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 "mfeatures.h"
46 #include "multisample.h"
48 #include "renderbuffer.h"
54 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
61 * None of the GL_EXT_framebuffer_object functions are compiled into
68 * When glGenRender/FramebuffersEXT() is called we insert pointers to
69 * these placeholder objects into the hash table.
70 * Later, when the object ID is first bound, we replace the placeholder
71 * with the real frame/renderbuffer.
73 static struct gl_framebuffer DummyFramebuffer
;
74 static struct gl_renderbuffer DummyRenderbuffer
;
76 /* We bind this framebuffer when applications pass a NULL
77 * drawable/surface in make current. */
78 static struct gl_framebuffer IncompleteFramebuffer
;
82 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
88 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
95 _mesa_init_fbobjects(struct gl_context
*ctx
)
97 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
98 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
99 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
100 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
101 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
102 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
105 struct gl_framebuffer
*
106 _mesa_get_incomplete_framebuffer(void)
108 return &IncompleteFramebuffer
;
112 * Helper routine for getting a gl_renderbuffer.
114 struct gl_renderbuffer
*
115 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
117 struct gl_renderbuffer
*rb
;
122 rb
= (struct gl_renderbuffer
*)
123 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
129 * Helper routine for getting a gl_framebuffer.
131 struct gl_framebuffer
*
132 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
134 struct gl_framebuffer
*fb
;
139 fb
= (struct gl_framebuffer
*)
140 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
146 * Mark the given framebuffer as invalid. This will force the
147 * test for framebuffer completeness to be done before the framebuffer
151 invalidate_framebuffer(struct gl_framebuffer
*fb
)
153 fb
->_Status
= 0; /* "indeterminate" */
158 * Return the gl_framebuffer object which corresponds to the given
159 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
160 * Check support for GL_EXT_framebuffer_blit to determine if certain
162 * \return gl_framebuffer pointer or NULL if target is illegal
164 static struct gl_framebuffer
*
165 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
167 bool have_fb_blit
= _mesa_is_gles3(ctx
) ||
168 (ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
));
170 case GL_DRAW_FRAMEBUFFER
:
171 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
172 case GL_READ_FRAMEBUFFER
:
173 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
174 case GL_FRAMEBUFFER_EXT
:
175 return ctx
->DrawBuffer
;
183 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
184 * gl_renderbuffer_attachment object.
185 * This function is only used for user-created FB objects, not the
186 * default / window-system FB object.
187 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
188 * the depth buffer attachment point.
190 struct gl_renderbuffer_attachment
*
191 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
196 assert(_mesa_is_user_fbo(fb
));
198 switch (attachment
) {
199 case GL_COLOR_ATTACHMENT0_EXT
:
200 case GL_COLOR_ATTACHMENT1_EXT
:
201 case GL_COLOR_ATTACHMENT2_EXT
:
202 case GL_COLOR_ATTACHMENT3_EXT
:
203 case GL_COLOR_ATTACHMENT4_EXT
:
204 case GL_COLOR_ATTACHMENT5_EXT
:
205 case GL_COLOR_ATTACHMENT6_EXT
:
206 case GL_COLOR_ATTACHMENT7_EXT
:
207 case GL_COLOR_ATTACHMENT8_EXT
:
208 case GL_COLOR_ATTACHMENT9_EXT
:
209 case GL_COLOR_ATTACHMENT10_EXT
:
210 case GL_COLOR_ATTACHMENT11_EXT
:
211 case GL_COLOR_ATTACHMENT12_EXT
:
212 case GL_COLOR_ATTACHMENT13_EXT
:
213 case GL_COLOR_ATTACHMENT14_EXT
:
214 case GL_COLOR_ATTACHMENT15_EXT
:
215 /* Only OpenGL ES 1.x forbids color attachments other than
216 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
219 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
220 if (i
>= ctx
->Const
.MaxColorAttachments
221 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
224 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
225 case GL_DEPTH_STENCIL_ATTACHMENT
:
226 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
229 case GL_DEPTH_ATTACHMENT_EXT
:
230 return &fb
->Attachment
[BUFFER_DEPTH
];
231 case GL_STENCIL_ATTACHMENT_EXT
:
232 return &fb
->Attachment
[BUFFER_STENCIL
];
240 * As above, but only used for getting attachments of the default /
241 * window-system framebuffer (not user-created framebuffer objects).
243 static struct gl_renderbuffer_attachment
*
244 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
247 assert(_mesa_is_winsys_fbo(fb
));
249 if (_mesa_is_gles3(ctx
)) {
250 assert(attachment
== GL_BACK
||
251 attachment
== GL_DEPTH
||
252 attachment
== GL_STENCIL
);
253 switch (attachment
) {
255 /* Since there is no stereo rendering in ES 3.0, only return the
258 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
259 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
260 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
262 return &fb
->Attachment
[BUFFER_DEPTH
];
264 return &fb
->Attachment
[BUFFER_STENCIL
];
268 switch (attachment
) {
270 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
272 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
274 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
276 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
278 if (fb
->Visual
.numAuxBuffers
== 1) {
279 return &fb
->Attachment
[BUFFER_AUX0
];
283 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
285 * "If the default framebuffer is bound to target, then attachment must
286 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
287 * identifying a color buffer; DEPTH, identifying the depth buffer; or
288 * STENCIL, identifying the stencil buffer."
290 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
291 * language. However, revision #33 of the ARB_framebuffer_object spec
294 * "If the default framebuffer is bound to <target>, then <attachment>
295 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
296 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
297 * depth buffer, or the stencil buffer, and <pname> may be
298 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
299 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
301 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
302 * from glext.h, so shipping apps should not use those values.
304 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
305 * support queries of the window system FBO.
308 return &fb
->Attachment
[BUFFER_DEPTH
];
310 return &fb
->Attachment
[BUFFER_STENCIL
];
319 * Remove any texture or renderbuffer attached to the given attachment
320 * point. Update reference counts, etc.
323 _mesa_remove_attachment(struct gl_context
*ctx
,
324 struct gl_renderbuffer_attachment
*att
)
326 if (att
->Type
== GL_TEXTURE
) {
327 ASSERT(att
->Texture
);
328 if (ctx
->Driver
.FinishRenderTexture
) {
329 /* tell driver that we're done rendering to this texture. */
330 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
332 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
333 ASSERT(!att
->Texture
);
335 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
336 ASSERT(!att
->Texture
);
337 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
338 ASSERT(!att
->Renderbuffer
);
341 att
->Complete
= GL_TRUE
;
346 * Bind a texture object to an attachment point.
347 * The previous binding, if any, will be removed first.
350 _mesa_set_texture_attachment(struct gl_context
*ctx
,
351 struct gl_framebuffer
*fb
,
352 struct gl_renderbuffer_attachment
*att
,
353 struct gl_texture_object
*texObj
,
354 GLenum texTarget
, GLuint level
, GLuint zoffset
)
356 if (att
->Texture
== texObj
) {
357 /* re-attaching same texture */
358 ASSERT(att
->Type
== GL_TEXTURE
);
359 if (ctx
->Driver
.FinishRenderTexture
)
360 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
364 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
365 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
366 _mesa_remove_attachment(ctx
, att
);
367 att
->Type
= GL_TEXTURE
;
368 assert(!att
->Texture
);
369 _mesa_reference_texobj(&att
->Texture
, texObj
);
372 /* always update these fields */
373 att
->TextureLevel
= level
;
374 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
375 att
->Zoffset
= zoffset
;
376 att
->Complete
= GL_FALSE
;
378 if (_mesa_get_attachment_teximage(att
)) {
379 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
382 invalidate_framebuffer(fb
);
387 * Bind a renderbuffer to an attachment point.
388 * The previous binding, if any, will be removed first.
391 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
392 struct gl_renderbuffer_attachment
*att
,
393 struct gl_renderbuffer
*rb
)
395 /* XXX check if re-doing same attachment, exit early */
396 _mesa_remove_attachment(ctx
, att
);
397 att
->Type
= GL_RENDERBUFFER_EXT
;
398 att
->Texture
= NULL
; /* just to be safe */
399 att
->Complete
= GL_FALSE
;
400 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
405 * Fallback for ctx->Driver.FramebufferRenderbuffer()
406 * Attach a renderbuffer object to a framebuffer object.
409 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
410 struct gl_framebuffer
*fb
,
411 GLenum attachment
, struct gl_renderbuffer
*rb
)
413 struct gl_renderbuffer_attachment
*att
;
415 _glthread_LOCK_MUTEX(fb
->Mutex
);
417 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
420 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
421 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
422 /* do stencil attachment here (depth already done above) */
423 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
425 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
427 rb
->AttachedAnytime
= GL_TRUE
;
430 _mesa_remove_attachment(ctx
, att
);
433 invalidate_framebuffer(fb
);
435 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
440 * Fallback for ctx->Driver.ValidateFramebuffer()
441 * Check if the renderbuffer's formats are supported by the software
443 * Drivers should probably override this.
