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
41 #include "framebuffer.h"
42 #include "glformats.h"
45 #include "multisample.h"
47 #include "renderbuffer.h"
53 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
60 * None of the GL_EXT_framebuffer_object functions are compiled into
67 * When glGenRender/FramebuffersEXT() is called we insert pointers to
68 * these placeholder objects into the hash table.
69 * Later, when the object ID is first bound, we replace the placeholder
70 * with the real frame/renderbuffer.
72 static struct gl_framebuffer DummyFramebuffer
;
73 static struct gl_renderbuffer DummyRenderbuffer
;
75 /* We bind this framebuffer when applications pass a NULL
76 * drawable/surface in make current. */
77 static struct gl_framebuffer IncompleteFramebuffer
;
81 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
87 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
94 _mesa_init_fbobjects(struct gl_context
*ctx
)
96 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
97 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
98 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
99 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
101 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
104 struct gl_framebuffer
*
105 _mesa_get_incomplete_framebuffer(void)
107 return &IncompleteFramebuffer
;
111 * Helper routine for getting a gl_renderbuffer.
113 struct gl_renderbuffer
*
114 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
116 struct gl_renderbuffer
*rb
;
121 rb
= (struct gl_renderbuffer
*)
122 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
128 * Helper routine for getting a gl_framebuffer.
130 struct gl_framebuffer
*
131 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
133 struct gl_framebuffer
*fb
;
138 fb
= (struct gl_framebuffer
*)
139 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
145 * Mark the given framebuffer as invalid. This will force the
146 * test for framebuffer completeness to be done before the framebuffer
150 invalidate_framebuffer(struct gl_framebuffer
*fb
)
152 fb
->_Status
= 0; /* "indeterminate" */
157 * Return the gl_framebuffer object which corresponds to the given
158 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
159 * Check support for GL_EXT_framebuffer_blit to determine if certain
161 * \return gl_framebuffer pointer or NULL if target is illegal
163 static struct gl_framebuffer
*
164 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
166 bool have_fb_blit
= _mesa_is_gles3(ctx
) ||
167 (ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
));
169 case GL_DRAW_FRAMEBUFFER
:
170 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
171 case GL_READ_FRAMEBUFFER
:
172 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
173 case GL_FRAMEBUFFER_EXT
:
174 return ctx
->DrawBuffer
;
182 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
183 * gl_renderbuffer_attachment object.
184 * This function is only used for user-created FB objects, not the
185 * default / window-system FB object.
186 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
187 * the depth buffer attachment point.
189 struct gl_renderbuffer_attachment
*
190 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
195 assert(_mesa_is_user_fbo(fb
));
197 switch (attachment
) {
198 case GL_COLOR_ATTACHMENT0_EXT
:
199 case GL_COLOR_ATTACHMENT1_EXT
:
200 case GL_COLOR_ATTACHMENT2_EXT
:
201 case GL_COLOR_ATTACHMENT3_EXT
:
202 case GL_COLOR_ATTACHMENT4_EXT
:
203 case GL_COLOR_ATTACHMENT5_EXT
:
204 case GL_COLOR_ATTACHMENT6_EXT
:
205 case GL_COLOR_ATTACHMENT7_EXT
:
206 case GL_COLOR_ATTACHMENT8_EXT
:
207 case GL_COLOR_ATTACHMENT9_EXT
:
208 case GL_COLOR_ATTACHMENT10_EXT
:
209 case GL_COLOR_ATTACHMENT11_EXT
:
210 case GL_COLOR_ATTACHMENT12_EXT
:
211 case GL_COLOR_ATTACHMENT13_EXT
:
212 case GL_COLOR_ATTACHMENT14_EXT
:
213 case GL_COLOR_ATTACHMENT15_EXT
:
214 /* Only OpenGL ES 1.x forbids color attachments other than
215 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
218 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
219 if (i
>= ctx
->Const
.MaxColorAttachments
220 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
223 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
224 case GL_DEPTH_STENCIL_ATTACHMENT
:
225 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
228 case GL_DEPTH_ATTACHMENT_EXT
:
229 return &fb
->Attachment
[BUFFER_DEPTH
];
230 case GL_STENCIL_ATTACHMENT_EXT
:
231 return &fb
->Attachment
[BUFFER_STENCIL
];
239 * As above, but only used for getting attachments of the default /
240 * window-system framebuffer (not user-created framebuffer objects).
242 static struct gl_renderbuffer_attachment
*
243 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
246 assert(_mesa_is_winsys_fbo(fb
));
248 if (_mesa_is_gles3(ctx
)) {
249 assert(attachment
== GL_BACK
||
250 attachment
== GL_DEPTH
||
251 attachment
== GL_STENCIL
);
252 switch (attachment
) {
254 /* Since there is no stereo rendering in ES 3.0, only return the
257 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
258 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
259 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
261 return &fb
->Attachment
[BUFFER_DEPTH
];
263 return &fb
->Attachment
[BUFFER_STENCIL
];
267 switch (attachment
) {
269 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
271 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
273 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
275 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
277 if (fb
->Visual
.numAuxBuffers
== 1) {
278 return &fb
->Attachment
[BUFFER_AUX0
];
282 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
284 * "If the default framebuffer is bound to target, then attachment must
285 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
286 * identifying a color buffer; DEPTH, identifying the depth buffer; or
287 * STENCIL, identifying the stencil buffer."
289 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
290 * language. However, revision #33 of the ARB_framebuffer_object spec
293 * "If the default framebuffer is bound to <target>, then <attachment>
294 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
295 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
296 * depth buffer, or the stencil buffer, and <pname> may be
297 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
298 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
300 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
301 * from glext.h, so shipping apps should not use those values.
303 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
304 * support queries of the window system FBO.
307 return &fb
->Attachment
[BUFFER_DEPTH
];
309 return &fb
->Attachment
[BUFFER_STENCIL
];
318 * Remove any texture or renderbuffer attached to the given attachment
319 * point. Update reference counts, etc.
322 _mesa_remove_attachment(struct gl_context
*ctx
,
323 struct gl_renderbuffer_attachment
*att
)
325 if (att
->Type
== GL_TEXTURE
) {
326 ASSERT(att
->Texture
);
327 if (ctx
->Driver
.FinishRenderTexture
) {
328 /* tell driver that we're done rendering to this texture. */
329 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
331 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
332 ASSERT(!att
->Texture
);
334 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
335 ASSERT(!att
->Texture
);
336 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
337 ASSERT(!att
->Renderbuffer
);
340 att
->Complete
= GL_TRUE
;
345 * Bind a texture object to an attachment point.
346 * The previous binding, if any, will be removed first.
349 _mesa_set_texture_attachment(struct gl_context
*ctx
,
350 struct gl_framebuffer
*fb
,
351 struct gl_renderbuffer_attachment
*att
,
352 struct gl_texture_object
*texObj
,
353 GLenum texTarget
, GLuint level
, GLuint zoffset
)
355 if (att
->Texture
== texObj
) {
356 /* re-attaching same texture */
357 ASSERT(att
->Type
== GL_TEXTURE
);
358 if (ctx
->Driver
.FinishRenderTexture
)
359 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
363 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
364 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
365 _mesa_remove_attachment(ctx
, att
);
366 att
->Type
= GL_TEXTURE
;
367 assert(!att
->Texture
);
368 _mesa_reference_texobj(&att
->Texture
, texObj
);
371 /* always update these fields */
372 att
->TextureLevel
= level
;
373 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
374 att
->Zoffset
= zoffset
;
375 att
->Complete
= GL_FALSE
;
377 if (_mesa_get_attachment_teximage(att
)) {
378 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
381 invalidate_framebuffer(fb
);
386 * Bind a renderbuffer to an attachment point.
387 * The previous binding, if any, will be removed first.
390 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
391 struct gl_renderbuffer_attachment
*att
,
392 struct gl_renderbuffer
*rb
)
394 /* XXX check if re-doing same attachment, exit early */
395 _mesa_remove_attachment(ctx
, att
);
396 att
->Type
= GL_RENDERBUFFER_EXT
;
397 att
->Texture
= NULL
; /* just to be safe */
398 att
->Complete
= GL_FALSE
;
399 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
404 * Fallback for ctx->Driver.FramebufferRenderbuffer()
405 * Attach a renderbuffer object to a framebuffer object.
408 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
409 struct gl_framebuffer
*fb
,
410 GLenum attachment
, struct gl_renderbuffer
*rb
)
412 struct gl_renderbuffer_attachment
*att
;
414 _glthread_LOCK_MUTEX(fb
->Mutex
);
416 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
419 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
420 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
421 /* do stencil attachment here (depth already done above) */
422 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
424 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
426 rb
->AttachedAnytime
= GL_TRUE
;
429 _mesa_remove_attachment(ctx
, att
);
432 invalidate_framebuffer(fb
);
434 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
439 * Fallback for ctx->Driver.ValidateFramebuffer()
440 * Check if the renderbuffer's formats are supported by the software
442 * Drivers should probably override this.
