vbo opengl

VBO, PbO and FBO (III) (22:52:28) Tags:FBOFramebufferOpenGLExtensionIt FBO, frame buffer object On the OpenGL rendering assembly line, geometric data and texture data are converted and tested multiple times, and finally displayed on the screen in the form of two-dimensional pixels. The pixel location of the final display phase on the OpenGL ass

you read the source code and link to how OpenGL works.What are Vbo and Vao?When shaders is running on the GPU and other code is running on the CPU, you need a way to pass the data from the CPU to the GPU. In this article, we transmit a triangle of three vertex data, but in larger projects 3D models will have thousands of vertices, colors, mapping coordinates and other things.That's why we need vertex Buffe

The speed comparison between the VBO and displaylist discussed in the previous two times has not been added with cropping (view frustum culling), rendering in my terrainProgramAfter the cropping function is added, the test shows that:1. After cropping is added, the frame rate of using VBO is equivalent to that of using displaylist to draw frames.2. No view frustum culling is performed. The observed terrain

context environment the function API official description: The display stateOf a window is initially for the window to be shown. But the window's display state was not actually acted upon until Glutmainloop was entered. This means until Glutmainloop was called, rendering to a created window was ineffective because the window can not yet be di Splayed. Simply put, the rendering of the window works after the Glutmainloop function is executed. If you do not call Glutmainloop, the window is not dis

In my recently written terrain renderingProgramIt is found that using vertex buffer cannot increase the frame rate. Using VBO can indeed increase the frame rate by at least twice, but can display lists achieve the speed of VBO? My video card is NVIDIA geforce FX 5700le, and the video card driver 81. 98. However, we found that using displaylists can save half of the video memory compared with

The previous discussions about VBO and displaylists are not very detailed. Now I want to repeat them. However, note that my test results are provided without viewing frustum culling. AboutDisplay listAndVBO Display list SetOpenGLCommand to compile, save on the video card, and allow to saveVertex Array Advantages: Graphic rendering and data managementOpenGLToOpenGLBrings more optimization opportunities, andDisplay listsIt can be stored in the

VBO-the buffer Object used to store vertex data.VAO-the object used to organize the VBO.Generic Vertex Attribute-common vertex properties.For example, the Vertexattribpointer command copies the value of Array_buffer_binding (the queriable name of the the BUFFER bi Nding corresponding to the target Array_buffer) to the client state variable vertex_attrib_array_buffer_binding for the SP Ecified index.The Vertexattribpointer command copies the value of A

Write in frontThen the previous section, when the development environment was set up, of course, we wanted to write 3D applications right away. But we also need some patience, because OpenGL is a low-level API, so we have a little more basic knowledge, before we begin to draw 3D graphics, we will be familiar with the concepts and processes of modern OpenGL by drawing a triangular program. In this section yo

not a buffer-object, so it does not need to store data. Second, it is for "vertex", that is, it is closely related to "vertex painting" and has no relationship with the vertex array, VAO can be understood as a status container that records the status of VBO. With VAO, you can quickly access the VBO status and VBO data. VAO records the information required in a d