added shadow maps browsing in pbr debug mode

h3d/pass/Shadows.hx

@@ -69,7 +69,7 @@ class Shadows extends Default {
 		return lightCamera.m;
 	}
 
-	public function getShadowTex() {
+	public function getShadowTex() : h3d.mat.Texture {
 		return null;
 	}
 

h3d/scene/pbr/Renderer.hx

@@ -81,8 +81,8 @@ class Renderer extends h3d.scene.Renderer {
 	public var displayMode : DisplayMode = Pbr;
 	public var env : Environment;
 	public var exposure(get,set) : Float;
-	public var debugMode = 0;
 	public var shadows = true;
+	var debugShadowMapIndex = 0;
 
 	static var ALPHA : hxsl.Output = Swiz(Value("output.color"),[W]);
 	var output = new h3d.pass.Output("default",[
@@ -506,10 +506,36 @@ class Renderer extends h3d.scene.Renderer {
 				copy(ldr, null);
 			}
 		case Debug:
-			var shadowMap = ctx.getGlobal("mainLightShadowMap");
+			var defaultShadows : h3d.mat.Texture = ctx.getGlobal("mainLightShadowMap");
+			var prev = slides.shader.shadowMap;
+			var shadowMap = defaultShadows;
+			if( debugShadowMapIndex < 0 )
+				debugShadowMapIndex = 0;
+			if( debugShadowMapIndex > 0 ) @:privateAccess {
+				var k = debugShadowMapIndex;
+				var l = ctx.lights;
+				while( l != null && l.next != null && k > 0 ) {
+					var pl = Std.downcast(l, Light);
+					if( pl != null && pl.shadows != null ) {
+						var tex = pl.shadows.getShadowTex();
+						if( tex != null && tex != defaultShadows ) {
+							k--;
+							shadowMap = tex;
+						}
+					}
+					l = l.next;
+				}
+				if( k > 0 )
+					debugShadowMapIndex -= k;
+				#if hl
+				if( l != null && shadowMap != prev ) Sys.println(l.name);
+				#end
+			}
 			if( shadowMap == null )
 				shadowMap = h3d.mat.Texture.fromColor(0);
 			slides.shader.shadowMap = shadowMap;
+			slides.shader.shadowMapCube = shadowMap;
+			slides.shader.shadowIsCube = shadowMap.flags.has(Cube);
 			slides.shader.shadowMapChannel = R;
 			pbrProps.isScreen = true;
 			slides.render();
@@ -529,8 +555,9 @@ class Renderer extends h3d.scene.Renderer {
 	function onEvent(e:hxd.Event) {
 		if( e.kind == EPush && e.button == 2 )
 			debugPushPos = { x : e.relX, y : e.relY };
+		var win = hxd.Window.getInstance();
+
 		if( e.kind == ERelease && e.button == 2 && hxd.Math.distance(e.relX-debugPushPos.x,e.relY-debugPushPos.y) < 10 ) {
-			var win = hxd.Window.getInstance();
 			var x = Std.int((e.relX / win.width) * 4);
 			var y = Std.int((e.relY / win.height) * 4);
 			if( slides.shader.mode != Full ) {
@@ -544,6 +571,8 @@ class Renderer extends h3d.scene.Renderer {
 				slides.shader.mode = a[x];
 			}
 		}
+		if( e.kind == EWheel && (slides.shader.mode == Shadow || (slides.shader.mode == Full && e.relX > win.width/4 && e.relY > win.height/4)) )
+			debugShadowMapIndex += e.wheelDelta > 0 ? 1 : -1;
 	}
 
 	// ---- PROPS

h3d/shader/pbr/Slides.hx

@@ -25,6 +25,8 @@ class Slides extends ScreenShader {
 		var emissive : Float;
 
 		@param var shadowMap : Channel;
+		@param var shadowMapCube : SamplerCube;
+		@const var shadowIsCube : Bool;
 		@const var smode : Int;
 
 		function getColor(x:Float,y:Float) : Vec3 {
@@ -45,8 +47,16 @@ class Slides extends ScreenShader {
 					color = depth.xxx;
 				else if( x < 3 )
 					color = occlusion.xxx;
-				else
-					color = shadowMap.get(vec2(x,y) - 3).xxx;
+				else {
+					var uv = vec2(x,y) - 3;
+					if( shadowIsCube ) {
+						var phi = uv.x*3.1415*2;
+						var theta = (-uv.y+0.5)*3.1415;
+						var dir = vec3(cos(phi)*cos(theta),sin(theta),sin(phi)*cos(theta));
+						color = shadowMapCube.get(dir).xxx;
+					} else
+						color = shadowMap.get(uv).xxx;
+				}
 			}
 			return color;
 		}