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"
41 #include "glformats.h"
44 #include "mfeatures.h"
46 #include "renderbuffer.h"
52 /** Set this to 1 to debug/log glBlitFramebuffer() calls */
59 * None of the GL_EXT_framebuffer_object functions are compiled into
66 * When glGenRender/FramebuffersEXT() is called we insert pointers to
67 * these placeholder objects into the hash table.
68 * Later, when the object ID is first bound, we replace the placeholder
69 * with the real frame/renderbuffer.
71 static struct gl_framebuffer DummyFramebuffer;
72 static struct gl_renderbuffer DummyRenderbuffer;
74 /* We bind this framebuffer when applications pass a NULL
75 * drawable/surface in make current. */
76 static struct gl_framebuffer IncompleteFramebuffer;
80 delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
86 delete_dummy_framebuffer(struct gl_framebuffer *fb)
93 _mesa_init_fbobjects(struct gl_context *ctx)
95 _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
96 _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
97 _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
98 DummyFramebuffer.Delete = delete_dummy_framebuffer;
99 DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
100 IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
103 struct gl_framebuffer *
104 _mesa_get_incomplete_framebuffer(void)
106 return &IncompleteFramebuffer;
110 * Helper routine for getting a gl_renderbuffer.
112 struct gl_renderbuffer *
113 _mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
115 struct gl_renderbuffer *rb;
120 rb = (struct gl_renderbuffer *)
121 _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
127 * Helper routine for getting a gl_framebuffer.
129 struct gl_framebuffer *
130 _mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
132 struct gl_framebuffer *fb;
137 fb = (struct gl_framebuffer *)
138 _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
144 * Mark the given framebuffer as invalid. This will force the
145 * test for framebuffer completeness to be done before the framebuffer
149 invalidate_framebuffer(struct gl_framebuffer *fb)
151 fb->_Status = 0; /* "indeterminate" */
156 * Return the gl_framebuffer object which corresponds to the given
157 * framebuffer target, such as GL_DRAW_FRAMEBUFFER.
158 * Check support for GL_EXT_framebuffer_blit to determine if certain
160 * \return gl_framebuffer pointer or NULL if target is illegal
162 static struct gl_framebuffer *
163 get_framebuffer_target(struct gl_context *ctx, GLenum target)
166 case GL_DRAW_FRAMEBUFFER:
167 return ctx->Extensions.EXT_framebuffer_blit && _mesa_is_desktop_gl(ctx)
168 ? ctx->DrawBuffer : NULL;
169 case GL_READ_FRAMEBUFFER:
170 return ctx->Extensions.EXT_framebuffer_blit && _mesa_is_desktop_gl(ctx)
171 ? ctx->ReadBuffer : NULL;
172 case GL_FRAMEBUFFER_EXT:
173 return ctx->DrawBuffer;
181 * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
182 * gl_renderbuffer_attachment object.
183 * This function is only used for user-created FB objects, not the
184 * default / window-system FB object.
185 * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
186 * the depth buffer attachment point.
188 struct gl_renderbuffer_attachment *
189 _mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
194 assert(_mesa_is_user_fbo(fb));
196 switch (attachment) {
197 case GL_COLOR_ATTACHMENT0_EXT:
198 case GL_COLOR_ATTACHMENT1_EXT:
199 case GL_COLOR_ATTACHMENT2_EXT:
200 case GL_COLOR_ATTACHMENT3_EXT:
201 case GL_COLOR_ATTACHMENT4_EXT:
202 case GL_COLOR_ATTACHMENT5_EXT:
203 case GL_COLOR_ATTACHMENT6_EXT:
204 case GL_COLOR_ATTACHMENT7_EXT:
205 case GL_COLOR_ATTACHMENT8_EXT:
206 case GL_COLOR_ATTACHMENT9_EXT:
207 case GL_COLOR_ATTACHMENT10_EXT:
208 case GL_COLOR_ATTACHMENT11_EXT:
209 case GL_COLOR_ATTACHMENT12_EXT:
210 case GL_COLOR_ATTACHMENT13_EXT:
211 case GL_COLOR_ATTACHMENT14_EXT:
212 case GL_COLOR_ATTACHMENT15_EXT:
213 /* Only OpenGL ES 1.x forbids color attachments other than
214 * GL_COLOR_ATTACHMENT0. For all other APIs the limit set by the
217 i = attachment - GL_COLOR_ATTACHMENT0_EXT;
218 if (i >= ctx->Const.MaxColorAttachments
219 || (i > 0 && ctx->API == API_OPENGLES)) {
222 return &fb->Attachment[BUFFER_COLOR0 + i];
223 case GL_DEPTH_STENCIL_ATTACHMENT:
224 if (!_mesa_is_desktop_gl(ctx))
227 case GL_DEPTH_ATTACHMENT_EXT:
228 return &fb->Attachment[BUFFER_DEPTH];
229 case GL_STENCIL_ATTACHMENT_EXT:
230 return &fb->Attachment[BUFFER_STENCIL];
238 * As above, but only used for getting attachments of the default /
239 * window-system framebuffer (not user-created framebuffer objects).
241 static struct gl_renderbuffer_attachment *
242 _mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
245 assert(_mesa_is_winsys_fbo(fb));
247 switch (attachment) {
249 return &fb->Attachment[BUFFER_FRONT_LEFT];
251 return &fb->Attachment[BUFFER_FRONT_RIGHT];
253 return &fb->Attachment[BUFFER_BACK_LEFT];
255 return &fb->Attachment[BUFFER_BACK_RIGHT];
257 if (fb->Visual.numAuxBuffers == 1) {
258 return &fb->Attachment[BUFFER_AUX0];
262 /* Page 336 (page 352 of the PDF) of the OpenGL 3.0 spec says:
264 * "If the default framebuffer is bound to target, then attachment must
265 * be one of FRONT LEFT, FRONT RIGHT, BACK LEFT, BACK RIGHT, or AUXi,
266 * identifying a color buffer; DEPTH, identifying the depth buffer; or
267 * STENCIL, identifying the stencil buffer."
269 * Revision #34 of the ARB_framebuffer_object spec has essentially the same
270 * language. However, revision #33 of the ARB_framebuffer_object spec
273 * "If the default framebuffer is bound to <target>, then <attachment>
274 * must be one of FRONT_LEFT, FRONT_RIGHT, BACK_LEFT, BACK_RIGHT, AUXi,
275 * DEPTH_BUFFER, or STENCIL_BUFFER, identifying a color buffer, the
276 * depth buffer, or the stencil buffer, and <pname> may be
277 * FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or
278 * FRAMEBUFFER_ATTACHMENT_OBJECT_NAME."
280 * The enum values for DEPTH_BUFFER and STENCIL_BUFFER have been removed
281 * from glext.h, so shipping apps should not use those values.
283 * Note that neither EXT_framebuffer_object nor OES_framebuffer_object
284 * support queries of the window system FBO.
287 return &fb->Attachment[BUFFER_DEPTH];
289 return &fb->Attachment[BUFFER_STENCIL];
298 * Remove any texture or renderbuffer attached to the given attachment
299 * point. Update reference counts, etc.
302 _mesa_remove_attachment(struct gl_context *ctx,
303 struct gl_renderbuffer_attachment *att)
305 if (att->Type == GL_TEXTURE) {
306 ASSERT(att->Texture);
307 if (ctx->Driver.FinishRenderTexture) {
308 /* tell driver that we're done rendering to this texture. */
309 ctx->Driver.FinishRenderTexture(ctx, att);
311 _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
312 ASSERT(!att->Texture);
314 if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
315 ASSERT(!att->Texture);
316 _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
317 ASSERT(!att->Renderbuffer);
320 att->Complete = GL_TRUE;
325 * Bind a texture object to an attachment point.
326 * The previous binding, if any, will be removed first.
329 _mesa_set_texture_attachment(struct gl_context *ctx,
330 struct gl_framebuffer *fb,
331 struct gl_renderbuffer_attachment *att,
332 struct gl_texture_object *texObj,
333 GLenum texTarget, GLuint level, GLuint zoffset)
335 if (att->Texture == texObj) {
336 /* re-attaching same texture */
337 ASSERT(att->Type == GL_TEXTURE);
338 if (ctx->Driver.FinishRenderTexture)
339 ctx->Driver.FinishRenderTexture(ctx, att);
343 if (ctx->Driver.FinishRenderTexture && att->Texture)
344 ctx->Driver.FinishRenderTexture(ctx, att);
345 _mesa_remove_attachment(ctx, att);
346 att->Type = GL_TEXTURE;
347 assert(!att->Texture);
348 _mesa_reference_texobj(&att->Texture, texObj);
351 /* always update these fields */
352 att->TextureLevel = level;
353 att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
354 att->Zoffset = zoffset;
355 att->Complete = GL_FALSE;
357 if (_mesa_get_attachment_teximage(att)) {
358 ctx->Driver.RenderTexture(ctx, fb, att);
361 invalidate_framebuffer(fb);
366 * Bind a renderbuffer to an attachment point.
