1 | /*
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2 | glh - is a platform-indepenedent C++ OpenGL helper library
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3 |
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4 |
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5 | Copyright (c) 2000 Cass Everitt
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6 | Copyright (c) 2000 NVIDIA Corporation
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7 | All rights reserved.
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8 |
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9 | Redistribution and use in source and binary forms, with or
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10 | without modification, are permitted provided that the following
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11 | conditions are met:
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12 |
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13 | * Redistributions of source code must retain the above
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14 | copyright notice, this list of conditions and the following
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15 | disclaimer.
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16 |
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17 | * Redistributions in binary form must reproduce the above
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18 | copyright notice, this list of conditions and the following
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19 | disclaimer in the documentation and/or other materials
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20 | provided with the distribution.
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21 |
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22 | * The names of contributors to this software may not be used
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23 | to endorse or promote products derived from this software
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24 | without specific prior written permission.
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25 |
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26 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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28 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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29 | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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30 | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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31 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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32 | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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33 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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34 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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35 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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36 | ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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37 | POSSIBILITY OF SUCH DAMAGE.
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38 |
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39 |
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40 | Cass Everitt - cass@r3.nu
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41 | */
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42 |
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43 | // This is a file for simple GL helper classes...
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44 |
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45 | #ifndef GLH_OBS_H
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46 | #define GLH_OBS_H
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47 |
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48 | #ifdef _WIN32
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49 | # include <windows.h>
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50 | #endif
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51 |
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52 | #ifdef MACOS
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53 | #include <OpenGL/gl.h>
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54 | #include <OpenGL/glext.h>
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55 | #else
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56 | #include <GL/gl.h>
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57 | #include <GL/glext.h>
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58 | #endif
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59 |
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60 | #include <glh/glh_extensions.h>
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61 |
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62 | #include <glh/glh_linear.h>
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63 |
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64 | namespace glh
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65 | {
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66 | class display_list
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67 | {
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68 | public:
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69 | // set managed to true if you want the class to cleanup objects in the destructor
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70 | display_list(bool managed = false)
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71 | : valid(false), manageObjects(managed) {}
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72 |
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73 | virtual ~display_list()
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74 | {
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75 | if (manageObjects)
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76 | del();
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77 | }
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78 |
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79 | void call_list()
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80 | { if(valid) glCallList(dlist); }
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81 |
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82 | void new_list(GLenum mode)
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83 | { if(!valid) gen(); glNewList(dlist, mode); }
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84 |
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85 | void end_list()
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86 | { glEndList(); }
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87 |
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88 | void del()
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89 | { if(valid) glDeleteLists(dlist, 1); valid = false; }
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90 |
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91 | bool is_valid() const { return valid; }
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92 |
