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64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef WEBGL_TRANSFORM_FEEDBACK_H_
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#define WEBGL_TRANSFORM_FEEDBACK_H_
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#include "WebGLContext.h"
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#include "WebGLObjectModel.h"
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namespace mozilla {
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namespace webgl {
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struct CachedDrawFetchLimits;
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}
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class WebGLTransformFeedback final : public WebGLContextBoundObject {
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friend class ScopedDrawWithTransformFeedback;
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friend class WebGLContext;
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friend class WebGL2Context;
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friend class WebGLProgram;
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLTransformFeedback, override)
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friend const webgl::CachedDrawFetchLimits* ValidateDraw(WebGLContext*, GLenum,
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uint32_t);
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public:
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const GLuint mGLName;
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bool mHasBeenBound = false;
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private:
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// GLES 3.0.4 p267, Table 6.24 "Transform Feedback State"
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// It's not yet in the ES3 spec, but the generic TF buffer bind point has been
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// moved to context state, instead of TFO state.
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std::vector<IndexedBufferBinding> mIndexedBindings;
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bool mIsPaused;
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bool mIsActive;
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// Not in state tables:
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RefPtr<WebGLProgram> mActive_Program;
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MOZ_INIT_OUTSIDE_CTOR GLenum mActive_PrimMode;
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MOZ_INIT_OUTSIDE_CTOR size_t mActive_VertPosition;
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MOZ_INIT_OUTSIDE_CTOR size_t mActive_VertCapacity;
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public:
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WebGLTransformFeedback(WebGLContext* webgl, GLuint tf);
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private:
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~WebGLTransformFeedback() override;
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public:
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bool IsActiveAndNotPaused() const { return mIsActive && !mIsPaused; }
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// GL Funcs
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void BeginTransformFeedback(GLenum primMode);
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void EndTransformFeedback();
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void PauseTransformFeedback();
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void ResumeTransformFeedback();
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};
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} // namespace mozilla
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#endif // WEBGL_TRANSFORM_FEEDBACK_H_
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