367 * The previous binding, if any, will be removed first.
370 _mesa_set_renderbuffer_attachment(struct gl_context *ctx,
371 struct gl_renderbuffer_attachment *att,
372 struct gl_renderbuffer *rb)
374 /* XXX check if re-doing same attachment, exit early */
375 _mesa_remove_attachment(ctx, att);
376 att->Type = GL_RENDERBUFFER_EXT;
377 att->Texture = NULL; /* just to be safe */
378 att->Complete = GL_FALSE;
379 _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
384 * Fallback for ctx->Driver.FramebufferRenderbuffer()
385 * Attach a renderbuffer object to a framebuffer object.
388 _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
389 struct gl_framebuffer *fb,
390 GLenum attachment, struct gl_renderbuffer *rb)
392 struct gl_renderbuffer_attachment *att;
394 _glthread_LOCK_MUTEX(fb->Mutex);
396 att = _mesa_get_attachment(ctx, fb, attachment);
399 _mesa_set_renderbuffer_attachment(ctx, att, rb);
400 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
401 /* do stencil attachment here (depth already done above) */
402 att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
404 _mesa_set_renderbuffer_attachment(ctx, att, rb);
406 rb->AttachedAnytime = GL_TRUE;
409 _mesa_remove_attachment(ctx, att);
412 invalidate_framebuffer(fb);
414 _glthread_UNLOCK_MUTEX(fb->Mutex);
419 * Fallback for ctx->Driver.ValidateFramebuffer()
420 * Check if the renderbuffer's formats are supported by the software
422 * Drivers should probably override this.
425 _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
428 for (buf = 0; buf < BUFFER_COUNT; buf++) {
429 const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
431 switch (rb->_BaseFormat) {
433 case GL_LUMINANCE_ALPHA:
438 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
442 switch (rb->Format) {
443 /* XXX This list is likely incomplete. */
444 case MESA_FORMAT_RGB9_E5_FLOAT:
445 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
448 /* render buffer format is supported by software rendering */
460 att_incomplete(const char *msg)
462 if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) {
463 _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
472 fbo_incomplete(const char *msg, int index)
474 if (MESA_DEBUG_FLAGS & DEBUG_INCOMPLETE_FBO) {
475 _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
481 * Is the given base format a legal format for a color renderbuffer?
484 _mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
486 switch (baseFormat) {
491 case GL_LUMINANCE_ALPHA:
494 return ctx->Extensions.ARB_framebuffer_object;
497 return ctx->Extensions.ARB_texture_rg;
505 * Is the given base format a legal format for a depth/stencil renderbuffer?
508 is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
510 switch (baseFormat) {
511 case GL_DEPTH_COMPONENT:
512 case GL_DEPTH_STENCIL_EXT:
521 * Test if an attachment point is complete and update its Complete field.
522 * \param format if GL_COLOR, this is a color attachment point,
523 * if GL_DEPTH, this is a depth component attachment point,
524 * if GL_STENCIL, this is a stencil component attachment point.
527 test_attachment_completeness(const struct gl_context *ctx, GLenum format,
528 struct gl_renderbuffer_attachment *att)
530 assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
532 /* assume complete */
533 att->Complete = GL_TRUE;
535 /* Look for reasons why the attachment might be incomplete */
536 if (att->Type == GL_TEXTURE) {
537 const struct gl_texture_object *texObj = att->Texture;
538 struct gl_texture_image *texImage;
542 att_incomplete("no texobj");
543 att->Complete = GL_FALSE;
547 texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
549 att_incomplete("no teximage");
550 att->Complete = GL_FALSE;
553 if (texImage->Width < 1 || texImage->Height < 1) {
554 att_incomplete("teximage width/height=0");
555 printf("texobj = %u\n", texObj->Name);
556 printf("level = %d\n", att->TextureLevel);
557 att->Complete = GL_FALSE;
560 if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
561 att_incomplete("bad z offset");
562 att->Complete = GL_FALSE;
566 baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
568 if (format == GL_COLOR) {
569 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
570 att_incomplete("bad format");
571 att->Complete = GL_FALSE;
574 if (_mesa_is_format_compressed(texImage->TexFormat)) {
575 att_incomplete("compressed internalformat");
576 att->Complete = GL_FALSE;
580 else if (format == GL_DEPTH) {
581 if (baseFormat == GL_DEPTH_COMPONENT) {
584 else if (ctx->Extensions.EXT_packed_depth_stencil &&
585 ctx->Extensions.ARB_depth_texture &&
586 baseFormat == GL_DEPTH_STENCIL_EXT) {
590 att->Complete = GL_FALSE;
591 att_incomplete("bad depth format");
596 ASSERT(format == GL_STENCIL);
597 if (ctx->Extensions.EXT_packed_depth_stencil &&
598 ctx->Extensions.ARB_depth_texture &&
599 baseFormat == GL_DEPTH_STENCIL_EXT) {
603 /* no such thing as stencil-only textures */
604 att_incomplete("illegal stencil texture");
605 att->Complete = GL_FALSE;
610 else if (att->Type == GL_RENDERBUFFER_EXT) {
611 const GLenum baseFormat =
612 _mesa_get_format_base_format(att->Renderbuffer->Format);
614 ASSERT(att->Renderbuffer);
615 if (!att->Renderbuffer->InternalFormat ||
616 att->Renderbuffer->Width < 1 ||
617 att->Renderbuffer->Height < 1) {
618 att_incomplete("0x0 renderbuffer");
619 att->Complete = GL_FALSE;
622 if (format == GL_COLOR) {
623 if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
624 att_incomplete("bad renderbuffer color format");
625 att->Complete = GL_FALSE;
629 else if (format == GL_DEPTH) {
630 if (baseFormat == GL_DEPTH_COMPONENT) {
633 else if (ctx->Extensions.EXT_packed_depth_stencil &&
634 baseFormat == GL_DEPTH_STENCIL_EXT) {
638 att_incomplete("bad renderbuffer depth format");
639 att->Complete = GL_FALSE;
644 assert(format == GL_STENCIL);
645 if (baseFormat == GL_STENCIL_INDEX) {
648 else if (ctx->Extensions.EXT_packed_depth_stencil &&
649 baseFormat == GL_DEPTH_STENCIL_EXT) {
653 att->Complete = GL_FALSE;
654 att_incomplete("bad renderbuffer stencil format");
660 ASSERT(att->Type == GL_NONE);
668 * Test if the given framebuffer object is complete and update its
669 * Status field with the results.
670 * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
671 * driver to make hardware-specific validation/completeness checks.
672 * Also update the framebuffer's Width and Height fields if the
673 * framebuffer is complete.
676 _mesa_test_framebuffer_completeness(struct gl_context *ctx,
677 struct gl_framebuffer *fb)
680 GLenum intFormat = GL_NONE; /* color buffers' internal format */
681 GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
682 GLint numSamples = -1;
686 assert(_mesa_is_user_fbo(fb));
688 /* we're changing framebuffer fields here */
689 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
695 /* Start at -2 to more easily loop over all attachment points.
700 for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
701 struct gl_renderbuffer_attachment *att;
706 * XXX for ARB_fbo, only check color buffers that are named by
707 * GL_READ_BUFFER and GL_DRAW_BUFFERi.
