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"
43 #include "mfeatures.h"
45 #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 * Is the given FBO a user-created FBO?
85 static inline GLboolean
86 is_user_fbo(const struct gl_framebuffer *fb)
93 * Is the given FBO a window system FBO (like an X window)?
95 static inline GLboolean
96 is_winsys_fbo(const struct gl_framebuffer *fb)
103 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
109 delete_dummy_framebuffer(struct gl_framebuffer *fb)
116 _mesa_init_fbobjects(struct gl_context *ctx)
118 _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
119 _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
120 _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
121 DummyFramebuffer.Delete = delete_dummy_framebuffer;
122 DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
123 IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
126 struct gl_framebuffer *
127 _mesa_get_incomplete_framebuffer(void)
129 return &IncompleteFramebuffer;
133 * Helper routine for getting a gl_renderbuffer.
135 struct gl_renderbuffer *
136 _mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
138 struct gl_renderbuffer *rb;
143 rb = (struct gl_renderbuffer *)
144 _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
150 * Helper routine for getting a gl_framebuffer.
152 struct gl_framebuffer *
153 _mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
155 struct gl_framebuffer *fb;
160 fb = (struct gl_framebuffer *)
161 _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
167 * Mark the given framebuffer as invalid. This will force the
168 * test for framebuffer completeness to be done before the framebuffer
172 invalidate_framebuffer(struct gl_framebuffer *fb)
174 fb->_Status = 0; /* "indeterminate" */
179 * Return the gl_framebuffer object which corresponds to the given
180 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
181 * Check support for GL_EXT_framebuffer_blit to determine if certain
183 * \return gl_framebuffer pointer or NULL if target is illegal
185 static struct gl_framebuffer *
186 get_framebuffer_target(struct gl_context *ctx, GLenum target)
189 case GL_DRAW_FRAMEBUFFER:
190 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
191 ? ctx->DrawBuffer : NULL;
192 case GL_READ_FRAMEBUFFER:
193 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
194 ? ctx->ReadBuffer : NULL;
195 case GL_FRAMEBUFFER_EXT:
196 return ctx->DrawBuffer;
204 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
205 * gl_renderbuffer_attachment object.
206 * This function is only used for user-created FB objects, not the
207 * default / window-system FB object.
208 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
209 * the depth buffer attachment point.
211 struct gl_renderbuffer_attachment *
212 _mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
217 assert(is_user_fbo(fb));
219 switch (attachment) {
220 case GL_COLOR_ATTACHMENT0_EXT:
221 case GL_COLOR_ATTACHMENT1_EXT:
222 case GL_COLOR_ATTACHMENT2_EXT:
223 case GL_COLOR_ATTACHMENT3_EXT:
224 case GL_COLOR_ATTACHMENT4_EXT:
225 case GL_COLOR_ATTACHMENT5_EXT:
226 case GL_COLOR_ATTACHMENT6_EXT:
227 case GL_COLOR_ATTACHMENT7_EXT:
228 case GL_COLOR_ATTACHMENT8_EXT:
229 case GL_COLOR_ATTACHMENT9_EXT:
230 case GL_COLOR_ATTACHMENT10_EXT:
231 case GL_COLOR_ATTACHMENT11_EXT:
232 case GL_COLOR_ATTACHMENT12_EXT:
233 case GL_COLOR_ATTACHMENT13_EXT:
234 case GL_COLOR_ATTACHMENT14_EXT:
235 case GL_COLOR_ATTACHMENT15_EXT:
236 /* Only OpenGL ES 1.x forbids color attachments other than
237 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
240 i = attachment - GL_COLOR_ATTACHMENT0_EXT;
241 if (i >= ctx->Const.MaxColorAttachments
242 || (i > 0 && ctx->API == API_OPENGLES)) {
245 return &fb->Attachment[BUFFER_COLOR0 + i];
246 case GL_DEPTH_STENCIL_ATTACHMENT:
247 if (ctx->API != API_OPENGL)
250 case GL_DEPTH_ATTACHMENT_EXT:
251 return &fb->Attachment[BUFFER_DEPTH];
252 case GL_STENCIL_ATTACHMENT_EXT:
253 return &fb->Attachment[BUFFER_STENCIL];
261 * As above, but only used for getting attachments of the default /
262 * window-system framebuffer (not user-created framebuffer objects).
264 static struct gl_renderbuffer_attachment *
265 _mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
268 assert(is_winsys_fbo(fb));
270 switch (attachment) {
272 return &fb->Attachment[BUFFER_FRONT_LEFT];
274 return &fb->Attachment[BUFFER_FRONT_RIGHT];
276 return &fb->Attachment[BUFFER_BACK_LEFT];
278 return &fb->Attachment[BUFFER_BACK_RIGHT];
280 if (fb->Visual.numAuxBuffers == 1) {
281 return &fb->Attachment[BUFFER_AUX0];
285 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
287 * "If the default framebuffer is bound to target, then attachment must
288 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
289 * identifying a color buffer; DEPTH, identifying the depth buffer; or
290 * STENCIL, identifying the stencil buffer."
292 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
293 * language. However, revision #33 of the ARB_framebuffer_object spec
296 * "If the default framebuffer is bound to <target>, then <attachment>
297 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
298 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
299 * depth buffer, or the stencil buffer, and <pname> may be
300 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
301 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
303 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
304 * from glext.h, so shipping apps should not use those values.
306 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
307 * support queries of the window system FBO.
310 return &fb->Attachment[BUFFER_DEPTH];
312 return &fb->Attachment[BUFFER_STENCIL];
321 * Remove any texture or renderbuffer attached to the given attachment
322 * point. Update reference counts, etc.
325 _mesa_remove_attachment(struct gl_context *ctx,
326 struct gl_renderbuffer_attachment *att)
328 if (att->Type == GL_TEXTURE) {
329 ASSERT(att->Texture);
330 if (ctx->Driver.FinishRenderTexture) {
331 /* tell driver that we're done rendering to this texture. */
332 ctx->Driver.FinishRenderTexture(ctx, att);
334 _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
335 ASSERT(!att->Texture);
337 if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
338 ASSERT(!att->Texture);
339 _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
340 ASSERT(!att->Renderbuffer);
343 att->Complete = GL_TRUE;
348 * Bind a texture object to an attachment point.
349 * The previous binding, if any, will be removed first.
352 _mesa_set_texture_attachment(struct gl_context *ctx,
353 struct gl_framebuffer *fb,
354 struct gl_renderbuffer_attachment *att,
355 struct gl_texture_object *texObj,
356 GLenum texTarget, GLuint level, GLuint zoffset)
358 if (att->Texture == texObj) {
359 /* re-attaching same texture */
360 ASSERT(att->Type == GL_TEXTURE);
361 if (ctx->Driver.FinishRenderTexture)
362 ctx->Driver.FinishRenderTexture(ctx, att);
366 if (ctx->Driver.FinishRenderTexture && att->Texture)
367 ctx->Driver.FinishRenderTexture(ctx, att);
368 _mesa_remove_attachment(ctx, att);
369 att->Type = GL_TEXTURE;
370 assert(!att->Texture);
371 _mesa_reference_texobj(&att->Texture, texObj);
374 /* always update these fields */
375 att->TextureLevel = level;
376 att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
377 att->Zoffset = zoffset;
378 att->Complete = GL_FALSE;
380 if (_mesa_get_attachment_teximage(att)) {
381 ctx->Driver.RenderTexture(ctx, fb, att);
384 invalidate_framebuffer(fb);
389 * Bind a renderbuffer to an attachment point.
390 * The previous binding, if any, will be removed first.
393 _mesa_set_renderbuffer_attachment(struct gl_context *ctx,
394 struct gl_renderbuffer_attachment *att,
395 struct gl_renderbuffer *rb)
397 /* XXX check if re-doing same attachment, exit early */
398 _mesa_remove_attachment(ctx, att);
399 att->Type = GL_RENDERBUFFER_EXT;
400 att->Texture = NULL; /* just to be safe */
401 att->Complete = GL_FALSE;
402 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
407 * Fallback for ctx->Driver.FramebufferRenderbuffer()
408 * Attach a renderbuffer object to a framebuffer object.
