2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 #include "framebuffer.h"
38 #include "renderbuffer.h"
48 * None of the GL_EXT_framebuffer_object functions are compiled into
55 * When glGenRender/FramebuffersEXT() is called we insert pointers to
56 * these placeholder objects into the hash table.
57 * Later, when the object ID is first bound, we replace the placeholder
58 * with the real frame/renderbuffer.
60 static struct gl_framebuffer DummyFramebuffer;
61 static struct gl_renderbuffer DummyRenderbuffer;
64 #define IS_CUBE_FACE(TARGET) \
65 ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
66 (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
70 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
76 delete_dummy_framebuffer(struct gl_framebuffer *fb)
83 _mesa_init_fbobjects(GLcontext *ctx)
85 DummyFramebuffer.Delete = delete_dummy_framebuffer;
86 DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
91 * Helper routine for getting a gl_renderbuffer.
93 struct gl_renderbuffer *
94 _mesa_lookup_renderbuffer(GLcontext *ctx, GLuint id)
96 struct gl_renderbuffer *rb;
101 rb = (struct gl_renderbuffer *)
102 _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
108 * Helper routine for getting a gl_framebuffer.
110 struct gl_framebuffer *
111 _mesa_lookup_framebuffer(GLcontext *ctx, GLuint id)
113 struct gl_framebuffer *fb;
118 fb = (struct gl_framebuffer *)
119 _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
125 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
126 * gl_renderbuffer_attachment object.
128 struct gl_renderbuffer_attachment *
129 _mesa_get_attachment(GLcontext *ctx, struct gl_framebuffer *fb,
134 switch (attachment) {
135 case GL_COLOR_ATTACHMENT0_EXT:
136 case GL_COLOR_ATTACHMENT1_EXT:
137 case GL_COLOR_ATTACHMENT2_EXT:
138 case GL_COLOR_ATTACHMENT3_EXT:
139 case GL_COLOR_ATTACHMENT4_EXT:
140 case GL_COLOR_ATTACHMENT5_EXT:
141 case GL_COLOR_ATTACHMENT6_EXT:
142 case GL_COLOR_ATTACHMENT7_EXT:
143 case GL_COLOR_ATTACHMENT8_EXT:
144 case GL_COLOR_ATTACHMENT9_EXT:
145 case GL_COLOR_ATTACHMENT10_EXT:
146 case GL_COLOR_ATTACHMENT11_EXT:
147 case GL_COLOR_ATTACHMENT12_EXT:
148 case GL_COLOR_ATTACHMENT13_EXT:
149 case GL_COLOR_ATTACHMENT14_EXT:
150 case GL_COLOR_ATTACHMENT15_EXT:
151 i = attachment - GL_COLOR_ATTACHMENT0_EXT;
152 if (i >= ctx->Const.MaxColorAttachments) {
155 return &fb->Attachment[BUFFER_COLOR0 + i];
156 case GL_DEPTH_ATTACHMENT_EXT:
157 return &fb->Attachment[BUFFER_DEPTH];
158 case GL_STENCIL_ATTACHMENT_EXT:
159 return &fb->Attachment[BUFFER_STENCIL];
167 * Remove any texture or renderbuffer attached to the given attachment
168 * point. Update reference counts, etc.
171 _mesa_remove_attachment(GLcontext *ctx, struct gl_renderbuffer_attachment *att)
173 if (att->Type == GL_TEXTURE) {
174 ASSERT(att->Texture);
175 if (ctx->Driver.FinishRenderTexture) {
176 /* tell driver that we're done rendering to this texture. */
177 ctx->Driver.FinishRenderTexture(ctx, att);
179 _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
180 ASSERT(!att->Texture);
182 if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
183 ASSERT(!att->Texture);
184 _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
185 ASSERT(!att->Renderbuffer);
188 att->Complete = GL_TRUE;
193 * Bind a texture object to an attachment point.
194 * The previous binding, if any, will be removed first.
197 _mesa_set_texture_attachment(GLcontext *ctx,
198 struct gl_framebuffer *fb,
199 struct gl_renderbuffer_attachment *att,
200 struct gl_texture_object *texObj,
201 GLenum texTarget, GLuint level, GLuint zoffset)
203 if (att->Texture == texObj) {
204 /* re-attaching same texture */
205 ASSERT(att->Type == GL_TEXTURE);
209 _mesa_remove_attachment(ctx, att);
210 att->Type = GL_TEXTURE;
211 assert(!att->Texture);
212 _mesa_reference_texobj(&att->Texture, texObj);
215 /* always update these fields */
216 att->TextureLevel = level;
217 if (IS_CUBE_FACE(texTarget)) {
218 att->CubeMapFace = texTarget - GL_TEXTURE_CUBE_MAP_POSITIVE_X;
221 att->CubeMapFace = 0;
223 att->Zoffset = zoffset;
224 att->Complete = GL_FALSE;
226 if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) {
227 ctx->Driver.RenderTexture(ctx, fb, att);
233 * Bind a renderbuffer to an attachment point.
