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
);
505 invalidate_framebuffer(fb
);
507 mtx_unlock(&fb
->Mutex
);
512 * Fallback for ctx->Driver.ValidateFramebuffer()
513 * Check if the renderbuffer's formats are supported by the software
515 * Drivers should probably override this.
518 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
521 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
522 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
524 switch (rb
->_BaseFormat
) {
526 case GL_LUMINANCE_ALPHA
:
531 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
535 switch (rb
->Format
) {
536 /* XXX This list is likely incomplete. */
537 case MESA_FORMAT_R9G9B9E5_FLOAT
:
538 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
541 /* render buffer format is supported by software rendering */
550 * Return true if the framebuffer has a combined depth/stencil
551 * renderbuffer attached.
554 _mesa_has_depthstencil_combined(const struct gl_framebuffer
*fb
)
556 const struct gl_renderbuffer_attachment
*depth
=
557 &fb
->Attachment
[BUFFER_DEPTH
];
558 const struct gl_renderbuffer_attachment
*stencil
=
559 &fb
->Attachment
[BUFFER_STENCIL
];
561 if (depth
->Type
== stencil
->Type
) {
562 if (depth
->Type
== GL_RENDERBUFFER_EXT
&&
563 depth
->Renderbuffer
== stencil
->Renderbuffer
)
566 if (depth
->Type
== GL_TEXTURE
&&
567 depth
->Texture
== stencil
->Texture
)
579 att_incomplete(const char *msg
)
581 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
582 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
591 fbo_incomplete(struct gl_context
*ctx
, const char *msg
, int index
)
593 static GLuint msg_id
;
595 _mesa_gl_debug(ctx
, &msg_id
,
596 MESA_DEBUG_TYPE_OTHER
,
597 MESA_DEBUG_SEVERITY_MEDIUM
,
598 "FBO incomplete: %s [%d]\n", msg
, index
);
600 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
601 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
607 * Is the given base format a legal format for a color renderbuffer?
610 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
612 switch (baseFormat
) {
617 case GL_LUMINANCE_ALPHA
:
620 return ctx
->API
== API_OPENGL_COMPAT
&&
621 ctx
->Extensions
.ARB_framebuffer_object
;
624 return ctx
->Extensions
.ARB_texture_rg
;
632 * Is the given base format a legal format for a color renderbuffer?
635 is_format_color_renderable(const struct gl_context
*ctx
, mesa_format format
,
636 GLenum internalFormat
)
638 const GLenum baseFormat
=
639 _mesa_get_format_base_format(format
);
642 valid
= _mesa_is_legal_color_format(ctx
, baseFormat
);
643 if (!valid
|| _mesa_is_desktop_gl(ctx
)) {
647 /* Reject additional cases for GLES */
648 switch (internalFormat
) {
668 if (format
== MESA_FORMAT_B10G10R10A2_UNORM
&&
669 internalFormat
!= GL_RGB10_A2
) {
678 * Is the given base format a legal format for a depth/stencil renderbuffer?
681 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
683 switch (baseFormat
) {
684 case GL_DEPTH_COMPONENT
:
685 case GL_DEPTH_STENCIL_EXT
:
694 * Test if an attachment point is complete and update its Complete field.
695 * \param format if GL_COLOR, this is a color attachment point,
696 * if GL_DEPTH, this is a depth component attachment point,
697 * if GL_STENCIL, this is a stencil component attachment point.
700 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
701 struct gl_renderbuffer_attachment
*att
)
703 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
705 /* assume complete */
706 att
->Complete
= GL_TRUE
;
708 /* Look for reasons why the attachment might be incomplete */
709 if (att
->Type
== GL_TEXTURE
) {
710 const struct gl_texture_object
*texObj
= att
->Texture
;
711 struct gl_texture_image
*texImage
;
715 att_incomplete("no texobj");
716 att
->Complete
= GL_FALSE
;
720 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
722 att_incomplete("no teximage");
723 att
->Complete
= GL_FALSE
;
726 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
727 att_incomplete("teximage width/height=0");
728 att
->Complete
= GL_FALSE
;
732 switch (texObj
->Target
) {
734 if (att
->Zoffset
>= texImage
->Depth
) {
735 att_incomplete("bad z offset");
736 att
->Complete
= GL_FALSE
;
740 case GL_TEXTURE_1D_ARRAY
:
741 if (att
->Zoffset
>= texImage
->Height
) {
742 att_incomplete("bad 1D-array layer");
743 att
->Complete
= GL_FALSE
;
747 case GL_TEXTURE_2D_ARRAY
:
748 if (att
->Zoffset
>= texImage
->Depth
) {
749 att_incomplete("bad 2D-array layer");
750 att
->Complete
= GL_FALSE
;
754 case GL_TEXTURE_CUBE_MAP_ARRAY
:
755 if (att
->Zoffset
>= texImage
->Depth
) {
756 att_incomplete("bad cube-array layer");
757 att
->Complete
= GL_FALSE
;
763 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
765 if (format
== GL_COLOR
) {
766 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
767 att_incomplete("bad format");
768 att
->Complete
= GL_FALSE
;
771 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
772 att_incomplete("compressed internalformat");
773 att
->Complete
= GL_FALSE
;
777 else if (format
== GL_DEPTH
) {
778 if (baseFormat
== GL_DEPTH_COMPONENT
) {
781 else if (ctx
->Extensions
.ARB_depth_texture
&&
782 baseFormat
== GL_DEPTH_STENCIL
) {
786 att
->Complete
= GL_FALSE
;
787 att_incomplete("bad depth format");
792 ASSERT(format
== GL_STENCIL
);
793 if (ctx
->Extensions
.ARB_depth_texture
&&
794 baseFormat
== GL_DEPTH_STENCIL
) {
798 /* no such thing as stencil-only textures */
799 att_incomplete("illegal stencil texture");
800 att
->Complete
= GL_FALSE
;
805 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
806 const GLenum baseFormat
=
807 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
809 ASSERT(att
->Renderbuffer
);
810 if (!att
->Renderbuffer
->InternalFormat
||
811 att
->Renderbuffer
->Width
< 1 ||
812 att
->Renderbuffer
->Height
< 1) {
813 att_incomplete("0x0 renderbuffer");
814 att
->Complete
= GL_FALSE
;
817 if (format
== GL_COLOR
) {
818 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
819 att_incomplete("bad renderbuffer color format");
820 att
->Complete
= GL_FALSE
;
824 else if (format
== GL_DEPTH
) {
825 if (baseFormat
== GL_DEPTH_COMPONENT
) {
828 else if (baseFormat
== GL_DEPTH_STENCIL
) {
832 att_incomplete("bad renderbuffer depth format");
833 att
->Complete
= GL_FALSE
;
838 assert(format
== GL_STENCIL
);
839 if (baseFormat
== GL_STENCIL_INDEX
||
840 baseFormat
== GL_DEPTH_STENCIL
) {
844 att
->Complete
= GL_FALSE
;
845 att_incomplete("bad renderbuffer stencil format");
851 ASSERT(att
->Type
== GL_NONE
);
859 * Test if the given framebuffer object is complete and update its
860 * Status field with the results.
861 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
862 * driver to make hardware-specific validation/completeness checks.
863 * Also update the framebuffer's Width and Height fields if the
864 * framebuffer is complete.
