gecko-dev/dom/canvas/WebGLBuffer.cpp
2015-07-14 17:37:28 -07:00

118 lines
3.0 KiB
C++

/* -*- 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 "GLContext.h"
#include "mozilla/dom/WebGLRenderingContextBinding.h"
#include "WebGLContext.h"
#include "WebGLElementArrayCache.h"
namespace mozilla {
WebGLBuffer::WebGLBuffer(WebGLContext* webgl, GLuint buf)
: WebGLContextBoundObject(webgl)
, mGLName(buf)
, mContent(Kind::Undefined)
, mByteLength(0)
{
mContext->mBuffers.insertBack(this);
}
WebGLBuffer::~WebGLBuffer()
{
DeleteOnce();
}
void
WebGLBuffer::BindTo(GLenum target)
{
switch (target) {
case LOCAL_GL_ELEMENT_ARRAY_BUFFER:
mContent = Kind::ElementArray;
if (!mCache)
mCache = new WebGLElementArrayCache;
break;
case LOCAL_GL_ARRAY_BUFFER:
case LOCAL_GL_PIXEL_PACK_BUFFER:
case LOCAL_GL_PIXEL_UNPACK_BUFFER:
case LOCAL_GL_UNIFORM_BUFFER:
case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER:
mContent = Kind::OtherData;
break;
case LOCAL_GL_COPY_READ_BUFFER:
case LOCAL_GL_COPY_WRITE_BUFFER:
/* Do nothing. Doesn't set the type of the buffer contents. */
break;
default:
MOZ_CRASH();
}
}
void
WebGLBuffer::Delete()
{
mContext->MakeContextCurrent();
mContext->gl->fDeleteBuffers(1, &mGLName);
mByteLength = 0;
mCache = nullptr;
LinkedListElement<WebGLBuffer>::remove(); // remove from mContext->mBuffers
}
bool
WebGLBuffer::ElementArrayCacheBufferData(const void* ptr,
size_t bufferSizeInBytes)
{
if (mContent == Kind::ElementArray)
return mCache->BufferData(ptr, bufferSizeInBytes);
return true;
}
void
WebGLBuffer::ElementArrayCacheBufferSubData(size_t pos, const void* ptr,
size_t updateSizeInBytes)
{
if (mContent == Kind::ElementArray)
mCache->BufferSubData(pos, ptr, updateSizeInBytes);
}
size_t
WebGLBuffer::SizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf) const
{
size_t sizeOfCache = mCache ? mCache->SizeOfIncludingThis(mallocSizeOf)
: 0;
return mallocSizeOf(this) + sizeOfCache;
}
bool
WebGLBuffer::Validate(GLenum type, uint32_t maxAllowed, size_t first,
size_t count, uint32_t* const out_upperBound)
{
return mCache->Validate(type, maxAllowed, first, count, out_upperBound);
}
bool
WebGLBuffer::IsElementArrayUsedWithMultipleTypes() const
{
return mCache->BeenUsedWithMultipleTypes();
}
JSObject*
WebGLBuffer::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto)
{
return dom::WebGLBufferBinding::Wrap(cx, this, givenProto);
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLBuffer)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLBuffer, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLBuffer, Release)
} // namespace mozilla