710 /* check for attachment completeness
713 att = &fb->Attachment[BUFFER_DEPTH];
714 test_attachment_completeness(ctx, GL_DEPTH, att);
715 if (!att->Complete) {
716 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
717 fbo_incomplete("depth attachment incomplete", -1);
722 att = &fb->Attachment[BUFFER_STENCIL];
723 test_attachment_completeness(ctx, GL_STENCIL, att);
724 if (!att->Complete) {
725 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
726 fbo_incomplete("stencil attachment incomplete", -1);
731 att = &fb->Attachment[BUFFER_COLOR0 + i];
732 test_attachment_completeness(ctx, GL_COLOR, att);
733 if (!att->Complete) {
734 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
735 fbo_incomplete("color attachment incomplete", i);
740 /* get width, height, format of the renderbuffer/texture
742 if (att->Type == GL_TEXTURE) {
743 const struct gl_texture_image *texImg =
744 _mesa_get_attachment_teximage(att);
745 minWidth = MIN2(minWidth, texImg->Width);
746 maxWidth = MAX2(maxWidth, texImg->Width);
747 minHeight = MIN2(minHeight, texImg->Height);
748 maxHeight = MAX2(maxHeight, texImg->Height);
749 f = texImg->_BaseFormat;
750 attFormat = texImg->TexFormat;
752 if (!_mesa_is_legal_color_format(ctx, f) &&
753 !is_legal_depth_format(ctx, f)) {
754 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
755 fbo_incomplete("texture attachment incomplete", -1);
759 else if (att->Type == GL_RENDERBUFFER_EXT) {
760 minWidth = MIN2(minWidth, att->Renderbuffer->Width);
761 maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
762 minHeight = MIN2(minHeight, att->Renderbuffer->Height);
763 maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
764 f = att->Renderbuffer->InternalFormat;
765 attFormat = att->Renderbuffer->Format;
769 assert(att->Type == GL_NONE);
773 if (att->Renderbuffer && numSamples < 0) {
775 numSamples = att->Renderbuffer->NumSamples;
778 /* check if integer color */
779 fb->_IntegerColor = _mesa_is_format_integer_color(attFormat);
781 /* Error-check width, height, format, samples
783 if (numImages == 1) {
784 /* save format, num samples */
790 if (!ctx->Extensions.ARB_framebuffer_object) {
791 /* check that width, height, format are same */
792 if (minWidth != maxWidth || minHeight != maxHeight) {
793 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
794 fbo_incomplete("width or height mismatch", -1);
797 /* check that all color buffers are the same format */
798 if (intFormat != GL_NONE && f != intFormat) {
799 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
800 fbo_incomplete("format mismatch", -1);
804 if (att->Renderbuffer &&
805 att->Renderbuffer->NumSamples != numSamples) {
806 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
807 fbo_incomplete("inconsistant number of samples", i);
812 /* Check that the format is valid. (MESA_FORMAT_NONE means unsupported)
814 if (att->Type == GL_RENDERBUFFER &&
815 att->Renderbuffer->Format == MESA_FORMAT_NONE) {
816 fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
817 fbo_incomplete("unsupported renderbuffer format", i);
823 if (_mesa_is_desktop_gl(ctx) && !ctx->Extensions.ARB_ES2_compatibility) {
824 /* Check that all DrawBuffers are present */
825 for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
826 if (fb->ColorDrawBuffer[j] != GL_NONE) {
827 const struct gl_renderbuffer_attachment *att
828 = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
830 if (att->Type == GL_NONE) {
831 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
832 fbo_incomplete("missing drawbuffer", j);
838 /* Check that the ReadBuffer is present */
839 if (fb->ColorReadBuffer != GL_NONE) {
840 const struct gl_renderbuffer_attachment *att
841 = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
843 if (att->Type == GL_NONE) {
844 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
845 fbo_incomplete("missing readbuffer", -1);
854 if (numImages == 0) {
855 fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
856 fbo_incomplete("no attachments", -1);
860 /* Provisionally set status = COMPLETE ... */
861 fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
863 /* ... but the driver may say the FB is incomplete.
864 * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
867 if (ctx->Driver.ValidateFramebuffer) {
868 ctx->Driver.ValidateFramebuffer(ctx, fb);
869 if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
870 fbo_incomplete("driver marked FBO as incomplete", -1);
874 if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
876 * Note that if ARB_framebuffer_object is supported and the attached
877 * renderbuffers/textures are different sizes, the framebuffer
878 * width/height will be set to the smallest width/height.
880 fb->Width = minWidth;
881 fb->Height = minHeight;
883 /* finally, update the visual info for the framebuffer */
884 _mesa_update_framebuffer_visual(ctx, fb);
890 _mesa_IsRenderbufferEXT(GLuint renderbuffer)
892 GET_CURRENT_CONTEXT(ctx);
893 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
895 struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
896 if (rb != NULL && rb != &DummyRenderbuffer)
904 _mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
906 struct gl_renderbuffer *newRb;
907 GET_CURRENT_CONTEXT(ctx);
909 ASSERT_OUTSIDE_BEGIN_END(ctx);
911 if (target != GL_RENDERBUFFER_EXT) {
912 _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
916 /* No need to flush here since the render buffer binding has no
917 * effect on rendering state.
921 newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
922 if (newRb == &DummyRenderbuffer) {
923 /* ID was reserved, but no real renderbuffer object made yet */
926 else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
927 /* All RB IDs must be Gen'd */
928 _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
933 /* create new renderbuffer object */
934 newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
936 _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
939 ASSERT(newRb->AllocStorage);
940 _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
941 newRb->RefCount = 1; /* referenced by hash table */
948 ASSERT(newRb != &DummyRenderbuffer);
950 _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
955 * If the given renderbuffer is anywhere attached to the framebuffer, detach
957 * This is used when a renderbuffer object is deleted.
958 * The spec calls for unbinding.
961 detach_renderbuffer(struct gl_context *ctx,
962 struct gl_framebuffer *fb,
963 struct gl_renderbuffer *rb)
966 for (i = 0; i < BUFFER_COUNT; i++) {
967 if (fb->Attachment[i].Renderbuffer == rb) {
968 _mesa_remove_attachment(ctx, &fb->Attachment[i]);
971 invalidate_framebuffer(fb);
976 _mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
979 GET_CURRENT_CONTEXT(ctx);
981 ASSERT_OUTSIDE_BEGIN_END(ctx);
982 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
984 for (i = 0; i < n; i++) {
985 if (renderbuffers[i] > 0) {
986 struct gl_renderbuffer *rb;
987 rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
989 /* check if deleting currently bound renderbuffer object */
990 if (rb == ctx->CurrentRenderbuffer) {
992 ASSERT(rb->RefCount >= 2);
993 _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
996 if (_mesa_is_user_fbo(ctx->DrawBuffer)) {
997 detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
999 if (_mesa_is_user_fbo(ctx->ReadBuffer)
1000 && ctx->ReadBuffer != ctx->DrawBuffer) {
1001 detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
1004 /* Remove from hash table immediately, to free the ID.
1005 * But the object will not be freed until it's no longer
1006 * referenced anywhere else.
1008 _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
1010 if (rb != &DummyRenderbuffer) {
1011 /* no longer referenced by hash table */
1012 _mesa_reference_renderbuffer(&rb, NULL);
1021 _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
1023 GET_CURRENT_CONTEXT(ctx);
1027 ASSERT_OUTSIDE_BEGIN_END(ctx);
1030 _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
1037 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
1039 for (i = 0; i < n; i++) {
1040 GLuint name = first + i;
1041 renderbuffers[i] = name;
1042 /* insert dummy placeholder into hash table */
1043 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1044 _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
1045 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1051 * Given an internal format token for a render buffer, return the
1052 * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
1053 * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
1054 * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
1056 * This is similar to _mesa_base_tex_format() but the set of valid
1057 * internal formats is different.
1059 * Note that even if a format is determined to be legal here, validation
1060 * of the FBO may fail if the format is not supported by the driver/GPU.
1062 * \param internalFormat as passed to glRenderbufferStorage()
1063 * \return the base internal format, or 0 if internalFormat is illegal
1066 _mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
1069 * Notes: some formats such as alpha, luminance, etc. were added
1070 * with GL_ARB_framebuffer_object.
