| // |
| // Copyright 2002 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // Framebuffer.cpp: Implements the gl::Framebuffer class. Implements GL framebuffer |
| // objects and related functionality. [OpenGL ES 2.0.24] section 4.4 page 105. |
| |
| #include "libANGLE/Framebuffer.h" |
| |
| #include "common/Optional.h" |
| #include "common/bitset_utils.h" |
| #include "common/utilities.h" |
| #include "libANGLE/Config.h" |
| #include "libANGLE/Context.h" |
| #include "libANGLE/Display.h" |
| #include "libANGLE/FramebufferAttachment.h" |
| #include "libANGLE/Renderbuffer.h" |
| #include "libANGLE/Surface.h" |
| #include "libANGLE/Texture.h" |
| #include "libANGLE/angletypes.h" |
| #include "libANGLE/formatutils.h" |
| #include "libANGLE/renderer/ContextImpl.h" |
| #include "libANGLE/renderer/FramebufferImpl.h" |
| #include "libANGLE/renderer/GLImplFactory.h" |
| #include "libANGLE/renderer/RenderbufferImpl.h" |
| #include "libANGLE/renderer/SurfaceImpl.h" |
| |
| using namespace angle; |
| |
| namespace gl |
| { |
| |
| namespace |
| { |
| |
| bool CheckMultiviewStateMatchesForCompleteness(const FramebufferAttachment *firstAttachment, |
| const FramebufferAttachment *secondAttachment) |
| { |
| ASSERT(firstAttachment && secondAttachment); |
| ASSERT(firstAttachment->isAttached() && secondAttachment->isAttached()); |
| |
| if (firstAttachment->getNumViews() != secondAttachment->getNumViews()) |
| { |
| return false; |
| } |
| if (firstAttachment->getBaseViewIndex() != secondAttachment->getBaseViewIndex()) |
| { |
| return false; |
| } |
| if (firstAttachment->isMultiview() != secondAttachment->isMultiview()) |
| { |
| return false; |
| } |
| return true; |
| } |
| |
| bool CheckAttachmentCompleteness(const Context *context, const FramebufferAttachment &attachment) |
| { |
| ASSERT(attachment.isAttached()); |
| |
| const Extents &size = attachment.getSize(); |
| if (size.width == 0 || size.height == 0) |
| { |
| return false; |
| } |
| |
| if (!attachment.isRenderable(context)) |
| { |
| return false; |
| } |
| |
| if (attachment.type() == GL_TEXTURE) |
| { |
| // [EXT_geometry_shader] Section 9.4.1, "Framebuffer Completeness" |
| // If <image> is a three-dimensional texture or a two-dimensional array texture and the |
| // attachment is not layered, the selected layer is less than the depth or layer count, |
| // respectively, of the texture. |
| if (!attachment.isLayered()) |
| { |
| if (attachment.layer() >= size.depth) |
| { |
| return false; |
| } |
| } |
| // If <image> is a three-dimensional texture or a two-dimensional array texture and the |
| // attachment is layered, the depth or layer count, respectively, of the texture is less |
| // than or equal to the value of MAX_FRAMEBUFFER_LAYERS_EXT. |
| else |
| { |
| if (static_cast<GLuint>(size.depth) >= context->getCaps().maxFramebufferLayers) |
| { |
| return false; |
| } |
| } |
| |
| // ES3 specifies that cube map texture attachments must be cube complete. |
| // This language is missing from the ES2 spec, but we enforce it here because some |
| // desktop OpenGL drivers also enforce this validation. |
| // TODO(jmadill): Check if OpenGL ES2 drivers enforce cube completeness. |
| const Texture *texture = attachment.getTexture(); |
| ASSERT(texture); |
| if (texture->getType() == TextureType::CubeMap && |
| !texture->getTextureState().isCubeComplete()) |
| { |
| return false; |
| } |
| |
| if (!texture->getImmutableFormat()) |
| { |
| GLuint attachmentMipLevel = static_cast<GLuint>(attachment.mipLevel()); |
| |
| // From the ES 3.0 spec, pg 213: |
| // If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is TEXTURE and the value of |
| // FRAMEBUFFER_ATTACHMENT_OBJECT_NAME does not name an immutable-format texture, |
| // then the value of FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL must be in the |
| // range[levelbase, q], where levelbase is the value of TEXTURE_BASE_LEVEL and q is |
| // the effective maximum texture level defined in the Mipmapping discussion of |
| // section 3.8.10.4. |
| if (attachmentMipLevel < texture->getBaseLevel() || |
| attachmentMipLevel > texture->getMipmapMaxLevel()) |
| { |
| return false; |
| } |
| |
| // Form the ES 3.0 spec, pg 213/214: |
| // If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is TEXTURE and the value of |
| // FRAMEBUFFER_ATTACHMENT_OBJECT_NAME does not name an immutable-format texture and |
| // the value of FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL is not levelbase, then the |
| // texture must be mipmap complete, and if FRAMEBUFFER_ATTACHMENT_OBJECT_NAME names |
| // a cubemap texture, the texture must also be cube complete. |
| if (attachmentMipLevel != texture->getBaseLevel() && !texture->isMipmapComplete()) |
| { |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| bool CheckAttachmentSampleCounts(const Context *context, |
| GLsizei currAttachmentSamples, |
| GLsizei samples, |
| bool colorAttachment) |
| { |
| if (currAttachmentSamples != samples) |
| { |
| if (colorAttachment) |
| { |
| // APPLE_framebuffer_multisample, which EXT_draw_buffers refers to, requires that |
| // all color attachments have the same number of samples for the FBO to be complete. |
| return false; |
| } |
| else |
| { |
| // CHROMIUM_framebuffer_mixed_samples allows a framebuffer to be considered complete |
| // when its depth or stencil samples are a multiple of the number of color samples. |
| if (!context->getExtensions().framebufferMixedSamples) |
| { |
| return false; |
| } |
| |
| if ((currAttachmentSamples % std::max(samples, 1)) != 0) |
| { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| bool CheckAttachmentSampleCompleteness(const Context *context, |
| const FramebufferAttachment &attachment, |
| bool colorAttachment, |
| Optional<int> *samples, |
| Optional<bool> *fixedSampleLocations, |
| Optional<int> *renderToTextureSamples) |
| { |
| ASSERT(attachment.isAttached()); |
| |
| if (attachment.type() == GL_TEXTURE) |
| { |
| const Texture *texture = attachment.getTexture(); |
| ASSERT(texture); |
| GLenum internalFormat = attachment.getFormat().info->internalFormat; |
| const TextureCaps &formatCaps = context->getTextureCaps().get(internalFormat); |
| if (static_cast<GLuint>(attachment.getSamples()) > formatCaps.getMaxSamples()) |
| { |
| return false; |
| } |
| |
| const ImageIndex &attachmentImageIndex = attachment.getTextureImageIndex(); |
| bool fixedSampleloc = texture->getAttachmentFixedSampleLocations(attachmentImageIndex); |
| if (fixedSampleLocations->valid() && fixedSampleloc != fixedSampleLocations->value()) |
| { |
| return false; |
| } |
| else |
| { |
| *fixedSampleLocations = fixedSampleloc; |
| } |
| } |
| |
| if (renderToTextureSamples->valid()) |
| { |
| // Only check against RenderToTextureSamples if they actually exist. |
| if (renderToTextureSamples->value() != |
| FramebufferAttachment::kDefaultRenderToTextureSamples) |
| { |
| if (!CheckAttachmentSampleCounts(context, attachment.getRenderToTextureSamples(), |
| renderToTextureSamples->value(), colorAttachment)) |
| { |
| return false; |
| } |
| } |
| } |
| else |
| { |
| *renderToTextureSamples = attachment.getRenderToTextureSamples(); |
| } |
| |
| if (samples->valid()) |
| { |
| // RenderToTextureSamples takes precedence if they exist. |
| if (renderToTextureSamples->value() == |
| FramebufferAttachment::kDefaultRenderToTextureSamples) |
| { |
| if (!CheckAttachmentSampleCounts(context, attachment.getSamples(), samples->value(), |
| colorAttachment)) |
| { |
| return false; |
| } |
| } |
| } |
| else |
| { |
| *samples = attachment.getSamples(); |
| } |
| |
| return true; |
| } |
| |
| // Needed to index into the attachment arrays/bitsets. |
| static_assert(static_cast<size_t>(IMPLEMENTATION_MAX_FRAMEBUFFER_ATTACHMENTS) == |
| Framebuffer::DIRTY_BIT_COLOR_ATTACHMENT_MAX, |
| "Framebuffer Dirty bit mismatch"); |
| static_assert(static_cast<size_t>(IMPLEMENTATION_MAX_FRAMEBUFFER_ATTACHMENTS) == |
| Framebuffer::DIRTY_BIT_DEPTH_ATTACHMENT, |
| "Framebuffer Dirty bit mismatch"); |
| static_assert(static_cast<size_t>(IMPLEMENTATION_MAX_FRAMEBUFFER_ATTACHMENTS + 1) == |
| Framebuffer::DIRTY_BIT_STENCIL_ATTACHMENT, |
| "Framebuffer Dirty bit mismatch"); |
| |
| angle::Result InitAttachment(const Context *context, FramebufferAttachment *attachment) |
| { |
| ASSERT(attachment->isAttached()); |
| if (attachment->initState() == InitState::MayNeedInit) |
| { |
| ANGLE_TRY(attachment->initializeContents(context)); |
| } |
| return angle::Result::Continue; |
| } |
| |
| bool IsColorMaskedOut(const BlendState &blend) |
| { |
| return (!blend.colorMaskRed && !blend.colorMaskGreen && !blend.colorMaskBlue && |
| !blend.colorMaskAlpha); |
| } |
| |
| bool IsDepthMaskedOut(const DepthStencilState &depthStencil) |
| { |
| return !depthStencil.depthMask; |
| } |
| |
| bool IsStencilMaskedOut(const DepthStencilState &depthStencil) |
| { |
| return ((depthStencil.stencilMask & depthStencil.stencilWritemask) == 0); |
| } |
| |
| bool IsClearBufferMaskedOut(const Context *context, GLenum buffer) |
| { |
| switch (buffer) |
| { |
| case GL_COLOR: |
| return IsColorMaskedOut(context->getState().getBlendState()); |
| case GL_DEPTH: |
| return IsDepthMaskedOut(context->getState().getDepthStencilState()); |
