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f2d2e80e59
This CL flips the switch to make Sky use Dart. TBR=eseidel@chromium.org BUG=454613 Review URL: https://codereview.chromium.org/922893002
136 lines
5.6 KiB
C++
136 lines
5.6 KiB
C++
/*
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* Copyright (C) 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_CORE_HTML_CANVAS_WEBGLFRAMEBUFFER_H_
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#define SKY_ENGINE_CORE_HTML_CANVAS_WEBGLFRAMEBUFFER_H_
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#include "sky/engine/tonic/dart_wrappable.h"
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#include "sky/engine/core/html/canvas/WebGLContextObject.h"
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#include "sky/engine/core/html/canvas/WebGLSharedObject.h"
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#include "sky/engine/wtf/HashMap.h"
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#include "sky/engine/wtf/PassRefPtr.h"
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#include "sky/engine/wtf/RefCounted.h"
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#include "sky/engine/wtf/Vector.h"
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namespace blink {
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class WebGLRenderbuffer;
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class WebGLTexture;
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class WebGLFramebuffer final : public WebGLContextObject, public DartWrappable {
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DEFINE_WRAPPERTYPEINFO();
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public:
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class WebGLAttachment : public RefCounted<WebGLAttachment> {
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public:
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virtual ~WebGLAttachment();
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virtual GLsizei width() const = 0;
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virtual GLsizei height() const = 0;
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virtual GLenum format() const = 0;
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// For texture attachment, type() returns the type of the attached texture.
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// For renderbuffer attachment, the type of the renderbuffer may vary with GL implementation.
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// To avoid confusion, it would be better to not implement type() for renderbuffer attachment and
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// we should always use the internalformat of the renderbuffer and avoid using type() API.
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virtual GLenum type() const = 0;
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virtual WebGLSharedObject* object() const = 0;
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virtual bool isSharedObject(WebGLSharedObject*) const = 0;
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virtual bool valid() const = 0;
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virtual void onDetached(blink::WebGraphicsContext3D*) = 0;
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virtual void attach(blink::WebGraphicsContext3D*, GLenum attachment) = 0;
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virtual void unattach(blink::WebGraphicsContext3D*, GLenum attachment) = 0;
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protected:
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WebGLAttachment();
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};
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virtual ~WebGLFramebuffer();
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static PassRefPtr<WebGLFramebuffer> create(WebGLRenderingContextBase*);
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void setAttachmentForBoundFramebuffer(GLenum attachment, GLenum texTarget, WebGLTexture*, GLint level);
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void setAttachmentForBoundFramebuffer(GLenum attachment, WebGLRenderbuffer*);
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// If an object is attached to the currently bound framebuffer, remove it.
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void removeAttachmentFromBoundFramebuffer(WebGLSharedObject*);
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// If a given attachment point for the currently bound framebuffer is not null, remove the attached object.
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void removeAttachmentFromBoundFramebuffer(GLenum);
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WebGLSharedObject* getAttachmentObject(GLenum) const;
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GLenum colorBufferFormat() const;
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// This should always be called before drawArray, drawElements, clear,
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// readPixels, copyTexImage2D, copyTexSubImage2D if this framebuffer is
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// currently bound.
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// Return false if the framebuffer is incomplete.
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bool onAccess(blink::WebGraphicsContext3D*, const char** reason);
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// Software version of glCheckFramebufferStatus(), except that when
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// FRAMEBUFFER_COMPLETE is returned, it is still possible for
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// glCheckFramebufferStatus() to return FRAMEBUFFER_UNSUPPORTED,
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// depending on hardware implementation.
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GLenum checkStatus(const char** reason) const;
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bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; }
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void setHasEverBeenBound() { m_hasEverBeenBound = true; }
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bool hasStencilBuffer() const;
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// Wrapper for drawBuffersEXT/drawBuffersARB to work around a driver bug.
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void drawBuffers(const Vector<GLenum>& bufs);
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GLenum getDrawBuffer(GLenum);
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protected:
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explicit WebGLFramebuffer(WebGLRenderingContextBase*);
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virtual void deleteObjectImpl(blink::WebGraphicsContext3D*, Platform3DObject) override;
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private:
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WebGLAttachment* getAttachment(GLenum) const;
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bool isAttachmentComplete(WebGLAttachment* attachedObject, GLenum attachment, const char** reason) const;
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// Check if the framebuffer is currently bound.
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bool isBound() const;
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// attach 'attachment' at 'attachmentPoint'.
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void attach(GLenum attachment, GLenum attachmentPoint);
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// Check if a new drawBuffers call should be issued. This is called when we add or remove an attachment.
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void drawBuffersIfNecessary(bool force);
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typedef HashMap<GLenum, RefPtr<WebGLAttachment> > AttachmentMap;
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AttachmentMap m_attachments;
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bool m_hasEverBeenBound;
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Vector<GLenum> m_drawBuffers;
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Vector<GLenum> m_filteredDrawBuffers;
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};
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} // namespace blink
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#endif // SKY_ENGINE_CORE_HTML_CANVAS_WEBGLFRAMEBUFFER_H_
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