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
38 #include "framebuffer.h"
42 #include "renderbuffer.h"
52 * None of the GL_EXT_framebuffer_object functions are compiled into
59 * When glGenRender/FramebuffersEXT() is called we insert pointers to
60 * these placeholder objects into the hash table.
61 * Later, when the object ID is first bound, we replace the placeholder
62 * with the real frame/renderbuffer.
64 static struct gl_framebuffer DummyFramebuffer
;
65 static struct gl_renderbuffer DummyRenderbuffer
;
68 #define IS_CUBE_FACE(TARGET) \
69 ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
70 (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
74 delete_dummy_renderbuffer(struct gl_renderbuffer
*rb
)
80 delete_dummy_framebuffer(struct gl_framebuffer
*fb
)
87 _mesa_init_fbobjects(GLcontext
*ctx
)
89 DummyFramebuffer
.Delete
= delete_dummy_framebuffer
;
90 DummyRenderbuffer
.Delete
= delete_dummy_renderbuffer
;
95 * Helper routine for getting a gl_renderbuffer.
97 struct gl_renderbuffer
*
98 _mesa_lookup_renderbuffer(GLcontext
*ctx
, GLuint id
)
100 struct gl_renderbuffer
*rb
;
105 rb
= (struct gl_renderbuffer
*)
106 _mesa_HashLookup(ctx
->Shared
->RenderBuffers
, id
);
112 * Helper routine for getting a gl_framebuffer.
114 struct gl_framebuffer
*
115 _mesa_lookup_framebuffer(GLcontext
*ctx
, GLuint id
)
117 struct gl_framebuffer
*fb
;
122 fb
= (struct gl_framebuffer
*)
123 _mesa_HashLookup(ctx
->Shared
->FrameBuffers
, id
);
129 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
130 * gl_renderbuffer_attachment object.
131 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
132 * the depth buffer attachment point.
134 struct gl_renderbuffer_attachment
*
135 _mesa_get_attachment(GLcontext
*ctx
, struct gl_framebuffer
*fb
,
140 switch (attachment
) {
141 case GL_COLOR_ATTACHMENT0_EXT
:
142 case GL_COLOR_ATTACHMENT1_EXT
:
143 case GL_COLOR_ATTACHMENT2_EXT
:
144 case GL_COLOR_ATTACHMENT3_EXT
:
145 case GL_COLOR_ATTACHMENT4_EXT
:
146 case GL_COLOR_ATTACHMENT5_EXT
:
147 case GL_COLOR_ATTACHMENT6_EXT
:
148 case GL_COLOR_ATTACHMENT7_EXT
:
149 case GL_COLOR_ATTACHMENT8_EXT
:
150 case GL_COLOR_ATTACHMENT9_EXT
:
151 case GL_COLOR_ATTACHMENT10_EXT
:
152 case GL_COLOR_ATTACHMENT11_EXT
:
153 case GL_COLOR_ATTACHMENT12_EXT
:
154 case GL_COLOR_ATTACHMENT13_EXT
:
155 case GL_COLOR_ATTACHMENT14_EXT
:
156 case GL_COLOR_ATTACHMENT15_EXT
:
157 i
= attachment
- GL_COLOR_ATTACHMENT0_EXT
;
158 if (i
>= ctx
->Const
.MaxColorAttachments
) {
161 return &fb
->Attachment
[BUFFER_COLOR0
+ i
];
162 case GL_DEPTH_STENCIL_ATTACHMENT
:
164 case GL_DEPTH_ATTACHMENT_EXT
:
165 return &fb
->Attachment
[BUFFER_DEPTH
];
166 case GL_STENCIL_ATTACHMENT_EXT
:
167 return &fb
->Attachment
[BUFFER_STENCIL
];
175 * Remove any texture or renderbuffer attached to the given attachment
176 * point. Update reference counts, etc.
179 _mesa_remove_attachment(GLcontext
*ctx
, struct gl_renderbuffer_attachment
*att
)
181 if (att
->Type
== GL_TEXTURE
) {
182 ASSERT(att
->Texture
);
183 if (ctx
->Driver
.FinishRenderTexture
) {
184 /* tell driver we're done rendering to this texobj */
185 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
187 _mesa_reference_texobj(&att
->Texture
, NULL
); /* unbind */
188 ASSERT(!att
->Texture
);
190 if (att
->Type
== GL_TEXTURE
|| att
->Type
== GL_RENDERBUFFER_EXT
) {
191 ASSERT(!att
->Texture
);
192 _mesa_reference_renderbuffer(&att
->Renderbuffer
, NULL
); /* unbind */
193 ASSERT(!att
->Renderbuffer
);
196 att
->Complete
= GL_TRUE
;
201 * Bind a texture object to an attachment point.
202 * The previous binding, if any, will be removed first.
205 _mesa_set_texture_attachment(GLcontext
*ctx
,
206 struct gl_framebuffer
*fb
,
207 struct gl_renderbuffer_attachment
*att
,
208 struct gl_texture_object
*texObj
,
209 GLenum texTarget
, GLuint level
, GLuint zoffset
)
211 if (att
->Texture
== texObj
) {
212 /* re-attaching same texture */
213 ASSERT(att
->Type
== GL_TEXTURE
);
217 _mesa_remove_attachment(ctx
, att
);
218 att
->Type
= GL_TEXTURE
;
219 assert(!att
->Texture
);
220 _mesa_reference_texobj(&att
->Texture
, texObj
);
223 /* always update these fields */
224 att
->TextureLevel
= level
;
225 if (IS_CUBE_FACE(texTarget
)) {
226 att
->CubeMapFace
= texTarget
- GL_TEXTURE_CUBE_MAP_POSITIVE_X
;
229 att
->CubeMapFace
= 0;
231 att
->Zoffset
= zoffset
;
232 att
->Complete
= GL_FALSE
;
234 if (att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
235 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
241 * Bind a renderbuffer to an attachment point.
242 * The previous binding, if any, will be removed first.
245 _mesa_set_renderbuffer_attachment(GLcontext
*ctx
,
246 struct gl_renderbuffer_attachment
*att
,
247 struct gl_renderbuffer
*rb
)
249 /* XXX check if re-doing same attachment, exit early */
250 _mesa_remove_attachment(ctx
, att
);
251 att
->Type
= GL_RENDERBUFFER_EXT
;
252 att
->Texture
= NULL
; /* just to be safe */
253 att
->Complete
= GL_FALSE
;
254 _mesa_reference_renderbuffer(&att
->Renderbuffer
, rb
);
259 * Fallback for ctx->Driver.FramebufferRenderbuffer()
260 * Attach a renderbuffer object to a framebuffer object.
263 _mesa_framebuffer_renderbuffer(GLcontext
*ctx
, struct gl_framebuffer
*fb
,
264 GLenum attachment
, struct gl_renderbuffer
*rb
)
266 struct gl_renderbuffer_attachment
*att
;
268 _glthread_LOCK_MUTEX(fb
->Mutex
);
270 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
273 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
274 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
275 /* do stencil attachment here (depth already done above) */
276 att
= _mesa_get_attachment(ctx
, fb
, GL_STENCIL_ATTACHMENT_EXT
);
278 _mesa_set_renderbuffer_attachment(ctx
, att
, rb
);
282 _mesa_remove_attachment(ctx
, att
);
285 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
290 * Test if an attachment point is complete and update its Complete field.
