Mercurial > sdl-ios-xcode
annotate test/testgl.c @ 940:bb1588ebe47b
Date: Sat, 10 Jul 2004 21:02:33 +0200
From: "Philippe Plantier (ayin)"
Subject: [SDL] Problems allocating large surfaces
There are problems when allocating large surfaces using SDL_CreateRGBSurface.
When, for example, we try to allocate a surface wider than 16384 pixels,
the calculation of the pitch overflows; this leads to a surface that
has the w and h flags correctly set, but whose "pixels" buffer is too
small. That may lead to heap corruption.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 21 Aug 2004 05:29:45 +0000 |
| parents | 4272450dd8d0 |
| children | 670e74bf5cc8 |
| rev | line source |
|---|---|
| 0 | 1 #include <stdlib.h> |
| 2 #include <stdio.h> | |
| 3 #include <string.h> | |
| 4 #include <math.h> | |
| 5 | |
| 6 #include "SDL.h" | |
| 7 | |
| 8 #ifdef HAVE_OPENGL | |
|
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9 |
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10 #include "SDL_opengl.h" |
| 0 | 11 |
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12 /* Undefine this if you want a flat cube instead of a rainbow cube */ |
| 0 | 13 #define SHADED_CUBE |
| 14 | |
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15 /* Define this to be the name of the logo image to use with -logo */ |
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16 #define LOGO_FILE "icon.bmp" |
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17 |
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18 /* The SDL_OPENGLBLIT interface is deprecated. |
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19 The code is still available for benchmark purposes though. |
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20 */ |
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21 |
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22 static SDL_bool USE_DEPRECATED_OPENGLBLIT = SDL_FALSE; |
| 0 | 23 |
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24 static SDL_Surface *global_image = NULL; |
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25 static GLuint global_texture = 0; |
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26 static GLuint cursor_texture = 0; |
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27 |
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28 /**********************************************************************/ |
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29 |
| 0 | 30 void HotKey_ToggleFullScreen(void) |
| 31 { | |
| 32 SDL_Surface *screen; | |
| 33 | |
| 34 screen = SDL_GetVideoSurface(); | |
| 35 if ( SDL_WM_ToggleFullScreen(screen) ) { | |
| 36 printf("Toggled fullscreen mode - now %s\n", | |
| 37 (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed"); | |
| 38 } else { | |
| 39 printf("Unable to toggle fullscreen mode\n"); | |
| 40 } | |
| 41 } | |
| 42 | |
| 43 void HotKey_ToggleGrab(void) | |
| 44 { | |
| 45 SDL_GrabMode mode; | |
| 46 | |
| 47 printf("Ctrl-G: toggling input grab!\n"); | |
| 48 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); | |
| 49 if ( mode == SDL_GRAB_ON ) { | |
| 50 printf("Grab was on\n"); | |
| 51 } else { | |
| 52 printf("Grab was off\n"); | |
| 53 } | |
| 54 mode = SDL_WM_GrabInput(!mode); | |
| 55 if ( mode == SDL_GRAB_ON ) { | |
| 56 printf("Grab is now on\n"); | |
| 57 } else { | |
| 58 printf("Grab is now off\n"); | |
| 59 } | |
| 60 } | |
| 61 | |
| 62 void HotKey_Iconify(void) | |
| 63 { | |
| 64 printf("Ctrl-Z: iconifying window!\n"); | |
| 65 SDL_WM_IconifyWindow(); | |
| 66 } | |
| 67 | |
| 68 int HandleEvent(SDL_Event *event) | |
| 69 { | |
| 70 int done; | |
| 71 | |
| 72 done = 0; | |
| 73 switch( event->type ) { | |
| 74 case SDL_ACTIVEEVENT: | |
| 75 /* See what happened */ | |
| 76 printf( "app %s ", event->active.gain ? "gained" : "lost" ); | |
| 77 if ( event->active.state & SDL_APPACTIVE ) { | |
| 78 printf( "active " ); | |
| 79 } else if ( event->active.state & SDL_APPMOUSEFOCUS ) { | |
| 80 printf( "mouse " ); | |
| 81 } else if ( event->active.state & SDL_APPINPUTFOCUS ) { | |
| 82 printf( "input " ); | |
| 83 } | |
| 84 printf( "focus\n" ); | |
| 85 break; | |
| 86 | |
| 87 | |
| 88 case SDL_KEYDOWN: | |
| 89 if ( event->key.keysym.sym == SDLK_ESCAPE ) { | |
| 90 done = 1; | |
| 91 } | |
| 92 if ( (event->key.keysym.sym == SDLK_g) && | |
| 93 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 94 HotKey_ToggleGrab(); | |
| 95 } | |
| 96 if ( (event->key.keysym.sym == SDLK_z) && | |
| 97 (event->key.keysym.mod & KMOD_CTRL) ) { | |
| 98 HotKey_Iconify(); | |
| 99 } | |
| 100 if ( (event->key.keysym.sym == SDLK_RETURN) && | |
| 101 (event->key.keysym.mod & KMOD_ALT) ) { | |
| 102 HotKey_ToggleFullScreen(); | |
| 103 } | |
| 104 printf("key '%s' pressed\n", | |
| 105 SDL_GetKeyName(event->key.keysym.sym)); | |
| 106 break; | |
| 107 case SDL_QUIT: | |
| 108 done = 1; | |
| 109 break; | |
| 110 } | |
| 111 return(done); | |
| 112 } | |
| 113 | |
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114 void SDL_GL_Enter2DMode() |
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115 { |
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116 SDL_Surface *screen = SDL_GetVideoSurface(); |
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117 |
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118 /* Note, there may be other things you need to change, |
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119 depending on how you have your OpenGL state set up. |
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120 */ |
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121 glPushAttrib(GL_ENABLE_BIT); |
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122 glDisable(GL_DEPTH_TEST); |
