GLSL链接错误

Question

我目前正在试图编译GLSL着色器时遇到的错误让我的头发脱落,我已成功设法编译两个着色器,但是当涉及到链接它们时,我得到一个错误.没有输出,但链接失败.

这是编译+链接代码:

GLuint program = NULL;
GLint compile_ok = GL_FALSE, link_ok = GL_FALSE;

GLuint vs = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(vs, 1, &vertCont, NULL);
glCompileShader(vs);
glGetShaderiv(vs, GL_COMPILE_STATUS, &compile_ok);
char logBuf[1024];
int len;
if (0 == compile_ok)
{
    glGetShaderInfoLog(vs, sizeof(logBuf), &len, logBuf);
    LogMgr::logMessage(LogMgr::CRITICAL, "Error in vertex shader\n", logBuf);
    return false;
}

GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(fs, 1, &fragCont, NULL);
glCompileShader(fs);
glGetShaderiv(fs, GL_COMPILE_STATUS, &compile_ok);
if (!compile_ok) 
{
    glGetShaderInfoLog(vs, sizeof(logBuf), &len, logBuf);
    LogMgr::logMessage(LogMgr::CRITICAL, "Error in fragment shader", logBuf);
    return false;
}

glAttachShader(program, vs);
glAttachShader(program, fs);
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &link_ok);
if (!link_ok) 
{
    glGetShaderInfoLog(vs, sizeof(logBuf), &len, logBuf);
    LogMgr::logMessage(LogMgr::CRITICAL, "Could not link basic shaders!", logBuf);
    return false;
}
return program;

这是顶点着色器:

#version 330

layout(location = 0) in vec4 position;
void main()
{
    gl_Position = position;
}

片段着色器:

#version 330

out vec4 outputColor;
void main()
{
   outputColor = vec4(1.0f, 0.0f, 1.0f, 1.0f);
}

有线索吗？

Answer 1

你对getShaderInfoLog的调用是错误的.您总是检查顶点着色器的编译日志.这解释了为什么您没有看到任何错误消息.这就是你复制和粘贴代码所得到的;)

对于片段着色器,它应该是:

glGetShaderInfoLog(fs, sizeof(logBuf), &len, logBuf);

对于链接状态:

glGetProgramInfoLog(program, sizeof(logBuf), &len, logBuf);