Coco2d 2.1和Xcode 7 iOS 9 crash ccShader
Coco2d 2.1和Xcode 7 iOS 9 crash ccShader
提问于 2015-06-16 17:44:57
我测试了Xcode7，但我的cocos2d 2.1游戏在模拟器或设备上崩溃了：
ccShader_PositionColorLenghtTexture_frag.h
2015-06-15 22:36:13.319 NanoWar[18789:456971] cocos2d: ERROR: 0:12: '' : syntax error: #extension must always be before any non-preprocessor tokens和
cocos2d: ERROR: 0:26: Invalid call of undeclared identifier 'fwidth'这个类使游戏崩溃
#extension GL_OES_standard_derivatives : enable
#ifdef GL_ES
varying mediump vec4 v_color;
varying mediump vec2 v_texcoord;
#else
varying vec4 v_color;
varying vec2 v_texcoord;
#endif
void main()
{
#ifdef GL_OES_standard_derivatives
#if defined GL_OES_standard_derivatives
gl_FragColor = v_color*smoothstep(0.0, length(fwidth(v_texcoord)), 1.0 - length(v_texcoord));
#else
gl_FragColor = v_color*step(0.0, 1.0 - length(v_texcoord));
#endif
#endif
}回答 4
Stack Overflow用户
回答已采纳
发布于 2015-07-02 08:23:56
我是forum.cocos2d-objc.org上的"rae“，我不妨把我的答案也写在这里，因为所有的道路都通向StackOverflow。:-)
如果您使用的是旧版本的Cocos 2D，这可能会有所帮助。我编辑了CCGLProgram.m以更改-(BOOL)compileShader:方法的开头，如下所示：
#define EXTENSION_STRING "#extension GL_OES_standard_derivatives : enable"
static NSString * g_extensionStr = @EXTENSION_STRING;
- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type byteArray:(const GLchar *)source
{
GLint status;
if (!source)
return NO;
// BEGIN workaround for Xcode 7 bug
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];
}
const GLchar *sources[] = {
(hasExtension ? EXTENSION_STRING "\n" : ""),
#ifdef __CC_PLATFORM_IOS
(type == GL_VERTEX_SHADER ? "precision highp float;\n" : "precision mediump float;\n"),
#endif
"uniform mat4 CC_PMatrix;\n"
"uniform mat4 CC_MVMatrix;\n"
"uniform mat4 CC_MVPMatrix;\n"
"uniform vec4 CC_Time;\n"
"uniform vec4 CC_SinTime;\n"
"uniform vec4 CC_CosTime;\n"
"uniform vec4 CC_Random01;\n"
"//CC INCLUDES END\n\n",
source,
};
// END workaround for Xcode 7 bug这是一个技巧，但它适用于Xcode7beta2。希望这对谷歌搜索的人有帮助。
里德
Stack Overflow用户
发布于 2015-10-12 07:16:13
被接受的答案对我不起作用，但这个确实起作用了。
转到名为CCGLProgram.m的文件
替换名为- (BOOL)compileShader:(CLuint *)shader type(GLenum)typebyteArray:(const GLchar *)source的整个方法
使用此方法
#define _IPHONE9_0 [[[UIDevice currentDevice] systemVersion] floatValue] == 9.000
#define EXTENSION_STRING "#extension GL_OES_standard_derivatives : enable"
static NSString * g_extensionStr = @EXTENSION_STRING;
- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type byteArray:(const GLchar *)source
{
GLint status;
if (!source)
return NO;
#ifdef _IPHONE9_0
NSLog(@"USING IOS9 shaders");
// BEGIN workaround for Xcode 7 ios9----
BOOL hasExtension = NO;
NSString *sourceStr = [NSString stringWithUTF8String:source];
if([sourceStr containsString:g_extensionStr]) {
hasExtension = YES;
NSArray *strs = [sourceStr componentsSeparatedByString:g_extensionStr];
assert(strs.count == 2);
sourceStr = [strs componentsJoinedByString:@"\n"];
source = (GLchar *)[sourceStr UTF8String];
}
const GLchar *sources[] = {
(hasExtension ? EXTENSION_STRING "\n" : ""),
#ifdef __CC_PLATFORM_IOS
(type == GL_VERTEX_SHADER ? "precision highp float;\n" : "precision mediump float;\n"),
#endif
"uniform mat4 CC_PMatrix;\n"
"uniform mat4 CC_MVMatrix;\n"
"uniform mat4 CC_MVPMatrix;\n"
"uniform vec4 CC_Time;\n"
"uniform vec4 CC_SinTime;\n"
"uniform vec4 CC_CosTime;\n"
"uniform vec4 CC_Random01;\n"
"//CC INCLUDES END\n\n",
source,
};
#else
NSLog(@"USING IOS8 shaders");
const GLchar *sources[] = {
#ifdef __CC_PLATFORM_IOS
(type == GL_VERTEX_SHADER ? "precision highp float;\n" : "precision mediump float;\n"),
#endif
"uniform mat4 CC_PMatrix;\n"
"uniform mat4 CC_MVMatrix;\n"
"uniform mat4 CC_MVPMatrix;\n"
"uniform vec4 CC_Time;\n"
"uniform vec4 CC_SinTime;\n"
"uniform vec4 CC_CosTime;\n"
"uniform vec4 CC_Random01;\n"
"//CC INCLUDES END\n\n",
source,
};
#endif
*shader = glCreateShader(type);
glShaderSource(*shader, sizeof(sources)/sizeof(*sources), sources, NULL);
glCompileShader(*shader);
glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);
if( ! status ) {
GLsizei length;
glGetShaderiv(*shader, GL_SHADER_SOURCE_LENGTH, &length);
GLchar src[length];
glGetShaderSource(*shader, length, NULL, src);
CCLOG(@"cocos2d: ERROR: Failed to compile shader:\n%s", src);
if( type == GL_VERTEX_SHADER )
CCLOG(@"cocos2d: %@", [self vertexShaderLog] );
else
CCLOG(@"cocos2d: %@", [self fragmentShaderLog] );
abort();
}
return ( status == GL_TRUE );
}Stack Overflow用户
发布于 2015-09-19 04:08:09
使用上面接受的答案，但对于较新版本的cocos2d：
在CCShader.m中替换行
static GLint
CompileShaderSources(GLenum type, NSArray *sources)
{使用
#define EXTENSION_STRING "#extension GL_OES_standard_derivatives : enable"
static NSString * g_extensionStr = @EXTENSION_STRING;
static NSArray * PrependExtensionIfNeeded(NSArray *sources)
{
NSMutableArray *mutableSources = [NSMutableArray array];
BOOL hasExtension = NO;
for (NSString *source in sources)
{
NSString *newSource = [source copy];
if([source rangeOfString:g_extensionStr].location != NSNotFound)
{
hasExtension = YES;
NSArray *strs = [source componentsSeparatedByString:g_extensionStr];
newSource = [strs componentsJoinedByString:@"\n"];
}
[mutableSources addObject:newSource];
}
if (hasExtension)
{
NSMutableString *firstSource = [NSMutableString stringWithString:[mutableSources firstObject]];
[firstSource insertString:[NSString stringWithFormat:@"%@\n", g_extensionStr] atIndex:0];
[mutableSources replaceObjectAtIndex:0 withObject:firstSource];
}
return mutableSources;
}
static GLint
CompileShaderSources(GLenum type, NSArray *sources)
{
sources = PrependExtensionIfNeeded(sources);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/30864055
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