// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef sw_FrameBuffer_hpp
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#define sw_FrameBuffer_hpp
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#include "Reactor/Reactor.hpp"
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#include "Device/Surface.hpp"
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#include "System/Thread.hpp"
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namespace sw
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{
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using namespace rr;
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class Surface;
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struct BlitState
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{
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int width;
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int height;
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VkFormat destFormat;
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VkFormat sourceFormat;
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int destStride;
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int sourceStride;
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int cursorWidth;
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int cursorHeight;
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};
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class FrameBuffer
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{
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public:
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FrameBuffer(int width, int height, bool fullscreen, bool topLeftOrigin);
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virtual ~FrameBuffer() = 0;
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virtual void flip(sw::Surface *source) = 0;
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virtual void blit(sw::Surface *source, const Rect *sourceRect, const Rect *destRect) = 0;
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virtual void *lock() = 0;
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virtual void unlock() = 0;
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static void setCursorImage(sw::Surface *cursor);
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static void setCursorOrigin(int x0, int y0);
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static void setCursorPosition(int x, int y);
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static Routine *copyRoutine(const BlitState &state);
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protected:
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void copy(sw::Surface *source);
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bool windowed;
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void *framebuffer; // Native window buffer.
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int width;
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int height;
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int stride;
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VkFormat format;
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private:
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void copyLocked();
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static void threadFunction(void *parameters);
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void *renderbuffer; // Render target buffer.
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struct Cursor
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{
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void *image;
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int x;
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int y;
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int width;
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int height;
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int hotspotX;
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int hotspotY;
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int positionX;
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int positionY;
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};
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static Cursor cursor;
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void (*blitFunction)(void *dst, void *src, Cursor *cursor);
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Routine *blitRoutine;
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BlitState blitState; // State of the current blitRoutine.
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BlitState updateState; // State of the routine to be generated.
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static void blend(const BlitState &state, const Pointer<Byte> &d, const Pointer<Byte> &s, const Pointer<Byte> &c);
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Thread *blitThread;
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Event syncEvent;
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Event blitEvent;
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volatile bool terminate;
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static bool topLeftOrigin;
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};
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}
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#endif // sw_FrameBuffer_hpp
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