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
;
788 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
790 /* Start at -2 to more easily loop over all attachment points.
795 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
796 struct gl_renderbuffer_attachment
*att
;
801 * XXX for ARB_fbo, only check color buffers that are named by
802 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
805 /* check for attachment completeness
808 att
= &fb
->Attachment
[BUFFER_DEPTH
];
809 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
810 if (!att
->Complete
) {
811 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
812 fbo_incomplete("depth attachment incomplete", -1);
817 att
= &fb
->Attachment
[BUFFER_STENCIL
];
818 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
819 if (!att
->Complete
) {
820 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
821 fbo_incomplete("stencil attachment incomplete", -1);
826 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
827 test_attachment_completeness(ctx
, GL_COLOR
, att
);
828 if (!att
->Complete
) {
829 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
830 fbo_incomplete("color attachment incomplete", i
);
835 /* get width, height, format of the renderbuffer/texture
837 if (att
->Type
== GL_TEXTURE
) {
838 const struct gl_texture_image
*texImg
=
839 _mesa_get_attachment_teximage(att
);
840 minWidth
= MIN2(minWidth
, texImg
->Width
);
841 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
842 minHeight
= MIN2(minHeight
, texImg
->Height
);
843 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
844 f
= texImg
->_BaseFormat
;
845 attFormat
= texImg
->TexFormat
;
848 if (!is_format_color_renderable(ctx
, attFormat
, texImg
->InternalFormat
) &&
849 !is_legal_depth_format(ctx
, f
)) {
850 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
851 fbo_incomplete("texture attachment incomplete", -1);
856 numSamples
= texImg
->NumSamples
;
857 else if (numSamples
!= texImg
->NumSamples
) {
858 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
859 fbo_incomplete("inconsistent sample count", -1);
863 if (fixedSampleLocations
< 0)
864 fixedSampleLocations
= texImg
->FixedSampleLocations
;
865 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
866 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
867 fbo_incomplete("inconsistent fixed sample locations", -1);
871 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
872 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
873 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
874 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
875 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
876 f
= att
->Renderbuffer
->InternalFormat
;
877 attFormat
= att
->Renderbuffer
->Format
;
881 numSamples
= att
->Renderbuffer
->NumSamples
;
882 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
883 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
884 fbo_incomplete("inconsistent sample count", -1);
888 /* RENDERBUFFER has fixedSampleLocations implicitly true */
889 if (fixedSampleLocations
< 0)
890 fixedSampleLocations
= GL_TRUE
;
891 else if (fixedSampleLocations
!= GL_TRUE
) {
892 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
893 fbo_incomplete("inconsistent fixed sample locations", -1);
898 assert(att
->Type
== GL_NONE
);
902 /* check if integer color */
903 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
905 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
907 GLenum type
= _mesa_get_format_datatype(attFormat
);
909 fb
->_AllColorBuffersFixedPoint
=
910 fb
->_AllColorBuffersFixedPoint
&&
911 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
913 fb
->_HasSNormOrFloatColorBuffer
=
914 fb
->_HasSNormOrFloatColorBuffer
||
915 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
918 /* Error-check width, height, format */
919 if (numImages
== 1) {
926 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
927 /* check that width, height, format are same */
928 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
929 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
930 fbo_incomplete("width or height mismatch", -1);
933 /* check that all color buffers are the same format */
934 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
935 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
936 fbo_incomplete("format mismatch", -1);
942 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
944 if (att
->Type
== GL_RENDERBUFFER
&&
945 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
946 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
947 fbo_incomplete("unsupported renderbuffer format", i
);
952 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
953 /* Check that all DrawBuffers are present */
954 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
955 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
956 const struct gl_renderbuffer_attachment
*att
957 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
959 if (att
->Type
== GL_NONE
) {
960 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
961 fbo_incomplete("missing drawbuffer", j
);
967 /* Check that the ReadBuffer is present */
968 if (fb
->ColorReadBuffer
!= GL_NONE
) {
969 const struct gl_renderbuffer_attachment
*att
970 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
972 if (att
->Type
== GL_NONE
) {
973 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
974 fbo_incomplete("missing readbuffer", -1);
980 if (numImages
== 0) {
981 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
982 fbo_incomplete("no attachments", -1);
986 /* Provisionally set status = COMPLETE ... */
987 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
989 /* ... but the driver may say the FB is incomplete.
990 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
993 if (ctx
->Driver
.ValidateFramebuffer
) {
994 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
995 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
996 fbo_incomplete("driver marked FBO as incomplete", -1);
1000 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1002 * Note that if ARB_framebuffer_object is supported and the attached
1003 * renderbuffers/textures are different sizes, the framebuffer
1004 * width/height will be set to the smallest width/height.
1006 fb
->Width
= minWidth
;
1007 fb
->Height
= minHeight
;
1009 /* finally, update the visual info for the framebuffer */
1010 _mesa_update_framebuffer_visual(ctx
, fb
);
1015 GLboolean GLAPIENTRY
1016 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1018 GET_CURRENT_CONTEXT(ctx
);
1019 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1021 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1022 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1030 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1032 struct gl_renderbuffer
*newRb
;
1033 GET_CURRENT_CONTEXT(ctx
);
1035 if (target
!= GL_RENDERBUFFER_EXT
) {
1036 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1040 /* No need to flush here since the render buffer binding has no
1041 * effect on rendering state.
1045 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1046 if (newRb
== &DummyRenderbuffer
) {
1047 /* ID was reserved, but no real renderbuffer object made yet */
1051 && _mesa_is_desktop_gl(ctx
)
1052 && ctx
->Extensions
.ARB_framebuffer_object
) {
1053 /* All RB IDs must be Gen'd */
1054 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1059 /* create new renderbuffer object */
1060 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1062 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1065 ASSERT(newRb
->AllocStorage
);
1066 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1067 newRb
->RefCount
= 1; /* referenced by hash table */
1074 ASSERT(newRb
!= &DummyRenderbuffer
);
1076 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1081 * If the given renderbuffer is anywhere attached to the framebuffer, detach
1083 * This is used when a renderbuffer object is deleted.
1084 * The spec calls for unbinding.
1087 detach_renderbuffer(struct gl_context
*ctx
,
1088 struct gl_framebuffer
*fb
,
1089 struct gl_renderbuffer
*rb
)
1092 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1093 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
1094 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
1097 invalidate_framebuffer(fb
);
1102 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1105 GET_CURRENT_CONTEXT(ctx
);
1107 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1109 for (i
= 0; i
< n
; i
++) {
1110 if (renderbuffers
[i
] > 0) {
1111 struct gl_renderbuffer
*rb
;
1112 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1114 /* check if deleting currently bound renderbuffer object */
1115 if (rb
== ctx
->CurrentRenderbuffer
) {
1117 ASSERT(rb
->RefCount
>= 2);
1118 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1121 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1122 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1124 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1125 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1126 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1129 /* Remove from hash table immediately, to free the ID.
1130 * But the object will not be freed until it's no longer
1131 * referenced anywhere else.
