2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * GL_EXT/ARB_framebuffer_object extensions
41 #include "framebuffer.h"
42 #include "glformats.h"
45 #include "multisample.h"
47 #include "renderbuffer.h"
53 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
60 * None of the GL_EXT_framebuffer_object functions are compiled into
67 * When glGenRender/FramebuffersEXT() is called we insert pointers to
68 * these placeholder objects into the hash table.
69 * Later, when the object ID is first bound, we replace the placeholder
70 * with the real frame/renderbuffer.
72 static struct gl_framebuffer DummyFramebuffer
;
73 static struct gl_renderbuffer DummyRenderbuffer
;
75 /* We bind this framebuffer when applications pass a NULL
76 * drawable/surface in make current. */
77 static struct gl_framebuffer IncompleteFramebuffer
;
81 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
87 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
94 _mesa_init_fbobjects(struct gl_context
*ctx
)
96 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
97 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
98 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
99 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
101 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
104 struct gl_framebuffer
*
105 _mesa_get_incomplete_framebuffer(void)
107 return &IncompleteFramebuffer
;
111 * Helper routine for getting a gl_renderbuffer.
113 struct gl_renderbuffer
*
114 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
116 struct gl_renderbuffer
*rb
;
121 rb
= (struct gl_renderbuffer
*)
122 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
128 * Helper routine for getting a gl_framebuffer.
130 struct gl_framebuffer
*
131 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
133 struct gl_framebuffer
*fb
;
138 fb
= (struct gl_framebuffer
*)
139 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
145 * Mark the given framebuffer as invalid. This will force the
146 * test for framebuffer completeness to be done before the framebuffer
150 invalidate_framebuffer(struct gl_framebuffer
*fb
)
152 fb
->_Status
= 0; /* "indeterminate" */
157 * Return the gl_framebuffer object which corresponds to the given
158 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
159 * Check support for GL_EXT_framebuffer_blit to determine if certain
161 * \return gl_framebuffer pointer or NULL if target is illegal
163 static struct gl_framebuffer
*
164 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
166 bool have_fb_blit
= _mesa_is_gles3(ctx
) ||
167 (ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
));
169 case GL_DRAW_FRAMEBUFFER
:
170 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
171 case GL_READ_FRAMEBUFFER
:
172 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
173 case GL_FRAMEBUFFER_EXT
:
174 return ctx
->DrawBuffer
;
182 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
183 * gl_renderbuffer_attachment object.
184 * This function is only used for user-created FB objects, not the
185 * default / window-system FB object.
186 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
187 * the depth buffer attachment point.
189 struct gl_renderbuffer_attachment
*
190 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
195 assert(_mesa_is_user_fbo(fb
));
197 switch (attachment
) {
198 case GL_COLOR_ATTACHMENT0_EXT
:
199 case GL_COLOR_ATTACHMENT1_EXT
:
200 case GL_COLOR_ATTACHMENT2_EXT
:
201 case GL_COLOR_ATTACHMENT3_EXT
:
202 case GL_COLOR_ATTACHMENT4_EXT
:
203 case GL_COLOR_ATTACHMENT5_EXT
:
204 case GL_COLOR_ATTACHMENT6_EXT
:
205 case GL_COLOR_ATTACHMENT7_EXT
:
206 case GL_COLOR_ATTACHMENT8_EXT
:
207 case GL_COLOR_ATTACHMENT9_EXT
:
208 case GL_COLOR_ATTACHMENT10_EXT
:
209 case GL_COLOR_ATTACHMENT11_EXT
:
210 case GL_COLOR_ATTACHMENT12_EXT
:
211 case GL_COLOR_ATTACHMENT13_EXT
:
212 case GL_COLOR_ATTACHMENT14_EXT
:
213 case GL_COLOR_ATTACHMENT15_EXT
:
214 /* Only OpenGL ES 1.x forbids color attachments other than
215 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
218 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
219 if (i
>= ctx
->Const
.MaxColorAttachments
220 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
223 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
224 case GL_DEPTH_STENCIL_ATTACHMENT
:
225 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
228 case GL_DEPTH_ATTACHMENT_EXT
:
229 return &fb
->Attachment
[BUFFER_DEPTH
];
230 case GL_STENCIL_ATTACHMENT_EXT
:
231 return &fb
->Attachment
[BUFFER_STENCIL
];
239 * As above, but only used for getting attachments of the default /
240 * window-system framebuffer (not user-created framebuffer objects).
242 static struct gl_renderbuffer_attachment
*
243 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
246 assert(_mesa_is_winsys_fbo(fb
));
248 if (_mesa_is_gles3(ctx
)) {
249 assert(attachment
== GL_BACK
||
250 attachment
== GL_DEPTH
||
251 attachment
== GL_STENCIL
);
252 switch (attachment
) {
254 /* Since there is no stereo rendering in ES 3.0, only return the
257 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
258 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
259 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
261 return &fb
->Attachment
[BUFFER_DEPTH
];
263 return &fb
->Attachment
[BUFFER_STENCIL
];
267 switch (attachment
) {
269 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
271 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
273 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
275 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
277 if (fb
->Visual
.numAuxBuffers
== 1) {
278 return &fb
->Attachment
[BUFFER_AUX0
];
282 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
284 * "If the default framebuffer is bound to target, then attachment must
285 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
286 * identifying a color buffer; DEPTH, identifying the depth buffer; or
287 * STENCIL, identifying the stencil buffer."
289 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
290 * language. However, revision #33 of the ARB_framebuffer_object spec
293 * "If the default framebuffer is bound to <target>, then <attachment>
294 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
295 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
296 * depth buffer, or the stencil buffer, and <pname> may be
297 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
298 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
300 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
301 * from glext.h, so shipping apps should not use those values.
303 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
304 * support queries of the window system FBO.
307 return &fb
->Attachment
[BUFFER_DEPTH
];
309 return &fb
->Attachment
[BUFFER_STENCIL
];
318 * Remove any texture or renderbuffer attached to the given attachment
319 * point. Update reference counts, etc.
322 _mesa_remove_attachment(struct gl_context
*ctx
,
323 struct gl_renderbuffer_attachment
*att
)
325 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
327 /* tell driver that we're done rendering to this texture. */
328 if (rb
&& rb
->NeedsFinishRenderTexture
)
329 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
331 if (att
->Type
== GL_TEXTURE
) {
332 ASSERT(att
->Texture
);
333 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
334 ASSERT(!att
->Texture
);
336 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
337 ASSERT(!att
->Texture
);
338 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
339 ASSERT(!att
->Renderbuffer
);
342 att
->Complete
= GL_TRUE
;
346 * Create a renderbuffer which will be set up by the driver to wrap the
347 * texture image slice.
349 * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get
350 * to share most of their framebuffer rendering code between winsys,
351 * renderbuffer, and texture attachments.
353 * The allocated renderbuffer uses a non-zero Name so that drivers can check
354 * it for determining vertical orientation, but we use ~0 to make it fairly
355 * unambiguous with actual user (non-texture) renderbuffers.
358 _mesa_update_texture_renderbuffer(struct gl_context
*ctx
,
359 struct gl_framebuffer
*fb
,
360 struct gl_renderbuffer_attachment
*att
)
362 struct gl_texture_image
*texImage
;
363 struct gl_renderbuffer
*rb
;
365 texImage
= att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
369 rb
= att
->Renderbuffer
;
371 rb
= ctx
->Driver
.NewRenderbuffer(ctx
, ~0);
373 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
376 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
378 /* This can't get called on a texture renderbuffer, so set it to NULL
379 * for clarity compared to user renderbuffers.
381 rb
->AllocStorage
= NULL
;
383 rb
->NeedsFinishRenderTexture
= ctx
->Driver
.FinishRenderTexture
!= NULL
;
386 rb
->_BaseFormat
= texImage
->_BaseFormat
;
387 rb
->Format
= texImage
->TexFormat
;
388 rb
->InternalFormat
= texImage
->InternalFormat
;
389 rb
->Width
= texImage
->Width2
;
390 rb
->Height
= texImage
->Height2
;
391 rb
->NumSamples
= texImage
->NumSamples
;
392 rb
->TexImage
= texImage
;
394 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
398 * Bind a texture object to an attachment point.
399 * The previous binding, if any, will be removed first.
402 _mesa_set_texture_attachment(struct gl_context
*ctx
,
403 struct gl_framebuffer
*fb
,
404 struct gl_renderbuffer_attachment
*att
,
405 struct gl_texture_object
*texObj
,
406 GLenum texTarget
, GLuint level
, GLuint zoffset
,
409 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
411 if (rb
&& rb
->NeedsFinishRenderTexture
)
412 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
414 if (att
->Texture
== texObj
) {
415 /* re-attaching same texture */
416 ASSERT(att
->Type
== GL_TEXTURE
);
420 _mesa_remove_attachment(ctx
, att
);
421 att
->Type
= GL_TEXTURE
;
422 assert(!att
->Texture
);
423 _mesa_reference_texobj(&att
->Texture
, texObj
);
425 invalidate_framebuffer(fb
);
427 /* always update these fields */
428 att
->TextureLevel
= level
;
429 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
430 att
->Zoffset
= zoffset
;
431 att
->Layered
= layered
;
432 att
->Complete
= GL_FALSE
;
434 _mesa_update_texture_renderbuffer(ctx
, fb
, att
);
439 * Bind a renderbuffer to an attachment point.
440 * The previous binding, if any, will be removed first.
443 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
444 struct gl_renderbuffer_attachment
*att
,
445 struct gl_renderbuffer
*rb
)
447 /* XXX check if re-doing same attachment, exit early */
448 _mesa_remove_attachment(ctx
, att
);
449 att
->Type
= GL_RENDERBUFFER_EXT
;
450 att
->Texture
= NULL
; /* just to be safe */
451 att
->Complete
= GL_FALSE
;
452 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
457 * Fallback for ctx->Driver.FramebufferRenderbuffer()
458 * Attach a renderbuffer object to a framebuffer object.
