WebGLPrograms: Clean up.

src/renderers/webgl/WebGLProgram.js

@@ -667,7 +667,7 @@ function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
 	vertexShader = unrollLoops( vertexShader );
 	fragmentShader = unrollLoops( fragmentShader );
 
-	if ( parameters.isWebGL2 && ! parameters.isRawShaderMaterial ) {
+	if ( parameters.isWebGL2 && parameters.isRawShaderMaterial !== true ) {
 
 		// GLSL 3.0 conversion for built-in materials and ShaderMaterial
 

src/renderers/webgl/WebGLPrograms.js

@@ -163,8 +163,8 @@ function WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingSta
 			fragmentShader: fragmentShader,
 			defines: material.defines,
 
-			isRawShaderMaterial: material.isRawShaderMaterial,
-			isShaderMaterial: material.isShaderMaterial,
+			isRawShaderMaterial: material.isRawShaderMaterial === true,
+			glslVersion: material.glslVersion,
 
 			precision: precision,
 
@@ -270,9 +270,7 @@ function WebGLPrograms( renderer, cubemaps, extensions, capabilities, bindingSta
 			rendererExtensionDrawBuffers: isWebGL2 || extensions.get( 'WEBGL_draw_buffers' ) !== null,
 			rendererExtensionShaderTextureLod: isWebGL2 || extensions.get( 'EXT_shader_texture_lod' ) !== null,
 
-			customProgramCacheKey: material.customProgramCacheKey(),
-
-			glslVersion: material.glslVersion
+			customProgramCacheKey: material.customProgramCacheKey()
 
 		};