author | dxu |
Thu, 04 Apr 2013 15:39:17 -0700 | |
changeset 16734 | da1901d79073 |
parent 12813 | c10ab96dcf41 |
child 16739 | 018660b0c613 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.java2d.opengl; |
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import sun.java2d.pipe.BufferedContext; |
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import sun.java2d.pipe.RenderBuffer; |
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import sun.java2d.pipe.RenderQueue; |
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import sun.java2d.pipe.hw.ContextCapabilities; |
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import static sun.java2d.pipe.BufferedOpCodes.*; |
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import static sun.java2d.pipe.hw.ContextCapabilities.*; |
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import java.lang.annotation.Native; |
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/** |
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* Note that the RenderQueue lock must be acquired before calling any of |
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* the methods in this class. |
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*/ |
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public class OGLContext extends BufferedContext { |
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private final OGLGraphicsConfig config; |
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OGLContext(RenderQueue rq, OGLGraphicsConfig config) { |
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super(rq); |
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this.config = config; |
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} |
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/** |
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* Convenience method that delegates to setScratchSurface() below. |
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*/ |
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static void setScratchSurface(OGLGraphicsConfig gc) { |
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setScratchSurface(gc.getNativeConfigInfo()); |
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} |
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/** |
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* Makes the given GraphicsConfig's context current to its associated |
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* "scratch surface". Each GraphicsConfig maintains a native context |
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* (GLXContext on Unix, HGLRC on Windows) as well as a native pbuffer |
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* known as the "scratch surface". By making the context current to the |
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* scratch surface, we are assured that we have a current context for |
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* the relevant GraphicsConfig, and can therefore perform operations |
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* depending on the capabilities of that GraphicsConfig. For example, |
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* if the GraphicsConfig supports the GL_ARB_texture_non_power_of_two |
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* extension, then we should be able to make a non-pow2 texture for this |
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* GraphicsConfig once we make the context current to the scratch surface. |
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* |
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* This method should be used for operations with an OpenGL texture |
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* as the destination surface (e.g. a sw->texture blit loop), or in those |
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* situations where we may not otherwise have a current context (e.g. |
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* when disposing a texture-based surface). |
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*/ |
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static void setScratchSurface(long pConfigInfo) { |
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// assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread(); |
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// invalidate the current context |
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currentContext = null; |
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// set the scratch context |
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OGLRenderQueue rq = OGLRenderQueue.getInstance(); |
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RenderBuffer buf = rq.getBuffer(); |
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rq.ensureCapacityAndAlignment(12, 4); |
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buf.putInt(SET_SCRATCH_SURFACE); |
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buf.putLong(pConfigInfo); |
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} |
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/** |
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* Invalidates the currentContext field to ensure that we properly |
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* revalidate the OGLContext (make it current, etc.) next time through |
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* the validate() method. This is typically invoked from methods |
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* that affect the current context state (e.g. disposing a context or |
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* surface). |
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*/ |
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static void invalidateCurrentContext() { |
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// assert OGLRenderQueue.getInstance().lock.isHeldByCurrentThread(); |
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// invalidate the current Java-level context so that we |
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// revalidate everything the next time around |
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if (currentContext != null) { |
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currentContext.invalidateContext(); |
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currentContext = null; |
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} |
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// invalidate the context reference at the native level, and |
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// then flush the queue so that we have no pending operations |
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// dependent on the current context |
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OGLRenderQueue rq = OGLRenderQueue.getInstance(); |
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rq.ensureCapacity(4); |
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rq.getBuffer().putInt(INVALIDATE_CONTEXT); |
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rq.flushNow(); |
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} |
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public RenderQueue getRenderQueue() { |
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return OGLRenderQueue.getInstance(); |
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} |
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/** |
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* Returns a string representing adapter id (vendor, renderer, version). |
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* Must be called on the rendering thread. |
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* |
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* @return an id string for the adapter |
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*/ |
