Rendering Hints for EA

Color coding :

	To be supported for EA – Hints verified in current repo
	To be supported for EA - Hints verified in current repo with failure

Hint	Key	Value	Supported for EA?	Status
Rendering Hint	KEY_RENDERING	VALUE_RENDER_DEFAULT	Yes	Done
		VALUE_RENDER_SPEED	No	test/jdk/java/awt/MultipleGradientPaint/MultiGradientTest.java passes for OGL and Metal
		VALUE_RENDER_QUALITY	No

Antialiasing	KEY_ANTIALIASING	VALUE_ANTIALIAS_DEFAULT	Yes	Done
		VALUE_ANTIALIAS_OFF	Yes	Done
		VALUE_ANTIALIAS_ON	Yes	Done. Test passed - jdk/sun/java2d/pipe/Test7027667.java java/awt/geom/Line2D/AALineTest.java Also verified using J2DDemo Some tests fail due to pixel accuracy tolerance. Also, some some combination with AA does not work. Being worked upon separately.

Text Antialiasing	KEY_TEXT_ANTIALIASING	VALUE_TEXT_ANTIALIAS_DEFAULT	Yes	Done. Works in Font2D
		VALUE_TEXT_ANTIALIAS_OFF	Yes	Done. Works in Font2D
		VALUE_TEXT_ANTIALIAS_ON	Yes	Done. Works in Font2D
		VALUE_TEXT_ANTIALIAS_GASP	No	Works in Font2D
		VALUE_TEXT_ANTIALIAS_LCD_HRGB	No	Works in Font2D
		VALUE_TEXT_ANTIALIAS_LCD_HBGR	No	Works in Font2D
		VALUE_TEXT_ANTIALIAS_LCD_VRGB	No	Works in Font2D
		VALUE_TEXT_ANTIALIAS_LCD_VBGR	No	Works in Font2D

Font Fractional metrics	KEY_FRACTIONALMETRICS	VALUE_FRACTIONALMETRICS_DEFAULT	Yes	Done. Works in Font2D
		VALUE_FRACTIONALMETRICS_OFF	Yes	Done. Works in Font2D
		VALUE_FRACTIONALMETRICS_ON	No	Works in Font2D

Dithering	KEY_DITHERING	VALUE_DITHER_DEFAULT	Yes	Dither option not present in Font2D, J2DDemo
		VALUE_DITHER_DISABLE	Yes	Dither option not present in Font2D, J2DDemo
		VALUE_DITHER_ENABLE	Yes	Dither option not present in Font2D, J2DDemo Test sun/java2d/marlin/OpenJDKFillBug uses this hint and test passes with metal pipeline

Interpolation	KEY_INTERPOLATION	VALUE_INTERPOLATION_NEAREST_NEIGHBOR	Yes	test/jdk/sun/java2d/pipe/InterpolationQualityTest.java This test passes for - Nearest Neighbor interpolation for both OGL and Metal. This test fails for - bilinear and bicubic interpolation - for both OGL and Metal. It is a test issue and will be addressed in JDK-8242562
		VALUE_INTERPOLATION_BILINEAR	Yes	test/jdk/sun/java2d/SunGraphics2D/DrawImageBilinear.java OGL = passed, metal = passed
		VALUE_INTERPOLATION_BICUBIC	No	This was decided to be a non-blocker for EA - and will be worked upon separately - JDK-8242351 test/jdk/sun/java2d/pipe/InterpolationQualityTest.java OGL = failed, metal = failed

Alpha interpolation	KEY_ALPHA_INTERPOLATION	VALUE_ALPHA_INTERPOLATION_DEFAULT	Yes	Works - tested by setting this value on a sample program.
		VALUE_ALPHA_INTERPOLATION_SPEED	No
		VALUE_ALPHA_INTERPOLATION_QUALITY	No

Color Rendering	KEY_COLOR_RENDERING	VALUE_COLOR_RENDER_DEFAULT	Yes	Works - tested by setting this value on a sample program.
		VALUE_COLOR_RENDER_SPEED	No
		VALUE_COLOR_RENDER_QUALITY	No

Stroke Normalization control	KEY_STROKE_CONTROL	VALUE_STROKE_DEFAULT	Yes	Works - tested by setting this value on a sample program.
		VALUE_STROKE_NORMALIZE	No
		VALUE_STROKE_PURE	No

Image Scaling Hint	KEY_RESOLUTION_VARIANT	VALUE_RESOLUTION_VARIANT_DEFAULT	Yes	Works -Jtreg test passes test/jdk/java/awt/image/multiresolution/MultiResolutionRenderingHintsTest.java test/jdk/java/awt/image/MultiResolutionImageTest.java
		VALUE_RESOLUTION_VARIANT_BASE	No
		VALUE_RESOLUTION_VARIANT_SIZE_FIT	No
		VALUE_RESOLUTION_VARIANT_DPI_FIT	No

	KEY_TEXT_ANTIALIAS_LCD_CONTRAST (used private in sun.awt.SunHints) Actual hints to be used is KEY_TEXT_LCD_CONTRAST which is used in Font2D	INTKEY_AATEXT_LCD_CONTRAST	No	LCD Contrast value present in Font2D but since surface seems to be not opaque, even if antialiasing hints LCD_HBGR, LCD_HRGB, are used, the glyphs are rendered via Grayscale so LCD contrast is noop Standalone test written to use this hint is passing the contrast value in the hint to LCD text rendering test/jdk/javax/swing/UIDefaults/6302464/bug6302464.java passes with Metal