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c9e78fd810
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381 changed files with 37141 additions and 0 deletions
215
lighting.h
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215
lighting.h
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/*
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void light_set_shader(light_t *light, uint id) {
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int pos;
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char str[32];
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pos = sprintf(str, "lights[%d].", id);
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sprintf(str+pos, "position");
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shd_vec3(str, light->pos);
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sprintf(str+pos, "ambient");
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shd_vec3(str, light->ambient);
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sprintf(str+pos, "diffuse");
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shd_vec3(str, light->diffuse);
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sprintf(str+pos, "specular");
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shd_vec3(str, light->specular);
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sprintf(str+pos, "range");
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shd_vec3(str, light->range);
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sprintf(str+pos, "constant");
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shd_float(str, light->constant);
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sprintf(str+pos, "linear");
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shd_float(str, light->linear);
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sprintf(str+pos, "quadratic");
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shd_float(str, light->quadratic);
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sprintf(str+pos, "enabled");
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shd_bool(str, 1);
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}
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void light_unset_shader(uint id) {
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char str[32];
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sprintf(str, "lights[%d].enabled", id);
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shd_bool(str, 0);
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}
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*/
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void light_calc(world_t *world) {
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int x1 = ((int)world->camera.pos_x) / CHUNK_SIZE;
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int y1 = ((int)world->camera.pos_y) / CHUNK_SIZE;
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int z1 = ((int)world->camera.pos_z) / CHUNK_SIZE;
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int x2 = x1 + gdr.light_dist_chunk;
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int y2 = y1 + gdr.light_dist_chunk;
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int z2 = z1 + gdr.light_dist_chunk;
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ulong pos;
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chunk_t *chunk;
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light_t *light;
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x1 -= gdr.light_dist_chunk;
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y1 -= gdr.light_dist_chunk;
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z1 -= gdr.light_dist_chunk;
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// x1 = CHUNK_CLAMP(world, x1, x);
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// y1 = CHUNK_CLAMP(world, y1, y);
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// z1 = CHUNK_CLAMP(world, z1, z);
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// x2 = CHUNK_CLAMP(world, x2, x);
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// y2 = CHUNK_CLAMP(world, y2, y);
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// z2 = CHUNK_CLAMP(world, z2, z);
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// glBufferData(GL_UNIFORM_BUFFER, sizeof(float) * 18 * gdr.light_max, NULL, GL_DYNAMIC_DRAW);
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// memset(world->lights, 0, sizeof(light_t) * gdr.light_max);
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world->s_lights = 0;
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if(!gdr.light_max)
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return;
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glBindBuffer(GL_UNIFORM_BUFFER, world->light_buf);
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for(int cx = x1; cx <= x2; cx++) {
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for(int cz = z1; cz <= z2; cz++) {
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for(int cy = y1; cy <= y2; cy++) {
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if(!(chunk = chunk_get(world, cx, cy, cz, 0)))
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continue;
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pos = 0;
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while(light = tbl_iter(&chunk->light_table, &pos)) {
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// if(nndist) {
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// if(light_add(world, light) == 0xffffffff)
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// return;
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glBufferSubData(GL_UNIFORM_BUFFER, LIGHT_SSIZE * world->s_lights, LIGHT_SSIZE, light);
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// memcpy(&world->lights[world->s_lights], light, sizeof(shdlight_t));
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if((world->s_lights += 1) >= gdr.light_max) {
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glBindBuffer(GL_UNIFORM_BUFFER, 0);
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return;
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}
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// }
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}
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}
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}
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}
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glBindBuffer(GL_UNIFORM_BUFFER, 0);
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}
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/*
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uint light_add(float x, float y, float z, uint color) {
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light_t *light;
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uint id;
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if(!(world->lights))
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return 0xffffffff;
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if((id = lst_push(&world->light_list)) == 0xffffffff)
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return 0xffffffff;
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light = &world->lights[id];
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light_init_def(light, x, y, z, color);
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shd_sel(gdr.shd_world, 0);
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light_set_shader(light, id);
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world->s_lights += 1;
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shd_int("n_lights", world->s_lights);
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logd("TST", "l %d @ %.3f %.3f %.3f: %06x, %.1f %.1f %.1f", id, x, y, z, color, light->diffuse[0], light->diffuse[1], light->diffuse[2]);
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return id;
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}
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*/
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// void light_remove(world_t *world, uint id) {
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// lst_pop(&world->light_list, id);
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// shd_sel(gdr.shd_world, world);
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// glBindBuffer(GL_UNIFORM_BUFFER, world->light_buf);
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// light_unset_shader(id);