446 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
449 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
450 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
452 switch (rb
->_BaseFormat
) {
454 case GL_LUMINANCE_ALPHA
:
459 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
463 switch (rb
->Format
) {
464 /* XXX This list is likely incomplete. */
465 case MESA_FORMAT_RGB9_E5_FLOAT
:
466 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
469 /* render buffer format is supported by software rendering */
478 * Return true if the framebuffer has a combined depth/stencil
479 * renderbuffer attached.
482 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
484 const struct gl_renderbuffer_attachment
*depth
=
485 &fb
->Attachment
[BUFFER_DEPTH
];
486 const struct gl_renderbuffer_attachment
*stencil
=
487 &fb
->Attachment
[BUFFER_STENCIL
];
489 if (depth
->Type
== stencil
->Type
) {
490 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
491 depth
->Renderbuffer
== stencil
->Renderbuffer
)
494 if (depth
->Type
== GL_TEXTURE
&&
495 depth
->Texture
== stencil
->Texture
)
507 att_incomplete(const char *msg
)
509 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
510 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
519 fbo_incomplete(const char *msg
, int index
)
521 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
522 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
528 * Is the given base format a legal format for a color renderbuffer?
531 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
533 switch (baseFormat
) {
538 case GL_LUMINANCE_ALPHA
:
541 return ctx
->API
== API_OPENGL_COMPAT
&&
542 ctx
->Extensions
.ARB_framebuffer_object
;
545 return ctx
->Extensions
.ARB_texture_rg
;
553 * Is the given base format a legal format for a color renderbuffer?
556 is_format_color_renderable(const struct gl_context
*ctx
, gl_format format
, GLenum internalFormat
)
558 const GLenum baseFormat
=
559 _mesa_get_format_base_format(format
);
562 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
563 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
567 /* Reject additional cases for GLES */
568 switch (internalFormat
) {
588 if (format
== MESA_FORMAT_ARGB2101010
&& internalFormat
!= GL_RGB10_A2
) {
597 * Is the given base format a legal format for a depth/stencil renderbuffer?
600 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
602 switch (baseFormat
) {
603 case GL_DEPTH_COMPONENT
:
604 case GL_DEPTH_STENCIL_EXT
:
613 * Test if an attachment point is complete and update its Complete field.
614 * \param format if GL_COLOR, this is a color attachment point,
615 * if GL_DEPTH, this is a depth component attachment point,
616 * if GL_STENCIL, this is a stencil component attachment point.
619 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
620 struct gl_renderbuffer_attachment
*att
)
622 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
624 /* assume complete */
625 att
->Complete
= GL_TRUE
;
627 /* Look for reasons why the attachment might be incomplete */
628 if (att
->Type
== GL_TEXTURE
) {
629 const struct gl_texture_object
*texObj
= att
->Texture
;
630 struct gl_texture_image
*texImage
;
634 att_incomplete("no texobj");
635 att
->Complete
= GL_FALSE
;
639 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
641 att_incomplete("no teximage");
642 att
->Complete
= GL_FALSE
;
645 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
646 att_incomplete("teximage width/height=0");
647 printf("texobj = %u\n", texObj
->Name
);
648 printf("level = %d\n", att
->TextureLevel
);
649 att
->Complete
= GL_FALSE
;
652 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
653 att_incomplete("bad z offset");
654 att
->Complete
= GL_FALSE
;
658 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
660 if (format
== GL_COLOR
) {
661 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
662 att_incomplete("bad format");
663 att
->Complete
= GL_FALSE
;
666 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
667 att_incomplete("compressed internalformat");
668 att
->Complete
= GL_FALSE
;
672 else if (format
== GL_DEPTH
) {
673 if (baseFormat
== GL_DEPTH_COMPONENT
) {
676 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
677 ctx
->Extensions
.ARB_depth_texture
&&
678 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
682 att
->Complete
= GL_FALSE
;
683 att_incomplete("bad depth format");
688 ASSERT(format
== GL_STENCIL
);
689 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
690 ctx
->Extensions
.ARB_depth_texture
&&
691 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
695 /* no such thing as stencil-only textures */
696 att_incomplete("illegal stencil texture");
697 att
->Complete
= GL_FALSE
;
702 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
703 const GLenum baseFormat
=
704 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
706 ASSERT(att
->Renderbuffer
);
707 if (!att
->Renderbuffer
->InternalFormat
||
708 att
->Renderbuffer
->Width
< 1 ||
709 att
->Renderbuffer
->Height
< 1) {
710 att_incomplete("0x0 renderbuffer");
711 att
->Complete
= GL_FALSE
;
714 if (format
== GL_COLOR
) {
715 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
716 att_incomplete("bad renderbuffer color format");
717 att
->Complete
= GL_FALSE
;
721 else if (format
== GL_DEPTH
) {
722 if (baseFormat
== GL_DEPTH_COMPONENT
) {
725 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
726 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
730 att_incomplete("bad renderbuffer depth format");
731 att
->Complete
= GL_FALSE
;
736 assert(format
== GL_STENCIL
);
737 if (baseFormat
== GL_STENCIL_INDEX
) {
740 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
741 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
745 att
->Complete
= GL_FALSE
;
746 att_incomplete("bad renderbuffer stencil format");
752 ASSERT(att
->Type
== GL_NONE
);
760 * Test if the given framebuffer object is complete and update its
761 * Status field with the results.
762 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
763 * driver to make hardware-specific validation/completeness checks.
764 * Also update the framebuffer's Width and Height fields if the
765 * framebuffer is complete.
768 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
769 struct gl_framebuffer
*fb
)
772 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
773 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
774 GLint numSamples
= -1;
775 GLint fixedSampleLocations
= -1;
779 assert(_mesa_is_user_fbo(fb
));
781 /* we're changing framebuffer fields here */
782 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
787 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
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. */
906 GLenum type
= _mesa_get_format_datatype(attFormat
);
908 fb
->_AllColorBuffersFixedPoint
=
909 fb
->_AllColorBuffersFixedPoint
&&
910 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
913 /* Error-check width, height, format */
914 if (numImages
== 1) {
921 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
922 /* check that width, height, format are same */
923 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
924 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
925 fbo_incomplete("width or height mismatch", -1);
928 /* check that all color buffers are the same format */
929 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
930 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
931 fbo_incomplete("format mismatch", -1);
937 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
939 if (att
->Type
== GL_RENDERBUFFER
&&
940 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
941 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
942 fbo_incomplete("unsupported renderbuffer format", i
);
947 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
948 /* Check that all DrawBuffers are present */
949 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
950 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
951 const struct gl_renderbuffer_attachment
*att
952 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
954 if (att
->Type
== GL_NONE
) {
955 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
956 fbo_incomplete("missing drawbuffer", j
);
962 /* Check that the ReadBuffer is present */
963 if (fb
->ColorReadBuffer
!= GL_NONE
) {
964 const struct gl_renderbuffer_attachment
*att
965 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
967 if (att
->Type
== GL_NONE
) {
968 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
969 fbo_incomplete("missing readbuffer", -1);
975 if (numImages
== 0) {
976 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
977 fbo_incomplete("no attachments", -1);
981 /* Provisionally set status = COMPLETE ... */
982 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
984 /* ... but the driver may say the FB is incomplete.
985 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
988 if (ctx
->Driver
.ValidateFramebuffer
) {
989 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
990 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
991 fbo_incomplete("driver marked FBO as incomplete", -1);
995 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
997 * Note that if ARB_framebuffer_object is supported and the attached
998 * renderbuffers/textures are different sizes, the framebuffer
999 * width/height will be set to the smallest width/height.
1001 fb
->Width
= minWidth
;
1002 fb
->Height
= minHeight
;
1004 /* finally, update the visual info for the framebuffer */
1005 _mesa_update_framebuffer_visual(ctx
, fb
);
1010 GLboolean GLAPIENTRY
1011 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1013 GET_CURRENT_CONTEXT(ctx
);
1014 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1016 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1017 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1025 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1027 struct gl_renderbuffer
*newRb
;
1028 GET_CURRENT_CONTEXT(ctx
);
1030 if (target
!= GL_RENDERBUFFER_EXT
) {
1031 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1035 /* No need to flush here since the render buffer binding has no
1036 * effect on rendering state.
1040 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1041 if (newRb
== &DummyRenderbuffer
) {
1042 /* ID was reserved, but no real renderbuffer object made yet */
1046 && _mesa_is_desktop_gl(ctx
)
1047 && ctx
->Extensions
.ARB_framebuffer_object
) {
1048 /* All RB IDs must be Gen'd */
1049 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1054 /* create new renderbuffer object */
1055 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1057 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1060 ASSERT(newRb
->AllocStorage
);
1061 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1062 newRb
->RefCount
= 1; /* referenced by hash table */
1069 ASSERT(newRb
!= &DummyRenderbuffer
);
1071 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1076 * If the given renderbuffer is anywhere attached to the framebuffer, detach
1078 * This is used when a renderbuffer object is deleted.
