render parity unit K: 40250 DDS mip levels

DXT DDS textures upload the file's own mip levels like 40250
CGraphicImageTexture::CreateDDSTexture (max(1, dwMipMapCount), level i read
at sum(dwLinearSize>>2k), Copy of dwLinearSize>>2i bytes) instead of a
regenerated chain. Non-DDS images keep the D3DX_DEFAULT full chain and mem:
textures get one level. The invented is_ui_tex no-mip rule (icon/, ui/,
locale/, <=128px) is deleted. dxt_decode_test is registered in ctest with
mip-level cases.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

audit/history.jsonl

@@ -568,3 +568,4 @@
 {"date": "2026-09-28T04:59:25+00:00", "unit": "GameLib/MapOutdoorWater.cpp", "action": "unit H2: platform rewrite replaced by the full 40250 source (native-terrain gate only): far-fog second water pass restored, invented LIGHTING=FALSE save/restore and empty-texture guard removed", "evidence": "build ok; fake-server spawn frame 900 unchanged (mean abs diff ~0.4/255, no water in view); water visuals NEEDS_LIVE"}
 {"date": "2026-09-28T05:08:46+00:00", "unit": "EterPythonLib/PythonGraphic.cpp", "action": "unit I: SetGamma, RenderCoolTimeBox, RenderUp/DownButton, GetAvailableMemory ported from 40250 (stubs removed); cooldown fan drawn as polygon UI commands; SetViewport/RestoreViewport documented as ADAPTED (device viewport + UI clip)", "evidence": "port.app_loop drawing_primitives checks fan geometry at fTime 0.25/0.3/1.0 and viewport clip push/pop; cooldown visuals NEEDS_LIVE"}
 {"date": "2026-09-28T05:22:26+00:00", "unit": "UserInterface/PythonApplication.cpp", "action": "unit J: Process gains 40250's render-time/face-count block and automatic sight range (SetViewDistanceSet(0)); SetForceSightRange/SkipRenderBuffering ported from stubs; invented SetCursorPosition in UpdateGame removed; boilerplate notes on RenderGame/UpdateGame/Process/Destroy replaced (Destroy marked DIVERGENT: never called, teardown via PythonBoot::Stop)", "evidence": "ctest -j3 35/35; fake-server spawn frame 900 mean abs diff 0.33/255 vs previous (fog range not in view); sight-range visuals NEEDS_LIVE"}
+{"date": "2026-09-28T05:29:23+00:00", "unit": "EterLib/GrpImageTexture.cpp", "action": "unit K: DXT DDS textures upload the file's own mip levels (40250 CreateDDSTexture: max(1,dwMipMapCount), dwLinearSize>>2i Copy) instead of a regenerated chain; non-DDS keep the D3DX_DEFAULT full chain; mem: textures one level; invented is_ui_tex no-mip rule (icon/ui/locale/<=128px) deleted; dxt_decode_test registered in ctest with mip-level cases", "evidence": "ctest -j3 36/36; fake-server spawn frame 900: near terrain diff 0.00, far terrain 2.7/255 (minified levels now from the file), rest is UI timing (area title/chat); far-terrain look NEEDS_LIVE"}

audit/port-map/EterLib/GrpImageTexture.cpp.json

@@ -0,0 +1,60 @@
+{
+  "reference": "EterLib/GrpImageTexture.cpp",
+  "reference_sha256": "849e6b9106cd169d97687adbcea6faba8bb0dc2ef682b51993a47443f837c9ae",
+  "priority": "P4",
+  "contracts": [],
+  "functions": {
+    "CGraphicImageTexture::Lock": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::Unlock": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::Initialize": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::Destroy": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::CreateDeviceObjects": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::Create": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::CreateFromTexturePointer": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::CreateDDSTexture": {
+      "status": "ADAPTED",
+      "impl": [
+        "extension/src/dxt.cpp:decode",
+        "native_render/main.cpp:get_gpu_texture",
+        "native_render/main.cpp:upload_texture"
+      ],
+      "test": "extension/tests/dxt_decode_test.cpp",
+      "note": "The platform CreateDDSTexture member is a stub; its level logic lives in the texture decode/upload the renderer does. mipmapCount = max(1, min(dwMipMapCount, MAX_MIPLEVELS=12)), level i read at sum(dwLinearSize>>2k) with CDXTCImage::Copy's dwLinearSize>>2i bytes (the rest zero, uninitialised in 40250), decoded to RGBA8 (no GPU DXT) and uploaded as file levels, not regenerated. Divergence: without DDSD_MIPMAPCOUNT, or with DDSD_PITCH, 40250 creates the extra levels uninitialised; here that is one level. IsLowTextureMemory's uTexBias level skip is not applied (the port's ms_isLowTextureMemory is false). The far-terrain look NEEDS_LIVE."
+    },
+    "CGraphicImageTexture::CreateFromMemoryFile": {
+      "status": "ADAPTED",
+      "impl": [
+        "extension/src/platform/EterLib/GrpImageTexture.cpp:CGraphicImageTexture::CreateFromMemoryFile",
+        "native_render/main.cpp:get_gpu_texture"
+      ],
+      "test": "extension/tests/dxt_decode_test.cpp",
+      "note": "The platform body records only the size and file name; the renderer decodes the bytes. 40250 dispatch is kept: a DXT DDS takes the CreateDDSTexture levels, anything else takes D3DXCreateTextureFromFileInMemoryEx(MipLevels=D3DX_DEFAULT), i.e. a full generated chain (vkCmdBlitImage linear, instead of D3DX's box filter). The invented is_ui_tex rule (no mips for icon/, ui/, locale/ and textures <=128px) was removed. Memory textures (mem:, 40250 CreateTexture levels=1) get one level. GRAPHICS_CAPS_HALF_SIZE_IMAGE/low-memory A4R4G4B4 re-encode is not applied."
+    },
+    "CGraphicImageTexture::SetFileName": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::CreateFromDiskFile": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::CGraphicImageTexture": {
+      "status": "TODO"
+    },
+    "CGraphicImageTexture::~CGraphicImageTexture": {
+      "status": "TODO"
+    }
+  }
+}