Framebuffer working; Trimap renders to FB; Refinem. use Trimap to Screen

opengl-test-two/refinement.vertexshader

@@ -0,0 +1,17 @@
+#version 330 core
+
+// Input vertex data, different for all executions of this shader.
+layout(location = 0) in vec3 vertexPosition_modelspace;
+layout(location = 1) in vec2 vertexUV;
+
+// Output data ; will be interpolated for each fragment.
+out vec2 UV;
+
+void main(){
+    // Output position of the vertex, in clip space : MVP * position
+    gl_Position = vec4(vertexPosition_modelspace, 1);
+
+    // UV of the vertex. No special space for this one.
+    UV = vertexUV;
+}
+