tests: Add image tests for BitmapData.colorTransform

tests/tests/swfs/avm1/bitmap_data_colortransform/Test.as

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+import flash.display.BitmapData;
+import flash.geom.ColorTransform;
+
+addTestBitmap(0, 1, 1, 1, 1, 0, 0, 0, 0);
+addTestBitmap(1, 2, 1, 1, 1, 0, 0, 0, 0);
+addTestBitmap(2, 1, 2, 1, 1, 0, 0, 0, 0);
+addTestBitmap(3, 1, 1, 2, 1, 0, 0, 0, 0);
+
+// Flash bug: Transform with only alpha multiplier > 1 has no effect!
+addTestBitmap(4, 1, 1, 1, 2, 0, 0, 0, 0); 
+
+// But if any other property is non-default, it does have an effect.
+addTestBitmap(5, 2, 1, 1, 2, 0, 0, 0, 0); 
+
+addTestBitmap(6, 0.5, 1, 1, 1, 0, 0, 0, 0);
+addTestBitmap(7, 1, 0.5, 1, 1, 0, 0, 0, 0);
+addTestBitmap(8, 1, 1, 0.5, 1, 0, 0, 0, 0);
+addTestBitmap(9, 1, 1, 1, 0.5, 0, 0, 0, 0);
+addTestBitmap(10, 1, 1, 1, 1, 50, 0, 0, 0);
+addTestBitmap(11, 1, 1, 1, 1, 0, 50, 0, 0);
+addTestBitmap(12, 1, 1, 1, 1, 0, 0, 50, 0);
+
+// Additive alpha should not affect pixels with 0 alpha.
+addTestBitmap(13, 1, 1, 1, 1, 0, 0, 0, 50);
+
+addTestBitmap(14, 1, 1, 1, 1, -50, 0, 0, 0);
+addTestBitmap(15, 1, 1, 1, 1, 0, -50, 0, 0);
+addTestBitmap(16, 1, 1, 1, 1, 0, 0, -50, 0);
+addTestBitmap(17, 1, 1, 1, 1, 0, 0, 0, -50);
+
+// Colors should saturate
+addTestBitmap(18, 1, 1, 1, 1, 32764, -32764, 0, 0);
+
+// But intermediate calculations should have 16-bit precision, saturation only on final color
+addTestBitmap(19, 127.99609375, 1, 1, 1, -16255, 0, 0, 0);
+
+addTestBitmap(20, 0.5, 1.3, 0.2, 0.9, 5, 33, -44, -12);
+
+function addTestBitmap(y:Number, rMult:Number, gMult:Number, bMult:Number, aMult:Number, rAdd:Number, gAdd:Number, bAdd:Number, aAdd:Number)
+{
+    var bData:BitmapData = BitmapData.loadBitmap("TestBitmapData");
+    var ct:ColorTransform = new ColorTransform(rMult, gMult, bMult, aMult, rAdd, gAdd, bAdd, aAdd);
+    bData.colorTransform(bData.rectangle, ct);
+    var bitmap = createEmptyMovieClip("bitmap" + y, y);
+    bitmap.attachBitmap(bData, 0);
+    bitmap._y = y * 8;
+}

tests/tests/swfs/avm1/bitmap_data_colortransform/test.toml

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+num_frames = 1
+
+[image_comparison]
+tolerance = 5
+
+[player_options]
+with_renderer = { optional = true, sample_count = 1 }

tests/tests/swfs/avm2/bitmapdata_colortransform/Test.as

@@ -0,0 +1,69 @@
+package
+{
+    import flash.display.Bitmap;
+    import flash.display.BitmapData;
+    import flash.display.Sprite;
+    import flash.geom.ColorTransform;
+
+    import flash.display.PNGEncoderOptions;
+    import flash.net.FileReference;
+    import flash.utils.ByteArray;
+
+    public class Test extends Sprite {
+        function Test() {
+            addTestBitmap(0, 1, 1, 1, 1, 0, 0, 0, 0);
+            addTestBitmap(1, 2, 1, 1, 1, 0, 0, 0, 0);
+            addTestBitmap(2, 1, 2, 1, 1, 0, 0, 0, 0);
+            addTestBitmap(3, 1, 1, 2, 1, 0, 0, 0, 0);
+
+            // Flash bug: Transform with only alpha multiplier > 1 has no effect!
+            addTestBitmap(4, 1, 1, 1, 2, 0, 0, 0, 0); 
+
+            // But if any other property is non-default, it does have an effect.
+            addTestBitmap(5, 2, 1, 1, 2, 0, 0, 0, 0); 
+
+            addTestBitmap(6, 0.5, 1, 1, 1, 0, 0, 0, 0);
+            addTestBitmap(7, 1, 0.5, 1, 1, 0, 0, 0, 0);
+            addTestBitmap(8, 1, 1, 0.5, 1, 0, 0, 0, 0);
+            addTestBitmap(9, 1, 1, 1, 0.5, 0, 0, 0, 0);
+            addTestBitmap(10, 1, 1, 1, 1, 50, 0, 0, 0);
+            addTestBitmap(11, 1, 1, 1, 1, 0, 50, 0, 0);
+            addTestBitmap(12, 1, 1, 1, 1, 0, 0, 50, 0);
+
+            // Additive alpha should not affect pixels with 0 alpha.
+            addTestBitmap(13, 1, 1, 1, 1, 0, 0, 0, 50);
+
+            addTestBitmap(14, 1, 1, 1, 1, -50, 0, 0, 0);
+            addTestBitmap(15, 1, 1, 1, 1, 0, -50, 0, 0);
+            addTestBitmap(16, 1, 1, 1, 1, 0, 0, -50, 0);
+            addTestBitmap(17, 1, 1, 1, 1, 0, 0, 0, -50);
+
+            // Colors should saturate
+            addTestBitmap(18, 1, 1, 1, 1, 32764, -32764, 0, 0);
+
+            // But intermediate calculations should have 16-bit precision, saturation only on final color
+            addTestBitmap(19, 127.99609375, 1, 1, 1, -16255, 0, 0, 0);
+
+            addTestBitmap(20, 0.5, 1.3, 0.2, 0.9, 5, 33, -44, -12);
+
+            /*
+            var bData = new BitmapData(stage.stageWidth, stage.stageHeight, true, 0xff000000);
+            bData.draw(stage);
+            var bytes = new ByteArray();
+            bData.encode(bData.rect, new PNGEncoderOptions(), bytes);
+            var file = new FileReference();
+            file.save(bytes, "expected2.png");
+            */
+        }
+
+        function addTestBitmap(y:uint, rMult:Number, gMult:Number, bMult:Number, aMult:Number, rAdd:Number, gAdd:Number, bAdd:Number, aAdd:Number):void {
+            var bData:BitmapData = new TestBitmapData(256, 8);
+            var ct:ColorTransform = new ColorTransform(rMult, gMult, bMult, aMult, rAdd, gAdd, bAdd, aAdd);
+            bData.colorTransform(bData.rect, ct);
+            var bitmap:Bitmap = new Bitmap(bData);
+            addChild(bitmap);
+            bitmap.y = y * 8;
+        }
+    }
+}
+

tests/tests/swfs/avm2/bitmapdata_colortransform/test.toml

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+num_frames = 1
+
+[image_comparison]
+tolerance = 5
+
+[player_options]
+with_renderer = { optional = true, sample_count = 1 }