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"
44 #include "mfeatures.h"
46 #include "renderbuffer.h"
52 /** Set this to 1 to help debug FBO incompleteness problems */
55 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
62 * None of the GL_EXT_framebuffer_object functions are compiled into
69 * When glGenRender/FramebuffersEXT() is called we insert pointers to
70 * these placeholder objects into the hash table.
71 * Later, when the object ID is first bound, we replace the placeholder
72 * with the real frame/renderbuffer.
74 static struct gl_framebuffer DummyFramebuffer;
75 static struct gl_renderbuffer DummyRenderbuffer;
77 /* We bind this framebuffer when applications pass a NULL
78 * drawable/surface in make current. */
79 static struct gl_framebuffer IncompleteFramebuffer;
83 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
89 delete_dummy_framebuffer(struct gl_framebuffer *fb)
96 _mesa_init_fbobjects(struct gl_context *ctx)
98 _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
99 _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
100 _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
101 DummyFramebuffer.Delete = delete_dummy_framebuffer;
102 DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
103 IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
106 struct gl_framebuffer *
107 _mesa_get_incomplete_framebuffer(void)
109 return &IncompleteFramebuffer;
113 * Helper routine for getting a gl_renderbuffer.
115 struct gl_renderbuffer *
116 _mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
118 struct gl_renderbuffer *rb;
123 rb = (struct gl_renderbuffer *)
124 _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
130 * Helper routine for getting a gl_framebuffer.
132 struct gl_framebuffer *
133 _mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
135 struct gl_framebuffer *fb;
140 fb = (struct gl_framebuffer *)
141 _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
147 * Mark the given framebuffer as invalid. This will force the
148 * test for framebuffer completeness to be done before the framebuffer
152 invalidate_framebuffer(struct gl_framebuffer *fb)
154 fb->_Status = 0; /* "indeterminate" */
159 * Return the gl_framebuffer object which corresponds to the given
160 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
161 * Check support for GL_EXT_framebuffer_blit to determine if certain
163 * \return gl_framebuffer pointer or NULL if target is illegal
165 static struct gl_framebuffer *
166 get_framebuffer_target(struct gl_context *ctx, GLenum target)
169 case GL_DRAW_FRAMEBUFFER:
170 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
171 ? ctx->DrawBuffer : NULL;
172 case GL_READ_FRAMEBUFFER:
173 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
174 ? ctx->ReadBuffer : NULL;
175 case GL_FRAMEBUFFER_EXT:
176 return ctx->DrawBuffer;
184 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
185 * gl_renderbuffer_attachment object.
186 * This function is only used for user-created FB objects, not the
187 * default / window-system FB object.
188 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
189 * the depth buffer attachment point.
191 struct gl_renderbuffer_attachment *
192 _mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
197 assert(_mesa_is_user_fbo(fb));
199 switch (attachment) {
200 case GL_COLOR_ATTACHMENT0_EXT:
201 case GL_COLOR_ATTACHMENT1_EXT:
202 case GL_COLOR_ATTACHMENT2_EXT:
203 case GL_COLOR_ATTACHMENT3_EXT:
204 case GL_COLOR_ATTACHMENT4_EXT:
205 case GL_COLOR_ATTACHMENT5_EXT:
206 case GL_COLOR_ATTACHMENT6_EXT:
207 case GL_COLOR_ATTACHMENT7_EXT:
208 case GL_COLOR_ATTACHMENT8_EXT:
209 case GL_COLOR_ATTACHMENT9_EXT:
210 case GL_COLOR_ATTACHMENT10_EXT:
211 case GL_COLOR_ATTACHMENT11_EXT:
212 case GL_COLOR_ATTACHMENT12_EXT:
213 case GL_COLOR_ATTACHMENT13_EXT:
214 case GL_COLOR_ATTACHMENT14_EXT:
215 case GL_COLOR_ATTACHMENT15_EXT:
216 /* Only OpenGL ES 1.x forbids color attachments other than
217 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
220 i = attachment - GL_COLOR_ATTACHMENT0_EXT;
221 if (i >= ctx->Const.MaxColorAttachments
222 || (i > 0 && ctx->API == API_OPENGLES)) {
225 return &fb->Attachment[BUFFER_COLOR0 + i];
226 case GL_DEPTH_STENCIL_ATTACHMENT:
227 if (ctx->API != API_OPENGL)
230 case GL_DEPTH_ATTACHMENT_EXT:
231 return &fb->Attachment[BUFFER_DEPTH];
232 case GL_STENCIL_ATTACHMENT_EXT:
233 return &fb->Attachment[BUFFER_STENCIL];
241 * As above, but only used for getting attachments of the default /
242 * window-system framebuffer (not user-created framebuffer objects).
244 static struct gl_renderbuffer_attachment *
245 _mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
248 assert(_mesa_is_winsys_fbo(fb));
250 switch (attachment) {
252 return &fb->Attachment[BUFFER_FRONT_LEFT];
254 return &fb->Attachment[BUFFER_FRONT_RIGHT];
256 return &fb->Attachment[BUFFER_BACK_LEFT];
258 return &fb->Attachment[BUFFER_BACK_RIGHT];
260 if (fb->Visual.numAuxBuffers == 1) {
261 return &fb->Attachment[BUFFER_AUX0];
265 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
267 * "If the default framebuffer is bound to target, then attachment must
268 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
269 * identifying a color buffer; DEPTH, identifying the depth buffer; or
270 * STENCIL, identifying the stencil buffer."
272 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
273 * language. However, revision #33 of the ARB_framebuffer_object spec
276 * "If the default framebuffer is bound to <target>, then <attachment>
277 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
278 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
279 * depth buffer, or the stencil buffer, and <pname> may be
280 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
281 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
283 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
284 * from glext.h, so shipping apps should not use those values.
286 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
287 * support queries of the window system FBO.
290 return &fb->Attachment[BUFFER_DEPTH];
292 return &fb->Attachment[BUFFER_STENCIL];
301 * Remove any texture or renderbuffer attached to the given attachment
302 * point. Update reference counts, etc.
305 _mesa_remove_attachment(struct gl_context *ctx,
306 struct gl_renderbuffer_attachment *att)
308 if (att->Type == GL_TEXTURE) {
309 ASSERT(att->Texture);
310 if (ctx->Driver.FinishRenderTexture) {
311 /* tell driver that we're done rendering to this texture. */
312 ctx->Driver.FinishRenderTexture(ctx, att);
314 _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
315 ASSERT(!att->Texture);
317 if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
318 ASSERT(!att->Texture);
319 _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
320 ASSERT(!att->Renderbuffer);
323 att->Complete = GL_TRUE;
328 * Bind a texture object to an attachment point.
329 * The previous binding, if any, will be removed first.
332 _mesa_set_texture_attachment(struct gl_context *ctx,
333 struct gl_framebuffer *fb,
334 struct gl_renderbuffer_attachment *att,
335 struct gl_texture_object *texObj,
336 GLenum texTarget, GLuint level, GLuint zoffset)
338 if (att->Texture == texObj) {
339 /* re-attaching same texture */
340 ASSERT(att->Type == GL_TEXTURE);
341 if (ctx->Driver.FinishRenderTexture)
342 ctx->Driver.FinishRenderTexture(ctx, att);
346 if (ctx->Driver.FinishRenderTexture && att->Texture)
347 ctx->Driver.FinishRenderTexture(ctx, att);
348 _mesa_remove_attachment(ctx, att);
349 att->Type = GL_TEXTURE;
350 assert(!att->Texture);
351 _mesa_reference_texobj(&att->Texture, texObj);
354 /* always update these fields */
355 att->TextureLevel = level;
356 att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
357 att->Zoffset = zoffset;
358 att->Complete = GL_FALSE;
360 if (_mesa_get_attachment_teximage(att)) {
361 ctx->Driver.RenderTexture(ctx, fb, att);
364 invalidate_framebuffer(fb);
369 * Bind a renderbuffer to an attachment point.
370 * The previous binding, if any, will be removed first.
373 _mesa_set_renderbuffer_attachment(struct gl_context *ctx,
374 struct gl_renderbuffer_attachment *att,
375 struct gl_renderbuffer *rb)
377 /* XXX check if re-doing same attachment, exit early */
378 _mesa_remove_attachment(ctx, att);
379 att->Type = GL_RENDERBUFFER_EXT;
380 att->Texture = NULL; /* just to be safe */
381 att->Complete = GL_FALSE;
382 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
387 * Fallback for ctx->Driver.FramebufferRenderbuffer()
388 * Attach a renderbuffer object to a framebuffer object.
