENCIL_EXT
:
1147 case GL_DEPTH24_STENCIL8_EXT
:
1148 if (ctx
->Extensions
.EXT_packed_depth_stencil
)
1149 return GL_DEPTH_STENCIL_EXT
;
1152 case GL_DEPTH_COMPONENT32F
:
1153 if (ctx
->Extensions
.ARB_depth_buffer_float
)
1154 return GL_DEPTH_COMPONENT
;
1157 case GL_DEPTH32F_STENCIL8
:
1158 if (ctx
->Extensions
.ARB_depth_buffer_float
)
1159 return GL_DEPTH_STENCIL
;
1165 return ctx
->Extensions
.ARB_texture_rg
? GL_RED
: 0;
1169 return ctx
->Extensions
.ARB_texture_rg
? GL_RG
: 0;
1170 /* signed normalized texture formats */
1174 return ctx
->Extensions
.EXT_texture_snorm
? GL_RED
: 0;
1178 return ctx
->Extensions
.EXT_texture_snorm
? GL_RG
: 0;
1181 case GL_RGB16_SNORM
:
1182 return ctx
->Extensions
.EXT_texture_snorm
? GL_RGB
: 0;
1184 case GL_RGBA8_SNORM
:
1185 case GL_RGBA16_SNORM
:
1186 return ctx
->Extensions
.EXT_texture_snorm
? GL_RGBA
: 0;
1187 case GL_ALPHA_SNORM
:
1188 case GL_ALPHA8_SNORM
:
1189 case GL_ALPHA16_SNORM
:
1190 return ctx
->Extensions
.EXT_texture_snorm
&&
1191 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1192 case GL_LUMINANCE_SNORM
:
1193 case GL_LUMINANCE8_SNORM
:
1194 case GL_LUMINANCE16_SNORM
:
1195 return ctx
->Extensions
.EXT_texture_snorm
&&
1196 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1197 case GL_LUMINANCE_ALPHA_SNORM
:
1198 case GL_LUMINANCE8_ALPHA8_SNORM
:
1199 case GL_LUMINANCE16_ALPHA16_SNORM
:
1200 return ctx
->Extensions
.EXT_texture_snorm
&&
1201 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1202 case GL_INTENSITY_SNORM
:
1203 case GL_INTENSITY8_SNORM
:
1204 case GL_INTENSITY16_SNORM
:
1205 return ctx
->Extensions
.EXT_texture_snorm
&&
1206 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1209 return ctx
->Extensions
.ARB_texture_rg
&&
1210 ctx
->Extensions
.ARB_texture_float
? GL_RED
: 0;
1213 return ctx
->Extensions
.ARB_texture_rg
&&
1214 ctx
->Extensions
.ARB_texture_float
? GL_RG
: 0;
1217 return ctx
->Extensions
.ARB_texture_float
? GL_RGB
: 0;
1220 return ctx
->Extensions
.ARB_texture_float
? GL_RGBA
: 0;
1221 case GL_ALPHA16F_ARB
:
1222 case GL_ALPHA32F_ARB
:
1223 return ctx
->Extensions
.ARB_texture_float
&&
1224 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1225 case GL_LUMINANCE16F_ARB
:
1226 case GL_LUMINANCE32F_ARB
:
1227 return ctx
->Extensions
.ARB_texture_float
&&
1228 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1229 case GL_LUMINANCE_ALPHA16F_ARB
:
1230 case GL_LUMINANCE_ALPHA32F_ARB
:
1231 return ctx
->Extensions
.ARB_texture_float
&&
1232 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1233 case GL_INTENSITY16F_ARB
:
1234 case GL_INTENSITY32F_ARB
:
1235 return ctx
->Extensions
.ARB_texture_float
&&
1236 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1238 return ctx
->Extensions
.EXT_texture_shared_exponent
? GL_RGB
: 0;
1239 case GL_R11F_G11F_B10F
:
1240 return ctx
->Extensions
.EXT_packed_float
? GL_RGB
: 0;
1242 case GL_RGBA8UI_EXT
:
1243 case GL_RGBA16UI_EXT
:
1244 case GL_RGBA32UI_EXT
:
1246 case GL_RGBA16I_EXT
:
1247 case GL_RGBA32I_EXT
:
1248 return ctx
->Extensions
.EXT_texture_integer
? GL_RGBA
: 0;
1251 case GL_RGB16UI_EXT
:
1252 case GL_RGB32UI_EXT
:
1256 return ctx
->Extensions
.EXT_texture_integer
? GL_RGB
: 0;
1264 return ctx
->Extensions
.ARB_texture_rg
&&
1265 ctx
->Extensions
.EXT_texture_integer
? GL_RED
: 0;
1273 return ctx
->Extensions
.ARB_texture_rg
&&
1274 ctx
->Extensions
.EXT_texture_integer
? GL_RG
: 0;
1276 case GL_INTENSITY8I_EXT
:
1277 case GL_INTENSITY8UI_EXT
:
1278 case GL_INTENSITY16I_EXT
:
1279 case GL_INTENSITY16UI_EXT
:
1280 case GL_INTENSITY32I_EXT
:
1281 case GL_INTENSITY32UI_EXT
:
1282 return ctx
->Extensions
.EXT_texture_integer
&&
1283 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1285 case GL_LUMINANCE8I_EXT
:
1286 case GL_LUMINANCE8UI_EXT
:
1287 case GL_LUMINANCE16I_EXT
:
1288 case GL_LUMINANCE16UI_EXT
:
1289 case GL_LUMINANCE32I_EXT
:
1290 case GL_LUMINANCE32UI_EXT
:
1291 return ctx
->Extensions
.EXT_texture_integer
&&
1292 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1294 case GL_LUMINANCE_ALPHA8I_EXT
:
1295 case GL_LUMINANCE_ALPHA8UI_EXT
:
1296 case GL_LUMINANCE_ALPHA16I_EXT
:
1297 case GL_LUMINANCE_ALPHA16UI_EXT
:
1298 case GL_LUMINANCE_ALPHA32I_EXT
:
1299 case GL_LUMINANCE_ALPHA32UI_EXT
:
1300 return ctx
->Extensions
.EXT_texture_integer
&&