234 * The previous binding, if any, will be removed first.
237 _mesa_set_renderbuffer_attachment(GLcontext *ctx,
238 struct gl_renderbuffer_attachment *att,
239 struct gl_renderbuffer *rb)
241 /* XXX check if re-doing same attachment, exit early */
242 _mesa_remove_attachment(ctx, att);
243 att->Type = GL_RENDERBUFFER_EXT;
244 att->Texture = NULL; /* just to be safe */
245 att->Complete = GL_FALSE;
246 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
251 * Fallback for ctx->Driver.FramebufferRenderbuffer()
252 * Attach a renderbuffer object to a framebuffer object.
255 _mesa_framebuffer_renderbuffer(GLcontext *ctx, struct gl_framebuffer *fb,
256 GLenum attachment, struct gl_renderbuffer *rb)
258 struct gl_renderbuffer_attachment *att;
260 _glthread_LOCK_MUTEX(fb->Mutex);
262 att = _mesa_get_attachment(ctx, fb, attachment);
265 _mesa_set_renderbuffer_attachment(ctx, att, rb);
268 _mesa_remove_attachment(ctx, att);
271 _glthread_UNLOCK_MUTEX(fb->Mutex);
276 * Test if an attachment point is complete and update its Complete field.
277 * \param format if GL_COLOR, this is a color attachment point,
278 * if GL_DEPTH, this is a depth component attachment point,
279 * if GL_STENCIL, this is a stencil component attachment point.
282 test_attachment_completeness(const GLcontext *ctx, GLenum format,
283 struct gl_renderbuffer_attachment *att)
285 assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
287 /* assume complete */
288 att->Complete = GL_TRUE;
290 /* Look for reasons why the attachment might be incomplete */
291 if (att->Type == GL_TEXTURE) {
292 const struct gl_texture_object *texObj = att->Texture;
293 struct gl_texture_image *texImage;
296 att->Complete = GL_FALSE;
300 texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
302 att->Complete = GL_FALSE;
305 if (texImage->Width < 1 || texImage->Height < 1) {
306 att->Complete = GL_FALSE;
309 if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
310 att->Complete = GL_FALSE;
314 if (format == GL_COLOR) {
315 if (texImage->TexFormat->BaseFormat != GL_RGB &&
316 texImage->TexFormat->BaseFormat != GL_RGBA) {
317 att->Complete = GL_FALSE;
321 else if (format == GL_DEPTH) {
322 if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT) {
325 else if (ctx->Extensions.EXT_packed_depth_stencil &&
326 texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) {
330 att->Complete = GL_FALSE;
335 /* no such thing as stencil textures */
336 att->Complete = GL_FALSE;
340 else if (att->Type == GL_RENDERBUFFER_EXT) {
341 ASSERT(att->Renderbuffer);
342 if (!att->Renderbuffer->InternalFormat ||
343 att->Renderbuffer->Width < 1 ||
344 att->Renderbuffer->Height < 1) {
345 att->Complete = GL_FALSE;
348 if (format == GL_COLOR) {
349 if (att->Renderbuffer->_BaseFormat != GL_RGB &&
350 att->Renderbuffer->_BaseFormat != GL_RGBA) {
351 ASSERT(att->Renderbuffer->RedBits);
352 ASSERT(att->Renderbuffer->GreenBits);
353 ASSERT(att->Renderbuffer->BlueBits);
354 att->Complete = GL_FALSE;
358 else if (format == GL_DEPTH) {
359 ASSERT(att->Renderbuffer->DepthBits);
360 if (att->Renderbuffer->_BaseFormat == GL_DEPTH_COMPONENT) {
363 else if (ctx->Extensions.EXT_packed_depth_stencil &&
364 att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
368 att->Complete = GL_FALSE;
373 assert(format == GL_STENCIL);
374 ASSERT(att->Renderbuffer->StencilBits);
375 if (att->Renderbuffer->_BaseFormat == GL_STENCIL_INDEX) {
378 else if (ctx->Extensions.EXT_packed_depth_stencil &&
379 att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) {
383 att->Complete = GL_FALSE;
389 ASSERT(att->Type == GL_NONE);
397 * Helpful for debugging
400 fbo_incomplete(const char *msg, int index)
405 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
411 * Test if the given framebuffer object is complete and update its
412 * Status field with the results.
413 * Also update the framebuffer's Width and Height fields if the
414 * framebuffer is complete.