| case GL_STENCIL: |
| return IsStencilMaskedOut(context->getState().getDepthStencilState()); |
| case GL_DEPTH_STENCIL: |
| return IsDepthMaskedOut(context->getState().getDepthStencilState()) && |
| IsStencilMaskedOut(context->getState().getDepthStencilState()); |
| default: |
| UNREACHABLE(); |
| return true; |
| } |
| } |
| |
| } // anonymous namespace |
| |
| // This constructor is only used for default framebuffers. |
| FramebufferState::FramebufferState() |
| : mId(Framebuffer::kDefaultDrawFramebufferHandle), |
| mLabel(), |
| mColorAttachments(1), |
| mDrawBufferStates(1, GL_BACK), |
| mReadBufferState(GL_BACK), |
| mDrawBufferTypeMask(), |
| mDefaultWidth(0), |
| mDefaultHeight(0), |
| mDefaultSamples(0), |
| mDefaultFixedSampleLocations(GL_FALSE), |
| mDefaultLayers(0), |
| mWebGLDepthStencilConsistent(true), |
| mDefaultFramebufferReadAttachmentInitialized(false) |
| { |
| ASSERT(mDrawBufferStates.size() > 0); |
| mEnabledDrawBuffers.set(0); |
| } |
| |
| FramebufferState::FramebufferState(const Caps &caps, FramebufferID id) |
| : mId(id), |
| mLabel(), |
| mColorAttachments(caps.maxColorAttachments), |
| mDrawBufferStates(caps.maxDrawBuffers, GL_NONE), |
| mReadBufferState(GL_COLOR_ATTACHMENT0_EXT), |
| mDrawBufferTypeMask(), |
| mDefaultWidth(0), |
| mDefaultHeight(0), |
| mDefaultSamples(0), |
| mDefaultFixedSampleLocations(GL_FALSE), |
| mDefaultLayers(0), |
| mWebGLDepthStencilConsistent(true), |
| mDefaultFramebufferReadAttachmentInitialized(false) |
| { |
| ASSERT(mId != Framebuffer::kDefaultDrawFramebufferHandle); |
| ASSERT(mDrawBufferStates.size() > 0); |
| mDrawBufferStates[0] = GL_COLOR_ATTACHMENT0_EXT; |
| } |
| |
| FramebufferState::~FramebufferState() {} |
| |
| const std::string &FramebufferState::getLabel() |
| { |
| return mLabel; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getAttachment(const Context *context, |
| GLenum attachment) const |
| { |
| if (attachment >= GL_COLOR_ATTACHMENT0 && attachment <= GL_COLOR_ATTACHMENT15) |
| { |
| return getColorAttachment(attachment - GL_COLOR_ATTACHMENT0); |
| } |
| |
| // WebGL1 allows a developer to query for attachment parameters even when "inconsistant" (i.e. |
| // multiple conflicting attachment points) and requires us to return the framebuffer attachment |
| // associated with WebGL. |
| switch (attachment) |
| { |
| case GL_COLOR: |
| case GL_BACK: |
| return getColorAttachment(0); |
| case GL_DEPTH: |
| case GL_DEPTH_ATTACHMENT: |
| if (context->isWebGL1()) |
| { |
| return getWebGLDepthAttachment(); |
| } |
| else |
| { |
| return getDepthAttachment(); |
| } |
| case GL_STENCIL: |
| case GL_STENCIL_ATTACHMENT: |
| if (context->isWebGL1()) |
| { |
| return getWebGLStencilAttachment(); |
| } |
| else |
| { |
| return getStencilAttachment(); |
| } |
| case GL_DEPTH_STENCIL: |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| if (context->isWebGL1()) |
| { |
| return getWebGLDepthStencilAttachment(); |
| } |
| else |
| { |
| return getDepthStencilAttachment(); |
| } |
| default: |
| UNREACHABLE(); |
| return nullptr; |
| } |
| } |
| |
| size_t FramebufferState::getReadIndex() const |
| { |
| ASSERT(mReadBufferState == GL_BACK || |
| (mReadBufferState >= GL_COLOR_ATTACHMENT0 && mReadBufferState <= GL_COLOR_ATTACHMENT15)); |
| size_t readIndex = (mReadBufferState == GL_BACK |
| ? 0 |
| : static_cast<size_t>(mReadBufferState - GL_COLOR_ATTACHMENT0)); |
| ASSERT(readIndex < mColorAttachments.size()); |
| return readIndex; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getReadAttachment() const |
| { |
| if (mReadBufferState == GL_NONE) |
| { |
| return nullptr; |
| } |
| |
| size_t readIndex = getReadIndex(); |
| const gl::FramebufferAttachment &framebufferAttachment = |
| isDefault() ? mDefaultFramebufferReadAttachment : mColorAttachments[readIndex]; |
| |
| return framebufferAttachment.isAttached() ? &framebufferAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getFirstNonNullAttachment() const |
| { |
| auto *colorAttachment = getFirstColorAttachment(); |
| if (colorAttachment) |
| { |
| return colorAttachment; |
| } |
| return getDepthOrStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *FramebufferState::getFirstColorAttachment() const |
| { |
| for (const FramebufferAttachment &colorAttachment : mColorAttachments) |
| { |
| if (colorAttachment.isAttached()) |
| { |
| return &colorAttachment; |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getDepthOrStencilAttachment() const |
| { |
| if (mDepthAttachment.isAttached()) |
| { |
| return &mDepthAttachment; |
| } |
| if (mStencilAttachment.isAttached()) |
| { |
| return &mStencilAttachment; |
| } |
| return nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getStencilOrDepthStencilAttachment() const |
| { |
| if (mStencilAttachment.isAttached()) |
| { |
| return &mStencilAttachment; |
| } |
| return getDepthStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *FramebufferState::getColorAttachment(size_t colorAttachment) const |
| { |
| ASSERT(colorAttachment < mColorAttachments.size()); |
| return mColorAttachments[colorAttachment].isAttached() ? &mColorAttachments[colorAttachment] |
| : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getDepthAttachment() const |
| { |
| return mDepthAttachment.isAttached() ? &mDepthAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getWebGLDepthAttachment() const |
| { |
| return mWebGLDepthAttachment.isAttached() ? &mWebGLDepthAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getWebGLDepthStencilAttachment() const |
| { |
| return mWebGLDepthStencilAttachment.isAttached() ? &mWebGLDepthStencilAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getStencilAttachment() const |
| { |
| return mStencilAttachment.isAttached() ? &mStencilAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getWebGLStencilAttachment() const |
| { |
| return mWebGLStencilAttachment.isAttached() ? &mWebGLStencilAttachment : nullptr; |
| } |
| |
| const FramebufferAttachment *FramebufferState::getDepthStencilAttachment() const |
| { |
| // A valid depth-stencil attachment has the same resource bound to both the |
| // depth and stencil attachment points. |
| if (mDepthAttachment.isAttached() && mStencilAttachment.isAttached() && |
| mDepthAttachment == mStencilAttachment) |
| { |
| return &mDepthAttachment; |
| } |
| |
| return nullptr; |
| } |
| |
| bool FramebufferState::attachmentsHaveSameDimensions() const |
| { |
| Optional<Extents> attachmentSize; |
| |
| auto hasMismatchedSize = [&attachmentSize](const FramebufferAttachment &attachment) { |
| if (!attachment.isAttached()) |
| { |
| return false; |
| } |
| |
| if (!attachmentSize.valid()) |
| { |
| attachmentSize = attachment.getSize(); |
| return false; |
| } |
| |
| const auto &prevSize = attachmentSize.value(); |
| const auto &curSize = attachment.getSize(); |
| return (curSize.width != prevSize.width || curSize.height != prevSize.height); |
| }; |
| |
| for (const auto &attachment : mColorAttachments) |
| { |
| if (hasMismatchedSize(attachment)) |
| { |
| return false; |
| } |
| } |
| |
| if (hasMismatchedSize(mDepthAttachment)) |
| { |
| return false; |
| } |
| |
| return !hasMismatchedSize(mStencilAttachment); |
| } |
| |
| bool FramebufferState::hasSeparateDepthAndStencilAttachments() const |
| { |
| // if we have both a depth and stencil buffer, they must refer to the same object |
| // since we only support packed_depth_stencil and not separate depth and stencil |
| return (getDepthAttachment() != nullptr && getStencilAttachment() != nullptr && |
| getDepthStencilAttachment() == nullptr); |
| } |
| |
| const FramebufferAttachment *FramebufferState::getDrawBuffer(size_t drawBufferIdx) const |
| { |
| ASSERT(drawBufferIdx < mDrawBufferStates.size()); |
| if (mDrawBufferStates[drawBufferIdx] != GL_NONE) |
| { |
| // ES3 spec: "If the GL is bound to a draw framebuffer object, the ith buffer listed in bufs |
| // must be COLOR_ATTACHMENTi or NONE" |
| ASSERT(mDrawBufferStates[drawBufferIdx] == GL_COLOR_ATTACHMENT0 + drawBufferIdx || |
| (drawBufferIdx == 0 && mDrawBufferStates[drawBufferIdx] == GL_BACK)); |
| |
| if (mDrawBufferStates[drawBufferIdx] == GL_BACK) |
| { |
| return getColorAttachment(0); |
| } |
| else |
| { |
| return getColorAttachment(mDrawBufferStates[drawBufferIdx] - GL_COLOR_ATTACHMENT0); |
| } |
| } |
| else |
| { |
| return nullptr; |
| } |
| } |
| |
| size_t FramebufferState::getDrawBufferCount() const |
| { |
| return mDrawBufferStates.size(); |
| } |
| |
| bool FramebufferState::colorAttachmentsAreUniqueImages() const |
| { |
| for (size_t firstAttachmentIdx = 0; firstAttachmentIdx < mColorAttachments.size(); |
| firstAttachmentIdx++) |
| { |
| const FramebufferAttachment &firstAttachment = mColorAttachments[firstAttachmentIdx]; |
| if (!firstAttachment.isAttached()) |
| { |
| continue; |
| } |
| |
| for (size_t secondAttachmentIdx = firstAttachmentIdx + 1; |
| secondAttachmentIdx < mColorAttachments.size(); secondAttachmentIdx++) |
| { |
| const FramebufferAttachment &secondAttachment = mColorAttachments[secondAttachmentIdx]; |
| if (!secondAttachment.isAttached()) |
| { |
| continue; |
| } |
| |
| if (firstAttachment == secondAttachment) |
| { |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| bool FramebufferState::hasDepth() const |
