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"
51 /** Set this to 1 to help debug FBO incompleteness problems */
54 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
61 * None of the GL_EXT_framebuffer_object functions are compiled into
68 * When glGenRender/FramebuffersEXT() is called we insert pointers to
69 * these placeholder objects into the hash table.
70 * Later, when the object ID is first bound, we replace the placeholder
71 * with the real frame/renderbuffer.
73 static struct gl_framebuffer DummyFramebuffer;
74 static struct gl_renderbuffer DummyRenderbuffer;
76 /* We bind this framebuffer when applications pass a NULL
77 * drawable/surface in make current. */
78 static struct gl_framebuffer IncompleteFramebuffer;
82 * Is the given FBO a user-created FBO?
84 static inline GLboolean
85 is_user_fbo(const struct gl_framebuffer *fb)
92 * Is the given FBO a window system FBO (like an X window)?
94 static inline GLboolean
95 is_winsys_fbo(const struct gl_framebuffer *fb)
102 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
108 delete_dummy_framebuffer(struct gl_framebuffer *fb)
115 _mesa_init_fbobjects(struct gl_context *ctx)
117 _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
118 _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
119 _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
120 DummyFramebuffer.Delete = delete_dummy_framebuffer;
121 DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
122 IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
125 struct gl_framebuffer *
126 _mesa_get_incomplete_framebuffer(void)
128 return &IncompleteFramebuffer;
132 * Helper routine for getting a gl_renderbuffer.
134 struct gl_renderbuffer *
135 _mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
137 struct gl_renderbuffer *rb;
142 rb = (struct gl_renderbuffer *)
143 _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
149 * Helper routine for getting a gl_framebuffer.
151 struct gl_framebuffer *
152 _mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
154 struct gl_framebuffer *fb;
159 fb = (struct gl_framebuffer *)
160 _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
166 * Mark the given framebuffer as invalid. This will force the
167 * test for framebuffer completeness to be done before the framebuffer
171 invalidate_framebuffer(struct gl_framebuffer *fb)
173 fb->_Status = 0; /* "indeterminate" */
178 * Return the gl_framebuffer object which corresponds to the given
179 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
180 * Check support for GL_EXT_framebuffer_blit to determine if certain
182 * \return gl_framebuffer pointer or NULL if target is illegal
184 static struct gl_framebuffer *
185 get_framebuffer_target(struct gl_context *ctx, GLenum target)
188 case GL_DRAW_FRAMEBUFFER:
189 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
190 ? ctx->DrawBuffer : NULL;
191 case GL_READ_FRAMEBUFFER:
192 return ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL
193 ? ctx->ReadBuffer : NULL;
194 case GL_FRAMEBUFFER_EXT:
195 return ctx->DrawBuffer;
203 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
204 * gl_renderbuffer_attachment object.
205 * This function is only used for user-created FB objects, not the
206 * default / window-system FB object.
207 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
208 * the depth buffer attachment point.
210 struct gl_renderbuffer_attachment *
211 _mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
216 assert(is_user_fbo(fb));
218 switch (attachment) {
219 case GL_COLOR_ATTACHMENT0_EXT:
220 case GL_COLOR_ATTACHMENT1_EXT:
221 case GL_COLOR_ATTACHMENT2_EXT:
222 case GL_COLOR_ATTACHMENT3_EXT:
223 case GL_COLOR_ATTACHMENT4_EXT:
224 case GL_COLOR_ATTACHMENT5_EXT:
225 case GL_COLOR_ATTACHMENT6_EXT:
226 case GL_COLOR_ATTACHMENT7_EXT:
227 case GL_COLOR_ATTACHMENT8_EXT:
228 case GL_COLOR_ATTACHMENT9_EXT:
229 case GL_COLOR_ATTACHMENT10_EXT:
230 case GL_COLOR_ATTACHMENT11_EXT:
231 case GL_COLOR_ATTACHMENT12_EXT:
232 case GL_COLOR_ATTACHMENT13_EXT:
233 case GL_COLOR_ATTACHMENT14_EXT:
234 case GL_COLOR_ATTACHMENT15_EXT:
235 /* Only OpenGL ES 1.x forbids color attachments other than
236 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
239 i = attachment - GL_COLOR_ATTACHMENT0_EXT;
240 if (i >= ctx->Const.MaxColorAttachments
241 || (i > 0 && ctx->API == API_OPENGLES)) {
244 return &fb->Attachment[BUFFER_COLOR0 + i];
245 case GL_DEPTH_STENCIL_ATTACHMENT:
246 if (ctx->API != API_OPENGL)
249 case GL_DEPTH_ATTACHMENT_EXT:
250 return &fb->Attachment[BUFFER_DEPTH];
251 case GL_STENCIL_ATTACHMENT_EXT:
252 return &fb->Attachment[BUFFER_STENCIL];
260 * As above, but only used for getting attachments of the default /
261 * window-system framebuffer (not user-created framebuffer objects).
263 static struct gl_renderbuffer_attachment *
264 _mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
267 assert(is_winsys_fbo(fb));
269 switch (attachment) {
271 return &fb->Attachment[BUFFER_FRONT_LEFT];
273 return &fb->Attachment[BUFFER_FRONT_RIGHT];
275 return &fb->Attachment[BUFFER_BACK_LEFT];
277 return &fb->Attachment[BUFFER_BACK_RIGHT];
279 if (fb->Visual.numAuxBuffers == 1) {
280 return &fb->Attachment[BUFFER_AUX0];
284 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
286 * "If the default framebuffer is bound to target, then attachment must
287 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
288 * identifying a color buffer; DEPTH, identifying the depth buffer; or
289 * STENCIL, identifying the stencil buffer."
291 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
292 * language. However, revision #33 of the ARB_framebuffer_object spec
295 * "If the default framebuffer is bound to <target>, then <attachment>
296 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
297 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
298 * depth buffer, or the stencil buffer, and <pname> may be
299 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
300 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
302 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
303 * from glext.h, so shipping apps should not use those values.
305 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
306 * support queries of the window system FBO.
309 return &fb->Attachment[BUFFER_DEPTH];
311 return &fb->Attachment[BUFFER_STENCIL];
320 * Remove any texture or renderbuffer attached to the given attachment
321 * point. Update reference counts, etc.
324 _mesa_remove_attachment(struct gl_context *ctx,
325 struct gl_renderbuffer_attachment *att)
327 if (att->Type == GL_TEXTURE) {
328 ASSERT(att->Texture);
329 if (ctx->Driver.FinishRenderTexture) {
330 /* tell driver that we're done rendering to this texture. */
331 ctx->Driver.FinishRenderTexture(ctx, att);
333 _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
334 ASSERT(!att->Texture);
336 if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
337 ASSERT(!att->Texture);
338 _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
339 ASSERT(!att->Renderbuffer);
342 att->Complete = GL_TRUE;
347 * Bind a texture object to an attachment point.
348 * The previous binding, if any, will be removed first.
351 _mesa_set_texture_attachment(struct gl_context *ctx,
352 struct gl_framebuffer *fb,
353 struct gl_renderbuffer_attachment *att,
354 struct gl_texture_object *texObj,
355 GLenum texTarget, GLuint level, GLuint zoffset)
357 if (att->Texture == texObj) {
358 /* re-attaching same texture */
359 ASSERT(att->Type == GL_TEXTURE);
360 if (ctx->Driver.FinishRenderTexture)
361 ctx->Driver.FinishRenderTexture(ctx, att);
365 if (ctx->Driver.FinishRenderTexture && att->Texture)
366 ctx->Driver.FinishRenderTexture(ctx, att);
367 _mesa_remove_attachment(ctx, att);
368 att->Type = GL_TEXTURE;
369 assert(!att->Texture);
370 _mesa_reference_texobj(&att->Texture, texObj);
373 /* always update these fields */
374 att->TextureLevel = level;
375 att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
376 att->Zoffset = zoffset;
377 att->Complete = GL_FALSE;
379 if (_mesa_get_attachment_teximage(att)) {
380 ctx->Driver.RenderTexture(ctx, fb, att);
383 invalidate_framebuffer(fb);
388 * Bind a renderbuffer to an attachment point.
389 * The previous binding, if any, will be removed first.