461 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
462 struct gl_framebuffer
*fb
,
463 GLenum attachment
, struct gl_renderbuffer
*rb
)
465 struct gl_renderbuffer_attachment
*att
;
467 _glthread_LOCK_MUTEX(fb
->Mutex
);
469 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
472 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
473 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
474 /* do stencil attachment here (depth already done above) */
475 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
477 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
479 rb
->AttachedAnytime
= GL_TRUE
;
482 _mesa_remove_attachment(ctx
, att
);
485 invalidate_framebuffer(fb
);
487 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
492 * Fallback for ctx->Driver.ValidateFramebuffer()
493 * Check if the renderbuffer's formats are supported by the software
495 * Drivers should probably override this.
498 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
501 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
502 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
504 switch (rb
->_BaseFormat
) {
506 case GL_LUMINANCE_ALPHA
:
511 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
515 switch (rb
->Format
) {
516 /* XXX This list is likely incomplete. */
517 case MESA_FORMAT_RGB9_E5_FLOAT
:
518 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
521 /* render buffer format is supported by software rendering */
530 * Return true if the framebuffer has a combined depth/stencil
531 * renderbuffer attached.
534 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
536 const struct gl_renderbuffer_attachment
*depth
=
537 &fb
->Attachment
[BUFFER_DEPTH
];
538 const struct gl_renderbuffer_attachment
*stencil
=
539 &fb
->Attachment
[BUFFER_STENCIL
];
541 if (depth
->Type
== stencil
->Type
) {
542 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
543 depth
->Renderbuffer
== stencil
->Renderbuffer
)
546 if (depth
->Type
== GL_TEXTURE
&&
547 depth
->Texture
== stencil
->Texture
)
559 att_incomplete(const char *msg
)
561 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
562 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
571 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
573 static GLuint msg_id
;
575 _mesa_gl_debug(ctx
, &msg_id
,
576 MESA_DEBUG_TYPE_OTHER
,
577 MESA_DEBUG_SEVERITY_MEDIUM
,
578 "FBO incomplete: %s [%d]\n", msg
, index
);
580 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
581 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
587 * Is the given base format a legal format for a color renderbuffer?
590 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
592 switch (baseFormat
) {
597 case GL_LUMINANCE_ALPHA
:
600 return ctx
->API
== API_OPENGL_COMPAT
&&
601 ctx
->Extensions
.ARB_framebuffer_object
;
604 return ctx
->Extensions
.ARB_texture_rg
;
612 * Is the given base format a legal format for a color renderbuffer?
615 is_format_color_renderable(const struct gl_context
*ctx
, gl_format format
, GLenum internalFormat
)
617 const GLenum baseFormat
=
618 _mesa_get_format_base_format(format
);
621 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
622 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
626 /* Reject additional cases for GLES */
627 switch (internalFormat
) {
647 if (format
== MESA_FORMAT_ARGB2101010
&& internalFormat
!= GL_RGB10_A2
) {
656 * Is the given base format a legal format for a depth/stencil renderbuffer?
659 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
661 switch (baseFormat
) {
662 case GL_DEPTH_COMPONENT
:
663 case GL_DEPTH_STENCIL_EXT
:
672 * Test if an attachment point is complete and update its Complete field.
673 * \param format if GL_COLOR, this is a color attachment point,
674 * if GL_DEPTH, this is a depth component attachment point,
675 * if GL_STENCIL, this is a stencil component attachment point.
678 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
679 struct gl_renderbuffer_attachment
*att
)
681 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
683 /* assume complete */
684 att
->Complete
= GL_TRUE
;
686 /* Look for reasons why the attachment might be incomplete */
687 if (att
->Type
== GL_TEXTURE
) {
688 const struct gl_texture_object
*texObj
= att
->Texture
;
689 struct gl_texture_image
*texImage
;
693 att_incomplete("no texobj");
694 att
->Complete
= GL_FALSE
;
698 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
700 att_incomplete("no teximage");
701 att
->Complete
= GL_FALSE
;
704 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
705 att_incomplete("teximage width/height=0");
706 printf("texobj = %u\n", texObj
->Name
);
707 printf("level = %d\n", att
->TextureLevel
);
708 att
->Complete
= GL_FALSE
;
711 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
712 att_incomplete("bad z offset");
713 att
->Complete
= GL_FALSE
;
717 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
719 if (format
== GL_COLOR
) {
720 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
721 att_incomplete("bad format");
722 att
->Complete
= GL_FALSE
;
725 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
726 att_incomplete("compressed internalformat");
727 att
->Complete
= GL_FALSE
;
731 else if (format
== GL_DEPTH
) {
732 if (baseFormat
== GL_DEPTH_COMPONENT
) {
735 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
736 ctx
->Extensions
.ARB_depth_texture
&&
737 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
741 att
->Complete
= GL_FALSE
;
742 att_incomplete("bad depth format");
747 ASSERT(format
== GL_STENCIL
);
748 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
749 ctx
->Extensions
.ARB_depth_texture
&&
750 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
754 /* no such thing as stencil-only textures */
755 att_incomplete("illegal stencil texture");
756 att
->Complete
= GL_FALSE
;
761 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
762 const GLenum baseFormat
=
763 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
765 ASSERT(att
->Renderbuffer
);
766 if (!att
->Renderbuffer
->InternalFormat
||
767 att
->Renderbuffer
->Width
< 1 ||
768 att
->Renderbuffer
->Height
< 1) {
769 att_incomplete("0x0 renderbuffer");
770 att
->Complete
= GL_FALSE
;
773 if (format
== GL_COLOR
) {
774 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
775 att_incomplete("bad renderbuffer color format");
776 att
->Complete
= GL_FALSE
;
780 else if (format
== GL_DEPTH
) {
781 if (baseFormat
== GL_DEPTH_COMPONENT
) {
784 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
785 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
789 att_incomplete("bad renderbuffer depth format");
790 att
->Complete
= GL_FALSE
;
795 assert(format
== GL_STENCIL
);
796 if (baseFormat
== GL_STENCIL_INDEX
) {
799 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
800 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
804 att
->Complete
= GL_FALSE
;
805 att_incomplete("bad renderbuffer stencil format");
811 ASSERT(att
->Type
== GL_NONE
);
819 * Test if the given framebuffer object is complete and update its
820 * Status field with the results.
821 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
822 * driver to make hardware-specific validation/completeness checks.
823 * Also update the framebuffer's Width and Height fields if the
824 * framebuffer is complete.
827 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
828 struct gl_framebuffer
*fb
)
831 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
832 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
833 GLint numSamples
= -1;
834 GLint fixedSampleLocations
= -1;
837 bool layer_count_valid
= false;
838 GLuint layer_count
= 0, att_layer_count
;
840 assert(_mesa_is_user_fbo(fb
));
842 /* we're changing framebuffer fields here */
843 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
848 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
849 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
851 /* Start at -2 to more easily loop over all attachment points.
856 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
857 struct gl_renderbuffer_attachment
*att
;
862 * XXX for ARB_fbo, only check color buffers that are named by
863 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
866 /* check for attachment completeness
869 att
= &fb
->Attachment
[BUFFER_DEPTH
];
870 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
871 if (!att
->Complete
) {
872 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
873 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
878 att
= &fb
->Attachment
[BUFFER_STENCIL
];
879 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
880 if (!att
->Complete
) {
881 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
882 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
887 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
888 test_attachment_completeness(ctx
, GL_COLOR
, att
);
889 if (!att
->Complete
) {
890 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
891 fbo_incomplete(ctx
, "color attachment incomplete", i
);
896 /* get width, height, format of the renderbuffer/texture
898 if (att
->Type
== GL_TEXTURE
) {
899 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
900 minWidth
= MIN2(minWidth
, texImg
->Width
);
901 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
902 minHeight
= MIN2(minHeight
, texImg
->Height
);
903 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
904 f
= texImg
->_BaseFormat
;
905 attFormat
= texImg
->TexFormat
;
908 if (!is_format_color_renderable(ctx
, attFormat
, texImg
->InternalFormat
) &&
909 !is_legal_depth_format(ctx
, f
)) {
910 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
911 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
916 numSamples
= texImg
->NumSamples
;
917 else if (numSamples
!= texImg
->NumSamples
) {
918 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
919 fbo_incomplete(ctx
, "inconsistent sample count", -1);
923 if (fixedSampleLocations
< 0)
924 fixedSampleLocations
= texImg
->FixedSampleLocations
;
925 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
926 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
927 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
931 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
932 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
933 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
934 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
935 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
936 f
= att
->Renderbuffer
->InternalFormat
;
937 attFormat
= att
->Renderbuffer
->Format
;
941 numSamples
= att
->Renderbuffer
->NumSamples
;
942 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
943 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
944 fbo_incomplete(ctx
, "inconsistent sample count", -1);
948 /* RENDERBUFFER has fixedSampleLocations implicitly true */
949 if (fixedSampleLocations
< 0)
950 fixedSampleLocations
= GL_TRUE
;
951 else if (fixedSampleLocations
!= GL_TRUE
) {
952 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
953 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
958 assert(att
->Type
== GL_NONE
);
962 /* check if integer color */
963 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
965 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
967 GLenum type
= _mesa_get_format_datatype(attFormat
);
969 fb
->_AllColorBuffersFixedPoint
=
970 fb
->_AllColorBuffersFixedPoint
&&
971 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
973 fb
->_HasSNormOrFloatColorBuffer
=
974 fb
->_HasSNormOrFloatColorBuffer
||
975 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
978 /* Error-check width, height, format */
979 if (numImages
== 1) {
986 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
987 /* check that width, height, format are same */
988 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
989 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
990 fbo_incomplete(ctx
, "width or height mismatch", -1);
993 /* check that all color buffers are the same format */
994 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
995 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
996 fbo_incomplete(ctx
, "format mismatch", -1);
1002 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1004 if (att
->Type
== GL_RENDERBUFFER
&&
1005 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1006 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1007 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1011 /* Check that layered rendering is consistent. */
1012 att_layer_count
= att
->Layered
? att
->Renderbuffer
->Depth
: 0;
1013 if (!layer_count_valid
) {
1014 layer_count
= att_layer_count
;
1015 layer_count_valid
= true;
1016 } else if (layer_count
!= att_layer_count
) {
1017 if (layer_count
== 0 || att_layer_count
== 0) {
1018 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1019 fbo_incomplete(ctx
, "framebuffer attachment layer mode is inconsistent", i
);
1021 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_COUNT_ARB
;
1022 fbo_incomplete(ctx
, "framebuffer attachment layer count is inconsistent", i
);
1028 fb
->Layered
= layer_count
> 0;
1030 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1031 /* Check that all DrawBuffers are present */
1032 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1033 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1034 const struct gl_renderbuffer_attachment
*att
1035 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1037 if (att
->Type
== GL_NONE
) {
1038 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1039 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1045 /* Check that the ReadBuffer is present */
1046 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1047 const struct gl_renderbuffer_attachment
*att
1048 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1050 if (att
->Type
== GL_NONE
) {
1051 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1052 fbo_incomplete(ctx
, "missing readbuffer", -1);
1058 if (numImages
== 0) {
1059 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1060 fbo_incomplete(ctx
, "no attachments", -1);
1064 /* Provisionally set status = COMPLETE ... */
1065 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1067 /* ... but the driver may say the FB is incomplete.