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static final native String getOGLIdString(); |
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@Override |
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public void saveState() { |
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// assert rq.lock.isHeldByCurrentThread(); |
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// reset all attributes of this and current contexts |
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invalidateContext(); |
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invalidateCurrentContext(); |
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setScratchSurface(config); |
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// save the state on the native level |
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rq.ensureCapacity(4); |
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buf.putInt(SAVE_STATE); |
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rq.flushNow(); |
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} |
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@Override |
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public void restoreState() { |
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// assert rq.lock.isHeldByCurrentThread(); |
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// reset all attributes of this and current contexts |
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invalidateContext(); |
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invalidateCurrentContext(); |
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setScratchSurface(config); |
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// restore the state on the native level |
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rq.ensureCapacity(4); |
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buf.putInt(RESTORE_STATE); |
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rq.flushNow(); |
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} |
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static class OGLContextCaps extends ContextCapabilities { |
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/** |
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* Indicates the presence of the GL_EXT_framebuffer_object extension. |
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* This cap will only be set if the fbobject system property has been |
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* enabled and we are able to create an FBO with depth buffer. |
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*/ |
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parents:
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changeset
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@Native static final int CAPS_EXT_FBOBJECT = |
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(CAPS_RT_TEXTURE_ALPHA | CAPS_RT_TEXTURE_OPAQUE); |
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/** Indicates that the context supports a stored alpha channel. */ |
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@Native static final int CAPS_STORED_ALPHA = CAPS_RT_PLAIN_ALPHA; |
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/** Indicates that the context is doublebuffered. */ |
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@Native static final int CAPS_DOUBLEBUFFERED = (FIRST_PRIVATE_CAP << 0); |
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/** |
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* Indicates the presence of the GL_ARB_fragment_shader extension. |
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* This cap will only be set if the lcdshader system property has been |
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* enabled and the hardware supports the minimum number of texture units |
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*/ |
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@Native static final int CAPS_EXT_LCD_SHADER = (FIRST_PRIVATE_CAP << 1); |
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/** |
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* Indicates the presence of the GL_ARB_fragment_shader extension. |
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* This cap will only be set if the biopshader system property has been |
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* enabled and the hardware meets our minimum requirements. |
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*/ |
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@Native static final int CAPS_EXT_BIOP_SHADER = (FIRST_PRIVATE_CAP << 2); |
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/** |
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* Indicates the presence of the GL_ARB_fragment_shader extension. |
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* This cap will only be set if the gradshader system property has been |
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* enabled and the hardware meets our minimum requirements. |
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*/ |
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@Native static final int CAPS_EXT_GRAD_SHADER = (FIRST_PRIVATE_CAP << 3); |
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/** Indicates the presence of the GL_ARB_texture_rectangle extension. */ |
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@Native static final int CAPS_EXT_TEXRECT = (FIRST_PRIVATE_CAP << 4); |
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OGLContextCaps(int caps, String adapterId) { |
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super(caps, adapterId); |
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} |
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@Override |
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public String toString() { |
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StringBuffer buf = new StringBuffer(super.toString()); |
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if ((caps & CAPS_EXT_FBOBJECT) != 0) { |
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buf.append("CAPS_EXT_FBOBJECT|"); |
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} |
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if ((caps & CAPS_STORED_ALPHA) != 0) { |
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buf.append("CAPS_STORED_ALPHA|"); |
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} |
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if ((caps & CAPS_DOUBLEBUFFERED) != 0) { |
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buf.append("CAPS_DOUBLEBUFFERED|"); |
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} |
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if ((caps & CAPS_EXT_LCD_SHADER) != 0) { |
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buf.append("CAPS_EXT_LCD_SHADER|"); |
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} |
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if ((caps & CAPS_EXT_BIOP_SHADER) != 0) { |
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buf.append("CAPS_BIOP_SHADER|"); |
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} |
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if ((caps & CAPS_EXT_GRAD_SHADER) != 0) { |
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buf.append("CAPS_EXT_GRAD_SHADER|"); |
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} |
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if ((caps & CAPS_EXT_TEXRECT) != 0) { |
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buf.append("CAPS_EXT_TEXRECT|"); |
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} |
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return buf.toString(); |
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} |
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} |
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} |