417 _mesa_test_framebuffer_completeness(GLcontext *ctx, struct gl_framebuffer *fb)
419 GLuint numImages, width = 0, height = 0;
420 GLenum intFormat = GL_NONE;
425 assert(fb->Name != 0);
431 /* Start at -2 to more easily loop over all attachment points */
432 for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
433 struct gl_renderbuffer_attachment *att;
437 att = &fb->Attachment[BUFFER_DEPTH];
438 test_attachment_completeness(ctx, GL_DEPTH, att);
439 if (!att->Complete) {
440 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
441 fbo_incomplete("depth attachment incomplete", -1);
446 att = &fb->Attachment[BUFFER_STENCIL];
447 test_attachment_completeness(ctx, GL_STENCIL, att);
448 if (!att->Complete) {
449 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
450 fbo_incomplete("stencil attachment incomplete", -1);
455 att = &fb->Attachment[BUFFER_COLOR0 + i];
456 test_attachment_completeness(ctx, GL_COLOR, att);
457 if (!att->Complete) {
458 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
459 fbo_incomplete("color attachment incomplete", i);
464 if (att->Type == GL_TEXTURE) {
465 const struct gl_texture_image *texImg
466 = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
469 f = texImg->_BaseFormat;
471 if (f != GL_RGB && f != GL_RGBA && f != GL_DEPTH_COMPONENT
472 && f != GL_DEPTH_STENCIL_EXT) {
473 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
474 fbo_incomplete("texture attachment incomplete", -1);
478 else if (att->Type == GL_RENDERBUFFER_EXT) {
479 w = att->Renderbuffer->Width;
480 h = att->Renderbuffer->Height;
481 f = att->Renderbuffer->InternalFormat;
485 assert(att->Type == GL_NONE);
489 if (numImages == 1) {
490 /* set required width, height and format */
497 /* check that width, height, format are same */
498 if (w != width || h != height) {
499 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
500 fbo_incomplete("width or height mismatch", -1);
503 if (intFormat != GL_NONE && f != intFormat) {
504 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
505 fbo_incomplete("format mismatch", -1);
511 #ifndef FEATURE_OES_framebuffer_object
512 /* Check that all DrawBuffers are present */
513 for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
514 if (fb->ColorDrawBuffer[j] != GL_NONE) {
515 const struct gl_renderbuffer_attachment *att
516 = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
518 if (att->Type == GL_NONE) {
519 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
520 fbo_incomplete("missing drawbuffer", j);
526 /* Check that the ReadBuffer is present */
527 if (fb->ColorReadBuffer != GL_NONE) {
528 const struct gl_renderbuffer_attachment *att
529 = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
531 if (att->Type == GL_NONE) {
532 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
533 fbo_incomplete("missing readbuffer", -1);
539 if (numImages == 0) {
540 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
541 fbo_incomplete("no attachments", -1);
546 * If we get here, the framebuffer is complete!
548 fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
555 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
557 GET_CURRENT_CONTEXT(ctx);
558 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
560 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
561 if (rb != NULL && rb != &DummyRenderbuffer)
569 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
571 struct gl_renderbuffer *newRb;
572 GET_CURRENT_CONTEXT(ctx);
574 ASSERT_OUTSIDE_BEGIN_END(ctx);
576 if (target != GL_RENDERBUFFER_EXT) {
577 _mesa_error(ctx, GL_INVALID_ENUM,
578 "glBindRenderbufferEXT(target)");
582 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
583 /* The above doesn't fully flush the drivers in the way that a
584 * glFlush does, but that is required here:
586 if (ctx->Driver.Flush)
587 ctx->Driver.Flush(ctx);
591 newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
592 if (newRb == &DummyRenderbuffer) {
593 /* ID was reserved, but no real renderbuffer object made yet */
597 /* create new renderbuffer object */
598 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
600 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
603 ASSERT(newRb->AllocStorage);
604 _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
605 newRb->RefCount = 1; /* referenced by hash table */
612 ASSERT(newRb != &DummyRenderbuffer);
614 _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
619 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
622 GET_CURRENT_CONTEXT(ctx);
624 ASSERT_OUTSIDE_BEGIN_END(ctx);
625 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
627 for (i = 0; i < n; i++) {
628 if (renderbuffers[i] > 0) {
629 struct gl_renderbuffer *rb;
630 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
632 /* check if deleting currently bound renderbuffer object */
633 if (rb == ctx->CurrentRenderbuffer) {
635 ASSERT(rb->RefCount >= 2);
636 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
639 /* Remove from hash table immediately, to free the ID.
640 * But the object will not be freed until it's no longer
641 * referenced anywhere else.
643 _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
645 if (rb != &DummyRenderbuffer) {
646 /* no longer referenced by hash table */
647 _mesa_reference_renderbuffer(&rb, NULL);
656 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
658 GET_CURRENT_CONTEXT(ctx);
662 ASSERT_OUTSIDE_BEGIN_END(ctx);
665 _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
672 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
674 for (i = 0; i < n; i++) {
675 GLuint name = first + i;
676 renderbuffers[i] = name;
677 /* insert dummy placeholder into hash table */
678 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
679 _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
680 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
686 * Given an internal format token for a render buffer, return the
687 * corresponding base format.
