From 704e01fc69ebf6302aa1876906805147248abdaa Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 6 Apr 2011 20:33:32 +0000 Subject: xserver libX11 libxcb mesa git update 6 Apr 2011 --- mesalib/src/mesa/main/fbobject.c | 4994 +++++++++++++++++++------------------- 1 file changed, 2496 insertions(+), 2498 deletions(-) (limited to 'mesalib/src/mesa/main/fbobject.c') diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c index 4eab3e119..76493f1a8 100644 --- a/mesalib/src/mesa/main/fbobject.c +++ b/mesalib/src/mesa/main/fbobject.c @@ -1,2498 +1,2496 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. - * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - - -/* - * GL_EXT/ARB_framebuffer_object extensions - * - * Authors: - * Brian Paul - */ - - -#include "buffers.h" -#include "context.h" -#include "enums.h" -#include "fbobject.h" -#include "formats.h" -#include "framebuffer.h" -#include "hash.h" -#include "macros.h" -#include "mfeatures.h" -#include "mtypes.h" -#include "renderbuffer.h" -#include "state.h" -#include "teximage.h" -#include "texobj.h" - - -/** Set this to 1 to help debug FBO incompleteness problems */ -#define DEBUG_FBO 0 - -/** Set this to 1 to debug/log glBlitFramebuffer() calls */ -#define DEBUG_BLIT 0 - - -/** - * Notes: - * - * None of the GL_EXT_framebuffer_object functions are compiled into - * display lists. - */ - - - -/* - * When glGenRender/FramebuffersEXT() is called we insert pointers to - * these placeholder objects into the hash table. - * Later, when the object ID is first bound, we replace the placeholder - * with the real frame/renderbuffer. - */ -static struct gl_framebuffer DummyFramebuffer; -static struct gl_renderbuffer DummyRenderbuffer; - -/* We bind this framebuffer when applications pass a NULL - * drawable/surface in make current. */ -static struct gl_framebuffer IncompleteFramebuffer; - - -#define IS_CUBE_FACE(TARGET) \ - ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \ - (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) - - -static void -delete_dummy_renderbuffer(struct gl_renderbuffer *rb) -{ - /* no op */ -} - -static void -delete_dummy_framebuffer(struct gl_framebuffer *fb) -{ - /* no op */ -} - - -void -_mesa_init_fbobjects(struct gl_context *ctx) -{ - _glthread_INIT_MUTEX(DummyFramebuffer.Mutex); - _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex); - _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex); - DummyFramebuffer.Delete = delete_dummy_framebuffer; - DummyRenderbuffer.Delete = delete_dummy_renderbuffer; - IncompleteFramebuffer.Delete = delete_dummy_framebuffer; -} - -struct gl_framebuffer * -_mesa_get_incomplete_framebuffer(void) -{ - return &IncompleteFramebuffer; -} - -/** - * Helper routine for getting a gl_renderbuffer. - */ -struct gl_renderbuffer * -_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id) -{ - struct gl_renderbuffer *rb; - - if (id == 0) - return NULL; - - rb = (struct gl_renderbuffer *) - _mesa_HashLookup(ctx->Shared->RenderBuffers, id); - return rb; -} - - -/** - * Helper routine for getting a gl_framebuffer. - */ -struct gl_framebuffer * -_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id) -{ - struct gl_framebuffer *fb; - - if (id == 0) - return NULL; - - fb = (struct gl_framebuffer *) - _mesa_HashLookup(ctx->Shared->FrameBuffers, id); - return fb; -} - - -/** - * Mark the given framebuffer as invalid. This will force the - * test for framebuffer completeness to be done before the framebuffer - * is used. - */ -static void -invalidate_framebuffer(struct gl_framebuffer *fb) -{ - fb->_Status = 0; /* "indeterminate" */ -} - - -/** - * Return the gl_framebuffer object which corresponds to the given - * framebuffer target, such as GL_DRAW_FRAMEBUFFER. - * Check support for GL_EXT_framebuffer_blit to determine if certain - * targets are legal. - * \return gl_framebuffer pointer or NULL if target is illegal - */ -static struct gl_framebuffer * -get_framebuffer_target(struct gl_context *ctx, GLenum target) -{ - switch (target) { - case GL_DRAW_FRAMEBUFFER: - return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL; - case GL_READ_FRAMEBUFFER: - return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL; - case GL_FRAMEBUFFER_EXT: - return ctx->DrawBuffer; - default: - return NULL; - } -} - - -/** - * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding - * gl_renderbuffer_attachment object. - * This function is only used for user-created FB objects, not the - * default / window-system FB object. - * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to - * the depth buffer attachment point. - */ -struct gl_renderbuffer_attachment * -_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, - GLenum attachment) -{ - GLuint i; - - assert(fb->Name > 0); - - switch (attachment) { - case GL_COLOR_ATTACHMENT0_EXT: - case GL_COLOR_ATTACHMENT1_EXT: - case GL_COLOR_ATTACHMENT2_EXT: - case GL_COLOR_ATTACHMENT3_EXT: - case GL_COLOR_ATTACHMENT4_EXT: - case GL_COLOR_ATTACHMENT5_EXT: - case GL_COLOR_ATTACHMENT6_EXT: - case GL_COLOR_ATTACHMENT7_EXT: - case GL_COLOR_ATTACHMENT8_EXT: - case GL_COLOR_ATTACHMENT9_EXT: - case GL_COLOR_ATTACHMENT10_EXT: - case GL_COLOR_ATTACHMENT11_EXT: - case GL_COLOR_ATTACHMENT12_EXT: - case GL_COLOR_ATTACHMENT13_EXT: - case GL_COLOR_ATTACHMENT14_EXT: - case GL_COLOR_ATTACHMENT15_EXT: - i = attachment - GL_COLOR_ATTACHMENT0_EXT; - if (i >= ctx->Const.MaxColorAttachments) { - return NULL; - } - return &fb->Attachment[BUFFER_COLOR0 + i]; - case GL_DEPTH_STENCIL_ATTACHMENT: - /* fall-through */ - case GL_DEPTH_BUFFER: - /* fall-through / new in GL 3.0 */ - case GL_DEPTH_ATTACHMENT_EXT: - return &fb->Attachment[BUFFER_DEPTH]; - case GL_STENCIL_BUFFER: - /* fall-through / new in GL 3.0 */ - case GL_STENCIL_ATTACHMENT_EXT: - return &fb->Attachment[BUFFER_STENCIL]; - default: - return NULL; - } -} - - -/** - * As above, but only used for getting attachments of the default / - * window-system framebuffer (not user-created framebuffer objects). - */ -static struct gl_renderbuffer_attachment * -_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, - GLenum attachment) -{ - assert(fb->Name == 0); - - switch (attachment) { - case GL_FRONT_LEFT: - return &fb->Attachment[BUFFER_FRONT_LEFT]; - case GL_FRONT_RIGHT: - return &fb->Attachment[BUFFER_FRONT_RIGHT]; - case GL_BACK_LEFT: - return &fb->Attachment[BUFFER_BACK_LEFT]; - case GL_BACK_RIGHT: - return &fb->Attachment[BUFFER_BACK_RIGHT]; - case GL_AUX0: - if (fb->Visual.numAuxBuffers == 1) { - return &fb->Attachment[BUFFER_AUX0]; - } - return NULL; - case GL_DEPTH_BUFFER: - /* fall-through / new in GL 3.0 */ - case GL_DEPTH_ATTACHMENT_EXT: - return &fb->Attachment[BUFFER_DEPTH]; - case GL_STENCIL_BUFFER: - /* fall-through / new in GL 3.0 */ - case GL_STENCIL_ATTACHMENT_EXT: - return &fb->Attachment[BUFFER_STENCIL]; - default: - return NULL; - } -} - - - -/** - * Remove any texture or renderbuffer attached to the given attachment - * point. Update reference counts, etc. - */ -void -_mesa_remove_attachment(struct gl_context *ctx, - struct gl_renderbuffer_attachment *att) -{ - if (att->Type == GL_TEXTURE) { - ASSERT(att->Texture); - if (ctx->Driver.FinishRenderTexture) { - /* tell driver that we're done rendering to this texture. */ - ctx->Driver.FinishRenderTexture(ctx, att); - } - _mesa_reference_texobj(&att->Texture, NULL); /* unbind */ - ASSERT(!att->Texture); - } - if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) { - ASSERT(!att->Texture); - _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */ - ASSERT(!att->Renderbuffer); - } - att->Type = GL_NONE; - att->Complete = GL_TRUE; -} - - -/** - * Bind a texture object to an attachment point. - * The previous binding, if any, will be removed first. - */ -void -_mesa_set_texture_attachment(struct gl_context *ctx, - struct gl_framebuffer *fb, - struct gl_renderbuffer_attachment *att, - struct gl_texture_object *texObj, - GLenum texTarget, GLuint level, GLuint zoffset) -{ - if (att->Texture == texObj) { - /* re-attaching same texture */ - ASSERT(att->Type == GL_TEXTURE); - if (ctx->Driver.FinishRenderTexture) - ctx->Driver.FinishRenderTexture(ctx, att); - } - else { - /* new attachment */ - if (ctx->Driver.FinishRenderTexture && att->Texture) - ctx->Driver.FinishRenderTexture(ctx, att); - _mesa_remove_attachment(ctx, att); - att->Type = GL_TEXTURE; - assert(!att->Texture); - _mesa_reference_texobj(&att->Texture, texObj); - } - - /* always update these fields */ - att->TextureLevel = level; - att->CubeMapFace = _mesa_tex_target_to_face(texTarget); - att->Zoffset = zoffset; - att->Complete = GL_FALSE; - - if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) { - ctx->Driver.RenderTexture(ctx, fb, att); - } - - invalidate_framebuffer(fb); -} - - -/** - * Bind a renderbuffer to an attachment point. - * The previous binding, if any, will be removed first. - */ -void -_mesa_set_renderbuffer_attachment(struct gl_context *ctx, - struct gl_renderbuffer_attachment *att, - struct gl_renderbuffer *rb) -{ - /* XXX check if re-doing same attachment, exit early */ - _mesa_remove_attachment(ctx, att); - att->Type = GL_RENDERBUFFER_EXT; - att->Texture = NULL; /* just to be safe */ - att->Complete = GL_FALSE; - _mesa_reference_renderbuffer(&att->Renderbuffer, rb); -} - - -/** - * Fallback for ctx->Driver.FramebufferRenderbuffer() - * Attach a renderbuffer object to a framebuffer object. - */ -void -_mesa_framebuffer_renderbuffer(struct gl_context *ctx, - struct gl_framebuffer *fb, - GLenum attachment, struct gl_renderbuffer *rb) -{ - struct gl_renderbuffer_attachment *att; - - _glthread_LOCK_MUTEX(fb->Mutex); - - att = _mesa_get_attachment(ctx, fb, attachment); - ASSERT(att); - if (rb) { - _mesa_set_renderbuffer_attachment(ctx, att, rb); - if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { - /* do stencil attachment here (depth already done above) */ - att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT); - assert(att); - _mesa_set_renderbuffer_attachment(ctx, att, rb); - } - rb->AttachedAnytime = GL_TRUE; - } - else { - _mesa_remove_attachment(ctx, att); - } - - invalidate_framebuffer(fb); - - _glthread_UNLOCK_MUTEX(fb->Mutex); -} - - -/** - * Fallback for ctx->Driver.ValidateFramebuffer() - * Check if the renderbuffer's formats are supported by the software - * renderer. - * Drivers should probably override this. - */ -void -_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) -{ - gl_buffer_index buf; - for (buf = 0; buf < BUFFER_COUNT; buf++) { - const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer; - if (rb) { - switch (rb->_BaseFormat) { - case GL_ALPHA: - case GL_LUMINANCE_ALPHA: - case GL_LUMINANCE: - case GL_INTENSITY: - case GL_RED: - case GL_RG: - fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; - return; - default: - /* render buffer format is supported by software rendering */ - ; - } - } - } -} - - -/** - * For debug only. - */ -static void -att_incomplete(const char *msg) -{ -#if DEBUG_FBO - _mesa_debug(NULL, "attachment incomplete: %s\n", msg); -#else - (void) msg; -#endif -} - - -/** - * For debug only. - */ -static void -fbo_incomplete(const char *msg, int index) -{ -#if DEBUG_FBO - _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); -#else - (void) msg; - (void) index; -#endif -} - - -/** - * Is the given base format a legal format for a color renderbuffer? - */ -GLboolean -_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat) -{ - switch (baseFormat) { - case GL_RGB: - case GL_RGBA: - return GL_TRUE; - case GL_LUMINANCE: - case GL_LUMINANCE_ALPHA: - case GL_INTENSITY: - case GL_ALPHA: - return ctx->Extensions.ARB_framebuffer_object; - case GL_RED: - case GL_RG: - return ctx->Extensions.ARB_texture_rg; - default: - return GL_FALSE; - } -} - - -/** - * Is the given base format a legal format for a depth/stencil renderbuffer? - */ -static GLboolean -is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat) -{ - switch (baseFormat) { - case GL_DEPTH_COMPONENT: - case GL_DEPTH_STENCIL_EXT: - return GL_TRUE; - default: - return GL_FALSE; - } -} - - -/** - * Test if an attachment point is complete and update its Complete field. - * \param format if GL_COLOR, this is a color attachment point, - * if GL_DEPTH, this is a depth component attachment point, - * if GL_STENCIL, this is a stencil component attachment point. - */ -static void -test_attachment_completeness(const struct gl_context *ctx, GLenum format, - struct gl_renderbuffer_attachment *att) -{ - assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL); - - /* assume complete */ - att->Complete = GL_TRUE; - - /* Look for reasons why the attachment might be incomplete */ - if (att->Type == GL_TEXTURE) { - const struct gl_texture_object *texObj = att->Texture; - struct gl_texture_image *texImage; - GLenum baseFormat; - - if (!texObj) { - att_incomplete("no texobj"); - att->Complete = GL_FALSE; - return; - } - - texImage = texObj->Image[att->CubeMapFace][att->TextureLevel]; - if (!texImage) { - att_incomplete("no teximage"); - att->Complete = GL_FALSE; - return; - } - if (texImage->Width < 1 || texImage->Height < 1) { - att_incomplete("teximage width/height=0"); - printf("texobj = %u\n", texObj->Name); - printf("level = %d\n", att->TextureLevel); - att->Complete = GL_FALSE; - return; - } - if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { - att_incomplete("bad z offset"); - att->Complete = GL_FALSE; - return; - } - - baseFormat = _mesa_get_format_base_format(texImage->TexFormat); - - if (format == GL_COLOR) { - if (!_mesa_is_legal_color_format(ctx, baseFormat)) { - att_incomplete("bad format"); - att->Complete = GL_FALSE; - return; - } - if (_mesa_is_format_compressed(texImage->TexFormat)) { - att_incomplete("compressed internalformat"); - att->Complete = GL_FALSE; - return; - } - } - else if (format == GL_DEPTH) { - if (baseFormat == GL_DEPTH_COMPONENT) { - /* OK */ - } - else if (ctx->Extensions.EXT_packed_depth_stencil && - ctx->Extensions.ARB_depth_texture && - baseFormat == GL_DEPTH_STENCIL_EXT) { - /* OK */ - } - else { - att->Complete = GL_FALSE; - att_incomplete("bad depth format"); - return; - } - } - else { - ASSERT(format == GL_STENCIL); - if (ctx->Extensions.EXT_packed_depth_stencil && - ctx->Extensions.ARB_depth_texture && - baseFormat == GL_DEPTH_STENCIL_EXT) { - /* OK */ - } - else { - /* no such thing as stencil-only textures */ - att_incomplete("illegal stencil texture"); - att->Complete = GL_FALSE; - return; - } - } - } - else if (att->Type == GL_RENDERBUFFER_EXT) { - const GLenum baseFormat = - _mesa_get_format_base_format(att->Renderbuffer->Format); - - ASSERT(att->Renderbuffer); - if (!att->Renderbuffer->InternalFormat || - att->Renderbuffer->Width < 1 || - att->Renderbuffer->Height < 1) { - att_incomplete("0x0 renderbuffer"); - att->Complete = GL_FALSE; - return; - } - if (format == GL_COLOR) { - if (!