diff --git a/include/blt/gfx/texture.h b/include/blt/gfx/texture.h
index efc7e40..68b1be3 100644
--- a/include/blt/gfx/texture.h
+++ b/include/blt/gfx/texture.h
@@ -171,7 +171,7 @@ namespace blt::gfx
             texture_gl2D(int width, int height, GLint colorMode = GL_RGBA8);
             
             void upload(void* data, GLint dataColorMode = GL_RGBA, int level = 0, int x_offset = 0, int y_offset = 0, int sub_width = -1,
-                        int sub_height = -1) const;
+                        int sub_height = -1, GLint dataMode = GL_UNSIGNED_BYTE) const;
             
             void upload(const texture_file& tex_file) const;
             
diff --git a/src/blt/gfx/texture.cpp b/src/blt/gfx/texture.cpp
index c2ec470..2f7504d 100644
--- a/src/blt/gfx/texture.cpp
+++ b/src/blt/gfx/texture.cpp
@@ -95,14 +95,15 @@ void blt::gfx::texture_gl::setDefaults() const
 #endif
 }
 
-void blt::gfx::texture_gl2D::upload(void* data, GLint dataColorMode, int level, int x_offset, int y_offset, int sub_width, int sub_height) const
+void blt::gfx::texture_gl2D::upload(void* data, GLint dataColorMode, int level, int x_offset, int y_offset, int sub_width, int sub_height,
+                                    GLint dataMode) const
 {
     if (sub_width < 0)
         sub_width = m_width;
     if (sub_height < 0)
         sub_height = m_height;
     bind();
-    glTexSubImage2D(textureBindType, level, x_offset, y_offset, sub_width, sub_height, dataColorMode, GL_UNSIGNED_BYTE, data);
+    glTexSubImage2D(textureBindType, level, x_offset, y_offset, sub_width, sub_height, dataColorMode, dataMode, data);
     unbind();
 }