1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/src/WebGLFramebuffer.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,201 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef WEBGLFRAMEBUFFER_H_
1.10 +#define WEBGLFRAMEBUFFER_H_
1.11 +
1.12 +#include "WebGLObjectModel.h"
1.13 +
1.14 +#include "nsWrapperCache.h"
1.15 +
1.16 +#include "mozilla/LinkedList.h"
1.17 +
1.18 +namespace mozilla {
1.19 +
1.20 +class WebGLFramebufferAttachable;
1.21 +class WebGLTexture;
1.22 +class WebGLRenderbuffer;
1.23 +namespace gl {
1.24 + class GLContext;
1.25 +}
1.26 +
1.27 +class WebGLFramebuffer MOZ_FINAL
1.28 + : public nsWrapperCache
1.29 + , public WebGLRefCountedObject<WebGLFramebuffer>
1.30 + , public LinkedListElement<WebGLFramebuffer>
1.31 + , public WebGLContextBoundObject
1.32 +{
1.33 +public:
1.34 + WebGLFramebuffer(WebGLContext* context);
1.35 +
1.36 + ~WebGLFramebuffer() {
1.37 + DeleteOnce();
1.38 + }
1.39 +
1.40 + struct Attachment
1.41 + {
1.42 + // deleting a texture or renderbuffer immediately detaches it
1.43 + WebGLRefPtr<WebGLTexture> mTexturePtr;
1.44 + WebGLRefPtr<WebGLRenderbuffer> mRenderbufferPtr;
1.45 + GLenum mAttachmentPoint;
1.46 + GLenum mTexImageTarget;
1.47 + GLint mTexImageLevel;
1.48 + mutable bool mNeedsFinalize;
1.49 +
1.50 + Attachment(GLenum aAttachmentPoint = LOCAL_GL_COLOR_ATTACHMENT0)
1.51 + : mAttachmentPoint(aAttachmentPoint)
1.52 + , mNeedsFinalize(false)
1.53 + {}
1.54 +
1.55 + bool IsDefined() const {
1.56 + return Texture() || Renderbuffer();
1.57 + }
1.58 +
1.59 + bool IsDeleteRequested() const;
1.60 +
1.61 + bool HasAlpha() const;
1.62 + bool IsReadableFloat() const;
1.63 +
1.64 + void SetTexImage(WebGLTexture* tex, GLenum target, GLint level);
1.65 + void SetRenderbuffer(WebGLRenderbuffer* rb);
1.66 +
1.67 + const WebGLTexture* Texture() const {
1.68 + return mTexturePtr;
1.69 + }
1.70 + WebGLTexture* Texture() {
1.71 + return mTexturePtr;
1.72 + }
1.73 + const WebGLRenderbuffer* Renderbuffer() const {
1.74 + return mRenderbufferPtr;
1.75 + }
1.76 + WebGLRenderbuffer* Renderbuffer() {
1.77 + return mRenderbufferPtr;
1.78 + }
1.79 + GLenum TexImageTarget() const {
1.80 + return mTexImageTarget;
1.81 + }
1.82 + GLint TexImageLevel() const {
1.83 + return mTexImageLevel;
1.84 + }
1.85 +
1.86 + bool HasUninitializedImageData() const;
1.87 + void SetImageDataStatus(WebGLImageDataStatus x);
1.88 +
1.89 + void Reset() {
1.90 + mTexturePtr = nullptr;
1.91 + mRenderbufferPtr = nullptr;
1.92 + }
1.93 +
1.94 + const WebGLRectangleObject& RectangleObject() const;
1.95 +
1.96 + bool HasImage() const;
1.97 + bool IsComplete() const;
1.98 +
1.99 + void FinalizeAttachment(gl::GLContext* gl, GLenum attachmentLoc) const;
1.100 + };
1.101 +
1.102 + void Delete();
1.103 +
1.104 + bool HasEverBeenBound() { return mHasEverBeenBound; }
1.105 + void SetHasEverBeenBound(bool x) { mHasEverBeenBound = x; }
1.106 + GLuint GLName() { return mGLName; }
1.107 +
1.108 + void FramebufferRenderbuffer(GLenum target,
1.109 + GLenum attachment,
1.110 + GLenum rbtarget,
1.111 + WebGLRenderbuffer* wrb);