_mesa_is_legal_color_format(ctx, baseFormat)) { - att_incomplete("bad renderbuffer color format"); - att->Complete = GL_FALSE; - return; - } - } - else if (format == GL_DEPTH) { - if (baseFormat == GL_DEPTH_COMPONENT) { - /* OK */ - } - else if (ctx->Extensions.EXT_packed_depth_stencil && - baseFormat == GL_DEPTH_STENCIL_EXT) { - /* OK */ - } - else { - att_incomplete("bad renderbuffer depth format"); - att->Complete = GL_FALSE; - return; - } - } - else { - assert(format == GL_STENCIL); - if (baseFormat == GL_STENCIL_INDEX) { - /* OK */ - } - else if (ctx->Extensions.EXT_packed_depth_stencil && - baseFormat == GL_DEPTH_STENCIL_EXT) { - /* OK */ - } - else { - att->Complete = GL_FALSE; - att_incomplete("bad renderbuffer stencil format"); - return; - } - } - } - else { - ASSERT(att->Type == GL_NONE); - /* complete */ - return; - } -} - - -/** - * Test if the given framebuffer object is complete and update its - * Status field with the results. - * Calls the ctx->Driver.ValidateFramebuffer() function to allow the - * driver to make hardware-specific validation/completeness checks. - * Also update the framebuffer's Width and Height fields if the - * framebuffer is complete. - */ -void -_mesa_test_framebuffer_completeness(struct gl_context *ctx, - struct gl_framebuffer *fb) -{ - GLuint numImages; - GLenum intFormat = GL_NONE; /* color buffers' internal format */ - GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0; - GLint numSamples = -1; - GLint i; - GLuint j; - - assert(fb->Name != 0); - - numImages = 0; - fb->Width = 0; - fb->Height = 0; - - /* Start at -2 to more easily loop over all attachment points. - * -2: depth buffer - * -1: stencil buffer - * >=0: color buffer - */ - for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) { - struct gl_renderbuffer_attachment *att; - GLenum f; - gl_format attFormat; - - /* - * XXX for ARB_fbo, only check color buffers that are named by - * GL_READ_BUFFER and GL_DRAW_BUFFERi. - */ - - /* check for attachment completeness - */ - if (i == -2) { - att = &fb->Attachment[BUFFER_DEPTH]; - test_attachment_completeness(ctx, GL_DEPTH, att); - if (!att->Complete) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; - fbo_incomplete("depth attachment incomplete", -1); - return; - } - } - else if (i == -1) { - att = &fb->Attachment[BUFFER_STENCIL]; - test_attachment_completeness(ctx, GL_STENCIL, att); - if (!att->Complete) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; - fbo_incomplete("stencil attachment incomplete", -1); - return; - } - } - else { - att = &fb->Attachment[BUFFER_COLOR0 + i]; - test_attachment_completeness(ctx, GL_COLOR, att); - if (!att->Complete) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; - fbo_incomplete("color attachment incomplete", i); - return; - } - } - - /* get width, height, format of the renderbuffer/texture - */ - if (att->Type == GL_TEXTURE) { - const struct gl_texture_image *texImg - = att->Texture->Image[att->CubeMapFace][att->TextureLevel]; - minWidth = MIN2(minWidth, texImg->Width); - maxWidth = MAX2(maxWidth, texImg->Width); - minHeight = MIN2(minHeight, texImg->Height); - maxHeight = MAX2(maxHeight, texImg->Height); - f = texImg->_BaseFormat; - attFormat = texImg->TexFormat; - numImages++; - if (!_mesa_is_legal_color_format(ctx, f) && - !is_legal_depth_format(ctx, f)) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; - fbo_incomplete("texture attachment incomplete", -1); - return; - } - } - else if (att->Type == GL_RENDERBUFFER_EXT) { - minWidth = MIN2(minWidth, att->Renderbuffer->Width); - maxWidth = MAX2(minWidth, att->Renderbuffer->Width); - minHeight = MIN2(minHeight, att->Renderbuffer->Height); - maxHeight = MAX2(minHeight, att->Renderbuffer->Height); - f = att->Renderbuffer->InternalFormat; - attFormat = att->Renderbuffer->Format; - numImages++; - } - else { - assert(att->Type == GL_NONE); - continue; - } - - if (numSamples < 0) { - /* first buffer */ - numSamples = att->Renderbuffer->NumSamples; - } - - /* check if integer color */ - fb->_IntegerColor = _mesa_is_format_integer_color(attFormat); - - /* Error-check width, height, format, samples - */ - if (numImages == 1) { - /* save format, num samples */ - if (i >= 0) { - intFormat = f; - } - } - else { - if (!ctx->Extensions.ARB_framebuffer_object) { - /* check that width, height, format are same */ - if (minWidth != maxWidth || minHeight != maxHeight) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT; - fbo_incomplete("width or height mismatch", -1); - return; - } - /* check that all color buffer have same format */ - if (intFormat != GL_NONE && f != intFormat) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; - fbo_incomplete("format mismatch", -1); - return; - } - } - if (att->Renderbuffer && - att->Renderbuffer->NumSamples != numSamples) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; - fbo_incomplete("inconsistant number of samples", i); - return; - } - - } - } - -#if FEATURE_GL - if (ctx->API == API_OPENGL) { - /* Check that all DrawBuffers are present */ - for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) { - if (fb->ColorDrawBuffer[j] != GL_NONE) { - const struct gl_renderbuffer_attachment *att - = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]); - assert(att); - if (att->Type == GL_NONE) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT; - fbo_incomplete("missing drawbuffer", j); - return; - } - } - } - - /* Check that the ReadBuffer is present */ - if (fb->ColorReadBuffer != GL_NONE) { - const struct gl_renderbuffer_attachment *att - = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer); - assert(att); - if (att->Type == GL_NONE) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; - fbo_incomplete("missing readbuffer", -1); - return; - } - } - } -#else - (void) j; -#endif - - if (numImages == 0) { - fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; - fbo_incomplete("no attachments", -1); - return; - } - - /* Provisionally set status = COMPLETE ... */ - fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; - - /* ... but the driver may say the FB is incomplete. - * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED - * if anything. - */ - if (ctx->Driver.ValidateFramebuffer) { - ctx->Driver.ValidateFramebuffer(ctx, fb); - if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - fbo_incomplete("driver marked FBO as incomplete", -1); - } - } - - if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) { - /* - * Note that if ARB_framebuffer_object is supported and the attached - * renderbuffers/textures are different sizes, the framebuffer - * width/height will be set to the smallest width/height. - */ - fb->Width = minWidth; - fb->Height = minHeight; - - /* finally, update the visual info for the framebuffer */ - _mesa_update_framebuffer_visual(ctx, fb); - } -} - - -GLboolean GLAPIENTRY -_mesa_IsRenderbufferEXT(GLuint renderbuffer) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - if (renderbuffer) { - struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); - if (rb != NULL && rb != &DummyRenderbuffer) - return GL_TRUE; - } - return GL_FALSE; -} - - -void GLAPIENTRY -_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer) -{ - struct gl_renderbuffer *newRb; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (target != GL_RENDERBUFFER_EXT) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)"); - return; - } - - /* No need to flush here since the render buffer binding has no - * effect on rendering state. - */ - - if (renderbuffer) { - newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer); - if (newRb == &DummyRenderbuffer) { - /* ID was reserved, but no real renderbuffer object made yet */ - newRb = NULL; - } - else if (!newRb && ctx->Extensions.ARB_framebuffer_object) { - /* All RB IDs must be Gen'd */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)"); - return; - } - - if (!newRb) { - /* create new renderbuffer object */ - newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer); - if (!newRb) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT"); - return; - } - ASSERT(newRb->AllocStorage); - _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb); - newRb->RefCount = 1; /* referenced by hash table */ - } - } - else { - newRb = NULL; - } - - ASSERT(newRb != &DummyRenderbuffer); - - _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb); -} - - -/** - * If the given renderbuffer is anywhere attached to the framebuffer, detach - * the renderbuffer. - * This is used when a renderbuffer object is deleted. - * The spec calls for unbinding. - */ -static void -detach_renderbuffer(struct gl_context *ctx, - struct gl_framebuffer *fb, - struct gl_renderbuffer *rb) -{ - GLuint i; - for (i = 0; i < BUFFER_COUNT; i++) { - if (fb->Attachment[i].Renderbuffer == rb) { - _mesa_remove_attachment(ctx, &fb->Attachment[i]); - } - } - invalidate_framebuffer(fb); -} - - -void GLAPIENTRY -_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers) -{ - GLint i; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - for (i = 0; i < n; i++) { - if (renderbuffers[i] > 0) { - struct gl_renderbuffer *rb; - rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]); - if (rb) { - /* check if deleting currently bound renderbuffer object */ - if (rb == ctx->CurrentRenderbuffer) { - /* bind default */ - ASSERT(rb->RefCount >= 2); - _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0); - } - - if (ctx->DrawBuffer->Name) { - detach_renderbuffer(ctx, ctx->DrawBuffer, rb); - } - if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) { - detach_renderbuffer(ctx, ctx->ReadBuffer, rb); - } - - /* Remove from hash table immediately, to free the ID. - * But the object will not be freed until it's no longer - * referenced anywhere else. - */ - _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); - - if (rb != &DummyRenderbuffer) { - /* no longer referenced by hash table */ - _mesa_reference_renderbuffer(&rb, NULL); - } - } - } - } -} - - -void GLAPIENTRY -_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers) -{ - GET_CURRENT_CONTEXT(ctx); - GLuint first; - GLint i; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (n < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)"); - return; - } - - if (!renderbuffers) - return; - - first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n); - - for (i = 0; i < n; i++) { - GLuint name = first + i; - renderbuffers[i] = name; - /* insert dummy placeholder into hash table */ - _glthread_LOCK_MUTEX(ctx->Shared->Mutex); - _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer); - _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); - } -} - - -/** - * Given an internal format token for a render buffer, return the - * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, - * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE, - * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc). - * - * This is similar to _mesa_base_tex_format() but the set of valid - * internal formats is different. - * - * Note that even if a format is determined to be legal here, validation - * of the FBO may fail if the format is not supported by the driver/GPU. - * - * \param internalFormat as passed to glRenderbufferStorage() - * \return the base internal format, or 0 if internalFormat is illegal - */ -GLenum -_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat) -{ - /* - * Notes: some formats such as alpha, luminance, etc. were added - * with GL_ARB_framebuffer_object. - */ - switch (internalFormat) { - case GL_ALPHA: - case GL_ALPHA4: - case GL_ALPHA8: - case GL_ALPHA12: - case GL_ALPHA16: - return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; - case GL_LUMINANCE: - case GL_LUMINANCE4: - case GL_LUMINANCE8: - case GL_LUMINANCE12: - case GL_LUMINANCE16: - return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; - case GL_LUMINANCE_ALPHA: - case GL_LUMINANCE4_ALPHA4: - case GL_LUMINANCE6_ALPHA2: - case GL_LUMINANCE8_ALPHA8: - case GL_LUMINANCE12_ALPHA4: - case GL_LUMINANCE12_ALPHA12: - case GL_LUMINANCE16_ALPHA16: - return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; - case GL_INTENSITY: - case GL_INTENSITY4: - case GL_INTENSITY8: - case GL_INTENSITY12: - case GL_INTENSITY16: - return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; - case GL_RGB: - case GL_R3_G3_B2: - case GL_RGB4: - case GL_RGB5: - case GL_RGB8: - case GL_RGB10: - case GL_RGB12: - case GL_RGB16: - case GL_SRGB8_EXT: - return GL_RGB; - case GL_RGBA: - case GL_RGBA2: - case GL_RGBA4: - case GL_RGB5_A1: - case GL_RGBA8: - case GL_RGB10_A2: - case GL_RGBA12: - case GL_RGBA16: - case GL_SRGB8_ALPHA8_EXT: - return GL_RGBA; - case GL_STENCIL_INDEX: - case GL_STENCIL_INDEX1_EXT: - case GL_STENCIL_INDEX4_EXT: - case GL_STENCIL_INDEX8_EXT: - case GL_STENCIL_INDEX16_EXT: - return GL_STENCIL_INDEX; - case GL_DEPTH_COMPONENT: - case GL_DEPTH_COMPONENT16: - case GL_DEPTH_COMPONENT24: - case GL_DEPTH_COMPONENT32: - return GL_DEPTH_COMPONENT; - case GL_DEPTH_STENCIL_EXT: - case GL_DEPTH24_STENCIL8_EXT: - if (ctx->Extensions.EXT_packed_depth_stencil) - return GL_DEPTH_STENCIL_EXT; - else - return 0; - case GL_RED: - case GL_R8: - case GL_R16: - return ctx->Extensions.ARB_texture_rg ? GL_RED : 0; - case GL_RG: - case GL_RG8: - case GL_RG16: - return ctx->Extensions.ARB_texture_rg ? GL_RG : 0; - /* signed normalized texture formats */ - case GL_RED_SNORM: - case GL_R8_SNORM: - case GL_R16_SNORM: - return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0; - case GL_RG_SNORM: - case GL_RG8_SNORM: - case GL_RG16_SNORM: - return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0; - case GL_RGB_SNORM: - case GL_RGB8_SNORM: - case GL_RGB16_SNORM: - return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0; - case GL_RGBA_SNORM: - case GL_RGBA8_SNORM: - case GL_RGBA16_SNORM: - return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0; - case GL_ALPHA_SNORM: - case GL_ALPHA8_SNORM: - case GL_ALPHA16_SNORM: - return ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; - case GL_LUMINANCE_SNORM: - case GL_LUMINANCE8_SNORM: - case GL_LUMINANCE16_SNORM: - return ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; - case GL_LUMINANCE_ALPHA_SNORM: - case GL_LUMINANCE8_ALPHA8_SNORM: - case GL_LUMINANCE16_ALPHA16_SNORM: - return ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; - case GL_INTENSITY_SNORM: - case GL_INTENSITY8_SNORM: - case GL_INTENSITY16_SNORM: - return ctx->Extensions.EXT_texture_snorm && - ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; - /* XXX add floating point and integer formats eventually */ - default: - return 0; - } -} - - -/** - * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk(). - */ -static void -invalidate_rb(GLuint key, void *data, void *userData) -{ - struct gl_framebuffer *fb = (struct gl_framebuffer *) data; - struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData; - - /* If this is a user-created FBO */ - if (fb->Name) { - GLuint i; - for (i = 0; i < BUFFER_COUNT; i++) { - struct