688 * This is very similar to _mesa_base_tex_format() but the set of valid
689 * internal formats is somewhat different.
691 * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
692 * GL_DEPTH_STENCIL_EXT or zero if error.
695 _mesa_base_fbo_format(GLcontext *ctx, GLenum internalFormat)
697 switch (internalFormat) {
716 case GL_STENCIL_INDEX:
717 case GL_STENCIL_INDEX1_EXT:
718 case GL_STENCIL_INDEX4_EXT:
719 case GL_STENCIL_INDEX8_EXT:
720 case GL_STENCIL_INDEX16_EXT:
721 return GL_STENCIL_INDEX;
722 case GL_DEPTH_COMPONENT:
723 case GL_DEPTH_COMPONENT16:
724 case GL_DEPTH_COMPONENT24:
725 case GL_DEPTH_COMPONENT32:
726 return GL_DEPTH_COMPONENT;
727 case GL_DEPTH_STENCIL_EXT:
728 case GL_DEPTH24_STENCIL8_EXT:
729 if (ctx->Extensions.EXT_packed_depth_stencil)
730 return GL_DEPTH_STENCIL_EXT;
733 /* XXX add floating point formats eventually */
741 _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
742 GLsizei width, GLsizei height)
744 struct gl_renderbuffer *rb;
746 GET_CURRENT_CONTEXT(ctx);
748 ASSERT_OUTSIDE_BEGIN_END(ctx);
750 if (target != GL_RENDERBUFFER_EXT) {
751 _mesa_error(ctx, GL_INVALID_ENUM, "glRenderbufferStorageEXT(target)");
755 baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
756 if (baseFormat == 0) {
757 _mesa_error(ctx, GL_INVALID_ENUM,
758 "glRenderbufferStorageEXT(internalFormat)");
762 if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
763 _mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(width)");
767 if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
768 _mesa_error(ctx, GL_INVALID_VALUE, "glRenderbufferStorageEXT(height)");
772 rb = ctx->CurrentRenderbuffer;
775 _mesa_error(ctx, GL_INVALID_OPERATION, "glRenderbufferStorageEXT");
779 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
781 if (rb->InternalFormat == internalFormat &&
782 rb->Width == (GLuint) width &&
783 rb->Height == (GLuint) height) {
784 /* no change in allocation needed */
788 /* These MUST get set by the AllocStorage func */
789 rb->_ActualFormat = 0;
798 /* Now allocate the storage */
799 ASSERT(rb->AllocStorage);
800 if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
801 /* No error - check/set fields now */
802 assert(rb->_ActualFormat);
803 assert(rb->Width == (GLuint) width);
804 assert(rb->Height == (GLuint) height);
805 assert(rb->RedBits || rb->GreenBits || rb->BlueBits || rb->AlphaBits ||
806 rb->DepthBits || rb->StencilBits || rb->IndexBits);
807 rb->InternalFormat = internalFormat;
808 rb->_BaseFormat = baseFormat;
811 /* Probably ran out of memory - clear the fields */
814 rb->InternalFormat = GL_NONE;
815 rb->_ActualFormat = GL_NONE;
816 rb->_BaseFormat = GL_NONE;
827 test_framebuffer_completeness(ctx, fb);
829 /* XXX if this renderbuffer is attached anywhere, invalidate attachment
836 _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
838 GET_CURRENT_CONTEXT(ctx);
840 ASSERT_OUTSIDE_BEGIN_END(ctx);
842 if (target != GL_RENDERBUFFER_EXT) {
843 _mesa_error(ctx, GL_INVALID_ENUM,
844 "glGetRenderbufferParameterivEXT(target)");
848 if (!ctx->CurrentRenderbuffer) {
849 _mesa_error(ctx, GL_INVALID_OPERATION,
850 "glGetRenderbufferParameterivEXT");
854 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
857 case GL_RENDERBUFFER_WIDTH_EXT:
858 *params = ctx->CurrentRenderbuffer->Width;
860 case GL_RENDERBUFFER_HEIGHT_EXT:
861 *params = ctx->CurrentRenderbuffer->Height;
863 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
864 *params = ctx->CurrentRenderbuffer->InternalFormat;
866 case GL_RENDERBUFFER_RED_SIZE_EXT:
867 *params = ctx->CurrentRenderbuffer->RedBits;
869 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
870 *params = ctx->CurrentRenderbuffer->GreenBits;
872 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
873 *params = ctx->CurrentRenderbuffer->BlueBits;
875 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
876 *params = ctx->CurrentRenderbuffer->AlphaBits;
878 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
879 *params = ctx->CurrentRenderbuffer->DepthBits;
881 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
882 *params = ctx->CurrentRenderbuffer->StencilBits;
885 _mesa_error(ctx, GL_INVALID_ENUM,
886 "glGetRenderbufferParameterivEXT(target)");
893 _mesa_IsFramebufferEXT(GLuint framebuffer)
895 GET_CURRENT_CONTEXT(ctx);
896 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
898 struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
899 if (rb != NULL && rb != &DummyFramebuffer)
907 check_begin_texture_render(GLcontext *ctx, struct gl_framebuffer *fb)
910 ASSERT(ctx->Driver.RenderTexture);
911 for (i = 0; i < BUFFER_COUNT; i++) {
912 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
913 struct gl_texture_object *texObj = att->Texture;
915 && att->Texture->Image[att->CubeMapFace][att->TextureLevel]) {
916 ctx->Driver.RenderTexture(ctx, fb, att);
923 * Examine all the framebuffer's attachments to see if any are textures.
