rayzor

annotate src/renderer.cc @ 15:be616b58df99

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continued the renderer slightly
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 13 Apr 2014 09:54:36 +0300
parents a9a948809c6f
children 79609d482762
rev   line source
nuclear@14 1 #include <string.h>
nuclear@9 2 #include "renderer.h"
nuclear@14 3 #include "rayzor.h"
nuclear@15 4 #include "scene.h"
nuclear@14 5 #include "keyb.h"
nuclear@14 6 #include "scrman.h"
nuclear@15 7 #include "timer.h"
nuclear@15 8 #include "logger.h"
nuclear@14 9
nuclear@14 10 struct RendererImpl {
nuclear@14 11 bool in_progress;
nuclear@14 12 int cur_x, cur_y; // current pixel being rendered
nuclear@15 13
nuclear@15 14 uint32_t *pixels;
nuclear@15 15
nuclear@15 16 MsgAtom msg_start;
nuclear@14 17 };
nuclear@9 18
nuclear@15 19
nuclear@15 20 static Vector3 ray_trace(const Ray &ray, int iter = 0);
nuclear@15 21 static Vector3 shade(const Ray &ray, float t, int iter);
nuclear@15 22
nuclear@15 23
nuclear@9 24 Renderer::Renderer()
nuclear@9 25 {
nuclear@9 26 set_name("renderer");
nuclear@9 27 }
nuclear@9 28
nuclear@14 29 bool Renderer::init()
nuclear@14 30 {
nuclear@14 31 rend = new RendererImpl;
nuclear@14 32 memset(rend, 0, sizeof *rend);
nuclear@15 33
nuclear@15 34 rend->pixels = new uint32_t[fb_width * fb_height];
nuclear@15 35 if(!rend->pixels) {
nuclear@15 36 return false;
nuclear@15 37 }
nuclear@15 38 memset(rend->pixels, 0, fb_width * fb_height * 4);
nuclear@15 39
nuclear@15 40 rend->msg_start = message_atom("start");
nuclear@15 41
nuclear@14 42 return true;
nuclear@14 43 }
nuclear@14 44
nuclear@14 45 void Renderer::shutdown()
nuclear@14 46 {
nuclear@14 47 if(rend) {
nuclear@15 48 delete [] rend->pixels;
nuclear@14 49 delete rend;
nuclear@14 50 rend = 0;
nuclear@14 51 }
nuclear@14 52 }
nuclear@14 53
nuclear@9 54 void Renderer::draw() const
nuclear@9 55 {
nuclear@15 56 Camera *cam = scene->get_active_camera();
nuclear@15 57
nuclear@15 58 // if a rendering is not in progress, just show the last buffer
nuclear@15 59 if(!rend->in_progress || !cam) {
nuclear@15 60 memcpy(fb_pixels, rend->pixels, fb_width * fb_height * 4);
nuclear@15 61 return;
nuclear@15 62 }
nuclear@15 63
nuclear@15 64 // render for approximately half a second, then show and return
nuclear@15 65 unsigned long start = get_msec();
nuclear@15 66 uint32_t *dest = rend->pixels + rend->cur_y * fb_width + rend->cur_x;
nuclear@15 67
nuclear@15 68 for(;;) {
nuclear@15 69 Ray ray = cam->get_primary_ray(rend->cur_x, rend->cur_y);
nuclear@15 70 Vector3 color = ray_trace(ray);
nuclear@15 71
nuclear@15 72 int r = color.x > 1.0 ? 255 : (int)(color.x * 255.0);
nuclear@15 73 int g = color.y > 1.0 ? 255 : (int)(color.y * 255.0);
nuclear@15 74 int b = color.z > 1.0 ? 255 : (int)(color.z * 255.0);
nuclear@15 75
nuclear@15 76 *dest++ = (r << 16) | (g << 8) | b;
nuclear@15 77
nuclear@15 78 if(++rend->cur_x >= fb_width) {
nuclear@15 79 rend->cur_x = 0;
nuclear@15 80 if(++rend->cur_y >= fb_height) {
nuclear@15 81 rend->in_progress = false;
nuclear@15 82 printlog("done!\n");
nuclear@15 83 break;
nuclear@15 84 }
nuclear@15 85 }
nuclear@15 86
nuclear@15 87 if(get_msec() - start >= 500) {
nuclear@15 88 break;
nuclear@15 89 }
nuclear@15 90 }
nuclear@15 91
nuclear@15 92 memcpy(fb_pixels, rend->pixels, fb_width * fb_height * 4);
nuclear@9 93 }
nuclear@14 94
nuclear@14 95 void Renderer::handle_keyboard(int key, bool press)
nuclear@14 96 {
nuclear@14 97 switch(key) {
nuclear@14 98 case KB_ESC:
nuclear@14 99 deactivate_screen();
nuclear@14 100 break;
nuclear@14 101
nuclear@15 102 default:
nuclear@15 103 break;
nuclear@14 104 }
nuclear@14 105 }
nuclear@15 106
nuclear@15 107 void Renderer::message(MsgAtom msg)
nuclear@15 108 {
nuclear@15 109 if(msg == rend->msg_start) {
nuclear@15 110 rend->cur_x = rend->cur_y = 0;
nuclear@15 111 rend->in_progress = true;
nuclear@15 112 memset(rend->pixels, 0, fb_width * fb_height * 4);
nuclear@15 113
nuclear@15 114 printlog("starting a new rendering!\n");
nuclear@15 115 }
nuclear@15 116 }
nuclear@15 117
nuclear@15 118
nuclear@15 119 static Vector3 ray_trace(const Ray &ray, int iter)
nuclear@15 120 {
nuclear@15 121 return shade(ray, 0, iter);
nuclear@15 122 }
nuclear@15 123
nuclear@15 124 static Vector3 shade(const Ray &ray, float t, int iter)
nuclear@15 125 {
nuclear@15 126 return Vector3(1.0, 0.0, 0.0);
nuclear@15 127 }