280 lines
9.4 KiB
C
280 lines
9.4 KiB
C
#include "haloo3d/haloo3d.h"
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#include "haloo3d/haloo3dex_gen.h"
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#include "haloo3d/haloo3dex_img.h"
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#include "haloo3d/haloo3dex_obj.h"
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#include "haloo3d/haloo3dex_print.h"
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#include "resources/flower.h"
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#include <stdlib.h>
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#include <time.h>
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#define DOLIGHTING
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#define FASTTRIS
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#define WIDTH 640
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#define HEIGHT 480
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#define ASPECT ((float)WIDTH / HEIGHT)
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#define FOV 90.0
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#define NEARCLIP 0.01
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#define FARCLIP 100.0
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#define LIGHTANG -MPI / 4.0
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#define MINLIGHT 0.25
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#define SKYSCALE 30
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#define AVGWEIGHT 0.85
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// this is the number of DYNAMIC objects..
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#define NUMOBJECTS 4
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#define NUMFLOWERS 300
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#define PLANESIZE 61
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#define FLOWERIND (NUMOBJECTS - 1)
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#define NUMINSTANCES (NUMOBJECTS - 1 + NUMFLOWERS)
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#define MAXCAM 1200
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#ifdef FASTTRIS
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#define WBUFCLEAR FARCLIP
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#define TRIFUNC haloo3d_texturedtriangle_fast
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#else
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#define WBUFCLEAR 0
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#define TRIFUNC haloo3d_texturedtriangle
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#endif
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#define CALCTIME(thistime, start, end, sum) \
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float thistime = 1000.0 * (float)(end - start) / CLOCKS_PER_SEC; \
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if (sum == 0) \
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sum = thistime; \
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sum = AVGWEIGHT * sum + (1 - AVGWEIGHT) * thistime;
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typedef struct {
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mfloat_t xofs;
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mfloat_t yofs;
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mfloat_t zofs;
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mfloat_t yaw;
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mfloat_t pitch;
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} camset;
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uint16_t redflower[64] = H3D_FLOWER(0xFE55, 0xF6C4, 0xFFE0, 0xFD44, 0xF492);
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int readcam(camset *set, int max, char *filename) {
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FILE *f = fopen(filename, "r");
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if (f == NULL) {
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dieerr("Can't open %s for reading cam\n", filename);
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}
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int num = 0;
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while (5 == fscanf(f, "%f %f %f %f %f", &set[num].xofs, &set[num].yofs,
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&set[num].zofs, &set[num].yaw, &set[num].pitch)) {
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// char linebuf[1024];
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// fgets(linebuf, sizeof(linebuf), f)) {
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num++;
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if (num >= max) {
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eprintf("Camera file too big! Ignoring rest\n");
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break;
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}
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}
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fclose(f);
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printf("Read %d camlines from %s\n", num, filename);
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return num;
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}
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int main(int argc, char **argv) {
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if (argc != 4) {
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eprintf("WARN: THIS PROGRAM GENERATES A LOT OF FILES!\n");
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dieerr("You must pass in the following:\n- obj file .obj\n- texture file "
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".ppm\n- camera file (xofs yofs zofs yawdeg pitchdeg)\n");
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//- obj xofs\n- obj yofs\n- obj zofs\n- obj rotation deg\n");
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}
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// Load the junk + generate stuff
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haloo3d_obj models[NUMOBJECTS];
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haloo3d_fb textures[NUMOBJECTS];
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haloo3d_obj_loadfile(models, argv[1]);
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haloo3d_img_loadppmfile(textures, argv[2]);
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haloo3d_gen_1pxgradient(textures + 1, 0xF44F, 0xF001, 32);
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haloo3d_gen_skybox(models + 1);
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uint16_t checkcols[2] = {0xF0A0, 0xF270};
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haloo3d_gen_checkerboard(textures + 2, checkcols, 2, 32);
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haloo3d_gen_sloped(models + 2, PLANESIZE, 1.0, 1.25);
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haloo3d_fb_init_tex(textures + 3, 8, 8);
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memcpy(textures[3].buffer, redflower, sizeof(uint16_t) * 64);
