Replace explicit matrix uniforms with single ubo

shader/texture/array.vert

@@ -1,12 +1,10 @@
 #version 430 core
 layout (location = 0) in vec3 pos;
 layout (location = 1) in vec3 texPos;
+layout (std140, binding = 0) uniform TheMat { mat4 theMat; } ;
 out vec3 vTexPos;
-
-uniform mat4 worldMat;
-
 void main()
 {
-  gl_Position = worldMat * vec4(pos,1.0) ;
+  gl_Position = theMat * vec4(pos,1.0) ;
   vTexPos = texPos;
 }