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
) {
816 } else if (ctx
->Extensions
.ARB_texture_stencil8
&&
817 baseFormat
== GL_STENCIL_INDEX
) {
820 /* no such thing as stencil-only textures */
821 att_incomplete("illegal stencil texture");
822 att
->Complete
= GL_FALSE
;
827 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
828 const GLenum baseFormat
=
829 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
831 assert(att
->Renderbuffer
);
832 if (!att
->Renderbuffer
->InternalFormat
||
833 att
->Renderbuffer
->Width
< 1 ||
834 att
->Renderbuffer
->Height
< 1) {
835 att_incomplete("0x0 renderbuffer");
836 att
->Complete
= GL_FALSE
;
839 if (format
== GL_COLOR
) {
840 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
841 att_incomplete("bad renderbuffer color format");
842 att
->Complete
= GL_FALSE
;
846 else if (format
== GL_DEPTH
) {
847 if (baseFormat
== GL_DEPTH_COMPONENT
) {
850 else if (baseFormat
== GL_DEPTH_STENCIL
) {
854 att_incomplete("bad renderbuffer depth format");
855 att
->Complete
= GL_FALSE
;
860 assert(format
== GL_STENCIL
);
861 if (baseFormat
== GL_STENCIL_INDEX
||
862 baseFormat
== GL_DEPTH_STENCIL
) {
866 att
->Complete
= GL_FALSE
;
867 att_incomplete("bad renderbuffer stencil format");
873 assert(att
->Type
== GL_NONE
);
881 * Test if the given framebuffer object is complete and update its
882 * Status field with the results.
883 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
884 * driver to make hardware-specific validation/completeness checks.
885 * Also update the framebuffer's Width and Height fields if the
886 * framebuffer is complete.
889 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
890 struct gl_framebuffer
*fb
)
893 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
894 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
895 GLint numSamples
= -1;
896 GLint fixedSampleLocations
= -1;
899 /* Covers max_layer_count, is_layered, and layer_tex_target */
900 bool layer_info_valid
= false;
901 GLuint max_layer_count
= 0, att_layer_count
;
902 bool is_layered
= false;
903 GLenum layer_tex_target
= 0;
904 bool has_depth_attachment
= false;
905 bool has_stencil_attachment
= false;
907 assert(_mesa_is_user_fbo(fb
));
909 /* we're changing framebuffer fields here */
910 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
915 fb
->_AllColorBuffersFixedPoint
= GL_TRUE
;
916 fb
->_HasSNormOrFloatColorBuffer
= GL_FALSE
;
918 /* Start at -2 to more easily loop over all attachment points.
923 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
924 struct gl_renderbuffer_attachment
*att
;
926 mesa_format attFormat
;
927 GLenum att_tex_target
= GL_NONE
;
930 * XXX for ARB_fbo, only check color buffers that are named by
931 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
934 /* check for attachment completeness
937 att
= &fb
->Attachment
[BUFFER_DEPTH
];
938 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
939 if (!att
->Complete
) {
940 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
941 fbo_incomplete(ctx
, "depth attachment incomplete", -1);
943 } else if (att
->Type
!= GL_NONE
) {
944 has_depth_attachment
= true;
948 att
= &fb
->Attachment
[BUFFER_STENCIL
];
949 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
950 if (!att
->Complete
) {
951 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
952 fbo_incomplete(ctx
, "stencil attachment incomplete", -1);
954 } else if (att
->Type
!= GL_NONE
) {
955 has_stencil_attachment
= true;
959 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
960 test_attachment_completeness(ctx
, GL_COLOR
, att
);
961 if (!att
->Complete
) {
962 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
963 fbo_incomplete(ctx
, "color attachment incomplete", i
);
968 /* get width, height, format of the renderbuffer/texture
970 if (att
->Type
== GL_TEXTURE
) {
971 const struct gl_texture_image
*texImg
= att
->Renderbuffer
->TexImage
;
972 att_tex_target
= att
->Texture
->Target
;
973 minWidth
= MIN2(minWidth
, texImg
->Width
);
974 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
975 minHeight
= MIN2(minHeight
, texImg
->Height
);
976 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
977 f
= texImg
->_BaseFormat
;
978 attFormat
= texImg
->TexFormat
;
981 if (!is_format_color_renderable(ctx
, attFormat
,
982 texImg
->InternalFormat
) &&
983 !is_legal_depth_format(ctx
, f
) &&
984 f
!= GL_STENCIL_INDEX
) {
985 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT
;
986 fbo_incomplete(ctx
, "texture attachment incomplete", -1);
991 numSamples
= texImg
->NumSamples
;
992 else if (numSamples
!= texImg
->NumSamples
) {
993 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
994 fbo_incomplete(ctx
, "inconsistent sample count", -1);
998 if (fixedSampleLocations
< 0)
999 fixedSampleLocations
= texImg
->FixedSampleLocations
;
1000 else if (fixedSampleLocations
!= texImg
->FixedSampleLocations
) {
1001 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1002 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1006 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1007 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
1008 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
1009 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
1010 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
1011 f
= att
->Renderbuffer
->InternalFormat
;
1012 attFormat
= att
->Renderbuffer
->Format
;
1016 numSamples
= att
->Renderbuffer
->NumSamples
;
1017 else if (numSamples
!= att
->Renderbuffer
->NumSamples
) {
1018 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1019 fbo_incomplete(ctx
, "inconsistent sample count", -1);
1023 /* RENDERBUFFER has fixedSampleLocations implicitly true */
1024 if (fixedSampleLocations
< 0)
1025 fixedSampleLocations
= GL_TRUE
;
1026 else if (fixedSampleLocations
!= GL_TRUE
) {
1027 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
1028 fbo_incomplete(ctx
, "inconsistent fixed sample locations", -1);
1033 assert(att
->Type
== GL_NONE
);
1037 /* check if integer color */
1038 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
1040 /* Update _AllColorBuffersFixedPoint and _HasSNormOrFloatColorBuffer. */
1042 GLenum type
= _mesa_get_format_datatype(attFormat
);
1044 fb
->_AllColorBuffersFixedPoint
=
1045 fb
->_AllColorBuffersFixedPoint
&&
1046 (type
== GL_UNSIGNED_NORMALIZED
|| type
== GL_SIGNED_NORMALIZED
);
1048 fb
->_HasSNormOrFloatColorBuffer
=
1049 fb
->_HasSNormOrFloatColorBuffer
||
1050 type
== GL_SIGNED_NORMALIZED
|| type
== GL_FLOAT
;
1053 /* Error-check width, height, format */
1054 if (numImages
== 1) {
1061 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1062 /* check that width, height, format are same */
1063 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
1064 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
1065 fbo_incomplete(ctx
, "width or height mismatch", -1);
1068 /* check that all color buffers are the same format */
1069 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
1070 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
1071 fbo_incomplete(ctx
, "format mismatch", -1);
1077 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
1079 if (att
->Type
== GL_RENDERBUFFER
&&
1080 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
1081 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1082 fbo_incomplete(ctx
, "unsupported renderbuffer format", i
);
1086 /* Check that layered rendering is consistent. */
1088 if (att_tex_target
== GL_TEXTURE_CUBE_MAP
)
1089 att_layer_count
= 6;
1090 else if (att_tex_target
== GL_TEXTURE_1D_ARRAY
)
1091 att_layer_count
= att
->Renderbuffer
->Height
;
1093 att_layer_count
= att
->Renderbuffer
->Depth
;
1095 att_layer_count
= 0;
1097 if (!layer_info_valid
) {
1098 is_layered
= att
->Layered
;
1099 max_layer_count
= att_layer_count
;
1100 layer_tex_target
= att_tex_target
;
1101 layer_info_valid
= true;
1102 } else if (max_layer_count
> 0 && layer_tex_target
!= att_tex_target
) {
1103 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1104 fbo_incomplete(ctx
, "layered framebuffer has mismatched targets", i
);
1106 } else if (is_layered
!= att
->Layered
) {
1107 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS
;
1109 "framebuffer attachment layer mode is inconsistent",
1112 } else if (att_layer_count
> max_layer_count
) {
1113 max_layer_count
= att_layer_count
;
1117 fb
->MaxNumLayers
= max_layer_count
;
1119 if (numImages
== 0) {
1120 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
1121 fbo_incomplete(ctx
, "no attachments", -1);
1125 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
1126 /* Check that all DrawBuffers are present */
1127 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
1128 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
1129 const struct gl_renderbuffer_attachment
*att
1130 = get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
1132 if (att
->Type
== GL_NONE
) {
1133 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
1134 fbo_incomplete(ctx
, "missing drawbuffer", j
);
1140 /* Check that the ReadBuffer is present */
1141 if (fb
->ColorReadBuffer
!= GL_NONE
) {
1142 const struct gl_renderbuffer_attachment
*att
1143 = get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
1145 if (att
->Type
== GL_NONE
) {
1146 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
1147 fbo_incomplete(ctx
, "missing readbuffer", -1);
1153 /* The OpenGL ES3 spec, in chapter 9.4. FRAMEBUFFER COMPLETENESS, says:
1155 * "Depth and stencil attachments, if present, are the same image."
