docs: update Windows build instructions

Author: ericwa

README.md

@@ -41,13 +41,28 @@ source code.
 
 ## Compiling
 
-Dependencies: Embree 3.0+, TBB (TODO: version?), Sphinx (for building manuals)
+Required dependencies:
+- [Embree 4](https://github.com/RenderKit/embree)
+- [oneTBB](https://github.com/uxlfoundation/oneTBB)
+
+Optional dependencies:
+- Python, Sphinx (for building manuals)
+- Qt 6 (for `lightpreview` GUI)
+
+Bundled dependencies:
+- [fmt](https://github.com/fmtlib/fmt)
+- [jsoncpp](https://github.com/open-source-parsers/jsoncpp)
+- [nanobench](https://github.com/martinus/nanobench)
+- [pareto](https://github.com/alandefreitas/pareto)
+- [GoogleTest](https://github.com/google/googletest)
+- [stb_image](https://github.com/nothings/stb/blob/master/stb_image.h)
+- [stb_image_write](https://github.com/nothings/stb/blob/master/stb_image_write.h)
 
 ### Ubuntu 24.04
 
 NOTE: Builds using Ubuntu's embree packages produce a significantly slower `light` (i.e. over twice as slow) than ones released on Embree's GitHub. See `build-linux-64.sh` for a better method. 
 
-```
+```bash
 sudo apt update
 sudo apt install libembree-dev libtbb-dev cmake build-essential g++ qt6-base-dev
 git clone --recursive https://github.com/ericwa/ericw-tools
@@ -67,34 +82,32 @@ make -j 8
 ./lightpreview/lightpreview
 ```
 
-### Windows
+### Windows, obtaining required dependencies via vcpkg
 
-Example using vcpkg (32-bit build):
+Open a `cmd` window. First, obtain vcpkg and build the dependencies:
 
+```bat
+git clone https://github.com/microsoft/vcpkg
+cd vcpkg
+.\bootstrap-vcpkg.bat
+.\vcpkg.exe install embree tbb
+cd ..
 ```
-git clone --recursive https://github.com/ericwa/ericw-tools
-cd ericw-tools
 
-# creates a python virtual environment in the directory `sphinx-venv`
-# and install sphinx (for building the docs)
-py.exe -m venv sphinx-venv
-.\sphinx-venv\Scripts\Activate.ps1
-py.exe -m pip install -r docs/requirements.txt
+Next, clone and build ericw-tools:
 
-git clone https://github.com/microsoft/vcpkg
-.\vcpkg\bootstrap-vcpkg.bat
+```bat
+git clone --recursive https://github.com/ericwa/ericw-tools
+cd ericw-tools
 
-# NOTE: vcpkg builds for 32-bit by default
-# NOTE: takes 30+ minutes
-.\vcpkg\vcpkg install embree3
 mkdir build
 cd build
 
-# PowerShell syntax for getting current directory -
-# otherwise, replace with absolute path to "vcpkg/scripts/buildsystems/vcpkg.cmake"
-cmake .. -DCMAKE_TOOLCHAIN_FILE="$(pwd)/../vcpkg/scripts/buildsystems/vcpkg.cmake" -DCMAKE_GENERATOR_PLATFORM=Win32 -DSPHINX_EXECUTABLE="$(pwd)/../sphinx-venv/Scripts/sphinx-build.exe"
+cmake .. -DCMAKE_TOOLCHAIN_FILE="%cd%\..\..\vcpkg\scripts\buildsystems\vcpkg.cmake"
 ```
 
+Open `ericw-tools.sln`.
+
 #### IDE Tips - CLion
 
 - Modify the "Google Test" run/debug configuration template to have `--gtest_catch_exceptions=0`, otherwise the