diff options
| -rw-r--r-- | opencl/posterize.cl | 28 | ||||
| -rw-r--r-- | opencl/posterize.cl.h | 30 | ||||
| -rw-r--r-- | operations/common/posterize.c | 44 |
3 files changed, 101 insertions, 1 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" +; diff --git a/operations/common/posterize.c b/operations/common/posterize.c index 0fcca178..f5a15924 100644 --- a/operations/common/posterize.c +++ b/operations/common/posterize.c @@ -64,6 +64,46 @@ static gboolean process (GeglOperation *operation, return TRUE; } +#include "opencl/gegl-cl.h" +#include "opencl/posterize.cl.h" + +GEGL_CL_STATIC + +static gboolean +cl_process (GeglOperation *operation, + cl_mem in, + cl_mem out, + size_t global_worksize, + const GeglRectangle *roi, + gint level) +{ + GeglChantO *o = GEGL_CHANT_PROPERTIES (operation); + cl_float levels = o->levels; + + GEGL_CL_BUILD(posterize, "cl_posterize") + + { + cl_int cl_err = 0; + + GEGL_CL_ARG_START(cl_data->kernel[0]) + GEGL_CL_ARG(cl_mem, in) + GEGL_CL_ARG(cl_mem, out) + GEGL_CL_ARG(cl_float, levels) + GEGL_CL_ARG_END + + cl_err = gegl_clEnqueueNDRangeKernel(gegl_cl_get_command_queue (), + cl_data->kernel[0], 1, + NULL, &global_worksize, NULL, + 0, NULL, NULL); + CL_CHECK; + } + + return FALSE; + +error: + return TRUE; +} + static void gegl_chant_class_init (GeglChantClass *klass) { @@ -73,7 +113,9 @@ gegl_chant_class_init (GeglChantClass *klass) operation_class = GEGL_OPERATION_CLASS (klass); point_filter_class = GEGL_OPERATION_POINT_FILTER_CLASS (klass); - point_filter_class->process = process; + operation_class->opencl_support = TRUE; + point_filter_class->process = process; + point_filter_class->cl_process = cl_process; gegl_operation_class_set_keys (operation_class, "name" , "gegl:posterize", |