867 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
868 struct gl_framebuffer
*fb
)
871 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
872 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
873 GLint numSamples
= -1;
874 GLint fixedSampleLocations
= -1;
877 /* Covers max_layer_count, is_layered, and layer_tex_target */
878 bool layer_info_valid
= false;
879 GLuint max_layer_count
= 0, att_layer_count
;
880 bool is_layered
= false;
881 GLenum layer_tex_target
= 0;
883 assert(_mesa_is_user_fbo(fb
));
885 /* we're changing framebuffer fields here */
886 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
891 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
892 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
894 /* Start at -2 to more easily loop over all attachment points.
899 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
900 struct gl_renderbuffer_attachment
*att
;
902 mesa_format attFormat
;
903 GLenum att_tex_target
= GL_NONE
;
906 * XXX for ARB_fbo, only check color buffers that are named by
907 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
910 /* check for attachment completeness
913 att
= &fb
->Attachment
[BUFFER_DEPTH
];
914 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
915 if (!att
->Complete
) {
916 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
917 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
922 att
= &fb
->Attachment
[BUFFER_STENCIL
];
923 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
924 if (!att
->Complete
) {
925 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
926 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
931 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
932 test_attachment_completeness(ctx
, GL_COLOR
, att
);
933 if (!att
->Complete
) {
934 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
935 fbo_incomplete(ctx
, "color attachment incomplete", i
);
940 /* get width, height, format of the renderbuffer/texture
942 if (att
->Type
== GL_TEXTURE
) {
943 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
944 att_tex_target
= att
->Texture
->Target
;
945 minWidth
= MIN2(minWidth
, texImg
->Width
);
946 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
947 minHeight
= MIN2(minHeight
, texImg
->Height
);
948 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
949 f
= texImg
->_BaseFormat
;
950 attFormat
= texImg
->TexFormat
;
953 if (!is_format_color_renderable(ctx
, attFormat
,
954 texImg
->InternalFormat
) &&
955 !is_legal_depth_format(ctx
, f
)) {
956 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
957 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
962 numSamples
= texImg
->NumSamples
;
963 else if (numSamples
!= texImg
->NumSamples
) {
964 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
965 fbo_incomplete(ctx
, "inconsistent sample count", -1);
969 if (fixedSampleLocations
< 0)
970 fixedSampleLocations
= texImg
->FixedSampleLocations
;
971 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
972 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
973 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
977 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
978 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
979 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
980 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
981 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
982 f
= att
->Renderbuffer
->InternalFormat
;
983 attFormat
= att
->Renderbuffer
->Format
;
987 numSamples
= att
->Renderbuffer
->NumSamples
;
988 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
989 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
990 fbo_incomplete(ctx
, "inconsistent sample count", -1);
994 /* RENDERBUFFER has fixedSampleLocations implicitly true */
995 if (fixedSampleLocations
< 0)
996 fixedSampleLocations
= GL_TRUE
;
997 else if (fixedSampleLocations
!= GL_TRUE
) {
998 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
999 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1004 assert(att
->Type
== GL_NONE
);
1008 /* check if integer color */
1009 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1011 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1013 GLenum type
= _mesa_get_format_datatype(attFormat
);
1015 fb
->_AllColorBuffersFixedPoint
=
1016 fb
->_AllColorBuffersFixedPoint
&&
1017 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1019 fb
->_HasSNormOrFloatColorBuffer
=
1020 fb
->_HasSNormOrFloatColorBuffer
||
1021 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1024 /* Error-check width, height, format */
1025 if (numImages
== 1) {
1032 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1033 /* check that width, height, format are same */
1034 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1035 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1036 fbo_incomplete(ctx
, "width or height mismatch", -1);
1039 /* check that all color buffers are the same format */
1040 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1041 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1042 fbo_incomplete(ctx
, "format mismatch", -1);
1048 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1050 if (att
->Type
== GL_RENDERBUFFER
&&
1051 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1052 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1053 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1057 /* Check that layered rendering is consistent. */
1059 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1060 att_layer_count
= 6;
1062 att_layer_count
= att
->Renderbuffer
->Depth
;
1064 att_layer_count
= 0;
1066 if (!layer_info_valid
) {
1067 is_layered
= att
->Layered
;
1068 max_layer_count
= att_layer_count
;
1069 layer_tex_target
= att_tex_target
;
1070 layer_info_valid
= true;
1071 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1072 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1073 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1075 } else if (is_layered
!= att
->Layered
) {
1076 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1078 "framebuffer attachment layer mode is inconsistent",
1081 } else if (att_layer_count
> max_layer_count
) {
1082 max_layer_count
= att_layer_count
;
1086 fb
->MaxNumLayers
= max_layer_count
;
1088 if (numImages
== 0) {
1089 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1090 fbo_incomplete(ctx
, "no attachments", -1);
1094 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1095 /* Check that all DrawBuffers are present */
1096 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1097 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1098 const struct gl_renderbuffer_attachment
*att
1099 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1101 if (att
->Type
== GL_NONE
) {
1102 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1103 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1109 /* Check that the ReadBuffer is present */
1110 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1111 const struct gl_renderbuffer_attachment
*att
1112 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1114 if (att
->Type
== GL_NONE
) {
1115 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1116 fbo_incomplete(ctx
, "missing readbuffer", -1);
1122 /* Provisionally set status = COMPLETE ... */
1123 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1125 /* ... but the driver may say the FB is incomplete.
1126 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1129 if (ctx
->Driver
.ValidateFramebuffer
) {
1130 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1131 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1132 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1136 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1138 * Note that if ARB_framebuffer_object is supported and the attached
1139 * renderbuffers/textures are different sizes, the framebuffer
1140 * width/height will be set to the smallest width/height.
1142 fb
->Width
= minWidth
;
1143 fb
->Height
= minHeight
;
1145 /* finally, update the visual info for the framebuffer */
1146 _mesa_update_framebuffer_visual(ctx
, fb
);
1151 GLboolean GLAPIENTRY
1152 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1154 GET_CURRENT_CONTEXT(ctx
);
1155 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1157 struct gl_renderbuffer
*rb
=
1158 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1159 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1167 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1169 struct gl_renderbuffer
*newRb
;
1170 GET_CURRENT_CONTEXT(ctx
);
1172 if (target
!= GL_RENDERBUFFER_EXT
) {
1173 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1177 /* No need to flush here since the render buffer binding has no
1178 * effect on rendering state.
1182 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1183 if (newRb
== &DummyRenderbuffer
) {
1184 /* ID was reserved, but no real renderbuffer object made yet */
1187 else if (!newRb
&& !allow_user_names
) {
1188 /* All RB IDs must be Gen'd */
1189 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1194 /* create new renderbuffer object */
1195 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1197 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
1200 ASSERT(newRb
->AllocStorage
);
1201 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1202 newRb
->RefCount
= 1; /* referenced by hash table */
1209 ASSERT(newRb
!= &DummyRenderbuffer
);
1211 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1215 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1217 GET_CURRENT_CONTEXT(ctx
);
1219 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1220 * entry point, but they allow the use of user-generated names.
1222 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1226 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1228 /* This function should not be in the dispatch table for core profile /
1229 * OpenGL 3.1, so execution should never get here in those cases -- no
1230 * need for an explicit test.
