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-rw-r--r--src/renderer/ShadowCamera.cpp549
1 files changed, 549 insertions, 0 deletions
diff --git a/src/renderer/ShadowCamera.cpp b/src/renderer/ShadowCamera.cpp
new file mode 100644
index 00000000..f69c234f
--- /dev/null
+++ b/src/renderer/ShadowCamera.cpp
@@ -0,0 +1,549 @@
+#include "common.h"
+#include "rwcore.h"
+#include "ShadowCamera.h"
+#include "RwHelper.h"
+
+#define TEXELOFFSET 0.5f
+
+RpAtomic *ShadowRenderCallBack(RpAtomic *atomic, void *data)
+{
+ RpAtomicCallBackRender savedCB = RpAtomicGetRenderCallBack(atomic);
+ RpAtomicSetRenderCallBack(atomic, AtomicDefaultRenderCallBack);
+ RpAtomicRender(atomic);
+ RpAtomicSetRenderCallBack(atomic, savedCB);
+ return atomic;
+}
+
+CShadowCamera::CShadowCamera()
+{
+ m_pCamera = nil;
+ m_pTexture = nil;
+}
+
+CShadowCamera::~CShadowCamera()
+{
+ Destroy();
+}
+
+void
+CShadowCamera::Destroy()
+{
+ if ( m_pCamera )
+ {
+ RwRaster *raster;
+ RwFrame *frame;
+
+ frame = RwCameraGetFrame(m_pCamera);
+
+ if ( frame )
+ {
+ RwCameraSetFrame(m_pCamera, nil);
+ RwFrameDestroy(frame);
+ }
+
+ raster = RwCameraGetZRaster(m_pCamera);
+ if ( raster )
+ {
+ RwCameraSetZRaster(m_pCamera, nil);
+ RwRasterDestroy(raster);
+ }
+
+ raster = RwCameraGetRaster(m_pCamera);
+ if ( raster )
+ {
+ RwCameraSetRaster(m_pCamera, nil);
+ RwRasterDestroy(raster);
+ }
+
+ if ( m_pTexture )
+ {
+ RwTextureSetRaster(m_pTexture, nil);
+ RwTextureDestroy(m_pTexture);
+ m_pTexture = nil;
+ }
+
+ RwCameraDestroy(m_pCamera);
+ m_pCamera = nil;
+ }
+ return;
+}
+
+RwCamera *
+CShadowCamera::Create(int32 rasterSize)
+{
+ int32 size = 1 << rasterSize;
+
+ m_pCamera = RwCameraCreate();
+ ASSERT(m_pCamera != nil);
+
+ if ( m_pCamera )
+ {
+ RwCameraSetFrame(m_pCamera, RwFrameCreate());
+
+ if( RwCameraGetFrame(m_pCamera) )
+ {
+ RwRaster *zRaster = RwRasterCreate(size, size, 0, rwRASTERTYPEZBUFFER);
+ ASSERT(zRaster != nil);
+
+ if ( zRaster )
+ {
+ RwCameraSetZRaster(m_pCamera, zRaster);
+
+ RwRaster *raster = RwRasterCreate(size, size, 0, rwRASTERTYPECAMERATEXTURE);
+ ASSERT(raster != nil);
+
+ if ( raster )
+ {
+ RwCameraSetRaster(m_pCamera, raster);
+ m_pTexture = RwTextureCreate(raster);
+ ASSERT(m_pTexture != nil);
+
+ if ( m_pTexture )
+ {
+ RwTextureSetAddressing(m_pTexture, rwTEXTUREADDRESSCLAMP);
+ RwTextureSetFilterMode(m_pTexture, rwFILTERLINEAR);
+ RwCameraSetProjection(m_pCamera, rwPARALLEL);
+ return (m_pCamera);
+ }
+ }
+ }
+ }
+ }
+
+ Destroy();
+
+ return (nil);
+}
+
+RwCamera *
+CShadowCamera::SetFrustum(float objectRadius)
+{
+ ASSERT(m_pCamera != nil);
+
+ RwV2d vw;
+
+ RwCameraSetFarClipPlane (m_pCamera, 2.0f * objectRadius);
+ RwCameraSetNearClipPlane(m_pCamera, 0.001f * objectRadius);
+
+ vw.x = objectRadius;
+ vw.y = objectRadius;
+ RwCameraSetViewWindow(m_pCamera, &vw);
+
+ return m_pCamera;
+}
+
+RwCamera *
+CShadowCamera::SetLight(RpLight *light)
+{
+ ASSERT(light != nil);
+ ASSERT(m_pCamera != nil);
+
+ RwFrame *camFrame = RwCameraGetFrame(m_pCamera);
+ RwMatrix *camMatrix = RwFrameGetMatrix(camFrame);
+ RwFrame *lightFrame = RpLightGetFrame(light);
+ RwMatrix *lightMatrix = RwFrameGetMatrix(lightFrame);
+
+ *RwMatrixGetRight(camMatrix) = *RwMatrixGetRight(lightMatrix);
+ *RwMatrixGetUp(camMatrix) = *RwMatrixGetUp(lightMatrix);
+ *RwMatrixGetAt(camMatrix) = *RwMatrixGetAt(lightMatrix);
+
+ RwMatrixUpdate(camMatrix);
+ RwFrameUpdateObjects(camFrame);
+
+ return m_pCamera;
+}
+
+RwCamera *
+CShadowCamera::SetCenter(RwV3d *center)
+{
+ ASSERT(center != nil);
