Texture now checks for transparent pixels

texture.go

@@ -4,9 +4,10 @@ import "image"
 import "git.tebibyte.media/tomo/tomo"
 
 type texture struct {
-	pix    []uint8
-	stride int
-	rect   image.Rectangle
+	pix         []uint8
+	stride      int
+	rect        image.Rectangle
+	transparent bool
 }
 
 func (backend *Backend) NewTexture (source image.Image) tomo.Texture {
@@ -27,6 +28,10 @@ func (backend *Backend) NewTexture (source image.Image) tomo.Texture {
 		texture.pix[index + 2] = uint8(r >> 8)
 		texture.pix[index + 3] = uint8(a >> 8)
 		index += 4
+
+		if a != 0xFFFF {
+			texture.transparent = true
+		}
 	}}
 	
 	return texture