| /* |
| * Copyright (c) 2004, 2008, 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.opengl; |
| |
| import sun.java2d.pipe.BufferedContext; |
| import sun.java2d.pipe.RenderBuffer; |
| import sun.java2d.pipe.RenderQueue; |
| import sun.java2d.pipe.hw.ContextCapabilities; |
| import static sun.java2d.pipe.BufferedOpCodes.*; |
| import static sun.java2d.pipe.hw.ContextCapabilities.*; |
| |
| /** |
| * Note that the RenderQueue lock must be acquired before calling any of |
| * the methods in this class. |
| */ |
| public class OGLContext extends BufferedContext { |
| |
| private final OGLGraphicsConfig config; |
| |
| OGLContext(RenderQueue rq, OGLGraphicsConfig config) { |
| super(rq); |
| this.config = config; |
| } |
| |
| /** |
| * Convenience method that delegates to setScratchSurface() below. |
| */ |
| static void setScratchSurface(OGLGraphicsConfig gc) { |
| setScratchSurface(gc.getNativeConfigInfo()); |
| } |
| |
| /** |
| * Makes the given GraphicsConfig's context current to its associated |
| * "scratch surface". Each GraphicsConfig maintains a native context |
| * (GLXContext on Unix, HGLRC on Windows) 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. For example, |
| * if the GraphicsConfig supports the GL_ARB_texture_non_power_of_two |
| * extension, then we should be able to make a non-pow2 texture for this |
| * GraphicsConfig once we make the context current to the scratch surface. |
| * |
| * This method should be used for operations with an OpenGL 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). |
| */ |
| static void setScratchSurface(long pConfigInfo) { |
| // assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread(); |
| |
| // invalidate the current context |
| currentContext = null; |
| |
| // set the scratch context |
| OGLRenderQueue rq = OGLRenderQueue.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 OGLContext (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). |
| */ |
| static void invalidateCurrentContext() { |
| // assert OGLRenderQueue.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 |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); |
| rq.ensureCapacity(4); |
| rq.getBuffer().putInt(INVALIDATE_CONTEXT); |
| rq.flushNow(); |
| } |
| |
| public RenderQueue getRenderQueue() { |
| return OGLRenderQueue.getInstance(); |
| } |
| |
| /** |
| * Returns a string representing adapter id (vendor, renderer, version). |
| * Must be called on the rendering thread. |
| * |
| * @return an id string for the adapter |
| */ |
| static final native String getOGLIdString(); |
| |
| @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(); |
| } |
| |
| static class OGLContextCaps extends ContextCapabilities { |
| /** |
| * Indicates the presence of the GL_EXT_framebuffer_object extension. |
| * 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. |
| */ |
| static final int CAPS_EXT_FBOBJECT = |
| (CAPS_RT_TEXTURE_ALPHA | CAPS_RT_TEXTURE_OPAQUE); |
| /** Indicates that the context supports a stored alpha channel. */ |
| static final int CAPS_STORED_ALPHA = CAPS_RT_PLAIN_ALPHA; |
| /** Indicates that the context is doublebuffered. */ |
| static final int CAPS_DOUBLEBUFFERED = (FIRST_PRIVATE_CAP << 0); |
| /** |
| * Indicates the presence of the GL_ARB_fragment_shader extension. |
| * This cap will only be set if the lcdshader system property has been |
| * enabled and the hardware supports the minimum number of texture units |
| */ |
| static final int CAPS_EXT_LCD_SHADER = (FIRST_PRIVATE_CAP << 1); |
| /** |
| * Indicates the presence of the GL_ARB_fragment_shader extension. |
| * This cap will only be set if the biopshader system property has been |
| * enabled and the hardware meets our minimum requirements. |
| */ |
| static final int CAPS_EXT_BIOP_SHADER = (FIRST_PRIVATE_CAP << 2); |
| /** |
| * Indicates the presence of the GL_ARB_fragment_shader extension. |
| * This cap will only be set if the gradshader system property has been |
| * enabled and the hardware meets our minimum requirements. |
| */ |
| static final int CAPS_EXT_GRAD_SHADER = (FIRST_PRIVATE_CAP << 3); |
| /** Indicates the presence of the GL_ARB_texture_rectangle extension. */ |
| static final int CAPS_EXT_TEXRECT = (FIRST_PRIVATE_CAP << 4); |
| |
| OGLContextCaps(int caps, String adapterId) { |
| super(caps, adapterId); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuffer buf = new StringBuffer(super.toString()); |
| if ((caps & CAPS_EXT_FBOBJECT) != 0) { |
| buf.append("CAPS_EXT_FBOBJECT|"); |
| } |
| if ((caps & CAPS_STORED_ALPHA) != 0) { |
| buf.append("CAPS_STORED_ALPHA|"); |
| } |
| if ((caps & CAPS_DOUBLEBUFFERED) != 0) { |
| buf.append("CAPS_DOUBLEBUFFERED|"); |
| } |
| if ((caps & CAPS_EXT_LCD_SHADER) != 0) { |
| buf.append("CAPS_EXT_LCD_SHADER|"); |
| } |
| if ((caps & CAPS_EXT_BIOP_SHADER) != 0) { |
| buf.append("CAPS_BIOP_SHADER|"); |
| } |
| if ((caps & CAPS_EXT_GRAD_SHADER) != 0) { |
| buf.append("CAPS_EXT_GRAD_SHADER|"); |
| } |
| if ((caps & CAPS_EXT_TEXRECT) != 0) { |
| buf.append("CAPS_EXT_TEXRECT|"); |
| } |
| return buf.toString(); |
| } |
| } |
| } |