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99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; 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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#ifndef WEBGL_ACTIVE_INFO_H_
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#define WEBGL_ACTIVE_INFO_H_
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#include "GLDefs.h"
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#include "mozilla/Attributes.h"
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#include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS
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#include "nsISupportsImpl.h" // NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING
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#include "nsString.h"
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#include "nsWrapperCache.h"
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namespace mozilla {
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class WebGLContext;
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class WebGLActiveInfo final
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: public nsWrapperCache
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{
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public:
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLActiveInfo)
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLActiveInfo)
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virtual JSObject* WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto) override;
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WebGLContext* GetParentObject() const {
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return mWebGL;
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}
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WebGLContext* const mWebGL;
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// ActiveInfo state:
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const uint32_t mElemCount; // `size`
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const GLenum mElemType; // `type`
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const nsCString mBaseUserName; // `name`, but ASCII, and without any final "[0]".
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// Not actually part of ActiveInfo:
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const bool mIsArray;
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const uint8_t mElemSize;
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const nsCString mBaseMappedName; // Without any final "[0]".
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bool IsSampler() const;
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WebGLActiveInfo(WebGLContext* webgl, GLint elemCount, GLenum elemType, bool isArray,
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const nsACString& baseUserName, const nsACString& baseMappedName);
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/* GLES 2.0.25, p33:
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* This command will return as much information about active
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* attributes as possible. If no information is available, length will
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* be set to zero and name will be an empty string. This situation
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* could arise if GetActiveAttrib is issued after a failed link.
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*
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* It's the same for GetActiveUniform.
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*/
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static WebGLActiveInfo* CreateInvalid(WebGLContext* webgl) {
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return new WebGLActiveInfo(webgl);
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}
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// WebIDL attributes
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GLint Size() const {
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return mElemCount;
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}
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GLenum Type() const {
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return mElemType;
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}
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void GetName(nsString& retval) const {
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CopyASCIItoUTF16(mBaseUserName, retval);
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if (mIsArray)
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retval.AppendLiteral("[0]");
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}
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private:
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explicit WebGLActiveInfo(WebGLContext* webgl)
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: mWebGL(webgl)
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, mElemCount(0)
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, mElemType(0)
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, mBaseUserName("")
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, mIsArray(false)
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, mElemSize(0)
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, mBaseMappedName("")
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{ }
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// Private destructor, to discourage deletion outside of Release():
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~WebGLActiveInfo() { }
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};
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//////////
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bool IsElemTypeSampler(GLenum elemType);
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} // namespace mozilla
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#endif // WEBGL_ACTIVE_INFO_H_
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