1133 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1135 if (rb
!= &DummyRenderbuffer
) {
1136 /* no longer referenced by hash table */
1137 _mesa_reference_renderbuffer(&rb
, NULL
);
1146 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1148 GET_CURRENT_CONTEXT(ctx
);
1153 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1160 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1162 for (i
= 0; i
< n
; i
++) {
1163 GLuint name
= first
+ i
;
1164 renderbuffers
[i
] = name
;
1165 /* insert dummy placeholder into hash table */
1166 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1167 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1168 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1174 * Given an internal format token for a render buffer, return the
1175 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1176 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1177 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1179 * This is similar to _mesa_base_tex_format() but the set of valid
1180 * internal formats is different.
1182 * Note that even if a format is determined to be legal here, validation
1183 * of the FBO may fail if the format is not supported by the driver/GPU.
1185 * \param internalFormat as passed to glRenderbufferStorage()
1186 * \return the base internal format, or 0 if internalFormat is illegal
1189 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1192 * Notes: some formats such as alpha, luminance, etc. were added
1193 * with GL_ARB_framebuffer_object.
1195 switch (internalFormat
) {
1201 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1206 case GL_LUMINANCE12
:
1207 case GL_LUMINANCE16
:
1208 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1210 case GL_LUMINANCE_ALPHA
:
1211 case GL_LUMINANCE4_ALPHA4
:
1212 case GL_LUMINANCE6_ALPHA2
:
1213 case GL_LUMINANCE8_ALPHA8
:
1214 case GL_LUMINANCE12_ALPHA4
:
1215 case GL_LUMINANCE12_ALPHA12
:
1216 case GL_LUMINANCE16_ALPHA16
:
1217 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1218 ? GL_LUMINANCE_ALPHA
: 0;
1222 case GL_INTENSITY12
:
1223 case GL_INTENSITY16
:
1224 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1235 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1237 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1246 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1248 case GL_SRGB8_ALPHA8_EXT
:
1249 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1250 case GL_STENCIL_INDEX
:
1251 case GL_STENCIL_INDEX1_EXT
:
1252 case GL_STENCIL_INDEX4_EXT
:
1253 case GL_STENCIL_INDEX16_EXT
:
1254 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1255 * OpenGL ES, but Mesa does not currently support them.
1257 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1258 case GL_STENCIL_INDEX8_EXT
:
1259 return GL_STENCIL_INDEX
;
1260 case GL_DEPTH_COMPONENT
:
1261 case GL_DEPTH_COMPONENT32
:
1262 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1263 case GL_DEPTH_COMPONENT16
:
1264 case GL_DEPTH_COMPONENT24
:
1265 return GL_DEPTH_COMPONENT
;
1266 case GL_DEPTH_STENCIL_EXT
:
1267 return _mesa_is_desktop_gl(ctx
)
1268 && ctx
->Extensions
.EXT_packed_depth_stencil
1269 ? GL_DEPTH_STENCIL_EXT
: 0;
1270 case GL_DEPTH24_STENCIL8_EXT
:
1271 return ctx
->Extensions
.EXT_packed_depth_stencil
1272 ? GL_DEPTH_STENCIL_EXT
: 0;
1273 case GL_DEPTH_COMPONENT32F
:
1274 return ctx
->Version
>= 30
1275 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1276 ? GL_DEPTH_COMPONENT
: 0;
1277 case GL_DEPTH32F_STENCIL8
:
1278 return ctx
->Version
>= 30
1279 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1280 ? GL_DEPTH_STENCIL
: 0;
1283 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1286 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1290 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1293 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1295 /* signed normalized texture formats */
1299 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1304 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1308 case GL_RGB16_SNORM
:
1309 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1312 case GL_RGBA8_SNORM
:
1313 case GL_RGBA16_SNORM
:
1314 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1316 case GL_ALPHA_SNORM
:
1317 case GL_ALPHA8_SNORM
:
1318 case GL_ALPHA16_SNORM
:
1319 return ctx
->API
== API_OPENGL_COMPAT
&&
1320 ctx
->Extensions
.EXT_texture_snorm
&&
1321 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1324 return ((_mesa_is_desktop_gl(ctx
) &&
1325 ctx
->Extensions
.ARB_texture_rg
&&
1326 ctx
->Extensions
.ARB_texture_float
) ||
1327 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1331 return ((_mesa_is_desktop_gl(ctx
) &&
1332 ctx
->Extensions
.ARB_texture_rg
&&
1333 ctx
->Extensions
.ARB_texture_float
) ||
1334 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1338 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1342 return ((_mesa_is_desktop_gl(ctx
) &&
1343 ctx
->Extensions
.ARB_texture_float
) ||
1344 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1346 case GL_ALPHA16F_ARB
:
1347 case GL_ALPHA32F_ARB
:
1348 return ctx
->API
== API_OPENGL_COMPAT
&&
1349 ctx
->Extensions
.ARB_texture_float
&&
1350 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1351 case GL_LUMINANCE16F_ARB
:
1352 case GL_LUMINANCE32F_ARB
:
1353 return ctx
->API
== API_OPENGL_COMPAT
&&
1354 ctx
->Extensions
.ARB_texture_float
&&
1355 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1356 case GL_LUMINANCE_ALPHA16F_ARB
:
1357 case GL_LUMINANCE_ALPHA32F_ARB
:
1358 return ctx
->API
== API_OPENGL_COMPAT
&&
1359 ctx
->Extensions
.ARB_texture_float
&&
1360 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1361 case GL_INTENSITY16F_ARB
:
1362 case GL_INTENSITY32F_ARB
:
1363 return ctx
->API
== API_OPENGL_COMPAT
&&
1364 ctx
->Extensions
.ARB_texture_float
&&
1365 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1367 return (_mesa_is_desktop_gl(ctx
)
1368 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1370 case GL_R11F_G11F_B10F
:
1371 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1372 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1375 case GL_RGBA8UI_EXT
:
1376 case GL_RGBA16UI_EXT
:
1377 case GL_RGBA32UI_EXT
:
1379 case GL_RGBA16I_EXT
:
1380 case GL_RGBA32I_EXT
:
1381 return ctx
->Version
>= 30
1382 || (_mesa_is_desktop_gl(ctx
) &&
1383 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1386 case GL_RGB16UI_EXT
:
1387 case GL_RGB32UI_EXT
:
1391 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1399 return ctx
->Version
>= 30
1400 || (_mesa_is_desktop_gl(ctx
) &&
1401 ctx
->Extensions
.ARB_texture_rg
&&
1402 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1410 return ctx
->Version
>= 30
1411 || (_mesa_is_desktop_gl(ctx
) &&
1412 ctx
->Extensions
.ARB_texture_rg
&&
1413 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1415 case GL_INTENSITY8I_EXT
:
1416 case GL_INTENSITY8UI_EXT
:
1417 case GL_INTENSITY16I_EXT
:
1418 case GL_INTENSITY16UI_EXT
:
1419 case GL_INTENSITY32I_EXT
:
1420 case GL_INTENSITY32UI_EXT
:
1421 return ctx
->API
== API_OPENGL_COMPAT
&&
1422 ctx
->Extensions
.EXT_texture_integer
&&
1423 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1425 case GL_LUMINANCE8I_EXT
:
1426 case GL_LUMINANCE8UI_EXT
:
1427 case GL_LUMINANCE16I_EXT
:
1428 case GL_LUMINANCE16UI_EXT
:
1429 case GL_LUMINANCE32I_EXT
:
1430 case GL_LUMINANCE32UI_EXT
:
1431 return ctx
->API
== API_OPENGL_COMPAT
&&
1432 ctx
->Extensions
.EXT_texture_integer
&&
1433 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1435 case GL_LUMINANCE_ALPHA8I_EXT
:
1436 case GL_LUMINANCE_ALPHA8UI_EXT
:
1437 case GL_LUMINANCE_ALPHA16I_EXT
:
1438 case GL_LUMINANCE_ALPHA16UI_EXT
:
1439 case GL_LUMINANCE_ALPHA32I_EXT
:
1440 case GL_LUMINANCE_ALPHA32UI_EXT
:
1441 return ctx
->API
== API_OPENGL_COMPAT
&&
1442 ctx
->Extensions
.EXT_texture_integer
&&
1443 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1445 case GL_ALPHA8I_EXT
:
1446 case GL_ALPHA8UI_EXT
:
1447 case GL_ALPHA16I_EXT
:
1448 case GL_ALPHA16UI_EXT
:
1449 case GL_ALPHA32I_EXT
:
1450 case GL_ALPHA32UI_EXT
:
1451 return ctx
->API
== API_OPENGL_COMPAT
&&
1452 ctx
->Extensions
.EXT_texture_integer
&&
1453 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1456 return (_mesa_is_desktop_gl(ctx
) &&
1457 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1458 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1461 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1470 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1473 invalidate_rb(GLuint key
, void *data
, void *userData
)
1475 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1476 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1478 /* If this is a user-created FBO */
1479 if (_mesa_is_user_fbo(fb
)) {
1481 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1482 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1483 if (att
->Type
== GL_RENDERBUFFER
&&
1484 att
->Renderbuffer
== rb
) {
1485 /* Mark fb status as indeterminate to force re-validation */
1494 /** sentinal value, see below */
1495 #define NO_SAMPLES 1000
1499 * Helper function used by _mesa_RenderbufferStorage() and
1500 * _mesa_RenderbufferStorageMultisample().
