diff options
Diffstat (limited to 'opencl')
| -rw-r--r-- | opencl/posterize.cl | 28 | ||||
| -rw-r--r-- | opencl/posterize.cl.h | 30 |
2 files changed, 58 insertions, 0 deletions
diff --git a/opencl/posterize.cl b/opencl/posterize.cl new file mode 100644 index 00000000..5ba9e8b2 --- /dev/null +++ b/opencl/posterize.cl @@ -0,0 +1,28 @@ +/* This file is an image processing operation for GEGL + * + * GEGL is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 3 of the License, or (at your option) any later version. + * + * GEGL is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with GEGL; if not, see <http://www.gnu.org/licenses/>. + * + * Copyright 2013 Carlos Zubieta <czubieta.dev@gmail.com> + */ + +__kernel void cl_posterize(__global const float4 *in, + __global float4 *out, + float levels) +{ + int gid = get_global_id(0); + float4 in_v = in[gid]; + + in_v.xyz = trunc(in_v.xyz * levels + (float3)(0.5f)) / levels; + out[gid] = in_v; +} diff --git a/opencl/posterize.cl.h b/opencl/posterize.cl.h new file mode 100644 index 00000000..e7717c59 --- /dev/null +++ b/opencl/posterize.cl.h @@ -0,0 +1,30 @@ +static const char* posterize_cl_source = +"/* This file is an image processing operation for GEGL \n" +" * \n" +" * GEGL is free software; you can redistribute it and/or \n" +" * modify it under the terms of the GNU Lesser General Public \n" +" * License as published by the Free Software Foundation; either \n" +" * version 3 of the License, or (at your option) any later version. \n" +" * \n" +" * GEGL is distributed in the hope that it will be useful, \n" +" * but WITHOUT ANY WARRANTY; without even the implied warranty of \n" +" * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU \n" +" * Lesser General Public License for more details. \n" +" * \n" +" * You should have received a copy of the GNU Lesser General Public \n" +" * License along with GEGL; if not, see <http://www.gnu.org/licenses/>. \n" +" * \n" +" * Copyright 2013 Carlos Zubieta <czubieta.dev@gmail.com> \n" +" */ \n" +" \n" +"__kernel void cl_posterize(__global const float4 *in, \n" +" __global float4 *out, \n" +" float levels) \n" +"{ \n" +" int gid = get_global_id(0); \n" +" float4 in_v = in[gid]; \n" +" \n" +" in_v.xyz = trunc(in_v.xyz * levels + (float3)(0.5f)) / levels; \n" +" out[gid] = in_v; \n" +"} \n" +; |