Initial commit.

code/win32/win_highdynamicrange.h

@@ -0,0 +1,77 @@
+//
+//
+// Win_HighDynamicRange.h
+//
+// Declaration of high dynamic range effect class
+//
+//
+
+#ifndef _WIN_HIGHDYNAMICRANGE_H_
+#define _WIN_HIGHDYNAMICRANGE_H_
+
+struct FilterSample
+{
+    float fValue;               // coefficient
+    float fOffsetX, fOffsetY;   // subpixel offsets of supersamples in
+                                //   destination coordinates
+};
+
+
+class VVHighDynamicRange
+{
+    // The blur filters are multipass and need temporary space.
+#define BLUR_COUNT 2
+    D3DTexture *m_rpHotImage;           // hot image
+    D3DTexture *m_rpBlur[BLUR_COUNT];   // bluring textures of decreasing size
+    D3DTexture *m_pBlur;                // current blur texture, set by Blur()
+
+    // Light blend intensity scale factor
+    float m_fBloomScale;
+  
+    // Pixel shader handles
+    DWORD m_dwHotBlurPixelShader;      // blur the hot image
+    DWORD m_dwExtractHotPixelShader;   // extract hot image
+
+	bool  m_bInitialized;
+  
+    // Filtering routine that draws the source texture multiple
+    // times, with sub-pixel offsets and filter coefficients.
+    void FilterCopy( LPDIRECT3DTEXTURE9 pTextureDst,
+                        LPDIRECT3DTEXTURE9 pTextureSrc,
+                        UINT nSample,
+                        FilterSample rSample[],
+                        UINT nSuperSampleX,
+                        UINT nSuperSampleY,
+                        bool bCrap,
+                        RECT *pRectDst = NULL,  // The destination texture is
+                                                //   written only within this
+                                                //   region.
+                        RECT *pRectSrc = NULL );// The source texture is read
+                                                //   outside of this region by
+                                                //   the halfwidth of the
+                                                //   filter.
+
+    // extract hot image with downsamping
+    void ExtractHot( LPDIRECT3DTEXTURE9 pTextureDst,
+                        LPDIRECT3DTEXTURE9 pTextureSrc,
+                        UINT nSuperSampleX, UINT nSuperSampleY,
+                        RECT* pRectDst = NULL,
+                        RECT* pRectSrc = NULL );
+                       
+    // Blur hot texture and set m_pBlur.  Calls FilterCopy with
+    // different filter coefficients and offsets
+    void HotBlur();
+    
+    // Demonstrate the inputs to the full high dynamic range effect.
+    void DrawHotBlur(); // draw blurred "hot" texture
+    
+public:
+    virtual void Initialize();
+    virtual void Render();
+
+    VVHighDynamicRange();
+};
+
+extern VVHighDynamicRange HDREffect;
+
+#endif