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93 | private:
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94 |
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95 | void gen() { dlist = glGenLists(1); valid=true; }
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96 |
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97 | bool valid;
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98 | bool manageObjects;
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99 | GLuint dlist;
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100 | };
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101 |
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102 | class lazy_build_display_list
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103 | {
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104 | public:
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105 | // set managed to true if you want the class to cleanup objects in the destructor
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106 | lazy_build_display_list(void (* builder)() = 0, bool managed = false)
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107 | : valid(false), manageObjects(managed), needs_rebuild(true), build_func(builder) {}
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108 |
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109 | virtual ~lazy_build_display_list()
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110 | {
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111 | if (manageObjects)
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112 | del();
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113 | }
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114 |
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115 | void set_build_func( void (* builder)())
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116 | { build_func = builder; }
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117 |
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118 | void call_list()
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119 | {
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120 | if(! valid) gen();
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121 | if(needs_rebuild) rebuild_list();
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122 | glCallList(dlist);
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123 | }
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124 |
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125 | void del()
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126 | { if(valid) glDeleteLists(dlist, 1); valid = false; needs_rebuild = true;}
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127 |
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128 | bool is_valid() const { return valid; }
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129 |
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130 | // something changed, so rebuild list before next call_list()
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131 | void rebuild() { needs_rebuild = true; }
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132 |
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133 | private:
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134 |
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135 | void gen() { dlist = glGenLists(1); valid=true; }
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136 | void rebuild_list()
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137 | {
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138 | glNewList(dlist, GL_COMPILE);
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139 | if(build_func) (* build_func)(); // call list building routine
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140 | glEndList();
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141 | }
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142 |
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143 | bool valid;
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144 | bool manageObjects;
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145 | bool needs_rebuild;
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146 | GLuint dlist;
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147 | void (* build_func)();
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148 | };
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149 |
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150 |
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151 | class tex_object
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152 | {
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153 | public:
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154 | // set managed to true if you want the class to cleanup objects in the destructor
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155 | tex_object(GLenum tgt, bool managed)
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156 | : target(tgt), valid(false), manageObjects(managed) {}
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157 |
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158 | virtual ~tex_object()
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159 | {
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160 | if (manageObjects)
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161 | del();
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162 | }
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163 |
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164 | void bind()
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165 | { if(!valid) gen(); glBindTexture(target, texture); }
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166 |
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167 | // convenience methods
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168 |
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169 | #ifdef MACOS
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170 | void parameter(GLenum pname, int i)
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171 | { glTexParameteri(target, pname, i); }
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172 | #endif
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173 |
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174 | void parameter(GLenum pname, GLint i)
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175 | { glTexParameteri(target, pname, i); }
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176 |
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177 | void parameter(GLenum pname, GLfloat f)
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178 | { glTexParameterf(target, pname, f); }
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179 |
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180 | void parameter(GLenum pname, GLint * ip)
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181 | { glTexParameteriv(target, pname, ip); }
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182 |
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183 | void parameter(GLenum pname, GLfloat * fp)
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184 | { glTexParameterfv(target, pname, fp); }
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185 |
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186 | void enable() { glEnable(target); }
