Fix faction swapping in the unit viewer

redhorizon-classic/source/nz/net/ultraq/redhorizon/classic/nodes/PalettedSprite.groovy

@@ -129,6 +129,29 @@ class PalettedSprite extends Sprite implements FactionColours {
 		)
 	}
 
+	@Override
+	RenderCommand renderCommand() {
+
+		transformCopy.set(globalTransform)
+
+		var updateAdjustmentMap = materialCopy.adjustmentMap != material.adjustmentMap
+		materialCopy.copy(material)
+
+		return { renderer ->
+			if (mesh && shader && materialCopy.texture) {
+				if (updateAdjustmentMap) {
+					var paletteMetadataBuffer = IntBuffer.allocate(256 * 4)
+					materialCopy.adjustmentMap.each { adjustment ->
+						paletteMetadataBuffer.put(adjustment).advance(3)
+					}
+					paletteMetadataBuffer.flip()
+					materialCopy.paletteMetadataBuffer.updateBufferData(paletteMetadataBuffer, 0)
+				}
+				renderer.draw(mesh, transformCopy, shader, materialCopy)
+			}
+		}
+	}
+
 	/**
 	 * Update the faction being applied to this sprite.
 	 */
@@ -142,7 +165,6 @@ class PalettedSprite extends Sprite implements FactionColours {
 	@Override
 	void update(float delta) {
 
-		// TODO: Make this a UBO
 		if (factionChanged) {
 			material.adjustmentMap = buildAdjustmentMap(faction)
 			factionChanged = false

redhorizon-engine/source/nz/net/ultraq/redhorizon/engine/graphics/opengl/OpenGLUniformBuffer.groovy

@@ -108,6 +108,9 @@ class OpenGLUniformBuffer extends UniformBuffer {
 				case ByteBuffer -> {
 					glBufferSubData(GL_UNIFORM_BUFFER, offset, stack.malloc(data.capacity()).put(data).flip())
 				}
+				case IntBuffer -> {
+					glBufferSubData(GL_UNIFORM_BUFFER, offset, stack.mallocInt(data.capacity()).put(data).flip())
+				}
 				case FloatBuffer -> {
 					glBufferSubData(GL_UNIFORM_BUFFER, offset, stack.mallocFloat(data.capacity()).put(data).flip())
 				}

redhorizon-engine/source/nz/net/ultraq/redhorizon/engine/scenegraph/nodes/Sprite.groovy

@@ -167,7 +167,6 @@ class Sprite extends Node<Sprite> implements GraphicsElement {
 		return scene.requestDelete(mesh, spriteSheet, material.spriteMetadataBuffer)
 	}
 
-
 	@Override
 	RenderCommand renderCommand() {