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write the source hash in ktx header in binary

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Stephen Birarda 2017-04-20 16:18:51 -07:00 committed by Atlante45
parent 927efc88f0
commit 3c5754282f
2 changed files with 8 additions and 1 deletions
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1
libraries/gpu/src/gpu/Texture.h
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@ -35,6 +35,7 @@ namespace ktx {
namespace gpu {
extern const std::string SOURCE_HASH_KEY;
const uint8 SOURCE_HASH_BYTES = 16;
// THe spherical harmonics is a nice tool for cubemap, so if required, the irradiance SH can be automatically generated
// with the cube texture

8
libraries/gpu/src/gpu/Texture_ktx.cpp
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@ -13,7 +13,10 @@
#include "Texture.h"
#include <qdebug.h>
#include <QtCore/QByteArray>
#include <ktx/KTX.h>
using namespace gpu;
using PixelsPointer = Texture::PixelsPointer;
@ -312,7 +315,10 @@ ktx::KTXUniquePointer Texture::serialize(const Texture& texture) {
auto hash = texture.sourceHash();
if (!hash.empty()) {
keyValues.emplace_back(SOURCE_HASH_KEY, static_cast<uint32>(hash.size()), (ktx::Byte*) hash.c_str());
// the sourceHash is an std::string in hex
// we use QByteArray to take the hex and turn it into the smaller binary representation (16 bytes)
auto binaryHash = QByteArray::fromHex(QByteArray::fromStdString(hash));
keyValues.emplace_back(SOURCE_HASH_KEY, static_cast<uint32>(binaryHash.size()), (ktx::Byte*) binaryHash.data());
}
auto ktxBuffer = ktx::KTX::create(header, images, keyValues);