Realtime Compositor: Add basic color nodes

This patch implements the following nodes for the realtime compositor:

- Alpha over node.
- Bright contrast node.
- Color balance node.
- Color correction node.
- Exposure node.
- Gamma node.
- Hue correct node.
- Hue saturation value node.
- Invert node.
- Mix node.
- Posterize node.
- Time curve node.
- Vector curve node.

Differential Revision: https://developer.blender.org/D15228

Reviewed By: Clement Foucault

2 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/imbuf/IMB_colormanagement.h b/source/blender/imbuf/IMB_colormanagement.h
index 0818dd653a1..2fb1d814c83 100644
--- a/source/blender/imbuf/IMB_colormanagement.h
+++ b/source/blender/imbuf/IMB_colormanagement.h
@@ -56,6 +56,8 @@ bool IMB_colormanagement_space_name_is_data(const char *name);
 bool IMB_colormanagement_space_name_is_scene_linear(const char *name);
 bool IMB_colormanagement_space_name_is_srgb(const char *name);
 
+BLI_INLINE void IMB_colormanagement_get_luminance_coefficients(float r_rgb[3]);
+
 /**
  * Convert a float RGB triplet to the correct luminance weighted average.
  *
diff --git a/source/blender/imbuf/intern/colormanagement_inline.c b/source/blender/imbuf/intern/colormanagement_inline.c
index 668307ec802..3c6c0f5fd0a 100644
--- a/source/blender/imbuf/intern/colormanagement_inline.c
+++ b/source/blender/imbuf/intern/colormanagement_inline.c
@@ -11,6 +11,11 @@
 #include "BLI_math_vector.h"
 #include "IMB_colormanagement_intern.h"
 
+void IMB_colormanagement_get_luminance_coefficients(float r_rgb[3])
+{
+  copy_v3_v3(r_rgb, imbuf_luma_coefficients);
+}
+
 float IMB_colormanagement_get_luminance(const float rgb[3])
 {
   return dot_v3v3(imbuf_luma_coefficients, rgb);