411 _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
412 struct gl_framebuffer *fb,
413 GLenum attachment, struct gl_renderbuffer *rb)
415 struct gl_renderbuffer_attachment *att;
417 _glthread_LOCK_MUTEX(fb->Mutex);
419 att = _mesa_get_attachment(ctx, fb, attachment);
422 _mesa_set_renderbuffer_attachment(ctx, att, rb);
423 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
424 /* do stencil attachment here (depth already done above) */
425 att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
427 _mesa_set_renderbuffer_attachment(ctx, att, rb);
429 rb->AttachedAnytime = GL_TRUE;
432 _mesa_remove_attachment(ctx, att);
435 invalidate_framebuffer(fb);
437 _glthread_UNLOCK_MUTEX(fb->Mutex);
442 * Fallback for ctx->Driver.ValidateFramebuffer()
443 * Check if the renderbuffer's formats are supported by the software
445 * Drivers should probably override this.
448 _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
451 for (buf = 0; buf < BUFFER_COUNT; buf++) {
452 const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
454 switch (rb->_BaseFormat) {
456 case GL_LUMINANCE_ALPHA:
461 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
465 switch (rb->Format) {
466 /* XXX This list is likely incomplete. */
467 case MESA_FORMAT_RGB9_E5_FLOAT:
468 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
471 /* render buffer format is supported by software rendering */
483 att_incomplete(const char *msg)
486 _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
497 fbo_incomplete(const char *msg, int index)
500 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
509 * Is the given base format a legal format for a color renderbuffer?
512 _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
514 switch (baseFormat) {
519 case GL_LUMINANCE_ALPHA:
522 return ctx->Extensions.ARB_framebuffer_object;
525 return ctx->Extensions.ARB_texture_rg;
533 * Is the given base format a legal format for a depth/stencil renderbuffer?
536 is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
538 switch (baseFormat) {
539 case GL_DEPTH_COMPONENT:
540 case GL_DEPTH_STENCIL_EXT:
549 * Test if an attachment point is complete and update its Complete field.
550 * \param format if GL_COLOR, this is a color attachment point,
551 * if GL_DEPTH, this is a depth component attachment point,
552 * if GL_STENCIL, this is a stencil component attachment point.
555 test_attachment_completeness(const struct gl_context *ctx, GLenum format,
556 struct gl_renderbuffer_attachment *att)
558 assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
560 /* assume complete */
561 att->Complete = GL_TRUE;
563 /* Look for reasons why the attachment might be incomplete */
564 if (att->Type == GL_TEXTURE) {
565 const struct gl_texture_object *texObj = att->Texture;
566 struct gl_texture_image *texImage;
570 att_incomplete("no texobj");
571 att->Complete = GL_FALSE;
575 texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
577 att_incomplete("no teximage");
578 att->Complete = GL_FALSE;
581 if (texImage->Width < 1 || texImage->Height < 1) {
582 att_incomplete("teximage width/height=0");
583 printf("texobj = %u\n", texObj->Name);
584 printf("level = %d\n", att->TextureLevel);
585 att->Complete = GL_FALSE;
588 if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
589 att_incomplete("bad z offset");
590 att->Complete = GL_FALSE;
594 baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
596 if (format == GL_COLOR) {
597 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
598 att_incomplete("bad format");
599 att->Complete = GL_FALSE;
602 if (_mesa_is_format_compressed(texImage->TexFormat)) {
603 att_incomplete("compressed internalformat");
604 att->Complete = GL_FALSE;
608 else if (format == GL_DEPTH) {
609 if (baseFormat == GL_DEPTH_COMPONENT) {
612 else if (ctx->Extensions.EXT_packed_depth_stencil &&
613 ctx->Extensions.ARB_depth_texture &&
614 baseFormat == GL_DEPTH_STENCIL_EXT) {
618 att->Complete = GL_FALSE;
619 att_incomplete("bad depth format");
624 ASSERT(format == GL_STENCIL);
625 if (ctx->Extensions.EXT_packed_depth_stencil &&
626 ctx->Extensions.ARB_depth_texture &&
627 baseFormat == GL_DEPTH_STENCIL_EXT) {
631 /* no such thing as stencil-only textures */
632 att_incomplete("illegal stencil texture");
633 att->Complete = GL_FALSE;
638 else if (att->Type == GL_RENDERBUFFER_EXT) {
639 const GLenum baseFormat =
640 _mesa_get_format_base_format(att->Renderbuffer->Format);
642 ASSERT(att->Renderbuffer);
643 if (!att->Renderbuffer->InternalFormat ||
644 att->Renderbuffer->Width < 1 ||
645 att->Renderbuffer->Height < 1) {
646 att_incomplete("0x0 renderbuffer");
647 att->Complete = GL_FALSE;
650 if (format == GL_COLOR) {
651 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
652 att_incomplete("bad renderbuffer color format");
653 att->Complete = GL_FALSE;
657 else if (format == GL_DEPTH) {
658 if (baseFormat == GL_DEPTH_COMPONENT) {
661 else if (ctx->Extensions.EXT_packed_depth_stencil &&
662 baseFormat == GL_DEPTH_STENCIL_EXT) {
666 att_incomplete("bad renderbuffer depth format");
667 att->Complete = GL_FALSE;
672 assert(format == GL_STENCIL);
673 if (baseFormat == GL_STENCIL_INDEX) {
676 else if (ctx->Extensions.EXT_packed_depth_stencil &&
677 baseFormat == GL_DEPTH_STENCIL_EXT) {
681 att->Complete = GL_FALSE;
682 att_incomplete("bad renderbuffer stencil format");
688 ASSERT(att->Type == GL_NONE);
696 * Test if the given framebuffer object is complete and update its
697 * Status field with the results.
698 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
699 * driver to make hardware-specific validation/completeness checks.
700 * Also update the framebuffer's Width and Height fields if the
701 * framebuffer is complete.
704 _mesa_test_framebuffer_completeness(struct gl_context *ctx,
705 struct gl_framebuffer *fb)
708 GLenum intFormat = GL_NONE; /* color buffers' internal format */
709 GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
710 GLint numSamples = -1;
714 assert(is_user_fbo(fb));
720 /* Start at -2 to more easily loop over all attachment points.
