/**
* This method is called on a destination SurfaceData to choose the best SurfaceData from a source
* Image for an imaging operation, with help from its SurfaceManager. The method may determine
* that the default SurfaceData was really the best choice in the first place, or it may decide to
* use a cached surface. Some general decisions about whether acceleration is enabled are made by
* this method, but any decision based on the type of the source image is made in the makeProxyFor
* method below when it comes up with the appropriate SurfaceDataProxy instance. The parameters
* describe the type of imaging operation being performed.
*
* <p>If a blitProxyKey was supplied by the subclass then it is used to potentially override the
* choice of source SurfaceData. The outline of this process is:
*
* <ol>
* <li>Image pipeline asks destSD to find an appropriate srcSD for a given source Image object.
* <li>destSD gets the SurfaceManager of the source Image and first retrieves the default SD
* from it using getPrimarySurfaceData()
* <li>destSD uses its "blit proxy key" (if set) to look for some cached data stored in the
* source SurfaceManager
* <li>If the cached data is null then makeProxyFor() is used to create some cached data which
* is stored back in the source SurfaceManager under the same key for future uses.
* <li>The cached data will be a SurfaceDataProxy object.
* <li>The SurfaceDataProxy object is then consulted to return a replacement SurfaceData object
* (typically a cached copy if appropriate, or the original if not).
* </ol>
*/
public SurfaceData getSourceSurfaceData(
Image img, int txtype, CompositeType comp, Color bgColor) {
SurfaceManager srcMgr = SurfaceManager.getManager(img);
SurfaceData srcData = srcMgr.getPrimarySurfaceData();
if (img.getAccelerationPriority() > 0.0f && blitProxyKey != null) {
SurfaceDataProxy sdp = (SurfaceDataProxy) srcMgr.getCacheData(blitProxyKey);
if (sdp == null || !sdp.isValid()) {
if (srcData.getState() == State.UNTRACKABLE) {
sdp = SurfaceDataProxy.UNCACHED;
} else {
sdp = makeProxyFor(srcData);
}
srcMgr.setCacheData(blitProxyKey, sdp);
}
srcData = sdp.replaceData(srcData, txtype, comp, bgColor);
}
return srcData;
}
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 <= sg2d.COMP_ISCOPY && sg2d.paintState <= sg2d.PAINT_ALPHACOLOR)
||
/* CompositeType.SrcOver (any color) */
(sg2d.compositeState == sg2d.COMP_ALPHA
&& sg2d.paintState <= sg2d.PAINT_ALPHACOLOR
&& (((AlphaComposite) sg2d.composite).getRule() == AlphaComposite.SRC_OVER))
||
/* CompositeType.Xor (any color) */
(sg2d.compositeState == sg2d.COMP_XOR && sg2d.paintState <= sg2d.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 <= sg2d.PAINT_ALPHACOLOR) {
if (sg2d.compositeState <= sg2d.COMP_XOR) {
txPipe = oglTxRenderPipe;
nonTxPipe = oglRenderPipe;
}
} else if (sg2d.compositeState <= sg2d.COMP_ALPHA) {
if (OGLPaints.isValid(sg2d)) {
txPipe = oglTxRenderPipe;
nonTxPipe = oglRenderPipe;
}
// custom paints handled by super.validatePipe() below
}
} else {
if (sg2d.paintState <= sg2d.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 == sg2d.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 >= sg2d.TRANSFORM_TRANSLATESCALE) {
sg2d.drawpipe = txPipe;
sg2d.fillpipe = txPipe;
} else if (sg2d.strokeState != sg2d.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;
}
public static void markDirty(Image img) {
SurfaceData.getPrimarySurfaceData(img).markDirty();
}