To display only one of the RGB channels of a texture in Spine, you would typically need to manipulate the shader or the rendering process to isolate and display a single channel. Spine itself does not provide a direct option to show only one channel (like red, green, or blue) from a texture. However, you can achieve this effect by customizing the shader used in your rendering pipeline. For example, in a WebGL context, you might modify the shader to output only the red channel by setting the green and blue channels to zero. This would require some programming knowledge to adjust the shader code accordingly.