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123 glDisable(GL_CULL_FACE); |
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124 glEnable(GL_TEXTURE_2D); |
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125 |
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126 /* This allows alpha blending of 2D textures with the scene */ |
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127 glEnable(GL_BLEND); |
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128 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); |
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129 |
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130 glViewport(0, 0, screen->w, screen->h); |
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131 |
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132 glMatrixMode(GL_PROJECTION); |
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133 glPushMatrix(); |
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134 glLoadIdentity(); |
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135 |
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136 glOrtho(0.0, (GLdouble)screen->w, (GLdouble)screen->h, 0.0, 0.0, 1.0); |
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137 |
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138 glMatrixMode(GL_MODELVIEW); |
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139 glPushMatrix(); |
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140 glLoadIdentity(); |
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141 |
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142 glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); |
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143 } |
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144 |
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145 void SDL_GL_Leave2DMode() |
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146 { |
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147 glMatrixMode(GL_MODELVIEW); |
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148 glPopMatrix(); |
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149 |
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150 glMatrixMode(GL_PROJECTION); |
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151 glPopMatrix(); |
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152 |
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153 glPopAttrib(); |
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154 } |
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155 |
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156 /* Quick utility function for texture creation */ |
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157 static int power_of_two(int input) |
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158 { |
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159 int value = 1; |
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160 |
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161 while ( value < input ) { |
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162 value <<= 1; |
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163 } |
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164 return value; |
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165 } |
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166 |
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167 GLuint SDL_GL_LoadTexture(SDL_Surface *surface, GLfloat *texcoord) |
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168 { |
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169 GLuint texture; |
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170 int w, h; |
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171 SDL_Surface *image; |
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172 SDL_Rect area; |
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173 Uint32 saved_flags; |
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174 Uint8 saved_alpha; |
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175 |
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176 /* Use the surface width and height expanded to powers of 2 */ |
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177 w = power_of_two(surface->w); |
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178 h = power_of_two(surface->h); |
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179 texcoord[0] = 0.0f; /* Min X */ |
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180 texcoord[1] = 0.0f; /* Min Y */ |
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181 texcoord[2] = (GLfloat)surface->w / w; /* Max X */ |
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182 texcoord[3] = (GLfloat)surface->h / h; /* Max Y */ |
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183 |
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184 image = SDL_CreateRGBSurface( |
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185 SDL_SWSURFACE, |
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186 w, h, |
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187 32, |
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188 #if SDL_BYTEORDER == SDL_LIL_ENDIAN /* OpenGL RGBA masks */ |
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189 0x000000FF, |
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190 0x0000FF00, |
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191 0x00FF0000, |
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192 0xFF000000 |
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193 #else |
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194 0xFF000000, |
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195 0x00FF0000, |
