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b53b31b74a
- Add reusable line points buffer to eliminate per-call heap allocations in DrawLines. - Cache last draw color to skip redundant SetPenColor/SetBrushColor calls. - Pre-compute cardinal angle constants (0°, 90°, 180°, 270°) for CopyEx fast-path. - Cache color modulation state to avoid redundant LUT rebuilds. - Add missing break statement in HandleEvent. - Initialize previously uninitialized lastTime variable in UpdateFPS.
123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef ngage_video_render_ngage_c_hpp
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#define ngage_video_render_ngage_c_hpp
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#include "SDL_render_ngage_c.h"
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#include <3dtypes.h>
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#include <NRenderer.h>
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#include <e32std.h>
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#include <w32std.h>
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class CRenderer : public MDirectScreenAccess
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{
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public:
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static CRenderer *NewL();
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virtual ~CRenderer();
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// Rendering functions.
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void Clear(TUint32 iColor);
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bool Copy(SDL_Renderer *renderer, SDL_Texture *texture, const SDL_Rect *srcrect, const SDL_Rect *dstrect);
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bool CopyEx(SDL_Renderer *renderer, SDL_Texture *texture, const NGAGE_CopyExData *copydata);
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bool CreateTextureData(NGAGE_TextureData *aTextureData, const TInt aWidth, const TInt aHeight);
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void DrawLines(NGAGE_Vertex *aVerts, const TInt aCount);
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void DrawPoints(NGAGE_Vertex *aVerts, const TInt aCount);
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void FillRects(NGAGE_Vertex *aVerts, const TInt aCount);
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void Flip();
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void SetDrawColor(TUint32 iColor);
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void SetClipRect(TInt aX, TInt aY, TInt aWidth, TInt aHeight);
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void UpdateFPS();
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void SuspendScreenSaver(TBool aSuspend);
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// Event handling.
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void DisableKeyBlocking();
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void HandleEvent(const TWsEvent &aWsEvent);
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void PumpEvents();
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private:
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CRenderer();
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void ConstructL(void);
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// BackBuffer.
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CNRenderer *iRenderer;
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// Direct screen access.
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CDirectScreenAccess *iDirectScreen;
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CFbsBitGc *iScreenGc;
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TBool iIsFocused;
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// Window server session.
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RWsSession iWsSession;
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RWindowGroup iWsWindowGroup;
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TInt iWsWindowGroupID;
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RWindow iWsWindow;
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CWsScreenDevice *iWsScreen;
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// Event handling.
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TRequestStatus iWsEventStatus;
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TWsEvent iWsEvent;
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// MDirectScreenAccess functions.
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void Restart(RDirectScreenAccess::TTerminationReasons aReason);
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void AbortNow(RDirectScreenAccess::TTerminationReasons aReason);
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// Frame per second.
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TBool iShowFPS;
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TUint iFPS;
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const CFont *iFont;
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// Screen saver.
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TBool iSuspendScreenSaver;
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// Work buffers for texture transformations (reusable to avoid per-frame allocations).
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void *iWorkBuffer1;
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void *iWorkBuffer2;
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TInt iWorkBufferSize;
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// Temporary render bitmap to avoid destroying source textures.
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CFbsBitmap *iTempRenderBitmap;
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TInt iTempRenderBitmapWidth;
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TInt iTempRenderBitmapHeight;
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// Color modulation lookup tables (pre-calculated to avoid per-pixel FixMul).
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TUint8 iColorModLUT[768]; // 256 entries each for R, G, B
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TFixed iLastColorR;
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TFixed iLastColorG;
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TFixed iLastColorB;
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// Reusable line points buffer to avoid per-frame allocations in DrawLines.
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TPoint *iLinePointsBuffer;
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TInt iLinePointsBufferCapacity;
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// Cached draw color to avoid redundant SetPenColor/SetBrushColor calls.
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TUint32 iLastDrawColor;
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// Helper methods.
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bool EnsureWorkBufferCapacity(TInt aRequiredSize);
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bool EnsureTempBitmapCapacity(TInt aWidth, TInt aHeight);
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bool EnsureLinePointsCapacity(TInt aRequiredCount);
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void BuildColorModLUT(TFixed rf, TFixed gf, TFixed bf);
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CFbsBitmap *GetCardinalRotation(NGAGE_TextureData *aTextureData, TInt aAngleIndex);
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};
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#endif // ngage_video_render_ngage_c_hpp
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