1068 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1071 if (ctx
->Driver
.ValidateFramebuffer
) {
1072 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1073 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1074 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1078 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1080 * Note that if ARB_framebuffer_object is supported and the attached
1081 * renderbuffers/textures are different sizes, the framebuffer
1082 * width/height will be set to the smallest width/height.
1084 fb
->Width
= minWidth
;
1085 fb
->Height
= minHeight
;
1087 /* finally, update the visual info for the framebuffer */
1088 _mesa_update_framebuffer_visual(ctx
, fb
);
1093 GLboolean GLAPIENTRY
1094 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1096 GET_CURRENT_CONTEXT(ctx
);
1097 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1099 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1100 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1108 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1110 struct gl_renderbuffer
*newRb
;
1111 GET_CURRENT_CONTEXT(ctx
);
1113 if (target
!= GL_RENDERBUFFER_EXT
) {
1114 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1118 /* No need to flush here since the render buffer binding has no
1119 * effect on rendering state.
1123 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1124 if (newRb
== &DummyRenderbuffer
) {
1125 /* ID was reserved, but no real renderbuffer object made yet */
1128 else if (!newRb
&& !allow_user_names
) {
1129 /* All RB IDs must be Gen'd */
1130 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1135 /* create new renderbuffer object */
1136 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1138 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1141 ASSERT(newRb
->AllocStorage
);
1142 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1143 newRb
->RefCount
= 1; /* referenced by hash table */
1150 ASSERT(newRb
!= &DummyRenderbuffer
);
1152 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1156 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1158 GET_CURRENT_CONTEXT(ctx
);
1160 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1161 * entry point, but they allow the use of user-generated names.
1163 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1167 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1169 /* This function should not be in the dispatch table for core profile /
1170 * OpenGL 3.1, so execution should never get here in those cases -- no
1171 * need for an explicit test.
1173 bind_renderbuffer(target
, renderbuffer
, true);
1178 * If the given renderbuffer is anywhere attached to the framebuffer, detach
1180 * This is used when a renderbuffer object is deleted.
1181 * The spec calls for unbinding.
1184 detach_renderbuffer(struct gl_context
*ctx
,
1185 struct gl_framebuffer
*fb
,
1186 struct gl_renderbuffer
*rb
)
1189 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1190 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
1191 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
1194 invalidate_framebuffer(fb
);
1199 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1202 GET_CURRENT_CONTEXT(ctx
);
1204 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1206 for (i
= 0; i
< n
; i
++) {
1207 if (renderbuffers
[i
] > 0) {
1208 struct gl_renderbuffer
*rb
;
1209 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1211 /* check if deleting currently bound renderbuffer object */
1212 if (rb
== ctx
->CurrentRenderbuffer
) {
1214 ASSERT(rb
->RefCount
>= 2);
1215 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1218 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1219 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1221 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1222 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1223 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1226 /* Remove from hash table immediately, to free the ID.
1227 * But the object will not be freed until it's no longer
1228 * referenced anywhere else.
1230 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1232 if (rb
!= &DummyRenderbuffer
) {
1233 /* no longer referenced by hash table */
1234 _mesa_reference_renderbuffer(&rb
, NULL
);
1243 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1245 GET_CURRENT_CONTEXT(ctx
);
1250 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1257 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1259 for (i
= 0; i
< n
; i
++) {
1260 GLuint name
= first
+ i
;
1261 renderbuffers
[i
] = name
;
1262 /* insert dummy placeholder into hash table */
1263 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1264 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1265 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1271 * Given an internal format token for a render buffer, return the
1272 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1273 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1274 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1276 * This is similar to _mesa_base_tex_format() but the set of valid
1277 * internal formats is different.
1279 * Note that even if a format is determined to be legal here, validation
1280 * of the FBO may fail if the format is not supported by the driver/GPU.
1282 * \param internalFormat as passed to glRenderbufferStorage()
1283 * \return the base internal format, or 0 if internalFormat is illegal
1286 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1289 * Notes: some formats such as alpha, luminance, etc. were added
1290 * with GL_ARB_framebuffer_object.
1292 switch (internalFormat
) {
1298 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1303 case GL_LUMINANCE12
:
1304 case GL_LUMINANCE16
:
1305 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1307 case GL_LUMINANCE_ALPHA
:
1308 case GL_LUMINANCE4_ALPHA4
:
1309 case GL_LUMINANCE6_ALPHA2
:
1310 case GL_LUMINANCE8_ALPHA8
:
1311 case GL_LUMINANCE12_ALPHA4
:
1312 case GL_LUMINANCE12_ALPHA12
:
1313 case GL_LUMINANCE16_ALPHA16
:
1314 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1315 ? GL_LUMINANCE_ALPHA
: 0;
1319 case GL_INTENSITY12
:
1320 case GL_INTENSITY16
:
1321 return ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_framebuffer_object
1332 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1334 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1343 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1345 case GL_SRGB8_ALPHA8_EXT
:
1346 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1347 case GL_STENCIL_INDEX
:
1348 case GL_STENCIL_INDEX1_EXT
:
1349 case GL_STENCIL_INDEX4_EXT
:
1350 case GL_STENCIL_INDEX16_EXT
:
1351 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1352 * OpenGL ES, but Mesa does not currently support them.