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196 0x0000FF00, |
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197 0x000000FF |
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198 #endif |
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199 ); |
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200 if ( image == NULL ) { |
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201 return 0; |
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202 } |
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203 |
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204 /* Save the alpha blending attributes */ |
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205 saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK); |
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206 saved_alpha = surface->format->alpha; |
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207 if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
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208 SDL_SetAlpha(surface, 0, 0); |
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209 } |
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210 |
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211 /* Copy the surface into the GL texture image */ |
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212 area.x = 0; |
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213 area.y = 0; |
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214 area.w = surface->w; |
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215 area.h = surface->h; |
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216 SDL_BlitSurface(surface, &area, image, &area); |
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217 |
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218 /* Restore the alpha blending attributes */ |
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219 if ( (saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { |
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220 SDL_SetAlpha(surface, saved_flags, saved_alpha); |
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221 } |
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222 |
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223 /* Create an OpenGL texture for the image */ |
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224 glGenTextures(1, &texture); |
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225 glBindTexture(GL_TEXTURE_2D, texture); |
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226 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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227 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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228 glTexImage2D(GL_TEXTURE_2D, |
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229 0, |
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230 GL_RGBA, |
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231 w, h, |
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232 0, |
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233 GL_RGBA, |
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234 GL_UNSIGNED_BYTE, |
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235 image->pixels); |
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236 SDL_FreeSurface(image); /* No longer needed */ |
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237 |
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238 return texture; |
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239 } |
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240 |
|
933
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241 void DrawLogoCursor(void) |
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242 { |
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243 static GLfloat texMinX, texMinY; |
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244 static GLfloat texMaxX, texMaxY; |
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245 static int w, h; |
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246 int x, y; |
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247 |
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248 SDL_Surface *screen = SDL_GetVideoSurface(); |
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249 |
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250 if ( ! cursor_texture ) { |
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251 SDL_Surface *image; |
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252 GLfloat texcoord[4]; |
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253 |
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254 /* Load the image (could use SDL_image library here) */ |
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255 image = SDL_LoadBMP(LOGO_FILE); |
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256 if ( image == NULL ) { |
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257 return; |
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258 } |
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259 w = image->w; |
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260 h = image->h; |
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261 |
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262 /* Convert the image into an OpenGL texture */ |
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263 cursor_texture = SDL_GL_LoadTexture(image, texcoord); |
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264 |
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265 /* Make texture coordinates easy to understand */ |
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266 texMinX = texcoord[0]; |
