-no-srgb option

[vrfileman] / src / color.cc

diff --git a/src/color.cc b/src/color.cc
new file mode 100644 (file)
index 0000000..ae27f89
--- /dev/null
+++ b/src/color.cc
@@ -0,0 +1,19 @@
+#include "color.h"
+#include "opt.h"
+
+Color color(float r, float g, float b)
+{
+       return opt.srgb ? Color(r, g, b) : linear_to_srgb(Color(r, g, b));
+}
+
+Color linear_to_srgb(const Color &c)
+{
+       const float inv_gamma = 1.0f / 2.2f;
+       return Color(pow(c.x, inv_gamma), pow(c.y, inv_gamma), pow(c.z, inv_gamma));
+}
+
+Color srgb_to_linear(const Color &c)
+{
+       const float gamma = 2.2f;
+       return Color(pow(c.x, gamma), pow(c.y, gamma), pow(c.z, gamma));
+}