1301 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1304 return ctx
->Extensions
.ARB_texture_rgb10_a2ui
? GL_RGBA
: 0;
1312 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1315 invalidate_rb(GLuint key
, void *data
, void *userData
)
1317 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1318 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1320 /* If this is a user-created FBO */
1321 if (is_user_fbo(fb
)) {
1323 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1324 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1325 if (att
->Type
== GL_RENDERBUFFER
&&
1326 att
->Renderbuffer
== rb
) {
1327 /* Mark fb status as indeterminate to force re-validation */
1336 /** sentinal value, see below */
1337 #define NO_SAMPLES 1000
1341 * Helper function used by _mesa_RenderbufferStorageEXT() and
1342 * _mesa_RenderbufferStorageMultisample().
1343 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1346 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1347 GLsizei width
, GLsizei height
, GLsizei samples
)
1349 const char *func
= samples
== NO_SAMPLES
?
1350 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1351 struct gl_renderbuffer
*rb
;
1353 GET_CURRENT_CONTEXT(ctx
);
1355 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1357 if (target
!= GL_RENDERBUFFER_EXT
) {
1358 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1362 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1363 if (baseFormat
== 0) {
1364 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat)", func
);
1368 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1369 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1373 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1374 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1378 if (samples
== NO_SAMPLES
) {
1379 /* NumSamples == 0 indicates non-multisampling */
1382 else if (samples
> (GLsizei
) ctx
->Const
.MaxSamples
) {
1383 /* note: driver may choose to use more samples than what's requested */
1384 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(samples)", func
);
1388 rb
= ctx
->CurrentRenderbuffer
;
1390 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1394 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1396 if (rb
->InternalFormat
== internalFormat
&&
1397 rb
->Width
== (GLuint
) width
&&
1398 rb
->Height
== (GLuint
) height
) {
1399 /* no change in allocation needed */
1403 /* These MUST get set by the AllocStorage func */
1404 rb
->Format
= MESA_FORMAT_NONE
;
1405 rb
->NumSamples
= samples
;
1407 /* Now allocate the storage */
1408 ASSERT(rb
->AllocStorage
);
1409 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1410 /* No error - check/set fields now */
1411 assert(rb
->Format
!= MESA_FORMAT_NONE
);
1412 assert(rb
->Width
== (GLuint
) width
);
1413 assert(rb
->Height
== (GLuint
) height
);
1414 rb
->InternalFormat
= internalFormat
;
1415 rb
->_BaseFormat
= baseFormat
;
1416 assert(rb
->_BaseFormat
!= 0);
1419 /* Probably ran out of memory - clear the fields */
1422 rb
->Format
= MESA_FORMAT_NONE
;
1423 rb
->InternalFormat
= GL_NONE
;
1424 rb
->_BaseFormat
= GL_NONE
;
1428 /* Invalidate the framebuffers the renderbuffer is attached in. */
1429 if (rb
->AttachedAnytime
) {
1430 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1435 #if FEATURE_OES_EGL_image
1437 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1439 struct gl_renderbuffer
*rb
;
1440 GET_CURRENT_CONTEXT(ctx
);
1441 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1443 if (!ctx
->Extensions
.OES_EGL_image
) {
1444 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1445 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1449 if (target
!= GL_RENDERBUFFER
) {
1450 _mesa_error(ctx
, GL_INVALID_ENUM
,
1451 "EGLImageTargetRenderbufferStorageOES");
1455 rb
= ctx
->CurrentRenderbuffer
;
1457 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1458 "EGLImageTargetRenderbufferStorageOES");
1462 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1464 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1470 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1471 * _mesa_GetFramebufferAttachmentParameterivEXT()
1472 * We have to be careful to respect the base format. For example, if a
1473 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1474 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1475 * we need to return zero.
