зеркало из https://github.com/mozilla/gecko-dev.git
1211 строки
37 KiB
C++
1211 строки
37 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLFramebuffer.h"
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "nsPrintfCString.h"
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#include "WebGLContext.h"
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#include "WebGLContextUtils.h"
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#include "WebGLExtensions.h"
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#include "WebGLRenderbuffer.h"
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#include "WebGLTexture.h"
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namespace mozilla {
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WebGLFBAttachPoint::WebGLFBAttachPoint(WebGLFramebuffer* fb, GLenum attachmentPoint)
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: mFB(fb)
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, mAttachmentPoint(attachmentPoint)
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, mTexImageTarget(LOCAL_GL_NONE)
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{ }
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WebGLFBAttachPoint::~WebGLFBAttachPoint()
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{
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MOZ_ASSERT(!mRenderbufferPtr);
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MOZ_ASSERT(!mTexturePtr);
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}
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void
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WebGLFBAttachPoint::Unlink()
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{
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Clear();
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}
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bool
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WebGLFBAttachPoint::IsDeleteRequested() const
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{
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return Texture() ? Texture()->IsDeleteRequested()
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: Renderbuffer() ? Renderbuffer()->IsDeleteRequested()
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: false;
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}
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bool
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WebGLFBAttachPoint::IsDefined() const
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{
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/*
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return (Renderbuffer() && Renderbuffer()->IsDefined()) ||
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(Texture() && Texture()->ImageInfoAt(mTexImageTarget,
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mTexImageLevel).IsDefined());
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*/
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return (Renderbuffer() || Texture());
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}
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const webgl::FormatUsageInfo*
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WebGLFBAttachPoint::Format() const
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{
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MOZ_ASSERT(IsDefined());
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if (Texture())
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return Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).mFormat;
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if (Renderbuffer())
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return Renderbuffer()->Format();
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return nullptr;
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}
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bool
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WebGLFBAttachPoint::HasAlpha() const
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{
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return Format()->format->hasAlpha;
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}
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const webgl::FormatUsageInfo*
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WebGLFramebuffer::GetFormatForAttachment(const WebGLFBAttachPoint& attachment) const
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{
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MOZ_ASSERT(attachment.IsDefined());
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MOZ_ASSERT(attachment.Texture() || attachment.Renderbuffer());
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return attachment.Format();
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}
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bool
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WebGLFBAttachPoint::IsReadableFloat() const
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{
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auto formatUsage = Format();
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MOZ_ASSERT(formatUsage);
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auto format = formatUsage->format;
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if (!format->isColorFormat)
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return false;
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return format->componentType == webgl::ComponentType::Float;
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}
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void
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WebGLFBAttachPoint::Clear()
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{
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if (mRenderbufferPtr) {
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MOZ_ASSERT(!mTexturePtr);
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mRenderbufferPtr->UnmarkAttachment(*this);
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} else if (mTexturePtr) {
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mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel).RemoveAttachPoint(this);
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}
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mTexturePtr = nullptr;
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mRenderbufferPtr = nullptr;
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OnBackingStoreRespecified();
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}
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void
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WebGLFBAttachPoint::SetTexImage(WebGLTexture* tex, TexImageTarget target, GLint level)
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{
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SetTexImageLayer(tex, target, level, 0);
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}
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void
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WebGLFBAttachPoint::SetTexImageLayer(WebGLTexture* tex, TexImageTarget target,
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GLint level, GLint layer)
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{
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Clear();
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mTexturePtr = tex;
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mTexImageTarget = target;
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mTexImageLevel = level;
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mTexImageLayer = layer;
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if (mTexturePtr) {
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mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel).AddAttachPoint(this);
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}
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}
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void
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WebGLFBAttachPoint::SetRenderbuffer(WebGLRenderbuffer* rb)
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{
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Clear();
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mRenderbufferPtr = rb;
