From 7cfdffcdf86f34650f881f02bc05e9921fde87a7 Mon Sep 17 00:00:00 2001
From: Alexander Holland <alexander.holland@live.de>
Date: Sun, 15 Apr 2018 22:37:23 +0200
Subject: [PATCH] blit and blend fix when dst<Vector2

---
 core/image.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/core/image.cpp b/core/image.cpp
index 2ac8ffea56e..9e7d990ccdf 100644
--- a/core/image.cpp
+++ b/core/image.cpp
@@ -1598,6 +1598,12 @@ void Image::blit_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Po
 	ERR_FAIL_COND(format != p_src->format);
 
 	Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+
+	if (p_dest.x < 0)
+		clipped_src_rect.position.x = ABS(p_dest.x);
+	if (p_dest.y < 0)
+		clipped_src_rect.position.y = ABS(p_dest.y);
+
 	if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
 		return;
 
@@ -1646,6 +1652,12 @@ void Image::blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, co
 	ERR_FAIL_COND(format != p_src->format);
 
 	Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+
+	if (p_dest.x < 0)
+		clipped_src_rect.position.x = ABS(p_dest.x);
+	if (p_dest.y < 0)
+		clipped_src_rect.position.y = ABS(p_dest.y);
+
 	if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
 		return;
 
@@ -1697,6 +1709,12 @@ void Image::blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const P
 	ERR_FAIL_COND(format != p_src->format);
 
 	Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+
+	if (p_dest.x < 0)
+		clipped_src_rect.position.x = ABS(p_dest.x);
+	if (p_dest.y < 0)
+		clipped_src_rect.position.y = ABS(p_dest.y);
+
 	if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
 		return;
 
@@ -1745,6 +1763,12 @@ void Image::blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, c
 	ERR_FAIL_COND(format != p_src->format);
 
 	Rect2i clipped_src_rect = Rect2i(0, 0, p_src->width, p_src->height).clip(p_src_rect);
+
+	if (p_dest.x < 0)
+		clipped_src_rect.position.x = ABS(p_dest.x);
+	if (p_dest.y < 0)
+		clipped_src_rect.position.y = ABS(p_dest.y);
+
 	if (clipped_src_rect.size.x <= 0 || clipped_src_rect.size.y <= 0)
 		return;