#include "screen.h"
#include "demo.h"
#include "3dgfx.h"
+#include "gfxutil.h"
struct mesh {
int prim;
static void draw_mesh(struct mesh *mesh);
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 int dump_obj(const char *fname, struct mesh *m);
static void zsort(struct mesh *m);
+static void draw_lowres_raster(void);
static struct screen scr = {
"polytest",
draw
};
+static float theta, phi = 25;
static struct mesh cube, torus;
+#define LOWRES_SCALE 10
+static uint16_t *lowres_pixels;
+static int lowres_width, lowres_height;
+
struct screen *polytest_screen(void)
{
return &scr;
{
gen_cube(&cube, 1.0);
gen_torus(&torus, 1.0, 0.25, 24, 12);
- dump_obj("torus.obj", &torus);
+
+#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);
}
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);
}
-static void draw(void)
+static void update(void)
{
static int prev_mx, prev_my;
- static float theta, phi = 25;
+ static unsigned int prev_bmask;
- int dx = mouse_x - prev_mx;
- int dy = mouse_y - prev_my;
- prev_mx = mouse_x;
- prev_my = mouse_y;
+ if(mouse_bmask) {
+ if((mouse_bmask ^ prev_bmask) == 0) {
+ int dx = mouse_x - prev_mx;
+ int dy = mouse_y - prev_my;
- if(dx || dy) {
- theta += dx * 2.0;
- phi += dy * 2.0;
+ if(dx || dy) {
+ theta += dx * 2.0;
+ phi += dy * 2.0;
- if(phi < -90) phi = -90;
- if(phi > 90) phi = 90;
+ if(phi < -90) phi = -90;
+ if(phi > 90) phi = 90;
+ }
+ }
}
+ prev_mx = mouse_x;
+ prev_my = mouse_y;
+ prev_bmask = mouse_bmask;
+}
+
- /*float angle = (float)time_msec / 50.0;*/
+static void draw(void)
+{
+ update();
memset(fb_pixels, 0, fb_width * fb_height * 2);
g3d_matrix_mode(G3D_MODELVIEW);
g3d_load_identity();
- g3d_translate(0, 0, -5);
+ g3d_translate(0, 0, -3);
g3d_rotate(phi, 1, 0, 0);
g3d_rotate(theta, 0, 1, 0);
+ g3d_light_pos(0, -10, 10, 20);
+
zsort(&torus);
+
+ g3d_mtl_diffuse(0.3, 0.6, 1.0);
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_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_mesh(struct mesh *mesh)
return 0;
}
-static int dump_obj(const char *fname, struct mesh *m)
-{
- int i, j, nfaces;
- FILE *fp;
- struct g3d_vertex *vptr;
- int16_t *iptr;
-
- if(!(fp = fopen(fname, "wb"))) {
- return -1;
- }
-
- nfaces = m->icount / m->prim;
- printf("dumping obj: %s - %d vertices / %d faces (%d indices)\n", fname,
- m->vcount, nfaces, m->icount);
-
- vptr = m->varr;
- for(i=0; i<m->vcount; i++) {
- fprintf(fp, "v %f %f %f\n", vptr->x, vptr->y, vptr->z);
- ++vptr;
- }
- vptr = m->varr;
- for(i=0; i<m->vcount; i++) {
- fprintf(fp, "vn %f %f %f\n", vptr->nx, vptr->ny, vptr->nz);
- ++vptr;
- }
- vptr = m->varr;
- for(i=0; i<m->vcount; i++) {
- fprintf(fp, "vt %f %f\n", vptr->u, vptr->v);
- ++vptr;
- }
-
- iptr = m->iarr;
- for(i=0; i<m->icount; i += m->prim) {
- fputc('f', fp);
- for(j=0; j<m->prim; j++) {
- int idx = *iptr++ + 1;
- fprintf(fp, " %d/%d/%d", idx, idx, idx);
- }
- fputc('\n', fp);
- }
-
- fclose(fp);
- return 0;
-}
static struct {
struct g3d_vertex *varr;
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;
+ }
+}