Method GetSortKey

Sources/nCine/Graphics/Material.cpp:194–208

	}

	std::uint32_t Material::GetSortKey()
	{
		constexpr std::uint32_t Seed = 1697381921;
		// Align to 64 bits for `fasthash64()` to properly work on Emscripten without alignment faults
		static SortHashData hashData alignas(8);

		for (std::uint32_t i = 0; i < GLTexture::MaxTextureUnits; i++) {
			hashData.textures[i] = (textures_[i] != nullptr) ? textures_[i]->GetGLHandle() : 0;
		}
		hashData.shaderProgram = shaderProgram_->GetGLHandle();
		hashData.srcBlendingFactor = glBlendingFactorToInt(srcBlendingFactor_);
		hashData.destBlendingFactor = glBlendingFactorToInt(destBlendingFactor_);

		return (std::uint32_t)xxHash3(reinterpret_cast<const void*>(&hashData), sizeof(SortHashData), Seed);
	}
}