392 _mesa_set_renderbuffer_attachment(struct gl_context *ctx,
393 struct gl_renderbuffer_attachment *att,
394 struct gl_renderbuffer *rb)
396 /* XXX check if re-doing same attachment, exit early */
397 _mesa_remove_attachment(ctx, att);
398 att->Type = GL_RENDERBUFFER_EXT;
399 att->Texture = NULL; /* just to be safe */
400 att->Complete = GL_FALSE;
401 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
406 * Fallback for ctx->Driver.FramebufferRenderbuffer()
407 * Attach a renderbuffer object to a framebuffer object.
410 _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
411 struct gl_framebuffer *fb,
412 GLenum attachment, struct gl_renderbuffer *rb)
414 struct gl_renderbuffer_attachment *att;
416 _glthread_LOCK_MUTEX(fb->Mutex);
418 att = _mesa_get_attachment(ctx, fb, attachment);
421 _mesa_set_renderbuffer_attachment(ctx, att, rb);
422 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
423 /* do stencil attachment here (depth already done above) */
424 att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
426 _mesa_set_renderbuffer_attachment(ctx, att, rb);
428 rb->AttachedAnytime = GL_TRUE;
431 _mesa_remove_attachment(ctx, att);
434 invalidate_framebuffer(fb);
436 _glthread_UNLOCK_MUTEX(fb->Mutex);
441 * Fallback for ctx->Driver.ValidateFramebuffer()
442 * Check if the renderbuffer's formats are supported by the software
444 * Drivers should probably override this.
447 _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
450 for (buf = 0; buf < BUFFER_COUNT; buf++) {
451 const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
453 switch (rb->_BaseFormat) {
455 case GL_LUMINANCE_ALPHA:
460 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
464 switch (rb->Format) {
465 /* XXX This list is likely incomplete. */
466 case MESA_FORMAT_RGB9_E5_FLOAT:
467 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
470 /* render buffer format is supported by software rendering */
482 att_incomplete(const char *msg)
485 _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
496 fbo_incomplete(const char *msg, int index)
499 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
508 * Is the given base format a legal format for a color renderbuffer?
511 _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
513 switch (baseFormat) {
518 case GL_LUMINANCE_ALPHA:
521 return ctx->Extensions.ARB_framebuffer_object;
524 return ctx->Extensions.ARB_texture_rg;
532 * Is the given base format a legal format for a depth/stencil renderbuffer?
535 is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
537 switch (baseFormat) {
538 case GL_DEPTH_COMPONENT:
539 case GL_DEPTH_STENCIL_EXT:
548 * Test if an attachment point is complete and update its Complete field.
549 * \param format if GL_COLOR, this is a color attachment point,
550 * if GL_DEPTH, this is a depth component attachment point,
551 * if GL_STENCIL, this is a stencil component attachment point.
554 test_attachment_completeness(const struct gl_context *ctx, GLenum format,
555 struct gl_renderbuffer_attachment *att)
557 assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
559 /* assume complete */
560 att->Complete = GL_TRUE;
562 /* Look for reasons why the attachment might be incomplete */
563 if (att->Type == GL_TEXTURE) {
564 const struct gl_texture_object *texObj = att->Texture;
565 struct gl_texture_image *texImage;
569 att_incomplete("no texobj");
570 att->Complete = GL_FALSE;
574 texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
576 att_incomplete("no teximage");
577 att->Complete = GL_FALSE;
580 if (texImage->Width < 1 || texImage->Height < 1) {
581 att_incomplete("teximage width/height=0");
582 printf("texobj = %u\n", texObj->Name);
583 printf("level = %d\n", att->TextureLevel);
584 att->Complete = GL_FALSE;
587 if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
588 att_incomplete("bad z offset");
589 att->Complete = GL_FALSE;
593 baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
595 if (format == GL_COLOR) {
596 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
597 att_incomplete("bad format");
598 att->Complete = GL_FALSE;
601 if (_mesa_is_format_compressed(texImage->TexFormat)) {
602 att_incomplete("compressed internalformat");
603 att->Complete = GL_FALSE;
607 else if (format == GL_DEPTH) {
608 if (baseFormat == GL_DEPTH_COMPONENT) {
611 else if (ctx->Extensions.EXT_packed_depth_stencil &&
612 ctx->Extensions.ARB_depth_texture &&
613 baseFormat == GL_DEPTH_STENCIL_EXT) {
617 att->Complete = GL_FALSE;
618 att_incomplete("bad depth format");
623 ASSERT(format == GL_STENCIL);
624 if (ctx->Extensions.EXT_packed_depth_stencil &&
625 ctx->Extensions.ARB_depth_texture &&
626 baseFormat == GL_DEPTH_STENCIL_EXT) {
630 /* no such thing as stencil-only textures */
631 att_incomplete("illegal stencil texture");
632 att->Complete = GL_FALSE;
637 else if (att->Type == GL_RENDERBUFFER_EXT) {
638 const GLenum baseFormat =
639 _mesa_get_format_base_format(att->Renderbuffer->Format);
641 ASSERT(att->Renderbuffer);
642 if (!att->Renderbuffer->InternalFormat ||
643 att->Renderbuffer->Width < 1 ||
644 att->Renderbuffer->Height < 1) {
645 att_incomplete("0x0 renderbuffer");
646 att->Complete = GL_FALSE;
649 if (format == GL_COLOR) {
650 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
651 att_incomplete("bad renderbuffer color format");
652 att->Complete = GL_FALSE;
656 else if (format == GL_DEPTH) {
657 if (baseFormat == GL_DEPTH_COMPONENT) {
660 else if (ctx->Extensions.EXT_packed_depth_stencil &&
661 baseFormat == GL_DEPTH_STENCIL_EXT) {
665 att_incomplete("bad renderbuffer depth format");
666 att->Complete = GL_FALSE;
671 assert(format == GL_STENCIL);
672 if (baseFormat == GL_STENCIL_INDEX) {
675 else if (ctx->Extensions.EXT_packed_depth_stencil &&
676 baseFormat == GL_DEPTH_STENCIL_EXT) {
680 att->Complete = GL_FALSE;
681 att_incomplete("bad renderbuffer stencil format");
687 ASSERT(att->Type == GL_NONE);
695 * Test if the given framebuffer object is complete and update its
696 * Status field with the results.
697 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
698 * driver to make hardware-specific validation/completeness checks.
699 * Also update the framebuffer's Width and Height fields if the
700 * framebuffer is complete.
703 _mesa_test_framebuffer_completeness(struct gl_context *ctx,
704 struct gl_framebuffer *fb)
707 GLenum intFormat = GL_NONE; /* color buffers' internal format */
708 GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
709 GLint numSamples = -1;
713 assert(is_user_fbo(fb));
719 /* Start at -2 to more easily loop over all attachment points.