| { |
| return (mDepthAttachment.isAttached() && mDepthAttachment.getDepthSize() > 0); |
| } |
| |
| bool FramebufferState::hasStencil() const |
| { |
| return (mStencilAttachment.isAttached() && mStencilAttachment.getStencilSize() > 0); |
| } |
| |
| bool FramebufferState::isMultiview() const |
| { |
| const FramebufferAttachment *attachment = getFirstNonNullAttachment(); |
| if (attachment == nullptr) |
| { |
| return false; |
| } |
| return attachment->isMultiview(); |
| } |
| |
| int FramebufferState::getBaseViewIndex() const |
| { |
| const FramebufferAttachment *attachment = getFirstNonNullAttachment(); |
| if (attachment == nullptr) |
| { |
| return GL_NONE; |
| } |
| return attachment->getBaseViewIndex(); |
| } |
| |
| Box FramebufferState::getDimensions() const |
| { |
| Extents extents = getExtents(); |
| return Box(0, 0, 0, extents.width, extents.height, extents.depth); |
| } |
| |
| Extents FramebufferState::getExtents() const |
| { |
| ASSERT(attachmentsHaveSameDimensions()); |
| const FramebufferAttachment *first = getFirstNonNullAttachment(); |
| if (first) |
| { |
| return first->getSize(); |
| } |
| return Extents(getDefaultWidth(), getDefaultHeight(), 0); |
| } |
| |
| bool FramebufferState::isDefault() const |
| { |
| return mId == Framebuffer::kDefaultDrawFramebufferHandle; |
| } |
| |
| const FramebufferID Framebuffer::kDefaultDrawFramebufferHandle = {0}; |
| |
| Framebuffer::Framebuffer(const Caps &caps, rx::GLImplFactory *factory, FramebufferID id) |
| : mState(caps, id), |
| mImpl(factory->createFramebuffer(mState)), |
| mCachedStatus(), |
| mDirtyDepthAttachmentBinding(this, DIRTY_BIT_DEPTH_ATTACHMENT), |
| mDirtyStencilAttachmentBinding(this, DIRTY_BIT_STENCIL_ATTACHMENT) |
| { |
| ASSERT(mImpl != nullptr); |
| ASSERT(mState.mColorAttachments.size() == static_cast<size_t>(caps.maxColorAttachments)); |
| |
| for (uint32_t colorIndex = 0; |
| colorIndex < static_cast<uint32_t>(mState.mColorAttachments.size()); ++colorIndex) |
| { |
| mDirtyColorAttachmentBindings.emplace_back(this, DIRTY_BIT_COLOR_ATTACHMENT_0 + colorIndex); |
| } |
| mDirtyBits.set(DIRTY_BIT_READ_BUFFER); |
| } |
| |
| Framebuffer::Framebuffer(const Context *context, egl::Surface *surface, egl::Surface *readSurface) |
| : mState(), |
| mImpl(surface->getImplementation()->createDefaultFramebuffer(context, mState)), |
| mCachedStatus(GL_FRAMEBUFFER_COMPLETE), |
| mDirtyDepthAttachmentBinding(this, DIRTY_BIT_DEPTH_ATTACHMENT), |
| mDirtyStencilAttachmentBinding(this, DIRTY_BIT_STENCIL_ATTACHMENT) |
| { |
| ASSERT(mImpl != nullptr); |
| |
| mDirtyColorAttachmentBindings.emplace_back(this, DIRTY_BIT_COLOR_ATTACHMENT_0); |
| setAttachmentImpl(context, GL_FRAMEBUFFER_DEFAULT, GL_BACK, ImageIndex(), surface, |
| FramebufferAttachment::kDefaultNumViews, |
| FramebufferAttachment::kDefaultBaseViewIndex, false, |
| FramebufferAttachment::kDefaultRenderToTextureSamples); |
| |
| setReadSurface(context, readSurface); |
| |
| if (surface->getConfig()->depthSize > 0) |
| { |
| setAttachmentImpl(context, GL_FRAMEBUFFER_DEFAULT, GL_DEPTH, ImageIndex(), surface, |
| FramebufferAttachment::kDefaultNumViews, |
| FramebufferAttachment::kDefaultBaseViewIndex, false, |
| FramebufferAttachment::kDefaultRenderToTextureSamples); |
| } |
| |
| if (surface->getConfig()->stencilSize > 0) |
| { |
| setAttachmentImpl(context, GL_FRAMEBUFFER_DEFAULT, GL_STENCIL, ImageIndex(), surface, |
| FramebufferAttachment::kDefaultNumViews, |
| FramebufferAttachment::kDefaultBaseViewIndex, false, |
| FramebufferAttachment::kDefaultRenderToTextureSamples); |
| } |
| SetComponentTypeMask(getDrawbufferWriteType(0), 0, &mState.mDrawBufferTypeMask); |
| |
| // Ensure the backend has a chance to synchronize its content for a new backbuffer. |
| mDirtyBits.set(DIRTY_BIT_COLOR_BUFFER_CONTENTS_0); |
| } |
| |
| Framebuffer::Framebuffer(const Context *context, |
| rx::GLImplFactory *factory, |
| egl::Surface *readSurface) |
| : mState(), |
| mImpl(factory->createFramebuffer(mState)), |
| mCachedStatus(GL_FRAMEBUFFER_UNDEFINED_OES), |
| mDirtyDepthAttachmentBinding(this, DIRTY_BIT_DEPTH_ATTACHMENT), |
| mDirtyStencilAttachmentBinding(this, DIRTY_BIT_STENCIL_ATTACHMENT) |
| { |
| mDirtyColorAttachmentBindings.emplace_back(this, DIRTY_BIT_COLOR_ATTACHMENT_0); |
| SetComponentTypeMask(getDrawbufferWriteType(0), 0, &mState.mDrawBufferTypeMask); |
| |
| setReadSurface(context, readSurface); |
| } |
| |
| Framebuffer::~Framebuffer() |
| { |
| SafeDelete(mImpl); |
| } |
| |
| void Framebuffer::onDestroy(const Context *context) |
| { |
| if (isDefault()) |
| { |
| mState.mDefaultFramebufferReadAttachment.detach(context); |
| mState.mDefaultFramebufferReadAttachmentInitialized = false; |
| } |
| |
| for (auto &attachment : mState.mColorAttachments) |
| { |
| attachment.detach(context); |
| } |
| mState.mDepthAttachment.detach(context); |
| mState.mStencilAttachment.detach(context); |
| mState.mWebGLDepthAttachment.detach(context); |
| mState.mWebGLStencilAttachment.detach(context); |
| mState.mWebGLDepthStencilAttachment.detach(context); |
| |
| mImpl->destroy(context); |
| } |
| |
| void Framebuffer::setReadSurface(const Context *context, egl::Surface *readSurface) |
| { |
| // updateAttachment() without mState.mResourceNeedsInit.set() |
| mState.mDefaultFramebufferReadAttachment.attach( |
| context, GL_FRAMEBUFFER_DEFAULT, GL_BACK, ImageIndex(), readSurface, |
| FramebufferAttachment::kDefaultNumViews, FramebufferAttachment::kDefaultBaseViewIndex, |
| false, FramebufferAttachment::kDefaultRenderToTextureSamples); |
| mDirtyBits.set(DIRTY_BIT_READ_BUFFER); |
| } |
| |
| void Framebuffer::setLabel(const Context *context, const std::string &label) |
| { |
| mState.mLabel = label; |
| } |
| |
| const std::string &Framebuffer::getLabel() const |
| { |
| return mState.mLabel; |
| } |
| |
| bool Framebuffer::detachTexture(const Context *context, TextureID textureId) |
| { |
| return detachResourceById(context, GL_TEXTURE, textureId.value); |
| } |
| |
| bool Framebuffer::detachRenderbuffer(const Context *context, RenderbufferID renderbufferId) |
| { |
| return detachResourceById(context, GL_RENDERBUFFER, renderbufferId.value); |
| } |
| |
| bool Framebuffer::detachResourceById(const Context *context, GLenum resourceType, GLuint resourceId) |
| { |
| bool found = false; |
| |
| for (size_t colorIndex = 0; colorIndex < mState.mColorAttachments.size(); ++colorIndex) |
| { |
| if (detachMatchingAttachment(context, &mState.mColorAttachments[colorIndex], resourceType, |
| resourceId)) |
| { |
| found = true; |
| } |
| } |
| |
| if (context->isWebGL1()) |
| { |
| const std::array<FramebufferAttachment *, 3> attachments = { |
| {&mState.mWebGLDepthStencilAttachment, &mState.mWebGLDepthAttachment, |
| &mState.mWebGLStencilAttachment}}; |
| for (FramebufferAttachment *attachment : attachments) |
| { |
| if (detachMatchingAttachment(context, attachment, resourceType, resourceId)) |
| { |
| found = true; |
| } |
| } |
| } |
| else |
| { |
| if (detachMatchingAttachment(context, &mState.mDepthAttachment, resourceType, resourceId)) |
| { |
| found = true; |
| } |
| if (detachMatchingAttachment(context, &mState.mStencilAttachment, resourceType, resourceId)) |
| { |
| found = true; |
| } |
| } |
| |
| return found; |
| } |
| |
| bool Framebuffer::detachMatchingAttachment(const Context *context, |
| FramebufferAttachment *attachment, |
| GLenum matchType, |
| GLuint matchId) |
| { |
| if (attachment->isAttached() && attachment->type() == matchType && attachment->id() == matchId) |
| { |
| // We go through resetAttachment to make sure that all the required bookkeeping will be done |
| // such as updating enabled draw buffer state. |
| resetAttachment(context, attachment->getBinding()); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| const FramebufferAttachment *Framebuffer::getColorAttachment(size_t colorAttachment) const |
| { |
| return mState.getColorAttachment(colorAttachment); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getDepthAttachment() const |
| { |
| return mState.getDepthAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getStencilAttachment() const |
| { |
| return mState.getStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getDepthStencilAttachment() const |
| { |
| return mState.getDepthStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getDepthOrStencilAttachment() const |
| { |
| return mState.getDepthOrStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getStencilOrDepthStencilAttachment() const |
| { |
| return mState.getStencilOrDepthStencilAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getReadColorAttachment() const |
| { |
| return mState.getReadAttachment(); |
| } |
| |
| GLenum Framebuffer::getReadColorAttachmentType() const |
| { |
| const FramebufferAttachment *readAttachment = mState.getReadAttachment(); |
| return (readAttachment != nullptr ? readAttachment->type() : GL_NONE); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getFirstColorAttachment() const |
| { |
| return mState.getFirstColorAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getFirstNonNullAttachment() const |
| { |
| return mState.getFirstNonNullAttachment(); |
| } |
| |