291 * \param format if GL_COLOR, this is a color attachment point,
292 * if GL_DEPTH, this is a depth component attachment point,
293 * if GL_STENCIL, this is a stencil component attachment point.
296 test_attachment_completeness(const GLcontext
*ctx
, GLenum format
,
297 struct gl_renderbuffer_attachment
*att
)
299 assert(format
== GL_COLOR
|| format
== GL_DEPTH
|| format
== GL_STENCIL
);
301 /* assume complete */
302 att
->Complete
= GL_TRUE
;
304 /* Look for reasons why the attachment might be incomplete */
305 if (att
->Type
== GL_TEXTURE
) {
306 const struct gl_texture_object
*texObj
= att
->Texture
;
307 struct gl_texture_image
*texImage
;
310 att
->Complete
= GL_FALSE
;
314 texImage
= texObj
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
316 att
->Complete
= GL_FALSE
;
319 if (texImage
->Width
< 1 || texImage
->Height
< 1) {
320 att
->Complete
= GL_FALSE
;
323 if (texObj
->Target
== GL_TEXTURE_3D
&& att
->Zoffset
>= texImage
->Depth
) {
324 att
->Complete
= GL_FALSE
;
328 if (format
== GL_COLOR
) {
329 if (texImage
->TexFormat
->BaseFormat
!= GL_RGB
&&
330 texImage
->TexFormat
->BaseFormat
!= GL_RGBA
) {
331 att
->Complete
= GL_FALSE
;
335 else if (format
== GL_DEPTH
) {
336 if (texImage
->TexFormat
->BaseFormat
== GL_DEPTH_COMPONENT
) {
339 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
340 texImage
->TexFormat
->BaseFormat
== GL_DEPTH_STENCIL_EXT
) {
344 att
->Complete
= GL_FALSE
;
349 /* no such thing as stencil textures */
350 att
->Complete
= GL_FALSE
;
354 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
355 ASSERT(att
->Renderbuffer
);
356 if (!att
->Renderbuffer
->InternalFormat
||
357 att
->Renderbuffer
->Width
< 1 ||
358 att
->Renderbuffer
->Height
< 1) {
359 att
->Complete
= GL_FALSE
;
362 if (format
== GL_COLOR
) {
363 if (att
->Renderbuffer
->_BaseFormat
!= GL_RGB
&&
364 att
->Renderbuffer
->_BaseFormat
!= GL_RGBA
) {
365 ASSERT(att
->Renderbuffer
->RedBits
);
366 ASSERT(att
->Renderbuffer
->GreenBits
);
367 ASSERT(att
->Renderbuffer
->BlueBits
);
368 att
->Complete
= GL_FALSE
;
372 else if (format
== GL_DEPTH
) {
373 ASSERT(att
->Renderbuffer
->DepthBits
);
374 if (att
->Renderbuffer
->_BaseFormat
== GL_DEPTH_COMPONENT
) {
377 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
378 att
->Renderbuffer
->_BaseFormat
== GL_DEPTH_STENCIL_EXT
) {
382 att
->Complete
= GL_FALSE
;
387 assert(format
== GL_STENCIL
);
388 ASSERT(att
->Renderbuffer
->StencilBits
);
389 if (att
->Renderbuffer
->_BaseFormat
== GL_STENCIL_INDEX
) {
392 else if (ctx
->Extensions
.EXT_packed_depth_stencil
&&
393 att
->Renderbuffer
->_BaseFormat
== GL_DEPTH_STENCIL_EXT
) {
397 att
->Complete
= GL_FALSE
;
403 ASSERT(att
->Type
== GL_NONE
);
411 * Helpful for debugging
414 fbo_incomplete(const char *msg
, int index
)
419 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
425 * Test if the given framebuffer object is complete and update its
426 * Status field with the results.
427 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
428 * driver to make hardware-specific validation/completeness checks.
429 * Also update the framebuffer's Width and Height fields if the
430 * framebuffer is complete.
433 _mesa_test_framebuffer_completeness(GLcontext
*ctx
, struct gl_framebuffer
*fb
)
436 GLenum intFormat
= GL_NONE
; /* color buffers' internal format */
437 GLuint minWidth
= ~0, minHeight
= ~0, maxWidth
= 0, maxHeight
= 0;
438 GLint numSamples
= -1;
442 assert(fb
->Name
!= 0);
448 /* Start at -2 to more easily loop over all attachment points.
453 for (i
= -2; i
< (GLint
) ctx
->Const
.MaxColorAttachments
; i
++) {
454 struct gl_renderbuffer_attachment
*att
;
458 * XXX for ARB_fbo, only check color buffers that are named by
459 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
462 /* check for attachment completeness
465 att
= &fb
->Attachment
[BUFFER_DEPTH
];
466 test_attachment_completeness(ctx
, GL_DEPTH
, att
);
467 if (!att
->Complete
) {
468 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
469 fbo_incomplete("depth attachment incomplete", -1);
474 att
= &fb
->Attachment
[BUFFER_STENCIL
];
475 test_attachment_completeness(ctx
, GL_STENCIL
, att
);
476 if (!att
->Complete
) {
477 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
478 fbo_incomplete("stencil attachment incomplete", -1);
483 att
= &fb
->Attachment
[BUFFER_COLOR0
+ i
];
484 test_attachment_completeness(ctx
, GL_COLOR
, att
);
485 if (!att
->Complete
) {
486 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT
;
487 fbo_incomplete("color attachment incomplete", i
);
492 /* get width, height, format of the renderbuffer/texture
494 if (att
->Type
== GL_TEXTURE
) {
495 const struct gl_texture_image
*texImg
496 = att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
];
497 minWidth
= MIN2(minWidth
, texImg
->Width
);
498 maxWidth
= MAX2(maxWidth
, texImg
->Width
);
499 minHeight
= MIN2(minHeight
, texImg
->Height
);
500 maxHeight
= MAX2(maxHeight
, texImg
->Height
);
501 f
= texImg
->_BaseFormat
;
503 if (f
!= GL_RGB
&& f
!= GL_RGBA
&& f
!= GL_DEPTH_COMPONENT
504 && f
!= GL_DEPTH_STENCIL_EXT
) {
505 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
506 fbo_incomplete("texture attachment incomplete", -1);
510 else if (att
->Type
== GL_RENDERBUFFER_EXT
) {
511 minWidth
= MIN2(minWidth
, att
->Renderbuffer
->Width
);
512 maxWidth
= MAX2(minWidth
, att
->Renderbuffer
->Width
);
513 minHeight
= MIN2(minHeight
, att
->Renderbuffer
->Height
);
514 maxHeight
= MAX2(minHeight
, att
->Renderbuffer
->Height
);
515 f
= att
->Renderbuffer
->InternalFormat
;
519 assert(att
->Type
== GL_NONE
);
523 /* Error-check width, height, format, samples
525 if (numImages
== 1) {
526 /* save format, num samples */
529 numSamples
= att
->Renderbuffer
->NumSamples
;
533 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