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if (mRenderbufferPtr) {
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mRenderbufferPtr->MarkAttachment(*this);
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}
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}
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bool
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WebGLFBAttachPoint::HasUninitializedImageData() const
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{
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if (!HasImage())
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return false;
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if (mRenderbufferPtr)
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return mRenderbufferPtr->HasUninitializedImageData();
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MOZ_ASSERT(mTexturePtr);
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auto& imageInfo = mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel);
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MOZ_ASSERT(imageInfo.IsDefined());
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return !imageInfo.IsDataInitialized();
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}
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void
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WebGLFBAttachPoint::SetImageDataStatus(WebGLImageDataStatus newStatus)
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{
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if (!HasImage())
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return;
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if (mRenderbufferPtr) {
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mRenderbufferPtr->mImageDataStatus = newStatus;
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return;
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}
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MOZ_ASSERT(mTexturePtr);
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auto& imageInfo = mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel);
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MOZ_ASSERT(imageInfo.IsDefined());
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const bool isDataInitialized = (newStatus == WebGLImageDataStatus::InitializedImageData);
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imageInfo.SetIsDataInitialized(isDataInitialized, mTexturePtr);
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}
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bool
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WebGLFBAttachPoint::HasImage() const
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{
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if (Texture() && Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).IsDefined())
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return true;
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if (Renderbuffer() && Renderbuffer()->IsDefined())
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return true;
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return false;
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}
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void
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WebGLFBAttachPoint::Size(uint32_t* const out_width, uint32_t* const out_height) const
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{
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MOZ_ASSERT(HasImage());
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if (Renderbuffer()) {
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*out_width = Renderbuffer()->Width();
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*out_height = Renderbuffer()->Height();
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return;
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}
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MOZ_ASSERT(Texture());
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MOZ_ASSERT(Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).IsDefined());
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const auto& imageInfo = Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel);
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*out_width = imageInfo.mWidth;
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*out_height = imageInfo.mHeight;
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}
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void
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WebGLFBAttachPoint::OnBackingStoreRespecified() const
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{
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mFB->InvalidateFramebufferStatus();
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}
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void
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WebGLFBAttachPoint::AttachmentName(nsCString* out) const
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{
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switch (mAttachmentPoint) {
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case LOCAL_GL_DEPTH_ATTACHMENT:
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out->AssignLiteral("DEPTH_ATTACHMENT");
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return;
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case LOCAL_GL_STENCIL_ATTACHMENT:
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out->AssignLiteral("STENCIL_ATTACHMENT");
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return;
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case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
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out->AssignLiteral("DEPTH_STENCIL_ATTACHMENT");
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return;
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default:
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MOZ_ASSERT(mAttachmentPoint >= LOCAL_GL_COLOR_ATTACHMENT0);
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out->AssignLiteral("COLOR_ATTACHMENT");
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const uint32_t n = mAttachmentPoint - LOCAL_GL_COLOR_ATTACHMENT0;
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out->AppendInt(n);
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return;
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}
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}
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bool
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WebGLFBAttachPoint::IsComplete(WebGLContext* webgl, nsCString* const out_info) const
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{
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MOZ_ASSERT(IsDefined());
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if (!HasImage()) {
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AttachmentName(out_info);
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out_info->AppendLiteral("'s image is not defined");
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return false;
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}
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uint32_t width;
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uint32_t height;
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Size(&width, &height);
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if (!width || !height) {
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AttachmentName(out_info);
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out_info->AppendLiteral(" has no width or height");
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return false;
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}
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const auto formatUsage = Format();
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if (!formatUsage->isRenderable) {
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nsAutoCString attachName;
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AttachmentName(&attachName);
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*out_info = nsPrintfCString("%s has an effective format of %s, which is not"
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" renderable",