1072 switch (internalFormat) {
1078 return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1082 case GL_LUMINANCE12:
1083 case GL_LUMINANCE16:
1084 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1085 case GL_LUMINANCE_ALPHA:
1086 case GL_LUMINANCE4_ALPHA4:
1087 case GL_LUMINANCE6_ALPHA2:
1088 case GL_LUMINANCE8_ALPHA8:
1089 case GL_LUMINANCE12_ALPHA4:
1090 case GL_LUMINANCE12_ALPHA12:
1091 case GL_LUMINANCE16_ALPHA16:
1092 return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1096 case GL_INTENSITY12:
1097 case GL_INTENSITY16:
1098 return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1117 case GL_SRGB8_ALPHA8_EXT:
1119 case GL_STENCIL_INDEX:
1120 case GL_STENCIL_INDEX1_EXT:
1121 case GL_STENCIL_INDEX4_EXT:
1122 case GL_STENCIL_INDEX8_EXT:
1123 case GL_STENCIL_INDEX16_EXT:
1124 return GL_STENCIL_INDEX;
1125 case GL_DEPTH_COMPONENT:
1126 case GL_DEPTH_COMPONENT16:
1127 case GL_DEPTH_COMPONENT24:
1128 case GL_DEPTH_COMPONENT32:
1129 return GL_DEPTH_COMPONENT;
1130 case GL_DEPTH_STENCIL_EXT:
1131 case GL_DEPTH24_STENCIL8_EXT:
1132 if (ctx->Extensions.EXT_packed_depth_stencil)
1133 return GL_DEPTH_STENCIL_EXT;
1136 case GL_DEPTH_COMPONENT32F:
1137 if (ctx->Extensions.ARB_depth_buffer_float)
1138 return GL_DEPTH_COMPONENT;
1141 case GL_DEPTH32F_STENCIL8:
1142 if (ctx->Extensions.ARB_depth_buffer_float)
1143 return GL_DEPTH_STENCIL;
1149 return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
1153 return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
1154 /* signed normalized texture formats */
1158 return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0;
1162 return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0;
1165 case GL_RGB16_SNORM:
1166 return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0;
1168 case GL_RGBA8_SNORM:
1169 case GL_RGBA16_SNORM:
1170 return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0;
1171 case GL_ALPHA_SNORM:
1172 case GL_ALPHA8_SNORM:
1173 case GL_ALPHA16_SNORM:
1174 return ctx->Extensions.EXT_texture_snorm &&
1175 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1176 case GL_LUMINANCE_SNORM:
1177 case GL_LUMINANCE8_SNORM:
1178 case GL_LUMINANCE16_SNORM:
1179 return ctx->Extensions.EXT_texture_snorm &&
1180 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1181 case GL_LUMINANCE_ALPHA_SNORM:
1182 case GL_LUMINANCE8_ALPHA8_SNORM:
1183 case GL_LUMINANCE16_ALPHA16_SNORM:
1184 return ctx->Extensions.EXT_texture_snorm &&
1185 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1186 case GL_INTENSITY_SNORM:
1187 case GL_INTENSITY8_SNORM:
1188 case GL_INTENSITY16_SNORM:
1189 return ctx->Extensions.EXT_texture_snorm &&
1190 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1193 return ctx->Extensions.ARB_texture_rg &&
1194 ctx->Extensions.ARB_texture_float ? GL_RED : 0;
1197 return ctx->Extensions.ARB_texture_rg &&
1198 ctx->Extensions.ARB_texture_float ? GL_RG : 0;
1201 return ctx->Extensions.ARB_texture_float ? GL_RGB : 0;
1204 return ctx->Extensions.ARB_texture_float ? GL_RGBA : 0;
1205 case GL_ALPHA16F_ARB:
1206 case GL_ALPHA32F_ARB:
1207 return ctx->Extensions.ARB_texture_float &&
1208 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1209 case GL_LUMINANCE16F_ARB:
1210 case GL_LUMINANCE32F_ARB:
1211 return ctx->Extensions.ARB_texture_float &&
1212 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1213 case GL_LUMINANCE_ALPHA16F_ARB:
1214 case GL_LUMINANCE_ALPHA32F_ARB:
1215 return ctx->Extensions.ARB_texture_float &&
1216 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1217 case GL_INTENSITY16F_ARB:
1218 case GL_INTENSITY32F_ARB:
1219 return ctx->Extensions.ARB_texture_float &&
1220 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1222 return ctx->Extensions.EXT_texture_shared_exponent ? GL_RGB : 0;
1223 case GL_R11F_G11F_B10F:
1224 return ctx->Extensions.EXT_packed_float ? GL_RGB : 0;
1226 case GL_RGBA8UI_EXT:
1227 case GL_RGBA16UI_EXT:
1228 case GL_RGBA32UI_EXT:
1230 case GL_RGBA16I_EXT:
1231 case GL_RGBA32I_EXT:
1232 return ctx->Version >= 30 ||
1233 ctx->Extensions.EXT_texture_integer ? GL_RGBA : 0;
1236 case GL_RGB16UI_EXT:
1237 case GL_RGB32UI_EXT:
1241 return ctx->Version >= 30 ||
1242 ctx->Extensions.EXT_texture_integer ? GL_RGB : 0;
1250 return ctx->Version >= 30 ||
1251 (ctx->Extensions.ARB_texture_rg &&
1252 ctx->Extensions.EXT_texture_integer) ? GL_RED : 0;
1260 return ctx->Version >= 30 ||
1261 (ctx->Extensions.ARB_texture_rg &&
1262 ctx->Extensions.EXT_texture_integer) ? GL_RG : 0;
1264 case GL_INTENSITY8I_EXT:
1265 case GL_INTENSITY8UI_EXT:
1266 case GL_INTENSITY16I_EXT:
1267 case GL_INTENSITY16UI_EXT:
1268 case GL_INTENSITY32I_EXT:
1269 case GL_INTENSITY32UI_EXT:
1270 return ctx->Extensions.EXT_texture_integer &&
1271 ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
1273 case GL_LUMINANCE8I_EXT:
1274 case GL_LUMINANCE8UI_EXT:
1275 case GL_LUMINANCE16I_EXT:
1276 case GL_LUMINANCE16UI_EXT:
1277 case GL_LUMINANCE32I_EXT:
1278 case GL_LUMINANCE32UI_EXT:
1279 return ctx->Extensions.EXT_texture_integer &&
1280 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
1282 case GL_LUMINANCE_ALPHA8I_EXT:
1283 case GL_LUMINANCE_ALPHA8UI_EXT:
1284 case GL_LUMINANCE_ALPHA16I_EXT:
1285 case GL_LUMINANCE_ALPHA16UI_EXT:
1286 case GL_LUMINANCE_ALPHA32I_EXT:
1287 case GL_LUMINANCE_ALPHA32UI_EXT:
1288 return ctx->Extensions.EXT_texture_integer &&
1289 ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
1291 case GL_ALPHA8I_EXT:
1292 case GL_ALPHA8UI_EXT:
1293 case GL_ALPHA16I_EXT:
1294 case GL_ALPHA16UI_EXT:
1295 case GL_ALPHA32I_EXT:
1296 case GL_ALPHA32UI_EXT:
1297 return ctx->Extensions.EXT_texture_integer &&
1298 ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
1301 return ctx->Extensions.ARB_texture_rgb10_a2ui ? GL_RGBA : 0;
1304 return ctx->Extensions.ARB_ES2_compatibility ? GL_RGB : 0;
1312 * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk().
1315 invalidate_rb(GLuint key, void *data, void *userData)
1317 struct gl_framebuffer *fb = (struct gl_framebuffer *) data;
1318 struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData;
1320 /* If this is a user-created FBO */
1321 if (_mesa_is_user_fbo(fb)) {
1323 for (i = 0; i < BUFFER_COUNT; i++) {
1324 struct gl_renderbuffer_attachment *att = fb->Attachment + i;
1325 if (att->Type == GL_RENDERBUFFER &&
1326 att->Renderbuffer == rb) {
1327 /* Mark fb status as indeterminate to force re-validation */
1336 /** sentinal value, see below */
1337 #define NO_SAMPLES 1000
1341 * Helper function used by _mesa_RenderbufferStorageEXT() and
1342 * _mesa_RenderbufferStorageMultisample().
1343 * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
1346 renderbuffer_storage(GLenum target, GLenum internalFormat,
1347 GLsizei width, GLsizei height, GLsizei samples)
1349 const char *func = samples == NO_SAMPLES ?
1350 "glRenderbufferStorage" : "RenderbufferStorageMultisample";
1351 struct gl_renderbuffer *rb;
1353 GET_CURRENT_CONTEXT(ctx);
1355 ASSERT_OUTSIDE_BEGIN_END(ctx);
1357 if (target != GL_RENDERBUFFER_EXT) {
1358 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
1362 baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
1363 if (baseFormat == 0) {
1364 _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
1368 if (width < 0 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1369 _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
1373 if (height < 0 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
1374 _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
1378 if (samples == NO_SAMPLES) {
1379 /* NumSamples == 0 indicates non-multisampling */
1382 else if (samples > (GLsizei) ctx->Const.MaxSamples) {
1383 /* note: driver may choose to use more samples than what's requested */
1384 _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
1388 rb = ctx->CurrentRenderbuffer;
1390 _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
1394 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1396 if (rb->InternalFormat == internalFormat &&
1397 rb->Width == (GLuint) width &&
1398 rb->Height == (GLuint) height &&
1399 rb->NumSamples == samples) {
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 /* If rb->Format == MESA_FORMAT_NONE, the format is unsupported. */
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 (_mesa_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 (_mesa_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 framebuffer had any texture attachments */
1770 check_end_texture_render(ctx, oldDrawFb);
1772 /* check if newly bound framebuffer has any texture attachments */
1773 check_begin_texture_render(ctx, newDrawFb);
1775 _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
1778 if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
1779 ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
1785 _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
1788 GET_CURRENT_CONTEXT(ctx);
1790 ASSERT_OUTSIDE_BEGIN_END(ctx);
1791 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
1793 for (i = 0; i < n; i++) {
1794 if (framebuffers[i] > 0) {
1795 struct gl_framebuffer *fb;
1796 fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
1798 ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
1800 /* check if deleting currently bound framebuffer object */
1801 if (ctx->Extensions.EXT_framebuffer_blit) {
1802 /* separate draw/read binding points */
1803 if (fb == ctx->DrawBuffer) {
1805 ASSERT(fb->RefCount >= 2);
1806 _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
1808 if (fb == ctx->ReadBuffer) {
1810 ASSERT(fb->RefCount >= 2);
1811 _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
1815 /* only one binding point for read/draw buffers */
1816 if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
1818 ASSERT(fb->RefCount >= 2);
1819 _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
1823 /* remove from hash table immediately, to free the ID */
1824 _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
1826 if (fb != &DummyFramebuffer) {
1827 /* But the object will not be freed until it's no longer
1828 * bound in any context.
