X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=dosdemo;a=blobdiff_plain;f=src%2Fpolytest.c;h=dfca5ef2a5978aeb3e52d1e3287ccdd5bc290525;hp=fb8d9afca4b408d500e5d9511732fc8715d7f83e;hb=45f6f46fe758d15aafccdb69ae837fc7d84ee466;hpb=921c229affb2b1da97d7be21d5c86ad045a6fcc3

diff --git a/src/polytest.c b/src/polytest.c
index fb8d9af..dfca5ef 100644
--- a/src/polytest.c
+++ b/src/polytest.c
@@ -1,19 +1,42 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <math.h>
 #include "screen.h"
+#include "demo.h"
+#include "3dgfx.h"
+#include "gfxutil.h"
+#include "polyfill.h"	/* just for struct pimage */
+#include "cfgopt.h"
+#include "mesh.h"
+#include "bsptree.h"
 
 static int init(void);
 static void destroy(void);
+static void start(long trans_time);
 static void draw(void);
+static void draw_lowres_raster(void);
+static int gen_texture(struct pimage *img, int xsz, int ysz);
 
 static struct screen scr = {
 	"polytest",
 	init,
 	destroy,
-	0, 0,
+	start, 0,
 	draw
 };
 
+static float cam_theta, cam_phi = 25;
+static float cam_dist = 3;
+static struct g3d_mesh cube, torus;
+static struct bsptree torus_bsp;
+
+static struct pimage tex;
+
+#define LOWRES_SCALE	10
+static uint16_t *lowres_pixels;
+static int lowres_width, lowres_height;
+
 struct screen *polytest_screen(void)
 {
 	return &scr;
@@ -21,13 +44,179 @@ struct screen *polytest_screen(void)
 
 static int init(void)
 {
+	int i;
+
+	gen_cube_mesh(&cube, 1.0, 0);
+	gen_torus_mesh(&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;
+	}
+
+	init_bsp(&torus_bsp);
+	if(bsp_add_mesh(&torus_bsp, &torus) == -1) {
+		fprintf(stderr, "failed to construct torus BSP tree\n");
+		return -1;
+	}
+
+	gen_texture(&tex, 128, 128);
+
+#ifdef DEBUG_POLYFILL
+	lowres_width = fb_width / LOWRES_SCALE;
+	lowres_height = fb_height / LOWRES_SCALE;
+	lowres_pixels = malloc(lowres_width * lowres_height * 2);
+	scr.draw = draw_debug;
+#endif
+
 	return 0;
 }
 
 static void destroy(void)
 {
+	free(lowres_pixels);
+	free(cube.varr);
+	free(torus.varr);
+	free(torus.iarr);
+	destroy_bsp(&torus_bsp);
+}
+
+static void start(long trans_time)
+{
+	g3d_matrix_mode(G3D_PROJECTION);
+	g3d_load_identity();
+	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)
+{
+	mouse_orbit_update(&cam_theta, &cam_phi, &cam_dist);
 }
 
+
 static void draw(void)
 {
+	float vdir[3];
+	float mat[16];
+
+	update();
+
+	memset(fb_pixels, 0, fb_width * fb_height * 2);
+
+	g3d_matrix_mode(G3D_MODELVIEW);
+	g3d_load_identity();
+	g3d_translate(0, 0, -cam_dist);
+	if(opt.sball) {
+		g3d_mult_matrix(sball_matrix);
+	} else {
+		g3d_rotate(cam_phi, 1, 0, 0);
+		g3d_rotate(cam_theta, 0, 1, 0);
+	}
+
+	/* calc world-space view direction */
+	g3d_get_matrix(G3D_MODELVIEW, mat);
+	/* transform (0, 0, -1) with transpose(mat3x3) */
+	vdir[0] = -mat[2];
+	vdir[1] = -mat[6];
+	vdir[2] = -mat[10];
+
+
+	g3d_light_pos(0, -10, 10, 20);
+
+	zsort_mesh(&torus);
+
+	g3d_mtl_diffuse(0.4, 0.7, 1.0);
+	g3d_set_texture(tex.width, tex.height, tex.pixels);
+
+	/*draw_mesh(&torus);*/
+	draw_bsp(&torus_bsp, vdir[0], vdir[1], vdir[2]);
+
+	/*draw_mesh(&cube);*/
+	swap_buffers(fb_pixels);
+}
+
+static void draw_debug(void)
+{
+	update();
+
+	memset(lowres_pixels, 0, lowres_width * lowres_height * 2);
+
+	g3d_matrix_mode(G3D_MODELVIEW);
+	g3d_load_identity();
+	g3d_translate(0, 0, -cam_dist);
+	g3d_rotate(cam_phi, 1, 0, 0);
+	g3d_rotate(cam_theta, 0, 1, 0);
+
+	g3d_framebuffer(lowres_width, lowres_height, lowres_pixels);
+	/*zsort(&torus);*/
+	draw_mesh(&cube);
+
+	draw_lowres_raster();
+
+
+	g3d_framebuffer(fb_width, fb_height, fb_pixels);
+
+	g3d_polygon_mode(G3D_WIRE);
+	draw_mesh(&cube);
+	g3d_polygon_mode(G3D_FLAT);
+
+	swap_buffers(fb_pixels);
+}
+
+
+static void draw_huge_pixel(uint16_t *dest, int dest_width, uint16_t color)
+{
+	int i, j;
+	uint16_t grid_color = PACK_RGB16(127, 127, 127);
+
+	for(i=0; i<LOWRES_SCALE; i++) {
+		for(j=0; j<LOWRES_SCALE; j++) {
+			dest[j] = i == 0 || j == 0 ? grid_color : color;
+		}
+		dest += dest_width;
+	}
+}
+
+static void draw_lowres_raster(void)
+{
+	int i, j;
+	uint16_t *sptr = lowres_pixels;
+	uint16_t *dptr = fb_pixels;
+
+	for(i=0; i<lowres_height; i++) {
+		for(j=0; j<lowres_width; j++) {
+			draw_huge_pixel(dptr, fb_width, *sptr++);
+			dptr += LOWRES_SCALE;
+		}
+		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;
 }