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Merge pull request #10375 from Atlante45/feat/store-irradiance

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Store irradiance in cached KTX files
This commit is contained in:
Clément Brisset 2017-05-04 16:00:44 -07:00 committed by GitHub
commit d80704bfbf
1 changed files with 77 additions and 5 deletions
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82
libraries/gpu/src/gpu/Texture_ktx.cpp
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@ -99,6 +99,61 @@ struct GPUKTXPayload {
};
const std::string GPUKTXPayload::KEY { "hifi.gpu" };
struct IrradianceKTXPayload {
using Version = uint8;
static const std::string KEY;
static const Version CURRENT_VERSION{ 0 };
static const size_t PADDING{ 3 };
static const size_t SIZE{ sizeof(Version) + sizeof(SphericalHarmonics) + PADDING };
static_assert(IrradianceKTXPayload::SIZE == 148, "Packing size may differ between platforms");
static_assert(IrradianceKTXPayload::SIZE % 4 == 0, "IrradianceKTXPayload is not 4 bytes aligned");
SphericalHarmonics _irradianceSH;
Byte* serialize(Byte* data) const {
*(Version*)data = CURRENT_VERSION;
data += sizeof(Version);
memcpy(data, &_irradianceSH, sizeof(SphericalHarmonics));
data += sizeof(SphericalHarmonics);
return data + PADDING;
}
bool unserialize(const Byte* data, size_t size) {
if (size != SIZE) {
return false;
}
Version version = *(const Version*)data;
if (version != CURRENT_VERSION) {
return false;
}
data += sizeof(Version);
memcpy(&_irradianceSH, data, sizeof(SphericalHarmonics));
data += sizeof(SphericalHarmonics);
return true;
}
static bool isIrradianceKTX(const ktx::KeyValue& val) {
return (val._key.compare(KEY) == 0);
}
static bool findInKeyValues(const ktx::KeyValues& keyValues, IrradianceKTXPayload& payload) {
auto found = std::find_if(keyValues.begin(), keyValues.end(), isIrradianceKTX);
if (found != keyValues.end()) {
auto value = found->_value;
return payload.unserialize(value.data(), value.size());
}
return false;
}
};
const std::string IrradianceKTXPayload::KEY{ "hifi.irradianceSH" };
KtxStorage::KtxStorage(const std::string& filename) : _filename(filename) {
{
// We are doing a lot of work here just to get descriptor data
@ -304,16 +359,27 @@ ktx::KTXUniquePointer Texture::serialize(const Texture& texture) {
}
}
GPUKTXPayload keyval;
keyval._samplerDesc = texture.getSampler().getDesc();
keyval._usage = texture.getUsage();
keyval._usageType = texture.getUsageType();
GPUKTXPayload gpuKeyval;
gpuKeyval._samplerDesc = texture.getSampler().getDesc();
gpuKeyval._usage = texture.getUsage();
gpuKeyval._usageType = texture.getUsageType();
Byte keyvalPayload[GPUKTXPayload::SIZE];
keyval.serialize(keyvalPayload);
gpuKeyval.serialize(keyvalPayload);
ktx::KeyValues keyValues;
keyValues.emplace_back(GPUKTXPayload::KEY, (uint32)GPUKTXPayload::SIZE, (ktx::Byte*) &keyvalPayload);
if (texture.getIrradiance()) {
IrradianceKTXPayload irradianceKeyval;
irradianceKeyval._irradianceSH = *texture.getIrradiance();
Byte irradianceKeyvalPayload[IrradianceKTXPayload::SIZE];
irradianceKeyval.serialize(irradianceKeyvalPayload);
keyValues.emplace_back(IrradianceKTXPayload::KEY, (uint32)IrradianceKTXPayload::SIZE, (ktx::Byte*) &irradianceKeyvalPayload);
}
auto hash = texture.sourceHash();
if (!hash.empty()) {
// the sourceHash is an std::string in hex
@ -409,6 +475,12 @@ TexturePointer Texture::unserialize(const std::string& ktxfile, const ktx::KTXDe
// Assing the mips availables
texture->setStoredMipFormat(mipFormat);
texture->setKtxBacking(ktxfile);
IrradianceKTXPayload irradianceKtxKeyValue;
if (IrradianceKTXPayload::findInKeyValues(descriptor.keyValues, irradianceKtxKeyValue)) {
texture->overrideIrradiance(std::make_shared<SphericalHarmonics>(irradianceKtxKeyValue._irradianceSH));
}
return texture;
}