1354 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1355 case GL_STENCIL_INDEX8_EXT
:
1356 return GL_STENCIL_INDEX
;
1357 case GL_DEPTH_COMPONENT
:
1358 case GL_DEPTH_COMPONENT32
:
1359 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1360 case GL_DEPTH_COMPONENT16
:
1361 case GL_DEPTH_COMPONENT24
:
1362 return GL_DEPTH_COMPONENT
;
1363 case GL_DEPTH_STENCIL_EXT
:
1364 return _mesa_is_desktop_gl(ctx
)
1365 && ctx
->Extensions
.EXT_packed_depth_stencil
1366 ? GL_DEPTH_STENCIL_EXT
: 0;
1367 case GL_DEPTH24_STENCIL8_EXT
:
1368 return ctx
->Extensions
.EXT_packed_depth_stencil
1369 ? GL_DEPTH_STENCIL_EXT
: 0;
1370 case GL_DEPTH_COMPONENT32F
:
1371 return ctx
->Version
>= 30
1372 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1373 ? GL_DEPTH_COMPONENT
: 0;
1374 case GL_DEPTH32F_STENCIL8
:
1375 return ctx
->Version
>= 30
1376 || (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1377 ? GL_DEPTH_STENCIL
: 0;
1380 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1383 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1387 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1390 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1392 /* signed normalized texture formats */
1396 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1401 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1405 case GL_RGB16_SNORM
:
1406 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1409 case GL_RGBA8_SNORM
:
1410 case GL_RGBA16_SNORM
:
1411 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1413 case GL_ALPHA_SNORM
:
1414 case GL_ALPHA8_SNORM
:
1415 case GL_ALPHA16_SNORM
:
1416 return ctx
->API
== API_OPENGL_COMPAT
&&
1417 ctx
->Extensions
.EXT_texture_snorm
&&
1418 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1421 return ((_mesa_is_desktop_gl(ctx
) &&
1422 ctx
->Extensions
.ARB_texture_rg
&&
1423 ctx
->Extensions
.ARB_texture_float
) ||
1424 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1428 return ((_mesa_is_desktop_gl(ctx
) &&
1429 ctx
->Extensions
.ARB_texture_rg
&&
1430 ctx
->Extensions
.ARB_texture_float
) ||
1431 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1435 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1439 return ((_mesa_is_desktop_gl(ctx
) &&
1440 ctx
->Extensions
.ARB_texture_float
) ||
1441 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1443 case GL_ALPHA16F_ARB
:
1444 case GL_ALPHA32F_ARB
:
1445 return ctx
->API
== API_OPENGL_COMPAT
&&
1446 ctx
->Extensions
.ARB_texture_float
&&
1447 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1448 case GL_LUMINANCE16F_ARB
:
1449 case GL_LUMINANCE32F_ARB
:
1450 return ctx
->API
== API_OPENGL_COMPAT
&&
1451 ctx
->Extensions
.ARB_texture_float
&&
1452 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1453 case GL_LUMINANCE_ALPHA16F_ARB
:
1454 case GL_LUMINANCE_ALPHA32F_ARB
:
1455 return ctx
->API
== API_OPENGL_COMPAT
&&
1456 ctx
->Extensions
.ARB_texture_float
&&
1457 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1458 case GL_INTENSITY16F_ARB
:
1459 case GL_INTENSITY32F_ARB
:
1460 return ctx
->API
== API_OPENGL_COMPAT
&&
1461 ctx
->Extensions
.ARB_texture_float
&&
1462 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1464 return (_mesa_is_desktop_gl(ctx
)
1465 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1467 case GL_R11F_G11F_B10F
:
1468 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1469 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1472 case GL_RGBA8UI_EXT
:
1473 case GL_RGBA16UI_EXT
:
1474 case GL_RGBA32UI_EXT
:
1476 case GL_RGBA16I_EXT
:
1477 case GL_RGBA32I_EXT
:
1478 return ctx
->Version
>= 30
1479 || (_mesa_is_desktop_gl(ctx
) &&
1480 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1483 case GL_RGB16UI_EXT
:
1484 case GL_RGB32UI_EXT
:
1488 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1496 return ctx
->Version
>= 30
1497 || (_mesa_is_desktop_gl(ctx
) &&
1498 ctx
->Extensions
.ARB_texture_rg
&&
1499 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1507 return ctx
->Version
>= 30
1508 || (_mesa_is_desktop_gl(ctx
) &&
1509 ctx
->Extensions
.ARB_texture_rg
&&
1510 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1512 case GL_INTENSITY8I_EXT
:
1513 case GL_INTENSITY8UI_EXT
:
1514 case GL_INTENSITY16I_EXT
:
1515 case GL_INTENSITY16UI_EXT
:
1516 case GL_INTENSITY32I_EXT
:
1517 case GL_INTENSITY32UI_EXT
:
1518 return ctx
->API
== API_OPENGL_COMPAT
&&
1519 ctx
->Extensions
.EXT_texture_integer
&&
1520 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1522 case GL_LUMINANCE8I_EXT
:
1523 case GL_LUMINANCE8UI_EXT
:
1524 case GL_LUMINANCE16I_EXT
:
1525 case GL_LUMINANCE16UI_EXT
:
1526 case GL_LUMINANCE32I_EXT
:
1527 case GL_LUMINANCE32UI_EXT
:
1528 return ctx
->API
== API_OPENGL_COMPAT
&&
1529 ctx
->Extensions
.EXT_texture_integer
&&
1530 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1532 case GL_LUMINANCE_ALPHA8I_EXT
:
1533 case GL_LUMINANCE_ALPHA8UI_EXT
:
1534 case GL_LUMINANCE_ALPHA16I_EXT
:
1535 case GL_LUMINANCE_ALPHA16UI_EXT
:
1536 case GL_LUMINANCE_ALPHA32I_EXT
:
1537 case GL_LUMINANCE_ALPHA32UI_EXT
:
1538 return ctx
->API
== API_OPENGL_COMPAT
&&
1539 ctx
->Extensions
.EXT_texture_integer
&&
1540 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1542 case GL_ALPHA8I_EXT
:
1543 case GL_ALPHA8UI_EXT
:
1544 case GL_ALPHA16I_EXT
:
1545 case GL_ALPHA16UI_EXT
:
1546 case GL_ALPHA32I_EXT
:
1547 case GL_ALPHA32UI_EXT
:
1548 return ctx
->API
== API_OPENGL_COMPAT
&&
1549 ctx
->Extensions
.EXT_texture_integer
&&
1550 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1553 return (_mesa_is_desktop_gl(ctx
) &&
1554 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1555 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1558 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1567 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1570 invalidate_rb(GLuint key
, void *data
, void *userData
)
1572 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1573 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1575 /* If this is a user-created FBO */
1576 if (_mesa_is_user_fbo(fb
)) {
1578 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1579 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1580 if (att
->Type
== GL_RENDERBUFFER
&&
1581 att
->Renderbuffer
== rb
) {
1582 /* Mark fb status as indeterminate to force re-validation */
1591 /** sentinal value, see below */
1592 #define NO_SAMPLES 1000
1596 * Helper function used by _mesa_RenderbufferStorage() and
1597 * _mesa_RenderbufferStorageMultisample().
1598 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1601 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1602 GLsizei width
, GLsizei height
, GLsizei samples
)
1604 const char *func
= samples
== NO_SAMPLES
?
1605 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1606 struct gl_renderbuffer
*rb
;
1608 GLenum sample_count_error
;
1609 GET_CURRENT_CONTEXT(ctx
);
1611 if (MESA_VERBOSE
& VERBOSE_API
) {
1612 if (samples
== NO_SAMPLES
)
1613 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1615 _mesa_lookup_enum_by_nr(target
),
1616 _mesa_lookup_enum_by_nr(internalFormat
),
1619 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1621 _mesa_lookup_enum_by_nr(target
),
1622 _mesa_lookup_enum_by_nr(internalFormat
),
1623 width
, height
, samples
);
1626 if (target
!= GL_RENDERBUFFER_EXT
) {
1627 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1631 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1632 if (baseFormat
== 0) {
1633 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1634 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1638 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1639 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1643 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1644 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1648 if (samples
== NO_SAMPLES
) {
1649 /* NumSamples == 0 indicates non-multisampling */
1653 /* check the sample count;
1654 * note: driver may choose to use more samples than what's requested
1656 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1657 internalFormat
, samples
);
1658 if (sample_count_error
!= GL_NO_ERROR
) {
1659 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1664 rb
= ctx
->CurrentRenderbuffer
;
1666 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1670 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1672 if (rb
->InternalFormat
== internalFormat
&&
1673 rb
->Width
== (GLuint
) width
&&
1674 rb
->Height
== (GLuint
) height
&&
1675 rb
->NumSamples
== samples
) {
1676 /* no change in allocation needed */
1680 /* These MUST get set by the AllocStorage func */
1681 rb
->Format
= MESA_FORMAT_NONE
;
1682 rb
->NumSamples
= samples
;
1684 /* Now allocate the storage */
1685 ASSERT(rb
->AllocStorage
);
1686 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1687 /* No error - check/set fields now */
1688 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1689 assert(rb
->Width
== (GLuint
) width
);
1690 assert(rb
->Height
== (GLuint
) height
);
1691 rb
->InternalFormat
= internalFormat
;
1692 rb
->_BaseFormat
= baseFormat
;
1693 assert(rb
->_BaseFormat
!= 0);
1696 /* Probably ran out of memory - clear the fields */
1699 rb
->Format
= MESA_FORMAT_NONE
;
1700 rb
->InternalFormat
= GL_NONE
;
1701 rb
->_BaseFormat
= GL_NONE
;
1705 /* Invalidate the framebuffers the renderbuffer is attached in. */
1706 if (rb
->AttachedAnytime
) {
1707 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1713 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1715 struct gl_renderbuffer
*rb
;
1716 GET_CURRENT_CONTEXT(ctx
);
1718 if (!ctx
->Extensions
.OES_EGL_image
) {
1719 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1720 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1724 if (target
!= GL_RENDERBUFFER
) {
1725 _mesa_error(ctx
, GL_INVALID_ENUM
,
1726 "EGLImageTargetRenderbufferStorageOES");
1730 rb
= ctx
->CurrentRenderbuffer
;
1732 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1733 "EGLImageTargetRenderbufferStorageOES");
1737 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1739 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1744 * Helper function for _mesa_GetRenderbufferParameteriv() and
1745 * _mesa_GetFramebufferAttachmentParameteriv()
1746 * We have to be careful to respect the base format. For example, if a
1747 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1748 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1749 * we need to return zero.
1752 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1754 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1755 return _mesa_get_format_bits(format
, pname
);
1763 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1764 GLsizei width
, GLsizei height
)
1766 /* GL_ARB_fbo says calling this function is equivalent to calling
1767 * glRenderbufferStorageMultisample() with samples=0. We pass in
1768 * a token value here just for error reporting purposes.
1770 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1775 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1776 GLenum internalFormat
,
1777 GLsizei width
, GLsizei height
)
1779 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1784 * OpenGL ES version of glRenderBufferStorage.
1787 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1788 GLsizei width
, GLsizei height
)
1790 switch (internalFormat
) {
1792 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1793 /* choose a closest format */
1794 internalFormat
= GL_RGB5
;
1800 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1805 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1807 struct gl_renderbuffer
*rb
;
1808 GET_CURRENT_CONTEXT(ctx
);
1810 if (target
!= GL_RENDERBUFFER_EXT
) {
1811 _mesa_error(ctx
, GL_INVALID_ENUM
,
1812 "glGetRenderbufferParameterivEXT(target)");
1816 rb
= ctx
->CurrentRenderbuffer
;
1818 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1819 "glGetRenderbufferParameterivEXT");
1823 /* No need to flush here since we're just quering state which is
1824 * not effected by rendering.
1828 case GL_RENDERBUFFER_WIDTH_EXT
:
1829 *params
= rb
->Width
;
1831 case GL_RENDERBUFFER_HEIGHT_EXT
:
1832 *params
= rb
->Height
;
1834 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1835 *params
= rb
->InternalFormat
;
1837 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1838 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1839 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1840 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1841 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1842 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1843 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1845 case GL_RENDERBUFFER_SAMPLES
:
1846 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1847 || _mesa_is_gles3(ctx
)) {
1848 *params
= rb
->NumSamples
;
1853 _mesa_error(ctx
, GL_INVALID_ENUM
,
1854 "glGetRenderbufferParameterivEXT(target)");
1860 GLboolean GLAPIENTRY
1861 _mesa_IsFramebuffer(GLuint framebuffer
)
1863 GET_CURRENT_CONTEXT(ctx
);
1864 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1866 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1867 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1875 * Check if any of the attachments of the given framebuffer are textures
1876 * (render to texture). Call ctx->Driver.RenderTexture() for such
1880 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1883 ASSERT(ctx
->Driver
.RenderTexture
);
1885 if (_mesa_is_winsys_fbo(fb
))
1886 return; /* can't render to texture with winsys framebuffers */
1888 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1889 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1890 if (att
->Texture
&& att
->Renderbuffer
->TexImage
) {
1891 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1898 * Examine all the framebuffer's attachments to see if any are textures.
