little fix to premakefile

tools/playground/camera.cpp

@@ -0,0 +1,134 @@
+#include <cstdio>
+#include <cassert>
+
+#include <rw.h>
+
+#define PI 3.14159265359f
+#include "camera.h"
+
+using rw::Quat;
+using rw::V3d;
+
+void
+Camera::update(void)
+{
+	if(m_rwcam){
+		m_rwcam->setNearPlane(m_near);
+		m_rwcam->setFarPlane(m_far);
+		m_rwcam->setFOV(m_fov, m_aspectRatio);
+
+		rw::Frame *f = m_rwcam->getFrame();
+		if(f){
+			V3d forward = normalize(sub(m_target, m_position));
+			V3d left = normalize(cross(m_up, forward));
+			V3d nup = cross(forward, left);
+			f->matrix.right = left; // lol
+			f->matrix.up = nup;
+			f->matrix.at = forward;
+			f->matrix.pos = m_position;
+			f->matrix.optimize();
+			f->updateObjects();
+		}
+	}
+}
+
+void
+Camera::setTarget(V3d target)
+{
+	m_position = sub(m_position, sub(m_target, target));
+	m_target = target;
+}
+
+float
+Camera::getHeading(void)
+{
+	V3d dir = sub(m_target, m_position);
+	float a = atan2(dir.y, dir.x)-PI/2.0f;
+	return m_localup.z < 0.0f ? a-PI : a;
+}
+
+void
+Camera::turn(float yaw, float pitch)
+{
+	V3d dir = sub(m_target, m_position);
+	Quat r = Quat::rotation(yaw, rw::makeV3d(0.0f, 0.0f, 1.0f));
+	dir = rotate(dir, r);
+	m_localup = rotate(m_localup, r);
+
+	V3d right = normalize(cross(dir, m_localup));
+	r = Quat::rotation(pitch, right);
+	dir = rotate(dir, r);
+	m_localup = normalize(cross(right, dir));
+	if(m_localup.z >= 0.0) m_up.z = 1.0;
+	else m_up.z = -1.0f;
+
+	m_target = add(m_position, dir);
+}
+
+void
+Camera::orbit(float yaw, float pitch)
+{
+	V3d dir = sub(m_target, m_position);
+	Quat r = Quat::rotation(yaw, rw::makeV3d(0.0f, 0.0f, 1.0f));
+	dir = rotate(dir, r);
+	m_localup = rotate(m_localup, r);
+
+	V3d right = normalize(cross(dir, m_localup));
+	r = Quat::rotation(-pitch, right);
+	dir = rotate(dir, r);
+	m_localup = normalize(cross(right, dir));
+	if(m_localup.z >= 0.0) m_up.z = 1.0;
+	else m_up.z = -1.0f;
+
+	m_position = sub(m_target, dir);
+}
+
+void
+Camera::dolly(float dist)
+{
+	V3d dir = setlength(sub(m_target, m_position), dist);
+	m_position = add(m_position, dir);
+	m_target = add(m_target, dir);
+}
+
+void
+Camera::zoom(float dist)
+{
+	V3d dir = sub(m_target, m_position);
+	float curdist = length(dir);
+	if(dist >= curdist)
+		dist = curdist-0.01f;
+	dir = setlength(dir, dist);
+	m_position = add(m_position, dir);
+}
+
+void
+Camera::pan(float x, float y)
+{
+	V3d dir = normalize(sub(m_target, m_position));
+	V3d right = normalize(cross(dir, m_up));
+	V3d localup = normalize(cross(right, dir));
+	dir = add(scale(right, x), scale(localup, y));
+	m_position = add(m_position, dir);
+	m_target = add(m_target, dir);
+}
+
+float
+Camera::distanceTo(V3d v)
+{
+	return length(sub(m_position, v));
+}
+
+Camera::Camera()
+{
+	m_position.set(0.0f, 6.0f, 0.0f);
+	m_target.set(0.0f, 0.0f, 0.0f);
+	m_up.set(0.0f, 0.0f, 1.0f);
+	m_localup = m_up;
+	m_fov = 70.0f;
+	m_aspectRatio = 1.0f;
+	m_near = 0.1f;
+	m_far = 100.0f;
+	m_rwcam = NULL;
+}
+

tools/playground/camera.h

@@ -0,0 +1,26 @@
+class Camera
+{
+public:
+	rw::Camera *m_rwcam;
+	rw::V3d m_position;
+	rw::V3d m_target;
+	rw::V3d m_up;
+	rw::V3d m_localup;
+
+	float m_fov, m_aspectRatio;
+	float m_near, m_far;
+
+
+	void setTarget(rw::V3d target);
+	float getHeading(void);
+
+	void turn(float yaw, float pitch);
+	void orbit(float yaw, float pitch);
+	void dolly(float dist);
+	void zoom(float dist);
+	void pan(float x, float y);
+
+	void update(void);
+	float distanceTo(rw::V3d v);
+	Camera(void);
+};

tools/playground/font.cpp

@@ -0,0 +1,181 @@
+#include <rw.h>
+#include <skeleton.h>
+
+using namespace rw;
+
+struct Font
+{
+	Texture *tex;
+	int32 glyphwidth, glyphheight;
+	int32 numglyphs;
+};
+Font vga = { nil, 8, 16, 256 };
+Font bios = { nil, 8, 8, 256 };
+Font *curfont = &bios;
+
+#define NUMCHARS 100
+uint16 indices[NUMCHARS*6];
+RWDEVICE::Im2DVertex vertices[NUMCHARS*4];
+int32 curVert;
+int32 curIndex;
+
+void
+printScreen(const char *s, float32 x, float32 y)
+{
+	char c;
+	Camera *cam;
+	RWDEVICE::Im2DVertex *vert;
+	uint16 *ix;
+	curVert = 0;
+	curIndex = 0;
+	float32 u, v, du, dv;
+	float recipZ;
+
+	cam = (Camera*)engine->currentCamera;
+	vert = &vertices[curVert];
+	ix = &indices[curIndex];
+	du = curfont->glyphwidth/(float32)curfont->tex->raster->width;
+	dv = curfont->glyphheight/(float32)curfont->tex->raster->height;
+	recipZ = 1.0f/cam->nearPlane;
+	while(c = *s){
+		if(c >= curfont->numglyphs)
+			c = 0;
+		u = (c % 16)*curfont->glyphwidth / (float32)curfont->tex->raster->width;
+		v = (c / 16)*curfont->glyphheight / (float32)curfont->tex->raster->height;
+
+		vert->setScreenX(x);
+		vert->setScreenY(y);
+		vert->setScreenZ(rw::im2d::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(recipZ);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u, recipZ);
+		vert->setV(v, recipZ);
+		vert++;
+
+		vert->setScreenX(x+curfont->glyphwidth);
+		vert->setScreenY(y);
+		vert->setScreenZ(rw::im2d::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(recipZ);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u+du, recipZ);
+		vert->setV(v, recipZ);
+		vert++;
+		
+		vert->setScreenX(x);
+		vert->setScreenY(y+curfont->glyphheight);
+		vert->setScreenZ(rw::im2d::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(recipZ);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u, recipZ);
+		vert->setV(v+dv, recipZ);
+		vert++;
+
+		vert->setScreenX(x+curfont->glyphwidth);
+		vert->setScreenY(y+curfont->glyphheight);
+		vert->setScreenZ(rw::im2d::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(recipZ);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u+du, recipZ);
+		vert->setV(v+dv, recipZ);
+		vert++;
+
+		*ix++ = curVert;
+		*ix++ = curVert+1;
+		*ix++ = curVert+2;
+		*ix++ = curVert+2;
+		*ix++ = curVert+1;
+		*ix++ = curVert+3;
+
+		curVert += 4;
+		curIndex += 6;
+		x += curfont->glyphwidth+1;
+		
+		s++;
+	}
+
+	rw::SetRenderStatePtr(rw::TEXTURERASTER, curfont->tex->raster);
+	rw::SetRenderState(rw::TEXTUREADDRESS, rw::Texture::WRAP);
+	rw::SetRenderState(rw::TEXTUREFILTER, rw::Texture::NEAREST);
+
+	im2d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST,
+		vertices, curVert, indices, curIndex);
+
+}
+
+void
+initFont(void)
+{
+	vga.tex = Texture::read("Bm437_IBM_VGA8", "");
+	bios.tex = Texture::read("Bm437_IBM_BIOS", "");
+
+/*
+	FILE *foo = fopen("font.c", "w");
+	assert(foo);
+	int x, y;
+	rw::Image *img = rw::readTGA("vga_font.tga");
+	assert(img);
+	for(y = 0; y < img->height; y++){
+		for(x = 0; x < img->width; x++)
+			fprintf(foo, "%d, ", !!img->pixels[y*img->width + x]);
+		fprintf(foo, "\n");
+	}
+*/
+}
+
+/*
+#define NUMGLYPHS 256
+#define GLYPHWIDTH 8
+#define GLYPHHEIGHT 16
+
+
+void
+convertFont(void)
+{
+	FILE *f;
+	Image *img;
+	uint8 data[NUMGLYPHS*GLYPHHEIGHT];
+	int32 i, x, y;
+	uint8 *px, *line, *glyph;
+//	f = fopen("font0.bin", "rb");
+	f = fopen("Bm437_IBM_VGA8.FON", "rb");
+//	f = fopen("Bm437_IBM_BIOS.FON", "rb");
+	if(f == nil)
+		return;
+fseek(f, 0x65A, 0);
+	fread(data, 1, NUMGLYPHS*GLYPHHEIGHT, f);
+	fclose(f);
+
+	img = Image::create(16*GLYPHWIDTH, NUMGLYPHS/16*GLYPHHEIGHT, 32);
+	img->allocate();