724 for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
725 struct gl_renderbuffer_attachment *att;
730 * XXX for ARB_fbo, only check color buffers that are named by
731 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
734 /* check for attachment completeness
737 att = &fb->Attachment[BUFFER_DEPTH];
738 test_attachment_completeness(ctx, GL_DEPTH, att);
739 if (!att->Complete) {
740 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
741 fbo_incomplete("depth attachment incomplete", -1);
746 att = &fb->Attachment[BUFFER_STENCIL];
747 test_attachment_completeness(ctx, GL_STENCIL, att);
748 if (!att->Complete) {
749 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
750 fbo_incomplete("stencil attachment incomplete", -1);
755 att = &fb->Attachment[BUFFER_COLOR0 + i];
756 test_attachment_completeness(ctx, GL_COLOR, att);
757 if (!att->Complete) {
758 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
759 fbo_incomplete("color attachment incomplete", i);
764 /* get width, height, format of the renderbuffer/texture
766 if (att->Type == GL_TEXTURE) {
767 const struct gl_texture_image *texImg =
768 _mesa_get_attachment_teximage(att);
769 minWidth = MIN2(minWidth, texImg->Width);
770 maxWidth = MAX2(maxWidth, texImg->Width);
771 minHeight = MIN2(minHeight, texImg->Height);
772 maxHeight = MAX2(maxHeight, texImg->Height);
773 f = texImg->_BaseFormat;
774 attFormat = texImg->TexFormat;
776 if (!_mesa_is_legal_color_format(ctx, f) &&
777 !is_legal_depth_format(ctx, f)) {
778 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
779 fbo_incomplete("texture attachment incomplete", -1);
783 else if (att->Type == GL_RENDERBUFFER_EXT) {
784 minWidth = MIN2(minWidth, att->Renderbuffer->Width);
785 maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
786 minHeight = MIN2(minHeight, att->Renderbuffer->Height);
787 maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
788 f = att->Renderbuffer->InternalFormat;
789 attFormat = att->Renderbuffer->Format;
793 assert(att->Type == GL_NONE);
797 if (att->Renderbuffer && numSamples < 0) {
799 numSamples = att->Renderbuffer->NumSamples;
802 /* check if integer color */
803 fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
805 /* Error-check width, height, format, samples
807 if (numImages == 1) {
808 /* save format, num samples */
814 if (!ctx->Extensions.ARB_framebuffer_object) {
815 /* check that width, height, format are same */
816 if (minWidth != maxWidth || minHeight != maxHeight) {
817 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
818 fbo_incomplete("width or height mismatch", -1);
821 /* check that all color buffer have same format */
822 if (intFormat != GL_NONE && f != intFormat) {
823 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
824 fbo_incomplete("format mismatch", -1);
828 if (att->Renderbuffer &&
829 att->Renderbuffer->NumSamples != numSamples) {
830 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
831 fbo_incomplete("inconsistant number of samples", i);
839 if (ctx->API == API_OPENGL && !ctx->Extensions.ARB_ES2_compatibility) {
840 /* Check that all DrawBuffers are present */
841 for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
842 if (fb->ColorDrawBuffer[j] != GL_NONE) {
843 const struct gl_renderbuffer_attachment *att
844 = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
846 if (att->Type == GL_NONE) {
847 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
848 fbo_incomplete("missing drawbuffer", j);
854 /* Check that the ReadBuffer is present */
855 if (fb->ColorReadBuffer != GL_NONE) {
856 const struct gl_renderbuffer_attachment *att
857 = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
859 if (att->Type == GL_NONE) {
860 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
861 fbo_incomplete("missing readbuffer", -1);
870 if (numImages == 0) {
871 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
872 fbo_incomplete("no attachments", -1);
876 /* Provisionally set status = COMPLETE ... */
877 fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
879 /* ... but the driver may say the FB is incomplete.
880 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
883 if (ctx->Driver.ValidateFramebuffer) {
884 ctx->Driver.ValidateFramebuffer(ctx, fb);
885 if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
886 fbo_incomplete("driver marked FBO as incomplete", -1);
890 if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
892 * Note that if ARB_framebuffer_object is supported and the attached
893 * renderbuffers/textures are different sizes, the framebuffer
894 * width/height will be set to the smallest width/height.
896 fb->Width = minWidth;
897 fb->Height = minHeight;
899 /* finally, update the visual info for the framebuffer */
900 _mesa_update_framebuffer_visual(ctx, fb);
906 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
908 GET_CURRENT_CONTEXT(ctx);
909 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
911 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
912 if (rb != NULL && rb != &DummyRenderbuffer)
920 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
922 struct gl_renderbuffer *newRb;
923 GET_CURRENT_CONTEXT(ctx);
925 ASSERT_OUTSIDE_BEGIN_END(ctx);
927 if (target != GL_RENDERBUFFER_EXT) {
928 _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
932 /* No need to flush here since the render buffer binding has no
933 * effect on rendering state.
937 newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
938 if (newRb == &DummyRenderbuffer) {
939 /* ID was reserved, but no real renderbuffer object made yet */
942 else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
943 /* All RB IDs must be Gen'd */
944 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
949 /* create new renderbuffer object */
950 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
952 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
955 ASSERT(newRb->AllocStorage);
956 _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
957 newRb->RefCount = 1; /* referenced by hash table */
964 ASSERT(newRb != &DummyRenderbuffer);
966 _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
971 * If the given renderbuffer is anywhere attached to the framebuffer, detach
973 * This is used when a renderbuffer object is deleted.
974 * The spec calls for unbinding.
977 detach_renderbuffer(struct gl_context *ctx,
978 struct gl_framebuffer *fb,
979 struct gl_renderbuffer *rb)
982 for (i = 0; i < BUFFER_COUNT; i++) {
983 if (fb->Attachment[i].Renderbuffer == rb) {
984 _mesa_remove_attachment(ctx, &fb->Attachment[i]);
987 invalidate_framebuffer(fb);
992 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
995 GET_CURRENT_CONTEXT(ctx);
997 ASSERT_OUTSIDE_BEGIN_END(ctx);
998 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1000 for (i = 0; i < n; i++) {
1001 if (renderbuffers[i] > 0) {
1002 struct gl_renderbuffer *rb;
1003 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
1005 /* check if deleting currently bound renderbuffer object */
1006 if (rb == ctx->CurrentRenderbuffer) {
1008 ASSERT(rb->RefCount >= 2);
1009 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
1012 if (is_user_fbo(ctx->DrawBuffer)) {
1013 detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
1015 if (is_user_fbo(ctx->ReadBuffer)
1016 && ctx->ReadBuffer != ctx->DrawBuffer) {
1017 detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
1020 /* Remove from hash table immediately, to free the ID.
1021 * But the object will not be freed until it's no longer
1022 * referenced anywhere else.
1024 _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
1026 if (rb != &DummyRenderbuffer) {
1027 /* no longer referenced by hash table */
1028 _mesa_reference_renderbuffer(&rb, NULL);
1037 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
1039 GET_CURRENT_CONTEXT(ctx);
1043 ASSERT_OUTSIDE_BEGIN_END(ctx);
1046 _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
1053 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
1055 for (i = 0; i < n; i++) {
1056 GLuint name = first + i;
1057 renderbuffers[i] = name;
1058 /* insert dummy placeholder into hash table */
1059 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1060 _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
1061 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1067 * Given an internal format token for a render buffer, return the
1068 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1069 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1070 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1072 * This is similar to _mesa_base_tex_format() but the set of valid
1073 * internal formats is different.
1075 * Note that even if a format is determined to be legal here, validation
1076 * of the FBO may fail if the format is not supported by the driver/GPU.
1078 * \param internalFormat as passed to glRenderbufferStorage()
1079 * \return the base internal format, or 0 if internalFormat is illegal
1082 _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
1085 * Notes: some formats such as alpha, luminance, etc. were added
1086 * with GL_ARB_framebuffer_object.
