--- /dev/null 2019-03-05 14:31:12.000000000 +0300 +++ new/src/java.desktop/macosx/classes/sun/java2d/metal/MTLPaints.java 2019-03-05 14:31:12.000000000 +0300 @@ -0,0 +1,208 @@ +/* + * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package sun.java2d.metal; + +import sun.java2d.SunGraphics2D; +import sun.java2d.SurfaceData; +import sun.java2d.loops.CompositeType; + +import java.awt.*; +import java.awt.MultipleGradientPaint.ColorSpaceType; +import java.awt.MultipleGradientPaint.CycleMethod; +import java.awt.image.BufferedImage; +import java.util.HashMap; +import java.util.Map; + +import static sun.java2d.metal.MTLContext.MTLContextCaps.CAPS_EXT_GRAD_SHADER; +import static sun.java2d.pipe.BufferedPaints.MULTI_MAX_FRACTIONS; + +abstract class MTLPaints { + + /** + * Holds all registered implementations, using the corresponding + * SunGraphics2D.PAINT_* constant as the hash key. + */ + private static Map impls = + new HashMap(4, 1.0f); + + static { + impls.put(SunGraphics2D.PAINT_GRADIENT, new Gradient()); + impls.put(SunGraphics2D.PAINT_LIN_GRADIENT, new LinearGradient()); + impls.put(SunGraphics2D.PAINT_RAD_GRADIENT, new RadialGradient()); + impls.put(SunGraphics2D.PAINT_TEXTURE, new Texture()); + } + + /** + * Attempts to locate an implementation corresponding to the paint state + * of the provided SunGraphics2D object. If no implementation can be + * found, or if the paint cannot be accelerated under the conditions + * of the SunGraphics2D, this method returns false; otherwise, returns + * true. + */ + static boolean isValid(SunGraphics2D sg2d) { + MTLPaints impl = impls.get(sg2d.paintState); + return (impl != null && impl.isPaintValid(sg2d)); + } + + /** + * Returns true if this implementation is able to accelerate the + * Paint object associated with, and under the conditions of, the + * provided SunGraphics2D instance; otherwise returns false. + */ + abstract boolean isPaintValid(SunGraphics2D sg2d); + +/************************* GradientPaint support ****************************/ + + private static class Gradient extends MTLPaints { + private Gradient() {} + + /** + * There are no restrictions for accelerating GradientPaint, so + * this method always returns true. + */ + @Override + boolean isPaintValid(SunGraphics2D sg2d) { + return true; + } + } + +/************************** TexturePaint support ****************************/ + + private static class Texture extends MTLPaints { + private Texture() {} + + /** + * Returns true if the given TexturePaint instance can be used by the + * accelerated MTLPaints.Texture implementation. A TexturePaint is + * considered valid if the following conditions are met: + * - the texture image dimensions are power-of-two (or the + * GL_ARB_texture_non_power_of_two extension is present) + * - the texture image can be (or is already) cached in an OpenGL + * texture object + */ + @Override + boolean isPaintValid(SunGraphics2D sg2d) { + TexturePaint paint = (TexturePaint)sg2d.paint; + MTLSurfaceDataBase dstData = (MTLSurfaceDataBase)sg2d.surfaceData; + BufferedImage bi = paint.getImage(); + + // see if texture-non-pow2 extension is available + if (!dstData.isTexNonPow2Available()) { + int imgw = bi.getWidth(); + int imgh = bi.getHeight(); + + // verify that the texture image dimensions are pow2 + if ((imgw & (imgw - 1)) != 0 || (imgh & (imgh - 1)) != 0) { + return false; + } + } + + SurfaceData srcData = + dstData.getSourceSurfaceData(bi, + SunGraphics2D.TRANSFORM_ISIDENT, + CompositeType.SrcOver, null); + if (!(srcData instanceof MTLSurfaceDataBase)) { + // REMIND: this is a hack that attempts to cache the system + // memory image from the TexturePaint instance into an + // OpenGL texture... + srcData = + dstData.getSourceSurfaceData(bi, + SunGraphics2D.TRANSFORM_ISIDENT, + CompositeType.SrcOver, null); + if (!(srcData instanceof MTLSurfaceDataBase)) { + return false; + } + } + + // verify that the source surface is actually a texture + MTLSurfaceDataBase oglData = (MTLSurfaceDataBase)srcData; + if (oglData.getType() != MTLSurfaceDataBase.TEXTURE) { + return false; + } + + return true; + } + } + +/****************** Shared MultipleGradientPaint support ********************/ + + private abstract static class MultiGradient extends MTLPaints { + protected MultiGradient() {} + + /** + * Returns true if the given MultipleGradientPaint instance can be + * used by the accelerated MTLPaints.MultiGradient implementation. + * A MultipleGradientPaint is considered valid if the following + * conditions are met: + * - the number of gradient "stops" is <= MAX_FRACTIONS + * - the destination has support for fragment shaders + */ + @Override + boolean isPaintValid(SunGraphics2D sg2d) { + MultipleGradientPaint paint = (MultipleGradientPaint)sg2d.paint; + // REMIND: ugh, this creates garbage; would be nicer if + // we had a MultipleGradientPaint.getNumStops() method... + if (paint.getFractions().length > MULTI_MAX_FRACTIONS) { + return false; + } + + MTLSurfaceDataBase dstData = (MTLSurfaceDataBase)sg2d.surfaceData; + MTLGraphicsConfigBase gc = dstData.getMTLGraphicsConfig(); + if (!gc.isCapPresent(CAPS_EXT_GRAD_SHADER)) { + return false; + } + + return true; + } + } + +/********************** LinearGradientPaint support *************************/ + + private static class LinearGradient extends MultiGradient { + private LinearGradient() {} + + @Override + boolean isPaintValid(SunGraphics2D sg2d) { + LinearGradientPaint paint = (LinearGradientPaint)sg2d.paint; + + if (paint.getFractions().length == 2 && + paint.getCycleMethod() != CycleMethod.REPEAT && + paint.getColorSpace() != ColorSpaceType.LINEAR_RGB) + { + // we can delegate to the optimized two-color gradient + // codepath, which does not require fragment shader support + return true; + } + + return super.isPaintValid(sg2d); + } + } + +/********************** RadialGradientPaint support *************************/ + + private static class RadialGradient extends MultiGradient { + private RadialGradient() {} + } +}