2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * GL_EXT/ARB_framebuffer_object extensions
40 #include "framebuffer.h"
41 #include "glformats.h"
44 #include "mfeatures.h"
46 #include "renderbuffer.h"
52 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
59 * None of the GL_EXT_framebuffer_object functions are compiled into
66 * When glGenRender/FramebuffersEXT() is called we insert pointers to
67 * these placeholder objects into the hash table.
68 * Later, when the object ID is first bound, we replace the placeholder
69 * with the real frame/renderbuffer.
71 static struct gl_framebuffer DummyFramebuffer
;
72 static struct gl_renderbuffer DummyRenderbuffer
;
74 /* We bind this framebuffer when applications pass a NULL
75 * drawable/surface in make current. */
76 static struct gl_framebuffer IncompleteFramebuffer
;
80 delete_dummy_renderbuffer(struct gl_renderbuffer
*rb
)
86 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
93 _mesa_init_fbobjects(struct gl_context
*ctx
)
95 _glthread_INIT_MUTEX(DummyFramebuffer
.Mutex
);
96 _glthread_INIT_MUTEX(DummyRenderbuffer
.Mutex
);
97 _glthread_INIT_MUTEX(IncompleteFramebuffer
.Mutex
);
98 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
99 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
100 IncompleteFramebuffer
.Delete
= delete_dummy_framebuffer
;
103 struct gl_framebuffer
*
104 _mesa_get_incomplete_framebuffer(void)
106 return &IncompleteFramebuffer
;
110 * Helper routine for getting a gl_renderbuffer.
112 struct gl_renderbuffer
*
113 _mesa_lookup_renderbuffer(struct gl_context
*ctx
, GLuint id
)
115 struct gl_renderbuffer
*rb
;
120 rb
= (struct gl_renderbuffer
*)
121 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
127 * Helper routine for getting a gl_framebuffer.
129 struct gl_framebuffer
*
130 _mesa_lookup_framebuffer(struct gl_context
*ctx
, GLuint id
)
132 struct gl_framebuffer
*fb
;
137 fb
= (struct gl_framebuffer
*)
138 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
144 * Mark the given framebuffer as invalid. This will force the
145 * test for framebuffer completeness to be done before the framebuffer
149 invalidate_framebuffer(struct gl_framebuffer
*fb
)
151 fb
->_Status
= 0; /* "indeterminate" */
156 * Return the gl_framebuffer object which corresponds to the given
157 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
158 * Check support for GL_EXT_framebuffer_blit to determine if certain
160 * \return gl_framebuffer pointer or NULL if target is illegal
162 static struct gl_framebuffer
*
163 get_framebuffer_target(struct gl_context
*ctx
, GLenum target
)
166 case GL_DRAW_FRAMEBUFFER
:
167 return ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
)
168 ? ctx
->DrawBuffer
: NULL
;
169 case GL_READ_FRAMEBUFFER
:
170 return ctx
->Extensions
.EXT_framebuffer_blit
&& _mesa_is_desktop_gl(ctx
)
171 ? ctx
->ReadBuffer
: NULL
;
172 case GL_FRAMEBUFFER_EXT
:
173 return ctx
->DrawBuffer
;
181 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
182 * gl_renderbuffer_attachment object.
183 * This function is only used for user-created FB objects, not the
184 * default / window-system FB object.
185 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
186 * the depth buffer attachment point.
188 struct gl_renderbuffer_attachment
*
189 _mesa_get_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
194 assert(_mesa_is_user_fbo(fb
));
196 switch (attachment
) {
197 case GL_COLOR_ATTACHMENT0_EXT
:
198 case GL_COLOR_ATTACHMENT1_EXT
:
199 case GL_COLOR_ATTACHMENT2_EXT
:
200 case GL_COLOR_ATTACHMENT3_EXT
:
201 case GL_COLOR_ATTACHMENT4_EXT
:
202 case GL_COLOR_ATTACHMENT5_EXT
:
203 case GL_COLOR_ATTACHMENT6_EXT
:
204 case GL_COLOR_ATTACHMENT7_EXT
:
205 case GL_COLOR_ATTACHMENT8_EXT
:
206 case GL_COLOR_ATTACHMENT9_EXT
:
207 case GL_COLOR_ATTACHMENT10_EXT
:
208 case GL_COLOR_ATTACHMENT11_EXT
:
209 case GL_COLOR_ATTACHMENT12_EXT
:
210 case GL_COLOR_ATTACHMENT13_EXT
:
211 case GL_COLOR_ATTACHMENT14_EXT
:
212 case GL_COLOR_ATTACHMENT15_EXT
:
213 /* Only OpenGL ES 1.x forbids color attachments other than
214 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
217 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
218 if (i
>= ctx
->Const
.MaxColorAttachments
219 || (i
> 0 && ctx
->API
== API_OPENGLES
)) {
222 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
223 case GL_DEPTH_STENCIL_ATTACHMENT
:
224 if (!_mesa_is_desktop_gl(ctx
))
227 case GL_DEPTH_ATTACHMENT_EXT
:
228 return &fb
->Attachment
[BUFFER_DEPTH
];
229 case GL_STENCIL_ATTACHMENT_EXT
:
230 return &fb
->Attachment
[BUFFER_STENCIL
];
238 * As above, but only used for getting attachments of the default /
239 * window-system framebuffer (not user-created framebuffer objects).
241 static struct gl_renderbuffer_attachment
*
242 _mesa_get_fb0_attachment(struct gl_context
*ctx
, struct gl_framebuffer
*fb
,
245 assert(_mesa_is_winsys_fbo(fb
));
247 switch (attachment
) {
249 return &fb
->Attachment
[BUFFER_FRONT_LEFT
];
251 return &fb
->Attachment
[BUFFER_FRONT_RIGHT
];
253 return &fb
->Attachment
[BUFFER_BACK_LEFT
];
255 return &fb
->Attachment
[BUFFER_BACK_RIGHT
];
257 if (fb
->Visual
.numAuxBuffers
== 1) {
258 return &fb
->Attachment
[BUFFER_AUX0
];
262 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
264 * "If the default framebuffer is bound to target, then attachment must
265 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
266 * identifying a color buffer; DEPTH, identifying the depth buffer; or
267 * STENCIL, identifying the stencil buffer."
269 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
270 * language. However, revision #33 of the ARB_framebuffer_object spec
273 * "If the default framebuffer is bound to <target>, then <attachment>
274 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
275 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
276 * depth buffer, or the stencil buffer, and <pname> may be
277 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
278 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
280 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
281 * from glext.h, so shipping apps should not use those values.
283 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
284 * support queries of the window system FBO.
287 return &fb
->Attachment
[BUFFER_DEPTH
];
289 return &fb
->Attachment
[BUFFER_STENCIL
];
298 * Remove any texture or renderbuffer attached to the given attachment
299 * point. Update reference counts, etc.
302 _mesa_remove_attachment(struct gl_context
*ctx
,
303 struct gl_renderbuffer_attachment
*att
)
305 if (att
->Type
== GL_TEXTURE
) {
306 ASSERT(att
->Texture
);
307 if (ctx
->Driver
.FinishRenderTexture
) {
308 /* tell driver that we're done rendering to this texture. */
309 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
311 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
312 ASSERT(!att
->Texture
);
314 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
315 ASSERT(!att
->Texture
);
316 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
317 ASSERT(!att
->Renderbuffer
);
320 att
->Complete
= GL_TRUE
;
325 * Bind a texture object to an attachment point.
326 * The previous binding, if any, will be removed first.
329 _mesa_set_texture_attachment(struct gl_context
*ctx
,
330 struct gl_framebuffer
*fb
,
331 struct gl_renderbuffer_attachment
*att
,
332 struct gl_texture_object
*texObj
,
333 GLenum texTarget
, GLuint level
, GLuint zoffset
)
335 if (att
->Texture
== texObj
) {
336 /* re-attaching same texture */
337 ASSERT(att
->Type
== GL_TEXTURE
);
338 if (ctx
->Driver
.FinishRenderTexture
)
339 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
343 if (ctx
->Driver
.FinishRenderTexture
&& att
->Texture
)
344 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
345 _mesa_remove_attachment(ctx
, att
);
346 att
->Type
= GL_TEXTURE
;
347 assert(!att
->Texture
);
348 _mesa_reference_texobj(&att
->Texture
, texObj
);
351 /* always update these fields */
352 att
->TextureLevel
= level
;
353 att
->CubeMapFace
= _mesa_tex_target_to_face(texTarget
);
354 att
->Zoffset
= zoffset
;
355 att
->Complete
= GL_FALSE
;
357 if (_mesa_get_attachment_teximage(att
)) {
358 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
361 invalidate_framebuffer(fb
);
366 * Bind a renderbuffer to an attachment point.
367 * The previous binding, if any, will be removed first.
370 _mesa_set_renderbuffer_attachment(struct gl_context
*ctx
,
371 struct gl_renderbuffer_attachment
*att
,
372 struct gl_renderbuffer
*rb
)
374 /* XXX check if re-doing same attachment, exit early */
375 _mesa_remove_attachment(ctx
, att
);
376 att
->Type
= GL_RENDERBUFFER_EXT
;
377 att
->Texture
= NULL
; /* just to be safe */
378 att
->Complete
= GL_FALSE
;
379 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
384 * Fallback for ctx->Driver.FramebufferRenderbuffer()
385 * Attach a renderbuffer object to a framebuffer object.
388 _mesa_framebuffer_renderbuffer(struct gl_context
*ctx
,
389 struct gl_framebuffer
*fb
,
390 GLenum attachment
, struct gl_renderbuffer
*rb
)
392 struct gl_renderbuffer_attachment
*att
;
394 _glthread_LOCK_MUTEX(fb
->Mutex
);
396 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
399 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
400 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
401 /* do stencil attachment here (depth already done above) */
402 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
404 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
406 rb
->AttachedAnytime
= GL_TRUE
;
409 _mesa_remove_attachment(ctx
, att
);
412 invalidate_framebuffer(fb
);
414 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
419 * Fallback for ctx->Driver.ValidateFramebuffer()
420 * Check if the renderbuffer's formats are supported by the software
422 * Drivers should probably override this.