+	for(i = 0; i < NUMGLYPHS; i++){
+		glyph = &data[i*GLYPHHEIGHT];
+		x = (i % 16)*GLYPHWIDTH;
+		y = (i / 16)*GLYPHHEIGHT;
+		line = &img->pixels[x*4 + y*img->stride];
+		for(y = 0; y < GLYPHHEIGHT; y++){
+			px = line;
+			for(x = 0; x < 8; x++){
+				if(*glyph & 1<<(8-x)){
+					*px++ = 255;
+					*px++ = 255;
+					*px++ = 255;
+					*px++ = 255;
+				}else{
+					*px++ = 0;
+					*px++ = 0;
+					*px++ = 0;
+					*px++ = 0;
+				}
+			}
+			glyph++;
+			line += img->stride;
+		}
+	}
+//	writeTGA(img, "Bm437_IBM_BIOS.tga");
+	writeTGA(img, "Bm437_IBM_VGA8.tga");
+}
+*/

tools/playground/main.cpp

@@ -0,0 +1,520 @@
+#include <rw.h>
+#include <skeleton.h>
+#include "camera.h"
+#include <assert.h>
+
+rw::V3d zero = { 0.0f, 0.0f, 0.0f };
+Camera *camera;
+struct SceneGlobals {
+	rw::World *world;
+	rw::Camera *camera;
+	rw::Clump *clump;
+} Scene;
+rw::Texture *tex, *tex2;
+rw::Raster *testras;
+rw::EngineOpenParams engineOpenParams;
+
+rw::Texture *frontbuffer;
+
+bool dosoftras = 0;
+
+namespace gen {
+void tlTest(rw::Clump *clump);
+}
+void genIm3DTransform(void *vertices, rw::int32 numVertices, rw::Matrix *xform);
+void genIm3DRenderIndexed(rw::PrimitiveType prim, void *indices, rw::int32 numIndices);
+void genIm3DEnd(void);
+void initFont(void);
+void printScreen(const char *s, float x, float y);
+
+rw::Charset *testfont;
+
+//#include <Windows.h>
+
+void
+Init(void)
+{
+//	AllocConsole();
+//	freopen("CONIN$", "r", stdin);
+//	freopen("CONOUT$", "w", stdout);
+//	freopen("CONOUT$", "w", stderr);
+
+	sk::globals.windowtitle = "Clump viewer";
+	sk::globals.width = 640;
+	sk::globals.height = 448;
+	sk::globals.quit = 0;
+}
+
+bool
+attachPlugins(void)
+{
+	rw::ps2::registerPDSPlugin(40);
+	rw::ps2::registerPluginPDSPipes();
+
+	rw::registerMeshPlugin();
+	rw::registerNativeDataPlugin();
+	rw::registerAtomicRightsPlugin();
+	rw::registerMaterialRightsPlugin();
+	rw::xbox::registerVertexFormatPlugin();
+	rw::registerSkinPlugin();
+	rw::registerUserDataPlugin();
+	rw::registerHAnimPlugin();
+	rw::registerMatFXPlugin();
+	rw::registerUVAnimPlugin();
+	rw::ps2::registerADCPlugin();
+	return true;
+}
+
+void
+dumpUserData(rw::UserDataArray *ar)
+{
+	int i;
+	printf("name: %s\n", ar->name);
+	for(i = 0; i < ar->numElements; i++){
+		switch(ar->datatype){
+		case rw::USERDATAINT:
+			printf("	%d\n", ar->getInt(i));
+			break;
+		case rw::USERDATAFLOAT:
+			printf("	%f\n", ar->getFloat(i));
+			break;
+		case rw::USERDATASTRING:
+			printf("	%s\n", ar->getString(i));
+			break;
+		}
+	}
+}
+
+static rw::Frame*
+dumpFrameUserDataCB(rw::Frame *f, void*)
+{
+	using namespace rw;
+	int32 i;
+	UserDataArray *ar;
+	int32 n = UserDataArray::frameGetCount(f);
+	for(i = 0; i < n; i++){
+		ar = UserDataArray::frameGet(f, i);
+		dumpUserData(ar);
+	}
+	f->forAllChildren(dumpFrameUserDataCB, nil);
+	return f;
+}
+
+void
+dumpUserData(rw::Clump *clump)
+{
+	printf("Frames\n");
+	dumpFrameUserDataCB(clump->getFrame(), nil);
+}
+
+static rw::Frame*
+getHierCB(rw::Frame *f, void *data)
+{
+	using namespace rw;
+	HAnimData *hd = rw::HAnimData::get(f);
+	if(hd->hierarchy){
+		*(HAnimHierarchy**)data = hd->hierarchy;
+		return nil;
+	}
+	f->forAllChildren(getHierCB, data);
+	return f;
+}
+
+rw::HAnimHierarchy*
+getHAnimHierarchyFromClump(rw::Clump *clump)
+{
+	using namespace rw;
+	HAnimHierarchy *hier = nil;
+	getHierCB(clump->getFrame(), &hier);
+	return hier;
+}
+
+void
+setupAtomic(rw::Atomic *atomic)
+{
+	using namespace rw;
+	// just remove pipelines that we can't handle for now
+//	if(atomic->pipeline && atomic->pipeline->platform != rw::platform)
+		atomic->pipeline = NULL;
+
+	// Attach hierarchy to atomic if we're skinned
+	HAnimHierarchy *hier = getHAnimHierarchyFromClump(atomic->clump);
+	if(hier)
+		Skin::setHierarchy(atomic, hier);
+}
+
+static void
+initHierFromFrames(rw::HAnimHierarchy *hier)
+{
+	using namespace rw;
+	int32 i;
+	for(i = 0; i < hier->numNodes; i++){
+		if(hier->nodeInfo[i].frame){
+			hier->matrices[hier->nodeInfo[i].index] = *hier->nodeInfo[i].frame->getLTM();
+		}else
+			assert(0);
+	}
+}
+
+void
+setupClump(rw::Clump *clump)
+{
+	using namespace rw;
+	HAnimHierarchy *hier = getHAnimHierarchyFromClump(clump);
+	if(hier){
+		hier->attach();
+		initHierFromFrames(hier);
+	}
+
+	FORLIST(lnk, clump->atomics){
+		rw::Atomic *a = rw::Atomic::fromClump(lnk);
+		setupAtomic(a);
+	}
+}
+
+bool
+InitRW(void)
+{
+//	rw::platform = rw::PLATFORM_D3D8;
+	if(!sk::InitRW())
+		return false;
+
+	rw::d3d::isP8supported = false;
+
+	initFont();
+
+	rw::RGBA foreground = { 255, 255, 0, 255 };
+	rw::RGBA background = { 0, 0, 0, 0 };
+	rw::Charset::open();
+	testfont = rw::Charset::create(&foreground, &background);
+	assert(testfont);
+	foreground.blue = 255.0f;
+	testfont->setColors(&foreground, &background);
+
+	tex = rw::Texture::read("maze", nil);
+	tex2 = rw::Texture::read("checkers", nil);
+
+	const char *filename = "teapot2.dff";
+	if(sk::args.argc > 1)
+		filename = sk::args.argv[1];
+	rw::StreamFile in;
+	if(in.open(filename, "rb") == NULL){
+		printf("couldn't open file\n");
+		return false;
+	}
+	rw::findChunk(&in, rw::ID_CLUMP, NULL, NULL);
+	Scene.clump = rw::Clump::streamRead(&in);
+	assert(Scene.clump);
+	in.close();
+
+	// TEST - Set texture to the all materials of the clump
+//	FORLIST(lnk, Scene.clump->atomics){
+//		rw::Atomic *a = rw::Atomic::fromClump(lnk);
+//		for(int i = 0; i < a->geometry->matList.numMaterials; i++)
+//			a->geometry->matList.materials[i]->setTexture(tex);
+//	}
+
+	Scene.clump->getFrame()->translate(&zero, rw::COMBINEREPLACE);
+
+	dumpUserData(Scene.clump);
+	setupClump(Scene.clump);
+
+	Scene.world = rw::World::create();
+
+	rw::Light *ambient = rw::Light::create(rw::Light::AMBIENT);
+	ambient->setColor(0.3f, 0.3f, 0.3f);
+	Scene.world->addLight(ambient);
+
+	rw::V3d xaxis = { 1.0f, 0.0f, 0.0f };
+	rw::Light *direct = rw::Light::create(rw::Light::DIRECTIONAL);
+	direct->setColor(0.8f, 0.8f, 0.8f);
+	direct->setFrame(rw::Frame::create());
+	direct->getFrame()->rotate(&xaxis, 180.0f, rw::COMBINEREPLACE);
+	Scene.world->addLight(direct);
+
+	camera = new Camera;
+	Scene.camera = sk::CameraCreate(sk::globals.width, sk::globals.height, 1);
+	camera->m_rwcam = Scene.camera;
+	camera->m_aspectRatio = 640.0f/448.0f;
+	camera->m_near = 5.0f;
+//	camera->m_far = 450.0f;
+	camera->m_far = 15.0f;
+	camera->m_target.set(0.0f, 0.0f, 0.0f);
+	camera->m_position.set(0.0f, -10.0f, 0.0f);
+//	camera->setPosition(Vec3(0.0f, 5.0f, 0.0f));
+//	camera->setPosition(Vec3(0.0f, -70.0f, 0.0f));
+//	camera->setPosition(Vec3(0.0f, -1.0f, 3.0f));
+	camera->update();
+
+	Scene.world->addCamera(camera->m_rwcam);
+
+	return true;
+}
+
+void
+im2dtest(void)
+{
+	using namespace rw::RWDEVICE;
+	int i;
+	static struct
+	{
+		float x, y;
+		rw::uint8 r, g, b, a;
+		float u, v;
+	} vs[4] = {
+		{   0.0f,   0.0f,   255, 0, 0, 128,    0.0f, 0.0f },
+		{ 640.0f,   0.0f,   0, 255, 0, 128,    1.0f, 0.0f },
+		{   0.0f, 448.0f,   0, 0, 255, 128,    0.0f, 1.0f },
+		{ 640.0f, 448.0f,   0, 255, 255, 128,  1.0f, 1.0f },
+/*
+		{   0.0f,   0.0f,   255, 0, 0, 128,    0.0f, 1.0f },
+		{ 640.0f,   0.0f,   0, 255, 0, 128,    0.0f, 0.0f },