445 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
448 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
449 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
451 switch (rb
->_BaseFormat
) {
453 case GL_LUMINANCE_ALPHA
:
458 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
462 switch (rb
->Format
) {
463 /* XXX This list is likely incomplete. */
464 case MESA_FORMAT_RGB9_E5_FLOAT
:
465 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
468 /* render buffer format is supported by software rendering */
477 * Return true if the framebuffer has a combined depth/stencil
478 * renderbuffer attached.
481 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
483 const struct gl_renderbuffer_attachment
*depth
=
484 &fb
->Attachment
[BUFFER_DEPTH
];
485 const struct gl_renderbuffer_attachment
*stencil
=
486 &fb
->Attachment
[BUFFER_STENCIL
];
488 if (depth
->Type
== stencil
->Type
) {
489 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
490 depth
->Renderbuffer
== stencil
->Renderbuffer
)
493 if (depth
->Type
== GL_TEXTURE
&&
494 depth
->Texture
== stencil
->Texture
)
506 att_incomplete(const char *msg
)
508 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
509 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
518 fbo_incomplete(const char *msg
, int index
)
520 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
521 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
527 * Is the given base format a legal format for a color renderbuffer?
530 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
532 switch (baseFormat
) {
537 case GL_LUMINANCE_ALPHA
:
540 return ctx
->API
== API_OPENGL_COMPAT
&&
541 ctx
->Extensions
.ARB_framebuffer_object
;
544 return ctx
->Extensions
.ARB_texture_rg
;
552 * Is the given base format a legal format for a color renderbuffer?
555 is_format_color_renderable(const struct gl_context
*ctx
, gl_format format
, GLenum internalFormat
)
557 const GLenum baseFormat
=
558 _mesa_get_format_base_format(format
);
561 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
562 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
566 /* Reject additional cases for GLES */
567 switch (internalFormat
) {
587 if (format
== MESA_FORMAT_ARGB2101010
&& internalFormat
!= GL_RGB10_A2
) {
596 * Is the given base format a legal format for a depth/stencil renderbuffer?
599 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
601 switch (baseFormat
) {
602 case GL_DEPTH_COMPONENT
:
603 case GL_DEPTH_STENCIL_EXT
:
612 * Test if an attachment point is complete and update its Complete field.
613 * \param format if GL_COLOR, this is a color attachment point,
614 * if GL_DEPTH, this is a depth component attachment point,
615 * if GL_STENCIL, this is a stencil component attachment point.
618 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
619 struct gl_renderbuffer_attachment
*att
)
621 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
623 /* assume complete */
624 att
->Complete
= GL_TRUE
;
626 /* Look for reasons why the attachment might be incomplete */
627 if (att
->Type
== GL_TEXTURE
) {
628 const struct gl_texture_object
*texObj
= att
->Texture
;
629 struct gl_texture_image
*texImage
;
633 att_incomplete("no texobj");
634 att
->Complete
= GL_FALSE
;
638 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
640 att_incomplete("no teximage");
641 att
->Complete
= GL_FALSE
;
644 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
645 att_incomplete("teximage width/height=0");
646 printf("texobj = %u\n", texObj
->Name
);
647 printf("level = %d\n", att
->TextureLevel
);
648 att
->Complete
= GL_FALSE
;
651 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
652 att_incomplete("bad z offset");
653 att
->Complete
= GL_FALSE
;
657 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
659 if (format
== GL_COLOR
) {
660 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
661 att_incomplete("bad format");
662 att
->Complete
= GL_FALSE
;
665 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
666 att_incomplete("compressed internalformat");
667 att
->Complete
= GL_FALSE
;
671 else if (format
== GL_DEPTH
) {
672 if (baseFormat
== GL_DEPTH_COMPONENT
) {
675 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
676 ctx
->Extensions
.ARB_depth_texture
&&
677 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
681 att
->Complete
= GL_FALSE
;
682 att_incomplete("bad depth format");
687 ASSERT(format
== GL_STENCIL
);
688 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
689 ctx
->Extensions
.ARB_depth_texture
&&
690 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
694 /* no such thing as stencil-only textures */
695 att_incomplete("illegal stencil texture");
696 att
->Complete
= GL_FALSE
;
701 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
702 const GLenum baseFormat
=
703 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
705 ASSERT(att
->Renderbuffer
);
706 if (!att
->Renderbuffer
->InternalFormat
||
707 att
->Renderbuffer
->Width
< 1 ||
708 att
->Renderbuffer
->Height
< 1) {
709 att_incomplete("0x0 renderbuffer");
710 att
->Complete
= GL_FALSE
;
713 if (format
== GL_COLOR
) {
714 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
715 att_incomplete("bad renderbuffer color format");
716 att
->Complete
= GL_FALSE
;
720 else if (format
== GL_DEPTH
) {
721 if (baseFormat
== GL_DEPTH_COMPONENT
) {
724 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
725 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
729 att_incomplete("bad renderbuffer depth format");
730 att
->Complete
= GL_FALSE
;
735 assert(format
== GL_STENCIL
);
736 if (baseFormat
== GL_STENCIL_INDEX
) {
739 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
740 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
744 att
->Complete
= GL_FALSE
;
745 att_incomplete("bad renderbuffer stencil format");
751 ASSERT(att
->Type
== GL_NONE
);
759 * Test if the given framebuffer object is complete and update its
760 * Status field with the results.
761 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
762 * driver to make hardware-specific validation/completeness checks.
763 * Also update the framebuffer's Width and Height fields if the
764 * framebuffer is complete.
767 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
768 struct gl_framebuffer
*fb
)
771 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
772 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
773 GLint numSamples
= -1;
774 GLint fixedSampleLocations
= -1;
778 assert(_mesa_is_user_fbo(fb
));
780 /* we're changing framebuffer fields here */
781 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
786 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
787 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
789 /* Start at -2 to more easily loop over all attachment points.
794 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
795 struct gl_renderbuffer_attachment
*att
;
800 * XXX for ARB_fbo, only check color buffers that are named by
801 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
804 /* check for attachment completeness
807 att
= &fb
->Attachment
[BUFFER_DEPTH
];
808 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
809 if (!att
->Complete
) {
810 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
811 fbo_incomplete("depth attachment incomplete", -1);
816 att
= &fb
->Attachment
[BUFFER_STENCIL
];
817 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
818 if (!att
->Complete
) {
819 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
820 fbo_incomplete("stencil attachment incomplete", -1);
825 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
826 test_attachment_completeness(ctx
, GL_COLOR
, att
);
827 if (!att
->Complete
) {
828 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
829 fbo_incomplete("color attachment incomplete", i
);
834 /* get width, height, format of the renderbuffer/texture
836 if (att
->Type
== GL_TEXTURE
) {
837 const struct gl_texture_image
*texImg
=
838 _mesa_get_attachment_teximage(att
);
839 minWidth
= MIN2(minWidth
, texImg
->Width
);
840 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
841 minHeight
= MIN2(minHeight
, texImg
->Height
);
842 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
843 f
= texImg
->_BaseFormat
;
844 attFormat
= texImg
->TexFormat
;
847 if (!is_format_color_renderable(ctx
, attFormat
, texImg
->InternalFormat
) &&
848 !is_legal_depth_format(ctx
, f
)) {
849 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
850 fbo_incomplete("texture attachment incomplete", -1);
855 numSamples
= texImg
->NumSamples
;
856 else if (numSamples
!= texImg
->NumSamples
) {
857 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
858 fbo_incomplete("inconsistent sample count", -1);
862 if (fixedSampleLocations
< 0)
863 fixedSampleLocations
= texImg
->FixedSampleLocations
;
864 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
865 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
866 fbo_incomplete("inconsistent fixed sample locations", -1);
870 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
871 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
872 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
873 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
874 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
875 f
= att
->Renderbuffer
->InternalFormat
;
876 attFormat
= att
->Renderbuffer
->Format
;
880 numSamples
= att
->Renderbuffer
->NumSamples
;
881 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
882 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
883 fbo_incomplete("inconsistent sample count", -1);
887 /* RENDERBUFFER has fixedSampleLocations implicitly true */
888 if (fixedSampleLocations
< 0)
889 fixedSampleLocations
= GL_TRUE
;
890 else if (fixedSampleLocations
!= GL_TRUE
) {
891 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
892 fbo_incomplete("inconsistent fixed sample locations", -1);
897 assert(att
->Type
== GL_NONE
);
901 /* check if integer color */
902 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
904 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
906 GLenum type
= _mesa_get_format_datatype(attFormat
);
908 fb
->_AllColorBuffersFixedPoint
=
909 fb
->_AllColorBuffersFixedPoint
&&
910 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
912 fb
->_HasSNormOrFloatColorBuffer
=
913 fb
->_HasSNormOrFloatColorBuffer
||
914 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
917 /* Error-check width, height, format */
918 if (numImages
== 1) {
925 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
926 /* check that width, height, format are same */
927 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
928 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
929 fbo_incomplete("width or height mismatch", -1);
932 /* check that all color buffers are the same format */
933 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
934 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
935 fbo_incomplete("format mismatch", -1);
941 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
943 if (att
->Type
== GL_RENDERBUFFER
&&
944 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
945 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
946 fbo_incomplete("unsupported renderbuffer format", i
);
951 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
952 /* Check that all DrawBuffers are present */
953 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
954 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
955 const struct gl_renderbuffer_attachment
*att
956 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
958 if (att
->Type
== GL_NONE
) {
959 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
960 fbo_incomplete("missing drawbuffer", j
);
966 /* Check that the ReadBuffer is present */
967 if (fb
->ColorReadBuffer
!= GL_NONE
) {
968 const struct gl_renderbuffer_attachment
*att
969 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
971 if (att
->Type
== GL_NONE
) {
972 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
973 fbo_incomplete("missing readbuffer", -1);
979 if (numImages
== 0) {
980 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
981 fbo_incomplete("no attachments", -1);
985 /* Provisionally set status = COMPLETE ... */
986 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
988 /* ... but the driver may say the FB is incomplete.