924 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
925 * notify the device driver that the texture image may have changed.
928 check_end_texture_render(GLcontext *ctx, struct gl_framebuffer *fb)
930 if (ctx->Driver.FinishRenderTexture) {
932 for (i = 0; i < BUFFER_COUNT; i++) {
933 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
934 if (att->Texture && att->Renderbuffer) {
935 ctx->Driver.FinishRenderTexture(ctx, att);
943 _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
945 struct gl_framebuffer *newFb, *newFbread;
946 GLboolean bindReadBuf, bindDrawBuf;
947 GET_CURRENT_CONTEXT(ctx);
949 ASSERT_OUTSIDE_BEGIN_END(ctx);
951 if (!ctx->Extensions.EXT_framebuffer_object) {
952 _mesa_error(ctx, GL_INVALID_OPERATION,
953 "glBindFramebufferEXT(unsupported)");
958 #if FEATURE_EXT_framebuffer_blit
959 case GL_DRAW_FRAMEBUFFER_EXT:
960 if (!ctx->Extensions.EXT_framebuffer_blit) {
961 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
964 bindDrawBuf = GL_TRUE;
965 bindReadBuf = GL_FALSE;
967 case GL_READ_FRAMEBUFFER_EXT:
968 if (!ctx->Extensions.EXT_framebuffer_blit) {
969 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
972 bindDrawBuf = GL_FALSE;
973 bindReadBuf = GL_TRUE;
976 case GL_FRAMEBUFFER_EXT:
977 bindDrawBuf = GL_TRUE;
978 bindReadBuf = GL_TRUE;
981 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
985 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
987 if (ctx->Driver.Flush) {
988 ctx->Driver.Flush(ctx);
992 /* Binding a user-created framebuffer object */
993 newFb = _mesa_lookup_framebuffer(ctx, framebuffer);
994 if (newFb == &DummyFramebuffer) {
995 /* ID was reserved, but no real framebuffer object made yet */
999 /* create new framebuffer object */
1000 newFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
1002 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
1005 _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newFb);
1010 /* Binding the window system framebuffer (which was originally set
1011 * with MakeCurrent).
1013 newFb = ctx->WinSysDrawBuffer;
1014 newFbread = ctx->WinSysReadBuffer;
1018 ASSERT(newFb != &DummyFramebuffer);
1021 * XXX check if re-binding same buffer and skip some of this code.
1025 _mesa_reference_framebuffer(&ctx->ReadBuffer, newFbread);
1029 /* check if old FB had any texture attachments */
1030 check_end_texture_render(ctx, ctx->DrawBuffer);
1032 /* check if time to delete this framebuffer */
1033 _mesa_reference_framebuffer(&ctx->DrawBuffer, newFb);
1035 if (newFb->Name != 0) {
1036 /* check if newly bound framebuffer has any texture attachments */
1037 check_begin_texture_render(ctx, newFb);
1041 if (ctx->Driver.BindFramebuffer) {
1042 ctx->Driver.BindFramebuffer(ctx, target, newFb, newFbread);
1048 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1051 GET_CURRENT_CONTEXT(ctx);
1053 ASSERT_OUTSIDE_BEGIN_END(ctx);
1054 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1055 /* The above doesn't fully flush the drivers in the way that a
1056 * glFlush does, but that is required here:
1058 if (ctx->Driver.Flush)
1059 ctx->Driver.Flush(ctx);
1061 for (i = 0; i < n; i++) {
1062 if (framebuffers[i] > 0) {
1063 struct gl_framebuffer *fb;
1064 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1066 ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1068 /* check if deleting currently bound framebuffer object */
1069 if (fb == ctx->DrawBuffer) {
1071 ASSERT(fb->RefCount >= 2);
1072 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1075 /* remove from hash table immediately, to free the ID */
1076 _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1078 if (fb != &DummyFramebuffer) {
1079 /* But the object will not be freed until it's no longer
1080 * bound in any context.