1079 * The spec calls for unbinding.
1082 detach_renderbuffer(struct gl_context
*ctx
,
1083 struct gl_framebuffer
*fb
,
1084 struct gl_renderbuffer
*rb
)
1087 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1088 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
1089 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
1092 invalidate_framebuffer(fb
);
1097 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1100 GET_CURRENT_CONTEXT(ctx
);
1102 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1104 for (i
= 0; i
< n
; i
++) {
1105 if (renderbuffers
[i
] > 0) {
1106 struct gl_renderbuffer
*rb
;
1107 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1109 /* check if deleting currently bound renderbuffer object */
1110 if (rb
== ctx
->CurrentRenderbuffer
) {
1112 ASSERT(rb
->RefCount
>= 2);
1113 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1116 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1117 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1119 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1120 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1121 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1124 /* Remove from hash table immediately, to free the ID.
1125 * But the object will not be freed until it's no longer
1126 * referenced anywhere else.
1128 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1130 if (rb
!= &DummyRenderbuffer
) {
1131 /* no longer referenced by hash table */
1132 _mesa_reference_renderbuffer(&rb
, NULL
);
1141 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1143 GET_CURRENT_CONTEXT(ctx
);
1148 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1155 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1157 for (i
= 0; i
< n
; i
++) {
1158 GLuint name
= first
+ i
;
1159 renderbuffers
[i
] = name
;
1160 /* insert dummy placeholder into hash table */
1161 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1162 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1163 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1169 * Given an internal format token for a render buffer, return the
1170 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1171 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1172 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1174 * This is similar to _mesa_base_tex_format() but the set of valid
1175 * internal formats is different.
1177 * Note that even if a format is determined to be legal here, validation
1178 * of the FBO may fail if the format is not supported by the driver/GPU.
1180 * \param internalFormat as passed to glRenderbufferStorage()
1181 * \return the base internal format, or 0 if internalFormat is illegal
1184 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1187 * Notes: some formats such as alpha, luminance, etc. were added
1188 * with GL_ARB_framebuffer_object.
1190 switch (internalFormat
) {
1196 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1201 case GL_LUMINANCE12
:
1202 case GL_LUMINANCE16
:
1203 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1205 case GL_LUMINANCE_ALPHA
:
1206 case GL_LUMINANCE4_ALPHA4
:
1207 case GL_LUMINANCE6_ALPHA2
:
1208 case GL_LUMINANCE8_ALPHA8
:
1209 case GL_LUMINANCE12_ALPHA4
:
1210 case GL_LUMINANCE12_ALPHA12
:
1211 case GL_LUMINANCE16_ALPHA16
:
1212 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1213 ? GL_LUMINANCE_ALPHA
: 0;
1217 case GL_INTENSITY12
:
1218 case GL_INTENSITY16
:
1219 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1230 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1232 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1241 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1243 case GL_SRGB8_ALPHA8_EXT
:
1244 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1245 case GL_STENCIL_INDEX
:
1246 case GL_STENCIL_INDEX1_EXT
:
1247 case GL_STENCIL_INDEX4_EXT
:
1248 case GL_STENCIL_INDEX16_EXT
:
1249 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1250 * OpenGL ES, but Mesa does not currently support them.
1252 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1253 case GL_STENCIL_INDEX8_EXT
:
1254 return GL_STENCIL_INDEX
;
1255 case GL_DEPTH_COMPONENT
:
1256 case GL_DEPTH_COMPONENT32
:
1257 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1258 case GL_DEPTH_COMPONENT16
:
1259 case GL_DEPTH_COMPONENT24
:
1260 return GL_DEPTH_COMPONENT
;
1261 case GL_DEPTH_STENCIL_EXT
:
1262 return _mesa_is_desktop_gl(ctx
)
1263 && ctx
->Extensions
.EXT_packed_depth_stencil
1264 ? GL_DEPTH_STENCIL_EXT
: 0;
1265 case GL_DEPTH24_STENCIL8_EXT
:
1266 return ctx
->Extensions
.EXT_packed_depth_stencil
1267 ? GL_DEPTH_STENCIL_EXT
: 0;
1268 case GL_DEPTH_COMPONENT32F
:
1269 return ctx
->Version
>= 30
1270 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1271 ? GL_DEPTH_COMPONENT
: 0;
1272 case GL_DEPTH32F_STENCIL8
:
1273 return ctx
->Version
>= 30
1274 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1275 ? GL_DEPTH_STENCIL
: 0;
1278 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1281 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1285 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1288 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1290 /* signed normalized texture formats */
1294 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1299 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1303 case GL_RGB16_SNORM
:
1304 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1307 case GL_RGBA8_SNORM
:
1308 case GL_RGBA16_SNORM
:
1309 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1311 case GL_ALPHA_SNORM
:
1312 case GL_ALPHA8_SNORM
:
1313 case GL_ALPHA16_SNORM
:
1314 return ctx
->API
== API_OPENGL_COMPAT
&&
1315 ctx
->Extensions
.EXT_texture_snorm
&&
1316 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1319 return ((_mesa_is_desktop_gl(ctx
) &&
1320 ctx
->Extensions
.ARB_texture_rg
&&
1321 ctx
->Extensions
.ARB_texture_float
) ||
1322 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1326 return ((_mesa_is_desktop_gl(ctx
) &&
1327 ctx
->Extensions
.ARB_texture_rg
&&
1328 ctx
->Extensions
.ARB_texture_float
) ||
1329 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1333 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1337 return ((_mesa_is_desktop_gl(ctx
) &&
1338 ctx
->Extensions
.ARB_texture_float
) ||
1339 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1341 case GL_ALPHA16F_ARB
:
1342 case GL_ALPHA32F_ARB
:
1343 return ctx
->API
== API_OPENGL_COMPAT
&&
1344 ctx
->Extensions
.ARB_texture_float
&&
1345 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1346 case GL_LUMINANCE16F_ARB
:
1347 case GL_LUMINANCE32F_ARB
:
1348 return ctx
->API
== API_OPENGL_COMPAT
&&
1349 ctx
->Extensions
.ARB_texture_float
&&
1350 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1351 case GL_LUMINANCE_ALPHA16F_ARB
:
1352 case GL_LUMINANCE_ALPHA32F_ARB
:
1353 return ctx
->API
== API_OPENGL_COMPAT
&&
1354 ctx
->Extensions
.ARB_texture_float
&&
1355 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1356 case GL_INTENSITY16F_ARB
:
1357 case GL_INTENSITY32F_ARB
:
1358 return ctx
->API
== API_OPENGL_COMPAT
&&
1359 ctx
->Extensions
.ARB_texture_float
&&
1360 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1362 return (_mesa_is_desktop_gl(ctx
)
1363 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1365 case GL_R11F_G11F_B10F
:
1366 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1367 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1370 case GL_RGBA8UI_EXT
:
1371 case GL_RGBA16UI_EXT
:
1372 case GL_RGBA32UI_EXT
:
1374 case GL_RGBA16I_EXT
:
1375 case GL_RGBA32I_EXT
:
1376 return ctx
->Version
>= 30
1377 || (_mesa_is_desktop_gl(ctx
) &&
1378 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1381 case GL_RGB16UI_EXT
:
1382 case GL_RGB32UI_EXT
:
1386 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1394 return ctx
->Version
>= 30
1395 || (_mesa_is_desktop_gl(ctx
) &&
1396 ctx
->Extensions
.ARB_texture_rg
&&
1397 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1405 return ctx
->Version
>= 30
1406 || (_mesa_is_desktop_gl(ctx
) &&
1407 ctx
->Extensions
.ARB_texture_rg
&&
1408 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1410 case GL_INTENSITY8I_EXT
:
1411 case GL_INTENSITY8UI_EXT
:
1412 case GL_INTENSITY16I_EXT
:
1413 case GL_INTENSITY16UI_EXT
:
1414 case GL_INTENSITY32I_EXT
:
1415 case GL_INTENSITY32UI_EXT
:
1416 return ctx
->API
== API_OPENGL_COMPAT
&&
1417 ctx
->Extensions
.EXT_texture_integer
&&
1418 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1420 case GL_LUMINANCE8I_EXT
:
1421 case GL_LUMINANCE8UI_EXT
:
1422 case GL_LUMINANCE16I_EXT
:
1423 case GL_LUMINANCE16UI_EXT
:
1424 case GL_LUMINANCE32I_EXT
:
1425 case GL_LUMINANCE32UI_EXT
:
1426 return ctx
->API
== API_OPENGL_COMPAT
&&
1427 ctx
->Extensions
.EXT_texture_integer
&&
1428 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1430 case GL_LUMINANCE_ALPHA8I_EXT
:
1431 case GL_LUMINANCE_ALPHA8UI_EXT
:
1432 case GL_LUMINANCE_ALPHA16I_EXT
:
1433 case GL_LUMINANCE_ALPHA16UI_EXT
:
1434 case GL_LUMINANCE_ALPHA32I_EXT
:
1435 case GL_LUMINANCE_ALPHA32UI_EXT
:
1436 return ctx
->API
== API_OPENGL_COMPAT
&&
1437 ctx
->Extensions
.EXT_texture_integer
&&
1438 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1440 case GL_ALPHA8I_EXT
:
1441 case GL_ALPHA8UI_EXT
:
1442 case GL_ALPHA16I_EXT
:
1443 case GL_ALPHA16UI_EXT
:
1444 case GL_ALPHA32I_EXT
:
1445 case GL_ALPHA32UI_EXT
:
1446 return ctx
->API
== API_OPENGL_COMPAT
&&
1447 ctx
->Extensions
.EXT_texture_integer
&&
1448 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1451 return (_mesa_is_desktop_gl(ctx
) &&
1452 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1453 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1456 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1465 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1468 invalidate_rb(GLuint key
, void *data
, void *userData
)
1470 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1471 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1473 /* If this is a user-created FBO */
1474 if (_mesa_is_user_fbo(fb
)) {
1476 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1477 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1478 if (att
->Type
== GL_RENDERBUFFER
&&
1479 att
->Renderbuffer
== rb
) {
1480 /* Mark fb status as indeterminate to force re-validation */
1489 /** sentinal value, see below */
1490 #define NO_SAMPLES 1000
1494 * Helper function used by _mesa_RenderbufferStorage() and
1495 * _mesa_RenderbufferStorageMultisample().