534 /* check that width, height, format are same */
535 if (minWidth
!= maxWidth
|| minHeight
!= maxHeight
) {
536 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT
;
537 fbo_incomplete("width or height mismatch", -1);
540 /* check that all color buffer have same format */
541 if (intFormat
!= GL_NONE
&& f
!= intFormat
) {
542 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT
;
543 fbo_incomplete("format mismatch", -1);
547 if (att
->Renderbuffer
&&
548 att
->Renderbuffer
->NumSamples
!= numSamples
) {
549 fbo_incomplete("inconsistant number of samples", i
);
556 #ifndef FEATURE_OES_framebuffer_object
557 /* Check that all DrawBuffers are present */
558 for (j
= 0; j
< ctx
->Const
.MaxDrawBuffers
; j
++) {
559 if (fb
->ColorDrawBuffer
[j
] != GL_NONE
) {
560 const struct gl_renderbuffer_attachment
*att
561 = _mesa_get_attachment(ctx
, fb
, fb
->ColorDrawBuffer
[j
]);
563 if (att
->Type
== GL_NONE
) {
564 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT
;
565 fbo_incomplete("missing drawbuffer", j
);
571 /* Check that the ReadBuffer is present */
572 if (fb
->ColorReadBuffer
!= GL_NONE
) {
573 const struct gl_renderbuffer_attachment
*att
574 = _mesa_get_attachment(ctx
, fb
, fb
->ColorReadBuffer
);
576 if (att
->Type
== GL_NONE
) {
577 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT
;
578 fbo_incomplete("missing readbuffer", -1);
584 if (numImages
== 0) {
585 fb
->_Status
= GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT
;
586 fbo_incomplete("no attachments", -1);
590 /* Provisionally set status = COMPLETE ... */
591 fb
->_Status
= GL_FRAMEBUFFER_COMPLETE_EXT
;
593 /* ... but the driver may say the FB is incomplete.
594 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
597 if (ctx
->Driver
.ValidateFramebuffer
) {
598 ctx
->Driver
.ValidateFramebuffer(ctx
, fb
);
599 if (fb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
600 fbo_incomplete("driver marked FBO as incomplete", -1);
604 if (fb
->_Status
== GL_FRAMEBUFFER_COMPLETE_EXT
) {
606 * Note that if ARB_framebuffer_object is supported and the attached
607 * renderbuffers/textures are different sizes, the framebuffer
608 * width/height will be set to the smallest width/height.
610 fb
->Width
= minWidth
;
611 fb
->Height
= minHeight
;
617 _mesa_IsRenderbufferEXT(GLuint renderbuffer
)
619 GET_CURRENT_CONTEXT(ctx
);
620 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
622 struct gl_renderbuffer
*rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
623 if (rb
!= NULL
&& rb
!= &DummyRenderbuffer
)
631 _mesa_BindRenderbufferEXT(GLenum target
, GLuint renderbuffer
)
633 struct gl_renderbuffer
*newRb
;
634 GET_CURRENT_CONTEXT(ctx
);
636 ASSERT_OUTSIDE_BEGIN_END(ctx
);
638 if (target
!= GL_RENDERBUFFER_EXT
) {
639 _mesa_error(ctx
, GL_INVALID_ENUM
,
640 "glBindRenderbufferEXT(target)");
644 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
645 /* The above doesn't fully flush the drivers in the way that a
646 * glFlush does, but that is required here:
648 if (ctx
->Driver
.Flush
)
649 ctx
->Driver
.Flush(ctx
);
653 newRb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
654 if (newRb
== &DummyRenderbuffer
) {
655 /* ID was reserved, but no real renderbuffer object made yet */
658 else if (!newRb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
659 /* All RB IDs must be Gen'd */
660 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindRenderbuffer(buffer)");
665 /* create new renderbuffer object */
666 newRb
= ctx
->Driver
.NewRenderbuffer(ctx
, renderbuffer
);
668 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindRenderbufferEXT");
671 ASSERT(newRb
->AllocStorage
);
672 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, renderbuffer
, newRb
);
673 newRb
->RefCount
= 1; /* referenced by hash table */
680 ASSERT(newRb
!= &DummyRenderbuffer
);
682 _mesa_reference_renderbuffer(&ctx
->CurrentRenderbuffer
, newRb
);
687 _mesa_DeleteRenderbuffersEXT(GLsizei n
, const GLuint
*renderbuffers
)
690 GET_CURRENT_CONTEXT(ctx
);
692 ASSERT_OUTSIDE_BEGIN_END(ctx
);
693 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
695 for (i
= 0; i
< n
; i
++) {
696 if (renderbuffers
[i
] > 0) {
697 struct gl_renderbuffer
*rb
;
698 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffers
[i
]);
700 /* check if deleting currently bound renderbuffer object */
701 if (rb
== ctx
->CurrentRenderbuffer
) {
703 ASSERT(rb
->RefCount
>= 2);
704 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT
, 0);
707 /* Remove from hash table immediately, to free the ID.
708 * But the object will not be freed until it's no longer
709 * referenced anywhere else.
711 _mesa_HashRemove(ctx
->Shared
->RenderBuffers
, renderbuffers
[i
]);
713 if (rb
!= &DummyRenderbuffer
) {
714 /* no longer referenced by hash table */
715 _mesa_reference_renderbuffer(&rb
, NULL
);
724 _mesa_GenRenderbuffersEXT(GLsizei n
, GLuint
*renderbuffers
)
726 GET_CURRENT_CONTEXT(ctx
);
730 ASSERT_OUTSIDE_BEGIN_END(ctx
);
733 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenRenderbuffersEXT(n)");
740 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->RenderBuffers
, n
);
742 for (i
= 0; i
< n
; i
++) {
743 GLuint name
= first
+ i
;
744 renderbuffers
[i
] = name
;
745 /* insert dummy placeholder into hash table */
746 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
747 _mesa_HashInsert(ctx
->Shared
->RenderBuffers
, name
, &DummyRenderbuffer
);
748 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
754 * Given an internal format token for a render buffer, return the
755 * corresponding base format.
756 * This is very similar to _mesa_base_tex_format() but the set of valid
757 * internal formats is somewhat different.
759 * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
760 * GL_DEPTH_STENCIL_EXT or zero if error.