1088 switch (internalFormat) {
1094 return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1098 case GL_LUMINANCE12:
1099 case GL_LUMINANCE16:
1100 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1101 case GL_LUMINANCE_ALPHA:
1102 case GL_LUMINANCE4_ALPHA4:
1103 case GL_LUMINANCE6_ALPHA2:
1104 case GL_LUMINANCE8_ALPHA8:
1105 case GL_LUMINANCE12_ALPHA4:
1106 case GL_LUMINANCE12_ALPHA12:
1107 case GL_LUMINANCE16_ALPHA16:
1108 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1112 case GL_INTENSITY12:
1113 case GL_INTENSITY16:
1114 return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1133 case GL_SRGB8_ALPHA8_EXT:
1135 case GL_STENCIL_INDEX:
1136 case GL_STENCIL_INDEX1_EXT:
1137 case GL_STENCIL_INDEX4_EXT:
1138 case GL_STENCIL_INDEX8_EXT:
1139 case GL_STENCIL_INDEX16_EXT:
1140 return GL_STENCIL_INDEX;
1141 case GL_DEPTH_COMPONENT:
1142 case GL_DEPTH_COMPONENT16:
1143 case GL_DEPTH_COMPONENT24:
1144 case GL_DEPTH_COMPONENT32:
1145 return GL_DEPTH_COMPONENT;
1146 case GL_DEPTH_STENCIL_EXT:
1147 case GL_DEPTH24_STENCIL8_EXT:
1148 if (ctx->Extensions.EXT_packed_depth_stencil)
1149 return GL_DEPTH_STENCIL_EXT;
1152 case GL_DEPTH_COMPONENT32F:
1153 if (ctx->Extensions.ARB_depth_buffer_float)
1154 return GL_DEPTH_COMPONENT;
1157 case GL_DEPTH32F_STENCIL8:
1158 if (ctx->Extensions.ARB_depth_buffer_float)
1159 return GL_DEPTH_STENCIL;
1165 return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
1169 return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
1170 /* signed normalized texture formats */
1174 return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
1178 return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
1181 case GL_RGB16_SNORM:
1182 return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
1184 case GL_RGBA8_SNORM:
1185 case GL_RGBA16_SNORM:
1186 return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
1187 case GL_ALPHA_SNORM:
1188 case GL_ALPHA8_SNORM:
1189 case GL_ALPHA16_SNORM:
1190 return ctx->Extensions.EXT_texture_snorm &&
1191 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1192 case GL_LUMINANCE_SNORM:
1193 case GL_LUMINANCE8_SNORM:
1194 case GL_LUMINANCE16_SNORM:
1195 return ctx->Extensions.EXT_texture_snorm &&
1196 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1197 case GL_LUMINANCE_ALPHA_SNORM:
1198 case GL_LUMINANCE8_ALPHA8_SNORM:
1199 case GL_LUMINANCE16_ALPHA16_SNORM:
1200 return ctx->Extensions.EXT_texture_snorm &&
1201 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1202 case GL_INTENSITY_SNORM:
1203 case GL_INTENSITY8_SNORM:
1204 case GL_INTENSITY16_SNORM:
1205 return ctx->Extensions.EXT_texture_snorm &&
1206 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1209 return ctx->Extensions.ARB_texture_rg &&
1210 ctx->Extensions.ARB_texture_float ? GL_RED : 0;
1213 return ctx->Extensions.ARB_texture_rg &&
1214 ctx->Extensions.ARB_texture_float ? GL_RG : 0;
1217 return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
1220 return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
1221 case GL_ALPHA16F_ARB:
1222 case GL_ALPHA32F_ARB:
1223 return ctx->Extensions.ARB_texture_float &&
1224 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1225 case GL_LUMINANCE16F_ARB:
1226 case GL_LUMINANCE32F_ARB:
1227 return ctx->Extensions.ARB_texture_float &&
1228 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1229 case GL_LUMINANCE_ALPHA16F_ARB:
1230 case GL_LUMINANCE_ALPHA32F_ARB:
1231 return ctx->Extensions.ARB_texture_float &&
1232 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1233 case GL_INTENSITY16F_ARB:
1234 case GL_INTENSITY32F_ARB:
1235 return ctx->Extensions.ARB_texture_float &&
1236 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1238 return ctx->Extensions.EXT_texture_shared_exponent ? GL_RGB : 0;
1239 case GL_R11F_G11F_B10F:
1240 return ctx->Extensions.EXT_packed_float ? GL_RGB : 0;
1242 case GL_RGBA8UI_EXT:
1243 case GL_RGBA16UI_EXT:
1244 case GL_RGBA32UI_EXT:
1246 case GL_RGBA16I_EXT:
1247 case GL_RGBA32I_EXT:
1248 return ctx->Extensions.EXT_texture_integer ? GL_RGBA : 0;
1251 case GL_RGB16UI_EXT:
1252 case GL_RGB32UI_EXT:
1256 return ctx->Extensions.EXT_texture_integer ? GL_RGB : 0;
1264 return ctx->Extensions.ARB_texture_rg &&
1265 ctx->Extensions.EXT_texture_integer ? GL_RED : 0;
1273 return ctx->Extensions.ARB_texture_rg &&
1274 ctx->Extensions.EXT_texture_integer ? GL_RG : 0;
1276 case GL_INTENSITY8I_EXT:
1277 case GL_INTENSITY8UI_EXT:
1278 case GL_INTENSITY16I_EXT:
1279 case GL_INTENSITY16UI_EXT:
1280 case GL_INTENSITY32I_EXT:
1281 case GL_INTENSITY32UI_EXT:
1282 return ctx->Extensions.EXT_texture_integer &&
1283 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1285 case GL_LUMINANCE8I_EXT:
1286 case GL_LUMINANCE8UI_EXT:
1287 case GL_LUMINANCE16I_EXT:
1288 case GL_LUMINANCE16UI_EXT:
1289 case GL_LUMINANCE32I_EXT:
1290 case GL_LUMINANCE32UI_EXT:
1291 return ctx->Extensions.EXT_texture_integer &&
1292 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1294 case GL_LUMINANCE_ALPHA8I_EXT:
1295 case GL_LUMINANCE_ALPHA8UI_EXT:
1296 case GL_LUMINANCE_ALPHA16I_EXT:
1297 case GL_LUMINANCE_ALPHA16UI_EXT:
1298 case GL_LUMINANCE_ALPHA32I_EXT:
1299 case GL_LUMINANCE_ALPHA32UI_EXT:
1300 return ctx->Extensions.EXT_texture_integer &&
1301 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1309 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1312 invalidate_rb(GLuint key, void *data, void *userData)
1314 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
1315 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
1317 /* If this is a user-created FBO */
1318 if (is_user_fbo(fb)) {
1320 for (i = 0; i < BUFFER_COUNT; i++) {
1321 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1322 if (att->Type == GL_RENDERBUFFER &&
1323 att->Renderbuffer == rb) {
1324 /* Mark fb status as indeterminate to force re-validation */
1333 /** sentinal value, see below */
1334 #define NO_SAMPLES 1000
1338 * Helper function used by _mesa_RenderbufferStorageEXT() and
1339 * _mesa_RenderbufferStorageMultisample().
1340 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1343 renderbuffer_storage(GLenum target, GLenum internalFormat,
1344 GLsizei width, GLsizei height, GLsizei samples)
1346 const char *func = samples == NO_SAMPLES ?
1347 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1348 struct gl_renderbuffer *rb;
1350 GET_CURRENT_CONTEXT(ctx);
1352 ASSERT_OUTSIDE_BEGIN_END(ctx);
1354 if (target != GL_RENDERBUFFER_EXT) {
1355 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
1359 baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
1360 if (baseFormat == 0) {
1361 _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
1365 if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1366 _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
1370 if (height < 0 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1371 _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
1375 if (samples == NO_SAMPLES) {
1376 /* NumSamples == 0 indicates non-multisampling */
1379 else if (samples > (GLsizei) ctx->Const.MaxSamples) {
1380 /* note: driver may choose to use more samples than what's requested */
1381 _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
1385 rb = ctx->CurrentRenderbuffer;
1387 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
1391 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1393 if (rb->InternalFormat == internalFormat &&
1394 rb->Width == (GLuint) width &&
1395 rb->Height == (GLuint) height) {
1396 /* no change in allocation needed */
1400 /* These MUST get set by the AllocStorage func */
1401 rb->Format = MESA_FORMAT_NONE;
1402 rb->NumSamples = samples;
1404 /* Now allocate the storage */
1405 ASSERT(rb->AllocStorage);
1406 if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
1407 /* No error - check/set fields now */
1408 assert(rb->Format != MESA_FORMAT_NONE);
1409 assert(rb->Width == (GLuint) width);
1410 assert(rb->Height == (GLuint) height);
1411 rb->InternalFormat = internalFormat;
1412 rb->_BaseFormat = baseFormat;
1413 assert(rb->_BaseFormat != 0);
1416 /* Probably ran out of memory - clear the fields */
1419 rb->Format = MESA_FORMAT_NONE;
1420 rb->InternalFormat = GL_NONE;
1421 rb->_BaseFormat = GL_NONE;
1425 /* Invalidate the framebuffers the renderbuffer is attached in. */
1426 if (rb->AttachedAnytime) {
1427 _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb);
1432 #if FEATURE_OES_EGL_image
1434 _mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
1436 struct gl_renderbuffer *rb;
1437 GET_CURRENT_CONTEXT(ctx);
1438 ASSERT_OUTSIDE_BEGIN_END(ctx);
1440 if (!ctx->Extensions.OES_EGL_image) {
1441 _mesa_error(ctx, GL_INVALID_OPERATION,
1442 "glEGLImageTargetRenderbufferStorageOES(unsupported)");
1446 if (target != GL_RENDERBUFFER) {
1447 _mesa_error(ctx, GL_INVALID_ENUM,
1448 "EGLImageTargetRenderbufferStorageOES");
1452 rb = ctx->CurrentRenderbuffer;
1454 _mesa_error(ctx, GL_INVALID_OPERATION,
1455 "EGLImageTargetRenderbufferStorageOES");
1459 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1461 ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
1467 * Helper function for _mesa_GetRenderbufferParameterivEXT() and
1468 * _mesa_GetFramebufferAttachmentParameterivEXT()
1469 * We have to be careful to respect the base format. For example, if a
1470 * renderbuffer/texture was created with internalFormat=GL_RGB but the
1471 * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
1472 * we need to return zero.