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attachName.BeginReading(), formatUsage->format->name);
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return false;
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}
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const auto format = formatUsage->format;
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bool hasRequiredBits;
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switch (mAttachmentPoint) {
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case LOCAL_GL_DEPTH_ATTACHMENT:
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hasRequiredBits = format->hasDepth;
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break;
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case LOCAL_GL_STENCIL_ATTACHMENT:
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hasRequiredBits = format->hasStencil;
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break;
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case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
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MOZ_ASSERT(!webgl->IsWebGL2());
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hasRequiredBits = (format->hasDepth && format->hasStencil);
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break;
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default:
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MOZ_ASSERT(mAttachmentPoint >= LOCAL_GL_COLOR_ATTACHMENT0);
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hasRequiredBits = format->isColorFormat;
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break;
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}
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if (!hasRequiredBits) {
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AttachmentName(out_info);
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out_info->AppendLiteral("'s format is missing required color/depth/stencil bits");
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return false;
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}
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if (!webgl->IsWebGL2()) {
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bool hasSurplusPlanes = false;
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switch (mAttachmentPoint) {
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case LOCAL_GL_DEPTH_ATTACHMENT:
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hasSurplusPlanes = format->hasStencil;
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break;
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case LOCAL_GL_STENCIL_ATTACHMENT:
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hasSurplusPlanes = format->hasDepth;
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break;
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}
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if (hasSurplusPlanes) {
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AttachmentName(out_info);
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out_info->AppendLiteral("'s format has depth or stencil bits when it"
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" shouldn't");
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return false;
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}
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}
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return true;
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}
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void
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WebGLFBAttachPoint::FinalizeAttachment(gl::GLContext* gl, GLenum attachment) const
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{
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if (!HasImage()) {
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switch (attachment) {
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case LOCAL_GL_DEPTH_ATTACHMENT:
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case LOCAL_GL_STENCIL_ATTACHMENT:
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case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
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break;
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default:
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gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, attachment,
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LOCAL_GL_RENDERBUFFER, 0);
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break;
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}
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return;
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}
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MOZ_ASSERT(HasImage());
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if (Texture()) {
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MOZ_ASSERT(gl == Texture()->mContext->GL());
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const GLenum imageTarget = ImageTarget().get();
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const GLint mipLevel = MipLevel();
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const GLint layer = Layer();
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const GLuint glName = Texture()->mGLName;
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switch (imageTarget) {
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case LOCAL_GL_TEXTURE_2D:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
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case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
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case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
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if (attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
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gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
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imageTarget, glName, mipLevel);
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gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
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LOCAL_GL_STENCIL_ATTACHMENT, imageTarget,
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glName, mipLevel);
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} else {
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gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, attachment, imageTarget,
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glName, mipLevel);
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}
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break;
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case LOCAL_GL_TEXTURE_2D_ARRAY:
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case LOCAL_GL_TEXTURE_3D:
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if (attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
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gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER,
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LOCAL_GL_DEPTH_ATTACHMENT, glName, mipLevel,
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layer);
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gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER,
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LOCAL_GL_STENCIL_ATTACHMENT, glName,
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mipLevel, layer);
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} else {
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gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER, attachment, glName,
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mipLevel, layer);
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}
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break;
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}
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return ;
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}
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if (Renderbuffer()) {
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Renderbuffer()->FramebufferRenderbuffer(attachment);
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return;
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}
