[HELP] Ren712 Object-Preview shader apply problems

[Rolplay]

Hi! I use @Ren_712's object-viewer resource for my cars, and i have a problem with using shaders. I want to apply a light shader to the car, which turns on only the vehiclelights128 texture without the lights.

Here is my shader: 

#include "mta-helper.fx"

float gMultiplier = 0;

sampler Sampler0 = sampler_state
{
    Texture         = (gTexture0);
    MinFilter = Linear;
	MagFilter = Linear;
};


struct VSInput
{
  float3 Position : POSITION0;
  float2 TexCoord : TEXCOORD0;
};

struct PSInput
{
  float4 Position : POSITION0;
  float2 TexCoord : TEXCOORD0;
};

PSInput VertexShaderFunction(VSInput VS)
{
    PSInput PS = (PSInput)0;

    PS.Position = MTACalcScreenPosition ( VS.Position );
    PS.TexCoord = VS.TexCoord;

    return PS;
}

float4 PixelShaderFunction(PSInput PS) : COLOR0
{
    float4 color = tex2D(Sampler0, PS.TexCoord);
    color = color*gMultiplier;

    return color;
}

technique tec0
{
    pass P0
    {
        VertexShader = compile vs_2_0 VertexShaderFunction();
        PixelShader = compile ps_2_0 PixelShaderFunction();
    }
}

And here is my client script, which turn on the light. 

local animShads = {}
local lights = 0



    function updateLights(myElementRT2)
        
        if lights == 0 then
            setVehicleOverrideLights( myElementRT2, 1 )
            
            if animShads[myElementRT2] then
                destroyElement(animShads[myElementRT2][1])
                animShads[myElementRT2] = nil

            end
        elseif lights == 1 then
            local shad = dxCreateShader("shader2.fx")
            
            animShads[myElementRT2] = {shad,0}
            iprint(animShads)
            engineApplyShaderToWorldTexture( shad, tex_reverse, myElementRT2)

        end
    end
    
    local last = 0
    
    function updateMultipliers()
        local cur = getTickCount()-last

        last = getTickCount()
        for k,v in pairs(animShads) do
            --iprint(v[2])
            v[2] = v[2] + cur/1000
            dxSetShaderValue(v[1],"gMultiplier",v[2])
            if v[2] >= 1 then
                destroyElement(v[1])
                setVehicleOverrideLights(k, 2 )
                setVehicleHeadLightColor(k,0,0,0)
                animShads[k] = nil
                --setVehicleHeadLightColor(veh,0,0,0)
            end
        end
    end
    addEventHandler("onClientRender",root,updateMultipliers)
            if myElement then


                        if lights == 0 then
                        lights = 1

                        elseif lights == 1 then
                        lights = 0
                        else
                        lights = 0
                        
                        end
                        local myElementRT = exports.object_preview:getRenderTarget()
                        iprint(myElementRT)
                        updateLights(myElementRT)
                        end
                end

PS.: I think this is not the script's fault because its work fine with normal cars which spawned on world.

Edited February 1, 2021 by Rolplay

[Hoffmann]

As far as I know, you have to combine two shaders in order to display it in preview properly.

[Rolplay]

4 hours ago, Hoffmann said:

As far as I know, you have to combine two shaders in order to display it in preview properly.

Thank you, i try it