1478 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1480 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1481 return _mesa_get_format_bits(format
, pname
);
1489 _mesa_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1490 GLsizei width
, GLsizei height
)
1492 /* GL_ARB_fbo says calling this function is equivalent to calling
1493 * glRenderbufferStorageMultisample() with samples=0. We pass in
1494 * a token value here just for error reporting purposes.
1496 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1501 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1502 GLenum internalFormat
,
1503 GLsizei width
, GLsizei height
)
1505 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1510 * OpenGL ES version of glRenderBufferStorage.
1513 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1514 GLsizei width
, GLsizei height
)
1516 switch (internalFormat
) {
1518 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1519 /* choose a closest format */
1520 internalFormat
= GL_RGB5
;
1526 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1531 _mesa_GetRenderbufferParameterivEXT(GLenum target
, GLenum pname
, GLint
*params
)
1533 struct gl_renderbuffer
*rb
;
1534 GET_CURRENT_CONTEXT(ctx
);
1536 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1538 if (target
!= GL_RENDERBUFFER_EXT
) {
1539 _mesa_error(ctx
, GL_INVALID_ENUM
,
1540 "glGetRenderbufferParameterivEXT(target)");
1544 rb
= ctx
->CurrentRenderbuffer
;
1546 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1547 "glGetRenderbufferParameterivEXT");
1551 /* No need to flush here since we're just quering state which is
1552 * not effected by rendering.
1556 case GL_RENDERBUFFER_WIDTH_EXT
:
1557 *params
= rb
->Width
;
1559 case GL_RENDERBUFFER_HEIGHT_EXT
:
1560 *params
= rb
->Height
;
1562 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1563 *params
= rb
->InternalFormat
;
1565 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1566 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1567 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1568 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1569 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1570 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1571 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1573 case GL_RENDERBUFFER_SAMPLES
:
1574 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1575 *params
= rb
->NumSamples
;
1580 _mesa_error(ctx
, GL_INVALID_ENUM
,
1581 "glGetRenderbufferParameterivEXT(target)");
1587 GLboolean GLAPIENTRY
1588 _mesa_IsFramebufferEXT(GLuint framebuffer
)
1590 GET_CURRENT_CONTEXT(ctx
);
1591 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1593 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1594 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1602 * Check if any of the attachments of the given framebuffer are textures
1603 * (render to texture). Call ctx->Driver.RenderTexture() for such
1607 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1610 ASSERT(ctx
->Driver
.RenderTexture
);
1612 if (is_winsys_fbo(fb
))
1613 return; /* can't render to texture with winsys framebuffers */
1615 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1616 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1617 if (att
->Texture
&& _mesa_get_attachment_teximage(att
)) {
1618 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1625 * Examine all the framebuffer's attachments to see if any are textures.
1626 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1627 * notify the device driver that the texture image may have changed.
1630 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1632 if (is_winsys_fbo(fb
))
1633 return; /* can't render to texture with winsys framebuffers */
1635 if (ctx
->Driver
.FinishRenderTexture
) {
1637 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1638 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1639 if (att
->Texture
&& att
->Renderbuffer
) {
1640 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1648 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
1650 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1651 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1652 GLboolean bindReadBuf
, bindDrawBuf
;
1653 GET_CURRENT_CONTEXT(ctx
);
1656 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1657 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1658 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1662 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1664 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1665 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1666 "glBindFramebufferEXT(unsupported)");
1671 #if FEATURE_EXT_framebuffer_blit
1672 case GL_DRAW_FRAMEBUFFER_EXT
:
1673 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1674 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1677 bindDrawBuf
= GL_TRUE
;
1678 bindReadBuf
= GL_FALSE
;
1680 case GL_READ_FRAMEBUFFER_EXT
:
1681 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1682 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1685 bindDrawBuf
= GL_FALSE
;
1686 bindReadBuf
= GL_TRUE
;
1689 case GL_FRAMEBUFFER_EXT
:
1690 bindDrawBuf
= GL_TRUE
;
1691 bindReadBuf
= GL_TRUE
;
1694 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1699 /* Binding a user-created framebuffer object */
1700 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1701 if (newDrawFb
== &DummyFramebuffer
) {
1702 /* ID was reserved, but no real framebuffer object made yet */
1705 else if (!newDrawFb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
1706 /* All FBO IDs must be Gen'd */
1707 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1712 /* create new framebuffer object */
1713 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1715 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1718 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1720 newReadFb
= newDrawFb
;
1723 /* Binding the window system framebuffer (which was originally set
1724 * with MakeCurrent).
1726 newDrawFb
= ctx
->WinSysDrawBuffer
;
1727 newReadFb
= ctx
->WinSysReadBuffer
;
1731 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1733 /* save pointers to current/old framebuffers */
1734 oldDrawFb
= ctx
->DrawBuffer
;
1735 oldReadFb
= ctx
->ReadBuffer
;
1737 /* check if really changing bindings */
1738 if (oldDrawFb
== newDrawFb
)
1739 bindDrawBuf
= GL_FALSE
;
1740 if (oldReadFb
== newReadFb
)
1741 bindReadBuf
= GL_FALSE
;
1744 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1746 * We also check if we're beginning and/or ending render-to-texture.
