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VOXELFORMAT: save the palette image data as base64

master
Martin Gerhardy 2022-05-22 23:30:08 +02:00
parent 18350dc9a2
commit e7856fd146
1 changed files with 10 additions and 10 deletions
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20
src/modules/voxelformat/GLTFFormat.cpp
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@ -103,41 +103,40 @@ bool GLTFFormat::saveMeshes(const core::Map<int, int> &meshIdxNodeMap, const Sce
const voxel::Palette &palette = graphNode.palette();
int materialId = -1;
int texcoordIndex = 0;
if (graphNode.type() == SceneGraphNodeType::Model) {
const auto palTexIter = paletteMaterialIndices.find(palette.hash());
if (palTexIter != paletteMaterialIndices.end()) {
materialId = palTexIter->second;
Log::debug("Re-use material id %i for hash %" PRIu64, materialId, palette.hash());
} else {
const int textureIndex = (int)m.textures.size();
const int imageIndex = (int)m.images.size();
const core::String hashId = core::String::format("%" PRIu64, palette.hash());
core::String palettename = core::string::stripExtension(filename);
palettename.append(hashId);
palettename.append(".png");
const int imageIndex = (int)m.images.size();
{
tinygltf::Image colorPaletteImg;
colorPaletteImg.uri = core::string::extractFilenameWithExtension(palettename).c_str();
const std::string pal64 =
tinygltf::base64_encode((const unsigned char *)palette.colors, sizeof(palette.colors));
colorPaletteImg.uri = "data:image/png;base64," + pal64;
m.images.emplace_back(core::move(colorPaletteImg));
}
if (!palette.save(palettename.c_str())) {
Log::error("Failed to save palette data");
}
// TODO: save emissiveTexture
const int textureIndex = (int)m.textures.size();
{
tinygltf::Texture paletteTexture;
paletteTexture.source = imageIndex;
m.textures.emplace_back(core::move(paletteTexture));
}
// TODO: save emissiveTexture
{
tinygltf::Material mat;
if (withTexCoords) {
mat.pbrMetallicRoughness.baseColorTexture.index = textureIndex;
mat.pbrMetallicRoughness.baseColorTexture.texCoord = texcoordIndex;
} else if (withColor) {
mat.pbrMetallicRoughness.baseColorFactor = {1.0f, 1.0f, 1.0f, 1.0f};
}
@ -363,7 +362,8 @@ bool GLTFFormat::saveMeshes(const core::Map<int, int> &meshIdxNodeMap, const Sce
meshPrimitive.attributes["POSITION"] =
primIdxFactor * nthNodeIdx + 1; // The index of the accessor for positions
if (withTexCoords) {
meshPrimitive.attributes["TEXCOORD_0"] = primIdxFactor * nthNodeIdx + 2;
const core::String &texcoordsKey = core::String::format("TEXCOORD_%i", texcoordIndex);
meshPrimitive.attributes[texcoordsKey.c_str()] = primIdxFactor * nthNodeIdx + 2;
} else if (withColor) {
meshPrimitive.attributes["COLOR_0"] = primIdxFactor * nthNodeIdx + 2;
}