| const FramebufferAttachment *Framebuffer::getAttachment(const Context *context, |
| GLenum attachment) const |
| { |
| return mState.getAttachment(context, attachment); |
| } |
| |
| size_t Framebuffer::getDrawbufferStateCount() const |
| { |
| return mState.mDrawBufferStates.size(); |
| } |
| |
| GLenum Framebuffer::getDrawBufferState(size_t drawBuffer) const |
| { |
| ASSERT(drawBuffer < mState.mDrawBufferStates.size()); |
| return mState.mDrawBufferStates[drawBuffer]; |
| } |
| |
| const std::vector<GLenum> &Framebuffer::getDrawBufferStates() const |
| { |
| return mState.getDrawBufferStates(); |
| } |
| |
| void Framebuffer::setDrawBuffers(size_t count, const GLenum *buffers) |
| { |
| auto &drawStates = mState.mDrawBufferStates; |
| |
| ASSERT(count <= drawStates.size()); |
| std::copy(buffers, buffers + count, drawStates.begin()); |
| std::fill(drawStates.begin() + count, drawStates.end(), GL_NONE); |
| mDirtyBits.set(DIRTY_BIT_DRAW_BUFFERS); |
| |
| mState.mEnabledDrawBuffers.reset(); |
| mState.mDrawBufferTypeMask.reset(); |
| |
| for (size_t index = 0; index < count; ++index) |
| { |
| SetComponentTypeMask(getDrawbufferWriteType(index), index, &mState.mDrawBufferTypeMask); |
| |
| if (drawStates[index] != GL_NONE && mState.mColorAttachments[index].isAttached()) |
| { |
| mState.mEnabledDrawBuffers.set(index); |
| } |
| } |
| } |
| |
| const FramebufferAttachment *Framebuffer::getDrawBuffer(size_t drawBuffer) const |
| { |
| return mState.getDrawBuffer(drawBuffer); |
| } |
| |
| ComponentType Framebuffer::getDrawbufferWriteType(size_t drawBuffer) const |
| { |
| const FramebufferAttachment *attachment = mState.getDrawBuffer(drawBuffer); |
| if (attachment == nullptr) |
| { |
| return ComponentType::NoType; |
| } |
| |
| GLenum componentType = attachment->getFormat().info->componentType; |
| switch (componentType) |
| { |
| case GL_INT: |
| return ComponentType::Int; |
| case GL_UNSIGNED_INT: |
| return ComponentType::UnsignedInt; |
| |
| default: |
| return ComponentType::Float; |
| } |
| } |
| |
| ComponentTypeMask Framebuffer::getDrawBufferTypeMask() const |
| { |
| return mState.mDrawBufferTypeMask; |
| } |
| |
| DrawBufferMask Framebuffer::getDrawBufferMask() const |
| { |
| return mState.mEnabledDrawBuffers; |
| } |
| |
| bool Framebuffer::hasEnabledDrawBuffer() const |
| { |
| for (size_t drawbufferIdx = 0; drawbufferIdx < mState.mDrawBufferStates.size(); ++drawbufferIdx) |
| { |
| if (getDrawBuffer(drawbufferIdx) != nullptr) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| GLenum Framebuffer::getReadBufferState() const |
| { |
| return mState.mReadBufferState; |
| } |
| |
| void Framebuffer::setReadBuffer(GLenum buffer) |
| { |
| ASSERT(buffer == GL_BACK || buffer == GL_NONE || |
| (buffer >= GL_COLOR_ATTACHMENT0 && |
| (buffer - GL_COLOR_ATTACHMENT0) < mState.mColorAttachments.size())); |
| mState.mReadBufferState = buffer; |
| mDirtyBits.set(DIRTY_BIT_READ_BUFFER); |
| } |
| |
| size_t Framebuffer::getNumColorAttachments() const |
| { |
| return mState.mColorAttachments.size(); |
| } |
| |
| bool Framebuffer::hasDepth() const |
| { |
| return mState.hasDepth(); |
| } |
| |
| bool Framebuffer::hasStencil() const |
| { |
| return mState.hasStencil(); |
| } |
| |
| bool Framebuffer::usingExtendedDrawBuffers() const |
| { |
| for (size_t drawbufferIdx = 1; drawbufferIdx < mState.mDrawBufferStates.size(); ++drawbufferIdx) |
| { |
| if (getDrawBuffer(drawbufferIdx) != nullptr) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| void Framebuffer::invalidateCompletenessCache() |
| { |
| if (!isDefault()) |
| { |
| mCachedStatus.reset(); |
| } |
| onStateChange(angle::SubjectMessage::DirtyBitsFlagged); |
| } |
| |
| GLenum Framebuffer::checkStatusImpl(const Context *context) |
| { |
| ASSERT(!isDefault()); |
| ASSERT(hasAnyDirtyBit() || !mCachedStatus.valid()); |
| |
| mCachedStatus = checkStatusWithGLFrontEnd(context); |
| |
| if (mCachedStatus.value() == GL_FRAMEBUFFER_COMPLETE) |
| { |
| // We can skip syncState on several back-ends. |
| if (mImpl->shouldSyncStateBeforeCheckStatus()) |
| { |
| angle::Result err = syncState(context); |
| if (err != angle::Result::Continue) |
| { |
| return 0; |
| } |
| } |
| |
| if (!mImpl->checkStatus(context)) |
| { |
| mCachedStatus = GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| } |
| |
| return mCachedStatus.value(); |
| } |
| |
| GLenum Framebuffer::checkStatusWithGLFrontEnd(const Context *context) |
| { |
| const State &state = context->getState(); |
| |
| ASSERT(!isDefault()); |
| |
| bool hasAttachments = false; |
| Optional<unsigned int> colorbufferSize; |
| Optional<int> samples; |
| Optional<bool> fixedSampleLocations; |
| bool hasRenderbuffer = false; |
| Optional<int> renderToTextureSamples; |
| |
| const FramebufferAttachment *firstAttachment = getFirstNonNullAttachment(); |
| |
| Optional<bool> isLayered; |
| Optional<TextureType> colorAttachmentsTextureType; |
| |
| for (const FramebufferAttachment &colorAttachment : mState.mColorAttachments) |
| { |
| if (colorAttachment.isAttached()) |
| { |
| if (!CheckAttachmentCompleteness(context, colorAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| const InternalFormat &format = *colorAttachment.getFormat().info; |
| if (format.depthBits > 0 || format.stencilBits > 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| if (!CheckAttachmentSampleCompleteness(context, colorAttachment, true, &samples, |
| &fixedSampleLocations, &renderToTextureSamples)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| } |
| |
| // in GLES 2.0, all color attachments attachments must have the same number of bitplanes |
| // in GLES 3.0, there is no such restriction |
| if (state.getClientMajorVersion() < 3) |
| { |
| if (colorbufferSize.valid()) |
| { |
| if (format.pixelBytes != colorbufferSize.value()) |
| { |
| return GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| } |
| else |
| { |
| colorbufferSize = format.pixelBytes; |
| } |
| } |
| |
| if (!CheckMultiviewStateMatchesForCompleteness(firstAttachment, &colorAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR; |
| } |
| |
| hasRenderbuffer = hasRenderbuffer || (colorAttachment.type() == GL_RENDERBUFFER); |
| |
| if (!hasAttachments) |
| { |
| isLayered = colorAttachment.isLayered(); |
| if (isLayered.value()) |
| { |
| colorAttachmentsTextureType = colorAttachment.getTextureImageIndex().getType(); |
| } |
| hasAttachments = true; |
| } |
| else |
| { |
| // [EXT_geometry_shader] section 9.4.1, "Framebuffer Completeness" |
| // If any framebuffer attachment is layered, all populated attachments |
| // must be layered. Additionally, all populated color attachments must |
| // be from textures of the same target. {FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT } |
| ASSERT(isLayered.valid()); |
| if (isLayered.value() != colorAttachment.isLayered()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT; |
| } |
| else if (isLayered.value()) |
| { |
| ASSERT(colorAttachmentsTextureType.valid()); |
| if (colorAttachmentsTextureType.value() != |
| colorAttachment.getTextureImageIndex().getType()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT; |
| } |
| } |
| } |
| } |
| } |
| |
| const FramebufferAttachment &depthAttachment = mState.mDepthAttachment; |
| if (depthAttachment.isAttached()) |
| { |
| if (!CheckAttachmentCompleteness(context, depthAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| const InternalFormat &format = *depthAttachment.getFormat().info; |
| if (format.depthBits == 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| if (!CheckAttachmentSampleCompleteness(context, depthAttachment, false, &samples, |
| &fixedSampleLocations, &renderToTextureSamples)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| } |
| |
| if (!CheckMultiviewStateMatchesForCompleteness(firstAttachment, &depthAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR; |
| } |
| |
| hasRenderbuffer = hasRenderbuffer || (depthAttachment.type() == GL_RENDERBUFFER); |
| |
| if (!hasAttachments) |
| { |
| isLayered = depthAttachment.isLayered(); |
| hasAttachments = true; |
| } |
| else |
| { |
| // [EXT_geometry_shader] section 9.4.1, "Framebuffer Completeness" |
| // If any framebuffer attachment is layered, all populated attachments |
| // must be layered. {FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT } |
| ASSERT(isLayered.valid()); |
| if (isLayered.value() != depthAttachment.isLayered()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT; |
| } |
| } |
| } |
| |
| const FramebufferAttachment &stencilAttachment = mState.mStencilAttachment; |
| if (stencilAttachment.isAttached()) |
| { |
| if (!CheckAttachmentCompleteness(context, stencilAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| const InternalFormat &format = *stencilAttachment.getFormat().info; |
| if (format.stencilBits == 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| if (!CheckAttachmentSampleCompleteness(context, stencilAttachment, false, &samples, |
| &fixedSampleLocations, &renderToTextureSamples)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| } |
| |
| if (!CheckMultiviewStateMatchesForCompleteness(firstAttachment, &stencilAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR; |
| } |
| |
| hasRenderbuffer = hasRenderbuffer || (stencilAttachment.type() == GL_RENDERBUFFER); |