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267 texMinY = texcoord[1]; |
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268 texMaxX = texcoord[2]; |
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269 texMaxY = texcoord[3]; |
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270 |
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271 /* We don't need the original image anymore */ |
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272 SDL_FreeSurface(image); |
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273 |
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274 /* Make sure that the texture conversion is okay */ |
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275 if ( ! cursor_texture ) { |
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276 return; |
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277 } |
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278 } |
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279 |
|
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280 /* Move the image around */ |
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281 SDL_GetMouseState(&x, &y); |
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282 x -= w/2; |
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283 y -= h/2; |
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284 |
|
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285 /* Show the image on the screen */ |
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286 SDL_GL_Enter2DMode(); |
|
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287 glBindTexture(GL_TEXTURE_2D, cursor_texture); |
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288 glBegin(GL_TRIANGLE_STRIP); |
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289 glTexCoord2f(texMinX, texMinY); glVertex2i(x, y ); |
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290 glTexCoord2f(texMaxX, texMinY); glVertex2i(x+w, y ); |
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291 glTexCoord2f(texMinX, texMaxY); glVertex2i(x, y+h); |
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292 glTexCoord2f(texMaxX, texMaxY); glVertex2i(x+w, y+h); |
|
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293 glEnd(); |
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294 SDL_GL_Leave2DMode(); |
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295 } |
|
492
c59692dcdce0
*** empty log message ***
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296 |
|
234
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297 void DrawLogoTexture(void) |
|
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298 { |
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299 static GLfloat texMinX, texMinY; |
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300 static GLfloat texMaxX, texMaxY; |
|
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301 static int x = 0; |
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302 static int y = 0; |
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303 static int w, h; |
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304 static int delta_x = 1; |
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305 static int delta_y = 1; |
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306 static Uint32 last_moved = 0; |
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307 |
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308 SDL_Surface *screen = SDL_GetVideoSurface(); |
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309 |
|
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310 if ( ! global_texture ) { |
|
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311 SDL_Surface *image; |
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312 GLfloat texcoord[4]; |
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313 |
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314 /* Load the image (could use SDL_image library here) */ |
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315 image = SDL_LoadBMP(LOGO_FILE); |
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316 if ( image == NULL ) { |
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317 return; |
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318 } |
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319 w = image->w; |
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320 h = image->h; |
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321 |
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322 /* Convert the image into an OpenGL texture */ |
|
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323 global_texture = SDL_GL_LoadTexture(image, texcoord); |
|
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324 |
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325 /* Make texture coordinates easy to understand */ |
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326 texMinX = texcoord[0]; |
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327 texMinY = texcoord[1]; |
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328 texMaxX = texcoord[2]; |
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329 texMaxY = texcoord[3]; |
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330 |
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331 /* We don't need the original image anymore */ |
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332 SDL_FreeSurface(image); |
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333 |
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334 /* Make sure that the texture conversion is okay */ |
|
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335 if ( ! global_texture ) { |
|