763 _mesa_base_fbo_format(GLcontext
*ctx
, GLenum internalFormat
)
765 switch (internalFormat
) {
784 case GL_STENCIL_INDEX
:
785 case GL_STENCIL_INDEX1_EXT
:
786 case GL_STENCIL_INDEX4_EXT
:
787 case GL_STENCIL_INDEX8_EXT
:
788 case GL_STENCIL_INDEX16_EXT
:
789 return GL_STENCIL_INDEX
;
790 case GL_DEPTH_COMPONENT
:
791 case GL_DEPTH_COMPONENT16
:
792 case GL_DEPTH_COMPONENT24
:
793 case GL_DEPTH_COMPONENT32
:
794 return GL_DEPTH_COMPONENT
;
795 case GL_DEPTH_STENCIL_EXT
:
796 case GL_DEPTH24_STENCIL8_EXT
:
797 if (ctx
->Extensions
.EXT_packed_depth_stencil
)
798 return GL_DEPTH_STENCIL_EXT
;
801 /* XXX add floating point formats eventually */
808 /** sentinal value, see below */
809 #define NO_SAMPLES 1000
813 * Helper function used by _mesa_RenderbufferStorageEXT() and
814 * _mesa_RenderbufferStorageMultisample().
815 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
818 renderbuffer_storage(GLenum target
, GLenum internalFormat
,
819 GLsizei width
, GLsizei height
, GLsizei samples
)
821 const char *func
= samples
== NO_SAMPLES
?
822 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
823 struct gl_renderbuffer
*rb
;
825 GET_CURRENT_CONTEXT(ctx
);
827 ASSERT_OUTSIDE_BEGIN_END(ctx
);
829 if (target
!= GL_RENDERBUFFER_EXT
) {
830 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(target)", func
);
834 baseFormat
= _mesa_base_fbo_format(ctx
, internalFormat
);
835 if (baseFormat
== 0) {
836 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(internalFormat)", func
);
840 if (width
< 1 || width
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
841 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(width)", func
);
845 if (height
< 1 || height
> (GLsizei
) ctx
->Const
.MaxRenderbufferSize
) {
846 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(height)", func
);
850 if (samples
== NO_SAMPLES
) {
851 /* NumSamples == 0 indicates non-multisampling */
854 else if (samples
> ctx
->Const
.MaxSamples
) {
855 /* note: driver may choose to use more samples than what's requested */
856 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(samples)", func
);
860 rb
= ctx
->CurrentRenderbuffer
;
862 _mesa_error(ctx
, GL_INVALID_OPERATION
, func
);
866 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
868 if (rb
->InternalFormat
== internalFormat
&&
869 rb
->Width
== (GLuint
) width
&&
870 rb
->Height
== (GLuint
) height
) {
871 /* no change in allocation needed */
875 /* These MUST get set by the AllocStorage func */
876 rb
->_ActualFormat
= 0;
884 rb
->NumSamples
= samples
;
886 /* Now allocate the storage */
887 ASSERT(rb
->AllocStorage
);
888 if (rb
->AllocStorage(ctx
, rb
, internalFormat
, width
, height
)) {
889 /* No error - check/set fields now */
890 assert(rb
->_ActualFormat
);
891 assert(rb
->Width
== (GLuint
) width
);
892 assert(rb
->Height
== (GLuint
) height
);
893 assert(rb
->RedBits
|| rb
->GreenBits
|| rb
->BlueBits
|| rb
->AlphaBits
||
894 rb
->DepthBits
|| rb
->StencilBits
|| rb
->IndexBits
);
895 rb
->InternalFormat
= internalFormat
;
896 rb
->_BaseFormat
= baseFormat
;
899 /* Probably ran out of memory - clear the fields */
902 rb
->InternalFormat
= GL_NONE
;
903 rb
->_ActualFormat
= GL_NONE
;
904 rb
->_BaseFormat
= GL_NONE
;
916 test_framebuffer_completeness(ctx, fb);
918 /* XXX if this renderbuffer is attached anywhere, invalidate attachment
925 _mesa_RenderbufferStorageEXT(GLenum target
, GLenum internalFormat
,
926 GLsizei width
, GLsizei height
)
928 /* GL_ARB_fbo says calling this function is equivalent to calling
929 * glRenderbufferStorageMultisample() with samples=0. We pass in
930 * a token value here just for error reporting purposes.
932 renderbuffer_storage(target
, internalFormat
, width
, height
, NO_SAMPLES
);
937 _mesa_RenderbufferStorageMultisample(GLenum target
, GLsizei samples
,
938 GLenum internalFormat
,
939 GLsizei width
, GLsizei height
)
941 renderbuffer_storage(target
, internalFormat
, width
, height
, samples
);
947 _mesa_GetRenderbufferParameterivEXT(GLenum target
, GLenum pname
, GLint
*params
)
949 struct gl_renderbuffer
*rb
;
950 GET_CURRENT_CONTEXT(ctx
);
952 ASSERT_OUTSIDE_BEGIN_END(ctx
);
954 if (target
!= GL_RENDERBUFFER_EXT
) {
955 _mesa_error(ctx
, GL_INVALID_ENUM
,
956 "glGetRenderbufferParameterivEXT(target)");
960 rb
= ctx
->CurrentRenderbuffer
;
962 _mesa_error(ctx
, GL_INVALID_OPERATION
,
963 "glGetRenderbufferParameterivEXT");
967 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
970 case GL_RENDERBUFFER_WIDTH_EXT
:
973 case GL_RENDERBUFFER_HEIGHT_EXT
:
974 *params
= rb
->Height
;
976 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT
:
977 *params
= rb
->InternalFormat
;
979 case GL_RENDERBUFFER_RED_SIZE_EXT
:
980 *params
= rb
->RedBits
;
982 case GL_RENDERBUFFER_GREEN_SIZE_EXT
:
983 *params
= rb
->GreenBits
;
985 case GL_RENDERBUFFER_BLUE_SIZE_EXT
:
986 *params
= rb
->BlueBits
;
988 case GL_RENDERBUFFER_ALPHA_SIZE_EXT
:
989 *params
= rb
->AlphaBits
;
991 case GL_RENDERBUFFER_DEPTH_SIZE_EXT
:
992 *params
= rb
->DepthBits
;
994 case GL_RENDERBUFFER_STENCIL_SIZE_EXT
:
995 *params
= rb
->StencilBits
;
997 case GL_RENDERBUFFER_SAMPLES
:
998 if (ctx
->Extensions
.ARB_framebuffer_object
) {
999 *params
= rb
->NumSamples
;
1004 _mesa_error(ctx
, GL_INVALID_ENUM
,
1005 "glGetRenderbufferParameterivEXT(target)");
1011 GLboolean GLAPIENTRY
1012 _mesa_IsFramebufferEXT(GLuint framebuffer
)
1014 GET_CURRENT_CONTEXT(ctx
);
1015 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, GL_FALSE
);
1017 struct gl_framebuffer
*rb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1018 if (rb
!= NULL
&& rb
!= &DummyFramebuffer
)
1026 check_begin_texture_render(GLcontext
*ctx
, struct gl_framebuffer
*fb
)
1029 ASSERT(ctx
->Driver
.RenderTexture
);
1030 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1031 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1032 struct gl_texture_object
*texObj
= att
->Texture
;
1034 && att
->Texture
->Image
[att
->CubeMapFace
][att
->TextureLevel
]) {
1035 ctx
->Driver
.RenderTexture(ctx
, fb
, att
);
1042 * Examine all the framebuffer's attachments to see if any are textures.
