Merge pull request #7853 from Mailaender/alpha-experiments

Added AlphaImage support

OpenRA.Game/Graphics/IGraphicsDevice.cs

@@ -44,7 +44,9 @@ namespace OpenRA
 		SoftAdditive,
 		Translucency25,
 		Translucency50,
-		Translucency75
+		Translucency75,
+		Multiplicative,
+		DoubleMultiplicative
 	}
 
 	public interface IGraphicsDevice : IDisposable

OpenRA.Renderer.Sdl2/Sdl2GraphicsDevice.cs

@@ -267,6 +267,16 @@ namespace OpenRA.Renderer.Sdl2
 					ErrorHandler.CheckGlError();
 					GL.BlendColor(1f, 1f, 1f, 0.75f);
 					break;
+				case BlendMode.Multiplicative:
+					GL.Enable(EnableCap.Blend);
+					ErrorHandler.CheckGlError();
+					GL.BlendFunc(BlendingFactorSrc.Zero, BlendingFactorDest.SrcColor);
+					break;
+				case BlendMode.DoubleMultiplicative:
+					GL.Enable(EnableCap.Blend);
+					ErrorHandler.CheckGlError();
+					GL.BlendFunc(BlendingFactorSrc.DstColor, BlendingFactorDest.SrcColor);
+					break;
 			}
 
 			ErrorHandler.CheckGlError();

mods/ts/rules/civilian-structures.yaml

@@ -1270,10 +1270,14 @@ GALITE:
 		Range: 2c0
 	Power:
 		Amount: 0
-#	WithIdleOverlay@LIGHTING:
-#		Sequence: lighting
+	WithIdleOverlay@LIGHTING:
+		Sequence: lighting
+		Palette: alpha
 	Selectable:
 		Bounds: 25, 35, 0, -12
+	Buildable:
+		Queue: Defense
+		Prerequisites: ~disabled
 
 GAICBM:
 	Inherits: ^Building

mods/ts/rules/world.yaml

@@ -45,6 +45,9 @@ World:
 		Filename: unittem.pal
 		AllowModifiers: false
 		ShadowIndex: 1
+	PaletteFromFile@alpha:
+		Name: alpha
+		Filename: alpha.pal
 	PaletteFromRGBA@shadow:
 		Name: shadow
 		R: 0

mods/ts/sequences/civilian.yaml

@@ -690,9 +690,12 @@ galite:
 	damaged-idle: gtlite
 		Start: 1
 		ShadowStart: 3
-#	lighting: alphatst
-#		ZOffset: -1c511
-#		BlendMode: Alpha
+	lighting: alphatst
+		BlendMode: DoubleMultiplicative
+		UseTilesetCode: false
+	icon: liteicon
+		Offset: 0, 0
+		UseTilesetCode: false
 
 namntk:
 	idle: ntmntk