725 for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
726 struct gl_renderbuffer_attachment *att;
731 * XXX for ARB_fbo, only check color buffers that are named by
732 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
735 /* check for attachment completeness
738 att = &fb->Attachment[BUFFER_DEPTH];
739 test_attachment_completeness(ctx, GL_DEPTH, att);
740 if (!att->Complete) {
741 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
742 fbo_incomplete("depth attachment incomplete", -1);
747 att = &fb->Attachment[BUFFER_STENCIL];
748 test_attachment_completeness(ctx, GL_STENCIL, att);
749 if (!att->Complete) {
750 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
751 fbo_incomplete("stencil attachment incomplete", -1);
756 att = &fb->Attachment[BUFFER_COLOR0 + i];
757 test_attachment_completeness(ctx, GL_COLOR, att);
758 if (!att->Complete) {
759 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
760 fbo_incomplete("color attachment incomplete", i);
765 /* get width, height, format of the renderbuffer/texture
767 if (att->Type == GL_TEXTURE) {
768 const struct gl_texture_image *texImg =
769 _mesa_get_attachment_teximage(att);
770 minWidth = MIN2(minWidth, texImg->Width);
771 maxWidth = MAX2(maxWidth, texImg->Width);
772 minHeight = MIN2(minHeight, texImg->Height);
773 maxHeight = MAX2(maxHeight, texImg->Height);
774 f = texImg->_BaseFormat;
775 attFormat = texImg->TexFormat;
777 if (!_mesa_is_legal_color_format(ctx, f) &&
778 !is_legal_depth_format(ctx, f)) {
779 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
780 fbo_incomplete("texture attachment incomplete", -1);
784 else if (att->Type == GL_RENDERBUFFER_EXT) {
785 minWidth = MIN2(minWidth, att->Renderbuffer->Width);
786 maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
787 minHeight = MIN2(minHeight, att->Renderbuffer->Height);
788 maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
789 f = att->Renderbuffer->InternalFormat;
790 attFormat = att->Renderbuffer->Format;
794 assert(att->Type == GL_NONE);
798 if (att->Renderbuffer && numSamples < 0) {
800 numSamples = att->Renderbuffer->NumSamples;
803 /* check if integer color */
804 fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
806 /* Error-check width, height, format, samples
808 if (numImages == 1) {
809 /* save format, num samples */
815 if (!ctx->Extensions.ARB_framebuffer_object) {
816 /* check that width, height, format are same */
817 if (minWidth != maxWidth || minHeight != maxHeight) {
818 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
819 fbo_incomplete("width or height mismatch", -1);
822 /* check that all color buffer have same format */
823 if (intFormat != GL_NONE && f != intFormat) {
824 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
825 fbo_incomplete("format mismatch", -1);
829 if (att->Renderbuffer &&
830 att->Renderbuffer->NumSamples != numSamples) {
831 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
832 fbo_incomplete("inconsistant number of samples", i);
840 if (ctx->API == API_OPENGL && !ctx->Extensions.ARB_ES2_compatibility) {
841 /* Check that all DrawBuffers are present */
842 for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
843 if (fb->ColorDrawBuffer[j] != GL_NONE) {
844 const struct gl_renderbuffer_attachment *att
845 = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
847 if (att->Type == GL_NONE) {
848 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
849 fbo_incomplete("missing drawbuffer", j);
855 /* Check that the ReadBuffer is present */
856 if (fb->ColorReadBuffer != GL_NONE) {
857 const struct gl_renderbuffer_attachment *att
858 = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
860 if (att->Type == GL_NONE) {
861 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
862 fbo_incomplete("missing readbuffer", -1);
871 if (numImages == 0) {
872 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
873 fbo_incomplete("no attachments", -1);
877 /* Provisionally set status = COMPLETE ... */
878 fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
880 /* ... but the driver may say the FB is incomplete.
881 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
884 if (ctx->Driver.ValidateFramebuffer) {
885 ctx->Driver.ValidateFramebuffer(ctx, fb);
886 if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
887 fbo_incomplete("driver marked FBO as incomplete", -1);
891 if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
893 * Note that if ARB_framebuffer_object is supported and the attached
894 * renderbuffers/textures are different sizes, the framebuffer
895 * width/height will be set to the smallest width/height.
897 fb->Width = minWidth;
898 fb->Height = minHeight;
900 /* finally, update the visual info for the framebuffer */
901 _mesa_update_framebuffer_visual(ctx, fb);
907 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
909 GET_CURRENT_CONTEXT(ctx);
910 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
912 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
913 if (rb != NULL && rb != &DummyRenderbuffer)
921 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
923 struct gl_renderbuffer *newRb;
924 GET_CURRENT_CONTEXT(ctx);
926 ASSERT_OUTSIDE_BEGIN_END(ctx);
928 if (target != GL_RENDERBUFFER_EXT) {
929 _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
933 /* No need to flush here since the render buffer binding has no
934 * effect on rendering state.
938 newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
939 if (newRb == &DummyRenderbuffer) {
940 /* ID was reserved, but no real renderbuffer object made yet */
943 else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
944 /* All RB IDs must be Gen'd */
945 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
950 /* create new renderbuffer object */
951 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
953 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
956 ASSERT(newRb->AllocStorage);
957 _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
958 newRb->RefCount = 1; /* referenced by hash table */
965 ASSERT(newRb != &DummyRenderbuffer);
967 _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
972 * If the given renderbuffer is anywhere attached to the framebuffer, detach
974 * This is used when a renderbuffer object is deleted.
975 * The spec calls for unbinding.
978 detach_renderbuffer(struct gl_context *ctx,
979 struct gl_framebuffer *fb,
980 struct gl_renderbuffer *rb)
983 for (i = 0; i < BUFFER_COUNT; i++) {
984 if (fb->Attachment[i].Renderbuffer == rb) {
985 _mesa_remove_attachment(ctx, &fb->Attachment[i]);
988 invalidate_framebuffer(fb);
993 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
996 GET_CURRENT_CONTEXT(ctx);
998 ASSERT_OUTSIDE_BEGIN_END(ctx);
999 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1001 for (i = 0; i < n; i++) {
1002 if (renderbuffers[i] > 0) {
1003 struct gl_renderbuffer *rb;
1004 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
1006 /* check if deleting currently bound renderbuffer object */
1007 if (rb == ctx->CurrentRenderbuffer) {
1009 ASSERT(rb->RefCount >= 2);
1010 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
1013 if (is_user_fbo(ctx->DrawBuffer)) {
1014 detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
1016 if (is_user_fbo(ctx->ReadBuffer)
1017 && ctx->ReadBuffer != ctx->DrawBuffer) {
1018 detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
1021 /* Remove from hash table immediately, to free the ID.
1022 * But the object will not be freed until it's no longer
1023 * referenced anywhere else.
1025 _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
1027 if (rb != &DummyRenderbuffer) {
1028 /* no longer referenced by hash table */
1029 _mesa_reference_renderbuffer(&rb, NULL);
1038 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
1040 GET_CURRENT_CONTEXT(ctx);
1044 ASSERT_OUTSIDE_BEGIN_END(ctx);
1047 _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
1054 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
1056 for (i = 0; i < n; i++) {
1057 GLuint name = first + i;
1058 renderbuffers[i] = name;
1059 /* insert dummy placeholder into hash table */
1060 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1061 _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
1062 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1068 * Given an internal format token for a render buffer, return the
1069 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1070 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1071 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1073 * This is similar to _mesa_base_tex_format() but the set of valid
1074 * internal formats is different.
1076 * Note that even if a format is determined to be legal here, validation
1077 * of the FBO may fail if the format is not supported by the driver/GPU.
1079 * \param internalFormat as passed to glRenderbufferStorage()
1080 * \return the base internal format, or 0 if internalFormat is illegal
1083 _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
1086 * Notes: some formats such as alpha, luminance, etc. were added
1087 * with GL_ARB_framebuffer_object.