391 _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
392 struct gl_framebuffer *fb,
393 GLenum attachment, struct gl_renderbuffer *rb)
395 struct gl_renderbuffer_attachment *att;
397 _glthread_LOCK_MUTEX(fb->Mutex);
399 att = _mesa_get_attachment(ctx, fb, attachment);
402 _mesa_set_renderbuffer_attachment(ctx, att, rb);
403 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
404 /* do stencil attachment here (depth already done above) */
405 att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
407 _mesa_set_renderbuffer_attachment(ctx, att, rb);
409 rb->AttachedAnytime = GL_TRUE;
412 _mesa_remove_attachment(ctx, att);
415 invalidate_framebuffer(fb);
417 _glthread_UNLOCK_MUTEX(fb->Mutex);
422 * Fallback for ctx->Driver.ValidateFramebuffer()
423 * Check if the renderbuffer's formats are supported by the software
425 * Drivers should probably override this.
428 _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
431 for (buf = 0; buf < BUFFER_COUNT; buf++) {
432 const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
434 switch (rb->_BaseFormat) {
436 case GL_LUMINANCE_ALPHA:
441 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
445 switch (rb->Format) {
446 /* XXX This list is likely incomplete. */
447 case MESA_FORMAT_RGB9_E5_FLOAT:
448 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
451 /* render buffer format is supported by software rendering */
463 att_incomplete(const char *msg)
466 _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
477 fbo_incomplete(const char *msg, int index)
480 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
489 * Is the given base format a legal format for a color renderbuffer?
492 _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
494 switch (baseFormat) {
499 case GL_LUMINANCE_ALPHA:
502 return ctx->Extensions.ARB_framebuffer_object;
505 return ctx->Extensions.ARB_texture_rg;
513 * Is the given base format a legal format for a depth/stencil renderbuffer?
516 is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
518 switch (baseFormat) {
519 case GL_DEPTH_COMPONENT:
520 case GL_DEPTH_STENCIL_EXT:
529 * Test if an attachment point is complete and update its Complete field.
530 * \param format if GL_COLOR, this is a color attachment point,
531 * if GL_DEPTH, this is a depth component attachment point,
532 * if GL_STENCIL, this is a stencil component attachment point.
535 test_attachment_completeness(const struct gl_context *ctx, GLenum format,
536 struct gl_renderbuffer_attachment *att)
538 assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
540 /* assume complete */
541 att->Complete = GL_TRUE;
543 /* Look for reasons why the attachment might be incomplete */
544 if (att->Type == GL_TEXTURE) {
545 const struct gl_texture_object *texObj = att->Texture;
546 struct gl_texture_image *texImage;
550 att_incomplete("no texobj");
551 att->Complete = GL_FALSE;
555 texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
557 att_incomplete("no teximage");
558 att->Complete = GL_FALSE;
561 if (texImage->Width < 1 || texImage->Height < 1) {
562 att_incomplete("teximage width/height=0");
563 printf("texobj = %u\n", texObj->Name);
564 printf("level = %d\n", att->TextureLevel);
565 att->Complete = GL_FALSE;
568 if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
569 att_incomplete("bad z offset");
570 att->Complete = GL_FALSE;
574 baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
576 if (format == GL_COLOR) {
577 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
578 att_incomplete("bad format");
579 att->Complete = GL_FALSE;
582 if (_mesa_is_format_compressed(texImage->TexFormat)) {
583 att_incomplete("compressed internalformat");
584 att->Complete = GL_FALSE;
588 else if (format == GL_DEPTH) {
589 if (baseFormat == GL_DEPTH_COMPONENT) {
592 else if (ctx->Extensions.EXT_packed_depth_stencil &&
593 ctx->Extensions.ARB_depth_texture &&
594 baseFormat == GL_DEPTH_STENCIL_EXT) {
598 att->Complete = GL_FALSE;
599 att_incomplete("bad depth format");
604 ASSERT(format == GL_STENCIL);
605 if (ctx->Extensions.EXT_packed_depth_stencil &&
606 ctx->Extensions.ARB_depth_texture &&
607 baseFormat == GL_DEPTH_STENCIL_EXT) {
611 /* no such thing as stencil-only textures */
612 att_incomplete("illegal stencil texture");
613 att->Complete = GL_FALSE;
618 else if (att->Type == GL_RENDERBUFFER_EXT) {
619 const GLenum baseFormat =
620 _mesa_get_format_base_format(att->Renderbuffer->Format);
622 ASSERT(att->Renderbuffer);
623 if (!att->Renderbuffer->InternalFormat ||
624 att->Renderbuffer->Width < 1 ||
625 att->Renderbuffer->Height < 1) {
626 att_incomplete("0x0 renderbuffer");
627 att->Complete = GL_FALSE;
630 if (format == GL_COLOR) {
631 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
632 att_incomplete("bad renderbuffer color format");
633 att->Complete = GL_FALSE;
637 else if (format == GL_DEPTH) {
638 if (baseFormat == GL_DEPTH_COMPONENT) {
641 else if (ctx->Extensions.EXT_packed_depth_stencil &&
642 baseFormat == GL_DEPTH_STENCIL_EXT) {
646 att_incomplete("bad renderbuffer depth format");
647 att->Complete = GL_FALSE;
652 assert(format == GL_STENCIL);
653 if (baseFormat == GL_STENCIL_INDEX) {
656 else if (ctx->Extensions.EXT_packed_depth_stencil &&
657 baseFormat == GL_DEPTH_STENCIL_EXT) {
661 att->Complete = GL_FALSE;
662 att_incomplete("bad renderbuffer stencil format");
668 ASSERT(att->Type == GL_NONE);
676 * Test if the given framebuffer object is complete and update its
677 * Status field with the results.
678 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
679 * driver to make hardware-specific validation/completeness checks.
680 * Also update the framebuffer's Width and Height fields if the
681 * framebuffer is complete.
684 _mesa_test_framebuffer_completeness(struct gl_context *ctx,
685 struct gl_framebuffer *fb)
688 GLenum intFormat = GL_NONE; /* color buffers' internal format */
689 GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
690 GLint numSamples = -1;
694 assert(_mesa_is_user_fbo(fb));
700 /* Start at -2 to more easily loop over all attachment points.
705 for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
706 struct gl_renderbuffer_attachment *att;
711 * XXX for ARB_fbo, only check color buffers that are named by
712 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
715 /* check for attachment completeness
718 att = &fb->Attachment[BUFFER_DEPTH];
719 test_attachment_completeness(ctx, GL_DEPTH, att);
720 if (!att->Complete) {
721 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
722 fbo_incomplete("depth attachment incomplete", -1);
727 att = &fb->Attachment[BUFFER_STENCIL];
728 test_attachment_completeness(ctx, GL_STENCIL, att);
729 if (!att->Complete) {
730 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
731 fbo_incomplete("stencil attachment incomplete", -1);
736 att = &fb->Attachment[BUFFER_COLOR0 + i];
737 test_attachment_completeness(ctx, GL_COLOR, att);
738 if (!att->Complete) {
739 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
740 fbo_incomplete("color attachment incomplete", i);
745 /* get width, height, format of the renderbuffer/texture
747 if (att->Type == GL_TEXTURE) {
748 const struct gl_texture_image *texImg =
749 _mesa_get_attachment_teximage(att);
750 minWidth = MIN2(minWidth, texImg->Width);
751 maxWidth = MAX2(maxWidth, texImg->Width);
752 minHeight = MIN2(minHeight, texImg->Height);
753 maxHeight = MAX2(maxHeight, texImg->Height);
754 f = texImg->_BaseFormat;
755 attFormat = texImg->TexFormat;
757 if (!_mesa_is_legal_color_format(ctx, f) &&
758 !is_legal_depth_format(ctx, f)) {
759 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
760 fbo_incomplete("texture attachment incomplete", -1);
764 else if (att->Type == GL_RENDERBUFFER_EXT) {
765 minWidth = MIN2(minWidth, att->Renderbuffer->Width);
766 maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
767 minHeight = MIN2(minHeight, att->Renderbuffer->Height);
768 maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
769 f = att->Renderbuffer->InternalFormat;
770 attFormat = att->Renderbuffer->Format;
774 assert(att->Type == GL_NONE);
778 if (att->Renderbuffer && numSamples < 0) {
780 numSamples = att->Renderbuffer->NumSamples;
783 /* check if integer color */
784 fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
786 /* Error-check width, height, format, samples
788 if (numImages == 1) {
789 /* save format, num samples */
795 if (!ctx->Extensions.ARB_framebuffer_object) {
796 /* check that width, height, format are same */
797 if (minWidth != maxWidth || minHeight != maxHeight) {
798 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
799 fbo_incomplete("width or height mismatch", -1);
802 /* check that all color buffers are the same format */
803 if (intFormat != GL_NONE && f != intFormat) {
804 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
805 fbo_incomplete("format mismatch", -1);
809 if (att->Renderbuffer &&
810 att->Renderbuffer->NumSamples != numSamples) {
811 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
812 fbo_incomplete("inconsistant number of samples", i);
819 if (ctx->API == API_OPENGL && !ctx->Extensions.ARB_ES2_compatibility) {
820 /* Check that all DrawBuffers are present */
821 for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
822 if (fb->ColorDrawBuffer[j] != GL_NONE) {
823 const struct gl_renderbuffer_attachment *att
824 = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
826 if (att->Type == GL_NONE) {
827 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
828 fbo_incomplete("missing drawbuffer", j);
834 /* Check that the ReadBuffer is present */
835 if (fb->ColorReadBuffer != GL_NONE) {
836 const struct gl_renderbuffer_attachment *att
837 = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
839 if (att->Type == GL_NONE) {
840 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
841 fbo_incomplete("missing readbuffer", -1);
850 if (numImages == 0) {
851 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
852 fbo_incomplete("no attachments", -1);
856 /* Provisionally set status = COMPLETE ... */
857 fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
859 /* ... but the driver may say the FB is incomplete.