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// memset(textures[3].buffer, 0xFF, sizeof(uint16_t) * 64);
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haloo3d_gen_crossquad(models + 3, textures + 3);
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camset cams[MAXCAM];
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int numcams = readcam(cams, MAXCAM, argv[3]);
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// Create the camera matrix, which DOES change. In this one,
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// we move the camera instead of the model
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haloo3d_camera camera;
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haloo3d_camera_init(&camera);
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// Create the perspective matrix, which doesn't change
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mfloat_t perspective[MAT4_SIZE];
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haloo3d_perspective(perspective, FOV, ASPECT, NEARCLIP, FARCLIP);
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// Lighting. Note that for performance, the lighting is always calculated
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// against the base model, and is thus not realistic if the object rotates in
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// the world. This can be fixed easily, since each object gets its own
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// lighting vector, which can easily be rotated in the opposite direction of
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// the model
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struct vec3 light;
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vec3(light.v, 0, -MCOS(LIGHTANG), MSIN(LIGHTANG));
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int totalfaces = 0;
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int totalverts = 0;
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haloo3d_obj_instance objects[NUMINSTANCES];
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for (int i = 0; i < NUMINSTANCES; i++) {
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if (i < FLOWERIND) {
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haloo3d_objin_init(objects + i, models + i, textures + i);
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} else { // Setup the flowers
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haloo3d_objin_init(objects + i, models + FLOWERIND, textures + FLOWERIND);
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objects[i].cullbackface = 0;
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objects[i].scale = 0.5;
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int rvi = rand() % models[2].numvertices;
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vec3_assign(objects[i].pos.v, models[2].vertices[rvi].v);
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objects[i].pos.y += 0.5;
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}
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totalfaces += objects[i].model->numfaces;
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totalverts += objects[i].model->numvertices;
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}
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#ifdef DOLIGHTING
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objects[0].lighting = &light;
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objects[2].lighting = &light;
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#endif
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// objects[0].pos.z = 0;
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// objects[0].pos.y = -10;
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// vec3(objects[2].pos.v, 0.5, 0.8, 0.5);
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objects[0].pos.y = 1;
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objects[1].scale = SKYSCALE;
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// Now we create a framebuffer to draw the triangle into
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haloo3d_fb fb;
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haloo3d_fb_init(&fb, WIDTH, HEIGHT);
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// Printing to screen needs tracking
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haloo3d_print_tracker t;
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char printbuf[8192];
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haloo3d_print_initdefault(&t, printbuf, sizeof(printbuf));
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t.fb = &fb;
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t.logprints = 1;
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// Storage stuff
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mfloat_t matrix3d[MAT4_SIZE], matrixcam[MAT4_SIZE], matrixscreen[MAT4_SIZE],
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matrixmodel[MAT4_SIZE];
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haloo3d_facef outfaces[H3D_FACEF_MAXCLIP];
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struct vec3 tmp1;
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haloo3d_facef face, baseface;
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struct vec4 *vert_precalc;
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mallocordie(vert_precalc, sizeof(struct vec4) * H3D_OBJ_MAXVERTICES);
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char fname[1024];
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// float sumverts = 0, sumdraw = 0, sumframe = 0, suminit = 0, sumclip = 0;
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// clock_t begin, end, vertend, drawend, initend, clipend, tempstart, tempend;
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clock_t begin, end;
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float sumframe = 0;
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// float sumframe = 0;
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// clock_t begin, end;
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int totaldrawn = 0;
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eprintf("Scene has %d tris, %d verts\n", totalfaces, totalverts);
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// -----------------------------------
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// Actual rendering
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// -----------------------------------
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for (int cami = 0; cami < numcams; cami++) {
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begin = clock();
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// vertend = begin;
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// drawend = begin;
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// clipend = begin;
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totaldrawn = 0;
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haloo3d_print_refresh(&t);
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camera.pos.x = cams[cami].xofs;