1089 switch (internalFormat) {
1095 return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1099 case GL_LUMINANCE12:
1100 case GL_LUMINANCE16:
1101 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1102 case GL_LUMINANCE_ALPHA:
1103 case GL_LUMINANCE4_ALPHA4:
1104 case GL_LUMINANCE6_ALPHA2:
1105 case GL_LUMINANCE8_ALPHA8:
1106 case GL_LUMINANCE12_ALPHA4:
1107 case GL_LUMINANCE12_ALPHA12:
1108 case GL_LUMINANCE16_ALPHA16:
1109 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1113 case GL_INTENSITY12:
1114 case GL_INTENSITY16:
1115 return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1134 case GL_SRGB8_ALPHA8_EXT:
1136 case GL_STENCIL_INDEX:
1137 case GL_STENCIL_INDEX1_EXT:
1138 case GL_STENCIL_INDEX4_EXT:
1139 case GL_STENCIL_INDEX8_EXT:
1140 case GL_STENCIL_INDEX16_EXT:
1141 return GL_STENCIL_INDEX;
1142 case GL_DEPTH_COMPONENT:
1143 case GL_DEPTH_COMPONENT16:
1144 case GL_DEPTH_COMPONENT24:
1145 case GL_DEPTH_COMPONENT32:
1146 return GL_DEPTH_COMPONENT;
1147 case GL_DEPTH_STENCIL_EXT:
1148 case GL_DEPTH24_STENCIL8_EXT:
1149 if (ctx->Extensions.EXT_packed_depth_stencil)
1150 return GL_DEPTH_STENCIL_EXT;
1153 case GL_DEPTH_COMPONENT32F:
1154 if (ctx->Extensions.ARB_depth_buffer_float)
1155 return GL_DEPTH_COMPONENT;
1158 case GL_DEPTH32F_STENCIL8:
1159 if (ctx->Extensions.ARB_depth_buffer_float)
1160 return GL_DEPTH_STENCIL;
1166 return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
1170 return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
1171 /* signed normalized texture formats */
1175 return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
1179 return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
1182 case GL_RGB16_SNORM:
1183 return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
1185 case GL_RGBA8_SNORM:
1186 case GL_RGBA16_SNORM:
1187 return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
1188 case GL_ALPHA_SNORM:
1189 case GL_ALPHA8_SNORM:
1190 case GL_ALPHA16_SNORM:
1191 return ctx->Extensions.EXT_texture_snorm &&
1192 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1193 case GL_LUMINANCE_SNORM:
1194 case GL_LUMINANCE8_SNORM:
1195 case GL_LUMINANCE16_SNORM:
1196 return ctx->Extensions.EXT_texture_snorm &&
1197 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1198 case GL_LUMINANCE_ALPHA_SNORM:
1199 case GL_LUMINANCE8_ALPHA8_SNORM:
1200 case GL_LUMINANCE16_ALPHA16_SNORM:
1201 return ctx->Extensions.EXT_texture_snorm &&
1202 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1203 case GL_INTENSITY_SNORM:
1204 case GL_INTENSITY8_SNORM:
1205 case GL_INTENSITY16_SNORM:
1206 return ctx->Extensions.EXT_texture_snorm &&
1207 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1210 return ctx->Extensions.ARB_texture_rg &&
1211 ctx->Extensions.ARB_texture_float ? GL_RED : 0;
1214 return ctx->Extensions.ARB_texture_rg &&
1215 ctx->Extensions.ARB_texture_float ? GL_RG : 0;
1218 return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
1221 return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
1222 case GL_ALPHA16F_ARB:
1223 case GL_ALPHA32F_ARB:
1224 return ctx->Extensions.ARB_texture_float &&
1225 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1226 case GL_LUMINANCE16F_ARB:
1227 case GL_LUMINANCE32F_ARB:
1228 return ctx->Extensions.ARB_texture_float &&
1229 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1230 case GL_LUMINANCE_ALPHA16F_ARB:
1231 case GL_LUMINANCE_ALPHA32F_ARB:
1232 return ctx->Extensions.ARB_texture_float &&
1233 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1234 case GL_INTENSITY16F_ARB:
1235 case GL_INTENSITY32F_ARB:
1236 return ctx->Extensions.ARB_texture_float &&
1237 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1239 return ctx->Extensions.EXT_texture_shared_exponent ? GL_RGB : 0;
1240 case GL_R11F_G11F_B10F:
1241 return ctx->Extensions.EXT_packed_float ? GL_RGB : 0;
1243 case GL_RGBA8UI_EXT:
1244 case GL_RGBA16UI_EXT:
1245 case GL_RGBA32UI_EXT:
1247 case GL_RGBA16I_EXT:
1248 case GL_RGBA32I_EXT:
1249 return ctx->Extensions.EXT_texture_integer ? GL_RGBA : 0;
1252 case GL_RGB16UI_EXT:
1253 case GL_RGB32UI_EXT:
1257 return ctx->Extensions.EXT_texture_integer ? GL_RGB : 0;
1265 return ctx->Extensions.ARB_texture_rg &&
1266 ctx->Extensions.EXT_texture_integer ? GL_RED : 0;
1274 return ctx->Extensions.ARB_texture_rg &&
1275 ctx->Extensions.EXT_texture_integer ? GL_RG : 0;
1277 case GL_INTENSITY8I_EXT:
1278 case GL_INTENSITY8UI_EXT:
1279 case GL_INTENSITY16I_EXT:
1280 case GL_INTENSITY16UI_EXT:
1281 case GL_INTENSITY32I_EXT:
1282 case GL_INTENSITY32UI_EXT:
1283 return ctx->Extensions.EXT_texture_integer &&
1284 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1286 case GL_LUMINANCE8I_EXT:
1287 case GL_LUMINANCE8UI_EXT:
1288 case GL_LUMINANCE16I_EXT:
1289 case GL_LUMINANCE16UI_EXT:
1290 case GL_LUMINANCE32I_EXT:
1291 case GL_LUMINANCE32UI_EXT:
1292 return ctx->Extensions.EXT_texture_integer &&
1293 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1295 case GL_LUMINANCE_ALPHA8I_EXT:
1296 case GL_LUMINANCE_ALPHA8UI_EXT:
1297 case GL_LUMINANCE_ALPHA16I_EXT:
1298 case GL_LUMINANCE_ALPHA16UI_EXT:
1299 case GL_LUMINANCE_ALPHA32I_EXT:
1300 case GL_LUMINANCE_ALPHA32UI_EXT:
1301 return ctx->Extensions.EXT_texture_integer &&
1302 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1305 return ctx->Extensions.ARB_texture_rgb10_a2ui ? GL_RGBA : 0;
1313 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1316 invalidate_rb(GLuint key, void *data, void *userData)
1318 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
1319 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
1321 /* If this is a user-created FBO */
1322 if (is_user_fbo(fb)) {
1324 for (i = 0; i < BUFFER_COUNT; i++) {
1325 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1326 if (att->Type == GL_RENDERBUFFER &&
1327 att->Renderbuffer == rb) {
1328 /* Mark fb status as indeterminate to force re-validation */
1337 /** sentinal value, see below */
1338 #define NO_SAMPLES 1000
1342 * Helper function used by _mesa_RenderbufferStorageEXT() and
1343 * _mesa_RenderbufferStorageMultisample().
1344 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1347 renderbuffer_storage(GLenum target, GLenum internalFormat,
1348 GLsizei width, GLsizei height, GLsizei samples)
1350 const char *func = samples == NO_SAMPLES ?
1351 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1352 struct gl_renderbuffer *rb;
1354 GET_CURRENT_CONTEXT(ctx);
1356 ASSERT_OUTSIDE_BEGIN_END(ctx);
1358 if (target != GL_RENDERBUFFER_EXT) {
1359 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
1363 baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
1364 if (baseFormat == 0) {
1365 _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
1369 if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1370 _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
1374 if (height < 0 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1375 _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
1379 if (samples == NO_SAMPLES) {
1380 /* NumSamples == 0 indicates non-multisampling */
1383 else if (samples > (GLsizei) ctx->Const.MaxSamples) {
1384 /* note: driver may choose to use more samples than what's requested */
1385 _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
1389 rb = ctx->CurrentRenderbuffer;
1391 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
1395 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1397 if (rb->InternalFormat == internalFormat &&
1398 rb->Width == (GLuint) width &&
1399 rb->Height == (GLuint) height) {
1400 /* no change in allocation needed */
1404 /* These MUST get set by the AllocStorage func */
1405 rb->Format = MESA_FORMAT_NONE;
1406 rb->NumSamples = samples;
1408 /* Now allocate the storage */
1409 ASSERT(rb->AllocStorage);
1410 if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
1411 /* No error - check/set fields now */
1412 assert(rb->Format != MESA_FORMAT_NONE);
1413 assert(rb->Width == (GLuint) width);
1414 assert(rb->Height == (GLuint) height);
1415 rb->InternalFormat = internalFormat;
1416 rb->_BaseFormat = baseFormat;
1417 assert(rb->_BaseFormat != 0);
1420 /* Probably ran out of memory - clear the fields */
1423 rb->Format = MESA_FORMAT_NONE;
1424 rb->InternalFormat = GL_NONE;
1425 rb->_BaseFormat = GL_NONE;
1429 /* Invalidate the framebuffers the renderbuffer is attached in. */
1430 if (rb->AttachedAnytime) {
1431 _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
1436 #if FEATURE_OES_EGL_image
1438 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
1440 struct gl_renderbuffer *rb;
1441 GET_CURRENT_CONTEXT(ctx);
1442 ASSERT_OUTSIDE_BEGIN_END(ctx);
1444 if (!ctx->Extensions.OES_EGL_image) {
1445 _mesa_error(ctx, GL_INVALID_OPERATION,
1446 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1450 if (target != GL_RENDERBUFFER) {
1451 _mesa_error(ctx, GL_INVALID_ENUM,
1452 "EGLImageTargetRenderbufferStorageOES");
1456 rb = ctx->CurrentRenderbuffer;
1458 _mesa_error(ctx, GL_INVALID_OPERATION,
1459 "EGLImageTargetRenderbufferStorageOES");
1463 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1465 ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
1471 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1472 * _mesa_GetFramebufferAttachmentParameterivEXT()
1473 * We have to be careful to respect the base format. For example, if a
1474 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1475 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1476 * we need to return zero.