| |
| if (!hasAttachments) |
| { |
| hasAttachments = true; |
| } |
| else |
| { |
| // [EXT_geometry_shader] section 9.4.1, "Framebuffer Completeness" |
| // If any framebuffer attachment is layered, all populated attachments |
| // must be layered. |
| // {FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT } |
| ASSERT(isLayered.valid()); |
| if (isLayered.value() != stencilAttachment.isLayered()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS_EXT; |
| } |
| } |
| } |
| |
| // Starting from ES 3.0 stencil and depth, if present, should be the same image |
| if (state.getClientMajorVersion() >= 3 && depthAttachment.isAttached() && |
| stencilAttachment.isAttached() && stencilAttachment != depthAttachment) |
| { |
| return GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| |
| // Special additional validation for WebGL 1 DEPTH/STENCIL/DEPTH_STENCIL. |
| if (state.isWebGL1()) |
| { |
| if (!mState.mWebGLDepthStencilConsistent) |
| { |
| return GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| |
| if (mState.mWebGLDepthStencilAttachment.isAttached()) |
| { |
| if (mState.mWebGLDepthStencilAttachment.getDepthSize() == 0 || |
| mState.mWebGLDepthStencilAttachment.getStencilSize() == 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| |
| if (!CheckMultiviewStateMatchesForCompleteness(firstAttachment, |
| &mState.mWebGLDepthStencilAttachment)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_VIEW_TARGETS_OVR; |
| } |
| } |
| else if (mState.mStencilAttachment.isAttached() && |
| mState.mStencilAttachment.getDepthSize() > 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| else if (mState.mDepthAttachment.isAttached() && |
| mState.mDepthAttachment.getStencilSize() > 0) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT; |
| } |
| } |
| |
| // ES3.1(section 9.4) requires that if no image is attached to the framebuffer, and either the |
| // value of the framebuffer's FRAMEBUFFER_DEFAULT_WIDTH or FRAMEBUFFER_DEFAULT_HEIGHT parameters |
| // is zero, the framebuffer is considered incomplete. |
| GLint defaultWidth = mState.getDefaultWidth(); |
| GLint defaultHeight = mState.getDefaultHeight(); |
| if (!hasAttachments && (defaultWidth == 0 || defaultHeight == 0)) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; |
| } |
| |
| // In ES 2.0 and WebGL, all color attachments must have the same width and height. |
| // In ES 3.0, there is no such restriction. |
| if ((state.getClientMajorVersion() < 3 || state.getExtensions().webglCompatibility) && |
| !mState.attachmentsHaveSameDimensions()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS; |
| } |
| |
| // ES3.1(section 9.4) requires that if the attached images are a mix of renderbuffers and |
| // textures, the value of TEXTURE_FIXED_SAMPLE_LOCATIONS must be TRUE for all attached textures. |
| if (fixedSampleLocations.valid() && hasRenderbuffer && !fixedSampleLocations.value()) |
| { |
| return GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; |
| } |
| |
| // The WebGL conformance tests implicitly define that all framebuffer |
| // attachments must be unique. For example, the same level of a texture can |
| // not be attached to two different color attachments. |
| if (state.getExtensions().webglCompatibility) |
| { |
| if (!mState.colorAttachmentsAreUniqueImages()) |
| { |
| return GL_FRAMEBUFFER_UNSUPPORTED; |
| } |
| } |
| |
| return GL_FRAMEBUFFER_COMPLETE; |
| } |
| |
| angle::Result Framebuffer::discard(const Context *context, size_t count, const GLenum *attachments) |
| { |
| // Back-ends might make the contents of the FBO undefined. In WebGL 2.0, invalidate operations |
| // can be no-ops, so we should probably do that to ensure consistency. |
| // TODO(jmadill): WebGL behaviour, and robust resource init behaviour without WebGL. |
| |
| return mImpl->discard(context, count, attachments); |
| } |
| |
| angle::Result Framebuffer::invalidate(const Context *context, |
| size_t count, |
| const GLenum *attachments) |
| { |
| // Back-ends might make the contents of the FBO undefined. In WebGL 2.0, invalidate operations |
| // can be no-ops, so we should probably do that to ensure consistency. |
| // TODO(jmadill): WebGL behaviour, and robust resource init behaviour without WebGL. |
| |
| return mImpl->invalidate(context, count, attachments); |
| } |
| |
| bool Framebuffer::partialClearNeedsInit(const Context *context, |
| bool color, |
| bool depth, |
| bool stencil) |
| { |
| const auto &glState = context->getState(); |
| |
| if (!glState.isRobustResourceInitEnabled()) |
| { |
| return false; |
| } |
| |
| // Scissors can affect clearing. |
| // TODO(jmadill): Check for complete scissor overlap. |
| if (glState.isScissorTestEnabled()) |
| { |
| return true; |
| } |
| |
| // If colors masked, we must clear before we clear. Do a simple check. |
| // TODO(jmadill): Filter out unused color channels from the test. |
| if (color) |
| { |
| const auto &blend = glState.getBlendState(); |
| if (!(blend.colorMaskRed && blend.colorMaskGreen && blend.colorMaskBlue && |
| blend.colorMaskAlpha)) |
| { |
| return true; |
| } |
| } |
| |
| const auto &depthStencil = glState.getDepthStencilState(); |
| if (stencil && (depthStencil.stencilMask != depthStencil.stencilWritemask || |
| depthStencil.stencilBackMask != depthStencil.stencilBackWritemask)) |
| { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| angle::Result Framebuffer::invalidateSub(const Context *context, |
| size_t count, |
| const GLenum *attachments, |
| const Rectangle &area) |
| { |
| // Back-ends might make the contents of the FBO undefined. In WebGL 2.0, invalidate operations |
| // can be no-ops, so we should probably do that to ensure consistency. |
| // TODO(jmadill): Make a invalidate no-op in WebGL 2.0. |
| |
| return mImpl->invalidateSub(context, count, attachments, area); |
| } |
| |
| angle::Result Framebuffer::clear(const Context *context, GLbitfield mask) |
| { |
| const auto &glState = context->getState(); |
| if (glState.isRasterizerDiscardEnabled()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| // Remove clear bits that are ineffective. An effective clear changes at least one fragment. If |
| // color/depth/stencil masks make the clear ineffective we skip it altogether. |
| |
| // If all color channels are masked, don't attempt to clear color. |
| if (context->getState().getBlendState().allChannelsMasked()) |
| { |
| mask &= ~GL_COLOR_BUFFER_BIT; |
| } |
| |
| // If depth write is disabled, don't attempt to clear depth. |
| if (!context->getState().getDepthStencilState().depthMask) |
| { |
| mask &= ~GL_DEPTH_BUFFER_BIT; |
| } |
| |
| // If all stencil bits are masked, don't attempt to clear stencil. |
| if (context->getState().getDepthStencilState().stencilWritemask == 0) |
| { |
| mask &= ~GL_STENCIL_BUFFER_BIT; |
| } |
| |
| if (mask != 0) |
| { |
| ANGLE_TRY(mImpl->clear(context, mask)); |
| } |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::clearBufferfv(const Context *context, |
| GLenum buffer, |
| GLint drawbuffer, |
| const GLfloat *values) |
| { |
| if (context->getState().isRasterizerDiscardEnabled() || IsClearBufferMaskedOut(context, buffer)) |
| { |
| return angle::Result::Continue; |
| } |
| |
| if (buffer == GL_DEPTH) |
| { |
| // If depth write is disabled, don't attempt to clear depth. |
| if (!context->getState().getDepthStencilState().depthMask) |
| { |
| return angle::Result::Continue; |
| } |
| } |
| else |
| { |
| // If all color channels are masked, don't attempt to clear color. |
| if (context->getState().getBlendState().allChannelsMasked()) |
| { |
| return angle::Result::Continue; |
| } |
| } |
| |
| ANGLE_TRY(mImpl->clearBufferfv(context, buffer, drawbuffer, values)); |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::clearBufferuiv(const Context *context, |
| GLenum buffer, |
| GLint drawbuffer, |
| const GLuint *values) |
| { |
| if (context->getState().isRasterizerDiscardEnabled() || IsClearBufferMaskedOut(context, buffer)) |
| { |
| return angle::Result::Continue; |
| } |
| |
| // If all color channels are masked, don't attempt to clear color. |
| if (context->getState().getBlendState().allChannelsMasked()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| ANGLE_TRY(mImpl->clearBufferuiv(context, buffer, drawbuffer, values)); |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::clearBufferiv(const Context *context, |
| GLenum buffer, |
| GLint drawbuffer, |
| const GLint *values) |
| { |
| if (context->getState().isRasterizerDiscardEnabled() || IsClearBufferMaskedOut(context, buffer)) |
| { |
| return angle::Result::Continue; |
| } |
| |
| if (buffer == GL_STENCIL) |
| { |
| // If all stencil bits are masked, don't attempt to clear stencil. |
| if (context->getState().getDepthStencilState().stencilWritemask == 0) |
| { |
| return angle::Result::Continue; |
| } |
| } |
| else |
| { |
| // If all color channels are masked, don't attempt to clear color. |
| if (context->getState().getBlendState().allChannelsMasked()) |
| { |
| return angle::Result::Continue; |
| } |
| } |
| |
| ANGLE_TRY(mImpl->clearBufferiv(context, buffer, drawbuffer, values)); |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::clearBufferfi(const Context *context, |
