fix [#31530] Project paint with Clipping border gives opaque background

draw clipping box alpha 0 so reprojection and rendering show the background as alpha 0.

1 files changed, 21 insertions, 2 deletions

diff --git a/source/blender/editors/interface/resources.c b/source/blender/editors/interface/resources.c
index bf57dda44bf..9d66c9ea2e1 100644
--- a/source/blender/editors/interface/resources.c
+++ b/source/blender/editors/interface/resources.c
@@ -1028,7 +1028,7 @@ int UI_GetThemeValue(int colorid)
 
 
 // get the color, range 0.0-1.0
-void UI_GetThemeColor3fv(int colorid, float *col)
+void UI_GetThemeColor3fv(int colorid, float col[3])
 {
 	const unsigned char *cp;
 	
@@ -1039,7 +1039,7 @@ void UI_GetThemeColor3fv(int colorid, float *col)
 }
 
 // get the color, range 0.0-1.0, complete with shading offset
-void UI_GetThemeColorShade3fv(int colorid, int offset, float *col)
+void UI_GetThemeColorShade3fv(int colorid, int offset, float col[3])
 {
 	int r, g, b;
 	const unsigned char *cp;
@@ -1058,6 +1058,25 @@ void UI_GetThemeColorShade3fv(int colorid, int offset, float *col)
 	col[2] = ((float)b) / 255.0f;
 }
 
+void UI_GetThemeColorShade3ubv(int colorid, int offset, unsigned char col[3])
+{
+	int r, g, b;
+	const unsigned char *cp;
+
+	cp = UI_ThemeGetColorPtr(theme_active, theme_spacetype, colorid);
+
+	r = offset + (int) cp[0];
+	CLAMP(r, 0, 255);
+	g = offset + (int) cp[1];
+	CLAMP(g, 0, 255);
+	b = offset + (int) cp[2];
+	CLAMP(b, 0, 255);
+
+	col[0] = r;
+	col[1] = g;
+	col[2] = b;
+}
+
 // get the color, in char pointer
 void UI_GetThemeColor3ubv(int colorid, unsigned char col[3])
 {