/* -*- 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 "WebGLContext.h" #include "WebGLObjectModel.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 mIndexedBindings; bool mIsPaused; bool mIsActive; // Not in state tables: RefPtr 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_