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"
56 * None of the GL_EXT_framebuffer_object functions are compiled into
63 * When glGenRender/FramebuffersEXT() is called we insert pointers to
64 * these placeholder objects into the hash table.
65 * Later, when the object ID is first bound, we replace the placeholder
66 * with the real frame/renderbuffer.
68 static struct gl_framebuffer DummyFramebuffer
;
69 static struct gl_renderbuffer DummyRenderbuffer
;
71 /* We bind this framebuffer when applications pass a NULL
72 * drawable/surface in make current. */
73 static struct gl_framebuffer IncompleteFramebuffer
;
77 delete_dummy_renderbuffer(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
)
83 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
90 _mesa_init_fbobjects(struct gl_context
*ctx
)
92 mtx_init(&DummyFramebuffer
.Mutex
, mtx_plain
);
93 mtx_init(&DummyRenderbuffer
.Mutex
, mtx_plain
);
94 mtx_init(&IncompleteFramebuffer
.Mutex
, mtx_plain
);
95 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
96 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
97 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
100 struct gl_framebuffer
*
101 _mesa_get_incomplete_framebuffer(void)
103 return &IncompleteFramebuffer
;
107 * Helper routine for getting a gl_renderbuffer.
109 struct gl_renderbuffer
*
110 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
112 struct gl_renderbuffer
*rb
;
117 rb
= (struct gl_renderbuffer
*)
118 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
124 * Helper routine for getting a gl_framebuffer.
126 struct gl_framebuffer
*
127 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
129 struct gl_framebuffer
*fb
;
134 fb
= (struct gl_framebuffer
*)
135 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
141 * Mark the given framebuffer as invalid. This will force the
142 * test for framebuffer completeness to be done before the framebuffer
146 invalidate_framebuffer(struct gl_framebuffer
*fb
)
148 fb
->_Status
= 0; /* "indeterminate" */
153 * Return the gl_framebuffer object which corresponds to the given
154 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
155 * Check support for GL_EXT_framebuffer_blit to determine if certain
157 * \return gl_framebuffer pointer or NULL if target is illegal
159 static struct gl_framebuffer
*
160 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
162 bool have_fb_blit
= _mesa_is_gles3(ctx
) || _mesa_is_desktop_gl(ctx
);
164 case GL_DRAW_FRAMEBUFFER
:
165 return have_fb_blit
? ctx
->DrawBuffer
: NULL
;
166 case GL_READ_FRAMEBUFFER
:
167 return have_fb_blit
? ctx
->ReadBuffer
: NULL
;
168 case GL_FRAMEBUFFER_EXT
:
169 return ctx
->DrawBuffer
;
177 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
178 * gl_renderbuffer_attachment object.
179 * This function is only used for user-created FB objects, not the
180 * default / window-system FB object.
181 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
182 * the depth buffer attachment point.
184 static struct gl_renderbuffer_attachment
*
185 get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
190 assert(_mesa_is_user_fbo(fb
));
192 switch (attachment
) {
193 case GL_COLOR_ATTACHMENT0_EXT
:
194 case GL_COLOR_ATTACHMENT1_EXT
:
195 case GL_COLOR_ATTACHMENT2_EXT
:
196 case GL_COLOR_ATTACHMENT3_EXT
:
197 case GL_COLOR_ATTACHMENT4_EXT
:
198 case GL_COLOR_ATTACHMENT5_EXT
:
199 case GL_COLOR_ATTACHMENT6_EXT
:
200 case GL_COLOR_ATTACHMENT7_EXT
:
201 case GL_COLOR_ATTACHMENT8_EXT
:
202 case GL_COLOR_ATTACHMENT9_EXT
:
203 case GL_COLOR_ATTACHMENT10_EXT
:
204 case GL_COLOR_ATTACHMENT11_EXT
:
205 case GL_COLOR_ATTACHMENT12_EXT
:
206 case GL_COLOR_ATTACHMENT13_EXT
:
207 case GL_COLOR_ATTACHMENT14_EXT
:
208 case GL_COLOR_ATTACHMENT15_EXT
:
209 /* Only OpenGL ES 1.x forbids color attachments other than
210 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
213 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
214 if (i
>= ctx
->Const
.MaxColorAttachments
215 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
218 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
219 case GL_DEPTH_STENCIL_ATTACHMENT
:
220 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
223 case GL_DEPTH_ATTACHMENT_EXT
:
224 return &fb
->Attachment
[BUFFER_DEPTH
];
225 case GL_STENCIL_ATTACHMENT_EXT
:
226 return &fb
->Attachment
[BUFFER_STENCIL
];
234 * As above, but only used for getting attachments of the default /
235 * window-system framebuffer (not user-created framebuffer objects).
237 static struct gl_renderbuffer_attachment
*
238 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
241 assert(_mesa_is_winsys_fbo(fb
));
243 if (_mesa_is_gles3(ctx
)) {
244 assert(attachment
== GL_BACK
||
245 attachment
== GL_DEPTH
||
246 attachment
== GL_STENCIL
);
247 switch (attachment
) {
249 /* Since there is no stereo rendering in ES 3.0, only return the
252 if (ctx
->DrawBuffer
->Visual
.doubleBufferMode
)
253 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
254 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
256 return &fb
->Attachment
[BUFFER_DEPTH
];
258 return &fb
->Attachment
[BUFFER_STENCIL
];
262 switch (attachment
) {
264 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
266 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
268 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
270 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
272 if (fb
->Visual
.numAuxBuffers
== 1) {
273 return &fb
->Attachment
[BUFFER_AUX0
];
277 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
279 * "If the default framebuffer is bound to target, then attachment must
280 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
281 * identifying a color buffer; DEPTH, identifying the depth buffer; or
282 * STENCIL, identifying the stencil buffer."
284 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
285 * language. However, revision #33 of the ARB_framebuffer_object spec
288 * "If the default framebuffer is bound to <target>, then <attachment>
289 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
290 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
291 * depth buffer, or the stencil buffer, and <pname> may be
292 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
293 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
295 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
296 * from glext.h, so shipping apps should not use those values.
298 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
299 * support queries of the window system FBO.
302 return &fb
->Attachment
[BUFFER_DEPTH
];
304 return &fb
->Attachment
[BUFFER_STENCIL
];
313 * Remove any texture or renderbuffer attached to the given attachment
314 * point. Update reference counts, etc.
317 remove_attachment(struct gl_context
*ctx
,
318 struct gl_renderbuffer_attachment
*att
)
320 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
322 /* tell driver that we're done rendering to this texture. */
323 if (rb
&& rb
->NeedsFinishRenderTexture
)
324 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
326 if (att
->Type
== GL_TEXTURE
) {
327 ASSERT(att
->Texture
);
328 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
329 ASSERT(!att
->Texture
);
331 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
332 ASSERT(!att
->Texture
);
333 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
334 ASSERT(!att
->Renderbuffer
);
337 att
->Complete
= GL_TRUE
;
341 * Verify a couple error conditions that will lead to an incomplete FBO and
342 * may cause problems for the driver's RenderTexture path.
345 driver_RenderTexture_is_safe(const struct gl_renderbuffer_attachment
*att
)
347 const struct gl_texture_image
*const texImage
=
348 att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
350 if (texImage
->Width
== 0 || texImage
->Height
== 0 || texImage
->Depth
== 0)
353 if ((texImage
->TexObject
->Target
== GL_TEXTURE_1D_ARRAY
354 && att
->Zoffset
>= texImage
->Height
)
355 || (texImage
->TexObject
->Target
!= GL_TEXTURE_1D_ARRAY
356 && att
->Zoffset
>= texImage
->Depth
))
363 * Create a renderbuffer which will be set up by the driver to wrap the
364 * texture image slice.
366 * By using a gl_renderbuffer (like user-allocated renderbuffers), drivers get
367 * to share most of their framebuffer rendering code between winsys,
368 * renderbuffer, and texture attachments.
370 * The allocated renderbuffer uses a non-zero Name so that drivers can check
371 * it for determining vertical orientation, but we use ~0 to make it fairly
372 * unambiguous with actual user (non-texture) renderbuffers.
375 _mesa_update_texture_renderbuffer(struct gl_context
*ctx
,
376 struct gl_framebuffer
*fb
,
377 struct gl_renderbuffer_attachment
*att
)
379 struct gl_texture_image
*texImage
;
380 struct gl_renderbuffer
*rb
;
382 texImage
= att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
384 rb
= att
->Renderbuffer
;
386 rb
= ctx
->Driver
.NewRenderbuffer(ctx
, ~0);
388 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glFramebufferTexture()");
391 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
393 /* This can't get called on a texture renderbuffer, so set it to NULL
394 * for clarity compared to user renderbuffers.