989 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
992 if (ctx
->Driver
.ValidateFramebuffer
) {
993 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
994 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
995 fbo_incomplete("driver marked FBO as incomplete", -1);
999 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1001 * Note that if ARB_framebuffer_object is supported and the attached
1002 * renderbuffers/textures are different sizes, the framebuffer
1003 * width/height will be set to the smallest width/height.
1005 fb
->Width
= minWidth
;
1006 fb
->Height
= minHeight
;
1008 /* finally, update the visual info for the framebuffer */
1009 _mesa_update_framebuffer_visual(ctx
, fb
);
1014 GLboolean GLAPIENTRY
1015 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1017 GET_CURRENT_CONTEXT(ctx
);
1018 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1020 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1021 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1029 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1031 struct gl_renderbuffer
*newRb
;
1032 GET_CURRENT_CONTEXT(ctx
);
1034 if (target
!= GL_RENDERBUFFER_EXT
) {
1035 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1039 /* No need to flush here since the render buffer binding has no
1040 * effect on rendering state.
1044 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1045 if (newRb
== &DummyRenderbuffer
) {
1046 /* ID was reserved, but no real renderbuffer object made yet */
1050 && _mesa_is_desktop_gl(ctx
)
1051 && ctx
->Extensions
.ARB_framebuffer_object
) {
1052 /* All RB IDs must be Gen'd */
1053 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1058 /* create new renderbuffer object */
1059 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1061 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1064 ASSERT(newRb
->AllocStorage
);
1065 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1066 newRb
->RefCount
= 1; /* referenced by hash table */
1073 ASSERT(newRb
!= &DummyRenderbuffer
);
1075 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1080 * If the given renderbuffer is anywhere attached to the framebuffer, detach
1082 * This is used when a renderbuffer object is deleted.
1083 * The spec calls for unbinding.
1086 detach_renderbuffer(struct gl_context
*ctx
,
1087 struct gl_framebuffer
*fb
,
1088 struct gl_renderbuffer
*rb
)
1091 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1092 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
1093 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
1096 invalidate_framebuffer(fb
);
1101 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1104 GET_CURRENT_CONTEXT(ctx
);
1106 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1108 for (i
= 0; i
< n
; i
++) {
1109 if (renderbuffers
[i
] > 0) {
1110 struct gl_renderbuffer
*rb
;
1111 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1113 /* check if deleting currently bound renderbuffer object */
1114 if (rb
== ctx
->CurrentRenderbuffer
) {
1116 ASSERT(rb
->RefCount
>= 2);
1117 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1120 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1121 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1123 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1124 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1125 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1128 /* Remove from hash table immediately, to free the ID.
1129 * But the object will not be freed until it's no longer
1130 * referenced anywhere else.
1132 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1134 if (rb
!= &DummyRenderbuffer
) {
1135 /* no longer referenced by hash table */
1136 _mesa_reference_renderbuffer(&rb
, NULL
);
1145 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1147 GET_CURRENT_CONTEXT(ctx
);
1152 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1159 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1161 for (i
= 0; i
< n
; i
++) {
1162 GLuint name
= first
+ i
;
1163 renderbuffers
[i
] = name
;
1164 /* insert dummy placeholder into hash table */
1165 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1166 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1167 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1173 * Given an internal format token for a render buffer, return the
1174 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1175 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1176 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1178 * This is similar to _mesa_base_tex_format() but the set of valid
1179 * internal formats is different.
1181 * Note that even if a format is determined to be legal here, validation
1182 * of the FBO may fail if the format is not supported by the driver/GPU.
1184 * \param internalFormat as passed to glRenderbufferStorage()
1185 * \return the base internal format, or 0 if internalFormat is illegal
1188 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1191 * Notes: some formats such as alpha, luminance, etc. were added
1192 * with GL_ARB_framebuffer_object.
1194 switch (internalFormat
) {
1200 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1205 case GL_LUMINANCE12
:
1206 case GL_LUMINANCE16
:
1207 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1209 case GL_LUMINANCE_ALPHA
:
1210 case GL_LUMINANCE4_ALPHA4
:
1211 case GL_LUMINANCE6_ALPHA2
:
1212 case GL_LUMINANCE8_ALPHA8
:
1213 case GL_LUMINANCE12_ALPHA4
:
1214 case GL_LUMINANCE12_ALPHA12
:
1215 case GL_LUMINANCE16_ALPHA16
:
1216 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1217 ? GL_LUMINANCE_ALPHA
: 0;
1221 case GL_INTENSITY12
:
1222 case GL_INTENSITY16
:
1223 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1234 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1236 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1245 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1247 case GL_SRGB8_ALPHA8_EXT
:
1248 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1249 case GL_STENCIL_INDEX
:
1250 case GL_STENCIL_INDEX1_EXT
:
1251 case GL_STENCIL_INDEX4_EXT
:
1252 case GL_STENCIL_INDEX16_EXT
:
1253 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1254 * OpenGL ES, but Mesa does not currently support them.
1256 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1257 case GL_STENCIL_INDEX8_EXT
:
1258 return GL_STENCIL_INDEX
;
1259 case GL_DEPTH_COMPONENT
:
1260 case GL_DEPTH_COMPONENT32
:
1261 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1262 case GL_DEPTH_COMPONENT16
:
1263 case GL_DEPTH_COMPONENT24
:
1264 return GL_DEPTH_COMPONENT
;
1265 case GL_DEPTH_STENCIL_EXT
:
1266 return _mesa_is_desktop_gl(ctx
)
1267 && ctx
->Extensions
.EXT_packed_depth_stencil
1268 ? GL_DEPTH_STENCIL_EXT
: 0;
1269 case GL_DEPTH24_STENCIL8_EXT
:
1270 return ctx
->Extensions
.EXT_packed_depth_stencil
1271 ? GL_DEPTH_STENCIL_EXT
: 0;
1272 case GL_DEPTH_COMPONENT32F
:
1273 return ctx
->Version
>= 30
1274 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1275 ? GL_DEPTH_COMPONENT
: 0;
1276 case GL_DEPTH32F_STENCIL8
:
1277 return ctx
->Version
>= 30
1278 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1279 ? GL_DEPTH_STENCIL
: 0;
1282 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1285 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1289 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1292 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1294 /* signed normalized texture formats */
1298 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1303 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1307 case GL_RGB16_SNORM
:
1308 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1311 case GL_RGBA8_SNORM
:
1312 case GL_RGBA16_SNORM
:
1313 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1315 case GL_ALPHA_SNORM
:
1316 case GL_ALPHA8_SNORM
:
1317 case GL_ALPHA16_SNORM
:
1318 return ctx
->API
== API_OPENGL_COMPAT
&&
1319 ctx
->Extensions
.EXT_texture_snorm
&&
1320 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1323 return ((_mesa_is_desktop_gl(ctx
) &&
1324 ctx
->Extensions
.ARB_texture_rg
&&
1325 ctx
->Extensions
.ARB_texture_float
) ||
1326 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1330 return ((_mesa_is_desktop_gl(ctx
) &&
1331 ctx
->Extensions
.ARB_texture_rg
&&
1332 ctx
->Extensions
.ARB_texture_float
) ||
1333 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1337 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1341 return ((_mesa_is_desktop_gl(ctx
) &&
1342 ctx
->Extensions
.ARB_texture_float
) ||
1343 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1345 case GL_ALPHA16F_ARB
:
1346 case GL_ALPHA32F_ARB
:
1347 return ctx
->API
== API_OPENGL_COMPAT
&&
1348 ctx
->Extensions
.ARB_texture_float
&&
1349 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1350 case GL_LUMINANCE16F_ARB
:
1351 case GL_LUMINANCE32F_ARB
:
1352 return ctx
->API
== API_OPENGL_COMPAT
&&
1353 ctx
->Extensions
.ARB_texture_float
&&
1354 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1355 case GL_LUMINANCE_ALPHA16F_ARB
:
1356 case GL_LUMINANCE_ALPHA32F_ARB
:
1357 return ctx
->API
== API_OPENGL_COMPAT
&&
1358 ctx
->Extensions
.ARB_texture_float
&&
1359 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1360 case GL_INTENSITY16F_ARB
:
1361 case GL_INTENSITY32F_ARB
:
1362 return ctx
->API
== API_OPENGL_COMPAT
&&
1363 ctx
->Extensions
.ARB_texture_float
&&
1364 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1366 return (_mesa_is_desktop_gl(ctx
)
1367 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1369 case GL_R11F_G11F_B10F
:
1370 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1371 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1374 case GL_RGBA8UI_EXT
:
1375 case GL_RGBA16UI_EXT
:
1376 case GL_RGBA32UI_EXT
:
1378 case GL_RGBA16I_EXT
:
1379 case GL_RGBA32I_EXT
:
1380 return ctx
->Version
>= 30
1381 || (_mesa_is_desktop_gl(ctx
) &&
1382 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1385 case GL_RGB16UI_EXT
:
1386 case GL_RGB32UI_EXT
:
1390 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1398 return ctx