1479 get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
1481 if (_mesa_base_format_has_channel(baseFormat, pname))
1482 return _mesa_get_format_bits(format, pname);
1490 _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1491 GLsizei width, GLsizei height)
1493 /* GL_ARB_fbo says calling this function is equivalent to calling
1494 * glRenderbufferStorageMultisample() with samples=0. We pass in
1495 * a token value here just for error reporting purposes.
1497 renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
1502 _mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
1503 GLenum internalFormat,
1504 GLsizei width, GLsizei height)
1506 renderbuffer_storage(target, internalFormat, width, height, samples);
1511 * OpenGL ES version of glRenderBufferStorage.
1514 _es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1515 GLsizei width, GLsizei height)
1517 switch (internalFormat) {
1519 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1520 /* choose a closest format */
1521 internalFormat = GL_RGB5;
1527 renderbuffer_storage(target, internalFormat, width, height, 0);
1532 _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
1534 struct gl_renderbuffer *rb;
1535 GET_CURRENT_CONTEXT(ctx);
1537 ASSERT_OUTSIDE_BEGIN_END(ctx);
1539 if (target != GL_RENDERBUFFER_EXT) {
1540 _mesa_error(ctx, GL_INVALID_ENUM,
1541 "glGetRenderbufferParameterivEXT(target)");
1545 rb = ctx->CurrentRenderbuffer;
1547 _mesa_error(ctx, GL_INVALID_OPERATION,
1548 "glGetRenderbufferParameterivEXT");
1552 /* No need to flush here since we're just quering state which is
1553 * not effected by rendering.
1557 case GL_RENDERBUFFER_WIDTH_EXT:
1558 *params = rb->Width;
1560 case GL_RENDERBUFFER_HEIGHT_EXT:
1561 *params = rb->Height;
1563 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
1564 *params = rb->InternalFormat;
1566 case GL_RENDERBUFFER_RED_SIZE_EXT:
1567 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1568 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1569 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1570 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1571 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1572 *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
1574 case GL_RENDERBUFFER_SAMPLES:
1575 if (ctx->Extensions.ARB_framebuffer_object) {
1576 *params = rb->NumSamples;
1581 _mesa_error(ctx, GL_INVALID_ENUM,
1582 "glGetRenderbufferParameterivEXT(target)");
1588 GLboolean GLAPIENTRY
1589 _mesa_IsFramebufferEXT(GLuint framebuffer)
1591 GET_CURRENT_CONTEXT(ctx);
1592 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1594 struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
1595 if (rb != NULL && rb != &DummyFramebuffer)
1603 * Check if any of the attachments of the given framebuffer are textures
1604 * (render to texture). Call ctx->Driver.RenderTexture() for such
1608 check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1611 ASSERT(ctx->Driver.RenderTexture);
1613 if (is_winsys_fbo(fb))
1614 return; /* can't render to texture with winsys framebuffers */
1616 for (i = 0; i < BUFFER_COUNT; i++) {
1617 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1618 if (att->Texture && _mesa_get_attachment_teximage(att)) {
1619 ctx->Driver.RenderTexture(ctx, fb, att);
1626 * Examine all the framebuffer's attachments to see if any are textures.
1627 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1628 * notify the device driver that the texture image may have changed.
1631 check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1633 if (is_winsys_fbo(fb))
1634 return; /* can't render to texture with winsys framebuffers */
1636 if (ctx->Driver.FinishRenderTexture) {
1638 for (i = 0; i < BUFFER_COUNT; i++) {
1639 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1640 if (att->Texture && att->Renderbuffer) {
1641 ctx->Driver.FinishRenderTexture(ctx, att);
1649 _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
1651 struct gl_framebuffer *newDrawFb, *newReadFb;
1652 struct gl_framebuffer *oldDrawFb, *oldReadFb;
1653 GLboolean bindReadBuf, bindDrawBuf;
1654 GET_CURRENT_CONTEXT(ctx);
1657 if (ctx->Extensions.ARB_framebuffer_object) {
1658 ASSERT(ctx->Extensions.EXT_framebuffer_object);
1659 ASSERT(ctx->Extensions.EXT_framebuffer_blit);
1663 ASSERT_OUTSIDE_BEGIN_END(ctx);
1665 if (!ctx->Extensions.EXT_framebuffer_object) {
1666 _mesa_error(ctx, GL_INVALID_OPERATION,
1667 "glBindFramebufferEXT(unsupported)");
1672 #if FEATURE_EXT_framebuffer_blit
1673 case GL_DRAW_FRAMEBUFFER_EXT:
1674 if (!ctx->Extensions.EXT_framebuffer_blit) {
1675 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1678 bindDrawBuf = GL_TRUE;
1679 bindReadBuf = GL_FALSE;
1681 case GL_READ_FRAMEBUFFER_EXT:
1682 if (!ctx->Extensions.EXT_framebuffer_blit) {
1683 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1686 bindDrawBuf = GL_FALSE;
1687 bindReadBuf = GL_TRUE;
1690 case GL_FRAMEBUFFER_EXT:
1691 bindDrawBuf = GL_TRUE;
1692 bindReadBuf = GL_TRUE;
1695 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1700 /* Binding a user-created framebuffer object */
1701 newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
1702 if (newDrawFb == &DummyFramebuffer) {
1703 /* ID was reserved, but no real framebuffer object made yet */
1706 else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
1707 /* All FBO IDs must be Gen'd */
1708 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
1713 /* create new framebuffer object */
1714 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
1716 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
1719 _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
1721 newReadFb = newDrawFb;
1724 /* Binding the window system framebuffer (which was originally set
1725 * with MakeCurrent).
1727 newDrawFb = ctx->WinSysDrawBuffer;
1728 newReadFb = ctx->WinSysReadBuffer;
1732 ASSERT(newDrawFb != &DummyFramebuffer);
1734 /* save pointers to current/old framebuffers */
1735 oldDrawFb = ctx->DrawBuffer;
1736 oldReadFb = ctx->ReadBuffer;
1738 /* check if really changing bindings */
1739 if (oldDrawFb == newDrawFb)
1740 bindDrawBuf = GL_FALSE;
1741 if (oldReadFb == newReadFb)
1742 bindReadBuf = GL_FALSE;
1745 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1747 * We also check if we're beginning and/or ending render-to-texture.
1748 * When a framebuffer with texture attachments is unbound, call
1749 * ctx->Driver.FinishRenderTexture().
1750 * When a framebuffer with texture attachments is bound, call
1751 * ctx->Driver.RenderTexture().
1753 * Note that if the ReadBuffer has texture attachments we don't consider
1754 * that a render-to-texture case.
