Added framebuffer to render screen to

shaders/CMakeLists.txt

@@ -10,7 +10,9 @@ endmacro()
 
 add_shader(flat.vert)
 add_shader(flat.frag)
+add_shader(screen.vert)
+add_shader(screen.frag)
 
 add_custom_target(shader_headers
-  DEPENDS flat.vert.h flat.frag.h
+  DEPENDS flat.vert.h flat.frag.h screen.vert.h screen.frag.h
   COMMENT "Generated shaders headers.")

shaders/screen.frag

@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec2 UV;
+
+out vec4 FragColor;
+
+struct Material {
+  vec3 color;
+  bool usesColor;
+  sampler2D tex;
+  bool usesTex;
+};
+
+uniform Material material;
+
+void main() {
+  FragColor = texture(material.tex, UV);
+}

shaders/screen.vert

@@ -0,0 +1,11 @@
+#version 330 core
+
+layout (location = 0) in vec3 pos;
+layout (location = 1) in vec2 uv;
+
+out vec2 UV;
+
+void main() {
+  gl_Position = vec4(pos, 1.0);
+  UV = uv;
+}