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MOZ_CRASH();
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}
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JS::Value
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WebGLFBAttachPoint::GetParameter(const char* funcName, WebGLContext* webgl, JSContext* cx,
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GLenum target, GLenum attachment, GLenum pname,
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ErrorResult* const out_error)
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{
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const bool hasAttachment = (mTexturePtr || mRenderbufferPtr);
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if (!hasAttachment) {
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// Divergent between GLES 3 and 2.
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// GLES 2.0.25 p127:
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// "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then querying any
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// other pname will generate INVALID_ENUM."
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// GLES 3.0.4 p240:
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// "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, no framebuffer is
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// bound to target. In this case querying pname
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// FRAMEBUFFER_ATTACHMENT_OBJECT_NAME will return zero, and all other queries
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// will generate an INVALID_OPERATION error."
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switch (pname) {
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
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return JS::Int32Value(LOCAL_GL_NONE);
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
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if (webgl->IsWebGL2())
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return JS::NullValue();
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break;
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default:
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break;
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}
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if (webgl->IsWebGL2()) {
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webgl->ErrorInvalidOperation("%s: No attachment at %s.", funcName,
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webgl->EnumName(attachment));
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} else {
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webgl->ErrorInvalidEnum("%s: No attachment at %s.", funcName,
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webgl->EnumName(attachment));
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}
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return JS::NullValue();
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}
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bool isPNameValid = false;
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switch (pname) {
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
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return JS::Int32Value(mTexturePtr ? LOCAL_GL_TEXTURE
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: LOCAL_GL_RENDERBUFFER);
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
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return (mTexturePtr ? webgl->WebGLObjectAsJSValue(cx, mTexturePtr.get(),
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*out_error)
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: webgl->WebGLObjectAsJSValue(cx, mRenderbufferPtr.get(),
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*out_error));
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////////////////
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
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isPNameValid = true;
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break;
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
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MOZ_ASSERT(attachment != LOCAL_GL_DEPTH_STENCIL_ATTACHMENT);
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isPNameValid = true;
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break;
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
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if (webgl->IsWebGL2() ||
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webgl->IsExtensionEnabled(WebGLExtensionID::EXT_sRGB))
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{
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const auto format = Format()->format;
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return JS::Int32Value(format->isSRGB ? LOCAL_GL_SRGB
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: LOCAL_GL_LINEAR);
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}
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break;
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////////////////
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
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if (mTexturePtr)
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return JS::Int32Value(MipLevel());
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break;
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
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if (mTexturePtr) {
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GLenum face = 0;
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if (mTexturePtr->Target() == LOCAL_GL_TEXTURE_CUBE_MAP) {
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face = ImageTarget().get();
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}
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return JS::Int32Value(face);
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}
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break;
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case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER:
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if (mTexturePtr) {
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int32_t layer = 0;
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if (ImageTarget() == LOCAL_GL_TEXTURE_2D_ARRAY ||
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ImageTarget() == LOCAL_GL_TEXTURE_3D)
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{
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layer = Layer();
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}
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return JS::Int32Value(layer);
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}
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break;
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}
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if (!isPNameValid) {
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webgl->ErrorInvalidEnum("%s: Invalid pname: 0x%04x", funcName, pname);
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return JS::NullValue();
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}
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gl::GLContext* gl = webgl->GL();
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gl->MakeCurrent();
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GLint ret = 0;
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gl->fGetFramebufferAttachmentParameteriv(target, attachment, pname, &ret);
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return JS::Int32Value(ret);
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}
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////////////////////////////////////////////////////////////////////////////////
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// WebGLFramebuffer
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WebGLFramebuffer::WebGLFramebuffer(WebGLContext* webgl, GLuint fbo)
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: WebGLContextBoundObject(webgl)
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, mGLName(fbo)
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, mIsKnownFBComplete(false)