396 rb
->AllocStorage
= NULL
;
398 rb
->NeedsFinishRenderTexture
= ctx
->Driver
.FinishRenderTexture
!= NULL
;
404 rb
->_BaseFormat
= texImage
->_BaseFormat
;
405 rb
->Format
= texImage
->TexFormat
;
406 rb
->InternalFormat
= texImage
->InternalFormat
;
407 rb
->Width
= texImage
->Width2
;
408 rb
->Height
= texImage
->Height2
;
409 rb
->Depth
= texImage
->Depth2
;
410 rb
->NumSamples
= texImage
->NumSamples
;
411 rb
->TexImage
= texImage
;
413 if (driver_RenderTexture_is_safe(att
))
414 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
418 * Bind a texture object to an attachment point.
419 * The previous binding, if any, will be removed first.
422 set_texture_attachment(struct gl_context
*ctx
,
423 struct gl_framebuffer
*fb
,
424 struct gl_renderbuffer_attachment
*att
,
425 struct gl_texture_object
*texObj
,
426 GLenum texTarget
, GLuint level
, GLuint zoffset
,
429 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
431 if (rb
&& rb
->NeedsFinishRenderTexture
)
432 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
434 if (att
->Texture
== texObj
) {
435 /* re-attaching same texture */
436 ASSERT(att
->Type
== GL_TEXTURE
);
440 remove_attachment(ctx
, att
);
441 att
->Type
= GL_TEXTURE
;
442 assert(!att
->Texture
);
443 _mesa_reference_texobj(&att
->Texture
, texObj
);
445 invalidate_framebuffer(fb
);
447 /* always update these fields */
448 att
->TextureLevel
= level
;
449 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
450 att
->Zoffset
= zoffset
;
451 att
->Layered
= layered
;
452 att
->Complete
= GL_FALSE
;
454 _mesa_update_texture_renderbuffer(ctx
, fb
, att
);
459 * Bind a renderbuffer to an attachment point.
460 * The previous binding, if any, will be removed first.
463 set_renderbuffer_attachment(struct gl_context
*ctx
,
464 struct gl_renderbuffer_attachment
*att
,
465 struct gl_renderbuffer
*rb
)
467 /* XXX check if re-doing same attachment, exit early */
468 remove_attachment(ctx
, att
);
469 att
->Type
= GL_RENDERBUFFER_EXT
;
470 att
->Texture
= NULL
; /* just to be safe */
471 att
->Complete
= GL_FALSE
;
472 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
477 * Fallback for ctx->Driver.FramebufferRenderbuffer()
478 * Attach a renderbuffer object to a framebuffer object.
481 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
482 struct gl_framebuffer
*fb
,
483 GLenum attachment
, struct gl_renderbuffer
*rb
)
485 struct gl_renderbuffer_attachment
*att
;
487 mtx_lock(&fb
->Mutex
);
489 att
= get_attachment(ctx
, fb
, attachment
);
492 set_renderbuffer_attachment(ctx
, att
, rb
);
493 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
494 /* do stencil attachment here (depth already done above) */
495 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
497 set_renderbuffer_attachment(ctx
, att
, rb
);
499 rb
->AttachedAnytime
= GL_TRUE
;
502 remove_attachment(ctx
, att
);
503 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
504 /* detach stencil (depth was detached above) */
505 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
507 remove_attachment(ctx
, att
);
511 invalidate_framebuffer(fb
);
513 mtx_unlock(&fb
->Mutex
);
518 * Fallback for ctx->Driver.ValidateFramebuffer()
519 * Check if the renderbuffer's formats are supported by the software
521 * Drivers should probably override this.
524 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
527 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
528 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
530 switch (rb
->_BaseFormat
) {
532 case GL_LUMINANCE_ALPHA
:
537 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
541 switch (rb
->Format
) {
542 /* XXX This list is likely incomplete. */
543 case MESA_FORMAT_R9G9B9E5_FLOAT
:
544 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
547 /* render buffer format is supported by software rendering */
556 * Return true if the framebuffer has a combined depth/stencil
557 * renderbuffer attached.
560 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
562 const struct gl_renderbuffer_attachment
*depth
=
563 &fb
->Attachment
[BUFFER_DEPTH
];
564 const struct gl_renderbuffer_attachment
*stencil
=
565 &fb
->Attachment
[BUFFER_STENCIL
];
567 if (depth
->Type
== stencil
->Type
) {
568 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
569 depth
->Renderbuffer
== stencil
->Renderbuffer
)
572 if (depth
->Type
== GL_TEXTURE
&&
573 depth
->Texture
== stencil
->Texture
)
585 att_incomplete(const char *msg
)
587 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
588 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
597 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
599 static GLuint msg_id
;
601 _mesa_gl_debug(ctx
, &msg_id
,
602 MESA_DEBUG_TYPE_OTHER
,
603 MESA_DEBUG_SEVERITY_MEDIUM
,
604 "FBO incomplete: %s [%d]\n", msg
, index
);
606 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
607 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
613 * Is the given base format a legal format for a color renderbuffer?
616 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
618 switch (baseFormat
) {
623 case GL_LUMINANCE_ALPHA
:
626 return ctx
->API
== API_OPENGL_COMPAT
&&
627 ctx
->Extensions
.ARB_framebuffer_object
;
630 return ctx
->Extensions
.ARB_texture_rg
;
638 * Is the given base format a legal format for a color renderbuffer?
641 is_format_color_renderable(const struct gl_context
*ctx
, mesa_format format
,
642 GLenum internalFormat
)
644 const GLenum baseFormat
=
645 _mesa_get_format_base_format(format
);
648 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
649 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
653 /* Reject additional cases for GLES */
654 switch (internalFormat
) {
674 if (format
== MESA_FORMAT_B10G10R10A2_UNORM
&&
675 internalFormat
!= GL_RGB10_A2
) {
684 * Is the given base format a legal format for a depth/stencil renderbuffer?
687 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
689 switch (baseFormat
) {
690 case GL_DEPTH_COMPONENT
:
691 case GL_DEPTH_STENCIL_EXT
:
700 * Test if an attachment point is complete and update its Complete field.
701 * \param format if GL_COLOR, this is a color attachment point,
702 * if GL_DEPTH, this is a depth component attachment point,
703 * if GL_STENCIL, this is a stencil component attachment point.
706 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
707 struct gl_renderbuffer_attachment
*att
)
709 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
711 /* assume complete */
712 att
->Complete
= GL_TRUE
;
714 /* Look for reasons why the attachment might be incomplete */
715 if (att
->Type
== GL_TEXTURE
) {
716 const struct gl_texture_object
*texObj
= att
->Texture
;
717 struct gl_texture_image
*texImage
;
721 att_incomplete("no texobj");
722 att
->Complete
= GL_FALSE
;
726 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
728 att_incomplete("no teximage");
729 att
->Complete
= GL_FALSE
;
732 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
733 att_incomplete("teximage width/height=0");
734 att
->Complete
= GL_FALSE
;
738 switch (texObj
->Target
) {
740 if (att
->Zoffset
>= texImage
->Depth
) {
741 att_incomplete("bad z offset");
742 att
->Complete
= GL_FALSE
;
746 case GL_TEXTURE_1D_ARRAY
:
747 if (att
->Zoffset
>= texImage
->Height
) {
748 att_incomplete("bad 1D-array layer");
749 att
->Complete
= GL_FALSE
;
753 case GL_TEXTURE_2D_ARRAY
:
754 if (att
->Zoffset
>= texImage
->Depth
) {
755 att_incomplete("bad 2D-array layer");
756 att
->Complete
= GL_FALSE
;
760 case GL_TEXTURE_CUBE_MAP_ARRAY
:
761 if (att
->Zoffset
>= texImage
->Depth
) {
762 att_incomplete("bad cube-array layer");
763 att
->Complete
= GL_FALSE
;
769 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
771 if (format
== GL_COLOR
) {
772 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
773 att_incomplete("bad format");
774 att
->Complete
= GL_FALSE
;
777 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
778 att_incomplete("compressed internalformat");
779 att
->Complete
= GL_FALSE
;
783 else if (format
== GL_DEPTH
) {
784 if (baseFormat
== GL_DEPTH_COMPONENT
) {
787 else if (ctx
->Extensions
.ARB_depth_texture
&&
788 baseFormat
== GL_DEPTH_STENCIL
) {
792 att
->Complete
= GL_FALSE
;
793 att_incomplete("bad depth format");
798 ASSERT(format
== GL_STENCIL
);
799 if (ctx
->Extensions
.ARB_depth_texture
&&
800 baseFormat
== GL_DEPTH_STENCIL
) {
804 /* no such thing as stencil-only textures */
805 att_incomplete("illegal stencil texture");
806 att
->Complete
= GL_FALSE
;
811 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
812 const GLenum baseFormat
=
813 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
815 ASSERT(att
->Renderbuffer
);
816 if (!att
->Renderbuffer
->InternalFormat
||
817 att
->Renderbuffer
->Width
< 1 ||
818 att
->Renderbuffer
->Height
< 1) {
819 att_incomplete("0x0 renderbuffer");
820 att
->Complete
= GL_FALSE
;
823 if (format
== GL_COLOR
) {
824 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
825 att_incomplete("bad renderbuffer color format");
826 att
->Complete
= GL_FALSE
;
830 else if (format
== GL_DEPTH
) {
831 if (baseFormat
== GL_DEPTH_COMPONENT
) {
834 else if (baseFormat
== GL_DEPTH_STENCIL
) {
838 att_incomplete("bad renderbuffer depth format");
839 att
->Complete
= GL_FALSE
;
844 assert(format
== GL_STENCIL
);
845 if (baseFormat
== GL_STENCIL_INDEX
||
846 baseFormat
== GL_DEPTH_STENCIL
) {
850 att
->Complete
= GL_FALSE
;
851 att_incomplete("bad renderbuffer stencil format");
857 ASSERT(att
->Type
== GL_NONE
);
865 * Test if the given framebuffer object is complete and update its
866 * Status field with the results.
