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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "core/html/canvas/WebGLVertexArrayObjectOES.h"
#include "core/html/canvas/WebGLRenderingContextBase.h"
namespace blink {
PassRefPtrWillBeRawPtr<WebGLVertexArrayObjectOES> WebGLVertexArrayObjectOES::create(WebGLRenderingContextBase* ctx, VaoType type)
{
return adoptRefWillBeNoop(new WebGLVertexArrayObjectOES(ctx, type));
}
WebGLVertexArrayObjectOES::WebGLVertexArrayObjectOES(WebGLRenderingContextBase* ctx, VaoType type)
: WebGLContextObject(ctx)
, m_type(type)
, m_hasEverBeenBound(false)
#if ENABLE(OILPAN)
, m_destructionInProgress(false)
#endif
, m_boundElementArrayBuffer(nullptr)
{
m_vertexAttribState.resize(ctx->maxVertexAttribs());
switch (m_type) {
case VaoTypeDefault:
break;
default:
setObject(context()->webContext()->createVertexArrayOES());
break;
}
}
WebGLVertexArrayObjectOES::~WebGLVertexArrayObjectOES()
{
#if ENABLE(OILPAN)
m_destructionInProgress = true;
#endif
// Delete the platform framebuffer resource. Explicit detachment
// is for the benefit of Oilpan, where this vertex array object
// isn't detached when it and the WebGLRenderingContextBase object
// it is registered with are both finalized. Without Oilpan, the
// object will have been detached.
//
// To keep the code regular, the trivial detach()ment is always
// performed.
detachAndDeleteObject();
}
void WebGLVertexArrayObjectOES::dispatchDetached(blink::WebGraphicsContext3D* context3d)
{
if (m_boundElementArrayBuffer)
m_boundElementArrayBuffer->onDetached(context3d);
for (size_t i = 0; i < m_vertexAttribState.size(); ++i) {
VertexAttribState& state = m_vertexAttribState[i];
if (state.bufferBinding)
state.bufferBinding->onDetached(context3d);
}
}
void WebGLVertexArrayObjectOES::deleteObjectImpl(blink::WebGraphicsContext3D* context3d, Platform3DObject object)
{
switch (m_type) {
case VaoTypeDefault:
break;
default:
context3d->deleteVertexArrayOES(object);
break;
}
#if ENABLE(OILPAN)
// These m_boundElementArrayBuffer and m_vertexAttribState heap
// objects must not be accessed during destruction in the oilpan
// build. They could have been already finalized. The finalizers
// of these objects (and their elements) will themselves handle
// detachment.
if (!m_destructionInProgress)
dispatchDetached(context3d);
#else
dispatchDetached(context3d);
#endif
}
void WebGLVertexArrayObjectOES::setElementArrayBuffer(PassRefPtrWillBeRawPtr<WebGLBuffer> buffer)
{
if (buffer)
buffer->onAttached();
if (m_boundElementArrayBuffer)
m_boundElementArrayBuffer->onDetached(context()->webContext());
m_boundElementArrayBuffer = buffer;
}
void WebGLVertexArrayObjectOES::setVertexAttribState(
GLuint index, GLsizei bytesPerElement, GLint size, GLenum type, GLboolean normalized, GLsizei stride, GLintptr offset, PassRefPtrWillBeRawPtr<WebGLBuffer> buffer)
{
GLsizei validatedStride = stride ? stride : bytesPerElement;
VertexAttribState& state = m_vertexAttribState[index];
if (buffer)
buffer->onAttached();
if (state.bufferBinding)
state.bufferBinding->onDetached(context()->webContext());
state.bufferBinding = buffer;
state.bytesPerElement = bytesPerElement;
state.size = size;
state.type = type;
state.normalized = normalized;
state.stride = validatedStride;
state.originalStride = stride;
state.offset = offset;
}
void WebGLVertexArrayObjectOES::unbindBuffer(PassRefPtrWillBeRawPtr<WebGLBuffer> buffer)
{
if (m_boundElementArrayBuffer == buffer) {
m_boundElementArrayBuffer->onDetached(context()->webContext());
m_boundElementArrayBuffer = nullptr;
}
for (size_t i = 0; i < m_vertexAttribState.size(); ++i) {
VertexAttribState& state = m_vertexAttribState[i];
if (state.bufferBinding == buffer) {
buffer->onDetached(context()->webContext());
state.bufferBinding = nullptr;
}
}
}
void WebGLVertexArrayObjectOES::setVertexAttribDivisor(GLuint index, GLuint divisor)
{
VertexAttribState& state = m_vertexAttribState[index];
state.divisor = divisor;
}
void WebGLVertexArrayObjectOES::VertexAttribState::trace(Visitor* visitor)
{
visitor->trace(bufferBinding);
}
void WebGLVertexArrayObjectOES::trace(Visitor* visitor)
{
visitor->trace(m_boundElementArrayBuffer);
visitor->trace(m_vertexAttribState);
WebGLContextObject::trace(visitor);
}
}
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