File: WebGL2RenderingContext.h

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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef WebGL2RenderingContext_h
#define WebGL2RenderingContext_h

#include "core/html/canvas/CanvasRenderingContextFactory.h"
#include "modules/webgl/WebGL2RenderingContextBase.h"
#include <memory>

namespace blink {

class CanvasContextCreationAttributes;
class EXTColorBufferFloat;
class EXTTextureFilterAnisotropic;
class OESTextureFloatLinear;
class WebGLDebugRendererInfo;
class WebGLLoseContext;

class WebGL2RenderingContext : public WebGL2RenderingContextBase {
  DEFINE_WRAPPERTYPEINFO();

 public:
  class Factory : public CanvasRenderingContextFactory {
    WTF_MAKE_NONCOPYABLE(Factory);

   public:
    Factory() {}
    ~Factory() override {}

    CanvasRenderingContext* create(HTMLCanvasElement*,
                                   const CanvasContextCreationAttributes&,
                                   Document&) override;
    CanvasRenderingContext* create(
        ScriptState*,
        OffscreenCanvas*,
        const CanvasContextCreationAttributes&) override;
    CanvasRenderingContext::ContextType getContextType() const override {
      return CanvasRenderingContext::ContextWebgl2;
    }
    void onError(HTMLCanvasElement*, const String& error) override;
  };

  CanvasRenderingContext::ContextType getContextType() const override {
    return CanvasRenderingContext::ContextWebgl2;
  }
  ImageBitmap* transferToImageBitmap(ScriptState*) final;
  String contextName() const override { return "WebGL2RenderingContext"; }
  void registerContextExtensions() override;
  void setCanvasGetContextResult(RenderingContext&) final;
  void setOffscreenCanvasGetContextResult(OffscreenRenderingContext&) final;

  DECLARE_VIRTUAL_TRACE();

  DECLARE_VIRTUAL_TRACE_WRAPPERS();

 protected:
  WebGL2RenderingContext(
      HTMLCanvasElement* passedCanvas,
      std::unique_ptr<WebGraphicsContext3DProvider>,
      const CanvasContextCreationAttributes& requestedAttributes);

  WebGL2RenderingContext(
      OffscreenCanvas* passedOffscreenCanvas,
      std::unique_ptr<WebGraphicsContext3DProvider>,
      const CanvasContextCreationAttributes& requestedAttributes);

  Member<EXTColorBufferFloat> m_extColorBufferFloat;
  Member<EXTDisjointTimerQueryWebGL2> m_extDisjointTimerQueryWebGL2;
  Member<EXTTextureFilterAnisotropic> m_extTextureFilterAnisotropic;
  Member<OESTextureFloatLinear> m_oesTextureFloatLinear;
  Member<WebGLCompressedTextureASTC> m_webglCompressedTextureASTC;
  Member<WebGLCompressedTextureATC> m_webglCompressedTextureATC;
  Member<WebGLCompressedTextureETC> m_webglCompressedTextureETC;
  Member<WebGLCompressedTextureETC1> m_webglCompressedTextureETC1;
  Member<WebGLCompressedTexturePVRTC> m_webglCompressedTexturePVRTC;
  Member<WebGLCompressedTextureS3TC> m_webglCompressedTextureS3TC;
  Member<WebGLCompressedTextureS3TCsRGB> m_webglCompressedTextureS3TCsRGB;
  Member<WebGLDebugRendererInfo> m_webglDebugRendererInfo;
  Member<WebGLDebugShaders> m_webglDebugShaders;
  Member<WebGLGetBufferSubDataAsync> m_webglGetBufferSubDataAsync;
  Member<WebGLLoseContext> m_webglLoseContext;
};

DEFINE_TYPE_CASTS(WebGL2RenderingContext,
                  CanvasRenderingContext,
                  context,
                  context->is3d() &&
                      WebGLRenderingContextBase::getWebGLVersion(context) == 2,
                  context.is3d() &&
                      WebGLRenderingContextBase::getWebGLVersion(&context) ==
                          2);

}  // namespace blink

#endif