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nuclear@2
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1 #include <stdio.h>
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nuclear@2
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2 #include <assert.h>
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nuclear@3
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3 #include <unistd.h>
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nuclear@1
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4 #include "opengl.h"
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nuclear@0
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5 #include "istereo.h"
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nuclear@2
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6 #include "sanegl.h"
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nuclear@2
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7 #include "sdr.h"
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nuclear@4
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8 #include "respath.h"
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nuclear@14
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9 #include "tex.h"
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nuclear@4
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10
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nuclear@4
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11 static unsigned int get_shader_program(const char *vfile, const char *pfile);
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nuclear@2
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12
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nuclear@2
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13 unsigned int prog;
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nuclear@14
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14 unsigned int tex;
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nuclear@0
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15
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nuclear@0
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16 int init(void)
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nuclear@0
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17 {
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nuclear@4
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18 add_resource_path("sdr");
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nuclear@14
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19 add_resource_path("data");
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nuclear@3
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20
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nuclear@4
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21 if(!(prog = get_shader_program("test.v.glsl", "test.p.glsl"))) {
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nuclear@2
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22 fprintf(stderr, "failed to load shader program\n");
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nuclear@2
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23 return -1;
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nuclear@2
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24 }
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nuclear@14
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25
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nuclear@14
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26 if(!(tex = load_texture(find_resource("tiles.ppm", 0, 0)))) {
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nuclear@14
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27 fprintf(stderr, "failed to load texture\n");
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nuclear@14
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28 return -1;
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nuclear@14
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29 }
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nuclear@14
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30
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nuclear@0
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31 return 0;
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nuclear@0
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32 }
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nuclear@0
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33
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nuclear@0
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34 void cleanup(void)
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nuclear@0
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35 {
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nuclear@2
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36 free_program(prog);
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nuclear@0
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37 }
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nuclear@0
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38
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nuclear@0
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39 void redraw(void)
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nuclear@0
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40 {
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nuclear@5
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41 glClearColor(0.4, 0.6, 1.0, 1.0);
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nuclear@0
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42 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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nuclear@2
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43
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nuclear@2
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44 bind_program(prog);
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nuclear@2
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45
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nuclear@13
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46 gl_matrix_mode(GL_MODELVIEW);
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nuclear@2
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47 gl_load_identity();
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nuclear@13
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48 gl_translatef(0, 0, -8);
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nuclear@2
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49
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nuclear@16
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50 bind_texture(tex, 0);
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nuclear@17
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51 set_uniform_int(prog, "tex", 0);
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nuclear@6
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52
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nuclear@13
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53 gl_begin(GL_QUADS);
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nuclear@14
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54 gl_texcoord2f(0, 0);
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nuclear@2
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55 gl_color3f(1, 0, 0);
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nuclear@2
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56 gl_vertex3f(-1, -1, 0);
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nuclear@14
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57 gl_texcoord2f(1, 0);
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nuclear@2
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58 gl_color3f(0, 1, 0);
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nuclear@2
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59 gl_vertex3f(1, -1, 0);
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nuclear@14
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60 gl_texcoord2f(1, 1);
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nuclear@2
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61 gl_color3f(0, 0, 1);
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nuclear@2
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62 gl_vertex3f(1, 1, 0);
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nuclear@14
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63 gl_texcoord2f(0, 1);
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nuclear@2
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64 gl_color3f(1, 1, 0);
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nuclear@2
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65 gl_vertex3f(-1, 1, 0);
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nuclear@13
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66 gl_end();
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nuclear@2
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67
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nuclear@16
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68 bind_texture(0, 0);
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nuclear@14
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69
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nuclear@2
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70 assert(glGetError() == GL_NO_ERROR);
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nuclear@0
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71 }
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nuclear@2
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72
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nuclear@2
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73 void reshape(int x, int y)
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nuclear@2
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74 {
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nuclear@2
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75 glViewport(0, 0, x, y);
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nuclear@2
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76
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nuclear@2
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77 gl_matrix_mode(GL_PROJECTION);
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nuclear@2
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78 gl_load_identity();
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nuclear@2
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79 glu_perspective(45.0, (float)x / (float)y, 1.0, 1000.0);
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nuclear@2
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80 }
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nuclear@4
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81
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nuclear@4
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82 static unsigned int get_shader_program(const char *vfile, const char *pfile)
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nuclear@4
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83 {
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nuclear@4
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84 unsigned int prog, vs, ps;
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nuclear@4
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85
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nuclear@4
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86 if(!(vs = get_vertex_shader(find_resource(vfile, 0, 0)))) {
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nuclear@4
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87 return -1;
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nuclear@4
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88 }
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nuclear@4
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89 if(!(ps = get_pixel_shader(find_resource(pfile, 0, 0)))) {
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nuclear@4
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90 return -1;
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nuclear@4
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91 }
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nuclear@4
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92
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nuclear@4
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93 if(!(prog = create_program_link(vs, ps))) {
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nuclear@4
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94 return -1;
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nuclear@4
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95 }
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nuclear@4
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96 return prog;
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nuclear@4
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97 }
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