Fix SMAA shader for WebGL2

mrdoob · Jun 22, 2019 · d1be58e · d1be58e
1 parent 3dfedcd
commit d1be58e
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Showing 2 changed files with 4 additions and 0 deletions.
diff --git a/examples/js/shaders/SMAAShader.js b/examples/js/shaders/SMAAShader.js
@@ -180,9 +180,11 @@ THREE.SMAAWeightsShader = {
 		"varying vec4 vOffset[3];",
 		"varying vec2 vPixcoord;",
 
+		"#if __VERSION__ == 100",
 		"vec2 round( vec2 x ) {",
 			"return sign( x ) * floor( abs( x ) + 0.5 );",
 		"}",
+		"#endif",
 
 		"float SMAASearchLength( sampler2D searchTex, vec2 e, float bias, float scale ) {",
 			// Not required if searchTex accesses are set to point:

diff --git a/examples/jsm/shaders/SMAAShader.js b/examples/jsm/shaders/SMAAShader.js
@@ -184,9 +184,11 @@ var SMAAWeightsShader = {
 		"varying vec4 vOffset[3];",
 		"varying vec2 vPixcoord;",
 
+		"#if __VERSION__ == 100",
 		"vec2 round( vec2 x ) {",
 			"return sign( x ) * floor( abs( x ) + 0.5 );",
 		"}",
+		"#endif",
 
 		"float SMAASearchLength( sampler2D searchTex, vec2 e, float bias, float scale ) {",
 			// Not required if searchTex accesses are set to point: