| /* | |
| * Copyright (c) 2003, 2024, 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 java.awt.AlphaComposite; | |
| import java.awt.Composite; | |
| import java.awt.GraphicsConfiguration; | |
| import java.awt.GraphicsEnvironment; | |
| import java.awt.Rectangle; | |
| import java.awt.Transparency; | |
| import java.awt.image.ColorModel; | |
| import java.awt.image.Raster; | |
| import sun.awt.SunHints; | |
| import sun.awt.image.PixelConverter; | |
| import sun.java2d.pipe.hw.AccelSurface; | |
| import sun.java2d.SunGraphics2D; | |
| import sun.java2d.SurfaceData; | |
| import sun.java2d.SurfaceDataProxy; | |
| import sun.java2d.loops.CompositeType; | |
| import sun.java2d.loops.GraphicsPrimitive; | |
| import sun.java2d.loops.MaskFill; | |
| import sun.java2d.loops.SurfaceType; | |
| import sun.java2d.pipe.ParallelogramPipe; | |
| import sun.java2d.pipe.PixelToParallelogramConverter; | |
| import sun.java2d.pipe.RenderBuffer; | |
| import sun.java2d.pipe.TextPipe; | |
| import static sun.java2d.pipe.BufferedOpCodes.*; | |
| import static sun.java2d.opengl.OGLContext.OGLContextCaps.*; | |
| /** | |
| * This class describes an OpenGL "surface", that is, a region of pixels | |
| * managed via OpenGL. An OGLSurfaceData can be tagged with one of three | |
| * different SurfaceType objects for the purpose of registering loops, etc. | |
| * This diagram shows the hierarchy of OGL SurfaceTypes: | |
| * | |
| * Any | |
| * / \ | |
| * OpenGLSurface OpenGLTexture | |
| * | | |
| * OpenGLSurfaceRTT | |
| * | |
| * OpenGLSurface | |
| * This kind of surface can be rendered to using OpenGL APIs. It is also | |
| * possible to copy an OpenGLSurface to another OpenGLSurface (or to itself). | |
| * This is typically accomplished by calling MakeContextCurrent(dstSD, srcSD) | |
| * and then calling glCopyPixels() (although there are other techniques to | |
| * achieve the same goal). | |
| * | |
| * OpenGLTexture | |
| * This kind of surface cannot be rendered to using OpenGL (in the same sense | |
| * as in OpenGLSurface). However, it is possible to upload a region of pixels | |
| * to an OpenGLTexture object via glTexSubImage2D(). One can also copy a | |
| * surface of type OpenGLTexture to an OpenGLSurface by binding the texture | |
| * to a quad and then rendering it to the destination surface (this process | |
| * is known as "texture mapping"). | |
| * | |
| * OpenGLSurfaceRTT | |
| * This kind of surface can be thought of as a sort of hybrid between | |
| * OpenGLSurface and OpenGLTexture, in that one can render to this kind of | |
| * surface as if it were of type OpenGLSurface, but the process of copying | |
| * this kind of surface to another is more like an OpenGLTexture. (Note that | |
| * "RTT" stands for "render-to-texture".) | |
| * | |
| * In addition to these SurfaceType variants, we have also defined some | |
| * constants that describe in more detail the type of underlying OpenGL | |
| * surface. This table helps explain the relationships between those | |
| * "type" constants and their corresponding SurfaceType: | |
| * | |
| * OGL Type Corresponding SurfaceType | |
| * -------- ------------------------- | |
| * WINDOW OpenGLSurface | |
| * TEXTURE OpenGLTexture | |
| * FLIP_BACKBUFFER OpenGLSurface | |
| * FBOBJECT OpenGLSurfaceRTT | |
| */ | |
| public abstract class OGLSurfaceData extends SurfaceData | |
| implements AccelSurface { | |
| /** | |
| * OGL-specific surface types | |
| * | |
| * @see sun.java2d.pipe.hw.AccelSurface | |
| */ | |
| public static final int FBOBJECT = RT_TEXTURE; | |
| /** | |
| * Pixel formats | |
| */ | |
| public static final int PF_INT_ARGB = 0; | |
| public static final int PF_INT_ARGB_PRE = 1; | |
| public static final int PF_INT_RGB = 2; | |
| public static final int PF_INT_RGBX = 3; | |
| public static final int PF_INT_BGR = 4; | |
| public static final int PF_INT_BGRX = 5; | |
| public static final int PF_USHORT_565_RGB = 6; | |
| public static final int PF_USHORT_555_RGB = 7; | |
| public static final int PF_USHORT_555_RGBX = 8; | |
| public static final int PF_BYTE_GRAY = 9; | |
| public static final int PF_USHORT_GRAY = 10; | |
| public static final int PF_3BYTE_BGR = 11; | |
| /** | |
| * SurfaceTypes | |
| */ | |
| private static final String DESC_OPENGL_SURFACE = "OpenGL Surface"; | |
| private static final String DESC_OPENGL_SURFACE_RTT = | |
| "OpenGL Surface (render-to-texture)"; | |
| private static final String DESC_OPENGL_TEXTURE = "OpenGL Texture"; | |
| static final SurfaceType OpenGLSurface = | |
| SurfaceType.Any.deriveSubType(DESC_OPENGL_SURFACE, | |
| PixelConverter.ArgbPre.instance); | |
| static final SurfaceType OpenGLSurfaceRTT = | |
| OpenGLSurface.deriveSubType(DESC_OPENGL_SURFACE_RTT); | |
| static final SurfaceType OpenGLTexture = | |
| SurfaceType.Any.deriveSubType(DESC_OPENGL_TEXTURE); | |
| /** This will be true if the fbobject system property has been enabled. */ | |
| private static boolean isFBObjectEnabled; | |
| /** This will be true if the lcdshader system property has been enabled.*/ | |
| private static boolean isLCDShaderEnabled; | |
| /** This will be true if the biopshader system property has been enabled.*/ | |
| private static boolean isBIOpShaderEnabled; | |
| /** This will be true if the gradshader system property has been enabled.*/ | |
| private static boolean isGradShaderEnabled; | |
| private OGLGraphicsConfig graphicsConfig; | |
| protected int type; | |
| // these fields are set from the native code when the surface is | |
| // initialized | |
| private int nativeWidth, nativeHeight; | |
| protected static OGLRenderer oglRenderPipe; | |
| protected static PixelToParallelogramConverter oglTxRenderPipe; | |
| protected static ParallelogramPipe oglAAPgramPipe; | |
| protected static OGLTextRenderer oglTextPipe; | |
| protected static OGLDrawImage oglImagePipe; | |
| protected native boolean initTexture(long pData, | |
| boolean isOpaque, boolean texNonPow2, | |
| boolean texRect, | |
| int width, int height); | |
| protected native boolean initFBObject(long pData, | |
| boolean isOpaque, boolean texNonPow2, | |
| boolean texRect, | |
| int width, int height); | |
| protected native boolean initFlipBackbuffer(long pData); | |
| private native int getTextureTarget(long pData); | |
| private native int getTextureID(long pData); | |
| static { | |
| if (!GraphicsEnvironment.isHeadless()) { | |
| // fbobject currently enabled by default; use "false" to disable | |
| String fbo = System.getProperty("sun.java2d.opengl.fbobject"); | |
| isFBObjectEnabled = !"false".equals(fbo); | |
| // lcdshader currently enabled by default; use "false" to disable | |
| String lcd = System.getProperty("sun.java2d.opengl.lcdshader"); | |
| isLCDShaderEnabled = !"false".equals(lcd); | |
| // biopshader currently enabled by default; use "false" to disable | |
| String biop = System.getProperty("sun.java2d.opengl.biopshader"); | |
| isBIOpShaderEnabled = !"false".equals(biop); | |
| // gradshader currently enabled by default; use "false" to disable | |
| String grad = System.getProperty("sun.java2d.opengl.gradshader"); | |
| isGradShaderEnabled = !"false".equals(grad); | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| oglImagePipe = new OGLDrawImage(); | |
| oglTextPipe = new OGLTextRenderer(rq); | |
| oglRenderPipe = new OGLRenderer(rq); | |
| if (GraphicsPrimitive.tracingEnabled()) { | |
| oglTextPipe = oglTextPipe.traceWrap(); | |
| //The wrapped oglRenderPipe will wrap the AA pipe as well... | |
| //oglAAPgramPipe = oglRenderPipe.traceWrap(); | |
| } | |
| oglAAPgramPipe = oglRenderPipe.getAAParallelogramPipe(); | |
| oglTxRenderPipe = | |
| new PixelToParallelogramConverter(oglRenderPipe, | |
| oglRenderPipe, | |
| 1.0, 0.25, true); | |
| OGLBlitLoops.register(); | |
| OGLMaskFill.register(); | |
| OGLMaskBlit.register(); | |
| } | |
| } | |
| protected OGLSurfaceData(OGLGraphicsConfig gc, | |
| ColorModel cm, int type) | |
| { | |
| super(getCustomSurfaceType(type), cm); | |
| this.graphicsConfig = gc; | |
| this.type = type; | |
| setBlitProxyCache(gc.getSurfaceDataProxyCache()); | |
| } | |
| @Override | |
| public SurfaceDataProxy makeProxyFor(SurfaceData srcData) { | |
| return OGLSurfaceDataProxy.createProxy(srcData, graphicsConfig); | |
| } | |
| /** | |
| * Returns the appropriate SurfaceType corresponding to the given OpenGL | |
| * surface type constant (e.g. TEXTURE -> OpenGLTexture). | |
| */ | |
| private static SurfaceType getCustomSurfaceType(int oglType) { | |
| switch (oglType) { | |
| case TEXTURE: | |
| return OpenGLTexture; | |
| case FBOBJECT: | |
| return OpenGLSurfaceRTT; | |
| default: | |
| return OpenGLSurface; | |
| } | |
| } | |
| /** | |
| * Note: This should only be called from the QFT under the AWT lock. | |
| * This method is kept separate from the initSurface() method below just | |
| * to keep the code a bit cleaner. | |
| */ | |
| private void initSurfaceNow(int width, int height) { | |
| boolean isOpaque = (getTransparency() == Transparency.OPAQUE); | |
| boolean success = false; | |
| switch (type) { | |
| case TEXTURE: | |
| success = initTexture(getNativeOps(), | |
| isOpaque, isTexNonPow2Available(), | |
| isTexRectAvailable(), | |
| width, height); | |
| break; | |
| case FBOBJECT: | |
| success = initFBObject(getNativeOps(), | |
| isOpaque, isTexNonPow2Available(), | |
| isTexRectAvailable(), | |
| width, height); | |
| break; | |
| case FLIP_BACKBUFFER: | |
| success = initFlipBackbuffer(getNativeOps()); | |
| break; | |
| default: | |
| break; | |
| } | |
| if (!success) { | |
| throw new OutOfMemoryError("can't create offscreen surface"); | |
| } | |
| } | |
| /** | |
| * Initializes the appropriate OpenGL offscreen surface based on the value | |
| * of the type parameter. If the surface creation fails for any reason, | |
| * an OutOfMemoryError will be thrown. | |
| */ | |
| protected void initSurface(final int width, final int height) { | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| rq.lock(); | |
| try { | |
| switch (type) { | |
| case TEXTURE: | |
| case FBOBJECT: | |
| // need to make sure the context is current before | |
| // creating the texture or fbobject | |
| OGLContext.setScratchSurface(graphicsConfig); | |
| break; | |
| default: | |
| break; | |
| } | |
| rq.flushAndInvokeNow(new Runnable() { | |
| public void run() { | |
| initSurfaceNow(width, height); | |
| } | |
| }); | |
| } finally { | |
| rq.unlock(); | |
| } | |
| } | |
| /** | |
| * Returns the OGLContext for the GraphicsConfig associated with this | |
| * surface. | |
| */ | |
| public final OGLContext getContext() { | |
| return graphicsConfig.getContext(); | |
| } | |
| /** | |
| * Returns the OGLGraphicsConfig associated with this surface. | |
| */ | |
| final OGLGraphicsConfig getOGLGraphicsConfig() { | |
| return graphicsConfig; | |
| } | |
| /** | |
| * Returns one of the surface type constants defined above. | |
| */ | |
| public final int getType() { | |
| return type; | |
| } | |
| /** | |
| * If this surface is backed by a texture object, returns the target | |
| * for that texture (either GL_TEXTURE_2D or GL_TEXTURE_RECTANGLE_ARB). | |
| * Otherwise, this method will return zero. | |
| */ | |
| public final int getTextureTarget() { | |
| return getTextureTarget(getNativeOps()); | |
| } | |
| /** | |
| * If this surface is backed by a texture object, returns the texture ID | |
| * for that texture. | |
| * Otherwise, this method will return zero. | |
| */ | |
| public final int getTextureID() { | |
| return getTextureID(getNativeOps()); | |
| } | |
| /** | |
| * Returns native resource of specified {@code resType} associated with | |
| * this surface. | |
| * | |
| * Specifically, for {@code OGLSurfaceData} this method returns the | |
| * the following: | |
| * <pre> | |
| * TEXTURE - texture id | |
| * </pre> | |
| * | |
| * Note: the resource returned by this method is only valid on the rendering | |
| * thread. | |
| * | |
| * @return native resource of specified type or 0L if | |
| * such resource doesn't exist or can not be retrieved. | |
| * @see sun.java2d.pipe.hw.AccelSurface#getNativeResource | |
| */ | |
| public long getNativeResource(int resType) { | |
| if (resType == TEXTURE) { | |
| return getTextureID(); | |
| } | |
| return 0L; | |
| } | |
| public Raster getRaster(int x, int y, int w, int h) { | |
| throw new InternalError("not implemented yet"); | |
| } | |
| /** | |
| * For now, we can only render LCD text if: | |
| * - the fragment shader extension is available, and | |
| * - the source color is opaque, and | |
| * - blending is SrcOverNoEa or disabled | |
| * - and the destination is opaque | |
| * | |
| * Eventually, we could enhance the native OGL text rendering code | |
| * and remove the above restrictions, but that would require significantly | |
| * more code just to support a few uncommon cases. | |
| */ | |
| public boolean canRenderLCDText(SunGraphics2D sg2d) { | |
| return | |
| graphicsConfig.isCapPresent(CAPS_EXT_LCD_SHADER) && | |
| sg2d.surfaceData.getTransparency() == Transparency.OPAQUE && | |
| sg2d.paintState <= SunGraphics2D.PAINT_OPAQUECOLOR && | |
| (sg2d.compositeState <= SunGraphics2D.COMP_ISCOPY || | |
| (sg2d.compositeState <= SunGraphics2D.COMP_ALPHA && canHandleComposite(sg2d.composite))); | |
| } | |
| private boolean canHandleComposite(Composite c) { | |
| if (c instanceof AlphaComposite) { | |
| AlphaComposite ac = (AlphaComposite)c; | |
| return ac.getRule() == AlphaComposite.SRC_OVER && ac.getAlpha() >= 1f; | |
| } | |
| return false; | |
| } | |
| public void validatePipe(SunGraphics2D sg2d) { | |
| TextPipe textpipe; | |
| boolean validated = false; | |
| // OGLTextRenderer handles both AA and non-AA text, but | |
| // only works with the following modes: | |
| // (Note: For LCD text we only enter this code path if | |
| // canRenderLCDText() has already validated that the mode is | |
| // CompositeType.SrcNoEa (opaque color), which will be subsumed | |
| // by the CompositeType.SrcNoEa (any color) test below.) | |
| if (/* CompositeType.SrcNoEa (any color) */ | |
| (sg2d.compositeState <= SunGraphics2D.COMP_ISCOPY && | |
| sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) || | |
| /* CompositeType.SrcOver (any color) */ | |
| (sg2d.compositeState == SunGraphics2D.COMP_ALPHA && | |
| sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR && | |
| (((AlphaComposite)sg2d.composite).getRule() == | |
| AlphaComposite.SRC_OVER)) || | |
| /* CompositeType.Xor (any color) */ | |
| (sg2d.compositeState == SunGraphics2D.COMP_XOR && | |
| sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR)) | |
| { | |
| textpipe = oglTextPipe; | |
| } else { | |
| // do this to initialize textpipe correctly; we will attempt | |
| // to override the non-text pipes below | |
| super.validatePipe(sg2d); | |
| textpipe = sg2d.textpipe; | |
| validated = true; | |
| } | |
| PixelToParallelogramConverter txPipe = null; | |
| OGLRenderer nonTxPipe = null; | |
| if (sg2d.antialiasHint != SunHints.INTVAL_ANTIALIAS_ON) { | |
| if (sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) { | |
| if (sg2d.compositeState <= SunGraphics2D.COMP_XOR) { | |
| txPipe = oglTxRenderPipe; | |
| nonTxPipe = oglRenderPipe; | |
| } | |
| } else if (sg2d.compositeState <= SunGraphics2D.COMP_ALPHA) { | |
| if (OGLPaints.isValid(sg2d)) { | |
| txPipe = oglTxRenderPipe; | |
| nonTxPipe = oglRenderPipe; | |
| } | |
| // custom paints handled by super.validatePipe() below | |
| } | |
| } else { | |
| if (sg2d.paintState <= SunGraphics2D.PAINT_ALPHACOLOR) { | |
| if (graphicsConfig.isCapPresent(CAPS_PS30) && | |
| (sg2d.imageComp == CompositeType.SrcOverNoEa || | |
| sg2d.imageComp == CompositeType.SrcOver)) | |
| { | |
| if (!validated) { | |
| super.validatePipe(sg2d); | |
| validated = true; | |
| } | |
| PixelToParallelogramConverter aaConverter = | |
| new PixelToParallelogramConverter(sg2d.shapepipe, | |
| oglAAPgramPipe, | |
| 1.0/8.0, 0.499, | |
| false); | |
| sg2d.drawpipe = aaConverter; | |
| sg2d.fillpipe = aaConverter; | |
| sg2d.shapepipe = aaConverter; | |
| } else if (sg2d.compositeState == SunGraphics2D.COMP_XOR) { | |
| // install the solid pipes when AA and XOR are both enabled | |
| txPipe = oglTxRenderPipe; | |
| nonTxPipe = oglRenderPipe; | |
| } | |
| } | |
| // other cases handled by super.validatePipe() below | |
| } | |
| if (txPipe != null) { | |
| if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) { | |
| sg2d.drawpipe = txPipe; | |
| sg2d.fillpipe = txPipe; | |
| } else if (sg2d.strokeState != SunGraphics2D.STROKE_THIN) { | |
| sg2d.drawpipe = txPipe; | |
| sg2d.fillpipe = nonTxPipe; | |
| } else { | |
| sg2d.drawpipe = nonTxPipe; | |
| sg2d.fillpipe = nonTxPipe; | |
| } | |
| // Note that we use the transforming pipe here because it | |
| // will examine the shape and possibly perform an optimized | |
| // operation if it can be simplified. The simplifications | |
| // will be valid for all STROKE and TRANSFORM types. | |
| sg2d.shapepipe = txPipe; | |
| } else { | |
| if (!validated) { | |
| super.validatePipe(sg2d); | |
| } | |
| } | |
| // install the text pipe based on our earlier decision | |
| sg2d.textpipe = textpipe; | |
| // always override the image pipe with the specialized OGL pipe | |
| sg2d.imagepipe = oglImagePipe; | |
| } | |
| @Override | |
| protected MaskFill getMaskFill(SunGraphics2D sg2d) { | |
| if (sg2d.paintState > SunGraphics2D.PAINT_ALPHACOLOR) { | |
| /* | |
| * We can only accelerate non-Color MaskFill operations if | |
| * all of the following conditions hold true: | |
| * - there is an implementation for the given paintState | |
| * - the current Paint can be accelerated for this destination | |
| * - multitexturing is available (since we need to modulate | |
| * the alpha mask texture with the paint texture) | |
| * | |
| * In all other cases, we return null, in which case the | |
