Import Cai1Hsu/re3 @ miami (reVC / GTA:VC decompilation)HEADmiami

Snapshot import (no upstream history) into git.ancap.in.ua/claude, per @lzcnt.
Source: https://github.com/Cai1Hsu/re3 branch miami.

1 files changed, 800 insertions, 0 deletions

diff --git a/src/rw/RwHelper.cpp b/src/rw/RwHelper.cpp
new file mode 100644
index 0000000..9b0ba13
--- /dev/null
+++ b/src/rw/RwHelper.cpp
@@ -0,0 +1,800 @@
+#define WITHD3D
+#include "common.h"
+
+#include "Timecycle.h"
+#include "skeleton.h"
+#include "Debug.h"
+#if !defined(FINAL) || defined(DEBUGMENU)
+#include "rtcharse.h"
+#endif
+#ifndef FINAL
+RtCharset *debugCharset;
+bool bDebugRenderGroups;
+#endif
+
+#ifdef PS2_ALPHA_TEST
+bool gPS2alphaTest = true;
+#else
+bool gPS2alphaTest = false;
+#endif
+bool gBackfaceCulling = true;
+
+#if !defined(FINAL) || defined(DEBUGMENU)
+static bool charsetOpen;
+void OpenCharsetSafe()
+{
+	if(!charsetOpen)
+		RtCharsetOpen();
+	charsetOpen = true;
+}
+#endif
+
+void CreateDebugFont()
+{
+#ifndef FINAL
+	RwRGBA color = { 255, 255, 128, 255 };
+	RwRGBA colorbg = { 0, 0, 0, 0 };
+	OpenCharsetSafe();
+	debugCharset = RtCharsetCreate(&color, &colorbg);
+#endif
+}
+
+void DestroyDebugFont()
+{
+#ifndef FINAL
+	RtCharsetDestroy(debugCharset);
+	RtCharsetClose();
+	charsetOpen = false;
+#endif
+}
+
+void ObrsPrintfString(const char *str, short x, short y)
+{
+#ifndef FINAL
+	RtCharsetPrintBuffered(debugCharset, str, x*8, y*16, true);
+#endif
+}
+
+void FlushObrsPrintfs()
+{
+#ifndef FINAL
+	RtCharsetBufferFlush();
+#endif
+}
+
+void
+DefinedState(void)
+{
+	RwRenderStateSet(rwRENDERSTATETEXTUREADDRESS, (void*)rwTEXTUREADDRESSWRAP);
+	RwRenderStateSet(rwRENDERSTATETEXTUREPERSPECTIVE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATESHADEMODE, (void*)rwSHADEMODEGOURAUD);
+	RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void*)rwFILTERLINEAR);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+	//RwRenderStateSet(rwRENDERSTATEALPHAPRIMITIVEBUFFER, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEBORDERCOLOR, (void*)RWRGBALONG(0, 0, 0, 255));
+	RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEFOGCOLOR,
+		(void*)RWRGBALONG(CTimeCycle::GetFogRed(), CTimeCycle::GetFogGreen(), CTimeCycle::GetFogBlue(), 255));
+	RwRenderStateSet(rwRENDERSTATEFOGTYPE, (void*)rwFOGTYPELINEAR);
+	RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)rwCULLMODECULLNONE);
+
+#ifdef LIBRW
+	rw::SetRenderState(rw::ALPHATESTFUNC, rw::ALPHAGREATEREQUAL);
+	rw::SetRenderState(rw::ALPHATESTREF, 3);
+
+	rw::SetRenderState(rw::GSALPHATEST, gPS2alphaTest);
+#else
+	// D3D stuff
+	RwD3D8SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATER);
+	RwD3D8SetRenderState(D3DRS_ALPHAREF, 2);
+#endif
+}
+
+void
+SetCullMode(uint32 mode)
+{
+	if(gBackfaceCulling)
+		RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)mode);
+	else
