implemented extended postfx

1 files changed, 516 insertions, 0 deletions

diff --git a/src/extras/postfx.cpp b/src/extras/postfx.cpp
new file mode 100644
index 00000000..e8cd4bc4
--- /dev/null
+++ b/src/extras/postfx.cpp
@@ -0,0 +1,516 @@
+#define WITHWINDOWS
+#define WITH_D3D
+#include "common.h"
+
+#ifdef EXTENDED_COLOURFILTER
+
+#ifndef LIBRW
+#error "Need librw for EXTENDED_COLOURFILTER"
+#endif
+
+#include "RwHelper.h"
+#include "Camera.h"
+#include "MBlur.h"
+#include "postfx.h"
+
+RwRaster *CPostFX::pFrontBuffer;
+RwRaster *CPostFX::pBackBuffer;
+bool CPostFX::bJustInitialised;
+int CPostFX::EffectSwitch = POSTFX_NORMAL;
+bool CPostFX::BlurOn = false;
+bool CPostFX::MotionBlurOn = false;
+
+static RwIm2DVertex Vertex[4];
+static RwIm2DVertex Vertex2[4];
+static RwImVertexIndex Index[6] = { 0, 1, 2, 0, 2, 3 };
+
+#ifdef RW_D3D9
+void *colourfilterVC_PS;
+void *contrast_PS;
+#endif
+#ifdef RW_OPENGL
+int32 u_blurcolor;
+int32 u_contrastAdd;
+int32 u_contrastMult;
+rw::gl3::Shader *colourFilterVC;
+rw::gl3::Shader *contrast;
+#endif
+
+void
+CPostFX::InitOnce(void)
+{
+#ifdef RW_OPENGL
+	u_blurcolor = rw::gl3::registerUniform("u_blurcolor");
+	u_contrastAdd = rw::gl3::registerUniform("u_contrastAdd");
+	u_contrastMult = rw::gl3::registerUniform("u_contrastMult");
+#endif
+}
+
+void
+CPostFX::Open(RwCamera *cam)
+{
+	uint32 width  = Pow(2.0f, int32(log2(RwRasterGetWidth (RwCameraGetRaster(cam))))+1);
+	uint32 height = Pow(2.0f, int32(log2(RwRasterGetHeight(RwCameraGetRaster(cam))))+1);
+	uint32 depth  = RwRasterGetDepth(RwCameraGetRaster(cam));
+	pFrontBuffer = RwRasterCreate(width, height, depth, rwRASTERTYPECAMERATEXTURE);
+	pBackBuffer = RwRasterCreate(width, height, depth, rwRASTERTYPECAMERATEXTURE);
+	bJustInitialised = true;
+
+	float zero, xmax, ymax;
+
+	if(RwRasterGetDepth(RwCameraGetRaster(cam)) == 16){
+		zero = HALFPX;
+		xmax = width + HALFPX;
+		ymax = height + HALFPX;
+	}else{
+		zero = -HALFPX;
+		xmax = width - HALFPX;
+		ymax = height - HALFPX;
+	}
+
+	RwIm2DVertexSetScreenX(&Vertex[0], zero);
+	RwIm2DVertexSetScreenY(&Vertex[0], zero);
+	RwIm2DVertexSetScreenZ(&Vertex[0], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[0], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[0], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[0], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[1], zero);
+	RwIm2DVertexSetScreenY(&Vertex[1], ymax);
+	RwIm2DVertexSetScreenZ(&Vertex[1], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[1], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[1], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[1], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[1], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[1], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[2], xmax);
+	RwIm2DVertexSetScreenY(&Vertex[2], ymax);
+	RwIm2DVertexSetScreenZ(&Vertex[2], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[2], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[2], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[2], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[3], xmax);
+	RwIm2DVertexSetScreenY(&Vertex[3], zero);
+	RwIm2DVertexSetScreenZ(&Vertex[3], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[3], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[3], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[3], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[3], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[3], 255, 255, 255, 255);
+
+
+	RwIm2DVertexSetScreenX(&Vertex2[0], zero + 2.0f);
+	RwIm2DVertexSetScreenY(&Vertex2[0], zero + 2.0f);
