Fix painter text rendering

libs/gfx/source/painter.cpp

@@ -41,7 +41,7 @@ static const char text_vertex_source[] =
 R"(#version 330
 
 uniform mat4 u_transform;
-uniform ivec2 u_texture_size;
+uniform uvec2 u_texture_size;
 
 layout (location = 0) in vec4 in_position;
 layout (location = 1) in vec4 in_color;