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336 return; |
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337 } |
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338 } |
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339 |
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340 /* Move the image around */ |
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341 x += delta_x; |
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342 if ( x < 0 ) { |
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343 x = 0; |
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344 delta_x = -delta_x; |
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345 } else |
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346 if ( (x+w) > screen->w ) { |
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347 x = screen->w-w; |
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348 delta_x = -delta_x; |
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349 } |
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350 y += delta_y; |
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351 if ( y < 0 ) { |
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352 y = 0; |
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353 delta_y = -delta_y; |
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354 } else |
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355 if ( (y+h) > screen->h ) { |
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356 y = screen->h-h; |
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357 delta_y = -delta_y; |
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358 } |
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359 |
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360 /* Show the image on the screen */ |
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361 SDL_GL_Enter2DMode(); |
|
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362 glBindTexture(GL_TEXTURE_2D, global_texture); |
|
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363 glBegin(GL_TRIANGLE_STRIP); |
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364 glTexCoord2f(texMinX, texMinY); glVertex2i(x, y ); |
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365 glTexCoord2f(texMaxX, texMinY); glVertex2i(x+w, y ); |
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366 glTexCoord2f(texMinX, texMaxY); glVertex2i(x, y+h); |
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367 glTexCoord2f(texMaxX, texMaxY); glVertex2i(x+w, y+h); |
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368 glEnd(); |
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369 SDL_GL_Leave2DMode(); |
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370 } |
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371 |
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372 /* This code is deprecated, but available for speed comparisons */ |
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373 void DrawLogoBlit(void) |
| 0 | 374 { |
| 375 static int x = 0; | |
| 376 static int y = 0; | |
|
233
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SDL_OPENGLBLIT is deprecated, show the "right way" of doing things
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377 static int w, h; |
| 0 | 378 static int delta_x = 1; |
| 379 static int delta_y = 1; | |
| 380 static Uint32 last_moved = 0; | |
| 381 | |
| 382 SDL_Rect dst; | |
|
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383 SDL_Surface *screen = SDL_GetVideoSurface(); |
| 0 | 384 |
|
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385 if ( global_image == NULL ) { |
| 0 | 386 SDL_Surface *temp; |
| 387 | |
|
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388 /* Load the image (could use SDL_image library here) */ |
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389 temp = SDL_LoadBMP(LOGO_FILE); |
| 0 | 390 if ( temp == NULL ) { |
| 391 return; | |
| 392 } | |
|
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393 w = temp->w; |
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394 h = temp->h; |
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395 |
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396 /* Convert the image into the screen format */ |
|
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397 global_image = SDL_CreateRGBSurface( |
| 0 | 398 SDL_SWSURFACE, |
|
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399 w, h, |
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400 screen->format->BitsPerPixel, |
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401 screen->format->Rmask, |
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402 screen->format->Gmask, |
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403 screen->format->Bmask, |
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404 screen->format->Amask); |
|
492
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|
405 if ( global_image ) { |
|
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|
406 SDL_BlitSurface(temp, NULL, global_image, NULL); |
| 0 | 407 } |
| 408 SDL_FreeSurface(temp); | |
|
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409 |
|
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410 /* Make sure that the texture conversion is okay */ |
|
492
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|
411 if ( ! global_image ) { |
| 0 | 412 return; |
| 413 } | |
| 414 } | |
| 415 | |
|
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416 /* Move the image around |
| 0 | 417 Note that we do not clear the old position. This is because we |
| 418 perform a glClear() which clears the framebuffer and then only | |
| 419 update the new area. | |
| 420 Note that you can also achieve interesting effects by modifying | |
