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/*
* Copyright (c) 2009, 2022, 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
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package com.sun.prism.impl;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import com.sun.glass.ui.Screen;
import com.sun.javafx.font.FontResource;
import com.sun.javafx.font.FontStrike;
import com.sun.javafx.geom.RectBounds;
import com.sun.javafx.geom.transform.BaseTransform;
import com.sun.javafx.geom.transform.GeneralTransform3D;
import com.sun.javafx.image.ByteToBytePixelConverter;
import com.sun.javafx.image.impl.ByteGray;
import com.sun.javafx.sg.prism.NGCamera;
import com.sun.prism.PixelFormat;
import com.sun.prism.RTTexture;
import com.sun.prism.RenderTarget;
import com.sun.prism.ResourceFactory;
import com.sun.prism.Texture;
import com.sun.prism.Texture.WrapMode;
import com.sun.prism.impl.paint.PaintUtil;
import com.sun.prism.impl.shape.MaskData;
import com.sun.prism.paint.Gradient;
public abstract class BaseContext {
private final Screen screen;
private final ResourceFactory factory;
private final VertexBuffer vertexBuffer;
private boolean disposed = false;
private static final int MIN_MASK_DIM = 1024;
private Texture maskTex;
private ByteBuffer maskBuffer;
private ByteBuffer clearBuffer;
private int curMaskRow;
private int nextMaskRow;
private int curMaskCol;
private int highMaskCol;
private Texture paintTex;
private int[] paintPixels;
private ByteBuffer paintBuffer;
private Texture rectTex;
private int rectTexMax;
private Texture wrapRectTex;
private Texture ovalTex;
private final GeneralTransform3D perspectiveTransform = new GeneralTransform3D();
private final Map
greyGlyphCaches = new HashMap<>();
private final Map
lcdGlyphCaches = new HashMap<>();
protected BaseContext(Screen screen, ResourceFactory factory, int vbQuads) {
this.screen = screen;
this.factory = factory;
this.vertexBuffer = new VertexBuffer(this, vbQuads);
}
protected void setDeviceParametersFor2D() {}
protected void setDeviceParametersFor3D() {}
public Screen getAssociatedScreen() {
return screen;
}
public ResourceFactory getResourceFactory() {
return factory;
}
public VertexBuffer getVertexBuffer() {
return vertexBuffer;
}
public void flushVertexBuffer() {
if (checkDisposed()) return;
vertexBuffer.flush();
}
protected final void flushMask() {
if (curMaskRow > 0 || curMaskCol > 0) {
maskTex.lock();
// assert !maskTex.isSurfaceLost();
// since it was bound and unflushed...
maskTex.update(maskBuffer, maskTex.getPixelFormat(),
0, 0, 0, 0, highMaskCol, nextMaskRow,
maskTex.getContentWidth(), true);
maskTex.unlock();
curMaskRow = curMaskCol = nextMaskRow = highMaskCol = 0;
}
}
public void drawQuads(float coordArray[], byte colorArray[], int numVertices) {
flushMask();
renderQuads(coordArray, colorArray, numVertices);
}
protected GeneralTransform3D getPerspectiveTransformNoClone() {
return perspectiveTransform;
}
protected void setPerspectiveTransform(GeneralTransform3D transform) {
if (transform == null) {
perspectiveTransform.setIdentity();
} else {
perspectiveTransform.set(transform);
}
}
protected abstract void renderQuads(float coordArray[], byte colorArray[], int numVertices);
/**
*
* This method will call releaseRenderTarget method to reset last
* renderTarget and textures if g is null
*/
public void setRenderTarget(BaseGraphics g) {
if (g != null) {
setRenderTarget(g.getRenderTarget(), g.getCameraNoClone(),
g.isDepthTest() && g.isDepthBuffer(), g.isState3D());
} else {
releaseRenderTarget();
}
}
protected void releaseRenderTarget() {
// Default implementation is a no-op. A pipeline may override if needed.
