--- /dev/null 2019-06-19 14:02:24.000000000 +0530 +++ new/src/java.desktop/macosx/classes/sun/java2d/metal/MTLContext.java 2019-06-19 14:02:23.000000000 +0530 @@ -0,0 +1,222 @@ +/* + * 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.pipe.BufferedContext; +import sun.java2d.pipe.RenderBuffer; +import sun.java2d.pipe.RenderQueue; +import sun.java2d.pipe.hw.ContextCapabilities; + +import java.lang.annotation.Native; + +import static sun.java2d.pipe.BufferedOpCodes.*; + +/** + * Note that the RenderQueue lock must be acquired before calling any of + * the methods in this class. + */ +public class MTLContext extends BufferedContext { + + private final MTLGraphicsConfig config; + + public MTLContext(RenderQueue rq, MTLGraphicsConfig config) { + super(rq); + this.config = config; + } + + /** + * Convenience method that delegates to setScratchSurface() below. + */ + static void setScratchSurface(MTLGraphicsConfig gc) { + setScratchSurface(gc.getNativeConfigInfo()); + } + + /** + * Makes the given GraphicsConfig's context current to its associated + * "scratch surface". Each GraphicsConfig maintains a native context + * (MTLDevice) as well as a native pbuffer + * known as the "scratch surface". By making the context current to the + * scratch surface, we are assured that we have a current context for + * the relevant GraphicsConfig, and can therefore perform operations + * depending on the capabilities of that GraphicsConfig. + * This method should be used for operations with an MTL texture + * as the destination surface (e.g. a sw->texture blit loop), or in those + * situations where we may not otherwise have a current context (e.g. + * when disposing a texture-based surface). + */ + public static void setScratchSurface(long pConfigInfo) { + // assert MTLRenderQueue.getInstance().lock.isHeldByCurrentThread(); + + // invalidate the current context + currentContext = null; + + // set the scratch context + MTLRenderQueue rq = MTLRenderQueue.getInstance(); + RenderBuffer buf = rq.getBuffer(); + rq.ensureCapacityAndAlignment(12, 4); + buf.putInt(SET_SCRATCH_SURFACE); + buf.putLong(pConfigInfo); + } + + /** + * Invalidates the currentContext field to ensure that we properly + * revalidate the MTLContext (make it current, etc.) next time through + * the validate() method. This is typically invoked from methods + * that affect the current context state (e.g. disposing a context or + * surface). + */ + public static void invalidateCurrentContext() { + // assert MTLRenderQueue.getInstance().lock.isHeldByCurrentThread(); + + // invalidate the current Java-level context so that we + // revalidate everything the next time around + if (currentContext != null) { + currentContext.invalidateContext(); + currentContext = null; + } + + // invalidate the context reference at the native level, and + // then flush the queue so that we have no pending operations + // dependent on the current context + MTLRenderQueue rq = MTLRenderQueue.getInstance(); + rq.ensureCapacity(4); + rq.getBuffer().putInt(INVALIDATE_CONTEXT); + rq.flushNow(); + } + + public RenderQueue getRenderQueue() { + return MTLRenderQueue.getInstance(); + } + + /** + * Returns a string representing adapter id (vendor, renderer, version). + * Must be called on the rendering thread. + * + * @return an id string for the adapter + */ + public static final native String getMTLIdString(); + + @Override + public void saveState() { + // assert rq.lock.isHeldByCurrentThread(); + + // reset all attributes of this and current contexts + invalidateContext(); + invalidateCurrentContext(); + + setScratchSurface(config); + + // save the state on the native level + rq.ensureCapacity(4); + buf.putInt(SAVE_STATE); + rq.flushNow(); + } + + @Override + public void restoreState() { + // assert rq.lock.isHeldByCurrentThread(); + + // reset all attributes of this and current contexts + invalidateContext(); + invalidateCurrentContext(); + + setScratchSurface(config); + + // restore the state on the native level + rq.ensureCapacity(4); + buf.putInt(RESTORE_STATE); + rq.flushNow(); + } + + public static class MTLContextCaps extends ContextCapabilities { + /** + * This cap will only be set if the fbobject system property has been + * enabled and we are able to create an FBO with depth buffer. + */ + @Native + public static final int CAPS_EXT_FBOBJECT = + (CAPS_RT_TEXTURE_ALPHA | CAPS_RT_TEXTURE_OPAQUE); + /** Indicates that the context is doublebuffered. */ + @Native + public static final int CAPS_DOUBLEBUFFERED = (FIRST_PRIVATE_CAP << 0); + /** + * This cap will only be set if the lcdshader system property has been + * enabled and the hardware supports the minimum number of texture units + */ + @Native + static final int CAPS_EXT_LCD_SHADER = (FIRST_PRIVATE_CAP << 1); + /** + * This cap will only be set if the biopshader system property has been + * enabled and the hardware meets our minimum requirements. + */ + @Native + static final int CAPS_EXT_BIOP_SHADER = (FIRST_PRIVATE_CAP << 2); + /** + * This cap will only be set if the gradshader system property has been + * enabled and the hardware meets our minimum requirements. + */ + @Native + static final int CAPS_EXT_GRAD_SHADER = (FIRST_PRIVATE_CAP << 3); + /** Indicates the presence of the GL_ARB_texture_rectangle extension. */ + @Native + static final int CAPS_EXT_TEXRECT = (FIRST_PRIVATE_CAP << 4); + /** Indicates the presence of the GL_NV_texture_barrier extension. */ + @Native + static final int CAPS_EXT_TEXBARRIER = (FIRST_PRIVATE_CAP << 5); + + + public MTLContextCaps(int caps, String adapterId) { + super(caps, adapterId); + } + + @Override + public String toString() { + StringBuilder sb = new StringBuilder(super.toString()); + if ((caps & CAPS_EXT_FBOBJECT) != 0) { + sb.append("CAPS_EXT_FBOBJECT|"); + } + if ((caps & CAPS_DOUBLEBUFFERED) != 0) { + sb.append("CAPS_DOUBLEBUFFERED|"); + } + if ((caps & CAPS_EXT_LCD_SHADER) != 0) { + sb.append("CAPS_EXT_LCD_SHADER|"); + } + if ((caps & CAPS_EXT_BIOP_SHADER) != 0) { + sb.append("CAPS_BIOP_SHADER|"); + } + if ((caps & CAPS_EXT_GRAD_SHADER) != 0) { + sb.append("CAPS_EXT_GRAD_SHADER|"); + } + if ((caps & CAPS_EXT_TEXRECT) != 0) { + sb.append("CAPS_EXT_TEXRECT|"); + } + if ((caps & CAPS_EXT_TEXBARRIER) != 0) { + sb.append("CAPS_EXT_TEXBARRIER|"); + } + return sb.toString(); + } + } +}