gecko-dev/content/canvas/src/WebGLBuffer.cpp

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/* -*- Mode: C++; tab-width: 20; 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/. */
#include "WebGLBuffer.h"
#include "WebGLContext.h"
#include "mozilla/dom/WebGLRenderingContextBinding.h"
using namespace mozilla;
WebGLBuffer::WebGLBuffer(WebGLContext *context)
: WebGLContextBoundObject(context)
, mHasEverBeenBound(false)
, mByteLength(0)
, mTarget(LOCAL_GL_NONE)
{
SetIsDOMBinding();
mContext->MakeContextCurrent();
mContext->gl->fGenBuffers(1, &mGLName);
mContext->mBuffers.insertBack(this);
}
WebGLBuffer::~WebGLBuffer() {
DeleteOnce();
}
void
WebGLBuffer::Delete() {
mContext->MakeContextCurrent();
mContext->gl->fDeleteBuffers(1, &mGLName);
mByteLength = 0;
mCache = nullptr;
LinkedListElement<WebGLBuffer>::remove(); // remove from mContext->mBuffers
}
void
WebGLBuffer::SetTarget(GLenum target) {
mTarget = target;
if (!mCache && mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
mCache = new WebGLElementArrayCache;
}
bool
WebGLBuffer::ElementArrayCacheBufferData(const void* ptr, size_t buffer_size_in_bytes) {
if (mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
return mCache->BufferData(ptr, buffer_size_in_bytes);
return true;
}
void
WebGLBuffer::ElementArrayCacheBufferSubData(size_t pos, const void* ptr, size_t update_size_in_bytes) {
if (mTarget == LOCAL_GL_ELEMENT_ARRAY_BUFFER)
mCache->BufferSubData(pos, ptr, update_size_in_bytes);
}
JSObject*
WebGLBuffer::WrapObject(JSContext *cx, JS::Handle<JSObject*> scope) {
return dom::WebGLBufferBinding::Wrap(cx, scope, this);
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLBuffer)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLBuffer, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLBuffer, Release)