1747 * When a framebuffer with texture attachments is unbound, call
1748 * ctx->Driver.FinishRenderTexture().
1749 * When a framebuffer with texture attachments is bound, call
1750 * ctx->Driver.RenderTexture().
1752 * Note that if the ReadBuffer has texture attachments we don't consider
1753 * that a render-to-texture case.
1756 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1758 /* check if old readbuffer was render-to-texture */
1759 check_end_texture_render(ctx
, oldReadFb
);
1761 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1765 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1767 /* check if old read/draw buffers were render-to-texture */
1769 check_end_texture_render(ctx
, oldReadFb
);
1771 if (oldDrawFb
!= oldReadFb
)
1772 check_end_texture_render(ctx
, oldDrawFb
);
1774 /* check if newly bound framebuffer has any texture attachments */
1775 check_begin_texture_render(ctx
, newDrawFb
);
1777 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1780 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1781 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1787 _mesa_DeleteFramebuffersEXT(GLsizei n
, const GLuint
*framebuffers
)
1790 GET_CURRENT_CONTEXT(ctx
);
1792 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1793 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1795 for (i
= 0; i
< n
; i
++) {
1796 if (framebuffers
[i
] > 0) {
1797 struct gl_framebuffer
*fb
;
1798 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1800 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1802 /* check if deleting currently bound framebuffer object */
1803 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1804 /* separate draw/read binding points */
1805 if (fb
== ctx
->DrawBuffer
) {
1807 ASSERT(fb
->RefCount
>= 2);
1808 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1810 if (fb
== ctx
->ReadBuffer
) {
1812 ASSERT(fb
->RefCount
>= 2);
1813 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT
, 0);
1817 /* only one binding point for read/draw buffers */
1818 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1820 ASSERT(fb
->RefCount
>= 2);
1821 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT
, 0);
1825 /* remove from hash table immediately, to free the ID */
1826 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1828 if (fb
!= &DummyFramebuffer
) {
1829 /* But the object will not be freed until it's no longer
1830 * bound in any context.
1832 _mesa_reference_framebuffer(&fb
, NULL
);
1841 _mesa_GenFramebuffersEXT(GLsizei n
, GLuint
*framebuffers
)
1843 GET_CURRENT_CONTEXT(ctx
);
1847 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1850 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
1857 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
1859 for (i
= 0; i
< n
; i
++) {
1860 GLuint name
= first
+ i
;
1861 framebuffers
[i
] = name
;
1862 /* insert dummy placeholder into hash table */
1863 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1864 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
1865 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1872 _mesa_CheckFramebufferStatusEXT(GLenum target
)
1874 struct gl_framebuffer
*buffer
;
1875 GET_CURRENT_CONTEXT(ctx
);
1877 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1879 buffer
= get_framebuffer_target(ctx
, target
);
1881 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1885 if (is_winsys_fbo(buffer
)) {
1886 /* The window system / default framebuffer is always complete */
1887 return GL_FRAMEBUFFER_COMPLETE_EXT
;
1890 /* No need to flush here */
1892 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
1893 _mesa_test_framebuffer_completeness(ctx
, buffer
);
1896 return buffer
->_Status
;
1901 * Replicate the src attachment point. Used by framebuffer_texture() when
1902 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1903 * GL_STENCIL_ATTACHMENT.
1906 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
1907 gl_buffer_index dst
,
1908 gl_buffer_index src
)
1910 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
1911 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
1913 assert(src_att
->Texture
!= NULL
);
1914 assert(src_att
->Renderbuffer
!= NULL
);
1916 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
1917 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
1918 dst_att
->Type
= src_att
->Type
;
1919 dst_att
->Complete
= src_att
->Complete
;
1920 dst_att
->TextureLevel
= src_att
->TextureLevel
;
1921 dst_att
->Zoffset
= src_att
->Zoffset
;
1926 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1929 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
1930 GLenum attachment
, GLenum textarget
, GLuint texture
,
1931 GLint level
, GLint zoffset
)
1933 struct gl_renderbuffer_attachment
*att
;
1934 struct gl_texture_object
*texObj
= NULL
;
1935 struct gl_framebuffer
*fb
;
1937 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1939 fb
= get_framebuffer_target(ctx
, target
);
1941 _mesa_error(ctx
, GL_INVALID_ENUM
,
1942 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
1946 /* check framebuffer binding */
1947 if (is_winsys_fbo(fb
)) {
1948 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1949 "glFramebufferTexture%sEXT", caller
);
1953 /* The textarget, level, and zoffset parameters are only validated if
1954 * texture is non-zero.