1232 bind_renderbuffer(target
, renderbuffer
, true);
1237 * Remove the specified renderbuffer or texture from any attachment point in
1241 * \c true if the renderbuffer was detached from an attachment point. \c
1245 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1246 struct gl_framebuffer
*fb
,
1250 bool progress
= false;
1252 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1253 if (fb
->Attachment
[i
].Texture
== att
1254 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1255 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1260 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1261 * Completeness," of the OpenGL 3.1 spec says:
1263 * "Performing any of the following actions may change whether the
1264 * framebuffer is considered complete or incomplete:
1268 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1269 * containing an image that is attached to a framebuffer object
1270 * that is bound to the framebuffer."
1273 invalidate_framebuffer(fb
);
1280 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1283 GET_CURRENT_CONTEXT(ctx
);
1285 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1287 for (i
= 0; i
< n
; i
++) {
1288 if (renderbuffers
[i
] > 0) {
1289 struct gl_renderbuffer
*rb
;
1290 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1292 /* check if deleting currently bound renderbuffer object */
1293 if (rb
== ctx
->CurrentRenderbuffer
) {
1295 ASSERT(rb
->RefCount
>= 2);
1296 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1299 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1300 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1301 * of the OpenGL 3.1 spec says:
1303 * "If a renderbuffer object is deleted while its image is
1304 * attached to one or more attachment points in the currently
1305 * bound framebuffer, then it is as if FramebufferRenderbuffer
1306 * had been called, with a renderbuffer of 0, for each
1307 * attachment point to which this image was attached in the
1308 * currently bound framebuffer. In other words, this
1309 * renderbuffer image is first detached from all attachment
1310 * points in the currently bound framebuffer. Note that the
1311 * renderbuffer image is specifically not detached from any
1312 * non-bound framebuffers. Detaching the image from any
1313 * non-bound framebuffers is the responsibility of the
1316 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1317 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1319 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1320 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1321 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1324 /* Remove from hash table immediately, to free the ID.
1325 * But the object will not be freed until it's no longer
1326 * referenced anywhere else.
1328 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1330 if (rb
!= &DummyRenderbuffer
) {
1331 /* no longer referenced by hash table */
1332 _mesa_reference_renderbuffer(&rb
, NULL
);
1341 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1343 GET_CURRENT_CONTEXT(ctx
);
1348 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1355 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1357 for (i
= 0; i
< n
; i
++) {
1358 GLuint name
= first
+ i
;
1359 renderbuffers
[i
] = name
;
1360 /* insert dummy placeholder into hash table */
1361 mtx_lock(&ctx
->Shared
->Mutex
);
1362 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1363 mtx_unlock(&ctx
->Shared
->Mutex
);
1369 * Given an internal format token for a render buffer, return the
1370 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1371 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1372 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1374 * This is similar to _mesa_base_tex_format() but the set of valid
1375 * internal formats is different.
1377 * Note that even if a format is determined to be legal here, validation
1378 * of the FBO may fail if the format is not supported by the driver/GPU.
1380 * \param internalFormat as passed to glRenderbufferStorage()
1381 * \return the base internal format, or 0 if internalFormat is illegal
1384 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1387 * Notes: some formats such as alpha, luminance, etc. were added
1388 * with GL_ARB_framebuffer_object.
1390 switch (internalFormat
) {
1396 return (ctx
->API
== API_OPENGL_COMPAT
&&
1397 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1401 case GL_LUMINANCE12
:
1402 case GL_LUMINANCE16
:
1403 return (ctx
->API
== API_OPENGL_COMPAT
&&
1404 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1405 case GL_LUMINANCE_ALPHA
:
1406 case GL_LUMINANCE4_ALPHA4
:
1407 case GL_LUMINANCE6_ALPHA2
:
1408 case GL_LUMINANCE8_ALPHA8
:
1409 case GL_LUMINANCE12_ALPHA4
:
1410 case GL_LUMINANCE12_ALPHA12
:
1411 case GL_LUMINANCE16_ALPHA16
:
1412 return (ctx
->API
== API_OPENGL_COMPAT
&&
1413 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1417 case GL_INTENSITY12
:
1418 case GL_INTENSITY16
:
1419 return (ctx
->API
== API_OPENGL_COMPAT
&&
1420 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1430 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1432 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1441 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1443 case GL_SRGB8_ALPHA8_EXT
:
1444 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1445 case GL_STENCIL_INDEX
:
1446 case GL_STENCIL_INDEX1_EXT
:
1447 case GL_STENCIL_INDEX4_EXT
:
1448 case GL_STENCIL_INDEX16_EXT
:
1449 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1450 * OpenGL ES, but Mesa does not currently support them.
1452 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1453 case GL_STENCIL_INDEX8_EXT
:
1454 return GL_STENCIL_INDEX
;
1455 case GL_DEPTH_COMPONENT
:
1456 case GL_DEPTH_COMPONENT32
:
1457 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1458 case GL_DEPTH_COMPONENT16
:
1459 case GL_DEPTH_COMPONENT24
:
1460 return GL_DEPTH_COMPONENT
;
1461 case GL_DEPTH_STENCIL
:
1462 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1463 case GL_DEPTH24_STENCIL8
:
1464 return GL_DEPTH_STENCIL
;
1465 case GL_DEPTH_COMPONENT32F
:
1466 return ctx
->Version
>= 30
1467 || (ctx
->API
== API_OPENGL_COMPAT
&&
1468 ctx
->Extensions
.ARB_depth_buffer_float
)
1469 ? GL_DEPTH_COMPONENT
: 0;
1470 case GL_DEPTH32F_STENCIL8
:
1471 return ctx
->Version
>= 30
1472 || (ctx
->API
== API_OPENGL_COMPAT
&&
1473 ctx
->Extensions
.ARB_depth_buffer_float
)
1474 ? GL_DEPTH_STENCIL
: 0;
1477 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1480 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1484 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1487 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1489 /* signed normalized texture formats */
1493 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1498 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1502 case GL_RGB16_SNORM
:
1503 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1506 case GL_RGBA8_SNORM
:
1507 case GL_RGBA16_SNORM
:
1508 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1510 case GL_ALPHA_SNORM
:
1511 case GL_ALPHA8_SNORM
:
1512 case GL_ALPHA16_SNORM
:
1513 return ctx
->API
== API_OPENGL_COMPAT
&&
1514 ctx
->Extensions
.EXT_texture_snorm
&&
1515 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1516 case GL_LUMINANCE_SNORM
:
1517 case GL_LUMINANCE8_SNORM
:
1518 case GL_LUMINANCE16_SNORM
:
1519 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1521 case GL_LUMINANCE_ALPHA_SNORM
:
1522 case GL_LUMINANCE8_ALPHA8_SNORM
:
1523 case GL_LUMINANCE16_ALPHA16_SNORM
:
1524 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1525 ? GL_LUMINANCE_ALPHA
: 0;
1526 case GL_INTENSITY_SNORM
:
1527 case GL_INTENSITY8_SNORM
:
1528 case GL_INTENSITY16_SNORM
:
1529 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1534 return ((_mesa_is_desktop_gl(ctx
) &&
1535 ctx
->Extensions
.ARB_texture_rg
&&
1536 ctx
->Extensions
.ARB_texture_float
) ||
1537 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1541 return ((_mesa_is_desktop_gl(ctx
) &&
1542 ctx
->Extensions
.ARB_texture_rg
&&
1543 ctx
->Extensions
.ARB_texture_float
) ||
1544 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1548 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1552 return ((_mesa_is_desktop_gl(ctx
