我試圖自己教Xcode,Objective-C,iOS應用程序開發和GLSL。 (我可能不太可取,; --)我一直在修改GLCameraRipple的例子,並且迄今取得了很大的成功!但是當我試圖創建一些新的頂點和片段着色器時,我今天陷入了困境。爲什麼Xcode不能識別這些着色器?
該示例附帶名爲「Shader.vsh」和「Shader.fsh」的着色器。我用File-> Duplicate來製作它們的副本,我分別稱它們爲「Reflection.vsh」和「Reflection.fsh」。問題是我無法讓Xcode識別新的着色器。此代碼,它加載了原有的頂點着色器,工作得很好:
vertShaderPathname = [[NSBundle mainBundle] pathForResource:@"Shader" ofType:@"vsh"];
NSLog(@"Original vertex shader should be here: %@", vertShaderPathname);
if (![self compileShader:&vertShader type:GL_VERTEX_SHADER file:vertShaderPathname]) {
NSLog(@"Failed to compile original vertex shader");
return NO;
}
但這個代碼,它試圖加載我新「Reflection.vsh」着色器失敗。具體來說,reflectVertShaderPathname字符串會返回值(null)。
reflectVertShaderPathname = [[NSBundle mainBundle] pathForResource:@"Reflection" ofType:@"vsh"];
NSLog(@"Reflection vertex shader should be here: %@", reflectVertShaderPathname);
if (![self compileShader:&reflectVertShader type:GL_VERTEX_SHADER file:reflectVertShaderPathname]) {
NSLog(@"Failed to compile reflection vertex shader");
return NO;
}
我該做些什麼才能做到這一點?我甚至不知道從哪裏開始:Xcode是否無法在爲iPad編譯此文件時將新着色器包含在NSBundle中?我必須調用什麼魔法巫術來說服Xcode加載我的新着色器? (或者我完全在錯誤的地方尋找答案?)有沒有其他人遇到過類似的問題?
檢查了「project.pbxproj」文件中的文本編輯器,我發現那裏的着色器被區別對待的一個部分:
/* Begin PBXResourcesBuildPhase section */
B66E3E2C13E9E79C00D2ACF0 /* Resources */ = {
isa = PBXResourcesBuildPhase;
buildActionMask = 2147483647;
files = (
B66E3E4713E9E79C00D2ACF0 /* Shader.fsh in Resources */,
B66E3E4913E9E79C00D2ACF0 /* Shader.vsh in Resources */,
B66E3E4F13E9E79C00D2ACF0 /* RippleViewController_iPhone.xib in Resources */,
B66E3E5213E9E79C00D2ACF0 /* RippleViewController_iPad.xib in Resources */,
B6388B2C141AB58300DA02FB /* Icon-72.png in Resources */,
B6388B2D141AB58300DA02FB /* Icon-Small-50.png in Resources */,
B6388B2E141AB58300DA02FB /* Icon-Small.png in Resources */,
B6388B2F141AB58300DA02FB /* [email protected] in Resources */,
B6388B30141AB58300DA02FB /* Icon.png in Resources */,
B6388B31141AB58300DA02FB /* [email protected] in Resources */,
C3E55C21175C49F9007C299D /* [email protected] in Resources */,
);
runOnlyForDeploymentPostprocessing = 0;
};
/* End PBXResourcesBuildPhase section */
/* Begin PBXSourcesBuildPhase section */
B66E3E2A13E9E79C00D2ACF0 /* Sources */ = {
isa = PBXSourcesBuildPhase;
buildActionMask = 2147483647;
files = (
B66E3E4113E9E79C00D2ACF0 /* main.m in Sources */,
B66E3E4513E9E79C00D2ACF0 /* AppDelegate.m in Sources */,
B66E3E4C13E9E79C00D2ACF0 /* RippleViewController.m in Sources */,
B6670DB413E9FD9F00AEF9EC /* RippleModel.m in Sources */,
C359BF4D175EA71C00D801B9 /* Reflection.fsh in Sources */,
C359BF4F175EA72A00D801B9 /* Reflection.vsh in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;
};
/* End PBXSourcesBuildPhase section */
因此,它看起來像「Shader.vsh」是一種叫做「資源「和」Reflection.vsh「在」源「中。我認爲這是問題的一部分。但是(a)這甚至意味着什麼,以及(b)我應該如何解決它?在文本編輯器中編輯project.pbxproj是否安全?
太棒了!出於好奇,我嘗試在emacs中編輯project.pbxproj,並將着色器從「Sources」移動到「Resources」中,實際上它工作正常。但是很高興知道在Xcode中有一個合適的方法可以做到這一點......下次我肯定會這樣做。非常感謝! – otherthings