->Version
>= 30
1399 || (_mesa_is_desktop_gl(ctx
) &&
1400 ctx
->Extensions
.ARB_texture_rg
&&
1401 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1409 return ctx
->Version
>= 30
1410 || (_mesa_is_desktop_gl(ctx
) &&
1411 ctx
->Extensions
.ARB_texture_rg
&&
1412 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1414 case GL_INTENSITY8I_EXT
:
1415 case GL_INTENSITY8UI_EXT
:
1416 case GL_INTENSITY16I_EXT
:
1417 case GL_INTENSITY16UI_EXT
:
1418 case GL_INTENSITY32I_EXT
:
1419 case GL_INTENSITY32UI_EXT
:
1420 return ctx
->API
== API_OPENGL_COMPAT
&&
1421 ctx
->Extensions
.EXT_texture_integer
&&
1422 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1424 case GL_LUMINANCE8I_EXT
:
1425 case GL_LUMINANCE8UI_EXT
:
1426 case GL_LUMINANCE16I_EXT
:
1427 case GL_LUMINANCE16UI_EXT
:
1428 case GL_LUMINANCE32I_EXT
:
1429 case GL_LUMINANCE32UI_EXT
:
1430 return ctx
->API
== API_OPENGL_COMPAT
&&
1431 ctx
->Extensions
.EXT_texture_integer
&&
1432 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1434 case GL_LUMINANCE_ALPHA8I_EXT
:
1435 case GL_LUMINANCE_ALPHA8UI_EXT
:
1436 case GL_LUMINANCE_ALPHA16I_EXT
:
1437 case GL_LUMINANCE_ALPHA16UI_EXT
:
1438 case GL_LUMINANCE_ALPHA32I_EXT
:
1439 case GL_LUMINANCE_ALPHA32UI_EXT
:
1440 return ctx
->API
== API_OPENGL_COMPAT
&&
1441 ctx
->Extensions
.EXT_texture_integer
&&
1442 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1444 case GL_ALPHA8I_EXT
:
1445 case GL_ALPHA8UI_EXT
:
1446 case GL_ALPHA16I_EXT
:
1447 case GL_ALPHA16UI_EXT
:
1448 case GL_ALPHA32I_EXT
:
1449 case GL_ALPHA32UI_EXT
:
1450 return ctx
->API
== API_OPENGL_COMPAT
&&
1451 ctx
->Extensions
.EXT_texture_integer
&&
1452 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1455 return (_mesa_is_desktop_gl(ctx
) &&
1456 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1457 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1460 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1469 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1472 invalidate_rb(GLuint key
, void *data
, void *userData
)
1474 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1475 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1477 /* If this is a user-created FBO */
1478 if (_mesa_is_user_fbo(fb
)) {
1480 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1481 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1482 if (att
->Type
== GL_RENDERBUFFER
&&
1483 att
->Renderbuffer
== rb
) {
1484 /* Mark fb status as indeterminate to force re-validation */
1493 /** sentinal value, see below */
1494 #define NO_SAMPLES 1000
1498 * Helper function used by _mesa_RenderbufferStorage() and
1499 * _mesa_RenderbufferStorageMultisample().
1500 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1503 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1504 GLsizei width
, GLsizei height
, GLsizei samples
)
1506 const char *func
= samples
== NO_SAMPLES
?
1507 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1508 struct gl_renderbuffer
*rb
;
1510 GLenum sample_count_error
;
1511 GET_CURRENT_CONTEXT(ctx
);
1513 if (MESA_VERBOSE
& VERBOSE_API
) {
1514 if (samples
== NO_SAMPLES
)
1515 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1517 _mesa_lookup_enum_by_nr(target
),
1518 _mesa_lookup_enum_by_nr(internalFormat
),
1521 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1523 _mesa_lookup_enum_by_nr(target
),
1524 _mesa_lookup_enum_by_nr(internalFormat
),
1525 width
, height
, samples
);
1528 if (target
!= GL_RENDERBUFFER_EXT
) {
1529 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1533 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1534 if (baseFormat
== 0) {
1535 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1536 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1540 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1541 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1545 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1546 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1550 if (samples
== NO_SAMPLES
) {
1551 /* NumSamples == 0 indicates non-multisampling */
1555 /* check the sample count;
1556 * note: driver may choose to use more samples than what's requested
1558 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1559 internalFormat
, samples
);
1560 if (sample_count_error
!= GL_NO_ERROR
) {
1561 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1566 rb
= ctx
->CurrentRenderbuffer
;
1568 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1572 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1574 if (rb
->InternalFormat
== internalFormat
&&
1575 rb
->Width
== (GLuint
) width
&&
1576 rb
->Height
== (GLuint
) height
&&
1577 rb
->NumSamples
== samples
) {
1578 /* no change in allocation needed */
1582 /* These MUST get set by the AllocStorage func */
1583 rb
->Format
= MESA_FORMAT_NONE
;
1584 rb
->NumSamples
= samples
;
1586 /* Now allocate the storage */
1587 ASSERT(rb
->AllocStorage
);
1588 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1589 /* No error - check/set fields now */
1590 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1591 assert(rb
->Width
== (GLuint
) width
);
1592 assert(rb
->Height
== (GLuint
) height
);
1593 rb
->InternalFormat
= internalFormat
;
1594 rb
->_BaseFormat
= baseFormat
;
1595 assert(rb
->_BaseFormat
!= 0);
1598 /* Probably ran out of memory - clear the fields */
1601 rb
->Format
= MESA_FORMAT_NONE
;
1602 rb
->InternalFormat
= GL_NONE
;
1603 rb
->_BaseFormat
= GL_NONE
;
1607 /* Invalidate the framebuffers the renderbuffer is attached in. */
1608 if (rb
->AttachedAnytime
) {
1609 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1615 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1617 struct gl_renderbuffer
*rb
;
1618 GET_CURRENT_CONTEXT(ctx
);
1620 if (!ctx
->Extensions
.OES_EGL_image
) {
1621 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1622 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1626 if (target
!= GL_RENDERBUFFER
) {
1627 _mesa_error(ctx
, GL_INVALID_ENUM
,
1628 "EGLImageTargetRenderbufferStorageOES");
1632 rb
= ctx
->CurrentRenderbuffer
;
1634 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1635 "EGLImageTargetRenderbufferStorageOES");
1639 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1641 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1646 * Helper function for _mesa_GetRenderbufferParameteriv() and
1647 * _mesa_GetFramebufferAttachmentParameteriv()
1648 * We have to be careful to respect the base format. For example, if a
1649 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1650 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1651 * we need to return zero.
1654 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1656 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1657 return _mesa_get_format_bits(format
, pname
);
1665 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1666 GLsizei width
, GLsizei height
)
1668 /* GL_ARB_fbo says calling this function is equivalent to calling
1669 * glRenderbufferStorageMultisample() with samples=0. We pass in
1670 * a token value here just for error reporting purposes.
1672 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1677 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1678 GLenum internalFormat
,
1679 GLsizei width
, GLsizei height
)
1681 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1686 * OpenGL ES version of glRenderBufferStorage.
1689 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1690 GLsizei width
, GLsizei height
)
1692 switch (internalFormat
) {
1694 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1695 /* choose a closest format */
1696 internalFormat
= GL_RGB5
;
1702 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1707 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1709 struct gl_renderbuffer
*rb
;
1710 GET_CURRENT_CONTEXT(ctx
);
1712 if (target
!= GL_RENDERBUFFER_EXT
) {
1713 _mesa_error(ctx
, GL_INVALID_ENUM
,
1714 "glGetRenderbufferParameterivEXT(target)");
1718 rb
= ctx
->CurrentRenderbuffer
;
1720 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1721 "glGetRenderbufferParameterivEXT");
1725 /* No need to flush here since we're just quering state which is
1726 * not effected by rendering.
1730 case GL_RENDERBUFFER_WIDTH_EXT
:
1731 *params
= rb
->Width
;
1733 case GL_RENDERBUFFER_HEIGHT_EXT
:
1734 *params
= rb
->Height
;
1736 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1737 *params
= rb
->InternalFormat
;
1739 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1740 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1741 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1742 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1743 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1744 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1745 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1747 case GL_RENDERBUFFER_SAMPLES
:
1748 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1749 || _mesa_is_gles3(ctx
)) {
1750 *params
= rb
->NumSamples
;
1755 _mesa_error(ctx
, GL_INVALID_ENUM
,
1756 "glGetRenderbufferParameterivEXT(target)");
1762 GLboolean GLAPIENTRY
1763 _mesa_IsFramebuffer(GLuint framebuffer
)
1765 GET_CURRENT_CONTEXT(ctx
);
1766 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1768 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1769 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1777 * Check if any of the attachments of the given framebuffer are textures
1778 * (render to texture). Call ctx->Driver.RenderTexture() for such
1782 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1785 ASSERT(ctx
->Driver
.RenderTexture
);
1787 if (_mesa_is_winsys_fbo(fb
))
1788 return; /* can't render to texture with winsys framebuffers */
1790 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1791 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1792 if (att
->Texture
&& _mesa_get_attachment_teximage(att
)) {
1793 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1800 * Examine all the framebuffer's attachments to see if any are textures.