) &&
1553 ctx
->Extensions
.ARB_texture_float
) ||
1554 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1556 case GL_ALPHA16F_ARB
:
1557 case GL_ALPHA32F_ARB
:
1558 return ctx
->API
== API_OPENGL_COMPAT
&&
1559 ctx
->Extensions
.ARB_texture_float
&&
1560 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1561 case GL_LUMINANCE16F_ARB
:
1562 case GL_LUMINANCE32F_ARB
:
1563 return ctx
->API
== API_OPENGL_COMPAT
&&
1564 ctx
->Extensions
.ARB_texture_float
&&
1565 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1566 case GL_LUMINANCE_ALPHA16F_ARB
:
1567 case GL_LUMINANCE_ALPHA32F_ARB
:
1568 return ctx
->API
== API_OPENGL_COMPAT
&&
1569 ctx
->Extensions
.ARB_texture_float
&&
1570 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1571 case GL_INTENSITY16F_ARB
:
1572 case GL_INTENSITY32F_ARB
:
1573 return ctx
->API
== API_OPENGL_COMPAT
&&
1574 ctx
->Extensions
.ARB_texture_float
&&
1575 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1576 case GL_R11F_G11F_B10F
:
1577 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1578 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1581 case GL_RGBA8UI_EXT
:
1582 case GL_RGBA16UI_EXT
:
1583 case GL_RGBA32UI_EXT
:
1585 case GL_RGBA16I_EXT
:
1586 case GL_RGBA32I_EXT
:
1587 return ctx
->Version
>= 30
1588 || (_mesa_is_desktop_gl(ctx
) &&
1589 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1592 case GL_RGB16UI_EXT
:
1593 case GL_RGB32UI_EXT
:
1597 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1605 return ctx
->Version
>= 30
1606 || (_mesa_is_desktop_gl(ctx
) &&
1607 ctx
->Extensions
.ARB_texture_rg
&&
1608 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1616 return ctx
->Version
>= 30
1617 || (_mesa_is_desktop_gl(ctx
) &&
1618 ctx
->Extensions
.ARB_texture_rg
&&
1619 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1621 case GL_INTENSITY8I_EXT
:
1622 case GL_INTENSITY8UI_EXT
:
1623 case GL_INTENSITY16I_EXT
:
1624 case GL_INTENSITY16UI_EXT
:
1625 case GL_INTENSITY32I_EXT
:
1626 case GL_INTENSITY32UI_EXT
:
1627 return ctx
->API
== API_OPENGL_COMPAT
&&
1628 ctx
->Extensions
.EXT_texture_integer
&&
1629 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1631 case GL_LUMINANCE8I_EXT
:
1632 case GL_LUMINANCE8UI_EXT
:
1633 case GL_LUMINANCE16I_EXT
:
1634 case GL_LUMINANCE16UI_EXT
:
1635 case GL_LUMINANCE32I_EXT
:
1636 case GL_LUMINANCE32UI_EXT
:
1637 return ctx
->API
== API_OPENGL_COMPAT
&&
1638 ctx
->Extensions
.EXT_texture_integer
&&
1639 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1641 case GL_LUMINANCE_ALPHA8I_EXT
:
1642 case GL_LUMINANCE_ALPHA8UI_EXT
:
1643 case GL_LUMINANCE_ALPHA16I_EXT
:
1644 case GL_LUMINANCE_ALPHA16UI_EXT
:
1645 case GL_LUMINANCE_ALPHA32I_EXT
:
1646 case GL_LUMINANCE_ALPHA32UI_EXT
:
1647 return ctx
->API
== API_OPENGL_COMPAT
&&
1648 ctx
->Extensions
.EXT_texture_integer
&&
1649 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1651 case GL_ALPHA8I_EXT
:
1652 case GL_ALPHA8UI_EXT
:
1653 case GL_ALPHA16I_EXT
:
1654 case GL_ALPHA16UI_EXT
:
1655 case GL_ALPHA32I_EXT
:
1656 case GL_ALPHA32UI_EXT
:
1657 return ctx
->API
== API_OPENGL_COMPAT
&&
1658 ctx
->Extensions
.EXT_texture_integer
&&
1659 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1662 return (_mesa_is_desktop_gl(ctx
) &&
1663 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1664 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1667 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1676 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1679 invalidate_rb(GLuint key
, void *data
, void *userData
)
1681 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1682 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1684 /* If this is a user-created FBO */
1685 if (_mesa_is_user_fbo(fb
)) {
1687 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1688 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1689 if (att
->Type
== GL_RENDERBUFFER
&&
1690 att
->Renderbuffer
== rb
) {
1691 /* Mark fb status as indeterminate to force re-validation */
1700 /** sentinal value, see below */
1701 #define NO_SAMPLES 1000
1705 * Helper function used by _mesa_RenderbufferStorage() and
1706 * _mesa_RenderbufferStorageMultisample().
1707 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1710 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1711 GLsizei width
, GLsizei height
, GLsizei samples
)
1713 const char *func
= samples
== NO_SAMPLES
?
1714 "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
1715 struct gl_renderbuffer
*rb
;
1717 GLenum sample_count_error
;
1718 GET_CURRENT_CONTEXT(ctx
);
1720 if (MESA_VERBOSE
& VERBOSE_API
) {
1721 if (samples
== NO_SAMPLES
)
1722 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1724 _mesa_lookup_enum_by_nr(target
),
1725 _mesa_lookup_enum_by_nr(internalFormat
),
1728 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1730 _mesa_lookup_enum_by_nr(target
),
1731 _mesa_lookup_enum_by_nr(internalFormat
),
1732 width
, height
, samples
);
1735 if (target
!= GL_RENDERBUFFER_EXT
) {
1736 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1740 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1741 if (baseFormat
== 0) {
1742 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1743 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1747 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1748 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1752 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1753 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1757 if (samples
== NO_SAMPLES
) {
1758 /* NumSamples == 0 indicates non-multisampling */
1762 /* check the sample count;
1763 * note: driver may choose to use more samples than what's requested
1765 sample_count_error
= _mesa_check_sample_count(ctx
, target
,
1766 internalFormat
, samples
);
1767 if (sample_count_error
!= GL_NO_ERROR
) {
1768 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1773 rb
= ctx
->CurrentRenderbuffer
;
1775 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1779 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1781 if (rb
->InternalFormat
== internalFormat
&&
1782 rb
->Width
== (GLuint
) width
&&
1783 rb
->Height
== (GLuint
) height
&&
1784 rb
->NumSamples
== samples
) {
1785 /* no change in allocation needed */
1789 /* These MUST get set by the AllocStorage func */
1790 rb
->Format
= MESA_FORMAT_NONE
;
1791 rb
->NumSamples
= samples
;
1793 /* Now allocate the storage */
1794 ASSERT(rb
->AllocStorage
);
1795 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1796 /* No error - check/set fields now */
1797 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1798 assert(rb
->Width
== (GLuint
) width
);
1799 assert(rb
->Height
== (GLuint
) height
);
1800 rb
->InternalFormat
= internalFormat
;
1801 rb
->_BaseFormat
= baseFormat
;
1802 assert(rb
->_BaseFormat
!= 0);
1805 /* Probably ran out of memory - clear the fields */
1808 rb
->Format
= MESA_FORMAT_NONE
;
1809 rb
->InternalFormat
= GL_NONE
;
1810 rb
->_BaseFormat
= GL_NONE
;
1814 /* Invalidate the framebuffers the renderbuffer is attached in. */
1815 if (rb
->AttachedAnytime
) {
1816 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1822 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1824 struct gl_renderbuffer
*rb
;
1825 GET_CURRENT_CONTEXT(ctx
);
1827 if (!ctx
->Extensions
.OES_EGL_image
) {
1828 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1829 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1833 if (target
!= GL_RENDERBUFFER
) {
1834 _mesa_error(ctx
, GL_INVALID_ENUM
,
1835 "EGLImageTargetRenderbufferStorageOES");
1839 rb
= ctx
->CurrentRenderbuffer
;
1841 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1842 "EGLImageTargetRenderbufferStorageOES");
1846 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1848 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1853 * Helper function for _mesa_GetRenderbufferParameteriv() and
1854 * _mesa_GetFramebufferAttachmentParameteriv()
1855 * We have to be careful to respect the base format. For example, if a
1856 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1857 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1858 * we need to return zero.
