| // |
| // Copyright 2015 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // QueryGL.h: Defines the class interface for QueryGL. |
| |
| #ifndef LIBANGLE_RENDERER_GL_QUERYGL_H_ |
| #define LIBANGLE_RENDERER_GL_QUERYGL_H_ |
| |
| #include <deque> |
| |
| #include "libANGLE/renderer/QueryImpl.h" |
| |
| namespace rx |
| { |
| |
| class FunctionsGL; |
| class StateManagerGL; |
| |
| class QueryGL : public QueryImpl |
| { |
| public: |
| QueryGL(GLenum type); |
| ~QueryGL() override; |
| |
| // OpenGL is only allowed to have one query of each type active at any given time. Since ANGLE |
| // virtualizes contexts, queries need to be able to be paused and resumed. |
| // A query is "paused" by ending it and pushing the ID into a list of queries awaiting readback. |
| // When it is "resumed", a new query is generated and started. |
| // When a result is required, the queries are "flushed" by iterating over the list of pending |
| // queries and merging their results. |
| virtual gl::Error pause() = 0; |
| virtual gl::Error resume() = 0; |
| }; |
| |
| class StandardQueryGL : public QueryGL |
| { |
| public: |
| StandardQueryGL(GLenum type, const FunctionsGL *functions, StateManagerGL *stateManager); |
| ~StandardQueryGL() override; |
| |
| gl::Error begin() override; |
| gl::Error end() override; |
| gl::Error queryCounter() override; |
| gl::Error getResult(GLint *params) override; |
| gl::Error getResult(GLuint *params) override; |
| gl::Error getResult(GLint64 *params) override; |
| gl::Error getResult(GLuint64 *params) override; |
| gl::Error isResultAvailable(bool *available) override; |
| |
| gl::Error pause() override; |
| gl::Error resume() override; |
| |
| private: |
| gl::Error flush(bool force); |
| |
| template <typename T> |
| gl::Error getResultBase(T *params); |
| |
| GLenum mType; |
| |
| const FunctionsGL *mFunctions; |
| StateManagerGL *mStateManager; |
| |
| GLuint mActiveQuery; |
| std::deque<GLuint> mPendingQueries; |
| GLuint64 mResultSum; |
| }; |
| |
| class SyncProviderGL; |
| class SyncQueryGL : public QueryGL |
| { |
| public: |
| SyncQueryGL(GLenum type, const FunctionsGL *functions, StateManagerGL *stateManager); |
| ~SyncQueryGL() override; |
| |
| static bool IsSupported(const FunctionsGL *functions); |
| |
| gl::Error begin() override; |
| gl::Error end() override; |
| gl::Error queryCounter() override; |
| gl::Error getResult(GLint *params) override; |
| gl::Error getResult(GLuint *params) override; |
| gl::Error getResult(GLint64 *params) override; |
| gl::Error getResult(GLuint64 *params) override; |
| gl::Error isResultAvailable(bool *available) override; |
| |
| gl::Error pause() override; |
| gl::Error resume() override; |
| |
| private: |
| gl::Error flush(bool force); |
| |
| template <typename T> |
| gl::Error getResultBase(T *params); |
| |
| const FunctionsGL *mFunctions; |
| StateManagerGL *mStateManager; |
| |
| std::unique_ptr<SyncProviderGL> mSyncProvider; |
| bool mFinished; |
| }; |
| } |
| |
| #endif // LIBANGLE_RENDERER_GL_QUERYGL_H_ |