+		{   0.0f, 448.0f,   0, 0, 255, 128,    1.0f, 1.0f },
+		{ 640.0f, 448.0f,   0, 255, 255, 128,  1.0f, 0.0f },
+*/
+	};
+	Im2DVertex verts[4];
+	static short indices[] = {
+		0, 1, 2, 3
+	};
+
+	float recipZ = 1.0f/Scene.camera->nearPlane;
+	for(i = 0; i < 4; i++){
+		verts[i].setScreenX(vs[i].x);
+		verts[i].setScreenY(vs[i].y);
+		verts[i].setScreenZ(rw::im2d::GetNearZ());
+		verts[i].setCameraZ(Scene.camera->nearPlane);
+		verts[i].setRecipCameraZ(recipZ);
+		verts[i].setColor(vs[i].r, vs[i].g, vs[i].b, vs[i].a);
+		if(dosoftras)
+			verts[i].setColor(255, 255, 255, 255);
+		verts[i].setU(vs[i].u + 0.5f/640.0f, recipZ);
+		verts[i].setV(vs[i].v + 0.5f/448.0f, recipZ);
+	}
+
+	rw::SetRenderStatePtr(rw::TEXTURERASTER, tex->raster);
+	if(dosoftras)
+		rw::SetRenderStatePtr(rw::TEXTURERASTER, testras);
+	rw::SetRenderState(rw::TEXTUREADDRESS, rw::Texture::WRAP);
+	rw::SetRenderState(rw::TEXTUREFILTER, rw::Texture::NEAREST);
+	rw::SetRenderState(rw::VERTEXALPHA, 1);
+	rw::im2d::RenderIndexedPrimitive(rw::PRIMTYPETRISTRIP,
+		&verts, 4, &indices, 4);
+}
+
+void
+im3dtest(void)
+{
+	using namespace rw::RWDEVICE;
+	int i;
+	static struct
+	{
+		float x, y, z;
+		rw::uint8 r, g, b, a;
+		float u, v;
+	} vs[8] = {
+		{ -1.0f, -1.0f, -1.0f,   255, 0, 0, 128,    0.0f, 0.0f },
+		{ -1.0f,  1.0f, -1.0f,   0, 255, 0, 128,    0.0f, 1.0f },
+		{  1.0f, -1.0f, -1.0f,   0, 0, 255, 128,    1.0f, 0.0f },
+		{  1.0f,  1.0f, -1.0f,   255, 0, 255, 128,  1.0f, 1.0f },
+
+		{ -1.0f, -1.0f,  1.0f,   255, 0, 0, 128,    0.0f, 0.0f },
+		{ -1.0f,  1.0f,  1.0f,   0, 255, 0, 128,    0.0f, 1.0f },
+		{  1.0f, -1.0f,  1.0f,   0, 0, 255, 128,    1.0f, 0.0f },
+		{  1.0f,  1.0f,  1.0f,   255, 0, 255, 128,  1.0f, 1.0f },
+	};
+	Im3DVertex verts[8];
+	static short indices[2*6] = {
+		0, 1, 2, 2, 1, 3,
+		4, 5, 6, 6, 5, 7
+	};
+
+	for(i = 0; i < 8; i++){
+		verts[i].setX(vs[i].x);
+		verts[i].setY(vs[i].y);
+		verts[i].setZ(vs[i].z);
+		verts[i].setColor(vs[i].r, vs[i].g, vs[i].b, vs[i].a);
+		verts[i].setU(vs[i].u);
+		verts[i].setV(vs[i].v);
+	}
+
+//	rw::SetRenderStatePtr(rw::TEXTURERASTER, tex->raster);
+	rw::SetRenderStatePtr(rw::TEXTURERASTER, testfont->raster);
+//	rw::SetRenderStatePtr(rw::TEXTURERASTER, frontbuffer->raster);
+	rw::SetRenderState(rw::TEXTUREADDRESS, rw::Texture::WRAP);
+	rw::SetRenderState(rw::TEXTUREFILTER, rw::Texture::NEAREST);
+
+/*
+	genIm3DTransform(verts, 8, nil);
+	genIm3DRenderIndexed(rw::PRIMTYPETRILIST, indices, 12);
+	genIm3DEnd();
+*/
+	rw::im3d::Transform(verts, 8, nil);
+	rw::im3d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST, indices, 12);
+	rw::im3d::End();
+}
+
+void
+getFrontBuffer(void)
+{
+	rw::Raster *fb = Scene.camera->frameBuffer;
+
+	if(frontbuffer == nil || fb->width > frontbuffer->raster->width || fb->height > frontbuffer->raster->height){
+		int w, h;
+		for(w = 1; w < fb->width; w <<= 1);
+		for(h = 1; h < fb->height; h <<= 1);
+		rw::Raster *ras = rw::Raster::create(w, h, fb->depth,  rw::Raster::CAMERATEXTURE);
+		if(frontbuffer){
+			frontbuffer->raster->destroy();
+			frontbuffer->raster = ras;
+		}else
+			frontbuffer = rw::Texture::create(ras);
+		printf("created FB with %d %d %d\n", ras->width, ras->height, ras->depth);
+	}
+
+	rw::Raster::pushContext(frontbuffer->raster);
+	fb->renderFast(0, 0);
+	rw::Raster::popContext();
+}
+
+void
+Draw(float timeDelta)
+{
+	getFrontBuffer();
+
+	static rw::RGBA clearcol = { 0x60, 0x60, 0x60, 0xFF };
+	camera->m_rwcam->clear(&clearcol, rw::Camera::CLEARIMAGE|rw::Camera::CLEARZ);
+	camera->update();
+	camera->m_rwcam->beginUpdate();
+
+extern void beginSoftras(void);
+	beginSoftras();
+
+//	gen::tlTest(Scene.clump);
+void drawtest(void);
+//	drawtest();
+
+extern void endSoftras(void);
+	if(dosoftras){
+		endSoftras();
+	}
+	//	im2dtest();
+
+//	Scene.clump->render();
+	im3dtest();
+//	printScreen("Hello, World!", 10, 10);
+
+	testfont->print("foo ABC", 200, 200, true);
+
+	camera->m_rwcam->endUpdate();
+
+	camera->m_rwcam->showRaster();
+}
+
+
+void
+KeyUp(int key)
+{
+}
+
+void
+KeyDown(int key)
+{
+	switch(key){
+	case 'W':
+		camera->orbit(0.0f, 0.1f);
+		break;
+	case 'S':
+		camera->orbit(0.0f, -0.1f);
+		break;
+	case 'A':
+		camera->orbit(-0.1f, 0.0f);
+		break;
+	case 'D':
+		camera->orbit(0.1f, 0.0f);
+		break;
+	case sk::KEY_UP:
+		camera->turn(0.0f, 0.1f);
+		break;
+	case sk::KEY_DOWN:
+		camera->turn(0.0f, -0.1f);
+		break;
+	case sk::KEY_LEFT:
+		camera->turn(0.1f, 0.0f);
+		break;
+	case sk::KEY_RIGHT:
+		camera->turn(-0.1f, 0.0f);
+		break;
+	case 'R':
+		camera->zoom(0.1f);
+		break;
+	case 'F':
+		camera->zoom(-0.1f);
+		break;
+	case 'V':
+		dosoftras = !dosoftras;
+		break;
+	case sk::KEY_ESC:
+		sk::globals.quit = 1;
+		break;
+	}
+}
+
+void
+MouseMove(int x, int y)
+{
+}
+
+void
+MouseButton(int buttons)
+{
+}
+
+sk::EventStatus
+AppEventHandler(sk::Event e, void *param)
+{
+	using namespace sk;
+	Rect *r;
+	MouseState *ms;
+
+	switch(e){
+	case INITIALIZE:
+		Init();
+		return EVENTPROCESSED;
+	case RWINITIALIZE:
+		return ::InitRW() ? EVENTPROCESSED : EVENTERROR;
+	case PLUGINATTACH:
+		return attachPlugins() ? EVENTPROCESSED : EVENTERROR;
+	case KEYDOWN:
+		KeyDown(*(int*)param);
+		return EVENTPROCESSED;
+	case KEYUP:
+		KeyUp(*(int*)param);
+		return EVENTPROCESSED;
+	case MOUSEBTN:
+		ms = (MouseState*)param;
+		MouseButton(ms->buttons);
+		return EVENTPROCESSED;
+	case MOUSEMOVE:
+		ms = (MouseState*)param;
+		MouseMove(ms->posx, ms->posy);
+		return EVENTPROCESSED;
+	case RESIZE:
+		r = (Rect*)param;
+		// TODO: register when we're minimized
+		if(r->w == 0) r->w = 1;
+		if(r->h == 0) r->h = 1;
+
+		sk::globals.width = r->w;
+		sk::globals.height = r->h;
+		if(camera)
+			camera->m_aspectRatio = (float)r->w/r->h;
+		if(Scene.camera)
+			sk::CameraSize(Scene.camera, r);
+		break;
+	case IDLE:
+		Draw(*(float*)param);
+		return EVENTPROCESSED;
+	}
+	return sk::EVENTNOTPROCESSED;
+}

tools/playground/ras_test.cpp

@@ -0,0 +1,902 @@
+#include <rw.h>
+#include <skeleton.h>
+
+namespace rs {
+
+typedef int8_t i8;
+typedef uint8_t u8;
+typedef int16_t i16;
+typedef uint16_t u16;
+typedef int32_t i32;
+typedef uint32_t u32;
+typedef int64_t i64;
+typedef uint64_t u64;
+
+typedef struct Canvas Canvas;
+struct Canvas
+{
+	u8 *fb;
+	u32 *zbuf;
+	int w, h;
+};
+extern Canvas *canvas;
+
+typedef struct Texture Texture;
+struct Texture          
+{                       
+	u8 *pixels;
+	int w, h;
+	int wrap;
+};              
+
+typedef struct Point3 Point3;
+struct Point3
+{
+	int x, y, z;
+};
+
+typedef struct Color Color;
+struct Color
+{
+	u8 r, g, b, a;
+};
+
+typedef struct Vertex Vertex;
+struct Vertex
+{
+	i32 x, y, z;
+	float q;	// 1/z
+	u8 r, g, b, a;
+	u8 f;		// fog
+	float s, t;
+};
+
+Canvas *makecanvas(int w, int h);
+Texture *maketexture(int w, int h);
+void putpixel(Canvas *canvas, Point3 p, Color c);
+void clearcanvas(Canvas *canvas);
+void drawTriangle(Canvas *canvas, Vertex p1, Vertex p2, Vertex p3);
+
+// not good
+void drawRect(Canvas *canvas, Point3 p1, Point3 p2, Color c);
+void drawLine(Canvas *canvas, Point3 p1, Point3 p2, Color c);
+
+//#define trace(...) printf(__VA_ARGS__)
+#define trace(...)