1043 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1044 * notify the device driver that the texture image may have changed.
1047 check_end_texture_render(GLcontext
*ctx
, struct gl_framebuffer
*fb
)
1049 if (ctx
->Driver
.FinishRenderTexture
) {
1051 for (i
= 0; i
< BUFFER_COUNT
; i
++) {
1052 struct gl_renderbuffer_attachment
*att
= fb
->Attachment
+ i
;
1053 if (att
->Texture
&& att
->Renderbuffer
) {
1054 ctx
->Driver
.FinishRenderTexture(ctx
, att
);
1062 _mesa_BindFramebufferEXT(GLenum target
, GLuint framebuffer
)
1064 struct gl_framebuffer
*newFb
, *newFbread
;
1065 GLboolean bindReadBuf
, bindDrawBuf
;
1066 GET_CURRENT_CONTEXT(ctx
);
1069 if (ctx
->Extensions
.ARB_framebuffer_object
) {
1070 ASSERT(ctx
->Extensions
.EXT_framebuffer_object
);
1071 ASSERT(ctx
->Extensions
.EXT_framebuffer_blit
);
1075 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1077 if (!ctx
->Extensions
.EXT_framebuffer_object
) {
1078 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1079 "glBindFramebufferEXT(unsupported)");
1084 #if FEATURE_EXT_framebuffer_blit
1085 case GL_DRAW_FRAMEBUFFER_EXT
:
1086 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1087 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1090 bindDrawBuf
= GL_TRUE
;
1091 bindReadBuf
= GL_FALSE
;
1093 case GL_READ_FRAMEBUFFER_EXT
:
1094 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1095 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1098 bindDrawBuf
= GL_FALSE
;
1099 bindReadBuf
= GL_TRUE
;
1102 case GL_FRAMEBUFFER_EXT
:
1103 bindDrawBuf
= GL_TRUE
;
1104 bindReadBuf
= GL_TRUE
;
1107 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBindFramebufferEXT(target)");
1111 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1113 if (ctx
->Driver
.Flush
) {
1114 ctx
->Driver
.Flush(ctx
);
1118 /* Binding a user-created framebuffer object */
1119 newFb
= _mesa_lookup_framebuffer(ctx
, framebuffer
);
1120 if (newFb
== &DummyFramebuffer
) {
1121 /* ID was reserved, but no real framebuffer object made yet */
1124 else if (!newFb
&& ctx
->Extensions
.ARB_framebuffer_object
) {
1125 /* All FBO IDs must be Gen'd */
1126 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFramebuffer(buffer)");
1131 /* create new framebuffer object */
1132 newFb
= ctx
->Driver
.NewFramebuffer(ctx
, framebuffer
);
1134 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindFramebufferEXT");
1137 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, framebuffer
, newFb
);
1142 /* Binding the window system framebuffer (which was originally set
1143 * with MakeCurrent).
1145 newFb
= ctx
->WinSysDrawBuffer
;
1146 newFbread
= ctx
->WinSysReadBuffer
;
1150 ASSERT(newFb
!= &DummyFramebuffer
);
1153 * XXX check if re-binding same buffer and skip some of this code.
1157 _mesa_reference_framebuffer(&ctx
->ReadBuffer
, newFbread
);
1161 /* check if old FB had any texture attachments */
1162 check_end_texture_render(ctx
, ctx
->DrawBuffer
);
1164 /* check if time to delete this framebuffer */
1165 _mesa_reference_framebuffer(&ctx
->DrawBuffer
, newFb
);
1167 if (newFb
->Name
!= 0) {
1168 /* check if newly bound framebuffer has any texture attachments */
1169 check_begin_texture_render(ctx
, newFb
);
1173 if (ctx
->Driver
.BindFramebuffer
) {
1174 ctx
->Driver
.BindFramebuffer(ctx
, target
, newFb
, newFbread
);
1180 _mesa_DeleteFramebuffersEXT(GLsizei n
, const GLuint
*framebuffers
)
1183 GET_CURRENT_CONTEXT(ctx
);
1185 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1186 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1187 /* The above doesn't fully flush the drivers in the way that a
1188 * glFlush does, but that is required here:
1190 if (ctx
->Driver
.Flush
)
1191 ctx
->Driver
.Flush(ctx
);
1193 for (i
= 0; i
< n
; i
++) {
1194 if (framebuffers
[i
] > 0) {
1195 struct gl_framebuffer
*fb
;
1196 fb
= _mesa_lookup_framebuffer(ctx
, framebuffers
[i
]);
1198 ASSERT(fb
== &DummyFramebuffer
|| fb
->Name
== framebuffers
[i
]);
1200 /* check if deleting currently bound framebuffer object */
1201 if (fb
== ctx
->DrawBuffer
) {
1203 ASSERT(fb
->RefCount
>= 2);
1204 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT
, 0);
1207 /* remove from hash table immediately, to free the ID */
1208 _mesa_HashRemove(ctx
->Shared
->FrameBuffers
, framebuffers
[i
]);
1210 if (fb
!= &DummyFramebuffer
) {
1211 /* But the object will not be freed until it's no longer
1212 * bound in any context.
1214 _mesa_unreference_framebuffer(&fb
);
1223 _mesa_GenFramebuffersEXT(GLsizei n
, GLuint
*framebuffers
)
1225 GET_CURRENT_CONTEXT(ctx
);
1229 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1232 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGenFramebuffersEXT(n)");
1239 first
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->FrameBuffers
, n
);
1241 for (i
= 0; i
< n
; i
++) {
1242 GLuint name
= first
+ i
;
1243 framebuffers
[i
] = name
;
1244 /* insert dummy placeholder into hash table */
1245 _glthread_LOCK_MUTEX(ctx
->Shared
->Mutex
);
1246 _mesa_HashInsert(ctx
->Shared
->FrameBuffers
, name
, &DummyFramebuffer
);
1247 _glthread_UNLOCK_MUTEX(ctx
->Shared
->Mutex
);
1254 _mesa_CheckFramebufferStatusEXT(GLenum target
)
1256 struct gl_framebuffer
*buffer
;
1257 GET_CURRENT_CONTEXT(ctx
);
1259 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx
, 0);
1262 #if FEATURE_EXT_framebuffer_blit
1263 case GL_DRAW_FRAMEBUFFER_EXT
:
1264 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1265 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1268 buffer
= ctx
->DrawBuffer
;
1270 case GL_READ_FRAMEBUFFER_EXT
:
1271 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1272 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1275 buffer
= ctx
->ReadBuffer
;
1278 case GL_FRAMEBUFFER_EXT
:
1279 buffer
= ctx
->DrawBuffer
;
1282 _mesa_error(ctx
, GL_INVALID_ENUM
, "glCheckFramebufferStatus(target)");
1283 return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */
1286 if (buffer
->Name
== 0) {
1287 /* The window system / default framebuffer is always complete */
1288 return GL_FRAMEBUFFER_COMPLETE_EXT
;
1291 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1293 _mesa_test_framebuffer_completeness(ctx
, buffer
);
1294 return buffer
->_Status
;
1300 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1303 framebuffer_texture(GLcontext
*ctx
, const char *caller
, GLenum target
,
1304 GLenum attachment
, GLenum textarget
, GLuint texture
,
1305 GLint level
, GLint zoffset
)
1307 struct gl_renderbuffer_attachment
*att
;
1308 struct gl_texture_object
*texObj
= NULL
;
1309 struct gl_framebuffer
*fb
;
1311 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1313 if (target
!= GL_FRAMEBUFFER_EXT
) {
1314 _mesa_error(ctx
, GL_INVALID_ENUM
,
1315 "glFramebufferTexture%sEXT(target)", caller
);
1319 fb
= ctx
->DrawBuffer
;
1322 /* check framebuffer binding */
1323 if (fb
->Name
== 0) {
1324 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1325 "glFramebufferTexture%sEXT", caller
);
1330 /* The textarget, level, and zoffset parameters are only validated if
1331 * texture is non-zero.