1157 * This restriction is not present in the OpenGL ES2 spec.
1159 if (_mesa_is_gles3(ctx
) &&
1160 has_stencil_attachment
&& has_depth_attachment
&&
1161 !_mesa_has_depthstencil_combined(fb
)) {
1162 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
1163 fbo_incomplete(ctx
, "Depth and stencil attachments must be the same image", -1);
1167 /* Provisionally set status = COMPLETE ... */
1168 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
1170 /* ... but the driver may say the FB is incomplete.
1171 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
1174 if (ctx
->Driver
.ValidateFramebuffer
) {
1175 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
1176 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1177 fbo_incomplete(ctx
, "driver marked FBO as incomplete", -1);
1181 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
1183 * Note that if ARB_framebuffer_object is supported and the attached
1184 * renderbuffers/textures are different sizes, the framebuffer
1185 * width/height will be set to the smallest width/height.
1187 fb
->Width
= minWidth
;
1188 fb
->Height
= minHeight
;
1190 /* finally, update the visual info for the framebuffer */
1191 _mesa_update_framebuffer_visual(ctx
, fb
);
1196 GLboolean GLAPIENTRY
1197 _mesa_IsRenderbuffer(GLuint renderbuffer
)
1199 GET_CURRENT_CONTEXT(ctx
);
1200 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1202 struct gl_renderbuffer
*rb
=
1203 _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1204 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
1211 static struct gl_renderbuffer
*
1212 allocate_renderbuffer(struct gl_context
*ctx
, GLuint renderbuffer
,
1215 struct gl_renderbuffer
*newRb
;
1217 /* create new renderbuffer object */
1218 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
1220 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
1223 assert(newRb
->AllocStorage
);
1224 mtx_lock(&ctx
->Shared
->Mutex
);
1225 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
1226 newRb
->RefCount
= 1; /* referenced by hash table */
1227 mtx_unlock(&ctx
->Shared
->Mutex
);
1234 bind_renderbuffer(GLenum target
, GLuint renderbuffer
, bool allow_user_names
)
1236 struct gl_renderbuffer
*newRb
;
1237 GET_CURRENT_CONTEXT(ctx
);
1239 if (target
!= GL_RENDERBUFFER_EXT
) {
1240 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
1244 /* No need to flush here since the render buffer binding has no
1245 * effect on rendering state.
1249 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1250 if (newRb
== &DummyRenderbuffer
) {
1251 /* ID was reserved, but no real renderbuffer object made yet */
1254 else if (!newRb
&& !allow_user_names
) {
1255 /* All RB IDs must be Gen'd */
1256 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
1261 newRb
= allocate_renderbuffer(ctx
, renderbuffer
, "glBindRenderbufferEXT");
1268 assert(newRb
!= &DummyRenderbuffer
);
1270 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
1274 _mesa_BindRenderbuffer(GLenum target
, GLuint renderbuffer
)
1276 GET_CURRENT_CONTEXT(ctx
);
1278 /* OpenGL ES glBindRenderbuffer and glBindRenderbufferOES use this same
1279 * entry point, but they allow the use of user-generated names.
1281 bind_renderbuffer(target
, renderbuffer
, _mesa_is_gles(ctx
));
1285 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
1287 /* This function should not be in the dispatch table for core profile /
1288 * OpenGL 3.1, so execution should never get here in those cases -- no
1289 * need for an explicit test.
1291 bind_renderbuffer(target
, renderbuffer
, true);
1296 * Remove the specified renderbuffer or texture from any attachment point in
1300 * \c true if the renderbuffer was detached from an attachment point. \c
1304 _mesa_detach_renderbuffer(struct gl_context
*ctx
,
1305 struct gl_framebuffer
*fb
,
1309 bool progress
= false;
1311 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1312 if (fb
->Attachment
[i
].Texture
== att
1313 || fb
->Attachment
[i
].Renderbuffer
== att
) {
1314 remove_attachment(ctx
, &fb
->Attachment
[i
]);
1319 /* Section 4.4.4 (Framebuffer Completeness), subsection "Whole Framebuffer
1320 * Completeness," of the OpenGL 3.1 spec says:
1322 * "Performing any of the following actions may change whether the
1323 * framebuffer is considered complete or incomplete:
1327 * - Deleting, with DeleteTextures or DeleteRenderbuffers, an object
1328 * containing an image that is attached to a framebuffer object
1329 * that is bound to the framebuffer."
1332 invalidate_framebuffer(fb
);
1339 _mesa_DeleteRenderbuffers(GLsizei n
, const GLuint
*renderbuffers
)
1342 GET_CURRENT_CONTEXT(ctx
);
1345 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteRenderbuffers(n < 0)");
1349 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1351 for (i
= 0; i
< n
; i
++) {
1352 if (renderbuffers
[i
] > 0) {
1353 struct gl_renderbuffer
*rb
;
1354 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
1356 /* check if deleting currently bound renderbuffer object */
1357 if (rb
== ctx
->CurrentRenderbuffer
) {
1359 assert(rb
->RefCount
>= 2);
1360 _mesa_BindRenderbuffer(GL_RENDERBUFFER_EXT
, 0);
1363 /* Section 4.4.2 (Attaching Images to Framebuffer Objects),
1364 * subsection "Attaching Renderbuffer Images to a Framebuffer,"
1365 * of the OpenGL 3.1 spec says:
1367 * "If a renderbuffer object is deleted while its image is
1368 * attached to one or more attachment points in the currently
1369 * bound framebuffer, then it is as if FramebufferRenderbuffer
1370 * had been called, with a renderbuffer of 0, for each
1371 * attachment point to which this image was attached in the
1372 * currently bound framebuffer. In other words, this
1373 * renderbuffer image is first detached from all attachment
1374 * points in the currently bound framebuffer. Note that the
1375 * renderbuffer image is specifically not detached from any
1376 * non-bound framebuffers. Detaching the image from any
1377 * non-bound framebuffers is the responsibility of the
1380 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
1381 _mesa_detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
1383 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1384 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1385 _mesa_detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1388 /* Remove from hash table immediately, to free the ID.
1389 * But the object will not be freed until it's no longer
1390 * referenced anywhere else.
1392 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1394 if (rb
!= &DummyRenderbuffer
) {
1395 /* no longer referenced by hash table */
1396 _mesa_reference_renderbuffer(&rb
, NULL
);
1404 create_render_buffers(struct gl_context
*ctx
, GLsizei n
, GLuint
*renderbuffers
,
1407 const char *func
= dsa
? "glCreateRenderbuffers" : "glGenRenderbuffers";
1412 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(n<0)", func
);
1419 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1421 for (i
= 0; i
< n
; i
++) {
1422 GLuint name
= first
+ i
;
1423 renderbuffers
[i
] = name
;
1426 allocate_renderbuffer(ctx
, name
, func
);
1428 /* insert a dummy renderbuffer into the hash table */
1429 mtx_lock(&ctx
->Shared
->Mutex
);
1430 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1431 mtx_unlock(&ctx
->Shared
->Mutex
);
1438 _mesa_GenRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1440 GET_CURRENT_CONTEXT(ctx
);
1441 create_render_buffers(ctx
, n
, renderbuffers
, false);
1446 _mesa_CreateRenderbuffers(GLsizei n
, GLuint
*renderbuffers
)
1448 GET_CURRENT_CONTEXT(ctx
);
1449 create_render_buffers(ctx
, n
, renderbuffers
, true);
1454 * Given an internal format token for a render buffer, return the
1455 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1456 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1457 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1459 * This is similar to _mesa_base_tex_format() but the set of valid
1460 * internal formats is different.
1462 * Note that even if a format is determined to be legal here, validation
1463 * of the FBO may fail if the format is not supported by the driver/GPU.