1475 get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
1478 case GL_RENDERBUFFER_RED_SIZE_EXT:
1479 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
1480 if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
1481 baseFormat == GL_RG || baseFormat == GL_RED)
1482 return _mesa_get_format_bits(format, pname);
1485 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1486 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
1487 if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
1488 return _mesa_get_format_bits(format, pname);
1491 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1492 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
1493 if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
1494 return _mesa_get_format_bits(format, pname);
1497 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1498 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
1499 if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
1500 baseFormat == GL_LUMINANCE_ALPHA)
1501 return _mesa_get_format_bits(format, pname);
1504 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1505 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
1506 if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
1507 return _mesa_get_format_bits(format, pname);
1510 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1511 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
1512 if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
1513 return _mesa_get_format_bits(format, pname);
1524 _mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1525 GLsizei width, GLsizei height)
1527 /* GL_ARB_fbo says calling this function is equivalent to calling
1528 * glRenderbufferStorageMultisample() with samples=0. We pass in
1529 * a token value here just for error reporting purposes.
1531 renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
1536 _mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
1537 GLenum internalFormat,
1538 GLsizei width, GLsizei height)
1540 renderbuffer_storage(target, internalFormat, width, height, samples);
1545 * OpenGL ES version of glRenderBufferStorage.
1548 _es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
1549 GLsizei width, GLsizei height)
1551 switch (internalFormat) {
1553 /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
1554 /* choose a closest format */
1555 internalFormat = GL_RGB5;
1561 renderbuffer_storage(target, internalFormat, width, height, 0);
1566 _mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
1568 struct gl_renderbuffer *rb;
1569 GET_CURRENT_CONTEXT(ctx);
1571 ASSERT_OUTSIDE_BEGIN_END(ctx);
1573 if (target != GL_RENDERBUFFER_EXT) {
1574 _mesa_error(ctx, GL_INVALID_ENUM,
1575 "glGetRenderbufferParameterivEXT(target)");
1579 rb = ctx->CurrentRenderbuffer;
1581 _mesa_error(ctx, GL_INVALID_OPERATION,
1582 "glGetRenderbufferParameterivEXT");
1586 /* No need to flush here since we're just quering state which is
1587 * not effected by rendering.
1591 case GL_RENDERBUFFER_WIDTH_EXT:
1592 *params = rb->Width;
1594 case GL_RENDERBUFFER_HEIGHT_EXT:
1595 *params = rb->Height;
1597 case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
1598 *params = rb->InternalFormat;
1600 case GL_RENDERBUFFER_RED_SIZE_EXT:
1601 case GL_RENDERBUFFER_GREEN_SIZE_EXT:
1602 case GL_RENDERBUFFER_BLUE_SIZE_EXT:
1603 case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
1604 case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
1605 case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
1606 *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
1608 case GL_RENDERBUFFER_SAMPLES:
1609 if (ctx->Extensions.ARB_framebuffer_object) {
1610 *params = rb->NumSamples;
1615 _mesa_error(ctx, GL_INVALID_ENUM,
1616 "glGetRenderbufferParameterivEXT(target)");
1622 GLboolean GLAPIENTRY
1623 _mesa_IsFramebufferEXT(GLuint framebuffer)
1625 GET_CURRENT_CONTEXT(ctx);
1626 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
1628 struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
1629 if (rb != NULL && rb != &DummyFramebuffer)
1637 * Check if any of the attachments of the given framebuffer are textures
1638 * (render to texture). Call ctx->Driver.RenderTexture() for such
1642 check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1645 ASSERT(ctx->Driver.RenderTexture);
1647 if (is_winsys_fbo(fb))
1648 return; /* can't render to texture with winsys framebuffers */
1650 for (i = 0; i < BUFFER_COUNT; i++) {
1651 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1652 if (att->Texture && _mesa_get_attachment_teximage(att)) {
1653 ctx->Driver.RenderTexture(ctx, fb, att);
1660 * Examine all the framebuffer's attachments to see if any are textures.
1661 * If so, call ctx->Driver.FinishRenderTexture() for each texture to
1662 * notify the device driver that the texture image may have changed.
1665 check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
1667 if (is_winsys_fbo(fb))
1668 return; /* can't render to texture with winsys framebuffers */
1670 if (ctx->Driver.FinishRenderTexture) {
1672 for (i = 0; i < BUFFER_COUNT; i++) {
1673 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1674 if (att->Texture && att->Renderbuffer) {
1675 ctx->Driver.FinishRenderTexture(ctx, att);
1683 _mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
1685 struct gl_framebuffer *newDrawFb, *newReadFb;
1686 struct gl_framebuffer *oldDrawFb, *oldReadFb;
1687 GLboolean bindReadBuf, bindDrawBuf;
1688 GET_CURRENT_CONTEXT(ctx);
1691 if (ctx->Extensions.ARB_framebuffer_object) {
1692 ASSERT(ctx->Extensions.EXT_framebuffer_object);
1693 ASSERT(ctx->Extensions.EXT_framebuffer_blit);
1697 ASSERT_OUTSIDE_BEGIN_END(ctx);
1699 if (!ctx->Extensions.EXT_framebuffer_object) {
1700 _mesa_error(ctx, GL_INVALID_OPERATION,
1701 "glBindFramebufferEXT(unsupported)");
1706 #if FEATURE_EXT_framebuffer_blit
1707 case GL_DRAW_FRAMEBUFFER_EXT:
1708 if (!ctx->Extensions.EXT_framebuffer_blit) {
1709 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1712 bindDrawBuf = GL_TRUE;
1713 bindReadBuf = GL_FALSE;
1715 case GL_READ_FRAMEBUFFER_EXT:
1716 if (!ctx->Extensions.EXT_framebuffer_blit) {
1717 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1720 bindDrawBuf = GL_FALSE;
1721 bindReadBuf = GL_TRUE;
1724 case GL_FRAMEBUFFER_EXT:
1725 bindDrawBuf = GL_TRUE;
1726 bindReadBuf = GL_TRUE;
1729 _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
1734 /* Binding a user-created framebuffer object */
1735 newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
1736 if (newDrawFb == &DummyFramebuffer) {
1737 /* ID was reserved, but no real framebuffer object made yet */
1740 else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
1741 /* All FBO IDs must be Gen'd */
1742 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
1747 /* create new framebuffer object */
1748 newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
1750 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
1753 _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
1755 newReadFb = newDrawFb;
1758 /* Binding the window system framebuffer (which was originally set
1759 * with MakeCurrent).
1761 newDrawFb = ctx->WinSysDrawBuffer;
1762 newReadFb = ctx->WinSysReadBuffer;
1766 ASSERT(newDrawFb != &DummyFramebuffer);
1768 /* save pointers to current/old framebuffers */
1769 oldDrawFb = ctx->DrawBuffer;
1770 oldReadFb = ctx->ReadBuffer;
1772 /* check if really changing bindings */
1773 if (oldDrawFb == newDrawFb)
1774 bindDrawBuf = GL_FALSE;
1775 if (oldReadFb == newReadFb)
1776 bindReadBuf = GL_FALSE;
1779 * OK, now bind the new Draw/Read framebuffers, if they're changing.
1781 * We also check if we're beginning and/or ending render-to-texture.
1782 * When a framebuffer with texture attachments is unbound, call
1783 * ctx->Driver.FinishRenderTexture().
1784 * When a framebuffer with texture attachments is bound, call
1785 * ctx->Driver.RenderTexture().
1787 * Note that if the ReadBuffer has texture attachments we don't consider
1788 * that a render-to-texture case.