1899 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1900 * notify the device driver that the texture image may have changed.
1903 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1905 if (_mesa_is_winsys_fbo(fb
))
1906 return; /* can't render to texture with winsys framebuffers */
1908 if (ctx
->Driver
.FinishRenderTexture
) {
1910 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1911 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1912 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
1913 if (rb
&& rb
->NeedsFinishRenderTexture
) {
1914 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
1922 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
1924 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1925 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1926 GLboolean bindReadBuf
, bindDrawBuf
;
1927 GET_CURRENT_CONTEXT(ctx
);
1930 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1931 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1936 case GL_DRAW_FRAMEBUFFER_EXT
:
1937 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1938 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1941 bindDrawBuf
= GL_TRUE
;
1942 bindReadBuf
= GL_FALSE
;
1944 case GL_READ_FRAMEBUFFER_EXT
:
1945 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1946 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1949 bindDrawBuf
= GL_FALSE
;
1950 bindReadBuf
= GL_TRUE
;
1952 case GL_FRAMEBUFFER_EXT
:
1953 bindDrawBuf
= GL_TRUE
;
1954 bindReadBuf
= GL_TRUE
;
1957 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1962 /* Binding a user-created framebuffer object */
1963 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1964 if (newDrawFb
== &DummyFramebuffer
) {
1965 /* ID was reserved, but no real framebuffer object made yet */
1969 && _mesa_is_desktop_gl(ctx
)
1970 && ctx
->Extensions
.ARB_framebuffer_object
) {
1971 /* All FBO IDs must be Gen'd */
1972 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1977 /* create new framebuffer object */
1978 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1980 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1983 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1985 newReadFb
= newDrawFb
;
1988 /* Binding the window system framebuffer (which was originally set
1989 * with MakeCurrent).
1991 newDrawFb
= ctx
->WinSysDrawBuffer
;
1992 newReadFb
= ctx
->WinSysReadBuffer
;
1996 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1998 /* save pointers to current/old framebuffers */
1999 oldDrawFb
= ctx
->DrawBuffer
;
2000 oldReadFb
= ctx
->ReadBuffer
;
2002 /* check if really changing bindings */
2003 if (oldDrawFb
== newDrawFb
)
2004 bindDrawBuf
= GL_FALSE
;
2005 if (oldReadFb
== newReadFb
)
2006 bindReadBuf
= GL_FALSE
;
2009 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2011 * We also check if we're beginning and/or ending render-to-texture.
2012 * When a framebuffer with texture attachments is unbound, call
2013 * ctx->Driver.FinishRenderTexture().
2014 * When a framebuffer with texture attachments is bound, call
2015 * ctx->Driver.RenderTexture().
2017 * Note that if the ReadBuffer has texture attachments we don't consider
2018 * that a render-to-texture case.
2021 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2023 /* check if old readbuffer was render-to-texture */
2024 check_end_texture_render(ctx
, oldReadFb
);
2026 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2030 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2032 /* check if old framebuffer had any texture attachments */
2034 check_end_texture_render(ctx
, oldDrawFb
);
2036 /* check if newly bound framebuffer has any texture attachments */
2037 check_begin_texture_render(ctx
, newDrawFb
);
2039 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2042 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2043 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2048 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2050 _mesa_BindFramebuffer(target
, framebuffer
);
2056 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2059 GET_CURRENT_CONTEXT(ctx
);
2061 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2063 for (i
= 0; i
< n
; i
++) {
2064 if (framebuffers
[i
] > 0) {
2065 struct gl_framebuffer
*fb
;
2066 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2068 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2070 /* check if deleting currently bound framebuffer object */
2071 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
2072 /* separate draw/read binding points */
2073 if (fb
== ctx
->DrawBuffer
) {
2075 ASSERT(fb
->RefCount
>= 2);
2076 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER_EXT
, 0);
2078 if (fb
== ctx
->ReadBuffer
) {
2080 ASSERT(fb
->RefCount
>= 2);
2081 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER_EXT
, 0);
2085 /* only one binding point for read/draw buffers */
2086 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
2088 ASSERT(fb
->RefCount
>= 2);
2089 _mesa_BindFramebuffer(GL_FRAMEBUFFER_EXT
, 0);
2093 /* remove from hash table immediately, to free the ID */
2094 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2096 if (fb
!= &DummyFramebuffer
) {
2097 /* But the object will not be freed until it's no longer
2098 * bound in any context.
2100 _mesa_reference_framebuffer(&fb
, NULL
);
2109 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2111 GET_CURRENT_CONTEXT(ctx
);
2116 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2123 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2125 for (i
= 0; i
< n
; i
++) {
2126 GLuint name
= first
+ i
;
2127 framebuffers
[i
] = name
;
2128 /* insert dummy placeholder into hash table */
2129 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
2130 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2131 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
2138 _mesa_CheckFramebufferStatus(GLenum target
)
2140 struct gl_framebuffer
*buffer
;
2141 GET_CURRENT_CONTEXT(ctx
);
2143 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2145 if (MESA_VERBOSE
& VERBOSE_API
)
2146 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2147 _mesa_lookup_enum_by_nr(target
));
2149 buffer
= get_framebuffer_target(ctx
, target
);
2151 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2155 if (_mesa_is_winsys_fbo(buffer
)) {
2156 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2157 if (buffer
!= &IncompleteFramebuffer
) {
2158 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2160 return GL_FRAMEBUFFER_UNDEFINED
;
2164 /* No need to flush here */
2166 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2167 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2170 return buffer
->_Status
;
2175 * Replicate the src attachment point. Used by framebuffer_texture() when
2176 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2177 * GL_STENCIL_ATTACHMENT.
2180 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2181 gl_buffer_index dst
,
2182 gl_buffer_index src
)
2184 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2185 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2187 assert(src_att
->Texture
!= NULL
);
2188 assert(src_att
->Renderbuffer
!= NULL
);
2190 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2191 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2192 dst_att
->Type
= src_att
->Type
;
2193 dst_att
->Complete
= src_att
->Complete
;
2194 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2195 dst_att
->Zoffset
= src_att
->Zoffset
;
2200 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2201 * glFramebufferTextureLayerEXT().
2202 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
2203 * get textarget=0 in that case.
2206 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2207 GLenum attachment
, GLenum textarget
, GLuint texture
,
2208 GLint level
, GLint zoffset
, GLboolean layered
)
2210 struct gl_renderbuffer_attachment
*att
;
2211 struct gl_texture_object
*texObj
= NULL
;
2212 struct gl_framebuffer
*fb
;
2213 GLenum maxLevelsTarget
;
2215 fb
= get_framebuffer_target(ctx
, target
);
2217 _mesa_error(ctx
, GL_INVALID_ENUM
,
2218 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2222 /* check framebuffer binding */
2223 if (_mesa_is_winsys_fbo(fb
)) {
2224 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2225 "glFramebufferTexture%sEXT", caller
);
2229 /* The textarget, level, and zoffset parameters are only validated if
2230 * texture is non-zero.
2233 GLboolean err
= GL_TRUE
;
2235 texObj
= _mesa_lookup_texture(ctx
, texture
);
2236 if (texObj
!= NULL
) {
2237 if (textarget
== 0) {
2238 /* If textarget == 0 it means we're being called by
2239 * glFramebufferTextureLayer() and textarget is not used.
2240 * The only legal texture types for that function are 3D and
2241 * 1D/2D arrays textures.
2243 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2244 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2245 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2246 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2247 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2250 /* Make sure textarget is consistent with the texture's type */
2251 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2252 ? !_mesa_is_cube_face(textarget
)
2253 : (texObj
->Target
!= textarget
);
2257 /* can't render to a non-existant texture */
2258 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2259 "glFramebufferTexture%sEXT(non existant texture)",
2265 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2266 "glFramebufferTexture%sEXT(texture target mismatch)",
2271 if (texObj
->Target
== GL_TEXTURE_3D
) {
2272 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2273 if (zoffset
< 0 || zoffset
>= maxSize
) {
2274 _mesa_error(ctx
, GL_INVALID_VALUE
,
2275 "glFramebufferTexture%sEXT(zoffset)", caller
);
2279 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2280 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2281 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2282 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2284 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2285 _mesa_error(ctx
, GL_INVALID_VALUE
,
2286 "glFramebufferTexture%sEXT(layer)", caller
);
2291 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2293 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2294 _mesa_error(ctx
, GL_INVALID_VALUE
,
2295 "glFramebufferTexture%sEXT(level)", caller
);
2300 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2302 _mesa_error(ctx
, GL_INVALID_ENUM
,
2303 "glFramebufferTexture%sEXT(attachment)", caller
);
2307 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2309 _glthread_LOCK_MUTEX(fb
->Mutex
);
2311 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2312 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2313 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2314 _mesa_tex_target_to_face(textarget
) ==
2315 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2316 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2317 /* The texture object is already attached to the stencil attachment
2318 * point. Don't create a new renderbuffer; just reuse the stencil
2319 * attachment's. This is required to prevent a GL error in
2320 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2322 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2324 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2325 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2326 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2327 _mesa_tex_target_to_face(textarget
) ==
2328 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2329 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2330 /* As above, but with depth and stencil transposed. */
2331 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2334 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2335 level
, zoffset
, layered
);
2336 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2337 /* Above we created a new renderbuffer and attached it to the
2338 * depth attachment point. Now attach it to the stencil attachment
2341 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2342 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2347 /* Set the render-to-texture flag. We'll check this flag in
2348 * glTexImage() and friends to determine if we need to revalidate
2349 * any FBOs that might be rendering into this texture.
