Work on post

src/main/java/me/cortex/voxelmon/core/gl/GlFramebuffer.java

@@ -1,10 +1,9 @@
 package me.cortex.voxelmon.core.gl;
 
 import me.cortex.voxelmon.core.util.TrackedObject;
+import org.lwjgl.opengl.GL30C;
 
-import static org.lwjgl.opengl.ARBFramebufferObject.*;
+import static org.lwjgl.opengl.GL45C.*;
-import static org.lwjgl.opengl.GL45C.glCreateFramebuffers;
-import static org.lwjgl.opengl.GL45C.glNamedFramebufferTexture;
 
 public class GlFramebuffer extends TrackedObject {
     public final int id;
@@ -22,4 +21,8 @@ public class GlFramebuffer extends TrackedObject {
         super.free0();
         glDeleteFramebuffers(this.id);
     }
+
+    public void verify() {
+        glCheckNamedFramebufferStatus(this.id, GL_FRAMEBUFFER);
+    }
 }

src/main/java/me/cortex/voxelmon/core/gl/GlTexture.java

@@ -12,6 +12,10 @@ import static org.lwjgl.opengl.GL45C.glTextureStorage2D;
 public class GlTexture extends TrackedObject {
     final int id;
     private final int type;
+    public GlTexture() {
+        this(GL_TEXTURE_2D)
+    }
+
     public GlTexture(int type) {
         this.id = glCreateTextures(type);
         this.type = type;

src/main/java/me/cortex/voxelmon/core/rendering/PostProcessing.java

@@ -3,14 +3,46 @@ package me.cortex.voxelmon.core.rendering;
 import me.cortex.voxelmon.core.gl.GlFramebuffer;
 import me.cortex.voxelmon.core.gl.GlTexture;
 
+import static org.lwjgl.opengl.ARBFramebufferObject.*;
+import static org.lwjgl.opengl.GL11.GL_RGBA8;
+
 public class PostProcessing {
     private final GlFramebuffer framebuffer;
+    private int width;
+    private int height;
     private GlTexture colour;
-    private GlTexture depth;
+    private GlTexture depthStencil;
 
     public PostProcessing() {
         this.framebuffer = new GlFramebuffer();
     }
 
+    public void setSize(int width, int height) {
+        if (this.width != width || this.height != height) {
+            this.width = width;
+            this.height = height;
+            if (this.colour != null) {
+                this.colour.free();
+                this.depthStencil.free();
+            }
+
+            this.colour = new GlTexture().store(GL_RGBA8, 1, width, height);
+            this.depthStencil = new GlTexture().store(GL_DEPTH24_STENCIL8, 1, width, height);
+
+            this.framebuffer.bind(GL_COLOR_ATTACHMENT0, this.colour);
+            this.framebuffer.bind(GL_DEPTH_STENCIL_ATTACHMENT, this.depthStencil);
+            this.framebuffer.verify();
+        }
+    }
+
+    //Bind and clears the post processing frame buffer
+    public void bindClearFramebuffer() {
+
+    }
+
+    //Executes the post processing and emits to whatever framebuffer is currently bound via a blit
+    public void renderPost() {
+
+    }
 
 }