1501 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1504 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1505 GLsizei width
, GLsizei height
, GLsizei samples
)
1507 const char *func
= samples
== NO_SAMPLES
?
1508 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1509 struct gl_renderbuffer
*rb
;
1511 GLenum sample_count_error
;
1512 GET_CURRENT_CONTEXT(ctx
);
1514 if (MESA_VERBOSE
& VERBOSE_API
) {
1515 if (samples
== NO_SAMPLES
)
1516 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1518 _mesa_lookup_enum_by_nr(target
),
1519 _mesa_lookup_enum_by_nr(internalFormat
),
1522 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1524 _mesa_lookup_enum_by_nr(target
),
1525 _mesa_lookup_enum_by_nr(internalFormat
),
1526 width
, height
, samples
);
1529 if (target
!= GL_RENDERBUFFER_EXT
) {
1530 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1534 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1535 if (baseFormat
== 0) {
1536 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1537 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1541 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1542 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1546 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1547 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1551 if (samples
== NO_SAMPLES
) {
1552 /* NumSamples == 0 indicates non-multisampling */
1556 /* check the sample count;
1557 * note: driver may choose to use more samples than what's requested
1559 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1560 internalFormat
, samples
);
1561 if (sample_count_error
!= GL_NO_ERROR
) {
1562 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1567 rb
= ctx
->CurrentRenderbuffer
;
1569 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1573 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1575 if (rb
->InternalFormat
== internalFormat
&&
1576 rb
->Width
== (GLuint
) width
&&
1577 rb
->Height
== (GLuint
) height
&&
1578 rb
->NumSamples
== samples
) {
1579 /* no change in allocation needed */
1583 /* These MUST get set by the AllocStorage func */
1584 rb
->Format
= MESA_FORMAT_NONE
;
1585 rb
->NumSamples
= samples
;
1587 /* Now allocate the storage */
1588 ASSERT(rb
->AllocStorage
);
1589 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1590 /* No error - check/set fields now */
1591 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1592 assert(rb
->Width
== (GLuint
) width
);
1593 assert(rb
->Height
== (GLuint
) height
);
1594 rb
->InternalFormat
= internalFormat
;
1595 rb
->_BaseFormat
= baseFormat
;
1596 assert(rb
->_BaseFormat
!= 0);
1599 /* Probably ran out of memory - clear the fields */
1602 rb
->Format
= MESA_FORMAT_NONE
;
1603 rb
->InternalFormat
= GL_NONE
;
1604 rb
->_BaseFormat
= GL_NONE
;
1608 /* Invalidate the framebuffers the renderbuffer is attached in. */
1609 if (rb
->AttachedAnytime
) {
1610 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1616 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1618 struct gl_renderbuffer
*rb
;
1619 GET_CURRENT_CONTEXT(ctx
);
1621 if (!ctx
->Extensions
.OES_EGL_image
) {
1622 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1623 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1627 if (target
!= GL_RENDERBUFFER
) {
1628 _mesa_error(ctx
, GL_INVALID_ENUM
,
1629 "EGLImageTargetRenderbufferStorageOES");
1633 rb
= ctx
->CurrentRenderbuffer
;
1635 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1636 "EGLImageTargetRenderbufferStorageOES");
1640 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1642 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1647 * Helper function for _mesa_GetRenderbufferParameteriv() and
1648 * _mesa_GetFramebufferAttachmentParameteriv()
1649 * We have to be careful to respect the base format. For example, if a
1650 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1651 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1652 * we need to return zero.
1655 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1657 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1658 return _mesa_get_format_bits(format
, pname
);
1666 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1667 GLsizei width
, GLsizei height
)
1669 /* GL_ARB_fbo says calling this function is equivalent to calling
1670 * glRenderbufferStorageMultisample() with samples=0. We pass in
1671 * a token value here just for error reporting purposes.
1673 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1678 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1679 GLenum internalFormat
,
1680 GLsizei width
, GLsizei height
)
1682 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1687 * OpenGL ES version of glRenderBufferStorage.
1690 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1691 GLsizei width
, GLsizei height
)
1693 switch (internalFormat
) {
1695 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1696 /* choose a closest format */
1697 internalFormat
= GL_RGB5
;
1703 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1708 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1710 struct gl_renderbuffer
*rb
;
1711 GET_CURRENT_CONTEXT(ctx
);
1713 if (target
!= GL_RENDERBUFFER_EXT
) {
1714 _mesa_error(ctx
, GL_INVALID_ENUM
,
1715 "glGetRenderbufferParameterivEXT(target)");
1719 rb
= ctx
->CurrentRenderbuffer
;
1721 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1722 "glGetRenderbufferParameterivEXT");
1726 /* No need to flush here since we're just quering state which is
1727 * not effected by rendering.
1731 case GL_RENDERBUFFER_WIDTH_EXT
:
1732 *params
= rb
->Width
;
1734 case GL_RENDERBUFFER_HEIGHT_EXT
:
1735 *params
= rb
->Height
;
1737 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1738 *params
= rb
->InternalFormat
;
1740 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1741 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1742 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1743 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1744 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1745 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1746 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1748 case GL_RENDERBUFFER_SAMPLES
:
1749 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1750 || _mesa_is_gles3(ctx
)) {
1751 *params
= rb
->NumSamples
;
1756 _mesa_error(ctx
, GL_INVALID_ENUM
,
1757 "glGetRenderbufferParameterivEXT(target)");
1763 GLboolean GLAPIENTRY
1764 _mesa_IsFramebuffer(GLuint framebuffer
)
1766 GET_CURRENT_CONTEXT(ctx
);
1767 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1769 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1770 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1778 * Check if any of the attachments of the given framebuffer are textures
1779 * (render to texture). Call ctx->Driver.RenderTexture() for such
1783 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1786 ASSERT(ctx
->Driver
.RenderTexture
);
1788 if (_mesa_is_winsys_fbo(fb
))
1789 return; /* can't render to texture with winsys framebuffers */
1791 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1792 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1793 if (att
->Texture
&& _mesa_get_attachment_teximage(att
)) {
1794 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1801 * Examine all the framebuffer's attachments to see if any are textures.
