Qt Opengl :The shader uses varing xxx，but previous shader does not write to it. Out

dsn3S

于 2021-11-06 11:14:07 发布

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文章标签： qt 开发语言 opengl

本文链接：https://blog.youkuaiyun.com/dsn3S/article/details/121175931

在使用QT5.12和QT Creator 4.8进行OpenGL开发时，遇到链接错误，提示着色器程序未链接且varying变量未被前一个着色器写入。解决办法是确保顶点着色器的Out变量与片段着色器的In变量匹配，以避免资源错误。

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1.版本介绍

（1）QT版本：QT5.12 +QT Creator 4.8
（2）编译器版本：windows msvc2017 32bit / 64bit

2.问题描述

QOpenGLShaderProgram::uniformLocation(model): shader program is not linked
QOpenGLShaderProgram::uniformLocation(view): shader program is not linked
QOpenGLShaderProgram::uniformLocation(projection): shader program is not linked
QOpenGLShaderProgram::uniformLocation(lightPos): shader program is not linked
QOpenGLShaderProgram::uniformLocation(lightAmbient): shader program is not linked
QOpenGLShaderProgram::uniformLocation(lightDiffuse): shader program is not linked
QOpenGLShaderProgram::uniformLocation(matAmbient): shader program is not linked
QOpenGLShaderProgram::uniformLocation(matDiffuse): shader program is not linked

QOpenGLShader:: link: The shader uses varying xxxx, but previous shader does not write to it.
Out of resource error.