[Bf-blender-cvs] [e616cd5706e] master: Cycles: Add utility function to convert float4 color from srgb to linear
Sergey Sharybin
noreply at git.blender.org
Wed May 3 11:28:39 CEST 2017
Commit: e616cd5706ef359aaed481db2e4d31a3fe16cd3b
Author: Sergey Sharybin
Date: Wed May 3 11:19:40 2017 +0200
Branches: master
https://developer.blender.org/rBe616cd5706ef359aaed481db2e4d31a3fe16cd3b
Cycles: Add utility function to convert float4 color from srgb to linear
It will use SSE2 optimized version when is possible.
===================================================================
M intern/cycles/util/util_color.h
===================================================================
diff --git a/intern/cycles/util/util_color.h b/intern/cycles/util/util_color.h
index 4d673dc34d8..114f0f9bf79 100644
--- a/intern/cycles/util/util_color.h
+++ b/intern/cycles/util/util_color.h
@@ -158,16 +158,7 @@ ccl_device float3 xyz_to_rgb(float x, float y, float z)
}
#ifndef __KERNEL_OPENCL__
-
-ccl_device float3 color_srgb_to_scene_linear(float3 c)
-{
- return make_float3(
- color_srgb_to_scene_linear(c.x),
- color_srgb_to_scene_linear(c.y),
- color_srgb_to_scene_linear(c.z));
-}
-
-#ifdef __KERNEL_SSE2__
+# ifdef __KERNEL_SSE2__
/*
* Calculate initial guess for arg^exp based on float representation
* This method gives a constant bias, which can be easily compensated by multiplication with bias_coeff.
@@ -222,17 +213,40 @@ ccl_device ssef color_srgb_to_scene_linear(const ssef &c)
ssef gte = fastpow24(gtebase);
return select(cmp, lt, gte);
}
+# endif /* __KERNEL_SSE2__ */
+
+ccl_device float3 color_srgb_to_scene_linear(float3 c)
+{
+ return make_float3(color_srgb_to_scene_linear(c.x),
+ color_srgb_to_scene_linear(c.y),
+ color_srgb_to_scene_linear(c.z));
+}
+
+ccl_device float4 color_srgb_to_scene_linear(float4 c)
+{
+#ifdef __KERNEL_SSE2__
+ ssef r_ssef;
+ float4 &r = (float4 &)r_ssef;
+ r = c;
+ r_ssef = color_srgb_to_scene_linear(r_ssef);
+ r.w = c.w;
+ return r;
+#else
+ return make_float4(color_srgb_to_scene_linear(c.x),
+ color_srgb_to_scene_linear(c.y),
+ color_srgb_to_scene_linear(c.z),
+ c.w);
#endif
+}
ccl_device float3 color_scene_linear_to_srgb(float3 c)
{
- return make_float3(
- color_scene_linear_to_srgb(c.x),
- color_scene_linear_to_srgb(c.y),
- color_scene_linear_to_srgb(c.z));
+ return make_float3(color_scene_linear_to_srgb(c.x),
+ color_scene_linear_to_srgb(c.y),
+ color_scene_linear_to_srgb(c.z));
}
-#endif
+#endif /* __KERNEL_OPENCL__ */
ccl_device float linear_rgb_to_gray(float3 c)
{
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