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camera.pos.y = cams[cami].yofs;
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camera.pos.z = cams[cami].zofs;
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camera.yaw = cams[cami].yaw;
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camera.pitch = cams[cami].pitch + MPI_2;
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// REMEMBER TO CLEAR DEPTH BUFFER
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haloo3d_fb_cleardepth(&fb, WBUFCLEAR);
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// memset(fb.buffer, 0xFF, sizeof(uint16_t) * fb.width * fb.height);
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// Screen matrix calc. We multiply the modelview matrix with this later
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haloo3d_camera_calclook(&camera, matrixcam);
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mat4_inverse(matrixcam, matrixcam);
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mat4_multiply(matrixscreen, perspective, matrixcam);
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// initend = clock();
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// Iterate over objects
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for (int i = 0; i < NUMINSTANCES; i++) {
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// tempstart = clock();
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// Setup final model matrix and the precalced vertices
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vec3_add(tmp1.v, objects[i].pos.v, objects[i].lookvec.v);
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haloo3d_my_lookat(matrixmodel, objects[i].pos.v, tmp1.v, camera.up.v);
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haloo3d_mat4_scale(matrixmodel, objects[i].scale);
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mat4_multiply(matrix3d, matrixscreen, matrixmodel);
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haloo3d_precalc_verts(objects[i].model, matrix3d, vert_precalc);
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// tempend = clock();
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// vertend += (tempend - tempstart);
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// Iterate over object faces
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for (int fi = 0; fi < objects[i].model->numfaces; fi++) {
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// Copy face values out of precalc array and clip them
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haloo3d_make_facef(objects[i].model->faces[fi], vert_precalc,
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objects[i].model->vtexture, face);
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// tempstart = clock();
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int tris = haloo3d_facef_clip(face, outfaces);
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// tempend = clock();
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// clipend += (tempend - tempstart);
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// tempstart = tempend;
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for (int ti = 0; ti < tris; ti++) {
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int backface = !haloo3d_facef_finalize(outfaces[ti]);
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if (objects[i].cullbackface && backface) {
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continue;
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}
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totaldrawn++;
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mfloat_t intensity = 1.0;
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if (objects[i].lighting) {
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haloo3d_obj_facef(objects[i].model, objects[i].model->faces[fi],
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baseface);
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intensity =
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haloo3d_calc_light(objects[i].lighting->v, MINLIGHT, baseface);
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}
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// We still have to convert the points into the view
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haloo3d_facef_viewport_into(outfaces[ti], WIDTH, HEIGHT);
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TRIFUNC(&fb, objects[i].texture, intensity, outfaces[ti]);
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}
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// tempend = clock();
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// drawend += (tempend - tempstart);
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}
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}
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end = clock();
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// CALCTIME(thisinittime, begin, initend, suminit);
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// CALCTIME(thisverttime, begin, vertend, sumverts);
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// CALCTIME(thiscliptime, begin, clipend, sumclip);
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// CALCTIME(thisdrawtime, begin, drawend, sumdraw);
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CALCTIME(thisframetime, begin, end, sumframe);
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// haloo3d_print(&t,
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// "Init work: %.2f (%.2f)\nVert calc: %.2f (%.2f)\n Clip:
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// "
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// "%.2f (%.2f)\n Draw: %.2f"
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// " (%.2f)\n Frame: %.2f (%.2f)\nTris: %d / %d\nVerts:
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// %d\n", thisinittime, suminit, thisverttime, sumverts,
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// thiscliptime, sumclip, thisdrawtime, sumdraw,
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// thisframetime, sumframe, totaldrawn, totalfaces,
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// totalverts);
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haloo3d_print(&t, "Frame: %.2f (%.2f)\nTris: %d / %d\nVerts: %d\n",
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thisframetime, sumframe, totaldrawn, totalfaces, totalverts);
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sprintf(fname, "scene_%04d.ppm", cami);
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haloo3d_img_writeppmfile(&fb, fname);
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}
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for (int i = 0; i < NUMOBJECTS; i++) {
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haloo3d_obj_free(models + i);
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haloo3d_fb_free(textures + i);
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}
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}
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