1861 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
1863 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1864 return _mesa_get_format_bits(format
, pname
);
1872 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
1873 GLsizei width
, GLsizei height
)
1875 /* GL_ARB_fbo says calling this function is equivalent to calling
1876 * glRenderbufferStorageMultisample() with samples=0. We pass in
1877 * a token value here just for error reporting purposes.
1879 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1884 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1885 GLenum internalFormat
,
1886 GLsizei width
, GLsizei height
)
1888 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1893 * OpenGL ES version of glRenderBufferStorage.
1896 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1897 GLsizei width
, GLsizei height
)
1899 switch (internalFormat
) {
1901 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1902 /* choose a closest format */
1903 internalFormat
= GL_RGB5
;
1909 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1914 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
1916 struct gl_renderbuffer
*rb
;
1917 GET_CURRENT_CONTEXT(ctx
);
1919 if (target
!= GL_RENDERBUFFER_EXT
) {
1920 _mesa_error(ctx
, GL_INVALID_ENUM
,
1921 "glGetRenderbufferParameterivEXT(target)");
1925 rb
= ctx
->CurrentRenderbuffer
;
1927 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1928 "glGetRenderbufferParameterivEXT");
1932 /* No need to flush here since we're just quering state which is
1933 * not effected by rendering.
1937 case GL_RENDERBUFFER_WIDTH_EXT
:
1938 *params
= rb
->Width
;
1940 case GL_RENDERBUFFER_HEIGHT_EXT
:
1941 *params
= rb
->Height
;
1943 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1944 *params
= rb
->InternalFormat
;
1946 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1947 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1948 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1949 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1950 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1951 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1952 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1954 case GL_RENDERBUFFER_SAMPLES
:
1955 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1956 || _mesa_is_gles3(ctx
)) {
1957 *params
= rb
->NumSamples
;
1962 _mesa_error(ctx
, GL_INVALID_ENUM
,
1963 "glGetRenderbufferParameterivEXT(target)");
1969 GLboolean GLAPIENTRY
1970 _mesa_IsFramebuffer(GLuint framebuffer
)
1972 GET_CURRENT_CONTEXT(ctx
);
1973 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1975 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1976 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1984 * Check if any of the attachments of the given framebuffer are textures
1985 * (render to texture). Call ctx->Driver.RenderTexture() for such
1989 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1992 ASSERT(ctx
->Driver
.RenderTexture
);
1994 if (_mesa_is_winsys_fbo(fb
))
1995 return; /* can't render to texture with winsys framebuffers */
1997 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1998 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1999 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2000 && driver_RenderTexture_is_safe(att
)) {
2001 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2008 * Examine all the framebuffer's attachments to see if any are textures.
2009 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2010 * notify the device driver that the texture image may have changed.
2013 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2015 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2016 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2019 if (ctx
->Driver
.FinishRenderTexture
) {
2021 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2022 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2023 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2024 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2025 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2033 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2035 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2036 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2037 GLboolean bindReadBuf
, bindDrawBuf
;
2038 GET_CURRENT_CONTEXT(ctx
);
2041 case GL_DRAW_FRAMEBUFFER_EXT
:
2042 bindDrawBuf
= GL_TRUE
;
2043 bindReadBuf
= GL_FALSE
;
2045 case GL_READ_FRAMEBUFFER_EXT
:
2046 bindDrawBuf
= GL_FALSE
;
2047 bindReadBuf
= GL_TRUE
;
2049 case GL_FRAMEBUFFER_EXT
:
2050 bindDrawBuf
= GL_TRUE
;
2051 bindReadBuf
= GL_TRUE
;
2054 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2059 /* Binding a user-created framebuffer object */
2060 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2061 if (newDrawFb
== &DummyFramebuffer
) {
2062 /* ID was reserved, but no real framebuffer object made yet */
2065 else if (!newDrawFb
&& !allow_user_names
) {
2066 /* All FBO IDs must be Gen'd */
2067 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2072 /* create new framebuffer object */
2073 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2075 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2078 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2080 newReadFb
= newDrawFb
;
2083 /* Binding the window system framebuffer (which was originally set
2084 * with MakeCurrent).
2086 newDrawFb
= ctx
->WinSysDrawBuffer
;
2087 newReadFb
= ctx
->WinSysReadBuffer
;
2091 ASSERT(newDrawFb
!= &DummyFramebuffer
);
2093 /* save pointers to current/old framebuffers */
2094 oldDrawFb
= ctx
->DrawBuffer
;
2095 oldReadFb
= ctx
->ReadBuffer
;
2097 /* check if really changing bindings */
2098 if (oldDrawFb
== newDrawFb
)
2099 bindDrawBuf
= GL_FALSE
;
2100 if (oldReadFb
== newReadFb
)
2101 bindReadBuf
= GL_FALSE
;
2104 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2106 * We also check if we're beginning and/or ending render-to-texture.
2107 * When a framebuffer with texture attachments is unbound, call
2108 * ctx->Driver.FinishRenderTexture().
2109 * When a framebuffer with texture attachments is bound, call
2110 * ctx->Driver.RenderTexture().
2112 * Note that if the ReadBuffer has texture attachments we don't consider
2113 * that a render-to-texture case.
2116 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2118 /* check if old readbuffer was render-to-texture */
2119 check_end_texture_render(ctx
, oldReadFb
);
2121 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2125 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2127 /* check if old framebuffer had any texture attachments */
2129 check_end_texture_render(ctx
, oldDrawFb
);
2131 /* check if newly bound framebuffer has any texture attachments */
2132 check_begin_texture_render(ctx
, newDrawFb
);
2134 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2137 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2138 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2143 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2145 GET_CURRENT_CONTEXT(ctx
);
2147 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2148 * point, but they allow the use of user-generated names.
2150 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2155 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2157 /* This function should not be in the dispatch table for core profile /
2158 * OpenGL 3.1, so execution should never get here in those cases -- no
2159 * need for an explicit test.
2161 bind_framebuffer(target
, framebuffer
, true);
2166 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2169 GET_CURRENT_CONTEXT(ctx
);
2171 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2173 for (i
= 0; i
< n
; i
++) {
2174 if (framebuffers
[i
] > 0) {
2175 struct gl_framebuffer
*fb
;
2176 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2178 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2180 /* check if deleting currently bound framebuffer object */
2181 if (fb
== ctx
->DrawBuffer
) {
2183 ASSERT(fb
->RefCount
>= 2);
2184 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2186 if (fb
== ctx
->ReadBuffer
) {
2188 ASSERT(fb
->RefCount
>= 2);
2189 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2192 /* remove from hash table immediately, to free the ID */
2193 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2195 if (fb
!= &DummyFramebuffer
) {
2196 /* But the object will not be freed until it's no longer
2197 * bound in any context.