}
protected abstract void setRenderTarget(RenderTarget target, NGCamera camera,
boolean depthTest, boolean state3D);
public abstract void validateClearOp(BaseGraphics g);
public abstract void validatePaintOp(BaseGraphics g, BaseTransform xform,
Texture maskTex,
float bx, float by, float bw, float bh);
public abstract void validateTextureOp(BaseGraphics g, BaseTransform xform,
Texture src, PixelFormat format);
public void clearGlyphCaches() {
clearCaches(greyGlyphCaches);
clearCaches(lcdGlyphCaches);
}
private void clearCaches(Map glyphCaches) {
for (Iterator iter = glyphCaches.keySet().iterator(); iter.hasNext();) {
iter.next().clearDesc();
}
for (GlyphCache cache : glyphCaches.values()) {
if (cache != null) {
cache.clear();
}
}
glyphCaches.clear();
}
abstract public RTTexture getLCDBuffer();
public GlyphCache getGlyphCache(FontStrike strike) {
Map glyphCaches =
(strike.getAAMode() ==FontResource.AA_LCD)
? lcdGlyphCaches : greyGlyphCaches;
return getGlyphCache(strike, glyphCaches);
}
public boolean isSuperShaderEnabled() {
return false;
}
private GlyphCache getGlyphCache(FontStrike strike,
Map glyphCaches) {
if (checkDisposed()) return null;
GlyphCache glyphCache = glyphCaches.get(strike);
if (glyphCache == null) {
glyphCache = new GlyphCache(this, strike);
glyphCaches.put(strike, glyphCache);
}
return glyphCache;
}
public Texture validateMaskTexture(MaskData maskData, boolean canScale) {
if (checkDisposed()) return null;
int pad = canScale ? 1 : 0;
int needW = maskData.getWidth() + pad + pad;
int needH = maskData.getHeight() + pad + pad;
int texW = 0, texH = 0;
if (maskTex != null) {
maskTex.lock();
if (maskTex.isSurfaceLost()) {
maskTex = null;
} else {
texW = maskTex.getContentWidth();
texH = maskTex.getContentHeight();
}
}
if (maskTex == null || texW < needW || texH < needH) {
if (maskTex != null) {
flushVertexBuffer();
maskTex.dispose();
maskTex = null;
}
maskBuffer = null;
// grow the mask texture so that the new one is always
// at least as large as the previous one; this avoids
// lots of creation/disposal when the shapes alternate
// between narrow/tall and wide/short
int newTexW = Math.max(MIN_MASK_DIM, Math.max(needW, texW));
int newTexH = Math.max(MIN_MASK_DIM, Math.max(needH, texH));
maskTex = getResourceFactory().
createMaskTexture(newTexW, newTexH, WrapMode.CLAMP_NOT_NEEDED);
maskBuffer = ByteBuffer.allocate(newTexW * newTexH);
if (clearBuffer == null || clearBuffer.capacity() < newTexW) {
clearBuffer = null;
clearBuffer = ByteBuffer.allocate(newTexW);
}
curMaskRow = curMaskCol = nextMaskRow = highMaskCol = 0;
}
return maskTex;
}
public void updateMaskTexture(MaskData maskData, RectBounds maskBounds, boolean canScale) {
if (checkDisposed()) return;
// assert maskTex bound as texture 1...
maskTex.assertLocked();
int maskW = maskData.getWidth();
int maskH = maskData.getHeight();
int texW = maskTex.getContentWidth();
int texH = maskTex.getContentHeight();
int pad = canScale ? 1 : 0;
int needW = maskW + pad + pad;
int needH = maskH + pad + pad;
if (curMaskCol + needW > texW) {
curMaskCol = 0;
curMaskRow = nextMaskRow;
}
if (curMaskRow + needH > texH) {
flushVertexBuffer();
}
int offset = curMaskRow * texW + curMaskCol;
ByteToBytePixelConverter b2bpc = ByteGray.ToByteGrayConverter();
if (canScale) {
// [UL => UR)
int off = offset;
b2bpc.convert(clearBuffer, 0, 0, maskBuffer, off, texW, maskW + 1, 1);
// [UR => LR)
off = offset + maskW + 1;
b2bpc.convert(clearBuffer, 0, 0, maskBuffer, off, texW, 1, maskH + 1);
// (UL => LL]
off = offset + texW; // UL corner + 1 row
b2bpc.convert(clearBuffer, 0, 0, maskBuffer, off, texW, 1, maskH + 1);
// (LL => LR]
off = offset + (maskH + 1) * texW + 1; // LL corner + 1 col
b2bpc.convert(clearBuffer, 0, 0, maskBuffer, off, texW, maskW + 1, 1);
offset += texW + 1;
}
b2bpc.convert(maskData.getMaskBuffer(), 0, maskW,
maskBuffer, offset, texW,
maskW, maskH);
float physW = maskTex.getPhysicalWidth();
float physH = maskTex.getPhysicalHeight();
maskBounds.setMinX((curMaskCol + pad ) / physW);
maskBounds.setMinY((curMaskRow + pad ) / physH);
maskBounds.setMaxX((curMaskCol + pad + maskW) / physW);
maskBounds.setMaxY((curMaskRow + pad + maskH) / physH);
curMaskCol = curMaskCol + needW;
if (highMaskCol < curMaskCol) highMaskCol = curMaskCol;
if (nextMaskRow < curMaskRow + needH) nextMaskRow = curMaskRow + needH;
}
public int getRectTextureMaxSize() {
if (checkDisposed()) return 0;
if (rectTex == null) {
createRectTexture();
}
return rectTexMax;
}
public Texture getRectTexture() {
if (checkDisposed()) return null;
if (rectTex == null) {
createRectTexture();
}
// rectTex is left permanent and locked so it never
// goes away or needs to be checked for isSurfaceLost(), but we
// add a lock here so that the caller can unlock without knowing
// our inner implementation details
rectTex.lock();
return rectTex;
}
private void createRectTexture() {
if (checkDisposed()) return;
int texMax = PrismSettings.primTextureSize;
if (texMax < 0) texMax = getResourceFactory().getMaximumTextureSize();
int texDim = 3;
int nextCellSize = 2;
while (texDim + nextCellSize + 1 <= texMax) {
rectTexMax = nextCellSize;
texDim += ++nextCellSize;
}
byte mask[] = new byte[texDim * texDim];
int cellY = 1;
for (int cellH = 1; cellH <= rectTexMax; cellH++) {
int cellX = 1;
for (int cellW = 1; cellW <= rectTexMax; cellW++) {
int index = cellY * texDim + cellX;
for (int y = 0; y < cellH; y++) {
for (int x = 0; x < cellW; x++) {
mask[index + x] = (byte) 0xff;
}
index += texDim;
}
cellX += cellW + 1;
}
cellY += cellH + 1;
}
if (PrismSettings.verbose) {
System.out.println("max rectangle texture cell size = "+rectTexMax);
}
Texture tex =
getResourceFactory().createMaskTexture(texDim, texDim,
WrapMode.CLAMP_NOT_NEEDED);
// rectTex remains permanently locked, useful, and permanent
// an additional lock is added when a caller calls getWrapGreientTeture for
// them to unlock
tex.contentsUseful();
tex.makePermanent();
PixelFormat pf = tex.getPixelFormat();
int scan = texDim * pf.getBytesPerPixelUnit();
tex.update(ByteBuffer.wrap(mask), pf,
0, 0, 0, 0, texDim, texDim,
scan, false);
rectTex = tex;
}
public Texture getWrapRectTexture() {
if (checkDisposed()) return null;
if (wrapRectTex == null) {
Texture tex =
getResourceFactory().createMaskTexture(2, 2, WrapMode.CLAMP_TO_EDGE);
// wrapRectTex remains permanently locked, useful, and permanent
// an additional lock is added when a caller calls getWrapGreientTeture for
// them to unlock
tex.contentsUseful();
tex.makePermanent();
int w = tex.getPhysicalWidth();
int h = tex.getPhysicalHeight();
if (PrismSettings.verbose) {
System.out.println("wrap rectangle texture = "+w+" x "+h);
}
// assert w == 2 && h == 2?
