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
->Layered
= GL_FALSE
;
472 att
->Complete
= GL_FALSE
;
473 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
478 * Fallback for ctx->Driver.FramebufferRenderbuffer()
479 * Attach a renderbuffer object to a framebuffer object.
482 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
483 struct gl_framebuffer
*fb
,
484 GLenum attachment
, struct gl_renderbuffer
*rb
)
486 struct gl_renderbuffer_attachment
*att
;
488 mtx_lock(&fb
->Mutex
);
490 att
= get_attachment(ctx
, fb
, attachment
);
493 set_renderbuffer_attachment(ctx
, att
, rb
);
494 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
495 /* do stencil attachment here (depth already done above) */
496 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
498 set_renderbuffer_attachment(ctx
, att
, rb
);
500 rb
->AttachedAnytime
= GL_TRUE
;
503 remove_attachment(ctx
, att
);
504 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
505 /* detach stencil (depth was detached above) */
506 att
= get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
508 remove_attachment(ctx
, att
);
512 invalidate_framebuffer(fb
);
514 mtx_unlock(&fb
->Mutex
);
519 * Fallback for ctx->Driver.ValidateFramebuffer()
520 * Check if the renderbuffer's formats are supported by the software
522 * Drivers should probably override this.
525 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
528 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
529 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
531 switch (rb
->_BaseFormat
) {
533 case GL_LUMINANCE_ALPHA
:
538 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
542 switch (rb
->Format
) {
543 /* XXX This list is likely incomplete. */
544 case MESA_FORMAT_R9G9B9E5_FLOAT
:
545 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
548 /* render buffer format is supported by software rendering */
557 * Return true if the framebuffer has a combined depth/stencil
558 * renderbuffer attached.
561 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
563 const struct gl_renderbuffer_attachment
*depth
=
564 &fb
->Attachment
[BUFFER_DEPTH
];
565 const struct gl_renderbuffer_attachment
*stencil
=
566 &fb
->Attachment
[BUFFER_STENCIL
];
568 if (depth
->Type
== stencil
->Type
) {
569 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
570 depth
->Renderbuffer
== stencil
->Renderbuffer
)
573 if (depth
->Type
== GL_TEXTURE
&&
574 depth
->Texture
== stencil
->Texture
)
586 att_incomplete(const char *msg
)
588 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
589 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
598 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
600 static GLuint msg_id
;
602 _mesa_gl_debug(ctx
, &msg_id
,
603 MESA_DEBUG_SOURCE_API
,
604 MESA_DEBUG_TYPE_OTHER
,
605 MESA_DEBUG_SEVERITY_MEDIUM
,
606 "FBO incomplete: %s [%d]\n", msg
, index
);
608 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
609 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
615 * Is the given base format a legal format for a color renderbuffer?
618 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
620 switch (baseFormat
) {
625 case GL_LUMINANCE_ALPHA
:
628 return ctx
->API
== API_OPENGL_COMPAT
&&
629 ctx
->Extensions
.ARB_framebuffer_object
;
632 return ctx
->Extensions
.ARB_texture_rg
;
640 * Is the given base format a legal format for a color renderbuffer?
643 is_format_color_renderable(const struct gl_context
*ctx
, mesa_format format
,
644 GLenum internalFormat
)
646 const GLenum baseFormat
=
647 _mesa_get_format_base_format(format
);
650 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
651 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
655 /* Reject additional cases for GLES */
656 switch (internalFormat
) {
676 if (format
== MESA_FORMAT_B10G10R10A2_UNORM
&&
677 internalFormat
!= GL_RGB10_A2
) {
686 * Is the given base format a legal format for a depth/stencil renderbuffer?
689 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
691 switch (baseFormat
) {
692 case GL_DEPTH_COMPONENT
:
693 case GL_DEPTH_STENCIL_EXT
:
702 * Test if an attachment point is complete and update its Complete field.
703 * \param format if GL_COLOR, this is a color attachment point,
704 * if GL_DEPTH, this is a depth component attachment point,
705 * if GL_STENCIL, this is a stencil component attachment point.
708 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
709 struct gl_renderbuffer_attachment
*att
)
711 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
713 /* assume complete */
714 att
->Complete
= GL_TRUE
;
716 /* Look for reasons why the attachment might be incomplete */
717 if (att
->Type
== GL_TEXTURE
) {
718 const struct gl_texture_object
*texObj
= att
->Texture
;
719 struct gl_texture_image
*texImage
;
723 att_incomplete("no texobj");
724 att
->Complete
= GL_FALSE
;
728 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
730 att_incomplete("no teximage");
731 att
->Complete
= GL_FALSE
;
734 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
735 att_incomplete("teximage width/height=0");
736 att
->Complete
= GL_FALSE
;
740 switch (texObj
->Target
) {
742 if (att
->Zoffset
>= texImage
->Depth
) {
743 att_incomplete("bad z offset");
744 att
->Complete
= GL_FALSE
;
748 case GL_TEXTURE_1D_ARRAY
:
749 if (att
->Zoffset
>= texImage
->Height
) {
750 att_incomplete("bad 1D-array layer");
751 att
->Complete
= GL_FALSE
;
755 case GL_TEXTURE_2D_ARRAY
:
756 if (att
->Zoffset
>= texImage
->Depth
) {
757 att_incomplete("bad 2D-array layer");
758 att
->Complete
= GL_FALSE
;
762 case GL_TEXTURE_CUBE_MAP_ARRAY
:
763 if (att
->Zoffset
>= texImage
->Depth
) {
764 att_incomplete("bad cube-array layer");
765 att
->Complete
= GL_FALSE
;
771 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
773 if (format
== GL_COLOR
) {
774 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
775 att_incomplete("bad format");
776 att
->Complete
= GL_FALSE
;
779 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
780 att_incomplete("compressed internalformat");
781 att
->Complete
= GL_FALSE
;
785 /* OES_texture_float allows creation and use of floating point
786 * textures with GL_FLOAT, GL_HALF_FLOAT but it does not allow
787 * these textures to be used as a render target, this is done via
788 * GL_EXT_color_buffer(_half)_float with set of new sized types.
790 if (_mesa_is_gles(ctx
) && (texImage
->TexObject
->_IsFloat
||
791 texImage
->TexObject
->_IsHalfFloat
)) {
792 att_incomplete("bad internal format");
793 att
->Complete
= GL_FALSE
;
797 else if (format
== GL_DEPTH
) {
798 if (baseFormat
== GL_DEPTH_COMPONENT
) {
801 else if (ctx
->Extensions
.ARB_depth_texture
&&
802 baseFormat
== GL_DEPTH_STENCIL
) {
806 att
->Complete
= GL_FALSE
;
807 att_incomplete("bad depth format");
812 assert(format
== GL_STENCIL
);
813 if (ctx
->Extensions
.ARB_depth_texture
&&
814 baseFormat
== GL_DEPTH_STENCIL
) {
818 /* no such thing as stencil-only textures */
819 att_incomplete("illegal stencil texture");
820 att
->Complete
= GL_FALSE
;
825 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
826 const GLenum baseFormat
=
827 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
829 assert(att
->Renderbuffer
);
830 if (!att
->Renderbuffer
->InternalFormat
||
831 att
->Renderbuffer
->Width
< 1 ||
832 att
->Renderbuffer
->Height
< 1) {
833 att_incomplete("0x0 renderbuffer");
834 att
->Complete
= GL_FALSE
;
837 if (format
== GL_COLOR
) {
838 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
839 att_incomplete("bad renderbuffer color format");
840 att
->Complete
= GL_FALSE
;
844 else if (format
== GL_DEPTH
) {
845 if (baseFormat
== GL_DEPTH_COMPONENT
) {
848 else if (baseFormat
== GL_DEPTH_STENCIL
) {
852 att_incomplete("bad renderbuffer depth format");
853 att
->Complete
= GL_FALSE
;
858 assert(format
== GL_STENCIL
);
859 if (baseFormat
== GL_STENCIL_INDEX
||
860 baseFormat
== GL_DEPTH_STENCIL
) {
864 att
->Complete
= GL_FALSE
;
865 att_incomplete("bad renderbuffer stencil format");
871 assert(att
->Type
== GL_NONE
);
879 * Test if the given framebuffer object is complete and update its
880 * Status field with the results.