+ ASSERT(m_pCamera != nil);
+
+ RwFrame *camFrame = RwCameraGetFrame(m_pCamera);
+ RwMatrix *camMatrix = RwFrameGetMatrix(camFrame);
+
+ *RwMatrixGetPos(camMatrix) = *center;
+
+ RwV3dIncrementScaled(RwMatrixGetPos(camMatrix), RwMatrixGetAt(camMatrix), -0.5f * RwCameraGetFarClipPlane(m_pCamera));
+
+ RwMatrixUpdate(camMatrix);
+ RwFrameUpdateObjects(camFrame);
+ RwFrameOrthoNormalize(camFrame);
+
+ return m_pCamera;
+}
+
+RwCamera *
+CShadowCamera::Update(RpClump *clump)
+{
+ ASSERT(clump != nil);
+ ASSERT(m_pCamera != nil);
+
+ RwUInt32 flags;
+ RpGeometry *geometry;
+
+ RwRGBA bgColor = { 255, 255, 255, 0 };
+
+ RwCameraClear(m_pCamera, &bgColor, rwCAMERACLEARZ | rwCAMERACLEARIMAGE);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ geometry = RpAtomicGetGeometry(GetFirstAtomic(clump));
+ ASSERT(geometry != nil);
+
+ flags = RpGeometryGetFlags(geometry);
+
+ RpGeometrySetFlags(geometry, flags & ~(rpGEOMETRYPRELIT|rpGEOMETRYLIGHT
+ |rpGEOMETRYTEXTURED|rpGEOMETRYTEXTURED2|rpGEOMETRYMODULATEMATERIALCOLOR));
+
+ RpClumpForAllAtomics(clump, ShadowRenderCallBack, nil);
+
+ RpGeometrySetFlags(geometry, flags);
+
+ InvertRaster();
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ return m_pCamera;
+}
+
+RwCamera *
+CShadowCamera::Update(RpAtomic *atomic)
+{
+ ASSERT(atomic != nil);
+ ASSERT(m_pCamera != nil);
+
+ RwUInt32 flags;
+ RpGeometry *geometry;
+
+ RwRGBA bgColor = { 255, 255, 255, 0 };
+
+ RwCameraClear(m_pCamera, &bgColor, rwCAMERACLEARZ | rwCAMERACLEARIMAGE);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ geometry = RpAtomicGetGeometry(atomic);
+ ASSERT(geometry != nil);
+ flags = RpGeometryGetFlags(geometry);
+
+ RpGeometrySetFlags(geometry, flags & ~(rpGEOMETRYPRELIT|rpGEOMETRYLIGHT
+ |rpGEOMETRYTEXTURED|rpGEOMETRYTEXTURED2|rpGEOMETRYMODULATEMATERIALCOLOR|rpGEOMETRYNORMALS));
+
+ ShadowRenderCallBack(atomic, nil);
+
+ RpGeometrySetFlags(geometry, flags);
+
+ InvertRaster();
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ return m_pCamera;
+}
+
+void
+CShadowCamera::InvertRaster()
+{
+ ASSERT(m_pCamera != nil);
+
+ RwIm2DVertex vx[4];
+ float crw, crh;
+ RwRaster *raster;
+ float recipZ;
+
+ raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ crw = (float)RwRasterGetWidth(raster);
+ crh = (float)RwRasterGetHeight(raster);
+
+ recipZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ RwIm2DVertexSetScreenX (&vx[0], 0.0f);
+ RwIm2DVertexSetScreenY (&vx[0], 0.0f);
+ RwIm2DVertexSetScreenZ (&vx[0], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[0], recipZ);
+ RwIm2DVertexSetIntRGBA (&vx[0], 255, 255, 255, 255);
+
+ RwIm2DVertexSetScreenX (&vx[1], 0.0f);
+ RwIm2DVertexSetScreenY (&vx[1], crh);
+ RwIm2DVertexSetScreenZ (&vx[1], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[1], recipZ);
+ RwIm2DVertexSetIntRGBA (&vx[1], 255, 255, 255, 255);
+
+ RwIm2DVertexSetScreenX (&vx[2], crw);
+ RwIm2DVertexSetScreenY (&vx[2], 0.0f);
+ RwIm2DVertexSetScreenZ (&vx[2], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[2], recipZ);
+ RwIm2DVertexSetIntRGBA (&vx[2], 255, 255, 255, 255);
+
+ RwIm2DVertexSetScreenX (&vx[3], crw);
+ RwIm2DVertexSetScreenY (&vx[3], crh);
+ RwIm2DVertexSetScreenZ (&vx[3], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[3], recipZ);
+ RwIm2DVertexSetIntRGBA (&vx[3], 255, 255, 255, 255);
+
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)nil);
+ RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDINVDESTCOLOR);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDZERO);