| 421 the screen surface alpha channel. It's set to 255 by default.. | |
| 422 */ | |
|
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423 x += delta_x; |
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424 if ( x < 0 ) { |
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425 x = 0; |
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426 delta_x = -delta_x; |
|
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427 } else |
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428 if ( (x+w) > screen->w ) { |
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429 x = screen->w-w; |
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430 delta_x = -delta_x; |
| 0 | 431 } |
|
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432 y += delta_y; |
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433 if ( y < 0 ) { |
|
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434 y = 0; |
|
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435 delta_y = -delta_y; |
|
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436 } else |
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437 if ( (y+h) > screen->h ) { |
|
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438 y = screen->h-h; |
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439 delta_y = -delta_y; |
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440 } |
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441 dst.x = x; |
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442 dst.y = y; |
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443 dst.w = w; |
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444 dst.h = h; |
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445 SDL_BlitSurface(global_image, NULL, screen, &dst); |
|
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446 |
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447 /* Show the image on the screen */ |
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448 SDL_UpdateRects(screen, 1, &dst); |
| 0 | 449 } |
| 450 | |
| 451 int RunGLTest( int argc, char* argv[], | |
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452 int logo, int logocursor, int slowly, int bpp, float gamma, int noframe, int fsaa ) |
| 0 | 453 { |
| 454 int i; | |
| 455 int rgb_size[3]; | |
| 456 int w = 640; | |
| 457 int h = 480; | |
| 458 int done = 0; | |
| 459 int frames; | |
| 460 Uint32 start_time, this_time; | |
| 461 float color[8][3]= {{ 1.0, 1.0, 0.0}, | |
| 462 { 1.0, 0.0, 0.0}, | |
| 463 { 0.0, 0.0, 0.0}, | |
| 464 { 0.0, 1.0, 0.0}, | |
| 465 { 0.0, 1.0, 1.0}, | |
| 466 { 1.0, 1.0, 1.0}, | |
| 467 { 1.0, 0.0, 1.0}, | |
| 468 { 0.0, 0.0, 1.0}}; | |
| 469 float cube[8][3]= {{ 0.5, 0.5, -0.5}, | |
| 470 { 0.5, -0.5, -0.5}, | |
| 471 {-0.5, -0.5, -0.5}, | |
| 472 {-0.5, 0.5, -0.5}, | |
| 473 {-0.5, 0.5, 0.5}, | |
| 474 { 0.5, 0.5, 0.5}, | |
| 475 { 0.5, -0.5, 0.5}, | |
| 476 {-0.5, -0.5, 0.5}}; | |
| 477 Uint32 video_flags; | |
| 478 int value; | |
| 479 | |
| 480 if( SDL_Init( SDL_INIT_VIDEO ) < 0 ) { | |
| 481 fprintf(stderr,"Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 482 exit( 1 ); | |
| 483 } | |
| 484 | |
| 485 /* See if we should detect the display depth */ | |
| 486 if ( bpp == 0 ) { | |
| 487 if ( SDL_GetVideoInfo()->vfmt->BitsPerPixel <= 8 ) { | |
| 488 bpp = 8; | |
| 489 } else { | |
| 490 bpp = 16; /* More doesn't seem to work */ | |
| 491 } | |
| 492 } | |
| 493 | |
| 494 /* Set the flags we want to use for setting the video mode */ | |
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495 if ( logo && USE_DEPRECATED_OPENGLBLIT ) { |
| 0 | 496 video_flags = SDL_OPENGLBLIT; |
| 497 } else { | |
| 498 video_flags = SDL_OPENGL; | |
| 499 } | |
| 500 for ( i=1; argv[i]; ++i ) { | |
| 501 if ( strcmp(argv[1], "-fullscreen") == 0 ) { | |
| 502 video_flags |= SDL_FULLSCREEN; | |
| 503 } | |
| 504 } | |
| 505 | |
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506 if (noframe) { |
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507 video_flags |= SDL_NOFRAME; |
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508 } |
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509 |
| 0 | 510 /* Initialize the display */ |
| 511 switch (bpp) { | |
| 512 case 8: | |
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513 rgb_size[0] = 3; |
| 0 | 514 rgb_size[1] = 3; |
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515 rgb_size[2] = 2; |
| 0 | 516 break; |
| 517 case 15: | |
| 518 case 16: | |
| 519 rgb_size[0] = 5; | |
| 520 rgb_size[1] = 5; | |
| 521 rgb_size[2] = 5; | |
| 522 break; | |
| 523 default: | |
| 524 rgb_size[0] = 8; | |
| 525 rgb_size[1] = 8; | |
| 526 rgb_size[2] = 8; | |
| 527 break; | |
| 528 } | |
| 529 SDL_GL_SetAttribute( SDL_GL_RED_SIZE, rgb_size[0] ); | |
| 530 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, rgb_size[1] ); | |
| 531 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, rgb_size[2] ); | |
| 532 SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 ); | |
| 533 SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); | |
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534 if ( fsaa ) { |
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535 SDL_GL_SetAttribute( SDL_GL_MULTISAMPLEBUFFERS, 1 ); |
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536 SDL_GL_SetAttribute( SDL_GL_MULTISAMPLESAMPLES, fsaa ); |
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537 } |
| 0 | 538 if ( SDL_SetVideoMode( w, h, bpp, video_flags ) == NULL ) { |
| 539 fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError()); | |
| 540 SDL_Quit(); | |
| 541 exit(1); | |
| 542 } | |
| 543 | |
| 544 printf("Screen BPP: %d\n", SDL_GetVideoSurface()->format->BitsPerPixel); | |
