X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fpolytmpl.h;h=0f50b7d68c5168ad276dd5b1386e41448dcf9bc2;hb=HEAD;hp=db5997a2774f64180bb74c8966dedd533fb467bf;hpb=1bd8af3c3c9ec41903590d6ad24ff6313a5cc19b;p=dosdemo

diff --git a/src/polytmpl.h b/src/polytmpl.h
deleted file mode 100644
index db5997a..0000000
--- a/src/polytmpl.h
+++ /dev/null
@@ -1,268 +0,0 @@
-static uint32_t SCANEDGE(struct pvertex *v0, struct pvertex *v1, struct pvertex *edge)
-{
-	int i;
-	int32_t x, dx, dy, slope;
-#ifdef GOURAUD
-	int r, g, b, dr, dg, db;
-	int32_t rslope, gslope, bslope;
-#endif
-#ifdef TEXMAP
-	int32_t u, v, du, dv, uslope, vslope;
-#endif
-	int32_t start_idx, end_idx;
-
-	if(v0->y > v1->y) {
-		struct pvertex *tmp = v0;
-		v0 = v1;
-		v1 = tmp;
-	}
-
-	x = v0->x;
-	dy = v1->y - v0->y;
-	dx = v1->x - v0->x;
-	slope = (dx << 8) / dy;
-#ifdef GOURAUD
-	r = (v0->r << COLOR_SHIFT);
-	g = (v0->g << COLOR_SHIFT);
-	b = (v0->b << COLOR_SHIFT);
-	dr = (v1->r << COLOR_SHIFT) - r;
-	dg = (v1->g << COLOR_SHIFT) - g;
-	db = (v1->b << COLOR_SHIFT) - b;
-	rslope = (dr << 8) / dy;
-	gslope = (dg << 8) / dy;
-	bslope = (db << 8) / dy;
-#endif
-#ifdef TEXMAP
-	u = v0->u;
-	v = v0->v;
-	du = v1->u - v0->u;
-	dv = v1->v - v0->v;
-	uslope = (du << 8) / dy;
-	vslope = (dv << 8) / dy;
-#endif
-
-	start_idx = v0->y >> 8;
-	end_idx = v1->y >> 8;
-
-	for(i=start_idx; i<end_idx; i++) {
-		edge[i].x = x;
-		x += slope;
-#ifdef GOURAUD
-		/* we'll store the color in the edge tables with COLOR_SHIFT extra bits of precision */
-		edge[i].r = r;
-		edge[i].g = g;
-		edge[i].b = b;
-		r += rslope;
-		g += gslope;
-		b += bslope;
-#endif
-#ifdef TEXMAP
-		edge[i].u = u;
-		edge[i].v = v;
-		u += uslope;
-		v += vslope;
-#endif
-	}
-
-	return (uint32_t)start_idx | ((uint32_t)(end_idx - 1) << 16);
-}
-
-void POLYFILL(struct pvertex *pv, int nverts)
-{
-	int i;
-	int topidx = 0, botidx = 0, sltop = pfill_fb.height, slbot = 0;
-	struct pvertex *left, *right;
-	uint16_t color;
-	/* the following variables are used for interpolating horizontally accros scanlines */
-#if defined(GOURAUD) || defined(TEXMAP)
-	int mid;
-	int32_t dx, tmp;
-#else
-	/* flat version, just pack the color now */
-	color = PACK_RGB16(pv[0].r, pv[0].g, pv[0].b);
-#endif
-#ifdef GOURAUD
-	int32_t r, g, b, dr, dg, db, rslope, gslope, bslope;
-#endif
-#ifdef TEXMAP
-	int32_t u, v, du, dv, uslope, vslope;
-#endif
-
-	for(i=1; i<nverts; i++) {
-		if(pv[i].y < pv[topidx].y) topidx = i;
-		if(pv[i].y > pv[botidx].y) botidx = i;
-	}
-
-	left = alloca(pfill_fb.height * sizeof *left);
-	right = alloca(pfill_fb.height * sizeof *right);
-
-	for(i=0; i<nverts; i++) {
-		int next = NEXTIDX(i);
-		int32_t y0 = pv[i].y;
-		int32_t y1 = pv[next].y;
-
-		if((y0 >> 8) == (y1 >> 8)) {
-			/*if(y0 > y1) {*/
-				int i0, i1;
-				int idx = y0 >> 8;
-				if(pv[i].x < pv[next].x) {
-					i0 = i;
-					i1 = next;
-				} else {
-					i0 = next;
-					i1 = i;
-				}
-				left[idx].x = pv[i0].x;
-				right[idx].x = pv[i1].x;
-#ifdef GOURAUD
-				left[idx].r = pv[i0].r << COLOR_SHIFT;
-				left[idx].g = pv[i0].g << COLOR_SHIFT;
-				left[idx].b = pv[i0].b << COLOR_SHIFT;
-				right[idx].r = pv[i1].r << COLOR_SHIFT;
-				right[idx].g = pv[i1].g << COLOR_SHIFT;
-				right[idx].b = pv[i1].b << COLOR_SHIFT;
-#endif
-#ifdef TEXMAP
-				left[idx].u = pv[i0].u;
-				left[idx].v = pv[i0].v;
-				right[idx].u = pv[i1].u;
-				right[idx].v = pv[i1].v;
-#endif
-				if(idx > slbot) slbot = idx;
-				if(idx < sltop) sltop = idx;
-			/*}*/
-		} else {
-			struct pvertex *edge = y0 > y1 ? left : right;
-			uint32_t res = SCANEDGE(pv + i, pv + next, edge);
-			uint32_t tmp = (res >> 16) & 0xffff;
-			if(tmp > slbot) slbot = tmp;
-			if((tmp = res & 0xffff) < sltop) {
-				sltop = tmp;
-			}
-		}
-	}
-
-	/* calculate the slopes of all attributes across the largest span out
-	 * of the three: middle, top, or bottom.