2199 _mesa_reference_framebuffer(&fb
, NULL
);
2208 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2210 GET_CURRENT_CONTEXT(ctx
);
2215 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2222 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2224 for (i
= 0; i
< n
; i
++) {
2225 GLuint name
= first
+ i
;
2226 framebuffers
[i
] = name
;
2227 /* insert dummy placeholder into hash table */
2228 mtx_lock(&ctx
->Shared
->Mutex
);
2229 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2230 mtx_unlock(&ctx
->Shared
->Mutex
);
2236 _mesa_CheckFramebufferStatus(GLenum target
)
2238 struct gl_framebuffer
*buffer
;
2239 GET_CURRENT_CONTEXT(ctx
);
2241 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2243 if (MESA_VERBOSE
& VERBOSE_API
)
2244 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2245 _mesa_lookup_enum_by_nr(target
));
2247 buffer
= get_framebuffer_target(ctx
, target
);
2249 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2253 if (_mesa_is_winsys_fbo(buffer
)) {
2254 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2255 if (buffer
!= &IncompleteFramebuffer
) {
2256 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2258 return GL_FRAMEBUFFER_UNDEFINED
;
2262 /* No need to flush here */
2264 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2265 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2268 return buffer
->_Status
;
2273 * Replicate the src attachment point. Used by framebuffer_texture() when
2274 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2275 * GL_STENCIL_ATTACHMENT.
2278 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2279 gl_buffer_index dst
,
2280 gl_buffer_index src
)
2282 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2283 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2285 assert(src_att
->Texture
!= NULL
);
2286 assert(src_att
->Renderbuffer
!= NULL
);
2288 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2289 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2290 dst_att
->Type
= src_att
->Type
;
2291 dst_att
->Complete
= src_att
->Complete
;
2292 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2293 dst_att
->Zoffset
= src_att
->Zoffset
;
2298 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
2299 * glFramebufferTextureLayerEXT().
2301 * \param textarget is the textarget that was passed to the
2302 * glFramebufferTexture...() function, or 0 if the corresponding function
2303 * doesn't have a textarget parameter.
2305 * \param layered is true if this function was called from
2306 * glFramebufferTexture(), false otherwise.
2309 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2310 GLenum attachment
, GLenum textarget
, GLuint texture
,
2311 GLint level
, GLint zoffset
, GLboolean layered
)
2313 struct gl_renderbuffer_attachment
*att
;
2314 struct gl_texture_object
*texObj
= NULL
;
2315 struct gl_framebuffer
*fb
;
2316 GLenum maxLevelsTarget
;
2318 fb
= get_framebuffer_target(ctx
, target
);
2320 _mesa_error(ctx
, GL_INVALID_ENUM
,
2321 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2325 /* check framebuffer binding */
2326 if (_mesa_is_winsys_fbo(fb
)) {
2327 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2328 "glFramebufferTexture%sEXT", caller
);
2332 /* The textarget, level, and zoffset parameters are only validated if
2333 * texture is non-zero.
2336 GLboolean err
= GL_TRUE
;
2338 texObj
= _mesa_lookup_texture(ctx
, texture
);
2339 if (texObj
!= NULL
) {
2340 if (textarget
== 0) {
2342 /* We're being called by glFramebufferTexture() and textarget
2345 switch (texObj
->Target
) {
2347 case GL_TEXTURE_1D_ARRAY_EXT
:
2348 case GL_TEXTURE_2D_ARRAY_EXT
:
2349 case GL_TEXTURE_CUBE_MAP
:
2350 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2351 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2356 case GL_TEXTURE_RECTANGLE
:
2357 case GL_TEXTURE_2D_MULTISAMPLE
:
2358 /* These texture types are valid to pass to
2359 * glFramebufferTexture(), but since they aren't layered, it
2360 * is equivalent to calling glFramebufferTexture{1D,2D}().
2364 textarget
= texObj
->Target
;
2371 /* We're being called by glFramebufferTextureLayer() and
2372 * textarget is not used. The only legal texture types for
2373 * that function are 3D and 1D/2D arrays textures.
2375 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2376 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2377 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2378 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2379 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2383 /* Make sure textarget is consistent with the texture's type */
2384 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2385 ? !_mesa_is_cube_face(textarget
)
2386 : (texObj
->Target
!= textarget
);
2390 /* can't render to a non-existant texture */
2391 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2392 "glFramebufferTexture%sEXT(non existant texture)",
2398 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2399 "glFramebufferTexture%sEXT(texture target mismatch)",
2404 if (texObj
->Target
== GL_TEXTURE_3D
) {
2405 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2406 if (zoffset
< 0 || zoffset
>= maxSize
) {
2407 _mesa_error(ctx
, GL_INVALID_VALUE
,
2408 "glFramebufferTexture%sEXT(zoffset)", caller
);
2412 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2413 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2414 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2415 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2417 zoffset
>= (GLint
) ctx
->Const
.MaxArrayTextureLayers
) {
2418 _mesa_error(ctx
, GL_INVALID_VALUE
,
2419 "glFramebufferTexture%sEXT(layer)", caller
);
2424 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2426 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2427 _mesa_error(ctx
, GL_INVALID_VALUE
,
2428 "glFramebufferTexture%sEXT(level)", caller
);
2433 att
= get_attachment(ctx
, fb
, attachment
);
2435 _mesa_error(ctx
, GL_INVALID_ENUM
,
2436 "glFramebufferTexture%sEXT(attachment)", caller
);
2440 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2442 mtx_lock(&fb
->Mutex
);
2444 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2445 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2446 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2447 _mesa_tex_target_to_face(textarget
) ==
2448 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2449 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2450 /* The texture object is already attached to the stencil attachment
2451 * point. Don't create a new renderbuffer; just reuse the stencil
2452 * attachment's. This is required to prevent a GL error in
2453 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2455 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2457 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2458 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2459 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2460 _mesa_tex_target_to_face(textarget
) ==
2461 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2462 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2463 /* As above, but with depth and stencil transposed. */
2464 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2467 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2468 level
, zoffset
, layered
);
2469 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2470 /* Above we created a new renderbuffer and attached it to the
2471 * depth attachment point. Now attach it to the stencil attachment
2474 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2475 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2480 /* Set the render-to-texture flag. We'll check this flag in
2481 * glTexImage() and friends to determine if we need to revalidate
2482 * any FBOs that might be rendering into this texture.
2483 * This flag never gets cleared since it's non-trivial to determine
2484 * when all FBOs might be done rendering to this texture. That's OK
2485 * though since it's uncommon to render to a texture then repeatedly
2486 * call glTexImage() to change images in the texture.