2350 * This flag never gets cleared since it's non-trivial to determine
2351 * when all FBOs might be done rendering to this texture. That's OK
2352 * though since it's uncommon to render to a texture then repeatedly
2353 * call glTexImage() to change images in the texture.
2355 texObj
->_RenderToTexture
= GL_TRUE
;
2358 _mesa_remove_attachment(ctx
, att
);
2359 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2360 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2361 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2365 invalidate_framebuffer(fb
);
2367 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2373 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2374 GLenum textarget
, GLuint texture
, GLint level
)
2376 GET_CURRENT_CONTEXT(ctx
);
2381 switch (textarget
) {
2385 case GL_TEXTURE_1D_ARRAY
:
2386 error
= !ctx
->Extensions
.EXT_texture_array
;
2393 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2394 "glFramebufferTexture1DEXT(textarget=%s)",
2395 _mesa_lookup_enum_by_nr(textarget
));
2400 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2401 level
, 0, GL_FALSE
);
2406 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2407 GLenum textarget
, GLuint texture
, GLint level
)
2409 GET_CURRENT_CONTEXT(ctx
);
2414 switch (textarget
) {
2418 case GL_TEXTURE_RECTANGLE
:
2419 error
= _mesa_is_gles(ctx
)
2420 || !ctx
->Extensions
.NV_texture_rectangle
;
2422 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2423 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2424 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2425 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2426 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2427 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2428 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2430 case GL_TEXTURE_2D_ARRAY
:
2431 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2432 || !ctx
->Extensions
.EXT_texture_array
;
2434 case GL_TEXTURE_2D_MULTISAMPLE
:
2435 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2436 error
= _mesa_is_gles(ctx
)
2437 || !ctx
->Extensions
.ARB_texture_multisample
;
2444 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2445 "glFramebufferTexture2DEXT(textarget=%s)",
2446 _mesa_lookup_enum_by_nr(textarget
));
2451 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2452 level
, 0, GL_FALSE
);
2457 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2458 GLenum textarget
, GLuint texture
,
2459 GLint level
, GLint zoffset
)
2461 GET_CURRENT_CONTEXT(ctx
);
2463 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2464 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2465 "glFramebufferTexture3DEXT(textarget)");
2469 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2470 level
, zoffset
, GL_FALSE
);
2475 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2476 GLuint texture
, GLint level
, GLint layer
)
2478 GET_CURRENT_CONTEXT(ctx
);
2480 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2481 level
, layer
, GL_FALSE
);
2486 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2487 GLuint texture
, GLint level
)
2489 GET_CURRENT_CONTEXT(ctx
);
2491 if (_mesa_has_geometry_shaders(ctx
)) {
2492 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2495 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2496 "unsupported function (glFramebufferTexture) called");
2502 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2503 GLenum renderbufferTarget
,
2504 GLuint renderbuffer
)
2506 struct gl_renderbuffer_attachment
*att
;
2507 struct gl_framebuffer
*fb
;
2508 struct gl_renderbuffer
*rb
;
2509 GET_CURRENT_CONTEXT(ctx
);
2511 fb
= get_framebuffer_target(ctx
, target
);
2513 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2517 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2518 _mesa_error(ctx
, GL_INVALID_ENUM
,
2519 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2523 if (_mesa_is_winsys_fbo(fb
)) {
2524 /* Can't attach new renderbuffers to a window system framebuffer */
2525 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2529 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2531 _mesa_error(ctx
, GL_INVALID_ENUM
,
2532 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2533 _mesa_lookup_enum_by_nr(attachment
));
2538 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2540 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2541 "glFramebufferRenderbufferEXT(non-existant"
2542 " renderbuffer %u)", renderbuffer
);
2545 else if (rb
== &DummyRenderbuffer
) {
2546 /* This is what NVIDIA does */
2547 _mesa_error(ctx
, GL_INVALID_VALUE
,
2548 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2554 /* remove renderbuffer attachment */
2558 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2559 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2560 /* make sure the renderbuffer is a depth/stencil format */
2561 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2562 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2563 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2564 "glFramebufferRenderbufferEXT(renderbuffer"
2565 " is not DEPTH_STENCIL format)");
2571 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2573 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2574 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2576 /* Some subsequent GL commands may depend on the framebuffer's visual
2577 * after the binding is updated. Update visual info now.
2579 _mesa_update_framebuffer_visual(ctx
, fb
);
2584 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2585 GLenum pname
, GLint
*params
)
2587 const struct gl_renderbuffer_attachment
*att
;
2588 struct gl_framebuffer
*buffer
;
2590 GET_CURRENT_CONTEXT(ctx
);
2592 /* The error differs in GL and GLES. */
2593 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2595 buffer
= get_framebuffer_target(ctx
, target
);
2597 _mesa_error(ctx
, GL_INVALID_ENUM
,
2598 "glGetFramebufferAttachmentParameterivEXT(target)");
2602 if (_mesa_is_winsys_fbo(buffer
)) {
2603 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2606 * "If the framebuffer currently bound to target is zero, then
2607 * INVALID_OPERATION is generated."
2609 * The EXT_framebuffer_object spec has the same wording, and the
2610 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2613 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2614 && !_mesa_is_gles3(ctx
)) {
2615 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2616 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2620 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2621 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2622 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2623 "glGetFramebufferAttachmentParameteriv(attachment)");
2626 /* the default / window-system FBO */
2627 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2630 /* user-created framebuffer FBO */
2631 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2635 _mesa_error(ctx
, GL_INVALID_ENUM
,
2636 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2640 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2641 /* the depth and stencil attachments must point to the same buffer */
2642 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2643 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2644 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2645 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2646 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2647 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2648 " attachments differ)");
2653 /* No need to flush here */
2656 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2657 *params
= _mesa_is_winsys_fbo(buffer
)
2658 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2660 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2661 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2662 *params
= att
->Renderbuffer
->Name
;
2664 else if (att
->Type
== GL_TEXTURE
) {
2665 *params
= att
->Texture
->Name
;
2668 assert(att
->Type
== GL_NONE
);
2669 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2672 goto invalid_pname_enum
;
2676 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2677 if (att
->Type
== GL_TEXTURE
) {
2678 *params
= att
->TextureLevel
;
2680 else if (att
->Type
== GL_NONE
) {
2681 _mesa_error(ctx
, err
,
2682 "glGetFramebufferAttachmentParameterivEXT(pname)");
2685 goto invalid_pname_enum
;
2688 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2689 if (att
->Type
== GL_TEXTURE
) {
2690 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2691 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2697 else if (att
->Type
== GL_NONE
) {
2698 _mesa_error(ctx
, err
,
2699 "glGetFramebufferAttachmentParameterivEXT(pname)");
2702 goto invalid_pname_enum
;
2705 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2706 if (ctx
->API
== API_OPENGLES
) {
2707 goto invalid_pname_enum
;
2708 } else if (att
->Type
== GL_NONE
) {
2709 _mesa_error(ctx
, err
,
2710 "glGetFramebufferAttachmentParameterivEXT(pname)");
2711 } else if (att
->Type
== GL_TEXTURE
) {
2712 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2713 *params
= att
->Zoffset
;
2720 goto invalid_pname_enum
;
2723 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2724 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2725 && !_mesa_is_gles3(ctx
)) {
2726 goto invalid_pname_enum
;
2728 else if (att
->Type
== GL_NONE
) {
2729 _mesa_error(ctx
, err
,
2730 "glGetFramebufferAttachmentParameterivEXT(pname)");
2733 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2734 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2737 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2738 * if the sRGB conversion is unsupported. */
2739 *params
= GL_LINEAR
;
2743 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2744 if ((ctx
->API
!= API_OPENGL_COMPAT
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2745 && ctx
->API
!= API_OPENGL_CORE
2746 && !_mesa_is_gles3(ctx
)) {
2747 goto invalid_pname_enum
;
2749 else if (att
->Type
== GL_NONE
) {
2750 _mesa_error(ctx
, err
,
2751 "glGetFramebufferAttachmentParameterivEXT(pname)");
2754 gl_format format
= att
->Renderbuffer
->Format
;
2756 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2759 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2760 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2761 * generate an INVALID_OPERATION error.
