本文整理汇总了C++中GLContext::genFBO方法的典型用法代码示例。如果您正苦于以下问题：C++ GLContext::genFBO方法的具体用法？C++ GLContext::genFBO怎么用？C++ GLContext::genFBO使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GLContext的用法示例。
在下文中一共展示了GLContext::genFBO方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: moveTextureToBmp
BitmapPtr BmpTextureMover::moveTextureToBmp(GLTexture& tex, int mipmapLevel)
{
GLContext* pContext = GLContext::getCurrent();
unsigned fbo = pContext->genFBO();
glproc::BindFramebuffer(GL_FRAMEBUFFER, fbo);
glproc::FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
tex.getID(), mipmapLevel);
FBO::checkError("BmpTextureMover::moveTextureToBmp");
IntPoint size = tex.getMipmapSize(mipmapLevel);
BitmapPtr pBmp(new Bitmap(size, getPF()));
if (GLContext::getMain()->isGLES() && getPF() == B5G6R5) {
BitmapPtr pTmpBmp(new Bitmap(size, R8G8B8));
glReadPixels(0, 0, size.x, size.y, GL_RGB, GL_UNSIGNED_BYTE, pTmpBmp->getPixels());
FilterFlipRGB().applyInPlace(pTmpBmp);
pBmp->copyPixels(*pTmpBmp);
} else {
int glPixelFormat = tex.getGLFormat(getPF());
glReadPixels(0, 0, size.x, size.y, glPixelFormat, tex.getGLType(getPF()),
pBmp->getPixels());
}
GLContext::checkError("BmpTextureMover::moveTextureToBmp: glReadPixels()");
glproc::FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
0, 0);
pContext->returnFBOToCache(fbo);
glproc::BindFramebuffer(GL_FRAMEBUFFER, 0);
return pBmp;
}