This is a nice journey through the pipeline so that you can get a overview of how it works. Basics: First triangle, the graphics pipeline, math, buffers, shaders.At that time, I had the first edition! Now we have the 7th (released on August 2015) Going back into my history, this was my first book about graphics programming. OpenGL Superbible became a standard book for learning OpenGL, and actually I cannot suggest anything different that that. Sometimes it is quite a hard task though! There are plenty of available resources so a person can be lost and lose his/her initial passion. When we understand our motivation, we are able to start learning. OpenGL Superbible: Comprehensive Tutorial and Reference (7th Edition)
Opengl 4.4 demo how to#
By the time you reach these points, you will definitely have a more clarified perspective on what you want to achieve and how to get where you want. I left the second list unfinished on purpose. General Computing on GPU (OpenCL, CUDA, Compute shaders).Cooperating with the driver: locks, minimizing memory transfers, batching.Advanced memory management with buffers.Shaders (Geometry, Tessellation, Compute).3D Math - matrices, vectors, projections.Platform differences (PC vs Mobile vs Web vs Console).General knowledge about the computer graphics.I suggest the following topics for the beginning: OpenGL 4.5 (August 2014) can be compared to DX 11.1 or even supersede it. Tesselation shaders, draw indirect, ES2 compatibility, program binaries, separate shaders objects, Compute shaders. To illustrate this idea, I prepared two images: It can transform vertices, calculate color of fragments, delete or add more triangles and even more. Shader is a little program that can compute various things and is run on the GPU. There is a general form of the pipeline, but a lot of parts are fully controlled by you - thanks to shaders. Programmable pipeline is more like a white, transparent box where not only you put input data and wait for the result, but you can insert/change internal mechanisms as well. You could of course tweak this box to your needs but at some point, it was not enough. You inserted the vertex data in the front (at the input) and you got triangles written to the framebuffer (screen) at the end. What is the difference? This is quite a broad topic, but for now I think it is good to know that fixed pipeline was like a black box.
Is there 'old OpenGL ' as well?īasically modern means "using programmable graphics pipeline", old means "fixed pipeline". The first question I would like to answer is why there is a term called 'modern OpenGL'. In this article, I will try to answer some of the questions above and create a guide to a wonderful world of graphics programming using OpenGL. Great! But what does it really mean and what options are available? Do you have to buy expensive books about this technology, or maybe some basic online tutorials are enough? Shaders + Cube Env Map + Phong Lighting Introduction
0 kommentar(er)