1757 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1759 /* check if old readbuffer was render-to-texture */
1760 check_end_texture_render(ctx, oldReadFb);
1762 _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
1766 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1768 /* check if old read/draw buffers were render-to-texture */
1770 check_end_texture_render(ctx, oldReadFb);
1772 if (oldDrawFb != oldReadFb)
1773 check_end_texture_render(ctx, oldDrawFb);
1775 /* check if newly bound framebuffer has any texture attachments */
1776 check_begin_texture_render(ctx, newDrawFb);
1778 _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
1781 if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
1782 ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
1788 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1791 GET_CURRENT_CONTEXT(ctx);
1793 ASSERT_OUTSIDE_BEGIN_END(ctx);
1794 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1796 for (i = 0; i < n; i++) {
1797 if (framebuffers[i] > 0) {
1798 struct gl_framebuffer *fb;
1799 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1801 ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1803 /* check if deleting currently bound framebuffer object */
1804 if (ctx->Extensions.EXT_framebuffer_blit) {
1805 /* separate draw/read binding points */
1806 if (fb == ctx->DrawBuffer) {
1808 ASSERT(fb->RefCount >= 2);
1809 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
1811 if (fb == ctx->ReadBuffer) {
1813 ASSERT(fb->RefCount >= 2);
1814 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
1818 /* only one binding point for read/draw buffers */
1819 if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
1821 ASSERT(fb->RefCount >= 2);
1822 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1826 /* remove from hash table immediately, to free the ID */
1827 _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1829 if (fb != &DummyFramebuffer) {
1830 /* But the object will not be freed until it's no longer
1831 * bound in any context.
1833 _mesa_reference_framebuffer(&fb, NULL);
1842 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1844 GET_CURRENT_CONTEXT(ctx);
1848 ASSERT_OUTSIDE_BEGIN_END(ctx);
1851 _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1858 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1860 for (i = 0; i < n; i++) {
1861 GLuint name = first + i;
1862 framebuffers[i] = name;
1863 /* insert dummy placeholder into hash table */
1864 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1865 _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1866 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1873 _mesa_CheckFramebufferStatusEXT(GLenum target)
1875 struct gl_framebuffer *buffer;
1876 GET_CURRENT_CONTEXT(ctx);
1878 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1880 buffer = get_framebuffer_target(ctx, target);
1882 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1886 if (is_winsys_fbo(buffer)) {
1887 /* The window system / default framebuffer is always complete */
1888 return GL_FRAMEBUFFER_COMPLETE_EXT;
1891 /* No need to flush here */
1893 if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
1894 _mesa_test_framebuffer_completeness(ctx, buffer);
1897 return buffer->_Status;
1901 * Replicate the src attachment point. Used by framebuffer_texture() when
1902 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1903 * GL_STENCIL_ATTACHMENT.
1906 reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb,
1907 gl_buffer_index dst,
1908 gl_buffer_index src)
1910 struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst];
1911 struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src];
1913 assert(src_att->Texture != NULL);
1914 assert (src_att->Renderbuffer != NULL);
1916 _mesa_reference_texobj(&dst_att->Texture, src_att->Texture);
1917 _mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer);
1918 dst_att->Type = src_att->Type;
1919 dst_att->Complete = src_att->Complete;
1920 dst_att->TextureLevel = src_att->TextureLevel;
1921 dst_att->Zoffset = src_att->Zoffset;
1925 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1928 framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
1929 GLenum attachment, GLenum textarget, GLuint texture,
1930 GLint level, GLint zoffset)
1932 struct gl_renderbuffer_attachment *att;
1933 struct gl_texture_object *texObj = NULL;
1934 struct gl_framebuffer *fb;
1936 ASSERT_OUTSIDE_BEGIN_END(ctx);
1938 fb = get_framebuffer_target(ctx, target);
1940 _mesa_error(ctx, GL_INVALID_ENUM,
1941 "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
1945 /* check framebuffer binding */
1946 if (is_winsys_fbo(fb)) {
1947 _mesa_error(ctx, GL_INVALID_OPERATION,
1948 "glFramebufferTexture%sEXT", caller);
1953 /* The textarget, level, and zoffset parameters are only validated if
1954 * texture is non-zero.
1957 GLboolean err = GL_TRUE;
1959 texObj = _mesa_lookup_texture(ctx, texture);
1960 if (texObj != NULL) {
1961 if (textarget == 0) {
1962 /* XXX what's the purpose of this? */
1963 err = (texObj->Target != GL_TEXTURE_3D) &&
1964 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1965 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
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);
2006 (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
2007 _mesa_error(ctx, GL_INVALID_VALUE,
2008 "glFramebufferTexture%sEXT(level)", caller);
2013 att = _mesa_get_attachment(ctx, fb, attachment);
2015 _mesa_error(ctx, GL_INVALID_ENUM,
2016 "glFramebufferTexture%sEXT(attachment)", caller);
2020 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2022 _glthread_LOCK_MUTEX(fb->Mutex);
2024 if (attachment == GL_DEPTH_ATTACHMENT &&
2025 texObj == fb->Attachment[BUFFER_STENCIL].Texture) {
2026 /* The texture object is already attached to the stencil attachment
2027 * point. Don't create a new renderbuffer; just reuse the stencil
2028 * attachment's. This is required to prevent a GL error in
2029 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2031 reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH,
2033 } else if (attachment == GL_STENCIL_ATTACHMENT &&
2034 texObj== fb->Attachment[BUFFER_DEPTH].Texture) {
2035 /* As above, but with depth and stencil juxtasposed. */
2036 reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL,
2039 _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
2041 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2042 /* Above we created a new renderbuffer and attached it to the
2043 * depth attachment point. Now attach it to the stencil attachment
2046 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2047 reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL,
2052 /* Set the render-to-texture flag. We'll check this flag in
2053 * glTexImage() and friends to determine if we need to revalidate
2054 * any FBOs that might be rendering into this texture.
2055 * This flag never gets cleared since it's non-trivial to determine
2056 * when all FBOs might be done rendering to this texture. That's OK
2057 * though since it's uncommon to render to a texture then repeatedly
2058 * call glTexImage() to change images in the texture.
2060 texObj->_RenderToTexture = GL_TRUE;
2063 _mesa_remove_attachment(ctx, att);
2064 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2065 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2066 _mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]);
2070 invalidate_framebuffer(fb);
2072 _glthread_UNLOCK_MUTEX(fb->Mutex);
2078 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
2079 GLenum textarget, GLuint texture, GLint level)
2081 GET_CURRENT_CONTEXT(ctx);
2086 switch (textarget) {
2090 case GL_TEXTURE_1D_ARRAY:
2091 error = !ctx->Extensions.EXT_texture_array;
2098 _mesa_error(ctx, GL_INVALID_OPERATION,
2099 "glFramebufferTexture1DEXT(textarget=%s)",
2100 _mesa_lookup_enum_by_nr(textarget));
2105 framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
2111 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
2112 GLenum textarget, GLuint texture, GLint level)
2114 GET_CURRENT_CONTEXT(ctx);
2119 switch (textarget) {
2123 case GL_TEXTURE_RECTANGLE:
2124 error = !ctx->Extensions.NV_texture_rectangle;
2126 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
2127 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
2128 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
2129 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
2130 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
2131 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
2132 error = !ctx->Extensions.ARB_texture_cube_map;
2134 case GL_TEXTURE_2D_ARRAY:
2135 error = !ctx->Extensions.EXT_texture_array;
2142 _mesa_error(ctx, GL_INVALID_OPERATION,
2143 "glFramebufferTexture2DEXT(textarget=%s)",
2144 _mesa_lookup_enum_by_nr(textarget));
2149 framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
2155 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
2156 GLenum textarget, GLuint texture,
2157 GLint level, GLint zoffset)
2159 GET_CURRENT_CONTEXT(ctx);
2161 if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
2162 _mesa_error(ctx, GL_INVALID_OPERATION,
2163 "glFramebufferTexture3DEXT(textarget)");
2167 framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
2173 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
2174 GLuint texture, GLint level, GLint layer)
2176 GET_CURRENT_CONTEXT(ctx);
2178 framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
2184 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
2185 GLenum renderbufferTarget,
2186 GLuint renderbuffer)
2188 struct gl_renderbuffer_attachment *att;
2189 struct gl_framebuffer *fb;
2190 struct gl_renderbuffer *rb;
2191 GET_CURRENT_CONTEXT(ctx);
2193 ASSERT_OUTSIDE_BEGIN_END(ctx);
2195 fb = get_framebuffer_target(ctx, target);
2197 _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
2201 if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
2202 _mesa_error(ctx, GL_INVALID_ENUM,
2203 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2207 if (is_winsys_fbo(fb)) {
2208 /* Can't attach new renderbuffers to a window system framebuffer */
2209 _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
2213 att = _mesa_get_attachment(ctx, fb, attachment);
2215 _mesa_error(ctx, GL_INVALID_ENUM,
2216 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2217 _mesa_lookup_enum_by_nr(attachment));
2222 rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
2224 _mesa_error(ctx, GL_INVALID_OPERATION,
2225 "glFramebufferRenderbufferEXT(non-existant"
2226 " renderbuffer %u)", renderbuffer);
2229 else if (rb == &DummyRenderbuffer) {
2230 /* This is what NVIDIA does */
2231 _mesa_error(ctx, GL_INVALID_VALUE,
2232 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2238 /* remove renderbuffer attachment */
2242 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
2243 rb && rb->Format != MESA_FORMAT_NONE) {
2244 /* make sure the renderbuffer is a depth/stencil format */
2245 const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
2246 if (baseFormat != GL_DEPTH_STENCIL) {
2247 _mesa_error(ctx, GL_INVALID_OPERATION,
2248 "glFramebufferRenderbufferEXT(renderbuffer"
2249 " is not DEPTH_STENCIL format)");
2255 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2257 assert(ctx->Driver.FramebufferRenderbuffer);
2258 ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
2260 /* Some subsequent GL commands may depend on the framebuffer's visual
2261 * after the binding is updated. Update visual info now.