1465 * \param internalFormat as passed to glRenderbufferStorage()
1466 * \return the base internal format, or 0 if internalFormat is illegal
1469 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1472 * Notes: some formats such as alpha, luminance, etc. were added
1473 * with GL_ARB_framebuffer_object.
1475 switch (internalFormat
) {
1481 return (ctx
->API
== API_OPENGL_COMPAT
&&
1482 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_ALPHA
: 0;
1486 case GL_LUMINANCE12
:
1487 case GL_LUMINANCE16
:
1488 return (ctx
->API
== API_OPENGL_COMPAT
&&
1489 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE
: 0;
1490 case GL_LUMINANCE_ALPHA
:
1491 case GL_LUMINANCE4_ALPHA4
:
1492 case GL_LUMINANCE6_ALPHA2
:
1493 case GL_LUMINANCE8_ALPHA8
:
1494 case GL_LUMINANCE12_ALPHA4
:
1495 case GL_LUMINANCE12_ALPHA12
:
1496 case GL_LUMINANCE16_ALPHA16
:
1497 return (ctx
->API
== API_OPENGL_COMPAT
&&
1498 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_LUMINANCE_ALPHA
: 0;
1502 case GL_INTENSITY12
:
1503 case GL_INTENSITY16
:
1504 return (ctx
->API
== API_OPENGL_COMPAT
&&
1505 ctx
->Extensions
.ARB_framebuffer_object
) ? GL_INTENSITY
: 0;
1515 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1517 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1526 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1528 case GL_SRGB8_ALPHA8_EXT
:
1529 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1530 case GL_STENCIL_INDEX
:
1531 case GL_STENCIL_INDEX1_EXT
:
1532 case GL_STENCIL_INDEX4_EXT
:
1533 case GL_STENCIL_INDEX16_EXT
:
1534 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1535 * OpenGL ES, but Mesa does not currently support them.
1537 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1538 case GL_STENCIL_INDEX8_EXT
:
1539 return GL_STENCIL_INDEX
;
1540 case GL_DEPTH_COMPONENT
:
1541 case GL_DEPTH_COMPONENT32
:
1542 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1543 case GL_DEPTH_COMPONENT16
:
1544 case GL_DEPTH_COMPONENT24
:
1545 return GL_DEPTH_COMPONENT
;
1546 case GL_DEPTH_STENCIL
:
1547 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_STENCIL
: 0;
1548 case GL_DEPTH24_STENCIL8
:
1549 return GL_DEPTH_STENCIL
;
1550 case GL_DEPTH_COMPONENT32F
:
1551 return ctx
->Version
>= 30
1552 || (ctx
->API
== API_OPENGL_COMPAT
&&
1553 ctx
->Extensions
.ARB_depth_buffer_float
)
1554 ? GL_DEPTH_COMPONENT
: 0;
1555 case GL_DEPTH32F_STENCIL8
:
1556 return ctx
->Version
>= 30
1557 || (ctx
->API
== API_OPENGL_COMPAT
&&
1558 ctx
->Extensions
.ARB_depth_buffer_float
)
1559 ? GL_DEPTH_STENCIL
: 0;
1562 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1565 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1569 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1572 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1574 /* signed normalized texture formats */
1578 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1583 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1587 case GL_RGB16_SNORM
:
1588 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1591 case GL_RGBA8_SNORM
:
1592 case GL_RGBA16_SNORM
:
1593 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1595 case GL_ALPHA_SNORM
:
1596 case GL_ALPHA8_SNORM
:
1597 case GL_ALPHA16_SNORM
:
1598 return ctx
->API
== API_OPENGL_COMPAT
&&
1599 ctx
->Extensions
.EXT_texture_snorm
&&
1600 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1601 case GL_LUMINANCE_SNORM
:
1602 case GL_LUMINANCE8_SNORM
:
1603 case GL_LUMINANCE16_SNORM
:
1604 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1606 case GL_LUMINANCE_ALPHA_SNORM
:
1607 case GL_LUMINANCE8_ALPHA8_SNORM
:
1608 case GL_LUMINANCE16_ALPHA16_SNORM
:
1609 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1610 ? GL_LUMINANCE_ALPHA
: 0;
1611 case GL_INTENSITY_SNORM
:
1612 case GL_INTENSITY8_SNORM
:
1613 case GL_INTENSITY16_SNORM
:
1614 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1619 return ((_mesa_is_desktop_gl(ctx
) &&
1620 ctx
->Extensions
.ARB_texture_rg
&&
1621 ctx
->Extensions
.ARB_texture_float
) ||
1622 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1626 return ((_mesa_is_desktop_gl(ctx
) &&
1627 ctx
->Extensions
.ARB_texture_rg
&&
1628 ctx
->Extensions
.ARB_texture_float
) ||
1629 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1633 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1637 return ((_mesa_is_desktop_gl(ctx
) &&
1638 ctx
->Extensions
.ARB_texture_float
) ||
1639 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1641 case GL_ALPHA16F_ARB
:
1642 case GL_ALPHA32F_ARB
:
1643 return ctx
->API
== API_OPENGL_COMPAT
&&
1644 ctx
->Extensions
.ARB_texture_float
&&
1645 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1646 case GL_LUMINANCE16F_ARB
:
1647 case GL_LUMINANCE32F_ARB
:
1648 return ctx
->API
== API_OPENGL_COMPAT
&&
1649 ctx
->Extensions
.ARB_texture_float
&&
1650 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1651 case GL_LUMINANCE_ALPHA16F_ARB
:
1652 case GL_LUMINANCE_ALPHA32F_ARB
:
1653 return ctx
->API
== API_OPENGL_COMPAT
&&
1654 ctx
->Extensions
.ARB_texture_float
&&
1655 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1656 case GL_INTENSITY16F_ARB
:
1657 case GL_INTENSITY32F_ARB
:
1658 return ctx
->API
== API_OPENGL_COMPAT
&&
1659 ctx
->Extensions
.ARB_texture_float
&&
1660 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1661 case GL_R11F_G11F_B10F
:
1662 return ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
) ||
1663 _mesa_is_gles3(ctx
) /* EXT_color_buffer_float */ )
1666 case GL_RGBA8UI_EXT
:
1667 case GL_RGBA16UI_EXT
:
1668 case GL_RGBA32UI_EXT
:
1670 case GL_RGBA16I_EXT
:
1671 case GL_RGBA32I_EXT
:
1672 return ctx
->Version
>= 30
1673 || (_mesa_is_desktop_gl(ctx
) &&
1674 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1677 case GL_RGB16UI_EXT
:
1678 case GL_RGB32UI_EXT
:
1682 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_integer
1690 return ctx
->Version
>= 30
1691 || (_mesa_is_desktop_gl(ctx
) &&
1692 ctx
->Extensions
.ARB_texture_rg
&&
1693 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1701 return ctx
->Version
>= 30
1702 || (_mesa_is_desktop_gl(ctx
) &&
1703 ctx
->Extensions
.ARB_texture_rg
&&
1704 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1706 case GL_INTENSITY8I_EXT
:
1707 case GL_INTENSITY8UI_EXT
:
1708 case GL_INTENSITY16I_EXT
:
1709 case GL_INTENSITY16UI_EXT
:
1710 case GL_INTENSITY32I_EXT
:
1711 case GL_INTENSITY32UI_EXT
:
1712 return ctx
->API
== API_OPENGL_COMPAT
&&
1713 ctx
->Extensions
.EXT_texture_integer
&&
1714 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1716 case GL_LUMINANCE8I_EXT
:
1717 case GL_LUMINANCE8UI_EXT
:
1718 case GL_LUMINANCE16I_EXT
:
1719 case GL_LUMINANCE16UI_EXT
:
1720 case GL_LUMINANCE32I_EXT
:
1721 case GL_LUMINANCE32UI_EXT
:
1722 return ctx
->API
== API_OPENGL_COMPAT
&&
1723 ctx
->Extensions
.EXT_texture_integer
&&
1724 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1726 case GL_LUMINANCE_ALPHA8I_EXT
:
1727 case GL_LUMINANCE_ALPHA8UI_EXT
:
1728 case GL_LUMINANCE_ALPHA16I_EXT
:
1729 case GL_LUMINANCE_ALPHA16UI_EXT
:
1730 case GL_LUMINANCE_ALPHA32I_EXT
:
1731 case GL_LUMINANCE_ALPHA32UI_EXT
:
1732 return ctx
->API
== API_OPENGL_COMPAT
&&
1733 ctx
->Extensions
.EXT_texture_integer
&&
1734 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1736 case GL_ALPHA8I_EXT
:
1737 case GL_ALPHA8UI_EXT
:
1738 case GL_ALPHA16I_EXT
:
1739 case GL_ALPHA16UI_EXT
:
1740 case GL_ALPHA32I_EXT
:
1741 case GL_ALPHA32UI_EXT
:
1742 return ctx
->API
== API_OPENGL_COMPAT
&&
1743 ctx
->Extensions
.EXT_texture_integer
&&
1744 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1747 return (_mesa_is_desktop_gl(ctx
) &&
1748 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1749 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1752 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1761 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1764 invalidate_rb(GLuint key
, void *data
, void *userData
)
1766 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1767 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1769 /* If this is a user-created FBO */
1770 if (_mesa_is_user_fbo(fb
)) {
1772 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1773 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1774 if (att
->Type
== GL_RENDERBUFFER
&&
1775 att
->Renderbuffer
== rb
) {
1776 /* Mark fb status as indeterminate to force re-validation */
1785 /** sentinal value, see below */
1786 #define NO_SAMPLES 1000
1790 * Helper function used by renderbuffer_storage_direct() and
1791 * renderbuffer_storage_target().