1830 _mesa_reference_framebuffer(&fb, NULL);
1839 _mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
1841 GET_CURRENT_CONTEXT(ctx);
1845 ASSERT_OUTSIDE_BEGIN_END(ctx);
1848 _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
1855 first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
1857 for (i = 0; i < n; i++) {
1858 GLuint name = first + i;
1859 framebuffers[i] = name;
1860 /* insert dummy placeholder into hash table */
1861 _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
1862 _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
1863 _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
1870 _mesa_CheckFramebufferStatusEXT(GLenum target)
1872 struct gl_framebuffer *buffer;
1873 GET_CURRENT_CONTEXT(ctx);
1875 ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
1877 buffer = get_framebuffer_target(ctx, target);
1879 _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
1883 if (_mesa_is_winsys_fbo(buffer)) {
1884 /* The window system / default framebuffer is always complete */
1885 return GL_FRAMEBUFFER_COMPLETE_EXT;
1888 /* No need to flush here */
1890 if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
1891 _mesa_test_framebuffer_completeness(ctx, buffer);
1894 return buffer->_Status;
1899 * Replicate the src attachment point. Used by framebuffer_texture() when
1900 * the same texture is attached at GL_DEPTH_ATTACHMENT and
1901 * GL_STENCIL_ATTACHMENT.
1904 reuse_framebuffer_texture_attachment(struct gl_framebuffer *fb,
1905 gl_buffer_index dst,
1906 gl_buffer_index src)
1908 struct gl_renderbuffer_attachment *dst_att = &fb->Attachment[dst];
1909 struct gl_renderbuffer_attachment *src_att = &fb->Attachment[src];
1911 assert(src_att->Texture != NULL);
1912 assert(src_att->Renderbuffer != NULL);
1914 _mesa_reference_texobj(&dst_att->Texture, src_att->Texture);
1915 _mesa_reference_renderbuffer(&dst_att->Renderbuffer, src_att->Renderbuffer);
1916 dst_att->Type = src_att->Type;
1917 dst_att->Complete = src_att->Complete;
1918 dst_att->TextureLevel = src_att->TextureLevel;
1919 dst_att->Zoffset = src_att->Zoffset;
1924 * Common code called by glFramebufferTexture1D/2D/3DEXT() and
1925 * glFramebufferTextureLayerEXT().
1926 * Note: glFramebufferTextureLayerEXT() has no textarget parameter so we'll
1927 * get textarget=0 in that case.
1930 framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
1931 GLenum attachment, GLenum textarget, GLuint texture,
1932 GLint level, GLint zoffset)
1934 struct gl_renderbuffer_attachment *att;
1935 struct gl_texture_object *texObj = NULL;
1936 struct gl_framebuffer *fb;
1937 GLenum maxLevelsTarget;
1939 ASSERT_OUTSIDE_BEGIN_END(ctx);
1941 fb = get_framebuffer_target(ctx, target);
1943 _mesa_error(ctx, GL_INVALID_ENUM,
1944 "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
1948 /* check framebuffer binding */
1949 if (_mesa_is_winsys_fbo(fb)) {
1950 _mesa_error(ctx, GL_INVALID_OPERATION,
1951 "glFramebufferTexture%sEXT", caller);
1955 /* The textarget, level, and zoffset parameters are only validated if
1956 * texture is non-zero.
1959 GLboolean err = GL_TRUE;
1961 texObj = _mesa_lookup_texture(ctx, texture);
1962 if (texObj != NULL) {
1963 if (textarget == 0) {
1964 /* If textarget == 0 it means we're being called by
1965 * glFramebufferTextureLayer() and textarget is not used.
1966 * The only legal texture types for that function are 3D and
1967 * 1D/2D arrays textures.
1969 err = (texObj->Target != GL_TEXTURE_3D) &&
1970 (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
1971 (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
1974 /* Make sure textarget is consistent with the texture's type */
1975 err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
1976 ? !_mesa_is_cube_face(textarget)
1977 : (texObj->Target != textarget);
1981 /* can't render to a non-existant texture */
1982 _mesa_error(ctx, GL_INVALID_OPERATION,
1983 "glFramebufferTexture%sEXT(non existant texture)",
1989 _mesa_error(ctx, GL_INVALID_OPERATION,
1990 "glFramebufferTexture%sEXT(texture target mismatch)",
1995 if (texObj->Target == GL_TEXTURE_3D) {
1996 const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
1997 if (zoffset < 0 || zoffset >= maxSize) {
1998 _mesa_error(ctx, GL_INVALID_VALUE,
1999 "glFramebufferTexture%sEXT(zoffset)", caller);
2003 else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
2004 (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
2005 if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
2006 _mesa_error(ctx, GL_INVALID_VALUE,
2007 "glFramebufferTexture%sEXT(layer)", caller);
2012 maxLevelsTarget = textarget ? textarget : texObj->Target;
2014 (level >= _mesa_max_texture_levels(ctx, maxLevelsTarget))) {
2015 _mesa_error(ctx, GL_INVALID_VALUE,
2016 "glFramebufferTexture%sEXT(level)", caller);
2021 att = _mesa_get_attachment(ctx, fb, attachment);
2023 _mesa_error(ctx, GL_INVALID_ENUM,
2024 "glFramebufferTexture%sEXT(attachment)", caller);
2028 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2030 _glthread_LOCK_MUTEX(fb->Mutex);
2032 if (attachment == GL_DEPTH_ATTACHMENT &&
2033 texObj == fb->Attachment[BUFFER_STENCIL].Texture &&
2034 level == fb->Attachment[BUFFER_STENCIL].TextureLevel &&
2035 _mesa_tex_target_to_face(textarget) ==
2036 fb->Attachment[BUFFER_STENCIL].CubeMapFace &&
2037 zoffset == fb->Attachment[BUFFER_STENCIL].Zoffset) {
2038 /* The texture object is already attached to the stencil attachment
2039 * point. Don't create a new renderbuffer; just reuse the stencil
2040 * attachment's. This is required to prevent a GL error in
2041 * glGetFramebufferAttachmentParameteriv(GL_DEPTH_STENCIL).
2043 reuse_framebuffer_texture_attachment(fb, BUFFER_DEPTH,
2045 } else if (attachment == GL_STENCIL_ATTACHMENT &&
2046 texObj == fb->Attachment[BUFFER_DEPTH].Texture &&
2047 level == fb->Attachment[BUFFER_DEPTH].TextureLevel &&
2048 _mesa_tex_target_to_face(textarget) ==
2049 fb->Attachment[BUFFER_DEPTH].CubeMapFace &&
2050 zoffset == fb->Attachment[BUFFER_DEPTH].Zoffset) {
2051 /* As above, but with depth and stencil transposed. */
2052 reuse_framebuffer_texture_attachment(fb, BUFFER_STENCIL,
2055 _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
2057 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2058 /* Above we created a new renderbuffer and attached it to the
2059 * depth attachment point. Now attach it to the stencil attachment
2062 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2063 reuse_framebuffer_texture_attachment(fb,BUFFER_STENCIL,
2068 /* Set the render-to-texture flag. We'll check this flag in
2069 * glTexImage() and friends to determine if we need to revalidate
2070 * any FBOs that might be rendering into this texture.
2071 * This flag never gets cleared since it's non-trivial to determine
2072 * when all FBOs might be done rendering to this texture. That's OK
2073 * though since it's uncommon to render to a texture then repeatedly
2074 * call glTexImage() to change images in the texture.
