ShaderChunks: Moved logic from shaders to javascript.

src/renderers/shaders/ShaderChunk/uv_pars_fragment.glsl.js

@@ -1,5 +1,5 @@
 export default /* glsl */`
-#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
+#ifdef USE_UV
 
 	varying vec2 vUv;
 

src/renderers/shaders/ShaderChunk/uv_pars_vertex.glsl.js

@@ -1,5 +1,5 @@
 export default /* glsl */`
-#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
+#ifdef USE_UV
 
 	varying vec2 vUv;
 	uniform mat3 uvTransform;

src/renderers/shaders/ShaderChunk/uv_vertex.glsl.js

@@ -1,5 +1,5 @@
 export default /* glsl */`
-#if defined( USE_MAP ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )  || defined( USE_SPECULARMAP ) || defined( USE_ALPHAMAP ) || defined( USE_EMISSIVEMAP ) || defined( USE_ROUGHNESSMAP ) || defined( USE_METALNESSMAP )
+#ifdef USE_UV
 
 	vUv = ( uvTransform * vec3( uv, 1 ) ).xy;
 

src/renderers/webgl/WebGLProgram.js

@@ -400,6 +400,7 @@ function WebGLProgram( renderer, extensions, code, material, shader, parameters,
 
 			parameters.vertexTangents ? '#define USE_TANGENT' : '',
 			parameters.vertexColors ? '#define USE_COLOR' : '',
+			parameters.vertexUvs ? '#define USE_UV' : '',
 
 			parameters.flatShading ? '#define FLAT_SHADED' : '',
 
@@ -516,6 +517,7 @@ function WebGLProgram( renderer, extensions, code, material, shader, parameters,
 
 			parameters.vertexTangents ? '#define USE_TANGENT' : '',
 			parameters.vertexColors ? '#define USE_COLOR' : '',
+			parameters.vertexUvs ? '#define USE_UV' : '',
 
 			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
 

src/renderers/webgl/WebGLPrograms.js

@@ -166,6 +166,7 @@ function WebGLPrograms( renderer, extensions, capabilities ) {
 
 			vertexTangents: ( material.normalMap && material.vertexTangents ),
 			vertexColors: material.vertexColors,
+			vertexUvs: !! material.map || !! material.bumpMap || !! material.normalMap || !! material.specularMap || !! material.alphaMap || !! material.emissiveMap || !! material.roughnessMap || !! material.metalnessMap || !! material.clearCoatNormalMap,
 
 			fog: !! fog,
 			useFog: material.fog,