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, mReadBufferMode(LOCAL_GL_COLOR_ATTACHMENT0)
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, mColorAttachment0(this, LOCAL_GL_COLOR_ATTACHMENT0)
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, mDepthAttachment(this, LOCAL_GL_DEPTH_ATTACHMENT)
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, mStencilAttachment(this, LOCAL_GL_STENCIL_ATTACHMENT)
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, mDepthStencilAttachment(this, LOCAL_GL_DEPTH_STENCIL_ATTACHMENT)
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, mMoreColorAttachments(webgl->mGLMaxColorAttachments)
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, mDrawBuffers(1, LOCAL_GL_COLOR_ATTACHMENT0)
|
||
#ifdef ANDROID
|
||
, mIsFB(false)
|
||
#endif
|
||
{
|
||
mContext->mFramebuffers.insertBack(this);
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::Delete()
|
||
{
|
||
mColorAttachment0.Clear();
|
||
mDepthAttachment.Clear();
|
||
mStencilAttachment.Clear();
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
cur.Clear();
|
||
}
|
||
|
||
mContext->MakeContextCurrent();
|
||
mContext->gl->fDeleteFramebuffers(1, &mGLName);
|
||
|
||
LinkedListElement<WebGLFramebuffer>::removeFrom(mContext->mFramebuffers);
|
||
|
||
#ifdef ANDROID
|
||
mIsFB = false;
|
||
#endif
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferRenderbuffer(GLenum attachment, RBTarget rbtarget,
|
||
WebGLRenderbuffer* rb)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!mContext->ValidateObjectAllowNull("framebufferRenderbuffer: renderbuffer", rb))
|
||
return;
|
||
|
||
// `attachPointEnum` is validated by ValidateFramebufferAttachment().
|
||
|
||
RefPtr<WebGLRenderbuffer> rb_ = rb; // Bug 1201275
|
||
const auto fnAttach = [this, &rb_](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetRenderbuffer(rb_);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferTexture2D(GLenum attachment, TexImageTarget texImageTarget,
|
||
WebGLTexture* tex, GLint level)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!mContext->ValidateObjectAllowNull("framebufferTexture2D: texture", tex))
|
||
return;
|
||
|
||
if (tex) {
|
||
bool isTexture2D = tex->Target() == LOCAL_GL_TEXTURE_2D;
|
||
bool isTexTarget2D = texImageTarget == LOCAL_GL_TEXTURE_2D;
|
||
if (isTexture2D != isTexTarget2D) {
|
||
mContext->ErrorInvalidOperation("framebufferTexture2D: Mismatched"
|
||
" texture and texture target.");
|
||
return;
|
||
}
|
||
}
|
||
|
||
RefPtr<WebGLTexture> tex_ = tex; // Bug 1201275
|
||
const auto fnAttach = [this, &tex_, texImageTarget, level](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetTexImage(tex_, texImageTarget, level);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferTextureLayer(GLenum attachment, WebGLTexture* tex,
|
||
GLint level, GLint layer)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
const TexImageTarget texImageTarget = (tex ? tex->Target().get()
|
||
: LOCAL_GL_TEXTURE_2D);
|
||
|
||
RefPtr<WebGLTexture> tex_ = tex; // Bug 1201275
|
||
const auto fnAttach = [this, &tex_, texImageTarget, level, layer](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetTexImageLayer(tex_, texImageTarget, level, layer);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
WebGLFBAttachPoint*
|
||
WebGLFramebuffer::GetAttachPoint(GLenum attachPoint)
|
||
{
|
||
switch (attachPoint) {
|
||
case LOCAL_GL_COLOR_ATTACHMENT0:
|
||
return &mColorAttachment0;
|
||
|
||
case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
|
||
return &mDepthStencilAttachment;
|
||
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
return &mDepthAttachment;
|
||
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
return &mStencilAttachment;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
const auto lastCAEnum = mContext->LastColorAttachmentEnum();
|
||
if (attachPoint < LOCAL_GL_COLOR_ATTACHMENT1 ||
|
||
attachPoint > lastCAEnum)
|
||
{
|
||
return nullptr;
|
||
}
|
||
|
||
if (!mMoreColorAttachments.Size()) {
|
||
for (GLenum cur = LOCAL_GL_COLOR_ATTACHMENT1; cur <= lastCAEnum; cur++) {
|
||
mMoreColorAttachments.AppendNew(this, cur);
|
||
}
|
||
}
|
||
MOZ_ASSERT(LOCAL_GL_COLOR_ATTACHMENT0 + mMoreColorAttachments.Size() == lastCAEnum);
|
||
|
||
const size_t offset = attachPoint - LOCAL_GL_COLOR_ATTACHMENT1;
|
||
MOZ_ASSERT(offset <= mMoreColorAttachments.Size());
|
||
return &mMoreColorAttachments[offset];
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::DetachTexture(const WebGLTexture* tex)
|
||
{
|
||
if (mColorAttachment0.Texture() == tex)
|
||
mColorAttachment0.Clear();
|
||
|
||
if (mDepthAttachment.Texture() == tex)
|
||
mDepthAttachment.Clear();
|
||
|
||
if (mStencilAttachment.Texture() == tex)
|
||
mStencilAttachment.Clear();
|
||
|
||
if (mDepthStencilAttachment.Texture() == tex)
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
if (cur.Texture() == tex)
|
||
cur.Clear();
|
||
}
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::DetachRenderbuffer(const WebGLRenderbuffer* rb)
|
||
{
|
||
if (mColorAttachment0.Renderbuffer() == rb)
|
||
mColorAttachment0.Clear();
|
||
|
||
if (mDepthAttachment.Renderbuffer() == rb)
|
||
mDepthAttachment.Clear();
|
||
|
||
if (mStencilAttachment.Renderbuffer() == rb)
|
||
mStencilAttachment.Clear();
|
||
|
||
if (mDepthStencilAttachment.Renderbuffer() == rb)
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
if (cur.Renderbuffer() == rb)
|
||
cur.Clear();
|
||
}
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::HasDefinedAttachments() const
|
||
{
|
||
bool hasAttachments = false;
|
||
|
||
hasAttachments |= mColorAttachment0.IsDefined();
|
||
hasAttachments |= mDepthAttachment.IsDefined();
|
||
hasAttachments |= mStencilAttachment.IsDefined();
|
||
hasAttachments |= mDepthStencilAttachment.IsDefined();
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
hasAttachments |= cur.IsDefined();
|
||
}
|
||
|
||
return hasAttachments;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::HasIncompleteAttachments(nsCString* const out_info) const
|
||
{
|
||
const auto fnIsIncomplete = [this, out_info](const WebGLFBAttachPoint& cur) {
|
||
if (!cur.IsDefined())
|
||
return false; // Not defined, so can't count as incomplete.
|
||
|
||
return !cur.IsComplete(this->mContext, out_info);
|
||
};
|
||
|
||
bool hasIncomplete = false;
|
||
|
||
hasIncomplete |= fnIsIncomplete(mColorAttachment0);
|
||
hasIncomplete |= fnIsIncomplete(mDepthAttachment);
|
||
hasIncomplete |= fnIsIncomplete(mStencilAttachment);
|
||
hasIncomplete |= fnIsIncomplete(mDepthStencilAttachment);
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
hasIncomplete |= fnIsIncomplete(cur);
|
||
}
|
||
|
||
return hasIncomplete;
|
||
}
|
||
|
||
static bool
|
||
MatchOrReplaceSize(const WebGLFBAttachPoint& cur, uint32_t* const out_width,
|
||
uint32_t* const out_height)
|
||
{
|
||
if (!cur.HasImage())
|
||
return true;
|
||
|
||
uint32_t width;
|
||
uint32_t height;
|
||
cur.Size(&width, &height);
|
||
|
||
if (!*out_width) {
|
||
MOZ_ASSERT(!*out_height);
|
||
*out_width = width;
|
||
*out_height = height;
|
||
return true;
|
||
}
|
||
|
||
return (width == *out_width &&
|
||
height == *out_height);
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::AllImageRectsMatch() const
|
||
{
|
||
MOZ_ASSERT(HasDefinedAttachments());
|
||
DebugOnly<nsCString> fbStatusInfo;
|
||
MOZ_ASSERT(!HasIncompleteAttachments(&fbStatusInfo));
|
||
|
||
uint32_t width = 0;
|
||
uint32_t height = 0;
|
||
bool imageRectsMatch = true;
|
||
|
||
imageRectsMatch &= MatchOrReplaceSize(mColorAttachment0, &width, &height);
|
||
imageRectsMatch &= MatchOrReplaceSize(mDepthAttachment, &width, &height);
|
||
imageRectsMatch &= MatchOrReplaceSize(mStencilAttachment, &width, &height);
|
||
imageRectsMatch &= MatchOrReplaceSize(mDepthStencilAttachment, &width, &height);
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
imageRectsMatch &= MatchOrReplaceSize(cur, &width, &height);
|
||
}
|
||
|
||
return imageRectsMatch;
|
||
}
|
||
|
||
FBStatus
|
||
WebGLFramebuffer::PrecheckFramebufferStatus(nsCString* const out_info) const
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!HasDefinedAttachments())
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; // No attachments
|
||
|
||
if (HasIncompleteAttachments(out_info))
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
|
||
|
||
if (!mContext->IsWebGL2()) {
|
||
// INCOMPLETE_DIMENSIONS doesn't exist in GLES3.
