Merge pull request #998 from thayerandrews/develop

CCEffects - Fix handling of nil environment nodes

Author: vlidholt

cocos2d/CCEffectGlass.m

@@ -233,7 +233,7 @@ -(void)buildRenderPasses
 
 
         // Get the transform from the affected node's local coordinates to the environment node.
-        GLKMatrix4 effectNodeToRefractEnvNode = CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.refractionEnvironment, nil);
+        GLKMatrix4 effectNodeToRefractEnvNode = weakSelf.refractionEnvironment ? CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.refractionEnvironment, nil) : GLKMatrix4Identity;
 
         // Concatenate the node to environment transform with the environment node to environment texture transform.
         // The result takes us from the affected node's coordinates to the environment's texture coordinates. We need
@@ -256,7 +256,7 @@ -(void)buildRenderPasses
 
 
         // Get the transform from the affected node's local coordinates to the environment node.
-        GLKMatrix4 effectNodeToReflectEnvNode = CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.reflectionEnvironment, nil);
+        GLKMatrix4 effectNodeToReflectEnvNode = weakSelf.reflectionEnvironment ? CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.reflectionEnvironment, nil) : GLKMatrix4Identity;
 
         // Concatenate the node to environment transform with the environment node to environment texture transform.
         // The result takes us from the affected node's coordinates to the environment's texture coordinates. We need

cocos2d/CCEffectReflection.m

@@ -200,7 +200,7 @@ -(void)buildRenderPasses
 
 
         // Get the transform from the affected node's local coordinates to the environment node.
-        GLKMatrix4 effectNodeToReflectEnvNode = CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.environment, nil);
+        GLKMatrix4 effectNodeToReflectEnvNode = weakSelf.environment ? CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.environment, nil) : GLKMatrix4Identity;
 
         // Concatenate the node to environment transform with the environment node to environment texture transform.
         // The result takes us from the affected node's coordinates to the environment's texture coordinates. We need

cocos2d/CCEffectRefraction.m

@@ -162,7 +162,7 @@ -(void)buildRenderPasses
         pass.shaderUniforms[weakSelf.uniformTranslationTable[@"u_envMap"]] = weakSelf.environment.texture ?: [CCTexture none];
 
         // Get the transform from the affected node's local coordinates to the environment node.
-        GLKMatrix4 effectNodeToRefractEnvNode = CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.environment, nil);
+        GLKMatrix4 effectNodeToRefractEnvNode = weakSelf.environment ? CCEffectUtilsTransformFromNodeToNode(pass.node, weakSelf.environment, nil) : GLKMatrix4Identity;
 
         // Concatenate the node to environment transform with the environment node to environment texture transform.
         // The result takes us from the affected node's coordinates to the environment's texture coordinates. We need