byte mask[] = new byte[w * h];
int off = w;
for (int y = 1; y < h; y++) {
for (int x = 1; x < h; x++) {
mask[off + x] = (byte) 0xff;
}
off += w;
}
PixelFormat pf = tex.getPixelFormat();
int scan = w * pf.getBytesPerPixelUnit();
tex.update(ByteBuffer.wrap(mask), pf,
0, 0, 0, 0, w, h,
scan, false);
wrapRectTex = tex;
}
// wrapRectTex is left permanent and locked so it never
// goes away or needs to be checked for isSurfaceLost(), but we
// add a lock here so that the caller can unlock without knowing
// our inner implementation details
wrapRectTex.lock();
return wrapRectTex;
}
public Texture getOvalTexture() {
if (checkDisposed()) return null;
if (ovalTex == null) {
int cellMax = getRectTextureMaxSize();
int texDim = (cellMax * (cellMax + 1)) / 2;
// size now points at the start of the max-sized cell
texDim += cellMax + 1;
// size now points just past the empty row on the far side of the
// max-sized cell - which is the dimension we want the texture...
byte mask[] = new byte[texDim * texDim];
int cellY = 1;
for (int cellH = 1; cellH <= cellMax; cellH++) {
int cellX = 1;
for (int cellW = 1; cellW <= cellMax; cellW++) {
int index = cellY * texDim + cellX;
// System.out.println("rasterizing "+cell_w+" x "+cell_h);
for (int y = 0; y < cellH; y++) {
if (y * 2 >= cellH) {
int reflecty = cellH - 1 - y;
// handle bottom half of ellipse via reflection
int rindex = index + (reflecty - y) * texDim;
for (int x = 0; x < cellW; x++) {
mask[index + x] = mask[rindex + x];
}
} else {
// Use 8 sub-row samples
float ovalY = y + 0.0625f; // 1/16
for (int i = 0; i < 8; i++) {
float ovalX = (ovalY / cellH) - 0.5f;
ovalX = (float) Math.sqrt(0.25f - ovalX * ovalX);
int oxi = Math.round(cellW * 4.0f * (1.0f - ovalX * 2.0f));
int edgeX = oxi >> 3;
int subX = oxi & 0x7;
// System.out.println("y = "+oy+", mask["+rx+"] += "+(8-subx)+", mask["+(rx+1)+"] += "+subx);
mask[index + edgeX] += 8 - subX;
mask[index + edgeX + 1] += subX;
ovalY += 0.125f; // 1/8
}
int accum = 0;
for (int x = 0; x < cellW; x++) {
if (x * 2 >= cellW) {
// handle right half of ellipse via reflection
mask[index + x] = mask[index + cellW - 1 - x];
} else {
accum += mask[index + x];
// System.out.println("accum["+rx+"] = "+accum);
mask[index + x] = (byte) ((accum * 255 + 32) / 64);
}
}
// Sometimes for smaller ovals we leave some
// accumulation dirt just past the last cell
mask[index + cellW] = 0;
}
index += texDim;
}
cellX += cellW + 1;
}
cellY += cellH + 1;
}
if (false) {
int index = 0;
for (int y = 0; y < texDim; y++) {
for (int x = 0; x < texDim; x++) {
String s = Integer.toHexString((mask[index++] & 0xff) | 0x100);
System.out.print(s.substring(1)+" ");
}
System.out.println();
}
}
Texture tex =
getResourceFactory().createMaskTexture(texDim, texDim,
WrapMode.CLAMP_NOT_NEEDED);
tex.contentsUseful();
tex.makePermanent();
PixelFormat pf = tex.getPixelFormat();
int scan = texDim * pf.getBytesPerPixelUnit();
tex.update(ByteBuffer.wrap(mask), pf,
0, 0, 0, 0, texDim, texDim,
scan, false);
ovalTex = tex;
}
// ovalTex is left permanent and locked so it never
// goes away or needs to be checked for isSurfaceLost(), but we
// add a lock here so that the caller can unlock without knowing
// our inner implementation details
ovalTex.lock();
return ovalTex;
}
public Texture getGradientTexture(Gradient grad, BaseTransform xform,
int paintW, int paintH,
MaskData maskData,
float bx, float by, float bw, float bh)
{
if (checkDisposed()) return null;
int sizeInPixels = paintW * paintH;
int sizeInBytes = sizeInPixels * 4;
if (paintBuffer == null || paintBuffer.capacity() < sizeInBytes) {
paintPixels = new int[sizeInPixels];
paintBuffer = ByteBuffer.wrap(new byte[sizeInBytes]);
}
if (paintTex != null) {
paintTex.lock();
if (paintTex.isSurfaceLost()) {
paintTex = null;
}
}
if (paintTex == null ||
paintTex.getContentWidth() < paintW ||
paintTex.getContentHeight() < paintH)
{
int newTexW = paintW;
int newTexH = paintH;
if (paintTex != null) {
// grow the paint texture so that the new one is always
// at least as large as the previous one; this avoids
// lots of creation/disposal when the shapes alternate
// between narrow/tall and wide/short
newTexW = Math.max(paintW, paintTex.getContentWidth());
newTexH = Math.max(paintH, paintTex.getContentHeight());
paintTex.dispose();
}
paintTex = getResourceFactory().
