如何使用QOpenGLTexture构造立方体贴图纹理？

我想使用QOpenGLTexture构建一个立方体贴图纹理，使用6幅图像。我想我把它们放对了

我正在使用下面的代码来构造cubemap

const QImage posx = QImage(":/images/posx.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);
const QImage posy = QImage(":/images/posy.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);
const QImage posz = QImage(":/images/posz.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);
const QImage negx = QImage(":/images/negx.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);
const QImage negy = QImage(":/images/negy.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);
const QImage negz = QImage(":/images/negz.jpg").mirrored().convertToFormat(QImage::Format_RGBA8888);

d->environment = new QOpenGLTexture(QOpenGLTexture::TargetCubeMap);
d->environment->create();
d->environment->setSize(posx.width(), posx.height(), posx.depth());
d->environment->setFormat(QOpenGLTexture::RGBA8_UNorm);
d->environment->allocateStorage();
d->environment->setData(0, 0, QOpenGLTexture::CubeMapPositiveX,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)posx.constBits(), 0);
d->environment->setData(0, 0, QOpenGLTexture::CubeMapPositiveY,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)posy.constBits(), 0);
d->environment->setData(0, 0, QOpenGLTexture::CubeMapPositiveZ,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)posz.constBits(), 0);
d->environment->setData(0, 0, QOpenGLTexture::CubeMapNegativeX,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)negx.constBits(), 0);
d->environment->setData(0, 0, QOpenGLTexture::CubeMapNegativeY,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)negy.constBits(), 0);
d->environment->setData(0, 0, QOpenGLTexture::CubeMapNegativeZ,
                        QOpenGLTexture::RGBA, QOpenGLTexture::UInt8,
                        (const void*)negz.constBits(), 0);
d->environment->setWrapMode(QOpenGLTexture::ClampToEdge);
d->environment->setMinificationFilter(QOpenGLTexture::LinearMipMapLinear);
d->environment->setMagnificationFilter(QOpenGLTexture::LinearMipMapLinear);

然后在paintGL（）期间绑定环境纹理，如下所示

.....
d->environment->bind(0);
d->shader->setUniformValue("qt_Environment", 0);

const int nrIndicies = d->torusResolution * d->tubeResolution * 6;
glDrawElements(GL_TRIANGLES, nrIndicies, GL_UNSIGNED_INT, (void*)0);
.....

....
varying vec3 v_TexCoord;
....

void main(void)
{
    ....
    v_TexCoord = normalize(v_Normal + v_Position);
    ....
}

.....
varying vec3 v_TexCoord;
uniform samplerCube qt_Environment;
.....

vec4 evaluateColor(in vec3 normal, in vec3 texCoord)
{
    vec3 finalColor ....
    .....
    .....

    finalColor += textureCube(qt_Environment, texCoord).rgb;    
    return vec4( finalColor, c_one );
}

void main(void)
{
    gl_FragColor = evaluateColor(v_Normal, v_TexCoord);
}

顶点着色器片段如下所示

.....
d->environment->bind(0);
d->shader->setUniformValue("qt_Environment", 0);

const int nrIndicies = d->torusResolution * d->tubeResolution * 6;
glDrawElements(GL_TRIANGLES, nrIndicies, GL_UNSIGNED_INT, (void*)0);
.....

....
varying vec3 v_TexCoord;
....

void main(void)
{
    ....
    v_TexCoord = normalize(v_Normal + v_Position);
    ....
}

.....
varying vec3 v_TexCoord;
uniform samplerCube qt_Environment;
.....

vec4 evaluateColor(in vec3 normal, in vec3 texCoord)
{
    vec3 finalColor ....
    .....
    .....

    finalColor += textureCube(qt_Environment, texCoord).rgb;    
    return vec4( finalColor, c_one );
}

void main(void)
{
    gl_FragColor = evaluateColor(v_Normal, v_TexCoord);
}

片段着色器片段如下所示

.....
d->environment->bind(0);
d->shader->setUniformValue("qt_Environment", 0);

const int nrIndicies = d->torusResolution * d->tubeResolution * 6;
glDrawElements(GL_TRIANGLES, nrIndicies, GL_UNSIGNED_INT, (void*)0);
.....

....
varying vec3 v_TexCoord;
....

void main(void)
{
    ....
    v_TexCoord = normalize(v_Normal + v_Position);
    ....
}

.....
varying vec3 v_TexCoord;
uniform samplerCube qt_Environment;
.....

vec4 evaluateColor(in vec3 normal, in vec3 texCoord)
{
    vec3 finalColor ....
    .....
    .....

    finalColor += textureCube(qt_Environment, texCoord).rgb;    
    return vec4( finalColor, c_one );
}

void main(void)
{
    gl_FragColor = evaluateColor(v_Normal, v_TexCoord);
}

我还有另一部分代码，它在skybox上呈现立方体贴图。虽然我能够在skybox上投影6个图像并正确渲染，但我无法在场景中渲染圆环体对象上的反射

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有人能帮忙吗？

编辑：这个问题现在已经解决了

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在将其应用于圆环体之前，我必须在环境纹理上调用generateMipMap（）。

指出您自己找到答案的正确方法是将答案作为答案发布。也就是说，使用底部的Post应答框。回答你自己的问题没关系。@Nicolas:好的。谢谢你指出。这是我的第一个问题，我会从中变得更聪明：-）