尝试使用jogl加载和初始化着色器

Question

尝试初始化JOGL中的某些着色器。

任何想法为什么错误是空的？我检查它的大小，它看起来大于0，因为"Unknown"未打印。

vertexShaderProgram = gl.glCreateShader(GL2.GL_VERTEX_SHADER); 
fragmentShaderProgram = gl.glCreateShader(GL2.GL_FRAGMENT_SHADER); 
gl.glShaderSource(vertexShaderProgram, 1, vsrc, null, 0); 
gl.glCompileShader(vertexShaderProgram); 
gl.glShaderSource(fragmentShaderProgram, 1, fsrc, null, 0); 
gl.glCompileShader(fragmentShaderProgram); 
shaderprogram = gl.glCreateProgram(); 

gl.glAttachShader(shaderprogram, vertexShaderProgram); 
gl.glAttachShader(shaderprogram, fragmentShaderProgram); 
gl.glLinkProgram(shaderprogram); 
gl.glValidateProgram(shaderprogram); 
IntBuffer intBuffer = IntBuffer.allocate(1); 
gl.glGetProgramiv(shaderprogram, GL2.GL_LINK_STATUS, intBuffer); 

System.out.println("got link status"); 

if (intBuffer.get(0) != 1) { 
    gl.glGetProgramiv(shaderprogram, GL2.GL_INFO_LOG_LENGTH, intBuffer); 
    int size = intBuffer.get(0); 
    System.err.println("Program link error: "); 
    if (size > 0) { 
     ByteBuffer byteBuffer = ByteBuffer.allocate(size); 
     gl.glGetProgramInfoLog(shaderprogram, size, intBuffer, byteBuffer); 
     for (byte b: byteBuffer.array()) { 
      System.err.print((char) b); 
     } 
    } else { 
     System.out.println("Unknown"); 
    } 
    System.exit(1); 
} 

我得到控制台的错误，但不包含任何数据..

got link status 
Program link error: 

这是我的片段着色器..

< FILE :: fragmentShader.txt > 
uniform sampler2D fish_y_offset; 
uniform float alphavalue; 
void main() 
{ 
    gl_FragColor = texture2D(fish_y_offset, gl_TexCoord[0].st); 
    gl_FragColor.a=alphavalue; 

} 

，这是我的顶点着色器..

< FILE :: vertextShader.txt > 
uniform float waveTime; 
uniform float waveWidth; 
uniform float waveHeight; 
void main(void) 
{ 
    vec4 v = vec4(gl_Vertex); 
    v.y = 11 + sin(waveWidth * v.x + waveTime) * cos(waveWidth * v.z + waveTime) * waveHeight; 
    gl_Position = gl_ModelViewProjectionMatrix * v; 
    gl_TexCoord[0] = gl_MultiTexCoord0; 
} 

Answer 1

检查每个后面的着色器日志着色器编译。

https://www.khronos.org/opengles/sdk/docs/man/xhtml/glGetShaderInfoLog.xml