1334 GLboolean err
= GL_TRUE
;
1336 texObj
= _mesa_lookup_texture(ctx
, texture
);
1337 if (texObj
!= NULL
) {
1338 if (textarget
== 0) {
1339 err
= (texObj
->Target
!= GL_TEXTURE_3D
) &&
1340 (texObj
->Target
!= GL_TEXTURE_1D_ARRAY_EXT
) &&
1341 (texObj
->Target
!= GL_TEXTURE_2D_ARRAY_EXT
);
1344 err
= (texObj
->Target
== GL_TEXTURE_CUBE_MAP
)
1345 ? !IS_CUBE_FACE(textarget
)
1346 : (texObj
->Target
!= textarget
);
1351 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1352 "glFramebufferTexture%sEXT(texture target mismatch)",
1357 if (texObj
->Target
== GL_TEXTURE_3D
) {
1358 const GLint maxSize
= 1 << (ctx
->Const
.Max3DTextureLevels
- 1);
1359 if (zoffset
< 0 || zoffset
>= maxSize
) {
1360 _mesa_error(ctx
, GL_INVALID_VALUE
,
1361 "glFramebufferTexture%sEXT(zoffset)", caller
);
1365 else if ((texObj
->Target
== GL_TEXTURE_1D_ARRAY_EXT
) ||
1366 (texObj
->Target
== GL_TEXTURE_2D_ARRAY_EXT
)) {
1367 if (zoffset
< 0 || zoffset
>= ctx
->Const
.MaxArrayTextureLayers
) {
1368 _mesa_error(ctx
, GL_INVALID_VALUE
,
1369 "glFramebufferTexture%sEXT(layer)", caller
);
1375 (level
>= _mesa_max_texture_levels(ctx
, texObj
->Target
))) {
1376 _mesa_error(ctx
, GL_INVALID_VALUE
,
1377 "glFramebufferTexture%sEXT(level)", caller
);
1382 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1384 _mesa_error(ctx
, GL_INVALID_ENUM
,
1385 "glFramebufferTexture%sEXT(attachment)", caller
);
1389 if (texObj
&& attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
1390 /* the texture format must be depth+stencil */
1391 const struct gl_texture_image
*texImg
;
1392 texImg
= texObj
->Image
[0][texObj
->BaseLevel
];
1393 if (!texImg
|| texImg
->_BaseFormat
!= GL_DEPTH_STENCIL
) {
1394 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1395 "glFramebufferTexture%sEXT(texture is not"
1396 " DEPTH_STENCIL format)", caller
);
1401 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1402 /* The above doesn't fully flush the drivers in the way that a
1403 * glFlush does, but that is required here:
1405 if (ctx
->Driver
.Flush
)
1406 ctx
->Driver
.Flush(ctx
);
1408 _glthread_LOCK_MUTEX(fb
->Mutex
);
1410 _mesa_set_texture_attachment(ctx
, fb
, att
, texObj
, textarget
,
1414 _mesa_remove_attachment(ctx
, att
);
1416 _glthread_UNLOCK_MUTEX(fb
->Mutex
);
1422 _mesa_FramebufferTexture1DEXT(GLenum target
, GLenum attachment
,
1423 GLenum textarget
, GLuint texture
, GLint level
)
1425 GET_CURRENT_CONTEXT(ctx
);
1427 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_1D
)) {
1428 _mesa_error(ctx
, GL_INVALID_ENUM
,
1429 "glFramebufferTexture1DEXT(textarget)");
1433 framebuffer_texture(ctx
, "1D", target
, attachment
, textarget
, texture
,
1439 _mesa_FramebufferTexture2DEXT(GLenum target
, GLenum attachment
,
1440 GLenum textarget
, GLuint texture
, GLint level
)
1442 GET_CURRENT_CONTEXT(ctx
);
1444 if ((texture
!= 0) &&
1445 (textarget
!= GL_TEXTURE_2D
) &&
1446 (textarget
!= GL_TEXTURE_RECTANGLE_ARB
) &&
1447 (!IS_CUBE_FACE(textarget
))) {
1448 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1449 "glFramebufferTexture2DEXT(textarget)");
1453 framebuffer_texture(ctx
, "2D", target
, attachment
, textarget
, texture
,
1459 _mesa_FramebufferTexture3DEXT(GLenum target
, GLenum attachment
,
1460 GLenum textarget
, GLuint texture
,
1461 GLint level
, GLint zoffset
)
1463 GET_CURRENT_CONTEXT(ctx
);
1465 if ((texture
!= 0) && (textarget
!= GL_TEXTURE_3D
)) {
1466 _mesa_error(ctx
, GL_INVALID_ENUM
,
1467 "glFramebufferTexture3DEXT(textarget)");
1471 framebuffer_texture(ctx
, "3D", target
, attachment
, textarget
, texture
,
1477 _mesa_FramebufferTextureLayerEXT(GLenum target
, GLenum attachment
,
1478 GLuint texture
, GLint level
, GLint layer
)
1480 GET_CURRENT_CONTEXT(ctx
);
1482 framebuffer_texture(ctx
, "Layer", target
, attachment
, 0, texture
,
1488 _mesa_FramebufferRenderbufferEXT(GLenum target
, GLenum attachment
,
1489 GLenum renderbufferTarget
,
1490 GLuint renderbuffer
)
1492 struct gl_renderbuffer_attachment
*att
;
1493 struct gl_framebuffer
*fb
;
1494 struct gl_renderbuffer
*rb
;
1495 GET_CURRENT_CONTEXT(ctx
);
1497 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1500 #if FEATURE_EXT_framebuffer_blit
1501 case GL_DRAW_FRAMEBUFFER_EXT
:
1502 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1503 _mesa_error(ctx
, GL_INVALID_ENUM
,
1504 "glFramebufferRenderbufferEXT(target)");
1507 fb
= ctx
->DrawBuffer
;
1509 case GL_READ_FRAMEBUFFER_EXT
:
1510 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1511 _mesa_error(ctx
, GL_INVALID_ENUM
,
1512 "glFramebufferRenderbufferEXT(target)");
1515 fb
= ctx
->ReadBuffer
;
1518 case GL_FRAMEBUFFER_EXT
:
1519 fb
= ctx
->DrawBuffer
;
1522 _mesa_error(ctx
, GL_INVALID_ENUM
,
1523 "glFramebufferRenderbufferEXT(target)");
1527 if (renderbufferTarget
!= GL_RENDERBUFFER_EXT
) {
1528 _mesa_error(ctx
, GL_INVALID_ENUM
,
1529 "glFramebufferRenderbufferEXT(renderbufferTarget)");
1533 if (fb
->Name
== 0) {
1534 /* Can't attach new renderbuffers to a window system framebuffer */
1535 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glFramebufferRenderbufferEXT");
1539 att
= _mesa_get_attachment(ctx
, fb
, attachment
);
1541 _mesa_error(ctx
, GL_INVALID_ENUM
,
1542 "glFramebufferRenderbufferEXT(attachment)");
1547 rb
= _mesa_lookup_renderbuffer(ctx
, renderbuffer
);
1549 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1550 "glFramebufferRenderbufferEXT(renderbuffer)");
1555 /* remove renderbuffer attachment */
1559 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
1560 /* make sure the renderbuffer is a depth/stencil format */
1561 if (rb
->_BaseFormat
!= GL_DEPTH_STENCIL
) {
1562 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1563 "glFramebufferRenderbufferEXT(renderbuffer"
1564 " is not DEPTH_STENCIL format)");
1570 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1571 /* The above doesn't fully flush the drivers in the way that a
1572 * glFlush does, but that is required here:
1574 if (ctx
->Driver
.Flush
)
1575 ctx
->Driver
.Flush(ctx
);
1577 assert(ctx
->Driver
.FramebufferRenderbuffer
);
1578 ctx
->Driver
.FramebufferRenderbuffer(ctx
, fb
, attachment
, rb
);
1580 /* Some subsequent GL commands may depend on the framebuffer's visual
1581 * after the binding is updated. Update visual info now.
