105 lines
3.9 KiB
C++
105 lines
3.9 KiB
C++
/*
|
|
* Copyright (C) 2009-2017 Apple 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 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 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.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#if ENABLE(WEBGL)
|
|
|
|
#include "WebGLSharedObject.h"
|
|
#include <wtf/RefPtr.h>
|
|
|
|
namespace JSC {
|
|
class ArrayBuffer;
|
|
class ArrayBufferView;
|
|
}
|
|
|
|
namespace WebCore {
|
|
|
|
class WebGLBuffer final : public WebGLSharedObject {
|
|
public:
|
|
static Ref<WebGLBuffer> create(WebGLRenderingContextBase&);
|
|
virtual ~WebGLBuffer();
|
|
|
|
bool associateBufferData(GCGLsizeiptr size);
|
|
bool associateBufferData(JSC::ArrayBuffer*);
|
|
bool associateBufferData(JSC::ArrayBufferView*);
|
|
bool associateBufferSubData(GCGLintptr offset, JSC::ArrayBuffer*);
|
|
bool associateBufferSubData(GCGLintptr offset, JSC::ArrayBufferView*);
|
|
bool associateCopyBufferSubData(const WebGLBuffer& readBuffer, GCGLintptr readOffset, GCGLintptr writeOffset, GCGLsizeiptr);
|
|
|
|
void disassociateBufferData();
|
|
|
|
GCGLsizeiptr byteLength() const;
|
|
const RefPtr<JSC::ArrayBuffer> elementArrayBuffer() const { return m_elementArrayBuffer; }
|
|
|
|
// Gets the cached max index for the given type if one has been set.
|
|
std::optional<unsigned> getCachedMaxIndex(GCGLenum type);
|
|
// Sets the cached max index for the given type.
|
|
void setCachedMaxIndex(GCGLenum type, unsigned value);
|
|
|
|
GCGLenum getTarget() const { return m_target; }
|
|
void setTarget(GCGLenum);
|
|
|
|
bool hasEverBeenBound() const { return object() && m_target; }
|
|
|
|
private:
|
|
WebGLBuffer(WebGLRenderingContextBase&);
|
|
|
|
void deleteObjectImpl(const WTF::AbstractLocker&, GraphicsContextGL*, PlatformGLObject) override;
|
|
|
|
GCGLenum m_target { 0 };
|
|
|
|
RefPtr<JSC::ArrayBuffer> m_elementArrayBuffer;
|
|
GCGLsizeiptr m_byteLength { 0 };
|
|
|
|
// Optimization for index validation. For each type of index
|
|
// (i.e., UNSIGNED_SHORT), cache the maximum index in the
|
|
// entire buffer.
|
|
//
|
|
// This is sufficient to eliminate a lot of work upon each
|
|
// draw call as long as all bound array buffers are at least
|
|
// that size.
|
|
struct MaxIndexCacheEntry {
|
|
GCGLenum type;
|
|
unsigned maxIndex;
|
|
};
|
|
// OpenGL ES 2.0 only has two valid index types (UNSIGNED_BYTE
|
|
// and UNSIGNED_SHORT) plus one extension (UNSIGNED_INT).
|
|
MaxIndexCacheEntry m_maxIndexCache[4];
|
|
unsigned m_nextAvailableCacheEntry { 0 };
|
|
|
|
// Clears all of the cached max indices.
|
|
void clearCachedMaxIndices();
|
|
|
|
// Helper function called by the three associateBufferData().
|
|
bool associateBufferDataImpl(const void* data, GCGLsizeiptr byteLength);
|
|
// Helper function called by the two associateBufferSubData().
|
|
bool associateBufferSubDataImpl(GCGLintptr offset, const void* data, GCGLsizeiptr byteLength);
|
|
};
|
|
|
|
} // namespace WebCore
|
|
|
|
#endif
|