1801 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1802 * notify the device driver that the texture image may have changed.
1805 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1807 if (_mesa_is_winsys_fbo(fb
))
1808 return; /* can't render to texture with winsys framebuffers */
1810 if (ctx
->Driver
.FinishRenderTexture
) {
1812 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1813 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1814 if (att
->Texture
&& att
->Renderbuffer
) {
1815 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1823 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
1825 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1826 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1827 GLboolean bindReadBuf
, bindDrawBuf
;
1828 GET_CURRENT_CONTEXT(ctx
);
1831 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1832 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1833 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1837 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1838 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1839 "glBindFramebufferEXT(unsupported)");
1844 case GL_DRAW_FRAMEBUFFER_EXT
:
1845 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1846 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1849 bindDrawBuf
= GL_TRUE
;
1850 bindReadBuf
= GL_FALSE
;
1852 case GL_READ_FRAMEBUFFER_EXT
:
1853 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1854 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1857 bindDrawBuf
= GL_FALSE
;
1858 bindReadBuf
= GL_TRUE
;
1860 case GL_FRAMEBUFFER_EXT
:
1861 bindDrawBuf
= GL_TRUE
;
1862 bindReadBuf
= GL_TRUE
;
1865 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1870 /* Binding a user-created framebuffer object */
1871 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1872 if (newDrawFb
== &DummyFramebuffer
) {
1873 /* ID was reserved, but no real framebuffer object made yet */
1877 && _mesa_is_desktop_gl(ctx
)
1878 && ctx
->Extensions
.ARB_framebuffer_object
) {
1879 /* All FBO IDs must be Gen'd */
1880 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1885 /* create new framebuffer object */
1886 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1888 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1891 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1893 newReadFb
= newDrawFb
;
1896 /* Binding the window system framebuffer (which was originally set
1897 * with MakeCurrent).
1899 newDrawFb
= ctx
->WinSysDrawBuffer
;
1900 newReadFb
= ctx
->WinSysReadBuffer
;
1904 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1906 /* save pointers to current/old framebuffers */
1907 oldDrawFb
= ctx
->DrawBuffer
;
1908 oldReadFb
= ctx
->ReadBuffer
;
1910 /* check if really changing bindings */
1911 if (oldDrawFb
== newDrawFb
)
1912 bindDrawBuf
= GL_FALSE
;
1913 if (oldReadFb
== newReadFb
)
1914 bindReadBuf
= GL_FALSE
;
1917 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1919 * We also check if we're beginning and/or ending render-to-texture.
1920 * When a framebuffer with texture attachments is unbound, call
1921 * ctx->Driver.FinishRenderTexture().
1922 * When a framebuffer with texture attachments is bound, call
1923 * ctx->Driver.RenderTexture().
1925 * Note that if the ReadBuffer has texture attachments we don't consider
1926 * that a render-to-texture case.
1929 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1931 /* check if old readbuffer was render-to-texture */
1932 check_end_texture_render(ctx
, oldReadFb
);
1934 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1938 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1940 /* check if old framebuffer had any texture attachments */
1942 check_end_texture_render(ctx
, oldDrawFb
);
1944 /* check if newly bound framebuffer has any texture attachments */
1945 check_begin_texture_render(ctx
, newDrawFb
);
1947 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1950 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1951 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1957 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
1960 GET_CURRENT_CONTEXT(ctx
);
1962 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1964 for (i
= 0; i
< n
; i
++) {
1965 if (framebuffers
[i
] > 0) {
1966 struct gl_framebuffer
*fb
;
1967 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1969 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1971 /* check if deleting currently bound framebuffer object */
1972 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1973 /* separate draw/read binding points */
1974 if (fb
== ctx
->DrawBuffer
) {
1976 ASSERT(fb
->RefCount
>= 2);
1977 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1979 if (fb
== ctx
->ReadBuffer
) {
1981 ASSERT(fb
->RefCount
>= 2);
1982 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT
, 0);
1986 /* only one binding point for read/draw buffers */
1987 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1989 ASSERT(fb
->RefCount
>= 2);
1990 _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT
, 0);
1994 /* remove from hash table immediately, to free the ID */
1995 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1997 if (fb
!= &DummyFramebuffer
) {
1998 /* But the object will not be freed until it's no longer
1999 * bound in any context.
2001 _mesa_reference_framebuffer(&fb
, NULL
);
2010 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2012 GET_CURRENT_CONTEXT(ctx
);
2017 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2024 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2026 for (i
= 0; i
< n
; i
++) {
2027 GLuint name
= first
+ i
;
2028 framebuffers
[i
] = name
;
2029 /* insert dummy placeholder into hash table */
2030 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
2031 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2032 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
2039 _mesa_CheckFramebufferStatus(GLenum target
)
2041 struct gl_framebuffer
*buffer
;
2042 GET_CURRENT_CONTEXT(ctx
);
2044 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2046 if (MESA_VERBOSE
& VERBOSE_API
)
2047 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2048 _mesa_lookup_enum_by_nr(target
));
2050 buffer
= get_framebuffer_target(ctx
, target
);
2052 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2056 if (_mesa_is_winsys_fbo(buffer
)) {
2057 /* The window system / default framebuffer is always complete */
2058 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2061 /* No need to flush here */
2063 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2064 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2067 return buffer
->_Status
;
2072 * Replicate the src attachment point. Used by framebuffer_texture() when
2073 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2074 * GL_STENCIL_ATTACHMENT.
2077 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2078 gl_buffer_index dst
,
2079 gl_buffer_index src
)
2081 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2082 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2084 assert(src_att
->Texture
!= NULL
);
2085 assert(src_att
->Renderbuffer
!= NULL
);
2087 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2088 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2089 dst_att
->Type
= src_att
->Type
;
2090 dst_att
->Complete
= src_att
->Complete
;
2091 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2092 dst_att
->Zoffset
= src_att
->Zoffset
;
2097 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2098 * glFramebufferTextureLayerEXT().
2099 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
2100 * get textarget=0 in that case.
2103 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2104 GLenum attachment
, GLenum textarget
, GLuint texture
,
2105 GLint level
, GLint zoffset
)
2107 struct gl_renderbuffer_attachment
*att
;
2108 struct gl_texture_object
*texObj
= NULL
;
2109 struct gl_framebuffer
*fb
;
2110 GLenum maxLevelsTarget
;
2112 fb
= get_framebuffer_target(ctx
, target
);
2114 _mesa_error(ctx
, GL_INVALID_ENUM
,
2115 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2119 /* check framebuffer binding */
2120 if (_mesa_is_winsys_fbo(fb
)) {
2121 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2122 "glFramebufferTexture%sEXT", caller
);
2126 /* The textarget, level, and zoffset parameters are only validated if
2127 * texture is non-zero.
2130 GLboolean err
= GL_TRUE
;
2132 texObj
= _mesa_lookup_texture(ctx
, texture
);
2133 if (texObj
!= NULL
) {
2134 if (textarget
== 0) {
2135 /* If textarget == 0 it means we're being called by
2136 * glFramebufferTextureLayer() and textarget is not used.
2137 * The only legal texture types for that function are 3D and
2138 * 1D/2D arrays textures.
2140 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2141 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2142 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2143 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2144 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2147 /* Make sure textarget is consistent with the texture's type */
2148 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2149 ? !_mesa_is_cube_face(textarget
)
2150 : (texObj
->Target
!= textarget
);
2154 /* can't render to a non-existant texture */
2155 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2156 "glFramebufferTexture%sEXT(non existant texture)",
2162 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2163 "glFramebufferTexture%sEXT(texture target mismatch)",
2168 if (texObj
->Target
== GL_TEXTURE_3D
) {
2169 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2170 if (zoffset
< 0 || zoffset
>= maxSize
) {
2171 _mesa_error(ctx
, GL_INVALID_VALUE
,
2172 "glFramebufferTexture%sEXT(zoffset)", caller
);
2176 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2177 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2178 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2179 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2181 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2182 _mesa_error(ctx
, GL_INVALID_VALUE
,
2183 "glFramebufferTexture%sEXT(layer)", caller
);
2188 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2190 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2191 _mesa_error(ctx
, GL_INVALID_VALUE
,
2192 "glFramebufferTexture%sEXT(level)", caller
);
2197 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2199 _mesa_error(ctx
, GL_INVALID_ENUM
,
2200 "glFramebufferTexture%sEXT(attachment)", caller
);
2204 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2206 _glthread_LOCK_MUTEX(fb
->Mutex
);
2208 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2209 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2210 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2211 _mesa_tex_target_to_face(textarget
) ==
2212 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2213 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2214 /* The texture object is already attached to the stencil attachment
2215 * point. Don't create a new renderbuffer; just reuse the stencil
2216 * attachment's. This is required to prevent a GL error in
2217 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2219 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2221 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2222 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2223 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2224 _mesa_tex_target_to_face(textarget
) ==
2225 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2226 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2227 /* As above, but with depth and stencil transposed. */
2228 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2231 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2233 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2234 /* Above we created a new renderbuffer and attached it to the
2235 * depth attachment point. Now attach it to the stencil attachment
2238 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2239 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2244 /* Set the render-to-texture flag. We'll check this flag in
2245 * glTexImage() and friends to determine if we need to revalidate
2246 * any FBOs that might be rendering into this texture.