860 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
863 if (ctx->Driver.ValidateFramebuffer) {
864 ctx->Driver.ValidateFramebuffer(ctx, fb);
865 if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
866 fbo_incomplete("driver marked FBO as incomplete", -1);
870 if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
872 * Note that if ARB_framebuffer_object is supported and the attached
873 * renderbuffers/textures are different sizes, the framebuffer
874 * width/height will be set to the smallest width/height.
876 fb->Width = minWidth;
877 fb->Height = minHeight;
879 /* finally, update the visual info for the framebuffer */
880 _mesa_update_framebuffer_visual(ctx, fb);
886 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
888 GET_CURRENT_CONTEXT(ctx);
889 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
891 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
892 if (rb != NULL && rb != &DummyRenderbuffer)
900 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
902 struct gl_renderbuffer *newRb;
903 GET_CURRENT_CONTEXT(ctx);
905 ASSERT_OUTSIDE_BEGIN_END(ctx);
907 if (target != GL_RENDERBUFFER_EXT) {
908 _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
912 /* No need to flush here since the render buffer binding has no
913 * effect on rendering state.
917 newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
918 if (newRb == &DummyRenderbuffer) {
919 /* ID was reserved, but no real renderbuffer object made yet */
922 else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
923 /* All RB IDs must be Gen'd */
924 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
929 /* create new renderbuffer object */
930 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
932 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
935 ASSERT(newRb->AllocStorage);
936 _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
937 newRb->RefCount = 1; /* referenced by hash table */
944 ASSERT(newRb != &DummyRenderbuffer);
946 _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
951 * If the given renderbuffer is anywhere attached to the framebuffer, detach
953 * This is used when a renderbuffer object is deleted.
954 * The spec calls for unbinding.
957 detach_renderbuffer(struct gl_context *ctx,
958 struct gl_framebuffer *fb,
959 struct gl_renderbuffer *rb)
962 for (i = 0; i < BUFFER_COUNT; i++) {
963 if (fb->Attachment[i].Renderbuffer == rb) {
964 _mesa_remove_attachment(ctx, &fb->Attachment[i]);
967 invalidate_framebuffer(fb);
972 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
975 GET_CURRENT_CONTEXT(ctx);
977 ASSERT_OUTSIDE_BEGIN_END(ctx);
978 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
980 for (i = 0; i < n; i++) {
981 if (renderbuffers[i] > 0) {
982 struct gl_renderbuffer *rb;
983 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
985 /* check if deleting currently bound renderbuffer object */
986 if (rb == ctx->CurrentRenderbuffer) {
988 ASSERT(rb->RefCount >= 2);
989 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
992 if (_mesa_is_user_fbo(ctx->DrawBuffer)) {
993 detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
995 if (_mesa_is_user_fbo(ctx->ReadBuffer)
996 && ctx->ReadBuffer != ctx->DrawBuffer) {
997 detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
1000 /* Remove from hash table immediately, to free the ID.
1001 * But the object will not be freed until it's no longer
1002 * referenced anywhere else.
1004 _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
1006 if (rb != &DummyRenderbuffer) {
1007 /* no longer referenced by hash table */
1008 _mesa_reference_renderbuffer(&rb, NULL);
1017 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
1019 GET_CURRENT_CONTEXT(ctx);
1023 ASSERT_OUTSIDE_BEGIN_END(ctx);
1026 _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
1033 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
1035 for (i = 0; i < n; i++) {
1036 GLuint name = first + i;
1037 renderbuffers[i] = name;
1038 /* insert dummy placeholder into hash table */
1039 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1040 _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
1041 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1047 * Given an internal format token for a render buffer, return the
1048 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1049 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1050 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1052 * This is similar to _mesa_base_tex_format() but the set of valid
1053 * internal formats is different.
1055 * Note that even if a format is determined to be legal here, validation
1056 * of the FBO may fail if the format is not supported by the driver/GPU.
1058 * \param internalFormat as passed to glRenderbufferStorage()
1059 * \return the base internal format, or 0 if internalFormat is illegal
1062 _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
1065 * Notes: some formats such as alpha, luminance, etc. were added
1066 * with GL_ARB_framebuffer_object.
1068 switch (internalFormat) {
1074 return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1078 case GL_LUMINANCE12:
1079 case GL_LUMINANCE16:
1080 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1081 case GL_LUMINANCE_ALPHA:
1082 case GL_LUMINANCE4_ALPHA4:
1083 case GL_LUMINANCE6_ALPHA2:
1084 case GL_LUMINANCE8_ALPHA8:
1085 case GL_LUMINANCE12_ALPHA4:
1086 case GL_LUMINANCE12_ALPHA12:
1087 case GL_LUMINANCE16_ALPHA16:
1088 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1092 case GL_INTENSITY12:
1093 case GL_INTENSITY16:
1094 return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1113 case GL_SRGB8_ALPHA8_EXT:
1115 case GL_STENCIL_INDEX:
1116 case GL_STENCIL_INDEX1_EXT:
1117 case GL_STENCIL_INDEX4_EXT:
1118 case GL_STENCIL_INDEX8_EXT:
1119 case GL_STENCIL_INDEX16_EXT:
1120 return GL_STENCIL_INDEX;
1121 case GL_DEPTH_COMPONENT:
1122 case GL_DEPTH_COMPONENT16:
1123 case GL_DEPTH_COMPONENT24:
1124 case GL_DEPTH_COMPONENT32:
1125 return GL_DEPTH_COMPONENT;
1126 case GL_DEPTH_STENCIL_EXT:
1127 case GL_DEPTH24_STENCIL8_EXT:
1128 if (ctx->Extensions.EXT_packed_depth_stencil)
1129 return GL_DEPTH_STENCIL_EXT;
1132 case GL_DEPTH_COMPONENT32F:
1133 if (ctx->Extensions.ARB_depth_buffer_float)
1134 return GL_DEPTH_COMPONENT;
1137 case GL_DEPTH32F_STENCIL8:
1138 if (ctx->Extensions.ARB_depth_buffer_float)
1139 return GL_DEPTH_STENCIL;
1145 return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
1149 return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
1150 /* signed normalized texture formats */
1154 return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
1158 return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
1161 case GL_RGB16_SNORM:
1162 return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
1164 case GL_RGBA8_SNORM:
1165 case GL_RGBA16_SNORM:
1166 return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
1167 case GL_ALPHA_SNORM:
1168 case GL_ALPHA8_SNORM:
1169 case GL_ALPHA16_SNORM:
1170 return ctx->Extensions.EXT_texture_snorm &&
1171 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1172 case GL_LUMINANCE_SNORM:
1173 case GL_LUMINANCE8_SNORM:
1174 case GL_LUMINANCE16_SNORM:
1175 return ctx->Extensions.EXT_texture_snorm &&
1176 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1177 case GL_LUMINANCE_ALPHA_SNORM:
1178 case GL_LUMINANCE8_ALPHA8_SNORM:
1179 case GL_LUMINANCE16_ALPHA16_SNORM:
1180 return ctx->Extensions.EXT_texture_snorm &&
1181 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1182 case GL_INTENSITY_SNORM:
1183 case GL_INTENSITY8_SNORM:
1184 case GL_INTENSITY16_SNORM:
1185 return ctx->Extensions.EXT_texture_snorm &&
1186 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1189 return ctx->Extensions.ARB_texture_rg &&
1190 ctx->Extensions.ARB_texture_float ? GL_RED : 0;
1193 return ctx->Extensions.ARB_texture_rg &&