|
||
if (!AllImageRectsMatch())
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS; // Inconsistent sizes
|
||
|
||
const auto depthOrStencilCount = int(mDepthAttachment.IsDefined()) +
|
||
int(mStencilAttachment.IsDefined()) +
|
||
int(mDepthStencilAttachment.IsDefined());
|
||
if (depthOrStencilCount > 1)
|
||
return LOCAL_GL_FRAMEBUFFER_UNSUPPORTED;
|
||
}
|
||
|
||
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
|
||
}
|
||
|
||
FBStatus
|
||
WebGLFramebuffer::CheckFramebufferStatus(nsCString* const out_info) const
|
||
{
|
||
if (mIsKnownFBComplete)
|
||
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
|
||
|
||
FBStatus ret = PrecheckFramebufferStatus(out_info);
|
||
if (ret != LOCAL_GL_FRAMEBUFFER_COMPLETE)
|
||
return ret;
|
||
|
||
// Looks good on our end. Let's ask the driver.
|
||
mContext->MakeContextCurrent();
|
||
|
||
// Ok, attach our chosen flavor of {DEPTH, STENCIL, DEPTH_STENCIL}.
|
||
FinalizeAttachments();
|
||
|
||
// TODO: This should not be unconditionally GL_FRAMEBUFFER.
|
||
ret = mContext->gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
|
||
|
||
if (ret == LOCAL_GL_FRAMEBUFFER_COMPLETE) {
|
||
mIsKnownFBComplete = true;
|
||
} else {
|
||
out_info->AssignLiteral("Bad status according to the driver");
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::ValidateAndInitAttachments(const char* funcName)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
nsCString fbStatusInfo;
|
||
const auto fbStatus = CheckFramebufferStatus(&fbStatusInfo);
|
||
if (fbStatus != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
|
||
nsCString errorText = nsPrintfCString("Incomplete framebuffer: Status 0x%04x",
|
||
fbStatus.get());
|
||
if (fbStatusInfo.Length()) {
|
||
errorText += ": ";
|
||
errorText += fbStatusInfo;
|
||
}
|
||
|
||
mContext->ErrorInvalidFramebufferOperation("%s: %s.", funcName,
|
||
errorText.BeginReading());
|
||
return false;
|
||
}
|
||
|
||
// Cool! We've checked out ok. Just need to initialize.
|
||
|
||
// Check if we need to initialize anything
|
||
{
|
||
bool hasUninitializedAttachments = false;
|
||
|
||
if (mColorAttachment0.HasImage() && IsDrawBuffer(0))
|
||
hasUninitializedAttachments |= mColorAttachment0.HasUninitializedImageData();
|
||
|
||
size_t i = 1;
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
if (cur.HasImage() && IsDrawBuffer(i))
|
||
hasUninitializedAttachments |= cur.HasUninitializedImageData();
|
||
|
||
++i;
|
||
}
|
||
|
||
if (mDepthAttachment.HasImage())
|
||
hasUninitializedAttachments |= mDepthAttachment.HasUninitializedImageData();
|
||
if (mStencilAttachment.HasImage())
|
||
hasUninitializedAttachments |= mStencilAttachment.HasUninitializedImageData();
|
||
if (mDepthStencilAttachment.HasImage())
|
||
hasUninitializedAttachments |= mDepthStencilAttachment.HasUninitializedImageData();
|
||
|
||
if (!hasUninitializedAttachments)
|
||
return true;
|
||
}
|
||
|
||
// Get buffer-bit-mask and color-attachment-mask-list
|
||
uint32_t clearBits = 0;
|
||
std::vector<GLenum> tempDrawBuffers(1 + mMoreColorAttachments.Size(), LOCAL_GL_NONE);
|
||
|
||
if (mColorAttachment0.HasUninitializedImageData() && IsDrawBuffer(0)) {
|
||
clearBits |= LOCAL_GL_COLOR_BUFFER_BIT;
|
||
tempDrawBuffers[0] = LOCAL_GL_COLOR_ATTACHMENT0;
|
||
}
|
||
|
||
size_t i = 1;
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
if (cur.HasUninitializedImageData() && IsDrawBuffer(i)) {
|
||
clearBits |= LOCAL_GL_COLOR_BUFFER_BIT;
|
||
tempDrawBuffers[i] = LOCAL_GL_COLOR_ATTACHMENT0 + i;
|
||
}
|
||
|
||
++i;
|
||
}
|
||
|
||
if (mDepthAttachment.HasUninitializedImageData() ||
|
||
mDepthStencilAttachment.HasUninitializedImageData())
|
||
{
|
||
clearBits |= LOCAL_GL_DEPTH_BUFFER_BIT;
|
||
}
|
||
|
||
if (mStencilAttachment.HasUninitializedImageData() ||
|
||
mDepthStencilAttachment.HasUninitializedImageData())
|
||
{
|
||
clearBits |= LOCAL_GL_STENCIL_BUFFER_BIT;
|
||
}
|
||
|
||
mContext->MakeContextCurrent();
|
||
|
||
const auto fnDrawBuffers = [this](const std::vector<GLenum>& list) {
|
||
const GLenum* ptr = nullptr;
|
||
if (list.size()) {
|
||
ptr = &(list[0]);
|
||
}
|
||
this->mContext->gl->fDrawBuffers(list.size(), ptr);
|
||
};
|
||
|
||
const auto drawBufferExt = WebGLExtensionID::WEBGL_draw_buffers;
|
||
const bool hasDrawBuffers = (mContext->IsWebGL2() ||
|
||
mContext->IsExtensionEnabled(drawBufferExt));
|
||
|
||
if (hasDrawBuffers) {
|
||
fnDrawBuffers(tempDrawBuffers);
|
||
}
|
||
|
||
// Clear!