2247 * This flag never gets cleared since it's non-trivial to determine
2248 * when all FBOs might be done rendering to this texture. That's OK
2249 * though since it's uncommon to render to a texture then repeatedly
2250 * call glTexImage() to change images in the texture.
2252 texObj
->_RenderToTexture
= GL_TRUE
;
2255 _mesa_remove_attachment(ctx
, att
);
2256 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2257 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2258 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2262 invalidate_framebuffer(fb
);
2264 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2270 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2271 GLenum textarget
, GLuint texture
, GLint level
)
2273 GET_CURRENT_CONTEXT(ctx
);
2278 switch (textarget
) {
2282 case GL_TEXTURE_1D_ARRAY
:
2283 error
= !ctx
->Extensions
.EXT_texture_array
;
2290 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2291 "glFramebufferTexture1DEXT(textarget=%s)",
2292 _mesa_lookup_enum_by_nr(textarget
));
2297 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2303 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2304 GLenum textarget
, GLuint texture
, GLint level
)
2306 GET_CURRENT_CONTEXT(ctx
);
2311 switch (textarget
) {
2315 case GL_TEXTURE_RECTANGLE
:
2316 error
= _mesa_is_gles(ctx
)
2317 || !ctx
->Extensions
.NV_texture_rectangle
;
2319 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2320 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2321 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2322 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2323 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2324 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2325 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2327 case GL_TEXTURE_2D_ARRAY
:
2328 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2329 || !ctx
->Extensions
.EXT_texture_array
;
2331 case GL_TEXTURE_2D_MULTISAMPLE
:
2332 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2333 error
= _mesa_is_gles(ctx
)
2334 || !ctx
->Extensions
.ARB_texture_multisample
;
2341 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2342 "glFramebufferTexture2DEXT(textarget=%s)",
2343 _mesa_lookup_enum_by_nr(textarget
));
2348 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2354 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2355 GLenum textarget
, GLuint texture
,
2356 GLint level
, GLint zoffset
)
2358 GET_CURRENT_CONTEXT(ctx
);
2360 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2361 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2362 "glFramebufferTexture3DEXT(textarget)");
2366 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2372 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2373 GLuint texture
, GLint level
, GLint layer
)
2375 GET_CURRENT_CONTEXT(ctx
);
2377 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2383 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2384 GLenum renderbufferTarget
,
2385 GLuint renderbuffer
)
2387 struct gl_renderbuffer_attachment
*att
;
2388 struct gl_framebuffer
*fb
;
2389 struct gl_renderbuffer
*rb
;
2390 GET_CURRENT_CONTEXT(ctx
);
2392 fb
= get_framebuffer_target(ctx
, target
);
2394 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2398 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2399 _mesa_error(ctx
, GL_INVALID_ENUM
,
2400 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2404 if (_mesa_is_winsys_fbo(fb
)) {
2405 /* Can't attach new renderbuffers to a window system framebuffer */
2406 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2410 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2412 _mesa_error(ctx
, GL_INVALID_ENUM
,
2413 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2414 _mesa_lookup_enum_by_nr(attachment
));
2419 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2421 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2422 "glFramebufferRenderbufferEXT(non-existant"
2423 " renderbuffer %u)", renderbuffer
);
2426 else if (rb
== &DummyRenderbuffer
) {
2427 /* This is what NVIDIA does */
2428 _mesa_error(ctx
, GL_INVALID_VALUE
,
2429 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2435 /* remove renderbuffer attachment */
2439 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2440 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2441 /* make sure the renderbuffer is a depth/stencil format */
2442 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2443 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2444 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2445 "glFramebufferRenderbufferEXT(renderbuffer"
2446 " is not DEPTH_STENCIL format)");
2452 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2454 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2455 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2457 /* Some subsequent GL commands may depend on the framebuffer's visual
2458 * after the binding is updated. Update visual info now.
2460 _mesa_update_framebuffer_visual(ctx
, fb
);
2465 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2466 GLenum pname
, GLint
*params
)
2468 const struct gl_renderbuffer_attachment
*att
;
2469 struct gl_framebuffer
*buffer
;
2471 GET_CURRENT_CONTEXT(ctx
);
2473 /* The error differs in GL and GLES. */
2474 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2476 buffer
= get_framebuffer_target(ctx
, target
);
2478 _mesa_error(ctx
, GL_INVALID_ENUM
,
2479 "glGetFramebufferAttachmentParameterivEXT(target)");
2483 if (_mesa_is_winsys_fbo(buffer
)) {
2484 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2487 * "If the framebuffer currently bound to target is zero, then
2488 * INVALID_OPERATION is generated."
2490 * The EXT_framebuffer_object spec has the same wording, and the
2491 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2494 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2495 && !_mesa_is_gles3(ctx
)) {
2496 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2497 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2501 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2502 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2503 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2504 "glGetFramebufferAttachmentParameteriv(attachment)");
2507 /* the default / window-system FBO */
2508 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2511 /* user-created framebuffer FBO */
2512 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2516 _mesa_error(ctx
, GL_INVALID_ENUM
,
2517 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2521 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2522 /* the depth and stencil attachments must point to the same buffer */
2523 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2524 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2525 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2526 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2527 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2528 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2529 " attachments differ)");
2534 /* No need to flush here */
2537 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2538 *params
= _mesa_is_winsys_fbo(buffer
)
2539 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2541 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2542 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2543 *params
= att
->Renderbuffer
->Name
;
2545 else if (att
->Type
== GL_TEXTURE
) {
2546 *params
= att
->Texture
->Name
;
2549 assert(att
->Type
== GL_NONE
);
2550 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2553 goto invalid_pname_enum
;
2557 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2558 if (att
->Type
== GL_TEXTURE
) {
2559 *params
= att
->TextureLevel
;
2561 else if (att
->Type
== GL_NONE
) {
2562 _mesa_error(ctx
, err
,
2563 "glGetFramebufferAttachmentParameterivEXT(pname)");
2566 goto invalid_pname_enum
;
2569 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2570 if (att
->Type
== GL_TEXTURE
) {
2571 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2572 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2578 else if (att
->Type
== GL_NONE
) {
2579 _mesa_error(ctx
, err
,
2580 "glGetFramebufferAttachmentParameterivEXT(pname)");
2583 goto invalid_pname_enum
;
2586 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2587 if (ctx
->API
== API_OPENGLES
) {
2588 goto invalid_pname_enum
;
2589 } else if (att
->Type
== GL_NONE
) {
2590 _mesa_error(ctx
, err
,
2591 "glGetFramebufferAttachmentParameterivEXT(pname)");
2592 } else if (att
->Type
== GL_TEXTURE
) {
2593 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2594 *params
= att
->Zoffset
;
2601 goto invalid_pname_enum
;
2604 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2605 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2606 && !_mesa_is_gles3(ctx
)) {
2607 goto invalid_pname_enum
;
2609 else if (att
->Type
== GL_NONE
) {
2610 _mesa_error(ctx
, err
,
2611 "glGetFramebufferAttachmentParameterivEXT(pname)");
2614 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2615 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2618 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2619 * if the sRGB conversion is unsupported. */
2620 *params
= GL_LINEAR
;
2624 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2625 if ((ctx
->API
!= API_OPENGL_COMPAT
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2626 && ctx
->API
!= API_OPENGL_CORE
2627 && !_mesa_is_gles3(ctx
)) {
2628 goto invalid_pname_enum
;
2630 else if (att
->Type
== GL_NONE
) {
2631 _mesa_error(ctx
, err
,
2632 "glGetFramebufferAttachmentParameterivEXT(pname)");
2635 gl_format format
= att
->Renderbuffer
->Format
;
2637 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2640 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2641 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2642 * generate an INVALID_OPERATION error.
