void GrDistanceFieldTextContext::setupCoverageEffect(const SkColor& filteredColor) {
GrTextureParams params(SkShader::kRepeat_TileMode, GrTextureParams::kBilerp_FilterMode);
GrTextureParams gammaParams(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode);
uint32_t textureUniqueID = fCurrTexture->getUniqueID();
const SkMatrix& ctm = fContext->getMatrix();
// set up any flags
uint32_t flags = 0;
flags |= ctm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0;
flags |= fUseLCDText ? kUseLCD_DistanceFieldEffectFlag : 0;
flags |= fUseLCDText && ctm.rectStaysRect() ?
kRectToRect_DistanceFieldEffectFlag : 0;
bool useBGR = SkPixelGeometryIsBGR(fDeviceProperties.pixelGeometry());
flags |= fUseLCDText && useBGR ? kBGR_DistanceFieldEffectFlag : 0;
// see if we need to create a new effect
if (textureUniqueID != fEffectTextureUniqueID ||
filteredColor != fEffectColor ||
flags != fEffectFlags) {
if (fUseLCDText) {
GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor);
fCachedGeometryProcessor.reset(GrDistanceFieldLCDTextureEffect::Create(fCurrTexture,
params,
fGammaTexture,
gammaParams,
colorNoPreMul,
flags));
} else {
#ifdef SK_GAMMA_APPLY_TO_A8
U8CPU lum = SkColorSpaceLuminance::computeLuminance(fDeviceProperties.gamma(),
filteredColor);
fCachedGeometryProcessor.reset(GrDistanceFieldTextureEffect::Create(fCurrTexture,
params,
fGammaTexture,
gammaParams,
lum/255.f,
flags));
#else
fCachedGeometryProcessor.reset(GrDistanceFieldNoGammaTextureEffect::Create(fCurrTexture,
params, flags));
#endif
}
fEffectTextureUniqueID = textureUniqueID;
fEffectColor = filteredColor;
fEffectFlags = flags;
}
}
void GrDistanceFieldTextContext::setupCoverageEffect(const SkColor& filteredColor) {
GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
GrTextureParams gammaParams(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode);
uint32_t textureUniqueID = fCurrTexture->getUniqueID();
const SkMatrix& ctm = fViewMatrix;
// set up any flags
uint32_t flags = 0;
flags |= ctm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0;
flags |= fUseLCDText ? kUseLCD_DistanceFieldEffectFlag : 0;
flags |= fUseLCDText && ctm.rectStaysRect() ?
kRectToRect_DistanceFieldEffectFlag : 0;
bool useBGR = SkPixelGeometryIsBGR(fDeviceProperties.pixelGeometry());
flags |= fUseLCDText && useBGR ? kBGR_DistanceFieldEffectFlag : 0;
// see if we need to create a new effect
if (textureUniqueID != fEffectTextureUniqueID ||
filteredColor != fEffectColor ||
flags != fEffectFlags ||
!fCachedGeometryProcessor->viewMatrix().cheapEqualTo(fViewMatrix)) {
GrColor color = fPaint.getColor();
if (fUseLCDText) {
GrColor colorNoPreMul = skcolor_to_grcolor_nopremultiply(filteredColor);
float redCorrection =
fDistanceAdjustTable[GrColorUnpackR(colorNoPreMul) >> kDistanceAdjustLumShift];
float greenCorrection =
fDistanceAdjustTable[GrColorUnpackG(colorNoPreMul) >> kDistanceAdjustLumShift];
float blueCorrection =
fDistanceAdjustTable[GrColorUnpackB(colorNoPreMul) >> kDistanceAdjustLumShift];
GrDistanceFieldLCDTextGeoProc::DistanceAdjust widthAdjust =
GrDistanceFieldLCDTextGeoProc::DistanceAdjust::Make(redCorrection,
greenCorrection,
blueCorrection);
fCachedGeometryProcessor.reset(GrDistanceFieldLCDTextGeoProc::Create(color,
fViewMatrix,
fCurrTexture,
params,
widthAdjust,
flags));
} else {
