[gegl] opencl: make color conversions work with OpenCL1.0

[Massimo Valentini <mvalentini src gnome org>]

commit 45a2775ebd0c68e6de2ab4779643d0daac6136cb
Author: Massimo Valentini <mvalentini src gnome org>
Date:   Wed Nov 21 11:06:42 2012 +0100

    opencl: make color conversions work with OpenCL1.0
    
    using the runtime preprocessor

 gegl/opencl/gegl-cl-color-kernel.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gegl/opencl/gegl-cl-color-kernel.h b/gegl/opencl/gegl-cl-color-kernel.h
index 72e9f34..bae5024 100644
--- a/gegl/opencl/gegl-cl-color-kernel.h
+++ b/gegl/opencl/gegl-cl-color-kernel.h
@@ -269,9 +269,15 @@ static const char* kernel_color_source =
 "  float4 in_v  = in[gid];                                                                \n"
 "  float4 out_v;                                                                          \n"
 "                                                                                         \n"
+"#if (__OPENCL_VERSION__ != CL_VERSION_1_0)                                               \n"
 "  float3 rgb = (float3)(linear_to_gamma_2_2(in_v.x),                                     \n"
 "                        linear_to_gamma_2_2(in_v.y),                                     \n"
 "                        linear_to_gamma_2_2(in_v.z));                                    \n"
+"#else                                                                                    \n"
+"  float4 rgb = (float4)(linear_to_gamma_2_2(in_v.x),                                     \n"
+"                        linear_to_gamma_2_2(in_v.y),                                     \n"
+"                        linear_to_gamma_2_2(in_v.z), 1.0f);                              \n"
+"#endif                                                                                   \n"
 "                                                                                         \n"
 "  out_v = (float4)( 0.299f    * rgb.x + 0.587f    * rgb.y + 0.114f    * rgb.z,           \n"
 "                   -0.168736f * rgb.x - 0.331264f * rgb.y + 0.5f      * rgb.z,           \n"