framebuffer stores size, and can be resized

com/danitheskunk/skunkworks/backends/gl/Framebuffer.java

@@ -9,11 +9,40 @@ import static org.lwjgl.opengl.GL32.glFramebufferTexture;
 public class Framebuffer {
 	private final int framebuffer;
 	private final int framebufferTex;
+	private Vec2i size;
 
 	public Framebuffer(Vec2i size) {
 		framebuffer = glGenFramebuffers();
-		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
 		framebufferTex = glGenTextures();
+		setSize(size);
+	}
+
+	public void bind() {
+		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+	}
+
+	public void bindTexture() {
+		glBindTexture(GL_TEXTURE_2D, framebufferTex);
+	}
+
+	public static void unbind() {
+		glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+	}
+
+	public Vec2i getSize() {
+		return size;
+	}
+
+	public void setSize(Vec2i size) {
+		this.size = size;
+		if(framebuffer != 0) {
+			glDeleteFramebuffers(framebuffer);
+		}
+		if(framebufferTex != 0) {
+			glDeleteTextures(framebufferTex);
+		}
+		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
 		glBindTexture(GL_TEXTURE_2D, framebufferTex);
 		glTexImage2D(GL_TEXTURE_2D,
 			0,
@@ -53,17 +82,4 @@ public class Framebuffer {
 			0
 		);
 	}
-
-	public void bind() {
-		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
-	}
-
-	public void bindTexture() {
-		glBindTexture(GL_TEXTURE_2D, framebufferTex);
-	}
-
-	public static void unbind() {
-		glBindFramebuffer(GL_FRAMEBUFFER, 0);
-
-	}
 }

com/danitheskunk/skunkworks/backends/gl/Pipeline2D.java

@@ -39,13 +39,11 @@ public class Pipeline2D extends BasePipeline<RenderContext, IRenderContext> impl
 		""";
 	private final TextureAtlas atlas;
 	private boolean debug;
-	private Vec2i size;
 	private final Framebuffer framebuffer;
 
-	public Pipeline2D(Vec2i size, Framebuffer framebuffer, TextureAtlas atlas) {
+	public Pipeline2D(Framebuffer framebuffer, TextureAtlas atlas) {
 		super(new Program(vertexSource, fragmentSource));
-		this.size = size;
+		renderContext = new RenderContext(program, framebuffer.getSize());
-		renderContext = new RenderContext(program, size);
 		this.atlas = atlas;
 		this.framebuffer = framebuffer;
 		debug = false;
@@ -54,7 +52,7 @@ public class Pipeline2D extends BasePipeline<RenderContext, IRenderContext> impl
 	@Override
 	public void finishFrame() {
 		if(debug) {
-			renderContext.drawTextureRectangle(new Recti(Vec2i.ZERO, size),
+			renderContext.drawTextureRectangle(new Recti(Vec2i.ZERO, framebuffer.getSize()),
 				atlas.getAtlasTexture(),
 				false
 			);
@@ -71,6 +69,7 @@ public class Pipeline2D extends BasePipeline<RenderContext, IRenderContext> impl
 		use();
 		atlas.bind();
 		framebuffer.bind();
+		var size = framebuffer.getSize();
 		glViewport(0, 0, size.getX(), size.getY());
 		atlas.update();
 		glClear(GL_DEPTH_BUFFER_BIT);

com/danitheskunk/skunkworks/backends/gl/Pipeline3D.java

@@ -34,15 +34,13 @@ public class Pipeline3D extends BasePipeline<RenderContext3D, IRenderContext3D>
 		}
 		""";
 
-	private Vec2i size;
 	private final Framebuffer framebuffer;
 	private final TextureAtlas atlas;
 
