Small Progress on the Renderer

src/gui/java/speiger/src/coreengine/ui/gui/renderer/IUIRenderer.java

@@ -26,7 +26,7 @@ public interface IUIRenderer {
 	void alignH(Align align);
 	
 	void pushLayer(LayerType type);
-	void popLayer();
+	void popLayer(LayerType type);
 	
 	
 	void drawLine(float startX, float startY, float endX, float endY, float lineWidth, int color);

src/gui/java/speiger/src/coreengine/ui/gui/renderer/LayerType.java

@@ -1,7 +1,6 @@
 package speiger.src.coreengine.ui.gui.renderer;
 
 public enum LayerType {
-	COMPONENT,
 	COMPONENT_STACK,
 	WINDOW;
 }

src/gui/java/speiger/src/coreengine/ui/gui/renderer/UIRenderer.java

@@ -2,12 +2,19 @@ package speiger.src.coreengine.ui.gui.renderer;
 
 import java.util.List;
 
+import speiger.src.collections.ints.collections.IntStack;
+import speiger.src.collections.ints.lists.IntArrayList;
 import speiger.src.collections.objects.lists.ObjectArrayList;
+import speiger.src.collections.utils.Stack;
+import speiger.src.coreengine.math.MathUtils;
+import speiger.src.coreengine.math.bits.BitUtil;
 import speiger.src.coreengine.math.vector.matrix.Matrix4fStack;
 import speiger.src.coreengine.math.vector.quaternion.Quaternion;
 import speiger.src.coreengine.platform.graphics.api.core.GraphicsDevice;
 import speiger.src.coreengine.platform.graphics.api.shader.ShaderPipeline;
 import speiger.src.coreengine.platform.graphics.api.utils.SampledTexture;
+import speiger.src.coreengine.platform.graphics.api.utils.ScissorsManager;
+import speiger.src.coreengine.platform.graphics.api.utils.ScissorsManager.IScissorsHandler;
 import speiger.src.coreengine.platform.graphics.api.vertex.builder.IVertexBuffer.BufferResult;
 import speiger.src.coreengine.platform.graphics.api.vertex.builder.IVertexBuilder;
 import speiger.src.coreengine.platform.graphics.api.vertex.builder.VertexBuilder;
@@ -21,8 +28,12 @@ public class UIRenderer implements IUIRenderer {
 	VertexBuilder builder = new VertexBuilder(100);
 	List<UIDraw> draws = new ObjectArrayList<>();
 	Align[] alignment = new Align[] { Align.CENTER, Align.CENTER };
+	Stack<WindowLayer> layers = new ObjectArrayList<>();
+	int windowLayer = 1;
+	int currentComponent = 0;
 	ShaderPipeline currentPipeline;
 	SampledTexture currentTexture;
+	ScissorsManager clippingManager = new ScissorsManager(64, ScissorsManager.NoOp.INSTANCE);
 	
 	public UIRenderer(GraphicsDevice device) {
 		this.device = device;
@@ -30,17 +41,17 @@ public class UIRenderer implements IUIRenderer {
 	
 	@Override
 	public boolean isClipping(IGuiBox box) {
-		return false;
+		return clippingManager.contains(Math.round(box.getMinX()), Math.round(box.getMinY()), Math.round(box.getWidth()), Math.round(box.getHeight()));
 	}
 	
 	@Override
 	public void pushClip(IGuiBox box) {
-		
+		clippingManager.push(Math.round(box.getMinX()), Math.round(box.getMinY()), Math.round(box.getWidth()), Math.round(box.getHeight()));
 	}
 	
 	@Override
 	public void popClip() {
-		
+		clippingManager.pop();
 	}
 	
 	@Override
@@ -96,14 +107,44 @@ public class UIRenderer implements IUIRenderer {
 	
 	@Override
 	public void pushLayer(LayerType type) {
-		
+		switch(type) {
+			case WINDOW:
+				layers.push(new WindowLayer(windowLayer++));
+				break;
+			case COMPONENT_STACK:
+				if(layers.isEmpty()) return;
+				layers.top().push();
+				break;
+		}
 	}
 	
 	@Override
-	public void popLayer() {
-		
+	public void popLayer(LayerType type) {
+		switch(type) {
+			case WINDOW:
+				layers.pop();
+				break;
+			case COMPONENT_STACK:
+				if(layers.isEmpty()) return;
+				layers.top().pop();
+				break;
+		}
 	}
 	
+	/**
+	 * Idea:
+	 * public class DrawObject {
+	 * 	  int windowLayer;
+	 * 	  int componentLayer;
+	 * 	  ShaderPipeline pipeline;
+	 * 	  Int2ObjectMap<SampledTexture> textures;
+	 * 	  vec4 scissors;
+	 * 	  byte[] vertexData;
+	 * }
+	 * 
+	 * We pregenerate the draw call
+	 */
+	
 	@Override
 	public void drawLine(float startX, float startY, float endX, float endY, float lineWidth, int color) {
 		ensureType(UIConstants.GUI, null);
@@ -212,4 +253,25 @@ public class UIRenderer implements IUIRenderer {
 	}
 	
 	protected record UIDraw(ShaderPipeline pipeline, SampledTexture texture, BufferResult result) {}
+	
+	private class WindowLayer {
+		final int layer;
+		IntStack stack = new IntArrayList();
+		int currentLayer = 1;
+		public WindowLayer(int layer) {
+			this.layer = layer;
+		}
+		
+		private void push() {
+			stack.push(currentLayer++);
+		}
+		
+		private void pop() {
+			stack.pop();
+		}
+		
+		public int currentLayer() {
+			return BitUtil.toInt(layer, stack.isEmpty() ? 0 : stack.top());
+		}
+	}
 }