2076 texObj->_RenderToTexture = GL_TRUE;
2079 _mesa_remove_attachment(ctx, att);
2080 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2081 assert(att == &fb->Attachment[BUFFER_DEPTH]);
2082 _mesa_remove_attachment(ctx, &fb->Attachment[BUFFER_STENCIL]);
2086 invalidate_framebuffer(fb);
2088 _glthread_UNLOCK_MUTEX(fb->Mutex);
2094 _mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
2095 GLenum textarget, GLuint texture, GLint level)
2097 GET_CURRENT_CONTEXT(ctx);
2102 switch (textarget) {
2106 case GL_TEXTURE_1D_ARRAY:
2107 error = !ctx->Extensions.EXT_texture_array;
2114 _mesa_error(ctx, GL_INVALID_OPERATION,
2115 "glFramebufferTexture1DEXT(textarget=%s)",
2116 _mesa_lookup_enum_by_nr(textarget));
2121 framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
2127 _mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
2128 GLenum textarget, GLuint texture, GLint level)
2130 GET_CURRENT_CONTEXT(ctx);
2135 switch (textarget) {
2139 case GL_TEXTURE_RECTANGLE:
2140 error = _mesa_is_gles(ctx)
2141 || !ctx->Extensions.NV_texture_rectangle;
2143 case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
2144 case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
2145 case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
2146 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
2147 case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
2148 case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
2149 error = !ctx->Extensions.ARB_texture_cube_map;
2151 case GL_TEXTURE_2D_ARRAY:
2152 error = (_mesa_is_gles(ctx) && ctx->Version < 30)
2153 || !ctx->Extensions.EXT_texture_array;
2160 _mesa_error(ctx, GL_INVALID_OPERATION,
2161 "glFramebufferTexture2DEXT(textarget=%s)",
2162 _mesa_lookup_enum_by_nr(textarget));
2167 framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
2173 _mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
2174 GLenum textarget, GLuint texture,
2175 GLint level, GLint zoffset)
2177 GET_CURRENT_CONTEXT(ctx);
2179 if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
2180 _mesa_error(ctx, GL_INVALID_OPERATION,
2181 "glFramebufferTexture3DEXT(textarget)");
2185 framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
2191 _mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
2192 GLuint texture, GLint level, GLint layer)
2194 GET_CURRENT_CONTEXT(ctx);
2196 framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
2202 _mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
2203 GLenum renderbufferTarget,
2204 GLuint renderbuffer)
2206 struct gl_renderbuffer_attachment *att;
2207 struct gl_framebuffer *fb;
2208 struct gl_renderbuffer *rb;
2209 GET_CURRENT_CONTEXT(ctx);
2211 ASSERT_OUTSIDE_BEGIN_END(ctx);
2213 fb = get_framebuffer_target(ctx, target);
2215 _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)");
2219 if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
2220 _mesa_error(ctx, GL_INVALID_ENUM,
2221 "glFramebufferRenderbufferEXT(renderbufferTarget)");
2225 if (_mesa_is_winsys_fbo(fb)) {
2226 /* Can't attach new renderbuffers to a window system framebuffer */
2227 _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
2231 att = _mesa_get_attachment(ctx, fb, attachment);
2233 _mesa_error(ctx, GL_INVALID_ENUM,
2234 "glFramebufferRenderbufferEXT(invalid attachment %s)",
2235 _mesa_lookup_enum_by_nr(attachment));
2240 rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
2242 _mesa_error(ctx, GL_INVALID_OPERATION,
2243 "glFramebufferRenderbufferEXT(non-existant"
2244 " renderbuffer %u)", renderbuffer);
2247 else if (rb == &DummyRenderbuffer) {
2248 /* This is what NVIDIA does */
2249 _mesa_error(ctx, GL_INVALID_VALUE,
2250 "glFramebufferRenderbufferEXT(renderbuffer %u)",
2256 /* remove renderbuffer attachment */
2260 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
2261 rb && rb->Format != MESA_FORMAT_NONE) {
2262 /* make sure the renderbuffer is a depth/stencil format */
2263 const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
2264 if (baseFormat != GL_DEPTH_STENCIL) {
2265 _mesa_error(ctx, GL_INVALID_OPERATION,
2266 "glFramebufferRenderbufferEXT(renderbuffer"
2267 " is not DEPTH_STENCIL format)");
2273 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2275 assert(ctx->Driver.FramebufferRenderbuffer);
2276 ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
2278 /* Some subsequent GL commands may depend on the framebuffer's visual
2279 * after the binding is updated. Update visual info now.
2281 _mesa_update_framebuffer_visual(ctx, fb);
2286 _mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
2287 GLenum pname, GLint *params)
2289 const struct gl_renderbuffer_attachment *att;
2290 struct gl_framebuffer *buffer;
2292 GET_CURRENT_CONTEXT(ctx);
2294 ASSERT_OUTSIDE_BEGIN_END(ctx);
2296 /* The error differs in GL and GLES. */
2297 err = _mesa_is_desktop_gl(ctx) ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
2299 buffer = get_framebuffer_target(ctx, target);
2301 _mesa_error(ctx, GL_INVALID_ENUM,
2302 "glGetFramebufferAttachmentParameterivEXT(target)");
2306 if (_mesa_is_winsys_fbo(buffer)) {
2307 /* Page 126 (page 136 of the PDF) of the OpenGL ES 2.0.25 spec
2310 * "If the framebuffer currently bound to target is zero, then
2311 * INVALID_OPERATION is generated."
2313 * The EXT_framebuffer_object spec has the same wording, and the
2314 * OES_framebuffer_object spec refers to the EXT_framebuffer_object
2317 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_framebuffer_object) {
2318 _mesa_error(ctx, GL_INVALID_OPERATION,
2319 "glGetFramebufferAttachmentParameteriv(bound FBO = 0)");
2322 /* the default / window-system FBO */
2323 att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
2326 /* user-created framebuffer FBO */
2327 att = _mesa_get_attachment(ctx, buffer, attachment);
2331 _mesa_error(ctx, GL_INVALID_ENUM,
2332 "glGetFramebufferAttachmentParameterivEXT(attachment)");
2336 if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
2337 /* the depth and stencil attachments must point to the same buffer */
2338 const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
2339 depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
2340 stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
2341 if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
2342 _mesa_error(ctx, GL_INVALID_OPERATION,
2343 "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
2344 " attachments differ)");
2349 /* No need to flush here */
2352 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
2353 *params = _mesa_is_winsys_fbo(buffer)
2354 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
2356 case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
2357 if (att->Type == GL_RENDERBUFFER_EXT) {
2358 *params = att->Renderbuffer->Name;
2360 else if (att->Type == GL_TEXTURE) {
2361 *params = att->Texture->Name;
2364 assert(att->Type == GL_NONE);
2365 if (_mesa_is_desktop_gl(ctx)) {
2368 _mesa_error(ctx, GL_INVALID_ENUM,
2369 "glGetFramebufferAttachmentParameterivEXT(pname)");
2373 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
2374 if (att->Type == GL_TEXTURE) {
2375 *params = att->TextureLevel;
2377 else if (att->Type == GL_NONE) {
2378 _mesa_error(ctx, err,
2379 "glGetFramebufferAttachmentParameterivEXT(pname)");
2382 _mesa_error(ctx, GL_INVALID_ENUM,
2383 "glGetFramebufferAttachmentParameterivEXT(pname)");
2386 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
2387 if (att->Type == GL_TEXTURE) {
2388 if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
2389 *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
2395 else if (att->Type == GL_NONE) {
2396 _mesa_error(ctx, err,
2397 "glGetFramebufferAttachmentParameterivEXT(pname)");
2400 _mesa_error(ctx, GL_INVALID_ENUM,
2401 "glGetFramebufferAttachmentParameterivEXT(pname)");
2404 case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
2405 if (att->Type == GL_TEXTURE) {
2406 if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
2407 *params = att->Zoffset;
2413 else if (att->Type == GL_NONE) {
2414 _mesa_error(ctx, err,
2415 "glGetFramebufferAttachmentParameterivEXT(pname)");
2418 _mesa_error(ctx, GL_INVALID_ENUM,
2419 "glGetFramebufferAttachmentParameterivEXT(pname)");
2422 case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
2423 if (!ctx->Extensions.ARB_framebuffer_object) {
2424 _mesa_error(ctx, GL_INVALID_ENUM,
2425 "glGetFramebufferAttachmentParameterivEXT(pname)");
2427 else if (att->Type == GL_NONE) {
2428 _mesa_error(ctx, err,
2429 "glGetFramebufferAttachmentParameterivEXT(pname)");
2432 if (ctx->Extensions.EXT_framebuffer_sRGB) {
2433 *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
2436 /* According to ARB_framebuffer_sRGB, we should return LINEAR
2437 * if the sRGB conversion is unsupported. */
2438 *params = GL_LINEAR;
2442 case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
2443 if (!ctx->Extensions.ARB_framebuffer_object) {
2444 _mesa_error(ctx, GL_INVALID_ENUM,
2445 "glGetFramebufferAttachmentParameterivEXT(pname)");
2448 else if (att->Type == GL_NONE) {
2449 _mesa_error(ctx, err,
2450 "glGetFramebufferAttachmentParameterivEXT(pname)");
2453 gl_format format = att->Renderbuffer->Format;
2454 if (format == MESA_FORMAT_S8) {
2458 else if (format == MESA_FORMAT_Z32_FLOAT_X24S8) {
2459 /* depends on the attachment parameter */
2460 if (attachment == GL_STENCIL_ATTACHMENT) {
2468 *params = _mesa_get_format_datatype(format);
2472 case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
2473 case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
2474 case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
2475 case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
2476 case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
2477 case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
2478 if (!ctx->Extensions.ARB_framebuffer_object) {
2479 _mesa_error(ctx, GL_INVALID_ENUM,
2480 "glGetFramebufferAttachmentParameterivEXT(pname)");
2482 else if (att->Type == GL_NONE) {
2483 _mesa_error(ctx, err,
2484 "glGetFramebufferAttachmentParameterivEXT(pname)");
2486 else if (att->Texture) {
2487 const struct gl_texture_image *texImage =
2488 _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
2491 *params = get_component_bits(pname, texImage->_BaseFormat,
2492 texImage->TexFormat);
2498 else if (att->Renderbuffer) {
2499 *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
2500 att->Renderbuffer->Format);
2503 _mesa_problem(ctx, "glGetFramebufferAttachmentParameterivEXT:"
2504 " invalid FBO attachment structure");
2508 _mesa_error(ctx, GL_INVALID_ENUM,
2509 "glGetFramebufferAttachmentParameterivEXT(pname)");
2516 _mesa_GenerateMipmapEXT(GLenum target)
2518 struct gl_texture_image *srcImage;
2519 struct gl_texture_object *texObj;
2522 GET_CURRENT_CONTEXT(ctx);
2524 ASSERT_OUTSIDE_BEGIN_END(ctx);
2525 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2533 case GL_TEXTURE_CUBE_MAP:
2534 error = !ctx->Extensions.ARB_texture_cube_map;
2536 case GL_TEXTURE_1D_ARRAY:
2537 case GL_TEXTURE_2D_ARRAY:
2538 error = !ctx->Extensions.EXT_texture_array;
2545 _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target=%s)",
2546 _mesa_lookup_enum_by_nr(target));
2550 texObj = _mesa_get_current_tex_object(ctx, target);
2552 if (texObj->BaseLevel >= texObj->MaxLevel) {
2557 if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
2558 !_mesa_cube_complete(texObj)) {
2559 _mesa_error(ctx, GL_INVALID_OPERATION,
2560 "glGenerateMipmap(incomplete cube map)");
2564 _mesa_lock_texture(ctx, texObj);
2566 srcImage = _mesa_select_tex_image(ctx, texObj, target, texObj->BaseLevel);
2568 _mesa_unlock_texture(ctx, texObj);
2569 _mesa_error(ctx, GL_INVALID_OPERATION,
2570 "glGenerateMipmap(zero size base image)");
2574 if (target == GL_TEXTURE_CUBE_MAP) {
2576 for (face = 0; face < 6; face++)
2577 ctx->Driver.GenerateMipmap(ctx,
2578 GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
2582 ctx->Driver.GenerateMipmap(ctx, target, texObj);
2584 _mesa_unlock_texture(ctx, texObj);
2588 #if FEATURE_EXT_framebuffer_blit
2590 static const struct gl_renderbuffer_attachment *
2591 find_attachment(const struct gl_framebuffer *fb,
2592 const struct gl_renderbuffer *rb)
2595 for (i = 0; i < Elements(fb->Attachment); i++) {
2596 if (fb->Attachment[i].Renderbuffer == rb)
2597 return &fb->Attachment[i];
2604 * Helper function for checking if the datatypes of color buffers are
2605 * compatible for glBlitFramebuffer. From the 3.1 spec, page 198:
2607 * "GL_INVALID_OPERATION is generated if mask contains GL_COLOR_BUFFER_BIT
2608 * and any of the following conditions hold:
2609 * - The read buffer contains fixed-point or floating-point values and any
2610 * draw buffer contains neither fixed-point nor floating-point values.