1792 * samples will be NO_SAMPLES if called by a non-multisample function.
1795 renderbuffer_storage(struct gl_context
*ctx
, struct gl_renderbuffer
*rb
,
1796 GLenum internalFormat
, GLsizei width
,
1797 GLsizei height
, GLsizei samples
, const char *func
)
1800 GLenum sample_count_error
;
1802 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1803 if (baseFormat
== 0) {
1804 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat=%s)",
1805 func
, _mesa_lookup_enum_by_nr(internalFormat
));
1809 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1810 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid width %d)", func
,
1815 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1816 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(invalid height %d)", func
,
1821 if (samples
== NO_SAMPLES
) {
1822 /* NumSamples == 0 indicates non-multisampling */
1826 /* check the sample count;
1827 * note: driver may choose to use more samples than what's requested
1829 sample_count_error
= _mesa_check_sample_count(ctx
, GL_RENDERBUFFER
,
1830 internalFormat
, samples
);
1831 if (sample_count_error
!= GL_NO_ERROR
) {
1832 _mesa_error(ctx
, sample_count_error
, "%s(samples)", func
);
1837 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1839 if (rb
->InternalFormat
== internalFormat
&&
1840 rb
->Width
== (GLuint
) width
&&
1841 rb
->Height
== (GLuint
) height
&&
1842 rb
->NumSamples
== samples
) {
1843 /* no change in allocation needed */
1847 /* These MUST get set by the AllocStorage func */
1848 rb
->Format
= MESA_FORMAT_NONE
;
1849 rb
->NumSamples
= samples
;
1851 /* Now allocate the storage */
1852 assert(rb
->AllocStorage
);
1853 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1854 /* No error - check/set fields now */
1855 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1856 assert(rb
->Width
== (GLuint
) width
);
1857 assert(rb
->Height
== (GLuint
) height
);
1858 rb
->InternalFormat
= internalFormat
;
1859 rb
->_BaseFormat
= baseFormat
;
1860 assert(rb
->_BaseFormat
!= 0);
1863 /* Probably ran out of memory - clear the fields */
1866 rb
->Format
= MESA_FORMAT_NONE
;
1867 rb
->InternalFormat
= GL_NONE
;
1868 rb
->_BaseFormat
= GL_NONE
;
1872 /* Invalidate the framebuffers the renderbuffer is attached in. */
1873 if (rb
->AttachedAnytime
) {
1874 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1879 * Helper function used by _mesa_NamedRenderbufferStorage*().
1880 * samples will be NO_SAMPLES if called by a non-multisample function.
1883 renderbuffer_storage_named(GLuint renderbuffer
, GLenum internalFormat
,
1884 GLsizei width
, GLsizei height
, GLsizei samples
,
1887 GET_CURRENT_CONTEXT(ctx
);
1889 if (MESA_VERBOSE
& VERBOSE_API
) {
1890 if (samples
== NO_SAMPLES
)
1891 _mesa_debug(ctx
, "%s(%u, %s, %d, %d)\n",
1893 _mesa_lookup_enum_by_nr(internalFormat
),
1896 _mesa_debug(ctx
, "%s(%u, %s, %d, %d, %d)\n",
1898 _mesa_lookup_enum_by_nr(internalFormat
),
1899 width
, height
, samples
);
1902 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1903 if (!rb
|| rb
== &DummyRenderbuffer
) {
1904 /* ID was reserved, but no real renderbuffer object made yet */
1905 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(invalid renderbuffer %u)",
1906 func
, renderbuffer
);
1910 renderbuffer_storage(ctx
, rb
, internalFormat
, width
, height
, samples
, func
);
1914 * Helper function used by _mesa_RenderbufferStorage() and
1915 * _mesa_RenderbufferStorageMultisample().
1916 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorage().
1919 renderbuffer_storage_target(GLenum target
, GLenum internalFormat
,
1920 GLsizei width
, GLsizei height
, GLsizei samples
,
1923 GET_CURRENT_CONTEXT(ctx
);
1925 if (MESA_VERBOSE
& VERBOSE_API
) {
1926 if (samples
== NO_SAMPLES
)
1927 _mesa_debug(ctx
, "%s(%s, %s, %d, %d)\n",
1929 _mesa_lookup_enum_by_nr(target
),
1930 _mesa_lookup_enum_by_nr(internalFormat
),
1933 _mesa_debug(ctx
, "%s(%s, %s, %d, %d, %d)\n",
1935 _mesa_lookup_enum_by_nr(target
),
1936 _mesa_lookup_enum_by_nr(internalFormat
),
1937 width
, height
, samples
);
1940 if (target
!= GL_RENDERBUFFER_EXT
) {
1941 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1945 if (!ctx
->CurrentRenderbuffer
) {
1946 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(no renderbuffer bound)",
1951 renderbuffer_storage(ctx
, ctx
->CurrentRenderbuffer
, internalFormat
, width
,
1952 height
, samples
, func
);
1957 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1959 struct gl_renderbuffer
*rb
;
1960 GET_CURRENT_CONTEXT(ctx
);
1962 if (!ctx
->Extensions
.OES_EGL_image
) {
1963 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1964 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1968 if (target
!= GL_RENDERBUFFER
) {
1969 _mesa_error(ctx
, GL_INVALID_ENUM
,
1970 "EGLImageTargetRenderbufferStorageOES");
1974 rb
= ctx
->CurrentRenderbuffer
;
1976 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1977 "EGLImageTargetRenderbufferStorageOES");
1981 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1983 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1988 * Helper function for _mesa_GetRenderbufferParameteriv() and
1989 * _mesa_GetFramebufferAttachmentParameteriv()
1990 * We have to be careful to respect the base format. For example, if a
1991 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1992 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1993 * we need to return zero.
1996 get_component_bits(GLenum pname
, GLenum baseFormat
, mesa_format format
)
1998 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1999 return _mesa_get_format_bits(format
, pname
);
2007 _mesa_RenderbufferStorage(GLenum target
, GLenum internalFormat
,
2008 GLsizei width
, GLsizei height
)
2010 /* GL_ARB_fbo says calling this function is equivalent to calling
2011 * glRenderbufferStorageMultisample() with samples=0. We pass in
2012 * a token value here just for error reporting purposes.
2014 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2015 NO_SAMPLES
, "glRenderbufferStorage");
2020 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
2021 GLenum internalFormat
,
2022 GLsizei width
, GLsizei height
)
2024 renderbuffer_storage_target(target
, internalFormat
, width
, height
,
2025 samples
, "glRenderbufferStorageMultisample");
2030 * OpenGL ES version of glRenderBufferStorage.
2033 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
2034 GLsizei width
, GLsizei height
)
2036 switch (internalFormat
) {
2038 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
2039 /* choose a closest format */
2040 internalFormat
= GL_RGB5
;
2046 renderbuffer_storage_target(target
, internalFormat
, width
, height
, 0,
2047 "glRenderbufferStorageEXT");
2051 _mesa_NamedRenderbufferStorage(GLuint renderbuffer
, GLenum internalformat
,
2052 GLsizei width
, GLsizei height
)
2054 /* GL_ARB_fbo says calling this function is equivalent to calling
2055 * glRenderbufferStorageMultisample() with samples=0. We pass in
2056 * a token value here just for error reporting purposes.
