upscaleFloat() [2/2]

u8 fl::upscaleFloat	(	u8	v00,
		u8	v10,
		u8	v01,
		u8	v11,
		float	dx,
		float	dy )

Definition at line 246 of file upscale.cpp.

                                                             {
    float dx_inv = 1.0f - dx;
    float dy_inv = 1.0f - dy;
 
    // Calculate the weights for each corner
    float w00 = dx_inv * dy_inv;
    float w10 = dx * dy_inv;
    float w01 = dx_inv * dy;
    float w11 = dx * dy;
 
    // Compute the weighted sum
    float sum = v00 * w00 + v10 * w10 + v01 * w01 + v11 * w11;
 
    // Clamp the result to [0, 255] and round
    u8 result = static_cast<u8>(sum + 0.5f);
 
    return result;
}

Referenced by fl::ScaleUp::expand(), upscaleArbitraryFloat(), and upscaleFloat().

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