gl_renderbuffer_attachment *att = fb->Attachment + i; - if (att->Type == GL_RENDERBUFFER && - att->Renderbuffer == rb) { - /* Mark fb status as indeterminate to force re-validation */ - fb->_Status = 0; - return; - } - } - } -} - - -/** sentinal value, see below */ -#define NO_SAMPLES 1000 - - -/** - * Helper function used by _mesa_RenderbufferStorageEXT() and - * _mesa_RenderbufferStorageMultisample(). - * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT(). - */ -static void -renderbuffer_storage(GLenum target, GLenum internalFormat, - GLsizei width, GLsizei height, GLsizei samples) -{ - const char *func = samples == NO_SAMPLES ? - "glRenderbufferStorage" : "RenderbufferStorageMultisample"; - struct gl_renderbuffer *rb; - GLenum baseFormat; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (target != GL_RENDERBUFFER_EXT) { - _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func); - return; - } - - baseFormat = _mesa_base_fbo_format(ctx, internalFormat); - if (baseFormat == 0) { - _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func); - return; - } - - if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func); - return; - } - - if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) { - _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func); - return; - } - - if (samples == NO_SAMPLES) { - /* NumSamples == 0 indicates non-multisampling */ - samples = 0; - } - else if (samples > (GLsizei) ctx->Const.MaxSamples) { - /* note: driver may choose to use more samples than what's requested */ - _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func); - return; - } - - rb = ctx->CurrentRenderbuffer; - if (!rb) { - _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func); - return; - } - - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - if (rb->InternalFormat == internalFormat && - rb->Width == (GLuint) width && - rb->Height == (GLuint) height) { - /* no change in allocation needed */ - return; - } - - /* These MUST get set by the AllocStorage func */ - rb->Format = MESA_FORMAT_NONE; - rb->NumSamples = samples; - - /* Now allocate the storage */ - ASSERT(rb->AllocStorage); - if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { - /* No error - check/set fields now */ - assert(rb->Format != MESA_FORMAT_NONE); - assert(rb->Width == (GLuint) width); - assert(rb->Height == (GLuint) height); - rb->InternalFormat = internalFormat; - rb->_BaseFormat = baseFormat; - assert(rb->_BaseFormat != 0); - } - else { - /* Probably ran out of memory - clear the fields */ - rb->Width = 0; - rb->Height = 0; - rb->Format = MESA_FORMAT_NONE; - rb->InternalFormat = GL_NONE; - rb->_BaseFormat = GL_NONE; - rb->NumSamples = 0; - } - - /* Invalidate the framebuffers the renderbuffer is attached in. */ - if (rb->AttachedAnytime) { - _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb); - } -} - - -#if FEATURE_OES_EGL_image -void GLAPIENTRY -_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) -{ - struct gl_renderbuffer *rb; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.OES_EGL_image) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glEGLImageTargetRenderbufferStorageOES(unsupported)"); - return; - } - - if (target != GL_RENDERBUFFER) { - _mesa_error(ctx, GL_INVALID_ENUM, - "EGLImageTargetRenderbufferStorageOES"); - return; - } - - rb = ctx->CurrentRenderbuffer; - if (!rb) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "EGLImageTargetRenderbufferStorageOES"); - return; - } - - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image); -} -#endif - - -/** - * Helper function for _mesa_GetRenderbufferParameterivEXT() and - * _mesa_GetFramebufferAttachmentParameterivEXT() - * We have to be careful to respect the base format. For example, if a - * renderbuffer/texture was created with internalFormat=GL_RGB but the - * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE - * we need to return zero. - */ -static GLint -get_component_bits(GLenum pname, GLenum baseFormat, gl_format format) -{ - switch (pname) { - case GL_RENDERBUFFER_RED_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: - if (baseFormat == GL_RGB || baseFormat == GL_RGBA || - baseFormat == GL_RG || baseFormat == GL_RED) - return _mesa_get_format_bits(format, pname); - else - return 0; - case GL_RENDERBUFFER_GREEN_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: - if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG) - return _mesa_get_format_bits(format, pname); - else - return 0; - case GL_RENDERBUFFER_BLUE_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: - if (baseFormat == GL_RGB || baseFormat == GL_RGBA) - return _mesa_get_format_bits(format, pname); - else - return 0; - case GL_RENDERBUFFER_ALPHA_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: - if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA || - baseFormat == GL_LUMINANCE_ALPHA) - return _mesa_get_format_bits(format, pname); - else - return 0; - case GL_RENDERBUFFER_DEPTH_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: - if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL) - return _mesa_get_format_bits(format, pname); - else - return 0; - case GL_RENDERBUFFER_STENCIL_SIZE_EXT: - case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: - if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL) - return _mesa_get_format_bits(format, pname); - else - return 0; - default: - return 0; - } -} - - - -void GLAPIENTRY -_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, - GLsizei width, GLsizei height) -{ - /* GL_ARB_fbo says calling this function is equivalent to calling - * glRenderbufferStorageMultisample() with samples=0. We pass in - * a token value here just for error reporting purposes. - */ - renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES); -} - - -void GLAPIENTRY -_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples, - GLenum internalFormat, - GLsizei width, GLsizei height) -{ - renderbuffer_storage(target, internalFormat, width, height, samples); -} - - -/** - * OpenGL ES version of glRenderBufferStorage. - */ -void GLAPIENTRY -_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, - GLsizei width, GLsizei height) -{ - switch (internalFormat) { - case GL_RGB565: - /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */ - /* choose a closest format */ - internalFormat = GL_RGB5; - break; - default: - break; - } - - renderbuffer_storage(target, internalFormat, width, height, 0); -} - - -void GLAPIENTRY -_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) -{ - struct gl_renderbuffer *rb; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (target != GL_RENDERBUFFER_EXT) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetRenderbufferParameterivEXT(target)"); - return; - } - - rb = ctx->CurrentRenderbuffer; - if (!rb) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetRenderbufferParameterivEXT"); - return; - } - - /* No need to flush here since we're just quering state which is - * not effected by rendering. - */ - - switch (pname) { - case GL_RENDERBUFFER_WIDTH_EXT: - *params = rb->Width; - return; - case GL_RENDERBUFFER_HEIGHT_EXT: - *params = rb->Height; - return; - case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT: - *params = rb->InternalFormat; - return; - case GL_RENDERBUFFER_RED_SIZE_EXT: - case GL_RENDERBUFFER_GREEN_SIZE_EXT: - case GL_RENDERBUFFER_BLUE_SIZE_EXT: - case GL_RENDERBUFFER_ALPHA_SIZE_EXT: - case GL_RENDERBUFFER_DEPTH_SIZE_EXT: - case GL_RENDERBUFFER_STENCIL_SIZE_EXT: - *params = get_component_bits(pname, rb->_BaseFormat, rb->Format); - break; - case GL_RENDERBUFFER_SAMPLES: - if (ctx->Extensions.ARB_framebuffer_object) { - *params = rb->NumSamples; - break; - } - /* fallthrough */ - default: - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetRenderbufferParameterivEXT(target)"); - return; - } -} - - -GLboolean GLAPIENTRY -_mesa_IsFramebufferEXT(GLuint framebuffer) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - if (framebuffer) { - struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer); - if (rb != NULL && rb != &DummyFramebuffer) - return GL_TRUE; - } - return GL_FALSE; -} - - -/** - * Check if any of the attachments of the given framebuffer are textures - * (render to texture). Call ctx->Driver.RenderTexture() for such - * attachments. - */ -static void -check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) -{ - GLuint i; - ASSERT(ctx->Driver.RenderTexture); - - if (fb->Name == 0) - return; /* can't render to texture with winsys framebuffers */ - - for (i = 0; i < BUFFER_COUNT; i++) { - struct gl_renderbuffer_attachment *att = fb->Attachment + i; - struct gl_texture_object *texObj = att->Texture; - if (texObj - && texObj->Image[att->CubeMapFace][att->TextureLevel]) { - ctx->Driver.RenderTexture(ctx, fb, att); - } - } -} - - -/** - * Examine all the framebuffer's attachments to see if any are textures. - * If so, call ctx->Driver.FinishRenderTexture() for each texture to - * notify the device driver that the texture image may have changed. - */ -static void -check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) -{ - if (fb->Name == 0) - return; /* can't render to texture with winsys framebuffers */ - - if (ctx->Driver.FinishRenderTexture) { - GLuint i; - for (i = 0; i < BUFFER_COUNT; i++) { - struct gl_renderbuffer_attachment *att = fb->Attachment + i; - if (att->Texture && att->Renderbuffer) { - ctx->Driver.FinishRenderTexture(ctx, att); - } - } - } -} - - -void GLAPIENTRY -_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) -{ - struct gl_framebuffer *newDrawFb, *newReadFb; - struct gl_framebuffer *oldDrawFb, *oldReadFb; - GLboolean bindReadBuf, bindDrawBuf; - GET_CURRENT_CONTEXT(ctx); - -#ifdef DEBUG - if (ctx->Extensions.ARB_framebuffer_object) { - ASSERT(ctx->Extensions.EXT_framebuffer_object); - ASSERT(ctx->Extensions.EXT_framebuffer_blit); - } -#endif - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (!ctx->Extensions.EXT_framebuffer_object) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBindFramebufferEXT(unsupported)"); - return; - } - - switch (target) { -#if FEATURE_EXT_framebuffer_blit - case GL_DRAW_FRAMEBUFFER_EXT: - if (!ctx->Extensions.EXT_framebuffer_blit) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); - return; - } - bindDrawBuf = GL_TRUE; - bindReadBuf = GL_FALSE; - break; - case GL_READ_FRAMEBUFFER_EXT: - if (!ctx->Extensions.EXT_framebuffer_blit) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); - return; - } - bindDrawBuf = GL_FALSE; - bindReadBuf = GL_TRUE; - break; -#endif - case GL_FRAMEBUFFER_EXT: - bindDrawBuf = GL_TRUE; - bindReadBuf = GL_TRUE; - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); - return; - } - - if (framebuffer) { - /* Binding a user-created framebuffer object */ - newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer); - if (newDrawFb == &DummyFramebuffer) { - /* ID was reserved, but no real framebuffer object made yet */ - newDrawFb = NULL; - } - else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) { - /* All FBO IDs must be Gen'd */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); - return; - } - - if (!newDrawFb) { - /* create new framebuffer object */ - newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); - if (!newDrawFb) { - _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); - return; - } - _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb); - } - newReadFb = newDrawFb; - } - else { - /* Binding the window system framebuffer (which was originally set - * with MakeCurrent). - */ - newDrawFb = ctx->WinSysDrawBuffer; - newReadFb = ctx->WinSysReadBuffer; - } - - ASSERT(newDrawFb); - ASSERT(newDrawFb != &DummyFramebuffer); - - /* save pointers to current/old framebuffers */ - oldDrawFb = ctx->DrawBuffer; - oldReadFb = ctx->ReadBuffer; - - /* check if really changing bindings */ - if (oldDrawFb == newDrawFb) - bindDrawBuf = GL_FALSE; - if (oldReadFb == newReadFb) - bindReadBuf = GL_FALSE; - - /* - * OK, now bind the new Draw/Read framebuffers, if they're changing. - * - * We also check if we're beginning and/or ending render-to-texture. - * When a framebuffer with texture attachments is unbound, call - * ctx->Driver.FinishRenderTexture(). - * When a framebuffer with texture attachments is bound, call - * ctx->Driver.RenderTexture(). - * - * Note that if the ReadBuffer has texture attachments we don't consider - * that a render-to-texture case. - */ - if (bindReadBuf) { - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - /* check if old readbuffer was render-to-texture */ - check_end_texture_render(ctx, oldReadFb); - - _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb); - } - - if (bindDrawBuf) { - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - /* check if old read/draw buffers were render-to-texture */ - if (!bindReadBuf) - check_end_texture_render(ctx, oldReadFb); - - if (oldDrawFb != oldReadFb) - check_end_texture_render(ctx, oldDrawFb); - - /* check if newly bound framebuffer has any texture attachments */ - check_begin_texture_render(ctx, newDrawFb); - - _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb); - } - - if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) { - ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb); - } -} - - -void GLAPIENTRY -_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) -{ - GLint i; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - for (i = 0; i < n; i++) { - if (framebuffers[i] > 0) { - struct gl_framebuffer *fb; - fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]); - if (fb) { - ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]); - - /* check if deleting currently bound framebuffer object */ - if (ctx->Extensions.EXT_framebuffer_blit) { - /* separate draw/read binding points */ - if (fb == ctx->DrawBuffer) { - /* bind default */ - ASSERT(fb->RefCount >= 2); - _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0); - } - if (fb == ctx->ReadBuffer) { - /* bind default */ - ASSERT(fb->RefCount >= 2); - _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0); - } - } - else { - /* only one binding point for read/draw buffers */ - if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) { - /* bind default */ - ASSERT(fb->RefCount >= 2); - _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); - } - } - - /* remove from hash table immediately, to free the ID */ - _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]); - - if (fb != &DummyFramebuffer) { - /* But the object will not be freed until it's no longer - * bound in any context. - */ - _mesa_reference_framebuffer(&fb, NULL); - } - } - } - } -} - - -void GLAPIENTRY -_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers) -{ - GET_CURRENT_CONTEXT(ctx); - GLuint first; - GLint i; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (n < 0) { - _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)"); - return; - } - - if (!framebuffers) - return; - - first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n); - - for (i = 0; i < n; i++) { - GLuint name = first + i; - framebuffers[i] = name; - /* insert dummy placeholder into hash table */ - _glthread_LOCK_MUTEX(ctx->Shared->Mutex); - _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer); - _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); - } -} - - - -GLenum GLAPIENTRY -_mesa_CheckFramebufferStatusEXT(GLenum target) -{ - struct gl_framebuffer *buffer; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); - - buffer = get_framebuffer_target(ctx, target); - if (!buffer) { - _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); - return 0; - } - - if (buffer->Name == 0) { - /* The window system / default framebuffer is always complete */ - return GL_FRAMEBUFFER_COMPLETE_EXT; - } - - /* No need to flush here */ - - if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { - _mesa_test_framebuffer_completeness(ctx, buffer); - } - - return buffer->_Status; -} - - - -/** - * Common code called by glFramebufferTexture1D/2D/3DEXT(). - */ -static void -framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, - GLenum attachment, GLenum textarget, GLuint texture, - GLint level, GLint zoffset) -{ - struct gl_renderbuffer_attachment *att; - struct gl_texture_object *texObj = NULL; - struct gl_framebuffer *fb; - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - fb = get_framebuffer_target(ctx, target); - if (!fb) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferTexture%sEXT(target=0x%x)", caller, target); - return; - } - - /* check framebuffer binding */ - if (fb->Name == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTexture%sEXT", caller); - return; - } - - - /* The textarget, level, and zoffset parameters are only validated if - * texture is non-zero. - */ - if (texture) { - GLboolean err = GL_TRUE; - - texObj = _mesa_lookup_texture(ctx, texture); - if (texObj != NULL) { - if (textarget == 0) { - /* XXX what's the purpose of this? */ - err = (texObj->Target != GL_TEXTURE_3D) && - (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) && - (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT); - } - else { - err = (texObj->Target == GL_TEXTURE_CUBE_MAP) - ? !IS_CUBE_FACE(textarget) - : (texObj->Target != textarget); - } - } - else { - /* can't render to a non-existant texture */ - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTexture%sEXT(non existant texture)", - caller); - return; - } - - if (err) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTexture%sEXT(texture target mismatch)", - caller); - return; - } - - if (texObj->Target == GL_TEXTURE_3D) { - const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); - if (zoffset < 0 || zoffset >= maxSize) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glFramebufferTexture%sEXT(zoffset)", caller); - return; - } - } - else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) || - (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) { - if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glFramebufferTexture%sEXT(layer)", caller); - return; - } - } - - if ((level < 0) || - (level >= _mesa_max_texture_levels(ctx, texObj->Target))) { - _mesa_error(ctx, GL_INVALID_VALUE, - "glFramebufferTexture%sEXT(level)", caller); - return; - } - } - - att = _mesa_get_attachment(ctx, fb, attachment); - if (att == NULL) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferTexture%sEXT(attachment)", caller); - return; - } - - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - _glthread_LOCK_MUTEX(fb->Mutex); - if (texObj) { - _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, - level, zoffset); - /* Set the render-to-texture flag. We'll check this flag in - * glTexImage() and friends to determine if we need to revalidate - * any FBOs that might be rendering into this texture. - * This flag never gets cleared since it's non-trivial to determine - * when all FBOs might be done rendering to this texture. That's OK - * though since it's uncommon to render to a texture then repeatedly - * call glTexImage() to change images in the texture. - */ - texObj->_RenderToTexture = GL_TRUE; - } - else { - _mesa_remove_attachment(ctx, att); - } - - invalidate_framebuffer(fb); - - _glthread_UNLOCK_MUTEX(fb->Mutex); -} - - - -void GLAPIENTRY -_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, - GLenum textarget, GLuint texture, GLint level) -{ - GET_CURRENT_CONTEXT(ctx); - - if ((texture != 0) && (textarget != GL_TEXTURE_1D)) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferTexture1DEXT(textarget)"); - return; - } - - framebuffer_texture(ctx, "1D", target, attachment, textarget, texture, - level, 0); -} - - -void GLAPIENTRY -_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, - GLenum textarget, GLuint texture, GLint level) -{ - GET_CURRENT_CONTEXT(ctx); - - if ((texture != 0) && - (textarget != GL_TEXTURE_2D) && - (textarget != GL_TEXTURE_RECTANGLE_ARB) && - (!IS_CUBE_FACE(textarget))) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTexture2DEXT(textarget=0x%x)", textarget); - return; - } - - framebuffer_texture(ctx, "2D", target, attachment, textarget, texture, - level, 0); -} - - -void GLAPIENTRY -_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, - GLenum textarget, GLuint texture, - GLint level, GLint zoffset) -{ - GET_CURRENT_CONTEXT(ctx); - - if ((texture != 0) && (textarget != GL_TEXTURE_3D)) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferTexture3DEXT(textarget)"); - return; - } - - framebuffer_texture(ctx, "3D", target, attachment, textarget, texture, - level, zoffset); -} - - -void GLAPIENTRY -_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment, - GLuint texture, GLint level, GLint layer) -{ - GET_CURRENT_CONTEXT(ctx); - - framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, - level, layer); -} - - -void GLAPIENTRY -_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment, - GLenum renderbufferTarget, - GLuint renderbuffer) -{ - struct gl_renderbuffer_attachment *att; - struct gl_framebuffer *fb; - struct gl_renderbuffer *rb; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - fb = get_framebuffer_target(ctx, target); - if (!fb) { - _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)"); - return; - } - - if (renderbufferTarget != GL_RENDERBUFFER_EXT) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferRenderbufferEXT(renderbufferTarget)"); - return; - } - - if (fb->Name == 0) { - /* Can't attach new renderbuffers to a window system framebuffer */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT"); - return; - } - - att = _mesa_get_attachment(ctx, fb, attachment); - if (att == NULL) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glFramebufferRenderbufferEXT(invalid attachment %s)", - _mesa_lookup_enum_by_nr(attachment)); - return; - } - - if (renderbuffer) { - rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); - if (!rb) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferRenderbufferEXT(non-existant" - " renderbuffer %u)", renderbuffer); - return; - } - else if (rb == &DummyRenderbuffer) { - /* This is what NVIDIA does */ - _mesa_error(ctx, GL_INVALID_VALUE, - "glFramebufferRenderbufferEXT(renderbuffer %u)", - renderbuffer); - return; - } - } - else { - /* remove renderbuffer attachment */ - rb = NULL; - } - - if (attachment == GL_DEPTH_STENCIL_ATTACHMENT && - rb && rb->Format != MESA_FORMAT_NONE) { - /* make sure the renderbuffer is a depth/stencil format */ - const GLenum baseFormat = _mesa_get_format_base_format(rb->Format); - if (baseFormat != GL_DEPTH_STENCIL) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferRenderbufferEXT(renderbuffer" - " is not DEPTH_STENCIL format)"); - return; - } - } - - - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - assert(ctx->Driver.FramebufferRenderbuffer); - ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb); - - /* Some subsequent GL commands may depend on the framebuffer's visual - * after the binding is updated. Update visual info now. - */ - _mesa_update_framebuffer_visual(ctx, fb); -} - - -void GLAPIENTRY -_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, - GLenum pname, GLint *params) -{ - const struct gl_renderbuffer_attachment *att; - struct gl_framebuffer *buffer; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - - buffer = get_framebuffer_target(ctx, target); - if (!buffer) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(target)"); - return; - } - - if (buffer->Name == 0) { - /* the default / window-system FBO */ - att = _mesa_get_fb0_attachment(ctx, buffer, attachment); - } - else { - /* user-created framebuffer FBO */ - att = _mesa_get_attachment(ctx, buffer, attachment); - } - - if (att == NULL) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(attachment)"); - return; - } - - if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { - /* the depth and stencil attachments must point to the same buffer */ - const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt; - depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT); - stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT); - if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL" - " attachments differ)"); - return; - } - } - - /* No need to flush here */ - - switch (pname) { - case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT: - *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type; - return; - case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT: - if (att->Type == GL_RENDERBUFFER_EXT) { - *params = att->Renderbuffer->Name; - } - else if (att->Type == GL_TEXTURE) { - *params = att->Texture->Name; - } - else { - assert(att->Type == GL_NONE); - *params = 0; - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT: - if (att->Type == GL_TEXTURE) { - *params = att->TextureLevel; - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT: - if (att->Type == GL_TEXTURE) { - if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) { - *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace; - } - else { - *params = 0; - } - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: - if (att->Type == GL_TEXTURE) { - if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) { - *params = att->Zoffset; - } - else { - *params = 0; - } - } - else { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: - if (!ctx->Extensions.ARB_framebuffer_object) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - } - else { - if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) { - *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format); - } - else { - /* According to ARB_framebuffer_sRGB, we should return LINEAR - * if the sRGB conversion is unsupported. */ - *params = GL_LINEAR; - } - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: - if (!ctx->Extensions.ARB_framebuffer_object) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - return; - } - else { - gl_format format = att->Renderbuffer->Format; - if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) { - /* special cases */ - *params = GL_INDEX; - } - else { - *params = _mesa_get_format_datatype(format); - } - } - return; - case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: - case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: - case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: - case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: - case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: - case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: - if (!ctx->Extensions.ARB_framebuffer_object) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - } - else if (att->Texture) { - const struct gl_texture_image *texImage = - _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target, - att->TextureLevel); - if (texImage) { - *params = get_component_bits(pname, texImage->_BaseFormat, - texImage->TexFormat); - } - else { - *params = 0; - } - } - else if (att->Renderbuffer) { - *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat, - att->Renderbuffer->Format); - } - else { - *params = 0; - } - return; - default: - _mesa_error(ctx, GL_INVALID_ENUM, - "glGetFramebufferAttachmentParameterivEXT(pname)"); - return; - } -} - - -void GLAPIENTRY -_mesa_GenerateMipmapEXT(GLenum target) -{ - struct gl_texture_object *texObj; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - switch (target) { - case GL_TEXTURE_1D: - case GL_TEXTURE_2D: - case GL_TEXTURE_3D: - case GL_TEXTURE_CUBE_MAP: - /* OK, legal value */ - break; - default: - /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */ - _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)"); - return; - } - - texObj = _mesa_get_current_tex_object(ctx, target); - - if (texObj->BaseLevel >= texObj->MaxLevel) { - /* nothing to do */ - return; - } - - if (texObj->Target == GL_TEXTURE_CUBE_MAP && - !_mesa_cube_complete(texObj)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glGenerateMipmap(incomplete cube map)"); - return; - } - - _mesa_lock_texture(ctx, texObj); - if (target == GL_TEXTURE_CUBE_MAP) { - GLuint face; - for (face = 0; face < 6; face++) - ctx->Driver.GenerateMipmap(ctx, - GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face, - texObj); - } - else { - ctx->Driver.GenerateMipmap(ctx, target, texObj); - } - _mesa_unlock_texture(ctx, texObj); -} - - -#if FEATURE_EXT_framebuffer_blit - -static const struct gl_renderbuffer_attachment * -find_attachment(const struct gl_framebuffer *fb, - const struct gl_renderbuffer *rb) -{ - GLuint i; - for (i = 0; i < Elements(fb->Attachment); i++) { - if (fb->Attachment[i].Renderbuffer == rb) - return &fb->Attachment[i]; - } - return NULL; -} - - - -/** - * Blit rectangular region, optionally from one framebuffer to another. - * - * Note, if the src buffer is multisampled and the dest is not, this is - * when the samples must be resolved to a single color. - */ -void GLAPIENTRY -_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, - GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, - GLbitfield mask, GLenum filter) -{ - const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT | - GL_DEPTH_BUFFER_BIT | - GL_STENCIL_BUFFER_BIT); - const struct gl_framebuffer *readFb, *drawFb; - const struct gl_renderbuffer *colorReadRb, *colorDrawRb; - GET_CURRENT_CONTEXT(ctx); - - ASSERT_OUTSIDE_BEGIN_END(ctx); - FLUSH_VERTICES(ctx, _NEW_BUFFERS); - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, - "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n", - srcX0, srcY0, srcX1, srcY1, - dstX0, dstY0, dstX1, dstY1, - mask, _mesa_lookup_enum_by_nr(filter)); - - if (ctx->NewState) { - _mesa_update_state(ctx); - } - - readFb = ctx->ReadBuffer; - drawFb = ctx->DrawBuffer; - - if (!readFb || !drawFb) { - /* This will normally never happen but someday we may want to - * support MakeCurrent() with no drawables. - */ - return; - } - - /* check for complete framebuffers */ - if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT || - readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, - "glBlitFramebufferEXT(incomplete draw/read buffers)"); - return; - } - - if (filter != GL_NEAREST && filter != GL_LINEAR) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)"); - return; - } - - if (mask & ~legalMaskBits) { - _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)"); - return; - } - - /* depth/stencil must be blitted with nearest filtering */ - if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) - && filter != GL_NEAREST) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)"); - return; - } - - /* get color read/draw renderbuffers */ - if (mask & GL_COLOR_BUFFER_BIT) { - colorReadRb = readFb->_ColorReadBuffer; - colorDrawRb = drawFb->_ColorDrawBuffers[0]; - } - else { - colorReadRb = colorDrawRb = NULL; - } - - if (mask & GL_STENCIL_BUFFER_BIT) { - struct gl_renderbuffer *readRb = readFb->_StencilBuffer; - struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer; - if (!readRb || - !drawRb || - _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != - _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(stencil buffer size mismatch)"); - return; - } - } - - if (mask & GL_DEPTH_BUFFER_BIT) { - struct gl_renderbuffer *readRb = readFb->_DepthBuffer; - struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer; - if (!readRb || - !drawRb || - _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != - _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(depth buffer size mismatch)"); - return; - } - } - - if (readFb->Visual.samples > 0 && - drawFb->Visual.samples > 0 && - readFb->Visual.samples != drawFb->Visual.samples) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(mismatched samples"); - return; - } - - /* extra checks for multisample copies... */ - if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { - /* src and dest region sizes must be the same */ - if (srcX1 - srcX0 != dstX1 - dstX0 || - srcY1 - srcY0 != dstY1 - dstY0) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(bad src/dst multisample region sizes)"); - return; - } - - /* color formats must match */ - if (colorReadRb && - colorDrawRb && - colorReadRb->Format != colorDrawRb->Format) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlitFramebufferEXT(bad src/dst multisample pixel formats)"); - return; - } - } - - if (!ctx->Extensions.EXT_framebuffer_blit) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); - return; - } - - /* Debug code */ - if (DEBUG_BLIT) { - printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d," - " 0x%x, 0x%x)\n", - srcX0, srcY0, srcX1, srcY1, - dstX0, dstY0, dstX1, dstY1, - mask, filter); - if (colorReadRb) { - const struct gl_renderbuffer_attachment *att; - - att = find_attachment(readFb, colorReadRb); - printf(" Src FBO %u RB %u (%dx%d) ", - readFb->Name, colorReadRb->Name, - colorReadRb->Width, colorReadRb->Height); - if (att && att->Texture) { - printf("Tex %u tgt 0x%x level %u face %u", - att->Texture->Name, - att->Texture->Target, - att->TextureLevel, - att->CubeMapFace); - } - printf("\n"); - - att = find_attachment(drawFb, colorDrawRb); - printf(" Dst FBO %u RB %u (%dx%d) ", - drawFb->Name, colorDrawRb->Name, - colorDrawRb->Width, colorDrawRb->Height); - if (att && att->Texture) { - printf("Tex %u tgt 0x%x level %u face %u", - att->Texture->Name, - att->Texture->Target, - att->TextureLevel, - att->CubeMapFace); - } - printf("\n"); - } - } - - ASSERT(ctx->Driver.BlitFramebuffer); - ctx->Driver.BlitFramebuffer(ctx, - srcX0, srcY0, srcX1, srcY1, - dstX0, dstY0, dstX1, dstY1, - mask, filter); -} -#endif /* FEATURE_EXT_framebuffer_blit */ - -#if FEATURE_ARB_geometry_shader4 -void GLAPIENTRY -_mesa_FramebufferTextureARB(GLenum target, GLenum attachment, - GLuint texture, GLint level) -{ - GET_CURRENT_CONTEXT(ctx); - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTextureARB " - "not implemented!"); -} - -void GLAPIENTRY -_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment, - GLuint texture, GLint level, GLenum face) -{ - GET_CURRENT_CONTEXT(ctx); - _mesa_error(ctx, GL_INVALID_OPERATION, - "glFramebufferTextureFaceARB " - "not implemented!"); -} -#endif /* FEATURE_ARB_geometry_shader4 */ +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/* + * GL_EXT/ARB_framebuffer_object extensions + * + * Authors: + * Brian Paul + */ + + +#include "buffers.h" +#include "context.h" +#include "enums.h" +#include "fbobject.h" +#include "formats.h" +#include "framebuffer.h" +#include "hash.h" +#include "macros.h" +#include "mfeatures.h" +#include "mtypes.h" +#include "renderbuffer.h" +#include "state.h" +#include "teximage.h" +#include "texobj.h" + + +/** Set this to 1 to help debug FBO incompleteness problems */ +#define DEBUG_FBO 0 + +/** Set this to 1 to debug/log glBlitFramebuffer() calls */ +#define DEBUG_BLIT 0 + + +/** + * Notes: + * + * None of the GL_EXT_framebuffer_object functions are compiled into + * display lists. + */ + + + +/* + * When glGenRender/FramebuffersEXT() is called we insert pointers to + * these placeholder objects into the hash table. + * Later, when the object ID is first bound, we replace the placeholder + * with the real frame/renderbuffer. + */ +static struct gl_framebuffer DummyFramebuffer; +static struct gl_renderbuffer DummyRenderbuffer; + +/* We bind this framebuffer when applications pass a NULL + * drawable/surface in make current. */ +static struct gl_framebuffer IncompleteFramebuffer; + + +#define IS_CUBE_FACE(TARGET) \ + ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \ + (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) + + +static void +delete_dummy_renderbuffer(struct gl_renderbuffer *rb) +{ + /* no op */ +} + +static void +delete_dummy_framebuffer(struct gl_framebuffer *fb) +{ + /* no op */ +} + + +void +_mesa_init_fbobjects(struct gl_context *ctx) +{ + _glthread_INIT_MUTEX(DummyFramebuffer.Mutex); + _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex); + _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex); + DummyFramebuffer.Delete = delete_dummy_framebuffer; + DummyRenderbuffer.Delete = delete_dummy_renderbuffer; + IncompleteFramebuffer.Delete = delete_dummy_framebuffer; +} + +struct gl_framebuffer * +_mesa_get_incomplete_framebuffer(void) +{ + return &IncompleteFramebuffer; +} + +/** + * Helper routine for getting a gl_renderbuffer. + */ +struct gl_renderbuffer * +_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id) +{ + struct gl_renderbuffer *rb; + + if (id == 0) + return NULL; + + rb = (struct gl_renderbuffer *) + _mesa_HashLookup(ctx->Shared->RenderBuffers, id); + return rb; +} + + +/** + * Helper routine for getting a gl_framebuffer. + */ +struct gl_framebuffer * +_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id) +{ + struct gl_framebuffer *fb; + + if (id == 0) + return NULL; + + fb = (struct gl_framebuffer *) + _mesa_HashLookup(ctx->Shared->FrameBuffers, id); + return fb; +} + + +/** + * Mark the given framebuffer as invalid. This will force the + * test for framebuffer completeness to be done before the framebuffer + * is used. + */ +static void +invalidate_framebuffer(struct gl_framebuffer *fb) +{ + fb->_Status = 0; /* "indeterminate" */ +} + + +/** + * Return the gl_framebuffer object which corresponds to the given + * framebuffer target, such as GL_DRAW_FRAMEBUFFER. + * Check support for GL_EXT_framebuffer_blit to determine if certain + * targets are legal. + * \return gl_framebuffer pointer or NULL if target is illegal + */ +static struct gl_framebuffer * +get_framebuffer_target(struct gl_context *ctx, GLenum target) +{ + switch (target) { + case GL_DRAW_FRAMEBUFFER: + return ctx->Extensions.EXT_framebuffer_blit ? ctx->DrawBuffer : NULL; + case GL_READ_FRAMEBUFFER: + return ctx->Extensions.EXT_framebuffer_blit ? ctx->ReadBuffer : NULL; + case GL_FRAMEBUFFER_EXT: + return ctx->DrawBuffer; + default: + return NULL; + } +} + + +/** + * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding + * gl_renderbuffer_attachment object. + * This function is only used for user-created FB objects, not the + * default / window-system FB object. + * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to + * the depth buffer attachment point. + */ +struct gl_renderbuffer_attachment * +_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, + GLenum attachment) +{ + GLuint i; + + assert(fb->Name > 0); + + switch (attachment) { + case GL_COLOR_ATTACHMENT0_EXT: + case GL_COLOR_ATTACHMENT1_EXT: + case GL_COLOR_ATTACHMENT2_EXT: + case GL_COLOR_ATTACHMENT3_EXT: + case GL_COLOR_ATTACHMENT4_EXT: + case GL_COLOR_ATTACHMENT5_EXT: + case GL_COLOR_ATTACHMENT6_EXT: + case GL_COLOR_ATTACHMENT7_EXT: + case GL_COLOR_ATTACHMENT8_EXT: + case GL_COLOR_ATTACHMENT9_EXT: + case GL_COLOR_ATTACHMENT10_EXT: + case GL_COLOR_ATTACHMENT11_EXT: + case GL_COLOR_ATTACHMENT12_EXT: + case GL_COLOR_ATTACHMENT13_EXT: + case GL_COLOR_ATTACHMENT14_EXT: + case GL_COLOR_ATTACHMENT15_EXT: + i = attachment - GL_COLOR_ATTACHMENT0_EXT; + if (i >= ctx->Const.MaxColorAttachments) { + return NULL; + } + return &fb->Attachment[BUFFER_COLOR0 + i]; + case GL_DEPTH_STENCIL_ATTACHMENT: + /* fall-through */ + case GL_DEPTH_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_DEPTH_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_DEPTH]; + case GL_STENCIL_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_STENCIL_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_STENCIL]; + default: + return NULL; + } +} + + +/** + * As above, but only used for getting attachments of the default / + * window-system framebuffer (not user-created framebuffer objects). + */ +static struct gl_renderbuffer_attachment * +_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, + GLenum attachment) +{ + assert(fb->Name == 0); + + switch (attachment) { + case GL_FRONT_LEFT: + return &fb->Attachment[BUFFER_FRONT_LEFT]; + case GL_FRONT_RIGHT: + return &fb->Attachment[BUFFER_FRONT_RIGHT]; + case GL_BACK_LEFT: + return &fb->Attachment[BUFFER_BACK_LEFT]; + case GL_BACK_RIGHT: + return &fb->Attachment[BUFFER_BACK_RIGHT]; + case GL_AUX0: + if (fb->Visual.numAuxBuffers == 1) { + return &fb->Attachment[BUFFER_AUX0]; + } + return NULL; + case GL_DEPTH_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_DEPTH_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_DEPTH]; + case GL_STENCIL_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_STENCIL_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_STENCIL]; + default: + return NULL; + } +} + + + +/** + * Remove any texture or renderbuffer attached to the given attachment + * point. Update reference counts, etc. + */ +void +_mesa_remove_attachment(struct gl_context *ctx, + struct gl_renderbuffer_attachment *att) +{ + if (att->Type == GL_TEXTURE) { + ASSERT(att->Texture); + if (ctx->Driver.FinishRenderTexture) { + /* tell driver that we're done rendering to this texture. */ + ctx->Driver.FinishRenderTexture(ctx, att); + } + _mesa_reference_texobj(&att->Texture, NULL); /* unbind */ + ASSERT(!att->Texture); + } + if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) { + ASSERT(!att->Texture); + _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */ + ASSERT(!att->Renderbuffer); + } + att->Type = GL_NONE; + att->Complete = GL_TRUE; +} + + +/** + * Bind a texture object to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_texture_attachment(struct gl_context *ctx, + struct gl_framebuffer *fb, + struct gl_renderbuffer_attachment *att, + struct gl_texture_object *texObj, + GLenum texTarget, GLuint level, GLuint zoffset) +{ + if (att->Texture == texObj) { + /* re-attaching same texture */ + ASSERT(att->Type == GL_TEXTURE); + if (ctx->Driver.FinishRenderTexture) + ctx->Driver.FinishRenderTexture(ctx, att); + } + else { + /* new attachment */ + if (ctx->Driver.FinishRenderTexture && att->Texture) + ctx->Driver.FinishRenderTexture(ctx, att); + _mesa_remove_attachment(ctx, att); + att->Type = GL_TEXTURE; + assert(!att->Texture); + _mesa_reference_texobj(&att->Texture, texObj); + } + + /* always update these fields */ + att->TextureLevel = level; + att->CubeMapFace = _mesa_tex_target_to_face(texTarget); + att->Zoffset = zoffset; + att->Complete = GL_FALSE; + + if (_mesa_get_attachment_teximage(att)) { + ctx->Driver.RenderTexture(ctx, fb, att); + } + + invalidate_framebuffer(fb); +} + + +/** + * Bind a renderbuffer to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_renderbuffer_attachment(struct gl_context *ctx, + struct gl_renderbuffer_attachment *att, + struct gl_renderbuffer *rb) +{ + /* XXX check if re-doing same attachment, exit early */ + _mesa_remove_attachment(ctx, att); + att->Type = GL_RENDERBUFFER_EXT; + att->Texture = NULL; /* just to be safe */ + att->Complete = GL_FALSE; + _mesa_reference_renderbuffer(&att->Renderbuffer, rb); +} + + +/** + * Fallback for ctx->Driver.FramebufferRenderbuffer() + * Attach a renderbuffer object to a framebuffer object. + */ +void +_mesa_framebuffer_renderbuffer(struct gl_context *ctx, + struct gl_framebuffer *fb, + GLenum attachment, struct gl_renderbuffer *rb) +{ + struct gl_renderbuffer_attachment *att; + + _glthread_LOCK_MUTEX(fb->Mutex); + + att = _mesa_get_attachment(ctx, fb, attachment); + ASSERT(att); + if (rb) { + _mesa_set_renderbuffer_attachment(ctx, att, rb); + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { + /* do stencil attachment here (depth already done above) */ + att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT); + assert(att); + _mesa_set_renderbuffer_attachment(ctx, att, rb); + } + rb->AttachedAnytime = GL_TRUE; + } + else { + _mesa_remove_attachment(ctx, att); + } + + invalidate_framebuffer(fb); + + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + +/** + * Fallback for ctx->Driver.ValidateFramebuffer() + * Check if the renderbuffer's formats are supported by the software + * renderer. + * Drivers should probably override this. + */ +void +_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb) +{ + gl_buffer_index buf; + for (buf = 0; buf < BUFFER_COUNT; buf++) { + const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer; + if (rb) { + switch (rb->_BaseFormat) { + case GL_ALPHA: + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE: + case GL_INTENSITY: + case GL_RED: + case GL_RG: + fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED; + return; + default: + /* render buffer format is supported by software rendering */ + ; + } + } + } +} + + +/** + * For debug only. + */ +static void +att_incomplete(const char *msg) +{ +#if DEBUG_FBO + _mesa_debug(NULL, "attachment incomplete: %s\n", msg); +#else + (void) msg; +#endif +} + + +/** + * For debug only. + */ +static void +fbo_incomplete(const char *msg, int index) +{ +#if DEBUG_FBO + _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); +#else + (void) msg; + (void) index; +#endif +} + + +/** + * Is the given base format a legal format for a color renderbuffer? + */ +GLboolean +_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat) +{ + switch (baseFormat) { + case GL_RGB: + case GL_RGBA: + return GL_TRUE; + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_INTENSITY: + case GL_ALPHA: + return ctx->Extensions.ARB_framebuffer_object; + case GL_RED: + case GL_RG: + return ctx->Extensions.ARB_texture_rg; + default: + return GL_FALSE; + } +} + + +/** + * Is the given base format a legal format for a depth/stencil renderbuffer? + */ +static GLboolean +is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat) +{ + switch (baseFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_STENCIL_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if an attachment point is complete and update its Complete field. + * \param format if GL_COLOR, this is a color attachment point, + * if GL_DEPTH, this is a depth component attachment point, + * if GL_STENCIL, this is a stencil component attachment point. + */ +static void +test_attachment_completeness(const struct gl_context *ctx, GLenum format, + struct gl_renderbuffer_attachment *att) +{ + assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL); + + /* assume complete */ + att->Complete = GL_TRUE; + + /* Look for reasons why the attachment might be incomplete */ + if (att->Type == GL_TEXTURE) { + const struct gl_texture_object *texObj = att->Texture; + struct gl_texture_image *texImage; + GLenum baseFormat; + + if (!texObj) { + att_incomplete("no texobj"); + att->Complete = GL_FALSE; + return; + } + + texImage = texObj->Image[att->CubeMapFace][att->TextureLevel]; + if (!texImage) { + att_incomplete("no teximage"); + att->Complete = GL_FALSE; + return; + } + if (texImage->Width < 1 || texImage->Height < 1) { + att_incomplete("teximage width/height=0"); + printf("texobj = %u\n", texObj->Name); + printf("level = %d\n", att->TextureLevel); + att->Complete = GL_FALSE; + return; + } + if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { + att_incomplete("bad z offset"); + att->Complete = GL_FALSE; + return; + } + + baseFormat = _mesa_get_format_base_format(texImage->TexFormat); + + if (format == GL_COLOR) { + if (!