1791 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1793 /* check if old readbuffer was render-to-texture */
1794 check_end_texture_render(ctx, oldReadFb);
1796 _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
1800 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1802 /* check if old read/draw buffers were render-to-texture */
1804 check_end_texture_render(ctx, oldReadFb);
1806 if (oldDrawFb != oldReadFb)
1807 check_end_texture_render(ctx, oldDrawFb);
1809 /* check if newly bound framebuffer has any texture attachments */
1810 check_begin_texture_render(ctx, newDrawFb);
1812 _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
1815 if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
1816 ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
1822 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1825 GET_CURRENT_CONTEXT(ctx);
1827 ASSERT_OUTSIDE_BEGIN_END(ctx);
1828 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1830 for (i = 0; i < n; i++) {
1831 if (framebuffers[i] > 0) {
1832 struct gl_framebuffer *fb;
1833 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1835 ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1837 /* check if deleting currently bound framebuffer object */
1838 if (ctx->Extensions.EXT_framebuffer_blit) {
1839 /* separate draw/read binding points */
1840 if (fb == ctx->DrawBuffer) {
1842 ASSERT(fb->RefCount >= 2);
1843 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
1845 if (fb == ctx->ReadBuffer) {
1847 ASSERT(fb->RefCount >= 2);
1848 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
1852 /* only one binding point for read/draw buffers */
1853 if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
1855 ASSERT(fb->RefCount >= 2);
1856 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1860 /* remove from hash table immediately, to free the ID */
1861 _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1863 if (fb != &DummyFramebuffer) {
1864 /* But the object will not be freed until it's no longer
1865 * bound in any context.
1867 _mesa_reference_framebuffer(&fb, NULL);
1876 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1878 GET_CURRENT_CONTEXT(ctx);
1882 ASSERT_OUTSIDE_BEGIN_END(ctx);
1885 _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1892 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1894 for (i = 0; i < n; i++) {
1895 GLuint name = first + i;
1896 framebuffers[i] = name;
1897 /* insert dummy placeholder into hash table */
1898 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1899 _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1900 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1907 _mesa_CheckFramebufferStatusEXT(GLenum target)
1909 struct gl_framebuffer *buffer;
1910 GET_CURRENT_CONTEXT(ctx);
1912 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1914 buffer = get_framebuffer_target(ctx, target);
1916 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1920 if (is_winsys_fbo(buffer)) {
1921 /* The window system / default framebuffer is always complete */
1922 return GL_FRAMEBUFFER_COMPLETE_EXT;
1925 /* No need to flush here */
1927 if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
1928 _mesa_test_framebuffer_completeness(ctx, buffer);
1931 return buffer->_Status;
1935 * Replicate the src attachment point. Used by framebuffer_texture() when
1936 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1937 * GL_STENCIL_ATTACHMENT.
1940 reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb,
1941 gl_buffer_index dst,
1942 gl_buffer_index src)
1944 struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst];
1945 struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src];
1947 assert(src_att->Texture != NULL);
1948 assert (src_att->Renderbuffer != NULL);
1950 _mesa_reference_texobj(&dst_att->Texture, src_att->Texture);
1951 _mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer);
1952 dst_att->Type = src_att->Type;
1953 dst_att->Complete = src_att->Complete;
1954 dst_att->TextureLevel = src_att->TextureLevel;
1955 dst_att->Zoffset = src_att->Zoffset;
1959 * Common code called by glFramebufferTexture1D/2D/3DEXT().
1962 framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
1963 GLenum attachment, GLenum textarget, GLuint texture,
1964 GLint level, GLint zoffset)
1966 struct gl_renderbuffer_attachment *att;
1967 struct gl_texture_object *texObj = NULL;
1968 struct gl_framebuffer *fb;
1970 ASSERT_OUTSIDE_BEGIN_END(ctx);
1972 fb = get_framebuffer_target(ctx, target);
1974 _mesa_error(ctx, GL_INVALID_ENUM,
1975 "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
1979 /* check framebuffer binding */
1980 if (is_winsys_fbo(fb)) {
1981 _mesa_error(ctx, GL_INVALID_OPERATION,
1982 "glFramebufferTexture%sEXT", caller);
1987 /* The textarget, level, and zoffset parameters are only validated if
1988 * texture is non-zero.
1991 GLboolean err = GL_TRUE;
1993 texObj = _mesa_lookup_texture(ctx, texture);
1994 if (texObj != NULL) {
1995 if (textarget == 0) {
1996 /* XXX what's the purpose of this? */
1997 err = (texObj->Target != GL_TEXTURE_3D) &&
1998 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1999 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
2002 err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
2003 ? !_mesa_is_cube_face(textarget)
2004 : (texObj->Target != textarget);
2008 /* can't render to a non-existant texture */
2009 _mesa_error(ctx, GL_INVALID_OPERATION,
2010 "glFramebufferTexture%sEXT(non existant texture)",
2016 _mesa_error(ctx, GL_INVALID_OPERATION,
2017 "glFramebufferTexture%sEXT(texture target mismatch)",
2022 if (texObj->Target == GL_TEXTURE_3D) {
2023 const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
2024 if (zoffset < 0 || zoffset >= maxSize) {
2025 _mesa_error(ctx, GL_INVALID_VALUE,
2026 "glFramebufferTexture%sEXT(zoffset)", caller);
2030 else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
2031 (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
2032 if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
2033 _mesa_error(ctx, GL_INVALID_VALUE,
2034 "glFramebufferTexture%sEXT(layer)", caller);
2040 (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
2041 _mesa_error(ctx, GL_INVALID_VALUE,
2042 "glFramebufferTexture%sEXT(level)", caller);
2047 att = _mesa_get_attachment(ctx, fb, attachment);
2049 _mesa_error(ctx, GL_INVALID_ENUM,
2050 "glFramebufferTexture%sEXT(attachment)", caller);
2054 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2056 _glthread_LOCK_MUTEX(fb->Mutex);
2058 if (attachment == GL_DEPTH_ATTACHMENT &&
2059 texObj == fb->Attachment[BUFFER_STENCIL].Texture) {
2060 /* The texture object is already attached to the stencil attachment
2061 * point. Don't create a new renderbuffer; just reuse the stencil
2062 * attachment's. This is required to prevent a GL error in
2063 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2065 reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH,
2067 } else if (attachment == GL_STENCIL_ATTACHMENT &&
2068 texObj== fb->Attachment[BUFFER_DEPTH].Texture) {
2069 /* As above, but with depth and stencil juxtasposed. */
2070 reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL,
2073 _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
2075 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2076 /* Above we created a new renderbuffer and attached it to the
2077 * depth attachment point. Now attach it to the stencil attachment
2080 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2081 reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL,
2086 /* Set the render-to-texture flag. We'll check this flag in
2087 * glTexImage() and friends to determine if we need to revalidate
2088 * any FBOs that might be rendering into this texture.
2089 * This flag never gets cleared since it's non-trivial to determine
2090 * when all FBOs might be done rendering to this texture. That's OK
2091 * though since it's uncommon to render to a texture then repeatedly
2092 * call glTexImage() to change images in the texture.