+	RwIm2DVertexSetScreenZ(&Vertex2[0], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex2[0], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex2[0], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex2[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex2[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex2[0], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex2[1], 2.0f);
+	RwIm2DVertexSetScreenY(&Vertex2[1], ymax + 2.0f);
+	RwIm2DVertexSetScreenZ(&Vertex2[1], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex2[1], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex2[1], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex2[1], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex2[1], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex2[1], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex2[2], xmax + 2.0f);
+	RwIm2DVertexSetScreenY(&Vertex2[2], ymax + 2.0f);
+	RwIm2DVertexSetScreenZ(&Vertex2[2], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex2[2], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex2[2], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex2[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex2[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex2[2], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex2[3], xmax + 2.0f);
+	RwIm2DVertexSetScreenY(&Vertex2[3], zero + 2.0f);
+	RwIm2DVertexSetScreenZ(&Vertex2[3], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex2[3], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex2[3], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex2[3], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex2[3], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex2[3], 255, 255, 255, 255);
+
+
+#ifdef RW_D3D9
+#include "shaders/colourfilterVC_PS.inc"
+	colourfilterVC_PS = rw::d3d::createPixelShader(colourfilterVC_PS_cso);
+#include "shaders/contrastPS.inc"
+	contrast_PS = rw::d3d::createPixelShader(contrastPS_cso);
+#endif
+#ifdef RW_OPENGL
+	using namespace rw::gl3;
+//	AllocConsole();
+//	freopen("CONIN$", "r", stdin);
+//	freopen("CONOUT$", "w", stdout);
+//	freopen("CONOUT$", "w", stderr);
+
+
+	{
+#ifdef RW_GLES2
+#include "gl2_shaders/im2d_gl2.inc"
+#include "gl2_shaders/colourfilterVC_fs_gl2.inc"
+#else
+#include "shaders/im2d_gl3.inc"
+#include "shaders/colourfilterVC_fs_gl3.inc"
+#endif
+	const char *vs[] = { shaderDecl, header_vert_src, im2d_vert_src, nil };
+	const char *fs[] = { shaderDecl, header_frag_src, colourfilterVC_frag_src, nil };
+	colourFilterVC = Shader::create(vs, fs);
+	assert(colourFilterVC);
+	}
+
+	{
+#ifdef RW_GLES2
+#include "gl2_shaders/im2d_gl2.inc"
+#include "gl2_shaders/contrast_fs_gl2.inc"
+#else
+#include "shaders/im2d_gl3.inc"
+#include "shaders/contrast_fs_gl3.inc"
+	const char *vs[] = { shaderDecl, header_vert_src, im2d_vert_src, nil };
+	const char *fs[] = { shaderDecl, header_frag_src, contrast_frag_src, nil };
+	contrast = Shader::create(vs, fs);
+	assert(contrast);
+#endif
+	}
+
+#endif
+}
+
+void
+CPostFX::Close(void)
+{
+	if(pFrontBuffer){
+		RwRasterDestroy(pFrontBuffer);
+		pFrontBuffer = nil;
+	}
+	if(pBackBuffer){
+		RwRasterDestroy(pBackBuffer);
+		pBackBuffer = nil;
+	}
+#ifdef RW_D3D9
+	if(colourfilterVC_PS){
+		rw::d3d::destroyPixelShader(colourfilterVC_PS);
+		colourfilterVC_PS = nil;
+	}
+	if(contrast_PS){
+		rw::d3d::destroyPixelShader(contrast_PS);
+		contrast_PS = nil;
+	}
+#endif
+#ifdef RW_OPENGL
+	if(colourFilterVC){
+		colourFilterVC->destroy();
+		colourFilterVC = nil;
+	}
+	if(contrast){
+		contrast->destroy();
+		contrast = nil;
+	}
+#endif
+}
+
+void
+CPostFX::RenderOverlayBlur(RwCamera *cam, int32 r, int32 g, int32 b, int32 a)
+{
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, pFrontBuffer);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+
