sk_sp<GrTextureProxy> GrTextureProducer::refTextureProxyForParams(
const GrSamplerState& sampler,
SkColorSpace* dstColorSpace,
sk_sp<SkColorSpace>* proxyColorSpace,
SkScalar scaleAdjust[2]) {
// Check that the caller pre-initialized scaleAdjust
SkASSERT(!scaleAdjust || (scaleAdjust[0] == 1 && scaleAdjust[1] == 1));
// Check that if the caller passed nullptr for scaleAdjust that we're in the case where there
// can be no scaling.
SkDEBUGCODE(bool expectNoScale = (sampler.filter() != GrSamplerState::Filter::kMipMap &&
!sampler.isRepeated()));
SkASSERT(scaleAdjust || expectNoScale);
int mipCount = SkMipMap::ComputeLevelCount(this->width(), this->height());
bool willBeMipped = GrSamplerState::Filter::kMipMap == sampler.filter() && mipCount &&
fContext->contextPriv().caps()->mipMapSupport();
auto result =
this->onRefTextureProxyForParams(sampler, dstColorSpace, proxyColorSpace, willBeMipped,
scaleAdjust);
// Check to make sure that if we say the texture willBeMipped that the returned texture has mip
// maps, unless the config is not copyable.
SkASSERT(!result || !willBeMipped || result->mipMapped() == GrMipMapped::kYes ||
!fContext->contextPriv().caps()->isConfigCopyable(result->config()));
// Check that the "no scaling expected" case always returns a proxy of the same size as the
// producer.
SkASSERT(!result || !expectNoScale ||
(result->width() == this->width() && result->height() == this->height()));
return result;
}
std::unique_ptr<GrFragmentProcessor> GrTextureAdjuster::createFragmentProcessor(
const SkMatrix& origTextureMatrix,
const SkRect& constraintRect,
FilterConstraint filterConstraint,
bool coordsLimitedToConstraintRect,
const GrSamplerState::Filter* filterOrNullForBicubic,
SkColorSpace* dstColorSpace) {
SkMatrix textureMatrix = origTextureMatrix;
SkRect domain;
GrSamplerState samplerState;
if (filterOrNullForBicubic) {
samplerState.setFilterMode(*filterOrNullForBicubic);
}
SkScalar scaleAdjust[2] = { 1.0f, 1.0f };
sk_sp<GrTextureProxy> proxy(
this->refTextureProxySafeForParams(samplerState, scaleAdjust));
if (!proxy) {
return nullptr;
}
// If we made a copy then we only copied the contentArea, in which case the new texture is all
// content.
if (proxy.get() != this->originalProxy()) {
textureMatrix.postScale(scaleAdjust[0], scaleAdjust[1]);
}
DomainMode domainMode =
DetermineDomainMode(constraintRect, filterConstraint, coordsLimitedToConstraintRect,
proxy.get(), filterOrNullForBicubic, &domain);
if (kTightCopy_DomainMode == domainMode) {
// TODO: Copy the texture and adjust the texture matrix (both parts need to consider
// non-int constraint rect)
// For now: treat as bilerp and ignore what goes on above level 0.
// We only expect MIP maps to require a tight copy.
SkASSERT(filterOrNullForBicubic &&
GrSamplerState::Filter::kMipMap == *filterOrNullForBicubic);
static const GrSamplerState::Filter kBilerp = GrSamplerState::Filter::kBilerp;
domainMode =
DetermineDomainMode(constraintRect, filterConstraint, coordsLimitedToConstraintRect,
proxy.get(), &kBilerp, &domain);
SkASSERT(kTightCopy_DomainMode != domainMode);
}
SkASSERT(kNoDomain_DomainMode == domainMode ||
(domain.fLeft <= domain.fRight && domain.fTop <= domain.fBottom));
GrPixelConfig config = proxy->config();
auto fp = CreateFragmentProcessorForDomainAndFilter(std::move(proxy), textureMatrix,
domainMode, domain, filterOrNullForBicubic);
return GrColorSpaceXformEffect::Make(std::move(fp), fColorSpace, config, dstColorSpace);
}
bool GrGpu::IsACopyNeededForTextureParams(const GrCaps* caps, GrTextureProxy* texProxy,
int width, int height,
const GrSamplerState& textureParams,
GrTextureProducer::CopyParams* copyParams,
SkScalar scaleAdjust[2]) {
if (texProxy) {
// If the texture format itself doesn't support repeat wrap mode or mipmapping (and
// those capabilities are required) force a copy.
if ((textureParams.isRepeated() && texProxy->texPriv().isClampOnly()) ||
(GrSamplerState::Filter::kMipMap == textureParams.filter() &&
texProxy->texPriv().doesNotSupportMipMaps())) {
copyParams->fFilter = GrSamplerState::Filter::kNearest;
copyParams->fWidth = texProxy->width();
copyParams->fHeight = texProxy->height();
return true;
}
}
if (textureParams.isRepeated() && !caps->npotTextureTileSupport() &&
(!SkIsPow2(width) || !SkIsPow2(height))) {
SkASSERT(scaleAdjust);
copyParams->fWidth = GrNextPow2(width);
copyParams->fHeight = GrNextPow2(height);
SkASSERT(scaleAdjust);
scaleAdjust[0] = ((SkScalar) copyParams->fWidth) / width;
scaleAdjust[1] = ((SkScalar) copyParams->fHeight) / height;
switch (textureParams.filter()) {
case GrSamplerState::Filter::kNearest:
copyParams->fFilter = GrSamplerState::Filter::kNearest;
break;
case GrSamplerState::Filter::kBilerp:
case GrSamplerState::Filter::kMipMap:
// We are only ever scaling up so no reason to ever indicate kMipMap.
copyParams->fFilter = GrSamplerState::Filter::kBilerp;
break;
}
return true;
}
return false;
}
sk_sp<GrTextureProxy> GrTextureAdjuster::refTextureProxySafeForParams(const GrSamplerState& params,
SkScalar scaleAdjust[2]) {
sk_sp<GrTextureProxy> proxy = this->originalProxyRef();
CopyParams copyParams;
if (!fContext) {
// The texture was abandoned.
return nullptr;
}
if (!GrGpu::IsACopyNeededForTextureParams(fContext->caps(),
proxy.get(), proxy->width(), proxy->height(),
params, ©Params, scaleAdjust)) {
return proxy;
}
bool willBeMipped = GrSamplerState::Filter::kMipMap == params.filter();
return this->refTextureProxyCopy(copyParams, willBeMipped);
}
GrVkSampler::Key GrVkSampler::GenerateKey(const GrSamplerState& samplerState,
const GrVkYcbcrConversionInfo& ycbcrInfo) {
const int kTileModeXShift = 2;
const int kTileModeYShift = 4;
SkASSERT(static_cast<int>(samplerState.filter()) <= 3);
uint8_t samplerKey = static_cast<uint16_t>(samplerState.filter());
SkASSERT(static_cast<int>(samplerState.wrapModeX()) <= 3);
samplerKey |= (static_cast<uint8_t>(samplerState.wrapModeX()) << kTileModeXShift);
SkASSERT(static_cast<int>(samplerState.wrapModeY()) <= 3);
samplerKey |= (static_cast<uint8_t>(samplerState.wrapModeY()) << kTileModeYShift);
return {samplerKey, GrVkSamplerYcbcrConversion::GenerateKey(ycbcrInfo)};
}
