diff --git a/src/renderers/webgl/WebGLTextures.js b/src/renderers/webgl/WebGLTextures.js
index 11ba4c408631d0..a965139f04ca29 100644
--- a/src/renderers/webgl/WebGLTextures.js
+++ b/src/renderers/webgl/WebGLTextures.js
@@ -157,6 +157,17 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 		}
 
+		if ( glFormat === _gl.RED_INTEGER ) {
+
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8UI;
+			if ( glType === _gl.UNSIGNED_SHORT ) internalFormat = _gl.R16UI;
+			if ( glType === _gl.UNSIGNED_INT ) internalFormat = _gl.R32UI;
+			if ( glType === _gl.BYTE ) internalFormat = _gl.R8I;
+			if ( glType === _gl.SHORT ) internalFormat = _gl.R16I;
+			if ( glType === _gl.INT ) internalFormat = _gl.R32I;
+
+		}
+
 		if ( glFormat === _gl.RG ) {
 
 			if ( glType === _gl.FLOAT ) internalFormat = _gl.RG32F;