425 _mesa_validate_framebuffer(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
428 for (buf
= 0; buf
< BUFFER_COUNT
; buf
++) {
429 const struct gl_renderbuffer
*rb
= fb
->Attachment
[buf
].Renderbuffer
;
431 switch (rb
->_BaseFormat
) {
433 case GL_LUMINANCE_ALPHA
:
438 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
442 switch (rb
->Format
) {
443 /* XXX This list is likely incomplete. */
444 case MESA_FORMAT_RGB9_E5_FLOAT
:
445 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
448 /* render buffer format is supported by software rendering */
460 att_incomplete(const char *msg
)
462 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
463 _mesa_debug(NULL
, "attachment incomplete: %s\n", msg
);
472 fbo_incomplete(const char *msg
, int index
)
474 if (MESA_DEBUG_FLAGS
& DEBUG_INCOMPLETE_FBO
) {
475 _mesa_debug(NULL
, "FBO Incomplete: %s [%d]\n", msg
, index
);
481 * Is the given base format a legal format for a color renderbuffer?
484 _mesa_is_legal_color_format(const struct gl_context
*ctx
, GLenum baseFormat
)
486 switch (baseFormat
) {
491 case GL_LUMINANCE_ALPHA
:
494 return ctx
->Extensions
.ARB_framebuffer_object
;
497 return ctx
->Extensions
.ARB_texture_rg
;
505 * Is the given base format a legal format for a depth/stencil renderbuffer?
508 is_legal_depth_format(const struct gl_context
*ctx
, GLenum baseFormat
)
510 switch (baseFormat
) {
511 case GL_DEPTH_COMPONENT
:
512 case GL_DEPTH_STENCIL_EXT
:
521 * Test if an attachment point is complete and update its Complete field.
522 * \param format if GL_COLOR, this is a color attachment point,
523 * if GL_DEPTH, this is a depth component attachment point,
524 * if GL_STENCIL, this is a stencil component attachment point.
527 test_attachment_completeness(const struct gl_context
*ctx
, GLenum format
,
528 struct gl_renderbuffer_attachment
*att
)
530 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
532 /* assume complete */
533 att
->Complete
= GL_TRUE
;
535 /* Look for reasons why the attachment might be incomplete */
536 if (att
->Type
== GL_TEXTURE
) {
537 const struct gl_texture_object
*texObj
= att
->Texture
;
538 struct gl_texture_image
*texImage
;
542 att_incomplete("no texobj");
543 att
->Complete
= GL_FALSE
;
547 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
549 att_incomplete("no teximage");
550 att
->Complete
= GL_FALSE
;
553 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
554 att_incomplete("teximage width/height=0");
555 printf("texobj = %u\n", texObj
->Name
);
556 printf("level = %d\n", att
->TextureLevel
);
557 att
->Complete
= GL_FALSE
;
560 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
561 att_incomplete("bad z offset");
562 att
->Complete
= GL_FALSE
;
566 baseFormat
= _mesa_get_format_base_format(texImage
->TexFormat
);
568 if (format
== GL_COLOR
) {
569 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
570 att_incomplete("bad format");
571 att
->Complete
= GL_FALSE
;
574 if (_mesa_is_format_compressed(texImage
->TexFormat
)) {
575 att_incomplete("compressed internalformat");
576 att
->Complete
= GL_FALSE
;
580 else if (format
== GL_DEPTH
) {
581 if (baseFormat
== GL_DEPTH_COMPONENT
) {
584 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
585 ctx
->Extensions
.ARB_depth_texture
&&
586 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
590 att
->Complete
= GL_FALSE
;
591 att_incomplete("bad depth format");
596 ASSERT(format
== GL_STENCIL
);
597 if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
598 ctx
->Extensions
.ARB_depth_texture
&&
599 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
603 /* no such thing as stencil-only textures */
604 att_incomplete("illegal stencil texture");
605 att
->Complete
= GL_FALSE
;
610 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
611 const GLenum baseFormat
=
612 _mesa_get_format_base_format(att
->Renderbuffer
->Format
);
614 ASSERT(att
->Renderbuffer
);
615 if (!att
->Renderbuffer
->InternalFormat
||
616 att
->Renderbuffer
->Width
< 1 ||
617 att
->Renderbuffer
->Height
< 1) {
618 att_incomplete("0x0 renderbuffer");
619 att
->Complete
= GL_FALSE
;
622 if (format
== GL_COLOR
) {
623 if (!_mesa_is_legal_color_format(ctx
, baseFormat
)) {
624 att_incomplete("bad renderbuffer color format");
625 att
->Complete
= GL_FALSE
;
629 else if (format
== GL_DEPTH
) {
630 if (baseFormat
== GL_DEPTH_COMPONENT
) {
633 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
634 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
638 att_incomplete("bad renderbuffer depth format");
639 att
->Complete
= GL_FALSE
;
644 assert(format
== GL_STENCIL
);
645 if (baseFormat
== GL_STENCIL_INDEX
) {
648 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
649 baseFormat
== GL_DEPTH_STENCIL_EXT
) {
653 att
->Complete
= GL_FALSE
;
654 att_incomplete("bad renderbuffer stencil format");
660 ASSERT(att
->Type
== GL_NONE
);
668 * Test if the given framebuffer object is complete and update its
669 * Status field with the results.
670 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
671 * driver to make hardware-specific validation/completeness checks.
672 * Also update the framebuffer's Width and Height fields if the
673 * framebuffer is complete.
676 _mesa_test_framebuffer_completeness(struct gl_context
*ctx
,
677 struct gl_framebuffer
*fb
)
680 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
681 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
682 GLint numSamples
= -1;
686 assert(_mesa_is_user_fbo(fb
));
688 /* we're changing framebuffer fields here */
689 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
695 /* Start at -2 to more easily loop over all attachment points.
700 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
701 struct gl_renderbuffer_attachment
*att
;
706 * XXX for ARB_fbo, only check color buffers that are named by
707 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
710 /* check for attachment completeness
713 att
= &fb
->Attachment
[BUFFER_DEPTH
];
714 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
715 if (!att
->Complete
) {
716 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
717 fbo_incomplete("depth attachment incomplete", -1);
722 att
= &fb
->Attachment
[BUFFER_STENCIL
];
723 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
724 if (!att
->Complete
) {
725 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
726 fbo_incomplete("stencil attachment incomplete", -1);
731 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
732 test_attachment_completeness(ctx
, GL_COLOR
, att
);
733 if (!att
->Complete
) {
734 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
735 fbo_incomplete("color attachment incomplete", i
);
740 /* get width, height, format of the renderbuffer/texture
742 if (att
->Type
== GL_TEXTURE
) {
743 const struct gl_texture_image
*texImg
=
744 _mesa_get_attachment_teximage(att
);
745 minWidth
= MIN2(minWidth
, texImg
->Width
);
746 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
747 minHeight
= MIN2(minHeight
, texImg
->Height
);
748 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
749 f
= texImg
->_BaseFormat
;
750 attFormat
= texImg
->TexFormat
;
752 if (!_mesa_is_legal_color_format(ctx
, f
) &&
753 !is_legal_depth_format(ctx
, f
)) {
754 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
755 fbo_incomplete("texture attachment incomplete", -1);
759 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
760 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
761 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
762 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
763 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
764 f
= att
->Renderbuffer
->InternalFormat
;
765 attFormat
= att
->Renderbuffer
->Format
;
769 assert(att
->Type
== GL_NONE
);
773 if (att
->Renderbuffer
&& numSamples
< 0) {
775 numSamples
= att
->Renderbuffer
->NumSamples
;
778 /* check if integer color */
779 fb
->_IntegerColor
= _mesa_is_format_integer_color(attFormat
);
781 /* Error-check width, height, format, samples
783 if (numImages
== 1) {
784 /* save format, num samples */
790 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
791 /* check that width, height, format are same */
792 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
793 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
794 fbo_incomplete("width or height mismatch", -1);
797 /* check that all color buffers are the same format */
798 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
799 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
800 fbo_incomplete("format mismatch", -1);
804 if (att
->Renderbuffer
&&
805 att
->Renderbuffer
->NumSamples
!= numSamples
) {
806 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE
;
807 fbo_incomplete("inconsistant number of samples", i
);
812 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
814 if (att
->Type
== GL_RENDERBUFFER
&&
815 att
->Renderbuffer
->Format
== MESA_FORMAT_NONE
) {
816 fb
->_Status
= GL_FRAMEBUFFER_UNSUPPORTED
;
817 fbo_incomplete("unsupported renderbuffer format", i
);
823 if (_mesa_is_desktop_gl(ctx
) && !ctx
->Extensions
.ARB_ES2_compatibility
) {
824 /* Check that all DrawBuffers are present */
825 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
826 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
827 const struct gl_renderbuffer_attachment
*att
828 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
830 if (att
->Type
== GL_NONE
) {
831 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
832 fbo_incomplete("missing drawbuffer", j
);
838 /* Check that the ReadBuffer is present */
839 if (fb
->ColorReadBuffer
!= GL_NONE
) {
840 const struct gl_renderbuffer_attachment
*att
841 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
843 if (att
->Type
== GL_NONE
) {
844 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
845 fbo_incomplete("missing readbuffer", -1);
854 if (numImages
== 0) {
855 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
856 fbo_incomplete("no attachments", -1);
860 /* Provisionally set status = COMPLETE ... */
861 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
863 /* ... but the driver may say the FB is incomplete.
864 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
867 if (ctx
->Driver
.ValidateFramebuffer
) {
868 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
869 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
870 fbo_incomplete("driver marked FBO as incomplete", -1);
874 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
876 * Note that if ARB_framebuffer_object is supported and the attached
877 * renderbuffers/textures are different sizes, the framebuffer
878 * width/height will be set to the smallest width/height.
880 fb
->Width
= minWidth
;
881 fb
->Height
= minHeight
;
883 /* finally, update the visual info for the framebuffer */
884 _mesa_update_framebuffer_visual(ctx
, fb
);
890 _mesa_IsRenderbufferEXT(GLuint renderbuffer
)
892 GET_CURRENT_CONTEXT(ctx
);
893 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
895 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
896 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
904 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
906 struct gl_renderbuffer
*newRb
;
907 GET_CURRENT_CONTEXT(ctx
);
909 ASSERT_OUTSIDE_BEGIN_END(ctx
);
911 if (target
!= GL_RENDERBUFFER_EXT
) {
912 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindRenderbufferEXT(target)");
916 /* No need to flush here since the render buffer binding has no
917 * effect on rendering state.