+
+
+int clamp(int x);
+
+
+/*
+ * Render States
+ */
+enum TextureWrap {
+	WRAP_REPEAT,
+	WRAP_CLAMP,
+	WRAP_BORDER,
+};
+
+enum TextureFunction {
+	TFUNC_MODULATE,
+	TFUNC_DECAL,
+	TFUNC_HIGHLIGHT,
+	TFUNC_HIGHLIGHT2,
+};
+
+enum AlphaTestFunc {
+	ALPHATEST_NEVER,
+	ALPHATEST_ALWAYS,
+	ALPHATEST_LESS,
+	ALPHATEST_LEQUAL,
+	ALPHATEST_EQUAL,
+	ALPHATEST_GEQUAL,
+	ALPHATEST_GREATER,
+	ALPHATEST_NOTEQUAL,
+};
+
+enum AlphaTestFail {
+	ALPHAFAIL_KEEP,
+	ALPHAFAIL_FB_ONLY,
+	ALPHAFAIL_ZB_ONLY,
+};
+
+enum DepthTestFunc {
+	DEPTHTEST_NEVER,
+	DEPTHTEST_ALWAYS,
+	DEPTHTEST_GEQUAL,
+	DEPTHTEST_GREATER,
+};
+
+// The blend equation is
+// out = ((A - B) * C >> 7) + D
+// A, B and D select the color, C the alpha value
+enum AlphaBlendOp {
+	ALPHABLEND_SRC,
+	ALPHABLEND_DST,
+	ALPHABLEND_ZERO,
+	ALPHABLEND_FIX = ALPHABLEND_ZERO,
+};
+
+extern int srScissorX0, srScissorX1;
+extern int srScissorY0, srScissorY1;
+extern int srDepthTestEnable;
+extern int srDepthTestFunction;
+extern int srWriteZ;
+extern int srAlphaTestEnable;
+extern int srAlphaTestFunction;
+extern int srAlphaTestReference;
+extern int srAlphaTestFail;
+extern int srAlphaBlendEnable;
+extern int srAlphaBlendA;
+extern int srAlphaBlendB;
+extern int srAlphaBlendC;
+extern int srAlphaBlendD;
+extern int srAlphaBlendFix;
+extern int srTexEnable;
+extern Texture *srTexture;
+extern int srWrapU;
+extern int srWrapV;
+extern Color srBorder;
+extern int srTexUseAlpha;
+extern int srTexFunc;
+extern int srFogEnable;
+extern Color srFogCol;
+
+
+
+// end header
+
+
+
+
+#define CEIL(p) (((p)+15) >> 4)
+
+// render states
+int srScissorX0, srScissorX1;
+int srScissorY0, srScissorY1;
+int srDepthTestEnable = 1;
+int srDepthTestFunction = DEPTHTEST_GEQUAL;
+int srWriteZ = 1;
+int srAlphaTestEnable = 1;
+int srAlphaTestFunction = ALPHATEST_ALWAYS;
+int srAlphaTestReference;
+int srAlphaTestFail = ALPHAFAIL_FB_ONLY;
+int srAlphaBlendEnable = 1;
+int srAlphaBlendA = ALPHABLEND_SRC;
+int srAlphaBlendB = ALPHABLEND_DST;
+int srAlphaBlendC = ALPHABLEND_SRC;
+int srAlphaBlendD = ALPHABLEND_DST;
+int srAlphaBlendFix = 0x80;
+int srTexEnable = 0;
+Texture *srTexture;
+int srWrapU = WRAP_REPEAT;
+int srWrapV = WRAP_REPEAT;
+Color srBorder = { 255, 0, 0, 255 };
+int srTexUseAlpha = 1;
+int srTexFunc = TFUNC_MODULATE;
+int srFogEnable = 0;
+Color srFogCol = { 0, 0, 0, 0 };
+
+int clamp(int x) { if(x < 0) return 0; if(x > 255) return 255; return x; }
+
+Canvas*
+makecanvas(int w, int h)
+{
+	Canvas *canv;
+	canv = (Canvas*)malloc(sizeof(*canv) + w*h*(4+4));
+	canv->w = w;
+	canv->h = h;
+	canv->fb = ((u8*)canv + sizeof(*canv));
+	canv->zbuf = (u32*)(canv->fb + w*h*4);
+	return canv;
+}
+
+Texture*
+maketexture(int w, int h)
+{
+	Texture *t;
+	t = (Texture*)malloc(sizeof(*t) + w*h*4);
+	t->w = w;
+	t->h = h;
+	t->pixels = (u8*)t + sizeof(*t);
+	t->wrap = 0x11; // wrap u and v
+	return t;
+}
+
+void
+clearcanvas(Canvas *canvas)
+{
+	memset(canvas->fb, 0, canvas->w*canvas->h*4);
+	memset(canvas->zbuf, 0, canvas->w*canvas->h*4);
+}
+
+void
+writefb(Canvas *canvas, int x, int y, Color c)
+{
+	u8 *px = &canvas->fb[(y*canvas->w + x)*4];
+	u32 *z = &canvas->zbuf[y*canvas->w + x];
+
+	px[3] = c.r;
+	px[2] = c.g;
+	px[1] = c.b;
+	px[0] = c.a;
+}
+
+void
+putpixel(Canvas *canvas, Point3 p, Color c)
+{
+	// scissor test
+	if(p.x < srScissorX0 || p.x > srScissorX1 ||
+	   p.y < srScissorY0 || p.y > srScissorY1)
+		return;
+
+	u8 *px = &canvas->fb[(p.y*canvas->w + p.x)*4];
+	u32 *z = &canvas->zbuf[p.y*canvas->w + p.x];
+
+	int fbwrite = 1;
+	int zbwrite = srWriteZ;
+
+	// alpha test
+	if(srAlphaTestEnable){
+		int fail;
+		switch(srAlphaTestFunction){
+		case ALPHATEST_NEVER:
+			fail = 1;
+			break;
+		case ALPHATEST_ALWAYS:
+			fail = 0;
+			break;
+		case ALPHATEST_LESS:
+			fail = c.a >= srAlphaTestReference;
+			break;
+		case ALPHATEST_LEQUAL:
+			fail = c.a > srAlphaTestReference;
+			break;
+		case ALPHATEST_EQUAL:
+			fail = c.a != srAlphaTestReference;
+			break;
+		case ALPHATEST_GEQUAL:
+			fail = c.a < srAlphaTestReference;
+			break;
+		case ALPHATEST_GREATER:
+			fail = c.a <= srAlphaTestReference;
+			break;
+		case ALPHATEST_NOTEQUAL:
+			fail = c.a == srAlphaTestReference;
+			break;
+		}
+		if(fail){
+			switch(srAlphaTestFail){
+			case ALPHAFAIL_KEEP:
+				return;
+			case ALPHAFAIL_FB_ONLY:
+				zbwrite = 0;
+				break;
+			case ALPHAFAIL_ZB_ONLY:
+				fbwrite = 0;
+			}
+		}
+	}
+
+	// ztest
+	if(srDepthTestEnable){
+		switch(srDepthTestFunction){
+		case DEPTHTEST_NEVER:
+			return;
+		case DEPTHTEST_ALWAYS:
+			break;
+		case DEPTHTEST_GEQUAL:
+			if((u32)p.z < *z)
+				return;
+			break;
+		case DEPTHTEST_GREATER:
+			if((u32)p.z <= *z)
+				return;
+			break;
+		}
+	}
+
+	Color d = { px[3], px[2], px[1], px[0] };
+
+	// blend
+	if(srAlphaBlendEnable){
+		int ar, ag, ab;
+		int br, bg, bb;
+		int dr, dg, db;
+		int ca;
+		switch(srAlphaBlendA){
+		case ALPHABLEND_SRC:
+			ar = c.r;
+			ag = c.g;
+			ab = c.b;
+			break;
+		case ALPHABLEND_DST:
+			ar = d.r;
+			ag = d.g;
+			ab = d.b;
+			break;
+		case ALPHABLEND_ZERO:
+			ar = 0;
+			ag = 0;
+			ab = 0;
+			break;
+		default: assert(0);
+		}
+		switch(srAlphaBlendB){
+		case ALPHABLEND_SRC:
+			br = c.r;
+			bg = c.g;
+			bb = c.b;
+			break;
+		case ALPHABLEND_DST:
+			br = d.r;
+			bg = d.g;
+			bb = d.b;
+			break;
+		case ALPHABLEND_ZERO:
+			br = 0;
+			bg = 0;
+			bb = 0;
+			break;
+		default: assert(0);
+		}
+		switch(srAlphaBlendC){
+		case ALPHABLEND_SRC:
+			ca = c.a;
+			break;
+		case ALPHABLEND_DST:
+			ca = d.a;
+			break;
+		case ALPHABLEND_FIX:
+			ca = srAlphaBlendFix;
+			break;
+		default: assert(0);
+		}
+		switch(srAlphaBlendD){
+		case ALPHABLEND_SRC:
+			dr = c.r;
+			dg = c.g;
+			db = c.b;
+			break;
+		case ALPHABLEND_DST:
+			dr = d.r;
+			dg = d.g;
+			db = d.b;
+			break;
+		case ALPHABLEND_ZERO:
+			dr = 0;
+			dg = 0;
+			db = 0;
+			break;
+		default: assert(0);
+		}
+
+		int r, g, b;
+		r = ((ar - br) * ca >> 7) + dr;
+		g = ((ag - bg) * ca >> 7) + dg;
+		b = ((ab - bb) * ca >> 7) + db;
+
+		c.r = clamp(r);
+		c.g = clamp(g);
+		c.b = clamp(b);
+	}
+
+	if(fbwrite)
+		writefb(canvas, p.x, p.y, c);
+	if(zbwrite)
+		*z = p.z;
+}
+
+Color
+sampletex_nearest(int u, int v)
+{
+	Texture *tex = srTexture;
+
+	const int usize = tex->w;
+	const int vsize = tex->h;
+
+	int iu = u >> 4;
+	int iv = v >> 4;
+
+	switch(srWrapU){
+	case WRAP_REPEAT:
+		iu %= usize;
+		break;
+	case WRAP_CLAMP:
+		if(iu < 0) iu = 0;
+		if(iu >= usize) iu = usize-1;
+		break;
+	case WRAP_BORDER:
+		if(iu < 0 || iu >= usize)
+			return srBorder;
+	}
+
+	switch(srWrapV){
+	case WRAP_REPEAT:
+		iv %= vsize;
+		break;
+	case WRAP_CLAMP:
+		if(iv < 0) iv = 0;
+		if(iv >= vsize) iv = vsize-1;
+		break;
+	case WRAP_BORDER:
+		if(iv < 0 || iv >= vsize)
+			return srBorder;
+	}
+
+	u8 *cp = &tex->pixels[(iv*tex->w + iu)*4];
+	Color c = { cp[0], cp[1], cp[2], cp[3] };
+	return c;
+}
+
+// t is texture, f is fragment
+Color
+texfunc(Color t, Color f)
+{
+	int r, g, b, a;
+	switch(srTexFunc){
+	case TFUNC_MODULATE:
+		r = t.r * f.r >> 7;
+		g = t.g * f.g >> 7;
+		b = t.b * f.b >> 7;
+		a = srTexUseAlpha ?