1802 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1803 * notify the device driver that the texture image may have changed.
1806 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1808 if (_mesa_is_winsys_fbo(fb
))
1809 return; /* can't render to texture with winsys framebuffers */
1811 if (ctx
->Driver
.FinishRenderTexture
) {
1813 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1814 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1815 if (att
->Texture
&& att
->Renderbuffer
) {
1816 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1824 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
1826 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1827 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1828 GLboolean bindReadBuf
, bindDrawBuf
;
1829 GET_CURRENT_CONTEXT(ctx
);
1832 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1833 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1834 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1838 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1839 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1840 "glBindFramebufferEXT(unsupported)");
1845 case GL_DRAW_FRAMEBUFFER_EXT
:
1846 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1847 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1850 bindDrawBuf
= GL_TRUE
;
1851 bindReadBuf
= GL_FALSE
;
1853 case GL_READ_FRAMEBUFFER_EXT
:
1854 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1855 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1858 bindDrawBuf
= GL_FALSE
;
1859 bindReadBuf
= GL_TRUE
;
1861 case GL_FRAMEBUFFER_EXT
:
1862 bindDrawBuf
= GL_TRUE
;
1863 bindReadBuf
= GL_TRUE
;
1866 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1871 /* Binding a user-created framebuffer object */
1872 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1873 if (newDrawFb
== &DummyFramebuffer
) {
1874 /* ID was reserved, but no real framebuffer object made yet */
1878 && _mesa_is_desktop_gl(ctx
)
1879 && ctx
->Extensions
.ARB_framebuffer_object
) {
1880 /* All FBO IDs must be Gen'd */
1881 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1886 /* create new framebuffer object */
1887 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1889 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1892 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1894 newReadFb
= newDrawFb
;
1897 /* Binding the window system framebuffer (which was originally set
1898 * with MakeCurrent).
1900 newDrawFb
= ctx
->WinSysDrawBuffer
;
1901 newReadFb
= ctx
->WinSysReadBuffer
;
1905 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1907 /* save pointers to current/old framebuffers */
1908 oldDrawFb
= ctx
->DrawBuffer
;
1909 oldReadFb
= ctx
->ReadBuffer
;
1911 /* check if really changing bindings */
1912 if (oldDrawFb
== newDrawFb
)
1913 bindDrawBuf
= GL_FALSE
;
1914 if (oldReadFb
== newReadFb
)
1915 bindReadBuf
= GL_FALSE
;
1918 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1920 * We also check if we're beginning and/or ending render-to-texture.
1921 * When a framebuffer with texture attachments is unbound, call
1922 * ctx->Driver.FinishRenderTexture().
1923 * When a framebuffer with texture attachments is bound, call
1924 * ctx->Driver.RenderTexture().
1926 * Note that if the ReadBuffer has texture attachments we don't consider
1927 * that a render-to-texture case.
1930 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1932 /* check if old readbuffer was render-to-texture */
1933 check_end_texture_render(ctx
, oldReadFb
);
1935 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1939 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1941 /* check if old framebuffer had any texture attachments */
1943 check_end_texture_render(ctx
, oldDrawFb
);
1945 /* check if newly bound framebuffer has any texture attachments */
1946 check_begin_texture_render(ctx
, newDrawFb
);
1948 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1951 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1952 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1958 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
1961 GET_CURRENT_CONTEXT(ctx
);
1963 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1965 for (i
= 0; i
< n
; i
++) {
1966 if (framebuffers
[i
] > 0) {
1967 struct gl_framebuffer
*fb
;
1968 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1970 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1972 /* check if deleting currently bound framebuffer object */
1973 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1974 /* separate draw/read binding points */
1975 if (fb
== ctx
->DrawBuffer
) {
1977 ASSERT(fb
->RefCount
>= 2);
1978 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1980 if (fb
== ctx
->ReadBuffer
) {
1982 ASSERT(fb
->RefCount
>= 2);
1983 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT
, 0);
1987 /* only one binding point for read/draw buffers */
1988 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1990 ASSERT(fb
->RefCount
>= 2);
1991 _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT
, 0);
1995 /* remove from hash table immediately, to free the ID */
1996 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1998 if (fb
!= &DummyFramebuffer
) {
1999 /* But the object will not be freed until it's no longer
2000 * bound in any context.
2002 _mesa_reference_framebuffer(&fb
, NULL
);
2011 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2013 GET_CURRENT_CONTEXT(ctx
);
2018 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2025 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2027 for (i
= 0; i
< n
; i
++) {
2028 GLuint name
= first
+ i
;
2029 framebuffers
[i
] = name
;
2030 /* insert dummy placeholder into hash table */
2031 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
2032 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2033 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
2040 _mesa_CheckFramebufferStatus(GLenum target
)
2042 struct gl_framebuffer
*buffer
;
2043 GET_CURRENT_CONTEXT(ctx
);
2045 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2047 if (MESA_VERBOSE
& VERBOSE_API
)
2048 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2049 _mesa_lookup_enum_by_nr(target
));
2051 buffer
= get_framebuffer_target(ctx
, target
);
2053 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2057 if (_mesa_is_winsys_fbo(buffer
)) {
2058 /* The window system / default framebuffer is always complete */
2059 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2062 /* No need to flush here */
2064 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2065 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2068 return buffer
->_Status
;
2073 * Replicate the src attachment point. Used by framebuffer_texture() when
2074 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2075 * GL_STENCIL_ATTACHMENT.
2078 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2079 gl_buffer_index dst
,
2080 gl_buffer_index src
)
2082 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2083 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2085 assert(src_att
->Texture
!= NULL
);
2086 assert(src_att
->Renderbuffer
!= NULL
);
2088 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2089 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2090 dst_att
->Type
= src_att
->Type
;
2091 dst_att
->Complete
= src_att
->Complete
;
2092 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2093 dst_att
->Zoffset
= src_att
->Zoffset
;
2098 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2099 * glFramebufferTextureLayerEXT().
2100 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
2101 * get textarget=0 in that case.
2104 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2105 GLenum attachment
, GLenum textarget
, GLuint texture
,
2106 GLint level
, GLint zoffset
)
2108 struct gl_renderbuffer_attachment
*att
;
2109 struct gl_texture_object
*texObj
= NULL
;
2110 struct gl_framebuffer
*fb
;
2111 GLenum maxLevelsTarget
;
2113 fb
= get_framebuffer_target(ctx
, target
);
2115 _mesa_error(ctx
, GL_INVALID_ENUM
,
2116 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2120 /* check framebuffer binding */
2121 if (_mesa_is_winsys_fbo(fb
)) {
2122 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2123 "glFramebufferTexture%sEXT", caller
);
2127 /* The textarget, level, and zoffset parameters are only validated if
2128 * texture is non-zero.