867 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
868 * driver to make hardware-specific validation/completeness checks.
869 * Also update the framebuffer's Width and Height fields if the
870 * framebuffer is complete.
873 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
874 struct gl_framebuffer
*fb
)
877 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
878 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
879 GLint numSamples
= -1;
880 GLint fixedSampleLocations
= -1;
883 /* Covers max_layer_count, is_layered, and layer_tex_target */
884 bool layer_info_valid
= false;
885 GLuint max_layer_count
= 0, att_layer_count
;
886 bool is_layered
= false;
887 GLenum layer_tex_target
= 0;
889 assert(_mesa_is_user_fbo(fb
));
891 /* we're changing framebuffer fields here */
892 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
897 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
898 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
900 /* Start at -2 to more easily loop over all attachment points.
905 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
906 struct gl_renderbuffer_attachment
*att
;
908 mesa_format attFormat
;
909 GLenum att_tex_target
= GL_NONE
;
912 * XXX for ARB_fbo, only check color buffers that are named by
913 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
916 /* check for attachment completeness
919 att
= &fb
->Attachment
[BUFFER_DEPTH
];
920 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
921 if (!att
->Complete
) {
922 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
923 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
928 att
= &fb
->Attachment
[BUFFER_STENCIL
];
929 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
930 if (!att
->Complete
) {
931 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
932 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
937 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
938 test_attachment_completeness(ctx
, GL_COLOR
, att
);
939 if (!att
->Complete
) {
940 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
941 fbo_incomplete(ctx
, "color attachment incomplete", i
);
946 /* get width, height, format of the renderbuffer/texture
948 if (att
->Type
== GL_TEXTURE
) {
949 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
950 att_tex_target
= att
->Texture
->Target
;
951 minWidth
= MIN2(minWidth
, texImg
->Width
);
952 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
953 minHeight
= MIN2(minHeight
, texImg
->Height
);
954 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
955 f
= texImg
->_BaseFormat
;
956 attFormat
= texImg
->TexFormat
;
959 if (!is_format_color_renderable(ctx
, attFormat
,
960 texImg
->InternalFormat
) &&
961 !is_legal_depth_format(ctx
, f
)) {
962 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
963 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
968 numSamples
= texImg
->NumSamples
;
969 else if (numSamples
!= texImg
->NumSamples
) {
970 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
971 fbo_incomplete(ctx
, "inconsistent sample count", -1);
975 if (fixedSampleLocations
< 0)
976 fixedSampleLocations
= texImg
->FixedSampleLocations
;
977 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
978 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
979 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
983 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
984 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
985 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
986 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
987 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
988 f
= att
->Renderbuffer
->InternalFormat
;
989 attFormat
= att
->Renderbuffer
->Format
;
993 numSamples
= att
->Renderbuffer
->NumSamples
;
994 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
995 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
996 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1000 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1001 if (fixedSampleLocations
< 0)
1002 fixedSampleLocations
= GL_TRUE
;
1003 else if (fixedSampleLocations
!= GL_TRUE
) {
1004 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1005 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1010 assert(att
->Type
== GL_NONE
);
1014 /* check if integer color */
1015 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1017 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1019 GLenum type
= _mesa_get_format_datatype(attFormat
);
1021 fb
->_AllColorBuffersFixedPoint
=
1022 fb
->_AllColorBuffersFixedPoint
&&
1023 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1025 fb
->_HasSNormOrFloatColorBuffer
=
1026 fb
->_HasSNormOrFloatColorBuffer
||
1027 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1030 /* Error-check width, height, format */
1031 if (numImages
== 1) {
1038 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1039 /* check that width, height, format are same */
1040 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1041 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1042 fbo_incomplete(ctx
, "width or height mismatch", -1);
1045 /* check that all color buffers are the same format */
1046 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1047 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1048 fbo_incomplete(ctx
, "format mismatch", -1);
1054 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1056 if (att
->Type
== GL_RENDERBUFFER
&&
1057 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1058 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1059 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1063 /* Check that layered rendering is consistent. */
1065 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1066 att_layer_count
= 6;
1067 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1068 att_layer_count
= att
->Renderbuffer
->Height
;
1070 att_layer_count
= att
->Renderbuffer
->Depth
;
1072 att_layer_count
= 0;
1074 if (!layer_info_valid
) {
1075 is_layered
= att
->Layered
;
1076 max_layer_count
= att_layer_count
;
1077 layer_tex_target
= att_tex_target
;
1078 layer_info_valid
= true;
1079 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1080 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1081 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1083 } else if (is_layered
!= att
->Layered
) {
1084 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1086 "framebuffer attachment layer mode is inconsistent",
1089 } else if (att_layer_count
> max_layer_count
) {
1090 max_layer_count
= att_layer_count
;
1094 fb
->MaxNumLayers
= max_layer_count
;
1096 if (numImages
== 0) {
1097 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1098 fbo_incomplete(ctx
, "no attachments", -1);
1102 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1103 /* Check that all DrawBuffers are present */
1104 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1105 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1106 const struct gl_renderbuffer_attachment
*att
1107 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1109 if (att
->Type
== GL_NONE
) {
1110 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1111 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1117 /* Check that the ReadBuffer is present */
1118 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1119 const struct gl_renderbuffer_attachment
*att
1120 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1122 if (att
->Type
== GL_NONE
) {
1123 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1124 fbo_incomplete(ctx
, "missing readbuffer", -1);
1130 /* Provisionally set status = COMPLETE ... */
1131 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1133 /* ... but the driver may say the FB is incomplete.
1134 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1137 if (ctx
->Driver
.ValidateFramebuffer
) {
1138 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1139 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1140 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1144 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1146 * Note that if ARB_framebuffer_object is supported and the attached
1147 * renderbuffers/textures are different sizes, the framebuffer
1148 * width/height will be set to the smallest width/height.
1150 fb
->Width
= minWidth
;
1151 fb
->Height
= minHeight
;
1153 /* finally, update the visual info for the framebuffer */
1154 _mesa_update_framebuffer_visual(ctx
, fb
);
1159 GLboolean GLAPIENTRY
1160 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1162 GET_CURRENT_CONTEXT(ctx
);
1163 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1165 struct gl_renderbuffer
*rb
=
1166 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1167 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1175 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1177 struct gl_renderbuffer
*newRb
;
1178 GET_CURRENT_CONTEXT(ctx
);
1180 if (target
!= GL_RENDERBUFFER_EXT
) {
1181 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1185 /* No need to flush here since the render buffer binding has no
1186 * effect on rendering state.
1190 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1191 if (newRb
== &DummyRenderbuffer
) {
1192 /* ID was reserved, but no real renderbuffer object made yet */
1195 else if (!newRb
&& !allow_user_names
) {
1196 /* All RB IDs must be Gen'd */
1197 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1202 /* create new renderbuffer object */
1203 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1205 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1208 ASSERT(newRb
->AllocStorage
);
1209 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1210 newRb
->RefCount
= 1; /* referenced by hash table */
1217 ASSERT(newRb
!= &DummyRenderbuffer
);
1219 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1223 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1225 GET_CURRENT_CONTEXT(ctx
);
1227 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1228 * entry point, but they allow the use of user-generated names.
1230 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1234 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1236 /* This function should not be in the dispatch table for core profile /
1237 * OpenGL 3.1, so execution should never get here in those cases -- no
1238 * need for an explicit test.