-	public Pipeline3D(Vec2i size, Framebuffer framebuffer, TextureAtlas atlas) {
+	public Pipeline3D(Framebuffer framebuffer, TextureAtlas atlas) {
 		super(new Program(vertexSource, fragmentSource));
 		renderContext = new RenderContext3D(program);
 		renderContext.setTextureAtlas(atlas);
-		this.size = size;
 		this.framebuffer = framebuffer;
 		this.atlas = atlas;
 	}
@@ -57,6 +55,7 @@ public class Pipeline3D extends BasePipeline<RenderContext3D, IRenderContext3D>
 		use();
 		atlas.bind();
 		framebuffer.bind();
+		var size = framebuffer.getSize();
 		glViewport(0, 0, size.getX(), size.getY());
 		atlas.update();
 		glClear(GL_DEPTH_BUFFER_BIT);

com/danitheskunk/skunkworks/backends/gl/Window.java

@@ -47,13 +47,13 @@ public class Window extends BaseWindow {
 		}
 		""";
 	private final Framebuffer framebuffer;
+	private final Framebuffer framebuffer2;
 	private final Program programScaler;
 	private final Vec2i size;
 	private final boolean[] stateMouseClicked;
 	private final boolean[] stateMouseDown;
 	private final TextureAtlas textureAtlas;
 	private final long window;
-	private boolean debug;
 	private boolean shouldClose;
 	private Vec2i windowSize;
 	private final Pipeline2D pipeline2D;
@@ -66,7 +66,6 @@ public class Window extends BaseWindow {
 			"Unable to initialize GLFW");
 
 		glfwDefaultWindowHints();
-		debug = false;
 		this.size = size;
 		windowSize = size;
 
@@ -94,11 +93,12 @@ public class Window extends BaseWindow {
 		glfwSetMouseButtonCallback(window, this::mouseButtonCallback);
 
 		framebuffer = new Framebuffer(size);
+		framebuffer2 = new Framebuffer(size);
 		textureAtlas = new TextureAtlas();
 		programScaler = new Program(vertexSourceScaler, fragmentSourceScaler);
 
-		pipeline2D = new Pipeline2D(size, framebuffer, textureAtlas);
+		pipeline2D = new Pipeline2D(framebuffer, textureAtlas);
-		pipeline3D = new Pipeline3D(size, framebuffer, textureAtlas);
+		pipeline3D = new Pipeline3D(framebuffer, textureAtlas);
 
 
 		glProgramUniform2f(programScaler.getProgram(),
@@ -238,7 +238,8 @@ public class Window extends BaseWindow {
 		//glEnd();
 
 
-		Framebuffer.unbind();
+		//Framebuffer.unbind();
+		framebuffer2.bind();
 		glViewport(0, 0, windowSize.getX(), windowSize.getY());
 
 		programScaler.use();
@@ -313,11 +314,39 @@ public class Window extends BaseWindow {
 		glVertex2i(tlx2, tly2);
 
 		glEnd();
+
+		Framebuffer.unbind();
+		framebuffer2.bindTexture();
+		glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+		tlx1 = 0;
+		tly1 = 0;
+		tlx2 = windowSize.getX();
+		tly2 = windowSize.getY();
+		glBegin(GL_TRIANGLES);
+		//counterclockwise triangles
+		glVertexAttrib2f(texCoordIndex, 0, 1);
+		glVertex2i(tlx1, tly2);
+		glVertexAttrib2f(texCoordIndex, 1, 0);
+		glVertex2i(tlx2, tly1);
+		glVertexAttrib2f(texCoordIndex, 0, 0);
+		glVertex2i(tlx1, tly1);
+
+		glVertexAttrib2f(texCoordIndex, 1, 0);
+		glVertex2i(tlx2, tly1);
+		glVertexAttrib2f(texCoordIndex, 0, 1);
+		glVertex2i(tlx1, tly2);
+		glVertexAttrib2f(texCoordIndex, 1, 1);
+		glVertex2i(tlx2, tly2);
+		glEnd();
+
+
 	}
 
 	@Override
 	public void setDebug(boolean on) {
-		debug = on;
+		pipeline2D.setDebug(on);
 	}
 
 	@Override