921 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
922 if (newRb
== &DummyRenderbuffer
) {
923 /* ID was reserved, but no real renderbuffer object made yet */
926 else if (!newRb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
927 /* All RB IDs must be Gen'd */
928 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
933 /* create new renderbuffer object */
934 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
936 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
939 ASSERT(newRb
->AllocStorage
);
940 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
941 newRb
->RefCount
= 1; /* referenced by hash table */
948 ASSERT(newRb
!= &DummyRenderbuffer
);
950 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
955 * If the given renderbuffer is anywhere attached to the framebuffer, detach
957 * This is used when a renderbuffer object is deleted.
958 * The spec calls for unbinding.
961 detach_renderbuffer(struct gl_context
*ctx
,
962 struct gl_framebuffer
*fb
,
963 struct gl_renderbuffer
*rb
)
966 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
967 if (fb
->Attachment
[i
].Renderbuffer
== rb
) {
968 _mesa_remove_attachment(ctx
, &fb
->Attachment
[i
]);
971 invalidate_framebuffer(fb
);
976 _mesa_DeleteRenderbuffersEXT(GLsizei n
, const GLuint
*renderbuffers
)
979 GET_CURRENT_CONTEXT(ctx
);
981 ASSERT_OUTSIDE_BEGIN_END(ctx
);
982 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
984 for (i
= 0; i
< n
; i
++) {
985 if (renderbuffers
[i
] > 0) {
986 struct gl_renderbuffer
*rb
;
987 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
989 /* check if deleting currently bound renderbuffer object */
990 if (rb
== ctx
->CurrentRenderbuffer
) {
992 ASSERT(rb
->RefCount
>= 2);
993 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT
, 0);
996 if (_mesa_is_user_fbo(ctx
->DrawBuffer
)) {
997 detach_renderbuffer(ctx
, ctx
->DrawBuffer
, rb
);
999 if (_mesa_is_user_fbo(ctx
->ReadBuffer
)
1000 && ctx
->ReadBuffer
!= ctx
->DrawBuffer
) {
1001 detach_renderbuffer(ctx
, ctx
->ReadBuffer
, rb
);
1004 /* Remove from hash table immediately, to free the ID.
1005 * But the object will not be freed until it's no longer
1006 * referenced anywhere else.
1008 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
1010 if (rb
!= &DummyRenderbuffer
) {
1011 /* no longer referenced by hash table */
1012 _mesa_reference_renderbuffer(&rb
, NULL
);
1021 _mesa_GenRenderbuffersEXT(GLsizei n
, GLuint
*renderbuffers
)
1023 GET_CURRENT_CONTEXT(ctx
);
1027 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1030 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
1037 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
1039 for (i
= 0; i
< n
; i
++) {
1040 GLuint name
= first
+ i
;
1041 renderbuffers
[i
] = name
;
1042 /* insert dummy placeholder into hash table */
1043 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1044 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
1045 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1051 * Given an internal format token for a render buffer, return the
1052 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1053 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1054 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1056 * This is similar to _mesa_base_tex_format() but the set of valid
1057 * internal formats is different.
1059 * Note that even if a format is determined to be legal here, validation
1060 * of the FBO may fail if the format is not supported by the driver/GPU.
1062 * \param internalFormat as passed to glRenderbufferStorage()
1063 * \return the base internal format, or 0 if internalFormat is illegal
1066 _mesa_base_fbo_format(struct gl_context
*ctx
, GLenum internalFormat
)
1069 * Notes: some formats such as alpha, luminance, etc. were added
1070 * with GL_ARB_framebuffer_object.
1072 switch (internalFormat
) {
1078 return ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_framebuffer_object
1083 case GL_LUMINANCE12
:
1084 case GL_LUMINANCE16
:
1085 return ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_framebuffer_object
1087 case GL_LUMINANCE_ALPHA
:
1088 case GL_LUMINANCE4_ALPHA4
:
1089 case GL_LUMINANCE6_ALPHA2
:
1090 case GL_LUMINANCE8_ALPHA8
:
1091 case GL_LUMINANCE12_ALPHA4
:
1092 case GL_LUMINANCE12_ALPHA12
:
1093 case GL_LUMINANCE16_ALPHA16
:
1094 return ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_framebuffer_object
1095 ? GL_LUMINANCE_ALPHA
: 0;
1099 case GL_INTENSITY12
:
1100 case GL_INTENSITY16
:
1101 return ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_framebuffer_object
1112 return _mesa_is_desktop_gl(ctx
) ? GL_RGB
: 0;
1114 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGB
: 0;
1123 return _mesa_is_desktop_gl(ctx
) ? GL_RGBA
: 0;
1125 case GL_SRGB8_ALPHA8_EXT
:
1126 return _mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1127 case GL_STENCIL_INDEX
:
1128 case GL_STENCIL_INDEX1_EXT
:
1129 case GL_STENCIL_INDEX4_EXT
:
1130 case GL_STENCIL_INDEX16_EXT
:
1131 /* There are extensions for GL_STENCIL_INDEX1 and GL_STENCIL_INDEX4 in
1132 * OpenGL ES, but Mesa does not currently support them.
1134 return _mesa_is_desktop_gl(ctx
) ? GL_STENCIL_INDEX
: 0;
1135 case GL_STENCIL_INDEX8_EXT
:
1136 return GL_STENCIL_INDEX
;
1137 case GL_DEPTH_COMPONENT
:
1138 case GL_DEPTH_COMPONENT32
:
1139 return _mesa_is_desktop_gl(ctx
) ? GL_DEPTH_COMPONENT
: 0;
1140 case GL_DEPTH_COMPONENT16
:
1141 case GL_DEPTH_COMPONENT24
:
1142 return GL_DEPTH_COMPONENT
;
1143 case GL_DEPTH_STENCIL_EXT
:
1144 return _mesa_is_desktop_gl(ctx
)
1145 && ctx
->Extensions
.EXT_packed_depth_stencil
1146 ? GL_DEPTH_STENCIL_EXT
: 0;
1147 case GL_DEPTH24_STENCIL8_EXT
:
1148 return ctx
->Extensions
.EXT_packed_depth_stencil
1149 ? GL_DEPTH_STENCIL_EXT
: 0;
1150 case GL_DEPTH_COMPONENT32F
:
1151 return ctx
->Version
>= 30
1152 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1153 ? GL_DEPTH_COMPONENT
: 0;
1154 case GL_DEPTH32F_STENCIL8
:
1155 return ctx
->Version
>= 30
1156 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.ARB_depth_buffer_float
)
1157 ? GL_DEPTH_STENCIL
: 0;
1160 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1163 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1167 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_rg
1170 return ctx
->API
!= API_OPENGLES
&& ctx
->Extensions
.ARB_texture_rg
1172 /* signed normalized texture formats */
1174 return ctx
->Version
>= 30
1175 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.EXT_texture_snorm
)
1179 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1182 return ctx
->Version
>= 30
1183 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.EXT_texture_snorm
)
1187 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1190 return ctx
->Version
>= 30
1191 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.EXT_texture_snorm
)
1194 case GL_RGB16_SNORM
:
1195 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1197 case GL_RGBA8_SNORM
:
1198 return ctx
->Version
>= 30
1199 || (ctx
->API
== API_OPENGL
&& ctx
->Extensions
.EXT_texture_snorm
)
1202 case GL_RGBA16_SNORM
:
1203 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_texture_snorm
1205 case GL_ALPHA_SNORM
:
1206 case GL_ALPHA8_SNORM
:
1207 case GL_ALPHA16_SNORM
:
1208 return ctx
->API
== API_OPENGL
&&
1209 ctx
->Extensions
.EXT_texture_snorm
&&
1210 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1211 case GL_LUMINANCE_SNORM
:
1212 case GL_LUMINANCE8_SNORM
:
1213 case GL_LUMINANCE16_SNORM
:
1214 return ctx
->API
== API_OPENGL
&&
1215 ctx
->Extensions
.EXT_texture_snorm
&&
1216 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1217 case GL_LUMINANCE_ALPHA_SNORM
:
1218 case GL_LUMINANCE8_ALPHA8_SNORM
:
1219 case GL_LUMINANCE16_ALPHA16_SNORM
:
1220 return ctx
->API
== API_OPENGL
&&
1221 ctx
->Extensions
.EXT_texture_snorm
&&
1222 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1223 case GL_INTENSITY_SNORM
:
1224 case GL_INTENSITY8_SNORM
:
1225 case GL_INTENSITY16_SNORM
:
1226 return ctx
->API
== API_OPENGL
&&
1227 ctx
->Extensions
.EXT_texture_snorm
&&
1228 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1231 return ctx
->Version
>= 30
1232 || (ctx
->API
== API_OPENGL
&&
1233 ctx
->Extensions
.ARB_texture_rg
&&
1234 ctx
->Extensions
.ARB_texture_float
) ? GL_RED
: 0;
1237 return ctx
->Version
>= 30
1238 || (ctx
->API
== API_OPENGL
&&
1239 ctx
->Extensions
.ARB_texture_rg
&&
1240 ctx
->Extensions
.ARB_texture_float
) ? GL_RG
: 0;
1243 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1244 || _mesa_is_gles3(ctx
)
1248 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_texture_float
)
1249 || _mesa_is_gles3(ctx
)
1251 case GL_ALPHA16F_ARB
:
1252 case GL_ALPHA32F_ARB
:
1253 return ctx
->API
== API_OPENGL
&&
1254 ctx
->Extensions
.ARB_texture_float
&&
1255 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1256 case GL_LUMINANCE16F_ARB
:
1257 case GL_LUMINANCE32F_ARB
:
1258 return ctx
->API
== API_OPENGL
&&
1259 ctx
->Extensions
.ARB_texture_float
&&
1260 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1261 case GL_LUMINANCE_ALPHA16F_ARB
:
1262 case GL_LUMINANCE_ALPHA32F_ARB
:
1263 return ctx
->API
== API_OPENGL
&&
1264 ctx
->Extensions
.ARB_texture_float
&&
1265 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1266 case GL_INTENSITY16F_ARB
:
1267 case GL_INTENSITY32F_ARB
:
1268 return ctx
->API
== API_OPENGL
&&
1269 ctx
->Extensions
.ARB_texture_float
&&
1270 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1272 return (_mesa_is_desktop_gl(ctx
)
1273 && ctx
->Extensions
.EXT_texture_shared_exponent
)
1274 || _mesa_is_gles3(ctx
) ? GL_RGB
: 0;
1275 case GL_R11F_G11F_B10F
:
1276 return (_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.EXT_packed_float
)
1277 || _mesa_is_gles3(ctx
) ? GL_RGB
: 0;
1279 case GL_RGBA8UI_EXT
:
1280 case GL_RGBA16UI_EXT
:
1281 case GL_RGBA32UI_EXT
:
1283 case GL_RGBA16I_EXT
:
1284 case GL_RGBA32I_EXT
:
1285 return ctx
->Version
>= 30
1286 || (_mesa_is_desktop_gl(ctx
) &&
1287 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGBA
: 0;
1290 case GL_RGB16UI_EXT
:
1291 case GL_RGB32UI_EXT
:
1295 return ctx