| GLenum buffer, |
| GLint drawbuffer, |
| GLfloat depth, |
| GLint stencil) |
| { |
| if (context->getState().isRasterizerDiscardEnabled() || IsClearBufferMaskedOut(context, buffer)) |
| { |
| return angle::Result::Continue; |
| } |
| |
| bool clearDepth = context->getState().getDepthStencilState().depthMask; |
| bool clearStencil = context->getState().getDepthStencilState().stencilWritemask != 0; |
| |
| if (clearDepth && clearStencil) |
| { |
| ASSERT(buffer == GL_DEPTH_STENCIL); |
| ANGLE_TRY(mImpl->clearBufferfi(context, GL_DEPTH_STENCIL, drawbuffer, depth, stencil)); |
| } |
| else if (clearDepth && !clearStencil) |
| { |
| ANGLE_TRY(mImpl->clearBufferfv(context, GL_DEPTH, drawbuffer, &depth)); |
| } |
| else if (!clearDepth && clearStencil) |
| { |
| ANGLE_TRY(mImpl->clearBufferiv(context, GL_STENCIL, drawbuffer, &stencil)); |
| } |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::getImplementationColorReadFormat(const Context *context, |
| GLenum *formatOut) |
| { |
| ANGLE_TRY(syncState(context)); |
| *formatOut = mImpl->getImplementationColorReadFormat(context); |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::getImplementationColorReadType(const Context *context, GLenum *typeOut) |
| { |
| ANGLE_TRY(syncState(context)); |
| *typeOut = mImpl->getImplementationColorReadType(context); |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::readPixels(const Context *context, |
| const Rectangle &area, |
| GLenum format, |
| GLenum type, |
| void *pixels) |
| { |
| ANGLE_TRY(mImpl->readPixels(context, area, format, type, pixels)); |
| |
| Buffer *unpackBuffer = context->getState().getTargetBuffer(BufferBinding::PixelUnpack); |
| if (unpackBuffer) |
| { |
| unpackBuffer->onDataChanged(); |
| } |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::blit(const Context *context, |
| const Rectangle &sourceArea, |
| const Rectangle &destArea, |
| GLbitfield mask, |
| GLenum filter) |
| { |
| GLbitfield blitMask = mask; |
| |
| // Note that blitting is called against draw framebuffer. |
| // See the code in gl::Context::blitFramebuffer. |
| if ((mask & GL_COLOR_BUFFER_BIT) && !hasEnabledDrawBuffer()) |
| { |
| blitMask &= ~GL_COLOR_BUFFER_BIT; |
| } |
| |
| if ((mask & GL_STENCIL_BUFFER_BIT) && mState.getStencilAttachment() == nullptr) |
| { |
| blitMask &= ~GL_STENCIL_BUFFER_BIT; |
| } |
| |
| if ((mask & GL_DEPTH_BUFFER_BIT) && mState.getDepthAttachment() == nullptr) |
| { |
| blitMask &= ~GL_DEPTH_BUFFER_BIT; |
| } |
| |
| if (!blitMask) |
| { |
| return angle::Result::Continue; |
| } |
| |
| return mImpl->blit(context, sourceArea, destArea, blitMask, filter); |
| } |
| |
| int Framebuffer::getSamples(const Context *context) |
| { |
| return (isComplete(context) ? getCachedSamples(context, AttachmentSampleType::Emulated) : 0); |
| } |
| |
| int Framebuffer::getResourceSamples(const Context *context) |
| { |
| return (isComplete(context) ? getCachedSamples(context, AttachmentSampleType::Resource) : 0); |
| } |
| |
| int Framebuffer::getCachedSamples(const Context *context, AttachmentSampleType sampleType) const |
| { |
| ASSERT(mCachedStatus.valid() && mCachedStatus.value() == GL_FRAMEBUFFER_COMPLETE); |
| |
| // For a complete framebuffer, all attachments must have the same sample count. |
| // In this case return the first nonzero sample size. |
| const auto *firstNonNullAttachment = mState.getFirstNonNullAttachment(); |
| if (firstNonNullAttachment) |
| { |
| ASSERT(firstNonNullAttachment->isAttached()); |
| if (sampleType == AttachmentSampleType::Resource) |
| { |
| return firstNonNullAttachment->getResourceSamples(); |
| } |
| else |
| { |
| ASSERT(sampleType == AttachmentSampleType::Emulated); |
| return firstNonNullAttachment->getSamples(); |
| } |
| } |
| |
| // No attachments found. |
| return 0; |
| } |
| |
| angle::Result Framebuffer::getSamplePosition(const Context *context, |
| size_t index, |
| GLfloat *xy) const |
| { |
| ANGLE_TRY(mImpl->getSamplePosition(context, index, xy)); |
| return angle::Result::Continue; |
| } |
| |
| bool Framebuffer::hasValidDepthStencil() const |
| { |
| return mState.getDepthStencilAttachment() != nullptr; |
| } |
| |
| void Framebuffer::setAttachment(const Context *context, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource) |
| { |
| setAttachment(context, type, binding, textureIndex, resource, |
| FramebufferAttachment::kDefaultNumViews, |
| FramebufferAttachment::kDefaultBaseViewIndex, false, |
| FramebufferAttachment::kDefaultRenderToTextureSamples); |
| } |
| |
| void Framebuffer::setAttachmentMultisample(const Context *context, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource, |
| GLsizei samples) |
| { |
| setAttachment(context, type, binding, textureIndex, resource, |
| FramebufferAttachment::kDefaultNumViews, |
| FramebufferAttachment::kDefaultBaseViewIndex, false, samples); |
| } |
| |
| void Framebuffer::setAttachment(const Context *context, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource, |
| GLsizei numViews, |
| GLuint baseViewIndex, |
| bool isMultiview, |
| GLsizei samples) |
| { |
| // Context may be null in unit tests. |
| if (!context || !context->isWebGL1()) |
| { |
| setAttachmentImpl(context, type, binding, textureIndex, resource, numViews, baseViewIndex, |
| isMultiview, samples); |
| return; |
| } |
| |
| switch (binding) |
| { |
| case GL_DEPTH_STENCIL: |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| mState.mWebGLDepthStencilAttachment.attach(context, type, binding, textureIndex, |
| resource, numViews, baseViewIndex, |
| isMultiview, samples); |
| break; |
| case GL_DEPTH: |
| case GL_DEPTH_ATTACHMENT: |
| mState.mWebGLDepthAttachment.attach(context, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| break; |
| case GL_STENCIL: |
| case GL_STENCIL_ATTACHMENT: |
| mState.mWebGLStencilAttachment.attach(context, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| break; |
| default: |
| setAttachmentImpl(context, type, binding, textureIndex, resource, numViews, |
| baseViewIndex, isMultiview, samples); |
| return; |
| } |
| |
| commitWebGL1DepthStencilIfConsistent(context, numViews, baseViewIndex, isMultiview, samples); |
| } |
| |
| void Framebuffer::setAttachmentMultiview(const Context *context, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource, |
| GLsizei numViews, |
| GLint baseViewIndex) |
| { |
| setAttachment(context, type, binding, textureIndex, resource, numViews, baseViewIndex, true, |
| FramebufferAttachment::kDefaultRenderToTextureSamples); |
| } |
| |
| void Framebuffer::commitWebGL1DepthStencilIfConsistent(const Context *context, |
| GLsizei numViews, |
| GLuint baseViewIndex, |
| bool isMultiview, |
| GLsizei samples) |
| { |
| int count = 0; |
| |
| std::array<FramebufferAttachment *, 3> attachments = {{&mState.mWebGLDepthStencilAttachment, |
| &mState.mWebGLDepthAttachment, |
| &mState.mWebGLStencilAttachment}}; |
| for (FramebufferAttachment *attachment : attachments) |
| { |
| if (attachment->isAttached()) |
| { |
| count++; |
| } |
| } |
| |
| mState.mWebGLDepthStencilConsistent = (count <= 1); |
| if (!mState.mWebGLDepthStencilConsistent) |
| { |
| // Inconsistent. |
| return; |
| } |
| |
| auto getImageIndexIfTextureAttachment = [](const FramebufferAttachment &attachment) { |
| if (attachment.type() == GL_TEXTURE) |
| { |
| return attachment.getTextureImageIndex(); |
| } |
| else |
| { |
| return ImageIndex(); |
| } |
| }; |
| |
| if (mState.mWebGLDepthAttachment.isAttached()) |
| { |
| const auto &depth = mState.mWebGLDepthAttachment; |
| setAttachmentImpl(context, depth.type(), GL_DEPTH_ATTACHMENT, |
| getImageIndexIfTextureAttachment(depth), depth.getResource(), numViews, |
| baseViewIndex, isMultiview, samples); |
| setAttachmentImpl(context, GL_NONE, GL_STENCIL_ATTACHMENT, ImageIndex(), nullptr, numViews, |
| baseViewIndex, isMultiview, samples); |
| } |
| else if (mState.mWebGLStencilAttachment.isAttached()) |
| { |
| const auto &stencil = mState.mWebGLStencilAttachment; |
| setAttachmentImpl(context, GL_NONE, GL_DEPTH_ATTACHMENT, ImageIndex(), nullptr, numViews, |
| baseViewIndex, isMultiview, samples); |
| setAttachmentImpl(context, stencil.type(), GL_STENCIL_ATTACHMENT, |
| getImageIndexIfTextureAttachment(stencil), stencil.getResource(), |
| numViews, baseViewIndex, isMultiview, samples); |
| } |
| else if (mState.mWebGLDepthStencilAttachment.isAttached()) |
| { |
| const auto &depthStencil = mState.mWebGLDepthStencilAttachment; |
| setAttachmentImpl(context, depthStencil.type(), GL_DEPTH_ATTACHMENT, |
| getImageIndexIfTextureAttachment(depthStencil), |
| depthStencil.getResource(), numViews, baseViewIndex, isMultiview, |
| samples); |
| setAttachmentImpl(context, depthStencil.type(), GL_STENCIL_ATTACHMENT, |
| getImageIndexIfTextureAttachment(depthStencil), |
| depthStencil.getResource(), numViews, baseViewIndex, isMultiview, |
| samples); |
| } |
| else |
| { |
| setAttachmentImpl(context, GL_NONE, GL_DEPTH_ATTACHMENT, ImageIndex(), nullptr, numViews, |
| baseViewIndex, isMultiview, samples); |
| setAttachmentImpl(context, GL_NONE, GL_STENCIL_ATTACHMENT, ImageIndex(), nullptr, numViews, |
| baseViewIndex, isMultiview, samples); |
| } |
| } |
| |
| void Framebuffer::setAttachmentImpl(const Context *context, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource, |
