Hi, I'd like to use 16 byte float pixels for RGA, Lab and XYZ conversions - so I tried defining these:
#define TYPE_XYZA_FLT (FLOAT_SH(1)|COLORSPACE_SH(PT_XYZ)|EXTRA_SH(1)|CHANNELS_SH(3)|BYTES_SH(4)) #define TYPE_LabA_FLT (FLOAT_SH(1)|COLORSPACE_SH(PT_Lab)|EXTRA_SH(1)|CHANNELS_SH(3)|BYTES_SH(4)) #define TYPE_RGBA_FLT (FLOAT_SH(1)|COLORSPACE_SH(PT_RGB)|EXTRA_SH(1)|CHANNELS_SH(3)|BYTES_SH(4)) But it looks like something is wrong. Using the LCMS built in formats (TYPE_RGB_FLT, TYPE_XYZ_FLT, TYPE_Lab_FLT) I get the following: sRGB -> XYZ -> sRGB 1.000000, 1.000000, 1.000000 0.964200, 1.000000, 0.824900 1.000000, 1.000000, 1.000000 sRGB -> Lab -> sRGB 1.000000, 1.000000, 1.000000 100.000000, 0.000008, -0.000008 1.000000, 1.000000, 1.000000 Lab -> XYZ -> Lab 100.000000, 0.000000, 0.000000 0.964200, 1.000000, 0.824900 100.000000, 0.000008, 0.000008 Using the formats I defined (TYPE_XYZA_FLT, TYPE_LabA_FLT, TYPE_RGBA_FLT): sRGB -> XYZ -> sRGB 1.000000, 1.000000, 1.000000, 0.000000 0.482107, 0.500008, 0.412456, 0.000000 1.000000, 1.000000, 1.000000, 0.000000 sRGB -> Lab -> sRGB 1.000000, 1.000000, 1.000000, 0.000000 1.000000, 0.501961, 0.501961, 0.000000 1.000000, 1.000000, 1.000000, 0.000000 Lab -> XYZ -> Lab 100.000000, 0.000000, 0.000000, 0.000000 307598.437500, 321873.781250, 271461.625000, 0.000000 100.000000, -0.000001, 0.000000, 0.000000 Any ideas what I'm doing wrong? Thanks Mark
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