Implement configurable lighting

floor-vert.glsl

@@ -3,10 +3,10 @@
 layout(location = 0) out vec3 frag_normal;
 layout(location = 1) out vec4 light_pos;
 
-layout(push_constant) uniform push_t {
+layout(push_constant) uniform vps_t {
 	mat4 vp;
 	mat4 light_vp;
-} push;
+} vps;
 
 vec2 vertices[4] = vec2[](
 	vec2(-1, -1),
@@ -16,9 +16,9 @@ vec2 vertices[4] = vec2[](
 );
 
 void main() {
-	const vec2 pos = 3 * vertices[gl_VertexIndex];
+	const vec2 pos = 4 * vertices[gl_VertexIndex];
 	const vec4 world_pos = vec4(pos.x, 0, pos.y, 1);
-	gl_Position = push.vp * world_pos;
+	gl_Position = vps.vp * world_pos;
 	frag_normal = vec3(0, 1, 0);
-	light_pos = push.light_vp * world_pos;
+	light_pos = vps.light_vp * world_pos;
 }