881 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
882 * driver to make hardware-specific validation/completeness checks.
883 * Also update the framebuffer's Width and Height fields if the
884 * framebuffer is complete.
887 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
888 struct gl_framebuffer
*fb
)
891 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
892 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
893 GLint numSamples
= -1;
894 GLint fixedSampleLocations
= -1;
897 /* Covers max_layer_count, is_layered, and layer_tex_target */
898 bool layer_info_valid
= false;
899 GLuint max_layer_count
= 0, att_layer_count
;
900 bool is_layered
= false;
901 GLenum layer_tex_target
= 0;
902 bool has_depth_attachment
= false;
903 bool has_stencil_attachment
= false;
905 assert(_mesa_is_user_fbo(fb
));
907 /* we're changing framebuffer fields here */
908 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
913 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
914 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
916 /* Start at -2 to more easily loop over all attachment points.
921 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
922 struct gl_renderbuffer_attachment
*att
;
924 mesa_format attFormat
;
925 GLenum att_tex_target
= GL_NONE
;
928 * XXX for ARB_fbo, only check color buffers that are named by
929 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
932 /* check for attachment completeness
935 att
= &fb
->Attachment
[BUFFER_DEPTH
];
936 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
937 if (!att
->Complete
) {
938 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
939 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
941 } else if (att
->Type
!= GL_NONE
) {
942 has_depth_attachment
= true;
946 att
= &fb
->Attachment
[BUFFER_STENCIL
];
947 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
948 if (!att
->Complete
) {
949 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
950 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
952 } else if (att
->Type
!= GL_NONE
) {
953 has_stencil_attachment
= true;
957 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
958 test_attachment_completeness(ctx
, GL_COLOR
, att
);
959 if (!att
->Complete
) {
960 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
961 fbo_incomplete(ctx
, "color attachment incomplete", i
);
966 /* get width, height, format of the renderbuffer/texture
968 if (att
->Type
== GL_TEXTURE
) {
969 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
970 att_tex_target
= att
->Texture
->Target
;
971 minWidth
= MIN2(minWidth
, texImg
->Width
);
972 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
973 minHeight
= MIN2(minHeight
, texImg
->Height
);
974 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
975 f
= texImg
->_BaseFormat
;
976 attFormat
= texImg
->TexFormat
;
979 if (!is_format_color_renderable(ctx
, attFormat
,
980 texImg
->InternalFormat
) &&
981 !is_legal_depth_format(ctx
, f
)) {
982 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
;
983 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
988 numSamples
= texImg
->NumSamples
;
989 else if (numSamples
!= texImg
->NumSamples
) {
990 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
991 fbo_incomplete(ctx
, "inconsistent sample count", -1);
995 if (fixedSampleLocations
< 0)
996 fixedSampleLocations
= texImg
->FixedSampleLocations
;
997 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
998 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
999 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1003 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1004 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
1005 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
1006 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
1007 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
1008 f
= att
->Renderbuffer
->InternalFormat
;
1009 attFormat
= att
->Renderbuffer
->Format
;
1013 numSamples
= att
->Renderbuffer
->NumSamples
;
1014 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
1015 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1016 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1020 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1021 if (fixedSampleLocations
< 0)
1022 fixedSampleLocations
= GL_TRUE
;
1023 else if (fixedSampleLocations
!= GL_TRUE
) {
1024 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1025 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1030 assert(att
->Type
== GL_NONE
);
1034 /* check if integer color */
1035 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1037 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1039 GLenum type
= _mesa_get_format_datatype(attFormat
);
1041 fb
->_AllColorBuffersFixedPoint
=
1042 fb
->_AllColorBuffersFixedPoint
&&
1043 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1045 fb
->_HasSNormOrFloatColorBuffer
=
1046 fb
->_HasSNormOrFloatColorBuffer
||
1047 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1050 /* Error-check width, height, format */
1051 if (numImages
== 1) {
1058 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1059 /* check that width, height, format are same */
1060 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1061 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1062 fbo_incomplete(ctx
, "width or height mismatch", -1);
1065 /* check that all color buffers are the same format */
1066 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1067 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1068 fbo_incomplete(ctx
, "format mismatch", -1);
1074 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1076 if (att
->Type
== GL_RENDERBUFFER
&&
1077 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1078 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1079 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1083 /* Check that layered rendering is consistent. */
1085 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1086 att_layer_count
= 6;
1087 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1088 att_layer_count
= att
->Renderbuffer
->Height
;
1090 att_layer_count
= att
->Renderbuffer
->Depth
;
1092 att_layer_count
= 0;
1094 if (!layer_info_valid
) {
1095 is_layered
= att
->Layered
;
1096 max_layer_count
= att_layer_count
;
1097 layer_tex_target
= att_tex_target
;
1098 layer_info_valid
= true;
1099 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1100 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1101 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1103 } else if (is_layered
!= att
->Layered
) {
1104 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1106 "framebuffer attachment layer mode is inconsistent",
1109 } else if (att_layer_count
> max_layer_count
) {
1110 max_layer_count
= att_layer_count
;
1114 fb
->MaxNumLayers
= max_layer_count
;
1116 if (numImages
== 0) {
1117 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1118 fbo_incomplete(ctx
, "no attachments", -1);
1122 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1123 /* Check that all DrawBuffers are present */
1124 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1125 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1126 const struct gl_renderbuffer_attachment
*att
1127 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1129 if (att
->Type
== GL_NONE
) {
1130 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1131 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1137 /* Check that the ReadBuffer is present */
1138 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1139 const struct gl_renderbuffer_attachment
*att
1140 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1142 if (att
->Type
== GL_NONE
) {
1143 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1144 fbo_incomplete(ctx
, "missing readbuffer", -1);
1150 /* The OpenGL ES3 spec, in chapter 9.4. FRAMEBUFFER COMPLETENESS, says:
1152 * "Depth and stencil attachments, if present, are the same image."
1154 * This restriction is not present in the OpenGL ES2 spec.
1156 if (_mesa_is_gles3(ctx
) &&
1157 has_stencil_attachment
&& has_depth_attachment
&&
1158 !_mesa_has_depthstencil_combined(fb
)) {
1159 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1160 fbo_incomplete(ctx
, "Depth and stencil attachments must be the same image", -1);
1164 /* Provisionally set status = COMPLETE ... */
1165 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1167 /* ... but the driver may say the FB is incomplete.
1168 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1171 if (ctx
->Driver
.ValidateFramebuffer
) {
1172 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1173 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1174 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1178 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1180 * Note that if ARB_framebuffer_object is supported and the attached
1181 * renderbuffers/textures are different sizes, the framebuffer
1182 * width/height will be set to the smallest width/height.
1184 fb
->Width
= minWidth
;
1185 fb
->Height
= minHeight
;
1187 /* finally, update the visual info for the framebuffer */
1188 _mesa_update_framebuffer_visual(ctx
, fb
);
1193 GLboolean GLAPIENTRY
1194 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1196 GET_CURRENT_CONTEXT(ctx
);
1197 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1199 struct gl_renderbuffer
*rb
=
1200 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1201 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1208 static struct gl_renderbuffer
*
1209 allocate_renderbuffer(struct gl_context
*ctx
, GLuint renderbuffer
,
1212 struct gl_renderbuffer
*newRb
;
1214 /* create new renderbuffer object */
1215 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1217 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1220 assert(newRb
->AllocStorage
);
1221 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1222 newRb
->RefCount
= 1; /* referenced by hash table */
1229 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1231 struct gl_renderbuffer
*newRb
;
1232 GET_CURRENT_CONTEXT(ctx
);
1234 if (target
!= GL_RENDERBUFFER_EXT
) {
1235 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1239 /* No need to flush here since the render buffer binding has no
1240 * effect on rendering state.
