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submit LCD alpha support

Browse Source 
http://codereview.appspot.com/4851042/

M    src/core/SkBlitter_ARGB32.cpp



git-svn-id: http://skia.googlecode.com/svn/trunk@2047 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
caryclark@google.com 2011-08-05 14:17:12 +00:00
parent a5a1da81d0
commit 53d11e0655
1 changed files with 31 additions and 17 deletions
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48
src/core/SkBlitter_ARGB32.cpp
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@ -28,10 +28,13 @@ static inline int blend32(int src, int dst, int scale) {
}
static void blit_lcd16_opaque(SkPMColor dst[], const uint16_t src[],
SkPMColor color, int width) {
int srcR = SkGetPackedR32(color);
int srcG = SkGetPackedG32(color);
int srcB = SkGetPackedB32(color);
SkColor color, int width) {
int srcA = SkColorGetA(color);
int srcR = SkColorGetR(color);
int srcG = SkColorGetG(color);
int srcB = SkColorGetB(color);
srcA = SkAlpha255To256(srcA);
for (int i = 0; i < width; i++) {
uint16_t mask = src[i];
@ -48,11 +51,15 @@ static void blit_lcd16_opaque(SkPMColor dst[], const uint16_t src[],
int maskG = SkGetPackedG16(mask) >> (SK_G16_BITS - 5);
int maskB = SkGetPackedB16(mask) >> (SK_B16_BITS - 5);
// Now upscale them to 0..256, so we can use SkAlphaBlend
// Now upscale them to 0..32, so we can use blend32
maskR = upscale31To32(maskR);
maskG = upscale31To32(maskG);
maskB = upscale31To32(maskB);
maskR = maskR * srcA >> 8;
maskG = maskG * srcA >> 8;
maskB = maskB * srcA >> 8;
int maskA = SkMax32(SkMax32(maskR, maskG), maskB);
int dstA = SkGetPackedA32(d);
@ -68,10 +75,13 @@ static void blit_lcd16_opaque(SkPMColor dst[], const uint16_t src[],
}
static void blit_lcd32_opaque(SkPMColor dst[], const uint32_t src[],
SkPMColor color, int width) {
int srcR = SkGetPackedR32(color);
int srcG = SkGetPackedG32(color);
int srcB = SkGetPackedB32(color);
SkColor color, int width) {
int srcA = SkColorGetA(color);
int srcR = SkColorGetR(color);
int srcG = SkColorGetG(color);
int srcB = SkColorGetB(color);
srcA = SkAlpha255To256(srcA);
for (int i = 0; i < width; i++) {
uint32_t mask = src[i];
@ -90,6 +100,10 @@ static void blit_lcd32_opaque(SkPMColor dst[], const uint32_t src[],
maskG = SkAlpha255To256(maskG);
maskB = SkAlpha255To256(maskB);
maskR = maskR * srcA >> 8;
maskG = maskG * srcA >> 8;
maskB = maskB * srcA >> 8;
int maskA = SkMax32(SkMax32(maskR, maskG), maskB);
int dstA = SkGetPackedA32(d);
@ -105,7 +119,7 @@ static void blit_lcd32_opaque(SkPMColor dst[], const uint32_t src[],
}
static void blitmask_lcd16(const SkBitmap& device, const SkMask& mask,
const SkIRect& clip, SkPMColor srcColor) {
const SkIRect& clip, SkColor srcColor) {
int x = clip.fLeft;
int y = clip.fTop;
int width = clip.width();
@ -122,7 +136,7 @@ static void blitmask_lcd16(const SkBitmap& device, const SkMask& mask,
}
static void blitmask_lcd32(const SkBitmap& device, const SkMask& mask,
const SkIRect& clip, SkPMColor srcColor) {
const SkIRect& clip, SkColor srcColor) {
int x = clip.fLeft;
int y = clip.fTop;
int width = clip.width();
@ -290,10 +304,10 @@ void SkARGB32_Blitter::blitMask(const SkMask& mask, const SkIRect& clip) {
SkARGB32_Blit32(fDevice, mask, clip, fPMColor);
return;
} else if (SkMask::kLCD16_Format == mask.fFormat) {
blitmask_lcd16(fDevice, mask, clip, fPMColor);
blitmask_lcd16(fDevice, mask, clip, fColor);
return;
} else if (SkMask::kLCD32_Format == mask.fFormat) {
blitmask_lcd32(fDevice, mask, clip, fPMColor);
blitmask_lcd32(fDevice, mask, clip, fColor);
return;
}
@ -317,10 +331,10 @@ void SkARGB32_Opaque_Blitter::blitMask(const SkMask& mask,
SkARGB32_Blit32(fDevice, mask, clip, fPMColor);
return;
} else if (SkMask::kLCD16_Format == mask.fFormat) {
blitmask_lcd16(fDevice, mask, clip, fPMColor);
blitmask_lcd16(fDevice, mask, clip, fColor);
return;
} else if (SkMask::kLCD32_Format == mask.fFormat) {
blitmask_lcd32(fDevice, mask, clip, fPMColor);
blitmask_lcd32(fDevice, mask, clip, fColor);
return;
}
@ -396,9 +410,9 @@ void SkARGB32_Black_Blitter::blitMask(const SkMask& mask, const SkIRect& clip) {
} else if (SkMask::kARGB32_Format == mask.fFormat) {
SkARGB32_Blit32(fDevice, mask, clip, fPMColor);
} else if (SkMask::kLCD16_Format == mask.fFormat) {
blitmask_lcd16(fDevice, mask, clip, fPMColor);
blitmask_lcd16(fDevice, mask, clip, fColor);
} else if (SkMask::kLCD32_Format == mask.fFormat) {
blitmask_lcd32(fDevice, mask, clip, fPMColor);
blitmask_lcd32(fDevice, mask, clip, fColor);
} else {
fBlitMaskProc(fDevice.getAddr32(clip.fLeft, clip.fTop),
fDevice.rowBytes(),