Direct3D 8 - Pixel Shader - Instructions - texbem

Last edited 2026-02-20

The tex applies texture coordinate distortion based on vertex data from another texture

The texbem syntax looks like this:

texbem x, y;

x: This is the target texture register (e.g., t1) where the texture sample will be sent after distortion.

y: This is source register containing bump map data.

This instruction may not work properly!

Example code:

texture T_Image;

texture T_Background;

technique tech_main

{

    pass P0

    {

        Texture[0] = <T_Image>;

        Texture[2] = <T_Background>;

        PixelShader = asm

        {

            ps.1.1;

            tex t0;                         // <- Load the T_Image texture

            texbem t1, t0;                  // <- Apply a fake bump from T_Image and assign to T_Background texture register

            mov r0, t1;                     // <- Assign the result

        };

    }

}

This example requires the following in the .XML file:

• Flag <dx8>yes</dx8>
• Flag <BackgroundTexture>1</BackgroundTexture>

(More information about .XML files can be found here)

Details table:

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