[moistman7]

What

New RenoDX mod for Well Dweller (GameMaker, D3D11).

• Upgrades output-size RGBA8 render targets (application surface, LUT output, GUI composite) to RGBA16F so additive sprite highlights survive above 1.0.
• Replaces the 64³ LUT colour-grade shader (0xBCCF990A):
  • Vanilla tone mapper clamps to the original RGBA8 range for parity.
  • HDR divides by the max channel before the LUT, so in-range pixels grade exactly as vanilla; ToneMapPass(untonemapped, graded_sdr, neutral_sdr) restores highlight range.
  • Negative values from subtractive blends are floored, as RGBA8 did.
• Adds a Hue Shift Method setting (Vanilla Clip / ACES). Defaults: RenoDRT, ACES hue shift 100, Blowout 30.

Verification

• Build: cmake --build --preset clang-x64-debug --target welldweller → renodx-welldweller.addon64.
• DevKit: 1:1 baseline of 0xBCCF990A matched the original output CRC; the addon-sourced shader and RGBA16F upgrades are confirmed in snapshots; no NaN/Inf in LUT output.
• In-game: sliders affect the scene, UI brightness stays separate, and Vanilla tone mapper matches the original.

🤖 Generated with Claude Code

[Copilot]

🔵 Needs a closer look

It is a new HDR game mod with custom color-pipeline shader math, resource-format upgrades, and a Preset Off gap that require human and in-game runtime verification.

1 open finding

• Preset Off callback is unimplemented and cannot restore vanilla settings · New

What changed in this PR

This PR adds a new RenoDX HDR mod for Well Dweller (GameMaker, D3D11). It upgrades the game's output-size RGBA8 render targets (application surface, LUT output, GUI composite) to RGBA16F so additive sprite highlights survive above 1.0, and replaces the 64³ LUT color-grade shader (0xBCCF990A) with a max-channel LUT bridge that preserves the vanilla grade while recovering HDR range.

Changes:

• New mod scaffold (addon.cpp, shared.h, metadata.json, swap-chain proxy shaders) derived from the generic template, plus an unconditional RGBA8→RGBA16F output-size upgrade and user-toggleable resource upgrades.
• Replaced LUT shader: Vanilla/0 saturate-emulates the original RGBA8 clamp; HDR path rolls off the max channel (c_infinity_rolloff::MaxChannel, engineered neutral_sdr), samples the vanilla sRGB-domain LUT as graded_sdr, then ToneMapPass(untonemapped, graded_sdr, neutral_sdr) reconstructs highlight range.
• Added a "Hue Shift Method" setting (Vanilla Clip / ACES) with defaults RenoDRT, ACES hue shift 100, Blowout 30.

File	Description
src/​games/​welldweller/​0xBCCF990A.ps_4_0.hlsl	LUT color-grade shader with max-channel HDR bridge and Vanilla/0 RGBA8 clamp emulation.
src/​games/​welldweller/​addon.cpp	Addon setup: settings, resource upgrades, swapchain proxy config; OnPresetOff left empty (see comment).
src/​games/​welldweller/​shared.h	ShaderInjectData layout and RenoDX defines; adds tone_map_hue_shift_method.
src/​games/​welldweller/​swap_chain_proxy_pixel_shader.ps_5_x.hlsl	Final SwapChainPass output-encoding proxy.
src/​games/​welldweller/​swap_chain_proxy_vertex_shader.vs_5_x.hlsl	Fullscreen-triangle vertex shader for the proxy.
src/​games/​welldweller/​metadata.json	Mod metadata (Steam App ID, D3D11, x64).

🧠 Review effort: Balanced

---

💡 Configure MCP servers for context-aware, tailored reviews. Learn more in the docs.