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187 | void disable() { glDisable(target); }
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188 |
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189 |
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190 | void del()
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191 | { if(valid) glDeleteTextures(1, &texture); valid = false; }
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192 | bool is_valid() const { return valid; }
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193 |
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194 | void gen() { glGenTextures(1, &texture); valid=true; }
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195 |
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196 | GLenum target;
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197 | bool valid;
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198 | bool manageObjects;
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199 | GLuint texture;
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200 | };
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201 |
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202 | class tex_object_1D : public tex_object
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203 | { public: tex_object_1D(bool managed = false) : tex_object(GL_TEXTURE_1D, managed) {} };
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204 |
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205 | class tex_object_2D : public tex_object
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206 | { public: tex_object_2D(bool managed = false) : tex_object(GL_TEXTURE_2D, managed) {} };
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207 |
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208 | class tex_object_3D : public tex_object
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209 | { public: tex_object_3D(bool managed = false) : tex_object(GL_TEXTURE_3D, managed) {} };
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210 |
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211 |
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212 | # ifdef GL_ARB_texture_cube_map
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213 | class tex_object_cube_map : public tex_object
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214 | { public: tex_object_cube_map(bool managed = false) : tex_object(GL_TEXTURE_CUBE_MAP_ARB, managed) {} };
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215 | # elif GL_EXT_texture_cube_map
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216 | class tex_object_cube_map : public tex_object
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217 | { public: tex_object_cube_map(bool managed = false) : tex_object(GL_TEXTURE_CUBE_MAP_EXT, managed) {} };
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218 | # endif
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219 |
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220 | #if defined(GL_EXT_texture_rectangle)
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221 | class tex_object_rectangle : public tex_object
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222 | { public: tex_object_rectangle(bool managed = false) : tex_object(GL_TEXTURE_RECTANGLE_EXT, managed) {} };
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223 | #elif defined(GL_NV_texture_rectangle)
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224 | class tex_object_rectangle : public tex_object
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225 | { public: tex_object_rectangle(bool managed = false) : tex_object(GL_TEXTURE_RECTANGLE_NV, managed) {} };
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226 | #endif
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227 |
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228 |
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229 | # ifdef GL_NV_vertex_program
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230 | class vertex_program_base
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231 | {
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232 | public:
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233 | // set managed to true if you want the class to cleanup objects in the destructor
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234 | vertex_program_base(GLenum tgt, bool managed)
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235 | : valid(false), manageObjects(managed), target(tgt) {}
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236 |
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237 | virtual ~vertex_program_base()
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238 | {
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239 | if (manageObjects)
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240 | del();
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241 | }
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242 |
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243 | void bind()
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244 | { if(!valid) gen(); glBindProgramNV(target, program); }
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245 |
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246 | void unbind()
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247 | { glBindProgramNV(target, 0); }
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248 |
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249 | void load(GLuint size, const GLubyte * prog_text)
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250 | {
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251 | if(!valid) gen();
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252 | glLoadProgramNV(target, program, size, prog_text);
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253 | GLint errpos;
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254 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_NV, &errpos);
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255 | if(errpos != -1)
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256 | {
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257 | fprintf(stderr, "program error:\n");
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258 | int bgn = errpos - 10;
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259 | bgn < 0 ? 0 : bgn;
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260 | const char * c = (const char *)(prog_text + bgn);
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261 | for(int i = 0; i < 30; i++)
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262 | {
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263 | if(bgn+i >= int(size-1))
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264 | break;
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265 | fprintf(stderr, "%c", *c++);
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266 | }
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267 | fprintf(stderr, "\n");
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268 | }
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269 | }
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270 |
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271 | void load(GLuint size, const char * prog_text)