| 545 printf("\n"); | |
| 546 printf( "Vendor : %s\n", glGetString( GL_VENDOR ) ); | |
| 547 printf( "Renderer : %s\n", glGetString( GL_RENDERER ) ); | |
| 548 printf( "Version : %s\n", glGetString( GL_VERSION ) ); | |
| 549 printf( "Extensions : %s\n", glGetString( GL_EXTENSIONS ) ); | |
| 550 printf("\n"); | |
| 551 | |
| 552 SDL_GL_GetAttribute( SDL_GL_RED_SIZE, &value ); | |
| 553 printf( "SDL_GL_RED_SIZE: requested %d, got %d\n", rgb_size[0],value); | |
| 554 SDL_GL_GetAttribute( SDL_GL_GREEN_SIZE, &value ); | |
| 555 printf( "SDL_GL_GREEN_SIZE: requested %d, got %d\n", rgb_size[1],value); | |
| 556 SDL_GL_GetAttribute( SDL_GL_BLUE_SIZE, &value ); | |
| 557 printf( "SDL_GL_BLUE_SIZE: requested %d, got %d\n", rgb_size[2],value); | |
| 558 SDL_GL_GetAttribute( SDL_GL_DEPTH_SIZE, &value ); | |
| 559 printf( "SDL_GL_DEPTH_SIZE: requested %d, got %d\n", bpp, value ); | |
| 560 SDL_GL_GetAttribute( SDL_GL_DOUBLEBUFFER, &value ); | |
| 561 printf( "SDL_GL_DOUBLEBUFFER: requested 1, got %d\n", value ); | |
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562 if ( fsaa ) { |
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563 SDL_GL_GetAttribute( SDL_GL_MULTISAMPLEBUFFERS, &value ); |
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564 printf( "SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value ); |
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565 SDL_GL_GetAttribute( SDL_GL_MULTISAMPLESAMPLES, &value ); |
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566 printf( "SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa, value ); |
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567 } |
| 0 | 568 |
| 569 /* Set the window manager title bar */ | |
| 570 SDL_WM_SetCaption( "SDL GL test", "testgl" ); | |
| 571 | |
| 572 /* Set the gamma for the window */ | |
| 573 if ( gamma != 0.0 ) { | |
| 574 SDL_SetGamma(gamma, gamma, gamma); | |
| 575 } | |
| 576 | |
| 577 glViewport( 0, 0, w, h ); | |
| 578 glMatrixMode( GL_PROJECTION ); | |
| 579 glLoadIdentity( ); | |
| 580 | |
| 581 glOrtho( -2.0, 2.0, -2.0, 2.0, -20.0, 20.0 ); | |
| 582 | |
| 583 glMatrixMode( GL_MODELVIEW ); | |
| 584 glLoadIdentity( ); | |
| 585 | |
| 586 glEnable(GL_DEPTH_TEST); | |
| 587 | |
| 588 glDepthFunc(GL_LESS); | |
| 589 | |
| 590 glShadeModel(GL_SMOOTH); | |
| 591 | |
| 592 /* Loop until done. */ | |
| 593 start_time = SDL_GetTicks(); | |
| 594 frames = 0; | |
| 595 while( !done ) { | |
| 596 GLenum gl_error; | |
| 597 char* sdl_error; | |
| 598 SDL_Event event; | |
| 599 | |
| 600 /* Do our drawing, too. */ | |
| 601 glClearColor( 0.0, 0.0, 0.0, 1.0 ); | |
| 602 glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | |
| 603 | |
| 604 glBegin( GL_QUADS ); | |
| 605 | |
| 606 #ifdef SHADED_CUBE | |
| 607 glColor3fv(color[0]); | |
| 608 glVertex3fv(cube[0]); | |
| 609 glColor3fv(color[1]); | |
| 610 glVertex3fv(cube[1]); | |
| 611 glColor3fv(color[2]); | |
| 612 glVertex3fv(cube[2]); | |
| 613 glColor3fv(color[3]); | |
| 614 glVertex3fv(cube[3]); | |
| 615 | |
| 616 glColor3fv(color[3]); | |
| 617 glVertex3fv(cube[3]); | |
| 618 glColor3fv(color[4]); | |
| 619 glVertex3fv(cube[4]); | |
| 620 glColor3fv(color[7]); | |
| 621 glVertex3fv(cube[7]); | |
| 622 glColor3fv(color[2]); | |
| 623 glVertex3fv(cube[2]); | |
| 624 | |
| 625 glColor3fv(color[0]); | |
| 626 glVertex3fv(cube[0]); | |
| 627 glColor3fv(color[5]); | |
| 628 glVertex3fv(cube[5]); | |
| 629 glColor3fv(color[6]); | |
| 630 glVertex3fv(cube[6]); | |
| 631 glColor3fv(color[1]); | |
| 632 glVertex3fv(cube[1]); | |
| 633 | |
| 634 glColor3fv(color[5]); | |
| 635 glVertex3fv(cube[5]); | |
| 636 glColor3fv(color[4]); | |
| 637 glVertex3fv(cube[4]); | |
| 638 glColor3fv(color[7]); | |
| 639 glVertex3fv(cube[7]); | |
| 640 glColor3fv(color[6]); | |
| 641 glVertex3fv(cube[6]); | |
| 642 | |
| 643 glColor3fv(color[5]); | |
| 644 glVertex3fv(cube[5]); | |
| 645 glColor3fv(color[0]); | |
| 646 glVertex3fv(cube[0]); | |
| 647 glColor3fv(color[3]); | |
| 648 glVertex3fv(cube[3]); | |
| 649 glColor3fv(color[4]); | |
| 650 glVertex3fv(cube[4]); | |
| 651 | |
| 652 glColor3fv(color[6]); | |
| 653 glVertex3fv(cube[6]); | |
| 654 glColor3fv(color[1]); | |
| 655 glVertex3fv(cube[1]); | |
| 656 glColor3fv(color[2]); | |
| 657 glVertex3fv(cube[2]); | |
| 658 glColor3fv(color[7]); | |
| 659 glVertex3fv(cube[7]); | |
| 660 #else // flat cube | |
| 661 glColor3f(1.0, 0.0, 0.0); | |
| 662 glVertex3fv(cube[0]); | |
| 663 glVertex3fv(cube[1]); | |
| 664 glVertex3fv(cube[2]); | |
| 665 glVertex3fv(cube[3]); | |
| 666 | |
| 667 glColor3f(0.0, 1.0, 0.0); | |
| 668 glVertex3fv(cube[3]); | |
| 669 glVertex3fv(cube[4]); | |
| 670 glVertex3fv(cube[7]); | |
| 671 glVertex3fv(cube[2]); | |
| 672 | |
| 673 glColor3f(0.0, 0.0, 1.0); | |
| 674 glVertex3fv(cube[0]); | |
| 675 glVertex3fv(cube[5]); | |
| 676 glVertex3fv(cube[6]); | |
| 677 glVertex3fv(cube[1]); | |
| 678 | |
| 679 glColor3f(0.0, 1.0, 1.0); | |
| 680 glVertex3fv(cube[5]); | |
| 681 glVertex3fv(cube[4]); | |
| 682 glVertex3fv(cube[7]); | |
| 683 glVertex3fv(cube[6]); | |
| 684 | |
| 685 glColor3f(1.0, 1.0, 0.0); | |
| 686 glVertex3fv(cube[5]); | |
| 687 glVertex3fv(cube[0]); | |
| 688 glVertex3fv(cube[3]); | |
| 689 glVertex3fv(cube[4]); | |
| 690 | |
| 691 glColor3f(1.0, 0.0, 1.0); | |
| 692 glVertex3fv(cube[6]); | |
| 693 glVertex3fv(cube[1]); | |
| 694 glVertex3fv(cube[2]); | |
| 695 glVertex3fv(cube[7]); | |
| 696 #endif /* SHADED_CUBE */ | |
| 697 | |
| 698 glEnd( ); | |
| 699 | |
| 700 glMatrixMode(GL_MODELVIEW); | |
| 701 glRotatef(5.0, 1.0, 1.0, 1.0); | |
| 702 | |
| 703 /* Draw 2D logo onto the 3D display */ | |
| 704 if ( logo ) { | |
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705 if ( USE_DEPRECATED_OPENGLBLIT ) { |