+			t.a * f.a >> 7 :
+			f.a;
+		break;
+	case TFUNC_DECAL:
+		r = t.r;
+		g = t.g;
+		b = t.b;
+		a = srTexUseAlpha ? t.a : f.a;
+		break;
+	case TFUNC_HIGHLIGHT:
+		r = (t.r * f.r >> 7) + f.a;
+		g = (t.g * f.g >> 7) + f.a;
+		b = (t.b * f.b >> 7) + f.a;
+		a = srTexUseAlpha ?
+			t.a + f.a :
+			f.a;
+		break;
+	case TFUNC_HIGHLIGHT2:
+		r = (t.r * f.r >> 7) + f.a;
+		g = (t.g * f.g >> 7) + f.a;
+		b = (t.b * f.b >> 7) + f.a;
+		a = srTexUseAlpha ? t.a : f.a;
+		break;
+	}
+	Color v;
+	v.r = clamp(r);
+	v.g = clamp(g);
+	v.b = clamp(b);
+	v.a = clamp(a);
+	return v;
+}
+
+Point3 mkpnt(int x, int y, int z) { Point3 p = { x, y, z}; return p; }
+
+void
+drawRect(Canvas *canvas, Point3 p1, Point3 p2, Color c)
+{
+	int x, y;
+	for(y = p1.y; y <= p2.y; y++)
+		for(x = p1.x; x <= p2.x; x++)
+			putpixel(canvas, mkpnt(x, y, 0), c);
+}
+
+void
+drawLine(Canvas *canvas, Point3 p1, Point3 p2, Color c)
+{
+	int dx, dy;
+	int incx, incy;
+	int e;
+	int x, y;
+
+	dx = abs(p2.x-p1.x);
+	incx = p2.x > p1.x ? 1 : -1;
+	dy = abs(p2.y-p1.y);
+	incy = p2.y > p1.y ? 1 : -1;
+	e = 0;
+	if(dx == 0){
+		for(y = p1.y; y != p2.y; y += incy)
+			putpixel(canvas, mkpnt(p1.x, y, 0), c);
+	}else if(dx > dy){
+		y = p1.y;
+		for(x = p1.x; x != p2.x; x += incx){
+			putpixel(canvas, mkpnt(x, y, 0), c);
+			e += dy;
+			if(2*e >= dx){
+				e -= dx;
+				y += incy;
+			}
+		}
+	}else{
+		x = p1.x;
+		for(y = p1.y; y != p2.y; y += incy){
+			putpixel(canvas, mkpnt(x, y, 0), c);
+			e += dx;
+			if(2*e >= dy){
+				e -= dy;
+				x += incx;
+			}
+		}
+	}
+}
+
+/*
+	attibutes we want to interpolate:
+	R G B A
+	U V / S T Q
+	X Y Z F
+*/
+
+struct TriAttribs
+{
+	i64 z;
+	i32 r, g, b, a;
+	i32 f;
+	float s, t;
+	float q;
+};
+
+static void
+add1(struct TriAttribs *a, struct TriAttribs *b)
+{
+	a->z += b->z;
+	a->r += b->r;
+	a->g += b->g;
+	a->b += b->b;
+	a->a += b->a;
+	a->f += b->f;
+	a->s += b->s;
+	a->t += b->t;
+	a->q += b->q;
+}
+
+static void
+sub1(struct TriAttribs *a, struct TriAttribs *b)
+{
+	a->z -= b->z;
+	a->r -= b->r;
+	a->g -= b->g;
+	a->b -= b->b;
+	a->a -= b->a;
+	a->f -= b->f;
+	a->s -= b->s;
+	a->t -= b->t;
+	a->q -= b->q;
+}
+
+static void
+guard(struct TriAttribs *a)
+{
+	if(a->z < 0) a->z = 0;
+	else if(a->z > 0x3FFFFFFFC000LL) a->z = 0x3FFFFFFFC000LL;
+	if(a->r < 0) a->r = 0;
+	else if(a->r > 0xFF000) a->r = 0xFF000;
+	if(a->g < 0) a->g = 0;
+	else if(a->g > 0xFF000) a->g = 0xFF000;
+	if(a->b < 0) a->b = 0;
+	else if(a->b > 0xFF000) a->b = 0xFF000;
+	if(a->a < 0) a->a = 0;
+	else if(a->a > 0xFF000) a->a = 0xFF000;
+	if(a->f < 0) a->f = 0;
+	else if(a->f > 0xFF000) a->f = 0xFF000;
+}
+
+struct RasTri
+{
+	int x, y;
+	int ymid, yend;
+	int right;
+	int e[2], dx[3], dy[3];
+	struct TriAttribs gx, gy, v, s;
+};
+
+static int
+triangleSetup(struct RasTri *tri, Vertex v1, Vertex v2, Vertex v3)
+{
+	int dx1, dx2, dx3;
+	int dy1, dy2, dy3;
+
+	dy1 = v3.y - v1.y;	// long edge
+	if(dy1 == 0) return 1;
+	dx1 = v3.x - v1.x;
+	dx2 = v2.x - v1.x;	// first small edge
+	dy2 = v2.y - v1.y;
+	dx3 = v3.x - v2.x;	// second small edge
+	dy3 = v3.y - v2.y;
+
+	// this is twice the triangle area
+	const int area = dx2*dy1 - dx1*dy2;
+	if(area == 0) return 1;
+	// figure out if 0 or 1 is the right edge
+	tri->right = area < 0;
+
+	/* The gradients are to step whole pixels,
+	 * so they are pre-multiplied by 16. */
+
+	float denom = 16.0f/area;
+	// gradients x
+#define GX(p) ((v2.p - v1.p)*dy1 - (v3.p - v1.p)*dy2)
+	tri->gx.z = GX(z)*denom * 16384;
+	tri->gx.r = GX(r)*denom * 4096;
+	tri->gx.g = GX(g)*denom * 4096;
+	tri->gx.b = GX(b)*denom * 4096;
+	tri->gx.a = GX(a)*denom * 4096;
+	tri->gx.f = GX(f)*denom * 4096;
+	tri->gx.s = GX(s)*denom;
+	tri->gx.t = GX(t)*denom;
+	tri->gx.q = GX(q)*denom;
+
+	// gradients y
+	denom = -denom;
+#define GY(p) ((v2.p - v1.p)*dx1 - (v3.p - v1.p)*dx2)
+	tri->gy.z = GY(z)*denom * 16384;
+	tri->gy.r = GY(r)*denom * 4096;
+	tri->gy.g = GY(g)*denom * 4096;
+	tri->gy.b = GY(b)*denom * 4096;
+	tri->gy.a = GY(a)*denom * 4096;
+	tri->gy.f = GY(f)*denom * 4096;
+	tri->gy.s = GY(s)*denom;
+	tri->gy.t = GY(t)*denom;
+	tri->gy.q = GY(q)*denom;
+
+	tri->ymid = CEIL(v2.y);
+	tri->yend = CEIL(v3.y);
+
+	tri->y = CEIL(v1.y);
+	tri->x = CEIL(v1.x);
+
+	tri->dy[0] = dy2<<4;	// upper edge
+	tri->dy[1] = dy1<<4;	// lower edge
+	tri->dy[2] = dy3<<4;	// long edge
+	tri->dx[0] = dx2<<4;
+	tri->dx[1] = dx1<<4;
+	tri->dx[2] = dx3<<4;
+
+	// prestep to land on pixel center
+
+	int stepx = v1.x - (tri->x<<4);
+	int stepy = v1.y - (tri->y<<4);
+	tri->e[0] = (-stepy*tri->dx[0] + stepx*tri->dy[0]) >> 4;
+	tri->e[1] = (-stepy*tri->dx[1] + stepx*tri->dy[1]) >> 4;
+
+	// attributes along interpolated edge	
+	// why is this cast needed? (mingw)
+	tri->v.z = (i64)v1.z*16384 - (stepy*tri->gy.z + stepx*tri->gx.z)/16;
+	tri->v.r = v1.r*4096 - (stepy*tri->gy.r + stepx*tri->gx.r)/16;
+	tri->v.g = v1.g*4096 - (stepy*tri->gy.g + stepx*tri->gx.g)/16;
+	tri->v.b = v1.b*4096 - (stepy*tri->gy.b + stepx*tri->gx.b)/16;
+	tri->v.a = v1.a*4096 - (stepy*tri->gy.a + stepx*tri->gx.a)/16;
+	tri->v.f = v1.f*4096 - (stepy*tri->gy.f + stepx*tri->gx.f)/16;
+	tri->v.s = v1.s - (stepy*tri->gy.s + stepx*tri->gx.s)/16.0f;
+	tri->v.t = v1.t - (stepy*tri->gy.t + stepx*tri->gx.t)/16.0f;
+	tri->v.q = v1.q - (stepy*tri->gy.q + stepx*tri->gx.q)/16.0f;
+
+	return 0;
+}
+
+void
+drawTriangle(Canvas *canvas, Vertex v1, Vertex v2, Vertex v3)
+{
+	Color c;
+	struct RasTri tri;
+	int stepx, stepy;
+
+	// Sort such that we have from top to bottom v1,v2,v3
+	if(v2.y < v1.y){ Vertex tmp = v1; v1 = v2; v2 = tmp; }
+	if(v3.y < v1.y){ Vertex tmp = v1; v1 = v3; v3 = tmp; }
+	if(v3.y < v2.y){ Vertex tmp = v2; v2 = v3; v3 = tmp; }
+
+	if(triangleSetup(&tri, v1, v2, v3))
+		return;
+
+	// Current scanline start and end
+	int xn[2] = { tri.x, tri.x };
+	int a = !tri.right;	// left edge
+	int b = tri.right;	// right edge
+
+	// If upper triangle has no height, only do the lower part
+	if(tri.dy[0] == 0)
+		goto secondtri;
+	while(tri.y < tri.yend){
+		/* TODO: is this the righ way to step the edges? */
+
+		/* Step x and interpolated value down left edge */
+		while(tri.e[a] <= -tri.dy[a]){
+			xn[a]--;
+			tri.e[a] += tri.dy[a];
+			sub1(&tri.v, &tri.gx);
+		}
+		while(tri.e[a] > 0){
+			xn[a]++;
+			tri.e[a] -= tri.dy[a];
+			add1(&tri.v, &tri.gx);
+		}
+
+		/* Step x down right edge */
+		while(tri.e[b] <= -tri.dy[b]){
+			xn[b]--;
+			tri.e[b] += tri.dy[b];
+		}
+		while(tri.e[b] > 0){
+			xn[b]++;
+			tri.e[b] -= tri.dy[b];
+		}
+
+		// When we reach the mid vertex, change state and jump to start of loop again
+		// TODO: this is a bit ugly in here...can we fix it?