2763 if (_mesa_is_gles3(ctx
) && attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2764 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2765 "glGetFramebufferAttachmentParameteriv(cannot query "
2766 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2767 "GL_DEPTH_STENCIL_ATTACHMENT");
2771 if (format
== MESA_FORMAT_S8
) {
2775 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2776 /* depends on the attachment parameter */
2777 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2785 *params
= _mesa_get_format_datatype(format
);
2789 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2790 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2791 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2792 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2793 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2794 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2795 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2796 && !_mesa_is_gles3(ctx
)) {
2797 goto invalid_pname_enum
;
2799 else if (att
->Type
== GL_NONE
) {
2800 _mesa_error(ctx
, err
,
2801 "glGetFramebufferAttachmentParameterivEXT(pname)");
2803 else if (att
->Texture
) {
2804 const struct gl_texture_image
*texImage
=
2805 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2808 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2809 texImage
->TexFormat
);
2815 else if (att
->Renderbuffer
) {
2816 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2817 att
->Renderbuffer
->Format
);
2820 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2821 " invalid FBO attachment structure");
2825 goto invalid_pname_enum
;
2831 _mesa_error(ctx
, GL_INVALID_ENUM
,
2832 "glGetFramebufferAttachmentParameteriv(pname)");
2838 _mesa_GenerateMipmap(GLenum target
)
2840 struct gl_texture_image
*srcImage
;
2841 struct gl_texture_object
*texObj
;
2844 GET_CURRENT_CONTEXT(ctx
);
2846 FLUSH_VERTICES(ctx
, 0);
2850 error
= _mesa_is_gles(ctx
);
2856 error
= ctx
->API
== API_OPENGLES
;
2858 case GL_TEXTURE_CUBE_MAP
:
2859 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2861 case GL_TEXTURE_1D_ARRAY
:
2862 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2864 case GL_TEXTURE_2D_ARRAY
:
2865 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2866 || !ctx
->Extensions
.EXT_texture_array
;
2873 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2874 _mesa_lookup_enum_by_nr(target
));
2878 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2880 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2885 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2886 !_mesa_cube_complete(texObj
)) {
2887 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2888 "glGenerateMipmap(incomplete cube map)");
2892 _mesa_lock_texture(ctx
, texObj
);
2894 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2896 _mesa_unlock_texture(ctx
, texObj
);
2897 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2898 "glGenerateMipmap(zero size base image)");
2902 if (_mesa_is_enum_format_integer(srcImage
->InternalFormat
) ||
2903 _mesa_is_depthstencil_format(srcImage
->InternalFormat
) ||
2904 _mesa_is_stencil_format(srcImage
->InternalFormat
)) {
2905 _mesa_unlock_texture(ctx
, texObj
);
2906 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2907 "glGenerateMipmap(invalid internal format)");
2911 if (target
== GL_TEXTURE_CUBE_MAP
) {
2913 for (face
= 0; face
< 6; face
++)
2914 ctx
->Driver
.GenerateMipmap(ctx
,
2915 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2919 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2921 _mesa_unlock_texture(ctx
, texObj
);
2925 static const struct gl_renderbuffer_attachment
*
2926 find_attachment(const struct gl_framebuffer
*fb
,
2927 const struct gl_renderbuffer
*rb
)
2930 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2931 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2932 return &fb
->Attachment
[i
];
2939 * Helper function for checking if the datatypes of color buffers are
2940 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2942 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2943 * and any of the following conditions hold:
2944 * - The read buffer contains fixed-point or floating-point values and any
2945 * draw buffer contains neither fixed-point nor floating-point values.
2946 * - The read buffer contains unsigned integer values and any draw buffer
2947 * does not contain unsigned integer values.
2948 * - The read buffer contains signed integer values and any draw buffer
2949 * does not contain signed integer values."
2952 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2954 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2955 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2957 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2958 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2959 srcType
== GL_SIGNED_NORMALIZED
||
2960 srcType
== GL_FLOAT
);
2961 /* Boil any of those types down to GL_FLOAT */
2965 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2966 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2967 dstType
== GL_SIGNED_NORMALIZED
||
2968 dstType
== GL_FLOAT
);
2969 /* Boil any of those types down to GL_FLOAT */
2973 return srcType
== dstType
;
2978 compatible_resolve_formats(const struct gl_renderbuffer
*readRb
,
2979 const struct gl_renderbuffer
*drawRb
)
2981 GLenum readFormat
, drawFormat
;
2983 /* The simple case where we know the backing Mesa formats are the same.
2985 if (_mesa_get_srgb_format_linear(readRb
->Format
) ==
2986 _mesa_get_srgb_format_linear(drawRb
->Format
)) {
2990 /* The Mesa formats are different, so we must check whether the internal
2991 * formats are compatible.
2993 * Under some circumstances, the user may request e.g. two GL_RGBA8
2994 * textures and get two entirely different Mesa formats like RGBA8888 and
2995 * ARGB8888. Drivers behaving like that should be able to cope with
2996 * non-matching formats by themselves, because it's not the user's fault.
2998 * Blits between linear and sRGB formats are also allowed.
3000 readFormat
= _mesa_get_nongeneric_internalformat(readRb
->InternalFormat
);
3001 drawFormat
= _mesa_get_nongeneric_internalformat(drawRb
->InternalFormat
);
3002 readFormat
= _mesa_get_linear_internalformat(readFormat
);
3003 drawFormat
= _mesa_get_linear_internalformat(drawFormat
);
3005 if (readFormat
== drawFormat
) {
3013 is_valid_blit_filter(const struct gl_context
*ctx
, GLenum filter
)
3019 case GL_SCALED_RESOLVE_FASTEST_EXT
:
3020 case GL_SCALED_RESOLVE_NICEST_EXT
:
3021 return ctx
->Extensions
.EXT_framebuffer_multisample_blit_scaled
;
3028 * Blit rectangular region, optionally from one framebuffer to another.
3030 * Note, if the src buffer is multisampled and the dest is not, this is
3031 * when the samples must be resolved to a single color.
3034 _mesa_BlitFramebuffer(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
3035 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
3036 GLbitfield mask
, GLenum filter
)
3038 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
3039 GL_DEPTH_BUFFER_BIT
|
3040 GL_STENCIL_BUFFER_BIT
);
3041 const struct gl_framebuffer
*readFb
, *drawFb
;
3042 GET_CURRENT_CONTEXT(ctx
);
3044 FLUSH_VERTICES(ctx
, 0);
3046 if (MESA_VERBOSE
& VERBOSE_API
)
3048 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
3049 srcX0
, srcY0
, srcX1
, srcY1
,
3050 dstX0
, dstY0
, dstX1
, dstY1
,
3051 mask
, _mesa_lookup_enum_by_nr(filter
));
3053 if (ctx
->NewState
) {
3054 _mesa_update_state(ctx
);
3057 readFb
= ctx
->ReadBuffer
;
3058 drawFb
= ctx
->DrawBuffer
;
3060 if (!readFb
|| !drawFb
) {
3061 /* This will normally never happen but someday we may want to
3062 * support MakeCurrent() with no drawables.
3067 /* check for complete framebuffers */
3068 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
3069 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
3070 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
3071 "glBlitFramebufferEXT(incomplete draw/read buffers)");
3075 if (!is_valid_blit_filter(ctx
, filter
)) {
3076 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(%s)",
3077 _mesa_lookup_enum_by_nr(filter
));
3081 if ((filter
== GL_SCALED_RESOLVE_FASTEST_EXT
||
3082 filter
== GL_SCALED_RESOLVE_NICEST_EXT
) &&
3083 (readFb
->Visual
.samples
== 0 || drawFb
->Visual
.samples
> 0)) {
3084 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT(%s)",
3085 _mesa_lookup_enum_by_nr(filter
));
3089 if (mask
& ~legalMaskBits
) {
3090 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
3094 /* depth/stencil must be blitted with nearest filtering */
3095 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
3096 && filter
!= GL_NEAREST
) {
3097 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3098 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
3102 /* get color read/draw renderbuffers */
3103 if (mask
& GL_COLOR_BUFFER_BIT
) {
3104 const GLuint numColorDrawBuffers
= ctx
->DrawBuffer
->_NumColorDrawBuffers
;
3105 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3106 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3109 /* From the EXT_framebuffer_object spec:
3111 * "If a buffer is specified in <mask> and does not exist in both
3112 * the read and draw framebuffers, the corresponding bit is silently
3115 if (!colorReadRb
|| numColorDrawBuffers
== 0) {
3116 mask
&= ~GL_COLOR_BUFFER_BIT
;
3119 for (i
= 0; i
< numColorDrawBuffers
; i
++) {
3120 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3124 /* Page 193 (page 205 of the PDF) in section 4.3.2 of the OpenGL
3125 * ES 3.0.1 spec says:
3127 * "If the source and destination buffers are identical, an
3128 * INVALID_OPERATION error is generated. Different mipmap
3129 * levels of a texture, different layers of a three-
3130 * dimensional texture or two-dimensional array texture, and
3131 * different faces of a cube map texture do not constitute
3132 * identical buffers."
3134 if (_mesa_is_gles3(ctx
) && (colorDrawRb
== colorReadRb
)) {
3135 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3136 "glBlitFramebuffer(source and destination color "
3137 "buffer cannot be the same)");
3141 if (!compatible_color_datatypes(colorReadRb
->Format
,
3142 colorDrawRb
->Format
)) {
3143 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3144 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
3147 /* extra checks for multisample copies... */
3148 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
3149 /* color formats must match */
3150 if (!compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
3151 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3152 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
3157 if (filter
!= GL_NEAREST
) {
3158 /* From EXT_framebuffer_multisample_blit_scaled specification:
3159 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3160 * if filter is not NEAREST and read buffer contains integer data."
3162 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3163 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3164 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3165 "glBlitFramebufferEXT(integer color type)");
3172 if (mask
& GL_STENCIL_BUFFER_BIT
) {
3173 struct gl_renderbuffer
*readRb
=
3174 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3175 struct gl_renderbuffer
*drawRb
=
3176 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
3178 /* From the EXT_framebuffer_object spec:
3180 * "If a buffer is specified in <mask> and does not exist in both
3181 * the read and draw framebuffers, the corresponding bit is silently
3184 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3185 mask
&= ~GL_STENCIL_BUFFER_BIT
;
3188 int read_z_bits
, draw_z_bits
;
3190 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3191 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3192 "glBlitFramebuffer(source and destination stencil "
3193 "buffer cannot be the same)");
3197 if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
3198 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
3199 /* There is no need to check the stencil datatype here, because
3200 * there is only one: GL_UNSIGNED_INT.
3202 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3203 "glBlitFramebuffer(stencil attachment format mismatch)");
3207 read_z_bits
= _mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
);
3208 draw_z_bits
= _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
);
3210 /* If both buffers also have depth data, the depth formats must match
3211 * as well. If one doesn't have depth, it's not blitted, so we should
3212 * ignore the depth format check.