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// world->s_lights -= 1;
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// shd_int("n_lights", world->s_lights);
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// }
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// void light_refresh() {
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// if(world->world)
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// light_calc(world->world);
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// /*
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// for(int z = 0; z < gdr.light_max; z++) {
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// light_add(((float)(rand() % 20000)) / 100.0f - 100.0f, 1.0f, ((float)(rand() % 20000)) / 100.0f - 100.0f, (rand() % 0xffffff) | 0x404040);
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// }
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// */
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// }
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// void light_end(world_t *world) {
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// if(world->lights) {
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// mem_free(world->lights);
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// world->lights = NULL;
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// }
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// }
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// void light_init(world_t *world) {
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// light_end(world);
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// if(gdr.light_max)
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// world->lights = mem_alloc(sizeof(light_t) * gdr.light_max, MEM_LIGHTS);
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// light_calc(world);
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// }
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void light_setup(int max) {
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window_t *win;
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gdr.light_max = max;
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shd_refresh();
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for(win = wcf.window_list; win; win = win->next) {
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if(win->world) {
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glNamedBufferData(win->world->light_buf, LIGHT_SSIZE * gdr.light_max, NULL, GL_DYNAMIC_DRAW);
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light_calc(win->world);
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}
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}
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}
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/*
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void light_map_fill(const float *polys, int n_polys, uint color, float fog) {
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buf_data(gdr.buf_lightmap, polys, n_polys * 3);
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glBindVertexArray(gdr.vao_lightmap);
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shd_sel(gdr.shd_lightmap, 1);
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shd_vec2v("size", (float)(TEMP_LM_SIZE * CHUNK_SIZE), (float)(TEMP_LM_SIZE * CHUNK_SIZE));
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shd_scolor("color", color);
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shd_float("fog", fog);
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glBindFramebuffer(GL_FRAMEBUFFER, gdr.fb_lightmap);
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glViewport(0, 0, TEMP_LM_SIZE * CHUNK_SIZE, TEMP_LM_SIZE * CHUNK_SIZE);
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glDisable(GL_DEPTH_TEST);
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glDisable(GL_BLEND);
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glDrawArrays(GL_TRIANGLES, 0, n_polys * 3);
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glEnable(GL_BLEND);
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glViewport(0, 0, wcf.current->fb_x, wcf.current->fb_y);
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buf_data(gdr.buf_lightmap, NULL, 0);
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}
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void light_map_rect(int x1, int z1, int x2, int z2, uint color, float fog) {
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x2 -= x1;
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z2 -= z1;
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x1 += (CHUNK_SIZE * (TEMP_LM_SIZE / 2));
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z1 += (CHUNK_SIZE * (TEMP_LM_SIZE / 2));
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glBindFramebuffer(GL_FRAMEBUFFER, gdr.fb_lightmap);
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glClearColor(
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(float)((uint)((color >> 16) & 0xff)) / 255.0f,
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(float)((uint)((color >> 8) & 0xff)) / 255.0f,
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(float)((uint)(color & 0xff)) / 255.0f,
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fog);
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glViewport(0, 0, TEMP_LM_SIZE * CHUNK_SIZE, TEMP_LM_SIZE * CHUNK_SIZE);
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glScissor(x1, z1, x2, z2);
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// logd(LOG_SYS, "n %d %d %d %d", x1, z1, x2, z2);
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glEnable(GL_SCISSOR_TEST);
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glClear(GL_COLOR_BUFFER_BIT);
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glDisable(GL_SCISSOR_TEST);
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glViewport(0, 0, wcf.current->fb_x, wcf.current->fb_y);
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}
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void light_map_clear() {
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fb_size(gdr.fbt_lightmap, TEMP_LM_SIZE * CHUNK_SIZE, TEMP_LM_SIZE * CHUNK_SIZE);
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glBindFramebuffer(GL_FRAMEBUFFER, gdr.fb_lightmap);
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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}
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*/
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void light_init_base(light_t *light, light_b *lamp) {
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float r = (float)((uint)((lamp->color >> 16) & 0xff)) / 255.0f;
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float g = (float)((uint)((lamp->color >> 8) & 0xff)) / 255.0f;
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float b = (float)((uint)(lamp->color & 0xff)) / 255.0f;
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VEC3_SET(light->ambient, r * lamp->amb_fact, g * lamp->amb_fact, b * lamp->amb_fact);
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VEC3_SET(light->diffuse, r * lamp->dif_fact, g * lamp->dif_fact, b * lamp->dif_fact);
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VEC3_SET(light->specular, r, g, b);
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VEC3_SET(light->range, lamp->range_xz, lamp->range_y, lamp->range_xz);
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light->constant = lamp->constant;
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light->linear = lamp->linear;
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light->quadratic = lamp->quadratic;
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}
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void light_init_def(light_b *light, uint color, float brightness) {
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light->color = color;
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light->amb_fact = brightness;
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light->dif_fact = MIN_VALUE(brightness * 16.0f, 1.0f);
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light->range_xz = 1.0f;
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light->range_y = 1.0f;
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light->constant = 1.0f;
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light->linear = 0.09f;
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light->quadratic = 0.032f;
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}
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