2263 _mesa_update_framebuffer_visual(ctx, fb);
2268 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
2269 GLenum pname, GLint *params)
2271 const struct gl_renderbuffer_attachment *att;
2272 struct gl_framebuffer *buffer;
2274 GET_CURRENT_CONTEXT(ctx);
2276 ASSERT_OUTSIDE_BEGIN_END(ctx);
2278 /* The error differs in GL andd GLES. */
2279 err = ctx->API == API_OPENGL ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
2281 buffer = get_framebuffer_target(ctx, target);
2283 _mesa_error(ctx, GL_INVALID_ENUM,
2284 "glGetFramebufferAttachmentParameterivEXT(target)");
2288 if (is_winsys_fbo(buffer)) {
2289 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2292 * "If the framebuffer currently bound to target is zero, then
2293 * INVALID_OPERATION is generated."
2295 * The EXT_framebuffer_object spec has the same wording, and the
2296 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2299 if (ctx->API != API_OPENGL || !ctx->Extensions.ARB_framebuffer_object) {
2300 _mesa_error(ctx, GL_INVALID_OPERATION,
2301 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2304 /* the default / window-system FBO */
2305 att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
2308 /* user-created framebuffer FBO */
2309 att = _mesa_get_attachment(ctx, buffer, attachment);
2313 _mesa_error(ctx, GL_INVALID_ENUM,
2314 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2318 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2319 /* the depth and stencil attachments must point to the same buffer */
2320 const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
2321 depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
2322 stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
2323 if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
2324 _mesa_error(ctx, GL_INVALID_OPERATION,
2325 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2326 " attachments differ)");
2331 /* No need to flush here */
2334 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
2335 *params = is_winsys_fbo(buffer) ? GL_FRAMEBUFFER_DEFAULT : att->Type;
2337 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
2338 if (att->Type == GL_RENDERBUFFER_EXT) {
2339 *params = att->Renderbuffer->Name;
2341 else if (att->Type == GL_TEXTURE) {
2342 *params = att->Texture->Name;
2345 assert(att->Type == GL_NONE);
2346 if (ctx->API == API_OPENGL) {
2349 _mesa_error(ctx, GL_INVALID_ENUM,
2350 "glGetFramebufferAttachmentParameterivEXT(pname)");
2354 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
2355 if (att->Type == GL_TEXTURE) {
2356 *params = att->TextureLevel;
2358 else if (att->Type == GL_NONE) {
2359 _mesa_error(ctx, err,
2360 "glGetFramebufferAttachmentParameterivEXT(pname)");
2363 _mesa_error(ctx, GL_INVALID_ENUM,
2364 "glGetFramebufferAttachmentParameterivEXT(pname)");
2367 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
2368 if (att->Type == GL_TEXTURE) {
2369 if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
2370 *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
2376 else if (att->Type == GL_NONE) {
2377 _mesa_error(ctx, err,
2378 "glGetFramebufferAttachmentParameterivEXT(pname)");
2381 _mesa_error(ctx, GL_INVALID_ENUM,
2382 "glGetFramebufferAttachmentParameterivEXT(pname)");
2385 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
2386 if (att->Type == GL_TEXTURE) {
2387 if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
2388 *params = att->Zoffset;
2394 else if (att->Type == GL_NONE) {
2395 _mesa_error(ctx, err,
2396 "glGetFramebufferAttachmentParameterivEXT(pname)");
2399 _mesa_error(ctx, GL_INVALID_ENUM,
2400 "glGetFramebufferAttachmentParameterivEXT(pname)");
2403 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
2404 if (!ctx->Extensions.ARB_framebuffer_object) {
2405 _mesa_error(ctx, GL_INVALID_ENUM,
2406 "glGetFramebufferAttachmentParameterivEXT(pname)");
2408 else if (att->Type == GL_NONE) {
2409 _mesa_error(ctx, err,
2410 "glGetFramebufferAttachmentParameterivEXT(pname)");
2413 if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
2414 *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
2417 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2418 * if the sRGB conversion is unsupported. */
2419 *params = GL_LINEAR;
2423 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
2424 if (!ctx->Extensions.ARB_framebuffer_object) {
2425 _mesa_error(ctx, GL_INVALID_ENUM,
2426 "glGetFramebufferAttachmentParameterivEXT(pname)");
2429 else if (att->Type == GL_NONE) {
2430 _mesa_error(ctx, err,
2431 "glGetFramebufferAttachmentParameterivEXT(pname)");
2434 gl_format format = att->Renderbuffer->Format;
2435 if (format == MESA_FORMAT_S8) {
2439 else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
2440 /* depends on the attachment parameter */
2441 if (attachment == GL_STENCIL_ATTACHMENT) {
2449 *params = _mesa_get_format_datatype(format);
2453 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
2454 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
2455 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
2456 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
2457 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
2458 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
2459 if (!ctx->Extensions.ARB_framebuffer_object) {
2460 _mesa_error(ctx, GL_INVALID_ENUM,
2461 "glGetFramebufferAttachmentParameterivEXT(pname)");
2463 else if (att->Type == GL_NONE) {
2464 _mesa_error(ctx, err,
2465 "glGetFramebufferAttachmentParameterivEXT(pname)");
2467 else if (att->Texture) {
2468 const struct gl_texture_image *texImage =
2469 _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
2472 *params = get_component_bits(pname, texImage->_BaseFormat,
2473 texImage->TexFormat);
2479 else if (att->Renderbuffer) {
2480 *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
2481 att->Renderbuffer->Format);
2484 _mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:"
2485 " invalid FBO attachment structure");
2489 _mesa_error(ctx, GL_INVALID_ENUM,
2490 "glGetFramebufferAttachmentParameterivEXT(pname)");
2497 _mesa_GenerateMipmapEXT(GLenum target)
2499 struct gl_texture_image *srcImage;
2500 struct gl_texture_object *texObj;
2503 GET_CURRENT_CONTEXT(ctx);
2505 ASSERT_OUTSIDE_BEGIN_END(ctx);
2506 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2514 case GL_TEXTURE_CUBE_MAP:
2515 error = !ctx->Extensions.ARB_texture_cube_map;
2517 case GL_TEXTURE_1D_ARRAY:
2518 case GL_TEXTURE_2D_ARRAY:
2519 error = !ctx->Extensions.EXT_texture_array;
2526 _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
2527 _mesa_lookup_enum_by_nr(target));
2531 texObj = _mesa_get_current_tex_object(ctx, target);
2533 if (texObj->BaseLevel >= texObj->MaxLevel) {
2538 if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
2539 !_mesa_cube_complete(texObj)) {
2540 _mesa_error(ctx, GL_INVALID_OPERATION,
2541 "glGenerateMipmap(incomplete cube map)");
2545 _mesa_lock_texture(ctx, texObj);
2547 srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
2549 _mesa_unlock_texture(ctx, texObj);
2553 if (target == GL_TEXTURE_CUBE_MAP) {
2555 for (face = 0; face < 6; face++)
2556 ctx->Driver.GenerateMipmap(ctx,
2557 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
2561 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2563 _mesa_unlock_texture(ctx, texObj);
2567 #if FEATURE_EXT_framebuffer_blit
2569 static const struct gl_renderbuffer_attachment *
2570 find_attachment(const struct gl_framebuffer *fb,
2571 const struct gl_renderbuffer *rb)
2574 for (i = 0; i < Elements(fb->Attachment); i++) {
2575 if (fb->Attachment[i].Renderbuffer == rb)
2576 return &fb->Attachment[i];
2584 * Blit rectangular region, optionally from one framebuffer to another.