2488 texObj
->_RenderToTexture
= GL_TRUE
;
2491 remove_attachment(ctx
, att
);
2492 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2493 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2494 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2498 invalidate_framebuffer(fb
);
2500 mtx_unlock(&fb
->Mutex
);
2505 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2506 GLenum textarget
, GLuint texture
, GLint level
)
2508 GET_CURRENT_CONTEXT(ctx
);
2513 switch (textarget
) {
2517 case GL_TEXTURE_1D_ARRAY
:
2518 error
= !ctx
->Extensions
.EXT_texture_array
;
2525 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2526 "glFramebufferTexture1DEXT(textarget=%s)",
2527 _mesa_lookup_enum_by_nr(textarget
));
2532 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2533 level
, 0, GL_FALSE
);
2538 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2539 GLenum textarget
, GLuint texture
, GLint level
)
2541 GET_CURRENT_CONTEXT(ctx
);
2546 switch (textarget
) {
2550 case GL_TEXTURE_RECTANGLE
:
2551 error
= _mesa_is_gles(ctx
)
2552 || !ctx
->Extensions
.NV_texture_rectangle
;
2554 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2555 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2556 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2557 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2558 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2559 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2560 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2562 case GL_TEXTURE_2D_ARRAY
:
2563 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2564 || !ctx
->Extensions
.EXT_texture_array
;
2566 case GL_TEXTURE_2D_MULTISAMPLE
:
2567 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2568 error
= _mesa_is_gles(ctx
)
2569 || !ctx
->Extensions
.ARB_texture_multisample
;
2576 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2577 "glFramebufferTexture2DEXT(textarget=%s)",
2578 _mesa_lookup_enum_by_nr(textarget
));
2583 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2584 level
, 0, GL_FALSE
);
2589 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2590 GLenum textarget
, GLuint texture
,
2591 GLint level
, GLint zoffset
)
2593 GET_CURRENT_CONTEXT(ctx
);
2595 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2596 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2597 "glFramebufferTexture3DEXT(textarget)");
2601 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2602 level
, zoffset
, GL_FALSE
);
2607 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2608 GLuint texture
, GLint level
, GLint layer
)
2610 GET_CURRENT_CONTEXT(ctx
);
2612 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2613 level
, layer
, GL_FALSE
);
2618 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2619 GLuint texture
, GLint level
)
2621 GET_CURRENT_CONTEXT(ctx
);
2623 if (_mesa_has_geometry_shaders(ctx
)) {
2624 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2627 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2628 "unsupported function (glFramebufferTexture) called");
2634 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2635 GLenum renderbufferTarget
,
2636 GLuint renderbuffer
)
2638 struct gl_renderbuffer_attachment
*att
;
2639 struct gl_framebuffer
*fb
;
2640 struct gl_renderbuffer
*rb
;
2641 GET_CURRENT_CONTEXT(ctx
);
2643 fb
= get_framebuffer_target(ctx
, target
);
2645 _mesa_error(ctx
, GL_INVALID_ENUM
,
2646 "glFramebufferRenderbufferEXT(target)");
2650 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2651 _mesa_error(ctx
, GL_INVALID_ENUM
,
2652 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2656 if (_mesa_is_winsys_fbo(fb
)) {
2657 /* Can't attach new renderbuffers to a window system framebuffer */
2658 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2662 att
= get_attachment(ctx
, fb
, attachment
);
2664 _mesa_error(ctx
, GL_INVALID_ENUM
,
2665 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2666 _mesa_lookup_enum_by_nr(attachment
));
2671 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2673 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2674 "glFramebufferRenderbufferEXT(non-existant"
2675 " renderbuffer %u)", renderbuffer
);
2678 else if (rb
== &DummyRenderbuffer
) {
2679 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2680 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2686 /* remove renderbuffer attachment */
2690 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2691 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2692 /* make sure the renderbuffer is a depth/stencil format */
2693 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2694 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2695 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2696 "glFramebufferRenderbufferEXT(renderbuffer"
2697 " is not DEPTH_STENCIL format)");
2702 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2704 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2705 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2707 /* Some subsequent GL commands may depend on the framebuffer's visual
2708 * after the binding is updated. Update visual info now.
2710 _mesa_update_framebuffer_visual(ctx
, fb
);
2715 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2716 GLenum pname
, GLint
*params
)
2718 const struct gl_renderbuffer_attachment
*att
;
2719 struct gl_framebuffer
*buffer
;
2721 GET_CURRENT_CONTEXT(ctx
);
2723 /* The error differs in GL and GLES. */
2724 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2726 buffer
= get_framebuffer_target(ctx
, target
);
2728 _mesa_error(ctx
, GL_INVALID_ENUM
,
2729 "glGetFramebufferAttachmentParameterivEXT(target)");
2733 if (_mesa_is_winsys_fbo(buffer
)) {
2734 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2737 * "If the framebuffer currently bound to target is zero, then
2738 * INVALID_OPERATION is generated."
2740 * The EXT_framebuffer_object spec has the same wording, and the
2741 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2744 if ((!_mesa_is_desktop_gl(ctx
) ||
2745 !ctx
->Extensions
.ARB_framebuffer_object
)
2746 && !_mesa_is_gles3(ctx
)) {
2747 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2748 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2752 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2753 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2754 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2755 "glGetFramebufferAttachmentParameteriv(attachment)");
2758 /* the default / window-system FBO */
2759 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2762 /* user-created framebuffer FBO */
2763 att
= get_attachment(ctx
, buffer
, attachment
);
2767 _mesa_error(ctx
, GL_INVALID_ENUM
,
2768 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2772 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2773 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2774 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
2775 /* This behavior is first specified in OpenGL 4.4 specification.
2777 * From the OpenGL 4.4 spec page 275:
2778 * "This query cannot be performed for a combined depth+stencil
2779 * attachment, since it does not have a single format."
2781 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2782 "glGetFramebufferAttachmentParameteriv("
2783 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
2784 " is invalid for depth+stencil attachment)");
2787 /* the depth and stencil attachments must point to the same buffer */
2788 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2789 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2790 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2791 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2792 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2793 " attachments differ)");
2798 /* No need to flush here */
2801 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2802 *params
= _mesa_is_winsys_fbo(buffer
)
2803 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2805 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2806 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2807 *params
= att
->Renderbuffer
->Name
;
2809 else if (att
->Type
== GL_TEXTURE
) {
2810 *params
= att
->Texture
->Name
;
2813 assert(att
->Type
== GL_NONE
);
2814 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2817 goto invalid_pname_enum
;
2821 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2822 if (att
->Type
== GL_TEXTURE
) {
2823 *params
= att
->TextureLevel
;
2825 else if (att
->Type
== GL_NONE
) {
2826 _mesa_error(ctx
, err
,
2827 "glGetFramebufferAttachmentParameterivEXT(pname)");
2830 goto invalid_pname_enum
;
2833 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2834 if (att
->Type
== GL_TEXTURE
) {
2835 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2836 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2842 else if (att
->Type
== GL_NONE
) {
2843 _mesa_error(ctx
, err
,
2844 "glGetFramebufferAttachmentParameterivEXT(pname)");
2847 goto invalid_pname_enum
;
2850 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2851 if (ctx
->API
== API_OPENGLES
) {
2852 goto invalid_pname_enum
;
2853 } else if (att
->Type
== GL_NONE
) {
2854 _mesa_error(ctx
, err
,
2855 "glGetFramebufferAttachmentParameterivEXT(pname)");
2856 } else if (att
->Type
== GL_TEXTURE
) {
2857 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2858 *params
= att
->Zoffset
;
2865 goto invalid_pname_enum
;
2868 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2869 if ((!_mesa_is_desktop_gl(ctx
) ||
2870 !ctx
->Extensions
.ARB_framebuffer_object
)
2871 && !_mesa_is_gles3(ctx
)) {
2872 goto invalid_pname_enum
;
2874 else if (att
->Type
== GL_NONE
) {
2875 _mesa_error(ctx
, err
,
2876 "glGetFramebufferAttachmentParameterivEXT(pname)");
2879 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2881 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2884 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2885 * if the sRGB conversion is unsupported. */
2886 *params
= GL_LINEAR
;
2890 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2891 if ((ctx
->API
!= API_OPENGL_COMPAT
||
2892 !ctx
->Extensions
.ARB_framebuffer_object
)
2893 && ctx
->API
!= API_OPENGL_CORE
2894 && !_mesa_is_gles3(ctx
)) {
2895 goto invalid_pname_enum
;
2897 else if (att
->Type
== GL_NONE
) {
2898 _mesa_error(ctx
, err
,
2899 "glGetFramebufferAttachmentParameterivEXT(pname)");
2902 mesa_format format
= att
->Renderbuffer
->Format
;
2904 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
2907 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
2908 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
2909 * generate an INVALID_OPERATION error.
