SkSurfaceCharacterization GrContextThreadSafeProxy::createCharacterization(
size_t cacheMaxResourceBytes,
const SkImageInfo& ii, const GrBackendFormat& backendFormat,
int sampleCnt, GrSurfaceOrigin origin,
const SkSurfaceProps& surfaceProps,
bool isMipMapped, bool willUseGLFBO0, bool isTextureable) {
if (!backendFormat.isValid()) {
return SkSurfaceCharacterization(); // return an invalid characterization
}
if (GrBackendApi::kOpenGL != backendFormat.backend() && willUseGLFBO0) {
// The willUseGLFBO0 flags can only be used for a GL backend.
return SkSurfaceCharacterization(); // return an invalid characterization
}
if (!this->caps()->mipMapSupport()) {
isMipMapped = false;
}
GrPixelConfig config = this->caps()->getConfigFromBackendFormat(backendFormat, ii.colorType());
if (config == kUnknown_GrPixelConfig) {
return SkSurfaceCharacterization(); // return an invalid characterization
}
if (!SkSurface_Gpu::Valid(this->caps(), config, ii.colorSpace())) {
return SkSurfaceCharacterization(); // return an invalid characterization
}
sampleCnt = this->caps()->getRenderTargetSampleCount(sampleCnt, config);
if (!sampleCnt) {
return SkSurfaceCharacterization(); // return an invalid characterization
}
GrFSAAType FSAAType = GrFSAAType::kNone;
if (sampleCnt > 1) {
FSAAType = this->caps()->usesMixedSamples() ? GrFSAAType::kMixedSamples
: GrFSAAType::kUnifiedMSAA;
}
if (willUseGLFBO0 && isTextureable) {
return SkSurfaceCharacterization(); // return an invalid characterization
}
if (isTextureable && !this->caps()->isConfigTexturable(config)) {
// Skia doesn't agree that this is textureable.
return SkSurfaceCharacterization(); // return an invalid characterization
}
return SkSurfaceCharacterization(sk_ref_sp<GrContextThreadSafeProxy>(this),
cacheMaxResourceBytes, ii,
origin, config, FSAAType, sampleCnt,
SkSurfaceCharacterization::Textureable(isTextureable),
SkSurfaceCharacterization::MipMapped(isMipMapped),
SkSurfaceCharacterization::UsesGLFBO0(willUseGLFBO0),
SkSurfaceCharacterization::VulkanSecondaryCBCompatible(false),
surfaceProps);
}
