X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fpolytest.c;h=0d5187d868cdb58b5a9a762062341a1410118cca;hp=826b0b0c5a5439a8a2df57f7d65d0ddf4bef53e7;hb=9e546fcbdc870e396abeb6eaacaa7bc4054a61f0;hpb=dce48eb322ddf2a3c3622fc132ece21ba7653da3

diff --git a/src/polytest.c b/src/polytest.c
index 826b0b0..0d5187d 100644
--- a/src/polytest.c
+++ b/src/polytest.c
@@ -6,6 +6,7 @@
 #include "demo.h"
 #include "3dgfx.h"
 #include "gfxutil.h"
+#include "polyfill.h"	/* just for struct pimage */
 
 struct mesh {
 	int prim;
@@ -23,6 +24,7 @@ static int gen_cube(struct mesh *mesh, float sz);
 static int gen_torus(struct mesh *mesh, float rad, float ringrad, int usub, int vsub);
 static void zsort(struct mesh *m);
 static void draw_lowres_raster(void);
+static int gen_texture(struct pimage *img, int xsz, int ysz);
 
 static struct screen scr = {
 	"polytest",
@@ -35,6 +37,8 @@ static struct screen scr = {
 static float theta, phi = 25;
 static struct mesh cube, torus;
 
+static struct pimage tex;
+
 #define LOWRES_SCALE	10
 static uint16_t *lowres_pixels;
 static int lowres_width, lowres_height;
@@ -46,8 +50,17 @@ struct screen *polytest_screen(void)
 
 static int init(void)
 {
+	int i;
+
 	gen_cube(&cube, 1.0);
 	gen_torus(&torus, 1.0, 0.25, 24, 12);
+	/* scale texcoords */
+	for(i=0; i<torus.vcount; i++) {
+		torus.varr[i].u *= 4.0;
+		torus.varr[i].v *= 2.0;
+	}
+
+	gen_texture(&tex, 128, 128);
 
 #ifdef DEBUG_POLYFILL
 	lowres_width = fb_width / LOWRES_SCALE;
@@ -74,6 +87,10 @@ static void start(long trans_time)
 	g3d_perspective(50.0, 1.3333333, 0.5, 100.0);
 
 	g3d_enable(G3D_CULL_FACE);
+	g3d_enable(G3D_LIGHTING);
+	g3d_enable(G3D_LIGHT0);
+
+	g3d_polygon_mode(G3D_TEX_GOURAUD);
 }
 
 static void update(void)
@@ -87,8 +104,8 @@ static void update(void)
 			int dy = mouse_y - prev_my;
 
 			if(dx || dy) {
-				theta += dx * 2.0;
-				phi += dy * 2.0;
+				theta += dx * 1.0;
+				phi += dy * 1.0;
 
 				if(phi < -90) phi = -90;
 				if(phi > 90) phi = 90;
@@ -113,7 +130,13 @@ static void draw(void)
 	g3d_rotate(phi, 1, 0, 0);
 	g3d_rotate(theta, 0, 1, 0);
 
+	g3d_light_pos(0, -10, 10, 20);
+
 	zsort(&torus);
+
+	g3d_mtl_diffuse(0.4, 0.7, 1.0);
+	g3d_set_texture(tex.width, tex.height, tex.pixels);
+
 	draw_mesh(&torus);
 
 	/*draw_mesh(&cube);*/
@@ -260,6 +283,8 @@ static int gen_torus(struct mesh *mesh, float rad, float ringrad, int usub, int
 	nfaces = usub * vsub;
 	mesh->icount = nfaces * 4;
 
+	printf("generating torus with %d faces (%d vertices)\n", nfaces, mesh->vcount);
+
 	if(!(mesh->varr = malloc(mesh->vcount * sizeof *mesh->varr))) {
 		return -1;
 	}
@@ -370,3 +395,26 @@ static void draw_lowres_raster(void)
 		dptr += fb_width * LOWRES_SCALE - fb_width;
 	}
 }
+
+static int gen_texture(struct pimage *img, int xsz, int ysz)
+{
+	int i, j;
+	uint16_t *pix;
+
+	if(!(img->pixels = malloc(xsz * ysz * sizeof *pix))) {
+		return -1;
+	}
+	pix = img->pixels;
+
+	for(i=0; i<ysz; i++) {
+		for(j=0; j<xsz; j++) {
+			int val = i ^ j;
+
+			*pix++ = PACK_RGB16(val, val, val);
+		}
+	}
+
+	img->width = xsz;
+	img->height = ysz;
+	return 0;
+}