1244 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1245 if (newRb
== &DummyRenderbuffer
) {
1246 /* ID was reserved, but no real renderbuffer object made yet */
1249 else if (!newRb
&& !allow_user_names
) {
1250 /* All RB IDs must be Gen'd */
1251 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1256 newRb
= allocate_renderbuffer(ctx
, renderbuffer
, "glBindRenderbufferEXT");
1263 assert(newRb
!= &DummyRenderbuffer
);
1265 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1269 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1271 GET_CURRENT_CONTEXT(ctx
);
1273 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1274 * entry point, but they allow the use of user-generated names.
1276 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1280 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1282 /* This function should not be in the dispatch table for core profile /
1283 * OpenGL 3.1, so execution should never get here in those cases -- no
1284 * need for an explicit test.
1286 bind_renderbuffer(target
, renderbuffer
, true);
1291 * Remove the specified renderbuffer or texture from any attachment point in
1295 * \c true if the renderbuffer was detached from an attachment point. \c
1299 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1300 struct gl_framebuffer
*fb
,
1304 bool progress
= false;
1306 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1307 if (fb
->Attachment
[i
].Texture
== att
1308 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1309 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1314 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1315 * Completeness," of the OpenGL 3.1 spec says:
1317 * "Performing any of the following actions may change whether the
1318 * framebuffer is considered complete or incomplete:
1322 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1323 * containing an image that is attached to a framebuffer object
1324 * that is bound to the framebuffer."
1327 invalidate_framebuffer(fb
);
1334 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1337 GET_CURRENT_CONTEXT(ctx
);
1340 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteRenderbuffers(n < 0)");
1344 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1346 for (i
= 0; i
< n
; i
++) {
1347 if (renderbuffers
[i
] > 0) {
1348 struct gl_renderbuffer
*rb
;
1349 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1351 /* check if deleting currently bound renderbuffer object */
1352 if (rb
== ctx
->CurrentRenderbuffer
) {
1354 assert(rb
->RefCount
>= 2);
1355 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1358 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1359 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1360 * of the OpenGL 3.1 spec says:
1362 * "If a renderbuffer object is deleted while its image is
1363 * attached to one or more attachment points in the currently
1364 * bound framebuffer, then it is as if FramebufferRenderbuffer
1365 * had been called, with a renderbuffer of 0, for each
1366 * attachment point to which this image was attached in the
1367 * currently bound framebuffer. In other words, this
1368 * renderbuffer image is first detached from all attachment
1369 * points in the currently bound framebuffer. Note that the
1370 * renderbuffer image is specifically not detached from any
1371 * non-bound framebuffers. Detaching the image from any
1372 * non-bound framebuffers is the responsibility of the
1375 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1376 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1378 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1379 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1380 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1383 /* Remove from hash table immediately, to free the ID.
1384 * But the object will not be freed until it's no longer
1385 * referenced anywhere else.
1387 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1389 if (rb
!= &DummyRenderbuffer
) {
1390 /* no longer referenced by hash table */
1391 _mesa_reference_renderbuffer(&rb
, NULL
);
1399 create_render_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*renderbuffers
,
1402 const char *func
= dsa
? "glCreateRenderbuffers" : "glGenRenderbuffers";
1403 struct gl_renderbuffer
*obj
;
1408 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n<0)", func
);
1415 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1417 for (i
= 0; i
< n
; i
++) {
1418 GLuint name
= first
+ i
;
1419 renderbuffers
[i
] = name
;
1422 obj
= allocate_renderbuffer(ctx
, name
, func
);
1424 obj
= &DummyRenderbuffer
;
1426 /* insert the object into the hash table */
1427 mtx_lock(&ctx
->Shared
->Mutex
);
1428 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, obj
);
1429 mtx_unlock(&ctx
->Shared
->Mutex
);
1436 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1438 GET_CURRENT_CONTEXT(ctx
);
1439 create_render_buffers(ctx
, n
, renderbuffers
, false);
1444 _mesa_CreateRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1446 GET_CURRENT_CONTEXT(ctx
);
1447 create_render_buffers(ctx
, n
, renderbuffers
, true);
1452 * Given an internal format token for a render buffer, return the
1453 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1454 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1455 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1457 * This is similar to _mesa_base_tex_format() but the set of valid
1458 * internal formats is different.
1460 * Note that even if a format is determined to be legal here, validation
1461 * of the FBO may fail if the format is not supported by the driver/GPU.
1463 * \param internalFormat as passed to glRenderbufferStorage()
1464 * \return the base internal format, or 0 if internalFormat is illegal
1467 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1470 * Notes: some formats such as alpha, luminance, etc. were added
1471 * with GL_ARB_framebuffer_object.
1473 switch (internalFormat
) {
1479 return (ctx
->API
== API_OPENGL_COMPAT
&&
1480 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1484 case GL_LUMINANCE12
:
1485 case GL_LUMINANCE16
:
1486 return (ctx
->API
== API_OPENGL_COMPAT
&&
1487 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1488 case GL_LUMINANCE_ALPHA
:
1489 case GL_LUMINANCE4_ALPHA4
:
1490 case GL_LUMINANCE6_ALPHA2
:
1491 case GL_LUMINANCE8_ALPHA8
:
1492 case GL_LUMINANCE12_ALPHA4
:
1493 case GL_LUMINANCE12_ALPHA12
:
1494 case GL_LUMINANCE16_ALPHA16
:
1495 return (ctx
->API
== API_OPENGL_COMPAT
&&
1496 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1500 case GL_INTENSITY12
:
1501 case GL_INTENSITY16
:
1502 return (ctx
->API
== API_OPENGL_COMPAT
&&
1503 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1513 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1515 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1524 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1526 case GL_SRGB8_ALPHA8_EXT
:
1527 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1528 case GL_STENCIL_INDEX
:
1529 case GL_STENCIL_INDEX1_EXT
:
1530 case GL_STENCIL_INDEX4_EXT
:
1531 case GL_STENCIL_INDEX16_EXT
:
1532 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1533 * OpenGL ES, but Mesa does not currently support them.
