Fix T43454 color is washed out in textured brushes

Yet another color space issue, we multiplied texture color with srgb
brush color and retrasnformed it to srgb. Now use the linear brush color
for the multiplication.

1 files changed, 4 insertions, 3 deletions

diff --git a/source/blender/editors/sculpt_paint/paint_image_proj.c b/source/blender/editors/sculpt_paint/paint_image_proj.c
index 8abffa17168..34a10963050 100644
--- a/source/blender/editors/sculpt_paint/paint_image_proj.c
+++ b/source/blender/editors/sculpt_paint/paint_image_proj.c
@@ -4161,13 +4161,14 @@ static void do_projectpaint_draw(ProjPaintState *ps, ProjPixel *projPixel, const
 	float rgb[3];
 	unsigned char rgba_ub[4];
 
-	copy_v3_v3(rgb, ps->paint_color);
-
 	if (ps->is_texbrush) {
-		mul_v3_v3(rgb, texrgb);
+		mul_v3_v3v3(rgb, texrgb, ps->paint_color_linear);
 		/* TODO(sergey): Support texture paint color space. */
 		linearrgb_to_srgb_v3_v3(rgb, rgb);
 	}
+	else {
+		copy_v3_v3(rgb, ps->paint_color);
+	}
 
 	rgb_float_to_uchar(rgba_ub, rgb);
 	rgba_ub[3] = f_to_char(mask);