| GLsizei numViews, |
| GLuint baseViewIndex, |
| bool isMultiview, |
| GLsizei samples) |
| { |
| switch (binding) |
| { |
| case GL_DEPTH_STENCIL: |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| updateAttachment(context, &mState.mDepthAttachment, DIRTY_BIT_DEPTH_ATTACHMENT, |
| &mDirtyDepthAttachmentBinding, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| updateAttachment(context, &mState.mStencilAttachment, DIRTY_BIT_STENCIL_ATTACHMENT, |
| &mDirtyStencilAttachmentBinding, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| break; |
| |
| case GL_DEPTH: |
| case GL_DEPTH_ATTACHMENT: |
| updateAttachment(context, &mState.mDepthAttachment, DIRTY_BIT_DEPTH_ATTACHMENT, |
| &mDirtyDepthAttachmentBinding, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| break; |
| |
| case GL_STENCIL: |
| case GL_STENCIL_ATTACHMENT: |
| updateAttachment(context, &mState.mStencilAttachment, DIRTY_BIT_STENCIL_ATTACHMENT, |
| &mDirtyStencilAttachmentBinding, type, binding, textureIndex, resource, |
| numViews, baseViewIndex, isMultiview, samples); |
| break; |
| |
| case GL_BACK: |
| updateAttachment(context, &mState.mColorAttachments[0], DIRTY_BIT_COLOR_ATTACHMENT_0, |
| &mDirtyColorAttachmentBindings[0], type, binding, textureIndex, |
| resource, numViews, baseViewIndex, isMultiview, samples); |
| break; |
| |
| default: |
| { |
| size_t colorIndex = binding - GL_COLOR_ATTACHMENT0; |
| ASSERT(colorIndex < mState.mColorAttachments.size()); |
| size_t dirtyBit = DIRTY_BIT_COLOR_ATTACHMENT_0 + colorIndex; |
| updateAttachment(context, &mState.mColorAttachments[colorIndex], dirtyBit, |
| &mDirtyColorAttachmentBindings[colorIndex], type, binding, |
| textureIndex, resource, numViews, baseViewIndex, isMultiview, samples); |
| |
| if (!resource) |
| { |
| mColorAttachmentBits.reset(colorIndex); |
| mFloat32ColorAttachmentBits.reset(colorIndex); |
| } |
| else |
| { |
| mColorAttachmentBits.set(colorIndex); |
| updateFloat32ColorAttachmentBits( |
| colorIndex, resource->getAttachmentFormat(binding, textureIndex).info); |
| } |
| |
| // TODO(jmadill): ASSERT instead of checking the attachment exists in |
| // formsRenderingFeedbackLoopWith |
| bool enabled = (type != GL_NONE && getDrawBufferState(colorIndex) != GL_NONE); |
| mState.mEnabledDrawBuffers.set(colorIndex, enabled); |
| SetComponentTypeMask(getDrawbufferWriteType(colorIndex), colorIndex, |
| &mState.mDrawBufferTypeMask); |
| } |
| break; |
| } |
| } |
| |
| void Framebuffer::updateAttachment(const Context *context, |
| FramebufferAttachment *attachment, |
| size_t dirtyBit, |
| angle::ObserverBinding *onDirtyBinding, |
| GLenum type, |
| GLenum binding, |
| const ImageIndex &textureIndex, |
| FramebufferAttachmentObject *resource, |
| GLsizei numViews, |
| GLuint baseViewIndex, |
| bool isMultiview, |
| GLsizei samples) |
| { |
| attachment->attach(context, type, binding, textureIndex, resource, numViews, baseViewIndex, |
| isMultiview, samples); |
| mDirtyBits.set(dirtyBit); |
| mState.mResourceNeedsInit.set(dirtyBit, attachment->initState() == InitState::MayNeedInit); |
| onDirtyBinding->bind(resource); |
| |
| invalidateCompletenessCache(); |
| } |
| |
| void Framebuffer::resetAttachment(const Context *context, GLenum binding) |
| { |
| setAttachment(context, GL_NONE, binding, ImageIndex(), nullptr); |
| } |
| |
| angle::Result Framebuffer::syncState(const Context *context) |
| { |
| if (mDirtyBits.any()) |
| { |
| mDirtyBitsGuard = mDirtyBits; |
| ANGLE_TRY(mImpl->syncState(context, mDirtyBits)); |
| mDirtyBits.reset(); |
| mDirtyBitsGuard.reset(); |
| } |
| return angle::Result::Continue; |
| } |
| |
| void Framebuffer::onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) |
| { |
| if (message != angle::SubjectMessage::SubjectChanged) |
| { |
| // This can be triggered by SubImage calls for Textures. |
| if (message == angle::SubjectMessage::ContentsChanged) |
| { |
| mDirtyBits.set(DIRTY_BIT_COLOR_BUFFER_CONTENTS_0 + index); |
| onStateChange(angle::SubjectMessage::DirtyBitsFlagged); |
| return; |
| } |
| |
| // This can be triggered by the GL back-end TextureGL class. |
| ASSERT(message == angle::SubjectMessage::DirtyBitsFlagged); |
| return; |
| } |
| |
| ASSERT(!mDirtyBitsGuard.valid() || mDirtyBitsGuard.value().test(index)); |
| mDirtyBits.set(index); |
| |
| invalidateCompletenessCache(); |
| |
| FramebufferAttachment *attachment = getAttachmentFromSubjectIndex(index); |
| |
| // Mark the appropriate init flag. |
| mState.mResourceNeedsInit.set(index, attachment->initState() == InitState::MayNeedInit); |
| |
| // Update mFloat32ColorAttachmentBits Cache |
| if (index < DIRTY_BIT_COLOR_ATTACHMENT_MAX) |
| { |
| ASSERT(index != DIRTY_BIT_DEPTH_ATTACHMENT); |
| ASSERT(index != DIRTY_BIT_STENCIL_ATTACHMENT); |
| updateFloat32ColorAttachmentBits(index - DIRTY_BIT_COLOR_ATTACHMENT_0, |
| attachment->getFormat().info); |
| } |
| } |
| |
| FramebufferAttachment *Framebuffer::getAttachmentFromSubjectIndex(angle::SubjectIndex index) |
| { |
| switch (index) |
| { |
| case DIRTY_BIT_DEPTH_ATTACHMENT: |
| return &mState.mDepthAttachment; |
| case DIRTY_BIT_STENCIL_ATTACHMENT: |
| return &mState.mStencilAttachment; |
| default: |
| size_t colorIndex = (index - DIRTY_BIT_COLOR_ATTACHMENT_0); |
| ASSERT(colorIndex < mState.mColorAttachments.size()); |
| return &mState.mColorAttachments[colorIndex]; |
| } |
| } |
| |
| bool Framebuffer::formsRenderingFeedbackLoopWith(const Context *context) const |
| { |
| const State &state = context->getState(); |
| const Program *program = state.getProgram(); |
| |
| // TODO(jmadill): Default framebuffer feedback loops. |
| if (mState.isDefault()) |
| { |
| return false; |
| } |
| |
| const FramebufferAttachment *depth = getDepthAttachment(); |
| const FramebufferAttachment *stencil = getStencilAttachment(); |
| |
| const bool checkDepth = depth && depth->type() == GL_TEXTURE; |
| // Skip the feedback loop check for stencil if depth/stencil point to the same resource. |
| const bool checkStencil = |
| (stencil && stencil->type() == GL_TEXTURE) && (!depth || *stencil != *depth); |
| |
| const gl::ActiveTextureMask &activeTextures = program->getActiveSamplersMask(); |
| const gl::ActiveTexturePointerArray &textures = state.getActiveTexturesCache(); |
| |
| for (size_t textureUnit : activeTextures) |
| { |
| Texture *texture = textures[textureUnit]; |
| |
| if (texture == nullptr) |
| { |
| continue; |
| } |
| |
| // Depth and stencil attachment form feedback loops |
| // Regardless of if enabled or masked. |
| if (checkDepth) |
| { |
| if (texture->getId() == depth->id()) |
| { |
| return true; |
| } |
| } |
| |
| if (checkStencil) |
| { |
| if (texture->getId() == stencil->id()) |
| { |
| return true; |
| } |
| } |
| |
| // Check if any color attachment forms a feedback loop. |
| for (size_t drawIndex : mColorAttachmentBits) |
| { |
| const FramebufferAttachment &attachment = mState.mColorAttachments[drawIndex]; |
| ASSERT(attachment.isAttached()); |
| |
| if (attachment.isTextureWithId(texture->id())) |
| { |
| // TODO(jmadill): Check for appropriate overlap. |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| bool Framebuffer::formsCopyingFeedbackLoopWith(TextureID copyTextureID, |
| GLint copyTextureLevel, |
| GLint copyTextureLayer) const |
| { |
| if (mState.isDefault()) |
| { |
| // It seems impossible to form a texture copying feedback loop with the default FBO. |
| return false; |
| } |
| |
| const FramebufferAttachment *readAttachment = getReadColorAttachment(); |
| ASSERT(readAttachment); |
| |
| if (readAttachment->isTextureWithId(copyTextureID)) |
| { |
| const auto &imageIndex = readAttachment->getTextureImageIndex(); |
| if (imageIndex.getLevelIndex() == copyTextureLevel) |
| { |
| // Check 3D/Array texture layers. |
| return !imageIndex.hasLayer() || copyTextureLayer == ImageIndex::kEntireLevel || |
| imageIndex.getLayerIndex() == copyTextureLayer; |
| } |
| } |
| return false; |
| } |
| |
| GLint Framebuffer::getDefaultWidth() const |
| { |
| return mState.getDefaultWidth(); |
| } |
| |
| GLint Framebuffer::getDefaultHeight() const |
| { |
| return mState.getDefaultHeight(); |
| } |
| |
| GLint Framebuffer::getDefaultSamples() const |
| { |
| return mState.getDefaultSamples(); |
| } |
| |
| bool Framebuffer::getDefaultFixedSampleLocations() const |
| { |
| return mState.getDefaultFixedSampleLocations(); |
| } |
| |
| GLint Framebuffer::getDefaultLayers() const |
| { |
| return mState.getDefaultLayers(); |
| } |
| |
| void Framebuffer::setDefaultWidth(const Context *context, GLint defaultWidth) |
| { |
| mState.mDefaultWidth = defaultWidth; |
| mDirtyBits.set(DIRTY_BIT_DEFAULT_WIDTH); |
| invalidateCompletenessCache(); |
| } |
| |
| void Framebuffer::setDefaultHeight(const Context *context, GLint defaultHeight) |
| { |
| mState.mDefaultHeight = defaultHeight; |
| mDirtyBits.set(DIRTY_BIT_DEFAULT_HEIGHT); |
| invalidateCompletenessCache(); |
| } |
| |
| void Framebuffer::setDefaultSamples(const Context *context, GLint defaultSamples) |
| { |
| mState.mDefaultSamples = defaultSamples; |
| mDirtyBits.set(DIRTY_BIT_DEFAULT_SAMPLES); |
| invalidateCompletenessCache(); |
| } |
| |
| void Framebuffer::setDefaultFixedSampleLocations(const Context *context, |