2586 * Note, if the src buffer is multisampled and the dest is not, this is
2587 * when the samples must be resolved to a single color.
2590 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
2591 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
2592 GLbitfield mask, GLenum filter)
2594 const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
2595 GL_DEPTH_BUFFER_BIT |
2596 GL_STENCIL_BUFFER_BIT);
2597 const struct gl_framebuffer *readFb, *drawFb;
2598 const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
2599 GET_CURRENT_CONTEXT(ctx);
2601 ASSERT_OUTSIDE_BEGIN_END(ctx);
2602 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2604 if (MESA_VERBOSE & VERBOSE_API)
2606 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2607 srcX0, srcY0, srcX1, srcY1,
2608 dstX0, dstY0, dstX1, dstY1,
2609 mask, _mesa_lookup_enum_by_nr(filter));
2611 if (ctx->NewState) {
2612 _mesa_update_state(ctx);
2615 readFb = ctx->ReadBuffer;
2616 drawFb = ctx->DrawBuffer;
2618 if (!readFb || !drawFb) {
2619 /* This will normally never happen but someday we may want to
2620 * support MakeCurrent() with no drawables.
2625 /* check for complete framebuffers */
2626 if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
2627 readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2628 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2629 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2633 if (filter != GL_NEAREST && filter != GL_LINEAR) {
2634 _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
2638 if (mask & ~legalMaskBits) {
2639 _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
2643 /* depth/stencil must be blitted with nearest filtering */
2644 if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
2645 && filter != GL_NEAREST) {
2646 _mesa_error(ctx, GL_INVALID_OPERATION,
2647 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2651 /* get color read/draw renderbuffers */
2652 if (mask & GL_COLOR_BUFFER_BIT) {
2653 colorReadRb = readFb->_ColorReadBuffer;
2654 colorDrawRb = drawFb->_ColorDrawBuffers[0];
2656 /* From the EXT_framebuffer_object spec:
2658 * "If a buffer is specified in <mask> and does not exist in both
2659 * the read and draw framebuffers, the corresponding bit is silently
2662 if ((colorReadRb == NULL) || (colorDrawRb == NULL)) {
2663 colorReadRb = colorDrawRb = NULL;
2664 mask &= ~GL_COLOR_BUFFER_BIT;
2668 colorReadRb = colorDrawRb = NULL;
2671 if (mask & GL_STENCIL_BUFFER_BIT) {
2672 struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
2673 struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
2675 /* From the EXT_framebuffer_object spec:
2677 * "If a buffer is specified in <mask> and does not exist in both
2678 * the read and draw framebuffers, the corresponding bit is silently
2681 if ((readRb == NULL) || (drawRb == NULL)) {
2682 readRb = drawRb = NULL;
2683 mask &= ~GL_STENCIL_BUFFER_BIT;
2685 else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
2686 _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
2687 _mesa_error(ctx, GL_INVALID_OPERATION,
2688 "glBlitFramebufferEXT(stencil buffer size mismatch)");
2693 if (mask & GL_DEPTH_BUFFER_BIT) {
2694 struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
2695 struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
2697 /* From the EXT_framebuffer_object spec:
2699 * "If a buffer is specified in <mask> and does not exist in both
2700 * the read and draw framebuffers, the corresponding bit is silently
2703 if ((readRb == NULL) || (drawRb == NULL)) {
2704 readRb = drawRb = NULL;
2705 mask &= ~GL_DEPTH_BUFFER_BIT;
2707 else if (_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
2708 _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
2709 _mesa_error(ctx, GL_INVALID_OPERATION,
2710 "glBlitFramebufferEXT(depth buffer size mismatch)");
2715 if (readFb->Visual.samples > 0 &&
2716 drawFb->Visual.samples > 0 &&
2717 readFb->Visual.samples != drawFb->Visual.samples) {
2718 _mesa_error(ctx, GL_INVALID_OPERATION,
2719 "glBlitFramebufferEXT(mismatched samples");
2723 /* extra checks for multisample copies... */
2724 if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
2725 /* src and dest region sizes must be the same */
2726 if (srcX1 - srcX0 != dstX1 - dstX0 ||
2727 srcY1 - srcY0 != dstY1 - dstY0) {
2728 _mesa_error(ctx, GL_INVALID_OPERATION,
2729 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2733 /* color formats must match */
2736 colorReadRb->Format != colorDrawRb->Format) {
2737 _mesa_error(ctx, GL_INVALID_OPERATION,
2738 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2743 if (!ctx->Extensions.EXT_framebuffer_blit) {
2744 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
2750 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2752 srcX0, srcY0, srcX1, srcY1,
2753 dstX0, dstY0, dstX1, dstY1,
2756 const struct gl_renderbuffer_attachment *att;
2758 att = find_attachment(readFb, colorReadRb);
2759 printf(" Src FBO %u RB %u (%dx%d) ",
2760 readFb->Name, colorReadRb->Name,
2761 colorReadRb->Width, colorReadRb->Height);
2762 if (att && att->Texture) {
2763 printf("Tex %u tgt 0x%x level %u face %u",
2765 att->Texture->Target,
2771 att = find_attachment(drawFb, colorDrawRb);
2772 printf(" Dst FBO %u RB %u (%dx%d) ",
2773 drawFb->Name, colorDrawRb->Name,
2774 colorDrawRb->Width, colorDrawRb->Height);
2775 if (att && att->Texture) {
2776 printf("Tex %u tgt 0x%x level %u face %u",
2778 att->Texture->Target,
2790 ASSERT(ctx->Driver.BlitFramebuffer);
2791 ctx->Driver.BlitFramebuffer(ctx,
2792 srcX0, srcY0, srcX1, srcY1,
2793 dstX0, dstY0, dstX1, dstY1,
2796 #endif /* FEATURE_EXT_framebuffer_blit */
2798 #if FEATURE_ARB_geometry_shader4
2800 _mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
2801 GLuint texture, GLint level)
2803 GET_CURRENT_CONTEXT(ctx);
2804 _mesa_error(ctx, GL_INVALID_OPERATION,
2805 "glFramebufferTextureARB "
2806 "not implemented!");
2810 _mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
2811 GLuint texture, GLint level, GLenum face)
2813 GET_CURRENT_CONTEXT(ctx);
2814 _mesa_error(ctx, GL_INVALID_OPERATION,
2815 "glFramebufferTextureFaceARB "
2816 "not implemented!");
2818 #endif /* FEATURE_ARB_geometry_shader4 */