+		if(tri.y == tri.ymid){
+		secondtri:
+			tri.dx[0] = tri.dx[2];
+			tri.dy[0] = tri.dy[2];
+			// Either the while prevents this or we returned early because dy1 == 0
+			assert(tri.dy[0] != 0);
+			stepx = v2.x - (xn[0]<<4);
+			stepy = v2.y - (tri.y<<4);
+			tri.e[0] = (-stepy*tri.dx[0] + stepx*tri.dy[0]) >> 4;
+
+			tri.ymid = -1;	// so we don't do this again
+			continue;
+		}
+
+		/* Rasterize one line */
+		tri.s = tri.v;
+		for(tri.x = xn[a]; tri.x < xn[b]; tri.x++){
+			guard(&tri.s);
+			c.r = tri.s.r >> 12;
+			c.g = tri.s.g >> 12;
+			c.b = tri.s.b >> 12;
+			c.a = tri.s.a >> 12;
+			if(srTexEnable && srTexture){
+				float w = 1.0f/tri.s.q;
+				float s = tri.s.s * w;
+				float t = tri.s.t * w;
+				int u = s * srTexture->w * 16;
+				int v = t * srTexture->h * 16;
+				Color texc = sampletex_nearest(u, v);
+				c = texfunc(texc, c);
+			}
+			if(srFogEnable){
+				const int f = tri.s.f >> 12;
+				c.r = (f*c.r >> 8) + ((255 - f)*srFogCol.r >> 8);
+				c.g = (f*c.g >> 8) + ((255 - f)*srFogCol.g >> 8);
+				c.b = (f*c.b >> 8) + ((255 - f)*srFogCol.b >> 8);
+			}
+			putpixel(canvas, mkpnt(tri.x, tri.y, tri.s.z>>14), c);
+			add1(&tri.s, &tri.gx);
+		}
+
+		/* Step in y */
+		tri.y++;
+		tri.e[a] += tri.dx[a];
+		tri.e[b] += tri.dx[b];
+		add1(&tri.v, &tri.gy);
+	}
+}
+
+Canvas *canvas;
+
+}
+
+using namespace rw;
+
+void
+rastest_renderTriangles(RWDEVICE::Im2DVertex *scrverts, int32 numVerts, uint16 *indices, int32 numTris)
+{
+	int i;
+	RGBA col;
+	rs::Vertex v[3];
+	RWDEVICE::Im2DVertex *iv;
+
+	rs::srDepthTestEnable = 1;
+	rs::srAlphaTestEnable = 0;
+	rs::srTexEnable = 0;
+	rs::srAlphaBlendEnable = 0;
+
+	while(numTris--){
+		for(i = 0; i < 3; i++){
+			iv = &scrverts[indices[i]];
+			v[i].x = iv->x * 16.0f;
+			v[i].y = iv->y * 16.0f;
+			v[i].z = 16777216*(1.0f-iv->z);
+			v[i].q = iv->w;
+			col = iv->getColor();
+			v[i].r = col.red;
+			v[i].g = col.green;
+			v[i].b = col.blue;
+			v[i].a = col.alpha;
+			v[i].f = 0;
+			v[i].s = iv->u*iv->w;
+			v[i].t = iv->v*iv->w;
+		}
+		drawTriangle(rs::canvas, v[0], v[1], v[2]);
+
+		indices += 3;
+	}
+}
+
+extern rw::Raster *testras;
+
+void
+beginSoftras(void)
+{
+	Camera *cam = (Camera*)engine->currentCamera;
+
+	if(rs::canvas == nil ||
+	   cam->frameBuffer->width != rs::canvas->w ||
+	   cam->frameBuffer->height != rs::canvas->h){
+		rs::canvas = rs::makecanvas(cam->frameBuffer->width, cam->frameBuffer->height);
+		testras = rw::Raster::create(rs::canvas->w, rs::canvas->h, 32, rw::Raster::C8888);
+	}
+
+	clearcanvas(rs::canvas);
+	rs::srScissorX0 = 0;
+	rs::srScissorX1 = rs::canvas->w-1;
+	rs::srScissorY0 = 0;
+	rs::srScissorY1 = rs::canvas->h-1;
+}
+
+void
+endSoftras(void)
+{
+	int i;
+	uint8 *dst = testras->lock(0, Raster::LOCKWRITE|Raster::LOCKNOFETCH);
+	if(dst == nil)
+		return;
+	uint8 *src = rs::canvas->fb;
+	for(i = 0; i < rs::canvas->w*rs::canvas->h; i++){
+		dst[0] = src[1];
+		dst[1] = src[2];
+		dst[2] = src[3];
+		dst[3] = src[0];
+		dst += 4;
+		src += 4;
+	}
+	// abgr in canvas
+	// bgra in raster
+	testras->unlock(0);
+}
+
+
+/*
+typedef struct PixVert PixVert;
+struct PixVert
+{
+	float x, y, z, q;
+	int r, g, b, a;
+	float u, v;
+};
+#include "test.inc"
+
+void
+drawtest(void)
+{
+	int i, j;
+	rs::Vertex v[3];
+
+	rs::srDepthTestEnable = 1;
+	rs::srAlphaTestEnable = 0;
+	rs::srTexEnable = 0;
+	rs::srAlphaBlendEnable = 0;
+
+	for(i = 0; i < nelem(verts); i += 3){
+		for(j = 0; j < 3; j++){
+			v[j].x = verts[i+j].x * 16.0f;
+			v[j].y = verts[i+j].y * 16.0f;
+			v[j].z = 16777216*(1.0f - verts[i+j].z);
+			v[j].q = verts[i+j].q;
+			v[j].r = verts[i+j].r;
+			v[j].g = verts[i+j].g;
+			v[j].b = verts[i+j].b;
+			v[j].a = verts[i+j].a;
+			v[j].f = 0;
+			v[j].s = verts[i+j].u*v[j].q;
+			v[j].t = verts[i+j].v*v[j].q;
+		}
+		drawTriangle(rs::canvas, v[0], v[1], v[2]);
+	}
+//exit(0);
+}
+*/

tools/playground/tl_tests.cpp

@@ -0,0 +1,662 @@
+#include <rw.h>
+#include <skeleton.h>
+
+extern bool dosoftras;
+
+using namespace rw;
+using namespace RWDEVICE;
+
+void rastest_renderTriangles(RWDEVICE::Im2DVertex *scrverts, int32 verts, uint16 *indices, int32 numTris);
+
+//
+// This is a test to implement T&L in software and render with Im2D
+//
+
+namespace gen {
+
+#define MAX_LIGHTS 8
+
+struct Directional {
+	V3d at;
+	RGBAf color;
+};
+static Directional directionals[MAX_LIGHTS];
+static int32 numDirectionals;
+static RGBAf ambLight;
+
+static void
+enumLights(Matrix *lightmat)
+{
+	int32 n;
+	World *world;
+
+	world = (World*)engine->currentWorld;
+	ambLight.red = 0.0;
+	ambLight.green = 0.0;
+	ambLight.blue = 0.0;
+	ambLight.alpha = 0.0;
+	numDirectionals = 0;
+	// only unpositioned lights right now
+	FORLIST(lnk, world->globalLights){
+		Light *l = Light::fromWorld(lnk);
+		if(l->getType() == Light::DIRECTIONAL){
+			if(numDirectionals >= MAX_LIGHTS)
+				continue;
+			n = numDirectionals++;
+			V3d::transformVectors(&directionals[n].at, &l->getFrame()->getLTM()->at, 1, lightmat);
+			directionals[n].color = l->color;
+			directionals[n].color.alpha = 0.0f;
+		}else if(l->getType() == Light::AMBIENT){
+			ambLight.red   += l->color.red;
+			ambLight.green += l->color.green;
+			ambLight.blue  += l->color.blue;
+		}
+	}
+}
+
+struct ObjSpace3DVertex
+{
+	V3d objVertex;
+	V3d objNormal;
+	RGBA color;
+	TexCoords texCoords;
+};
+
+enum {
+	CLIPXLO = 0x01,
+	CLIPXHI = 0x02,
+	CLIPX   = 0x03,
+	CLIPYLO = 0x04,
+	CLIPYHI = 0x08,
+	CLIPY   = 0x0C,
+	CLIPZLO = 0x10,
+	CLIPZHI = 0x20,
+	CLIPZ   = 0x30,
+};
+
+struct CamSpace3DVertex
+{
+	V3d camVertex;
+	uint8 clipFlags;
+	RGBAf color;
+	TexCoords texCoords;
+};
+
+struct InstanceData
+{
+	uint16 *indices;
+	int32 numIndices;
+	ObjSpace3DVertex *vertices;
+	int32 numVertices;
+	// int vertStride;	// not really needed right now
+	Material *material;
+	Mesh *mesh;
+};
+
+struct InstanceDataHeader : public rw::InstanceDataHeader
+{
+	uint32 serialNumber;
+	ObjSpace3DVertex *vertices;
+	uint16 *indices;
+	InstanceData *inst;
+};
+
+static void
+instanceAtomic(Atomic *atomic)
+{
+	static V3d zeroNorm = { 0.0f, 0.0f, 0.0f };
+	static RGBA black = { 0, 0, 0, 255 };
+	static TexCoords zeroTex = { 0.0f, 0.0f };
+	int i;
+	uint j;
+	int x, x1, x2, x3;
+	Geometry *geo;
+	MeshHeader *header;
+	Mesh *mesh;
+	InstanceDataHeader *insthead;
+	InstanceData *inst;
+	uint32 firstVert;
+	uint16 *srcindices, *dstindices;
+
+	geo = atomic->geometry;
+	if(geo->instData)
+		return;
+	header = geo->meshHeader;
+	int numTris;
+	if(header->flags & MeshHeader::TRISTRIP)
+		numTris = header->totalIndices - 2*header->numMeshes;
+	else
+		numTris = header->totalIndices / 3;
+	int size;
+	size = sizeof(InstanceDataHeader) + header->numMeshes*sizeof(InstanceData) +
+		geo->numVertices*sizeof(ObjSpace3DVertex) + numTris*6*sizeof(uint16);
+	insthead = (InstanceDataHeader*)rwNew(size, ID_GEOMETRY);
+	geo->instData = insthead;
+	insthead->platform = 0;
+	insthead->serialNumber = header->serialNum;
+	inst = (InstanceData*)(insthead+1);
+	insthead->inst = inst;
+	insthead->vertices = (ObjSpace3DVertex*)(inst+header->numMeshes);
+	dstindices = (uint16*)(insthead->vertices+geo->numVertices);
+	insthead->indices = dstindices;
+
+	// TODO: morphing
+	MorphTarget *mt = geo->morphTargets;
+	for(i = 0; i < geo->numVertices; i++){
+		insthead->vertices[i].objVertex = mt->vertices[i];