1496 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1499 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1500 GLsizei width
, GLsizei height
, GLsizei samples
)
1502 const char *func
= samples
== NO_SAMPLES
?
1503 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1504 struct gl_renderbuffer
*rb
;
1506 GLenum sample_count_error
;
1507 GET_CURRENT_CONTEXT(ctx
);
1509 if (MESA_VERBOSE
& VERBOSE_API
) {
1510 if (samples
== NO_SAMPLES
)
1511 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1513 _mesa_lookup_enum_by_nr(target
),
1514 _mesa_lookup_enum_by_nr(internalFormat
),
1517 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1519 _mesa_lookup_enum_by_nr(target
),
1520 _mesa_lookup_enum_by_nr(internalFormat
),
1521 width
, height
, samples
);
1524 if (target
!= GL_RENDERBUFFER_EXT
) {
1525 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1529 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1530 if (baseFormat
== 0) {
1531 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1532 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1536 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1537 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1541 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1542 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1546 if (samples
== NO_SAMPLES
) {
1547 /* NumSamples == 0 indicates non-multisampling */
1551 /* check the sample count;
1552 * note: driver may choose to use more samples than what's requested
1554 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1555 internalFormat
, samples
);
1556 if (sample_count_error
!= GL_NO_ERROR
) {
1557 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1562 rb
= ctx
->CurrentRenderbuffer
;
1564 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1568 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1570 if (rb
->InternalFormat
== internalFormat
&&
1571 rb
->Width
== (GLuint
) width
&&
1572 rb
->Height
== (GLuint
) height
&&
1573 rb
->NumSamples
== samples
) {
1574 /* no change in allocation needed */
1578 /* These MUST get set by the AllocStorage func */
1579 rb
->Format
= MESA_FORMAT_NONE
;
1580 rb
->NumSamples
= samples
;
1582 /* Now allocate the storage */
1583 ASSERT(rb
->AllocStorage
);
1584 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1585 /* No error - check/set fields now */
1586 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1587 assert(rb
->Width
== (GLuint
) width
);
1588 assert(rb
->Height
== (GLuint
) height
);
1589 rb
->InternalFormat
= internalFormat
;
1590 rb
->_BaseFormat
= baseFormat
;
1591 assert(rb
->_BaseFormat
!= 0);
1594 /* Probably ran out of memory - clear the fields */
1597 rb
->Format
= MESA_FORMAT_NONE
;
1598 rb
->InternalFormat
= GL_NONE
;
1599 rb
->_BaseFormat
= GL_NONE
;
1603 /* Invalidate the framebuffers the renderbuffer is attached in. */
1604 if (rb
->AttachedAnytime
) {
1605 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1611 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1613 struct gl_renderbuffer
*rb
;
1614 GET_CURRENT_CONTEXT(ctx
);
1616 if (!ctx
->Extensions
.OES_EGL_image
) {
1617 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1618 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1622 if (target
!= GL_RENDERBUFFER
) {
1623 _mesa_error(ctx
, GL_INVALID_ENUM
,
1624 "EGLImageTargetRenderbufferStorageOES");
1628 rb
= ctx
->CurrentRenderbuffer
;
1630 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1631 "EGLImageTargetRenderbufferStorageOES");
1635 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1637 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1642 * Helper function for _mesa_GetRenderbufferParameteriv() and
1643 * _mesa_GetFramebufferAttachmentParameteriv()
1644 * We have to be careful to respect the base format. For example, if a
1645 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1646 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1647 * we need to return zero.
1650 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1652 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1653 return _mesa_get_format_bits(format
, pname
);
1661 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1662 GLsizei width
, GLsizei height
)
1664 /* GL_ARB_fbo says calling this function is equivalent to calling
1665 * glRenderbufferStorageMultisample() with samples=0. We pass in
1666 * a token value here just for error reporting purposes.
1668 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1673 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1674 GLenum internalFormat
,
1675 GLsizei width
, GLsizei height
)
1677 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1682 * OpenGL ES version of glRenderBufferStorage.
1685 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1686 GLsizei width
, GLsizei height
)
1688 switch (internalFormat
) {
1690 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1691 /* choose a closest format */
1692 internalFormat
= GL_RGB5
;
1698 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1703 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1705 struct gl_renderbuffer
*rb
;
1706 GET_CURRENT_CONTEXT(ctx
);
1708 if (target
!= GL_RENDERBUFFER_EXT
) {
1709 _mesa_error(ctx
, GL_INVALID_ENUM
,
1710 "glGetRenderbufferParameterivEXT(target)");
1714 rb
= ctx
->CurrentRenderbuffer
;
1716 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1717 "glGetRenderbufferParameterivEXT");
1721 /* No need to flush here since we're just quering state which is
1722 * not effected by rendering.
1726 case GL_RENDERBUFFER_WIDTH_EXT
:
1727 *params
= rb
->Width
;
1729 case GL_RENDERBUFFER_HEIGHT_EXT
:
1730 *params
= rb
->Height
;
1732 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1733 *params
= rb
->InternalFormat
;
1735 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1736 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1737 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1738 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1739 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1740 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1741 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1743 case GL_RENDERBUFFER_SAMPLES
:
1744 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1745 || _mesa_is_gles3(ctx
)) {
1746 *params
= rb
->NumSamples
;
1751 _mesa_error(ctx
, GL_INVALID_ENUM
,
1752 "glGetRenderbufferParameterivEXT(target)");
1758 GLboolean GLAPIENTRY
1759 _mesa_IsFramebuffer(GLuint framebuffer
)
1761 GET_CURRENT_CONTEXT(ctx
);
1762 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1764 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1765 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1773 * Check if any of the attachments of the given framebuffer are textures
1774 * (render to texture). Call ctx->Driver.RenderTexture() for such
1778 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1781 ASSERT(ctx
->Driver
.RenderTexture
);
1783 if (_mesa_is_winsys_fbo(fb
))
1784 return; /* can't render to texture with winsys framebuffers */
1786 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1787 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1788 if (att
->Texture
&& _mesa_get_attachment_teximage(att
)) {
1789 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1796 * Examine all the framebuffer's attachments to see if any are textures.
1797 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1798 * notify the device driver that the texture image may have changed.