1194 ctx->Extensions.ARB_texture_float ? GL_RG : 0;
1197 return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
1200 return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
1201 case GL_ALPHA16F_ARB:
1202 case GL_ALPHA32F_ARB:
1203 return ctx->Extensions.ARB_texture_float &&
1204 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1205 case GL_LUMINANCE16F_ARB:
1206 case GL_LUMINANCE32F_ARB:
1207 return ctx->Extensions.ARB_texture_float &&
1208 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1209 case GL_LUMINANCE_ALPHA16F_ARB:
1210 case GL_LUMINANCE_ALPHA32F_ARB:
1211 return ctx->Extensions.ARB_texture_float &&
1212 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1213 case GL_INTENSITY16F_ARB:
1214 case GL_INTENSITY32F_ARB:
1215 return ctx->Extensions.ARB_texture_float &&
1216 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1218 return ctx->Extensions.EXT_texture_shared_exponent ? GL_RGB : 0;
1219 case GL_R11F_G11F_B10F:
1220 return ctx->Extensions.EXT_packed_float ? GL_RGB : 0;
1222 case GL_RGBA8UI_EXT:
1223 case GL_RGBA16UI_EXT:
1224 case GL_RGBA32UI_EXT:
1226 case GL_RGBA16I_EXT:
1227 case GL_RGBA32I_EXT:
1228 return ctx->VersionMajor >= 3 ||
1229 ctx->Extensions.EXT_texture_integer ? GL_RGBA : 0;
1232 case GL_RGB16UI_EXT:
1233 case GL_RGB32UI_EXT:
1237 return ctx->VersionMajor >= 3 ||
1238 ctx->Extensions.EXT_texture_integer ? GL_RGB : 0;
1246 return ctx->VersionMajor >= 3 ||
1247 (ctx->Extensions.ARB_texture_rg &&
1248 ctx->Extensions.EXT_texture_integer) ? GL_RED : 0;
1256 return ctx->VersionMajor >= 3 ||
1257 (ctx->Extensions.ARB_texture_rg &&
1258 ctx->Extensions.EXT_texture_integer) ? GL_RG : 0;
1260 case GL_INTENSITY8I_EXT:
1261 case GL_INTENSITY8UI_EXT:
1262 case GL_INTENSITY16I_EXT:
1263 case GL_INTENSITY16UI_EXT:
1264 case GL_INTENSITY32I_EXT:
1265 case GL_INTENSITY32UI_EXT:
1266 return ctx->Extensions.EXT_texture_integer &&
1267 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1269 case GL_LUMINANCE8I_EXT:
1270 case GL_LUMINANCE8UI_EXT:
1271 case GL_LUMINANCE16I_EXT:
1272 case GL_LUMINANCE16UI_EXT:
1273 case GL_LUMINANCE32I_EXT:
1274 case GL_LUMINANCE32UI_EXT:
1275 return ctx->Extensions.EXT_texture_integer &&
1276 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1278 case GL_LUMINANCE_ALPHA8I_EXT:
1279 case GL_LUMINANCE_ALPHA8UI_EXT:
1280 case GL_LUMINANCE_ALPHA16I_EXT:
1281 case GL_LUMINANCE_ALPHA16UI_EXT:
1282 case GL_LUMINANCE_ALPHA32I_EXT:
1283 case GL_LUMINANCE_ALPHA32UI_EXT:
1284 return ctx->Extensions.EXT_texture_integer &&
1285 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1287 case GL_ALPHA8I_EXT:
1288 case GL_ALPHA8UI_EXT:
1289 case GL_ALPHA16I_EXT:
1290 case GL_ALPHA16UI_EXT:
1291 case GL_ALPHA32I_EXT:
1292 case GL_ALPHA32UI_EXT:
1293 return ctx->Extensions.EXT_texture_integer &&
1294 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1297 return ctx->Extensions.ARB_texture_rgb10_a2ui ? GL_RGBA : 0;
1305 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1308 invalidate_rb(GLuint key, void *data, void *userData)
1310 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
1311 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
1313 /* If this is a user-created FBO */
1314 if (_mesa_is_user_fbo(fb)) {
1316 for (i = 0; i < BUFFER_COUNT; i++) {
1317 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1318 if (att->Type == GL_RENDERBUFFER &&
1319 att->Renderbuffer == rb) {
1320 /* Mark fb status as indeterminate to force re-validation */
1329 /** sentinal value, see below */
1330 #define NO_SAMPLES 1000
1334 * Helper function used by _mesa_RenderbufferStorageEXT() and
1335 * _mesa_RenderbufferStorageMultisample().
1336 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1339 renderbuffer_storage(GLenum target, GLenum internalFormat,
1340 GLsizei width, GLsizei height, GLsizei samples)
1342 const char *func = samples == NO_SAMPLES ?
1343 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1344 struct gl_renderbuffer *rb;
1346 GET_CURRENT_CONTEXT(ctx);
1348 ASSERT_OUTSIDE_BEGIN_END(ctx);
1350 if (target != GL_RENDERBUFFER_EXT) {
1351 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
1355 baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
1356 if (baseFormat == 0) {
1357 _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
1361 if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1362 _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
1366 if (height < 0 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1367 _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
1371 if (samples == NO_SAMPLES) {
1372 /* NumSamples == 0 indicates non-multisampling */
1375 else if (samples > (GLsizei) ctx->Const.MaxSamples) {
1376 /* note: driver may choose to use more samples than what's requested */
1377 _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
1381 rb = ctx->CurrentRenderbuffer;
1383 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
1387 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1389 if (rb->InternalFormat == internalFormat &&
1390 rb->Width == (GLuint) width &&
1391 rb->Height == (GLuint) height &&
1392 rb->NumSamples == samples) {
1393 /* no change in allocation needed */
1397 /* These MUST get set by the AllocStorage func */
1398 rb->Format = MESA_FORMAT_NONE;
1399 rb->NumSamples = samples;
1401 /* Now allocate the storage */
1402 ASSERT(rb->AllocStorage);
1403 if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
1404 /* No error - check/set fields now */
1405 assert(rb->Format != MESA_FORMAT_NONE);
1406 assert(rb->Width == (GLuint) width);
1407 assert(rb->Height == (GLuint) height);
1408 rb->InternalFormat = internalFormat;
1409 rb->_BaseFormat = baseFormat;
1410 assert(rb->_BaseFormat != 0);
1413 /* Probably ran out of memory - clear the fields */
1416 rb->Format = MESA_FORMAT_NONE;
1417 rb->InternalFormat = GL_NONE;
1418 rb->_BaseFormat = GL_NONE;
1422 /* Invalidate the framebuffers the renderbuffer is attached in. */
1423 if (rb->AttachedAnytime) {
1424 _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
1429 #if FEATURE_OES_EGL_image
1431 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
1433 struct gl_renderbuffer *rb;
1434 GET_CURRENT_CONTEXT(ctx);
1435 ASSERT_OUTSIDE_BEGIN_END(ctx);
1437 if (!ctx->Extensions.OES_EGL_image) {
1438 _mesa_error(ctx, GL_INVALID_OPERATION,
1439 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1443 if (target != GL_RENDERBUFFER) {
1444 _mesa_error(ctx, GL_INVALID_ENUM,
1445 "EGLImageTargetRenderbufferStorageOES");
1449 rb = ctx->CurrentRenderbuffer;
1451 _mesa_error(ctx, GL_INVALID_OPERATION,
1452 "EGLImageTargetRenderbufferStorageOES");
1456 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1458 ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
1464 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1465 * _mesa_GetFramebufferAttachmentParameterivEXT()
1466 * We have to be careful to respect the base format. For example, if a
1467 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1468 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1469 * we need to return zero.
1472 get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
1474 if (_mesa_base_format_has_channel(baseFormat, pname))
1475 return _mesa_get_format_bits(format, pname);
1483 _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1484 GLsizei width, GLsizei height)
1486 /* GL_ARB_fbo says calling this function is equivalent to calling
1487 * glRenderbufferStorageMultisample() with samples=0. We pass in
1488 * a token value here just for error reporting purposes.
1490 renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
1495 _mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
1496 GLenum internalFormat,
1497 GLsizei width, GLsizei height)
1499 renderbuffer_storage(target, internalFormat, width, height, samples);
1504 * OpenGL ES version of glRenderBufferStorage.