| * validation code will choose a more general software-based loop. | |
| */ | |
| if (!OGLPaints.isValid(sg2d) || | |
| !graphicsConfig.isCapPresent(CAPS_MULTITEXTURE)) | |
| { | |
| return null; | |
| } | |
| } | |
| return super.getMaskFill(sg2d); | |
| } | |
| @Override | |
| public boolean copyArea(SunGraphics2D sg2d, int x, int y, int w, int h, | |
| int dx, int dy) { | |
| if (sg2d.compositeState >= SunGraphics2D.COMP_XOR) { | |
| return false; | |
| } | |
| oglRenderPipe.copyArea(sg2d, x, y, w, h, dx, dy); | |
| return true; | |
| } | |
| public void flush() { | |
| invalidate(); | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| rq.lock(); | |
| try { | |
| // make sure we have a current context before | |
| // disposing the native resources (e.g. texture object) | |
| OGLContext.setScratchSurface(graphicsConfig); | |
| RenderBuffer buf = rq.getBuffer(); | |
| rq.ensureCapacityAndAlignment(12, 4); | |
| buf.putInt(FLUSH_SURFACE); | |
| buf.putLong(getNativeOps()); | |
| // this call is expected to complete synchronously, so flush now | |
| rq.flushNow(); | |
| } finally { | |
| rq.unlock(); | |
| } | |
| } | |
| /** | |
| * Disposes the native resources associated with the given OGLSurfaceData | |
| * (referenced by the pData parameter). This method is invoked from | |
| * the native Dispose() method from the Disposer thread when the | |
| * Java-level OGLSurfaceData object is about to go away. Note that we | |
| * also pass a reference to the OGLGraphicsConfig | |
| * for the purposes of making a context current. | |
| */ | |
| static void dispose(long pData, OGLGraphicsConfig gc) { | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| rq.lock(); | |
| try { | |
| // make sure we have a current context before | |
| // disposing the native resources (e.g. texture object) | |
| OGLContext.setScratchSurface(gc); | |
| RenderBuffer buf = rq.getBuffer(); | |
| rq.ensureCapacityAndAlignment(12, 4); | |
| buf.putInt(DISPOSE_SURFACE); | |
| buf.putLong(pData); | |
| // this call is expected to complete synchronously, so flush now | |
| rq.flushNow(); | |
| } finally { | |
| rq.unlock(); | |
| } | |
| } | |
| static void swapBuffers(long window) { | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| rq.lock(); | |
| try { | |
| RenderBuffer buf = rq.getBuffer(); | |
| rq.ensureCapacityAndAlignment(12, 4); | |
| buf.putInt(SWAP_BUFFERS); | |
| buf.putLong(window); | |
| rq.flushNow(); | |
| } finally { | |
| rq.unlock(); | |
| } | |
| } | |
| /** | |
| * Returns true if OpenGL textures can have non-power-of-two dimensions | |
| * when using the basic GL_TEXTURE_2D target. | |
| */ | |
| boolean isTexNonPow2Available() { | |
| return graphicsConfig.isCapPresent(CAPS_TEXNONPOW2); | |
| } | |
| /** | |
| * Returns true if OpenGL textures can have non-power-of-two dimensions | |
| * when using the GL_TEXTURE_RECTANGLE_ARB target (only available when the | |
| * GL_ARB_texture_rectangle extension is present). | |
| */ | |
| boolean isTexRectAvailable() { | |
| return graphicsConfig.isCapPresent(CAPS_EXT_TEXRECT); | |
| } | |
| public Rectangle getNativeBounds() { | |
| OGLRenderQueue rq = OGLRenderQueue.getInstance(); | |
| rq.lock(); | |
| try { | |
| return new Rectangle(nativeWidth, nativeHeight); | |
| } finally { | |
| rq.unlock(); | |
| } | |
| } | |
| /** | |
| * Returns true if the surface is an on-screen window surface or | |
| * a FBO texture attached to an on-screen CALayer. | |
| * | |
| * Needed by Mac OS X port. | |
| */ | |
| boolean isOnScreen() { | |
| return getType() == WINDOW; | |
| } | |
| } |