Adding gif and sprite animation examples.

-Added new UpdateTextureUnsafe method to support it.

raylib/raylib.go

@@ -1090,8 +1090,8 @@ const (
 // Image type, bpp always RGBA (32bit)
 // NOTE: Data stored in CPU memory (RAM)
 type Image struct {
-	// Image raw data
-	data unsafe.Pointer
+	// Image raw Data
+	Data unsafe.Pointer
 	// Image base width
 	Width int32
 	// Image base height

raylib/rtextures.go

@@ -246,6 +246,14 @@ func UpdateTexture(texture Texture2D, pixels []color.RGBA) {
 	C.UpdateTexture(*ctexture, cpixels)
 }
 
+// UpdateTexture - Update GPU texture with new data
+// NOTE: pixels data must match texture.format
+func UpdateTextureUnsafe(texture Texture2D, pixels unsafe.Pointer) {
+	ctexture := texture.cptr()
+	cpixels := pixels
+	C.UpdateTexture(*ctexture, cpixels)
+}
+
 // UpdateTextureRec - Update GPU texture rectangle with new data
 func UpdateTextureRec(texture Texture2D, rec Rectangle, pixels []color.RGBA) {
 	ctexture := texture.cptr()