+		RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)rwCULLMODECULLNONE);
+}
+
+#ifndef FINAL
+void
+PushRendergroup(const char *name)
+{
+	if(!bDebugRenderGroups)
+		return;
+#if defined(RW_OPENGL)
+	if(GLAD_GL_KHR_debug)
+		glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, -1, name);
+#elif defined(RW_D3D9)
+	static WCHAR tmp[256];
+	MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, tmp, sizeof(tmp));
+	D3DPERF_BeginEvent(0xFFFFFFFF, tmp);
+#endif
+}
+
+void
+PopRendergroup(void)
+{
+	if(!bDebugRenderGroups)
+		return;
+#if defined(RW_OPENGL)
+	if(GLAD_GL_KHR_debug)
+		glPopDebugGroup();
+#elif defined(RW_D3D9)
+	D3DPERF_EndEvent();
+#endif
+}
+#endif
+
+RwFrame*
+GetFirstFrameCallback(RwFrame *child, void *data)
+{
+	*(RwFrame**)data = child;
+	return nil;
+}
+
+RwFrame*
+GetFirstChild(RwFrame *frame)
+{
+	RwFrame *child;
+
+	child = nil;
+	RwFrameForAllChildren(frame, GetFirstFrameCallback, &child);
+	return child;
+}
+
+RwObject*
+GetFirstObjectCallback(RwObject *object, void *data)
+{
+	*(RwObject**)data = object;
+	return nil;
+}
+
+RwObject*
+GetFirstObject(RwFrame *frame)
+{
+	RwObject *obj;
+
+	obj = nil;
+	RwFrameForAllObjects(frame, GetFirstObjectCallback, &obj);
+	return obj;
+}
+
+RpAtomic*
+GetFirstAtomicCallback(RpAtomic *atm, void *data)
+{
+	*(RpAtomic**)data = atm;
+	return nil;
+}
+
+RpAtomic*
+GetFirstAtomic(RpClump *clump)
+{
+	RpAtomic *atm;
+
+	atm = nil;
+	RpClumpForAllAtomics(clump, GetFirstAtomicCallback, &atm);
+	return atm;
+}
+
+RwTexture*
+GetFirstTextureCallback(RwTexture *tex, void *data)
+{
+	*(RwTexture**)data = tex;
+	return nil;
+}
+
+RwTexture*
+GetFirstTexture(RwTexDictionary *txd)
+{
+	RwTexture *tex;
+
+	tex = nil;
+	RwTexDictionaryForAllTextures(txd, GetFirstTextureCallback, &tex);
+	return tex;
+}
+
+bool
+IsClumpSkinned(RpClump *clump)
+{
+	RpAtomic *atomic = GetFirstAtomic(clump);
+	return atomic ? RpSkinGeometryGetSkin(RpAtomicGetGeometry(atomic)) : nil;
+}
+
+static RpAtomic*
+GetAnimHierarchyCallback(RpAtomic *atomic, void *data)
+{
+	*(RpHAnimHierarchy**)data = RpSkinAtomicGetHAnimHierarchy(atomic);
+	return nil;
+}
+
+RpHAnimHierarchy*
+GetAnimHierarchyFromSkinClump(RpClump *clump)
+{
+	RpHAnimHierarchy *hier = nil;
+	RpClumpForAllAtomics(clump, GetAnimHierarchyCallback, &hier);
+	return hier;
+}
+
+static RwFrame*
+GetAnimHierarchyFromClumpCB(RwFrame *frame, void *data)
+{
+	RpHAnimHierarchy *hier = RpHAnimFrameGetHierarchy(frame);
+	if(hier){
+		*(RpHAnimHierarchy**)data = hier;
+		return nil;
+	}
+	RwFrameForAllChildren(frame, GetAnimHierarchyFromClumpCB, data);
+	return frame;
+}
+
+RpHAnimHierarchy*
+GetAnimHierarchyFromClump(RpClump *clump)
+{
+	RpHAnimHierarchy *hier = nil;
+	RwFrameForAllChildren(RpClumpGetFrame(clump), GetAnimHierarchyFromClumpCB, &hier);
+	return hier;
+}
+
+void
+SkinGetBonePositionsToTable(RpClump *clump, RwV3d *boneTable)
+{
+	int i, parent;