-	 */
-#ifndef HIGH_QUALITY
-#if defined(GOURAUD) || defined(TEXMAP)
-	mid = (sltop + slbot) >> 1;
-	dx = right[mid].x - left[mid].x;
-	if((tmp = right[sltop].x - left[sltop].x) > dx) {
-		dx = tmp;
-		mid = sltop;
-	}
-	if((tmp = right[slbot].x - left[slbot].x) > dx) {
-		dx = tmp;
-		mid = slbot;
-	}
-	if(!dx) dx = 256;	/* avoid division by zero */
-#endif
-#ifdef GOURAUD
-	dr = right[mid].r - left[mid].r;
-	dg = right[mid].g - left[mid].g;
-	db = right[mid].b - left[mid].b;
-	rslope = (dr << 8) / dx;
-	gslope = (dg << 8) / dx;
-	bslope = (db << 8) / dx;
-#endif
-#ifdef TEXMAP
-	du = right[mid].u - left[mid].u;
-	dv = right[mid].v - left[mid].v;
-	uslope = (du << 8) / dx;
-	vslope = (dv << 8) / dx;
-#endif
-#endif	/* !defined(HIGH_QUALITY) */
-
-	/* for each scanline ... */
-	for(i=sltop; i<=slbot; i++) {
-		uint16_t *pixptr;
-		int32_t x;
-
-		x = left[i].x;
-		pixptr = pfill_fb.pixels + i * pfill_fb.width + (x >> 8);
-
-#ifdef GOURAUD
-		r = left[i].r;
-		g = left[i].g;
-		b = left[i].b;
-#endif
-#ifdef TEXMAP
-		u = left[i].u;
-		v = left[i].v;
-#endif
-
-#if defined(HIGH_QUALITY) && (defined(GOURAUD) || defined(TEXMAP))
-		if(!(dx = right[i].x - left[i].x)) dx = 256;
-
-#ifdef GOURAUD
-		dr = right[i].r - left[i].r;
-		dg = right[i].g - left[i].g;
-		db = right[i].b - left[i].b;
-		rslope = (dr << 8) / dx;
-		gslope = (dg << 8) / dx;
-		bslope = (db << 8) / dx;
-#endif
-#ifdef TEXMAP
-		du = right[i].u - left[i].u;
-		dv = right[i].v - left[i].v;
-		uslope = (du << 8) / dx;
-		vslope = (dv << 8) / dx;
-#endif
-#endif	/* HIGH_QUALITY */
-
-		/* go across the scanline interpolating if necessary */
-		while(x <= right[i].x) {
-#if defined(GOURAUD) || defined(TEXMAP)
-			int cr, cg, cb;
-#endif
-#ifdef GOURAUD
-			/* we upped the color precision to while interpolating the
-			 * edges, now drop the extra bits before packing
-			 */
-			cr = r < 0 ? 0 : (r >> COLOR_SHIFT);
-			cg = g < 0 ? 0 : (g >> COLOR_SHIFT);
-			cb = b < 0 ? 0 : (b >> COLOR_SHIFT);
-			if(cr > 255) cr = 255;
-			if(cg > 255) cg = 255;
-			if(cb > 255) cb = 255;
-			r += rslope;
-			g += gslope;
-			b += bslope;
-#endif
-#ifdef TEXMAP
-			{
-				int tx = (u >> (16 - pfill_tex.xshift)) & pfill_tex.xmask;
-				int ty = (v >> (16 - pfill_tex.yshift)) & pfill_tex.ymask;
-				uint16_t texel = pfill_tex.pixels[(ty << pfill_tex.xshift) + tx];
-#ifdef GOURAUD
-				/* This is not correct, should be /255, but it's much faster
-				 * to shift by 8 (/256), and won't make a huge difference
-				 */
-				cr = (cr * UNPACK_R16(texel)) >> 8;
-				cg = (cg * UNPACK_G16(texel)) >> 8;
-				cb = (cb * UNPACK_B16(texel)) >> 8;
-#else
-				cr = UNPACK_R16(texel);
-				cg = UNPACK_G16(texel);
-				cb = UNPACK_B16(texel);
-#endif
-			}
-			u += uslope;
-			v += vslope;
-#endif
-#if defined(GOURAUD) || defined(TEXMAP)
-			color = PACK_RGB16(cr, cg, cb);
-#endif
-
-#ifdef DEBUG_OVERDRAW
-			*pixptr++ += DEBUG_OVERDRAW;
-#else
-			*pixptr++ = color;
-#endif
-			x += 256;
-		}
-	}
-}
-