1535 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1536 case GL_STENCIL_INDEX8_EXT
:
1537 return GL_STENCIL_INDEX
;
1538 case GL_DEPTH_COMPONENT
:
1539 case GL_DEPTH_COMPONENT32
:
1540 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1541 case GL_DEPTH_COMPONENT16
:
1542 case GL_DEPTH_COMPONENT24
:
1543 return GL_DEPTH_COMPONENT
;
1544 case GL_DEPTH_STENCIL
:
1545 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1546 case GL_DEPTH24_STENCIL8
:
1547 return GL_DEPTH_STENCIL
;
1548 case GL_DEPTH_COMPONENT32F
:
1549 return ctx
->Version
>= 30
1550 || (ctx
->API
== API_OPENGL_COMPAT
&&
1551 ctx
->Extensions
.ARB_depth_buffer_float
)
1552 ? GL_DEPTH_COMPONENT
: 0;
1553 case GL_DEPTH32F_STENCIL8
:
1554 return ctx
->Version
>= 30
1555 || (ctx
->API
== API_OPENGL_COMPAT
&&
1556 ctx
->Extensions
.ARB_depth_buffer_float
)
1557 ? GL_DEPTH_STENCIL
: 0;
1560 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1563 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1567 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1570 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1572 /* signed normalized texture formats */
1576 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1581 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1585 case GL_RGB16_SNORM
:
1586 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1589 case GL_RGBA8_SNORM
:
1590 case GL_RGBA16_SNORM
:
1591 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1593 case GL_ALPHA_SNORM
:
1594 case GL_ALPHA8_SNORM
:
1595 case GL_ALPHA16_SNORM
:
1596 return ctx
->API
== API_OPENGL_COMPAT
&&
1597 ctx
->Extensions
.EXT_texture_snorm
&&
1598 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1599 case GL_LUMINANCE_SNORM
:
1600 case GL_LUMINANCE8_SNORM
:
1601 case GL_LUMINANCE16_SNORM
:
1602 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1604 case GL_LUMINANCE_ALPHA_SNORM
:
1605 case GL_LUMINANCE8_ALPHA8_SNORM
:
1606 case GL_LUMINANCE16_ALPHA16_SNORM
:
1607 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1608 ? GL_LUMINANCE_ALPHA
: 0;
1609 case GL_INTENSITY_SNORM
:
1610 case GL_INTENSITY8_SNORM
:
1611 case GL_INTENSITY16_SNORM
:
1612 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1617 return ((_mesa_is_desktop_gl(ctx
) &&
1618 ctx
->Extensions
.ARB_texture_rg
&&
1619 ctx
->Extensions
.ARB_texture_float
) ||
1620 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1624 return ((_mesa_is_desktop_gl(ctx
) &&
1625 ctx
->Extensions
.ARB_texture_rg
&&
1626 ctx
->Extensions
.ARB_texture_float
) ||
1627 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1631 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1635 return ((_mesa_is_desktop_gl(ctx
) &&
1636 ctx
->Extensions
.ARB_texture_float
) ||
1637 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1639 case GL_ALPHA16F_ARB
:
1640 case GL_ALPHA32F_ARB
:
1641 return ctx
->API
== API_OPENGL_COMPAT
&&
1642 ctx
->Extensions
.ARB_texture_float
&&
1643 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1644 case GL_LUMINANCE16F_ARB
:
1645 case GL_LUMINANCE32F_ARB
:
1646 return ctx
->API
== API_OPENGL_COMPAT
&&
1647 ctx
->Extensions
.ARB_texture_float
&&
1648 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1649 case GL_LUMINANCE_ALPHA16F_ARB
:
1650 case GL_LUMINANCE_ALPHA32F_ARB
:
1651 return ctx
->API
== API_OPENGL_COMPAT
&&
1652 ctx
->Extensions
.ARB_texture_float
&&
1653 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1654 case GL_INTENSITY16F_ARB
:
1655 case GL_INTENSITY32F_ARB
:
1656 return ctx
->API
== API_OPENGL_COMPAT
&&
1657 ctx
->Extensions
.ARB_texture_float
&&
1658 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1659 case GL_R11F_G11F_B10F
:
1660 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1661 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1664 case GL_RGBA8UI_EXT
:
1665 case GL_RGBA16UI_EXT
:
1666 case GL_RGBA32UI_EXT
:
1668 case GL_RGBA16I_EXT
:
1669 case GL_RGBA32I_EXT
:
1670 return ctx
->Version
>= 30
1671 || (_mesa_is_desktop_gl(ctx
) &&
1672 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1675 case GL_RGB16UI_EXT
:
1676 case GL_RGB32UI_EXT
:
1680 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1688 return ctx
->Version
>= 30
1689 || (_mesa_is_desktop_gl(ctx
) &&
1690 ctx
->Extensions
.ARB_texture_rg
&&
1691 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1699 return ctx
->Version
>= 30
1700 || (_mesa_is_desktop_gl(ctx
) &&
1701 ctx
->Extensions
.ARB_texture_rg
&&
1702 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1704 case GL_INTENSITY8I_EXT
:
1705 case GL_INTENSITY8UI_EXT
:
1706 case GL_INTENSITY16I_EXT
:
1707 case GL_INTENSITY16UI_EXT
:
1708 case GL_INTENSITY32I_EXT
:
1709 case GL_INTENSITY32UI_EXT
:
1710 return ctx
->API
== API_OPENGL_COMPAT
&&
1711 ctx
->Extensions
.EXT_texture_integer
&&
1712 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1714 case GL_LUMINANCE8I_EXT
:
1715 case GL_LUMINANCE8UI_EXT
:
1716 case GL_LUMINANCE16I_EXT
:
1717 case GL_LUMINANCE16UI_EXT
:
1718 case GL_LUMINANCE32I_EXT
:
1719 case GL_LUMINANCE32UI_EXT
:
1720 return ctx
->API
== API_OPENGL_COMPAT
&&
1721 ctx
->Extensions
.EXT_texture_integer
&&
1722 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1724 case GL_LUMINANCE_ALPHA8I_EXT
:
1725 case GL_LUMINANCE_ALPHA8UI_EXT
:
1726 case GL_LUMINANCE_ALPHA16I_EXT
:
1727 case GL_LUMINANCE_ALPHA16UI_EXT
:
1728 case GL_LUMINANCE_ALPHA32I_EXT
:
1729 case GL_LUMINANCE_ALPHA32UI_EXT
:
1730 return ctx
->API
== API_OPENGL_COMPAT
&&
1731 ctx
->Extensions
.EXT_texture_integer
&&
1732 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1734 case GL_ALPHA8I_EXT
:
1735 case GL_ALPHA8UI_EXT
:
1736 case GL_ALPHA16I_EXT
:
1737 case GL_ALPHA16UI_EXT
:
1738 case GL_ALPHA32I_EXT
:
1739 case GL_ALPHA32UI_EXT
:
1740 return ctx
->API
== API_OPENGL_COMPAT
&&
1741 ctx
->Extensions
.EXT_texture_integer
&&
1742 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1745 return (_mesa_is_desktop_gl(ctx
) &&
1746 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1747 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1750 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1759 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1762 invalidate_rb(GLuint key
, void *data
, void *userData
)
1764 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1765 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1767 /* If this is a user-created FBO */
1768 if (_mesa_is_user_fbo(fb
)) {
1770 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1771 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1772 if (att
->Type
== GL_RENDERBUFFER
&&
1773 att
->Renderbuffer
== rb
) {
1774 /* Mark fb status as indeterminate to force re-validation */
1783 /** sentinal value, see below */
1784 #define NO_SAMPLES 1000
1788 * Helper function used by _mesa_RenderbufferStorage() and
1789 * _mesa_RenderbufferStorageMultisample().
1790 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1793 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1794 GLsizei width
, GLsizei height
, GLsizei samples
)
1796 const char *func
= samples
== NO_SAMPLES
?