+	RpAtomic *atomic;
+	RpSkin *skin;
+	RpHAnimHierarchy *hier;
+	int numBones;
+	RwMatrix m, invmat;
+	int stack[32];
+	int sp;
+
+	if(boneTable == nil)
+		return;
+
+	atomic = GetFirstAtomic(clump);		// mobile, also VC
+	assert(atomic);
+	skin = RpSkinGeometryGetSkin(RpAtomicGetGeometry(atomic));
+	assert(skin);
+	hier = GetAnimHierarchyFromSkinClump(clump);
+	assert(hier);
+	boneTable[0].x = 0.0f;
+	boneTable[0].y = 0.0f;
+	boneTable[0].z = 0.0f;
+	numBones = RpSkinGetNumBones(skin);
+	parent = 0;
+	sp = 0;
+#ifdef FIX_BUGS
+	stack[0] = 0;	// i think this is ok
+#endif
+	for(i = 1; i < numBones; i++){
+		RwMatrixCopy(&m, &RpSkinGetSkinToBoneMatrices(skin)[i]);
+		RwMatrixInvert(&invmat, &m);
+		const RwMatrix *x = RpSkinGetSkinToBoneMatrices(skin);
+		RwV3dTransformPoints(&boneTable[i], &invmat.pos, 1, &x[parent]);
+		if(HIERNODEINFO(hier)[i].flags & rpHANIMPUSHPARENTMATRIX)
+			stack[++sp] = parent;
+		if(HIERNODEINFO(hier)[i].flags & rpHANIMPOPPARENTMATRIX)
+			parent = stack[sp--];
+		else
+			parent = i;
+
+		//assert(parent >= 0 && parent < numBones);
+	}
+}
+
+RpHAnimAnimation*
+HAnimAnimationCreateForHierarchy(RpHAnimHierarchy *hier)
+{
+	int i;
+#if defined FIX_BUGS || defined LIBRW
+	int numNodes = hier->numNodes*2;	// you're supposed to have at least two KFs per node
+#else
+	int numNodes = hier->numNodes;
+#endif
+	RpHAnimAnimation *anim = RpHAnimAnimationCreate(rpHANIMSTDKEYFRAMETYPEID, numNodes, 0, 0.0f);
+	if(anim == nil)
+		return nil;
+	RpHAnimStdKeyFrame *frame;
+	for(i = 0; i < numNodes; i++){
+		frame = (RpHAnimStdKeyFrame*)HANIMFRAME(anim, i);	// games uses struct size here, not safe
+		frame->q.real = 1.0f;
+		frame->q.imag.x = frame->q.imag.y = frame->q.imag.z = 0.0f;
+		frame->t.x = frame->t.y = frame->t.z = 0.0f;
+#if defined FIX_BUGS || defined LIBRW
+		// times are subtracted and divided giving NaNs
+		// so they can't both be 0
+		frame->time = i/hier->numNodes;
+#else
+		frame->time = 0.0f;
+#endif
+		frame->prevFrame = nil;
+	}
+	return anim;
+}
+
+void
+RenderSkeleton(RpHAnimHierarchy *hier)
+{
+	int i;
+	int sp;
+	int stack[32];
+	int par;
+	CVector p1, p2;
+	int numNodes = hier->numNodes;
+	RwMatrix *mats = RpHAnimHierarchyGetMatrixArray(hier);
+	p1 = mats[0].pos;
+
+	par = 0;
+	sp = 0;
+	stack[sp++] = par;
+	for(i = 1; i < numNodes; i++){
+		p1 = mats[par].pos;
+		p2 = mats[i].pos;
+		CDebug::AddLine(p1, p2, 0xFFFFFFFF, 0xFFFFFFFF);
+		if(HIERNODEINFO(hier)[i].flags & rpHANIMPUSHPARENTMATRIX)
+			stack[sp++] = par;
+		par = i;
+		if(HIERNODEINFO(hier)[i].flags & rpHANIMPOPPARENTMATRIX)
+			par = stack[--sp];
+	}
+}
+
+
+RwBool Im2DRenderQuad(RwReal x1, RwReal y1, RwReal x2, RwReal y2, RwReal z, RwReal recipCamZ, RwReal uvOffset)
+{
+    RwIm2DVertex        vx[4];
+
+    /*
+     *  Render an opaque white 2D quad at the given coordinates and
+     *  spanning a whole texture.