1801 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1803 if (_mesa_is_winsys_fbo(fb
))
1804 return; /* can't render to texture with winsys framebuffers */
1806 if (ctx
->Driver
.FinishRenderTexture
) {
1808 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1809 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1810 if (att
->Texture
&& att
->Renderbuffer
) {
1811 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1819 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
1821 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1822 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1823 GLboolean bindReadBuf
, bindDrawBuf
;
1824 GET_CURRENT_CONTEXT(ctx
);
1827 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1828 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1829 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1833 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1834 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1835 "glBindFramebufferEXT(unsupported)");
1840 case GL_DRAW_FRAMEBUFFER_EXT
:
1841 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1842 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1845 bindDrawBuf
= GL_TRUE
;
1846 bindReadBuf
= GL_FALSE
;
1848 case GL_READ_FRAMEBUFFER_EXT
:
1849 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1850 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1853 bindDrawBuf
= GL_FALSE
;
1854 bindReadBuf
= GL_TRUE
;
1856 case GL_FRAMEBUFFER_EXT
:
1857 bindDrawBuf
= GL_TRUE
;
1858 bindReadBuf
= GL_TRUE
;
1861 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1866 /* Binding a user-created framebuffer object */
1867 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1868 if (newDrawFb
== &DummyFramebuffer
) {
1869 /* ID was reserved, but no real framebuffer object made yet */
1873 && _mesa_is_desktop_gl(ctx
)
1874 && ctx
->Extensions
.ARB_framebuffer_object
) {
1875 /* All FBO IDs must be Gen'd */
1876 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1881 /* create new framebuffer object */
1882 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1884 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1887 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1889 newReadFb
= newDrawFb
;
1892 /* Binding the window system framebuffer (which was originally set
1893 * with MakeCurrent).
1895 newDrawFb
= ctx
->WinSysDrawBuffer
;
1896 newReadFb
= ctx
->WinSysReadBuffer
;
1900 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1902 /* save pointers to current/old framebuffers */
1903 oldDrawFb
= ctx
->DrawBuffer
;
1904 oldReadFb
= ctx
->ReadBuffer
;
1906 /* check if really changing bindings */
1907 if (oldDrawFb
== newDrawFb
)
1908 bindDrawBuf
= GL_FALSE
;
1909 if (oldReadFb
== newReadFb
)
1910 bindReadBuf
= GL_FALSE
;
1913 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1915 * We also check if we're beginning and/or ending render-to-texture.
1916 * When a framebuffer with texture attachments is unbound, call
1917 * ctx->Driver.FinishRenderTexture().
1918 * When a framebuffer with texture attachments is bound, call
1919 * ctx->Driver.RenderTexture().
1921 * Note that if the ReadBuffer has texture attachments we don't consider
1922 * that a render-to-texture case.
1925 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1927 /* check if old readbuffer was render-to-texture */
1928 check_end_texture_render(ctx
, oldReadFb
);
1930 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1934 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1936 /* check if old framebuffer had any texture attachments */
1938 check_end_texture_render(ctx
, oldDrawFb
);
1940 /* check if newly bound framebuffer has any texture attachments */
1941 check_begin_texture_render(ctx
, newDrawFb
);
1943 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1946 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1947 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1953 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
1956 GET_CURRENT_CONTEXT(ctx
);
1958 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1960 for (i
= 0; i
< n
; i
++) {
1961 if (framebuffers
[i
] > 0) {
1962 struct gl_framebuffer
*fb
;
1963 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1965 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1967 /* check if deleting currently bound framebuffer object */
1968 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1969 /* separate draw/read binding points */
1970 if (fb
== ctx
->DrawBuffer
) {
1972 ASSERT(fb
->RefCount
>= 2);
1973 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1975 if (fb
== ctx
->ReadBuffer
) {
1977 ASSERT(fb
->RefCount
>= 2);
1978 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT
, 0);
1982 /* only one binding point for read/draw buffers */
1983 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1985 ASSERT(fb
->RefCount
>= 2);
1986 _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT
, 0);
1990 /* remove from hash table immediately, to free the ID */
1991 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1993 if (fb
!= &DummyFramebuffer
) {
1994 /* But the object will not be freed until it's no longer
1995 * bound in any context.
1997 _mesa_reference_framebuffer(&fb
, NULL
);
2006 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2008 GET_CURRENT_CONTEXT(ctx
);
2013 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2020 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2022 for (i
= 0; i
< n
; i
++) {
2023 GLuint name
= first
+ i
;
2024 framebuffers
[i
] = name
;
2025 /* insert dummy placeholder into hash table */
2026 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
2027 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2028 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
2035 _mesa_CheckFramebufferStatus(GLenum target
)
2037 struct gl_framebuffer
*buffer
;
2038 GET_CURRENT_CONTEXT(ctx
);
2040 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2042 if (MESA_VERBOSE
& VERBOSE_API
)
2043 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2044 _mesa_lookup_enum_by_nr(target
));
2046 buffer
= get_framebuffer_target(ctx
, target
);
2048 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2052 if (_mesa_is_winsys_fbo(buffer
)) {
2053 /* The window system / default framebuffer is always complete */
2054 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2057 /* No need to flush here */
2059 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2060 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2063 return buffer
->_Status
;
2068 * Replicate the src attachment point. Used by framebuffer_texture() when
2069 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2070 * GL_STENCIL_ATTACHMENT.
2073 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2074 gl_buffer_index dst
,
2075 gl_buffer_index src
)
2077 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2078 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2080 assert(src_att
->Texture
!= NULL
);
2081 assert(src_att
->Renderbuffer
!= NULL
);
2083 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2084 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2085 dst_att
->Type
= src_att
->Type
;
2086 dst_att
->Complete
= src_att
->Complete
;
2087 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2088 dst_att
->Zoffset
= src_att
->Zoffset
;
2093 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2094 * glFramebufferTextureLayerEXT().
2095 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
2096 * get textarget=0 in that case.
2099 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2100 GLenum attachment
, GLenum textarget
, GLuint texture
,
2101 GLint level
, GLint zoffset
)
2103 struct gl_renderbuffer_attachment
*att
;
2104 struct gl_texture_object
*texObj
= NULL
;
2105 struct gl_framebuffer
*fb
;
2106 GLenum maxLevelsTarget
;
2108 fb
= get_framebuffer_target(ctx
, target
);
2110 _mesa_error(ctx
, GL_INVALID_ENUM
,
2111 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2115 /* check framebuffer binding */
2116 if (_mesa_is_winsys_fbo(fb
)) {
2117 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2118 "glFramebufferTexture%sEXT", caller
);
2122 /* The textarget, level, and zoffset parameters are only validated if
2123 * texture is non-zero.
2126 GLboolean err
= GL_TRUE
;
2128 texObj
= _mesa_lookup_texture(ctx
, texture
);
2129 if (texObj
!= NULL
) {
2130 if (textarget
== 0) {
2131 /* If textarget == 0 it means we're being called by
2132 * glFramebufferTextureLayer() and textarget is not used.
2133 * The only legal texture types for that function are 3D and
2134 * 1D/2D arrays textures.
2136 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2137 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2138 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2139 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2140 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2143 /* Make sure textarget is consistent with the texture's type */
2144 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2145 ? !_mesa_is_cube_face(textarget
)
2146 : (texObj
->Target
!= textarget
);
2150 /* can't render to a non-existant texture */
2151 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2152 "glFramebufferTexture%sEXT(non existant texture)",
2158 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2159 "glFramebufferTexture%sEXT(texture target mismatch)",
2164 if (texObj
->Target
== GL_TEXTURE_3D
) {
2165 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2166 if (zoffset
< 0 || zoffset
>= maxSize
) {
2167 _mesa_error(ctx
, GL_INVALID_VALUE
,
2168 "glFramebufferTexture%sEXT(zoffset)", caller
);
2172 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2173 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2174 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2175 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2177 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2178 _mesa_error(ctx
, GL_INVALID_VALUE
,
2179 "glFramebufferTexture%sEXT(layer)", caller
);
2184 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2186 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2187 _mesa_error(ctx
, GL_INVALID_VALUE
,
2188 "glFramebufferTexture%sEXT(level)", caller
);
2193 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2195 _mesa_error(ctx
, GL_INVALID_ENUM
,
2196 "glFramebufferTexture%sEXT(attachment)", caller
);
2200 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2202 _glthread_LOCK_MUTEX(fb
->Mutex
);
2204 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2205 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2206 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2207 _mesa_tex_target_to_face(textarget
) ==
2208 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2209 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2210 /* The texture object is already attached to the stencil attachment
2211 * point. Don't create a new renderbuffer; just reuse the stencil
2212 * attachment's. This is required to prevent a GL error in
2213 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2215 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2217 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2218 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2219 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2220 _mesa_tex_target_to_face(textarget
) ==
2221 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2222 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2223 /* As above, but with depth and stencil transposed. */
2224 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2227 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2229 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2230 /* Above we created a new renderbuffer and attached it to the
2231 * depth attachment point. Now attach it to the stencil attachment
2234 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2235 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2240 /* Set the render-to-texture flag. We'll check this flag in
2241 * glTexImage() and friends to determine if we need to revalidate
2242 * any FBOs that might be rendering into this texture.
2243 * This flag never gets cleared since it's non-trivial to determine
2244 * when all FBOs might be done rendering to this texture. That's OK
2245 * though since it's uncommon to render to a texture then repeatedly
2246 * call glTexImage() to change images in the texture.