1797 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1798 struct gl_renderbuffer
*rb
;
1800 GLenum sample_count_error
;
1801 GET_CURRENT_CONTEXT(ctx
);
1803 if (MESA_VERBOSE
& VERBOSE_API
) {
1804 if (samples
== NO_SAMPLES
)
1805 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1807 _mesa_lookup_enum_by_nr(target
),
1808 _mesa_lookup_enum_by_nr(internalFormat
),
1811 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1813 _mesa_lookup_enum_by_nr(target
),
1814 _mesa_lookup_enum_by_nr(internalFormat
),
1815 width
, height
, samples
);
1818 if (target
!= GL_RENDERBUFFER_EXT
) {
1819 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1823 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1824 if (baseFormat
== 0) {
1825 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1826 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1830 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1831 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1835 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1836 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1840 if (samples
== NO_SAMPLES
) {
1841 /* NumSamples == 0 indicates non-multisampling */
1845 /* check the sample count;
1846 * note: driver may choose to use more samples than what's requested
1848 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1849 internalFormat
, samples
);
1850 if (sample_count_error
!= GL_NO_ERROR
) {
1851 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1856 rb
= ctx
->CurrentRenderbuffer
;
1858 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1862 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1864 if (rb
->InternalFormat
== internalFormat
&&
1865 rb
->Width
== (GLuint
) width
&&
1866 rb
->Height
== (GLuint
) height
&&
1867 rb
->NumSamples
== samples
) {
1868 /* no change in allocation needed */
1872 /* These MUST get set by the AllocStorage func */
1873 rb
->Format
= MESA_FORMAT_NONE
;
1874 rb
->NumSamples
= samples
;
1876 /* Now allocate the storage */
1877 assert(rb
->AllocStorage
);
1878 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1879 /* No error - check/set fields now */
1880 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1881 assert(rb
->Width
== (GLuint
) width
);
1882 assert(rb
->Height
== (GLuint
) height
);
1883 rb
->InternalFormat
= internalFormat
;
1884 rb
->_BaseFormat
= baseFormat
;
1885 assert(rb
->_BaseFormat
!= 0);
1888 /* Probably ran out of memory - clear the fields */
1891 rb
->Format
= MESA_FORMAT_NONE
;
1892 rb
->InternalFormat
= GL_NONE
;
1893 rb
->_BaseFormat
= GL_NONE
;
1897 /* Invalidate the framebuffers the renderbuffer is attached in. */
1898 if (rb
->AttachedAnytime
) {
1899 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1905 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1907 struct gl_renderbuffer
*rb
;
1908 GET_CURRENT_CONTEXT(ctx
);
1910 if (!ctx
->Extensions
.OES_EGL_image
) {
1911 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1912 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1916 if (target
!= GL_RENDERBUFFER
) {
1917 _mesa_error(ctx
, GL_INVALID_ENUM
,
1918 "EGLImageTargetRenderbufferStorageOES");
1922 rb
= ctx
->CurrentRenderbuffer
;
1924 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1925 "EGLImageTargetRenderbufferStorageOES");
1929 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1931 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1936 * Helper function for _mesa_GetRenderbufferParameteriv() and
1937 * _mesa_GetFramebufferAttachmentParameteriv()
1938 * We have to be careful to respect the base format. For example, if a
1939 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1940 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1941 * we need to return zero.
1944 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
1946 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1947 return _mesa_get_format_bits(format
, pname
);
1955 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1956 GLsizei width
, GLsizei height
)
1958 /* GL_ARB_fbo says calling this function is equivalent to calling
1959 * glRenderbufferStorageMultisample() with samples=0. We pass in
1960 * a token value here just for error reporting purposes.
1962 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1967 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1968 GLenum internalFormat
,
1969 GLsizei width
, GLsizei height
)
1971 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1976 * OpenGL ES version of glRenderBufferStorage.
1979 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1980 GLsizei width
, GLsizei height
)
1982 switch (internalFormat
) {
1984 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1985 /* choose a closest format */
1986 internalFormat
= GL_RGB5
;
1992 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1997 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1999 struct gl_renderbuffer
*rb
;
2000 GET_CURRENT_CONTEXT(ctx
);
2002 if (target
!= GL_RENDERBUFFER_EXT
) {
2003 _mesa_error(ctx
, GL_INVALID_ENUM
,
2004 "glGetRenderbufferParameterivEXT(target)");
2008 rb
= ctx
->CurrentRenderbuffer
;
2010 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2011 "glGetRenderbufferParameterivEXT");
2015 /* No need to flush here since we're just quering state which is
2016 * not effected by rendering.
2020 case GL_RENDERBUFFER_WIDTH_EXT
:
2021 *params
= rb
->Width
;
2023 case GL_RENDERBUFFER_HEIGHT_EXT
:
2024 *params
= rb
->Height
;
2026 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
2027 *params
= rb
->InternalFormat
;
2029 case GL_RENDERBUFFER_RED_SIZE_EXT
:
2030 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
2031 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
2032 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
2033 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
2034 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
2035 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
2037 case GL_RENDERBUFFER_SAMPLES
:
2038 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
2039 || _mesa_is_gles3(ctx
)) {
2040 *params
= rb
->NumSamples
;
2045 _mesa_error(ctx
, GL_INVALID_ENUM
,
2046 "glGetRenderbufferParameterivEXT(target)");
2052 GLboolean GLAPIENTRY
2053 _mesa_IsFramebuffer(GLuint framebuffer
)
2055 GET_CURRENT_CONTEXT(ctx
);
2056 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2058 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2059 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
2067 * Check if any of the attachments of the given framebuffer are textures
2068 * (render to texture). Call ctx->Driver.RenderTexture() for such
2072 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2075 assert(ctx
->Driver
.RenderTexture
);
2077 if (_mesa_is_winsys_fbo(fb
))
2078 return; /* can't render to texture with winsys framebuffers */
2080 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2081 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2082 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2083 && driver_RenderTexture_is_safe(att
)) {
2084 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2091 * Examine all the framebuffer's attachments to see if any are textures.
2092 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2093 * notify the device driver that the texture image may have changed.
2096 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2098 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2099 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2102 if (ctx
->Driver
.FinishRenderTexture
) {
2104 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2105 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2106 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2107 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2108 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2116 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2118 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2119 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2120 GLboolean bindReadBuf
, bindDrawBuf
;
2121 GET_CURRENT_CONTEXT(ctx
);
2124 case GL_DRAW_FRAMEBUFFER_EXT
:
2125 bindDrawBuf
= GL_TRUE
;
2126 bindReadBuf
= GL_FALSE
;
2128 case GL_READ_FRAMEBUFFER_EXT
:
2129 bindDrawBuf
= GL_FALSE
;
2130 bindReadBuf
= GL_TRUE
;
2132 case GL_FRAMEBUFFER_EXT
:
2133 bindDrawBuf
= GL_TRUE
;
2134 bindReadBuf
= GL_TRUE
;
2137 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2142 /* Binding a user-created framebuffer object */
2143 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2144 if (newDrawFb
== &DummyFramebuffer
) {
2145 /* ID was reserved, but no real framebuffer object made yet */
2148 else if (!newDrawFb
&& !allow_user_names
) {
2149 /* All FBO IDs must be Gen'd */
2150 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2155 /* create new framebuffer object */
2156 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2158 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2161 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2163 newReadFb
= newDrawFb
;
2166 /* Binding the window system framebuffer (which was originally set
2167 * with MakeCurrent).
2169 newDrawFb
= ctx
->WinSysDrawBuffer
;
2170 newReadFb
= ctx
->WinSysReadBuffer
;
2174 assert(newDrawFb
!= &DummyFramebuffer
);
2176 /* save pointers to current/old framebuffers */
2177 oldDrawFb
= ctx
->DrawBuffer
;
2178 oldReadFb
= ctx
->ReadBuffer
;
2180 /* check if really changing bindings */
2181 if (oldDrawFb
== newDrawFb
)
2182 bindDrawBuf
= GL_FALSE
;
2183 if (oldReadFb
== newReadFb
)
2184 bindReadBuf
= GL_FALSE
;
2187 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2189 * We also check if we're beginning and/or ending render-to-texture.
2190 * When a framebuffer with texture attachments is unbound, call
2191 * ctx->Driver.FinishRenderTexture().
2192 * When a framebuffer with texture attachments is bound, call
2193 * ctx->Driver.RenderTexture().
2195 * Note that if the ReadBuffer has texture attachments we don't consider
2196 * that a render-to-texture case.
2199 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2201 /* check if old readbuffer was render-to-texture */
2202 check_end_texture_render(ctx
, oldReadFb
);
2204 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2208 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2210 /* check if old framebuffer had any texture attachments */
2212 check_end_texture_render(ctx
, oldDrawFb
);
2214 /* check if newly bound framebuffer has any texture attachments */
2215 check_begin_texture_render(ctx
, newDrawFb
);
2217 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2220 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2221 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2226 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2228 GET_CURRENT_CONTEXT(ctx
);
2230 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2231 * point, but they allow the use of user-generated names.
2233 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2238 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2240 /* This function should not be in the dispatch table for core profile /
2241 * OpenGL 3.1, so execution should never get here in those cases -- no
2242 * need for an explicit test.