+		if(geo->flags & Geometry::NORMALS)
+			insthead->vertices[i].objNormal = mt->normals[i];
+		else
+			insthead->vertices[i].objNormal = zeroNorm;
+		if(geo->flags & Geometry::PRELIT)
+			insthead->vertices[i].color = geo->colors[i];
+		else
+			insthead->vertices[i].color = black;
+		if(geo->numTexCoordSets > 0)
+			insthead->vertices[i].texCoords = geo->texCoords[0][i];
+		else
+			insthead->vertices[i].texCoords = zeroTex;
+	}
+
+	mesh = header->getMeshes();
+	for(i = 0; i < header->numMeshes; i++){
+		findMinVertAndNumVertices(mesh->indices, mesh->numIndices,
+		                          &firstVert, &inst->numVertices);
+		inst->indices = dstindices;
+		inst->vertices = &insthead->vertices[firstVert];
+		inst->mesh = mesh;
+		inst->material = mesh->material;
+		srcindices = mesh->indices;
+		if(header->flags & MeshHeader::TRISTRIP){
+			inst->numIndices = 0;
+			x = 0;
+			for(j = 0; j < mesh->numIndices-2; j++){
+				x1 = srcindices[j+x];
+				x ^= 1;
+				x2 = srcindices[j+x];
+				x3 = srcindices[j+2];
+				if(x1 != x2 && x2 != x3 && x1 != x3){
+					dstindices[0] = x1;
+					dstindices[1] = x2;
+					dstindices[2] = x3;
+					dstindices += 3;
+					inst->numIndices += 3;
+				}
+			}
+		}else{
+			inst->numIndices = mesh->numIndices;
+			for(j = 0; j < mesh->numIndices; j += 3){
+				dstindices[0] = srcindices[j+0] - firstVert;
+				dstindices[1] = srcindices[j+1] - firstVert;
+				dstindices[2] = srcindices[j+2] - firstVert;
+				dstindices += 3;
+			}
+		}
+
+		inst++;
+		mesh++;
+	}
+}
+
+struct MeshState
+{
+	int32 flags;
+	Matrix obj2cam;
+	Matrix obj2world;
+	int32 numVertices;
+	int32 numPrimitives;
+	SurfaceProperties surfProps;
+	RGBA matCol;
+};
+
+static void
+cam2screen(Im2DVertex *scrvert, CamSpace3DVertex *camvert)
+{
+	RGBA col;
+	float32 recipZ;
+	Camera *cam = (Camera*)engine->currentCamera;
+	int32 width = cam->frameBuffer->width;
+	int32 height = cam->frameBuffer->height;
+	recipZ = 1.0f/camvert->camVertex.z;
+
+	scrvert->setScreenX(camvert->camVertex.x * recipZ * width);
+	scrvert->setScreenY(camvert->camVertex.y * recipZ * height);
+//	scrvert->setScreenX(camvert->camVertex.x * recipZ * width/2 + width/4);
+//	scrvert->setScreenY(camvert->camVertex.y * recipZ * height/2 + height/4);
+	scrvert->setScreenZ(recipZ * cam->zScale + cam->zShift);
+	scrvert->setCameraZ(camvert->camVertex.z);
+	scrvert->setRecipCameraZ(recipZ);
+	scrvert->setU(camvert->texCoords.u, recipZ);
+	scrvert->setV(camvert->texCoords.v, recipZ);
+	convColor(&col, &camvert->color);
+	scrvert->setColor(col.red, col.green, col.blue, col.alpha);
+}
+
+static void
+transform(MeshState *mstate, ObjSpace3DVertex *objverts, CamSpace3DVertex *camverts, Im2DVertex *scrverts)
+{
+	int32 i;
+	float32 z;
+	Camera *cam = (Camera*)engine->currentCamera;
+
+	for(i = 0; i < mstate->numVertices; i++){
+		V3d::transformPoints(&camverts[i].camVertex, &objverts[i].objVertex, 1, &mstate->obj2cam);
+		convColor(&camverts[i].color, &objverts[i].color);
+		camverts[i].texCoords = objverts[i].texCoords;
+
+		camverts[i].clipFlags = 0;
+		z = camverts[i].camVertex.z;
+		// 0 < x < z
+		if(camverts[i].camVertex.x >= z) camverts[i].clipFlags |= CLIPXHI;
+		if(camverts[i].camVertex.x <= 0) camverts[i].clipFlags |= CLIPXLO;
+		// 0 < y < z
+		if(camverts[i].camVertex.y >= z) camverts[i].clipFlags |= CLIPYHI;
+		if(camverts[i].camVertex.y <= 0) camverts[i].clipFlags |= CLIPYLO;
+		// near < z < far
+		if(z >= cam->farPlane) camverts[i].clipFlags |= CLIPZHI;
+		if(z <= cam->nearPlane) camverts[i].clipFlags |= CLIPZLO;
+
+		cam2screen(&scrverts[i], &camverts[i]);
+	}
+}
+
+static void
+light(MeshState *mstate, ObjSpace3DVertex *objverts, CamSpace3DVertex *camverts)
+{
+	int32 i;
+	RGBAf colf;
+	RGBAf amb = ambLight;
+	amb = scale(ambLight, mstate->surfProps.ambient);
+	for(i = 0; i < mstate->numVertices; i++){
+		camverts[i].color = add(camverts[i].color, amb);
+		if((mstate->flags & Geometry::NORMALS) == 0)
+			continue;
+		for(int32 k = 0; k < numDirectionals; k++){
+			float32 f = dot(objverts[i].objNormal, neg(directionals[k].at));
+			if(f <= 0.0f) continue;
+			f *= mstate->surfProps.diffuse;
+			colf = scale(directionals[k].color, f);
+			camverts[i].color = add(camverts[i].color, colf);
+		}
+	}
+}
+
+static void
+postlight(MeshState *mstate, CamSpace3DVertex *camverts, Im2DVertex *scrverts)
+{
+	int32 i;
+	RGBA col;
+	RGBAf colf;
+	for(i = 0; i < mstate->numVertices; i++){
+		convColor(&colf, &mstate->matCol);
+		camverts[i].color = modulate(camverts[i].color, colf);
+		clamp(&camverts[i].color);
+		convColor(&col, &camverts[i].color);
+		scrverts[i].setColor(col.red, col.green, col.blue, col.alpha);
+	}
+}
+
+static int32
+cullTriangles(MeshState *mstate, CamSpace3DVertex *camverts, uint16 *indices, uint16 *clipindices)
+{
+	int32 i;
+	int32 x1, x2, x3;
+	int32 newNumPrims;
+	int32 numClip;
+
+	newNumPrims = 0;
+	numClip = 0;
+	for(i = 0; i < mstate->numPrimitives; i++, indices += 3){
+		x1 = indices[0];
+		x2 = indices[1];
+		x3 = indices[2];
+		// Only a simple frustum call
+		if(camverts[x1].clipFlags &
+		   camverts[x2].clipFlags &
+		   camverts[x3].clipFlags)
+			continue;
+		if(camverts[x1].clipFlags |
+		   camverts[x2].clipFlags |
+		   camverts[x3].clipFlags)
+			numClip++;
+		// The Triangle is in, probably
+		clipindices[0] = x1;
+		clipindices[1] = x2;
+		clipindices[2] = x3;
+		clipindices += 3;
+		newNumPrims++;
+	}
+	mstate->numPrimitives = newNumPrims;
+	return numClip;
+}
+
+static void
+interpVertex(CamSpace3DVertex *out, CamSpace3DVertex *v1, CamSpace3DVertex *v2, float32 t)
+{
+	float32 z;
+	float32 invt;
+	Camera *cam = (Camera*)engine->currentCamera;
+
+	invt = 1.0f - t;
+	out->camVertex = add(scale(v1->camVertex, invt), scale(v2->camVertex, t));
+	out->color = add(scale(v1->color, invt), scale(v2->color, t));
+	out->texCoords.u = v1->texCoords.u*invt + v2->texCoords.u*t;
+	out->texCoords.v = v1->texCoords.v*invt + v2->texCoords.v*t;
+
+	out->clipFlags = 0;
+	z = out->camVertex.z;
+	// 0 < x < z
+	if(out->camVertex.x >= z) out->clipFlags |= CLIPXHI;
+	if(out->camVertex.x <= 0) out->clipFlags |= CLIPXLO;
+	// 0 < y < z
+	if(out->camVertex.y >= z) out->clipFlags |= CLIPYHI;
+	if(out->camVertex.y <= 0) out->clipFlags |= CLIPYLO;
+	// near < z < far
+	if(z >= cam->farPlane) out->clipFlags |= CLIPZHI;
+	if(z <= cam->nearPlane) out->clipFlags |= CLIPZLO;
+}
+
+static void
+clipTriangles(MeshState *mstate, CamSpace3DVertex *camverts, Im2DVertex *scrverts, uint16 *indices, uint16 *clipindices)
+{
+	int32 i, j;
+	int32 x1, x2, x3;
+	int32 newNumPrims;
+	CamSpace3DVertex buf[18];
+	CamSpace3DVertex *in, *out, *tmp;
+	int32 nin, nout;
+	float32 t;
+	Camera *cam = (Camera*)engine->currentCamera;
+
+	newNumPrims = 0;
+	for(i = 0; i < mstate->numPrimitives; i++, indices += 3){
+		x1 = indices[0];
+		x2 = indices[1];
+		x3 = indices[2];
+
+		if((camverts[x1].clipFlags |
+		    camverts[x2].clipFlags |
+		    camverts[x3].clipFlags) == 0){
+			// all inside
+			clipindices[0] = x1;
+			clipindices[1] = x2;
+			clipindices[2] = x3;
+			clipindices += 3;
+			newNumPrims++;
+			continue;
+		}
+
+		// set up triangle
+		in = &buf[0];
+		out = &buf[9];
+		in[0] = camverts[x1];
+		in[1] = camverts[x2];
+		in[2] = camverts[x3];
+		nin = 3;
+		nout = 0;
+
+#define V(a) in[a].camVertex.