2248 texObj
->_RenderToTexture
= GL_TRUE
;
2251 _mesa_remove_attachment(ctx
, att
);
2252 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2253 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2254 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2258 invalidate_framebuffer(fb
);
2260 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2266 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2267 GLenum textarget
, GLuint texture
, GLint level
)
2269 GET_CURRENT_CONTEXT(ctx
);
2274 switch (textarget
) {
2278 case GL_TEXTURE_1D_ARRAY
:
2279 error
= !ctx
->Extensions
.EXT_texture_array
;
2286 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2287 "glFramebufferTexture1DEXT(textarget=%s)",
2288 _mesa_lookup_enum_by_nr(textarget
));
2293 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2299 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2300 GLenum textarget
, GLuint texture
, GLint level
)
2302 GET_CURRENT_CONTEXT(ctx
);
2307 switch (textarget
) {
2311 case GL_TEXTURE_RECTANGLE
:
2312 error
= _mesa_is_gles(ctx
)
2313 || !ctx
->Extensions
.NV_texture_rectangle
;
2315 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2316 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2317 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2318 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2319 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2320 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2321 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2323 case GL_TEXTURE_2D_ARRAY
:
2324 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2325 || !ctx
->Extensions
.EXT_texture_array
;
2327 case GL_TEXTURE_2D_MULTISAMPLE
:
2328 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2329 error
= _mesa_is_gles(ctx
)
2330 || !ctx
->Extensions
.ARB_texture_multisample
;
2337 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2338 "glFramebufferTexture2DEXT(textarget=%s)",
2339 _mesa_lookup_enum_by_nr(textarget
));
2344 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2350 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2351 GLenum textarget
, GLuint texture
,
2352 GLint level
, GLint zoffset
)
2354 GET_CURRENT_CONTEXT(ctx
);
2356 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2357 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2358 "glFramebufferTexture3DEXT(textarget)");
2362 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2368 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2369 GLuint texture
, GLint level
, GLint layer
)
2371 GET_CURRENT_CONTEXT(ctx
);
2373 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2379 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2380 GLenum renderbufferTarget
,
2381 GLuint renderbuffer
)
2383 struct gl_renderbuffer_attachment
*att
;
2384 struct gl_framebuffer
*fb
;
2385 struct gl_renderbuffer
*rb
;
2386 GET_CURRENT_CONTEXT(ctx
);
2388 fb
= get_framebuffer_target(ctx
, target
);
2390 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2394 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2395 _mesa_error(ctx
, GL_INVALID_ENUM
,
2396 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2400 if (_mesa_is_winsys_fbo(fb
)) {
2401 /* Can't attach new renderbuffers to a window system framebuffer */
2402 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2406 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2408 _mesa_error(ctx
, GL_INVALID_ENUM
,
2409 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2410 _mesa_lookup_enum_by_nr(attachment
));
2415 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2417 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2418 "glFramebufferRenderbufferEXT(non-existant"
2419 " renderbuffer %u)", renderbuffer
);
2422 else if (rb
== &DummyRenderbuffer
) {
2423 /* This is what NVIDIA does */
2424 _mesa_error(ctx
, GL_INVALID_VALUE
,
2425 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2431 /* remove renderbuffer attachment */
2435 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2436 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2437 /* make sure the renderbuffer is a depth/stencil format */
2438 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2439 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2440 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2441 "glFramebufferRenderbufferEXT(renderbuffer"
2442 " is not DEPTH_STENCIL format)");
2448 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2450 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2451 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2453 /* Some subsequent GL commands may depend on the framebuffer's visual
2454 * after the binding is updated. Update visual info now.
2456 _mesa_update_framebuffer_visual(ctx
, fb
);
2461 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2462 GLenum pname
, GLint
*params
)
2464 const struct gl_renderbuffer_attachment
*att
;
2465 struct gl_framebuffer
*buffer
;
2467 GET_CURRENT_CONTEXT(ctx
);
2469 /* The error differs in GL and GLES. */
2470 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2472 buffer
= get_framebuffer_target(ctx
, target
);
2474 _mesa_error(ctx
, GL_INVALID_ENUM
,
2475 "glGetFramebufferAttachmentParameterivEXT(target)");
2479 if (_mesa_is_winsys_fbo(buffer
)) {
2480 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2483 * "If the framebuffer currently bound to target is zero, then
2484 * INVALID_OPERATION is generated."
2486 * The EXT_framebuffer_object spec has the same wording, and the
2487 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2490 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2491 && !_mesa_is_gles3(ctx
)) {
2492 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2493 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2497 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2498 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2499 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2500 "glGetFramebufferAttachmentParameteriv(attachment)");
2503 /* the default / window-system FBO */
2504 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2507 /* user-created framebuffer FBO */
2508 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2512 _mesa_error(ctx
, GL_INVALID_ENUM
,
2513 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2517 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2518 /* the depth and stencil attachments must point to the same buffer */
2519 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2520 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2521 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2522 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2523 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2524 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2525 " attachments differ)");
2530 /* No need to flush here */
2533 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2534 *params
= _mesa_is_winsys_fbo(buffer
)
2535 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2537 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2538 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2539 *params
= att
->Renderbuffer
->Name
;
2541 else if (att
->Type
== GL_TEXTURE
) {
2542 *params
= att
->Texture
->Name
;
2545 assert(att
->Type
== GL_NONE
);
2546 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2549 goto invalid_pname_enum
;
2553 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2554 if (att
->Type
== GL_TEXTURE
) {
2555 *params
= att
->TextureLevel
;
2557 else if (att
->Type
== GL_NONE
) {
2558 _mesa_error(ctx
, err
,
2559 "glGetFramebufferAttachmentParameterivEXT(pname)");
2562 goto invalid_pname_enum
;
2565 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2566 if (att
->Type
== GL_TEXTURE
) {
2567 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2568 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2574 else if (att
->Type
== GL_NONE
) {
2575 _mesa_error(ctx
, err
,
2576 "glGetFramebufferAttachmentParameterivEXT(pname)");
2579 goto invalid_pname_enum
;
2582 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2583 if (ctx
->API
== API_OPENGLES
) {
2584 goto invalid_pname_enum
;
2585 } else if (att
->Type
== GL_NONE
) {
2586 _mesa_error(ctx
, err
,
2587 "glGetFramebufferAttachmentParameterivEXT(pname)");
2588 } else if (att
->Type
== GL_TEXTURE
) {
2589 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2590 *params
= att
->Zoffset
;
2597 goto invalid_pname_enum
;
2600 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2601 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2602 && !_mesa_is_gles3(ctx
)) {
2603 goto invalid_pname_enum
;
2605 else if (att
->Type
== GL_NONE
) {
2606 _mesa_error(ctx
, err
,
2607 "glGetFramebufferAttachmentParameterivEXT(pname)");
2610 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2611 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2614 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2615 * if the sRGB conversion is unsupported. */
2616 *params
= GL_LINEAR
;
2620 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2621 if ((ctx
->API
!= API_OPENGL_COMPAT
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2622 && ctx
->API
!= API_OPENGL_CORE
2623 && !_mesa_is_gles3(ctx
)) {
2624 goto invalid_pname_enum
;
2626 else if (att
->Type
== GL_NONE
) {
2627 _mesa_error(ctx
, err
,
2628 "glGetFramebufferAttachmentParameterivEXT(pname)");
2631 gl_format format
= att
->Renderbuffer
->Format
;
2633 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2636 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2637 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2638 * generate an INVALID_OPERATION error.
