/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef WEBGL_TRANSFORM_FEEDBACK_H_
#define WEBGL_TRANSFORM_FEEDBACK_H_
#include "WebGLObjectModel.h"
#include "WebGLTypes.h"
namespace mozilla {
namespace webgl {
struct CachedDrawFetchLimits;
}
class WebGLTransformFeedback final :
public WebGLContextBoundObject {
friend class ScopedDrawWithTransformFeedback;
friend class WebGLContext;
friend class WebGL2Context;
friend class WebGLProgram;
MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLTransformFeedback, override)
friend const webgl::CachedDrawFetchLimits* ValidateDraw(WebGLContext*, GLenum,
uint32_t);
public:
const GLuint mGLName;
bool mHasBeenBound =
false;
private:
// GLES 3.0.4 p267, Table 6.24 "Transform Feedback State"
// It's not yet in the ES3 spec, but the generic TF buffer bind point has been
// moved to context state, instead of TFO state.
std::vector<IndexedBufferBinding> mIndexedBindings;
bool mIsPaused;
bool mIsActive;
// Not in state tables:
RefPtr<WebGLProgram> mActive_Program;
MOZ_INIT_OUTSIDE_CTOR GLenum mActive_PrimMode;
MOZ_INIT_OUTSIDE_CTOR size_t mActive_VertPosition;
MOZ_INIT_OUTSIDE_CTOR size_t mActive_VertCapacity;
public:
WebGLTransformFeedback(WebGLContext* webgl, GLuint tf);
private:
~WebGLTransformFeedback() override;
public:
bool IsActiveAndNotPaused()
const {
return mIsActive && !mIsPaused; }
// GL Funcs
void BeginTransformFeedback(GLenum primMode);
void EndTransformFeedback();
void PauseTransformFeedback();
void ResumeTransformFeedback();
};
}
// namespace mozilla
#endif // WEBGL_TRANSFORM_FEEDBACK_H_