2244 bind_framebuffer(target
, framebuffer
, true);
2249 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2252 GET_CURRENT_CONTEXT(ctx
);
2255 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteFramebuffers(n < 0)");
2259 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2261 for (i
= 0; i
< n
; i
++) {
2262 if (framebuffers
[i
] > 0) {
2263 struct gl_framebuffer
*fb
;
2264 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2266 assert(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2268 /* check if deleting currently bound framebuffer object */
2269 if (fb
== ctx
->DrawBuffer
) {
2271 assert(fb
->RefCount
>= 2);
2272 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2274 if (fb
== ctx
->ReadBuffer
) {
2276 assert(fb
->RefCount
>= 2);
2277 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2280 /* remove from hash table immediately, to free the ID */
2281 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2283 if (fb
!= &DummyFramebuffer
) {
2284 /* But the object will not be freed until it's no longer
2285 * bound in any context.
2287 _mesa_reference_framebuffer(&fb
, NULL
);
2296 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2298 GET_CURRENT_CONTEXT(ctx
);
2303 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2310 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2312 for (i
= 0; i
< n
; i
++) {
2313 GLuint name
= first
+ i
;
2314 framebuffers
[i
] = name
;
2315 /* insert dummy placeholder into hash table */
2316 mtx_lock(&ctx
->Shared
->Mutex
);
2317 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2318 mtx_unlock(&ctx
->Shared
->Mutex
);
2324 _mesa_CheckFramebufferStatus(GLenum target
)
2326 struct gl_framebuffer
*buffer
;
2327 GET_CURRENT_CONTEXT(ctx
);
2329 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2331 if (MESA_VERBOSE
& VERBOSE_API
)
2332 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2333 _mesa_lookup_enum_by_nr(target
));
2335 buffer
= get_framebuffer_target(ctx
, target
);
2337 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2341 if (_mesa_is_winsys_fbo(buffer
)) {
2342 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2343 if (buffer
!= &IncompleteFramebuffer
) {
2344 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2346 return GL_FRAMEBUFFER_UNDEFINED
;
2350 /* No need to flush here */
2352 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2353 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2356 return buffer
->_Status
;
2361 * Replicate the src attachment point. Used by framebuffer_texture() when
2362 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2363 * GL_STENCIL_ATTACHMENT.
2366 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2367 gl_buffer_index dst
,
2368 gl_buffer_index src
)
2370 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2371 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2373 assert(src_att
->Texture
!= NULL
);
2374 assert(src_att
->Renderbuffer
!= NULL
);
2376 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2377 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2378 dst_att
->Type
= src_att
->Type
;
2379 dst_att
->Complete
= src_att
->Complete
;
2380 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2381 dst_att
->Zoffset
= src_att
->Zoffset
;
2386 * Common code called by glFramebufferTexture1D/2D/3D() and
2387 * glFramebufferTextureLayer().
2389 * \param textarget is the textarget that was passed to the
2390 * glFramebufferTexture...() function, or 0 if the corresponding function
2391 * doesn't have a textarget parameter.
2393 * \param layered is true if this function was called from
2394 * glFramebufferTexture(), false otherwise.
2397 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2398 GLenum attachment
, GLenum textarget
, GLuint texture
,
2399 GLint level
, GLuint zoffset
, GLboolean layered
)
2401 struct gl_renderbuffer_attachment
*att
;
2402 struct gl_texture_object
*texObj
= NULL
;
2403 struct gl_framebuffer
*fb
;
2404 GLenum maxLevelsTarget
;
2406 fb
= get_framebuffer_target(ctx
, target
);
2408 _mesa_error(ctx
, GL_INVALID_ENUM
,
2409 "glFramebufferTexture%s(target=0x%x)", caller
, target
);
2413 /* check framebuffer binding */
2414 if (_mesa_is_winsys_fbo(fb
)) {
2415 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2416 "glFramebufferTexture%s", caller
);
2420 /* The textarget, level, and zoffset parameters are only validated if
2421 * texture is non-zero.
2424 GLboolean err
= GL_TRUE
;
2426 texObj
= _mesa_lookup_texture(ctx
, texture
);
2427 if (texObj
!= NULL
) {
2428 if (textarget
== 0) {
2430 /* We're being called by glFramebufferTexture() and textarget
2433 switch (texObj
->Target
) {
2435 case GL_TEXTURE_1D_ARRAY_EXT
:
2436 case GL_TEXTURE_2D_ARRAY_EXT
:
2437 case GL_TEXTURE_CUBE_MAP
:
2438 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2439 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2444 case GL_TEXTURE_RECTANGLE
:
2445 case GL_TEXTURE_2D_MULTISAMPLE
:
2446 /* These texture types are valid to pass to
2447 * glFramebufferTexture(), but since they aren't layered, it
2448 * is equivalent to calling glFramebufferTexture{1D,2D}().
2452 textarget
= texObj
->Target
;
2459 /* We're being called by glFramebufferTextureLayer() and
2460 * textarget is not used. The only legal texture types for
2461 * that function are 3D and 1D/2D arrays textures.
2463 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2464 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2465 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2466 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2467 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2471 /* Make sure textarget is consistent with the texture's type */
2472 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2473 ? !_mesa_is_cube_face(textarget
)
2474 : (texObj
->Target
!= textarget
);
2478 /* can't render to a non-existant texture */
2479 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2480 "glFramebufferTexture%s(non existant texture)",
2486 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2487 "glFramebufferTexture%s(texture target mismatch)",
2492 if (texObj
->Target
== GL_TEXTURE_3D
) {
2493 const GLuint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2494 if (zoffset
>= maxSize
) {
2495 _mesa_error(ctx
, GL_INVALID_VALUE
,
2496 "glFramebufferTexture%s(zoffset)", caller
);
2500 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2501 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2502 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2503 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2504 if (zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
2505 _mesa_error(ctx
, GL_INVALID_VALUE
,
2506 "glFramebufferTexture%s(layer)", caller
);
2511 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2513 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2514 _mesa_error(ctx
, GL_INVALID_VALUE
,
2515 "glFramebufferTexture%s(level)", caller
);
2520 att
= get_attachment(ctx
, fb
, attachment
);
2522 _mesa_error(ctx
, GL_INVALID_ENUM
,
2523 "glFramebufferTexture%s(attachment)", caller
);
2527 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2529 mtx_lock(&fb
->Mutex
);
2531 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2532 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2533 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2534 _mesa_tex_target_to_face(textarget
) ==
2535 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2536 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2537 /* The texture object is already attached to the stencil attachment
2538 * point. Don't create a new renderbuffer; just reuse the stencil
2539 * attachment's. This is required to prevent a GL error in
2540 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2542 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2544 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2545 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2546 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2547 _mesa_tex_target_to_face(textarget
) ==
2548 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2549 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2550 /* As above, but with depth and stencil transposed. */
2551 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2554 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2555 level
, zoffset
, layered
);
2556 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2557 /* Above we created a new renderbuffer and attached it to the
2558 * depth attachment point. Now attach it to the stencil attachment
2561 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2562 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2567 /* Set the render-to-texture flag. We'll check this flag in
2568 * glTexImage() and friends to determine if we need to revalidate
2569 * any FBOs that might be rendering into this texture.
2570 * This flag never gets cleared since it's non-trivial to determine
2571 * when all FBOs might be done rendering to this texture. That's OK
2572 * though since it's uncommon to render to a texture then repeatedly
2573 * call glTexImage() to change images in the texture.