2058 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2059 NO_SAMPLES
, "glNamedRenderbufferStorage");
2063 _mesa_NamedRenderbufferStorageMultisample(GLuint renderbuffer
, GLsizei samples
,
2064 GLenum internalformat
,
2065 GLsizei width
, GLsizei height
)
2067 renderbuffer_storage_named(renderbuffer
, internalformat
, width
, height
,
2069 "glNamedRenderbufferStorageMultisample");
2074 get_render_buffer_parameteriv(struct gl_context
*ctx
,
2075 struct gl_renderbuffer
*rb
, GLenum pname
,
2076 GLint
*params
, const char *func
)
2078 /* No need to flush here since we're just quering state which is
2079 * not effected by rendering.
2083 case GL_RENDERBUFFER_WIDTH_EXT
:
2084 *params
= rb
->Width
;
2086 case GL_RENDERBUFFER_HEIGHT_EXT
:
2087 *params
= rb
->Height
;
2089 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
2090 *params
= rb
->InternalFormat
;
2092 case GL_RENDERBUFFER_RED_SIZE_EXT
:
2093 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
2094 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
2095 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
2096 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
2097 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
2098 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
2100 case GL_RENDERBUFFER_SAMPLES
:
2101 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
2102 || _mesa_is_gles3(ctx
)) {
2103 *params
= rb
->NumSamples
;
2108 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(invalid pname=%s)", func
,
2109 _mesa_lookup_enum_by_nr(pname
));
2116 _mesa_GetRenderbufferParameteriv(GLenum target
, GLenum pname
, GLint
*params
)
2118 GET_CURRENT_CONTEXT(ctx
);
2120 if (target
!= GL_RENDERBUFFER_EXT
) {
2121 _mesa_error(ctx
, GL_INVALID_ENUM
,
2122 "glGetRenderbufferParameterivEXT(target)");
2126 if (!ctx
->CurrentRenderbuffer
) {
2127 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetRenderbufferParameterivEXT"
2128 "(no renderbuffer bound)");
2132 get_render_buffer_parameteriv(ctx
, ctx
->CurrentRenderbuffer
, pname
,
2133 params
, "glGetRenderbufferParameteriv");
2138 _mesa_GetNamedRenderbufferParameteriv(GLuint renderbuffer
, GLenum pname
,
2141 GET_CURRENT_CONTEXT(ctx
);
2143 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2144 if (!rb
|| rb
== &DummyRenderbuffer
) {
2145 /* ID was reserved, but no real renderbuffer object made yet */
2146 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetNamedRenderbufferParameteriv"
2147 "(invalid renderbuffer %i)", renderbuffer
);
2151 get_render_buffer_parameteriv(ctx
, rb
, pname
, params
,
2152 "glGetNamedRenderbufferParameteriv");
2156 GLboolean GLAPIENTRY
2157 _mesa_IsFramebuffer(GLuint framebuffer
)
2159 GET_CURRENT_CONTEXT(ctx
);
2160 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
2162 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2163 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
2171 * Check if any of the attachments of the given framebuffer are textures
2172 * (render to texture). Call ctx->Driver.RenderTexture() for such
2176 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2179 assert(ctx
->Driver
.RenderTexture
);
2181 if (_mesa_is_winsys_fbo(fb
))
2182 return; /* can't render to texture with winsys framebuffers */
2184 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2185 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2186 if (att
->Texture
&& att
->Renderbuffer
->TexImage
2187 && driver_RenderTexture_is_safe(att
)) {
2188 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
2195 * Examine all the framebuffer's attachments to see if any are textures.
2196 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
2197 * notify the device driver that the texture image may have changed.
2200 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
2202 /* Skip if we know NeedsFinishRenderTexture won't be set. */
2203 if (_mesa_is_winsys_fbo(fb
) && !ctx
->Driver
.BindRenderbufferTexImage
)
2206 if (ctx
->Driver
.FinishRenderTexture
) {
2208 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
2209 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
2210 struct gl_renderbuffer
*rb
= att
->Renderbuffer
;
2211 if (rb
&& rb
->NeedsFinishRenderTexture
) {
2212 ctx
->Driver
.FinishRenderTexture(ctx
, rb
);
2220 bind_framebuffer(GLenum target
, GLuint framebuffer
, bool allow_user_names
)
2222 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
2223 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
2224 GLboolean bindReadBuf
, bindDrawBuf
;
2225 GET_CURRENT_CONTEXT(ctx
);
2228 case GL_DRAW_FRAMEBUFFER_EXT
:
2229 bindDrawBuf
= GL_TRUE
;
2230 bindReadBuf
= GL_FALSE
;
2232 case GL_READ_FRAMEBUFFER_EXT
:
2233 bindDrawBuf
= GL_FALSE
;
2234 bindReadBuf
= GL_TRUE
;
2236 case GL_FRAMEBUFFER_EXT
:
2237 bindDrawBuf
= GL_TRUE
;
2238 bindReadBuf
= GL_TRUE
;
2241 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
2246 /* Binding a user-created framebuffer object */
2247 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
2248 if (newDrawFb
== &DummyFramebuffer
) {
2249 /* ID was reserved, but no real framebuffer object made yet */
2252 else if (!newDrawFb
&& !allow_user_names
) {
2253 /* All FBO IDs must be Gen'd */
2254 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
2259 /* create new framebuffer object */
2260 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
2262 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
2265 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
2267 newReadFb
= newDrawFb
;
2270 /* Binding the window system framebuffer (which was originally set
2271 * with MakeCurrent).
2273 newDrawFb
= ctx
->WinSysDrawBuffer
;
2274 newReadFb
= ctx
->WinSysReadBuffer
;
2278 assert(newDrawFb
!= &DummyFramebuffer
);
2280 /* save pointers to current/old framebuffers */
2281 oldDrawFb
= ctx
->DrawBuffer
;
2282 oldReadFb
= ctx
->ReadBuffer
;
2284 /* check if really changing bindings */
2285 if (oldDrawFb
== newDrawFb
)
2286 bindDrawBuf
= GL_FALSE
;
2287 if (oldReadFb
== newReadFb
)
2288 bindReadBuf
= GL_FALSE
;
2291 * OK, now bind the new Draw/Read framebuffers, if they're changing.
2293 * We also check if we're beginning and/or ending render-to-texture.
2294 * When a framebuffer with texture attachments is unbound, call
2295 * ctx->Driver.FinishRenderTexture().
2296 * When a framebuffer with texture attachments is bound, call
2297 * ctx->Driver.RenderTexture().
2299 * Note that if the ReadBuffer has texture attachments we don't consider
2300 * that a render-to-texture case.
2303 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2305 /* check if old readbuffer was render-to-texture */
2306 check_end_texture_render(ctx
, oldReadFb
);
2308 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
2312 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2314 /* check if old framebuffer had any texture attachments */
2316 check_end_texture_render(ctx
, oldDrawFb
);
2318 /* check if newly bound framebuffer has any texture attachments */
2319 check_begin_texture_render(ctx
, newDrawFb
);
2321 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
2324 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
2325 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
2330 _mesa_BindFramebuffer(GLenum target
, GLuint framebuffer
)
2332 GET_CURRENT_CONTEXT(ctx
);
2334 /* OpenGL ES glBindFramebuffer and glBindFramebufferOES use this same entry
2335 * point, but they allow the use of user-generated names.
2337 bind_framebuffer(target
, framebuffer
, _mesa_is_gles(ctx
));
2342 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
2344 /* This function should not be in the dispatch table for core profile /
2345 * OpenGL 3.1, so execution should never get here in those cases -- no
2346 * need for an explicit test.
2348 bind_framebuffer(target
, framebuffer
, true);
2353 _mesa_DeleteFramebuffers(GLsizei n
, const GLuint
*framebuffers
)
2356 GET_CURRENT_CONTEXT(ctx
);
2359 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteFramebuffers(n < 0)");
2363 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2365 for (i
= 0; i
< n
; i
++) {
2366 if (framebuffers
[i
] > 0) {
2367 struct gl_framebuffer
*fb
;
2368 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
2370 assert(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
2372 /* check if deleting currently bound framebuffer object */
2373 if (fb
== ctx
->DrawBuffer
) {
2375 assert(fb
->RefCount
>= 2);
2376 _mesa_BindFramebuffer(GL_DRAW_FRAMEBUFFER
, 0);
2378 if (fb
== ctx
->ReadBuffer
) {
2380 assert(fb
->RefCount
>= 2);
2381 _mesa_BindFramebuffer(GL_READ_FRAMEBUFFER
, 0);
2384 /* remove from hash table immediately, to free the ID */
2385 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
2387 if (fb
!= &DummyFramebuffer
) {
2388 /* But the object will not be freed until it's no longer
2389 * bound in any context.