+     */
+
+    RwIm2DVertexSetScreenX(&vx[0], x1);
+    RwIm2DVertexSetScreenY(&vx[0], y1);
+    RwIm2DVertexSetScreenZ(&vx[0], z);
+    RwIm2DVertexSetIntRGBA(&vx[0], 255, 255, 255, 255);
+    RwIm2DVertexSetRecipCameraZ(&vx[0], recipCamZ);
+    RwIm2DVertexSetU(&vx[0], uvOffset, recipCamZ);
+    RwIm2DVertexSetV(&vx[0], uvOffset, recipCamZ);
+
+    RwIm2DVertexSetScreenX(&vx[1], x1);
+    RwIm2DVertexSetScreenY(&vx[1], y2);
+    RwIm2DVertexSetScreenZ(&vx[1], z);
+    RwIm2DVertexSetIntRGBA(&vx[1], 255, 255, 255, 255);
+    RwIm2DVertexSetRecipCameraZ(&vx[1], recipCamZ);
+    RwIm2DVertexSetU(&vx[1], uvOffset, recipCamZ);
+    RwIm2DVertexSetV(&vx[1], 1.0f + uvOffset, recipCamZ);
+
+    RwIm2DVertexSetScreenX(&vx[2], x2);
+    RwIm2DVertexSetScreenY(&vx[2], y1);
+    RwIm2DVertexSetScreenZ(&vx[2], z);
+    RwIm2DVertexSetIntRGBA(&vx[2], 255, 255, 255, 255);
+    RwIm2DVertexSetRecipCameraZ(&vx[2], recipCamZ);
+    RwIm2DVertexSetU(&vx[2], 1.0f + uvOffset, recipCamZ);
+    RwIm2DVertexSetV(&vx[2], uvOffset, recipCamZ);
+
+    RwIm2DVertexSetScreenX(&vx[3], x2);
+    RwIm2DVertexSetScreenY(&vx[3], y2);
+    RwIm2DVertexSetScreenZ(&vx[3], z);
+    RwIm2DVertexSetIntRGBA(&vx[3], 255, 255, 255, 255);
+    RwIm2DVertexSetRecipCameraZ(&vx[3], recipCamZ);
+    RwIm2DVertexSetU(&vx[3], 1.0f + uvOffset, recipCamZ);
+    RwIm2DVertexSetV(&vx[3], 1.0f + uvOffset, recipCamZ);
+
+    RwIm2DRenderPrimitive(rwPRIMTYPETRISTRIP, vx, 4);
+
+    return TRUE;
+}
+
+bool b_cbsUseLTM = true;
+
+RpAtomic *cbsCalcMeanBSphereRadiusCB(RpAtomic *atomic, void *data)
+{
+	RwV3d atomicPos;
+
+	if ( b_cbsUseLTM )
+		RwV3dTransformPoints(&atomicPos, &RpAtomicGetBoundingSphere(atomic)->center, 1, RwFrameGetLTM(RpClumpGetFrame(atomic->clump)));
+	else
+		RwV3dTransformPoints(&atomicPos, &RpAtomicGetBoundingSphere(atomic)->center, 1, RwFrameGetMatrix(RpClumpGetFrame(atomic->clump)));
+
+	RwV3d temp;
+	RwV3dSub(&temp, &atomicPos, &((RwSphere *)data)->center);	
+	RwReal radius = RwV3dLength(&temp) + RpAtomicGetBoundingSphere(atomic)->radius;
+	
+	if ( ((RwSphere *)data)->radius < radius )
+		((RwSphere *)data)->radius = radius;
+
+	return atomic;
+}
+
+RpAtomic *cbsCalcMeanBSphereCenterCB(RpAtomic *atomic, void *data)
+{
+	RwV3d atomicPos;
+
+	if ( b_cbsUseLTM )
+		RwV3dTransformPoints(&atomicPos, &RpAtomicGetBoundingSphere(atomic)->center, 1, RwFrameGetLTM(RpClumpGetFrame(atomic->clump)));
+	else
+		RwV3dTransformPoints(&atomicPos, &RpAtomicGetBoundingSphere(atomic)->center, 1, RwFrameGetMatrix(RpClumpGetFrame(atomic->clump)));
+	
+	RwV3dAdd(&((RwSphere *)data)->center, &((RwSphere *)data)->center, &atomicPos);