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706 DrawLogoBlit(); |
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707 } else { |
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708 DrawLogoTexture(); |
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709 } |
| 0 | 710 } |
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711 if ( logocursor ) { |
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712 DrawLogoCursor(); |
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713 } |
| 0 | 714 |
| 715 SDL_GL_SwapBuffers( ); | |
| 716 | |
| 717 /* Check for error conditions. */ | |
| 718 gl_error = glGetError( ); | |
| 719 | |
| 720 if( gl_error != GL_NO_ERROR ) { | |
| 721 fprintf( stderr, "testgl: OpenGL error: %d\n", gl_error ); | |
| 722 } | |
| 723 | |
| 724 sdl_error = SDL_GetError( ); | |
| 725 | |
| 726 if( sdl_error[0] != '\0' ) { | |
| 727 fprintf(stderr, "testgl: SDL error '%s'\n", sdl_error); | |
| 728 SDL_ClearError(); | |
| 729 } | |
| 730 | |
| 731 /* Allow the user to see what's happening */ | |
| 732 if ( slowly ) { | |
| 733 SDL_Delay( 20 ); | |
| 734 } | |
| 735 | |
| 736 /* Check if there's a pending event. */ | |
| 737 while( SDL_PollEvent( &event ) ) { | |
| 738 done = HandleEvent(&event); | |
| 739 } | |
| 740 ++frames; | |
| 741 } | |
| 742 | |
| 743 /* Print out the frames per second */ | |
| 744 this_time = SDL_GetTicks(); | |
| 745 if ( this_time != start_time ) { | |
| 746 printf("%2.2f FPS\n", | |
| 747 ((float)frames/(this_time-start_time))*1000.0); | |
| 748 } | |
| 749 | |
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750 if ( global_image ) { |
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751 SDL_FreeSurface(global_image); |
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752 global_image = NULL; |
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753 } |
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754 if ( global_texture ) { |
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755 glDeleteTextures( 1, &global_texture ); |
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756 global_texture = 0; |
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757 } |
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758 if ( cursor_texture ) { |
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759 glDeleteTextures( 1, &cursor_texture ); |
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760 cursor_texture = 0; |
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761 } |
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762 |
| 0 | 763 /* Destroy our GL context, etc. */ |
| 764 SDL_Quit( ); | |
| 765 return(0); | |
| 766 } | |
| 767 | |
| 768 int main(int argc, char *argv[]) | |
| 769 { | |
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770 int i, logo, logocursor; |
| 0 | 771 int numtests; |
| 772 int bpp = 0; | |
| 773 int slowly; | |
| 774 float gamma = 0.0; | |
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775 int noframe = 0; |
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776 int fsaa = 0; |
| 0 | 777 |
| 778 logo = 0; | |
| 779 slowly = 0; | |
| 780 numtests = 1; | |
| 781 for ( i=1; argv[i]; ++i ) { | |
| 782 if ( strcmp(argv[i], "-twice") == 0 ) { | |
| 783 ++numtests; | |
| 784 } | |
| 785 if ( strcmp(argv[i], "-logo") == 0 ) { | |
| 786 logo = 1; | |
|
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787 USE_DEPRECATED_OPENGLBLIT = SDL_FALSE; |
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788 } |
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789 if ( strcmp(argv[i], "-logoblit") == 0 ) { |
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790 logo = 1; |
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791 USE_DEPRECATED_OPENGLBLIT = SDL_TRUE; |
| 0 | 792 } |
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793 if ( strcmp(argv[i], "-logocursor") == 0 ) { |
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794 logocursor = 1; |
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795 } |
| 0 | 796 if ( strcmp(argv[i], "-slow") == 0 ) { |
| 797 slowly = 1; | |
| 798 } | |
| 799 if ( strcmp(argv[i], "-bpp") == 0 ) { | |
| 800 bpp = atoi(argv[++i]); | |
| 801 } | |
| 802 if ( strcmp(argv[i], "-gamma") == 0 ) { | |
| 803 gamma = (float)atof(argv[++i]); | |
| 804 } | |
|
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805 if ( strcmp(argv[i], "-noframe") == 0 ) { |
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806 noframe = 1; |
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807 } |
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Date: Thu, 24 Apr 2003 15:13:47 -0400
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808 if ( strcmp(argv[i], "-fsaa") == 0 ) { |
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809 ++fsaa; |
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Date: Thu, 24 Apr 2003 15:13:47 -0400
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810 } |
| 0 | 811 if ( strncmp(argv[i], "-h", 2) == 0 ) { |
| 812 printf( | |
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813 "Usage: %s [-twice] [-logo] [-logocursor] [-slow] [-bpp n] [-gamma n] [-noframe] [-fsaa] [-fullscreen]\n", |
| 0 | 814 argv[0]); |
| 815 exit(0); | |
| 816 } | |
| 817 } | |
| 818 for ( i=0; i<numtests; ++i ) { | |
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819 RunGLTest(argc, argv, logo, logocursor, slowly, bpp, gamma, noframe, fsaa); |
| 0 | 820 } |
| 821 return 0; | |
| 822 } | |
| 823 | |
| 824 #else /* HAVE_OPENGL */ | |
| 825 | |
| 826 int main(int argc, char *argv[]) | |
| 827 { | |
| 828 printf("No OpenGL support on this system\n"); | |
| 829 return 1; | |
| 830 } | |
| 831 | |
| 832 #endif /* HAVE_OPENGL */ |