2391 _mesa_reference_framebuffer(&fb
, NULL
);
2400 _mesa_GenFramebuffers(GLsizei n
, GLuint
*framebuffers
)
2402 GET_CURRENT_CONTEXT(ctx
);
2407 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
2414 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
2416 for (i
= 0; i
< n
; i
++) {
2417 GLuint name
= first
+ i
;
2418 framebuffers
[i
] = name
;
2419 /* insert dummy placeholder into hash table */
2420 mtx_lock(&ctx
->Shared
->Mutex
);
2421 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
2422 mtx_unlock(&ctx
->Shared
->Mutex
);
2428 _mesa_CheckFramebufferStatus(GLenum target
)
2430 struct gl_framebuffer
*buffer
;
2431 GET_CURRENT_CONTEXT(ctx
);
2433 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
2435 if (MESA_VERBOSE
& VERBOSE_API
)
2436 _mesa_debug(ctx
, "glCheckFramebufferStatus(%s)\n",
2437 _mesa_lookup_enum_by_nr(target
));
2439 buffer
= get_framebuffer_target(ctx
, target
);
2441 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
2445 if (_mesa_is_winsys_fbo(buffer
)) {
2446 /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
2447 if (buffer
!= &IncompleteFramebuffer
) {
2448 return GL_FRAMEBUFFER_COMPLETE_EXT
;
2450 return GL_FRAMEBUFFER_UNDEFINED
;
2454 /* No need to flush here */
2456 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
2457 _mesa_test_framebuffer_completeness(ctx
, buffer
);
2460 return buffer
->_Status
;
2465 * Replicate the src attachment point. Used by framebuffer_texture() when
2466 * the same texture is attached at GL_DEPTH_ATTACHMENT and
2467 * GL_STENCIL_ATTACHMENT.
2470 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
2471 gl_buffer_index dst
,
2472 gl_buffer_index src
)
2474 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
2475 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
2477 assert(src_att
->Texture
!= NULL
);
2478 assert(src_att
->Renderbuffer
!= NULL
);
2480 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
2481 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
2482 dst_att
->Type
= src_att
->Type
;
2483 dst_att
->Complete
= src_att
->Complete
;
2484 dst_att
->TextureLevel
= src_att
->TextureLevel
;
2485 dst_att
->Zoffset
= src_att
->Zoffset
;
2490 * Common code called by glFramebufferTexture1D/2D/3D() and
2491 * glFramebufferTextureLayer().
2493 * \param textarget is the textarget that was passed to the
2494 * glFramebufferTexture...() function, or 0 if the corresponding function
2495 * doesn't have a textarget parameter.
2497 * \param layered is true if this function was called from
2498 * glFramebufferTexture(), false otherwise.
2501 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
2502 GLenum attachment
, GLenum textarget
, GLuint texture
,
2503 GLint level
, GLuint zoffset
, GLboolean layered
)
2505 struct gl_renderbuffer_attachment
*att
;
2506 struct gl_texture_object
*texObj
= NULL
;
2507 struct gl_framebuffer
*fb
;
2508 GLenum maxLevelsTarget
;
2510 fb
= get_framebuffer_target(ctx
, target
);
2512 _mesa_error(ctx
, GL_INVALID_ENUM
,
2513 "glFramebufferTexture%s(target=0x%x)", caller
, target
);
2517 /* check framebuffer binding */
2518 if (_mesa_is_winsys_fbo(fb
)) {
2519 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2520 "glFramebufferTexture%s", caller
);
2524 /* The textarget, level, and zoffset parameters are only validated if
2525 * texture is non-zero.
2528 GLboolean err
= GL_TRUE
;
2530 texObj
= _mesa_lookup_texture(ctx
, texture
);
2531 if (texObj
!= NULL
) {
2532 if (textarget
== 0) {
2534 /* We're being called by glFramebufferTexture() and textarget
2537 switch (texObj
->Target
) {
2539 case GL_TEXTURE_1D_ARRAY_EXT
:
2540 case GL_TEXTURE_2D_ARRAY_EXT
:
2541 case GL_TEXTURE_CUBE_MAP
:
2542 case GL_TEXTURE_CUBE_MAP_ARRAY
:
2543 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2548 case GL_TEXTURE_RECTANGLE
:
2549 case GL_TEXTURE_2D_MULTISAMPLE
:
2550 /* These texture types are valid to pass to
2551 * glFramebufferTexture(), but since they aren't layered, it
2552 * is equivalent to calling glFramebufferTexture{1D,2D}().
2556 textarget
= texObj
->Target
;
2563 /* We're being called by glFramebufferTextureLayer() and
2564 * textarget is not used. The only legal texture types for
2565 * that function are 3D and 1D/2D arrays textures.
2567 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2568 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2569 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
) &&
2570 (texObj
->Target
!= GL_TEXTURE_CUBE_MAP_ARRAY
) &&
2571 (texObj
->Target
!= GL_TEXTURE_2D_MULTISAMPLE_ARRAY
);
2575 /* Make sure textarget is consistent with the texture's type */
2576 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2577 ? !_mesa_is_cube_face(textarget
)
2578 : (texObj
->Target
!= textarget
);
2582 /* can't render to a non-existant texture */
2583 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2584 "glFramebufferTexture%s(non existant texture)",
2590 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2591 "glFramebufferTexture%s(texture target mismatch)",
2596 if (texObj
->Target
== GL_TEXTURE_3D
) {
2597 const GLuint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2598 if (zoffset
>= maxSize
) {
2599 _mesa_error(ctx
, GL_INVALID_VALUE
,
2600 "glFramebufferTexture%s(zoffset)", caller
);
2604 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2605 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
) ||
2606 (texObj
->Target
== GL_TEXTURE_CUBE_MAP_ARRAY
) ||
2607 (texObj
->Target
== GL_TEXTURE_2D_MULTISAMPLE_ARRAY
)) {
2608 if (zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
2609 _mesa_error(ctx
, GL_INVALID_VALUE
,
2610 "glFramebufferTexture%s(layer)", caller
);
2615 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2617 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2618 _mesa_error(ctx
, GL_INVALID_VALUE
,
2619 "glFramebufferTexture%s(level)", caller
);
2624 att
= get_attachment(ctx
, fb
, attachment
);
2626 _mesa_error(ctx
, GL_INVALID_ENUM
,
2627 "glFramebufferTexture%s(attachment)", caller
);
2631 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2633 mtx_lock(&fb
->Mutex
);
2635 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2636 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2637 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2638 _mesa_tex_target_to_face(textarget
) ==
2639 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2640 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2641 /* The texture object is already attached to the stencil attachment
2642 * point. Don't create a new renderbuffer; just reuse the stencil
2643 * attachment's. This is required to prevent a GL error in
2644 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2646 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2648 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2649 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2650 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2651 _mesa_tex_target_to_face(textarget
) ==
2652 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2653 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2654 /* As above, but with depth and stencil transposed. */
2655 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2658 set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2659 level
, zoffset
, layered
);
2660 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2661 /* Above we created a new renderbuffer and attached it to the
2662 * depth attachment point. Now attach it to the stencil attachment
2665 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2666 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2671 /* Set the render-to-texture flag. We'll check this flag in
2672 * glTexImage() and friends to determine if we need to revalidate
2673 * any FBOs that might be rendering into this texture.
2674 * This flag never gets cleared since it's non-trivial to determine
2675 * when all FBOs might be done rendering to this texture. That's OK
2676 * though since it's uncommon to render to a texture then repeatedly
2677 * call glTexImage() to change images in the texture.
