void Shader::Compile()

in agdk/agdktunnel/app/src/main/cpp/shader.cpp [61:128]
61 lines of code
9 McCabe index (conditional complexity)

void Shader::Compile() {
    const char *vsrc = 0, *fsrc = 0;
    GLint status = 0;

    ALOGI("Compiling shader.");
    ALOGI("Shader name: %s", GetShaderName());

    vsrc = GetVertShaderSource();
    fsrc = GetFragShaderSource();

    mVertShaderH = glCreateShader(GL_VERTEX_SHADER);
    mFragShaderH = glCreateShader(GL_FRAGMENT_SHADER);
    if (!mVertShaderH || !mFragShaderH) {
        ALOGE("*** Failed to create shader.");
        ABORT_GAME;
    }
    glShaderSource(mVertShaderH, 1, &vsrc, NULL);
    glCompileShader(mVertShaderH);
    glGetShaderiv(mVertShaderH, GL_COMPILE_STATUS, &status);
    if (status == 0) {
        ALOGE("*** Vertex shader compilation failed.");
        _printShaderLog(mVertShaderH);
        ABORT_GAME;
    }
    ALOGI("Vertex shader compilation succeeded.");

    glShaderSource(mFragShaderH, 1, &fsrc, NULL);
    glCompileShader(mFragShaderH);
    glGetShaderiv(mFragShaderH, GL_COMPILE_STATUS, &status);
    if (status == 0) {
        ALOGE("*** Fragment shader compilation failed, %d", status);
        _printShaderLog(mFragShaderH);
        ABORT_GAME;
    }
    ALOGI("Fragment shader compilation succeeded.");

    mProgramH = glCreateProgram();
    if (!mProgramH) {
        ALOGE("*** Failed to create program");
        _printProgramLog(mProgramH);
        ABORT_GAME;
    }

    glAttachShader(mProgramH, mVertShaderH);
    glAttachShader(mProgramH, mFragShaderH);
    glLinkProgram(mProgramH);
    glGetProgramiv(mProgramH, GL_LINK_STATUS, &status);
    if (status == 0) {
        ALOGE("*** Shader program link failed, %d", status);
        _printProgramLog(mProgramH);
        ABORT_GAME;
    }
    ALOGI("Program linking succeeded.");

    glUseProgram(mProgramH);
    mMVPMatrixLoc = glGetUniformLocation(mProgramH, "u_MVP");
    if (mMVPMatrixLoc < 0) {
        ALOGE("*** Couldn't get shader's u_MVP matrix location from shader.");
        ABORT_GAME;
    }
    mPositionAttribLoc = glGetAttribLocation(mProgramH, "a_Position");
    if (mPositionAttribLoc < 0) {
        ALOGE("*** Couldn't get shader's a_Position attribute location.");
        ABORT_GAME;
    }
    ALOGI("Shader compilation/linking successful.");
    glUseProgram(0);
}