->Version
>= 30
1296 || (_mesa_is_desktop_gl(ctx
) &&
1297 ctx
->Extensions
.EXT_texture_integer
) ? GL_RGB
: 0;
1305 return ctx
->Version
>= 30
1306 || (_mesa_is_desktop_gl(ctx
) &&
1307 ctx
->Extensions
.ARB_texture_rg
&&
1308 ctx
->Extensions
.EXT_texture_integer
) ? GL_RED
: 0;
1316 return ctx
->Version
>= 30
1317 || (_mesa_is_desktop_gl(ctx
) &&
1318 ctx
->Extensions
.ARB_texture_rg
&&
1319 ctx
->Extensions
.EXT_texture_integer
) ? GL_RG
: 0;
1321 case GL_INTENSITY8I_EXT
:
1322 case GL_INTENSITY8UI_EXT
:
1323 case GL_INTENSITY16I_EXT
:
1324 case GL_INTENSITY16UI_EXT
:
1325 case GL_INTENSITY32I_EXT
:
1326 case GL_INTENSITY32UI_EXT
:
1327 return ctx
->API
== API_OPENGL
&&
1328 ctx
->Extensions
.EXT_texture_integer
&&
1329 ctx
->Extensions
.ARB_framebuffer_object
? GL_INTENSITY
: 0;
1331 case GL_LUMINANCE8I_EXT
:
1332 case GL_LUMINANCE8UI_EXT
:
1333 case GL_LUMINANCE16I_EXT
:
1334 case GL_LUMINANCE16UI_EXT
:
1335 case GL_LUMINANCE32I_EXT
:
1336 case GL_LUMINANCE32UI_EXT
:
1337 return ctx
->API
== API_OPENGL
&&
1338 ctx
->Extensions
.EXT_texture_integer
&&
1339 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE
: 0;
1341 case GL_LUMINANCE_ALPHA8I_EXT
:
1342 case GL_LUMINANCE_ALPHA8UI_EXT
:
1343 case GL_LUMINANCE_ALPHA16I_EXT
:
1344 case GL_LUMINANCE_ALPHA16UI_EXT
:
1345 case GL_LUMINANCE_ALPHA32I_EXT
:
1346 case GL_LUMINANCE_ALPHA32UI_EXT
:
1347 return ctx
->API
== API_OPENGL
&&
1348 ctx
->Extensions
.EXT_texture_integer
&&
1349 ctx
->Extensions
.ARB_framebuffer_object
? GL_LUMINANCE_ALPHA
: 0;
1351 case GL_ALPHA8I_EXT
:
1352 case GL_ALPHA8UI_EXT
:
1353 case GL_ALPHA16I_EXT
:
1354 case GL_ALPHA16UI_EXT
:
1355 case GL_ALPHA32I_EXT
:
1356 case GL_ALPHA32UI_EXT
:
1357 return ctx
->API
== API_OPENGL
&&
1358 ctx
->Extensions
.EXT_texture_integer
&&
1359 ctx
->Extensions
.ARB_framebuffer_object
? GL_ALPHA
: 0;
1362 return (_mesa_is_desktop_gl(ctx
) &&
1363 ctx
->Extensions
.ARB_texture_rgb10_a2ui
)
1364 || _mesa_is_gles3(ctx
) ? GL_RGBA
: 0;
1367 return _mesa_is_gles(ctx
) || ctx
->Extensions
.ARB_ES2_compatibility
1376 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1379 invalidate_rb(GLuint key
, void *data
, void *userData
)
1381 struct gl_framebuffer
*fb
= (struct gl_framebuffer
*) data
;
1382 struct gl_renderbuffer
*rb
= (struct gl_renderbuffer
*) userData
;
1384 /* If this is a user-created FBO */
1385 if (_mesa_is_user_fbo(fb
)) {
1387 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1388 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1389 if (att
->Type
== GL_RENDERBUFFER
&&
1390 att
->Renderbuffer
== rb
) {
1391 /* Mark fb status as indeterminate to force re-validation */
1400 /** sentinal value, see below */
1401 #define NO_SAMPLES 1000
1405 * Helper function used by _mesa_RenderbufferStorageEXT() and
1406 * _mesa_RenderbufferStorageMultisample().
1407 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1410 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
1411 GLsizei width
, GLsizei height
, GLsizei samples
)
1413 const char *func
= samples
== NO_SAMPLES
?
1414 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1415 struct gl_renderbuffer
*rb
;
1417 GET_CURRENT_CONTEXT(ctx
);
1419 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1421 if (target
!= GL_RENDERBUFFER_EXT
) {
1422 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
1426 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
1427 if (baseFormat
== 0) {
1428 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat)", func
);
1432 if (width
< 0 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1433 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
1437 if (height
< 0 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
1438 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
1442 if (samples
== NO_SAMPLES
) {
1443 /* NumSamples == 0 indicates non-multisampling */
1446 else if (samples
> (GLsizei
) ctx
->Const
.MaxSamples
) {
1447 /* note: driver may choose to use more samples than what's requested */
1448 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(samples)", func
);
1452 rb
= ctx
->CurrentRenderbuffer
;
1454 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", func
);
1458 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1460 if (rb
->InternalFormat
== internalFormat
&&
1461 rb
->Width
== (GLuint
) width
&&
1462 rb
->Height
== (GLuint
) height
&&
1463 rb
->NumSamples
== samples
) {
1464 /* no change in allocation needed */
1468 /* These MUST get set by the AllocStorage func */
1469 rb
->Format
= MESA_FORMAT_NONE
;
1470 rb
->NumSamples
= samples
;
1472 /* Now allocate the storage */
1473 ASSERT(rb
->AllocStorage
);
1474 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
1475 /* No error - check/set fields now */
1476 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
1477 assert(rb
->Width
== (GLuint
) width
);
1478 assert(rb
->Height
== (GLuint
) height
);
1479 rb
->InternalFormat
= internalFormat
;
1480 rb
->_BaseFormat
= baseFormat
;
1481 assert(rb
->_BaseFormat
!= 0);
1484 /* Probably ran out of memory - clear the fields */
1487 rb
->Format
= MESA_FORMAT_NONE
;
1488 rb
->InternalFormat
= GL_NONE
;
1489 rb
->_BaseFormat
= GL_NONE
;
1493 /* Invalidate the framebuffers the renderbuffer is attached in. */
1494 if (rb
->AttachedAnytime
) {
1495 _mesa_HashWalk(ctx
->Shared
->FrameBuffers
, invalidate_rb
, rb
);
1500 #if FEATURE_OES_EGL_image
1502 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target
, GLeglImageOES image
)
1504 struct gl_renderbuffer
*rb
;
1505 GET_CURRENT_CONTEXT(ctx
);
1506 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1508 if (!ctx
->Extensions
.OES_EGL_image
) {
1509 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1510 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1514 if (target
!= GL_RENDERBUFFER
) {
1515 _mesa_error(ctx
, GL_INVALID_ENUM
,
1516 "EGLImageTargetRenderbufferStorageOES");
1520 rb
= ctx
->CurrentRenderbuffer
;
1522 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1523 "EGLImageTargetRenderbufferStorageOES");
1527 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1529 ctx
->Driver
.EGLImageTargetRenderbufferStorage(ctx
, rb
, image
);
1535 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1536 * _mesa_GetFramebufferAttachmentParameterivEXT()
1537 * We have to be careful to respect the base format. For example, if a
1538 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1539 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1540 * we need to return zero.
1543 get_component_bits(GLenum pname
, GLenum baseFormat
, gl_format format
)
1545 if (_mesa_base_format_has_channel(baseFormat
, pname
))
1546 return _mesa_get_format_bits(format
, pname
);
1554 _mesa_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1555 GLsizei width
, GLsizei height
)
1557 /* GL_ARB_fbo says calling this function is equivalent to calling
1558 * glRenderbufferStorageMultisample() with samples=0. We pass in
1559 * a token value here just for error reporting purposes.
1561 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
1566 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
1567 GLenum internalFormat
,
1568 GLsizei width
, GLsizei height
)
1570 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
1575 * OpenGL ES version of glRenderBufferStorage.
1578 _es_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
1579 GLsizei width
, GLsizei height
)
1581 switch (internalFormat
) {
1583 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1584 /* choose a closest format */
1585 internalFormat
= GL_RGB5
;
1591 renderbuffer_storage(target
, internalFormat
, width
, height
, 0);
1596 _mesa_GetRenderbufferParameterivEXT(GLenum target
, GLenum pname
, GLint
*params
)
1598 struct gl_renderbuffer
*rb
;
1599 GET_CURRENT_CONTEXT(ctx
);
1601 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1603 if (target
!= GL_RENDERBUFFER_EXT
) {
1604 _mesa_error(ctx
, GL_INVALID_ENUM
,
1605 "glGetRenderbufferParameterivEXT(target)");
1609 rb
= ctx
->CurrentRenderbuffer
;
1611 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1612 "glGetRenderbufferParameterivEXT");
1616 /* No need to flush here since we're just quering state which is
1617 * not effected by rendering.
1621 case GL_RENDERBUFFER_WIDTH_EXT
:
1622 *params
= rb
->Width
;
1624 case GL_RENDERBUFFER_HEIGHT_EXT
:
1625 *params
= rb
->Height
;
1627 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
1628 *params
= rb
->InternalFormat
;
1630 case GL_RENDERBUFFER_RED_SIZE_EXT
:
1631 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
1632 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
1633 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
1634 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
1635 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
1636 *params
= get_component_bits(pname
, rb
->_BaseFormat
, rb
->Format
);
1638 case GL_RENDERBUFFER_SAMPLES
:
1639 if ((_mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_framebuffer_object
)
1640 || _mesa_is_gles3(ctx
)) {
1641 *params
= rb
->NumSamples
;
1646 _mesa_error(ctx
, GL_INVALID_ENUM
,
1647 "glGetRenderbufferParameterivEXT(target)");
1653 GLboolean GLAPIENTRY
1654 _mesa_IsFramebufferEXT(GLuint framebuffer
)
1656 GET_CURRENT_CONTEXT(ctx
);
1657 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1659 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1660 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1668 * Check if any of the attachments of the given framebuffer are textures
1669 * (render to texture). Call ctx->Driver.RenderTexture() for such
1673 check_begin_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1676 ASSERT(ctx
->Driver
.RenderTexture
);
1678 if (_mesa_is_winsys_fbo(fb
))
1679 return; /* can't render to texture with winsys framebuffers */
1681 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1682 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1683 if (att
->Texture
&& _mesa_get_attachment_teximage(att
)) {
1684 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1691 * Examine all the framebuffer's attachments to see if any are textures.