1583 _mesa_update_framebuffer_visual(fb
);
1588 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target
, GLenum attachment
,
1589 GLenum pname
, GLint
*params
)
1591 const struct gl_renderbuffer_attachment
*att
;
1592 struct gl_framebuffer
*buffer
;
1593 GET_CURRENT_CONTEXT(ctx
);
1595 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1598 #if FEATURE_EXT_framebuffer_blit
1599 case GL_DRAW_FRAMEBUFFER_EXT
:
1600 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1601 _mesa_error(ctx
, GL_INVALID_ENUM
,
1602 "glGetFramebufferAttachmentParameterivEXT(target)");
1605 buffer
= ctx
->DrawBuffer
;
1607 case GL_READ_FRAMEBUFFER_EXT
:
1608 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1609 _mesa_error(ctx
, GL_INVALID_ENUM
,
1610 "glGetFramebufferAttachmentParameterivEXT(target)");
1613 buffer
= ctx
->ReadBuffer
;
1616 case GL_FRAMEBUFFER_EXT
:
1617 buffer
= ctx
->DrawBuffer
;
1620 _mesa_error(ctx
, GL_INVALID_ENUM
,
1621 "glGetFramebufferAttachmentParameterivEXT(target)");
1625 if (buffer
->Name
== 0) {
1626 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1627 "glGetFramebufferAttachmentParameterivEXT");
1631 att
= _mesa_get_attachment(ctx
, buffer
, attachment
);
1633 _mesa_error(ctx
, GL_INVALID_ENUM
,
1634 "glGetFramebufferAttachmentParameterivEXT(attachment)");
1638 if (attachment
== GL_DEPTH_STENCIL_ATTACHMENT
) {
1639 /* the depth and stencil attachments must point to the same buffer */
1640 const struct gl_renderbuffer_attachment
*depthAtt
, *stencilAtt
;
1641 depthAtt
= _mesa_get_attachment(ctx
, buffer
, GL_DEPTH_ATTACHMENT
);
1642 stencilAtt
= _mesa_get_attachment(ctx
, buffer
, GL_STENCIL_ATTACHMENT
);
1643 if (depthAtt
->Renderbuffer
!= stencilAtt
->Renderbuffer
) {
1644 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1645 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
1646 " attachments differ)");
1651 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1652 /* The above doesn't fully flush the drivers in the way that a
1653 * glFlush does, but that is required here:
1655 if (ctx
->Driver
.Flush
)
1656 ctx
->Driver
.Flush(ctx
);
1659 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT
:
1660 *params
= att
->Type
;
1662 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT
:
1663 if (att
->Type
== GL_RENDERBUFFER_EXT
) {
1664 *params
= att
->Renderbuffer
->Name
;
1666 else if (att
->Type
== GL_TEXTURE
) {
1667 *params
= att
->Texture
->Name
;
1670 _mesa_error(ctx
, GL_INVALID_ENUM
,
1671 "glGetFramebufferAttachmentParameterivEXT(pname)");
1674 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT
:
1675 if (att
->Type
== GL_TEXTURE
) {
1676 *params
= att
->TextureLevel
;
1679 _mesa_error(ctx
, GL_INVALID_ENUM
,
1680 "glGetFramebufferAttachmentParameterivEXT(pname)");
1683 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT
:
1684 if (att
->Type
== GL_TEXTURE
) {
1685 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_CUBE_MAP
) {
1686 *params
= GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ att
->CubeMapFace
;
1693 _mesa_error(ctx
, GL_INVALID_ENUM
,
1694 "glGetFramebufferAttachmentParameterivEXT(pname)");
1697 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT
:
1698 if (att
->Type
== GL_TEXTURE
) {
1699 if (att
->Texture
&& att
->Texture
->Target
== GL_TEXTURE_3D
) {
1700 *params
= att
->Zoffset
;
1707 _mesa_error(ctx
, GL_INVALID_ENUM
,
1708 "glGetFramebufferAttachmentParameterivEXT(pname)");
1711 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING
:
1712 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1713 _mesa_error(ctx
, GL_INVALID_ENUM
,
1714 "glGetFramebufferAttachmentParameterivEXT(pname)");
1717 *params
= att
->Renderbuffer
->ColorEncoding
;
1720 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE
:
1721 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1722 _mesa_error(ctx
, GL_INVALID_ENUM
,
1723 "glGetFramebufferAttachmentParameterivEXT(pname)");
1727 *params
= att
->Renderbuffer
->ComponentType
;
1730 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE
:
1731 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1732 _mesa_error(ctx
, GL_INVALID_ENUM
,
1733 "glGetFramebufferAttachmentParameterivEXT(pname)");
1736 *params
= att
->Renderbuffer
->RedBits
;
1739 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE
:
1740 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1741 _mesa_error(ctx
, GL_INVALID_ENUM
,
1742 "glGetFramebufferAttachmentParameterivEXT(pname)");
1745 *params
= att
->Renderbuffer
->GreenBits
;
1748 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE
:
1749 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1750 _mesa_error(ctx
, GL_INVALID_ENUM
,
1751 "glGetFramebufferAttachmentParameterivEXT(pname)");
1754 *params
= att
->Renderbuffer
->BlueBits
;
1757 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE
:
1758 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1759 _mesa_error(ctx
, GL_INVALID_ENUM
,
1760 "glGetFramebufferAttachmentParameterivEXT(pname)");
1763 *params
= att
->Renderbuffer
->AlphaBits
;
1766 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE
:
1767 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1768 _mesa_error(ctx
, GL_INVALID_ENUM
,
1769 "glGetFramebufferAttachmentParameterivEXT(pname)");
1772 *params
= att
->Renderbuffer
->DepthBits
;
1775 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE
:
1776 if (!ctx
->Extensions
.ARB_framebuffer_object
) {
1777 _mesa_error(ctx
, GL_INVALID_ENUM
,
1778 "glGetFramebufferAttachmentParameterivEXT(pname)");
1781 *params
= att
->Renderbuffer
->StencilBits
;
1785 _mesa_error(ctx
, GL_INVALID_ENUM
,
1786 "glGetFramebufferAttachmentParameterivEXT(pname)");
1793 _mesa_GenerateMipmapEXT(GLenum target
)
1795 struct gl_texture_unit
*texUnit
;
1796 struct gl_texture_object
*texObj
;
1797 GET_CURRENT_CONTEXT(ctx
);
1799 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1800 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1806 case GL_TEXTURE_CUBE_MAP
:
1807 /* OK, legal value */
1810 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGenerateMipmapEXT(target)");
1814 texUnit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1815 texObj
= _mesa_select_tex_object(ctx
, texUnit
, target
);
1817 _mesa_lock_texture(ctx
, texObj
);
1818 if (target
== GL_TEXTURE_CUBE_MAP
) {
1821 for (face
= 0; face
< 6; face
++)
1822 ctx
->Driver
.GenerateMipmap(ctx
,
1823 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+ face
,
1826 ctx
->Driver
.GenerateMipmap(ctx
, target
, texObj
);
1828 _mesa_unlock_texture(ctx
, texObj
);
1832 #if FEATURE_EXT_framebuffer_blit
1834 * Blit rectangular region, optionally from one framebuffer to another.