2679 texObj
->_RenderToTexture
= GL_TRUE
;
2682 remove_attachment(ctx
, att
);
2683 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2684 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2685 remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2689 invalidate_framebuffer(fb
);
2691 mtx_unlock(&fb
->Mutex
);
2696 _mesa_FramebufferTexture1D(GLenum target
, GLenum attachment
,
2697 GLenum textarget
, GLuint texture
, GLint level
)
2699 GET_CURRENT_CONTEXT(ctx
);
2704 switch (textarget
) {
2708 case GL_TEXTURE_1D_ARRAY
:
2709 error
= !ctx
->Extensions
.EXT_texture_array
;
2716 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2717 "glFramebufferTexture1D(textarget=%s)",
2718 _mesa_lookup_enum_by_nr(textarget
));
2723 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2724 level
, 0, GL_FALSE
);
2729 _mesa_FramebufferTexture2D(GLenum target
, GLenum attachment
,
2730 GLenum textarget
, GLuint texture
, GLint level
)
2732 GET_CURRENT_CONTEXT(ctx
);
2737 switch (textarget
) {
2741 case GL_TEXTURE_RECTANGLE
:
2742 error
= _mesa_is_gles(ctx
)
2743 || !ctx
->Extensions
.NV_texture_rectangle
;
2745 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2746 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2747 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2748 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2749 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2750 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2751 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2753 case GL_TEXTURE_2D_ARRAY
:
2754 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2755 || !ctx
->Extensions
.EXT_texture_array
;
2757 case GL_TEXTURE_2D_MULTISAMPLE
:
2758 case GL_TEXTURE_2D_MULTISAMPLE_ARRAY
:
2759 error
= _mesa_is_gles(ctx
)
2760 || !ctx
->Extensions
.ARB_texture_multisample
;
2767 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2768 "glFramebufferTexture2D(textarget=%s)",
2769 _mesa_lookup_enum_by_nr(textarget
));
2774 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2775 level
, 0, GL_FALSE
);
2780 _mesa_FramebufferTexture3D(GLenum target
, GLenum attachment
,
2781 GLenum textarget
, GLuint texture
,
2782 GLint level
, GLint zoffset
)
2784 GET_CURRENT_CONTEXT(ctx
);
2786 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2787 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2788 "glFramebufferTexture3D(textarget)");
2792 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2793 level
, zoffset
, GL_FALSE
);
2798 _mesa_FramebufferTextureLayer(GLenum target
, GLenum attachment
,
2799 GLuint texture
, GLint level
, GLint layer
)
2801 GET_CURRENT_CONTEXT(ctx
);
2803 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2804 level
, layer
, GL_FALSE
);
2809 _mesa_FramebufferTexture(GLenum target
, GLenum attachment
,
2810 GLuint texture
, GLint level
)
2812 GET_CURRENT_CONTEXT(ctx
);
2814 if (_mesa_has_geometry_shaders(ctx
)) {
2815 framebuffer_texture(ctx
, "", target
, attachment
, 0, texture
,
2818 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2819 "unsupported function (glFramebufferTexture) called");
2825 _mesa_FramebufferRenderbuffer(GLenum target
, GLenum attachment
,
2826 GLenum renderbufferTarget
,
2827 GLuint renderbuffer
)
2829 struct gl_renderbuffer_attachment
*att
;
2830 struct gl_framebuffer
*fb
;
2831 struct gl_renderbuffer
*rb
;
2832 GET_CURRENT_CONTEXT(ctx
);
2834 fb
= get_framebuffer_target(ctx
, target
);
2836 _mesa_error(ctx
, GL_INVALID_ENUM
,
2837 "glFramebufferRenderbuffer(target)");
2841 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2842 _mesa_error(ctx
, GL_INVALID_ENUM
,
2843 "glFramebufferRenderbuffer(renderbufferTarget)");
2847 if (_mesa_is_winsys_fbo(fb
)) {
2848 /* Can't attach new renderbuffers to a window system framebuffer */
2849 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbuffer");
2853 att
= get_attachment(ctx
, fb
, attachment
);
2855 _mesa_error(ctx
, GL_INVALID_ENUM
,
2856 "glFramebufferRenderbuffer(invalid attachment %s)",
2857 _mesa_lookup_enum_by_nr(attachment
));
2862 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2864 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2865 "glFramebufferRenderbuffer(non-existant"
2866 " renderbuffer %u)", renderbuffer
);
2869 else if (rb
== &DummyRenderbuffer
) {
2870 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2871 "glFramebufferRenderbuffer(renderbuffer %u)",
2877 /* remove renderbuffer attachment */
2881 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2882 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2883 /* make sure the renderbuffer is a depth/stencil format */
2884 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2885 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2886 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2887 "glFramebufferRenderbuffer(renderbuffer"
2888 " is not DEPTH_STENCIL format)");
2893 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2895 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2896 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2898 /* Some subsequent GL commands may depend on the framebuffer's visual
2899 * after the binding is updated. Update visual info now.
2901 _mesa_update_framebuffer_visual(ctx
, fb
);
2906 _mesa_GetFramebufferAttachmentParameteriv(GLenum target
, GLenum attachment
,
2907 GLenum pname
, GLint
*params
)
2909 const struct gl_renderbuffer_attachment
*att
;
2910 struct gl_framebuffer
*buffer
;
2912 GET_CURRENT_CONTEXT(ctx
);
2914 /* The error differs in GL and GLES. */
2915 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2917 buffer
= get_framebuffer_target(ctx
, target
);
2919 _mesa_error(ctx
, GL_INVALID_ENUM
,
2920 "glGetFramebufferAttachmentParameteriv(target)");
2924 if (_mesa_is_winsys_fbo(buffer
)) {
2925 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2928 * "If the framebuffer currently bound to target is zero, then
2929 * INVALID_OPERATION is generated."
2931 * The EXT_framebuffer_object spec has the same wording, and the
2932 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2935 if ((!_mesa_is_desktop_gl(ctx
) ||
2936 !ctx
->Extensions
.ARB_framebuffer_object
)
2937 && !_mesa_is_gles3(ctx
)) {
2938 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2939 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2943 if (_mesa_is_gles3(ctx
) && attachment
!= GL_BACK
&&
2944 attachment
!= GL_DEPTH
&& attachment
!= GL_STENCIL
) {
2945 _mesa_error(ctx
, GL_INVALID_ENUM
,
2946 "glGetFramebufferAttachmentParameteriv(attachment)");
2949 /* the default / window-system FBO */
2950 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2953 /* user-created framebuffer FBO */
2954 att
= get_attachment(ctx
, buffer
, attachment
);
2958 _mesa_error(ctx
, GL_INVALID_ENUM
,
2959 "glGetFramebufferAttachmentParameteriv(attachment)");
2963 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2964 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2965 if (pname
== GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
) {
2966 /* This behavior is first specified in OpenGL 4.4 specification.
2968 * From the OpenGL 4.4 spec page 275:
2969 * "This query cannot be performed for a combined depth+stencil
2970 * attachment, since it does not have a single format."
2972 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2973 "glGetFramebufferAttachmentParameteriv("
2974 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
2975 " is invalid for depth+stencil attachment)");
2978 /* the depth and stencil attachments must point to the same buffer */
2979 depthAtt
= get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2980 stencilAtt
= get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2981 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2982 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2983 "glGetFramebufferAttachmentParameteriv(DEPTH/STENCIL"
2984 " attachments differ)");
2989 /* No need to flush here */
2992 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2993 *params
= _mesa_is_winsys_fbo(buffer
)
2994 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2996 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2997 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2998 *params
= att
->Renderbuffer
->Name
;
3000 else if (att
->Type
== GL_TEXTURE
) {
3001 *params
= att
->Texture
->Name
;
3004 assert(att
->Type
== GL_NONE
);
3005 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
3008 goto invalid_pname_enum
;
3012 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
3013 if (att
->Type
== GL_TEXTURE
) {
3014 *params
= att
->TextureLevel
;
3016 else if (att
->Type
== GL_NONE
) {
3017 _mesa_error(ctx
, err
,
3018 "glGetFramebufferAttachmentParameteriv(pname)");
3021 goto invalid_pname_enum
;
3024 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
3025 if (att
->Type
== GL_TEXTURE
) {
3026 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
3027 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
3033 else if (att
->Type
== GL_NONE
) {
3034 _mesa_error(ctx
, err
,
3035 "glGetFramebufferAttachmentParameteriv(pname)");
3038 goto invalid_pname_enum
;
3041 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
3042 if (ctx
->API
== API_OPENGLES
) {
3043 goto invalid_pname_enum
;
3044 } else if (att
->Type
== GL_NONE
) {
3045 _mesa_error(ctx
, err
,
3046 "glGetFramebufferAttachmentParameteriv(pname)");
3047 } else if (att
->Type
== GL_TEXTURE
) {
3048 if (att
->Texture
&& (att
->Texture
->Target
== GL_TEXTURE_3D
||
3049 att
->Texture
->Target
== GL_TEXTURE_2D_ARRAY
)) {
3050 *params
= att
->Zoffset
;
3057 goto invalid_pname_enum
;
3060 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
3061 if ((!_mesa_is_desktop_gl(ctx
) ||
3062 !ctx
->Extensions
.ARB_framebuffer_object
)
3063 && !_mesa_is_gles3(ctx
)) {
3064 goto invalid_pname_enum
;
3066 else if (att
->Type
== GL_NONE
) {
3067 _mesa_error(ctx
, err
,
3068 "glGetFramebufferAttachmentParameteriv(pname)");
3071 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
3073 _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
3076 /* According to ARB_framebuffer_sRGB, we should return LINEAR
3077 * if the sRGB conversion is unsupported. */
3078 *params
= GL_LINEAR
;
3082 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
3083 if ((ctx
->API
!= API_OPENGL_COMPAT
||
3084 !ctx
->Extensions
.ARB_framebuffer_object
)
3085 && ctx
->API
!= API_OPENGL_CORE
3086 && !_mesa_is_gles3(ctx
)) {
3087 goto invalid_pname_enum
;
3089 else if (att
->Type
== GL_NONE
) {
3090 _mesa_error(ctx
, err
,
3091 "glGetFramebufferAttachmentParameteriv(pname)");
3094 mesa_format format
= att
->Renderbuffer
->Format
;
3096 /* Page 235 (page 247 of the PDF) in section 6.1.13 of the OpenGL ES
3099 * "If pname is FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE.... If
3100 * attachment is DEPTH_STENCIL_ATTACHMENT the query will fail and
3101 * generate an INVALID_OPERATION error.
