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writePixels should notify GPU that pixels have changed

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R=reed@google.com,robertphillips@google.com
Bug: skia:7644
Change-Id: I469c537a649e4d8d05a78cedb26caa3057d824c1
Reviewed-on: https://skia-review.googlesource.com/108961
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Cary Clark <caryclark@google.com>
This commit is contained in:
Cary Clark 2018-02-21 08:14:26 -05:00 committed by Skia Commit-Bot
parent aefcccb5d8
commit bd8b25a7b4
2 changed files with 26 additions and 0 deletions
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25
gm/copyTo4444.cpp
View File

@ -54,3 +54,28 @@ static GM* MyFactory(void*) { return new CopyTo4444GM; }
static GMRegistry reg(MyFactory);
}
DEF_SIMPLE_GM(format4444, canvas, 64, 64) {
canvas->scale(16, 16);
SkBitmap bitmap;
SkImageInfo imageInfo = SkImageInfo::Make(1, 1, kARGB_4444_SkColorType, kPremul_SkAlphaType);
bitmap.allocPixels(imageInfo);
SkCanvas offscreen(bitmap);
offscreen.clear(SK_ColorRED);
canvas->drawBitmap(bitmap, 0, 0);
offscreen.clear(SK_ColorBLUE);
canvas->drawBitmap(bitmap, 1, 1);
auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t {
return (a << 0) | (b << 4) | (g << 8) | (r << 12);
};
uint16_t red4444 = pack4444(0xF, 0xF, 0x0, 0x0);
uint16_t blue4444 = pack4444(0xF, 0x0, 0x0, 0x0F);
SkPixmap redPixmap(imageInfo, &red4444, 2);
if (bitmap.writePixels(redPixmap, 0, 0)) {
canvas->drawBitmap(bitmap, 2, 2);
}
SkPixmap bluePixmap(imageInfo, &blue4444, 2);
if (bitmap.writePixels(bluePixmap, 0, 0)) {
canvas->drawBitmap(bitmap, 3, 3);
}
}

1
src/core/SkBitmap.cpp
View File

@ -500,6 +500,7 @@ bool SkBitmap::writePixels(const SkPixmap& src, int dstX, int dstY,
const SkImageInfo dstInfo = this->info().makeWH(rec.fInfo.width(), rec.fInfo.height());
SkConvertPixels(dstInfo, dstPixels, this->rowBytes(), rec.fInfo, rec.fPixels, rec.fRowBytes,
nullptr, behavior);
this->notifyPixelsChanged();
return true;
}