2640 if (_mesa_is_gles3(ctx
) && attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2641 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2642 "glGetFramebufferAttachmentParameteriv(cannot query "
2643 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2644 "GL_DEPTH_STENCIL_ATTACHMENT");
2648 if (format
== MESA_FORMAT_S8
) {
2652 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2653 /* depends on the attachment parameter */
2654 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2662 *params
= _mesa_get_format_datatype(format
);
2666 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2667 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2668 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2669 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2670 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2671 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2672 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2673 && !_mesa_is_gles3(ctx
)) {
2674 goto invalid_pname_enum
;
2676 else if (att
->Type
== GL_NONE
) {
2677 _mesa_error(ctx
, err
,
2678 "glGetFramebufferAttachmentParameterivEXT(pname)");
2680 else if (att
->Texture
) {
2681 const struct gl_texture_image
*texImage
=
2682 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2685 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2686 texImage
->TexFormat
);
2692 else if (att
->Renderbuffer
) {
2693 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2694 att
->Renderbuffer
->Format
);
2697 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2698 " invalid FBO attachment structure");
2702 goto invalid_pname_enum
;
2708 _mesa_error(ctx
, GL_INVALID_ENUM
,
2709 "glGetFramebufferAttachmentParameteriv(pname)");
2715 _mesa_GenerateMipmap(GLenum target
)
2717 struct gl_texture_image
*srcImage
;
2718 struct gl_texture_object
*texObj
;
2721 GET_CURRENT_CONTEXT(ctx
);
2723 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2727 error
= _mesa_is_gles(ctx
);
2733 error
= ctx
->API
== API_OPENGLES
;
2735 case GL_TEXTURE_CUBE_MAP
:
2736 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2738 case GL_TEXTURE_1D_ARRAY
:
2739 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2741 case GL_TEXTURE_2D_ARRAY
:
2742 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2743 || !ctx
->Extensions
.EXT_texture_array
;
2750 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2751 _mesa_lookup_enum_by_nr(target
));
2755 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2757 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2762 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2763 !_mesa_cube_complete(texObj
)) {
2764 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2765 "glGenerateMipmap(incomplete cube map)");
2769 _mesa_lock_texture(ctx
, texObj
);
2771 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2773 _mesa_unlock_texture(ctx
, texObj
);
2774 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2775 "glGenerateMipmap(zero size base image)");
2779 if (_mesa_is_enum_format_integer(srcImage
->InternalFormat
) ||
2780 _mesa_is_depthstencil_format(srcImage
->InternalFormat
) ||
2781 _mesa_is_stencil_format(srcImage
->InternalFormat
)) {
2782 _mesa_unlock_texture(ctx
, texObj
);
2783 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2784 "glGenerateMipmap(invalid internal format)");
2788 if (target
== GL_TEXTURE_CUBE_MAP
) {
2790 for (face
= 0; face
< 6; face
++)
2791 ctx
->Driver
.GenerateMipmap(ctx
,
2792 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2796 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2798 _mesa_unlock_texture(ctx
, texObj
);
2802 static const struct gl_renderbuffer_attachment
*
2803 find_attachment(const struct gl_framebuffer
*fb
,
2804 const struct gl_renderbuffer
*rb
)
2807 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2808 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2809 return &fb
->Attachment
[i
];
2816 * Helper function for checking if the datatypes of color buffers are
2817 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2819 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2820 * and any of the following conditions hold:
2821 * - The read buffer contains fixed-point or floating-point values and any
2822 * draw buffer contains neither fixed-point nor floating-point values.
2823 * - The read buffer contains unsigned integer values and any draw buffer
2824 * does not contain unsigned integer values.
2825 * - The read buffer contains signed integer values and any draw buffer
2826 * does not contain signed integer values."
2829 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2831 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2832 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2834 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2835 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2836 srcType
== GL_SIGNED_NORMALIZED
||
2837 srcType
== GL_FLOAT
);
2838 /* Boil any of those types down to GL_FLOAT */
2842 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2843 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2844 dstType
== GL_SIGNED_NORMALIZED
||
2845 dstType
== GL_FLOAT
);
2846 /* Boil any of those types down to GL_FLOAT */
2850 return srcType
== dstType
;
2855 compatible_resolve_formats(const struct gl_renderbuffer
*readRb
,
2856 const struct gl_renderbuffer
*drawRb
)
2858 GLenum readFormat
, drawFormat
;
2860 /* The simple case where we know the backing Mesa formats are the same.
2862 if (_mesa_get_srgb_format_linear(readRb
->Format
) ==
2863 _mesa_get_srgb_format_linear(drawRb
->Format
)) {
2867 /* The Mesa formats are different, so we must check whether the internal
2868 * formats are compatible.
2870 * Under some circumstances, the user may request e.g. two GL_RGBA8
2871 * textures and get two entirely different Mesa formats like RGBA8888 and
2872 * ARGB8888. Drivers behaving like that should be able to cope with
2873 * non-matching formats by themselves, because it's not the user's fault.
2875 * Blits between linear and sRGB formats are also allowed.
2877 readFormat
= _mesa_get_nongeneric_internalformat(readRb
->InternalFormat
);
2878 drawFormat
= _mesa_get_nongeneric_internalformat(drawRb
->InternalFormat
);
2879 readFormat
= _mesa_get_linear_internalformat(readFormat
);
2880 drawFormat
= _mesa_get_linear_internalformat(drawFormat
);
2882 if (readFormat
== drawFormat
) {
2891 * Blit rectangular region, optionally from one framebuffer to another.
2893 * Note, if the src buffer is multisampled and the dest is not, this is
2894 * when the samples must be resolved to a single color.
2897 _mesa_BlitFramebuffer(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2898 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2899 GLbitfield mask
, GLenum filter
)
2901 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2902 GL_DEPTH_BUFFER_BIT
|
2903 GL_STENCIL_BUFFER_BIT
);
2904 const struct gl_framebuffer
*readFb
, *drawFb
;
2905 GET_CURRENT_CONTEXT(ctx
);
2907 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2909 if (MESA_VERBOSE
& VERBOSE_API
)
2911 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2912 srcX0
, srcY0
, srcX1
, srcY1
,
2913 dstX0
, dstY0
, dstX1
, dstY1
,
2914 mask
, _mesa_lookup_enum_by_nr(filter
));
2916 if (ctx
->NewState
) {
2917 _mesa_update_state(ctx
);
2920 readFb
= ctx
->ReadBuffer
;
2921 drawFb
= ctx
->DrawBuffer
;
2923 if (!readFb
|| !drawFb
) {
2924 /* This will normally never happen but someday we may want to
2925 * support MakeCurrent() with no drawables.
2930 /* check for complete framebuffers */
2931 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2932 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2933 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2934 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2938 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2939 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2943 if (mask
& ~legalMaskBits
) {
2944 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2948 /* depth/stencil must be blitted with nearest filtering */
2949 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2950 && filter
!= GL_NEAREST
) {
2951 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2952 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2956 /* get color read/draw renderbuffers */
2957 if (mask
& GL_COLOR_BUFFER_BIT
) {
2958 const GLuint numColorDrawBuffers
= ctx
->DrawBuffer
->_NumColorDrawBuffers
;
2959 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
2960 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
2963 /* From the EXT_framebuffer_object spec:
2965 * "If a buffer is specified in <mask> and does not exist in both
2966 * the read and draw framebuffers, the corresponding bit is silently
2969 if (!colorReadRb
|| numColorDrawBuffers
== 0) {
2970 mask
&= ~GL_COLOR_BUFFER_BIT
;
2973 for (i
= 0; i
< numColorDrawBuffers
; i
++) {
2974 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
2978 /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
2979 * ES 3.0.1 spec says:
2981 * "If the source and destination buffers are identical, an
2982 * INVALID_OPERATION error is generated. Different mipmap
2983 * levels of a texture, different layers of a three-
2984 * dimensional texture or two-dimensional array texture, and
2985 * different faces of a cube map texture do not constitute
2986 * identical buffers."
2988 if (_mesa_is_gles3(ctx
) && (colorDrawRb
== colorReadRb
)) {
2989 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2990 "glBlitFramebuffer(source and destination color "
2991 "buffer cannot be the same)");
2995 if (!compatible_color_datatypes(colorReadRb
->Format
,
2996 colorDrawRb
->Format
)) {
2997 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2998 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
3001 /* extra checks for multisample copies... */
3002 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3003 /* color formats must match */
3004 if (!compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
3005 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3006 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
3011 if (filter
== GL_LINEAR
) {
3012 /* 3.1 spec, page 199:
3013 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3014 * if filter is LINEAR and read buffer contains integer data."
3016 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3017 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3018 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3019 "glBlitFramebufferEXT(integer color type)");
3026 if (mask
& GL_STENCIL_BUFFER_BIT
) {
3027 struct gl_renderbuffer
*readRb
=
3028 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3029 struct gl_renderbuffer
*drawRb
=
3030 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3032 /* From the EXT_framebuffer_object spec:
3034 * "If a buffer is specified in <mask> and does not exist in both
3035 * the read and draw framebuffers, the corresponding bit is silently
3038 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3039 mask
&= ~GL_STENCIL_BUFFER_BIT
;
3042 int read_z_bits
, draw_z_bits
;
3044 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3045 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3046 "glBlitFramebuffer(source and destination stencil "
3047 "buffer cannot be the same)");
3051 if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
3052 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
3053 /* There is no need to check the stencil datatype here, because
3054 * there is only one: GL_UNSIGNED_INT.
3056 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3057 "glBlitFramebuffer(stencil attachment format mismatch)");
3061 read_z_bits
= _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
);
3062 draw_z_bits
= _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
);
3064 /* If both buffers also have depth data, the depth formats must match
3065 * as well. If one doesn't have depth, it's not blitted, so we should
3066 * ignore the depth format check.
