#include "screen.h"
#include "demo.h"
#include "3dgfx.h"
+#include "gfxutil.h"
+#include "polyfill.h" /* just for struct pimage */
+#include "cfgopt.h"
struct mesh {
int prim;
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",
draw
};
+static float cam_theta, cam_phi = 25;
+static float cam_dist = 3;
static struct mesh cube, torus;
+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;
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;
+ 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);
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 draw(void)
+static void update(void)
{
static int prev_mx, prev_my;
- static float theta, phi = 25;
-
- int dx = mouse_x - prev_mx;
- int dy = mouse_y - prev_my;
+ static unsigned int prev_bmask;
+
+ if(mouse_bmask) {
+ if((mouse_bmask ^ prev_bmask) == 0) {
+ int dx = mouse_x - prev_mx;
+ int dy = mouse_y - prev_my;
+
+ if(dx || dy) {
+ if(mouse_bmask & 1) {
+ cam_theta += dx * 1.0;
+ cam_phi += dy * 1.0;
+
+ if(cam_phi < -90) cam_phi = -90;
+ if(cam_phi > 90) cam_phi = 90;
+ }
+ if(mouse_bmask & 4) {
+ cam_dist += dy * 0.5;
+
+ if(cam_dist < 0) cam_dist = 0;
+ }
+ }
+ }
+ }
prev_mx = mouse_x;
prev_my = mouse_y;
+ prev_bmask = mouse_bmask;
+}
+
+
+static void draw(void)
+{
+ update();
- if(dx || dy) {
- theta += dx * 2.0;
- phi += dy * 2.0;
+ memset(fb_pixels, 0, fb_width * fb_height * 2);
- if(phi < -90) phi = -90;
- if(phi > 90) phi = 90;
+ 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);
}
- /*float angle = (float)time_msec / 50.0;*/
+ g3d_light_pos(0, -10, 10, 20);
- memset(fb_pixels, 0, fb_width * fb_height * 2);
+ 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);*/
+ 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, -3);
- g3d_rotate(phi, 1, 0, 0);
- g3d_rotate(theta, 0, 1, 0);
+ 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);
}
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;
}
qsort(m->iarr, nfaces, m->prim * sizeof *m->iarr, zsort_cmp);
}
+
+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;
+}
projects / dosdemo / blobdiff