1240 bind_renderbuffer(target
, renderbuffer
, true);
1245 * Remove the specified renderbuffer or texture from any attachment point in
1249 * \c true if the renderbuffer was detached from an attachment point. \c
1253 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1254 struct gl_framebuffer
*fb
,
1258 bool progress
= false;
1260 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1261 if (fb
->Attachment
[i
].Texture
== att
1262 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1263 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1268 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1269 * Completeness," of the OpenGL 3.1 spec says:
1271 * "Performing any of the following actions may change whether the
1272 * framebuffer is considered complete or incomplete:
1276 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1277 * containing an image that is attached to a framebuffer object
1278 * that is bound to the framebuffer."
1281 invalidate_framebuffer(fb
);
1288 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1291 GET_CURRENT_CONTEXT(ctx
);
1293 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1295 for (i
= 0; i
< n
; i
++) {
1296 if (renderbuffers
[i
] > 0) {
1297 struct gl_renderbuffer
*rb
;
1298 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1300 /* check if deleting currently bound renderbuffer object */
1301 if (rb
== ctx
->CurrentRenderbuffer
) {
1303 ASSERT(rb
->RefCount
>= 2);
1304 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1307 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1308 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1309 * of the OpenGL 3.1 spec says:
1311 * "If a renderbuffer object is deleted while its image is
1312 * attached to one or more attachment points in the currently
1313 * bound framebuffer, then it is as if FramebufferRenderbuffer
1314 * had been called, with a renderbuffer of 0, for each
1315 * attachment point to which this image was attached in the
1316 * currently bound framebuffer. In other words, this
1317 * renderbuffer image is first detached from all attachment
1318 * points in the currently bound framebuffer. Note that the
1319 * renderbuffer image is specifically not detached from any
1320 * non-bound framebuffers. Detaching the image from any
1321 * non-bound framebuffers is the responsibility of the
1324 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1325 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1327 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1328 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1329 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1332 /* Remove from hash table immediately, to free the ID.
1333 * But the object will not be freed until it's no longer
1334 * referenced anywhere else.
1336 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1338 if (rb
!= &DummyRenderbuffer
) {
1339 /* no longer referenced by hash table */
1340 _mesa_reference_renderbuffer(&rb
, NULL
);
1349 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1351 GET_CURRENT_CONTEXT(ctx
);
1356 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1363 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1365 for (i
= 0; i
< n
; i
++) {
1366 GLuint name
= first
+ i
;
1367 renderbuffers
[i
] = name
;
1368 /* insert dummy placeholder into hash table */
1369 mtx_lock(&ctx
->Shared
->Mutex
);
1370 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1371 mtx_unlock(&ctx
->Shared
->Mutex
);
1377 * Given an internal format token for a render buffer, return the
1378 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1379 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1380 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1382 * This is similar to _mesa_base_tex_format() but the set of valid
1383 * internal formats is different.
1385 * Note that even if a format is determined to be legal here, validation
1386 * of the FBO may fail if the format is not supported by the driver/GPU.
1388 * \param internalFormat as passed to glRenderbufferStorage()
1389 * \return the base internal format, or 0 if internalFormat is illegal
1392 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1395 * Notes: some formats such as alpha, luminance, etc. were added
1396 * with GL_ARB_framebuffer_object.
1398 switch (internalFormat
) {
1404 return (ctx
->API
== API_OPENGL_COMPAT
&&
1405 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1409 case GL_LUMINANCE12
:
1410 case GL_LUMINANCE16
:
1411 return (ctx
->API
== API_OPENGL_COMPAT
&&
1412 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1413 case GL_LUMINANCE_ALPHA
:
1414 case GL_LUMINANCE4_ALPHA4
:
1415 case GL_LUMINANCE6_ALPHA2
:
1416 case GL_LUMINANCE8_ALPHA8
:
1417 case GL_LUMINANCE12_ALPHA4
:
1418 case GL_LUMINANCE12_ALPHA12
:
1419 case GL_LUMINANCE16_ALPHA16
:
1420 return (ctx
->API
== API_OPENGL_COMPAT
&&
1421 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1425 case GL_INTENSITY12
:
1426 case GL_INTENSITY16
:
1427 return (ctx
->API
== API_OPENGL_COMPAT
&&
1428 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1438 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1440 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1449 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1451 case GL_SRGB8_ALPHA8_EXT
:
1452 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1453 case GL_STENCIL_INDEX
:
1454 case GL_STENCIL_INDEX1_EXT
:
1455 case GL_STENCIL_INDEX4_EXT
:
1456 case GL_STENCIL_INDEX16_EXT
:
1457 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1458 * OpenGL ES, but Mesa does not currently support them.
1460 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1461 case GL_STENCIL_INDEX8_EXT
:
1462 return GL_STENCIL_INDEX
;
1463 case GL_DEPTH_COMPONENT
:
1464 case GL_DEPTH_COMPONENT32
:
1465 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1466 case GL_DEPTH_COMPONENT16
:
1467 case GL_DEPTH_COMPONENT24
:
1468 return GL_DEPTH_COMPONENT
;
1469 case GL_DEPTH_STENCIL
:
1470 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1471 case GL_DEPTH24_STENCIL8
:
1472 return GL_DEPTH_STENCIL
;
1473 case GL_DEPTH_COMPONENT32F
:
1474 return ctx
->Version
>= 30
1475 || (ctx
->API
== API_OPENGL_COMPAT
&&
1476 ctx
->Extensions
.ARB_depth_buffer_float
)
1477 ? GL_DEPTH_COMPONENT
: 0;
1478 case GL_DEPTH32F_STENCIL8
:
1479 return ctx
->Version
>= 30
1480 || (ctx
->API
== API_OPENGL_COMPAT
&&
1481 ctx
->Extensions
.ARB_depth_buffer_float
)
1482 ? GL_DEPTH_STENCIL
: 0;
1485 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1488 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1492 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1495 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1497 /* signed normalized texture formats */
1501 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1506 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1510 case GL_RGB16_SNORM
:
1511 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1514 case GL_RGBA8_SNORM
:
1515 case GL_RGBA16_SNORM
:
1516 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1518 case GL_ALPHA_SNORM
:
1519 case GL_ALPHA8_SNORM
:
1520 case GL_ALPHA16_SNORM
:
1521 return ctx
->API
== API_OPENGL_COMPAT
&&
1522 ctx
->Extensions
.EXT_texture_snorm
&&
1523 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1524 case GL_LUMINANCE_SNORM
:
1525 case GL_LUMINANCE8_SNORM
:
1526 case GL_LUMINANCE16_SNORM
:
1527 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1529 case GL_LUMINANCE_ALPHA_SNORM
:
1530 case GL_LUMINANCE8_ALPHA8_SNORM
:
1531 case GL_LUMINANCE16_ALPHA16_SNORM
:
1532 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1533 ? GL_LUMINANCE_ALPHA
: 0;
1534 case GL_INTENSITY_SNORM
:
1535 case GL_INTENSITY8_SNORM
:
1536 case GL_INTENSITY16_SNORM
:
1537 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1542 return ((_mesa_is_desktop_gl(ctx
) &&
1543 ctx
->Extensions
.ARB_texture_rg
&&
1544 ctx
->Extensions
.ARB_texture_float
) ||
1545 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1549 return ((_mesa_is_desktop_gl(ctx
) &&
1550 ctx
->Extensions
.ARB_texture_rg
&&
1551 ctx
->Extensions
.ARB_texture_float
) ||
1552 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1556 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1560 return ((_mesa_is_desktop_gl(ctx
) &&
1561 ctx
->Extensions
.ARB_texture_float
) ||
1562 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1564 case GL_ALPHA16F_ARB
:
1565 case GL_ALPHA32F_ARB
:
1566 return ctx
->API
== API_OPENGL_COMPAT
&&
1567 ctx
->Extensions
.ARB_texture_float
&&
1568 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1569 case GL_LUMINANCE16F_ARB
:
1570 case GL_LUMINANCE32F_ARB
:
1571 return ctx
->API
== API_OPENGL_COMPAT
&&
1572 ctx
->Extensions
.ARB_texture_float
&&
1573 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1574 case GL_LUMINANCE_ALPHA16F_ARB
:
1575 case GL_LUMINANCE_ALPHA32F_ARB
:
1576 return ctx
->API
== API_OPENGL_COMPAT
&&
1577 ctx
->Extensions
.ARB_texture_float
&&
1578 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1579 case GL_INTENSITY16F_ARB
:
1580 case GL_INTENSITY32F_ARB
:
1581 return ctx
->API
== API_OPENGL_COMPAT
&&
1582 ctx
->Extensions
.ARB_texture_float
&&
1583 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1584 case GL_R11F_G11F_B10F
:
1585 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1586 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1589 case GL_RGBA8UI_EXT
:
1590 case GL_RGBA16UI_EXT
:
1591 case GL_RGBA32UI_EXT
:
1593 case GL_RGBA16I_EXT
:
1594 case GL_RGBA32I_EXT
:
1595 return ctx
->Version
>= 30
1596 || (_mesa_is_desktop_gl(ctx
) &&
1597 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1600 case GL_RGB16UI_EXT
:
1601 case GL_RGB32UI_EXT
:
1605 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1613 return ctx
->Version
>= 30
1614 || (_mesa_is_desktop_gl(ctx
) &&
1615 ctx
->Extensions
.ARB_texture_rg
&&
1616 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1624 return ctx