1082 _mesa_unreference_framebuffer(&fb);
1091 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1093 GET_CURRENT_CONTEXT(ctx);
1097 ASSERT_OUTSIDE_BEGIN_END(ctx);
1100 _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1107 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1109 for (i = 0; i < n; i++) {
1110 GLuint name = first + i;
1111 framebuffers[i] = name;
1112 /* insert dummy placeholder into hash table */
1113 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1114 _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1115 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1122 _mesa_CheckFramebufferStatusEXT(GLenum target)
1124 struct gl_framebuffer *buffer;
1125 GET_CURRENT_CONTEXT(ctx);
1127 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1130 #if FEATURE_EXT_framebuffer_blit
1131 case GL_DRAW_FRAMEBUFFER_EXT:
1132 if (!ctx->Extensions.EXT_framebuffer_blit) {
1133 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1136 buffer = ctx->DrawBuffer;
1138 case GL_READ_FRAMEBUFFER_EXT:
1139 if (!ctx->Extensions.EXT_framebuffer_blit) {
1140 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1143 buffer = ctx->ReadBuffer;
1146 case GL_FRAMEBUFFER_EXT:
1147 buffer = ctx->DrawBuffer;
1150 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1151 return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */
1154 if (buffer->Name == 0) {
1155 /* The window system / default framebuffer is always complete */
1156 return GL_FRAMEBUFFER_COMPLETE_EXT;
1159 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1161 _mesa_test_framebuffer_completeness(ctx, buffer);
1162 return buffer->_Status;
1168 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1171 framebuffer_texture(GLcontext *ctx, const char *caller, GLenum target,
1172 GLenum attachment, GLenum textarget, GLuint texture,
1173 GLint level, GLint zoffset)
1175 struct gl_renderbuffer_attachment *att;
1176 struct gl_texture_object *texObj = NULL;
1177 struct gl_framebuffer *fb;
1179 ASSERT_OUTSIDE_BEGIN_END(ctx);
1181 if (target != GL_FRAMEBUFFER_EXT) {
1182 _mesa_error(ctx, GL_INVALID_ENUM,
1183 "glFramebufferTexture%sEXT(target)", caller);
1187 fb = ctx->DrawBuffer;
1190 /* check framebuffer binding */
1191 if (fb->Name == 0) {
1192 _mesa_error(ctx, GL_INVALID_OPERATION,
1193 "glFramebufferTexture%sEXT", caller);
1198 /* The textarget, level, and zoffset parameters are only validated if
1199 * texture is non-zero.
1202 GLboolean err = GL_TRUE;
1204 texObj = _mesa_lookup_texture(ctx, texture);
1205 if (texObj != NULL) {
1206 if (textarget == 0) {
1207 err = (texObj->Target != GL_TEXTURE_3D) &&
1208 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1209 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
1212 err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
1213 ? !IS_CUBE_FACE(textarget)
1214 : (texObj->Target != textarget);
1219 _mesa_error(ctx, GL_INVALID_OPERATION,
1220 "glFramebufferTexture%sEXT(texture target mismatch)",
1225 if (texObj->Target == GL_TEXTURE_3D) {
1226 const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1227 if (zoffset < 0 || zoffset >= maxSize) {
1228 _mesa_error(ctx, GL_INVALID_VALUE,
1229 "glFramebufferTexture%sEXT(zoffset)", caller);
1233 else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
1234 (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
1235 if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
1236 _mesa_error(ctx, GL_INVALID_VALUE,
1237 "glFramebufferTexture%sEXT(layer)", caller);
1244 (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
1245 _mesa_error(ctx, GL_INVALID_VALUE,
1246 "glFramebufferTexture%sEXT(level)", caller);
1251 att = _mesa_get_attachment(ctx, fb, attachment);
1253 _mesa_error(ctx, GL_INVALID_ENUM,
1254 "glFramebufferTexture%sEXT(attachment)", caller);
1258 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1259 /* The above doesn't fully flush the drivers in the way that a
1260 * glFlush does, but that is required here:
1262 if (ctx->Driver.Flush)
1263 ctx->Driver.Flush(ctx);
1265 _glthread_LOCK_MUTEX(fb->Mutex);
1267 _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
1271 _mesa_remove_attachment(ctx, att);
1273 _glthread_UNLOCK_MUTEX(fb->Mutex);
1279 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
1280 GLenum textarget, GLuint texture, GLint level)
1282 GET_CURRENT_CONTEXT(ctx);
1284 if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
