diff --git a/src/constants.js b/src/constants.js
index 27b2b41ba18cd0..b060ae6f6f89ec 100644
--- a/src/constants.js
+++ b/src/constants.js
@@ -101,6 +101,20 @@ export var RGB_PVRTC_2BPPV1_Format = 2101;
 export var RGBA_PVRTC_4BPPV1_Format = 2102;
 export var RGBA_PVRTC_2BPPV1_Format = 2103;
 export var RGB_ETC1_Format = 2151;
+export var RGBA_ASTC_4x4_Format = 37808;
+export var RGBA_ASTC_5x4_Format = 37809;
+export var RGBA_ASTC_5x5_Format = 37810;
+export var RGBA_ASTC_6x5_Format = 37811;
+export var RGBA_ASTC_6x6_Format = 37812;
+export var RGBA_ASTC_8x5_Format = 37813;
+export var RGBA_ASTC_8x6_Format = 37814;
+export var RGBA_ASTC_8x8_Format = 37815;
+export var RGBA_ASTC_10x5_Format = 37816;
+export var RGBA_ASTC_10x6_Format = 37817;
+export var RGBA_ASTC_10x8_Format = 37818;
+export var RGBA_ASTC_10x10_Format = 37819;
+export var RGBA_ASTC_12x10_Format = 37820;
+export var RGBA_ASTC_12x12_Format = 37821;
 export var LoopOnce = 2200;
 export var LoopRepeat = 2201;
 export var LoopPingPong = 2202;
diff --git a/src/renderers/webgl/WebGLUtils.js b/src/renderers/webgl/WebGLUtils.js
index eff600232d6ff4..45906f05795f3e 100644
--- a/src/renderers/webgl/WebGLUtils.js
+++ b/src/renderers/webgl/WebGLUtils.js
@@ -107,6 +107,20 @@ function WebGLUtils( gl, extensions ) {
 
 		}
 
+		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
+			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
+			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
+			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
+			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {
+
+			extension = extensions.get( 'WEBGL_compressed_texture_astc' );
+
+			if ( extension !== null ) {
+				return p;
+			}
+
+		}
+
 		if ( p === MinEquation || p === MaxEquation ) {
 
 			extension = extensions.get( 'EXT_blend_minmax' );