->Version
>= 30
1625 || (_mesa_is_desktop_gl(ctx
) &&
1626 ctx
->Extensions
.ARB_texture_rg
&&
1627 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1629 case GL_INTENSITY8I_EXT
:
1630 case GL_INTENSITY8UI_EXT
:
1631 case GL_INTENSITY16I_EXT
:
1632 case GL_INTENSITY16UI_EXT
:
1633 case GL_INTENSITY32I_EXT
:
1634 case GL_INTENSITY32UI_EXT
:
1635 return ctx
->API
== API_OPENGL_COMPAT
&&
1636 ctx
->Extensions
.EXT_texture_integer
&&
1637 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1639 case GL_LUMINANCE8I_EXT
:
1640 case GL_LUMINANCE8UI_EXT
:
1641 case GL_LUMINANCE16I_EXT
:
1642 case GL_LUMINANCE16UI_EXT
:
1643 case GL_LUMINANCE32I_EXT
:
1644 case GL_LUMINANCE32UI_EXT
:
1645 return ctx
->API
== API_OPENGL_COMPAT
&&
1646 ctx
->Extensions
.EXT_texture_integer
&&
1647 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1649 case GL_LUMINANCE_ALPHA8I_EXT
:
1650 case GL_LUMINANCE_ALPHA8UI_EXT
:
1651 case GL_LUMINANCE_ALPHA16I_EXT
:
1652 case GL_LUMINANCE_ALPHA16UI_EXT
:
1653 case GL_LUMINANCE_ALPHA32I_EXT
:
1654 case GL_LUMINANCE_ALPHA32UI_EXT
:
1655 return ctx
->API
== API_OPENGL_COMPAT
&&
1656 ctx
->Extensions
.EXT_texture_integer
&&
1657 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1659 case GL_ALPHA8I_EXT
:
1660 case GL_ALPHA8UI_EXT
:
1661 case GL_ALPHA16I_EXT
:
1662 case GL_ALPHA16UI_EXT
:
1663 case GL_ALPHA32I_EXT
:
1664 case GL_ALPHA32UI_EXT
:
1665 return ctx
->API
== API_OPENGL_COMPAT
&&
1666 ctx
->Extensions
.EXT_texture_integer
&&
1667 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1670 return (_mesa_is_desktop_gl(ctx
) &&
1671 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1672 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1675 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1684 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1687 invalidate_rb(GLuint key
, void *data
, void *userData
)
1689 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1690 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1692 /* If this is a user-created FBO */
1693 if (_mesa_is_user_fbo(fb
)) {
1695 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1696 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1697 if (att
->Type
== GL_RENDERBUFFER
&&
1698 att
->Renderbuffer
== rb
) {
1699 /* Mark fb status as indeterminate to force re-validation */
1708 /** sentinal value, see below */
1709 #define NO_SAMPLES 1000
1713 * Helper function used by _mesa_RenderbufferStorage() and
1714 * _mesa_RenderbufferStorageMultisample().
1715 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1718 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1719 GLsizei width
, GLsizei height
, GLsizei samples
)
1721 const char *func
= samples
== NO_SAMPLES
?
1722 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1723 struct gl_renderbuffer
*rb
;
1725 GLenum sample_count_error
;
1726 GET_CURRENT_CONTEXT(ctx
);
1728 if (MESA_VERBOSE
& VERBOSE_API
) {
1729 if (samples
== NO_SAMPLES
)
1730 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1732 _mesa_lookup_enum_by_nr(target
),
1733 _mesa_lookup_enum_by_nr(internalFormat
),
1736 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1738 _mesa_lookup_enum_by_nr(target
),
1739 _mesa_lookup_enum_by_nr(internalFormat
),
1740 width
, height
, samples
);
1743 if (target
!= GL_RENDERBUFFER_EXT
) {
1744 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1748 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1749 if (baseFormat
== 0) {
1750 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1751 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1755 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1756 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1760 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1761 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1765 if (samples
== NO_SAMPLES
) {
1766 /* NumSamples == 0 indicates non-multisampling */
1770 /* check the sample count;
1771 * note: driver may choose to use more samples than what's requested
1773 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1774 internalFormat
, samples
);
1775 if (sample_count_error
!= GL_NO_ERROR
) {
1776 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1781 rb
= ctx
->CurrentRenderbuffer
;
1783 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1787 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1789 if (rb
->InternalFormat
== internalFormat
&&
1790 rb
->Width
== (GLuint
) width
&&
1791 rb
->Height
== (GLuint
) height
&&
1792 rb
->NumSamples
== samples
) {
1793 /* no change in allocation needed */
1797 /* These MUST get set by the AllocStorage func */
1798 rb
->Format
= MESA_FORMAT_NONE
;
1799 rb
->NumSamples
= samples
;
1801 /* Now allocate the storage */
1802 ASSERT(rb
->AllocStorage
);
1803 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1804 /* No error - check/set fields now */
1805 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1806 assert(rb
->Width
== (GLuint
) width
);
1807 assert(rb
->Height
== (GLuint
) height
);
1808 rb
->InternalFormat
= internalFormat
;
1809 rb
->_BaseFormat
= baseFormat
;
1810 assert(rb
->_BaseFormat
!= 0);
1813 /* Probably ran out of memory - clear the fields */
1816 rb
->Format
= MESA_FORMAT_NONE
;
1817 rb
->InternalFormat
= GL_NONE
;
1818 rb
->_BaseFormat
= GL_NONE
;
1822 /* Invalidate the framebuffers the renderbuffer is attached in. */
1823 if (rb
->AttachedAnytime
) {
1824 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1830 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1832 struct gl_renderbuffer
*rb
;
1833 GET_CURRENT_CONTEXT(ctx
);
1835 if (!ctx
->Extensions
.OES_EGL_image
) {
1836 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1837 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1841 if (target
!= GL_RENDERBUFFER
) {
1842 _mesa_error(ctx
, GL_INVALID_ENUM
,
1843 "EGLImageTargetRenderbufferStorageOES");
1847 rb
= ctx
->CurrentRenderbuffer
;
1849 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1850 "EGLImageTargetRenderbufferStorageOES");
1854 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1856 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1861 * Helper function for _mesa_GetRenderbufferParameteriv() and
1862 * _mesa_GetFramebufferAttachmentParameteriv()
1863 * We have to be careful to respect the base format. For example, if a
1864 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1865 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1866 * we need to return zero.
1869 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
1871 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1872 return _mesa_get_format_bits(format
, pname
);
1880 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1881 GLsizei width
, GLsizei height
)
1883 /* GL_ARB_fbo says calling this function is equivalent to calling
1884 * glRenderbufferStorageMultisample() with samples=0. We pass in
1885 * a token value here just for error reporting purposes.
1887 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1892 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1893 GLenum internalFormat
,
1894 GLsizei width
, GLsizei height
)
1896 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1901 * OpenGL ES version of glRenderBufferStorage.
1904 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1905 GLsizei width
, GLsizei height
)
1907 switch (internalFormat
) {
1909 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1910 /* choose a closest format */
1911 internalFormat
= GL_RGB5
;
1917 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1922 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1924 struct gl_renderbuffer
*rb
;
1925 GET_CURRENT_CONTEXT(ctx
);
1927 if (target
!= GL_RENDERBUFFER_EXT
) {
1928 _mesa_error(ctx
, GL_INVALID_ENUM
,
1929 "glGetRenderbufferParameterivEXT(target)");
1933 rb
= ctx
->CurrentRenderbuffer
;
1935 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1936 "glGetRenderbufferParameterivEXT");
1940 /* No need to flush here since we're just quering state which is
1941 * not effected by rendering.
1945 case GL_RENDERBUFFER_WIDTH_EXT
:
1946 *params
= rb
->Width
;
1948 case GL_RENDERBUFFER_HEIGHT_EXT
:
1949 *params
= rb
->Height
;
1951 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1952 *params
= rb
->InternalFormat
;
1954 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1955 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1956 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1957 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1958 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1959 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1960 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1962 case GL_RENDERBUFFER_SAMPLES
:
1963 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1964 || _mesa_is_gles3(ctx
)) {
1965 *params
= rb
->NumSamples
;
1970 _mesa_error(ctx
, GL_INVALID_ENUM
,
1971 "glGetRenderbufferParameterivEXT(target)");
1977 GLboolean GLAPIENTRY
1978 _mesa_IsFramebuffer(GLuint framebuffer
)
1980 GET_CURRENT_CONTEXT(ctx
);
1981 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1983 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1984 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1992 * Check if any of the attachments of the given framebuffer are textures
1993 * (render to texture). Call ctx->Driver.RenderTexture() for such
1997 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2000 ASSERT(ctx
->Driver
.RenderTexture
);
2002 if (_mesa_is_winsys_fbo(fb
))
2003 return; /* can't render to texture with winsys framebuffers */
2005 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2006 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2007 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2008 && driver_RenderTexture_is_safe(att
)) {
2009 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2016 * Examine all the framebuffer's attachments to see if any are textures.