+
+ RwIm2DRenderPrimitive(rwPRIMTYPETRISTRIP, vx, 4);
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDINVSRCALPHA);
+}
+
+RwRaster *
+CShadowCamera::MakeGradientRaster()
+{
+ ASSERT(m_pCamera != nil);
+
+ RwIm2DVertex vx[2];
+
+ if ( !m_pCamera )
+ return nil;
+
+ float recipCamZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ RwRaster *raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ float width = (float)RwRasterGetWidth(raster);
+ float height = (float)RwRasterGetHeight(raster);
+
+ if ( height < 1 )
+ return nil;
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)rwFILTERNAFILTERMODE);
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDZERO);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDINVDESTCOLOR);
+ RwRenderStateSet(rwRENDERSTATESHADEMODE, (void *)rwSHADEMODEFLAT);
+
+ float color = 255.0f;
+ float step = (-191.0f / height);
+
+ for ( int32 i = 0; i < height; i++ )
+ {
+ RwIm2DVertexSetScreenX (&vx[0], 0.0f);
+ RwIm2DVertexSetScreenY (&vx[0], i);
+ RwIm2DVertexSetScreenZ (&vx[0], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[0], recipCamZ);
+ RwIm2DVertexSetIntRGBA (&vx[0], (uint32)color, (uint32)color, (uint32)color, (uint32)color);
+
+ RwIm2DVertexSetScreenX (&vx[1], width - 1);
+ RwIm2DVertexSetScreenY (&vx[1], i);
+ RwIm2DVertexSetScreenZ (&vx[1], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetRecipCameraZ(&vx[1], recipCamZ);
+ RwIm2DVertexSetIntRGBA (&vx[1], (uint32)color, (uint32)color, (uint32)color, (uint32)color);
+
+ RwIm2DRenderLine(vx, 2, 0, 1);
+
+ color += step;
+ }
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDINVSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATESHADEMODE, (void *)rwSHADEMODEGOURAUD);
+
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ return raster;
+}
+
+RwRaster *
+CShadowCamera::RasterResample(RwRaster *dstRaster)
+{
+ ASSERT(dstRaster != nil);
+ ASSERT(m_pCamera != nil);
+
+ if ( !m_pCamera )
+ return nil;
+
+ RwRaster *raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ float size = (float) RwRasterGetWidth(raster);
+ float uvOffset = TEXELOFFSET / size;
+ float recipCamZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDONE);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDZERO);
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void *)rwFILTERLINEAR);
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)dstRaster);
+
+ Im2DRenderQuad(0.0f, 0.0f, size, size, RwIm2DGetNearScreenZ(), recipCamZ, uvOffset);
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDINVSRCALPHA);
+
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ return raster;
+}
+
+RwRaster *
+CShadowCamera::RasterBlur(RwRaster *dstRaster, int32 numPasses)
+{
+ ASSERT(dstRaster != nil);
+ ASSERT(m_pCamera != nil);
+
+ if ( !m_pCamera )
+ return nil;
+
+ RwRaster *raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ float size = (float) RwRasterGetWidth(dstRaster);
+ float recipCamZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ for (int i = 0; i < numPasses; i++ )
+ {
+ RwCameraSetRaster(m_pCamera, raster);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ if ( i == 0 )
+ {
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDONE);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDZERO);
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void *)rwFILTERLINEAR);
+ }
+
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)dstRaster);
+ Im2DRenderQuad(0.0f, 0.0f, size, size, RwIm2DGetNearScreenZ(), recipCamZ, 1.0f / size);
