/* * 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 "fbobject.h" #include "framebuffer.h" #include "hash.h" #include "macros.h" #include "mipmap.h" #include "renderbuffer.h" #include "state.h" #include "teximage.h" #include "texobj.h" #include "texstore.h" #include "texstate.h" /** Set this to 1 to help debug FBO incompleteness problems */ #define DEBUG_FBO 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; #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(GLcontext *ctx) { DummyFramebuffer.Delete = delete_dummy_framebuffer; DummyRenderbuffer.Delete = delete_dummy_renderbuffer; } /** * Helper routine for getting a gl_renderbuffer. */ struct gl_renderbuffer * _mesa_lookup_renderbuffer(GLcontext *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(GLcontext *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" */ } /** * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding * gl_renderbuffer_attachment 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(GLcontext *ctx, struct gl_framebuffer *fb, GLenum attachment) { GLuint i; 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_ATTACHMENT_EXT: return &fb->Attachment[BUFFER_DEPTH]; 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(GLcontext *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(GLcontext *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); } else { /* new attachment */ _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; if (IS_CUBE_FACE(texTarget)) { att->CubeMapFace = texTarget - GL_TEXTURE_CUBE_MAP_POSITIVE_X; } else { att->CubeMapFace = 0; } 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(GLcontext *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(GLcontext *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); } } else { _mesa_remove_attachment(ctx, att); } invalidate_framebuffer(fb); _glthread_UNLOCK_MUTEX(fb->Mutex); } /** * 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 } /** * 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 GLcontext *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; 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"); _mesa_printf("texobj = %u\n", texObj->Name); _mesa_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; } if (format == GL_COLOR) { if (texImage->TexFormat->BaseFormat != GL_RGB && texImage->TexFormat->BaseFormat != GL_RGBA) { att_incomplete("bad format"); att->Complete = GL_FALSE; return; } if (texImage->TexFormat->TexelBytes == 0) { att_incomplete("compressed internalformat"); att->Complete = GL_FALSE; return; } } else if (format == GL_DEPTH) { if (texImage->TexFormat->BaseFormat == GL_DEPTH_COMPONENT) { /* OK */ } else if (ctx->Extensions.EXT_packed_depth_stencil && ctx->Extensions.ARB_depth_texture && texImage->TexFormat->BaseFormat == GL_DEPTH_STENCIL_EXT) { /* OK */ } else { att->Complete = GL_FALSE; att_incomplete("bad depth format"); return; } } else { ASSERT(format == GL_STENCIL); ASSERT(att->Renderbuffer->StencilBits); if (ctx->Extensions.EXT_packed_depth_stencil && ctx->Extensions.ARB_depth_texture && att->Renderbuffer->_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) { 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 (att->Renderbuffer->_BaseFormat != GL_RGB && att->Renderbuffer->_BaseFormat != GL_RGBA) { att_incomplete("bad renderbuffer color format"); att->Complete = GL_FALSE; return; } ASSERT(att->Renderbuffer->RedBits); ASSERT(att->Renderbuffer->GreenBits); ASSERT(att->Renderbuffer->BlueBits); } else if (format == GL_DEPTH) { if (att->Renderbuffer->_BaseFormat == GL_DEPTH_COMPONENT) { ASSERT(att->Renderbuffer->DepthBits); /* OK */ } else if (ctx->Extensions.EXT_packed_depth_stencil && att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) { ASSERT(att->Renderbuffer->DepthBits); /* OK */ } else { att_incomplete("bad renderbuffer depth format"); att->Complete = GL_FALSE; return; } } else { assert(format == GL_STENCIL); if (att->Renderbuffer->_BaseFormat == GL_STENCIL_INDEX) { ASSERT(att->Renderbuffer->StencilBits); /* OK */ } else if (ctx->Extensions.EXT_packed_depth_stencil && att->Renderbuffer->_BaseFormat == GL_DEPTH_STENCIL_EXT) { ASSERT(att->Renderbuffer->StencilBits); /* 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(GLcontext *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; /* * 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; numImages++; if (f != GL_RGB && f != GL_RGBA && f != GL_DEPTH_COMPONENT && f != GL_DEPTH_STENCIL_EXT) { 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; numImages++; } else { assert(att->Type == GL_NONE); continue; } if (numSamples < 0) { /* first buffer */ numSamples = att->Renderbuffer->NumSamples; } /* 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; } } } #ifndef FEATURE_OES_framebuffer_object /* 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; } } #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(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; } FLUSH_CURRENT(ctx, _NEW_BUFFERS); 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(GLcontext *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. * This is very similar to _mesa_base_tex_format() but the set of valid * internal formats is somewhat different. * * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT * GL_DEPTH_STENCIL_EXT or zero if error. */ GLenum _mesa_base_fbo_format(GLcontext *ctx, GLenum internalFormat) { switch (internalFormat) { 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: 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: 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; /* XXX add floating point formats eventually */ default: return 0; } } /** 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 > 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, 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->_ActualFormat = 0; rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = rb->IndexBits = rb->DepthBits = rb->StencilBits = 0; 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->_ActualFormat); assert(rb->Width == (GLuint) width); assert(rb->Height == (GLuint) height); assert(rb->RedBits || rb->GreenBits || rb->BlueBits || rb->AlphaBits || rb->DepthBits || rb->StencilBits || rb->IndexBits); rb->InternalFormat = internalFormat; rb->_BaseFormat = baseFormat; } else { /* Probably ran out of memory - clear the fields */ rb->Width = 0; rb->Height = 0; rb->InternalFormat = GL_NONE; rb->_ActualFormat = GL_NONE; rb->_BaseFormat = GL_NONE; rb->RedBits = rb->GreenBits = rb->BlueBits = rb->AlphaBits = rb->IndexBits = rb->DepthBits = rb->StencilBits = rb->NumSamples = 0; } /* test_framebuffer_completeness(ctx, fb); */ /* XXX if this renderbuffer is attached anywhere, invalidate attachment * points??? */ } 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); } 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; } FLUSH_VERTICES(ctx, _NEW_BUFFERS); 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: *params = rb->RedBits; break; case GL_RENDERBUFFER_GREEN_SIZE_EXT: *params = rb->GreenBits; break; case GL_RENDERBUFFER_BLUE_SIZE_EXT: *params = rb->BlueBits; break; case GL_RENDERBUFFER_ALPHA_SIZE_EXT: *params = rb->AlphaBits; break; case GL_RENDERBUFFER_DEPTH_SIZE_EXT: *params = rb->DepthBits; break; case GL_RENDERBUFFER_STENCIL_SIZE_EXT: *params = rb->StencilBits; 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; } static void check_begin_texture_render(GLcontext *ctx, struct gl_framebuffer *fb) { GLuint i; ASSERT(ctx->Driver.RenderTexture); for (i = 0; i < BUFFER_COUNT; i++) { struct gl_renderbuffer_attachment *att = fb->Attachment + i; struct gl_texture_object *texObj = att->Texture; if (texObj && att->Texture->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(GLcontext *ctx, struct gl_framebuffer *fb) { 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 *newFb, *newFbread; 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; } FLUSH_CURRENT(ctx, _NEW_BUFFERS); if (ctx->Driver.Flush) { ctx->Driver.Flush(ctx); } if (framebuffer) { /* Binding a user-created framebuffer object */ newFb = _mesa_lookup_framebuffer(ctx, framebuffer); if (newFb == &DummyFramebuffer) { /* ID was reserved, but no real framebuffer object made yet */ newFb = NULL; } else if (!newFb && ctx->Extensions.ARB_framebuffer_object) { /* All FBO IDs must be Gen'd */ _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); return; } if (!newFb) { /* create new framebuffer object */ newFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); if (!newFb) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); return; } _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newFb); } newFbread = newFb; } else { /* Binding the window system framebuffer (which was originally set * with MakeCurrent). */ newFb = ctx->WinSysDrawBuffer; newFbread = ctx->WinSysReadBuffer; } ASSERT(newFb); ASSERT(newFb != &DummyFramebuffer); /* * OK, now bind the new Draw/Read framebuffers, if they're changing. */ if (bindReadBuf) { if (ctx->ReadBuffer == newFbread) bindReadBuf = GL_FALSE; /* no change */ else _mesa_reference_framebuffer(&ctx->ReadBuffer, newFbread); } if (bindDrawBuf) { /* check if old FB had any texture attachments */ if (ctx->DrawBuffer->Name != 0) { check_end_texture_render(ctx, ctx->DrawBuffer); } if (ctx->DrawBuffer == newFb) bindDrawBuf = GL_FALSE; /* no change */ else _mesa_reference_framebuffer(&ctx->DrawBuffer, newFb); if (newFb->Name != 0) { /* check if newly bound framebuffer has any texture attachments */ check_begin_texture_render(ctx, newFb); } } if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) { ctx->Driver.BindFramebuffer(ctx, target, newFb, newFbread); } } void GLAPIENTRY _mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) { GLint i; GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); FLUSH_CURRENT(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 (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); } /* 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); switch (target) { #if FEATURE_EXT_framebuffer_blit case GL_DRAW_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); return 0; } buffer = ctx->DrawBuffer; break; case GL_READ_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); return 0; } buffer = ctx->ReadBuffer; break; #endif case GL_FRAMEBUFFER_EXT: buffer = ctx->DrawBuffer; break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */ } if (buffer->Name == 0) { /* The window system / default framebuffer is always complete */ return GL_FRAMEBUFFER_COMPLETE_EXT; } FLUSH_VERTICES(ctx, _NEW_BUFFERS); 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(GLcontext *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; GLboolean error = GL_FALSE; ASSERT_OUTSIDE_BEGIN_END(ctx); switch (target) { case GL_READ_FRAMEBUFFER_EXT: error = !ctx->Extensions.EXT_framebuffer_blit; fb = ctx->ReadBuffer; break; case GL_DRAW_FRAMEBUFFER_EXT: error = !ctx->Extensions.EXT_framebuffer_blit; /* fall-through */ case GL_FRAMEBUFFER_EXT: fb = ctx->DrawBuffer; break; default: error = GL_TRUE; } if (error) { _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferTexture%sEXT(target=0x%x)", caller, target); return; } ASSERT(fb); /* 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) { 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); } } 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; } if (texObj && attachment == GL_DEPTH_STENCIL_ATTACHMENT) { /* the texture format must be depth+stencil */ const struct gl_texture_image *texImg; texImg = texObj->Image[0][texObj->BaseLevel]; if (!texImg || texImg->_BaseFormat != GL_DEPTH_STENCIL) { _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferTexture%sEXT(texture is not" " DEPTH_STENCIL format)", caller); return; } } FLUSH_CURRENT(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); switch (target) { #if FEATURE_EXT_framebuffer_blit case GL_DRAW_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)"); return; } fb = ctx->DrawBuffer; break; case GL_READ_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glFramebufferRenderbufferEXT(target)"); return; } fb = ctx->ReadBuffer; break; #endif case GL_FRAMEBUFFER_EXT: fb = ctx->DrawBuffer; break; default: _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(attachment)"); return; } if (renderbuffer) { rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); if (!rb) { _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT(renderbuffer)"); return; } } else { /* remove renderbuffer attachment */ rb = NULL; } if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { /* make sure the renderbuffer is a depth/stencil format */ if (rb->_BaseFormat != GL_DEPTH_STENCIL) { _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT(renderbuffer" " is not DEPTH_STENCIL format)"); return; } } FLUSH_CURRENT(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(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); switch (target) { #if FEATURE_EXT_framebuffer_blit case GL_DRAW_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(target)"); return; } buffer = ctx->DrawBuffer; break; case GL_READ_FRAMEBUFFER_EXT: if (!ctx->Extensions.EXT_framebuffer_blit) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(target)"); return; } buffer = ctx->ReadBuffer; break; #endif case GL_FRAMEBUFFER_EXT: buffer = ctx->DrawBuffer; break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(target)"); return; } if (buffer->Name == 0) { _mesa_error(ctx, GL_INVALID_OPERATION, "glGetFramebufferAttachmentParameterivEXT"); return; } 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; } } FLUSH_CURRENT(ctx, _NEW_BUFFERS); switch (pname) { case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT: *params = 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 { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } 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 { *params = att->Renderbuffer->ColorEncoding; } return; case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); return; } else { *params = att->Renderbuffer->ComponentType; } return; case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->RedBits; } return; case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->GreenBits; } return; case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->BlueBits; } return; case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->AlphaBits; } return; case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->DepthBits; } return; case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: if (!ctx->Extensions.ARB_framebuffer_object) { _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); } else { *params = att->Renderbuffer->StencilBits; } return; default: _mesa_error(ctx, GL_INVALID_ENUM, "glGetFramebufferAttachmentParameterivEXT(pname)"); return; } } void GLAPIENTRY _mesa_GenerateMipmapEXT(GLenum target) { struct gl_texture_unit *texUnit; 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: _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)"); return; } texUnit = _mesa_get_current_tex_unit(ctx); texObj = _mesa_select_tex_object(ctx, texUnit, target); _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 /** * 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 (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 || readRb->StencilBits != drawRb->StencilBits) { _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 || readRb->DepthBits != drawRb->DepthBits) { _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->_ActualFormat != colorDrawRb->_ActualFormat) { _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; } ASSERT(ctx->Driver.BlitFramebuffer); ctx->Driver.BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); } #endif /* FEATURE_EXT_framebuffer_blit */