2611 * - The read buffer contains unsigned integer values and any draw buffer
2612 * does not contain unsigned integer values.
2613 * - The read buffer contains signed integer values and any draw buffer
2614 * does not contain signed integer values."
2617 compatible_color_datatypes(gl_format srcFormat, gl_format dstFormat)
2619 GLenum srcType = _mesa_get_format_datatype(srcFormat);
2620 GLenum dstType = _mesa_get_format_datatype(dstFormat);
2622 if (srcType != GL_INT && srcType != GL_UNSIGNED_INT) {
2623 assert(srcType == GL_UNSIGNED_NORMALIZED ||
2624 srcType == GL_SIGNED_NORMALIZED ||
2625 srcType == GL_FLOAT);
2626 /* Boil any of those types down to GL_FLOAT */
2630 if (dstType != GL_INT && dstType != GL_UNSIGNED_INT) {
2631 assert(dstType == GL_UNSIGNED_NORMALIZED ||
2632 dstType == GL_SIGNED_NORMALIZED ||
2633 dstType == GL_FLOAT);
2634 /* Boil any of those types down to GL_FLOAT */
2638 return srcType == dstType;
2643 * Return the equivalent non-generic internal format.
2644 * This is useful for comparing whether two internal formats are semantically
2648 get_nongeneric_internalformat(GLenum format)
2651 /* GL 1.1 formats. */
2661 case GL_LUMINANCE_ALPHA:
2662 return GL_LUMINANCE8_ALPHA8;
2666 return GL_LUMINANCE8;
2672 return GL_INTENSITY8;
2674 /* GL_ARB_texture_rg */
2681 /* GL_EXT_texture_sRGB */
2686 return GL_SRGB8_ALPHA8;
2689 return GL_SLUMINANCE8;
2691 case GL_SLUMINANCE_ALPHA:
2692 return GL_SLUMINANCE8_ALPHA8;
2694 /* GL_EXT_texture_snorm */
2696 return GL_RGBA8_SNORM;
2699 return GL_RGB8_SNORM;
2702 return GL_RG8_SNORM;
2707 case GL_LUMINANCE_ALPHA_SNORM:
2708 return GL_LUMINANCE8_ALPHA8_SNORM;
2710 case GL_LUMINANCE_SNORM:
2711 return GL_LUMINANCE8_SNORM;
2713 case GL_ALPHA_SNORM:
2714 return GL_ALPHA8_SNORM;
2716 case GL_INTENSITY_SNORM:
2717 return GL_INTENSITY8_SNORM;
2726 compatible_resolve_formats(const struct gl_renderbuffer *colorReadRb,
2727 const struct gl_renderbuffer *colorDrawRb)
2729 /* The simple case where we know the backing formats are the same.
2731 if (colorReadRb->Format == colorDrawRb->Format) {
2735 /* The Mesa formats are different, so we must check whether the internal
2736 * formats are compatible.
2738 * Under some circumstances, the user may request e.g. two GL_RGBA8
2739 * textures and get two entirely different Mesa formats like RGBA8888 and
2740 * ARGB8888. Drivers behaving like that should be able to cope with
2741 * non-matching formats by themselves, because it's not the user's fault.
2743 if (get_nongeneric_internalformat(colorReadRb->InternalFormat) ==
2744 get_nongeneric_internalformat(colorDrawRb->InternalFormat)) {
2753 * Blit rectangular region, optionally from one framebuffer to another.
2755 * Note, if the src buffer is multisampled and the dest is not, this is
2756 * when the samples must be resolved to a single color.
2759 _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
2760 GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
2761 GLbitfield mask, GLenum filter)
2763 const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
2764 GL_DEPTH_BUFFER_BIT |
2765 GL_STENCIL_BUFFER_BIT);
2766 const struct gl_framebuffer *readFb, *drawFb;
2767 const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
2768 GET_CURRENT_CONTEXT(ctx);
2770 ASSERT_OUTSIDE_BEGIN_END(ctx);
2771 FLUSH_VERTICES(ctx, _NEW_BUFFERS);
2773 if (MESA_VERBOSE & VERBOSE_API)
2775 "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n",
2776 srcX0, srcY0, srcX1, srcY1,
2777 dstX0, dstY0, dstX1, dstY1,
2778 mask, _mesa_lookup_enum_by_nr(filter));
2780 if (ctx->NewState) {
2781 _mesa_update_state(ctx);
2784 readFb = ctx->ReadBuffer;
2785 drawFb = ctx->DrawBuffer;
2787 if (!readFb || !drawFb) {
2788 /* This will normally never happen but someday we may want to
2789 * support MakeCurrent() with no drawables.
2794 /* check for complete framebuffers */
2795 if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
2796 readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
2797 _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
2798 "glBlitFramebufferEXT(incomplete draw/read buffers)");
2802 if (filter != GL_NEAREST && filter != GL_LINEAR) {
2803 _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
2807 if (mask & ~legalMaskBits) {
2808 _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
2812 /* depth/stencil must be blitted with nearest filtering */
2813 if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
2814 && filter != GL_NEAREST) {
2815 _mesa_error(ctx, GL_INVALID_OPERATION,
2816 "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)");
2820 /* get color read/draw renderbuffers */
2821 if (mask & GL_COLOR_BUFFER_BIT) {
2822 colorReadRb = readFb->_ColorReadBuffer;
2823 colorDrawRb = drawFb->_ColorDrawBuffers[0];
2825 /* From the EXT_framebuffer_object spec:
2827 * "If a buffer is specified in <mask> and does not exist in both
2828 * the read and draw framebuffers, the corresponding bit is silently
2831 if ((colorReadRb == NULL) || (colorDrawRb == NULL)) {
2832 colorReadRb = colorDrawRb = NULL;
2833 mask &= ~GL_COLOR_BUFFER_BIT;
2835 else if (!compatible_color_datatypes(colorReadRb->Format,
2836 colorDrawRb->Format)) {
2837 _mesa_error(ctx, GL_INVALID_OPERATION,
2838 "glBlitFramebufferEXT(color buffer datatypes mismatch)");
2843 colorReadRb = colorDrawRb = NULL;
2846 if (mask & GL_STENCIL_BUFFER_BIT) {
2847 struct gl_renderbuffer *readRb =
2848 readFb->Attachment[BUFFER_STENCIL].Renderbuffer;
2849 struct gl_renderbuffer *drawRb =
2850 drawFb->Attachment[BUFFER_STENCIL].Renderbuffer;
2852 /* From the EXT_framebuffer_object spec:
2854 * "If a buffer is specified in <mask> and does not exist in both
2855 * the read and draw framebuffers, the corresponding bit is silently
2858 if ((readRb == NULL) || (drawRb == NULL)) {
2859 mask &= ~GL_STENCIL_BUFFER_BIT;
2861 else if (_mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
2862 _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
2863 /* There is no need to check the stencil datatype here, because
2864 * there is only one: GL_UNSIGNED_INT.
