render.DepthRange
Description
Set's the depth range of the upcoming render.
Arguments
Example
Perform a downward screen wipe effect on all opaque objects once the client connects.
local depthmin = 1.0
function GM:PreDrawOpaqueRenderables(bDrawingDepth, bDrawingSkybox)
render.DepthRange(depthmin, 1.0)
if(depthmin > 0.0) then
depthmin = depthmin - 0.001
end
end
Example
Same effect as above but with a dark shadow skin present where the model is being drawn.
local depthmin = 1.0
local spawn_copies = {} -- The shadow copies
function GM:PreDrawOpaqueRenderables(bDrawingDepth, bDrawingSkybox)
render.DepthRange(depthmin, 1.0)
if(!spawn_copies) then return false end
if(depthmin > 0.0) then
depthmin = depthmin - 0.001
else
local alpha = 0
local valid_copies = 0
-- Fade out the shadow copies and remove them
for _, spawncopy in pairs(spawn_copies) do
if(IsValid(spawncopy)) then
alpha = spawncopy:GetColor().a
if(alpha > 0) then
spawncopy:SetColor(Color(255, 255, 255, alpha-1))
else
spawncopy:Remove()
end
valid_copies = valid_copies + 1
end
end
-- Nullify table since we aren't using it any more
if(valid_copies == 0) then
spawn_copies = nil
end
end
end
function GM:OnEntityCreated(ent)
if(!spawn_copies) then return end
-- Prevents infinite loop and other errors
if(ent:GetClass() != "class C_BaseFlex" &&
ent:GetRenderGroup() == RENDERGROUP_OPAQUE &&
ent:GetClass() != "gmod_hands") then
local mdl = ent:GetModel()
-- Check that the entity is a model and not a brush
if(mdl && string.find(mdl, ".mdl")) then
local spawncopy = ClientsideModel(mdl)
-- A material with $ignorez set to 1 works best here
spawncopy:SetMaterial("models/overlay_rendertarget")
spawncopy:AddEffects(EF_BONEMERGE)
spawncopy:SetParent(ent)
spawncopy:SetRenderMode(RENDERMODE_TRANSALPHA)
spawncopy:SetColor(Color(255, 255, 255, 92))
table.insert(spawn_copies, spawncopy)
end
end
end
Output: 
Rust
Steamworks
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