From: Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
Date: Sun, 2 Jan 2022 18:52:47 +0000 (+0100)
Subject: gradient stop premult alpha
X-Git-Tag: v0.3.0-beta~53
X-Git-Url: https://git.osiis.dedyn.io/?a=commitdiff_plain;h=71d7c0326962a5d42269d68e1024a5bd6e4a0e61;p=jp%2Fvkvg.git

gradient stop premult alpha
---

diff --git a/src/vkvg_pattern.c b/src/vkvg_pattern.c
index b383a0b..06ae0b7 100644
--- a/src/vkvg_pattern.c
+++ b/src/vkvg_pattern.c
@@ -132,7 +132,11 @@ vkvg_status_t vkvg_pattern_add_color_stop (VkvgPattern pat, float offset, float
 		return VKVG_STATUS_PATTERN_TYPE_MISMATCH;
 
 	vkvg_gradient_t* grad = (vkvg_gradient_t*)pat->data;
+#ifdef VKVG_PREMULT_ALPHA
+	vkvg_color_t c = {a*r,a*g,a*b,a};
+#else
 	vkvg_color_t c = {r,g,b,a};
+#endif
 	grad->colors[grad->count] = c;
 	grad->stops[grad->count] = offset;
 	grad->count++;