2866 _mesa_error(ctx, GL_INVALID_OPERATION,
2867 "glBlitFramebufferEXT(stencil buffer size mismatch)");
2872 if (mask & GL_DEPTH_BUFFER_BIT) {
2873 struct gl_renderbuffer *readRb =
2874 readFb->Attachment[BUFFER_DEPTH].Renderbuffer;
2875 struct gl_renderbuffer *drawRb =
2876 drawFb->Attachment[BUFFER_DEPTH].Renderbuffer;
2878 /* From the EXT_framebuffer_object spec:
2880 * "If a buffer is specified in <mask> and does not exist in both
2881 * the read and draw framebuffers, the corresponding bit is silently
2884 if ((readRb == NULL) || (drawRb == NULL)) {
2885 mask &= ~GL_DEPTH_BUFFER_BIT;
2887 else if ((_mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
2888 _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) ||
2889 (_mesa_get_format_datatype(readRb->Format) !=
2890 _mesa_get_format_datatype(drawRb->Format))) {
2891 _mesa_error(ctx, GL_INVALID_OPERATION,
2892 "glBlitFramebufferEXT(depth buffer format mismatch)");
2897 if (readFb->Visual.samples > 0 &&
2898 drawFb->Visual.samples > 0 &&
2899 readFb->Visual.samples != drawFb->Visual.samples) {
2900 _mesa_error(ctx, GL_INVALID_OPERATION,
2901 "glBlitFramebufferEXT(mismatched samples)");
2905 /* extra checks for multisample copies... */
2906 if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
2907 /* src and dest region sizes must be the same */
2908 if (srcX1 - srcX0 != dstX1 - dstX0 ||
2909 srcY1 - srcY0 != dstY1 - dstY0) {
2910 _mesa_error(ctx, GL_INVALID_OPERATION,
2911 "glBlitFramebufferEXT(bad src/dst multisample region sizes)");
2915 /* color formats must match */
2918 !compatible_resolve_formats(colorReadRb, colorDrawRb)) {
2919 _mesa_error(ctx, GL_INVALID_OPERATION,
2920 "glBlitFramebufferEXT(bad src/dst multisample pixel formats)");
2925 if (filter == GL_LINEAR && (mask & GL_COLOR_BUFFER_BIT)) {
2926 /* 3.1 spec, page 199:
2927 * "Calling BlitFramebuffer will result in an INVALID_OPERATION error
2928 * if filter is LINEAR and read buffer contains integer data."
2930 GLenum type = _mesa_get_format_datatype(colorReadRb->Format);
2931 if (type == GL_INT || type == GL_UNSIGNED_INT) {
2932 _mesa_error(ctx, GL_INVALID_OPERATION,
2933 "glBlitFramebufferEXT(integer color type)");
2938 if (!ctx->Extensions.EXT_framebuffer_blit) {
2939 _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
2945 printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
2947 srcX0, srcY0, srcX1, srcY1,
2948 dstX0, dstY0, dstX1, dstY1,
2951 const struct gl_renderbuffer_attachment *att;
2953 att = find_attachment(readFb, colorReadRb);
2954 printf(" Src FBO %u RB %u (%dx%d) ",
2955 readFb->Name, colorReadRb->Name,
2956 colorReadRb->Width, colorReadRb->Height);
2957 if (att && att->Texture) {
2958 printf("Tex %u tgt 0x%x level %u face %u",
2960 att->Texture->Target,
2966 att = find_attachment(drawFb, colorDrawRb);
2967 printf(" Dst FBO %u RB %u (%dx%d) ",
2968 drawFb->Name, colorDrawRb->Name,
2969 colorDrawRb->Width, colorDrawRb->Height);
2970 if (att && att->Texture) {
2971 printf("Tex %u tgt 0x%x level %u face %u",
2973 att->Texture->Target,
2985 ASSERT(ctx->Driver.BlitFramebuffer);
2986 ctx->Driver.BlitFramebuffer(ctx,
2987 srcX0, srcY0, srcX1, srcY1,
2988 dstX0, dstY0, dstX1, dstY1,
2991 #endif /* FEATURE_EXT_framebuffer_blit */
2994 #if FEATURE_ARB_geometry_shader4
2996 _mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
2997 GLuint texture, GLint level)
2999 GET_CURRENT_CONTEXT(ctx);
3000 _mesa_error(ctx, GL_INVALID_OPERATION,
3001 "glFramebufferTextureARB "
3002 "not implemented!");
3007 _mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
3008 GLuint texture, GLint level, GLenum face)
3010 GET_CURRENT_CONTEXT(ctx);
3011 _mesa_error(ctx, GL_INVALID_OPERATION,
3012 "glFramebufferTextureFaceARB "
3013 "not implemented!");
3015 #endif /* FEATURE_ARB_geometry_shader4 */
3018 invalidate_framebuffer_storage(GLenum target, GLsizei numAttachments,
3019 const GLenum *attachments, GLint x, GLint y,
3020 GLsizei width, GLsizei height, const char *name)
3023 struct gl_framebuffer *fb;
3024 GET_CURRENT_CONTEXT(ctx);
3026 ASSERT_OUTSIDE_BEGIN_END(ctx);
3028 fb = get_framebuffer_target(ctx, target);
3030 _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", name);
3034 if (numAttachments < 0) {
3035 _mesa_error(ctx, GL_INVALID_VALUE,
3036 "%s(numAttachments < 0)", name);
3040 /* The GL_ARB_invalidate_subdata spec says:
3042 * "If an attachment is specified that does not exist in the
3043 * framebuffer bound to <target>, it is ignored."
3047 * "If <attachments> contains COLOR_ATTACHMENTm and m is greater than
3048 * or equal to the value of MAX_COLOR_ATTACHMENTS, then the error
3049 * INVALID_OPERATION is generated."
3051 * No mention is made of GL_AUXi being out of range. Therefore, we allow
3052 * any enum that can be allowed by the API (OpenGL ES 3.0 has a different
3053 * set of retrictions).
3055 for (i = 0; i < numAttachments; i++) {
3056 if (_mesa_is_winsys_fbo(fb)) {
3057 switch (attachments[i]) {
3063 /* Accumulation buffers and auxilary buffers were removed in
3064 * OpenGL 3.1, and they never existed in OpenGL ES.
3066 if (ctx->API != API_OPENGL)
3076 case GL_FRONT_RIGHT:
3077 if (!_mesa_is_desktop_gl(ctx))
3084 switch (attachments[i]) {
3085 case GL_DEPTH_ATTACHMENT:
3086 case GL_STENCIL_ATTACHMENT:
3088 case GL_COLOR_ATTACHMENT0:
3089 case GL_COLOR_ATTACHMENT1:
3090 case GL_COLOR_ATTACHMENT2:
3091 case GL_COLOR_ATTACHMENT3:
3092 case GL_COLOR_ATTACHMENT4:
3093 case GL_COLOR_ATTACHMENT5:
3094 case GL_COLOR_ATTACHMENT6:
3095 case GL_COLOR_ATTACHMENT7:
3096 case GL_COLOR_ATTACHMENT8:
3097 case GL_COLOR_ATTACHMENT9:
3098 case GL_COLOR_ATTACHMENT10:
3099 case GL_COLOR_ATTACHMENT11:
3100 case GL_COLOR_ATTACHMENT12:
3101 case GL_COLOR_ATTACHMENT13:
3102 case GL_COLOR_ATTACHMENT14:
3103 case GL_COLOR_ATTACHMENT15: {
3104 const int k = attachments[i] - GL_COLOR_ATTACHMENT0;
3105 if (k >= ctx->Const.MaxColorAttachments) {
3106 _mesa_error(ctx, GL_INVALID_OPERATION,
3107 "%s(attachment >= max. color attachments)", name);
3117 /* We don't actually do anything for this yet. Just return after
3118 * validating the parameters and generating the required errors.
3123 _mesa_error(ctx, GL_INVALID_ENUM, "%s(attachment)", name);
3128 _mesa_InvalidateSubFramebuffer(GLenum target, GLsizei numAttachments,
3129 const GLenum *attachments, GLint x, GLint y,
3130 GLsizei width, GLsizei height)
3132 invalidate_framebuffer_storage(target, numAttachments, attachments,
3133 x, y, width, height,
3134 "glInvalidateSubFramebuffer");
3138 _mesa_InvalidateFramebuffer(GLenum target, GLsizei numAttachments,
3139 const GLenum *attachments)
3141 /* The GL_ARB_invalidate_subdata spec says:
3145 * void InvalidateFramebuffer(enum target,
3146 * sizei numAttachments,
3147 * const enum *attachments);
3149 * is equivalent to the command InvalidateSubFramebuffer with <x>, <y>,
3150 * <width>, <height> equal to 0, 0, <MAX_VIEWPORT_DIMS[0]>,
3151 * <MAX_VIEWPORT_DIMS[1]> respectively."
3153 invalidate_framebuffer_storage(target, numAttachments, attachments,
3154 0, 0, MAX_VIEWPORT_WIDTH, MAX_VIEWPORT_HEIGHT,
3155 "glInvalidateFramebuffer");