1692 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1693 * notify the device driver that the texture image may have changed.
1696 check_end_texture_render(struct gl_context
*ctx
, struct gl_framebuffer
*fb
)
1698 if (_mesa_is_winsys_fbo(fb
))
1699 return; /* can't render to texture with winsys framebuffers */
1701 if (ctx
->Driver
.FinishRenderTexture
) {
1703 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1704 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1705 if (att
->Texture
&& att
->Renderbuffer
) {
1706 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1714 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
1716 struct gl_framebuffer
*newDrawFb
, *newReadFb
;
1717 struct gl_framebuffer
*oldDrawFb
, *oldReadFb
;
1718 GLboolean bindReadBuf
, bindDrawBuf
;
1719 GET_CURRENT_CONTEXT(ctx
);
1722 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1723 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1724 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1728 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1730 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1731 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1732 "glBindFramebufferEXT(unsupported)");
1737 #if FEATURE_EXT_framebuffer_blit
1738 case GL_DRAW_FRAMEBUFFER_EXT
:
1739 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1740 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1743 bindDrawBuf
= GL_TRUE
;
1744 bindReadBuf
= GL_FALSE
;
1746 case GL_READ_FRAMEBUFFER_EXT
:
1747 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1748 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1751 bindDrawBuf
= GL_FALSE
;
1752 bindReadBuf
= GL_TRUE
;
1755 case GL_FRAMEBUFFER_EXT
:
1756 bindDrawBuf
= GL_TRUE
;
1757 bindReadBuf
= GL_TRUE
;
1760 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1765 /* Binding a user-created framebuffer object */
1766 newDrawFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1767 if (newDrawFb
== &DummyFramebuffer
) {
1768 /* ID was reserved, but no real framebuffer object made yet */
1771 else if (!newDrawFb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
1772 /* All FBO IDs must be Gen'd */
1773 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1778 /* create new framebuffer object */
1779 newDrawFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1781 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1784 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newDrawFb
);
1786 newReadFb
= newDrawFb
;
1789 /* Binding the window system framebuffer (which was originally set
1790 * with MakeCurrent).
1792 newDrawFb
= ctx
->WinSysDrawBuffer
;
1793 newReadFb
= ctx
->WinSysReadBuffer
;
1797 ASSERT(newDrawFb
!= &DummyFramebuffer
);
1799 /* save pointers to current/old framebuffers */
1800 oldDrawFb
= ctx
->DrawBuffer
;
1801 oldReadFb
= ctx
->ReadBuffer
;
1803 /* check if really changing bindings */
1804 if (oldDrawFb
== newDrawFb
)
1805 bindDrawBuf
= GL_FALSE
;
1806 if (oldReadFb
== newReadFb
)
1807 bindReadBuf
= GL_FALSE
;
1810 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1812 * We also check if we're beginning and/or ending render-to-texture.
1813 * When a framebuffer with texture attachments is unbound, call
1814 * ctx->Driver.FinishRenderTexture().
1815 * When a framebuffer with texture attachments is bound, call
1816 * ctx->Driver.RenderTexture().
1818 * Note that if the ReadBuffer has texture attachments we don't consider
1819 * that a render-to-texture case.
1822 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1824 /* check if old readbuffer was render-to-texture */
1825 check_end_texture_render(ctx
, oldReadFb
);
1827 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newReadFb
);
1831 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1833 /* check if old framebuffer had any texture attachments */
1835 check_end_texture_render(ctx
, oldDrawFb
);
1837 /* check if newly bound framebuffer has any texture attachments */
1838 check_begin_texture_render(ctx
, newDrawFb
);
1840 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newDrawFb
);
1843 if ((bindDrawBuf
|| bindReadBuf
) && ctx
->Driver
.BindFramebuffer
) {
1844 ctx
->Driver
.BindFramebuffer(ctx
, target
, newDrawFb
, newReadFb
);
1850 _mesa_DeleteFramebuffersEXT(GLsizei n
, const GLuint
*framebuffers
)
1853 GET_CURRENT_CONTEXT(ctx
);
1855 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1856 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1858 for (i
= 0; i
< n
; i
++) {
1859 if (framebuffers
[i
] > 0) {
1860 struct gl_framebuffer
*fb
;
1861 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1863 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1865 /* check if deleting currently bound framebuffer object */
1866 if (ctx
->Extensions
.EXT_framebuffer_blit
) {
1867 /* separate draw/read binding points */
1868 if (fb
== ctx
->DrawBuffer
) {
1870 ASSERT(fb
->RefCount
>= 2);
1871 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT
, 0);
1873 if (fb
== ctx
->ReadBuffer
) {
1875 ASSERT(fb
->RefCount
>= 2);
1876 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT
, 0);
1880 /* only one binding point for read/draw buffers */
1881 if (fb
== ctx
->DrawBuffer
|| fb
== ctx
->ReadBuffer
) {
1883 ASSERT(fb
->RefCount
>= 2);
1884 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT
, 0);
1888 /* remove from hash table immediately, to free the ID */
1889 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1891 if (fb
!= &DummyFramebuffer
) {
1892 /* But the object will not be freed until it's no longer
1893 * bound in any context.
1895 _mesa_reference_framebuffer(&fb
, NULL
);
1904 _mesa_GenFramebuffersEXT(GLsizei n
, GLuint
*framebuffers
)
1906 GET_CURRENT_CONTEXT(ctx
);
1910 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1913 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
1920 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
1922 for (i
= 0; i
< n
; i
++) {
1923 GLuint name
= first
+ i
;
1924 framebuffers
[i
] = name
;
1925 /* insert dummy placeholder into hash table */
1926 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1927 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
1928 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1935 _mesa_CheckFramebufferStatusEXT(GLenum target
)
1937 struct gl_framebuffer
*buffer
;
1938 GET_CURRENT_CONTEXT(ctx
);
1940 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1942 buffer
= get_framebuffer_target(ctx
, target
);
1944 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1948 if (_mesa_is_winsys_fbo(buffer
)) {
1949 /* The window system / default framebuffer is always complete */
1950 return GL_FRAMEBUFFER_COMPLETE_EXT
;
1953 /* No need to flush here */
1955 if (buffer
->_Status
!= GL_FRAMEBUFFER_COMPLETE
) {
1956 _mesa_test_framebuffer_completeness(ctx
, buffer
);
1959 return buffer
->_Status
;
1964 * Replicate the src attachment point. Used by framebuffer_texture() when
1965 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1966 * GL_STENCIL_ATTACHMENT.
1969 reuse_framebuffer_texture_attachment(struct gl_framebuffer
*fb
,
1970 gl_buffer_index dst
,
1971 gl_buffer_index src
)
1973 struct gl_renderbuffer_attachment
*dst_att
= &fb
->Attachment
[dst
];
1974 struct gl_renderbuffer_attachment
*src_att
= &fb
->Attachment
[src
];
1976 assert(src_att
->Texture
!= NULL
);
1977 assert(src_att
->Renderbuffer
!= NULL
);
1979 _mesa_reference_texobj(&dst_att
->Texture
, src_att
->Texture
);
1980 _mesa_reference_renderbuffer(&dst_att
->Renderbuffer
, src_att
->Renderbuffer
);
1981 dst_att
->Type
= src_att
->Type
;
1982 dst_att
->Complete
= src_att
->Complete
;
1983 dst_att
->TextureLevel
= src_att
->TextureLevel
;
1984 dst_att
->Zoffset
= src_att
->Zoffset
;
1989 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
1990 * glFramebufferTextureLayerEXT().
1991 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
1992 * get textarget=0 in that case.
1995 framebuffer_texture(struct gl_context
*ctx
, const char *caller
, GLenum target
,
1996 GLenum attachment
, GLenum textarget
, GLuint texture
,
1997 GLint level
, GLint zoffset
)
1999 struct gl_renderbuffer_attachment
*att
;
2000 struct gl_texture_object
*texObj
= NULL
;
2001 struct gl_framebuffer
*fb
;
2002 GLenum maxLevelsTarget
;
2004 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2006 fb
= get_framebuffer_target(ctx
, target
);
2008 _mesa_error(ctx
, GL_INVALID_ENUM
,
2009 "glFramebufferTexture%sEXT(target=0x%x)", caller
, target
);
2013 /* check framebuffer binding */
2014 if (_mesa_is_winsys_fbo(fb
)) {
2015 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2016 "glFramebufferTexture%sEXT", caller
);
2020 /* The textarget, level, and zoffset parameters are only validated if
2021 * texture is non-zero.
2024 GLboolean err
= GL_TRUE
;
2026 texObj
= _mesa_lookup_texture(ctx
, texture
);
2027 if (texObj
!= NULL
) {
2028 if (textarget
== 0) {
2029 /* If textarget == 0 it means we're being called by
2030 * glFramebufferTextureLayer() and textarget is not used.
2031 * The only legal texture types for that function are 3D and
2032 * 1D/2D arrays textures.
