Bugfix: don't render textures with dimension of 0

At least 'invertRGB()' does not like 'width' or 'height' being 0.
341b2f43e511e39dd was triggered by this problem as well.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/FbTk/TextureRender.cc b/src/FbTk/TextureRender.cc
index 7b808af..c66dfa7 100644
--- a/src/FbTk/TextureRender.cc
+++ b/src/FbTk/TextureRender.cc
@@ -1349,7 +1349,10 @@ TextureRender::~TextureRender() {
 
 
 Pixmap TextureRender::render(const FbTk::Texture &texture) {
-    if (texture.pixmap().drawable() != 0)
+
+    if (width == 0 || height == 0)
+        return None;
+    else if (texture.pixmap().drawable() != 0)
         return renderPixmap(texture);
     else if (texture.type() & FbTk::Texture::PARENTRELATIVE)
         return ParentRelative;