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src/java.desktop/macosx/native/libawt_lwawt/font/CGGlyphImages.m
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@@ -193,23 +193,44 @@
#endif
#pragma mark --- Font Rendering Mode Descriptors ---
+static Int32 reverseGamma = 0;
+
+static UInt8 reverseGammaLut[256] = { 0 };
+
+static inline UInt8* getReverseGammaLut() {
+ if (reverseGamma == 0) {
+ // initialize gamma lut
+ double gamma;
+ const char* pGammaEnv = getenv("J2D_LCD_REVERSE_GAMMA");
+ if (pGammaEnv != NULL) {
+ reverseGamma = atol(pGammaEnv);
+ }
+
+ if (reverseGamma < 100 || reverseGamma > 250) {
+ reverseGamma = 179;
+ }
+
+ gamma = 100.0 / reverseGamma;
+ for (int i = 0; i < 256; i++) {
+ double x = ((double)i) / 255.0;
+ reverseGammaLut[i] = (UInt8)(255 * pow(x, gamma));
+ }
+ }
+ return reverseGammaLut;
+}
static inline void
CGGI_CopyARGBPixelToRGBPixel(const UInt32 p, UInt8 *dst)
{
-#if __LITTLE_ENDIAN__
- *(dst + 2) = 0xFF - (p >> 24 & 0xFF);
- *(dst + 1) = 0xFF - (p >> 16 & 0xFF);
- *(dst) = 0xFF - (p >> 8 & 0xFF);
-#else
- *(dst) = 0xFF - (p >> 16 & 0xFF);
- *(dst + 1) = 0xFF - (p >> 8 & 0xFF);
- *(dst + 2) = 0xFF - (p & 0xFF);
-#endif
+ UInt8* lut = getReverseGammaLut();
+
+ *(dst + 0) = lut[0xFF - (p >> 16 & 0xFF)]; // red
+ *(dst + 1) = lut[0xFF - (p >> 8 & 0xFF)]; // green
+ *(dst + 2) = lut[0xFF - (p & 0xFF)]; // blue
}
static void
CGGI_CopyImageFromCanvasToRGBInfo(CGGI_GlyphCanvas *canvas, GlyphInfo *info)
{
@@ -220,21 +241,18 @@
size_t destRowWidth = info->width;
size_t height = info->height;
size_t y;
+
+ // fill empty glyph image with black-on-white glyph
for (y = 0; y < height; y++) {
size_t destRow = y * destRowWidth * 3;
size_t srcRow = y * srcRowWidth;
size_t x;
for (x = 0; x < destRowWidth; x++) {
- // size_t x3 = x * 3;
- // UInt32 p = src[srcRow + x];
- // dest[destRow + x3] = 0xFF - (p >> 16 & 0xFF);
- // dest[destRow + x3 + 1] = 0xFF - (p >> 8 & 0xFF);
- // dest[destRow + x3 + 2] = 0xFF - (p & 0xFF);
CGGI_CopyARGBPixelToRGBPixel(src[srcRow + x],
dest + destRow + x * 3);
}
}
}
@@ -258,17 +276,13 @@
// vImageConvert_ARGB8888toPlanar8(canvas->image, &infoBuffer,
// &scrapBuffer, &scrapBuffer, &scrapBuffer, kvImageNoFlags);
//}
static inline UInt8
-CGGI_ConvertPixelToGreyBit(UInt32 p)
+CGGI_ConvertBWPixelToByteGray(UInt32 p)
{
-#ifdef __LITTLE_ENDIAN__
- return 0xFF - ((p >> 24 & 0xFF) + (p >> 16 & 0xFF) + (p >> 8 & 0xFF)) / 3;
-#else
- return 0xFF - ((p >> 16 & 0xFF) + (p >> 8 & 0xFF) + (p & 0xFF)) / 3;
-#endif
+ return 0xFF - (((p >> 24 & 0xFF) + (p >> 16 & 0xFF) + (p >> 8 & 0xFF)) / 3);
}
static void
CGGI_CopyImageFromCanvasToAlphaInfo(CGGI_GlyphCanvas *canvas, GlyphInfo *info)
{
@@ -279,18 +293,19 @@
size_t destRowWidth = info->width;
size_t height = info->height;
size_t y;
+
+ // fill empty glyph image with black-on-white glyph
for (y = 0; y < height; y++) {
size_t destRow = y * destRowWidth;
size_t srcRow = y * srcRowWidth;
-
size_t x;
for (x = 0; x < destRowWidth; x++) {
UInt32 p = src[srcRow + x];
- dest[destRow + x] = CGGI_ConvertPixelToGreyBit(p);
+ dest[destRow + x] = CGGI_ConvertBWPixelToByteGray(p);
}
}
}
@@ -314,25 +329,34 @@
static inline CGGI_RenderingMode
CGGI_GetRenderingMode(const AWTStrike *strike)
{
CGGI_RenderingMode mode;
mode.cgFontMode = strike->fStyle;
+ NSException *e = nil;
switch (strike->fAAStyle) {
- case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_DEFAULT:
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_OFF:
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_ON:
- case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_GASP:
- default:
mode.glyphDescriptor = &grey;
break;
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_LCD_HRGB:
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_LCD_HBGR:
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_LCD_VRGB:
case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_LCD_VBGR:
mode.glyphDescriptor = &rgb;
break;
+ case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_GASP:
+ case sun_awt_SunHints_INTVAL_TEXT_ANTIALIAS_DEFAULT:
+ default:
+ /* we expect that text antialiasing hint has been already
+ * evaluated. Report an error if we get 'unevaluated' hint here.
+ */
+ e = [NSException
+ exceptionWithName:@"IllegalArgumentException"
+ reason:@"Invalid hint value"
+ userInfo:nil];
+ @throw e;
}
return mode;
}
@@ -343,34 +367,42 @@
* Creates a new canvas of a fixed size, and initializes the CGContext as
* an 32-bit ARGB BitmapContext with some generic RGB color space.
*/
static inline void
CGGI_InitCanvas(CGGI_GlyphCanvas *canvas,
- const vImagePixelCount width, const vImagePixelCount height)
+ const vImagePixelCount width, const vImagePixelCount height,
+ const CGGI_RenderingMode* mode)
{
// our canvas is *always* 4-byte ARGB
size_t bytesPerRow = width * sizeof(UInt32);
size_t byteCount = bytesPerRow * height;
canvas->image = malloc(sizeof(vImage_Buffer));
canvas->image->width = width;
canvas->image->height = height;
canvas->image->rowBytes = bytesPerRow;
- canvas->image->data = (void *)calloc(byteCount, sizeof(UInt32));
+ canvas->image->data = (void *)calloc(byteCount, sizeof(UInt8));
if (canvas->image->data == NULL) {
[[NSException exceptionWithName:NSMallocException
reason:@"Failed to allocate memory for the buffer which backs the CGContext for glyph strikes." userInfo:nil] raise];
}
- CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
+ uint32_t bmpInfo = kCGImageAlphaPremultipliedFirst;
+ if (mode->glyphDescriptor == &rgb) {
+ bmpInfo |= kCGBitmapByteOrder32Host;
+ }
+
+ CGColorSpaceRef colorSpace = CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
canvas->context = CGBitmapContextCreate(canvas->image->data,
width, height, 8, bytesPerRow,
colorSpace,
- kCGImageAlphaPremultipliedFirst);
+ bmpInfo);
+ // set foreground color
CGContextSetRGBFillColor(canvas->context, 0.0f, 0.0f, 0.0f, 1.0f);
+
CGContextSetFontSize(canvas->context, 1);
CGContextSaveGState(canvas->context);
CGColorSpaceRelease(colorSpace);
}
@@ -402,11 +434,13 @@
/*
* Quick and easy inline to check if this canvas is big enough.
*/
static inline void
-CGGI_SizeCanvas(CGGI_GlyphCanvas *canvas, const vImagePixelCount width, const vImagePixelCount height, const JRSFontRenderingStyle style)
+CGGI_SizeCanvas(CGGI_GlyphCanvas *canvas, const vImagePixelCount width,
+ const vImagePixelCount height,
+ const CGGI_RenderingMode* mode)
{
if (canvas->image != NULL &&
width < canvas->image->width &&
height < canvas->image->height)
{
@@ -416,12 +450,13 @@
// if we don't have enough space to strike the largest glyph in the
// run, resize the canvas
CGGI_FreeCanvas(canvas);
CGGI_InitCanvas(canvas,
width * CGGI_GLYPH_CANVAS_SLACK,
- height * CGGI_GLYPH_CANVAS_SLACK);
- JRSFontSetRenderingStyleOnContext(canvas->context, style);
+ height * CGGI_GLYPH_CANVAS_SLACK,
+ mode);
+ JRSFontSetRenderingStyleOnContext(canvas->context, mode->cgFontMode);
}
/*
* Clear the canvas by blitting white only into the region of interest
* (the rect which we will copy out of once the glyph is struck).