2094 texObj->_RenderToTexture = GL_TRUE;
2097 _mesa_remove_attachment(ctx, att);
2098 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2099 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2100 _mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]);
2104 invalidate_framebuffer(fb);
2106 _glthread_UNLOCK_MUTEX(fb->Mutex);
2112 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
2113 GLenum textarget, GLuint texture, GLint level)
2115 GET_CURRENT_CONTEXT(ctx);
2120 switch (textarget) {
2124 case GL_TEXTURE_1D_ARRAY:
2125 error = !ctx->Extensions.EXT_texture_array;
2132 _mesa_error(ctx, GL_INVALID_OPERATION,
2133 "glFramebufferTexture1DEXT(textarget=%s)",
2134 _mesa_lookup_enum_by_nr(textarget));
2139 framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
2145 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
2146 GLenum textarget, GLuint texture, GLint level)
2148 GET_CURRENT_CONTEXT(ctx);
2153 switch (textarget) {
2157 case GL_TEXTURE_RECTANGLE:
2158 error = !ctx->Extensions.NV_texture_rectangle;
2160 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
2161 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
2162 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
2163 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
2164 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
2165 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
2166 error = !ctx->Extensions.ARB_texture_cube_map;
2168 case GL_TEXTURE_2D_ARRAY:
2169 error = !ctx->Extensions.EXT_texture_array;
2176 _mesa_error(ctx, GL_INVALID_OPERATION,
2177 "glFramebufferTexture2DEXT(textarget=%s)",
2178 _mesa_lookup_enum_by_nr(textarget));
2183 framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
2189 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
2190 GLenum textarget, GLuint texture,
2191 GLint level, GLint zoffset)
2193 GET_CURRENT_CONTEXT(ctx);
2195 if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
2196 _mesa_error(ctx, GL_INVALID_OPERATION,
2197 "glFramebufferTexture3DEXT(textarget)");
2201 framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
2207 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
2208 GLuint texture, GLint level, GLint layer)
2210 GET_CURRENT_CONTEXT(ctx);
2212 framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
2218 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
2219 GLenum renderbufferTarget,
2220 GLuint renderbuffer)
2222 struct gl_renderbuffer_attachment *att;
2223 struct gl_framebuffer *fb;
2224 struct gl_renderbuffer *rb;
2225 GET_CURRENT_CONTEXT(ctx);
2227 ASSERT_OUTSIDE_BEGIN_END(ctx);
2229 fb = get_framebuffer_target(ctx, target);
2231 _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
2235 if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
2236 _mesa_error(ctx, GL_INVALID_ENUM,
2237 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2241 if (is_winsys_fbo(fb)) {
2242 /* Can't attach new renderbuffers to a window system framebuffer */
2243 _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
2247 att = _mesa_get_attachment(ctx, fb, attachment);
2249 _mesa_error(ctx, GL_INVALID_ENUM,
2250 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2251 _mesa_lookup_enum_by_nr(attachment));
2256 rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
2258 _mesa_error(ctx, GL_INVALID_OPERATION,
2259 "glFramebufferRenderbufferEXT(non-existant"
2260 " renderbuffer %u)", renderbuffer);
2263 else if (rb == &DummyRenderbuffer) {
2264 /* This is what NVIDIA does */
2265 _mesa_error(ctx, GL_INVALID_VALUE,
2266 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2272 /* remove renderbuffer attachment */
2276 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
2277 rb && rb->Format != MESA_FORMAT_NONE) {
2278 /* make sure the renderbuffer is a depth/stencil format */
2279 const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
2280 if (baseFormat != GL_DEPTH_STENCIL) {
2281 _mesa_error(ctx, GL_INVALID_OPERATION,
2282 "glFramebufferRenderbufferEXT(renderbuffer"
2283 " is not DEPTH_STENCIL format)");
2289 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2291 assert(ctx->Driver.FramebufferRenderbuffer);
2292 ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
2294 /* Some subsequent GL commands may depend on the framebuffer's visual
2295 * after the binding is updated. Update visual info now.
2297 _mesa_update_framebuffer_visual(ctx, fb);
2302 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
2303 GLenum pname, GLint *params)
2305 const struct gl_renderbuffer_attachment *att;
2306 struct gl_framebuffer *buffer;
2308 GET_CURRENT_CONTEXT(ctx);
2310 ASSERT_OUTSIDE_BEGIN_END(ctx);
2312 /* The error differs in GL andd GLES. */
2313 err = ctx->API == API_OPENGL ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
2315 buffer = get_framebuffer_target(ctx, target);
2317 _mesa_error(ctx, GL_INVALID_ENUM,
2318 "glGetFramebufferAttachmentParameterivEXT(target)");
2322 if (is_winsys_fbo(buffer)) {
2323 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2326 * "If the framebuffer currently bound to target is zero, then
2327 * INVALID_OPERATION is generated."
2329 * The EXT_framebuffer_object spec has the same wording, and the
2330 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2333 if (ctx->API != API_OPENGL || !ctx->Extensions.ARB_framebuffer_object) {
2334 _mesa_error(ctx, GL_INVALID_OPERATION,
2335 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2338 /* the default / window-system FBO */
2339 att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
2342 /* user-created framebuffer FBO */
2343 att = _mesa_get_attachment(ctx, buffer, attachment);
2347 _mesa_error(ctx, GL_INVALID_ENUM,
2348 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2352 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2353 /* the depth and stencil attachments must point to the same buffer */
2354 const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
2355 depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
2356 stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
2357 if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
2358 _mesa_error(ctx, GL_INVALID_OPERATION,
2359 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2360 " attachments differ)");
2365 /* No need to flush here */
2368 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
2369 *params = is_winsys_fbo(buffer) ? GL_FRAMEBUFFER_DEFAULT : att->Type;
2371 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
2372 if (att->Type == GL_RENDERBUFFER_EXT) {
2373 *params = att->Renderbuffer->Name;
2375 else if (att->Type == GL_TEXTURE) {
2376 *params = att->Texture->Name;
2379 assert(att->Type == GL_NONE);
2380 if (ctx->API == API_OPENGL) {
2383 _mesa_error(ctx, GL_INVALID_ENUM,
2384 "glGetFramebufferAttachmentParameterivEXT(pname)");
2388 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
2389 if (att->Type == GL_TEXTURE) {
2390 *params = att->TextureLevel;
2392 else if (att->Type == GL_NONE) {
2393 _mesa_error(ctx, err,
2394 "glGetFramebufferAttachmentParameterivEXT(pname)");
2397 _mesa_error(ctx, GL_INVALID_ENUM,
2398 "glGetFramebufferAttachmentParameterivEXT(pname)");
2401 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
2402 if (att->Type == GL_TEXTURE) {
2403 if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
2404 *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
2410 else if (att->Type == GL_NONE) {
2411 _mesa_error(ctx, err,
2412 "glGetFramebufferAttachmentParameterivEXT(pname)");
2415 _mesa_error(ctx, GL_INVALID_ENUM,
2416 "glGetFramebufferAttachmentParameterivEXT(pname)");
2419 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
2420 if (att->Type == GL_TEXTURE) {
2421 if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
2422 *params = att->Zoffset;
2428 else if (att->Type == GL_NONE) {
2429 _mesa_error(ctx, err,
2430 "glGetFramebufferAttachmentParameterivEXT(pname)");
2433 _mesa_error(ctx, GL_INVALID_ENUM,
2434 "glGetFramebufferAttachmentParameterivEXT(pname)");
2437 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
2438 if (!ctx->Extensions.ARB_framebuffer_object) {
2439 _mesa_error(ctx, GL_INVALID_ENUM,
2440 "glGetFramebufferAttachmentParameterivEXT(pname)");
2442 else if (att->Type == GL_NONE) {
2443 _mesa_error(ctx, err,
2444 "glGetFramebufferAttachmentParameterivEXT(pname)");
2447 if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) {
2448 *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
2451 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2452 * if the sRGB conversion is unsupported. */
2453 *params = GL_LINEAR;
2457 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
2458 if (!ctx->Extensions.ARB_framebuffer_object) {
2459 _mesa_error(ctx, GL_INVALID_ENUM,
2460 "glGetFramebufferAttachmentParameterivEXT(pname)");
2463 else if (att->Type == GL_NONE) {
2464 _mesa_error(ctx, err,
2465 "glGetFramebufferAttachmentParameterivEXT(pname)");
2468 gl_format format = att->Renderbuffer->Format;
2469 if (format == MESA_FORMAT_S8) {
2473 else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
2474 /* depends on the attachment parameter */
2475 if (attachment == GL_STENCIL_ATTACHMENT) {
2483 *params = _mesa_get_format_datatype(format);
2487 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
2488 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
2489 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
2490 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
2491 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
2492 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
2493 if (!ctx->Extensions.ARB_framebuffer_object) {
2494 _mesa_error(ctx, GL_INVALID_ENUM,
2495 "glGetFramebufferAttachmentParameterivEXT(pname)");
2497 else if (att->Type == GL_NONE) {
2498 _mesa_error(ctx, err,
2499 "glGetFramebufferAttachmentParameterivEXT(pname)");
2501 else if (att->Texture) {
2502 const struct gl_texture_image *texImage =
2503 _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
2506 *params = get_component_bits(pname, texImage->_BaseFormat,
2507 texImage->TexFormat);
2513 else if (att->Renderbuffer) {
2514 *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
2515 att->Renderbuffer->Format);
2518 _mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:"
2519 " invalid FBO attachment structure");
2523 _mesa_error(ctx, GL_INVALID_ENUM,
2524 "glGetFramebufferAttachmentParameterivEXT(pname)");
2531 _mesa_GenerateMipmapEXT(GLenum target)
2533 struct gl_texture_image *srcImage;
2534 struct gl_texture_object *texObj;
2537 GET_CURRENT_CONTEXT(ctx);
2539 ASSERT_OUTSIDE_BEGIN_END(ctx);
2540 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2548 case GL_TEXTURE_CUBE_MAP:
2549 error = !ctx->Extensions.ARB_texture_cube_map;
2551 case GL_TEXTURE_1D_ARRAY:
2552 case GL_TEXTURE_2D_ARRAY:
2553 error = !ctx->Extensions.EXT_texture_array;
2560 _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
2561 _mesa_lookup_enum_by_nr(target));
2565 texObj = _mesa_get_current_tex_object(ctx, target);
2567 if (texObj->BaseLevel >= texObj->MaxLevel) {
2572 if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
2573 !_mesa_cube_complete(texObj)) {
2574 _mesa_error(ctx, GL_INVALID_OPERATION,
2575 "glGenerateMipmap(incomplete cube map)");
2579 _mesa_lock_texture(ctx, texObj);
2581 srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
2583 _mesa_unlock_texture(ctx, texObj);
2587 if (target == GL_TEXTURE_CUBE_MAP) {
2589 for (face = 0; face < 6; face++)
2590 ctx->Driver.GenerateMipmap(ctx,
2591 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
2595 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2597 _mesa_unlock_texture(ctx, texObj);
2601 #if FEATURE_EXT_framebuffer_blit
2603 static const struct gl_renderbuffer_attachment *
2604 find_attachment(const struct gl_framebuffer *fb,
2605 const struct gl_renderbuffer *rb)
2608 for (i = 0; i < Elements(fb->Attachment); i++) {
2609 if (fb->Attachment[i].Renderbuffer == rb)
2610 return &fb->Attachment[i];
2618 * Blit rectangular region, optionally from one framebuffer to another.
