The ERR_GFX_D3D_INIT error (often appearing as part of a "Failed Initialization" message) is a common issue in games like and Red Dead Redemption 2

and I’ll provide targeted steps.

The graphics device (GPU) or Direct3D runtime failed to compile, validate, or execute a required shader (Vertex, Pixel, Geometry, Compute, or Hull/Domain shader). 1 may indicate a shader stage index or a specific failure type (e.g., invalid shader bytecode, unsupported feature level, or resource binding mismatch).

On : Right-click game > Properties > Installed Files > Verify integrity of game files .

Corrupted installation files can prevent shaders from loading.