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272 | {
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273 | if(!valid) gen();
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274 | glLoadProgramNV(target, program, size, (const GLubyte *) prog_text);
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275 | GLint errpos;
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276 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_NV, &errpos);
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277 | if(errpos != -1)
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278 | {
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279 | fprintf(stderr, "program error:\n");
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280 | int bgn = errpos - 10;
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281 | //bgn < 0 ? 0 : bgn;
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282 | const char * c = (const char *)(prog_text + bgn);
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283 | for(int i = 0; i < 30; i++)
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284 | {
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285 | if(bgn+i >= int(size-1))
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286 | break;
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287 | fprintf(stderr, "%c", *c++);
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288 | }
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289 | fprintf(stderr, "\n");
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290 | }
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291 | }
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292 |
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293 | void load(const char * prog_text)
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294 | { load((GLuint)strlen(prog_text), prog_text); }
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295 |
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296 |
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297 | void del()
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298 | { if(valid) glDeleteProgramsNV(1, &program); valid = false; }
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299 |
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300 | bool is_valid() const { return valid; }
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301 |
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302 | private:
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303 |
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304 | void gen() { glGenProgramsNV(1, &program); valid=true; }
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305 |
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306 | bool valid;
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307 | bool manageObjects;
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308 | GLenum target;
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309 | GLuint program;
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310 | };
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311 |
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312 | class vertex_program : public vertex_program_base
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313 | {
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314 | public:
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315 | vertex_program(bool managed = false)
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316 | : vertex_program_base(GL_VERTEX_PROGRAM_NV, managed) {}
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317 | };
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318 |
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319 | class vertex_state_program : public vertex_program_base
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320 | {
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321 | public:
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322 | vertex_state_program(bool managed = false)
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323 | : vertex_program_base(GL_VERTEX_STATE_PROGRAM_NV, managed) {}
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324 | };
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325 |
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326 | class lazy_load_vertex_program : public vertex_program_base
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327 | {
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328 | public:
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329 | lazy_load_vertex_program(void (*vp_loader)() = 0, bool managed = false)
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330 | : vertex_program_base(GL_VERTEX_PROGRAM_NV, managed), needs_load(true), loader(vp_loader) {}
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331 |
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332 | void bind()
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333 | {
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334 | vertex_program_base::bind();
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335 | if(needs_load && loader)
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336 | {
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337 | (* loader)();
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338 | needs_load = false;
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339 | }
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340 | }
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341 |
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342 | void reload() { needs_load = true; }
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343 |
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344 | private:
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345 | bool needs_load;
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346 | void (* loader)();
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347 | };
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348 |
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349 |
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350 | #endif
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351 |
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352 | # ifdef GL_ARB_vertex_program
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353 | class arb_vertex_program_base
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354 | {
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355 | public:
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356 | // set managed to true if you want the class to cleanup objects in the destructor
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357 | arb_vertex_program_base(GLenum tgt, bool managed)
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358 | : valid(false), manageObjects(managed), target(tgt) {}
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359 |
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360 | virtual ~arb_vertex_program_base()
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361 | {
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362 | if (manageObjects)
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363 | del();
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364 | }
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365 |