1957 GLboolean err
= GL_TRUE
;
1959 texObj
= _mesa_lookup_texture(ctx
, texture
);
1960 if (texObj
!= NULL
) {
1961 if (textarget
== 0) {
1962 /* XXX what's the purpose of this? */
1963 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
1964 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
1965 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
);
1968 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
1969 ? !_mesa_is_cube_face(textarget
)
1970 : (texObj
->Target
!= textarget
);
1974 /* can't render to a non-existant texture */
1975 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1976 "glFramebufferTexture%sEXT(non existant texture)",
1982 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1983 "glFramebufferTexture%sEXT(texture target mismatch)",
1988 if (texObj
->Target
== GL_TEXTURE_3D
) {
1989 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
1990 if (zoffset
< 0 || zoffset
>= maxSize
) {
1991 _mesa_error(ctx
, GL_INVALID_VALUE
,
1992 "glFramebufferTexture%sEXT(zoffset)", caller
);
1996 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
1997 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
)) {
1998 if (zoffset
< 0 || zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
1999 _mesa_error(ctx
, GL_INVALID_VALUE
,
2000 "glFramebufferTexture%sEXT(layer)", caller
);
2006 (level
>= _mesa_max_texture_levels(ctx
, texObj
->Target
))) {
2007 _mesa_error(ctx
, GL_INVALID_VALUE
,
2008 "glFramebufferTexture%sEXT(level)", caller
);
2013 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2015 _mesa_error(ctx
, GL_INVALID_ENUM
,
2016 "glFramebufferTexture%sEXT(attachment)", caller
);
2020 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2022 _glthread_LOCK_MUTEX(fb
->Mutex
);
2024 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2025 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
) {
2026 /* The texture object is already attached to the stencil attachment
2027 * point. Don't create a new renderbuffer; just reuse the stencil
2028 * attachment's. This is required to prevent a GL error in
2029 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2031 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2033 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2034 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
) {
2035 /* As above, but with depth and stencil juxtasposed. */
2036 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2039 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2041 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2042 /* Above we created a new renderbuffer and attached it to the
2043 * depth attachment point. Now attach it to the stencil attachment
2046 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2047 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2052 /* Set the render-to-texture flag. We'll check this flag in
2053 * glTexImage() and friends to determine if we need to revalidate
2054 * any FBOs that might be rendering into this texture.
2055 * This flag never gets cleared since it's non-trivial to determine
2056 * when all FBOs might be done rendering to this texture. That's OK
2057 * though since it's uncommon to render to a texture then repeatedly
2058 * call glTexImage() to change images in the texture.
2060 texObj
->_RenderToTexture
= GL_TRUE
;
2063 _mesa_remove_attachment(ctx
, att
);
2064 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2065 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2066 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2070 invalidate_framebuffer(fb
);
2072 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2078 _mesa_FramebufferTexture1DEXT(GLenum target
, GLenum attachment
,
2079 GLenum textarget
, GLuint texture
, GLint level
)
2081 GET_CURRENT_CONTEXT(ctx
);
2086 switch (textarget
) {
2090 case GL_TEXTURE_1D_ARRAY
:
2091 error
= !ctx
->Extensions
.EXT_texture_array
;
2098 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2099 "glFramebufferTexture1DEXT(textarget=%s)",
2100 _mesa_lookup_enum_by_nr(textarget
));
2105 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2111 _mesa_FramebufferTexture2DEXT(GLenum target
, GLenum attachment
,
2112 GLenum textarget
, GLuint texture
, GLint level
)
2114 GET_CURRENT_CONTEXT(ctx
);
2119 switch (textarget
) {
2123 case GL_TEXTURE_RECTANGLE
:
2124 error
= !ctx
->Extensions
.NV_texture_rectangle
;
2126 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2127 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2128 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2129 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2130 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2131 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2132 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2134 case GL_TEXTURE_2D_ARRAY
:
2135 error
= !ctx
->Extensions
.EXT_texture_array
;
2142 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2143 "glFramebufferTexture2DEXT(textarget=%s)",
2144 _mesa_lookup_enum_by_nr(textarget
));
2149 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2155 _mesa_FramebufferTexture3DEXT(GLenum target
, GLenum attachment
,
2156 GLenum textarget
, GLuint texture
,
2157 GLint level
, GLint zoffset
)
2159 GET_CURRENT_CONTEXT(ctx
);
2161 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2162 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2163 "glFramebufferTexture3DEXT(textarget)");
2167 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2173 _mesa_FramebufferTextureLayerEXT(GLenum target
, GLenum attachment
,
2174 GLuint texture
, GLint level
, GLint layer
)
2176 GET_CURRENT_CONTEXT(ctx
);
2178 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2184 _mesa_FramebufferRenderbufferEXT(GLenum target
, GLenum attachment
,
2185 GLenum renderbufferTarget
,
2186 GLuint renderbuffer
)
2188 struct gl_renderbuffer_attachment
*att
;
2189 struct gl_framebuffer
*fb
;
2190 struct gl_renderbuffer
*rb
;
2191 GET_CURRENT_CONTEXT(ctx
);
2193 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2195 fb
= get_framebuffer_target(ctx
, target
);
2197 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2201 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2202 _mesa_error(ctx
, GL_INVALID_ENUM
,
2203 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2207 if (is_winsys_fbo(fb
)) {
2208 /* Can't attach new renderbuffers to a window system framebuffer */
2209 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2213 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2215 _mesa_error(ctx
, GL_INVALID_ENUM
,
2216 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2217 _mesa_lookup_enum_by_nr(attachment
));
2222 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2224 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2225 "glFramebufferRenderbufferEXT(non-existant"
2226 " renderbuffer %u)", renderbuffer
);
2229 else if (rb
== &DummyRenderbuffer
) {
2230 /* This is what NVIDIA does */
2231 _mesa_error(ctx
, GL_INVALID_VALUE
,
2232 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2238 /* remove renderbuffer attachment */
2242 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2243 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2244 /* make sure the renderbuffer is a depth/stencil format */
2245 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2246 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2247 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2248 "glFramebufferRenderbufferEXT(renderbuffer"
2249 " is not DEPTH_STENCIL format)");
2255 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2257 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2258 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2260 /* Some subsequent GL commands may depend on the framebuffer's visual
2261 * after the binding is updated. Update visual info now.