2034 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
2035 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
2036 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
);
2039 /* Make sure textarget is consistent with the texture's type */
2040 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
2041 ? !_mesa_is_cube_face(textarget
)
2042 : (texObj
->Target
!= textarget
);
2046 /* can't render to a non-existant texture */
2047 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2048 "glFramebufferTexture%sEXT(non existant texture)",
2054 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2055 "glFramebufferTexture%sEXT(texture target mismatch)",
2060 if (texObj
->Target
== GL_TEXTURE_3D
) {
2061 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
2062 if (zoffset
< 0 || zoffset
>= maxSize
) {
2063 _mesa_error(ctx
, GL_INVALID_VALUE
,
2064 "glFramebufferTexture%sEXT(zoffset)", caller
);
2068 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
2069 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
)) {
2070 if (zoffset
< 0 || zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
2071 _mesa_error(ctx
, GL_INVALID_VALUE
,
2072 "glFramebufferTexture%sEXT(layer)", caller
);
2077 maxLevelsTarget
= textarget
? textarget
: texObj
->Target
;
2079 (level
>= _mesa_max_texture_levels(ctx
, maxLevelsTarget
))) {
2080 _mesa_error(ctx
, GL_INVALID_VALUE
,
2081 "glFramebufferTexture%sEXT(level)", caller
);
2086 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2088 _mesa_error(ctx
, GL_INVALID_ENUM
,
2089 "glFramebufferTexture%sEXT(attachment)", caller
);
2093 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2095 _glthread_LOCK_MUTEX(fb
->Mutex
);
2097 if (attachment
== GL_DEPTH_ATTACHMENT
&&
2098 texObj
== fb
->Attachment
[BUFFER_STENCIL
].Texture
&&
2099 level
== fb
->Attachment
[BUFFER_STENCIL
].TextureLevel
&&
2100 _mesa_tex_target_to_face(textarget
) ==
2101 fb
->Attachment
[BUFFER_STENCIL
].CubeMapFace
&&
2102 zoffset
== fb
->Attachment
[BUFFER_STENCIL
].Zoffset
) {
2103 /* The texture object is already attached to the stencil attachment
2104 * point. Don't create a new renderbuffer; just reuse the stencil
2105 * attachment's. This is required to prevent a GL error in
2106 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2108 reuse_framebuffer_texture_attachment(fb
, BUFFER_DEPTH
,
2110 } else if (attachment
== GL_STENCIL_ATTACHMENT
&&
2111 texObj
== fb
->Attachment
[BUFFER_DEPTH
].Texture
&&
2112 level
== fb
->Attachment
[BUFFER_DEPTH
].TextureLevel
&&
2113 _mesa_tex_target_to_face(textarget
) ==
2114 fb
->Attachment
[BUFFER_DEPTH
].CubeMapFace
&&
2115 zoffset
== fb
->Attachment
[BUFFER_DEPTH
].Zoffset
) {
2116 /* As above, but with depth and stencil transposed. */
2117 reuse_framebuffer_texture_attachment(fb
, BUFFER_STENCIL
,
2120 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
2122 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2123 /* Above we created a new renderbuffer and attached it to the
2124 * depth attachment point. Now attach it to the stencil attachment
2127 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2128 reuse_framebuffer_texture_attachment(fb
,BUFFER_STENCIL
,
2133 /* Set the render-to-texture flag. We'll check this flag in
2134 * glTexImage() and friends to determine if we need to revalidate
2135 * any FBOs that might be rendering into this texture.
2136 * This flag never gets cleared since it's non-trivial to determine
2137 * when all FBOs might be done rendering to this texture. That's OK
2138 * though since it's uncommon to render to a texture then repeatedly
2139 * call glTexImage() to change images in the texture.
2141 texObj
->_RenderToTexture
= GL_TRUE
;
2144 _mesa_remove_attachment(ctx
, att
);
2145 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2146 assert(att
== &fb
->Attachment
[BUFFER_DEPTH
]);
2147 _mesa_remove_attachment(ctx
, &fb
->Attachment
[BUFFER_STENCIL
]);
2151 invalidate_framebuffer(fb
);
2153 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
2159 _mesa_FramebufferTexture1DEXT(GLenum target
, GLenum attachment
,
2160 GLenum textarget
, GLuint texture
, GLint level
)
2162 GET_CURRENT_CONTEXT(ctx
);
2167 switch (textarget
) {
2171 case GL_TEXTURE_1D_ARRAY
:
2172 error
= !ctx
->Extensions
.EXT_texture_array
;
2179 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2180 "glFramebufferTexture1DEXT(textarget=%s)",
2181 _mesa_lookup_enum_by_nr(textarget
));
2186 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
2192 _mesa_FramebufferTexture2DEXT(GLenum target
, GLenum attachment
,
2193 GLenum textarget
, GLuint texture
, GLint level
)
2195 GET_CURRENT_CONTEXT(ctx
);
2200 switch (textarget
) {
2204 case GL_TEXTURE_RECTANGLE
:
2205 error
= _mesa_is_gles(ctx
)
2206 || !ctx
->Extensions
.NV_texture_rectangle
;
2208 case GL_TEXTURE_CUBE_MAP_POSITIVE_X
:
2209 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X
:
2210 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y
:
2211 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y
:
2212 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z
:
2213 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z
:
2214 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2216 case GL_TEXTURE_2D_ARRAY
:
2217 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2218 || !ctx
->Extensions
.EXT_texture_array
;
2225 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2226 "glFramebufferTexture2DEXT(textarget=%s)",
2227 _mesa_lookup_enum_by_nr(textarget
));
2232 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
2238 _mesa_FramebufferTexture3DEXT(GLenum target
, GLenum attachment
,
2239 GLenum textarget
, GLuint texture
,
2240 GLint level
, GLint zoffset
)
2242 GET_CURRENT_CONTEXT(ctx
);
2244 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
2245 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2246 "glFramebufferTexture3DEXT(textarget)");
2250 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
2256 _mesa_FramebufferTextureLayerEXT(GLenum target
, GLenum attachment
,
2257 GLuint texture
, GLint level
, GLint layer
)
2259 GET_CURRENT_CONTEXT(ctx
);
2261 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
2267 _mesa_FramebufferRenderbufferEXT(GLenum target
, GLenum attachment
,
2268 GLenum renderbufferTarget
,
2269 GLuint renderbuffer
)
2271 struct gl_renderbuffer_attachment
*att
;
2272 struct gl_framebuffer
*fb
;
2273 struct gl_renderbuffer
*rb
;
2274 GET_CURRENT_CONTEXT(ctx
);
2276 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2278 fb
= get_framebuffer_target(ctx
, target
);
2280 _mesa_error(ctx
, GL_INVALID_ENUM
, "glFramebufferRenderbufferEXT(target)");
2284 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
2285 _mesa_error(ctx
, GL_INVALID_ENUM
,
2286 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2290 if (_mesa_is_winsys_fbo(fb
)) {
2291 /* Can't attach new renderbuffers to a window system framebuffer */
2292 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
2296 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
2298 _mesa_error(ctx
, GL_INVALID_ENUM
,
2299 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2300 _mesa_lookup_enum_by_nr(attachment
));
2305 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
2307 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2308 "glFramebufferRenderbufferEXT(non-existant"
2309 " renderbuffer %u)", renderbuffer
);
2312 else if (rb
== &DummyRenderbuffer
) {
2313 /* This is what NVIDIA does */
2314 _mesa_error(ctx
, GL_INVALID_VALUE
,
2315 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2321 /* remove renderbuffer attachment */
2325 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
&&
2326 rb
&& rb
->Format
!= MESA_FORMAT_NONE
) {
2327 /* make sure the renderbuffer is a depth/stencil format */
2328 const GLenum baseFormat
= _mesa_get_format_base_format(rb
->Format
);
2329 if (baseFormat
!= GL_DEPTH_STENCIL
) {
2330 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2331 "glFramebufferRenderbufferEXT(renderbuffer"
2332 " is not DEPTH_STENCIL format)");
2338 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2340 assert(ctx
->Driver
.FramebufferRenderbuffer
);
2341 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
2343 /* Some subsequent GL commands may depend on the framebuffer's visual
2344 * after the binding is updated. Update visual info now.
2346 _mesa_update_framebuffer_visual(ctx
, fb
);
2351 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target
, GLenum attachment
,
2352 GLenum pname
, GLint
*params
)
2354 const struct gl_renderbuffer_attachment
*att
;
2355 struct gl_framebuffer
*buffer
;
2357 GET_CURRENT_CONTEXT(ctx
);
2359 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2361 /* The error differs in GL and GLES. */
2362 err
= _mesa_is_desktop_gl(ctx
) ? GL_INVALID_OPERATION
: GL_INVALID_ENUM
;
2364 buffer
= get_framebuffer_target(ctx
, target
);
2366 _mesa_error(ctx
, GL_INVALID_ENUM
,
2367 "glGetFramebufferAttachmentParameterivEXT(target)");
2371 if (_mesa_is_winsys_fbo(buffer
)) {
2372 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2375 * "If the framebuffer currently bound to target is zero, then
2376 * INVALID_OPERATION is generated."
