Re: [Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-10 Thread Gerhard Fuernkranz
Create an RGB - RGB transform and re-sample it on a regular grid, for instance like below (code is a bit older, still using lcms1, though). Regards, Gerhard #define GRIDPOINTS 64 static GLushort clut[GRIDPOINTS][GRIDPOINTS][GRIDPOINTS][3]; static GLuint img_texture; static GLuint

Re: [Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-10 Thread marti . maria
Quoting Gerhard Fuernkranz nospam...@gmx.de: Create an RGB - RGB transform and re-sample it on a regular grid, for instance like below (code is a bit older, still using lcms1, though). Great idea. lcms2 works fine in this way. Please note in lcms2 you can get float, double or half float

Re: [Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-10 Thread Gerhard Fuernkranz
Am 11.03.2015 um 00:36 schrieb marti.ma...@littlecms.com: Quoting Gerhard Fuernkranz nospam...@gmx.de: Create an RGB - RGB transform and re-sample it on a regular grid, for instance like below (code is a bit older, still using lcms1, though). Great idea. lcms2 works fine in this way. Please

Re: [Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-07 Thread jcupitt
On 5 March 2015 at 16:10, Noel Carboni ncarb...@prodigitalsoftware.com wrote: Why in this day and age don't operating systems provide color-management services beyond being a storage system for profiles? For decades I've been wondering. They do, but they often give slightly different results,

Re: [Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-06 Thread marti . maria
Quoting Noel Carboni ncarb...@prodigitalsoftware.com: Speaking of what the Adobe Color Engine can do... Is anyone considering porting Little CMS transformations to run on a GPU? :-) Hi, The trick is to use lcms2 to create a 3D Lut and then use the GPU and trilinear interpolation. I

[Lcms-user] Adobe's Color Engine, GPUs, And Other Rambling

2015-03-05 Thread Noel Carboni
A recent message reminded me... Anecdotally, I've had my (Little CMS-based) products occasionally produce different color than Adobe Photoshop. Each time I've investigated, I've learned that ACE just isn't perfect. Okay, a couple of times I admit it was me setting things up wrongly for