| bool defaultFixedSampleLocations) |
| { |
| mState.mDefaultFixedSampleLocations = defaultFixedSampleLocations; |
| mDirtyBits.set(DIRTY_BIT_DEFAULT_FIXED_SAMPLE_LOCATIONS); |
| invalidateCompletenessCache(); |
| } |
| |
| void Framebuffer::setDefaultLayers(GLint defaultLayers) |
| { |
| mState.mDefaultLayers = defaultLayers; |
| mDirtyBits.set(DIRTY_BIT_DEFAULT_LAYERS); |
| } |
| |
| GLsizei Framebuffer::getNumViews() const |
| { |
| return mState.getNumViews(); |
| } |
| |
| GLint Framebuffer::getBaseViewIndex() const |
| { |
| return mState.getBaseViewIndex(); |
| } |
| |
| bool Framebuffer::isMultiview() const |
| { |
| return mState.isMultiview(); |
| } |
| |
| bool Framebuffer::readDisallowedByMultiview() const |
| { |
| return (mState.isMultiview() && mState.getNumViews() > 1); |
| } |
| |
| angle::Result Framebuffer::ensureClearAttachmentsInitialized(const Context *context, |
| GLbitfield mask) |
| { |
| const auto &glState = context->getState(); |
| if (!context->isRobustResourceInitEnabled() || glState.isRasterizerDiscardEnabled()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| const BlendState &blend = glState.getBlendState(); |
| const DepthStencilState &depthStencil = glState.getDepthStencilState(); |
| |
| bool color = (mask & GL_COLOR_BUFFER_BIT) != 0 && !IsColorMaskedOut(blend); |
| bool depth = (mask & GL_DEPTH_BUFFER_BIT) != 0 && !IsDepthMaskedOut(depthStencil); |
| bool stencil = (mask & GL_STENCIL_BUFFER_BIT) != 0 && !IsStencilMaskedOut(depthStencil); |
| |
| if (!color && !depth && !stencil) |
| { |
| return angle::Result::Continue; |
| } |
| |
| if (partialClearNeedsInit(context, color, depth, stencil)) |
| { |
| ANGLE_TRY(ensureDrawAttachmentsInitialized(context)); |
| } |
| |
| // If the impl encounters an error during a a full (non-partial) clear, the attachments will |
| // still be marked initialized. This simplifies design, allowing this method to be called before |
| // the clear. |
| markDrawAttachmentsInitialized(color, depth, stencil); |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::ensureClearBufferAttachmentsInitialized(const Context *context, |
| GLenum buffer, |
| GLint drawbuffer) |
| { |
| if (!context->isRobustResourceInitEnabled() || |
| context->getState().isRasterizerDiscardEnabled() || IsClearBufferMaskedOut(context, buffer)) |
| { |
| return angle::Result::Continue; |
| } |
| |
| if (partialBufferClearNeedsInit(context, buffer)) |
| { |
| ANGLE_TRY(ensureBufferInitialized(context, buffer, drawbuffer)); |
| } |
| |
| // If the impl encounters an error during a a full (non-partial) clear, the attachments will |
| // still be marked initialized. This simplifies design, allowing this method to be called before |
| // the clear. |
| markBufferInitialized(buffer, drawbuffer); |
| |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::ensureDrawAttachmentsInitialized(const Context *context) |
| { |
| if (!context->isRobustResourceInitEnabled()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| // Note: we don't actually filter by the draw attachment enum. Just init everything. |
| for (size_t bit : mState.mResourceNeedsInit) |
| { |
| switch (bit) |
| { |
| case DIRTY_BIT_DEPTH_ATTACHMENT: |
| ANGLE_TRY(InitAttachment(context, &mState.mDepthAttachment)); |
| break; |
| case DIRTY_BIT_STENCIL_ATTACHMENT: |
| ANGLE_TRY(InitAttachment(context, &mState.mStencilAttachment)); |
| break; |
| default: |
| ANGLE_TRY(InitAttachment(context, &mState.mColorAttachments[bit])); |
| break; |
| } |
| } |
| |
| mState.mResourceNeedsInit.reset(); |
| return angle::Result::Continue; |
| } |
| |
| angle::Result Framebuffer::ensureReadAttachmentsInitialized(const Context *context) |
| { |
| ASSERT(context->isRobustResourceInitEnabled()); |
| |
| if (mState.mResourceNeedsInit.none()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| if (mState.mReadBufferState != GL_NONE) |
| { |
| if (isDefault()) |
| { |
| if (!mState.mDefaultFramebufferReadAttachmentInitialized) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mDefaultFramebufferReadAttachment)); |
| mState.mDefaultFramebufferReadAttachmentInitialized = true; |
| } |
| } |
| else |
| { |
| size_t readIndex = mState.getReadIndex(); |
| if (mState.mResourceNeedsInit[readIndex]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mColorAttachments[readIndex])); |
| mState.mResourceNeedsInit.reset(readIndex); |
| } |
| } |
| } |
| |
| // Conservatively init depth since it can be read by BlitFramebuffer. |
| if (hasDepth()) |
| { |
| if (mState.mResourceNeedsInit[DIRTY_BIT_DEPTH_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mDepthAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| } |
| |
| // Conservatively init stencil since it can be read by BlitFramebuffer. |
| if (hasStencil()) |
| { |
| if (mState.mResourceNeedsInit[DIRTY_BIT_STENCIL_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mStencilAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| } |
| |
| return angle::Result::Continue; |
| } |
| |
| void Framebuffer::markDrawAttachmentsInitialized(bool color, bool depth, bool stencil) |
| { |
| // Mark attachments as initialized. |
| if (color) |
| { |
| for (auto colorIndex : mState.mEnabledDrawBuffers) |
| { |
| auto &colorAttachment = mState.mColorAttachments[colorIndex]; |
| ASSERT(colorAttachment.isAttached()); |
| colorAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(colorIndex); |
| } |
| } |
| |
| if (depth && mState.mDepthAttachment.isAttached()) |
| { |
| mState.mDepthAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| |
| if (stencil && mState.mStencilAttachment.isAttached()) |
| { |
| mState.mStencilAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| } |
| |
| void Framebuffer::markBufferInitialized(GLenum bufferType, GLint bufferIndex) |
| { |
| switch (bufferType) |
| { |
| case GL_COLOR: |
| { |
| ASSERT(bufferIndex < static_cast<GLint>(mState.mColorAttachments.size())); |
| if (mState.mColorAttachments[bufferIndex].isAttached()) |
| { |
| mState.mColorAttachments[bufferIndex].setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(bufferIndex); |
| } |
| break; |
| } |
| case GL_DEPTH: |
| { |
| if (mState.mDepthAttachment.isAttached()) |
| { |
| mState.mDepthAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| break; |
| } |
| case GL_STENCIL: |
| { |
| if (mState.mStencilAttachment.isAttached()) |
| { |
| mState.mStencilAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| break; |
| } |
| case GL_DEPTH_STENCIL: |
| { |
| if (mState.mDepthAttachment.isAttached()) |
| { |
| mState.mDepthAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| if (mState.mStencilAttachment.isAttached()) |
| { |
| mState.mStencilAttachment.setInitState(InitState::Initialized); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| break; |
| } |
| } |
| |
| Box Framebuffer::getDimensions() const |
| { |
| return mState.getDimensions(); |
| } |
| |
| Extents Framebuffer::getExtents() const |
| { |
| return mState.getExtents(); |
| } |
| |
| angle::Result Framebuffer::ensureBufferInitialized(const Context *context, |
| GLenum bufferType, |
| GLint bufferIndex) |
| { |
| ASSERT(context->isRobustResourceInitEnabled()); |
| |
| if (mState.mResourceNeedsInit.none()) |
| { |
| return angle::Result::Continue; |
| } |
| |
| switch (bufferType) |
| { |
| case GL_COLOR: |
| { |
| ASSERT(bufferIndex < static_cast<GLint>(mState.mColorAttachments.size())); |
| if (mState.mResourceNeedsInit[bufferIndex]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mColorAttachments[bufferIndex])); |
| mState.mResourceNeedsInit.reset(bufferIndex); |
| } |
| break; |
| } |
| case GL_DEPTH: |
| { |
| if (mState.mResourceNeedsInit[DIRTY_BIT_DEPTH_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mDepthAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| break; |
| } |
| case GL_STENCIL: |
| { |
| if (mState.mResourceNeedsInit[DIRTY_BIT_STENCIL_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mStencilAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| break; |
| } |
| case GL_DEPTH_STENCIL: |
| { |
| if (mState.mResourceNeedsInit[DIRTY_BIT_DEPTH_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mDepthAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_DEPTH_ATTACHMENT); |
| } |
| if (mState.mResourceNeedsInit[DIRTY_BIT_STENCIL_ATTACHMENT]) |
| { |
| ANGLE_TRY(InitAttachment(context, &mState.mStencilAttachment)); |
| mState.mResourceNeedsInit.reset(DIRTY_BIT_STENCIL_ATTACHMENT); |
| } |
| break; |
| } |
| default: |
| UNREACHABLE(); |
| break; |
| } |
| |
| return angle::Result::Continue; |
| } |
| |
| bool Framebuffer::partialBufferClearNeedsInit(const Context *context, GLenum bufferType) |
| { |
| if (!context->isRobustResourceInitEnabled() || mState.mResourceNeedsInit.none()) |
| { |
| return false; |
| } |
| |
| switch (bufferType) |
| { |
| case GL_COLOR: |
| return partialClearNeedsInit(context, true, false, false); |
| case GL_DEPTH: |
| return partialClearNeedsInit(context, false, true, false); |
| case GL_STENCIL: |
| return partialClearNeedsInit(context, false, false, true); |
| case GL_DEPTH_STENCIL: |
| return partialClearNeedsInit(context, false, true, true); |
| default: |
| UNREACHABLE(); |
| return false; |
| } |
| } |
| } // namespace gl |
