Lines Matching refs:alpha
158 int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
923 float alpha[4], beta[4], theta[4], gamma[4];
925 alpha[0] = c * blk[2 * step];
926 alpha[1] = f * blk[2 * step];
927 alpha[2] = c * blk[6 * step];
928 alpha[3] = f * blk[6 * step];
938 theta[1] = alpha[0] + alpha[3];
939 theta[2] = alpha[1] - alpha[2];
1376 /* todo: change this when a floating point pixel format with luma with alpha is implemented */
2071 /* todo: change this when a floating point pixel format with luma with alpha is implemented */