2017 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2018 * notify the device driver that the texture image may have changed.
2021 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2023 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2024 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2027 if (ctx
->Driver
.FinishRenderTexture
) {
2029 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2030 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2031 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2032 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2033 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2041 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2043 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2044 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2045 GLboolean bindReadBuf
, bindDrawBuf
;
2046 GET_CURRENT_CONTEXT(ctx
);
2049 case GL_DRAW_FRAMEBUFFER_EXT
:
2050 bindDrawBuf
= GL_TRUE
;
2051 bindReadBuf
= GL_FALSE
;
2053 case GL_READ_FRAMEBUFFER_EXT
:
2054 bindDrawBuf
= GL_FALSE
;
2055 bindReadBuf
= GL_TRUE
;
2057 case GL_FRAMEBUFFER_EXT
:
2058 bindDrawBuf
= GL_TRUE
;
2059 bindReadBuf
= GL_TRUE
;
2062 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2067 /* Binding a user-created framebuffer object */
2068 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2069 if (newDrawFb
== &DummyFramebuffer
) {
2070 /* ID was reserved, but no real framebuffer object made yet */
2073 else if (!newDrawFb
&& !allow_user_names
) {
2074 /* All FBO IDs must be Gen'd */
2075 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2080 /* create new framebuffer object */
2081 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2083 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2086 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2088 newReadFb
= newDrawFb
;
2091 /* Binding the window system framebuffer (which was originally set
2092 * with MakeCurrent).
2094 newDrawFb
= ctx
->WinSysDrawBuffer
;
2095 newReadFb
= ctx
->WinSysReadBuffer
;
2099 ASSERT(newDrawFb
!= &DummyFramebuffer
);
2101 /* save pointers to current/old framebuffers */
2102 oldDrawFb
= ctx
->DrawBuffer
;
2103 oldReadFb
= ctx
->ReadBuffer
;
2105 /* check if really changing bindings */
2106 if (oldDrawFb
== newDrawFb
)
2107 bindDrawBuf
= GL_FALSE
;
2108 if (oldReadFb
== newReadFb
)
2109 bindReadBuf
= GL_FALSE
;
2112 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2114 * We also check if we're beginning and/or ending render-to-texture.
2115 * When a framebuffer with texture attachments is unbound, call
2116 * ctx->Driver.FinishRenderTexture().
2117 * When a framebuffer with texture attachments is bound, call
2118 * ctx->Driver.RenderTexture().
2120 * Note that if the ReadBuffer has texture attachments we don't consider
2121 * that a render-to-texture case.
2124 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2126 /* check if old readbuffer was render-to-texture */
2127 check_end_texture_render(ctx
, oldReadFb
);
2129 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2133 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2135 /* check if old framebuffer had any texture attachments */
2137 check_end_texture_render(ctx
, oldDrawFb
);
2139 /* check if newly bound framebuffer has any texture attachments */
2140 check_begin_texture_render(ctx
, newDrawFb
);
2142 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2145 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2146 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2151 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2153 GET_CURRENT_CONTEXT(ctx
);
2155 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2156 * point, but they allow the use of user-generated names.
2158 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2163 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2165 /* This function should not be in the dispatch table for core profile /
2166 * OpenGL 3.1, so execution should never get here in those cases -- no
2167 * need for an explicit test.
2169 bind_framebuffer(target
, framebuffer
, true);
2174 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2177 GET_CURRENT_CONTEXT(ctx
);
2179 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2181 for (i
= 0; i
< n
; i
++) {
2182 if (framebuffers
[i
] > 0) {
2183 struct gl_framebuffer
*fb
;
2184 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2186 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2188 /* check if deleting currently bound framebuffer object */
2189 if (fb
== ctx
->DrawBuffer
) {
2191 ASSERT(fb
->RefCount
>= 2);
2192 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2194 if (fb
== ctx
->ReadBuffer
) {
2196 ASSERT(fb
->RefCount
>= 2);
2197 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2200 /* remove from hash table immediately, to free the ID */
2201 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2203 if (fb
!= &DummyFramebuffer
) {
2204 /* But the object will not be freed until it's no longer
2205 * bound in any context.
2207 _mesa_reference_framebuffer(&fb
, NULL
);
2216 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2218 GET_CURRENT_CONTEXT(ctx
);
2223 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2230 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2232 for (i
= 0; i
< n
; i
++) {
2233 GLuint name
= first
+ i
;
2234 framebuffers
[i
] = name
;
2235 /* insert dummy placeholder into hash table */
2236 mtx_lock(&ctx
->Shared
->Mutex
);
2237 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2238 mtx_unlock(&ctx
->Shared
->Mutex
);
2244 _mesa_CheckFramebufferStatus(GLenum target
)
2246 struct gl_framebuffer
*buffer
;
2247 GET_CURRENT_CONTEXT(ctx
);
2249 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2251 if (MESA_VERBOSE
& VERBOSE_API
)
2252 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2253 _mesa_lookup_enum_by_nr(target
));
2255 buffer
= get_framebuffer_target(ctx
, target
);
2257 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2261 if (_mesa_is_winsys_fbo(buffer
)) {
2262 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2263 if (buffer
!= &IncompleteFramebuffer
) {
2264 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2266 return GL_FRAMEBUFFER_UNDEFINED
;
2270 /* No need to flush here */
2272 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2273 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2276 return buffer
->_Status
;
2281 * Replicate the src attachment point. Used by framebuffer_texture() when
2282 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2283 * GL_STENCIL_ATTACHMENT.
2286 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2287 gl_buffer_index dst
,
2288 gl_buffer_index src
)
2290 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2291 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2293 assert(src_att
->Texture
!= NULL
);
2294 assert(src_att
->Renderbuffer
!= NULL
);
2296 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2297 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2298 dst_att
->Type
= src_att
->Type
;
2299 dst_att
->Complete
= src_att
->Complete
;
2300 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2301 dst_att
->Zoffset
= src_att
->Zoffset
;
2306 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2307 * glFramebufferTextureLayerEXT().
2309 * \param textarget is the textarget that was passed to the
2310 * glFramebufferTexture...() function, or 0 if the corresponding function
2311 * doesn't have a textarget parameter.
2313 * \param layered is true if this function was called from
2314 * glFramebufferTexture(), false otherwise.
2317 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2318 GLenum attachment
, GLenum textarget
, GLuint texture
,
2319 GLint level
, GLint zoffset
, GLboolean layered
)
2321 struct gl_renderbuffer_attachment
*att
;
2322 struct gl_texture_object
*texObj
= NULL
;
2323 struct gl_framebuffer
*fb
;
2324 GLenum maxLevelsTarget
;
2326 fb
= get_framebuffer_target(ctx
, target
);
2328 _mesa_error(ctx
, GL_INVALID_ENUM
,
2329 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2333 /* check framebuffer binding */
2334 if (_mesa_is_winsys_fbo(fb
)) {
2335 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2336 "glFramebufferTexture%sEXT", caller
);
2340 /* The textarget, level, and zoffset parameters are only validated if
2341 * texture is non-zero.
2344 GLboolean err
= GL_TRUE
;
2346 texObj
= _mesa_lookup_texture(ctx
, texture
);
2347 if (texObj
!= NULL
) {
2348 if (textarget
== 0) {
2350 /* We're being called by glFramebufferTexture() and textarget
2353 switch (texObj
->Target
) {
2355 case GL_TEXTURE_1D_ARRAY_EXT
:
2356 case GL_TEXTURE_2D_ARRAY_EXT
:
2357 case GL_TEXTURE_CUBE_MAP
:
2358 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2359 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2364 case GL_TEXTURE_RECTANGLE
:
2365 case GL_TEXTURE_2D_MULTISAMPLE
:
2366 /* These texture types are valid to pass to
2367 * glFramebufferTexture(), but since they aren't layered, it
2368 * is equivalent to calling glFramebufferTexture{1D,2D}().
2372 textarget
= texObj
->Target
;
2379 /* We're being called by glFramebufferTextureLayer() and
2380 * textarget is not used. The only legal texture types for
2381 * that function are 3D and 1D/2D arrays textures.