+
+		// clip z near
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPZLO){
+				t = (cam->nearPlane - V(x1)z)/(V(x2)z - V(x1)z);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPZLO) == 0)
+				out[nout++] = in[x2];
+		}
+		// clip z far
+		nin = nout; nout = 0;
+		tmp = in; in = out; out = tmp;
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPZHI){
+				t = (cam->farPlane - V(x1)z)/(V(x2)z - V(x1)z);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPZHI) == 0)
+				out[nout++] = in[x2];
+		}
+		// clip y 0
+		nin = nout; nout = 0;
+		tmp = in; in = out; out = tmp;
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPYLO){
+				t = -V(x1)y/(V(x2)y - V(x1)y);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPYLO) == 0)
+				out[nout++] = in[x2];
+		}
+		// clip y z
+		nin = nout; nout = 0;
+		tmp = in; in = out; out = tmp;
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPYHI){
+				t = (V(x1)z - V(x1)y)/(V(x1)z - V(x1)y + V(x2)y - V(x2)z);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPYHI) == 0)
+				out[nout++] = in[x2];
+		}
+		// clip x 0
+		nin = nout; nout = 0;
+		tmp = in; in = out; out = tmp;
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPXLO){
+				t = -V(x1)x/(V(x2)x - V(x1)x);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPXLO) == 0)
+				out[nout++] = in[x2];
+		}
+		// clip x z
+		nin = nout; nout = 0;
+		tmp = in; in = out; out = tmp;
+		for(j = 0; j < nin; j++){
+			x1 = j;
+			x2 = (j+1) % nin;
+			if((in[x1].clipFlags ^ in[x2].clipFlags) & CLIPXHI){
+				t = (V(x1)z - V(x1)x)/(V(x1)z - V(x1)x + V(x2)x - V(x2)z);
+				interpVertex(&out[nout++], &in[x1], &in[x2], t);
+			}
+			if((in[x2].clipFlags & CLIPXHI) == 0)
+				out[nout++] = in[x2];
+		}
+
+		// Insert new triangles
+		x1 = mstate->numVertices;
+		for(j = 0; j < nout; j++){
+			x2 = mstate->numVertices++;
+			camverts[x2] = out[j];
+			cam2screen(&scrverts[x2], &camverts[x2]);
+		}
+		x2 = x1+1;
+		for(j = 0; j < nout-2; j++){
+			clipindices[0] = x1;
+			clipindices[1] = x2++;
+			clipindices[2] = x2;
+			clipindices += 3;
+			newNumPrims++;
+		}
+	}
+	mstate->numPrimitives = newNumPrims;
+}
+
+static void
+submitTriangles(RWDEVICE::Im2DVertex *scrverts, int32 numVerts, uint16 *indices, int32 numTris)
+{
+	rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
+	if(dosoftras)
+		rastest_renderTriangles(scrverts, numVerts, indices, numTris);
+	else{
+		//int i;
+		//for(i = 0; i < numVerts; i++){
+		//	scrverts[i].x = (int)(scrverts[i].x*16.0f) / 16.0f;
+		//	scrverts[i].y = (int)(scrverts[i].y*16.0f) / 16.0f;
+		//}
+		im2d::RenderIndexedPrimitive(rw::PRIMTYPETRILIST, scrverts, numVerts,
+			indices, numTris*3);
+	}
+}
+
+
+static void
+drawMesh(MeshState *mstate, ObjSpace3DVertex *objverts, uint16 *indices)
+{
+	CamSpace3DVertex *camverts;
+	Im2DVertex *scrverts;
+	uint16 *cullindices, *clipindices;
+	uint32 numClip;
+
+	camverts = rwNewT(CamSpace3DVertex, mstate->numVertices, MEMDUR_FUNCTION);
+	scrverts = rwNewT(Im2DVertex, mstate->numVertices, MEMDUR_FUNCTION);
+	cullindices = rwNewT(uint16, mstate->numPrimitives*3, MEMDUR_FUNCTION);
+
+	transform(mstate, objverts, camverts, scrverts);
+
+	numClip = cullTriangles(mstate, camverts, indices, cullindices);
+
+//	int32 i;
+//	for(i = 0; i < mstate->numVertices; i++){
+//		if(camverts[i].clipFlags & CLIPX)
+//			camverts[i].color.red = 255;
+//		if(camverts[i].clipFlags & CLIPY)
+//			camverts[i].color.green = 255;
+//		if(camverts[i].clipFlags & CLIPZ)
+//			camverts[i].color.blue = 255;
+//	}
+
+	light(mstate, objverts, camverts);
+
+//	mstate->matCol.red = 255;
+//	mstate->matCol.green = 255;
+//	mstate->matCol.blue = 255;
+
+	postlight(mstate, camverts, scrverts);
+
+	// each triangle can have a maximum of 9 vertices (7 triangles) after clipping
+	// so resize to whatever we may need
+	camverts = rwResizeT(CamSpace3DVertex, camverts, mstate->numVertices + numClip*9, MEMDUR_FUNCTION);
+	scrverts = rwResizeT(Im2DVertex, scrverts, mstate->numVertices + numClip*9, MEMDUR_FUNCTION);
+	clipindices = rwNewT(uint16, mstate->numPrimitives*3 + numClip*7*3, MEMDUR_FUNCTION);
+
+	clipTriangles(mstate, camverts, scrverts, cullindices, clipindices);
+
+	submitTriangles(scrverts, mstate->numVertices, clipindices, mstate->numPrimitives);
+
+	rwFree(camverts);
+	rwFree(scrverts);
+	rwFree(cullindices);
+	rwFree(clipindices);
+}
+
+static void
+drawAtomic(Atomic *atomic)
+{
+	MeshState mstate;
+	Matrix lightmat;
+	Geometry *geo;
+	MeshHeader *header;
+	InstanceData *inst;
+	int i;
+	Camera *cam = (Camera*)engine->currentCamera;
+
+	instanceAtomic(atomic);
+
+	mstate.obj2world = *atomic->getFrame()->getLTM();
+	mstate.obj2cam = mstate.obj2world;
+	mstate.obj2cam.transform(&cam->viewMatrix, COMBINEPOSTCONCAT);
+	Matrix::invert(&lightmat, &mstate.obj2world);
+	enumLights(&lightmat);
+
+	geo = atomic->geometry;
+	header = geo->meshHeader;
+	inst = ((InstanceDataHeader*)geo->instData)->inst;
+	for(i = 0; i < header->numMeshes; i++){
+		mstate.flags = geo->flags;
+		mstate.numVertices = inst->numVertices;
+		mstate.numPrimitives = inst->numIndices / 3;
+		mstate.surfProps = inst->material->surfaceProps;
+		mstate.matCol = inst->material->color;
+		drawMesh(&mstate, inst->vertices, inst->indices);
+		inst++;
+	}
+}
+
+void
+tlTest(Clump *clump)
+{
+	FORLIST(lnk, clump->atomics){
+		Atomic *a = Atomic::fromClump(lnk);
+		drawAtomic(a);
+	}
+}
+
+}
+
+static Im2DVertex *clipverts;
+static int32 numClipverts;
+
+void
+genIm3DTransform(void *vertices, int32 numVertices, Matrix *world)
+{
+	Im3DVertex *objverts;
+	V3d pos;
+	Matrix xform;
+	Camera *cam;
+	int32 i;
+	objverts = (Im3DVertex*)vertices;
+
+	cam = (Camera*)engine->currentCamera;
+	int32 width = cam->frameBuffer->width;
+	int32 height = cam->frameBuffer->height;
+
+
+	xform = cam->viewMatrix;
+	if(world)
+		xform.transform(world, COMBINEPRECONCAT);
+
+	clipverts = rwNewT(Im2DVertex, numVertices, MEMDUR_EVENT);
+	numClipverts = numVertices;
+
+	for(i = 0; i < numVertices; i++){
+		V3d::transformPoints(&pos, &objverts[i].position, 1, &xform);
+
+		float32 recipZ = 1.0f/pos.z;
+		RGBA c = objverts[i].getColor();
+
+		clipverts[i].setScreenX(pos.x * recipZ * width);
+		clipverts[i].setScreenY(pos.y * recipZ * height);
+		clipverts[i].setScreenZ(recipZ * cam->zScale + cam->zShift);
+		clipverts[i].setCameraZ(pos.z);
+		clipverts[i].setRecipCameraZ(recipZ);
+		clipverts[i].setColor(c.red, c.green, c.blue, c.alpha);
+		clipverts[i].setU(objverts[i].u, recipZ);
+		clipverts[i].setV(objverts[i].v, recipZ);
+	}
+}
+
+void
+genIm3DRenderIndexed(PrimitiveType prim, void *indices, int32 numIndices)
+{
+	im2d::RenderIndexedPrimitive(prim, clipverts, numClipverts, indices, numIndices);
+}
+
+void
+genIm3DEnd(void)
+{
+	rwFree(clipverts);
+	clipverts = nil;
+	numClipverts = 0;
+}