+	RwIm2DVertexSetIntRGBA(&Vertex[0], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex[1], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex[2], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex[3], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex2[0], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex2[1], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex2[2], r*2, g*2, b*2, 30);
+	RwIm2DVertexSetIntRGBA(&Vertex2[3], r*2, g*2, b*2, 30);
+
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, BlurOn ? Vertex2 : Vertex, 4, Index, 6);
+
+
+	RwIm2DVertexSetIntRGBA(&Vertex2[0], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[0], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex2[1], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[1], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex2[2], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[2], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex2[3], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[3], r, g, b, a);
+
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDONE);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDONE);
+
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, BlurOn ? Vertex2 : Vertex, 4, Index, 6);
+}
+
+void
+CPostFX::RenderOverlaySniper(RwCamera *cam, int32 r, int32 g, int32 b, int32 a)
+{
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, pFrontBuffer);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+
+	RwIm2DVertexSetIntRGBA(&Vertex[0], r, g, b, 80);
+	RwIm2DVertexSetIntRGBA(&Vertex[1], r, g, b, 80);
+	RwIm2DVertexSetIntRGBA(&Vertex[2], r, g, b, 80);
+	RwIm2DVertexSetIntRGBA(&Vertex[3], r, g, b, 80);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+}
+
+float CPostFX::Intensity = 1.0f;
+
+void
+CPostFX::RenderOverlayShader(RwCamera *cam, int32 r, int32 g, int32 b, int32 a)
+{
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, pBackBuffer);
+
+	if(EffectSwitch == POSTFX_MOBILE){
+		float mult[3], add[3];
+		mult[0] = (r-64)/256.0f + 1.4f;
+		mult[1] = (g-64)/256.0f + 1.4f;
+		mult[2] = (b-64)/256.0f + 1.4f;
+		add[0] = r/1536.f - 0.05f;
+		add[1] = g/1536.f - 0.05f;
+		add[2] = b/1536.f - 0.05f;
+#ifdef RW_D3D9
+		rw::d3d::d3ddevice->SetPixelShaderConstantF(10, mult, 1);
+		rw::d3d::d3ddevice->SetPixelShaderConstantF(11, add, 1);
+
+		rw::d3d::im2dOverridePS = contrast_PS;
+#endif
+#ifdef RW_OPENGL
+		rw::gl3::im2dOverrideShader = contrast;
+		contrast->use();
+		glUniform3fv(contrast->uniformLocations[u_contrastMult], 1, mult);
+		glUniform3fv(contrast->uniformLocations[u_contrastAdd], 1, add);
+#endif
+	}else{
+		float f = Intensity;
+		float blurcolors[4];
+		blurcolors[0] = r*f/255.0f;
+		blurcolors[1] = g*f/255.0f;
+		blurcolors[2] = b*f/255.0f;
+		blurcolors[3] = 30/255.0f;
+#ifdef RW_D3D9
+		rw::d3d::d3ddevice->SetPixelShaderConstantF(10, blurcolors, 1);
+
+/*
+		float blurcolors[NUMAVERAGE*4];
+		int j = Next;
+		for(int i = NUMAVERAGE-1; i >= 0; i--){
+			j = (j+NUMAVERAGE-1)%NUMAVERAGE;
+//			blurcolors[i*4+0] = PrevRed[j]/255.0f;
+//			blurcolors[i*4+1] = PrevGreen[j]/255.0f;
+//			blurcolors[i*4+2] = PrevBlue[j]/255.0f;
+//			blurcolors[i*4+3] = Intensity/255.0f;
+
+			blurcolors[i*4+0] = r/255.0f;
+			blurcolors[i*4+1] = g/255.0f;
+			blurcolors[i*4+2] = b/255.0f;
+			blurcolors[i*4+3] = Intensity/255.0f;
+		}
+		rw::d3d::d3ddevice->SetPixelShaderConstantF(15, blurcolors, NUMAVERAGE);
+*/
+
+		rw::d3d::im2dOverridePS = colourfilterVC_PS;
+#endif
+#ifdef RW_OPENGL
+		rw::gl3::im2dOverrideShader = colourFilterVC;
+		colourFilterVC->use();
+		glUniform4fv(colourFilterVC->uniformLocations[u_blurcolor], 1, blurcolors);
+#endif
+	}
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+#ifdef RW_D3D9
+	rw::d3d::im2dOverridePS = nil;
+#endif
+#ifdef RW_OPENGL
+	rw::gl3::im2dOverrideShader = nil;
+#endif
+}
+
+void
+CPostFX::RenderMotionBlur(RwCamera *cam, uint32 blur)
+{
+	if(blur == 0)
+		return;
+