2383 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2384 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2385 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2386 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2387 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2391 /* Make sure textarget is consistent with the texture's type */
2392 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2393 ? !_mesa_is_cube_face(textarget
)
2394 : (texObj
->Target
!= textarget
);
2398 /* can't render to a non-existant texture */
2399 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2400 "glFramebufferTexture%sEXT(non existant texture)",
2406 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2407 "glFramebufferTexture%sEXT(texture target mismatch)",
2412 if (texObj
->Target
== GL_TEXTURE_3D
) {
2413 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2414 if (zoffset
< 0 || zoffset
>= maxSize
) {
2415 _mesa_error(ctx
, GL_INVALID_VALUE
,
2416 "glFramebufferTexture%sEXT(zoffset)", caller
);
2420 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2421 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2422 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2423 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2425 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2426 _mesa_error(ctx
, GL_INVALID_VALUE
,
2427 "glFramebufferTexture%sEXT(layer)", caller
);
2432 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2434 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2435 _mesa_error(ctx
, GL_INVALID_VALUE
,
2436 "glFramebufferTexture%sEXT(level)", caller
);
2441 att
= get_attachment(ctx
, fb
, attachment
);
2443 _mesa_error(ctx
, GL_INVALID_ENUM
,
2444 "glFramebufferTexture%sEXT(attachment)", caller
);
2448 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2450 mtx_lock(&fb
->Mutex
);
2452 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2453 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2454 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2455 _mesa_tex_target_to_face(textarget
) ==
2456 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2457 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2458 /* The texture object is already attached to the stencil attachment
2459 * point. Don't create a new renderbuffer; just reuse the stencil
2460 * attachment's. This is required to prevent a GL error in
2461 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2463 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2465 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2466 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2467 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2468 _mesa_tex_target_to_face(textarget
) ==
2469 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2470 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2471 /* As above, but with depth and stencil transposed. */
2472 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2475 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2476 level
, zoffset
, layered
);
2477 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2478 /* Above we created a new renderbuffer and attached it to the
2479 * depth attachment point. Now attach it to the stencil attachment
2482 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2483 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2488 /* Set the render-to-texture flag. We'll check this flag in
2489 * glTexImage() and friends to determine if we need to revalidate
2490 * any FBOs that might be rendering into this texture.
2491 * This flag never gets cleared since it's non-trivial to determine
2492 * when all FBOs might be done rendering to this texture. That's OK
2493 * though since it's uncommon to render to a texture then repeatedly
2494 * call glTexImage() to change images in the texture.
2496 texObj
->_RenderToTexture
= GL_TRUE
;
2499 remove_attachment(ctx
, att
);
2500 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2501 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2502 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2506 invalidate_framebuffer(fb
);
2508 mtx_unlock(&fb
->Mutex
);
2513 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2514 GLenum textarget
, GLuint texture
, GLint level
)
2516 GET_CURRENT_CONTEXT(ctx
);
2521 switch (textarget
) {
2525 case GL_TEXTURE_1D_ARRAY
:
2526 error
= !ctx
->Extensions
.EXT_texture_array
;
2533 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2534 "glFramebufferTexture1DEXT(textarget=%s)",
2535 _mesa_lookup_enum_by_nr(textarget
));
2540 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2541 level
, 0, GL_FALSE
);
2546 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2547 GLenum textarget
, GLuint texture
, GLint level
)
2549 GET_CURRENT_CONTEXT(ctx
);
2554 switch (textarget
) {
2558 case GL_TEXTURE_RECTANGLE
:
2559 error
= _mesa_is_gles(ctx
)
2560 || !ctx
->Extensions
.NV_texture_rectangle
;
2562 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2563 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2564 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2565 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2566 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2567 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2568 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2570 case GL_TEXTURE_2D_ARRAY
:
2571 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2572 || !ctx
->Extensions
.EXT_texture_array
;
2574 case GL_TEXTURE_2D_MULTISAMPLE
:
2575 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2576 error
= _mesa_is_gles(ctx
)
2577 || !ctx
->Extensions
.ARB_texture_multisample
;
2584 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2585 "glFramebufferTexture2DEXT(textarget=%s)",
2586 _mesa_lookup_enum_by_nr(textarget
));
2591 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2592 level
, 0, GL_FALSE
);
2597 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2598 GLenum textarget
, GLuint texture
,
2599 GLint level
, GLint zoffset
)
2601 GET_CURRENT_CONTEXT(ctx
);
2603 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2604 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2605 "glFramebufferTexture3DEXT(textarget)");
2609 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2610 level
, zoffset
, GL_FALSE
);
2615 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2616 GLuint texture
, GLint level
, GLint layer
)
2618 GET_CURRENT_CONTEXT(ctx
);
2620 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2621 level
, layer
, GL_FALSE
);
2626 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2627 GLuint texture
, GLint level
)
2629 GET_CURRENT_CONTEXT(ctx
);
2631 if (_mesa_has_geometry_shaders(ctx
)) {
2632 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2635 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2636 "unsupported function (glFramebufferTexture) called");
2642 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2643 GLenum renderbufferTarget
,
2644 GLuint renderbuffer
)
2646 struct gl_renderbuffer_attachment
*att
;
2647 struct gl_framebuffer
*fb
;
2648 struct gl_renderbuffer
*rb
;
2649 GET_CURRENT_CONTEXT(ctx
);
2651 fb
= get_framebuffer_target(ctx
, target
);
2653 _mesa_error(ctx
, GL_INVALID_ENUM
,
2654 "glFramebufferRenderbufferEXT(target)");
2658 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2659 _mesa_error(ctx
, GL_INVALID_ENUM
,
2660 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2664 if (_mesa_is_winsys_fbo(fb
)) {
2665 /* Can't attach new renderbuffers to a window system framebuffer */
2666 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2670 att
= get_attachment(ctx
, fb
, attachment
);
2672 _mesa_error(ctx
, GL_INVALID_ENUM
,
2673 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2674 _mesa_lookup_enum_by_nr(attachment
));
2679 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2681 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2682 "glFramebufferRenderbufferEXT(non-existant"
2683 " renderbuffer %u)", renderbuffer
);
2686 else if (rb
== &DummyRenderbuffer
) {
2687 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2688 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2694 /* remove renderbuffer attachment */
2698 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2699 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2700 /* make sure the renderbuffer is a depth/stencil format */
2701 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2702 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2703 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2704 "glFramebufferRenderbufferEXT(renderbuffer"
2705 " is not DEPTH_STENCIL format)");
2710 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2712 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2713 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2715 /* Some subsequent GL commands may depend on the framebuffer's visual
2716 * after the binding is updated. Update visual info now.
2718 _mesa_update_framebuffer_visual(ctx
, fb
);
2723 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2724 GLenum pname
, GLint
*params
)
2726 const struct gl_renderbuffer_attachment
*att
;
2727 struct gl_framebuffer
*buffer
;
2729 GET_CURRENT_CONTEXT(ctx
);
2731 /* The error differs in GL and GLES. */
2732 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2734 buffer
= get_framebuffer_target(ctx
, target
);
2736 _mesa_error(ctx
, GL_INVALID_ENUM
,
2737 "glGetFramebufferAttachmentParameterivEXT(target)");
2741 if (_mesa_is_winsys_fbo(buffer
)) {
2742 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2745 * "If the framebuffer currently bound to target is zero, then
2746 * INVALID_OPERATION is generated."
2748 * The EXT_framebuffer_object spec has the same wording, and the
2749 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2752 if ((!_mesa_is_desktop_gl(ctx
) ||
2753 !ctx
->Extensions
.ARB_framebuffer_object
)
2754 && !_mesa_is_gles3(ctx
)) {
2755 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2756 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2760 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2761 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2762 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2763 "glGetFramebufferAttachmentParameteriv(attachment)");
2766 /* the default / window-system FBO */
2767 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2770 /* user-created framebuffer FBO */
2771 att
= get_attachment(ctx
, buffer
, attachment
);
2775 _mesa_error(ctx
, GL_INVALID_ENUM
,
2776 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2780 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2781 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2782 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
2783 /* This behavior is first specified in OpenGL 4.4 specification.
2785 * From the OpenGL 4.4 spec page 275:
2786 * "This query cannot be performed for a combined depth+stencil
2787 * attachment, since it does not have a single format."