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366 | void bind()
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367 | { if(!valid) gen(); glBindProgramARB(target, program); }
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368 |
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369 | void unbind()
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370 | { glBindProgramARB(target, 0); }
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371 |
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372 | void load(GLuint size, const GLubyte * prog_text)
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373 | {
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374 | if(!valid) gen();
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375 | bind();
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376 | glProgramStringARB(target, GL_PROGRAM_FORMAT_ASCII_ARB, size, prog_text);
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377 | GLint errpos;
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378 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errpos);
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379 | if(errpos != -1)
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380 | {
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381 | fprintf(stderr, "program error:\n");
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382 | int bgn = errpos - 10;
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383 | bgn < 0 ? 0 : bgn;
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384 | const char * c = (const char *)(prog_text + bgn);
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385 | for(int i = 0; i < 30; i++)
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386 | {
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387 | if(bgn+i >= int(size-1))
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388 | break;
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389 | fprintf(stderr, "%c", *c++);
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390 | }
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391 | fprintf(stderr, "\n");
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392 | }
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393 | }
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394 |
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395 | void load(GLuint size, const char * prog_text)
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396 | {
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397 | if(!valid) gen();
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398 | bind();
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399 | glProgramStringARB(target, GL_PROGRAM_FORMAT_ASCII_ARB, size, prog_text);
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400 | GLint errpos;
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401 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errpos);
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402 | if(errpos != -1)
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403 | {
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404 | fprintf(stderr, "program error:\n");
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405 | int bgn = errpos - 10;
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406 | //bgn < 0 ? 0 : bgn;
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407 | const char * c = (const char *)(prog_text + bgn);
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408 | for(int i = 0; i < 30; i++)
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409 | {
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410 | if(bgn+i >= int(size-1))
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411 | break;
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412 | fprintf(stderr, "%c", *c++);
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413 | }
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414 | fprintf(stderr, "\n");
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415 | }
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416 | }
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417 |
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418 | void load(const char * prog_text)
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419 | { load((GLuint)strlen(prog_text), prog_text); }
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420 |
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421 |
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422 | void del() { if(valid) glDeleteProgramsARB(1, &program); valid = false; }
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423 |
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424 | bool is_valid() const { return valid; }
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425 |
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426 | private:
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427 |
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428 | void gen() { glGenProgramsARB(1, &program); valid=true; }
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429 |
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430 | bool valid;
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431 | bool manageObjects;
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432 | GLenum target;
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433 | GLuint program;
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434 | };
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435 |
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436 | class arb_vertex_program : public arb_vertex_program_base
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437 | {
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438 | public:
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439 | arb_vertex_program(bool managed = false)
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440 | : arb_vertex_program_base(GL_VERTEX_PROGRAM_ARB, managed) {}
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441 | };
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442 |
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443 | class lazy_load_arb_vertex_program : public arb_vertex_program_base
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444 | {
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445 | public:
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446 | lazy_load_arb_vertex_program(void (*vp_loader)() = 0, bool managed = false)
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447 | : arb_vertex_program_base(GL_VERTEX_PROGRAM_ARB, managed), needs_load(true), loader(vp_loader) {}
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448 |
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449 | void bind()
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450 | {
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451 | arb_vertex_program_base::bind();
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452 | if(needs_load && loader)
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453 | {
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454 | (* loader)();
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455 | needs_load = false;
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456 | }
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457 | }
