WebKit/chromium/public/WebGLES2Context.h

/*
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#ifndef WebGLES2Context_h
#define WebGLES2Context_h

#include "WebCommon.h"
#include "WebNonCopyable.h"

namespace WebKit {

struct WebSize;
class WebView;

// This interface abstracts the creation and management of an
// OpenGL ES 2.0 context.

class WebGLES2Context : public WebNonCopyable {
public:
    virtual ~WebGLES2Context() {}

    virtual bool initialize(WebView*, WebGLES2Context* parent) = 0;
    virtual bool makeCurrent() = 0;
    virtual bool destroy() = 0;
    virtual bool swapBuffers() = 0;

    // The follow two functions are for managing a context that renders offscreen.

    // Resizes the backing store used for offscreen rendering.
    virtual void resizeOffscreenContent(const WebSize&) = 0;

    // Returns the ID of the texture used for offscreen rendering in the context of the parent.
    virtual unsigned getOffscreenContentParentTextureId() = 0;

    // The following function is used only on Mac OS X and is needed
    // in order to report window size changes.
#if defined(__APPLE__)
    virtual void resizeOnscreenContent(const WebSize&) = 0;
#endif
};

} // namespace WebKit

#endif