diff --git a/uppsrc/GLDraw/Code.cpp b/uppsrc/GLDraw/Code.cpp
index 3116bd4fc..32540e2f2 100644
--- a/uppsrc/GLDraw/Code.cpp
+++ b/uppsrc/GLDraw/Code.cpp
@@ -114,7 +114,6 @@ GLCode& GLCode::Uniform(const char *id, double a, double b, double c, double d)
 	return *this;
 }
 
-
 GLCode& GLCode::operator()(const char *id, Color c, double alpha)
 {
 	return Uniform(GetUniform(id), c, alpha);
@@ -125,4 +124,15 @@ GLCode& GLCode::operator()(int i, Color c, double alpha)
 	return Uniform(i, c.GetR() / 255.0f, c.GetG() / 255.0f, c.GetB() / 255.0f, alpha);
 }
 
+GLCode& GLCode::Mat4(int i, float *mat4)
+{
+	glUniformMatrix4fv(i, 1, GL_FALSE, mat4);
+	return *this;
+}
+
+GLCode& GLCode::Mat4(const char *id, float *mat4)
+{
+	return Mat4(GetUniform(id), mat4);
+}
+
 };
diff --git a/uppsrc/GLDraw/GLPainter.h b/uppsrc/GLDraw/GLPainter.h
index 39bf24791..a627baebc 100644
--- a/uppsrc/GLDraw/GLPainter.h
+++ b/uppsrc/GLDraw/GLPainter.h
@@ -58,6 +58,9 @@ struct GLCode : GLProgram {
 	GLCode& operator()(int i, Sizef sz)                                        { return Uniform(i, sz.cx, sz.cy); }
 	GLCode& operator()(const char *id, Color c, double alpha = 1);
 	GLCode& operator()(int i, Color c, double alpha = 1);
+	
+	GLCode& Mat4(int i, float *mat4);
+	GLCode& Mat4(const char *id, float *mat4);
 };
 
 class GLTexture {