AuroraMiddleware/skia2
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When guessing at the dest, use linear space instead of color space.

Browse Source 
http://codereview.appspot.com/5732044/
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M    src/ports/SkFontHost_FreeType.cpp


git-svn-id: http://skia.googlecode.com/svn/trunk@3313 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
bungeman@google.com 2012-03-05 15:07:25 +00:00
parent c2099d2707
commit d0b6a2dd82
1 changed files with 8 additions and 6 deletions
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14
src/ports/SkFontHost_FreeType.cpp
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@ -1068,7 +1068,7 @@ static void build_power_table(uint8_t table[], float ee) {
}
}
static void build_gamma_table(uint8_t table[256], int src, int dst) {
static void build_gamma_table(uint8_t table[256], int src) {
static bool gInit;
static uint8_t powTable[256], invPowTable[256];
if (!gInit) {
@ -1079,7 +1079,9 @@ static void build_gamma_table(uint8_t table[256], int src, int dst) {
}
const int linSrc = powTable[src];
const int linDst = powTable[dst];
const int linDst = 255 - linSrc;
const int dst = invPowTable[linDst];
// have our contrast value taper off to 0 as the src luminance becomes white
const int contrast = SK_GAMMA_CONTRAST * (255 - linSrc) / 255;
@ -1105,10 +1107,10 @@ static const uint8_t* getGammaTable(U8CPU luminance) {
static uint8_t gGammaTables[4][256];
static bool gInited;
if (!gInited) {
build_gamma_table(gGammaTables[0], 0x00, 0xFF);
build_gamma_table(gGammaTables[1], 0x66, 0x99);
build_gamma_table(gGammaTables[2], 0x99, 0x66);
build_gamma_table(gGammaTables[3], 0xFF, 0x00);
build_gamma_table(gGammaTables[0], 0x00);
build_gamma_table(gGammaTables[1], 0x55);
build_gamma_table(gGammaTables[2], 0xAA);
build_gamma_table(gGammaTables[3], 0xFF);
gInited = true;
}