Question about shaders

[Gordon_G]

Hi !

So, I would like to apply a texture file to only 1 element, so, a Shader.

But, I've not seen any example on the wiki so.. Could someone give me one ?

Or just, (could be better) to explain me, what functions use and why ? Thanks !

[NeXuS™]

You'll have to use

engineApplyShaderToWorldTexture

there is now no such function as engineApplyShaderToWorldModel.

You'll have to get the texture's name which you would like to change (eg. vehiclegrunge256). There is a good way to find out the texture's name tho, download this.

After you got the texture's name, you can get the element you wish to replace, and just do

engineApplyShaderToWorldTexture(shaderElement, textureName, elementVar)

and it's done. EZPZ.

[Gordon_G]

Thanks a lot ! 

How to do if I need to put an image instead of an effect file ?

[NeXuS™]

You could just add it to a renderTarget (via rendering, or just guiimage), and then apply that as the texture of the shader.

[Gordon_G]

I don't understand

 

EDIT : I think I get it, I will tell you after my try

Edited March 24, 2017 by Gordon_G

[itHyperoX]

 

client

tabla = {
--  YourPNGName    Textura name
    {"YourPNGName", "prolaps01"},
    {"YourPNGName", "heat_01"}
}


addEventHandler( "onClientResourceStart", resourceRoot,
function()
    for i = 1, #tabla do
        local shader, tec = dxCreateShader ( "texreplace.fx" )
        local tex = dxCreateTexture ( "files/"..tabla[i][1]..".png" )
        engineApplyShaderToWorldTexture ( shader, tabla[i][2] )
        engineApplyShaderToWorldTexture ( shader, tabla[i][2].."lod" )
        dxSetShaderValue ( shader, "gTexture", tex )
    end
end)

 

texreplace.fx

texture gTexture;

technique TexReplace
{
    pass P0
    {
        Texture[0] = gTexture;
    }
}

 

meta:

 

<meta>   

 <script src="sourceC.lua" type="client"></script>
    <file src="texreplace.fx"></file>
    
    <!-- Files -->
    <file src="YourPNGName.png"/>

</meta>

 

Edited March 24, 2017 by TheMOG

[Gordon_G]

Ii finally did it :

addEventHandler("onClientResourceStart", resourceRoot,
    function()
      
        myShader,tecName = dxCreateShader( "shader.fx"  )
        myImage = dxCreateTexture( "image.png" )
        if myShader and myImage then
            dxSetShaderValue( myShader, "tex0", myImage )
            engineApplyShaderToWorldTexture( myShader, "ws_dickgoblinmural" )
        else
            outputChatBox( "Problem - use: debugscript 3" )
        end
    end
)

And, need those files : shader.fx and mta-helper.fx

EDIT : I did not see your post TheMOG, sorry, but thanks

Edited March 24, 2017 by Gordon_G