@@ -441,10 +476,11 @@
Pixel_8888 opaqueWhite = { 0xE0, 0xE0, 0xE0, 0xE0 };
#else
Pixel_8888 opaqueWhite = { 0xFF, 0xFF, 0xFF, 0xFF };
#endif
+ // clear canvas background and set foreground color
vImageBufferFill_ARGB8888(&canvasRectToClear, opaqueWhite, kvImageNoFlags);
}
#pragma mark --- GlyphInfo Creation & Copy Functions ---
@@ -575,11 +611,11 @@
// create the Sun2D GlyphInfo we are going to strike into
GlyphInfo *info = CGGI_CreateNewGlyphInfoFrom(advance, bbox, strike, mode);
// fix the context size, just in case the substituted character is unexpectedly large
- CGGI_SizeCanvas(canvas, info->width, info->height, mode->cgFontMode);
+ CGGI_SizeCanvas(canvas, info->width, info->height, mode);
// align the transform for the real CoreText strike
CGContextSetTextMatrix(canvas->context, strike->fAltTx);
const CGFontRef cgFallback = CTFontCopyGraphicsFont(fallback, NULL);
@@ -651,12 +687,15 @@
DUMP_IMG_PIXELS("CGGI Canvas", canvas->image);
PRINT_CGSTATES_INFO(canvas->context);
#endif
}
-static NSString *threadLocalCanvasKey =
- @"Java CoreGraphics Text Renderer Cached Canvas";
+static NSString *threadLocalAACanvasKey =
+ @"Java CoreGraphics Text Renderer Cached Canvas for AA";
+
+static NSString *threadLocalLCDCanvasKey =
+ @"Java CoreGraphics Text Renderer Cached Canvas for LCD";
/*
* This is the maximum length and height times the above slack squared
* to determine if we go with the global canvas, or malloc one on the spot.
*/
@@ -676,29 +715,32 @@
{
if (maxWidth*maxHeight*CGGI_GLYPH_CANVAS_SLACK*CGGI_GLYPH_CANVAS_SLACK >
CGGI_GLYPH_CANVAS_MAX*CGGI_GLYPH_CANVAS_MAX*CGGI_GLYPH_CANVAS_SLACK*CGGI_GLYPH_CANVAS_SLACK)
{
CGGI_GlyphCanvas *tmpCanvas = [[CGGI_GlyphCanvas alloc] init];
- CGGI_InitCanvas(tmpCanvas, maxWidth, maxHeight);
+ CGGI_InitCanvas(tmpCanvas, maxWidth, maxHeight, mode);
CGGI_FillImagesForGlyphsWithSizedCanvas(tmpCanvas, strike,
mode, glyphInfos, uniChars,
glyphs, len);
CGGI_FreeCanvas(tmpCanvas);
[tmpCanvas release];
return;
}
-
NSMutableDictionary *threadDict =
[[NSThread currentThread] threadDictionary];
- CGGI_GlyphCanvas *canvas = [threadDict objectForKey:threadLocalCanvasKey];
+
+ NSString* theKey = (mode->glyphDescriptor == &rgb) ?
+ threadLocalLCDCanvasKey : threadLocalAACanvasKey;
+
+ CGGI_GlyphCanvas *canvas = [threadDict objectForKey:theKey];
if (canvas == nil) {
canvas = [[CGGI_GlyphCanvas alloc] init];
- [threadDict setObject:canvas forKey:threadLocalCanvasKey];
+ [threadDict setObject:canvas forKey:theKey];
}
- CGGI_SizeCanvas(canvas, maxWidth, maxHeight, mode->cgFontMode);
+ CGGI_SizeCanvas(canvas, maxWidth, maxHeight, mode);
CGGI_FillImagesForGlyphsWithSizedCanvas(canvas, strike, mode,
glyphInfos, uniChars, glyphs, len);
}
/*
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