3068 if (read_z_bits
> 0 && draw_z_bits
> 0 &&
3069 (read_z_bits
!= draw_z_bits
||
3070 _mesa_get_format_datatype(readRb
->Format
) !=
3071 _mesa_get_format_datatype(drawRb
->Format
))) {
3073 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3074 "(stencil attachment depth format mismatch)");
3080 if (mask
& GL_DEPTH_BUFFER_BIT
) {
3081 struct gl_renderbuffer
*readRb
=
3082 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3083 struct gl_renderbuffer
*drawRb
=
3084 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3086 /* From the EXT_framebuffer_object spec:
3088 * "If a buffer is specified in <mask> and does not exist in both
3089 * the read and draw framebuffers, the corresponding bit is silently
3092 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3093 mask
&= ~GL_DEPTH_BUFFER_BIT
;
3096 int read_s_bit
, draw_s_bit
;
3098 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3099 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3100 "glBlitFramebuffer(source and destination depth "
3101 "buffer cannot be the same)");
3105 if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
3106 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
3107 (_mesa_get_format_datatype(readRb
->Format
) !=
3108 _mesa_get_format_datatype(drawRb
->Format
))) {
3109 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3110 "glBlitFramebuffer(depth attachment format mismatch)");
3114 read_s_bit
= _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
);
3115 draw_s_bit
= _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
);
3117 /* If both buffers also have stencil data, the stencil formats must
3118 * match as well. If one doesn't have stencil, it's not blitted, so
3119 * we should ignore the stencil format check.
3121 if (read_s_bit
> 0 && draw_s_bit
> 0 && read_s_bit
!= draw_s_bit
) {
3122 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3123 "(depth attachment stencil bits mismatch)");
3130 if (_mesa_is_gles3(ctx
)) {
3131 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3134 * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
3135 * an INVALID_OPERATION error is generated."
3137 if (drawFb
->Visual
.samples
> 0) {
3138 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3139 "glBlitFramebuffer(destination samples must be 0)");
3143 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3146 * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
3147 * no copy is performed and an INVALID_OPERATION error is generated
3148 * if the formats of the read and draw framebuffers are not
3149 * identical or if the source and destination rectangles are not
3150 * defined with the same (X0, Y0) and (X1, Y1) bounds."
3152 * The format check was made above because desktop OpenGL has the same
3155 if (readFb
->Visual
.samples
> 0
3156 && (srcX0
!= dstX0
|| srcY0
!= dstY0
3157 || srcX1
!= dstX1
|| srcY1
!= dstY1
)) {
3158 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3159 "glBlitFramebuffer(bad src/dst multisample region)");
3163 if (readFb
->Visual
.samples
> 0 &&
3164 drawFb
->Visual
.samples
> 0 &&
3165 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
3166 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3167 "glBlitFramebufferEXT(mismatched samples)");
3171 /* extra checks for multisample copies... */
3172 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3173 /* src and dest region sizes must be the same */
3174 if (abs(srcX1
- srcX0
) != abs(dstX1
- dstX0
) ||
3175 abs(srcY1
- srcY0
) != abs(dstY1
- dstY0
)) {
3176 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3177 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
3183 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3184 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3190 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3191 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3194 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3196 srcX0
, srcY0
, srcX1
, srcY1
,
3197 dstX0
, dstY0
, dstX1
, dstY1
,
3200 const struct gl_renderbuffer_attachment
*att
;
3202 att
= find_attachment(readFb
, colorReadRb
);
3203 printf(" Src FBO %u RB %u (%dx%d) ",
3204 readFb
->Name
, colorReadRb
->Name
,
3205 colorReadRb
->Width
, colorReadRb
->Height
);
3206 if (att
&& att
->Texture
) {
3207 printf("Tex %u tgt 0x%x level %u face %u",
3209 att
->Texture
->Target
,
3215 /* Print all active color render buffers */
3216 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
3217 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3221 att
= find_attachment(drawFb
, colorDrawRb
);
3222 printf(" Dst FBO %u RB %u (%dx%d) ",
3223 drawFb
->Name
, colorDrawRb
->Name
,
3224 colorDrawRb
->Width
, colorDrawRb
->Height
);
3225 if (att
&& att
->Texture
) {
3226 printf("Tex %u tgt 0x%x level %u face %u",
3228 att
->Texture
->Target
,
3238 (srcX1
- srcX0
) == 0 || (srcY1
- srcY0
) == 0 ||
3239 (dstX1
- dstX0
) == 0 || (dstY1
- dstY0
) == 0) {
3243 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3244 ctx
->Driver
.BlitFramebuffer(ctx
,
3245 srcX0
, srcY0
, srcX1
, srcY1
,
3246 dstX0
, dstY0
, dstX1
, dstY1
,
3252 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3253 const GLenum
*attachments
, GLint x
, GLint y
,
3254 GLsizei width
, GLsizei height
, const char *name
)
3257 struct gl_framebuffer
*fb
;
3258 GET_CURRENT_CONTEXT(ctx
);
3260 fb
= get_framebuffer_target(ctx
, target
);
3262 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3266 if (numAttachments
< 0) {
3267 _mesa_error(ctx
, GL_INVALID_VALUE
,
3268 "%s(numAttachments < 0)", name
);
3272 /* The GL_ARB_invalidate_subdata spec says:
3274 * "If an attachment is specified that does not exist in the
3275 * framebuffer bound to <target>, it is ignored."
3279 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3280 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3281 * INVALID_OPERATION is generated."
3283 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3284 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3285 * set of retrictions).
3287 for (i
= 0; i
< numAttachments
; i
++) {
3288 if (_mesa_is_winsys_fbo(fb
)) {
3289 switch (attachments
[i
]) {
3295 /* Accumulation buffers and auxilary buffers were removed in
3296 * OpenGL 3.1, and they never existed in OpenGL ES.
3298 if (ctx
->API
!= API_OPENGL_COMPAT
)
3308 case GL_FRONT_RIGHT
:
3309 if (!_mesa_is_desktop_gl(ctx
))
3316 switch (attachments
[i
]) {
3317 case GL_DEPTH_ATTACHMENT
:
3318 case GL_STENCIL_ATTACHMENT
:
3320 case GL_COLOR_ATTACHMENT0
:
3321 case GL_COLOR_ATTACHMENT1
:
3322 case GL_COLOR_ATTACHMENT2
:
3323 case GL_COLOR_ATTACHMENT3
:
3324 case GL_COLOR_ATTACHMENT4
:
3325 case GL_COLOR_ATTACHMENT5
:
3326 case GL_COLOR_ATTACHMENT6
:
3327 case GL_COLOR_ATTACHMENT7
:
3328 case GL_COLOR_ATTACHMENT8
:
3329 case GL_COLOR_ATTACHMENT9
:
3330 case GL_COLOR_ATTACHMENT10
:
3331 case GL_COLOR_ATTACHMENT11
:
3332 case GL_COLOR_ATTACHMENT12
:
3333 case GL_COLOR_ATTACHMENT13
:
3334 case GL_COLOR_ATTACHMENT14
:
3335 case GL_COLOR_ATTACHMENT15
: {
3336 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3337 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3338 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3339 "%s(attachment >= max. color attachments)", name
);
3349 /* We don't actually do anything for this yet. Just return after
3350 * validating the parameters and generating the required errors.
3355 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3360 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3361 const GLenum
*attachments
, GLint x
, GLint y
,
3362 GLsizei width
, GLsizei height
)
3364 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3365 x
, y
, width
, height
,
3366 "glInvalidateSubFramebuffer");
3370 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3371 const GLenum
*attachments
)
3373 /* The GL_ARB_invalidate_subdata spec says:
3377 * void InvalidateFramebuffer(enum target,
3378 * sizei numAttachments,
3379 * const enum *attachments);
3381 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3382 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3383 * <MAX_VIEWPORT_DIMS[1]> respectively."
3385 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3386 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3387 "glInvalidateFramebuffer");
3391 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3392 const GLenum
*attachments
)
3394 struct gl_framebuffer
*fb
;
3397 GET_CURRENT_CONTEXT(ctx
);
3399 fb
= get_framebuffer_target(ctx
, target
);
3401 _mesa_error(ctx
, GL_INVALID_ENUM
,
3402 "glDiscardFramebufferEXT(target %s)",
3403 _mesa_lookup_enum_by_nr(target
));
3407 if (numAttachments
< 0) {
3408 _mesa_error(ctx
, GL_INVALID_VALUE
,
3409 "glDiscardFramebufferEXT(numAttachments < 0)");
3413 for (i
= 0; i
< numAttachments
; i
++) {
3414 switch (attachments
[i
]) {
3418 if (_mesa_is_user_fbo(fb
))
3421 case GL_COLOR_ATTACHMENT0
:
3422 case GL_DEPTH_ATTACHMENT
:
3423 case GL_STENCIL_ATTACHMENT
:
3424 if (_mesa_is_winsys_fbo(fb
))
3432 if (ctx
->Driver
.DiscardFramebuffer
)
3433 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3438 _mesa_error(ctx
, GL_INVALID_ENUM
,
3439 "glDiscardFramebufferEXT(attachment %s)",
3440 _mesa_lookup_enum_by_nr(attachments
[i
]));