_mesa_is_legal_color_format(ctx, baseFormat)) { + att_incomplete("bad format"); + att->Complete = GL_FALSE; + return; + } + if (_mesa_is_format_compressed(texImage->TexFormat)) { + att_incomplete("compressed internalformat"); + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (baseFormat == GL_DEPTH_COMPONENT) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + ctx->Extensions.ARB_depth_texture && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + att_incomplete("bad depth format"); + return; + } + } + else { + ASSERT(format == GL_STENCIL); + if (ctx->Extensions.EXT_packed_depth_stencil && + ctx->Extensions.ARB_depth_texture && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + /* no such thing as stencil-only textures */ + att_incomplete("illegal stencil texture"); + att->Complete = GL_FALSE; + return; + } + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + const GLenum baseFormat = + _mesa_get_format_base_format(att->Renderbuffer->Format); + + ASSERT(att->Renderbuffer); + if (!att->Renderbuffer->InternalFormat || + att->Renderbuffer->Width < 1 || + att->Renderbuffer->Height < 1) { + att_incomplete("0x0 renderbuffer"); + att->Complete = GL_FALSE; + return; + } + if (format == GL_COLOR) { + if (!_mesa_is_legal_color_format(ctx, baseFormat)) { + att_incomplete("bad renderbuffer color format"); + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (baseFormat == GL_DEPTH_COMPONENT) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att_incomplete("bad renderbuffer depth format"); + att->Complete = GL_FALSE; + return; + } + } + else { + assert(format == GL_STENCIL); + if (baseFormat == GL_STENCIL_INDEX) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + att_incomplete("bad renderbuffer stencil format"); + return; + } + } + } + else { + ASSERT(att->Type == GL_NONE); + /* complete */ + return; + } +} + + +/** + * Test if the given framebuffer object is complete and update its + * Status field with the results. + * Calls the ctx->Driver.ValidateFramebuffer() function to allow the + * driver to make hardware-specific validation/completeness checks. + * Also update the framebuffer's Width and Height fields if the + * framebuffer is complete. + */ +void +_mesa_test_framebuffer_completeness(struct gl_context *ctx, + struct gl_framebuffer *fb) +{ + GLuint numImages; + GLenum intFormat = GL_NONE; /* color buffers' internal format */ + GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0; + GLint numSamples = -1; + GLint i; + GLuint j; + + assert(fb->Name != 0); + + numImages = 0; + fb->Width = 0; + fb->Height = 0; + + /* Start at -2 to more easily loop over all attachment points. + * -2: depth buffer + * -1: stencil buffer + * >=0: color buffer + */ + for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) { + struct gl_renderbuffer_attachment *att; + GLenum f; + gl_format attFormat; + + /* + * XXX for ARB_fbo, only check color buffers that are named by + * GL_READ_BUFFER and GL_DRAW_BUFFERi. + */ + + /* check for attachment completeness + */ + if (i == -2) { + att = &fb->Attachment[BUFFER_DEPTH]; + test_attachment_completeness(ctx, GL_DEPTH, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("depth attachment incomplete", -1); + return; + } + } + else if (i == -1) { + att = &fb->Attachment[BUFFER_STENCIL]; + test_attachment_completeness(ctx, GL_STENCIL, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("stencil attachment incomplete", -1); + return; + } + } + else { + att = &fb->Attachment[BUFFER_COLOR0 + i]; + test_attachment_completeness(ctx, GL_COLOR, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("color attachment incomplete", i); + return; + } + } + + /* get width, height, format of the renderbuffer/texture + */ + if (att->Type == GL_TEXTURE) { + const struct gl_texture_image *texImg = + _mesa_get_attachment_teximage(att); + minWidth = MIN2(minWidth, texImg->Width); + maxWidth = MAX2(maxWidth, texImg->Width); + minHeight = MIN2(minHeight, texImg->Height); + maxHeight = MAX2(maxHeight, texImg->Height); + f = texImg->_BaseFormat; + attFormat = texImg->TexFormat; + numImages++; + if (!_mesa_is_legal_color_format(ctx, f) && + !is_legal_depth_format(ctx, f)) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("texture attachment incomplete", -1); + return; + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + minWidth = MIN2(minWidth, att->Renderbuffer->Width); + maxWidth = MAX2(minWidth, att->Renderbuffer->Width); + minHeight = MIN2(minHeight, att->Renderbuffer->Height); + maxHeight = MAX2(minHeight, att->Renderbuffer->Height); + f = att->Renderbuffer->InternalFormat; + attFormat = att->Renderbuffer->Format; + numImages++; + } + else { + assert(att->Type == GL_NONE); + continue; + } + + if (att->Renderbuffer && numSamples < 0) { + /* first buffer */ + numSamples = att->Renderbuffer->NumSamples; + } + + /* check if integer color */ + fb->_IntegerColor = _mesa_is_format_integer_color(attFormat); + + /* Error-check width, height, format, samples + */ + if (numImages == 1) { + /* save format, num samples */ + if (i >= 0) { + intFormat = f; + } + } + else { + if (!ctx->Extensions.ARB_framebuffer_object) { + /* check that width, height, format are same */ + if (minWidth != maxWidth || minHeight != maxHeight) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT; + fbo_incomplete("width or height mismatch", -1); + return; + } + /* check that all color buffer have same format */ + if (intFormat != GL_NONE && f != intFormat) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("format mismatch", -1); + return; + } + } + if (att->Renderbuffer && + att->Renderbuffer->NumSamples != numSamples) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; + fbo_incomplete("inconsistant number of samples", i); + return; + } + + } + } + +#if FEATURE_GL + if (ctx->API == API_OPENGL) { + /* Check that all DrawBuffers are present */ + for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) { + if (fb->ColorDrawBuffer[j] != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT; + fbo_incomplete("missing drawbuffer", j); + return; + } + } + } + + /* Check that the ReadBuffer is present */ + if (fb->ColorReadBuffer != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; + fbo_incomplete("missing readbuffer", -1); + return; + } + } + } +#else + (void) j; +#endif + + if (numImages == 0) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; + fbo_incomplete("no attachments", -1); + return; + } + + /* Provisionally set status = COMPLETE ... */ + fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; + + /* ... but the driver may say the FB is incomplete. + * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED + * if anything. + */ + if (ctx->Driver.ValidateFramebuffer) { + ctx->Driver.ValidateFramebuffer(ctx, fb); + if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + fbo_incomplete("driver marked FBO as incomplete", -1); + } + } + + if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) { + /* + * Note that if ARB_framebuffer_object is supported and the attached + * renderbuffers/textures are different sizes, the framebuffer + * width/height will be set to the smallest width/height. + */ + fb->Width = minWidth; + fb->Height = minHeight; + + /* finally, update the visual info for the framebuffer */ + _mesa_update_framebuffer_visual(ctx, fb); + } +} + + +GLboolean GLAPIENTRY +_mesa_IsRenderbufferEXT(GLuint renderbuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (renderbuffer) { + struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (rb != NULL && rb != &DummyRenderbuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer) +{ + struct gl_renderbuffer *newRb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)"); + return; + } + + /* No need to flush here since the render buffer binding has no + * effect on rendering state. + */ + + if (renderbuffer) { + newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (newRb == &DummyRenderbuffer) { + /* ID was reserved, but no real renderbuffer object made yet */ + newRb = NULL; + } + else if (!newRb && ctx->Extensions.ARB_framebuffer_object) { + /* All RB IDs must be Gen'd */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)"); + return; + } + + if (!newRb) { + /* create new renderbuffer object */ + newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer); + if (!newRb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT"); + return; + } + ASSERT(newRb->AllocStorage); + _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb); + newRb->RefCount = 1; /* referenced by hash table */ + } + } + else { + newRb = NULL; + } + + ASSERT(newRb != &DummyRenderbuffer); + + _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb); +} + + +/** + * If the given renderbuffer is anywhere attached to the framebuffer, detach + * the renderbuffer. + * This is used when a renderbuffer object is deleted. + * The spec calls for unbinding. + */ +static void +detach_renderbuffer(struct gl_context *ctx, + struct gl_framebuffer *fb, + struct gl_renderbuffer *rb) +{ + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + if (fb->Attachment[i].Renderbuffer == rb) { + _mesa_remove_attachment(ctx, &fb->Attachment[i]); + } + } + invalidate_framebuffer(fb); +} + + +void GLAPIENTRY +_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (renderbuffers[i] > 0) { + struct gl_renderbuffer *rb; + rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]); + if (rb) { + /* check if deleting currently bound renderbuffer object */ + if (rb == ctx->CurrentRenderbuffer) { + /* bind default */ + ASSERT(rb->RefCount >= 2); + _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0); + } + + if (ctx->DrawBuffer->Name) { + detach_renderbuffer(ctx, ctx->DrawBuffer, rb); + } + if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) { + detach_renderbuffer(ctx, ctx->ReadBuffer, rb); + } + + /* Remove from hash table immediately, to free the ID. + * But the object will not be freed until it's no longer + * referenced anywhere else. + */ + _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); + + if (rb != &DummyRenderbuffer) { + /* no longer referenced by hash table */ + _mesa_reference_renderbuffer(&rb, NULL); + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)"); + return; + } + + if (!renderbuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + renderbuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + +/** + * Given an internal format token for a render buffer, return the + * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, + * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE, + * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc). + * + * This is similar to _mesa_base_tex_format() but the set of valid + * internal formats is different. + * + * Note that even if a format is determined to be legal here, validation + * of the FBO may fail if the format is not supported by the driver/GPU. + * + * \param internalFormat as passed to glRenderbufferStorage() + * \return the base internal format, or 0 if internalFormat is illegal + */ +GLenum +_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat) +{ + /* + * Notes: some formats such as alpha, luminance, etc. were added + * with GL_ARB_framebuffer_object. + */ + switch (internalFormat) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; + case GL_LUMINANCE: + case GL_LUMINANCE4: + case GL_LUMINANCE8: + case GL_LUMINANCE12: + case GL_LUMINANCE16: + return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; + case GL_LUMINANCE_ALPHA: + case GL_LUMINANCE4_ALPHA4: + case GL_LUMINANCE6_ALPHA2: + case GL_LUMINANCE8_ALPHA8: + case GL_LUMINANCE12_ALPHA4: + case GL_LUMINANCE12_ALPHA12: + case GL_LUMINANCE16_ALPHA16: + return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; + case GL_INTENSITY: + case GL_INTENSITY4: + case GL_INTENSITY8: + case GL_INTENSITY12: + case GL_INTENSITY16: + return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + case GL_SRGB8_EXT: + return GL_RGB; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + case GL_SRGB8_ALPHA8_EXT: + return GL_RGBA; + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + return GL_STENCIL_INDEX; + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return GL_DEPTH_COMPONENT; + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil) + return GL_DEPTH_STENCIL_EXT; + else + return 0; + case GL_RED: + case GL_R8: + case GL_R16: + return ctx->Extensions.ARB_texture_rg ? GL_RED : 0; + case GL_RG: + case GL_RG8: + case GL_RG16: + return ctx->Extensions.ARB_texture_rg ? GL_RG : 0; + /* signed normalized texture formats */ + case GL_RED_SNORM: + case GL_R8_SNORM: + case GL_R16_SNORM: + return ctx->Extensions.EXT_texture_snorm ? GL_RED : 0; + case GL_RG_SNORM: + case GL_RG8_SNORM: + case GL_RG16_SNORM: + return ctx->Extensions.EXT_texture_snorm ? GL_RG : 0; + case GL_RGB_SNORM: + case GL_RGB8_SNORM: + case GL_RGB16_SNORM: + return ctx->Extensions.EXT_texture_snorm ? GL_RGB : 0; + case GL_RGBA_SNORM: + case GL_RGBA8_SNORM: + case GL_RGBA16_SNORM: + return ctx->Extensions.EXT_texture_snorm ? GL_RGBA : 0; + case GL_ALPHA_SNORM: + case GL_ALPHA8_SNORM: + case GL_ALPHA16_SNORM: + return ctx->Extensions.EXT_texture_snorm && + ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0; + case GL_LUMINANCE_SNORM: + case GL_LUMINANCE8_SNORM: + case GL_LUMINANCE16_SNORM: + return ctx->Extensions.EXT_texture_snorm && + ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0; + case GL_LUMINANCE_ALPHA_SNORM: + case GL_LUMINANCE8_ALPHA8_SNORM: + case GL_LUMINANCE16_ALPHA16_SNORM: + return ctx->Extensions.EXT_texture_snorm && + ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0; + case GL_INTENSITY_SNORM: + case GL_INTENSITY8_SNORM: + case GL_INTENSITY16_SNORM: + return ctx->Extensions.EXT_texture_snorm && + ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0; + /* XXX add floating point and integer formats eventually */ + default: + return 0; + } +} + + +/** + * Invalidate a renderbuffer attachment. Called from _mesa_HashWalk(). + */ +static void +invalidate_rb(GLuint key, void *data, void *userData) +{ + struct gl_framebuffer *fb = (struct gl_framebuffer *) data; + struct gl_renderbuffer *rb = (struct gl_renderbuffer *) userData; + + /* If this is a user-created FBO */ + if (fb->Name) { + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + if (att->Type == GL_RENDERBUFFER && + att->Renderbuffer == rb) { + /* Mark fb status as indeterminate to force re-validation */ + fb->_Status = 0; + return; + } + } + } +} + + +/** sentinal value, see below */ +#define NO_SAMPLES 1000 + + +/** + * Helper function used by _mesa_RenderbufferStorageEXT() and + * _mesa_RenderbufferStorageMultisample(). + * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT(). + */ +static void +renderbuffer_storage(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height, GLsizei samples) +{ + const char *func = samples == NO_SAMPLES ? + "glRenderbufferStorage" : "RenderbufferStorageMultisample"; + struct gl_renderbuffer *rb; + GLenum baseFormat; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func); + return; + } + + baseFormat = _mesa_base_fbo_format(ctx, internalFormat); + if (baseFormat == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func); + return; + } + + if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func); + return; + } + + if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func); + return; + } + + if (samples == NO_SAMPLES) { + /* NumSamples == 0 indicates non-multisampling */ + samples = 0; + } + else if (samples > (GLsizei) ctx->Const.MaxSamples) { + /* note: driver may choose to use more samples than what's requested */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (rb->InternalFormat == internalFormat && + rb->Width == (GLuint) width && + rb->Height == (GLuint) height) { + /* no change in allocation needed */ + return; + } + + /* These MUST get set by the AllocStorage func */ + rb->Format = MESA_FORMAT_NONE; + rb->NumSamples = samples; + + /* Now allocate the storage */ + ASSERT(rb->AllocStorage); + if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { + /* No error - check/set fields now */ + assert(rb->Format != MESA_FORMAT_NONE); + assert(rb->Width == (GLuint) width); + assert(rb->Height == (GLuint) height); + rb->InternalFormat = internalFormat; + rb->_BaseFormat = baseFormat; + assert(rb->_BaseFormat != 0); + } + else { + /* Probably ran out of memory - clear the fields */ + rb->Width = 0; + rb->Height = 0; + rb->Format = MESA_FORMAT_NONE; + rb->InternalFormat = GL_NONE; + rb->_BaseFormat = GL_NONE; + rb->NumSamples = 0; + } + + /* Invalidate the framebuffers the renderbuffer is attached in. */ + if (rb->AttachedAnytime) { + _mesa_HashWalk(ctx->Shared->FrameBuffers, invalidate_rb, rb); + } +} + + +#if FEATURE_OES_EGL_image +void GLAPIENTRY +_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) +{ + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.OES_EGL_image) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glEGLImageTargetRenderbufferStorageOES(unsupported)"); + return; + } + + if (target != GL_RENDERBUFFER) { + _mesa_error(ctx, GL_INVALID_ENUM, + "EGLImageTargetRenderbufferStorageOES"); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "EGLImageTargetRenderbufferStorageOES"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image); +} +#endif + + +/** + * Helper function for _mesa_GetRenderbufferParameterivEXT() and + * _mesa_GetFramebufferAttachmentParameterivEXT() + * We have to be careful to respect the base format. For example, if a + * renderbuffer/texture was created with internalFormat=GL_RGB but the + * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE + * we need to return zero. + */ +static GLint +get_component_bits(GLenum pname, GLenum baseFormat, gl_format format) +{ + switch (pname) { + case GL_RENDERBUFFER_RED_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA || + baseFormat == GL_RG || baseFormat == GL_RED) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: + if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA || + baseFormat == GL_LUMINANCE_ALPHA) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: + if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: + if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL) + return _mesa_get_format_bits(format, pname); + else + return 0; + default: + return 0; + } +} + + + +void GLAPIENTRY +_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height) +{ + /* GL_ARB_fbo says calling this function is equivalent to calling + * glRenderbufferStorageMultisample() with samples=0. We pass in + * a token value here just for error reporting purposes. + */ + renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES); +} + + +void GLAPIENTRY +_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples, + GLenum internalFormat, + GLsizei width, GLsizei height) +{ + renderbuffer_storage(target, internalFormat, width, height, samples); +} + + +/** + * OpenGL ES version of glRenderBufferStorage. + */ +void GLAPIENTRY +_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height) +{ + switch (internalFormat) { + case GL_RGB565: + /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */ + /* choose a closest format */ + internalFormat = GL_RGB5; + break; + default: + break; + } + + renderbuffer_storage(target, internalFormat, width, height, 0); +} + + +void GLAPIENTRY +_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) +{ + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetRenderbufferParameterivEXT"); + return; + } + + /* No need to flush here since we're just quering state which is + * not effected by rendering. + */ + + switch (pname) { + case GL_RENDERBUFFER_WIDTH_EXT: + *params = rb->Width; + return; + case GL_RENDERBUFFER_HEIGHT_EXT: + *params = rb->Height; + return; + case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT: + *params = rb->InternalFormat; + return; + case GL_RENDERBUFFER_RED_SIZE_EXT: + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + *params = get_component_bits(pname, rb->_BaseFormat, rb->Format); + break; + case GL_RENDERBUFFER_SAMPLES: + if (ctx->Extensions.ARB_framebuffer_object) { + *params = rb->NumSamples; + break; + } + /* fallthrough */ + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } +} + + +GLboolean GLAPIENTRY +_mesa_IsFramebufferEXT(GLuint framebuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (framebuffer) { + struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer); + if (rb != NULL && rb != &DummyFramebuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +/** + * Check if any of the attachments of the given framebuffer are textures + * (render to texture). Call ctx->Driver.RenderTexture() for such + * attachments. + */ +static void +check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) +{ + GLuint i; + ASSERT(ctx->Driver.RenderTexture); + + if (fb->Name == 0) + return; /* can't render to texture with winsys framebuffers */ + + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + if (att->Texture && _mesa_get_attachment_teximage(att)) { + ctx->Driver.RenderTexture(ctx, fb, att); + } + } +} + + +/** + * Examine all the framebuffer's attachments to see if any are textures. + * If so, call ctx->Driver.FinishRenderTexture() for each texture to + * notify the device driver that the texture image may have changed. + */ +static void +check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) +{ + if (fb->Name == 0) + return; /* can't render to texture with winsys framebuffers */ + + if (ctx->Driver.FinishRenderTexture) { + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + if (att->Texture && att->Renderbuffer) { + ctx->Driver.FinishRenderTexture(ctx, att); + } + } + } +} + + +void GLAPIENTRY +_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) +{ + struct gl_framebuffer *newDrawFb, *newReadFb; + struct gl_framebuffer *oldDrawFb, *oldReadFb; + GLboolean bindReadBuf, bindDrawBuf; + GET_CURRENT_CONTEXT(ctx); + +#ifdef DEBUG + if (ctx->Extensions.ARB_framebuffer_object) { + ASSERT(ctx->Extensions.EXT_framebuffer_object); + ASSERT(ctx->Extensions.EXT_framebuffer_blit); + } +#endif + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBindFramebufferEXT(unsupported)"); + return; + } + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_FALSE; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_FALSE; + bindReadBuf = GL_TRUE; + break; +#endif + case GL_FRAMEBUFFER_EXT: + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_TRUE; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + + if (framebuffer) { + /* Binding a user-created framebuffer object */ + newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer); + if (newDrawFb == &DummyFramebuffer) { + /* ID was reserved, but no real framebuffer object made yet */ + newDrawFb = NULL; + } + else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) { + /* All FBO IDs must be Gen'd */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); + return; + } + + if (!newDrawFb) { + /* create new framebuffer object */ + newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); + if (!newDrawFb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); + return; + } + _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb); + } + newReadFb = newDrawFb; + } + else { + /* Binding the window system framebuffer (which was originally set + * with MakeCurrent). + */ + newDrawFb = ctx->WinSysDrawBuffer; + newReadFb = ctx->WinSysReadBuffer; + } + + ASSERT(newDrawFb); + ASSERT(newDrawFb != &DummyFramebuffer); + + /* save pointers to current/old framebuffers */ + oldDrawFb = ctx->DrawBuffer; + oldReadFb = ctx->ReadBuffer; + + /* check if really changing bindings */ + if (oldDrawFb == newDrawFb) + bindDrawBuf = GL_FALSE; + if (oldReadFb == newReadFb) + bindReadBuf = GL_FALSE; + + /* + * OK, now bind the new Draw/Read framebuffers, if they're changing. + * + * We also check if we're beginning and/or ending render-to-texture. + * When a framebuffer with texture attachments is unbound, call + * ctx->Driver.FinishRenderTexture(). + * When a framebuffer with texture attachments is bound, call + * ctx->Driver.RenderTexture(). + * + * Note that if the ReadBuffer has texture attachments we don't consider + * that a render-to-texture case. + */ + if (bindReadBuf) { + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + /* check if old readbuffer was render-to-texture */ + check_end_texture_render(ctx, oldReadFb); + + _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb); + } + + if (bindDrawBuf) { + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + /* check if old read/draw buffers were render-to-texture */ + if (!bindReadBuf) + check_end_texture_render(ctx, oldReadFb); + + if (oldDrawFb != oldReadFb) + check_end_texture_render(ctx, oldDrawFb); + + /* check if newly bound framebuffer has any texture attachments */ + check_begin_texture_render(ctx, newDrawFb); + + _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb); + } + + if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) { + ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb); + } +} + + +void GLAPIENTRY +_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (framebuffers[i] > 0) { + struct gl_framebuffer *fb; + fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]); + if (fb) { + ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]); + + /* check if deleting currently bound framebuffer object */ + if (ctx->Extensions.EXT_framebuffer_blit) { + /* separate draw/read binding points */ + if (fb == ctx->DrawBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0); + } + if (fb == ctx->ReadBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0); + } + } + else { + /* only one binding point for read/draw buffers */ + if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + } + } + + /* remove from hash table immediately, to free the ID */ + _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]); + + if (fb != &DummyFramebuffer) { + /* But the object will not be freed until it's no longer + * bound in any context. + */ + _mesa_reference_framebuffer(&fb, NULL); + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)"); + return; + } + + if (!framebuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + framebuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + + +GLenum GLAPIENTRY +_mesa_CheckFramebufferStatusEXT(GLenum target) +{ + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); + + buffer = get_framebuffer_target(ctx, target); + if (!buffer) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; + } + + if (buffer->Name == 0) { + /* The window system / default framebuffer is always complete */ + return GL_FRAMEBUFFER_COMPLETE_EXT; + } + + /* No need to flush here */ + + if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { + _mesa_test_framebuffer_completeness(ctx, buffer); + } + + return buffer->_Status; +} + + + +/** + * Common code called by glFramebufferTexture1D/2D/3DEXT(). + */ +static void +framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, + GLenum attachment, GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj = NULL; + struct gl_framebuffer *fb; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + fb = get_framebuffer_target(ctx, target); + if (!fb) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%sEXT(target=0x%x)", caller, target); + return; + } + + /* check framebuffer binding */ + if (fb->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT", caller); + return; + } + + + /* The textarget, level, and zoffset parameters are only validated if + * texture is non-zero. + */ + if (texture) { + GLboolean err = GL_TRUE; + + texObj = _mesa_lookup_texture(ctx, texture); + if (texObj != NULL) { + if (textarget == 0) { + /* XXX what's the purpose of this? */ + err = (texObj->Target != GL_TEXTURE_3D) && + (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) && + (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT); + } + else { + err = (texObj->Target == GL_TEXTURE_CUBE_MAP) + ? !IS_CUBE_FACE(textarget) + : (texObj->Target != textarget); + } + } + else { + /* can't render to a non-existant texture */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT(non existant texture)", + caller); + return; + } + + if (err) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT(texture target mismatch)", + caller); + return; + } + + if (texObj->Target == GL_TEXTURE_3D) { + const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + if (zoffset < 0 || zoffset >= maxSize) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(zoffset)", caller); + return; + } + } + else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) || + (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) { + if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(layer)", caller); + return; + } + } + + if ((level < 0) || + (level >= _mesa_max_texture_levels(ctx, texObj->Target))) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(level)", caller); + return; + } + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%sEXT(attachment)", caller); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + _glthread_LOCK_MUTEX(fb->Mutex); + if (texObj) { + _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, + level, zoffset); + /* Set the render-to-texture flag. We'll check this flag in + * glTexImage() and friends to determine if we need to revalidate + * any FBOs that might be rendering into this texture. + * This flag never gets cleared since it's non-trivial to determine + * when all FBOs might be done rendering to this texture. That's OK + * though since it's uncommon to render to a texture then repeatedly + * call glTexImage() to change images in the texture. + */ + texObj->_RenderToTexture = GL_TRUE; + } + else { + _mesa_remove_attachment(ctx, att); + } + + invalidate_framebuffer(fb); + + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + + +void GLAPIENTRY +_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && (textarget != GL_TEXTURE_1D)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture1DEXT(textarget)"); + return; + } + + framebuffer_texture(ctx, "1D", target, attachment, textarget, texture, + level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && + (textarget != GL_TEXTURE_2D) && + (textarget != GL_TEXTURE_RECTANGLE_ARB) && + (!IS_CUBE_FACE(textarget))) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture2DEXT(textarget=0x%x)", textarget); + return; + } + + framebuffer_texture(ctx, "2D", target, attachment, textarget, texture, + level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && (textarget != GL_TEXTURE_3D)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture3DEXT(textarget)"); + return; + } + + framebuffer_texture(ctx, "3D", target, attachment, textarget, texture, + level, zoffset); +} + + +void GLAPIENTRY +_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment, + GLuint texture, GLint level, GLint layer) +{ + GET_CURRENT_CONTEXT(ctx); + + framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, + level, layer); +} + + +void GLAPIENTRY +_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment, + GLenum renderbufferTarget, + GLuint renderbuffer) +{ + struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *fb; + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + fb = get_framebuffer_target(ctx, target); + if (!fb) { + _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)"); + return; + } + + if (renderbufferTarget != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(renderbufferTarget)"); + return; + } + + if (fb->Name == 0) { + /* Can't attach new renderbuffers to a window system framebuffer */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT"); + return; + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(invalid attachment %s)", + _mesa_lookup_enum_by_nr(attachment)); + return; + } + + if (renderbuffer) { + rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferRenderbufferEXT(non-existant" + " renderbuffer %u)", renderbuffer); + return; + } + else if (rb == &DummyRenderbuffer) { + /* This is what NVIDIA does */ + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferRenderbufferEXT(renderbuffer %u)", + renderbuffer); + return; + } + } + else { + /* remove renderbuffer attachment */ + rb = NULL; + } + + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT && + rb && rb->Format != MESA_FORMAT_NONE) { + /* make sure the renderbuffer is a depth/stencil format */ + const GLenum baseFormat = _mesa_get_format_base_format(rb->Format); + if (baseFormat != GL_DEPTH_STENCIL) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferRenderbufferEXT(renderbuffer" + " is not DEPTH_STENCIL format)"); + return; + } + } + + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + assert(ctx->Driver.FramebufferRenderbuffer); + ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb); + + /* Some subsequent GL commands may depend on the framebuffer's visual + * after the binding is updated. Update visual info now. + */ + _mesa_update_framebuffer_visual(ctx, fb); +} + + +void GLAPIENTRY +_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, + GLenum pname, GLint *params) +{ + const struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + buffer = get_framebuffer_target(ctx, target); + if (!buffer) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + + if (buffer->Name == 0) { + /* the default / window-system FBO */ + att = _mesa_get_fb0_attachment(ctx, buffer, attachment); + } + else { + /* user-created framebuffer FBO */ + att = _mesa_get_attachment(ctx, buffer, attachment); + } + + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(attachment)"); + return; + } + + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { + /* the depth and stencil attachments must point to the same buffer */ + const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt; + depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT); + stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT); + if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL" + " attachments differ)"); + return; + } + } + + /* No need to flush here */ + + switch (pname) { + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT: + *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type; + return; + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT: + if (att->Type == GL_RENDERBUFFER_EXT) { + *params = att->Renderbuffer->Name; + } + else if (att->Type == GL_TEXTURE) { + *params = att->Texture->Name; + } + else { + assert(att->Type == GL_NONE); + *params = 0; + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT: + if (att->Type == GL_TEXTURE) { + *params = att->TextureLevel; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT: + if (att->Type == GL_TEXTURE) { + if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) { + *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace; + } + else { + *params = 0; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: + if (att->Type == GL_TEXTURE) { + if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) { + *params = att->Zoffset; + } + else { + *params = 0; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + else { + if (ctx->Extensions.EXT_framebuffer_sRGB && ctx->Const.sRGBCapable) { + *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format); + } + else { + /* According to ARB_framebuffer_sRGB, we should return LINEAR + * if the sRGB conversion is unsupported. */ + *params = GL_LINEAR; + } + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + return; + } + else { + gl_format format = att->Renderbuffer->Format; + if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) { + /* special cases */ + *params = GL_INDEX; + } + else { + *params = _mesa_get_format_datatype(format); + } + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + else if (att->Texture) { + const struct gl_texture_image *texImage = + _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target, + att->TextureLevel); + if (texImage) { + *params = get_component_bits(pname, texImage->_BaseFormat, + texImage->TexFormat); + } + else { + *params = 0; + } + } + else if (att->Renderbuffer) { + *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat, + att->Renderbuffer->Format); + } + else { + *params = 0; + } + return; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + return; + } +} + + +void GLAPIENTRY +_mesa_GenerateMipmapEXT(GLenum target) +{ + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + case GL_TEXTURE_CUBE_MAP: + /* OK, legal value */ + break; + default: + /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */ + _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)"); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + if (texObj->BaseLevel >= texObj->MaxLevel) { + /* nothing to do */ + return; + } + + if (texObj->Target == GL_TEXTURE_CUBE_MAP && + !_mesa_cube_complete(texObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGenerateMipmap(incomplete cube map)"); + return; + } + + _mesa_lock_texture(ctx, texObj); + if (target == GL_TEXTURE_CUBE_MAP) { + GLuint face; + for (face = 0; face < 6; face++) + ctx->Driver.GenerateMipmap(ctx, + GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face, + texObj); + } + else { + ctx->Driver.GenerateMipmap(ctx, target, texObj); + } + _mesa_unlock_texture(ctx, texObj); +} + + +#if FEATURE_EXT_framebuffer_blit + +static const struct gl_renderbuffer_attachment * +find_attachment(const struct gl_framebuffer *fb, + const struct gl_renderbuffer *rb) +{ + GLuint i; + for (i = 0; i < Elements(fb->Attachment); i++) { + if (fb->Attachment[i].Renderbuffer == rb) + return &fb->Attachment[i]; + } + return NULL; +} + + + +/** + * Blit rectangular region, optionally from one framebuffer to another. + * + * Note, if the src buffer is multisampled and the dest is not, this is + * when the samples must be resolved to a single color. + */ +void GLAPIENTRY +_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, + GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, + GLbitfield mask, GLenum filter) +{ + const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT | + GL_DEPTH_BUFFER_BIT | + GL_STENCIL_BUFFER_BIT); + const struct gl_framebuffer *readFb, *drawFb; + const struct gl_renderbuffer *colorReadRb, *colorDrawRb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, + "glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d, 0x%x, %s)\n", + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, _mesa_lookup_enum_by_nr(filter)); + + if (ctx->NewState) { + _mesa_update_state(ctx); + } + + readFb = ctx->ReadBuffer; + drawFb = ctx->DrawBuffer; + + if (!readFb || !drawFb) { + /* This will normally never happen but someday we may want to + * support MakeCurrent() with no drawables. + */ + return; + } + + /* check for complete framebuffers */ + if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT || + readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glBlitFramebufferEXT(incomplete draw/read buffers)"); + return; + } + + if (filter != GL_NEAREST && filter != GL_LINEAR) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)"); + return; + } + + if (mask & ~legalMaskBits) { + _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)"); + return; + } + + /* depth/stencil must be blitted with nearest filtering */ + if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) + && filter != GL_NEAREST) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter)"); + return; + } + + /* get color read/draw renderbuffers */ + if (mask & GL_COLOR_BUFFER_BIT) { + colorReadRb = readFb->_ColorReadBuffer; + colorDrawRb = drawFb->_ColorDrawBuffers[0]; + } + else { + colorReadRb = colorDrawRb = NULL; + } + + if (mask & GL_STENCIL_BUFFER_BIT) { + struct gl_renderbuffer *readRb = readFb->_StencilBuffer; + struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer; + if (!readRb || + !drawRb || + _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(stencil buffer size mismatch)"); + return; + } + } + + if (mask & GL_DEPTH_BUFFER_BIT) { + struct gl_renderbuffer *readRb = readFb->_DepthBuffer; + struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer; + if (!readRb || + !drawRb || + _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth buffer size mismatch)"); + return; + } + } + + if (readFb->Visual.samples > 0 && + drawFb->Visual.samples > 0 && + readFb->Visual.samples != drawFb->Visual.samples) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(mismatched samples"); + return; + } + + /* extra checks for multisample copies... */ + if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { + /* src and dest region sizes must be the same */ + if (srcX1 - srcX0 != dstX1 - dstX0 || + srcY1 - srcY0 != dstY1 - dstY0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(bad src/dst multisample region sizes)"); + return; + } + + /* color formats must match */ + if (colorReadRb && + colorDrawRb && + colorReadRb->Format != colorDrawRb->Format) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(bad src/dst multisample pixel formats)"); + return; + } + } + + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); + return; + } + + /* Debug code */ + if (DEBUG_BLIT) { + printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d," + " 0x%x, 0x%x)\n", + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, filter); + if (colorReadRb) { + const struct gl_renderbuffer_attachment *att; + + att = find_attachment(readFb, colorReadRb); + printf(" Src FBO %u RB %u (%dx%d) ", + readFb->Name, colorReadRb->Name, + colorReadRb->Width, colorReadRb->Height); + if (att && att->Texture) { + printf("Tex %u tgt 0x%x level %u face %u", + att->Texture->Name, + att->Texture->Target, + att->TextureLevel, + att->CubeMapFace); + } + printf("\n"); + + att = find_attachment(drawFb, colorDrawRb); + printf(" Dst FBO %u RB %u (%dx%d) ", + drawFb->Name, colorDrawRb->Name, + colorDrawRb->Width, colorDrawRb->Height); + if (att && att->Texture) { + printf("Tex %u tgt 0x%x level %u face %u", + att->Texture->Name, + att->Texture->Target, + att->TextureLevel, + att->CubeMapFace); + } + printf("\n"); + } + } + + ASSERT(ctx->Driver.BlitFramebuffer); + ctx->Driver.BlitFramebuffer(ctx, + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, filter); +} +#endif /* FEATURE_EXT_framebuffer_blit */ + +#if FEATURE_ARB_geometry_shader4 +void GLAPIENTRY +_mesa_FramebufferTextureARB(GLenum target, GLenum attachment, + GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTextureARB " + "not implemented!"); +} + +void GLAPIENTRY +_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment, + GLuint texture, GLint level, GLenum face) +{ + GET_CURRENT_CONTEXT(ctx); + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTextureFaceARB " + "not implemented!"); +} +#endif /* FEATURE_ARB_geometry_shader4 */ -- cgit v1.2.3