我开始在 Qt 和着色器中使用 OpenGL(我有 OpenGL 经验,但还没有使用着色器)
I'm starting out on using OpenGL with Qt, and with Shaders (I have OpenGL experience, but not with shaders yet)
我正在学习本教程:http://releases.qt-project.org/learning/developerguides/qtopengltutorial/OpenGLTutorial.pdf(Qt5 OpenGL 官方教程).
I'm following this tutorial: http://releases.qt-project.org/learning/developerguides/qtopengltutorial/OpenGLTutorial.pdf (the official Qt5 OpenGL tutorial).
问题是,当我尝试运行我的程序时,出现黑屏并显示以下错误消息:
The problem is, that when I try to run my program, I get a black screen and the following error messages:
QGLShader::compile(Vertex): ERROR: 0:1: '' : version '130' is not supported
QGLShader::compile(Fragment): ERROR: 0:1: '' : version '130' is not supported
我的程序基于 QGLWidget
My program is based on a QGLWidget
通过在互联网上的一些浏览,我发现我需要使用 OpenGL 3.2 上下文,但 Qt 喜欢使用 OpenGL 2.x
With some browsing on the interwebs I found out that I need to use an OpenGL 3.2 context, but that Qt likes to use OpenGL 2.x
我的电脑:
那么,我怎样才能做到这一点?
So, how can I make this work?
我的版本是 3.2(通过 QGLFormat 设置),没有指定格式它使用 2.0
My version is 3.2 (set through QGLFormat), without a specified format it uses 2.0
fragmentShader.frag:
fragmentShader.frag:
#version 130
uniform vec4 color;
out vec4 fragColor;
void main(void)
{
fragColor = color;
}
vertexShader.vert:
vertexShader.vert:
#version 130
uniform mat4 mvpMatrix;
in vec4 vertex;
void main(void)
{
gl_Position = mvpMatrix * vertex;
}
错误(格式,OpenGL 3.2):
Errors (with format, OpenGL 3.2):
QGLShaderProgram: shader programs are not supported
QGLShaderProgram::uniformLocation( mvpMatrix ): shader program is not linked
The program has unexpectedly finished.
错误(无格式,OpenGL 2.0):
Errors (without format, OpenGL 2.0):
QGLShader::compile(Vertex): ERROR: 0:1: '' : version '130' is not supported
QGLShader::compile(Fragment): ERROR: 0:1: '' : version '130' is not supported
较新的 QOpenGLWidget
不支持任何带有 QGLFormat
的构造函数.相反,在您的 main.cpp
中,为所有 QOpenGLWidget
和 QOpenGLContext
指定默认的 QSurfaceFormat
如下:>
Newer QOpenGLWidget
doesn't support any constructor with QGLFormat
. Instead, in your main.cpp
, specify the default QSurfaceFormat
for all QOpenGLWidget
and QOpenGLContext
as following:
// main.cpp
QSurfaceFormat glFormat;
glFormat.setVersion(3, 3);
glFormat.setProfile(QSurfaceFormat::CoreProfile);
QSurfaceFormat::setDefaultFormat(glFormat);
现在你应该可以在你的着色器中使用类似 #version 330 core
的东西了.
Now you should be able to use something like #version 330 core
in your shader.
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