2620 * Note, if the src buffer is multisampled and the dest is not, this is
2621 * when the samples must be resolved to a single color.
2624 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
2625 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
2626 GLbitfield mask, GLenum filter)
2628 const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
2629 GL_DEPTH_BUFFER_BIT |
2630 GL_STENCIL_BUFFER_BIT);
2631 const struct gl_framebuffer *readFb, *drawFb;
2632 const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
2633 GET_CURRENT_CONTEXT(ctx);
2635 ASSERT_OUTSIDE_BEGIN_END(ctx);
2636 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2638 if (MESA_VERBOSE & VERBOSE_API)
2640 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2641 srcX0, srcY0, srcX1, srcY1,
2642 dstX0, dstY0, dstX1, dstY1,
2643 mask, _mesa_lookup_enum_by_nr(filter));
2645 if (ctx->NewState) {
2646 _mesa_update_state(ctx);
2649 readFb = ctx->ReadBuffer;
2650 drawFb = ctx->DrawBuffer;
2652 if (!readFb || !drawFb) {
2653 /* This will normally never happen but someday we may want to
2654 * support MakeCurrent() with no drawables.
2659 /* check for complete framebuffers */
2660 if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
2661 readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2662 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2663 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2667 if (filter != GL_NEAREST && filter != GL_LINEAR) {
2668 _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
2672 if (mask & ~legalMaskBits) {
2673 _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
2677 /* depth/stencil must be blitted with nearest filtering */
2678 if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
2679 && filter != GL_NEAREST) {
2680 _mesa_error(ctx, GL_INVALID_OPERATION,
2681 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2685 /* get color read/draw renderbuffers */
2686 if (mask & GL_COLOR_BUFFER_BIT) {
2687 colorReadRb = readFb->_ColorReadBuffer;
2688 colorDrawRb = drawFb->_ColorDrawBuffers[0];
2690 /* From the EXT_framebuffer_object spec:
2692 * "If a buffer is specified in <mask> and does not exist in both
2693 * the read and draw framebuffers, the corresponding bit is silently
2696 if ((colorReadRb == NULL) || (colorDrawRb == NULL)) {
2697 colorReadRb = colorDrawRb = NULL;
2698 mask &= ~GL_COLOR_BUFFER_BIT;
2702 colorReadRb = colorDrawRb = NULL;
2705 if (mask & GL_STENCIL_BUFFER_BIT) {
2706 struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
2707 struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
2709 /* From the EXT_framebuffer_object spec:
2711 * "If a buffer is specified in <mask> and does not exist in both
2712 * the read and draw framebuffers, the corresponding bit is silently
2715 if ((readRb == NULL) || (drawRb == NULL)) {
2716 readRb = drawRb = NULL;
2717 mask &= ~GL_STENCIL_BUFFER_BIT;
2719 else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
2720 _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
2721 _mesa_error(ctx, GL_INVALID_OPERATION,
2722 "glBlitFramebufferEXT(stencil buffer size mismatch)");
2727 if (mask & GL_DEPTH_BUFFER_BIT) {
2728 struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
2729 struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
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 readRb = drawRb = NULL;
2739 mask &= ~GL_DEPTH_BUFFER_BIT;
2741 else if (_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
2742 _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
2743 _mesa_error(ctx, GL_INVALID_OPERATION,
2744 "glBlitFramebufferEXT(depth buffer size mismatch)");
2749 if (readFb->Visual.samples > 0 &&
2750 drawFb->Visual.samples > 0 &&
2751 readFb->Visual.samples != drawFb->Visual.samples) {
2752 _mesa_error(ctx, GL_INVALID_OPERATION,
2753 "glBlitFramebufferEXT(mismatched samples");
2757 /* extra checks for multisample copies... */
2758 if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
2759 /* src and dest region sizes must be the same */
2760 if (srcX1 - srcX0 != dstX1 - dstX0 ||
2761 srcY1 - srcY0 != dstY1 - dstY0) {
2762 _mesa_error(ctx, GL_INVALID_OPERATION,
2763 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2767 /* color formats must match */
2770 colorReadRb->Format != colorDrawRb->Format) {
2771 _mesa_error(ctx, GL_INVALID_OPERATION,
2772 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2777 if (!ctx->Extensions.EXT_framebuffer_blit) {
2778 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
2784 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2786 srcX0, srcY0, srcX1, srcY1,
2787 dstX0, dstY0, dstX1, dstY1,
2790 const struct gl_renderbuffer_attachment *att;
2792 att = find_attachment(readFb, colorReadRb);
2793 printf(" Src FBO %u RB %u (%dx%d) ",
2794 readFb->Name, colorReadRb->Name,
2795 colorReadRb->Width, colorReadRb->Height);
2796 if (att && att->Texture) {
2797 printf("Tex %u tgt 0x%x level %u face %u",
2799 att->Texture->Target,
2805 att = find_attachment(drawFb, colorDrawRb);
2806 printf(" Dst FBO %u RB %u (%dx%d) ",
2807 drawFb->Name, colorDrawRb->Name,
2808 colorDrawRb->Width, colorDrawRb->Height);
2809 if (att && att->Texture) {
2810 printf("Tex %u tgt 0x%x level %u face %u",
2812 att->Texture->Target,
2824 ASSERT(ctx->Driver.BlitFramebuffer);
2825 ctx->Driver.BlitFramebuffer(ctx,
2826 srcX0, srcY0, srcX1, srcY1,
2827 dstX0, dstY0, dstX1, dstY1,
2830 #endif /* FEATURE_EXT_framebuffer_blit */
2832 #if FEATURE_ARB_geometry_shader4
2834 _mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
2835 GLuint texture, GLint level)
2837 GET_CURRENT_CONTEXT(ctx);
2838 _mesa_error(ctx, GL_INVALID_OPERATION,
2839 "glFramebufferTextureARB "
2840 "not implemented!");
2844 _mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
2845 GLuint texture, GLint level, GLenum face)
2847 GET_CURRENT_CONTEXT(ctx);
2848 _mesa_error(ctx, GL_INVALID_OPERATION,
2849 "glFramebufferTextureFaceARB "
2850 "not implemented!");
2852 #endif /* FEATURE_ARB_geometry_shader4 */