2575 texObj
->_RenderToTexture
= GL_TRUE
;
2578 remove_attachment(ctx
, att
);
2579 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2580 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2581 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2585 invalidate_framebuffer(fb
);
2587 mtx_unlock(&fb
->Mutex
);
2592 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2593 GLenum textarget
, GLuint texture
, GLint level
)
2595 GET_CURRENT_CONTEXT(ctx
);
2600 switch (textarget
) {
2604 case GL_TEXTURE_1D_ARRAY
:
2605 error
= !ctx
->Extensions
.EXT_texture_array
;
2612 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2613 "glFramebufferTexture1D(textarget=%s)",
2614 _mesa_lookup_enum_by_nr(textarget
));
2619 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2620 level
, 0, GL_FALSE
);
2625 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2626 GLenum textarget
, GLuint texture
, GLint level
)
2628 GET_CURRENT_CONTEXT(ctx
);
2633 switch (textarget
) {
2637 case GL_TEXTURE_RECTANGLE
:
2638 error
= _mesa_is_gles(ctx
)
2639 || !ctx
->Extensions
.NV_texture_rectangle
;
2641 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2642 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2643 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2644 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2645 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2646 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2647 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2649 case GL_TEXTURE_2D_ARRAY
:
2650 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2651 || !ctx
->Extensions
.EXT_texture_array
;
2653 case GL_TEXTURE_2D_MULTISAMPLE
:
2654 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2655 error
= _mesa_is_gles(ctx
)
2656 || !ctx
->Extensions
.ARB_texture_multisample
;
2663 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2664 "glFramebufferTexture2D(textarget=%s)",
2665 _mesa_lookup_enum_by_nr(textarget
));
2670 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2671 level
, 0, GL_FALSE
);
2676 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2677 GLenum textarget
, GLuint texture
,
2678 GLint level
, GLint zoffset
)
2680 GET_CURRENT_CONTEXT(ctx
);
2682 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2683 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2684 "glFramebufferTexture3D(textarget)");
2688 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2689 level
, zoffset
, GL_FALSE
);
2694 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2695 GLuint texture
, GLint level
, GLint layer
)
2697 GET_CURRENT_CONTEXT(ctx
);
2699 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2700 level
, layer
, GL_FALSE
);
2705 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2706 GLuint texture
, GLint level
)
2708 GET_CURRENT_CONTEXT(ctx
);
2710 if (_mesa_has_geometry_shaders(ctx
)) {
2711 framebuffer_texture(ctx
, "", target
, attachment
, 0, texture
,
2714 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2715 "unsupported function (glFramebufferTexture) called");
2721 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2722 GLenum renderbufferTarget
,
2723 GLuint renderbuffer
)
2725 struct gl_renderbuffer_attachment
*att
;
2726 struct gl_framebuffer
*fb
;
2727 struct gl_renderbuffer
*rb
;
2728 GET_CURRENT_CONTEXT(ctx
);
2730 fb
= get_framebuffer_target(ctx
, target
);
2732 _mesa_error(ctx
, GL_INVALID_ENUM
,
2733 "glFramebufferRenderbuffer(target)");
2737 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2738 _mesa_error(ctx
, GL_INVALID_ENUM
,
2739 "glFramebufferRenderbuffer(renderbufferTarget)");
2743 if (_mesa_is_winsys_fbo(fb
)) {
2744 /* Can't attach new renderbuffers to a window system framebuffer */
2745 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbuffer");
2749 att
= get_attachment(ctx
, fb
, attachment
);
2751 _mesa_error(ctx
, GL_INVALID_ENUM
,
2752 "glFramebufferRenderbuffer(invalid attachment %s)",
2753 _mesa_lookup_enum_by_nr(attachment
));
2758 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2760 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2761 "glFramebufferRenderbuffer(non-existant"
2762 " renderbuffer %u)", renderbuffer
);
2765 else if (rb
== &DummyRenderbuffer
) {
2766 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2767 "glFramebufferRenderbuffer(renderbuffer %u)",
2773 /* remove renderbuffer attachment */
2777 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2778 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2779 /* make sure the renderbuffer is a depth/stencil format */
2780 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2781 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2782 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2783 "glFramebufferRenderbuffer(renderbuffer"
2784 " is not DEPTH_STENCIL format)");
2789 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2791 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2792 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2794 /* Some subsequent GL commands may depend on the framebuffer's visual
2795 * after the binding is updated. Update visual info now.
2797 _mesa_update_framebuffer_visual(ctx
, fb
);
2802 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2803 GLenum pname
, GLint
*params
)
2805 const struct gl_renderbuffer_attachment
*att
;
2806 struct gl_framebuffer
*buffer
;
2808 GET_CURRENT_CONTEXT(ctx
);
2810 /* The error differs in GL and GLES. */
2811 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2813 buffer
= get_framebuffer_target(ctx
, target
);
2815 _mesa_error(ctx
, GL_INVALID_ENUM
,
2816 "glGetFramebufferAttachmentParameteriv(target)");
2820 if (_mesa_is_winsys_fbo(buffer
)) {
2821 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2824 * "If the framebuffer currently bound to target is zero, then
2825 * INVALID_OPERATION is generated."
2827 * The EXT_framebuffer_object spec has the same wording, and the
2828 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2831 if ((!_mesa_is_desktop_gl(ctx
) ||
2832 !ctx
->Extensions
.ARB_framebuffer_object
)
2833 && !_mesa_is_gles3(ctx
)) {
2834 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2835 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2839 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2840 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2841 _mesa_error(ctx
, GL_INVALID_ENUM
,
2842 "glGetFramebufferAttachmentParameteriv(attachment)");
2845 /* the default / window-system FBO */
2846 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2849 /* user-created framebuffer FBO */
2850 att
= get_attachment(ctx
, buffer
, attachment
);
2854 _mesa_error(ctx
, GL_INVALID_ENUM
,
2855 "glGetFramebufferAttachmentParameteriv(attachment)");
2859 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2860 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2861 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
2862 /* This behavior is first specified in OpenGL 4.4 specification.
2864 * From the OpenGL 4.4 spec page 275:
2865 * "This query cannot be performed for a combined depth+stencil
2866 * attachment, since it does not have a single format."
2868 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2869 "glGetFramebufferAttachmentParameteriv("
2870 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
2871 " is invalid for depth+stencil attachment)");
2874 /* the depth and stencil attachments must point to the same buffer */
2875 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2876 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2877 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2878 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2879 "glGetFramebufferAttachmentParameteriv(DEPTH/STENCIL"
2880 " attachments differ)");
2885 /* No need to flush here */
2888 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2889 *params
= _mesa_is_winsys_fbo(buffer
)
2890 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2892 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2893 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2894 *params
= att
->Renderbuffer
->Name
;
2896 else if (att
->Type
== GL_TEXTURE
) {
2897 *params
= att
->Texture
->Name
;
2900 assert(att
->Type
== GL_NONE
);
2901 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2904 goto invalid_pname_enum
;
2908 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2909 if (att
->Type
== GL_TEXTURE
) {
2910 *params
= att
->TextureLevel
;
2912 else if (att
->Type
== GL_NONE
) {
2913 _mesa_error(ctx
, err
,
2914 "glGetFramebufferAttachmentParameteriv(pname)");
2917 goto invalid_pname_enum
;
2920 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2921 if (att
->Type
== GL_TEXTURE
) {
2922 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2923 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2929 else if (att
->Type
== GL_NONE
) {
2930 _mesa_error(ctx
, err
,
2931 "glGetFramebufferAttachmentParameteriv(pname)");
2934 goto invalid_pname_enum
;
2937 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2938 if (ctx
->API
== API_OPENGLES
) {
2939 goto invalid_pname_enum
;
2940 } else if (att
->Type
== GL_NONE
) {
2941 _mesa_error(ctx
, err
,
2942 "glGetFramebufferAttachmentParameteriv(pname)");
2943 } else if (att
->Type
== GL_TEXTURE
) {
2944 if (att
->Texture
&& (att
->Texture
->Target
== GL_TEXTURE_3D
||
2945 att
->Texture
->Target
== GL_TEXTURE_2D_ARRAY
)) {
2946 *params
= att
->Zoffset
;
2953 goto invalid_pname_enum
;
2956 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2957 if ((!_mesa_is_desktop_gl(ctx
) ||
2958 !ctx
->Extensions
.ARB_framebuffer_object
)
2959 && !_mesa_is_gles3(ctx
)) {
2960 goto invalid_pname_enum
;
2962 else if (att
->Type
== GL_NONE
) {
2963 _mesa_error(ctx
, err
,
2964 "glGetFramebufferAttachmentParameteriv(pname)");
2967 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2969 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2972 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2973 * if the sRGB conversion is unsupported. */
2974 *params
= GL_LINEAR
;
2978 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2979 if ((ctx
->API
!= API_OPENGL_COMPAT
||
2980 !ctx
->Extensions
.ARB_framebuffer_object
)
2981 && ctx
->API
!= API_OPENGL_CORE
2982 && !_mesa_is_gles3(ctx
)) {
2983 goto invalid_pname_enum
;
2985 else if (att
->Type
== GL_NONE
) {
2986 _mesa_error(ctx
, err
,
2987 "glGetFramebufferAttachmentParameteriv(pname)");
2990 mesa_format format
= att
->Renderbuffer
->Format
;
2992 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2995 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2996 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2997 * generate an INVALID_OPERATION error.