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, pFrontBuffer);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+
+	RwIm2DVertexSetIntRGBA(&Vertex[0], 255, 255, 255, blur);
+	RwIm2DVertexSetIntRGBA(&Vertex[1], 255, 255, 255, blur);
+	RwIm2DVertexSetIntRGBA(&Vertex[2], 255, 255, 255, blur);
+	RwIm2DVertexSetIntRGBA(&Vertex[3], 255, 255, 255, blur);
+
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+}
+
+bool
+CPostFX::NeedBackBuffer(void)
+{
+	// Current frame -- needed for non-blur effect
+	switch(EffectSwitch){
+	case POSTFX_OFF:
+	case POSTFX_SIMPLE:
+		// no actual rendering here
+		return false;
+	case POSTFX_NORMAL:
+		if(MotionBlurOn)
+			return false;
+		else
+			return true;
+	case POSTFX_MOBILE:
+		return true;
+	}
+	return false;
+}
+
+bool
+CPostFX::NeedFrontBuffer(int32 type)
+{
+	// Last frame -- needed for motion blur
+	if(CMBlur::Drunkness > 0.0f)
+		return true;
+	if(type == MOTION_BLUR_SNIPER)
+		return true;
+
+	switch(EffectSwitch){
+	case POSTFX_OFF:
+	case POSTFX_SIMPLE:
+		// no actual rendering here
+		return false;
+	case POSTFX_NORMAL:
+		if(MotionBlurOn)
+			return true;
+		else
+			return false;
+	case POSTFX_MOBILE:
+		return false;
+	}
+	return false;
+}
+
+void
+CPostFX::Render(RwCamera *cam, uint32 red, uint32 green, uint32 blue, uint32 blur, int32 type, uint32 bluralpha)
+{
+	if(pFrontBuffer == nil)
+		Open(cam);
+	assert(pFrontBuffer);
+	assert(pBackBuffer);
+
+	if(type == MOTION_BLUR_LIGHT_SCENE){
+		SmoothColor(red, green, blue, blur);
+		red = AvgRed;
+		green = AvgGreen;
+		blue = AvgBlue;
+		blur = AvgAlpha;
+	}
+
+	if(NeedBackBuffer()){
+		RwRasterPushContext(pBackBuffer);
+		RwRasterRenderFast(RwCameraGetRaster(cam), 0, 0);
+		RwRasterPopContext();
+	}
+
+	DefinedState();
+
+	RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void*)rwFILTERNEAREST);
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)FALSE);
+
+	if(type == MOTION_BLUR_SNIPER){
+		if(!bJustInitialised)
+			RenderOverlaySniper(cam, red, green, blue, blur);
+	}else switch(EffectSwitch){
+	case POSTFX_OFF:
+	case POSTFX_SIMPLE:
+		// no actual rendering here
+		break;
+	case POSTFX_NORMAL:
+		if(MotionBlurOn){
+			if(!bJustInitialised)
+				RenderOverlayBlur(cam, red, green, blue, blur);
+		}else{
+			RenderOverlayShader(cam, red, green, blue, blur);
+		}
+		break;
+	case POSTFX_MOBILE:
+		RenderOverlayShader(cam, red, green, blue, blur);
+		break;
+	}
+
+	if(!bJustInitialised)
+		RenderMotionBlur(cam, 175.0f * CMBlur::Drunkness);
+
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, nil);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+
+	if(NeedFrontBuffer(type)){
+		RwRasterPushContext(pFrontBuffer);
+		RwRasterRenderFast(RwCameraGetRaster(cam), 0, 0);
+		RwRasterPopContext();
+		bJustInitialised = false;
+	}else
+		bJustInitialised = true;
+}
+
+int CPostFX::PrevRed[NUMAVERAGE], CPostFX::AvgRed;
+int CPostFX::PrevGreen[NUMAVERAGE], CPostFX::AvgGreen;
+int CPostFX::PrevBlue[NUMAVERAGE], CPostFX::AvgBlue;
+int CPostFX::PrevAlpha[NUMAVERAGE], CPostFX::AvgAlpha;
+int CPostFX::Next;
+int CPostFX::NumValues;
+
+// This is rather annoying...the blur color can flicker slightly
+// which becomes very visible when amplified by the shader
+void
+CPostFX::SmoothColor(uint32 red, uint32 green, uint32 blue, uint32 alpha)
+{
+	PrevRed[Next] = red;
+	PrevGreen[Next] = green;
+	PrevBlue[Next] = blue;
+	PrevAlpha[Next] = alpha;
+	Next = (Next+1) % NUMAVERAGE;
+	NumValues = Min(NumValues+1, NUMAVERAGE);
+
+	AvgRed = 0;
+	AvgGreen = 0;
+	AvgBlue = 0;
+	AvgAlpha = 0;
+	for(int i = 0; i < NumValues; i++){
+		AvgRed += PrevRed[i];
+		AvgGreen += PrevGreen[i];
+		AvgBlue += PrevBlue[i];
+		AvgAlpha += PrevAlpha[i];
+	}
+	AvgRed /= NumValues;
+	AvgGreen /= NumValues;
+	AvgBlue /= NumValues;
+	AvgAlpha /= NumValues;
+}
+
+#endif