cocos2d v2.1 で実行エラー

cocos2d 2.1を Xcode 7.3 でビルドし実行するとエラーが出ます。

環境

cocos2d for iPhone 2.1
Xcode 7.3

状況

実行時にクラッシュします。

cocos2d: ERROR: Failed to compile shader
cocos2d: ERROR: 0:12: '' : syntax error: #extension must always be before any non-preprocessor tokens

対応

CCGLProgram.m の (BOOL)compileShader メソッドを編集します。

// ADD Start
#define EXTENSION_STRING "#extension GL_OES_standard_derivatives : enable"
static NSString * g_extensionStr = @EXTENSION_STRING;
// ADD End
- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type byteArray:(const GLchar *)source
{
    GLint status;
 
    if (!source)
        return NO;
    
// ADD Start
    BOOL hasExtension = NO;
    NSString *sourceStr = [NSString stringWithUTF8String:source];
    if([sourceStr rangeOfString:g_extensionStr].location != NSNotFound) {
        hasExtension = YES;
        NSArray *strs = [sourceStr componentsSeparatedByString:g_extensionStr];
        assert(strs.count == 2);
        sourceStr = [strs componentsJoinedByString:@"\n"];
        source = (GLchar *)[sourceStr UTF8String];
    }
// ADD End
 
const GLchar *sources[] = { 
// ADD Start
    (hasExtension ? EXTENSION_STRING "\n" : ""),
// ADD End
#ifdef __CC_PLATFORM_IOS

参考

https://stackoverflow.com/questions/30864055

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