createTexture(PixelFormat.BYTE_BGRA_PRE,
Texture.Usage.DEFAULT,
Texture.WrapMode.CLAMP_NOT_NEEDED,
newTexW, newTexH);
}
// note that the gradient will be tightly packed into paintImg
// (i.e., no space at the end of each logical row) since there
// is no way to control scanline stride for texture uploads in ES1
PaintUtil.fillImageWithGradient(paintPixels, grad, xform,
0, 0, paintW, paintH,
bx, by, bw, bh);
// RT-27421
// TODO: could save some work here if we converted the *GradientContext
// classes to produce ByteRgbaPre data instead of IntArgbPre data...
byte[] bytePixels = paintBuffer.array();
if (maskData != null) {
// modulate with the mask pixels while we convert from
// IntArgbPre to ByteRgbaPre
byte[] maskPixels = maskData.getMaskBuffer().array();
int j = 0;
for (int i = 0; i < sizeInPixels; i++) {
int pixel = paintPixels[i];
int maskA = maskPixels[i] & 0xff;
bytePixels[j++] = (byte)((((pixel ) & 0xff) * maskA) / 255);
bytePixels[j++] = (byte)((((pixel >> 8) & 0xff) * maskA) / 255);
bytePixels[j++] = (byte)((((pixel >> 16) & 0xff) * maskA) / 255);
bytePixels[j++] = (byte)((((pixel >>> 24) ) * maskA) / 255);
}
} else {
// just convert from IntArgbPre to ByteRgbaPre
int j = 0;
for (int i = 0; i < sizeInPixels; i++) {
int pixel = paintPixels[i];
bytePixels[j++] = (byte)((pixel ) & 0xff);
bytePixels[j++] = (byte)((pixel >> 8) & 0xff);
bytePixels[j++] = (byte)((pixel >> 16) & 0xff);
bytePixels[j++] = (byte)((pixel >>> 24) );
}
}
paintTex.update(paintBuffer, PixelFormat.BYTE_BGRA_PRE,
0, 0, 0, 0, paintW, paintH, paintW*4, false);
return paintTex;
}
/**
* Dispose of this context. Subclass implementations can override this
* if needed. They must call super.dispose().
*/
public void dispose() {
clearGlyphCaches();
GlyphCache.disposeForContext(this);
if (maskTex != null) {
maskTex.dispose();
maskTex = null;
}
if (paintTex != null) {
paintTex.dispose();
paintTex = null;
}
if (rectTex != null) {
rectTex.dispose();
rectTex = null;
}
if (wrapRectTex != null) {
wrapRectTex.dispose();
wrapRectTex = null;
}
if (ovalTex != null) {
ovalTex.dispose();
ovalTex = null;
}
disposed = true;
}
/**
* Returns a flag indicating whether this context has been disposed. A graphics
* context is disposed by the associated ResourceFactory when it is disposed.
* If a context has been disposed, it must be recreated, by a new ResourceFactory.
* All draw calls will be ignored. An attempt to create a resource will be
* ignored and will return null.
*
* @return true if this context has been disposed.
*/
public final boolean isDisposed() {
return disposed;
}
protected boolean checkDisposed() {
if (PrismSettings.verbose && isDisposed()) {
try {
throw new IllegalStateException("attempt to use resource after context is disposed");
} catch (RuntimeException ex) {
ex.printStackTrace();
}
}
return isDisposed();
}
}