2263 _mesa_update_framebuffer_visual(ctx
, fb
);
2268 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target
, GLenum attachment
,
2269 GLenum pname
, GLint
*params
)
2271 const struct gl_renderbuffer_attachment
*att
;
2272 struct gl_framebuffer
*buffer
;
2274 GET_CURRENT_CONTEXT(ctx
);
2276 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2278 /* The error differs in GL andd GLES. */
2279 err
= ctx
->API
== API_OPENGL
? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2281 buffer
= get_framebuffer_target(ctx
, target
);
2283 _mesa_error(ctx
, GL_INVALID_ENUM
,
2284 "glGetFramebufferAttachmentParameterivEXT(target)");
2288 if (is_winsys_fbo(buffer
)) {
2289 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2292 * "If the framebuffer currently bound to target is zero, then
2293 * INVALID_OPERATION is generated."
2295 * The EXT_framebuffer_object spec has the same wording, and the
2296 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2299 if (ctx
->API
!= API_OPENGL
|| !ctx
->Extensions
.ARB_framebuffer_object
) {
2300 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2301 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2304 /* the default / window-system FBO */
2305 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2308 /* user-created framebuffer FBO */
2309 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2313 _mesa_error(ctx
, GL_INVALID_ENUM
,
2314 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2318 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2319 /* the depth and stencil attachments must point to the same buffer */
2320 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2321 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2322 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2323 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2324 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2325 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2326 " attachments differ)");
2331 /* No need to flush here */
2334 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2335 *params
= is_winsys_fbo(buffer
) ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2337 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2338 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2339 *params
= att
->Renderbuffer
->Name
;
2341 else if (att
->Type
== GL_TEXTURE
) {
2342 *params
= att
->Texture
->Name
;
2345 assert(att
->Type
== GL_NONE
);
2346 if (ctx
->API
== API_OPENGL
) {
2349 _mesa_error(ctx
, GL_INVALID_ENUM
,
2350 "glGetFramebufferAttachmentParameterivEXT(pname)");
2354 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2355 if (att
->Type
== GL_TEXTURE
) {
2356 *params
= att
->TextureLevel
;
2358 else if (att
->Type
== GL_NONE
) {
2359 _mesa_error(ctx
, err
,
2360 "glGetFramebufferAttachmentParameterivEXT(pname)");
2363 _mesa_error(ctx
, GL_INVALID_ENUM
,
2364 "glGetFramebufferAttachmentParameterivEXT(pname)");
2367 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2368 if (att
->Type
== GL_TEXTURE
) {
2369 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2370 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2376 else if (att
->Type
== GL_NONE
) {
2377 _mesa_error(ctx
, err
,
2378 "glGetFramebufferAttachmentParameterivEXT(pname)");
2381 _mesa_error(ctx
, GL_INVALID_ENUM
,
2382 "glGetFramebufferAttachmentParameterivEXT(pname)");
2385 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2386 if (att
->Type
== GL_TEXTURE
) {
2387 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2388 *params
= att
->Zoffset
;
2394 else if (att
->Type
== GL_NONE
) {
2395 _mesa_error(ctx
, err
,
2396 "glGetFramebufferAttachmentParameterivEXT(pname)");
2399 _mesa_error(ctx
, GL_INVALID_ENUM
,
2400 "glGetFramebufferAttachmentParameterivEXT(pname)");
2403 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2404 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2405 _mesa_error(ctx
, GL_INVALID_ENUM
,
2406 "glGetFramebufferAttachmentParameterivEXT(pname)");
2408 else if (att
->Type
== GL_NONE
) {
2409 _mesa_error(ctx
, err
,
2410 "glGetFramebufferAttachmentParameterivEXT(pname)");
2413 if (ctx
->Extensions
.EXT_framebuffer_sRGB
&& ctx
->Const
.sRGBCapable
) {
2414 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2417 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2418 * if the sRGB conversion is unsupported. */
2419 *params
= GL_LINEAR
;
2423 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2424 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2425 _mesa_error(ctx
, GL_INVALID_ENUM
,
