1 | /* |
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2 | * ====================================================================== |
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3 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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4 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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5 | * |
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6 | * Copyright (c) 2004-2006 Purdue Research Foundation |
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7 | * |
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8 | * See the file "license.terms" for information on usage and |
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9 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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10 | * ====================================================================== |
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11 | */ |
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12 | |
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13 | |
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14 | //system wide global or static functions |
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15 | |
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16 | #ifndef _GLOBAL_H_ |
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17 | #define _GLOBAL_H_ |
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18 | |
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19 | #include <GL/glew.h> |
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20 | #include <Cg/cgGL.h> |
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21 | |
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22 | #include <stdio.h> |
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23 | |
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24 | #ifdef notdef |
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25 | #define CHECK_FRAMEBUFFER_STATUS() \ |
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26 | {\ |
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27 | GLenum status; \ |
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28 | status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); \ |
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29 | fprintf(stderr, "%x\n", status);\ |
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30 | switch(status) { \ |
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31 | case GL_FRAMEBUFFER_COMPLETE_EXT: \ |
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32 | fprintf(stderr,"framebuffer complete!\n");\ |
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33 | break; \ |
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34 | case GL_FRAMEBUFFER_UNSUPPORTED_EXT: \ |
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35 | fprintf(stderr,"framebuffer GL_FRAMEBUFFER_UNSUPPORTED_EXT\n");\ |
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36 | /* you gotta choose different formats */ \ |
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37 | assert(0); \ |
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38 | break; \ |
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39 | case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT: \ |
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40 | fprintf(stderr,"framebuffer INCOMPLETE_ATTACHMENT\n");\ |
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41 | break; \ |
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42 | case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT: \ |
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43 | fprintf(stderr,"framebuffer FRAMEBUFFER_MISSING_ATTACHMENT\n");\ |
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44 | break; \ |
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45 | case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT: \ |
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46 | fprintf(stderr,"framebuffer FRAMEBUFFER_DIMENSIONS\n");\ |
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47 | break; \ |
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48 | case GL_FRAMEBUFFER_INCOMPLETE_DUPLICATE_ATTACHMENT_EXT: \ |
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49 | fprintf(stderr,"framebuffer INCOMPLETE_DUPLICATE_ATTACHMENT\n");\ |
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50 | break; \ |
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51 | case GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT: \ |
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52 | fprintf(stderr,"framebuffer INCOMPLETE_FORMATS\n");\ |
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53 | break; \ |
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54 | case GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT: \ |
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55 | fprintf(stderr,"framebuffer INCOMPLETE_DRAW_BUFFER\n");\ |
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56 | break; \ |
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57 | case GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT: \ |
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58 | fprintf(stderr,"framebuffer INCOMPLETE_READ_BUFFER\n");\ |
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59 | break; \ |
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60 | case GL_FRAMEBUFFER_BINDING_EXT: \ |
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61 | fprintf(stderr,"framebuffer BINDING_EXT\n");\ |
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62 | break; \ |
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63 | /* |
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64 | * case GL_FRAMEBUFFER_STATUS_ERROR_EXT: \ |
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65 | * fprintf(stderr,"framebuffer STATUS_ERROR\n");\ |
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66 | * break; \ |
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67 | * */ \ |
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68 | default: \ |
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69 | /* programming error; will fail on all hardware */ \ |
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70 | assert(0); \ |
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71 | }\ |
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72 | } |
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73 | |
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74 | #define CHECK_FRAMEBUFFER_STATUS() \ |
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75 | { \ |
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76 | GLenum status; \ |
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77 | status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); \ |
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78 | switch(status) { \ |
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79 | case GL_FRAMEBUFFER_COMPLETE_EXT: \ |
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80 | break; \ |
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81 | case GL_FRAMEBUFFER_UNSUPPORTED_EXT: \ |
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82 | /* choose different formats */ \ |
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83 | break; \ |
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84 | default: \ |
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85 | /* programming error; will fail on all hardware */ \ |
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86 | fprintf(stderr, "programming error\n"); \ |
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87 | assert(0); \ |
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88 | } \ |
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89 | } |
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90 | #endif |
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91 | |
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92 | inline void |
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93 | draw_quad(int w, int h, int tw, int th) |
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94 | { |
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95 | glBegin(GL_QUADS); |
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96 | glTexCoord2f(0, 0); glVertex2f(0, 0); |
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97 | glTexCoord2f((float)tw, 0); glVertex2f((float)w, 0); |
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98 | glTexCoord2f((float)tw, (float)th); glVertex2f((float)w, (float) h); |
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99 | glTexCoord2f(0, (float)th); glVertex2f(0, (float) h); |
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100 | glEnd(); |
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101 | } |
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102 | |
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103 | |
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104 | //query opengl information |
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105 | inline void |
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106 | system_info() |
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107 | { |
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108 | fprintf(stderr, |
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109 | "-----------------------------------------------------------\n"); |
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110 | fprintf(stderr, "OpenGL driver: %s %s\n", glGetString(GL_VENDOR), |
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111 | glGetString(GL_VERSION)); |
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112 | fprintf(stderr, "Graphics hardware: %s\n", glGetString(GL_RENDERER)); |
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113 | fprintf(stderr, |
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114 | "-----------------------------------------------------------\n"); |
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115 | } |
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116 | |
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117 | extern CGprogram LoadCgSourceProgram(CGcontext context, const char *filename, |
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118 | CGprofile profile, const char *entryPoint); |
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119 | |
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120 | #endif |
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