1507 _es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1508 GLsizei width, GLsizei height)
1510 switch (internalFormat) {
1512 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1513 /* choose a closest format */
1514 internalFormat = GL_RGB5;
1520 renderbuffer_storage(target, internalFormat, width, height, 0);
1525 _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
1527 struct gl_renderbuffer *rb;
1528 GET_CURRENT_CONTEXT(ctx);
1530 ASSERT_OUTSIDE_BEGIN_END(ctx);
1532 if (target != GL_RENDERBUFFER_EXT) {
1533 _mesa_error(ctx, GL_INVALID_ENUM,
1534 "glGetRenderbufferParameterivEXT(target)");
1538 rb = ctx->CurrentRenderbuffer;
1540 _mesa_error(ctx, GL_INVALID_OPERATION,
1541 "glGetRenderbufferParameterivEXT");
1545 /* No need to flush here since we're just quering state which is
1546 * not effected by rendering.
1550 case GL_RENDERBUFFER_WIDTH_EXT:
1551 *params = rb->Width;
1553 case GL_RENDERBUFFER_HEIGHT_EXT:
1554 *params = rb->Height;
1556 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
1557 *params = rb->InternalFormat;
1559 case GL_RENDERBUFFER_RED_SIZE_EXT:
1560 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1561 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1562 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1563 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1564 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1565 *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
1567 case GL_RENDERBUFFER_SAMPLES:
1568 if (ctx->Extensions.ARB_framebuffer_object) {
1569 *params = rb->NumSamples;
1574 _mesa_error(ctx, GL_INVALID_ENUM,
1575 "glGetRenderbufferParameterivEXT(target)");
1581 GLboolean GLAPIENTRY
1582 _mesa_IsFramebufferEXT(GLuint framebuffer)
1584 GET_CURRENT_CONTEXT(ctx);
1585 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1587 struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
1588 if (rb != NULL && rb != &DummyFramebuffer)
1596 * Check if any of the attachments of the given framebuffer are textures
1597 * (render to texture). Call ctx->Driver.RenderTexture() for such
1601 check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1604 ASSERT(ctx->Driver.RenderTexture);
1606 if (_mesa_is_winsys_fbo(fb))
1607 return; /* can't render to texture with winsys framebuffers */
1609 for (i = 0; i < BUFFER_COUNT; i++) {
1610 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1611 if (att->Texture && _mesa_get_attachment_teximage(att)) {
1612 ctx->Driver.RenderTexture(ctx, fb, att);
1619 * Examine all the framebuffer's attachments to see if any are textures.
1620 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1621 * notify the device driver that the texture image may have changed.
1624 check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1626 if (_mesa_is_winsys_fbo(fb))
1627 return; /* can't render to texture with winsys framebuffers */
1629 if (ctx->Driver.FinishRenderTexture) {
1631 for (i = 0; i < BUFFER_COUNT; i++) {
1632 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1633 if (att->Texture && att->Renderbuffer) {
1634 ctx->Driver.FinishRenderTexture(ctx, att);
1642 _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
1644 struct gl_framebuffer *newDrawFb, *newReadFb;
1645 struct gl_framebuffer *oldDrawFb, *oldReadFb;
1646 GLboolean bindReadBuf, bindDrawBuf;
1647 GET_CURRENT_CONTEXT(ctx);
1650 if (ctx->Extensions.ARB_framebuffer_object) {
1651 ASSERT(ctx->Extensions.EXT_framebuffer_object);
1652 ASSERT(ctx->Extensions.EXT_framebuffer_blit);
1656 ASSERT_OUTSIDE_BEGIN_END(ctx);
1658 if (!ctx->Extensions.EXT_framebuffer_object) {
1659 _mesa_error(ctx, GL_INVALID_OPERATION,
1660 "glBindFramebufferEXT(unsupported)");
1665 #if FEATURE_EXT_framebuffer_blit
1666 case GL_DRAW_FRAMEBUFFER_EXT:
1667 if (!ctx->Extensions.EXT_framebuffer_blit) {
1668 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1671 bindDrawBuf = GL_TRUE;
1672 bindReadBuf = GL_FALSE;
1674 case GL_READ_FRAMEBUFFER_EXT:
1675 if (!ctx->Extensions.EXT_framebuffer_blit) {
1676 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1679 bindDrawBuf = GL_FALSE;
1680 bindReadBuf = GL_TRUE;
1683 case GL_FRAMEBUFFER_EXT:
1684 bindDrawBuf = GL_TRUE;
1685 bindReadBuf = GL_TRUE;
1688 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1693 /* Binding a user-created framebuffer object */
1694 newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
1695 if (newDrawFb == &DummyFramebuffer) {
1696 /* ID was reserved, but no real framebuffer object made yet */
1699 else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
1700 /* All FBO IDs must be Gen'd */
1701 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
1706 /* create new framebuffer object */
1707 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
1709 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
1712 _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
1714 newReadFb = newDrawFb;
1717 /* Binding the window system framebuffer (which was originally set
1718 * with MakeCurrent).
1720 newDrawFb = ctx->WinSysDrawBuffer;
1721 newReadFb = ctx->WinSysReadBuffer;
1725 ASSERT(newDrawFb != &DummyFramebuffer);
1727 /* save pointers to current/old framebuffers */
1728 oldDrawFb = ctx->DrawBuffer;
1729 oldReadFb = ctx->ReadBuffer;
1731 /* check if really changing bindings */
1732 if (oldDrawFb == newDrawFb)
1733 bindDrawBuf = GL_FALSE;
1734 if (oldReadFb == newReadFb)
1735 bindReadBuf = GL_FALSE;
1738 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1740 * We also check if we're beginning and/or ending render-to-texture.
1741 * When a framebuffer with texture attachments is unbound, call
1742 * ctx->Driver.FinishRenderTexture().
1743 * When a framebuffer with texture attachments is bound, call
1744 * ctx->Driver.RenderTexture().
1746 * Note that if the ReadBuffer has texture attachments we don't consider
1747 * that a render-to-texture case.
1750 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1752 /* check if old readbuffer was render-to-texture */
1753 check_end_texture_render(ctx, oldReadFb);
1755 _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
1759 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1761 /* check if old framebuffer had any texture attachments */
1763 check_end_texture_render(ctx, oldDrawFb);
1765 /* check if newly bound framebuffer has any texture attachments */
1766 check_begin_texture_render(ctx, newDrawFb);
1768 _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
1771 if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
1772 ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
1778 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1781 GET_CURRENT_CONTEXT(ctx);
1783 ASSERT_OUTSIDE_BEGIN_END(ctx);
1784 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1786 for (i = 0; i < n; i++) {
1787 if (framebuffers[i] > 0) {
1788 struct gl_framebuffer *fb;
1789 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1791 ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1793 /* check if deleting currently bound framebuffer object */
1794 if (ctx->Extensions.EXT_framebuffer_blit) {
1795 /* separate draw/read binding points */
1796 if (fb == ctx->DrawBuffer) {
1798 ASSERT(fb->RefCount >= 2);
1799 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
1801 if (fb == ctx->ReadBuffer) {
1803 ASSERT(fb->RefCount >= 2);
1804 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
1808 /* only one binding point for read/draw buffers */
1809 if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
1811 ASSERT(fb->RefCount >= 2);
1812 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1816 /* remove from hash table immediately, to free the ID */
1817 _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1819 if (fb != &DummyFramebuffer) {
1820 /* But the object will not be freed until it's no longer
1821 * bound in any context.
1823 _mesa_reference_framebuffer(&fb, NULL);
1832 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1834 GET_CURRENT_CONTEXT(ctx);
1838 ASSERT_OUTSIDE_BEGIN_END(ctx);
1841 _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1848 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1850 for (i = 0; i < n; i++) {
1851 GLuint name = first + i;
1852 framebuffers[i] = name;
1853 /* insert dummy placeholder into hash table */
1854 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1855 _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1856 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1863 _mesa_CheckFramebufferStatusEXT(GLenum target)
1865 struct gl_framebuffer *buffer;
1866 GET_CURRENT_CONTEXT(ctx);
1868 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1870 buffer = get_framebuffer_target(ctx, target);
1872 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1876 if (_mesa_is_winsys_fbo(buffer)) {
1877 /* The window system / default framebuffer is always complete */
1878 return GL_FRAMEBUFFER_COMPLETE_EXT;
1881 /* No need to flush here */
1883 if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
1884 _mesa_test_framebuffer_completeness(ctx, buffer);
1887 return buffer->_Status;
1892 * Replicate the src attachment point. Used by framebuffer_texture() when
1893 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1894 * GL_STENCIL_ATTACHMENT.
