istereo

annotate src/istereo.c @ 18:6851489e70c2

find changesets by author, revision, files, or words in the commit message
timing?
author John Tsiombikas <nuclear@mutantstargoat.com>
date Wed, 07 Sep 2011 09:53:01 +0300
parents 4c20f10a7183
children ab4972098eb7
rev   line source
nuclear@2 1 #include <stdio.h>
nuclear@18 2 #include <math.h>
nuclear@2 3 #include <assert.h>
nuclear@3 4 #include <unistd.h>
nuclear@1 5 #include "opengl.h"
nuclear@0 6 #include "istereo.h"
nuclear@2 7 #include "sanegl.h"
nuclear@2 8 #include "sdr.h"
nuclear@4 9 #include "respath.h"
nuclear@14 10 #include "tex.h"
nuclear@18 11 #include "config.h"
nuclear@4 12
nuclear@4 13 static unsigned int get_shader_program(const char *vfile, const char *pfile);
nuclear@18 14 static float get_sec(void);
nuclear@2 15
nuclear@2 16 unsigned int prog;
nuclear@14 17 unsigned int tex;
nuclear@0 18
nuclear@18 19 int stereo;
nuclear@18 20
nuclear@18 21 /* construction parameters */
nuclear@18 22 int sides = 24;
nuclear@18 23 int segm = 20;
nuclear@18 24 float ring_height = 0.5;
nuclear@18 25
nuclear@18 26
nuclear@0 27 int init(void)
nuclear@0 28 {
nuclear@4 29 add_resource_path("sdr");
nuclear@14 30 add_resource_path("data");
nuclear@3 31
nuclear@4 32 if(!(prog = get_shader_program("test.v.glsl", "test.p.glsl"))) {
nuclear@2 33 fprintf(stderr, "failed to load shader program\n");
nuclear@2 34 return -1;
nuclear@2 35 }
nuclear@14 36
nuclear@14 37 if(!(tex = load_texture(find_resource("tiles.ppm", 0, 0)))) {
nuclear@14 38 fprintf(stderr, "failed to load texture\n");
nuclear@14 39 return -1;
nuclear@14 40 }
nuclear@14 41
nuclear@0 42 return 0;
nuclear@0 43 }
nuclear@0 44
nuclear@0 45 void cleanup(void)
nuclear@0 46 {
nuclear@2 47 free_program(prog);
nuclear@0 48 }
nuclear@0 49
nuclear@0 50 void redraw(void)
nuclear@0 51 {
nuclear@18 52 float t = get_sec();
nuclear@18 53
nuclear@5 54 glClearColor(0.4, 0.6, 1.0, 1.0);
nuclear@0 55 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@2 56
nuclear@2 57 bind_program(prog);
nuclear@2 58
nuclear@13 59 gl_matrix_mode(GL_MODELVIEW);
nuclear@2 60 gl_load_identity();
nuclear@13 61 gl_translatef(0, 0, -8);
nuclear@18 62 gl_rotatef(t * 100.0, 0, 0, 1);
nuclear@2 63
nuclear@16 64 bind_texture(tex, 0);
nuclear@17 65 set_uniform_int(prog, "tex", 0);
nuclear@6 66
nuclear@13 67 gl_begin(GL_QUADS);
nuclear@14 68 gl_texcoord2f(0, 0);
nuclear@2 69 gl_color3f(1, 0, 0);
nuclear@2 70 gl_vertex3f(-1, -1, 0);
nuclear@14 71 gl_texcoord2f(1, 0);
nuclear@2 72 gl_color3f(0, 1, 0);
nuclear@2 73 gl_vertex3f(1, -1, 0);
nuclear@14 74 gl_texcoord2f(1, 1);
nuclear@2 75 gl_color3f(0, 0, 1);
nuclear@2 76 gl_vertex3f(1, 1, 0);
nuclear@14 77 gl_texcoord2f(0, 1);
nuclear@2 78 gl_color3f(1, 1, 0);
nuclear@2 79 gl_vertex3f(-1, 1, 0);
nuclear@13 80 gl_end();
nuclear@2 81
nuclear@16 82 bind_texture(0, 0);
nuclear@14 83
nuclear@2 84 assert(glGetError() == GL_NO_ERROR);
nuclear@0 85 }
nuclear@2 86
nuclear@2 87 void reshape(int x, int y)
nuclear@2 88 {
nuclear@2 89 glViewport(0, 0, x, y);
nuclear@2 90
nuclear@2 91 gl_matrix_mode(GL_PROJECTION);
nuclear@2 92 gl_load_identity();
nuclear@2 93 glu_perspective(45.0, (float)x / (float)y, 1.0, 1000.0);
nuclear@2 94 }
nuclear@4 95
nuclear@4 96 static unsigned int get_shader_program(const char *vfile, const char *pfile)
nuclear@4 97 {
nuclear@4 98 unsigned int prog, vs, ps;
nuclear@4 99
nuclear@4 100 if(!(vs = get_vertex_shader(find_resource(vfile, 0, 0)))) {
nuclear@4 101 return -1;
nuclear@4 102 }
nuclear@4 103 if(!(ps = get_pixel_shader(find_resource(pfile, 0, 0)))) {
nuclear@4 104 return -1;
nuclear@4 105 }
nuclear@4 106
nuclear@4 107 if(!(prog = create_program_link(vs, ps))) {
nuclear@4 108 return -1;
nuclear@4 109 }
nuclear@4 110 return prog;
nuclear@4 111 }
nuclear@18 112
nuclear@18 113
nuclear@18 114 #ifdef IPHONE
nuclear@18 115 #include <QuartzCore/QuartzCore.h>
nuclear@18 116
nuclear@18 117 static float get_sec(void)
nuclear@18 118 {
nuclear@18 119 static float first;
nuclear@18 120 static int init;
nuclear@18 121
nuclear@18 122 if(!init) {
nuclear@18 123 init = 1;
nuclear@18 124 first = CACurrentMediaTime();
nuclear@18 125 return 0.0f;
nuclear@18 126 }
nuclear@18 127 return CACurrentMediaTime() - first;
nuclear@18 128 }
nuclear@18 129
nuclear@18 130 #else
nuclear@18 131
nuclear@18 132 static float get_sec(void)
nuclear@18 133 {
nuclear@18 134 return (float)glutGet(GLUT_ELAPSED_TIME) / 1000.0f;
nuclear@18 135 }
nuclear@18 136 #endif