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我試圖用草紋理來覆蓋我的地形(它由高度貼圖製成),但它不能正常工作。我甚至無法在簡單的GL_QUAD上獲得紋理,結果是多色網。紋理openGl。 qt
void GLWidget::initializeGL()
{
//
glEnable(GL_TEXTURE_2D);
//
}
在QGLWidget來繪圖我叫openTextureImg()的
openTextureImg();
代碼:
bool GLWidget::openTextureImg()
{
QString fileName = QFileDialog::getOpenFileName(this,tr("Open Image"),QDir::homePath(), tr("Image Files (*.png *.tga *.bmp)"));
QImage textureImg;
if (!fileName.isEmpty())
{
textureImg = QImage(fileName, "PNG");
qDebug()<<"image loaded";
textureImg = QGLWidget::convertToGLFormat(textureImg);
glGenTextures(1, &texHandle);
glBindTexture(GL_TEXTURE_2D, texHandle);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, textureImg.width(), textureImg.height(), 0, GL_RGB,
GL_UNSIGNED_BYTE, textureImg.bits());
//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, 0);
return true;
}
return false;
}
在這裏,我想畫一個四:
void GLWidget::drawRect()
{
glColor3f(0.5,0.5,1.0);
glBindTexture(GL_TEXTURE_2D,texHandle);
glBegin(GL_QUADS);
glTexCoord2d(0.0,0.0); glVertex2d(0.0,0.0);
glTexCoord2d(1.0,0.0); glVertex2d(1000.0,0.0);
glTexCoord2d(1.0,1.0); glVertex2d(1000.0,1000.0);
glTexCoord2d(0.0,1.0); glVertex2d(0.0,1000.0);
glEnd();
}
上午什麼我做錯了。
非常非常非常感謝。 –