2644 if (_mesa_is_gles3(ctx
) && attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2645 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2646 "glGetFramebufferAttachmentParameteriv(cannot query "
2647 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2648 "GL_DEPTH_STENCIL_ATTACHMENT");
2652 if (format
== MESA_FORMAT_S8
) {
2656 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2657 /* depends on the attachment parameter */
2658 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2666 *params
= _mesa_get_format_datatype(format
);
2670 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2671 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2672 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2673 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2674 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2675 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2676 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2677 && !_mesa_is_gles3(ctx
)) {
2678 goto invalid_pname_enum
;
2680 else if (att
->Type
== GL_NONE
) {
2681 _mesa_error(ctx
, err
,
2682 "glGetFramebufferAttachmentParameterivEXT(pname)");
2684 else if (att
->Texture
) {
2685 const struct gl_texture_image
*texImage
=
2686 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2689 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2690 texImage
->TexFormat
);
2696 else if (att
->Renderbuffer
) {
2697 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2698 att
->Renderbuffer
->Format
);
2701 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2702 " invalid FBO attachment structure");
2706 goto invalid_pname_enum
;
2712 _mesa_error(ctx
, GL_INVALID_ENUM
,
2713 "glGetFramebufferAttachmentParameteriv(pname)");
2719 _mesa_GenerateMipmap(GLenum target
)
2721 struct gl_texture_image
*srcImage
;
2722 struct gl_texture_object
*texObj
;
2725 GET_CURRENT_CONTEXT(ctx
);
2727 FLUSH_VERTICES(ctx
, 0);
2731 error
= _mesa_is_gles(ctx
);
2737 error
= ctx
->API
== API_OPENGLES
;
2739 case GL_TEXTURE_CUBE_MAP
:
2740 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2742 case GL_TEXTURE_1D_ARRAY
:
2743 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2745 case GL_TEXTURE_2D_ARRAY
:
2746 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2747 || !ctx
->Extensions
.EXT_texture_array
;
2754 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2755 _mesa_lookup_enum_by_nr(target
));
2759 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2761 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2766 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2767 !_mesa_cube_complete(texObj
)) {
2768 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2769 "glGenerateMipmap(incomplete cube map)");
2773 _mesa_lock_texture(ctx
, texObj
);
2775 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2777 _mesa_unlock_texture(ctx
, texObj
);
2778 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2779 "glGenerateMipmap(zero size base image)");
2783 if (_mesa_is_enum_format_integer(srcImage
->InternalFormat
) ||
2784 _mesa_is_depthstencil_format(srcImage
->InternalFormat
) ||
2785 _mesa_is_stencil_format(srcImage
->InternalFormat
)) {
2786 _mesa_unlock_texture(ctx
, texObj
);
2787 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2788 "glGenerateMipmap(invalid internal format)");
2792 if (target
== GL_TEXTURE_CUBE_MAP
) {
2794 for (face
= 0; face
< 6; face
++)
2795 ctx
->Driver
.GenerateMipmap(ctx
,
2796 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2800 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2802 _mesa_unlock_texture(ctx
, texObj
);
2806 static const struct gl_renderbuffer_attachment
*
2807 find_attachment(const struct gl_framebuffer
*fb
,
2808 const struct gl_renderbuffer
*rb
)
2811 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2812 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2813 return &fb
->Attachment
[i
];
2820 * Helper function for checking if the datatypes of color buffers are
2821 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2823 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2824 * and any of the following conditions hold:
2825 * - The read buffer contains fixed-point or floating-point values and any
2826 * draw buffer contains neither fixed-point nor floating-point values.
2827 * - The read buffer contains unsigned integer values and any draw buffer
2828 * does not contain unsigned integer values.
2829 * - The read buffer contains signed integer values and any draw buffer
2830 * does not contain signed integer values."
2833 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2835 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2836 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2838 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2839 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2840 srcType
== GL_SIGNED_NORMALIZED
||
2841 srcType
== GL_FLOAT
);
2842 /* Boil any of those types down to GL_FLOAT */
2846 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2847 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2848 dstType
== GL_SIGNED_NORMALIZED
||
2849 dstType
== GL_FLOAT
);
2850 /* Boil any of those types down to GL_FLOAT */
2854 return srcType
== dstType
;
2859 compatible_resolve_formats(const struct gl_renderbuffer
*readRb
,
2860 const struct gl_renderbuffer
*drawRb
)
2862 GLenum readFormat
, drawFormat
;
2864 /* The simple case where we know the backing Mesa formats are the same.
2866 if (_mesa_get_srgb_format_linear(readRb
->Format
) ==
2867 _mesa_get_srgb_format_linear(drawRb
->Format
)) {
2871 /* The Mesa formats are different, so we must check whether the internal
2872 * formats are compatible.
2874 * Under some circumstances, the user may request e.g. two GL_RGBA8
2875 * textures and get two entirely different Mesa formats like RGBA8888 and
2876 * ARGB8888. Drivers behaving like that should be able to cope with
2877 * non-matching formats by themselves, because it's not the user's fault.
2879 * Blits between linear and sRGB formats are also allowed.
2881 readFormat
= _mesa_get_nongeneric_internalformat(readRb
->InternalFormat
);
2882 drawFormat
= _mesa_get_nongeneric_internalformat(drawRb
->InternalFormat
);
2883 readFormat
= _mesa_get_linear_internalformat(readFormat
);
2884 drawFormat
= _mesa_get_linear_internalformat(drawFormat
);
2886 if (readFormat
== drawFormat
) {
2895 * Blit rectangular region, optionally from one framebuffer to another.
2897 * Note, if the src buffer is multisampled and the dest is not, this is
2898 * when the samples must be resolved to a single color.
2901 _mesa_BlitFramebuffer(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2902 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2903 GLbitfield mask
, GLenum filter
)
2905 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2906 GL_DEPTH_BUFFER_BIT
|
2907 GL_STENCIL_BUFFER_BIT
);
2908 const struct gl_framebuffer
*readFb
, *drawFb
;
2909 GET_CURRENT_CONTEXT(ctx
);
2911 FLUSH_VERTICES(ctx
, 0);
2913 if (MESA_VERBOSE
& VERBOSE_API
)
2915 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2916 srcX0
, srcY0
, srcX1
, srcY1
,
2917 dstX0
, dstY0
, dstX1
, dstY1
,
2918 mask
, _mesa_lookup_enum_by_nr(filter
));
2920 if (ctx
->NewState
) {
2921 _mesa_update_state(ctx
);
2924 readFb
= ctx
->ReadBuffer
;
2925 drawFb
= ctx
->DrawBuffer
;
2927 if (!readFb
|| !drawFb
) {
2928 /* This will normally never happen but someday we may want to
2929 * support MakeCurrent() with no drawables.
2934 /* check for complete framebuffers */
2935 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2936 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2937 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2938 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2942 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2943 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2947 if (mask
& ~legalMaskBits
) {
2948 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2952 /* depth/stencil must be blitted with nearest filtering */
2953 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2954 && filter
!= GL_NEAREST
) {
2955 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2956 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2960 /* get color read/draw renderbuffers */
2961 if (mask
& GL_COLOR_BUFFER_BIT
) {
2962 const GLuint numColorDrawBuffers
= ctx
->DrawBuffer
->_NumColorDrawBuffers
;
2963 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
2964 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
2967 /* From the EXT_framebuffer_object spec:
2969 * "If a buffer is specified in <mask> and does not exist in both
2970 * the read and draw framebuffers, the corresponding bit is silently
2973 if (!colorReadRb
|| numColorDrawBuffers
== 0) {
2974 mask
&= ~GL_COLOR_BUFFER_BIT
;
2977 for (i
= 0; i
< numColorDrawBuffers
; i
++) {
2978 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
2982 /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
2983 * ES 3.0.1 spec says:
2985 * "If the source and destination buffers are identical, an
2986 * INVALID_OPERATION error is generated. Different mipmap
2987 * levels of a texture, different layers of a three-
2988 * dimensional texture or two-dimensional array texture, and
2989 * different faces of a cube map texture do not constitute
2990 * identical buffers."
2992 if (_mesa_is_gles3(ctx
) && (colorDrawRb
== colorReadRb
)) {
2993 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2994 "glBlitFramebuffer(source and destination color "
2995 "buffer cannot be the same)");
2999 if (!compatible_color_datatypes(colorReadRb
->Format
,
3000 colorDrawRb
->Format
)) {
3001 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3002 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
3005 /* extra checks for multisample copies... */
3006 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3007 /* color formats must match */
3008 if (!compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
3009 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3010 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
3015 if (filter
== GL_LINEAR
) {
3016 /* 3.1 spec, page 199:
3017 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3018 * if filter is LINEAR and read buffer contains integer data."
3020 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3021 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3022 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3023 "glBlitFramebufferEXT(integer color type)");
3030 if (mask
& GL_STENCIL_BUFFER_BIT
) {
3031 struct gl_renderbuffer
*readRb
=
3032 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3033 struct gl_renderbuffer
*drawRb
=
3034 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3036 /* From the EXT_framebuffer_object spec:
3038 * "If a buffer is specified in <mask> and does not exist in both
3039 * the read and draw framebuffers, the corresponding bit is silently
3042 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3043 mask
&= ~GL_STENCIL_BUFFER_BIT
;
3046 int read_z_bits
, draw_z_bits
;
3048 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3049 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3050 "glBlitFramebuffer(source and destination stencil "
3051 "buffer cannot be the same)");
3055 if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
3056 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
3057 /* There is no need to check the stencil datatype here, because
3058 * there is only one: GL_UNSIGNED_INT.
3060 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3061 "glBlitFramebuffer(stencil attachment format mismatch)");
3065 read_z_bits
= _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
);
3066 draw_z_bits
= _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
);
3068 /* If both buffers also have depth data, the depth formats must match
3069 * as well. If one doesn't have depth, it's not blitted, so we should
3070 * ignore the depth format check.