+	
+	return atomic;
+}
+
+RpClump *RpClumpGetBoundingSphere(RpClump *clump, RwSphere *sphere, bool useLTM)
+{
+	RwMatrix matrix;
+	RwSphere result = { 0.0f, 0.0f, 0.0f, 0.0f };
+	
+	b_cbsUseLTM = useLTM;
+ 
+	if ( clump == nil || sphere == nil )
+		return nil;
+  
+	sphere->radius = 0.0f;
+	sphere->center.x = 0.0f;
+	sphere->center.y = 0.0f;
+	sphere->center.z = 0.0f;
+    
+	RwInt32 numAtomics = RpClumpGetNumAtomics(clump);
+	if ( numAtomics < 1.0f )
+		return nil;
+	
+	RpClumpForAllAtomics(clump, cbsCalcMeanBSphereCenterCB, &result);
+	
+	RwV3dScale(&result.center, &result.center, 1.0f/numAtomics);
+	
+	RpClumpForAllAtomics(clump, cbsCalcMeanBSphereRadiusCB, &result);
+	
+	if ( b_cbsUseLTM )
+		RwMatrixInvert(&matrix, RwFrameGetLTM(RpClumpGetFrame(clump)));
+	else
+		RwMatrixInvert(&matrix, RwFrameGetMatrix(RpClumpGetFrame(clump)));
+	
+	RwV3dTransformPoints(&result.center, &result.center, 1, &matrix);
+
+	*sphere = result;
+	
+	return clump;
+}
+
+void
+CameraSize(RwCamera * camera, RwRect * rect,
+		   RwReal viewWindow, RwReal aspectRatio)
+{
+	if (camera)
+	{
+		RwVideoMode         videoMode;
+		RwRect              r;
+		RwRect              origSize = { 0, 0, 0, 0 };	// FIX just to make the compier happy
+		RwV2d               vw;
+
+		RwEngineGetVideoModeInfo(&videoMode,
+								 RwEngineGetCurrentVideoMode());
+
+		origSize.w  = RwRasterGetWidth(RwCameraGetRaster(camera));
+		origSize.h = RwRasterGetHeight(RwCameraGetRaster(camera));
+
+		if (!rect)
+		{
+			if (videoMode.flags & rwVIDEOMODEEXCLUSIVE)
+			{
+				/* For full screen applications, resizing the camera just doesn't
+				 * make sense, use the video mode size.
+				 */
+
+				r.x = r.y = 0;
+				r.w = videoMode.width;
+				r.h = videoMode.height;
+				rect = &r;
+			}
+			else
+			{
+				/*
+				rect not specified - reuse current values
+				*/
+				r.w = RwRasterGetWidth(RwCameraGetRaster(camera));
+				r.h = RwRasterGetHeight(RwCameraGetRaster(camera));
+				r.x = r.y = 0;
+				rect = &r;
+			}
+		}
+
+		if (( origSize.w != rect->w ) || ( origSize.h != rect->h ))
+		{
+			RwRaster           *raster;
+			RwRaster           *zRaster;
+
+			// BUG: game just changes camera raster's sizes, but this is a hack
+#if defined FIX_BUGS || defined LIBRW
+			/*
+			 * Destroy rasters...
+			 */
+
+			raster = RwCameraGetRaster(camera);
+			if( raster )
+			{
+				RwRasterDestroy(raster);
+				camera->frameBuffer = nil;
+			}
+
+			zRaster = RwCameraGetZRaster(camera);
+			if( zRaster )
+			{
+				RwRasterDestroy(zRaster);
+				camera->zBuffer = nil;
+			}
+
+			/*
+			 * Create new rasters...
