Hey all, I’m working on making a glowing mystical entity. I’m trying to give it a nice glow, so I’m using **[G.DynamicLight
http://wiki.garrysmod.com/favicon.ico](http://wiki.garrysmod.com/?title=G.DynamicLight)**. However, it only lights up the area around it. Is there any way to make a fuzzy orb type light in the middle of the prop?
i use the stencil buffers to do that for my gamemode
Could you explain further upon that? I’ve no idea how to use stencil buffers.
You’ll need to use a sprite and DynamicLight. Look at the code for gmod_light in the garry’s mod source code.
i dont know really how to use the stencil buffers either, but Jinto gave some really good example code. this is what i use:
include(“shared.lua”)
local MaterialBlurX = Material( “pp/blurx” );
local MaterialBlurY = Material( “pp/blury” );
local MaterialWhite = CreateMaterial( “WhiteMaterial”, “VertexLitGeneric”, {
["$basetexture"] = “color/white”,
["$vertexalpha"] = “1”,
["$model"] = “1”, } );
local MaterialComposite = CreateMaterial( “CompositeMaterial”, “UnlitGeneric”, {
["$basetexture"] = “_rt_FullFrameFB”,
["$additive"] = “1”, } );
// we need two render targets, if you don’t want to create them yourself, you can // use the bloom textures, they are quite low resolution though.
// render.GetBloomTex0() and render.GetBloomTex1();
local RT1 = render.GetBloomTex0()
local RT2 = render.GetBloomTex1();
/------------------------------------ RenderToStencil() ------------------------------------/
local function RenderToStencil( entity )
// tell the stencil buffer we’re going to write a value of one wherever the model
// is rendered
render.SetStencilEnable( true );
render.SetStencilFailOperation( STENCILOPERATION_KEEP );
render.SetStencilZFailOperation( STENCILOPERATION_KEEP );
render.SetStencilPassOperation( STENCILOPERATION_REPLACE );
render.SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_ALWAYS );
render.SetStencilWriteMask( 1 );
render.SetStencilReferenceValue( 1 );
// this uses a small hack to render ignoring depth while not drawing color
// i couldn’t find a function in the engine to disable writing to the color channels
// i did find one for shaders though, but I don’t feel like writing a shader for this.
cam.IgnoreZ( true );
render.SetBlend( 0 );
SetMaterialOverride( MaterialWhite );
entity:DrawModel();
SetMaterialOverride();
render.SetBlend( 1 );
cam.IgnoreZ( false );
// don’t need this for the next pass
render.SetStencilEnable( false );
end
/------------------------------------ RenderToGlowTexture() ------------------------------------/
local function RenderToGlowTexture( entity )
local w, h = ScrW(), ScrH();
// draw into the white texture
local oldRT = render.GetRenderTarget();
render.SetRenderTarget( RT1 );
render.SetViewPort( 0, 0, 512, 512 );
cam.IgnoreZ( true );
render.SuppressEngineLighting( true );
render.SetColorModulation( 1, 0, 0 );
// Set color of glow here
SetMaterialOverride( MaterialWhite );
entity:DrawModel();
SetMaterialOverride();
render.SetColorModulation( 1, 1, 1 );
render.SuppressEngineLighting( false );
cam.IgnoreZ( false );
render.SetViewPort( 0, 0, w, h );
render.SetRenderTarget( oldRT );
end
/------------------------------------ RenderScene() ------------------------------------/
local function RenderScene( Origin, Angles )
render.ClearRenderTarget( RT1, Color( 0, 0, 0, 255 ) );
end hook.Add( “RenderScene”, “ResetGlow”, RenderScene );
/------------------------------------ RenderScreenspaceEffects() ------------------------------------/
local function RenderScreenspaceEffects( )
MaterialBlurX:SetMaterialTexture( “$basetexture”, RT1 );
MaterialBlurY:SetMaterialTexture( “$basetexture”, RT2 );
MaterialBlurX:SetMaterialFloat( “$size”, 2 );
MaterialBlurY:SetMaterialFloat( “$size”, 2 );
local oldRT = render.GetRenderTarget();
// blur horizontally
render.SetRenderTarget( RT2 );
render.SetMaterial( MaterialBlurX );
render.DrawScreenQuad();
// blur vertically
render.SetRenderTarget( RT1 );
render.SetMaterial( MaterialBlurY );
render.DrawScreenQuad();
render.SetRenderTarget( oldRT );
// tell the stencil buffer we’re only going to draw
// where the player models are not.
render.SetStencilEnable( true );
render.SetStencilReferenceValue( 0 );
render.SetStencilTestMask( 1 );
render.SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
render.SetStencilPassOperation( STENCILOPERATION_ZERO );
// composite the scene
MaterialComposite:SetMaterialTexture( “$basetexture”, RT1 );
render.SetMaterial( MaterialComposite );
render.DrawScreenQuad();
// don’t need this anymore
render.SetStencilEnable( false );
end
hook.Add( “RenderScreenspaceEffects”, “CompositeGlow”, RenderScreenspaceEffects );
/------------------------------------ PrePlayerDraw() ------------------------------------/
function ENT:Draw()
self.Entity:DrawModel()
RenderToStencil( self );
RenderToGlowTexture( self );
end
[editline]03:01PM[/editline]
however, that requires some render targets’ give me a sec to write it so it dosent
Either you didn’t understand his question, or you don’t know what you’re talking about.
This is the way to go. Do it.
How about both?