1285 _mesa_error(ctx, GL_INVALID_ENUM,
1286 "glFramebufferTexture1DEXT(textarget)");
1290 framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
1296 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
1297 GLenum textarget, GLuint texture, GLint level)
1299 GET_CURRENT_CONTEXT(ctx);
1301 if ((texture != 0) &&
1302 (textarget != GL_TEXTURE_2D) &&
1303 (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
1304 (!IS_CUBE_FACE(textarget))) {
1305 _mesa_error(ctx, GL_INVALID_OPERATION,
1306 "glFramebufferTexture2DEXT(textarget)");
1310 framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
1316 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
1317 GLenum textarget, GLuint texture,
1318 GLint level, GLint zoffset)
1320 GET_CURRENT_CONTEXT(ctx);
1322 if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
1323 _mesa_error(ctx, GL_INVALID_ENUM,
1324 "glFramebufferTexture3DEXT(textarget)");
1328 framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
1334 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
1335 GLuint texture, GLint level, GLint layer)
1337 GET_CURRENT_CONTEXT(ctx);
1339 framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
1345 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
1346 GLenum renderbufferTarget,
1347 GLuint renderbuffer)
1349 struct gl_renderbuffer_attachment *att;
1350 struct gl_framebuffer *fb;
1351 struct gl_renderbuffer *rb;
1352 GET_CURRENT_CONTEXT(ctx);
1354 ASSERT_OUTSIDE_BEGIN_END(ctx);
1357 #if FEATURE_EXT_framebuffer_blit
1358 case GL_DRAW_FRAMEBUFFER_EXT:
1359 if (!ctx->Extensions.EXT_framebuffer_blit) {
1360 _mesa_error(ctx, GL_INVALID_ENUM,
1361 "glFramebufferRenderbufferEXT(target)");
1364 fb = ctx->DrawBuffer;
1366 case GL_READ_FRAMEBUFFER_EXT:
1367 if (!ctx->Extensions.EXT_framebuffer_blit) {
1368 _mesa_error(ctx, GL_INVALID_ENUM,
1369 "glFramebufferRenderbufferEXT(target)");
1372 fb = ctx->ReadBuffer;
1375 case GL_FRAMEBUFFER_EXT:
1376 fb = ctx->DrawBuffer;
1379 _mesa_error(ctx, GL_INVALID_ENUM,
1380 "glFramebufferRenderbufferEXT(target)");
1384 if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
1385 _mesa_error(ctx, GL_INVALID_ENUM,
1386 "glFramebufferRenderbufferEXT(renderbufferTarget)");
1390 if (fb->Name == 0) {
1391 /* Can't attach new renderbuffers to a window system framebuffer */
1392 _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
1396 att = _mesa_get_attachment(ctx, fb, attachment);
1398 _mesa_error(ctx, GL_INVALID_ENUM,
1399 "glFramebufferRenderbufferEXT(attachment)");
1404 rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
1406 _mesa_error(ctx, GL_INVALID_OPERATION,
1407 "glFramebufferRenderbufferEXT(renderbuffer)");
1412 /* remove renderbuffer attachment */
1416 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1417 /* The above doesn't fully flush the drivers in the way that a
1418 * glFlush does, but that is required here:
1420 if (ctx->Driver.Flush)
1421 ctx->Driver.Flush(ctx);
1423 assert(ctx->Driver.FramebufferRenderbuffer);
1424 ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
1426 /* Some subsequent GL commands may depend on the framebuffer's visual
1427 * after the binding is updated. Update visual info now.
1429 _mesa_update_framebuffer_visual(fb);
1434 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
1435 GLenum pname, GLint *params)
1437 const struct gl_renderbuffer_attachment *att;
1438 struct gl_framebuffer *buffer;
1439 GET_CURRENT_CONTEXT(ctx);
1441 ASSERT_OUTSIDE_BEGIN_END(ctx);
1444 #if FEATURE_EXT_framebuffer_blit
1445 case GL_DRAW_FRAMEBUFFER_EXT:
1446 if (!ctx->Extensions.EXT_framebuffer_blit) {
1447 _mesa_error(ctx, GL_INVALID_ENUM,
1448 "glGetFramebufferAttachmentParameterivEXT(target)");
1451 buffer = ctx->DrawBuffer;
1453 case GL_READ_FRAMEBUFFER_EXT:
1454 if (!ctx->Extensions.EXT_framebuffer_blit) {
1455 _mesa_error(ctx, GL_INVALID_ENUM,
1456 "glGetFramebufferAttachmentParameterivEXT(target)");
1459 buffer = ctx->ReadBuffer;
1462 case GL_FRAMEBUFFER_EXT:
1463 buffer = ctx->DrawBuffer;
1466 _mesa_error(ctx, GL_INVALID_ENUM,
1467 "glGetFramebufferAttachmentParameterivEXT(target)");
1471 if (buffer->Name == 0) {
1472 _mesa_error(ctx, GL_INVALID_OPERATION,
1473 "glGetFramebufferAttachmentParameterivEXT");
1477 att = _mesa_get_attachment(ctx, buffer, attachment);
1479 _mesa_error(ctx, GL_INVALID_ENUM,
1480 "glGetFramebufferAttachmentParameterivEXT(attachment)");