2131 GLboolean err
= GL_TRUE
;
2133 texObj
= _mesa_lookup_texture(ctx
, texture
);
2134 if (texObj
!= NULL
) {
2135 if (textarget
== 0) {
2136 /* If textarget == 0 it means we're being called by
2137 * glFramebufferTextureLayer() and textarget is not used.
2138 * The only legal texture types for that function are 3D and
2139 * 1D/2D arrays textures.
2141 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2142 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2143 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2144 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2145 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2148 /* Make sure textarget is consistent with the texture's type */
2149 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2150 ? !_mesa_is_cube_face(textarget
)
2151 : (texObj
->Target
!= textarget
);
2155 /* can't render to a non-existant texture */
2156 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2157 "glFramebufferTexture%sEXT(non existant texture)",
2163 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2164 "glFramebufferTexture%sEXT(texture target mismatch)",
2169 if (texObj
->Target
== GL_TEXTURE_3D
) {
2170 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2171 if (zoffset
< 0 || zoffset
>= maxSize
) {
2172 _mesa_error(ctx
, GL_INVALID_VALUE
,
2173 "glFramebufferTexture%sEXT(zoffset)", caller
);
2177 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2178 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2179 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2180 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2182 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2183 _mesa_error(ctx
, GL_INVALID_VALUE
,
2184 "glFramebufferTexture%sEXT(layer)", caller
);
2189 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2191 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2192 _mesa_error(ctx
, GL_INVALID_VALUE
,
2193 "glFramebufferTexture%sEXT(level)", caller
);
2198 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2200 _mesa_error(ctx
, GL_INVALID_ENUM
,
2201 "glFramebufferTexture%sEXT(attachment)", caller
);
2205 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2207 _glthread_LOCK_MUTEX(fb
->Mutex
);
2209 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2210 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2211 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2212 _mesa_tex_target_to_face(textarget
) ==
2213 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2214 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2215 /* The texture object is already attached to the stencil attachment
2216 * point. Don't create a new renderbuffer; just reuse the stencil
2217 * attachment's. This is required to prevent a GL error in
2218 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2220 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2222 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2223 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2224 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2225 _mesa_tex_target_to_face(textarget
) ==
2226 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2227 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2228 /* As above, but with depth and stencil transposed. */
2229 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2232 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2234 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2235 /* Above we created a new renderbuffer and attached it to the
2236 * depth attachment point. Now attach it to the stencil attachment
2239 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2240 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2245 /* Set the render-to-texture flag. We'll check this flag in
2246 * glTexImage() and friends to determine if we need to revalidate
2247 * any FBOs that might be rendering into this texture.
2248 * This flag never gets cleared since it's non-trivial to determine
2249 * when all FBOs might be done rendering to this texture. That's OK
2250 * though since it's uncommon to render to a texture then repeatedly
2251 * call glTexImage() to change images in the texture.
2253 texObj
->_RenderToTexture
= GL_TRUE
;
2256 _mesa_remove_attachment(ctx
, att
);
2257 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2258 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2259 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2263 invalidate_framebuffer(fb
);
2265 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2271 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2272 GLenum textarget
, GLuint texture
, GLint level
)
2274 GET_CURRENT_CONTEXT(ctx
);
2279 switch (textarget
) {
2283 case GL_TEXTURE_1D_ARRAY
:
2284 error
= !ctx
->Extensions
.EXT_texture_array
;
2291 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2292 "glFramebufferTexture1DEXT(textarget=%s)",
2293 _mesa_lookup_enum_by_nr(textarget
));
2298 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2304 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2305 GLenum textarget
, GLuint texture
, GLint level
)
2307 GET_CURRENT_CONTEXT(ctx
);
2312 switch (textarget
) {
2316 case GL_TEXTURE_RECTANGLE
:
2317 error
= _mesa_is_gles(ctx
)
2318 || !ctx
->Extensions
.NV_texture_rectangle
;
2320 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2321 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2322 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2323 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2324 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2325 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2326 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2328 case GL_TEXTURE_2D_ARRAY
:
2329 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2330 || !ctx
->Extensions
.EXT_texture_array
;
2332 case GL_TEXTURE_2D_MULTISAMPLE
:
2333 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2334 error
= _mesa_is_gles(ctx
)
2335 || !ctx
->Extensions
.ARB_texture_multisample
;
2342 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2343 "glFramebufferTexture2DEXT(textarget=%s)",
2344 _mesa_lookup_enum_by_nr(textarget
));
2349 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2355 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2356 GLenum textarget
, GLuint texture
,
2357 GLint level
, GLint zoffset
)
2359 GET_CURRENT_CONTEXT(ctx
);
2361 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2362 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2363 "glFramebufferTexture3DEXT(textarget)");
2367 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2373 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2374 GLuint texture
, GLint level
, GLint layer
)
2376 GET_CURRENT_CONTEXT(ctx
);
2378 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2384 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2385 GLenum renderbufferTarget
,
2386 GLuint renderbuffer
)
2388 struct gl_renderbuffer_attachment
*att
;
2389 struct gl_framebuffer
*fb
;
2390 struct gl_renderbuffer
*rb
;
2391 GET_CURRENT_CONTEXT(ctx
);
2393 fb
= get_framebuffer_target(ctx
, target
);
2395 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2399 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2400 _mesa_error(ctx
, GL_INVALID_ENUM
,
2401 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2405 if (_mesa_is_winsys_fbo(fb
)) {
2406 /* Can't attach new renderbuffers to a window system framebuffer */
2407 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2411 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2413 _mesa_error(ctx
, GL_INVALID_ENUM
,
2414 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2415 _mesa_lookup_enum_by_nr(attachment
));
2420 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2422 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2423 "glFramebufferRenderbufferEXT(non-existant"
2424 " renderbuffer %u)", renderbuffer
);
2427 else if (rb
== &DummyRenderbuffer
) {
2428 /* This is what NVIDIA does */
2429 _mesa_error(ctx
, GL_INVALID_VALUE
,
2430 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2436 /* remove renderbuffer attachment */
2440 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2441 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2442 /* make sure the renderbuffer is a depth/stencil format */
2443 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2444 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2445 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2446 "glFramebufferRenderbufferEXT(renderbuffer"
2447 " is not DEPTH_STENCIL format)");
2453 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2455 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2456 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2458 /* Some subsequent GL commands may depend on the framebuffer's visual
2459 * after the binding is updated. Update visual info now.
2461 _mesa_update_framebuffer_visual(ctx
, fb
);
2466 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2467 GLenum pname
, GLint
*params
)
2469 const struct gl_renderbuffer_attachment
*att
;
2470 struct gl_framebuffer
*buffer
;
2472 GET_CURRENT_CONTEXT(ctx
);
2474 /* The error differs in GL and GLES. */
2475 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2477 buffer
= get_framebuffer_target(ctx
, target
);
2479 _mesa_error(ctx
, GL_INVALID_ENUM
,
2480 "glGetFramebufferAttachmentParameterivEXT(target)");
2484 if (_mesa_is_winsys_fbo(buffer
)) {
2485 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2488 * "If the framebuffer currently bound to target is zero, then
2489 * INVALID_OPERATION is generated."
