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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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115
dom/canvas/WebGLBuffer.h Normal file
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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_BUFFER_H_
#define WEBGL_BUFFER_H_
#include "GLDefs.h"
#include "mozilla/LinkedList.h"
#include "mozilla/UniquePtr.h"
#include "nsWrapperCache.h"
#include "WebGLObjectModel.h"
#include "WebGLTypes.h"
namespace mozilla {
class WebGLElementArrayCache;
class WebGLBuffer final
: public nsWrapperCache
, public WebGLRefCountedObject<WebGLBuffer>
, public LinkedListElement<WebGLBuffer>
{
friend class WebGLContext;
friend class WebGL2Context;
friend class WebGLTexture;
public:
enum class Kind {
Undefined,
ElementArray,
OtherData
};
WebGLBuffer(WebGLContext* webgl, GLuint buf);
void SetContentAfterBind(GLenum target);
Kind Content() const { return mContent; }
void Delete();
size_t SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const;
GLenum Usage() const { return mUsage; }
size_t ByteLength() const { return mByteLength; }
bool ElementArrayCacheBufferData(const void* ptr, size_t bufferSizeInBytes);
void ElementArrayCacheBufferSubData(size_t pos, const void* ptr,
size_t updateSizeInBytes);
bool Validate(GLenum type, uint32_t max_allowed, size_t first, size_t count) const;
bool ValidateRange(const char* funcName, size_t byteOffset, size_t byteLen) const;
bool IsElementArrayUsedWithMultipleTypes() const;
WebGLContext* GetParentObject() const {
return mContext;
}
virtual JSObject* WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) override;
bool ValidateCanBindToTarget(const char* funcName, GLenum target);
void BufferData(GLenum target, size_t size, const void* data, GLenum usage);
////
static void AddBindCount(GLenum target, WebGLBuffer* buffer, int8_t addVal) {
if (!buffer)
return;
if (target == LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER) {
MOZ_ASSERT_IF(addVal < 0, buffer->mTFBindCount >= size_t(-addVal));
buffer->mTFBindCount += addVal;
} else {
MOZ_ASSERT_IF(addVal < 0, buffer->mNonTFBindCount >= size_t(-addVal));
buffer->mNonTFBindCount += addVal;
}
}
static void SetSlot(GLenum target, WebGLBuffer* newBuffer,
WebGLRefPtr<WebGLBuffer>* const out_slot)
{
WebGLBuffer* const oldBuffer = *out_slot;
AddBindCount(target, oldBuffer, -1);
AddBindCount(target, newBuffer, +1);
*out_slot = newBuffer;
}
bool IsBoundForTF() const { return bool(mTFBindCount); }
bool IsBoundForNonTF() const { return bool(mNonTFBindCount); }
////
const GLenum mGLName;
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebGLBuffer)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebGLBuffer)
protected:
~WebGLBuffer();
Kind mContent;
GLenum mUsage;
size_t mByteLength;
UniquePtr<WebGLElementArrayCache> mCache;
size_t mTFBindCount;
size_t mNonTFBindCount;
};
} // namespace mozilla
#endif // WEBGL_BUFFER_H_