2426 "glGetFramebufferAttachmentParameterivEXT(pname)");
2429 else if (att
->Type
== GL_NONE
) {
2430 _mesa_error(ctx
, err
,
2431 "glGetFramebufferAttachmentParameterivEXT(pname)");
2434 gl_format format
= att
->Renderbuffer
->Format
;
2435 if (format
== MESA_FORMAT_S8
) {
2439 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2440 /* depends on the attachment parameter */
2441 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2449 *params
= _mesa_get_format_datatype(format
);
2453 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2454 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2455 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2456 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2457 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2458 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2459 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
2460 _mesa_error(ctx
, GL_INVALID_ENUM
,
2461 "glGetFramebufferAttachmentParameterivEXT(pname)");
2463 else if (att
->Type
== GL_NONE
) {
2464 _mesa_error(ctx
, err
,
2465 "glGetFramebufferAttachmentParameterivEXT(pname)");
2467 else if (att
->Texture
) {
2468 const struct gl_texture_image
*texImage
=
2469 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2472 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2473 texImage
->TexFormat
);
2479 else if (att
->Renderbuffer
) {
2480 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2481 att
->Renderbuffer
->Format
);
2484 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2485 " invalid FBO attachment structure");
2489 _mesa_error(ctx
, GL_INVALID_ENUM
,
2490 "glGetFramebufferAttachmentParameterivEXT(pname)");
2497 _mesa_GenerateMipmapEXT(GLenum target
)
2499 struct gl_texture_image
*srcImage
;
2500 struct gl_texture_object
*texObj
;
2503 GET_CURRENT_CONTEXT(ctx
);
2505 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2506 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2514 case GL_TEXTURE_CUBE_MAP
:
2515 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2517 case GL_TEXTURE_1D_ARRAY
:
2518 case GL_TEXTURE_2D_ARRAY
:
2519 error
= !ctx
->Extensions
.EXT_texture_array
;
2526 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2527 _mesa_lookup_enum_by_nr(target
));
2531 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2533 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2538 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2539 !_mesa_cube_complete(texObj
)) {
2540 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2541 "glGenerateMipmap(incomplete cube map)");
2545 _mesa_lock_texture(ctx
, texObj
);
2547 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2549 _mesa_unlock_texture(ctx
, texObj
);
2553 if (target
== GL_TEXTURE_CUBE_MAP
) {
2555 for (face
= 0; face
< 6; face
++)
2556 ctx
->Driver
.GenerateMipmap(ctx
,
2557 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2561 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2563 _mesa_unlock_texture(ctx
, texObj
);
2567 #if FEATURE_EXT_framebuffer_blit
2569 static const struct gl_renderbuffer_attachment
*
2570 find_attachment(const struct gl_framebuffer
*fb
,
2571 const struct gl_renderbuffer
*rb
)
2574 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2575 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2576 return &fb
->Attachment
[i
];
2584 * Blit rectangular region, optionally from one framebuffer to another.
2586 * Note, if the src buffer is multisampled and the dest is not, this is
2587 * when the samples must be resolved to a single color.
2590 _mesa_BlitFramebufferEXT(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2591 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2592 GLbitfield mask
, GLenum filter
)
2594 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2595 GL_DEPTH_BUFFER_BIT
|
2596 GL_STENCIL_BUFFER_BIT
);
2597 const struct gl_framebuffer
*readFb
, *drawFb
;
2598 const struct gl_renderbuffer
*colorReadRb
, *colorDrawRb
;
2599 GET_CURRENT_CONTEXT(ctx
);
2601 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2602 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2604 if (MESA_VERBOSE
& VERBOSE_API
)
2606 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2607 srcX0
, srcY0
, srcX1
, srcY1
,
2608 dstX0
, dstY0
, dstX1
, dstY1
,
2609 mask
, _mesa_lookup_enum_by_nr(filter
));
2611 if (ctx
->NewState
) {
2612 _mesa_update_state(ctx
);
2615 readFb
= ctx
->ReadBuffer
;
2616 drawFb
= ctx
->DrawBuffer
;
2618 if (!readFb
|| !drawFb
) {
2619 /* This will normally never happen but someday we may want to
2620 * support MakeCurrent() with no drawables.