2491 * The EXT_framebuffer_object spec has the same wording, and the
2492 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2495 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2496 && !_mesa_is_gles3(ctx
)) {
2497 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2498 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2502 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2503 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2504 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2505 "glGetFramebufferAttachmentParameteriv(attachment)");
2508 /* the default / window-system FBO */
2509 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2512 /* user-created framebuffer FBO */
2513 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2517 _mesa_error(ctx
, GL_INVALID_ENUM
,
2518 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2522 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2523 /* the depth and stencil attachments must point to the same buffer */
2524 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2525 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2526 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2527 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2528 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2529 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2530 " attachments differ)");
2535 /* No need to flush here */
2538 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2539 *params
= _mesa_is_winsys_fbo(buffer
)
2540 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2542 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2543 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2544 *params
= att
->Renderbuffer
->Name
;
2546 else if (att
->Type
== GL_TEXTURE
) {
2547 *params
= att
->Texture
->Name
;
2550 assert(att
->Type
== GL_NONE
);
2551 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2554 goto invalid_pname_enum
;
2558 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2559 if (att
->Type
== GL_TEXTURE
) {
2560 *params
= att
->TextureLevel
;
2562 else if (att
->Type
== GL_NONE
) {
2563 _mesa_error(ctx
, err
,
2564 "glGetFramebufferAttachmentParameterivEXT(pname)");
2567 goto invalid_pname_enum
;
2570 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2571 if (att
->Type
== GL_TEXTURE
) {
2572 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2573 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2579 else if (att
->Type
== GL_NONE
) {
2580 _mesa_error(ctx
, err
,
2581 "glGetFramebufferAttachmentParameterivEXT(pname)");
2584 goto invalid_pname_enum
;
2587 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2588 if (ctx
->API
== API_OPENGLES
) {
2589 goto invalid_pname_enum
;
2590 } else if (att
->Type
== GL_NONE
) {
2591 _mesa_error(ctx
, err
,
2592 "glGetFramebufferAttachmentParameterivEXT(pname)");
2593 } else if (att
->Type
== GL_TEXTURE
) {
2594 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2595 *params
= att
->Zoffset
;
2602 goto invalid_pname_enum
;
2605 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2606 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2607 && !_mesa_is_gles3(ctx
)) {
2608 goto invalid_pname_enum
;
2610 else if (att
->Type
== GL_NONE
) {
2611 _mesa_error(ctx
, err
,
2612 "glGetFramebufferAttachmentParameterivEXT(pname)");
2615 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2616 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2619 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2620 * if the sRGB conversion is unsupported. */
2621 *params
= GL_LINEAR
;
2625 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2626 if ((ctx
->API
!= API_OPENGL_COMPAT
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2627 && ctx
->API
!= API_OPENGL_CORE
2628 && !_mesa_is_gles3(ctx
)) {
2629 goto invalid_pname_enum
;
2631 else if (att
->Type
== GL_NONE
) {
2632 _mesa_error(ctx
, err
,
2633 "glGetFramebufferAttachmentParameterivEXT(pname)");
2636 gl_format format
= att
->Renderbuffer
->Format
;
2638 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2641 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2642 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2643 * generate an INVALID_OPERATION error.
2645 if (_mesa_is_gles3(ctx
) && attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2646 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2647 "glGetFramebufferAttachmentParameteriv(cannot query "
2648 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2649 "GL_DEPTH_STENCIL_ATTACHMENT");
2653 if (format
== MESA_FORMAT_S8
) {
2657 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2658 /* depends on the attachment parameter */
2659 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2667 *params
= _mesa_get_format_datatype(format
);
2671 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2672 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2673 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2674 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2675 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2676 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2677 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2678 && !_mesa_is_gles3(ctx
)) {
2679 goto invalid_pname_enum
;
2681 else if (att
->Type
== GL_NONE
) {
2682 _mesa_error(ctx
, err
,
2683 "glGetFramebufferAttachmentParameterivEXT(pname)");
2685 else if (att
->Texture
) {
2686 const struct gl_texture_image
*texImage
=
2687 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2690 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2691 texImage
->TexFormat
);
2697 else if (att
->Renderbuffer
) {
2698 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2699 att
->Renderbuffer
->Format
);
2702 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2703 " invalid FBO attachment structure");
2707 goto invalid_pname_enum
;
2713 _mesa_error(ctx
, GL_INVALID_ENUM
,
2714 "glGetFramebufferAttachmentParameteriv(pname)");
2720 _mesa_GenerateMipmap(GLenum target
)
2722 struct gl_texture_image
*srcImage
;
2723 struct gl_texture_object
*texObj
;
2726 GET_CURRENT_CONTEXT(ctx
);
2728 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2732 error
= _mesa_is_gles(ctx
);
2738 error
= ctx
->API
== API_OPENGLES
;
2740 case GL_TEXTURE_CUBE_MAP
:
2741 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2743 case GL_TEXTURE_1D_ARRAY
:
2744 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2746 case GL_TEXTURE_2D_ARRAY
:
2747 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2748 || !ctx
->Extensions
.EXT_texture_array
;
2755 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2756 _mesa_lookup_enum_by_nr(target
));
2760 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2762 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2767 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2768 !_mesa_cube_complete(texObj
)) {
2769 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2770 "glGenerateMipmap(incomplete cube map)");
2774 _mesa_lock_texture(ctx
, texObj
);
2776 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2778 _mesa_unlock_texture(ctx
, texObj
);
2779 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2780 "glGenerateMipmap(zero size base image)");
2784 if (_mesa_is_enum_format_integer(srcImage
->InternalFormat
) ||
2785 _mesa_is_depthstencil_format(srcImage
->InternalFormat
) ||
2786 _mesa_is_stencil_format(srcImage
->InternalFormat
)) {
2787 _mesa_unlock_texture(ctx
, texObj
);
2788 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2789 "glGenerateMipmap(invalid internal format)");
2793 if (target
== GL_TEXTURE_CUBE_MAP
) {
2795 for (face
= 0; face
< 6; face
++)
2796 ctx
->Driver
.GenerateMipmap(ctx
,
2797 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2801 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2803 _mesa_unlock_texture(ctx
, texObj
);
2807 static const struct gl_renderbuffer_attachment
*
2808 find_attachment(const struct gl_framebuffer
*fb
,
2809 const struct gl_renderbuffer
*rb
)
2812 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2813 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2814 return &fb
->Attachment
[i
];
2821 * Helper function for checking if the datatypes of color buffers are
2822 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2824 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2825 * and any of the following conditions hold:
2826 * - The read buffer contains fixed-point or floating-point values and any
2827 * draw buffer contains neither fixed-point nor floating-point values.
2828 * - The read buffer contains unsigned integer values and any draw buffer
2829 * does not contain unsigned integer values.
2830 * - The read buffer contains signed integer values and any draw buffer
2831 * does not contain signed integer values."
2834 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2836 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2837 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2839 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2840 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2841 srcType
== GL_SIGNED_NORMALIZED
||
2842 srcType
== GL_FLOAT
);
2843 /* Boil any of those types down to GL_FLOAT */
2847 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2848 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2849 dstType
== GL_SIGNED_NORMALIZED
||
2850 dstType
== GL_FLOAT
);
2851 /* Boil any of those types down to GL_FLOAT */
2855 return srcType
== dstType
;
2860 compatible_resolve_formats(const struct gl_renderbuffer
*readRb
,
2861 const struct gl_renderbuffer
*drawRb
)
2863 GLenum readFormat
, drawFormat
;
2865 /* The simple case where we know the backing Mesa formats are the same.
