+++ /dev/null
-#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 void keypress(int key);
-static int gen_texture(struct pimage *img, int xsz, int ysz);
-
-static struct screen scr = {
- "polytest",
- init,
- destroy,
- start, 0,
- draw,
- keypress
-};
-
-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;
-
-static int use_bsp = 0;
-
-#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_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_GOURAUD);
- g3d_enable(G3D_TEXTURE_2D);
-}
-
-static void update(void)
-{
- mouse_orbit_update(&cam_theta, &cam_phi, &cam_dist);
-}
-
-
-static void draw(void)
-{
- float vdir[3];
- const float *mat;
-
- 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);
- }
-
- g3d_light_pos(0, -10, 10, 20);
-
- g3d_mtl_diffuse(0.4, 0.7, 1.0);
- g3d_set_texture(tex.width, tex.height, tex.pixels);
-
- if(use_bsp) {
- /* calc world-space view direction */
- mat = g3d_get_matrix(G3D_MODELVIEW, 0);
- /* transform (0, 0, -1) with transpose(mat3x3) */
- vdir[0] = -mat[2];
- vdir[1] = -mat[6];
- vdir[2] = -mat[10];
-
- draw_bsp(&torus_bsp, vdir[0], vdir[1], vdir[2]);
- } else {
- zsort_mesh(&torus);
- 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, -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 void keypress(int key)
-{
- switch(key) {
- case 'b':
- use_bsp = !use_bsp;
- printf("drawing with %s\n", use_bsp ? "BSP tree" : "z-sorting");
- break;
- }
-}
-
-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