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458 |
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459 | void reload() { needs_load = true; }
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460 |
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461 | private:
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462 | bool needs_load;
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463 | void (* loader)();
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464 | };
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465 |
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466 | #endif
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467 |
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468 | # ifdef GL_NV_fragment_program
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469 |
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470 | class fragment_program
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471 | {
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472 | public:
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473 | // set managed to true if you want the class to cleanup objects in the destructor
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474 | fragment_program(bool managed = false)
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475 | : valid(false), manageObjects(managed) {}
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476 |
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477 | virtual ~fragment_program()
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478 | {
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479 | if (manageObjects)
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480 | del();
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481 | }
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482 |
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483 | void bind()
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484 | { if(!valid) gen(); glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, program); }
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485 |
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486 | void load(GLuint size, const GLubyte * prog_text)
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487 | {
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488 | if(!valid) gen();
|
---|
489 | glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, program, size, prog_text);
|
---|
490 | GLint errpos;
|
---|
491 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_NV, &errpos);
|
---|
492 | if(errpos != -1)
|
---|
493 | {
|
---|
494 | fprintf(stderr, "program error:\n");
|
---|
495 | int bgn = errpos - 10;
|
---|
496 | bgn < 0 ? 0 : bgn;
|
---|
497 | const char * c = (const char *)(prog_text + bgn);
|
---|
498 | for(int i = 0; i < 30; i++)
|
---|
499 | {
|
---|
500 | if(bgn+i >= int(size-1))
|
---|
501 | break;
|
---|
502 | fprintf(stderr, "%c", *c++);
|
---|
503 | }
|
---|
504 | fprintf(stderr, "\n");
|
---|
505 | }
|
---|
506 | }
|
---|
507 |
|
---|
508 | void load(GLuint size, const char * prog_text)
|
---|
509 | {
|
---|
510 | if(!valid) gen();
|
---|
511 | glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, program, size, (const GLubyte *) prog_text);
|
---|
512 | GLint errpos;
|
---|
513 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_NV, &errpos);
|
---|
514 | if(errpos != -1)
|
---|
515 | {
|
---|
516 | fprintf(stderr, "program error:\n");
|
---|
517 | int bgn = errpos - 10;
|
---|
518 |
|
---|
519 | const char * c = (const char *)(prog_text + bgn);
|
---|
520 | for(int i = 0; i < 30; i++)
|
---|
521 | {
|
---|
522 | if(bgn+i >= int(size-1))
|
---|
523 | break;
|
---|
524 | fprintf(stderr, "%c", *c++);
|
---|
525 | }
|
---|
526 | fprintf(stderr, "\n");
|
---|
527 | }
|
---|
528 | }
|
---|
529 |
|
---|
530 | void load(const char * prog_text)
|
---|
531 | { load((GLuint)strlen(prog_text), prog_text); }
|
---|
532 |
|
---|
533 | void del()
|
---|
534 | { if(valid) glDeleteProgramsNV(1, &program); valid = false; }
|
---|
535 |
|
---|
536 | bool is_valid() const { return valid; }
|
---|
537 |
|
---|
538 | GLuint program;
|
---|
539 | private:
|
---|
540 |
|
---|
541 | void gen() { glGenProgramsNV(1, &program); valid=true; }
|
---|
542 |
|
---|
543 | bool valid;
|
---|
544 | bool manageObjects;
|
---|
545 | };
|
---|
546 |
|
---|
547 |
|
---|
548 | #endif
|
---|
549 |
|
---|
550 | #ifdef GL_ARB_fragment_program
|
---|
551 |
|
---|
552 | class arb_fragment_program
|
---|
553 | {
|
---|
554 | public:
|
---|
555 | // set managed to true if you want the class to cleanup objects in the destructor
|
---|
556 | arb_fragment_program(bool managed = false)
|
---|
557 | : valid(false), manageObjects(managed) {}
|
---|
558 |
|
---|
559 | virtual ~arb_fragment_program()
|
---|
560 | {
|
---|
561 | if (manageObjects)
|
---|
562 | del();
|
---|
563 | }
|
---|
564 |
|
---|
565 | void bind()
|
---|
566 | { if(!valid) gen(); glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, program); }
|
---|
567 |
|
---|
568 | void load(GLuint size, const GLubyte * prog_text)
|
---|
569 | {
|
---|
570 | if(!valid) gen();
|
---|
571 | glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, size, prog_text);
|
---|
572 | //glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, program, size, prog_text);
|
---|
573 |
|
---|
574 | GLint errpos;
|
---|
575 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errpos);
|
---|
576 | if(errpos != -1)
|
---|
577 | {
|
---|
578 | fprintf(stderr, "program error:\n");
|
---|
579 | int bgn = errpos - 10;
|
---|
580 | bgn < 0 ? 0 : bgn;
|
---|
581 | const char * c = (const char *)(prog_text + bgn);
|
---|
582 | for(int i = 0; i < 30; i++)
|
---|
583 | {
|
---|
584 | if(bgn+i >= int(size-1))
|
---|
585 | break;
|
---|
586 | fprintf(stderr, "%c", *c++);
|
---|
587 | }
|
---|
588 | fprintf(stderr, "\n");
|
---|
589 | }
|
---|
590 | }
|
---|
591 |
|
---|
592 | void load(GLuint size, const char * prog_text)
|
---|
593 | {
|
---|
594 | if(!valid) gen();
|
---|
595 | glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, size, prog_text);
|
---|
596 | //glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, program, size, (const GLubyte *) prog_text);
|
---|
597 | GLint errpos;
|
---|
598 | glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errpos);
|
---|
599 | if(errpos != -1)
|
---|
600 | {
|
---|
601 | fprintf(stderr, "program error:\n");
|
---|
602 | int bgn = errpos - 10;
|
---|
603 |
|
---|
604 | const char * c = (const char *)(prog_text + bgn);
|
---|
605 | for(int i = 0; i < 30; i++)
|
---|
606 | {
|
---|
607 | if(bgn+i >= int(size-1))
|
---|
608 | break;
|
---|
609 | fprintf(stderr, "%c", *c++);
|
---|
610 | }
|
---|
611 | fprintf(stderr, "\n");
|
---|
612 | }
|
---|
613 | }
|
---|
614 |
|
---|
615 | void load(const char * prog_text)
|
---|
616 | { load((GLuint)strlen(prog_text), prog_text); }
|
---|
617 |
|
---|
618 | void del()
|
---|
619 | { if(valid) glDeleteProgramsARB(1, &program); valid = false; }
|
---|
620 |
|
---|
621 | bool is_valid() const { return valid; }
|
---|
622 |
|
---|
623 | GLuint program;
|
---|
624 | private:
|
---|
625 |
|
---|
626 | void gen() { glGenProgramsARB(1, &program); valid=true; }
|
---|
627 |
|
---|
628 | bool valid;
|
---|
629 | bool manageObjects;
|
---|
630 | };
|
---|
631 |
|
---|
632 |
|
---|
633 | #endif
|
---|
634 |
|
---|
635 | }
|
---|
636 | #endif
|
---|