Data Structure for Texture Utility

Release 0.8.0-Preview.1

Biome-specific texture building system

STPTextureDatabase

STPTextureDatabase is a non-owning storage of collection of texture data and information.

As a whole, texture ID and texture type acts as a compound primary key to uniquely identify the texture data. Internally, texture data with the same property will be grouped into a structure STPTextureGroup. This is beneficial for later packing texture with the same format into the same OpenGL texture array.

STPTextureSplatBuilder

A simple utility that allows each biome to have different texture. Texture can have different splatting rules within the biome on the terrain, and currently the builder allows altitude and gradient splatting.

STPTextureFactory (WIP)

A generator class that takes texture database and splat builder, combine them in new data structures such that device and shader can make use of those information efficiently to generate terrain texture splatmap.

We have the data structure ready for use, data generation will be coming later...

General fixes and improvement

• Update SuperTest+ to support the latest release of Catch2:
  • As of catchorg/Catch2@3f8cae8 and catchorg/Catch2@f02c267
    • Update STPConsoleReporter and replace most std::string with std::string_view to eliminate unnecessary memory operations.
    • Allow reporter to use Catch::StringRef and convert it to std::string_view.
    • Reporter now indents the test section name based on the nested depth.
  • As of catchorg/Catch2@4269540
    • Make some modification to STPTestRTC to support the renamed matcher.
    • Change floating point comparison in STPTestPermutation with Catch build-in floating point matchers.
• Replace most emplace() for map containers with try_emplace().
• Declare all move constructor as noexcept.
• Change type of PV matrix mapping from char* to unsigned char* in STPMasterRenderer.
• STPChunkManager now sync cudaStream_t when cudaGraphicsUnmapResources() instead of doing it explicitly during async loading. Also stream is now no longer sync after each rendering buffer clear operation. This should result in better device workflow overlap.
• Extract the hash combine algorithm from STPChunkStorage into a new class STPHashCombine.

Improvement to STPSingleHistogramFilter

• Simplify loops with functions from standard library algorithm header.
• Change the reallocation condition check from greater or equal than the last element to greater.
• Add a return type to insert_back_n(), which now returns the iterator to the last inserted element to eliminate the need of indexing the element.
• Replace C standard library functions with C++ version, for example memmove() to std::copy().