3072 if (read_z_bits
> 0 && draw_z_bits
> 0 &&
3073 (read_z_bits
!= draw_z_bits
||
3074 _mesa_get_format_datatype(readRb
->Format
) !=
3075 _mesa_get_format_datatype(drawRb
->Format
))) {
3077 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3078 "(stencil attachment depth format mismatch)");
3084 if (mask
& GL_DEPTH_BUFFER_BIT
) {
3085 struct gl_renderbuffer
*readRb
=
3086 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3087 struct gl_renderbuffer
*drawRb
=
3088 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3090 /* From the EXT_framebuffer_object spec:
3092 * "If a buffer is specified in <mask> and does not exist in both
3093 * the read and draw framebuffers, the corresponding bit is silently
3096 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3097 mask
&= ~GL_DEPTH_BUFFER_BIT
;
3100 int read_s_bit
, draw_s_bit
;
3102 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3103 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3104 "glBlitFramebuffer(source and destination depth "
3105 "buffer cannot be the same)");
3109 if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
3110 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
3111 (_mesa_get_format_datatype(readRb
->Format
) !=
3112 _mesa_get_format_datatype(drawRb
->Format
))) {
3113 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3114 "glBlitFramebuffer(depth attachment format mismatch)");
3118 read_s_bit
= _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
);
3119 draw_s_bit
= _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
);
3121 /* If both buffers also have stencil data, the stencil formats must
3122 * match as well. If one doesn't have stencil, it's not blitted, so
3123 * we should ignore the stencil format check.
3125 if (read_s_bit
> 0 && draw_s_bit
> 0 && read_s_bit
!= draw_s_bit
) {
3126 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3127 "(depth attachment stencil bits mismatch)");
3134 if (_mesa_is_gles3(ctx
)) {
3135 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3138 * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
3139 * an INVALID_OPERATION error is generated."
3141 if (drawFb
->Visual
.samples
> 0) {
3142 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3143 "glBlitFramebuffer(destination samples must be 0)");
3147 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3150 * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
3151 * no copy is performed and an INVALID_OPERATION error is generated
3152 * if the formats of the read and draw framebuffers are not
3153 * identical or if the source and destination rectangles are not
3154 * defined with the same (X0, Y0) and (X1, Y1) bounds."
3156 * The format check was made above because desktop OpenGL has the same
3159 if (readFb
->Visual
.samples
> 0
3160 && (srcX0
!= dstX0
|| srcY0
!= dstY0
3161 || srcX1
!= dstX1
|| srcY1
!= dstY1
)) {
3162 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3163 "glBlitFramebuffer(bad src/dst multisample region)");
3167 if (readFb
->Visual
.samples
> 0 &&
3168 drawFb
->Visual
.samples
> 0 &&
3169 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
3170 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3171 "glBlitFramebufferEXT(mismatched samples)");
3175 /* extra checks for multisample copies... */
3176 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3177 /* src and dest region sizes must be the same */
3178 if (abs(srcX1
- srcX0
) != abs(dstX1
- dstX0
) ||
3179 abs(srcY1
- srcY0
) != abs(dstY1
- dstY0
)) {
3180 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3181 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
3187 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3188 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3194 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3195 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3198 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3200 srcX0
, srcY0
, srcX1
, srcY1
,
3201 dstX0
, dstY0
, dstX1
, dstY1
,
3204 const struct gl_renderbuffer_attachment
*att
;
3206 att
= find_attachment(readFb
, colorReadRb
);
3207 printf(" Src FBO %u RB %u (%dx%d) ",
3208 readFb
->Name
, colorReadRb
->Name
,
3209 colorReadRb
->Width
, colorReadRb
->Height
);
3210 if (att
&& att
->Texture
) {
3211 printf("Tex %u tgt 0x%x level %u face %u",
3213 att
->Texture
->Target
,
3219 /* Print all active color render buffers */
3220 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
3221 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3225 att
= find_attachment(drawFb
, colorDrawRb
);
3226 printf(" Dst FBO %u RB %u (%dx%d) ",
3227 drawFb
->Name
, colorDrawRb
->Name
,
3228 colorDrawRb
->Width
, colorDrawRb
->Height
);
3229 if (att
&& att
->Texture
) {
3230 printf("Tex %u tgt 0x%x level %u face %u",
3232 att
->Texture
->Target
,
3242 (srcX1
- srcX0
) == 0 || (srcY1
- srcY0
) == 0 ||
3243 (dstX1
- dstX0
) == 0 || (dstY1
- dstY0
) == 0) {
3247 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3248 ctx
->Driver
.BlitFramebuffer(ctx
,
3249 srcX0
, srcY0
, srcX1
, srcY1
,
3250 dstX0
, dstY0
, dstX1
, dstY1
,
3256 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3257 const GLenum
*attachments
, GLint x
, GLint y
,
3258 GLsizei width
, GLsizei height
, const char *name
)
3261 struct gl_framebuffer
*fb
;
3262 GET_CURRENT_CONTEXT(ctx
);
3264 fb
= get_framebuffer_target(ctx
, target
);
3266 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3270 if (numAttachments
< 0) {
3271 _mesa_error(ctx
, GL_INVALID_VALUE
,
3272 "%s(numAttachments < 0)", name
);
3276 /* The GL_ARB_invalidate_subdata spec says:
3278 * "If an attachment is specified that does not exist in the
3279 * framebuffer bound to <target>, it is ignored."
3283 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3284 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3285 * INVALID_OPERATION is generated."
3287 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3288 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3289 * set of retrictions).
3291 for (i
= 0; i
< numAttachments
; i
++) {
3292 if (_mesa_is_winsys_fbo(fb
)) {
3293 switch (attachments
[i
]) {
3299 /* Accumulation buffers and auxilary buffers were removed in
3300 * OpenGL 3.1, and they never existed in OpenGL ES.
3302 if (ctx
->API
!= API_OPENGL_COMPAT
)
3312 case GL_FRONT_RIGHT
:
3313 if (!_mesa_is_desktop_gl(ctx
))
3320 switch (attachments
[i
]) {
3321 case GL_DEPTH_ATTACHMENT
:
3322 case GL_STENCIL_ATTACHMENT
:
3324 case GL_COLOR_ATTACHMENT0
:
3325 case GL_COLOR_ATTACHMENT1
:
3326 case GL_COLOR_ATTACHMENT2
:
3327 case GL_COLOR_ATTACHMENT3
:
3328 case GL_COLOR_ATTACHMENT4
:
3329 case GL_COLOR_ATTACHMENT5
:
3330 case GL_COLOR_ATTACHMENT6
:
3331 case GL_COLOR_ATTACHMENT7
:
3332 case GL_COLOR_ATTACHMENT8
:
3333 case GL_COLOR_ATTACHMENT9
:
3334 case GL_COLOR_ATTACHMENT10
:
3335 case GL_COLOR_ATTACHMENT11
:
3336 case GL_COLOR_ATTACHMENT12
:
3337 case GL_COLOR_ATTACHMENT13
:
3338 case GL_COLOR_ATTACHMENT14
:
3339 case GL_COLOR_ATTACHMENT15
: {
3340 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3341 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3342 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3343 "%s(attachment >= max. color attachments)", name
);
3353 /* We don't actually do anything for this yet. Just return after
3354 * validating the parameters and generating the required errors.
3359 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3364 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3365 const GLenum
*attachments
, GLint x
, GLint y
,
3366 GLsizei width
, GLsizei height
)
3368 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3369 x
, y
, width
, height
,
3370 "glInvalidateSubFramebuffer");
3374 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3375 const GLenum
*attachments
)
3377 /* The GL_ARB_invalidate_subdata spec says:
3381 * void InvalidateFramebuffer(enum target,
3382 * sizei numAttachments,
3383 * const enum *attachments);
3385 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3386 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3387 * <MAX_VIEWPORT_DIMS[1]> respectively."
3389 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3390 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3391 "glInvalidateFramebuffer");
3395 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3396 const GLenum
*attachments
)
3398 struct gl_framebuffer
*fb
;
3401 GET_CURRENT_CONTEXT(ctx
);
3403 fb
= get_framebuffer_target(ctx
, target
);
3405 _mesa_error(ctx
, GL_INVALID_ENUM
,
3406 "glDiscardFramebufferEXT(target %s)",
3407 _mesa_lookup_enum_by_nr(target
));
3411 if (numAttachments
< 0) {
3412 _mesa_error(ctx
, GL_INVALID_VALUE
,
3413 "glDiscardFramebufferEXT(numAttachments < 0)");
3417 for (i
= 0; i
< numAttachments
; i
++) {
3418 switch (attachments
[i
]) {
3422 if (_mesa_is_user_fbo(fb
))
3425 case GL_COLOR_ATTACHMENT0
:
3426 case GL_DEPTH_ATTACHMENT
:
3427 case GL_STENCIL_ATTACHMENT
:
3428 if (_mesa_is_winsys_fbo(fb
))
3436 if (ctx
->Driver
.DiscardFramebuffer
)
3437 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3442 _mesa_error(ctx
, GL_INVALID_ENUM
,
3443 "glDiscardFramebufferEXT(attachment %s)",
3444 _mesa_lookup_enum_by_nr(attachments
[i
]));