-- old
function EGP:SetMaterial( Mat )
    if (!Mat) then
        surface.SetTexture()
    elseif (type(Mat) == "string") then
        surface.SetTexture( self:CacheMaterial( Mat ) )
    elseif (type(Mat) == "Entity") then
        if (!Mat:IsValid() or !Mat.GPU or !Mat.GPU.RT) then return end
        local OldTex = WireGPU_matScreen:GetMaterialTexture("$basetexture")
        WireGPU_matScreen:SetMateriature("$basetexture", Mat.GPU.RT)
        surface.SetTexture(surface.GetTextureID( "GPURT" ))
        return OldTex
    end
end


-- new
function EGP:SetMaterial( Mat )
    local OldTex = WireGPU_matScreen:GetMaterialTexture("$basetexture")

    if (!Mat) then
        surface.SetTexture()
    elseif (type(Mat) == "string") then
        surface.SetTexture( self:CacheMaterial( Mat ) )
    elseif (type(Mat) == "Entity") then
        if (!Mat:IsValid() or !Mat.GPU or !Mat.GPU.RT) then return end
        WireGPU_matScreen:SetMateriature("$basetexture", Mat.GPU.RT)
        surface.SetTexture(surface.GetTextureID( "GPURT" ))
    end
    return OldTex
end