我正在尝试为学校项目制作游戏,一切正常,除了当我构建为 jar 时,它不会渲染任何内容,并且我确定这是因为它找不到着色器文件。这是读取文件的代码。
public static int loadShader(String filepath, int type){
StringBuilder result = new StringBuilder();
try{
BufferedReader bufferedReader = new BufferedReader(new FileReader(filepath));
String buffer = "";
while((buffer = bufferedReader.readLine()) != null)
result.append(buffer + "\n");
bufferedReader.close();
}catch (IOException e1){
e1.printStackTrace();
}
int shaderID = glCreateShader(type);
glShaderSource(shaderID, result.toString());
glCompileShader(shaderID);
if(glGetShaderi(shaderID, GL_COMPILE_STATUS) == GL_FALSE){
System.err.println(glGetShaderInfoLog(shaderID, 500));
System.err.println("Could not compile shader.");
System.err.println(-1);
}
return shaderID;
}
这是我需要放置文件路径的地方
public static void loadAll(){
shader1 = new Shader("src/com/myGame/shaders/vertex.shader", "src/com/myGame/shaders/fragment.shader");
shader3 = new Shader("src/com/myGame/shaders/vertex3.shader", "src/com/myGame/shaders/fragment3.shader");
}
这是 Shader 类
public class Shader {
private int programID;
private int vertexShaderID;
private int fragmentShaderID;
public Shader(String vertexFile, String fragmentFile){
vertexShaderID = loadShader(vertexFile, GL_VERTEX_SHADER);
fragmentShaderID = loadShader(fragmentFile, GL_FRAGMENT_SHADER);
programID = glCreateProgram();
glAttachShader(programID, vertexShaderID);
glAttachShader(programID, fragmentShaderID);
glLinkProgram(programID);
glValidateProgram(programID);
}
public void start(){
glUseProgram(programID);
}
public void stop(){
glUseProgram(0);
}
public int getID(){
return this.programID;
}
public int getUniform(String name){
int result = glGetUniformLocation(programID, name);
if(result == -1)
System.err.println("Could not find uniform variable'" + name + "'!");
return glGetUniformLocation(programID, name);
}
public void setUniform3f(String name, Vector3f vector) {
glUniform3f(getUniform(name), vector.x, vector.y, vector.z);
}
}
当我在 IntelliJ 中编译时,这一切都有效,但当我编译、构建并作为 jar 运行它时,这一切都不起作用。当我尝试从命令提示符将其作为 jar 运行时,它表示无法找出放入着色器类中的 setUniform3f 方法中的变量 pos 。
编辑:我正在尝试使用InputStream
,这就是我所拥有的,但它遇到了空指针异常。
Exception in thread "Bot Fighting" java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:72)
at com.myGame.utils.Utilities.loadShader(Utilities.java:22)
at com.myGame.graphicsEngine.Shader.<init>(Shader.java:20)
at com.myGame.graphicsEngine.ShaderManager.loadAll(ShaderManager.java:20)
at com.myGame.gameEngine.Level.<init>(Level.java:21)
at com.myGame.main.BotMain.init(BotMain.java:50)
at com.myGame.main.BotMain.run(BotMain.java:58)
at java.lang.Thread.run(Thread.java:745)
这是我的带有 InputStream
的代码
public static int loadShader(String filepath, int type){
StringBuilder result = new StringBuilder();
InputStream in = ClassLoader.getSystemResourceAsStream(filepath);
try{
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
String buffer = "";
while((buffer = bufferedReader.readLine()) != null)
result.append(buffer + "\n");
bufferedReader.close();
}catch (IOException e1){
e1.printStackTrace();
}
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
int shaderID = glCreateShader(type);
glShaderSource(shaderID, result.toString());
glCompileShader(shaderID);
if(glGetShaderi(shaderID, GL_COMPILE_STATUS) == GL_FALSE){
System.err.println(glGetShaderInfoLog(shaderID, 500));
System.err.println("Could not compile shader.");
System.err.println(-1);
}
return shaderID;
我显然没有使用这个权利,那么我该如何使用这个呢?
最佳答案
试试这个:
public static void loadAll(){
shader1 = new Shader("com/myGame/shaders/vertex.shader", "com/myGame/shaders/fragment.shader");
shader3 = new Shader("com/myGame/shaders/vertex3.shader", "com/myGame/shaders/fragment3.shader");
}
没有“src/”
如果它不起作用,请使用这个:
InputStreamReader(cls.getResourceAsStream(name))
哪里Class<?> cls
是与着色器位于同一包中的某个类,并且 String name
是文件名,类似于:
public static int loadShader(Class<?> cls, String name, int type){
StringBuilder result = new StringBuilder();
InputStream in = ClassLoader.getSystemResourceAsStream(cls, name);
try{
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
String buffer = "";
while((buffer = bufferedReader.readLine()) != null)
result.append(buffer + "\n");
bufferedReader.close();
}catch (IOException e1){
e1.printStackTrace();
}
你打电话loadShader(com.myGame.shaders.Shader.class, "vertex.shader", GL_VERTEX_SHADER)
。
问题是,您需要使用与文件位于同一包中的类。
希望对你有帮助
关于java - 构建为 jar 时读取 .shader 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37353499/