2867 if (_mesa_get_srgb_format_linear(readRb
->Format
) ==
2868 _mesa_get_srgb_format_linear(drawRb
->Format
)) {
2872 /* The Mesa formats are different, so we must check whether the internal
2873 * formats are compatible.
2875 * Under some circumstances, the user may request e.g. two GL_RGBA8
2876 * textures and get two entirely different Mesa formats like RGBA8888 and
2877 * ARGB8888. Drivers behaving like that should be able to cope with
2878 * non-matching formats by themselves, because it's not the user's fault.
2880 * Blits between linear and sRGB formats are also allowed.
2882 readFormat
= _mesa_get_nongeneric_internalformat(readRb
->InternalFormat
);
2883 drawFormat
= _mesa_get_nongeneric_internalformat(drawRb
->InternalFormat
);
2884 readFormat
= _mesa_get_linear_internalformat(readFormat
);
2885 drawFormat
= _mesa_get_linear_internalformat(drawFormat
);
2887 if (readFormat
== drawFormat
) {
2896 * Blit rectangular region, optionally from one framebuffer to another.
2898 * Note, if the src buffer is multisampled and the dest is not, this is
2899 * when the samples must be resolved to a single color.
2902 _mesa_BlitFramebuffer(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2903 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2904 GLbitfield mask
, GLenum filter
)
2906 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2907 GL_DEPTH_BUFFER_BIT
|
2908 GL_STENCIL_BUFFER_BIT
);
2909 const struct gl_framebuffer
*readFb
, *drawFb
;
2910 GET_CURRENT_CONTEXT(ctx
);
2912 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2914 if (MESA_VERBOSE
& VERBOSE_API
)
2916 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2917 srcX0
, srcY0
, srcX1
, srcY1
,
2918 dstX0
, dstY0
, dstX1
, dstY1
,
2919 mask
, _mesa_lookup_enum_by_nr(filter
));
2921 if (ctx
->NewState
) {
2922 _mesa_update_state(ctx
);
2925 readFb
= ctx
->ReadBuffer
;
2926 drawFb
= ctx
->DrawBuffer
;
2928 if (!readFb
|| !drawFb
) {
2929 /* This will normally never happen but someday we may want to
2930 * support MakeCurrent() with no drawables.
2935 /* check for complete framebuffers */
2936 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2937 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2938 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2939 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2943 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2944 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2948 if (mask
& ~legalMaskBits
) {
2949 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2953 /* depth/stencil must be blitted with nearest filtering */
2954 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2955 && filter
!= GL_NEAREST
) {
2956 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2957 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2961 /* get color read/draw renderbuffers */
2962 if (mask
& GL_COLOR_BUFFER_BIT
) {
2963 const GLuint numColorDrawBuffers
= ctx
->DrawBuffer
->_NumColorDrawBuffers
;
2964 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
2965 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
2968 /* From the EXT_framebuffer_object spec:
2970 * "If a buffer is specified in <mask> and does not exist in both
2971 * the read and draw framebuffers, the corresponding bit is silently
2974 if (!colorReadRb
|| numColorDrawBuffers
== 0) {
2975 mask
&= ~GL_COLOR_BUFFER_BIT
;
2978 for (i
= 0; i
< numColorDrawBuffers
; i
++) {
2979 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
2983 /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
2984 * ES 3.0.1 spec says:
2986 * "If the source and destination buffers are identical, an
2987 * INVALID_OPERATION error is generated. Different mipmap
2988 * levels of a texture, different layers of a three-
2989 * dimensional texture or two-dimensional array texture, and
2990 * different faces of a cube map texture do not constitute
2991 * identical buffers."
2993 if (_mesa_is_gles3(ctx
) && (colorDrawRb
== colorReadRb
)) {
2994 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2995 "glBlitFramebuffer(source and destination color "
2996 "buffer cannot be the same)");
3000 if (!compatible_color_datatypes(colorReadRb
->Format
,
3001 colorDrawRb
->Format
)) {
3002 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3003 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
3006 /* extra checks for multisample copies... */
3007 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3008 /* color formats must match */
3009 if (!compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
3010 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3011 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
3016 if (filter
== GL_LINEAR
) {
3017 /* 3.1 spec, page 199:
3018 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3019 * if filter is LINEAR and read buffer contains integer data."
3021 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3022 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3023 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3024 "glBlitFramebufferEXT(integer color type)");
3031 if (mask
& GL_STENCIL_BUFFER_BIT
) {
3032 struct gl_renderbuffer
*readRb
=
3033 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3034 struct gl_renderbuffer
*drawRb
=
3035 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3037 /* From the EXT_framebuffer_object spec:
3039 * "If a buffer is specified in <mask> and does not exist in both
3040 * the read and draw framebuffers, the corresponding bit is silently
3043 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3044 mask
&= ~GL_STENCIL_BUFFER_BIT
;
3047 int read_z_bits
, draw_z_bits
;
3049 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3050 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3051 "glBlitFramebuffer(source and destination stencil "
3052 "buffer cannot be the same)");
3056 if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
3057 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
3058 /* There is no need to check the stencil datatype here, because
3059 * there is only one: GL_UNSIGNED_INT.
3061 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3062 "glBlitFramebuffer(stencil attachment format mismatch)");
3066 read_z_bits
= _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
);
3067 draw_z_bits
= _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
);
3069 /* If both buffers also have depth data, the depth formats must match
3070 * as well. If one doesn't have depth, it's not blitted, so we should
3071 * ignore the depth format check.
3073 if (read_z_bits
> 0 && draw_z_bits
> 0 &&
3074 (read_z_bits
!= draw_z_bits
||
3075 _mesa_get_format_datatype(readRb
->Format
) !=
3076 _mesa_get_format_datatype(drawRb
->Format
))) {
3078 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3079 "(stencil attachment depth format mismatch)");
3085 if (mask
& GL_DEPTH_BUFFER_BIT
) {
3086 struct gl_renderbuffer
*readRb
=
3087 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3088 struct gl_renderbuffer
*drawRb
=
3089 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3091 /* From the EXT_framebuffer_object spec:
3093 * "If a buffer is specified in <mask> and does not exist in both
3094 * the read and draw framebuffers, the corresponding bit is silently
3097 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3098 mask
&= ~GL_DEPTH_BUFFER_BIT
;
3101 int read_s_bit
, draw_s_bit
;
3103 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3104 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3105 "glBlitFramebuffer(source and destination depth "
3106 "buffer cannot be the same)");
3110 if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
3111 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
3112 (_mesa_get_format_datatype(readRb
->Format
) !=
3113 _mesa_get_format_datatype(drawRb
->Format
))) {
3114 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3115 "glBlitFramebuffer(depth attachment format mismatch)");
3119 read_s_bit
= _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
);
3120 draw_s_bit
= _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
);
3122 /* If both buffers also have stencil data, the stencil formats must
3123 * match as well. If one doesn't have stencil, it's not blitted, so
3124 * we should ignore the stencil format check.
3126 if (read_s_bit
> 0 && draw_s_bit
> 0 && read_s_bit
!= draw_s_bit
) {
3127 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3128 "(depth attachment stencil bits mismatch)");
3135 if (_mesa_is_gles3(ctx
)) {
3136 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3139 * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
3140 * an INVALID_OPERATION error is generated."