1897 reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb,
1898 gl_buffer_index dst,
1899 gl_buffer_index src)
1901 struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst];
1902 struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src];
1904 assert(src_att->Texture != NULL);
1905 assert(src_att->Renderbuffer != NULL);
1907 _mesa_reference_texobj(&dst_att->Texture, src_att->Texture);
1908 _mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer);
1909 dst_att->Type = src_att->Type;
1910 dst_att->Complete = src_att->Complete;
1911 dst_att->TextureLevel = src_att->TextureLevel;
1912 dst_att->Zoffset = src_att->Zoffset;
1917 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
1918 * glFramebufferTextureLayerEXT().
1919 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
1920 * get textarget=0 in that case.
1923 framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
1924 GLenum attachment, GLenum textarget, GLuint texture,
1925 GLint level, GLint zoffset)
1927 struct gl_renderbuffer_attachment *att;
1928 struct gl_texture_object *texObj = NULL;
1929 struct gl_framebuffer *fb;
1930 GLenum maxLevelsTarget;
1932 ASSERT_OUTSIDE_BEGIN_END(ctx);
1934 fb = get_framebuffer_target(ctx, target);
1936 _mesa_error(ctx, GL_INVALID_ENUM,
1937 "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
1941 /* check framebuffer binding */
1942 if (_mesa_is_winsys_fbo(fb)) {
1943 _mesa_error(ctx, GL_INVALID_OPERATION,
1944 "glFramebufferTexture%sEXT", caller);
1948 /* The textarget, level, and zoffset parameters are only validated if
1949 * texture is non-zero.
1952 GLboolean err = GL_TRUE;
1954 texObj = _mesa_lookup_texture(ctx, texture);
1955 if (texObj != NULL) {
1956 if (textarget == 0) {
1957 /* If textarget == 0 it means we're being called by
1958 * glFramebufferTextureLayer() and textarget is not used.
1959 * The only legal texture types for that function are 3D and
1960 * 1D/2D arrays textures.
1962 err = (texObj->Target != GL_TEXTURE_3D) &&
1963 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1964 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
1967 /* Make sure textarget is consistent with the texture's type */
1968 err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
1969 ? !_mesa_is_cube_face(textarget)
1970 : (texObj->Target != textarget);
1974 /* can't render to a non-existant texture */
1975 _mesa_error(ctx, GL_INVALID_OPERATION,
1976 "glFramebufferTexture%sEXT(non existant texture)",
1982 _mesa_error(ctx, GL_INVALID_OPERATION,
1983 "glFramebufferTexture%sEXT(texture target mismatch)",
1988 if (texObj->Target == GL_TEXTURE_3D) {
1989 const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1990 if (zoffset < 0 || zoffset >= maxSize) {
1991 _mesa_error(ctx, GL_INVALID_VALUE,
1992 "glFramebufferTexture%sEXT(zoffset)", caller);
1996 else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
1997 (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
1998 if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
1999 _mesa_error(ctx, GL_INVALID_VALUE,
2000 "glFramebufferTexture%sEXT(layer)", caller);
2005 maxLevelsTarget = textarget ? textarget : texObj->Target;
2007 (level >= _mesa_max_texture_levels(ctx, maxLevelsTarget))) {
2008 _mesa_error(ctx, GL_INVALID_VALUE,
2009 "glFramebufferTexture%sEXT(level)", caller);
2014 att = _mesa_get_attachment(ctx, fb, attachment);
2016 _mesa_error(ctx, GL_INVALID_ENUM,
2017 "glFramebufferTexture%sEXT(attachment)", caller);
2021 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2023 _glthread_LOCK_MUTEX(fb->Mutex);
2025 if (attachment == GL_DEPTH_ATTACHMENT &&
2026 texObj == fb->Attachment[BUFFER_STENCIL].Texture &&
2027 level == fb->Attachment[BUFFER_STENCIL].TextureLevel &&
2028 _mesa_tex_target_to_face(textarget) ==
2029 fb->Attachment[BUFFER_STENCIL].CubeMapFace &&
2030 zoffset == fb->Attachment[BUFFER_STENCIL].Zoffset) {
2031 /* The texture object is already attached to the stencil attachment
2032 * point. Don't create a new renderbuffer; just reuse the stencil
2033 * attachment's. This is required to prevent a GL error in
2034 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2036 reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH,
2038 } else if (attachment == GL_STENCIL_ATTACHMENT &&
2039 texObj == fb->Attachment[BUFFER_DEPTH].Texture &&
2040 level == fb->Attachment[BUFFER_DEPTH].TextureLevel &&
2041 _mesa_tex_target_to_face(textarget) ==
2042 fb->Attachment[BUFFER_DEPTH].CubeMapFace &&
2043 zoffset == fb->Attachment[BUFFER_DEPTH].Zoffset) {
2044 /* As above, but with depth and stencil transposed. */
2045 reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL,
2048 _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
2050 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2051 /* Above we created a new renderbuffer and attached it to the
2052 * depth attachment point. Now attach it to the stencil attachment
2055 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2056 reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL,
2061 /* Set the render-to-texture flag. We'll check this flag in
2062 * glTexImage() and friends to determine if we need to revalidate
2063 * any FBOs that might be rendering into this texture.
2064 * This flag never gets cleared since it's non-trivial to determine
2065 * when all FBOs might be done rendering to this texture. That's OK
2066 * though since it's uncommon to render to a texture then repeatedly
2067 * call glTexImage() to change images in the texture.
2069 texObj->_RenderToTexture = GL_TRUE;
2072 _mesa_remove_attachment(ctx, att);
2073 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2074 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2075 _mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]);
2079 invalidate_framebuffer(fb);
2081 _glthread_UNLOCK_MUTEX(fb->Mutex);
2087 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
2088 GLenum textarget, GLuint texture, GLint level)
2090 GET_CURRENT_CONTEXT(ctx);
2095 switch (textarget) {
2099 case GL_TEXTURE_1D_ARRAY:
2100 error = !ctx->Extensions.EXT_texture_array;
2107 _mesa_error(ctx, GL_INVALID_OPERATION,
2108 "glFramebufferTexture1DEXT(textarget=%s)",
2109 _mesa_lookup_enum_by_nr(textarget));
2114 framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
2120 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
2121 GLenum textarget, GLuint texture, GLint level)
2123 GET_CURRENT_CONTEXT(ctx);
2128 switch (textarget) {
2132 case GL_TEXTURE_RECTANGLE:
2133 error = !ctx->Extensions.NV_texture_rectangle;
2135 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
2136 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
2137 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
2138 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
2139 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
2140 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
2141 error = !ctx->Extensions.ARB_texture_cube_map;
2143 case GL_TEXTURE_2D_ARRAY:
2144 error = !ctx->Extensions.EXT_texture_array;
2151 _mesa_error(ctx, GL_INVALID_OPERATION,
2152 "glFramebufferTexture2DEXT(textarget=%s)",
2153 _mesa_lookup_enum_by_nr(textarget));
2158 framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
2164 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
2165 GLenum textarget, GLuint texture,
2166 GLint level, GLint zoffset)
2168 GET_CURRENT_CONTEXT(ctx);
2170 if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
2171 _mesa_error(ctx, GL_INVALID_OPERATION,
2172 "glFramebufferTexture3DEXT(textarget)");
2176 framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
2182 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
2183 GLuint texture, GLint level, GLint layer)
2185 GET_CURRENT_CONTEXT(ctx);
2187 framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
2193 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
2194 GLenum renderbufferTarget,
2195 GLuint renderbuffer)
2197 struct gl_renderbuffer_attachment *att;
2198 struct gl_framebuffer *fb;
2199 struct gl_renderbuffer *rb;
2200 GET_CURRENT_CONTEXT(ctx);
2202 ASSERT_OUTSIDE_BEGIN_END(ctx);
2204 fb = get_framebuffer_target(ctx, target);
2206 _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
2210 if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
2211 _mesa_error(ctx, GL_INVALID_ENUM,
2212 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2216 if (_mesa_is_winsys_fbo(fb)) {
2217 /* Can't attach new renderbuffers to a window system framebuffer */
2218 _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
2222 att = _mesa_get_attachment(ctx, fb, attachment);
2224 _mesa_error(ctx, GL_INVALID_ENUM,
2225 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2226 _mesa_lookup_enum_by_nr(attachment));
2231 rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
2233 _mesa_error(ctx, GL_INVALID_OPERATION,
2234 "glFramebufferRenderbufferEXT(non-existant"
2235 " renderbuffer %u)", renderbuffer);
2238 else if (rb == &DummyRenderbuffer) {
2239 /* This is what NVIDIA does */
2240 _mesa_error(ctx, GL_INVALID_VALUE,
2241 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2247 /* remove renderbuffer attachment */
2251 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
2252 rb && rb->Format != MESA_FORMAT_NONE) {
2253 /* make sure the renderbuffer is a depth/stencil format */
2254 const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
2255 if (baseFormat != GL_DEPTH_STENCIL) {
2256 _mesa_error(ctx, GL_INVALID_OPERATION,
2257 "glFramebufferRenderbufferEXT(renderbuffer"
2258 " is not DEPTH_STENCIL format)");
2264 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2266 assert(ctx->Driver.FramebufferRenderbuffer);
2267 ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
2269 /* Some subsequent GL commands may depend on the framebuffer's visual
2270 * after the binding is updated. Update visual info now.