2625 /* check for complete framebuffers */
2626 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2627 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2628 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2629 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2633 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2634 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2638 if (mask
& ~legalMaskBits
) {
2639 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2643 /* depth/stencil must be blitted with nearest filtering */
2644 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2645 && filter
!= GL_NEAREST
) {
2646 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2647 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2651 /* get color read/draw renderbuffers */
2652 if (mask
& GL_COLOR_BUFFER_BIT
) {
2653 colorReadRb
= readFb
->_ColorReadBuffer
;
2654 colorDrawRb
= drawFb
->_ColorDrawBuffers
[0];
2656 /* From the EXT_framebuffer_object spec:
2658 * "If a buffer is specified in <mask> and does not exist in both
2659 * the read and draw framebuffers, the corresponding bit is silently
2662 if ((colorReadRb
== NULL
) || (colorDrawRb
== NULL
)) {
2663 colorReadRb
= colorDrawRb
= NULL
;
2664 mask
&= ~GL_COLOR_BUFFER_BIT
;
2668 colorReadRb
= colorDrawRb
= NULL
;
2671 if (mask
& GL_STENCIL_BUFFER_BIT
) {
2672 struct gl_renderbuffer
*readRb
=
2673 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
2674 struct gl_renderbuffer
*drawRb
=
2675 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
2677 /* From the EXT_framebuffer_object spec:
2679 * "If a buffer is specified in <mask> and does not exist in both
2680 * the read and draw framebuffers, the corresponding bit is silently
2683 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
2684 mask
&= ~GL_STENCIL_BUFFER_BIT
;
2686 else if (readRb
->Format
!= drawRb
->Format
) {
2687 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2688 "glBlitFramebufferEXT(stencil buffer format mismatch)");
2693 if (mask
& GL_DEPTH_BUFFER_BIT
) {
2694 struct gl_renderbuffer
*readRb
=
2695 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
2696 struct gl_renderbuffer
*drawRb
=
2697 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
2699 /* From the EXT_framebuffer_object spec:
2701 * "If a buffer is specified in <mask> and does not exist in both
2702 * the read and draw framebuffers, the corresponding bit is silently
2705 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
2706 mask
&= ~GL_DEPTH_BUFFER_BIT
;
2708 else if (readRb
->Format
!= drawRb
->Format
) {
2709 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2710 "glBlitFramebufferEXT(depth buffer format mismatch)");
2715 if (readFb
->Visual
.samples
> 0 &&
2716 drawFb
->Visual
.samples
> 0 &&
2717 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
2718 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2719 "glBlitFramebufferEXT(mismatched samples)");
2723 /* extra checks for multisample copies... */
2724 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
2725 /* src and dest region sizes must be the same */
2726 if (srcX1
- srcX0
!= dstX1
- dstX0
||
2727 srcY1
- srcY0
!= dstY1
- dstY0
) {
2728 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2729 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2733 /* color formats must match */
2736 colorReadRb
->Format
!= colorDrawRb
->Format
) {
2737 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2738 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2743 if (filter
== GL_LINEAR
&& (mask
& GL_COLOR_BUFFER_BIT
)) {
2744 /* 3.1 spec, page 199:
2745 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
2746 * if filter is LINEAR and read buffer contains integer data."
2748 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
2749 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
2750 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2751 "glBlitFramebufferEXT(integer color type)");
2756 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
2757 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
2763 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2765 srcX0
, srcY0
, srcX1
, srcY1
,
2766 dstX0
, dstY0
, dstX1
, dstY1
,
2769 const struct gl_renderbuffer_attachment
*att
;
2771 att
= find_attachment(readFb
, colorReadRb
);
2772 printf(" Src FBO %u RB %u (%dx%d) ",
2773 readFb
->Name
, colorReadRb
->Name
,
2774 colorReadRb
->Width
, colorReadRb
->Height
);
2775 if (att
&& att
->Texture
) {
2776 printf("Tex %u tgt 0x%x level %u face %u",
2778 att
->Texture
->Target
,
2784 att
= find_attachment(drawFb
, colorDrawRb
);
2785 printf(" Dst FBO %u RB %u (%dx%d) ",
2786 drawFb
->Name
, colorDrawRb
->Name
,
2787 colorDrawRb
->Width
, colorDrawRb
->Height
);
2788 if (att
&& att
->Texture
) {
2789 printf("Tex %u tgt 0x%x level %u face %u",
2791 att
->Texture
->Target
,
2803 ASSERT(ctx
->Driver
.BlitFramebuffer
);
2804 ctx
->Driver
.BlitFramebuffer(ctx
,
2805 srcX0
, srcY0
, srcX1
, srcY1
,
2806 dstX0
, dstY0
, dstX1
, dstY1
,
2809 #endif /* FEATURE_EXT_framebuffer_blit */
2812 #if FEATURE_ARB_geometry_shader4
2814 _mesa_FramebufferTextureARB(GLenum target
, GLenum attachment
,
2815 GLuint texture
, GLint level
)
2817 GET_CURRENT_CONTEXT(ctx
);
2818 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2819 "glFramebufferTextureARB "
2820 "not implemented!");
2825 _mesa_FramebufferTextureFaceARB(GLenum target
, GLenum attachment
,
2826 GLuint texture
, GLint level
, GLenum face
)
2828 GET_CURRENT_CONTEXT(ctx
);
2829 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2830 "glFramebufferTextureFaceARB "
2831 "not implemented!");
2833 #endif /* FEATURE_ARB_geometry_shader4 */