[英]Unable to create shader program OpenGL LWJGL3
我无法创建着色器程序以绑定到openGL的程序ID。 我的ShaderProgram类如下所示:
public abstract class ShaderProgram {
private int programID;
private int vertexShaderID;
private int fragmentShaderID;
public ShaderProgram(String vertexFile, String fragmentFile) { // Constructor takes the file names for both shaders and loads them into memory
// --- Vertex shader does points in 3d space --- fragment shader does colour ---
if (programID == -1) { // Error checking for shader program
programID = GL20.glCreateProgram();
}
if (programID == 0) {
System.out.println("Could not create shader program");
System.exit(-1);
}
vertexShaderID = loadShader(vertexFile, GL20.GL_VERTEX_SHADER);
fragmentShaderID = loadShader(fragmentFile, GL20.GL_FRAGMENT_SHADER);
GL20.glAttachShader(programID, vertexShaderID); // Bind shader to programID
GL20.glAttachShader(programID, fragmentShaderID);
bindAttributes();
GL20.glLinkProgram(programID);
GL20.glValidateProgram(programID);
}
protected abstract void bindAttributes();
protected void bindAttribute(String variableName, int attribute) { // Takes vao to bind to vertex shader
GL20.glBindAttribLocation(programID, attribute, variableName);
}
public void start() { // Start shader program bound to programID
GL20.glUseProgram(programID);
}
public void stop() { // Stop shader program
GL20.glUseProgram(0);
}
public void cleanUp() { // Unbind shaderID's and delete program from memory
stop();
GL20.glDetachShader(programID, vertexShaderID);
GL20.glDetachShader(programID, fragmentShaderID);
GL20.glDeleteShader(vertexShaderID);
GL20.glDeleteShader(fragmentShaderID);
GL20.glDeleteProgram(programID);
}
private int loadShader(String file, int type) { // Read shader file input by filename and shader type
// and store it in a string buffer
StringBuilder shaderSource = new StringBuilder();
InputStream in = Class.class.getResourceAsStream(file);
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
try {
while((line = reader.readLine()) != null) {
shaderSource.append(line).append("//\n");
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
System.err.println("Could not Load Shader File");
System.exit(-1);
}
int shaderID = GL20.glCreateShader(type);
GL20.glShaderSource(shaderID, shaderSource); // Creates shader by file and loads it into a new id
GL20.glCompileShader(shaderID);
if (GL20.glGetShaderi(shaderID, GL20.GL_COMPILE_STATUS) == GL11.GL_FALSE) { // Get gl compile status of shader
System.out.println(GL20.glGetShaderInfoLog(shaderID, 1000)); // In case of error, force close and print what went wrong
System.err.println("Could not compile shader!");
System.exit(-1);
}
return shaderID;
}
}
它返回一个Java堆错误,如下所示: error
我已将所有随附代码的链接附加到我的github存储库。 我相信glfw会处理不当。 所有引擎文件都在renderEngine的边界包中。 提前致谢! GitHub KR0N05
我已经解决了问题。 @BDL是正确的,在调用着色器创建之前,我没有在render.prepare中加载上下文。 谢谢!
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