Mercurial > sdl-ios-xcode
view test/testpower.c @ 3707:d8308bc267bc
Adam Strzelecki to SDL
When graphic card has no GL_ARB_texture_rectangle YUV textures mapped with SDL_RenderCopy are stretched 2x horizontally, so only left half of texture is visible. This is due:
data->texw = (GLfloat) (texture->w) / texture_w;
data->texh = (GLfloat) texture->h / texture_h;
But afterwards texture_w /= 2 for YUV texture, but data->texw stays as it was before, while it should be multiplied 2x.
This bug can be seen in any program setting env variables: GL_APPLE_ycbcr_422=0 GL_EXT_texture_rectangle=0 GL_ARB_texture_rectangle=0
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 17 Feb 2010 04:42:52 +0000 |
parents | 51750b7a966f |
children |
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/* Simple test of power subsystem. */ #include <stdio.h> #include "SDL.h" static void report_power(void) { int seconds, percent; const SDL_PowerState state = SDL_GetPowerInfo(&seconds, &percent); char *statestr = NULL; printf("SDL-reported power info...\n"); switch (state) { case SDL_POWERSTATE_UNKNOWN: statestr = "Unknown"; break; case SDL_POWERSTATE_ON_BATTERY: statestr = "On battery"; break; case SDL_POWERSTATE_NO_BATTERY: statestr = "No battery"; break; case SDL_POWERSTATE_CHARGING: statestr = "Charging"; break; case SDL_POWERSTATE_CHARGED: statestr = "Charged"; break; default: statestr = "!!API ERROR!!"; break; } printf("State: %s\n", statestr); if (percent == -1) { printf("Percent left: unknown\n"); } else { printf("Percent left: %d%%\n", percent); } if (seconds == -1) { printf("Time left: unknown\n"); } else { printf("Time left: %d minutes, %d seconds\n", (int) (seconds / 60), (int) (seconds % 60)); } } int main(int argc, char *argv[]) { if (SDL_Init(SDL_INIT_VIDEO) == -1) { fprintf(stderr, "SDL_Init() failed: %s\n", SDL_GetError()); return 1; } report_power(); SDL_Quit(); return 0; } /* end of testpower.c ... */