I'm gViewer

ImgViewer is a lightweight, high-performance image viewer designed for graphics programmers. It is inspired by tools like WinPIX and RenderDoc, providing a quick way to inspect image files without the overhead of heavy debugging suites.

NOTE This app is mostly vibed with AI. So don't expect a tasty code. I start with Copilot/ClaudeCode and then I use Antigravity to complete last 70% work.

Features

• High Dynamic Range (HDR) Support: View .hdr and .exr (via stb_image) and other floating point formats.
• DDS Support: Native support for DirectDraw Surface formats including compressed textures (BC1-BC7) and float formats (RGBA32F, RGBA16F).
• Pixel Inspection: Hover over any pixel to see its exact RGBA values in float precision.
• Histogram: Real-time RGB histogram visualization.
• Value Range Analysis: Automatically detects min/max values and allows manual range remapping (useful for depth maps or HDR values > 1.0).
• Magnifier: Inspect pixel-level details with a built-in magnifier tool.
• Modern UI: Clean, borderless window with docking support using ImGui.
• Performance: GPU-accelerated rendering using DirectX 12.

Supported Formats

• Common: PNG, BMP, TGA, JPG, GIF
• HDR: HDR (Radiance RGBE)
• DirectX: DDS (BC1-BC7, Uncompressed, Float)

Build Instructions

Prerequisites

• Windows 10/11
• Visual Studio 2022 (with "Desktop development with C++" workload)
• CMake 3.23+

Building via Command Line

# Generate build files (using Ninja or Visual Studio)
cmake -B build
# Build project
cmake --build build --config Release

Building via Visual Studio

1. Open the folder in Visual Studio.
2. Let CMake configure the project.
3. Select imgViewer.exe as the startup target.
4. Build and Run.

Usage

• Open Image: Drag and drop an image file into the window, or paste from clipboard (Ctrl+V support arrived).
• Pan: Middle Mouse Button drag.
• Zoom: Mouse Wheel.
• Magnify: Right-click to show the magnifier.
• Inspect: Hover over the image to see pixel values in the Info panel.

License

This project is open source.