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Lines 92-113
static void CalculateGammaFromRamp(float *gamma, Uint16 *ramp)
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int SDL_SetGamma(float red, float green, float blue) |
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int SDL_SetGamma(float red, float green, float blue) |
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{ |
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{ |
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int succeeded; |
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int succeeded = -1; |
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SDL_VideoDevice *video = current_video; |
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SDL_VideoDevice *video = current_video; |
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SDL_VideoDevice *this = current_video; |
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SDL_VideoDevice *this = current_video; |
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succeeded = -1; |
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if ( video->SetGamma ) { |
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/* Prefer using SetGammaRamp(), as it's more flexible */ |
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{ |
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Uint16 ramp[3][256]; |
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CalculateGammaRamp(red, ramp[0]); |
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CalculateGammaRamp(green, ramp[1]); |
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CalculateGammaRamp(blue, ramp[2]); |
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succeeded = SDL_SetGammaRamp(ramp[0], ramp[1], ramp[2]); |
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} |
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if ( (succeeded < 0) && video->SetGamma ) { |
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SDL_ClearError(); |
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succeeded = video->SetGamma(this, red, green, blue); |
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succeeded = video->SetGamma(this, red, green, blue); |
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} |
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} |
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return succeeded; |
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return succeeded; |
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