From: Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
Date: Tue, 11 Jan 2022 13:55:16 +0000 (+0100)
Subject: prevent trying to create surface with dim <= 0
X-Git-Tag: v0.3.0-beta~24
X-Git-Url: https://git.osiis.dedyn.io/?a=commitdiff_plain;h=6e976deab1cf766d66f46d5e54da32f72d399916;p=jp%2Fvkvg.git

prevent trying to create surface with dim <= 0
---

diff --git a/src/vkvg_internal.h b/src/vkvg_internal.h
index ec82a74..fa590c6 100644
--- a/src/vkvg_internal.h
+++ b/src/vkvg_internal.h
@@ -61,6 +61,12 @@
 #define ROUND_DOWN(v,p) (floorf(v * p) / p)
 #define EQUF(a, b) (fabsf(a-b)<=FLT_EPSILON)
 
+#ifndef MAX
+	#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+#ifndef MIN
+	#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
 
 #include "cross_os.h"
 #include "cross_mutex.h"
diff --git a/src/vkvg_surface.c b/src/vkvg_surface.c
index c059136..ed9a19c 100644
--- a/src/vkvg_surface.c
+++ b/src/vkvg_surface.c
@@ -29,6 +29,7 @@
 #include "stb_image_write.h"
 #include "vkh_image.h"
 
+#define max(x,y)
 void vkvg_surface_clear (VkvgSurface surf) {
 	_clear_surface(surf, VK_IMAGE_ASPECT_STENCIL_BIT|VK_IMAGE_ASPECT_COLOR_BIT);
 }
@@ -37,8 +38,8 @@ VkvgSurface vkvg_surface_create (VkvgDevice dev, uint32_t width, uint32_t height
 	if (!surf)
 		return NULL;
 
-	surf->width = width;
-	surf->height = height;
+	surf->width = MAX(1, width);
+	surf->height = MAX(1, height);
 	surf->new = true;//used to clear all attacments on first render pass
 
 	_create_surface_images (surf);
@@ -77,8 +78,8 @@ VkvgSurface vkvg_surface_create_from_bitmap (VkvgDevice dev, unsigned char* img,
 	if (!surf)
 		return NULL;
 
-	surf->width = width;
-	surf->height = height;
+	surf->width = MAX(1, width);
+	surf->height = MAX(1, height);
 
 	_create_surface_images (surf);