1.112 +
1.113 + void FramebufferTexture2D(GLenum target,
1.114 + GLenum attachment,
1.115 + GLenum textarget,
1.116 + WebGLTexture* wtex,
1.117 + GLint level);
1.118 +
1.119 +private:
1.120 + void DetachAttachment(WebGLFramebuffer::Attachment& attachment);
1.121 + void DetachAllAttachments();
1.122 + const WebGLRectangleObject& GetAnyRectObject() const;
1.123 + Attachment* GetAttachmentOrNull(GLenum attachment);
1.124 +
1.125 +public:
1.126 + bool HasDefinedAttachments() const;
1.127 + bool HasIncompleteAttachments() const;
1.128 + bool AllImageRectsMatch() const;
1.129 + GLenum PrecheckFramebufferStatus() const;
1.130 + GLenum CheckFramebufferStatus() const;
1.131 +
1.132 + bool HasDepthStencilConflict() const {
1.133 + return int(mDepthAttachment.IsDefined()) +
1.134 + int(mStencilAttachment.IsDefined()) +
1.135 + int(mDepthStencilAttachment.IsDefined()) >= 2;
1.136 + }
1.137 +
1.138 + size_t ColorAttachmentCount() const {
1.139 + return mColorAttachments.Length();
1.140 + }
1.141 + const Attachment& ColorAttachment(size_t colorAttachmentId) const {
1.142 + return mColorAttachments[colorAttachmentId];
1.143 + }
1.144 +
1.145 + const Attachment& DepthAttachment() const {
1.146 + return mDepthAttachment;
1.147 + }
1.148 +
1.149 + const Attachment& StencilAttachment() const {
1.150 + return mStencilAttachment;
1.151 + }
1.152 +
1.153 + const Attachment& DepthStencilAttachment() const {
1.154 + return mDepthStencilAttachment;
1.155 + }
1.156 +
1.157 + const Attachment& GetAttachment(GLenum attachment) const;
1.158 +
1.159 + void DetachTexture(const WebGLTexture* tex);
1.160 +
1.161 + void DetachRenderbuffer(const WebGLRenderbuffer* rb);
1.162 +
1.163 + const WebGLRectangleObject& RectangleObject() const;
1.164 +
1.165 + WebGLContext* GetParentObject() const {
1.166 + return Context();
1.167 + }
1.168 +
1.169 + void FinalizeAttachments() const;
1.170 +
1.171 + virtual JSObject* WrapObject(JSContext* cx) MOZ_OVERRIDE;
1.172 +
1.173 + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLFramebuffer)
1.174 + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLFramebuffer)
1.175 +
1.176 + // mask mirrors glClear.
1.177 + bool HasCompletePlanes(GLbitfield mask);
1.178 +
1.179 + bool CheckAndInitializeAttachments();
1.180 +
1.181 + bool CheckColorAttachmentNumber(GLenum attachment, const char* functionName) const;
1.182 +
1.183 + void EnsureColorAttachments(size_t colorAttachmentId);
1.184 +
1.185 + Attachment* AttachmentFor(GLenum attachment);
1.186 + void NotifyAttachableChanged() const;
1.187 +
1.188 +private:
1.189 + mutable GLenum mStatus;
1.190 +
1.191 + GLuint mGLName;
1.192 + bool mHasEverBeenBound;
1.193 +
1.194 + // we only store pointers to attached renderbuffers, not to attached textures, because
1.195 + // we will only need to initialize renderbuffers. Textures are already initialized.
1.196 + nsTArray<Attachment> mColorAttachments;
1.197 + Attachment mDepthAttachment,
1.198 + mStencilAttachment,
1.199 + mDepthStencilAttachment;
1.200 +};
1.201 +
1.202 +} // namespace mozilla
1.203 +
1.204 +#endif
