some font rendering

tools/clumpview/font.cpp

@@ -0,0 +1,162 @@
+#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;
+
+	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;
+	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::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(1.0f/cam->nearPlane);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u);
+		vert->setV(v);
+		vert++;
+
+		vert->setScreenX(x+curfont->glyphwidth);
+		vert->setScreenY(y);
+		vert->setScreenZ(rw::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(1.0f/cam->nearPlane);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u+du);
+		vert->setV(v);
+		vert++;
+		
+		vert->setScreenX(x);
+		vert->setScreenY(y+curfont->glyphheight);
+		vert->setScreenZ(rw::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(1.0f/cam->nearPlane);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u);
+		vert->setV(v+dv);
+		vert++;
+
+		vert->setScreenX(x+curfont->glyphwidth);
+		vert->setScreenY(y+curfont->glyphheight);
+		vert->setScreenZ(rw::GetNearZ());
+		vert->setCameraZ(cam->nearPlane);
+		vert->setRecipCameraZ(1.0f/cam->nearPlane);
+		vert->setColor(255, 255, 255, 255);
+		vert->setU(u+du);
+		vert->setV(v+dv);
+		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++;
+	}
+	engine->imtexture = curfont->tex;
+	rw::engine->device.im2DRenderIndexedPrimitive(rw::PRIMTYPETRILIST,
+		vertices, curVert, indices, curIndex);
+
+}
+
+void
+initFont(void)
+{
+	vga.tex = Texture::read("Bm437_IBM_VGA8", "");
+	bios.tex = Texture::read("Bm437_IBM_BIOS", "");
+}
+
+/*
+#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/clumpview/main.cpp

@@ -14,6 +14,8 @@ rw::Texture *tex;
 rw::EngineStartParams engineStartParams;
 
 void tlTest(rw::Clump *clump);
+void initFont(void);
+void printScreen(const char *s, float x, float y);
 
 void
 Init(void)
@@ -158,6 +160,8 @@ InitRW(void)
 	if(!sk::InitRW())
 		return false;
 
+	initFont();
+
 	tex = rw::Texture::read("maze", nil);
 
 	char *filename = "teapot.dff";
@@ -270,6 +274,7 @@ Draw(float timeDelta)
 	Scene.clump->render();
 	im2dtest();
 //	tlTest(Scene.clump);
+	printScreen("Hello, World!", 10, 10);
 
 	camera->m_rwcam->endUpdate();
 	camera->m_rwcam->showRaster();