If you downloaded a repack (FitGirl, etc.), the file is likely still inside the original setup.exe or .bin archive.
Open Notepad, paste this:
For users with low-end or older graphics cards, the (DirectX Control Panel) utility can force the game to use the WARP (Windows Advanced Rasterization Platform) software renderer, bypassing hardware limitations: globalshadercachepcd3dsm4bin file download repack
: Means the shaders are compiled specifically for Shader Model 4.0, which corresponds to DirectX 10 hardware capabilities. If you downloaded a repack (FitGirl, etc