+			 */
+
+			raster = RwRasterCreate(rect->w, rect->h, 0, rwRASTERTYPECAMERA);
+			zRaster = RwRasterCreate(rect->w, rect->h, 0, rwRASTERTYPEZBUFFER);
+
+			if( raster && zRaster )
+			{
+				RwCameraSetRaster(camera, raster);
+				RwCameraSetZRaster(camera, zRaster);
+			}
+			else
+			{
+				if( raster )
+				{
+					RwRasterDestroy(raster);
+				}
+
+				if( zRaster )
+				{
+					RwRasterDestroy(zRaster);
+				}
+
+				rect->x = origSize.x;
+				rect->y = origSize.y;
+				rect->w = origSize.w;
+				rect->h = origSize.h;
+
+				/*
+				 * Use default values...
+				 */
+				raster =
+					RwRasterCreate(rect->w, rect->h, 0, rwRASTERTYPECAMERA);
+
+				zRaster =
+					RwRasterCreate(rect->w, rect->h, 0, rwRASTERTYPEZBUFFER);
+
+				RwCameraSetRaster(camera, raster);
+				RwCameraSetZRaster(camera, zRaster);
+			}
+#else
+			raster = RwCameraGetRaster(camera);
+			zRaster = RwCameraGetZRaster(camera);
+			
+			raster->width = zRaster->width = rect->w;
+			raster->height = zRaster->height = rect->h;
+#endif
+		}
+
+		/* Figure out the view window */
+		if (videoMode.flags & rwVIDEOMODEEXCLUSIVE)
+		{
+			/* derive ratio from aspect ratio */
+			vw.x = viewWindow;
+			vw.y = viewWindow / aspectRatio;
+		}
+		else
+		{
+			/* derive from pixel ratios */
+			if (rect->w > rect->h)
+			{
+				vw.x = viewWindow;
+				vw.y = (rect->h * viewWindow) / rect->w;
+			}
+			else
+			{
+				vw.x = (rect->w * viewWindow) / rect->h;
+				vw.y = viewWindow;
+			}
+		}
+
+		RwCameraSetViewWindow(camera, &vw);
+
+		RsGlobal.width  = rect->w;
+		RsGlobal.height = rect->h;
+	}
+
+	return;
+}
+
+void
+CameraDestroy(RwCamera *camera)
+{
+	RwRaster    *raster, *tmpRaster;
+	RwFrame     *frame;
+
+	if (camera)
+	{
+		frame = RwCameraGetFrame(camera);
+		if (frame)
+		{
+			RwFrameDestroy(frame);
+		}
+
+		raster = RwCameraGetRaster(camera);
+		if (raster)
+		{
+			tmpRaster = RwRasterGetParent(raster);
+
+			RwRasterDestroy(raster);
+
+			if ((tmpRaster != nil) && (tmpRaster != raster))
+			{
+				RwRasterDestroy(tmpRaster);
+			}
+		}
+
+		raster = RwCameraGetZRaster(camera);
+		if (raster)
+		{
+			tmpRaster = RwRasterGetParent(raster);
+
+			RwRasterDestroy(raster);
+
+			if ((tmpRaster != nil) && (tmpRaster != raster))
+			{
+				RwRasterDestroy(tmpRaster);
+			}
+		}
+
+		RwCameraDestroy(camera);
+	}
+
+	return;
+}
+
+RwCamera           *
+CameraCreate(RwInt32 width, RwInt32 height, RwBool zBuffer)
+{
+	RwCamera           *camera;
+
+	camera = RwCameraCreate();
+
+	if (camera)
+	{
+		RwCameraSetFrame(camera, RwFrameCreate());
+		RwCameraSetRaster(camera,
+						  RwRasterCreate(0, 0, 0, rwRASTERTYPECAMERA));
+
+		if (zBuffer)
+		{
+			RwCameraSetZRaster(camera,
+							   RwRasterCreate(0, 0, 0,
+											  rwRASTERTYPEZBUFFER));
+		}
+
+		/* now check that everything is valid */
+		if (RwCameraGetFrame(camera) &&
+			RwCameraGetRaster(camera) &&
+			RwRasterGetParent(RwCameraGetRaster(camera)) &&
+			(!zBuffer || (RwCameraGetZRaster(camera) &&