2378 * The EXT_framebuffer_object spec has the same wording, and the
2379 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2382 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
) {
2383 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2384 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2387 /* the default / window-system FBO */
2388 att
= _mesa_get_fb0_attachment(ctx
, buffer
, attachment
);
2391 /* user-created framebuffer FBO */
2392 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
2396 _mesa_error(ctx
, GL_INVALID_ENUM
,
2397 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2401 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
2402 /* the depth and stencil attachments must point to the same buffer */
2403 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
2404 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
2405 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
2406 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
2407 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2408 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2409 " attachments differ)");
2414 /* No need to flush here */
2417 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
2418 *params
= _mesa_is_winsys_fbo(buffer
)
2419 ? GL_FRAMEBUFFER_DEFAULT
: att
->Type
;
2421 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
2422 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
2423 *params
= att
->Renderbuffer
->Name
;
2425 else if (att
->Type
== GL_TEXTURE
) {
2426 *params
= att
->Texture
->Name
;
2429 assert(att
->Type
== GL_NONE
);
2430 if (_mesa_is_desktop_gl(ctx
) || _mesa_is_gles3(ctx
)) {
2433 goto invalid_pname_enum
;
2437 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
2438 if (att
->Type
== GL_TEXTURE
) {
2439 *params
= att
->TextureLevel
;
2441 else if (att
->Type
== GL_NONE
) {
2442 _mesa_error(ctx
, err
,
2443 "glGetFramebufferAttachmentParameterivEXT(pname)");
2446 goto invalid_pname_enum
;
2449 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
2450 if (att
->Type
== GL_TEXTURE
) {
2451 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
2452 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
2458 else if (att
->Type
== GL_NONE
) {
2459 _mesa_error(ctx
, err
,
2460 "glGetFramebufferAttachmentParameterivEXT(pname)");
2463 goto invalid_pname_enum
;
2466 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
2467 if (ctx
->API
== API_OPENGLES
) {
2468 goto invalid_pname_enum
;
2469 } else if (att
->Type
== GL_NONE
) {
2470 _mesa_error(ctx
, err
,
2471 "glGetFramebufferAttachmentParameterivEXT(pname)");
2472 } else if (att
->Type
== GL_TEXTURE
) {
2473 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
2474 *params
= att
->Zoffset
;
2481 goto invalid_pname_enum
;
2484 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
2485 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2486 && !_mesa_is_gles3(ctx
)) {
2487 goto invalid_pname_enum
;
2489 else if (att
->Type
== GL_NONE
) {
2490 _mesa_error(ctx
, err
,
2491 "glGetFramebufferAttachmentParameterivEXT(pname)");
2494 if (ctx
->Extensions
.EXT_framebuffer_sRGB
) {
2495 *params
= _mesa_get_format_color_encoding(att
->Renderbuffer
->Format
);
2498 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2499 * if the sRGB conversion is unsupported. */
2500 *params
= GL_LINEAR
;
2504 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
2505 if ((ctx
->API
!= API_OPENGL
|| !ctx
->Extensions
.ARB_framebuffer_object
)
2506 && ctx
->API
!= API_OPENGL_CORE
2507 && !_mesa_is_gles3(ctx
)) {
2508 goto invalid_pname_enum
;
2510 else if (att
->Type
== GL_NONE
) {
2511 _mesa_error(ctx
, err
,
2512 "glGetFramebufferAttachmentParameterivEXT(pname)");
2515 gl_format format
= att
->Renderbuffer
->Format
;
2516 if (format
== MESA_FORMAT_S8
) {
2520 else if (format
== MESA_FORMAT_Z32_FLOAT_X24S8
) {
2521 /* depends on the attachment parameter */
2522 if (attachment
== GL_STENCIL_ATTACHMENT
) {
2530 *params
= _mesa_get_format_datatype(format
);
2534 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
2535 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
2536 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
2537 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
2538 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
2539 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
2540 if ((!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_framebuffer_object
)
2541 && !_mesa_is_gles3(ctx
)) {
2542 goto invalid_pname_enum
;
2544 else if (att
->Type
== GL_NONE
) {
2545 _mesa_error(ctx
, err
,
2546 "glGetFramebufferAttachmentParameterivEXT(pname)");
2548 else if (att
->Texture
) {
2549 const struct gl_texture_image
*texImage
=
2550 _mesa_select_tex_image(ctx
, att
->Texture
, att
->Texture
->Target
,
2553 *params
= get_component_bits(pname
, texImage
->_BaseFormat
,
2554 texImage
->TexFormat
);
2560 else if (att
->Renderbuffer
) {
2561 *params
= get_component_bits(pname
, att
->Renderbuffer
->_BaseFormat
,
2562 att
->Renderbuffer
->Format
);
2565 _mesa_problem(ctx
, "glGetFramebufferAttachmentParameterivEXT:"
2566 " invalid FBO attachment structure");
2570 goto invalid_pname_enum
;
2576 _mesa_error(ctx
, GL_INVALID_ENUM
,
2577 "glGetFramebufferAttachmentParameteriv(pname)");
2583 _mesa_GenerateMipmapEXT(GLenum target
)
2585 struct gl_texture_image
*srcImage
;
2586 struct gl_texture_object
*texObj
;
2589 GET_CURRENT_CONTEXT(ctx
);
2591 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2592 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2596 error
= _mesa_is_gles(ctx
);
2602 error
= ctx
->API
== API_OPENGLES
;
2604 case GL_TEXTURE_CUBE_MAP
:
2605 error
= !ctx
->Extensions
.ARB_texture_cube_map
;
2607 case GL_TEXTURE_1D_ARRAY
:
2608 error
= _mesa_is_gles(ctx
) || !ctx
->Extensions
.EXT_texture_array
;
2610 case GL_TEXTURE_2D_ARRAY
:
2611 error
= (_mesa_is_gles(ctx
) && ctx
->Version
< 30)
2612 || !ctx
->Extensions
.EXT_texture_array
;
2619 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target=%s)",
2620 _mesa_lookup_enum_by_nr(target
));
2624 texObj
= _mesa_get_current_tex_object(ctx
, target
);
2626 if (texObj
->BaseLevel
>= texObj
->MaxLevel
) {
2631 if (texObj
->Target
== GL_TEXTURE_CUBE_MAP
&&
2632 !_mesa_cube_complete(texObj
)) {
2633 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2634 "glGenerateMipmap(incomplete cube map)");
2638 _mesa_lock_texture(ctx
, texObj
);
2640 srcImage
= _mesa_select_tex_image(ctx
, texObj
, target
, texObj
->BaseLevel
);
2642 _mesa_unlock_texture(ctx
, texObj
);
2643 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2644 "glGenerateMipmap(zero size base image)");
2648 if (target
== GL_TEXTURE_CUBE_MAP
) {
2650 for (face
= 0; face
< 6; face
++)
2651 ctx
->Driver
.GenerateMipmap(ctx
,
2652 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
2656 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
2658 _mesa_unlock_texture(ctx
, texObj
);
2662 #if FEATURE_EXT_framebuffer_blit
2664 static const struct gl_renderbuffer_attachment
*
2665 find_attachment(const struct gl_framebuffer
*fb
,
2666 const struct gl_renderbuffer
*rb
)
2669 for (i
= 0; i
< Elements(fb
->Attachment
); i
++) {
2670 if (fb
->Attachment
[i
].Renderbuffer
== rb
)
2671 return &fb
->Attachment
[i
];
2678 * Helper function for checking if the datatypes of color buffers are
2679 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2681 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2682 * and any of the following conditions hold:
2683 * - The read buffer contains fixed-point or floating-point values and any
2684 * draw buffer contains neither fixed-point nor floating-point values.
2685 * - The read buffer contains unsigned integer values and any draw buffer
2686 * does not contain unsigned integer values.
2687 * - The read buffer contains signed integer values and any draw buffer
2688 * does not contain signed integer values."
2691 compatible_color_datatypes(gl_format srcFormat
, gl_format dstFormat
)
2693 GLenum srcType
= _mesa_get_format_datatype(srcFormat
);
2694 GLenum dstType
= _mesa_get_format_datatype(dstFormat
);
2696 if (srcType
!= GL_INT
&& srcType
!= GL_UNSIGNED_INT
) {
2697 assert(srcType
== GL_UNSIGNED_NORMALIZED
||
2698 srcType
== GL_SIGNED_NORMALIZED
||
2699 srcType
== GL_FLOAT
);
2700 /* Boil any of those types down to GL_FLOAT */
2704 if (dstType
!= GL_INT
&& dstType
!= GL_UNSIGNED_INT
) {
2705 assert(dstType
== GL_UNSIGNED_NORMALIZED
||
2706 dstType
== GL_SIGNED_NORMALIZED
||
2707 dstType
== GL_FLOAT
);
2708 /* Boil any of those types down to GL_FLOAT */
2712 return srcType
== dstType
;
2717 * Return the equivalent non-generic internal format.
2718 * This is useful for comparing whether two internal formats are semantically
2722 get_nongeneric_internalformat(GLenum format
)
2725 /* GL 1.1 formats. */
2735 case GL_LUMINANCE_ALPHA
:
2736 return GL_LUMINANCE8_ALPHA8
;
2740 return GL_LUMINANCE8
;
2746 return GL_INTENSITY8
;
2748 /* GL_ARB_texture_rg */
2755 /* GL_EXT_texture_sRGB */
2760 return GL_SRGB8_ALPHA8
;
2763 return GL_SLUMINANCE8
;
2765 case GL_SLUMINANCE_ALPHA
:
2766 return GL_SLUMINANCE8_ALPHA8
;
2768 /* GL_EXT_texture_snorm */
2770 return GL_RGBA8_SNORM
;
2773 return GL_RGB8_SNORM
;
2776 return GL_RG8_SNORM
;
2781 case GL_LUMINANCE_ALPHA_SNORM
:
2782 return GL_LUMINANCE8_ALPHA8_SNORM
;
2784 case GL_LUMINANCE_SNORM
:
2785 return GL_LUMINANCE8_SNORM
;
2787 case GL_ALPHA_SNORM
:
2788 return GL_ALPHA8_SNORM
;
2790 case GL_INTENSITY_SNORM
:
2791 return GL_INTENSITY8_SNORM
;
2800 compatible_resolve_formats(const struct gl_renderbuffer
*colorReadRb
,
2801 const struct gl_renderbuffer
*colorDrawRb
)
2803 /* The simple case where we know the backing formats are the same.
2805 if (colorReadRb
->Format
== colorDrawRb
->Format
) {
2809 /* The Mesa formats are different, so we must check whether the internal
2810 * formats are compatible.
2812 * Under some circumstances, the user may request e.g. two GL_RGBA8
2813 * textures and get two entirely different Mesa formats like RGBA8888 and
2814 * ARGB8888. Drivers behaving like that should be able to cope with
2815 * non-matching formats by themselves, because it's not the user's fault.
2817 if (get_nongeneric_internalformat(colorReadRb
->InternalFormat
) ==
2818 get_nongeneric_internalformat(colorDrawRb
->InternalFormat
)) {
2827 * Blit rectangular region, optionally from one framebuffer to another.
2829 * Note, if the src buffer is multisampled and the dest is not, this is
2830 * when the samples must be resolved to a single color.
2833 _mesa_BlitFramebufferEXT(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
2834 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
2835 GLbitfield mask
, GLenum filter
)
2837 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
2838 GL_DEPTH_BUFFER_BIT
|
2839 GL_STENCIL_BUFFER_BIT
);
2840 const struct gl_framebuffer
*readFb
, *drawFb
;
2841 const struct gl_renderbuffer
*colorReadRb
, *colorDrawRb
;
2842 GET_CURRENT_CONTEXT(ctx
);
2844 ASSERT_OUTSIDE_BEGIN_END(ctx
);
2845 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
2847 if (MESA_VERBOSE
& VERBOSE_API
)
2849 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2850 srcX0
, srcY0
, srcX1
, srcY1
,
2851 dstX0
, dstY0
, dstX1
, dstY1
,
2852 mask
, _mesa_lookup_enum_by_nr(filter
));
2854 if (ctx
->NewState
) {
2855 _mesa_update_state(ctx
);
2858 readFb
= ctx
->ReadBuffer
;
2859 drawFb
= ctx
->DrawBuffer
;
2861 if (!readFb
|| !drawFb
) {
2862 /* This will normally never happen but someday we may want to
2863 * support MakeCurrent() with no drawables.