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ RwCameraSetRaster(m_pCamera, dstRaster);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)raster);
+ Im2DRenderQuad(0.0f, 0.0f, size, size, RwIm2DGetNearScreenZ(), recipCamZ, 0);
+
+ if ( i == numPasses - 1 )
+ {
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDINVSRCALPHA);
+ }
+
+ RwCameraEndUpdate(m_pCamera);
+ }
+ }
+
+ RwCameraSetRaster(m_pCamera, raster);
+
+ return dstRaster;
+}
+
+RwRaster *
+CShadowCamera::RasterGradient(RwRaster *dstRaster)
+{
+ ASSERT(dstRaster != nil);
+ ASSERT(m_pCamera != nil);
+
+ RwRaster *raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ float size = (float)RwRasterGetWidth(dstRaster);
+ float recipCamZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ RwCameraSetRaster(m_pCamera, dstRaster);
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDZERO);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDSRCCOLOR);
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void *)rwFILTERLINEAR);
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)raster);
+
+ Im2DRenderQuad(0, 0, size, size, RwIm2DGetNearScreenZ(), recipCamZ, 0);
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATESRCBLEND, (void *)rwBLENDSRCALPHA);
+ RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void *)rwBLENDINVSRCALPHA);
+
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ RwCameraSetRaster(m_pCamera, raster);
+
+ return dstRaster;
+}
+
+RwRaster *CShadowCamera::DrawOutlineBorder(RwRGBA const& color)
+{
+ ASSERT(m_pCamera != nil);
+
+ RwIm2DVertex vx[4];
+ RwImVertexIndex ix[5];
+
+ RwRaster *raster = RwCameraGetRaster(m_pCamera);
+ ASSERT(raster != nil);
+
+ float size = (float)RwRasterGetWidth(raster) - 1.0f;
+ float recipCamZ = 1.0f / RwCameraGetNearClipPlane(m_pCamera);
+
+ RwIm2DVertexSetScreenX (&vx[0], 0.0f);
+ RwIm2DVertexSetScreenY (&vx[0], 0.0f);
+ RwIm2DVertexSetScreenZ (&vx[0], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetIntRGBA (&vx[0], color.red, color.green, color.blue, color.alpha);
+ RwIm2DVertexSetRecipCameraZ(&vx[0], recipCamZ);
+
+ RwIm2DVertexSetScreenX (&vx[1], size);
+ RwIm2DVertexSetScreenY (&vx[1], 0.0f);
+ RwIm2DVertexSetScreenZ (&vx[1], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetIntRGBA (&vx[1], color.red, color.green, color.blue, color.alpha);
+ RwIm2DVertexSetRecipCameraZ(&vx[1], recipCamZ);
+
+ RwIm2DVertexSetScreenX (&vx[2], size);
+ RwIm2DVertexSetScreenY (&vx[2], size);
+ RwIm2DVertexSetScreenZ (&vx[2], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetIntRGBA (&vx[2], color.red, color.green, color.blue, color.alpha);
+ RwIm2DVertexSetRecipCameraZ(&vx[2], recipCamZ);
+
+ RwIm2DVertexSetScreenX (&vx[3], 0.0f);
+ RwIm2DVertexSetScreenY (&vx[3], size);
+ RwIm2DVertexSetScreenZ (&vx[3], RwIm2DGetNearScreenZ());
+ RwIm2DVertexSetIntRGBA (&vx[3], color.red, color.green, color.blue, color.alpha);
+ RwIm2DVertexSetRecipCameraZ(&vx[3], recipCamZ);
+
+ ix[0] = 0;
+ ix[4] = 0;
+ ix[1] = 1;
+ ix[2] = 2;
+ ix[3] = 3;
+
+ if ( RwCameraBeginUpdate(m_pCamera) )
+ {
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void *)FALSE);
+ RwRenderStateSet(rwRENDERSTATETEXTURERASTER, (void *)nil);
+
+ RwIm2DRenderIndexedPrimitive(rwPRIMTYPEPOLYLINE, vx, 4, ix, 5);
+
+ RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void *)TRUE);
+ RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void *)TRUE);
+
+ RwCameraEndUpdate(m_pCamera);
+ }
+
+ return raster;
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 17:12:08 +0200