2272 _mesa_update_framebuffer_visual(ctx, fb);
2277 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
2278 GLenum pname, GLint *params)
2280 const struct gl_renderbuffer_attachment *att;
2281 struct gl_framebuffer *buffer;
2283 GET_CURRENT_CONTEXT(ctx);
2285 ASSERT_OUTSIDE_BEGIN_END(ctx);
2287 /* The error differs in GL and GLES. */
2288 err = ctx->API == API_OPENGL ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
2290 buffer = get_framebuffer_target(ctx, target);
2292 _mesa_error(ctx, GL_INVALID_ENUM,
2293 "glGetFramebufferAttachmentParameterivEXT(target)");
2297 if (_mesa_is_winsys_fbo(buffer)) {
2298 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2301 * "If the framebuffer currently bound to target is zero, then
2302 * INVALID_OPERATION is generated."
2304 * The EXT_framebuffer_object spec has the same wording, and the
2305 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2308 if (ctx->API != API_OPENGL || !ctx->Extensions.ARB_framebuffer_object) {
2309 _mesa_error(ctx, GL_INVALID_OPERATION,
2310 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2313 /* the default / window-system FBO */
2314 att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
2317 /* user-created framebuffer FBO */
2318 att = _mesa_get_attachment(ctx, buffer, attachment);
2322 _mesa_error(ctx, GL_INVALID_ENUM,
2323 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2327 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2328 /* the depth and stencil attachments must point to the same buffer */
2329 const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
2330 depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
2331 stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
2332 if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
2333 _mesa_error(ctx, GL_INVALID_OPERATION,
2334 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2335 " attachments differ)");
2340 /* No need to flush here */
2343 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
2344 *params = _mesa_is_winsys_fbo(buffer)
2345 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
2347 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
2348 if (att->Type == GL_RENDERBUFFER_EXT) {
2349 *params = att->Renderbuffer->Name;
2351 else if (att->Type == GL_TEXTURE) {
2352 *params = att->Texture->Name;
2355 assert(att->Type == GL_NONE);
2356 if (ctx->API == API_OPENGL) {
2359 _mesa_error(ctx, GL_INVALID_ENUM,
2360 "glGetFramebufferAttachmentParameterivEXT(pname)");
2364 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
2365 if (att->Type == GL_TEXTURE) {
2366 *params = att->TextureLevel;
2368 else if (att->Type == GL_NONE) {
2369 _mesa_error(ctx, err,
2370 "glGetFramebufferAttachmentParameterivEXT(pname)");
2373 _mesa_error(ctx, GL_INVALID_ENUM,
2374 "glGetFramebufferAttachmentParameterivEXT(pname)");
2377 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
2378 if (att->Type == GL_TEXTURE) {
2379 if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
2380 *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
2386 else if (att->Type == GL_NONE) {
2387 _mesa_error(ctx, err,
2388 "glGetFramebufferAttachmentParameterivEXT(pname)");
2391 _mesa_error(ctx, GL_INVALID_ENUM,
2392 "glGetFramebufferAttachmentParameterivEXT(pname)");
2395 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
2396 if (att->Type == GL_TEXTURE) {
2397 if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
2398 *params = att->Zoffset;
2404 else if (att->Type == GL_NONE) {
2405 _mesa_error(ctx, err,
2406 "glGetFramebufferAttachmentParameterivEXT(pname)");
2409 _mesa_error(ctx, GL_INVALID_ENUM,
2410 "glGetFramebufferAttachmentParameterivEXT(pname)");
2413 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
2414 if (!ctx->Extensions.ARB_framebuffer_object) {
2415 _mesa_error(ctx, GL_INVALID_ENUM,
2416 "glGetFramebufferAttachmentParameterivEXT(pname)");
2418 else if (att->Type == GL_NONE) {
2419 _mesa_error(ctx, err,
2420 "glGetFramebufferAttachmentParameterivEXT(pname)");
2423 if (ctx->Extensions.EXT_framebuffer_sRGB) {
2424 *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
2427 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2428 * if the sRGB conversion is unsupported. */
2429 *params = GL_LINEAR;
2433 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
2434 if (!ctx->Extensions.ARB_framebuffer_object) {
2435 _mesa_error(ctx, GL_INVALID_ENUM,
2436 "glGetFramebufferAttachmentParameterivEXT(pname)");
2439 else if (att->Type == GL_NONE) {
2440 _mesa_error(ctx, err,
2441 "glGetFramebufferAttachmentParameterivEXT(pname)");
2444 gl_format format = att->Renderbuffer->Format;
2445 if (format == MESA_FORMAT_S8) {
2449 else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
2450 /* depends on the attachment parameter */
2451 if (attachment == GL_STENCIL_ATTACHMENT) {
2459 *params = _mesa_get_format_datatype(format);
2463 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
2464 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
2465 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
2466 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
2467 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
2468 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
2469 if (!ctx->Extensions.ARB_framebuffer_object) {
2470 _mesa_error(ctx, GL_INVALID_ENUM,
2471 "glGetFramebufferAttachmentParameterivEXT(pname)");
2473 else if (att->Type == GL_NONE) {
2474 _mesa_error(ctx, err,
2475 "glGetFramebufferAttachmentParameterivEXT(pname)");
2477 else if (att->Texture) {
2478 const struct gl_texture_image *texImage =
2479 _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
2482 *params = get_component_bits(pname, texImage->_BaseFormat,
2483 texImage->TexFormat);
2489 else if (att->Renderbuffer) {
2490 *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
2491 att->Renderbuffer->Format);
2494 _mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:"
2495 " invalid FBO attachment structure");
2499 _mesa_error(ctx, GL_INVALID_ENUM,
2500 "glGetFramebufferAttachmentParameterivEXT(pname)");
2507 _mesa_GenerateMipmapEXT(GLenum target)
2509 struct gl_texture_image *srcImage;
2510 struct gl_texture_object *texObj;
2513 GET_CURRENT_CONTEXT(ctx);
2515 ASSERT_OUTSIDE_BEGIN_END(ctx);
2516 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2524 case GL_TEXTURE_CUBE_MAP:
2525 error = !ctx->Extensions.ARB_texture_cube_map;
2527 case GL_TEXTURE_1D_ARRAY:
2528 case GL_TEXTURE_2D_ARRAY:
2529 error = !ctx->Extensions.EXT_texture_array;
2536 _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
2537 _mesa_lookup_enum_by_nr(target));
2541 texObj = _mesa_get_current_tex_object(ctx, target);
2543 if (texObj->BaseLevel >= texObj->MaxLevel) {
2548 if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
2549 !_mesa_cube_complete(texObj)) {
2550 _mesa_error(ctx, GL_INVALID_OPERATION,
2551 "glGenerateMipmap(incomplete cube map)");
2555 _mesa_lock_texture(ctx, texObj);
2557 srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
2559 _mesa_unlock_texture(ctx, texObj);
2563 if (target == GL_TEXTURE_CUBE_MAP) {
2565 for (face = 0; face < 6; face++)
2566 ctx->Driver.GenerateMipmap(ctx,
2567 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
2571 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2573 _mesa_unlock_texture(ctx, texObj);
2577 #if FEATURE_EXT_framebuffer_blit
2579 static const struct gl_renderbuffer_attachment *
2580 find_attachment(const struct gl_framebuffer *fb,
2581 const struct gl_renderbuffer *rb)
2584 for (i = 0; i < Elements(fb->Attachment); i++) {
2585 if (fb->Attachment[i].Renderbuffer == rb)
2586 return &fb->Attachment[i];
2593 * Helper function for checking if the datatypes of color buffers are
2594 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2596 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2597 * and any of the following conditions hold:
2598 * - The read buffer contains fixed-point or floating-point values and any
2599 * draw buffer contains neither fixed-point nor floating-point values.
2600 * - The read buffer contains unsigned integer values and any draw buffer
2601 * does not contain unsigned integer values.
2602 * - The read buffer contains signed integer values and any draw buffer
2603 * does not contain signed integer values."