+						  RwRasterGetParent(RwCameraGetZRaster
+											(camera)))))
+		{
+			/* everything OK */
+			return (camera);
+		}
+	}
+
+	/* if we're here then an error must have occurred so clean up */
+
+	CameraDestroy(camera);
+	return (nil);
+}
+
+#ifdef LIBRW
+#include <rpmatfx.h>
+#include "VehicleModelInfo.h"
+
+int32
+findPlatform(rw::Atomic *a)
+{
+	rw::Geometry *g = a->geometry;
+	if(g->instData)
+		return g->instData->platform;
+	return 0;
+}
+
+// Game doesn't read atomic extensions so we never get any other than the default pipe,
+// but we need it for uninstancing
+void
+attachPipe(rw::Atomic *atomic)
+{
+	if(RpSkinGeometryGetSkin(RpAtomicGetGeometry(atomic)))
+		atomic->pipeline = rw::skinGlobals.pipelines[rw::platform];
+	else{
+		int fx = rpMATFXEFFECTNULL;
+		RpGeometryForAllMaterials(RpAtomicGetGeometry(atomic), CVehicleModelInfo::GetMatFXEffectMaterialCB, &fx);
+		if(fx != rpMATFXEFFECTNULL)
+			RpMatFXAtomicEnableEffects(atomic);
+	}
+}
+
+// Attach pipes for the platform we have native data for so we can uninstance
+void
+switchPipes(rw::Atomic *a, int32 platform)
+{
+	if(a->pipeline && a->pipeline->platform != platform){
+		uint32 plgid = a->pipeline->pluginID;
+		switch(plgid){
+		// assume default pipe won't be attached explicitly
+		case rw::ID_SKIN:
+			a->pipeline = rw::skinGlobals.pipelines[platform];
+			break;
+		case rw::ID_MATFX:
+			a->pipeline = rw::matFXGlobals.pipelines[platform];
+			break;
+		}
+	}
+}
+
+RpAtomic*
+ConvertPlatformAtomic(RpAtomic *atomic, void *data)
+{
+	int32 driver = rw::platform;
+	int32 platform = findPlatform(atomic);
+	if(platform != 0 && platform != driver){
+		attachPipe(atomic);	// kludge
+		rw::ObjPipeline *origPipe = atomic->pipeline;
+		rw::platform = platform;
+		switchPipes(atomic, rw::platform);
+		if(atomic->geometry->flags & rw::Geometry::NATIVE)
+			atomic->uninstance();
+		// no ADC in this game
+		//rw::ps2::unconvertADC(atomic->geometry);
+		rw::platform = driver;
+		atomic->pipeline = origPipe;
+	}
+	return atomic;
+}
+#endif
+
+#if defined(FIX_BUGS) && defined(GTA_PC)
+RwUInt32 saved_alphafunc, saved_alpharef;
+
+void
+SetAlphaTest(RwUInt32 alpharef)
+{
+#ifdef LIBRW
+	saved_alphafunc = rw::GetRenderState(rw::ALPHATESTFUNC);
+	saved_alpharef = rw::GetRenderState(rw::ALPHATESTREF);
+
+	rw::SetRenderState(rw::ALPHATESTFUNC, rw::ALPHAGREATEREQUAL);
+	rw::SetRenderState(rw::ALPHATESTREF, 0);
+#else
+	RwD3D8GetRenderState(D3DRS_ALPHAFUNC, &saved_alphafunc);
+	RwD3D8GetRenderState(D3DRS_ALPHAREF, &saved_alpharef);
+	
+	RwD3D8SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATEREQUAL);
+	RwD3D8SetRenderState(D3DRS_ALPHAREF, alpharef);
+#endif
+}
+
+void
+RestoreAlphaTest()
+{
+#ifdef LIBRW
+	rw::SetRenderState(rw::ALPHATESTFUNC, saved_alphafunc);
+	rw::SetRenderState(rw::ALPHATESTREF, saved_alpharef);
+#else
+	RwD3D8SetRenderState(D3DRS_ALPHAFUNC, saved_alphafunc);
+	RwD3D8SetRenderState(D3DRS_ALPHAREF, saved_alpharef);
+#endif
+}
+#endif