new input system

interfaces/Crafter.Graphics-Mesh.cppm

@@ -24,6 +24,7 @@ module;
 export module Crafter.Graphics:Mesh;
 import std;
 import Crafter.Math;
+import Crafter.Asset;
 import :VulkanBuffer;
 
 export namespace Crafter {
@@ -33,11 +34,25 @@ export namespace Crafter {
         VulkanBuffer<char, false> blasBuffer;
         VulkanBuffer<Vector<float, 3, 3>, true> vertexBuffer;
         VulkanBuffer<std::uint32_t, true> indexBuffer;
+        // Lives until the cmd buffer issued by the compressed Build path
+        // completes execution. Kept as a member so the recorded
+        // vkCmdDecompressMemoryEXT references valid memory until the queue
+        // submit signals — caller must not re-Build or destroy the Mesh
+        // before that submit's fence is signaled (same contract as the
+        // existing uncompressed path).
+        VulkanBuffer<std::byte, true> compressedStaging;
         VkAccelerationStructureGeometryTrianglesDataKHR blasData;
         VkAccelerationStructureGeometryKHR blas;
         VkAccelerationStructureKHR accelerationStructure;
         VkDeviceAddress blasAddr;
         bool opaque;
         void Build(std::span<Vector<float, 3, 3>> verticies, std::span<std::uint32_t> indicies, VkCommandBuffer cmd);
+        // GPU path: decompresses vertex (region 0) and index (region 1) streams
+        // from asset.blob into vertexBuffer / indexBuffer using
+        // VK_EXT_memory_decompression. Falls back to CPU decode + the
+        // uncompressed Build if Device::memoryDecompressionSupported is false.
+        // Region 2 (data) is not consumed here — the caller decompresses it
+        // into their own buffer if needed (or uses Compression::DecompressCPU).
+        void Build(const ::Crafter::CompressedMeshAsset& asset, VkCommandBuffer cmd);
     };
 }