2868 /* check for complete framebuffers */
2869 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
2870 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
2871 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
2872 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2876 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
2877 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
2881 if (mask
& ~legalMaskBits
) {
2882 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
2886 /* depth/stencil must be blitted with nearest filtering */
2887 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
2888 && filter
!= GL_NEAREST
) {
2889 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2890 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2894 /* get color read/draw renderbuffers */
2895 if (mask
& GL_COLOR_BUFFER_BIT
) {
2896 colorReadRb
= readFb
->_ColorReadBuffer
;
2897 colorDrawRb
= drawFb
->_ColorDrawBuffers
[0];
2899 /* From the EXT_framebuffer_object spec:
2901 * "If a buffer is specified in <mask> and does not exist in both
2902 * the read and draw framebuffers, the corresponding bit is silently
2905 if ((colorReadRb
== NULL
) || (colorDrawRb
== NULL
)) {
2906 colorReadRb
= colorDrawRb
= NULL
;
2907 mask
&= ~GL_COLOR_BUFFER_BIT
;
2909 else if (!compatible_color_datatypes(colorReadRb
->Format
,
2910 colorDrawRb
->Format
)) {
2911 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2912 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
2917 colorReadRb
= colorDrawRb
= NULL
;
2920 if (mask
& GL_STENCIL_BUFFER_BIT
) {
2921 struct gl_renderbuffer
*readRb
=
2922 readFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
2923 struct gl_renderbuffer
*drawRb
=
2924 drawFb
->Attachment
[BUFFER_STENCIL
].Renderbuffer
;
2926 /* From the EXT_framebuffer_object spec:
2928 * "If a buffer is specified in <mask> and does not exist in both
2929 * the read and draw framebuffers, the corresponding bit is silently
2932 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
2933 mask
&= ~GL_STENCIL_BUFFER_BIT
;
2935 else if (_mesa_get_format_bits(readRb
->Format
, GL_STENCIL_BITS
) !=
2936 _mesa_get_format_bits(drawRb
->Format
, GL_STENCIL_BITS
)) {
2937 /* There is no need to check the stencil datatype here, because
2938 * there is only one: GL_UNSIGNED_INT.
2940 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2941 "glBlitFramebufferEXT(stencil buffer size mismatch)");
2946 if (mask
& GL_DEPTH_BUFFER_BIT
) {
2947 struct gl_renderbuffer
*readRb
=
2948 readFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
2949 struct gl_renderbuffer
*drawRb
=
2950 drawFb
->Attachment
[BUFFER_DEPTH
].Renderbuffer
;
2952 /* From the EXT_framebuffer_object spec:
2954 * "If a buffer is specified in <mask> and does not exist in both
2955 * the read and draw framebuffers, the corresponding bit is silently
2958 if ((readRb
== NULL
) || (drawRb
== NULL
)) {
2959 mask
&= ~GL_DEPTH_BUFFER_BIT
;
2961 else if ((_mesa_get_format_bits(readRb
->Format
, GL_DEPTH_BITS
) !=
2962 _mesa_get_format_bits(drawRb
->Format
, GL_DEPTH_BITS
)) ||
2963 (_mesa_get_format_datatype(readRb
->Format
) !=
2964 _mesa_get_format_datatype(drawRb
->Format
))) {
2965 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2966 "glBlitFramebufferEXT(depth buffer format mismatch)");
2971 if (readFb
->Visual
.samples
> 0 &&
2972 drawFb
->Visual
.samples
> 0 &&
2973 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
2974 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2975 "glBlitFramebufferEXT(mismatched samples)");
2979 /* extra checks for multisample copies... */
2980 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
2981 /* src and dest region sizes must be the same */
2982 if (srcX1
- srcX0
!= dstX1
- dstX0
||
2983 srcY1
- srcY0
!= dstY1
- dstY0
) {
2984 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2985 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2989 /* color formats must match */
2992 !compatible_resolve_formats(colorReadRb
, colorDrawRb
)) {
2993 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2994 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2999 if (filter
== GL_LINEAR
&& (mask
& GL_COLOR_BUFFER_BIT
)) {
3000 /* 3.1 spec, page 199:
3001 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
3002 * if filter is LINEAR and read buffer contains integer data."
3004 GLenum type
= _mesa_get_format_datatype(colorReadRb
->Format
);
3005 if (type
== GL_INT
|| type
== GL_UNSIGNED_INT
) {
3006 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3007 "glBlitFramebufferEXT(integer color type)");
3012 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
3013 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
3019 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
3021 srcX0
, srcY0
, srcX1
, srcY1
,
3022 dstX0
, dstY0
, dstX1
, dstY1
,
3025 const struct gl_renderbuffer_attachment
*att
;
3027 att
= find_attachment(readFb
, colorReadRb
);
3028 printf(" Src FBO %u RB %u (%dx%d) ",
3029 readFb
->Name
, colorReadRb
->Name
,
3030 colorReadRb
->Width
, colorReadRb
->Height
);
3031 if (att
&& att
->Texture
) {
3032 printf("Tex %u tgt 0x%x level %u face %u",
3034 att
->Texture
->Target
,
3040 att
= find_attachment(drawFb
, colorDrawRb
);
3041 printf(" Dst FBO %u RB %u (%dx%d) ",
3042 drawFb
->Name
, colorDrawRb
->Name
,
3043 colorDrawRb
->Width
, colorDrawRb
->Height
);
3044 if (att
&& att
->Texture
) {
3045 printf("Tex %u tgt 0x%x level %u face %u",
3047 att
->Texture
->Target
,
3059 ASSERT(ctx
->Driver
.BlitFramebuffer
);
3060 ctx
->Driver
.BlitFramebuffer(ctx
,
3061 srcX0
, srcY0
, srcX1
, srcY1
,
3062 dstX0
, dstY0
, dstX1
, dstY1
,
3065 #endif /* FEATURE_EXT_framebuffer_blit */
3068 #if FEATURE_ARB_geometry_shader4
3070 _mesa_FramebufferTextureARB(GLenum target
, GLenum attachment
,
3071 GLuint texture
, GLint level
)
3073 GET_CURRENT_CONTEXT(ctx
);
3074 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3075 "glFramebufferTextureARB "
3076 "not implemented!");
3081 _mesa_FramebufferTextureFaceARB(GLenum target
, GLenum attachment
,
3082 GLuint texture
, GLint level
, GLenum face
)
3084 GET_CURRENT_CONTEXT(ctx
);
3085 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3086 "glFramebufferTextureFaceARB "
3087 "not implemented!");
3089 #endif /* FEATURE_ARB_geometry_shader4 */
3092 invalidate_framebuffer_storage(GLenum target
, GLsizei numAttachments
,
3093 const GLenum
*attachments
, GLint x
, GLint y
,
3094 GLsizei width
, GLsizei height
, const char *name
)
3097 struct gl_framebuffer
*fb
;
3098 GET_CURRENT_CONTEXT(ctx
);
3100 ASSERT_OUTSIDE_BEGIN_END(ctx
);
3102 fb
= get_framebuffer_target(ctx
, target
);
3104 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", name
);
3108 if (numAttachments
< 0) {
3109 _mesa_error(ctx
, GL_INVALID_VALUE
,
3110 "%s(numAttachments < 0)", name
);
3114 /* The GL_ARB_invalidate_subdata spec says:
3116 * "If an attachment is specified that does not exist in the
3117 * framebuffer bound to <target>, it is ignored."
3121 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3122 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3123 * INVALID_OPERATION is generated."
3125 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3126 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3127 * set of retrictions).
3129 for (i
= 0; i
< numAttachments
; i
++) {
3130 if (_mesa_is_winsys_fbo(fb
)) {
3131 switch (attachments
[i
]) {
3137 /* Accumulation buffers and auxilary buffers were removed in
3138 * OpenGL 3.1, and they never existed in OpenGL ES.
3140 if (ctx
->API
!= API_OPENGL
)
3150 case GL_FRONT_RIGHT
:
3151 if (!_mesa_is_desktop_gl(ctx
))
3158 switch (attachments
[i
]) {
3159 case GL_DEPTH_ATTACHMENT
:
3160 case GL_STENCIL_ATTACHMENT
:
3162 case GL_COLOR_ATTACHMENT0
:
3163 case GL_COLOR_ATTACHMENT1
:
3164 case GL_COLOR_ATTACHMENT2
:
3165 case GL_COLOR_ATTACHMENT3
:
3166 case GL_COLOR_ATTACHMENT4
:
3167 case GL_COLOR_ATTACHMENT5
:
3168 case GL_COLOR_ATTACHMENT6
:
3169 case GL_COLOR_ATTACHMENT7
:
3170 case GL_COLOR_ATTACHMENT8
:
3171 case GL_COLOR_ATTACHMENT9
:
3172 case GL_COLOR_ATTACHMENT10
:
3173 case GL_COLOR_ATTACHMENT11
:
3174 case GL_COLOR_ATTACHMENT12
:
3175 case GL_COLOR_ATTACHMENT13
:
3176 case GL_COLOR_ATTACHMENT14
:
3177 case GL_COLOR_ATTACHMENT15
: {
3178 const int k
= attachments
[i
] - GL_COLOR_ATTACHMENT0
;
3179 if (k
>= ctx
->Const
.MaxColorAttachments
) {
3180 _mesa_error(ctx
, GL_INVALID_OPERATION
,
3181 "%s(attachment >= max. color attachments)", name
);
3191 /* We don't actually do anything for this yet. Just return after
3192 * validating the parameters and generating the required errors.
3197 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(attachment)", name
);
3202 _mesa_InvalidateSubFramebuffer(GLenum target
, GLsizei numAttachments
,
3203 const GLenum
*attachments
, GLint x
, GLint y
,
3204 GLsizei width
, GLsizei height
)
3206 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3207 x
, y
, width
, height
,
3208 "glInvalidateSubFramebuffer");
3212 _mesa_InvalidateFramebuffer(GLenum target
, GLsizei numAttachments
,
3213 const GLenum
*attachments
)
3215 /* The GL_ARB_invalidate_subdata spec says:
3219 * void InvalidateFramebuffer(enum target,
3220 * sizei numAttachments,
3221 * const enum *attachments);
3223 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3224 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3225 * <MAX_VIEWPORT_DIMS[1]> respectively."
3227 invalidate_framebuffer_storage(target
, numAttachments
, attachments
,
3228 0, 0, MAX_VIEWPORT_WIDTH
, MAX_VIEWPORT_HEIGHT
,
3229 "glInvalidateFramebuffer");