2999 if (_mesa_is_gles3(ctx
) &&
3000 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3001 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3002 "glGetFramebufferAttachmentParameteriv(cannot query "
3003 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
3004 "GL_DEPTH_STENCIL_ATTACHMENT");
3008 if (format
== MESA_FORMAT_S_UINT8
) {
3012 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
3013 /* depends on the attachment parameter */
3014 if (attachment
== GL_STENCIL_ATTACHMENT
) {
3022 *params
= _mesa_get_format_datatype(format
);
3026 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
3027 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
3028 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
3029 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
3030 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
3031 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
3032 if ((!_mesa_is_desktop_gl(ctx
) ||
3033 !ctx
->Extensions
.ARB_framebuffer_object
)
3034 && !_mesa_is_gles3(ctx
)) {
3035 goto invalid_pname_enum
;
3037 else if (att
->Type
== GL_NONE
) {
3038 _mesa_error(ctx
, err
,
3039 "glGetFramebufferAttachmentParameteriv(pname)");
3041 else if (att
->Texture
) {
3042 const struct gl_texture_image
*texImage
=
3043 _mesa_select_tex_image(att
->Texture
, att
->Texture
->Target
,
3046 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
3047 texImage
->TexFormat
);
3053 else if (att
->Renderbuffer
) {
3054 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
3055 att
->Renderbuffer
->Format
);
3058 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
3059 " invalid FBO attachment structure");
3062 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
3063 if (!_mesa_has_geometry_shaders(ctx
)) {
3064 goto invalid_pname_enum
;
3065 } else if (att
->Type
== GL_TEXTURE
) {
3066 *params
= att
->Layered
;
3067 } else if (att
->Type
== GL_NONE
) {
3068 _mesa_error(ctx
, err
,
3069 "glGetFramebufferAttachmentParameteriv(pname)");
3071 goto invalid_pname_enum
;
3075 goto invalid_pname_enum
;
3081 _mesa_error(ctx
, GL_INVALID_ENUM
,
3082 "glGetFramebufferAttachmentParameteriv(pname)");
3088 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3089 const GLenum
*attachments
, GLint x
, GLint y
,
3090 GLsizei width
, GLsizei height
, const char *name
)
3093 struct gl_framebuffer
*fb
;
3094 GET_CURRENT_CONTEXT(ctx
);
3096 fb
= get_framebuffer_target(ctx
, target
);
3098 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3102 if (numAttachments
< 0) {
3103 _mesa_error(ctx
, GL_INVALID_VALUE
,
3104 "%s(numAttachments < 0)", name
);
3108 /* The GL_ARB_invalidate_subdata spec says:
3110 * "If an attachment is specified that does not exist in the
3111 * framebuffer bound to <target>, it is ignored."
3115 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3116 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3117 * INVALID_OPERATION is generated."
3119 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3120 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3121 * set of retrictions).
3123 for (i
= 0; i
< numAttachments
; i
++) {
3124 if (_mesa_is_winsys_fbo(fb
)) {
3125 switch (attachments
[i
]) {
3131 /* Accumulation buffers and auxilary buffers were removed in
3132 * OpenGL 3.1, and they never existed in OpenGL ES.
3134 if (ctx
->API
!= API_OPENGL_COMPAT
)
3144 case GL_FRONT_RIGHT
:
3145 if (!_mesa_is_desktop_gl(ctx
))
3152 switch (attachments
[i
]) {
3153 case GL_DEPTH_ATTACHMENT
:
3154 case GL_STENCIL_ATTACHMENT
:
3156 case GL_DEPTH_STENCIL_ATTACHMENT
:
3157 /* GL_DEPTH_STENCIL_ATTACHMENT is a valid attachment point only
3158 * in desktop and ES 3.0 profiles. Note that OES_packed_depth_stencil
3159 * extension does not make this attachment point valid on ES 2.0.
3161 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
))
3164 case GL_COLOR_ATTACHMENT0
:
3165 case GL_COLOR_ATTACHMENT1
:
3166 case GL_COLOR_ATTACHMENT2
:
3167 case GL_COLOR_ATTACHMENT3
:
3168 case GL_COLOR_ATTACHMENT4
:
3169 case GL_COLOR_ATTACHMENT5
:
3170 case GL_COLOR_ATTACHMENT6
:
3171 case GL_COLOR_ATTACHMENT7
:
3172 case GL_COLOR_ATTACHMENT8
:
3173 case GL_COLOR_ATTACHMENT9
:
3174 case GL_COLOR_ATTACHMENT10
:
3175 case GL_COLOR_ATTACHMENT11
:
3176 case GL_COLOR_ATTACHMENT12
:
3177 case GL_COLOR_ATTACHMENT13
:
3178 case GL_COLOR_ATTACHMENT14
:
3179 case GL_COLOR_ATTACHMENT15
: {
3180 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3181 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3182 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3183 "%s(attachment >= max. color attachments)", name
);
3194 /* We don't actually do anything for this yet. Just return after
3195 * validating the parameters and generating the required errors.
3200 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3206 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3207 const GLenum
*attachments
, GLint x
, GLint y
,
3208 GLsizei width
, GLsizei height
)
3210 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3211 x
, y
, width
, height
,
3212 "glInvalidateSubFramebuffer");
3217 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3218 const GLenum
*attachments
)
3220 /* The GL_ARB_invalidate_subdata spec says:
3224 * void InvalidateFramebuffer(enum target,
3225 * sizei numAttachments,
3226 * const enum *attachments);
3228 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3229 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3230 * <MAX_VIEWPORT_DIMS[1]> respectively."
3232 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3234 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3235 "glInvalidateFramebuffer");
3240 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3241 const GLenum
*attachments
)
3243 struct gl_framebuffer
*fb
;
3246 GET_CURRENT_CONTEXT(ctx
);
3248 fb
= get_framebuffer_target(ctx
, target
);
3250 _mesa_error(ctx
, GL_INVALID_ENUM
,
3251 "glDiscardFramebufferEXT(target %s)",
3252 _mesa_lookup_enum_by_nr(target
));
3256 if (numAttachments
< 0) {
3257 _mesa_error(ctx
, GL_INVALID_VALUE
,
3258 "glDiscardFramebufferEXT(numAttachments < 0)");
3262 for (i
= 0; i
< numAttachments
; i
++) {
3263 switch (attachments
[i
]) {
3267 if (_mesa_is_user_fbo(fb
))
3270 case GL_COLOR_ATTACHMENT0
:
3271 case GL_DEPTH_ATTACHMENT
:
3272 case GL_STENCIL_ATTACHMENT
:
3273 if (_mesa_is_winsys_fbo(fb
))
3281 if (ctx
->Driver
.DiscardFramebuffer
)
3282 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3287 _mesa_error(ctx
, GL_INVALID_ENUM
,
3288 "glDiscardFramebufferEXT(attachment %s)",
3289 _mesa_lookup_enum_by_nr(attachments
[i
]));