|
||
mContext->ForceClearFramebufferWithDefaultValues(clearBits, false);
|
||
|
||
if (hasDrawBuffers) {
|
||
fnDrawBuffers(mDrawBuffers);
|
||
}
|
||
|
||
// Mark all the uninitialized images as initialized.
|
||
if (mDepthAttachment.HasUninitializedImageData())
|
||
mDepthAttachment.SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
if (mStencilAttachment.HasUninitializedImageData())
|
||
mStencilAttachment.SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
if (mDepthStencilAttachment.HasUninitializedImageData())
|
||
mDepthStencilAttachment.SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
|
||
if (mColorAttachment0.HasUninitializedImageData() && IsDrawBuffer(0)) {
|
||
mColorAttachment0.SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
}
|
||
|
||
i = 1;
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
if (cur.HasUninitializedImageData() && IsDrawBuffer(i))
|
||
cur.SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
|
||
++i;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static void
|
||
FinalizeDrawAndReadBuffers(gl::GLContext* gl, bool isColorBufferDefined)
|
||
{
|
||
MOZ_ASSERT(gl, "Expected a valid GLContext ptr.");
|
||
// GLES don't support DrawBuffer()/ReadBuffer.
|
||
// According to http://www.opengl.org/wiki/Framebuffer_Object
|
||
//
|
||
// Each draw buffers must either specify color attachment points that have images
|
||
// attached or must be GL_NONE. (GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER when false).
|
||
//
|
||
// If the read buffer is set, then it must specify an attachment point that has an
|
||
// image attached. (GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER when false).
|
||
//
|
||
// Note that this test is not performed if OpenGL 4.2 or ARB_ES2_compatibility is
|
||
// available.
|
||
if (gl->IsGLES() ||
|
||
gl->IsSupported(gl::GLFeature::ES2_compatibility) ||
|
||
gl->IsAtLeast(gl::ContextProfile::OpenGL, 420))
|
||
{
|
||
return;
|
||
}
|
||
|
||
// TODO(djg): Assert that fDrawBuffer/fReadBuffer is not NULL.
|
||
GLenum colorBufferSource = isColorBufferDefined ? LOCAL_GL_COLOR_ATTACHMENT0
|
||
: LOCAL_GL_NONE;
|
||
gl->fDrawBuffer(colorBufferSource);
|
||
gl->fReadBuffer(colorBufferSource);
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FinalizeAttachments() const
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
gl::GLContext* gl = mContext->gl;
|
||
|
||
// Nuke the depth and stencil attachment points.
|
||
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
|
||
LOCAL_GL_RENDERBUFFER, 0);
|
||
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
|
||
LOCAL_GL_RENDERBUFFER, 0);
|
||
|
||
// Call finalize.