3103 if (_mesa_is_gles3(ctx
) &&
3104 attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
3105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3106 "glGetFramebufferAttachmentParameteriv(cannot query "
3107 "GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE of "
3108 "GL_DEPTH_STENCIL_ATTACHMENT");
3112 if (format
== MESA_FORMAT_S_UINT8
) {
3116 else if (format
== MESA_FORMAT_Z32_FLOAT_S8X24_UINT
) {
3117 /* depends on the attachment parameter */
3118 if (attachment
== GL_STENCIL_ATTACHMENT
) {
3126 *params
= _mesa_get_format_datatype(format
);
3130 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
3131 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
3132 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
3133 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
3134 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
3135 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
3136 if ((!_mesa_is_desktop_gl(ctx
) ||
3137 !ctx
->Extensions
.ARB_framebuffer_object
)
3138 && !_mesa_is_gles3(ctx
)) {
3139 goto invalid_pname_enum
;
3141 else if (att
->Type
== GL_NONE
) {
3142 _mesa_error(ctx
, err
,
3143 "glGetFramebufferAttachmentParameteriv(pname)");
3145 else if (att
->Texture
) {
3146 const struct gl_texture_image
*texImage
=
3147 _mesa_select_tex_image(att
->Texture
, att
->Texture
->Target
,
3150 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
3151 texImage
->TexFormat
);
3157 else if (att
->Renderbuffer
) {
3158 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
3159 att
->Renderbuffer
->Format
);
3162 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
3163 " invalid FBO attachment structure");
3166 case GL_FRAMEBUFFER_ATTACHMENT_LAYERED
:
3167 if (!_mesa_has_geometry_shaders(ctx
)) {
3168 goto invalid_pname_enum
;
3169 } else if (att
->Type
== GL_TEXTURE
) {
3170 *params
= att
->Layered
;
3171 } else if (att
->Type
== GL_NONE
) {
3172 _mesa_error(ctx
, err
,
3173 "glGetFramebufferAttachmentParameteriv(pname)");
3175 goto invalid_pname_enum
;
3179 goto invalid_pname_enum
;
3185 _mesa_error(ctx
, GL_INVALID_ENUM
,
3186 "glGetFramebufferAttachmentParameteriv(pname)");
3192 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3193 const GLenum
*attachments
, GLint x
, GLint y
,
3194 GLsizei width
, GLsizei height
, const char *name
)
3197 struct gl_framebuffer
*fb
;
3198 GET_CURRENT_CONTEXT(ctx
);
3200 fb
= get_framebuffer_target(ctx
, target
);
3202 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3206 if (numAttachments
< 0) {
3207 _mesa_error(ctx
, GL_INVALID_VALUE
,
3208 "%s(numAttachments < 0)", name
);
3212 /* The GL_ARB_invalidate_subdata spec says:
3214 * "If an attachment is specified that does not exist in the
3215 * framebuffer bound to <target>, it is ignored."
3219 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3220 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3221 * INVALID_OPERATION is generated."
3223 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3224 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3225 * set of retrictions).
3227 for (i
= 0; i
< numAttachments
; i
++) {
3228 if (_mesa_is_winsys_fbo(fb
)) {
3229 switch (attachments
[i
]) {
3235 /* Accumulation buffers and auxilary buffers were removed in
3236 * OpenGL 3.1, and they never existed in OpenGL ES.
3238 if (ctx
->API
!= API_OPENGL_COMPAT
)
3248 case GL_FRONT_RIGHT
:
3249 if (!_mesa_is_desktop_gl(ctx
))
3256 switch (attachments
[i
]) {
3257 case GL_DEPTH_ATTACHMENT
:
3258 case GL_STENCIL_ATTACHMENT
:
3260 case GL_DEPTH_STENCIL_ATTACHMENT
:
3261 /* GL_DEPTH_STENCIL_ATTACHMENT is a valid attachment point only
3262 * in desktop and ES 3.0 profiles. Note that OES_packed_depth_stencil
3263 * extension does not make this attachment point valid on ES 2.0.
3265 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
))
3268 case GL_COLOR_ATTACHMENT0
:
3269 case GL_COLOR_ATTACHMENT1
:
3270 case GL_COLOR_ATTACHMENT2
:
3271 case GL_COLOR_ATTACHMENT3
:
3272 case GL_COLOR_ATTACHMENT4
:
3273 case GL_COLOR_ATTACHMENT5
:
3274 case GL_COLOR_ATTACHMENT6
:
3275 case GL_COLOR_ATTACHMENT7
:
3276 case GL_COLOR_ATTACHMENT8
:
3277 case GL_COLOR_ATTACHMENT9
:
3278 case GL_COLOR_ATTACHMENT10
:
3279 case GL_COLOR_ATTACHMENT11
:
3280 case GL_COLOR_ATTACHMENT12
:
3281 case GL_COLOR_ATTACHMENT13
:
3282 case GL_COLOR_ATTACHMENT14
:
3283 case GL_COLOR_ATTACHMENT15
: {
3284 unsigned k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3285 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3286 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3287 "%s(attachment >= max. color attachments)", name
);
3298 /* We don't actually do anything for this yet. Just return after
3299 * validating the parameters and generating the required errors.
3304 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3310 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3311 const GLenum
*attachments
, GLint x
, GLint y
,
3312 GLsizei width
, GLsizei height
)
3314 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3315 x
, y
, width
, height
,
3316 "glInvalidateSubFramebuffer");
3321 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3322 const GLenum
*attachments
)
3324 /* The GL_ARB_invalidate_subdata spec says:
3328 * void InvalidateFramebuffer(enum target,
3329 * sizei numAttachments,
3330 * const enum *attachments);
3332 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3333 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3334 * <MAX_VIEWPORT_DIMS[1]> respectively."
3336 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3338 MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3339 "glInvalidateFramebuffer");
3344 _mesa_DiscardFramebufferEXT(GLenum target
, GLsizei numAttachments
,
3345 const GLenum
*attachments
)
3347 struct gl_framebuffer
*fb
;
3350 GET_CURRENT_CONTEXT(ctx
);
3352 fb
= get_framebuffer_target(ctx
, target
);
3354 _mesa_error(ctx
, GL_INVALID_ENUM
,
3355 "glDiscardFramebufferEXT(target %s)",
3356 _mesa_lookup_enum_by_nr(target
));
3360 if (numAttachments
< 0) {
3361 _mesa_error(ctx
, GL_INVALID_VALUE
,
3362 "glDiscardFramebufferEXT(numAttachments < 0)");
3366 for (i
= 0; i
< numAttachments
; i
++) {
3367 switch (attachments
[i
]) {
3371 if (_mesa_is_user_fbo(fb
))
3374 case GL_COLOR_ATTACHMENT0
:
3375 case GL_DEPTH_ATTACHMENT
:
3376 case GL_STENCIL_ATTACHMENT
:
3377 if (_mesa_is_winsys_fbo(fb
))
3385 if (ctx
->Driver
.DiscardFramebuffer
)
3386 ctx
->Driver
.DiscardFramebuffer(ctx
, target
, numAttachments
, attachments
);
3391 _mesa_error(ctx
, GL_INVALID_ENUM
,
3392 "glDiscardFramebufferEXT(attachment %s)",
3393 _mesa_lookup_enum_by_nr(attachments
[i
]));