OpenGL 深度测试(Depth Test)示例 - C/C++

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本文介绍了OpenGL中的深度测试功能,用于处理3D场景中物体的深度关系和遮挡效果。通过C/C++代码示例展示了如何启用深度测试、清除深度缓冲区、设置深度测试函数,以实现更真实的渲染效果。

OpenGL 深度测试(Depth Test)示例 - C/C++

深度测试(Depth Test)是OpenGL中一个非常重要的功能,它允许我们在渲染3D场景时正确地处理物体的深度关系,从而实现正确的遮挡效果和透视效果。在本篇文章中,我们将通过一个简单的C/C++示例来展示如何使用OpenGL的深度测试功能。

首先,我们需要设置OpenGL的深度测试功能。在初始化OpenGL环境时,我们可以调用以下代码来启用深度测试:

#include <GL/glut.h>

void init() {
   
   
    // 启用深度测试
    glEnable
ros1@Melodic:~$ cd librealsense-2.51.1 ros1@Melodic:~/librealsense-2.51.1$ mkdir build ros1@Melodic:~/librealsense-2.51.1$ cd build ros1@Melodic:~/librealsense-2.51.1/build$ cmake .. -- The CXX compiler identification is GNU 7.5.0 -- The C compiler identification is GNU 7.5.0 -- Check for working CXX compiler: /usr/bin/c++ -- Check for working CXX compiler: /usr/bin/c++ -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- Check for working C compiler: /usr/bin/cc -- Check for working C compiler: /usr/bin/cc -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Checking internet connection... -- Failed to identify Internet connection CMake Warning at CMakeLists.txt:19 (message): No internet connection, disabling BUILD_WITH_TM2 CMake Warning at CMakeLists.txt:25 (message): No internet connection, disabling IMPORT_DEPTH_CAM_FW -- Info: REALSENSE_VERSION_STRING=2.51.1 -- Performing Test COMPILER_SUPPORTS_CXX11 -- Performing Test COMPILER_SUPPORTS_CXX11 - Success -- Performing Test COMPILER_SUPPORTS_CXX0X -- Performing Test COMPILER_SUPPORTS_CXX0X - Success -- Setting Unix configurations -- Building libcurl enabled -- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.1.1") -- using RS2_USE_V4L2_BACKEND -- Found usb: /usr/lib/x86_64-linux-gnu/libusb-1.0.so -- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") -- Checking for module 'libudev' -- Found libudev, version 237 -- Found Udev: /usr/include -- GLFW 3.3 not found; using internal version -- Looking for pthread.h -- Looking for pthread.h - found -- Looking for pthread_create -- Looking for pthread_create - found -- Found Threads: TRUE -- Found Vulkan: /usr/lib/x86_64-linux-gnu/libvulkan.so -- Using X11 for window creation -- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so -- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found -- Looking for gethostbyname -- Looking for gethostbyname - found -- Looking for connect -- Looking for connect - found -- Looking for remove -- Looking for remove - found -- Looking for shmat -- Looking for shmat - found -- Looking for IceConnectionNumber in ICE -- Looking for IceConnectionNumber in ICE - found -- Found X11: /usr/lib/x86_64-linux-gnu/libX11.so -- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so -- Could NOT find apriltag (missing: APRILTAG_INC APRILTAG_LIB) -- Unable to find apriltag library, skipping pose-apriltag example -- Check for updates capability added to realsense-viewer -- Check for updates capability added to realsense-depth-quality -- Configuring done -- Generating done -- Build files have been written to: /home/ros1/librealsense-2.51.1/build ros1@Melodic:~/librealsense-2.51.1/build$
最新发布
09-29
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