Example usage for android.opengl GLES20 glDetachShader

Introduction

In this page you can find the example usage for android.opengl GLES20 glDetachShader.

Prototype

public static native void glDetachShader(int program, int shader);

Source Link

Usage

From source file:Main.java

public static int createProgram(String vertSrc, String fragSrc, String[] attributeNames, int[] attributeBinding,
        String[] uniformNames, int[] uniformBinding) {

    int program = GLES20.glCreateProgram();

    int status = 1;
    int[] vertSh = new int[1];
    int[] fragSh = new int[1];
    status *= compileShader(GLES20.GL_VERTEX_SHADER, vertSrc, vertSh);
    status *= compileShader(GLES20.GL_FRAGMENT_SHADER, fragSrc, fragSh);
    checkGLError("Compiling shaders");

    GLES20.glAttachShader(program, vertSh[0]);
    checkGLError("Attach shader");
    GLES20.glAttachShader(program, fragSh[0]);
    checkGLError("Attach shader fragment");

    //Bind attributes
    for (int i = 0; i < attributeNames.length; i++) {
        GLES20.glBindAttribLocation(program, attributeBinding[i], attributeNames[i]);
        checkGLError("Bind attribute: " + attributeNames[i]);
    }/*from  w  w w. j a v a2  s . co m*/
    status *= linkProgram(program);

    status *= validateProgram(program);

    //location of uniforms
    if (status > 0) {
        for (int i = 0; i < uniformNames.length; i++) {
            //         if (uniformsLocations.at(i).first.length()) {
            int loc = GLES20.glGetUniformLocation(program, uniformNames[i]);
            checkGLError("glGetUniformLocation - " + uniformNames[i]);
            if (loc < 0)
                Log.e(TAG, "Bad uniform " + uniformNames[i]);
            uniformBinding[i] = loc;
        }
    } else {
        GLES20.glDeleteProgram(program);
        program = 0;
    }

    if (vertSh[0] > 0) {
        GLES20.glDeleteShader(vertSh[0]);
        GLES20.glDetachShader(program, vertSh[0]);
    }
    if (fragSh[0] > 0) {
        GLES20.glDeleteShader(fragSh[0]);
        GLES20.glDetachShader(program, fragSh[0]);
    }
    checkGLError("Shaders deleted");
    return program;
}

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