1836 * Note, if the src buffer is multisampled and the dest is not, this is
1837 * when the samples must be resolved to a single color.
1840 _mesa_BlitFramebufferEXT(GLint srcX0
, GLint srcY0
, GLint srcX1
, GLint srcY1
,
1841 GLint dstX0
, GLint dstY0
, GLint dstX1
, GLint dstY1
,
1842 GLbitfield mask
, GLenum filter
)
1844 const GLbitfield legalMaskBits
= (GL_COLOR_BUFFER_BIT
|
1845 GL_DEPTH_BUFFER_BIT
|
1846 GL_STENCIL_BUFFER_BIT
);
1847 const struct gl_framebuffer
*readFb
, *drawFb
;
1848 const struct gl_renderbuffer
*colorReadRb
, *colorDrawRb
;
1849 GET_CURRENT_CONTEXT(ctx
);
1851 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1852 FLUSH_VERTICES(ctx
, _NEW_BUFFERS
);
1854 if (ctx
->NewState
) {
1855 _mesa_update_state(ctx
);
1858 readFb
= ctx
->ReadBuffer
;
1859 drawFb
= ctx
->DrawBuffer
;
1861 if (!readFb
|| !drawFb
) {
1862 /* This will normally never happen but someday we may want to
1863 * support MakeCurrent() with no drawables.
1868 /* check for complete framebuffers */
1869 if (drawFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
||
1870 readFb
->_Status
!= GL_FRAMEBUFFER_COMPLETE_EXT
) {
1871 _mesa_error(ctx
, GL_INVALID_FRAMEBUFFER_OPERATION_EXT
,
1872 "glBlitFramebufferEXT(incomplete draw/read buffers)");
1876 if (filter
!= GL_NEAREST
&& filter
!= GL_LINEAR
) {
1877 _mesa_error(ctx
, GL_INVALID_ENUM
, "glBlitFramebufferEXT(filter)");
1881 if (mask
& ~legalMaskBits
) {
1882 _mesa_error( ctx
, GL_INVALID_VALUE
, "glBlitFramebufferEXT(mask)");
1886 /* depth/stencil must be blitted with nearest filtering */
1887 if ((mask
& (GL_DEPTH_BUFFER_BIT
| GL_STENCIL_BUFFER_BIT
))
1888 && filter
!= GL_NEAREST
) {
1889 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1890 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
1894 /* get color read/draw renderbuffers */
1895 if (mask
& GL_COLOR_BUFFER_BIT
) {
1896 colorReadRb
= readFb
->_ColorReadBuffer
;
1897 colorDrawRb
= drawFb
->_ColorDrawBuffers
[0];
1900 colorReadRb
= colorDrawRb
= NULL
;
1903 if (mask
& GL_STENCIL_BUFFER_BIT
) {
1904 struct gl_renderbuffer
*readRb
= readFb
->_StencilBuffer
;
1905 struct gl_renderbuffer
*drawRb
= drawFb
->_StencilBuffer
;
1906 if (readRb
->StencilBits
!= drawRb
->StencilBits
) {
1907 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1908 "glBlitFramebufferEXT(stencil buffer size mismatch");
1913 if (mask
& GL_DEPTH_BUFFER_BIT
) {
1914 struct gl_renderbuffer
*readRb
= readFb
->_DepthBuffer
;
1915 struct gl_renderbuffer
*drawRb
= drawFb
->_DepthBuffer
;
1916 if (readRb
->DepthBits
!= drawRb
->DepthBits
) {
1917 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1918 "glBlitFramebufferEXT(depth buffer size mismatch");
1923 if (readFb
->Visual
.samples
> 0 &&
1924 drawFb
->Visual
.samples
> 0 &&
1925 readFb
->Visual
.samples
!= drawFb
->Visual
.samples
) {
1926 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1927 "glBlitFramebufferEXT(mismatched samples");
1931 /* extra checks for multisample copies... */
1932 if (readFb
->Visual
.samples
> 0 || drawFb
->Visual
.samples
> 0) {
1933 /* src and dest region sizes must be the same */
1934 if (srcX1
- srcX0
!= dstX1
- dstX0
||
1935 srcY1
- srcY0
!= dstY1
- dstY0
) {
1936 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1937 "glBlitFramebufferEXT(bad src/dst multisample region sizes");
1941 /* color formats must match */
1944 colorReadRb
->_ActualFormat
!= colorDrawRb
->_ActualFormat
) {
1945 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1946 "glBlitFramebufferEXT(bad src/dst multisample pixel formats");
1951 if (!ctx
->Extensions
.EXT_framebuffer_blit
) {
1952 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBlitFramebufferEXT");
1956 ASSERT(ctx
->Driver
.BlitFramebuffer
);
1957 ctx
->Driver
.BlitFramebuffer(ctx
,
1958 srcX0
, srcY0
, srcX1
, srcY1
,
1959 dstX0
, dstY0
, dstX1
, dstY1
,
1962 #endif /* FEATURE_EXT_framebuffer_blit */