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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef WEBGL_ACTIVE_INFO_H_
#define WEBGL_ACTIVE_INFO_H_
#include "GLDefs.h"
#include "mozilla/Attributes.h"
#include "nsCycleCollectionParticipant.h" // NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS
#include "nsISupportsImpl.h" // NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING
#include "nsString.h"
#include "nsWrapperCache.h"
namespace mozilla {
class WebGLContext;
class WebGLActiveInfo final
: public nsWrapperCache
{
public:
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLActiveInfo)
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLActiveInfo)
virtual JSObject* WrapObject(JSContext* js, JS::Handle<JSObject*> givenProto) override;
WebGLContext* GetParentObject() const {
return mWebGL;
}
WebGLContext* const mWebGL;
// ActiveInfo state:
const uint32_t mElemCount; // `size`
const GLenum mElemType; // `type`
const nsCString mBaseUserName; // `name`, but ASCII, and without any final "[0]".
// Not actually part of ActiveInfo:
const bool mIsArray;
const uint8_t mElemSize;
const nsCString mBaseMappedName; // Without any final "[0]".
bool IsSampler() const;
WebGLActiveInfo(WebGLContext* webgl, GLint elemCount, GLenum elemType, bool isArray,
const nsACString& baseUserName, const nsACString& baseMappedName);
/* GLES 2.0.25, p33:
* This command will return as much information about active
* attributes as possible. If no information is available, length will
* be set to zero and name will be an empty string. This situation
* could arise if GetActiveAttrib is issued after a failed link.
*
* It's the same for GetActiveUniform.
*/
static WebGLActiveInfo* CreateInvalid(WebGLContext* webgl) {
return new WebGLActiveInfo(webgl);
}
// WebIDL attributes
GLint Size() const {
return mElemCount;
}
GLenum Type() const {
return mElemType;
}
void GetName(nsString& retval) const {
CopyASCIItoUTF16(mBaseUserName, retval);
if (mIsArray)
retval.AppendLiteral("[0]");
}
private:
explicit WebGLActiveInfo(WebGLContext* webgl)
: mWebGL(webgl)
, mElemCount(0)
, mElemType(0)
, mBaseUserName("")
, mIsArray(false)
, mElemSize(0)
, mBaseMappedName("")
{ }
// Private destructor, to discourage deletion outside of Release():
~WebGLActiveInfo() { }
};
//////////
bool IsElemTypeSampler(GLenum elemType);
} // namespace mozilla
#endif // WEBGL_ACTIVE_INFO_H_
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