3142 if (drawFb
->Visual
.samples
> 0) {
3143 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3144 "glBlitFramebuffer(destination samples must be 0)");
3148 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3151 * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
3152 * no copy is performed and an INVALID_OPERATION error is generated
3153 * if the formats of the read and draw framebuffers are not
3154 * identical or if the source and destination rectangles are not
3155 * defined with the same (X0, Y0) and (X1, Y1) bounds."
3157 * The format check was made above because desktop OpenGL has the same
3160 if (readFb
->Visual
.samples
> 0
3161 && (srcX0
!= dstX0
|| srcY0
!= dstY0
3162 || srcX1
!= dstX1
|| srcY1
!= dstY1
)) {
3163 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3164 "glBlitFramebuffer(bad src/dst multisample region)");
3168 if (readFb
->Visual
.samples
> 0 &&
3169 drawFb
->Visual
.samples
> 0 &&
3170 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
3171 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3172 "glBlitFramebufferEXT(mismatched samples)");
3176 /* extra checks for multisample copies... */
3177 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3178 /* src and dest region sizes must be the same */
3179 if (abs(srcX1
- srcX0
) != abs(dstX1
- dstX0
) ||
3180 abs(srcY1
- srcY0
) != abs(dstY1
- dstY0
)) {
3181 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3182 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
3188 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3189 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3195 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3196 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3199 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3201 srcX0
, srcY0
, srcX1
, srcY1
,
3202 dstX0
, dstY0
, dstX1
, dstY1
,
3205 const struct gl_renderbuffer_attachment
*att
;
3207 att
= find_attachment(readFb
, colorReadRb
);
3208 printf(" Src FBO %u RB %u (%dx%d) ",
3209 readFb
->Name
, colorReadRb
->Name
,
3210 colorReadRb
->Width
, colorReadRb
->Height
);
3211 if (att
&& att
->Texture
) {
3212 printf("Tex %u tgt 0x%x level %u face %u",
3214 att
->Texture
->Target
,
3220 /* Print all active color render buffers */
3221 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
3222 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3226 att
= find_attachment(drawFb
, colorDrawRb
);
3227 printf(" Dst FBO %u RB %u (%dx%d) ",
3228 drawFb
->Name
, colorDrawRb
->Name
,
3229 colorDrawRb
->Width
, colorDrawRb
->Height
);
3230 if (att
&& att
->Texture
) {
3231 printf("Tex %u tgt 0x%x level %u face %u",
3233 att
->Texture
->Target
,
3243 (srcX1
- srcX0
) == 0 || (srcY1
- srcY0
) == 0 ||
3244 (dstX1
- dstX0
) == 0 || (dstY1
- dstY0
) == 0) {
3248 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3249 ctx
->Driver
.BlitFramebuffer(ctx
,
3250 srcX0
, srcY0
, srcX1
, srcY1
,
3251 dstX0
, dstY0
, dstX1
, dstY1
,
3257 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3258 const GLenum
*attachments
, GLint x
, GLint y
,
3259 GLsizei width
, GLsizei height
, const char *name
)
3262 struct gl_framebuffer
*fb
;
3263 GET_CURRENT_CONTEXT(ctx
);
3265 fb
= get_framebuffer_target(ctx
, target
);
3267 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3271 if (numAttachments
< 0) {
3272 _mesa_error(ctx
, GL_INVALID_VALUE
,
3273 "%s(numAttachments < 0)", name
);
3277 /* The GL_ARB_invalidate_subdata spec says:
3279 * "If an attachment is specified that does not exist in the
3280 * framebuffer bound to <target>, it is ignored."
3284 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3285 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3286 * INVALID_OPERATION is generated."
3288 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3289 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3290 * set of retrictions).
3292 for (i
= 0; i
< numAttachments
; i
++) {
3293 if (_mesa_is_winsys_fbo(fb
)) {
3294 switch (attachments
[i
]) {
3300 /* Accumulation buffers and auxilary buffers were removed in
3301 * OpenGL 3.1, and they never existed in OpenGL ES.
3303 if (ctx
->API
!= API_OPENGL_COMPAT
)
3313 case GL_FRONT_RIGHT
:
3314 if (!_mesa_is_desktop_gl(ctx
))
3321 switch (attachments
[i
]) {
3322 case GL_DEPTH_ATTACHMENT
:
3323 case GL_STENCIL_ATTACHMENT
:
3325 case GL_COLOR_ATTACHMENT0
:
3326 case GL_COLOR_ATTACHMENT1
:
3327 case GL_COLOR_ATTACHMENT2
:
3328 case GL_COLOR_ATTACHMENT3
:
3329 case GL_COLOR_ATTACHMENT4
:
3330 case GL_COLOR_ATTACHMENT5
:
3331 case GL_COLOR_ATTACHMENT6
:
3332 case GL_COLOR_ATTACHMENT7
:
3333 case GL_COLOR_ATTACHMENT8
:
3334 case GL_COLOR_ATTACHMENT9
:
3335 case GL_COLOR_ATTACHMENT10
:
3336 case GL_COLOR_ATTACHMENT11
:
3337 case GL_COLOR_ATTACHMENT12
:
3338 case GL_COLOR_ATTACHMENT13
:
3339 case GL_COLOR_ATTACHMENT14
:
3340 case GL_COLOR_ATTACHMENT15
: {
3341 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3342 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3343 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3344 "%s(attachment >= max. color attachments)", name
);
3354 /* We don't actually do anything for this yet. Just return after
3355 * validating the parameters and generating the required errors.
3360 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3365 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3366 const GLenum
*attachments
, GLint x
, GLint y
,
3367 GLsizei width
, GLsizei height
)
3369 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3370 x
, y
, width
, height
,
3371 "glInvalidateSubFramebuffer");
3375 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3376 const GLenum
*attachments
)
3378 /* The GL_ARB_invalidate_subdata spec says:
3382 * void InvalidateFramebuffer(enum target,
3383 * sizei numAttachments,
3384 * const enum *attachments);
3386 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3387 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3388 * <MAX_VIEWPORT_DIMS[1]> respectively."
3390 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3391 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3392 "glInvalidateFramebuffer");
3396 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3397 const GLenum
*attachments
)
3399 struct gl_framebuffer
*fb
;
3402 GET_CURRENT_CONTEXT(ctx
);
3404 fb
= get_framebuffer_target(ctx
, target
);
3406 _mesa_error(ctx
, GL_INVALID_ENUM
,
3407 "glDiscardFramebufferEXT(target %s)",
3408 _mesa_lookup_enum_by_nr(target
));
3412 if (numAttachments
< 0) {
3413 _mesa_error(ctx
, GL_INVALID_VALUE
,
3414 "glDiscardFramebufferEXT(numAttachments < 0)");
3418 for (i
= 0; i
< numAttachments
; i
++) {
3419 switch (attachments
[i
]) {
3423 if (_mesa_is_user_fbo(fb
))
3426 case GL_COLOR_ATTACHMENT0
:
3427 case GL_DEPTH_ATTACHMENT
:
3428 case GL_STENCIL_ATTACHMENT
:
3429 if (_mesa_is_winsys_fbo(fb
))
3437 if (ctx
->Driver
.DiscardFramebuffer
)
3438 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3443 _mesa_error(ctx
, GL_INVALID_ENUM
,
3444 "glDiscardFramebufferEXT(attachment %s)",
3445 _mesa_lookup_enum_by_nr(attachments
[i
]));