3 Commits

Author	SHA1	Message	Date
Mirco Miranda	402dfb5de3	psd: Fix alpha blending ... PSD files are saved with as alpha premultiplied. The problem is that alpha refers to white instead of black so it requires transformation formulas. Then, to conver PS premultiplied to QImage premultiplied you have to use the following formula: * V = Alpha + Vps - Max (C, M, Y, K, R, G, B, Gray, L\* components) * V = Vps + (Alpha - Max + 1) / 2 (a\*, b\* components) Where Max is the maximum value depending on the image depth and Vps is the valued read from the file.	2023-03-29 17:55:55 +00:00
Gary Wang	938b8126b5	No longer descease color depth to 8 for 16 bit uncompressed PSD files	2020-11-10 13:03:37 +08:00
Gary Wang	b742cb7cc7	Return unsupported when reading 16bit RLE compressed PSD files	2020-11-01 11:50:48 +08:00