|
||
mColorAttachment0.FinalizeAttachment(gl, LOCAL_GL_COLOR_ATTACHMENT0);
|
||
mDepthAttachment.FinalizeAttachment(gl, LOCAL_GL_DEPTH_ATTACHMENT);
|
||
mStencilAttachment.FinalizeAttachment(gl, LOCAL_GL_STENCIL_ATTACHMENT);
|
||
mDepthStencilAttachment.FinalizeAttachment(gl, LOCAL_GL_DEPTH_STENCIL_ATTACHMENT);
|
||
|
||
for (size_t i = 0; i < mMoreColorAttachments.Size(); i++) {
|
||
GLenum attachPoint = LOCAL_GL_COLOR_ATTACHMENT1 + i;
|
||
mMoreColorAttachments[i].FinalizeAttachment(gl, attachPoint);
|
||
}
|
||
|
||
FinalizeDrawAndReadBuffers(gl, mColorAttachment0.IsDefined());
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::ValidateForRead(const char* funcName,
|
||
const webgl::FormatUsageInfo** const out_format,
|
||
uint32_t* const out_width, uint32_t* const out_height)
|
||
{
|
||
if (!ValidateAndInitAttachments(funcName))
|
||
return false;
|
||
|
||
if (mReadBufferMode == LOCAL_GL_NONE) {
|
||
mContext->ErrorInvalidOperation("%s: Read buffer mode must not be"
|
||
" NONE.", funcName);
|
||
return false;
|
||
}
|
||
|
||
const auto attachPoint = GetAttachPoint(mReadBufferMode);
|
||
if (!attachPoint || !attachPoint->IsDefined()) {
|
||
mContext->ErrorInvalidOperation("%s: The attachment specified for reading is"
|
||
" null.", funcName);
|
||
return false;
|
||
}
|
||
|
||
*out_format = attachPoint->Format();
|
||
attachPoint->Size(out_width, out_height);
|
||
return true;
|
||
}
|
||
|
||
static bool
|
||
AttachmentsDontMatch(const WebGLFBAttachPoint& a, const WebGLFBAttachPoint& b)
|
||
{
|
||
if (a.Texture()) {
|
||
return (a.Texture() != b.Texture());
|
||
}
|
||
|
||
if (a.Renderbuffer()) {
|
||
return (a.Renderbuffer() != b.Renderbuffer());
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
JS::Value
|
||
WebGLFramebuffer::GetAttachmentParameter(const char* funcName, JSContext* cx,
|
||
GLenum target, GLenum attachment,
|
||
GLenum pname, ErrorResult* const out_error)
|
||
{
|
||
auto attachPoint = GetAttachPoint(attachment);
|
||
if (!attachPoint) {
|
||
mContext->ErrorInvalidEnum("%s: Can only query COLOR_ATTACHMENTi,"
|
||
" DEPTH_ATTACHMENT, DEPTH_STENCIL_ATTACHMENT, or"
|
||
" STENCIL_ATTACHMENT for a framebuffer.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
// There are a couple special rules for this one.
|
||
|
||
if (pname == LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE) {
|
||
mContext->ErrorInvalidOperation("%s: Querying"
|
||
" FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
|
||
" against DEPTH_STENCIL_ATTACHMENT is an"
|
||
" error.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
if (AttachmentsDontMatch(DepthAttachment(), StencilAttachment())) {
|
||
mContext->ErrorInvalidOperation("%s: DEPTH_ATTACHMENT and STENCIL_ATTACHMENT"
|
||
" have different objects bound.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
attachPoint = GetAttachPoint(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
}
|
||
|
||
return attachPoint->GetParameter(funcName, mContext, cx, target, attachment, pname,
|
||
out_error);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Goop.
|
||
|
||
JSObject*
|
||
WebGLFramebuffer::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto)
|
||
{
|
||
return dom::WebGLFramebufferBinding::Wrap(cx, this, givenProto);
|
||
}
|
||
|
||
inline void
|
||
ImplCycleCollectionUnlink(mozilla::WebGLFBAttachPoint& field)
|
||
{
|
||
field.Unlink();
|
||
}
|
||
|
||
inline void
|
||
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
|
||
mozilla::WebGLFBAttachPoint& field,
|
||
const char* name,
|
||
uint32_t flags = 0)
|
||
{
|
||
CycleCollectionNoteChild(callback, field.Texture(), name, flags);
|
||
CycleCollectionNoteChild(callback, field.Renderbuffer(), name, flags);
|
||
}
|
||
|
||
template<typename C>
|
||
inline void
|
||
ImplCycleCollectionUnlink(C& field)
|
||
{
|
||
for (auto& cur : field) {
|
||
cur.Unlink();
|
||
}
|
||
}
|
||
|
||
template<typename C>
|
||
inline void
|
||
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
|
||
C& field,
|
||
const char* name,
|
||
uint32_t flags = 0)
|
||
{
|
||
for (auto& cur : field) {
|
||
ImplCycleCollectionTraverse(callback, cur, name, flags);
|
||
}
|
||
}
|
||
|
||
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WebGLFramebuffer,
|
||
mColorAttachment0,
|
||
mDepthAttachment,
|
||
mStencilAttachment,
|
||
mDepthStencilAttachment,
|
||
mMoreColorAttachments)
|
||
|
||
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLFramebuffer, AddRef)
|
||
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLFramebuffer, Release)
|
||
|
||
} // namespace mozilla
|