2789 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2790 "glGetFramebufferAttachmentParameteriv("
2791 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
2792 " is invalid for depth+stencil attachment)");
2795 /* the depth and stencil attachments must point to the same buffer */
2796 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2797 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2798 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2799 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2800 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2801 " attachments differ)");
2806 /* No need to flush here */
2809 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2810 *params
= _mesa_is_winsys_fbo(buffer
)
2811 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2813 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2814 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2815 *params
= att
->Renderbuffer
->Name
;
2817 else if (att
->Type
== GL_TEXTURE
) {
2818 *params
= att
->Texture
->Name
;
2821 assert(att
->Type
== GL_NONE
);
2822 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2825 goto invalid_pname_enum
;
2829 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2830 if (att
->Type
== GL_TEXTURE
) {
2831 *params
= att
->TextureLevel
;
2833 else if (att
->Type
== GL_NONE
) {
2834 _mesa_error(ctx
, err
,
2835 "glGetFramebufferAttachmentParameterivEXT(pname)");
2838 goto invalid_pname_enum
;
2841 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2842 if (att
->Type
== GL_TEXTURE
) {
2843 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2844 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2850 else if (att
->Type
== GL_NONE
) {
2851 _mesa_error(ctx
, err
,
2852 "glGetFramebufferAttachmentParameterivEXT(pname)");
2855 goto invalid_pname_enum
;
2858 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2859 if (ctx
->API
== API_OPENGLES
) {
2860 goto invalid_pname_enum
;
2861 } else if (att
->Type
== GL_NONE
) {
2862 _mesa_error(ctx
, err
,
2863 "glGetFramebufferAttachmentParameterivEXT(pname)");
2864 } else if (att
->Type
== GL_TEXTURE
) {
2865 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2866 *params
= att
->Zoffset
;
2873 goto invalid_pname_enum
;
2876 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2877 if ((!_mesa_is_desktop_gl(ctx
) ||
2878 !ctx
->Extensions
.ARB_framebuffer_object
)
2879 && !_mesa_is_gles3(ctx
)) {
2880 goto invalid_pname_enum
;
2882 else if (att
->Type
== GL_NONE
) {
2883 _mesa_error(ctx
, err
,
2884 "glGetFramebufferAttachmentParameterivEXT(pname)");
2887 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2889 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2892 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2893 * if the sRGB conversion is unsupported. */
2894 *params
= GL_LINEAR
;
2898 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2899 if ((ctx
->API
!= API_OPENGL_COMPAT
||
2900 !ctx
->Extensions
.ARB_framebuffer_object
)
2901 && ctx
->API
!= API_OPENGL_CORE
2902 && !_mesa_is_gles3(ctx
)) {
2903 goto invalid_pname_enum
;
2905 else if (att
->Type
== GL_NONE
) {
2906 _mesa_error(ctx
, err
,
2907 "glGetFramebufferAttachmentParameterivEXT(pname)");
2910 mesa_format format
= att
->Renderbuffer
->Format
;
2912 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2915 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2916 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2917 * generate an INVALID_OPERATION error.
2919 if (_mesa_is_gles3(ctx
) &&
2920 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2921 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2922 "glGetFramebufferAttachmentParameteriv(cannot query "
2923 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2924 "GL_DEPTH_STENCIL_ATTACHMENT");
2928 if (format
== MESA_FORMAT_S_UINT8
) {
2932 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
2933 /* depends on the attachment parameter */
2934 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2942 *params
= _mesa_get_format_datatype(format
);
2946 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2947 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2948 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2949 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2950 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2951 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2952 if ((!_mesa_is_desktop_gl(ctx
) ||
2953 !ctx
->Extensions
.ARB_framebuffer_object
)
2954 && !_mesa_is_gles3(ctx
)) {
2955 goto invalid_pname_enum
;
2957 else if (att
->Type
== GL_NONE
) {
2958 _mesa_error(ctx
, err
,
2959 "glGetFramebufferAttachmentParameterivEXT(pname)");
2961 else if (att
->Texture
) {
2962 const struct gl_texture_image
*texImage
=
2963 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2966 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2967 texImage
->TexFormat
);
2973 else if (att
->Renderbuffer
) {
2974 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2975 att
->Renderbuffer
->Format
);
2978 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2979 " invalid FBO attachment structure");
2982 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
2983 if (!_mesa_has_geometry_shaders(ctx
)) {
2984 goto invalid_pname_enum
;
2985 } else if (att
->Type
== GL_TEXTURE
) {
2986 *params
= att
->Layered
;
2987 } else if (att
->Type
== GL_NONE
) {
2988 _mesa_error(ctx
, err
,
2989 "glGetFramebufferAttachmentParameteriv(pname)");
2991 goto invalid_pname_enum
;
2995 goto invalid_pname_enum
;
3001 _mesa_error(ctx
, GL_INVALID_ENUM
,
3002 "glGetFramebufferAttachmentParameteriv(pname)");
3008 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3009 const GLenum
*attachments
, GLint x
, GLint y
,
3010 GLsizei width
, GLsizei height
, const char *name
)
3013 struct gl_framebuffer
*fb
;
3014 GET_CURRENT_CONTEXT(ctx
);
3016 fb
= get_framebuffer_target(ctx
, target
);
3018 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3022 if (numAttachments
< 0) {
3023 _mesa_error(ctx
, GL_INVALID_VALUE
,
3024 "%s(numAttachments < 0)", name
);
3028 /* The GL_ARB_invalidate_subdata spec says:
3030 * "If an attachment is specified that does not exist in the
3031 * framebuffer bound to <target>, it is ignored."
3035 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3036 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3037 * INVALID_OPERATION is generated."
3039 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3040 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3041 * set of retrictions).
3043 for (i
= 0; i
< numAttachments
; i
++) {
3044 if (_mesa_is_winsys_fbo(fb
)) {
3045 switch (attachments
[i
]) {
3051 /* Accumulation buffers and auxilary buffers were removed in
3052 * OpenGL 3.1, and they never existed in OpenGL ES.
3054 if (ctx
->API
!= API_OPENGL_COMPAT
)
3064 case GL_FRONT_RIGHT
:
3065 if (!_mesa_is_desktop_gl(ctx
))
3072 switch (attachments
[i
]) {
3073 case GL_DEPTH_ATTACHMENT
:
3074 case GL_STENCIL_ATTACHMENT
:
3076 case GL_COLOR_ATTACHMENT0
:
3077 case GL_COLOR_ATTACHMENT1
:
3078 case GL_COLOR_ATTACHMENT2
:
3079 case GL_COLOR_ATTACHMENT3
:
3080 case GL_COLOR_ATTACHMENT4
:
3081 case GL_COLOR_ATTACHMENT5
:
3082 case GL_COLOR_ATTACHMENT6
:
3083 case GL_COLOR_ATTACHMENT7
:
3084 case GL_COLOR_ATTACHMENT8
:
3085 case GL_COLOR_ATTACHMENT9
:
3086 case GL_COLOR_ATTACHMENT10
:
3087 case GL_COLOR_ATTACHMENT11
:
3088 case GL_COLOR_ATTACHMENT12
:
3089 case GL_COLOR_ATTACHMENT13
:
3090 case GL_COLOR_ATTACHMENT14
:
3091 case GL_COLOR_ATTACHMENT15
: {
3092 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3093 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3094 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3095 "%s(attachment >= max. color attachments)", name
);
3106 /* We don't actually do anything for this yet. Just return after
3107 * validating the parameters and generating the required errors.
3112 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3118 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3119 const GLenum
*attachments
, GLint x
, GLint y
,
3120 GLsizei width
, GLsizei height
)
3122 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3123 x
, y
, width
, height
,
3124 "glInvalidateSubFramebuffer");
3129 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3130 const GLenum
*attachments
)
3132 /* The GL_ARB_invalidate_subdata spec says:
3136 * void InvalidateFramebuffer(enum target,
3137 * sizei numAttachments,
3138 * const enum *attachments);
3140 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3141 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3142 * <MAX_VIEWPORT_DIMS[1]> respectively."
3144 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3146 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3147 "glInvalidateFramebuffer");
3152 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3153 const GLenum
*attachments
)
3155 struct gl_framebuffer
*fb
;
3158 GET_CURRENT_CONTEXT(ctx
);
3160 fb
= get_framebuffer_target(ctx
, target
);
3162 _mesa_error(ctx
, GL_INVALID_ENUM
,
3163 "glDiscardFramebufferEXT(target %s)",
3164 _mesa_lookup_enum_by_nr(target
));
3168 if (numAttachments
< 0) {
3169 _mesa_error(ctx
, GL_INVALID_VALUE
,
3170 "glDiscardFramebufferEXT(numAttachments < 0)");
3174 for (i
= 0; i
< numAttachments
; i
++) {
3175 switch (attachments
[i
]) {
3179 if (_mesa_is_user_fbo(fb
))
3182 case GL_COLOR_ATTACHMENT0
:
3183 case GL_DEPTH_ATTACHMENT
:
3184 case GL_STENCIL_ATTACHMENT
:
3185 if (_mesa_is_winsys_fbo(fb
))
3193 if (ctx
->Driver
.DiscardFramebuffer
)
3194 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3199 _mesa_error(ctx
, GL_INVALID_ENUM
,
3200 "glDiscardFramebufferEXT(attachment %s)",
3201 _mesa_lookup_enum_by_nr(attachments
[i
]));