1484 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1485 /* The above doesn't fully flush the drivers in the way that a
1486 * glFlush does, but that is required here:
1488 if (ctx->Driver.Flush)
1489 ctx->Driver.Flush(ctx);
1492 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
1493 *params = att->Type;
1495 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
1496 if (att->Type == GL_RENDERBUFFER_EXT) {
1497 *params = att->Renderbuffer->Name;
1499 else if (att->Type == GL_TEXTURE) {
1500 *params = att->Texture->Name;
1503 _mesa_error(ctx, GL_INVALID_ENUM,
1504 "glGetFramebufferAttachmentParameterivEXT(pname)");
1507 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
1508 if (att->Type == GL_TEXTURE) {
1509 *params = att->TextureLevel;
1512 _mesa_error(ctx, GL_INVALID_ENUM,
1513 "glGetFramebufferAttachmentParameterivEXT(pname)");
1516 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
1517 if (att->Type == GL_TEXTURE) {
1518 if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
1519 *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
1526 _mesa_error(ctx, GL_INVALID_ENUM,
1527 "glGetFramebufferAttachmentParameterivEXT(pname)");
1530 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
1531 if (att->Type == GL_TEXTURE) {
1532 if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
1533 *params = att->Zoffset;
1540 _mesa_error(ctx, GL_INVALID_ENUM,
1541 "glGetFramebufferAttachmentParameterivEXT(pname)");
1545 _mesa_error(ctx, GL_INVALID_ENUM,
1546 "glGetFramebufferAttachmentParameterivEXT(pname)");
1553 _mesa_GenerateMipmapEXT(GLenum target)
1555 struct gl_texture_unit *texUnit;
1556 struct gl_texture_object *texObj;
1557 GET_CURRENT_CONTEXT(ctx);
1559 ASSERT_OUTSIDE_BEGIN_END(ctx);
1560 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1566 case GL_TEXTURE_CUBE_MAP:
1567 /* OK, legal value */
1570 _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
1574 texUnit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1575 texObj = _mesa_select_tex_object(ctx, texUnit, target);
1577 /* XXX this might not handle cube maps correctly */
1578 _mesa_lock_texture(ctx, texObj);
1579 ctx->Driver.GenerateMipmap(ctx, target, texObj);
1580 _mesa_unlock_texture(ctx, texObj);
1584 #if FEATURE_EXT_framebuffer_blit
1586 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
1587 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
1588 GLbitfield mask, GLenum filter)
1590 GET_CURRENT_CONTEXT(ctx);
1592 ASSERT_OUTSIDE_BEGIN_END(ctx);
1593 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1595 if (ctx->NewState) {
1596 _mesa_update_state(ctx);
1599 if (!ctx->ReadBuffer) {
1603 /* check for complete framebuffers */
1604 if (ctx->DrawBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
1605 ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
1606 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
1607 "glBlitFramebufferEXT(incomplete draw/read buffers)");
1611 if (filter != GL_NEAREST && filter != GL_LINEAR) {
1612 _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
1616 if (mask & ~(GL_COLOR_BUFFER_BIT |
1617 GL_DEPTH_BUFFER_BIT |
1618 GL_STENCIL_BUFFER_BIT)) {
1619 _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
1623 /* depth/stencil must be blitted with nearest filtering */
1624 if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
1625 && filter != GL_NEAREST) {
1626 _mesa_error(ctx, GL_INVALID_OPERATION,
1627 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
1631 if (mask & GL_STENCIL_BUFFER_BIT) {
1632 struct gl_renderbuffer *readRb = ctx->ReadBuffer->_StencilBuffer;
1633 struct gl_renderbuffer *drawRb = ctx->DrawBuffer->_StencilBuffer;
1634 if (readRb->StencilBits != drawRb->StencilBits) {
1635 _mesa_error(ctx, GL_INVALID_OPERATION,
1636 "glBlitFramebufferEXT(stencil buffer size mismatch");
1641 if (mask & GL_DEPTH_BUFFER_BIT) {
1642 struct gl_renderbuffer *readRb = ctx->ReadBuffer->_DepthBuffer;
1643 struct gl_renderbuffer *drawRb = ctx->DrawBuffer->_DepthBuffer;
1644 if (readRb->DepthBits != drawRb->DepthBits) {
1645 _mesa_error(ctx, GL_INVALID_OPERATION,
1646 "glBlitFramebufferEXT(depth buffer size mismatch");
1651 if (!ctx->Extensions.EXT_framebuffer_blit) {
1652 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
1656 ASSERT(ctx->Driver.BlitFramebuffer);
1657 ctx->Driver.BlitFramebuffer(ctx,
1658 srcX0, srcY0, srcX1, srcY1,
1659 dstX0, dstY0, dstX1, dstY1,
1662 #endif /* FEATURE_EXT_framebuffer_blit */