2911 if (_mesa_is_gles3(ctx
) &&
2912 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2913 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2914 "glGetFramebufferAttachmentParameteriv(cannot query "
2915 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
2916 "GL_DEPTH_STENCIL_ATTACHMENT");
2920 if (format
== MESA_FORMAT_S_UINT8
) {
2924 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
2925 /* depends on the attachment parameter */
2926 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2934 *params
= _mesa_get_format_datatype(format
);
2938 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2939 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2940 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2941 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2942 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2943 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2944 if ((!_mesa_is_desktop_gl(ctx
) ||
2945 !ctx
->Extensions
.ARB_framebuffer_object
)
2946 && !_mesa_is_gles3(ctx
)) {
2947 goto invalid_pname_enum
;
2949 else if (att
->Type
== GL_NONE
) {
2950 _mesa_error(ctx
, err
,
2951 "glGetFramebufferAttachmentParameterivEXT(pname)");
2953 else if (att
->Texture
) {
2954 const struct gl_texture_image
*texImage
=
2955 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2958 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2959 texImage
->TexFormat
);
2965 else if (att
->Renderbuffer
) {
2966 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2967 att
->Renderbuffer
->Format
);
2970 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2971 " invalid FBO attachment structure");
2974 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
2975 if (!_mesa_has_geometry_shaders(ctx
)) {
2976 goto invalid_pname_enum
;
2977 } else if (att
->Type
== GL_TEXTURE
) {
2978 *params
= att
->Layered
;
2979 } else if (att
->Type
== GL_NONE
) {
2980 _mesa_error(ctx
, err
,
2981 "glGetFramebufferAttachmentParameteriv(pname)");
2983 goto invalid_pname_enum
;
2987 goto invalid_pname_enum
;
2993 _mesa_error(ctx
, GL_INVALID_ENUM
,
2994 "glGetFramebufferAttachmentParameteriv(pname)");
3000 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3001 const GLenum
*attachments
, GLint x
, GLint y
,
3002 GLsizei width
, GLsizei height
, const char *name
)
3005 struct gl_framebuffer
*fb
;
3006 GET_CURRENT_CONTEXT(ctx
);
3008 fb
= get_framebuffer_target(ctx
, target
);
3010 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3014 if (numAttachments
< 0) {
3015 _mesa_error(ctx
, GL_INVALID_VALUE
,
3016 "%s(numAttachments < 0)", name
);
3020 /* The GL_ARB_invalidate_subdata spec says:
3022 * "If an attachment is specified that does not exist in the
3023 * framebuffer bound to <target>, it is ignored."
3027 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3028 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3029 * INVALID_OPERATION is generated."
3031 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3032 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3033 * set of retrictions).
3035 for (i
= 0; i
< numAttachments
; i
++) {
3036 if (_mesa_is_winsys_fbo(fb
)) {
3037 switch (attachments
[i
]) {
3043 /* Accumulation buffers and auxilary buffers were removed in
3044 * OpenGL 3.1, and they never existed in OpenGL ES.
3046 if (ctx
->API
!= API_OPENGL_COMPAT
)
3056 case GL_FRONT_RIGHT
:
3057 if (!_mesa_is_desktop_gl(ctx
))
3064 switch (attachments
[i
]) {
3065 case GL_DEPTH_ATTACHMENT
:
3066 case GL_STENCIL_ATTACHMENT
:
3068 case GL_COLOR_ATTACHMENT0
:
3069 case GL_COLOR_ATTACHMENT1
:
3070 case GL_COLOR_ATTACHMENT2
:
3071 case GL_COLOR_ATTACHMENT3
:
3072 case GL_COLOR_ATTACHMENT4
:
3073 case GL_COLOR_ATTACHMENT5
:
3074 case GL_COLOR_ATTACHMENT6
:
3075 case GL_COLOR_ATTACHMENT7
:
3076 case GL_COLOR_ATTACHMENT8
:
3077 case GL_COLOR_ATTACHMENT9
:
3078 case GL_COLOR_ATTACHMENT10
:
3079 case GL_COLOR_ATTACHMENT11
:
3080 case GL_COLOR_ATTACHMENT12
:
3081 case GL_COLOR_ATTACHMENT13
:
3082 case GL_COLOR_ATTACHMENT14
:
3083 case GL_COLOR_ATTACHMENT15
: {
3084 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3085 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3086 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3087 "%s(attachment >= max. color attachments)", name
);
3098 /* We don't actually do anything for this yet. Just return after
3099 * validating the parameters and generating the required errors.
3104 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3110 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3111 const GLenum
*attachments
, GLint x
, GLint y
,
3112 GLsizei width
, GLsizei height
)
3114 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3115 x
, y
, width
, height
,
3116 "glInvalidateSubFramebuffer");
3121 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3122 const GLenum
*attachments
)
3124 /* The GL_ARB_invalidate_subdata spec says:
3128 * void InvalidateFramebuffer(enum target,
3129 * sizei numAttachments,
3130 * const enum *attachments);
3132 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3133 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3134 * <MAX_VIEWPORT_DIMS[1]> respectively."
3136 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3138 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3139 "glInvalidateFramebuffer");
3144 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3145 const GLenum
*attachments
)
3147 struct gl_framebuffer
*fb
;
3150 GET_CURRENT_CONTEXT(ctx
);
3152 fb
= get_framebuffer_target(ctx
, target
);
3154 _mesa_error(ctx
, GL_INVALID_ENUM
,
3155 "glDiscardFramebufferEXT(target %s)",
3156 _mesa_lookup_enum_by_nr(target
));
3160 if (numAttachments
< 0) {
3161 _mesa_error(ctx
, GL_INVALID_VALUE
,
3162 "glDiscardFramebufferEXT(numAttachments < 0)");
3166 for (i
= 0; i
< numAttachments
; i
++) {
3167 switch (attachments
[i
]) {
3171 if (_mesa_is_user_fbo(fb
))
3174 case GL_COLOR_ATTACHMENT0
:
3175 case GL_DEPTH_ATTACHMENT
:
3176 case GL_STENCIL_ATTACHMENT
:
3177 if (_mesa_is_winsys_fbo(fb
))
3185 if (ctx
->Driver
.DiscardFramebuffer
)
3186 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3191 _mesa_error(ctx
, GL_INVALID_ENUM
,
3192 "glDiscardFramebufferEXT(attachment %s)",
3193 _mesa_lookup_enum_by_nr(attachments
[i
]));