void draw(SkCanvas* canvas) {
SkBitmap bitmap;
bitmap.setInfo(SkImageInfo::MakeN32(16, 32, kPremul_SkAlphaType,
SkColorSpace::MakeSRGBLinear()));
SkColorSpace* colorSpace = bitmap.colorSpace();
SkDebugf("gammaCloseToSRGB: %s gammaIsLinear: %s isSRGB: %s\n",
colorSpace->gammaCloseToSRGB() ? "true" : "false",
colorSpace->gammaIsLinear() ? "true" : "false",
colorSpace->isSRGB() ? "true" : "false");
}
SkImageCacherator::CachedFormat SkImage_Lazy::chooseCacheFormat(SkColorSpace* dstColorSpace,
const GrCaps* grCaps) const {
SkColorSpace* cs = fInfo.colorSpace();
if (!cs || !dstColorSpace) {
return kLegacy_CachedFormat;
}
CacheCaps caps(grCaps);
switch (fInfo.colorType()) {
case kUnknown_SkColorType:
case kAlpha_8_SkColorType:
case kRGB_565_SkColorType:
case kARGB_4444_SkColorType:
case kRGB_888x_SkColorType:
case kRGBA_1010102_SkColorType:
case kRGB_101010x_SkColorType:
// We don't support color space on these formats, so always decode in legacy mode:
// TODO: Ask the codec to decode these to something else (at least sRGB 8888)?
return kLegacy_CachedFormat;
case kGray_8_SkColorType:
// TODO: What do we do with grayscale sources that have strange color spaces attached?
// The codecs and color space xform don't handle this correctly (yet), so drop it on
// the floor. (Also, inflating by a factor of 8 is going to be unfortunate).
// As it is, we don't directly support sRGB grayscale, so ask the codec to convert
// it for us. This bypasses some really sketchy code GrUploadPixmapToTexture.
if (cs->gammaCloseToSRGB() && caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
case kRGBA_8888_SkColorType:
if (cs->gammaCloseToSRGB()) {
if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
} else {
if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
}
case kBGRA_8888_SkColorType:
// Odd case. sBGRA isn't a real thing, so we may not have this texturable.
if (caps.supportsSBGR()) {
if (cs->gammaCloseToSRGB()) {
return kSBGR8888_CachedFormat;
} else if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else {
// sBGRA support without sRGBA is highly unlikely (impossible?) Nevertheless.
return kLegacy_CachedFormat;
}
} else {
if (cs->gammaCloseToSRGB()) {
if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
} else {
if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
}
}
case kRGBA_F16_SkColorType:
if (caps.supportsHalfFloat()) {
return kLinearF16_CachedFormat;
} else if (caps.supportsSRGB()) {
return kSRGB8888_CachedFormat;
} else {
return kLegacy_CachedFormat;
}
}
SkDEBUGFAIL("Unreachable");
return kLegacy_CachedFormat;
}