2606 compatible_color_datatypes(gl_format srcFormat, gl_format dstFormat)
2608 GLenum srcType = _mesa_get_format_datatype(srcFormat);
2609 GLenum dstType = _mesa_get_format_datatype(dstFormat);
2611 if (srcType != GL_INT && srcType != GL_UNSIGNED_INT) {
2612 assert(srcType == GL_UNSIGNED_NORMALIZED ||
2613 srcType == GL_SIGNED_NORMALIZED ||
2614 srcType == GL_FLOAT);
2615 /* Boil any of those types down to GL_FLOAT */
2619 if (dstType != GL_INT && dstType != GL_UNSIGNED_INT) {
2620 assert(dstType == GL_UNSIGNED_NORMALIZED ||
2621 dstType == GL_SIGNED_NORMALIZED ||
2622 dstType == GL_FLOAT);
2623 /* Boil any of those types down to GL_FLOAT */
2627 return srcType == dstType;
2632 * Blit rectangular region, optionally from one framebuffer to another.
2634 * Note, if the src buffer is multisampled and the dest is not, this is
2635 * when the samples must be resolved to a single color.
2638 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
2639 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
2640 GLbitfield mask, GLenum filter)
2642 const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
2643 GL_DEPTH_BUFFER_BIT |
2644 GL_STENCIL_BUFFER_BIT);
2645 const struct gl_framebuffer *readFb, *drawFb;
2646 const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
2647 GET_CURRENT_CONTEXT(ctx);
2649 ASSERT_OUTSIDE_BEGIN_END(ctx);
2650 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2652 if (MESA_VERBOSE & VERBOSE_API)
2654 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2655 srcX0, srcY0, srcX1, srcY1,
2656 dstX0, dstY0, dstX1, dstY1,
2657 mask, _mesa_lookup_enum_by_nr(filter));
2659 if (ctx->NewState) {
2660 _mesa_update_state(ctx);
2663 readFb = ctx->ReadBuffer;
2664 drawFb = ctx->DrawBuffer;
2666 if (!readFb || !drawFb) {
2667 /* This will normally never happen but someday we may want to
2668 * support MakeCurrent() with no drawables.
2673 /* check for complete framebuffers */
2674 if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
2675 readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2676 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2677 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2681 if (filter != GL_NEAREST && filter != GL_LINEAR) {
2682 _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
2686 if (mask & ~legalMaskBits) {
2687 _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
2691 /* depth/stencil must be blitted with nearest filtering */
2692 if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
2693 && filter != GL_NEAREST) {
2694 _mesa_error(ctx, GL_INVALID_OPERATION,
2695 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2699 /* get color read/draw renderbuffers */
2700 if (mask & GL_COLOR_BUFFER_BIT) {
2701 colorReadRb = readFb->_ColorReadBuffer;
2702 colorDrawRb = drawFb->_ColorDrawBuffers[0];
2704 /* From the EXT_framebuffer_object spec:
2706 * "If a buffer is specified in <mask> and does not exist in both
2707 * the read and draw framebuffers, the corresponding bit is silently
2710 if ((colorReadRb == NULL) || (colorDrawRb == NULL)) {
2711 colorReadRb = colorDrawRb = NULL;
2712 mask &= ~GL_COLOR_BUFFER_BIT;
2714 else if (!compatible_color_datatypes(colorReadRb->Format,
2715 colorDrawRb->Format)) {
2716 _mesa_error(ctx, GL_INVALID_OPERATION,
2717 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
2722 colorReadRb = colorDrawRb = NULL;
2725 if (mask & GL_STENCIL_BUFFER_BIT) {
2726 struct gl_renderbuffer *readRb =
2727 readFb->Attachment[BUFFER_STENCIL].Renderbuffer;
2728 struct gl_renderbuffer *drawRb =
2729 drawFb->Attachment[BUFFER_STENCIL].Renderbuffer;
2731 /* From the EXT_framebuffer_object spec:
2733 * "If a buffer is specified in <mask> and does not exist in both
2734 * the read and draw framebuffers, the corresponding bit is silently
2737 if ((readRb == NULL) || (drawRb == NULL)) {
2738 mask &= ~GL_STENCIL_BUFFER_BIT;
2740 else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
2741 _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
2742 /* There is no need to check the stencil datatype here, because
2743 * there is only one: GL_UNSIGNED_INT.
2745 _mesa_error(ctx, GL_INVALID_OPERATION,
2746 "glBlitFramebufferEXT(stencil buffer size mismatch)");
2751 if (mask & GL_DEPTH_BUFFER_BIT) {
2752 struct gl_renderbuffer *readRb =
2753 readFb->Attachment[BUFFER_DEPTH].Renderbuffer;
2754 struct gl_renderbuffer *drawRb =
2755 drawFb->Attachment[BUFFER_DEPTH].Renderbuffer;
2757 /* From the EXT_framebuffer_object spec:
2759 * "If a buffer is specified in <mask> and does not exist in both
2760 * the read and draw framebuffers, the corresponding bit is silently
2763 if ((readRb == NULL) || (drawRb == NULL)) {
2764 mask &= ~GL_DEPTH_BUFFER_BIT;
2766 else if ((_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
2767 _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) ||
2768 (_mesa_get_format_datatype(readRb->Format) !=
2769 _mesa_get_format_datatype(drawRb->Format))) {
2770 _mesa_error(ctx, GL_INVALID_OPERATION,
2771 "glBlitFramebufferEXT(depth buffer format mismatch)");
2776 if (readFb->Visual.samples > 0 &&
2777 drawFb->Visual.samples > 0 &&
2778 readFb->Visual.samples != drawFb->Visual.samples) {
2779 _mesa_error(ctx, GL_INVALID_OPERATION,
2780 "glBlitFramebufferEXT(mismatched samples)");
2784 /* extra checks for multisample copies... */
2785 if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
2786 /* src and dest region sizes must be the same */
2787 if (srcX1 - srcX0 != dstX1 - dstX0 ||
2788 srcY1 - srcY0 != dstY1 - dstY0) {
2789 _mesa_error(ctx, GL_INVALID_OPERATION,
2790 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2794 /* color formats must match */
2797 colorReadRb->Format != colorDrawRb->Format) {
2798 _mesa_error(ctx, GL_INVALID_OPERATION,
2799 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2804 if (filter == GL_LINEAR && (mask & GL_COLOR_BUFFER_BIT)) {
2805 /* 3.1 spec, page 199:
2806 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
2807 * if filter is LINEAR and read buffer contains integer data."
2809 GLenum type = _mesa_get_format_datatype(colorReadRb->Format);
2810 if (type == GL_INT || type == GL_UNSIGNED_INT) {
2811 _mesa_error(ctx, GL_INVALID_OPERATION,
2812 "glBlitFramebufferEXT(integer color type)");
2817 if (!ctx->Extensions.EXT_framebuffer_blit) {
2818 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
2824 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2826 srcX0, srcY0, srcX1, srcY1,
2827 dstX0, dstY0, dstX1, dstY1,
2830 const struct gl_renderbuffer_attachment *att;
2832 att = find_attachment(readFb, colorReadRb);
2833 printf(" Src FBO %u RB %u (%dx%d) ",
2834 readFb->Name, colorReadRb->Name,
2835 colorReadRb->Width, colorReadRb->Height);
2836 if (att && att->Texture) {
2837 printf("Tex %u tgt 0x%x level %u face %u",
2839 att->Texture->Target,
2845 att = find_attachment(drawFb, colorDrawRb);
2846 printf(" Dst FBO %u RB %u (%dx%d) ",
2847 drawFb->Name, colorDrawRb->Name,
2848 colorDrawRb->Width, colorDrawRb->Height);
2849 if (att && att->Texture) {
2850 printf("Tex %u tgt 0x%x level %u face %u",
2852 att->Texture->Target,
2864 ASSERT(ctx->Driver.BlitFramebuffer);
2865 ctx->Driver.BlitFramebuffer(ctx,
2866 srcX0, srcY0, srcX1, srcY1,
2867 dstX0, dstY0, dstX1, dstY1,
2870 #endif /* FEATURE_EXT_framebuffer_blit */
2873 #if FEATURE_ARB_geometry_shader4
2875 _mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
2876 GLuint texture, GLint level)
2878 GET_CURRENT_CONTEXT(ctx);
2879 _mesa_error(ctx, GL_INVALID_OPERATION,
2880 "glFramebufferTextureARB "
2881 "not implemented!");
2886 _mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
2887 GLuint texture, GLint level, GLenum face)
2889 GET_CURRENT_CONTEXT(ctx);
2890 _mesa_error(ctx, GL_INVALID_OPERATION,
2891 "glFramebufferTextureFaceARB "
2892 "not implemented!");
2894 #endif /* FEATURE_ARB_geometry_shader4 */