3214 if (read_z_bits
> 0 && draw_z_bits
> 0 &&
3215 (read_z_bits
!= draw_z_bits
||
3216 _mesa_get_format_datatype(readRb
->Format
) !=
3217 _mesa_get_format_datatype(drawRb
->Format
))) {
3219 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3220 "(stencil attachment depth format mismatch)");
3226 if (mask
& GL_DEPTH_BUFFER_BIT
) {
3227 struct gl_renderbuffer
*readRb
=
3228 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3229 struct gl_renderbuffer
*drawRb
=
3230 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
3232 /* From the EXT_framebuffer_object spec:
3234 * "If a buffer is specified in <mask> and does not exist in both
3235 * the read and draw framebuffers, the corresponding bit is silently
3238 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
3239 mask
&= ~GL_DEPTH_BUFFER_BIT
;
3242 int read_s_bit
, draw_s_bit
;
3244 if (_mesa_is_gles3(ctx
) && (drawRb
== readRb
)) {
3245 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3246 "glBlitFramebuffer(source and destination depth "
3247 "buffer cannot be the same)");
3251 if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
3252 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
3253 (_mesa_get_format_datatype(readRb
->Format
) !=
3254 _mesa_get_format_datatype(drawRb
->Format
))) {
3255 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3256 "glBlitFramebuffer(depth attachment format mismatch)");
3260 read_s_bit
= _mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
);
3261 draw_s_bit
= _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
);
3263 /* If both buffers also have stencil data, the stencil formats must
3264 * match as well. If one doesn't have stencil, it's not blitted, so
3265 * we should ignore the stencil format check.
3267 if (read_s_bit
> 0 && draw_s_bit
> 0 && read_s_bit
!= draw_s_bit
) {
3268 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebuffer"
3269 "(depth attachment stencil bits mismatch)");
3276 if (_mesa_is_gles3(ctx
)) {
3277 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3280 * "If SAMPLE_BUFFERS for the draw framebuffer is greater than zero,
3281 * an INVALID_OPERATION error is generated."
3283 if (drawFb
->Visual
.samples
> 0) {
3284 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3285 "glBlitFramebuffer(destination samples must be 0)");
3289 /* Page 194 (page 206 of the PDF) in section 4.3.2 of the OpenGL ES
3292 * "If SAMPLE_BUFFERS for the read framebuffer is greater than zero,
3293 * no copy is performed and an INVALID_OPERATION error is generated
3294 * if the formats of the read and draw framebuffers are not
3295 * identical or if the source and destination rectangles are not
3296 * defined with the same (X0, Y0) and (X1, Y1) bounds."
3298 * The format check was made above because desktop OpenGL has the same
3301 if (readFb
->Visual
.samples
> 0
3302 && (srcX0
!= dstX0
|| srcY0
!= dstY0
3303 || srcX1
!= dstX1
|| srcY1
!= dstY1
)) {
3304 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3305 "glBlitFramebuffer(bad src/dst multisample region)");
3309 if (readFb
->Visual
.samples
> 0 &&
3310 drawFb
->Visual
.samples
> 0 &&
3311 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
3312 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3313 "glBlitFramebufferEXT(mismatched samples)");
3317 /* extra checks for multisample copies... */
3318 if ((readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) &&
3319 (filter
== GL_NEAREST
|| filter
== GL_LINEAR
)) {
3320 /* src and dest region sizes must be the same */
3321 if (abs(srcX1
- srcX0
) != abs(dstX1
- dstX0
) ||
3322 abs(srcY1
- srcY0
) != abs(dstY1
- dstY0
)) {
3323 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3324 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
3330 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3331 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3337 const struct gl_renderbuffer
*colorReadRb
= readFb
->_ColorReadBuffer
;
3338 const struct gl_renderbuffer
*colorDrawRb
= NULL
;
3341 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3343 srcX0
, srcY0
, srcX1
, srcY1
,
3344 dstX0
, dstY0
, dstX1
, dstY1
,
3347 const struct gl_renderbuffer_attachment
*att
;
3349 att
= find_attachment(readFb
, colorReadRb
);
3350 printf(" Src FBO %u RB %u (%dx%d) ",
3351 readFb
->Name
, colorReadRb
->Name
,
3352 colorReadRb
->Width
, colorReadRb
->Height
);
3353 if (att
&& att
->Texture
) {
3354 printf("Tex %u tgt 0x%x level %u face %u",
3356 att
->Texture
->Target
,
3362 /* Print all active color render buffers */
3363 for (i
= 0; i
< ctx
->DrawBuffer
->_NumColorDrawBuffers
; i
++) {
3364 colorDrawRb
= ctx
->DrawBuffer
->_ColorDrawBuffers
[i
];
3368 att
= find_attachment(drawFb
, colorDrawRb
);
3369 printf(" Dst FBO %u RB %u (%dx%d) ",
3370 drawFb
->Name
, colorDrawRb
->Name
,
3371 colorDrawRb
->Width
, colorDrawRb
->Height
);
3372 if (att
&& att
->Texture
) {
3373 printf("Tex %u tgt 0x%x level %u face %u",
3375 att
->Texture
->Target
,
3385 (srcX1
- srcX0
) == 0 || (srcY1
- srcY0
) == 0 ||
3386 (dstX1
- dstX0
) == 0 || (dstY1
- dstY0
) == 0) {
3390 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3391 ctx
->Driver
.BlitFramebuffer(ctx
,
3392 srcX0
, srcY0
, srcX1
, srcY1
,
3393 dstX0
, dstY0
, dstX1
, dstY1
,
3399 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3400 const GLenum
*attachments
, GLint x
, GLint y
,
3401 GLsizei width
, GLsizei height
, const char *name
)
3404 struct gl_framebuffer
*fb
;
3405 GET_CURRENT_CONTEXT(ctx
);
3407 fb
= get_framebuffer_target(ctx
, target
);
3409 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3413 if (numAttachments
< 0) {
3414 _mesa_error(ctx
, GL_INVALID_VALUE
,
3415 "%s(numAttachments < 0)", name
);
3419 /* The GL_ARB_invalidate_subdata spec says:
3421 * "If an attachment is specified that does not exist in the
3422 * framebuffer bound to <target>, it is ignored."
3426 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3427 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3428 * INVALID_OPERATION is generated."
3430 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3431 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3432 * set of retrictions).
3434 for (i
= 0; i
< numAttachments
; i
++) {
3435 if (_mesa_is_winsys_fbo(fb
)) {
3436 switch (attachments
[i
]) {
3442 /* Accumulation buffers and auxilary buffers were removed in
3443 * OpenGL 3.1, and they never existed in OpenGL ES.
3445 if (ctx
->API
!= API_OPENGL_COMPAT
)
3455 case GL_FRONT_RIGHT
:
3456 if (!_mesa_is_desktop_gl(ctx
))
3463 switch (attachments
[i
]) {
3464 case GL_DEPTH_ATTACHMENT
:
3465 case GL_STENCIL_ATTACHMENT
:
3467 case GL_COLOR_ATTACHMENT0
:
3468 case GL_COLOR_ATTACHMENT1
:
3469 case GL_COLOR_ATTACHMENT2
:
3470 case GL_COLOR_ATTACHMENT3
:
3471 case GL_COLOR_ATTACHMENT4
:
3472 case GL_COLOR_ATTACHMENT5
:
3473 case GL_COLOR_ATTACHMENT6
:
3474 case GL_COLOR_ATTACHMENT7
:
3475 case GL_COLOR_ATTACHMENT8
:
3476 case GL_COLOR_ATTACHMENT9
:
3477 case GL_COLOR_ATTACHMENT10
:
3478 case GL_COLOR_ATTACHMENT11
:
3479 case GL_COLOR_ATTACHMENT12
:
3480 case GL_COLOR_ATTACHMENT13
:
3481 case GL_COLOR_ATTACHMENT14
:
3482 case GL_COLOR_ATTACHMENT15
: {
3483 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3484 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3485 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3486 "%s(attachment >= max. color attachments)", name
);
3496 /* We don't actually do anything for this yet. Just return after
3497 * validating the parameters and generating the required errors.
3502 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3507 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3508 const GLenum
*attachments
, GLint x
, GLint y
,
3509 GLsizei width
, GLsizei height
)
3511 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3512 x
, y
, width
, height
,
3513 "glInvalidateSubFramebuffer");
3517 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3518 const GLenum
*attachments
)
3520 /* The GL_ARB_invalidate_subdata spec says:
3524 * void InvalidateFramebuffer(enum target,
3525 * sizei numAttachments,
3526 * const enum *attachments);
3528 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3529 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3530 * <MAX_VIEWPORT_DIMS[1]> respectively."
3532 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3533 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3534 "glInvalidateFramebuffer");
3538 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3539 const GLenum
*attachments
)
3541 struct gl_framebuffer
*fb
;
3544 GET_CURRENT_CONTEXT(ctx
);
3546 fb
= get_framebuffer_target(ctx
, target
);
3548 _mesa_error(ctx
, GL_INVALID_ENUM
,
3549 "glDiscardFramebufferEXT(target %s)",
3550 _mesa_lookup_enum_by_nr(target
));
3554 if (numAttachments
< 0) {
3555 _mesa_error(ctx
, GL_INVALID_VALUE
,
3556 "glDiscardFramebufferEXT(numAttachments < 0)");
3560 for (i
= 0; i
< numAttachments
; i
++) {
3561 switch (attachments
[i
]) {
3565 if (_mesa_is_user_fbo(fb
))
3568 case GL_COLOR_ATTACHMENT0
:
3569 case GL_DEPTH_ATTACHMENT
:
3570 case GL_STENCIL_ATTACHMENT
:
3571 if (_mesa_is_winsys_fbo(fb
))
3579 if (ctx
->Driver
.DiscardFramebuffer
)
3580 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3585 _mesa_error(ctx
, GL_INVALID_ENUM
,
3586 "glDiscardFramebufferEXT(attachment %s)",
3587 _mesa_lookup_enum_by_nr(attachments
[i
]));