opengl 4.3 best ways to deal with vertex data

Let’s add a vertex and a fragment shader to the HelloTriangle program. HelloTriangle With Vertex and Fragment Shaders

The fragment shader also determines whether a fragment should be drawn. These pixels, or fragments, are what the fragment shader determines the final colour of. The output from the previous shaders is interpolated over all of the pixels on the screen that are covered by a primitive. This shader allows the processing, and creation if necessary, of additional geometric primitives. The tessellation shaders are optional. These shaders may increase the number of geometric primitives to better describe the models. This shader may do no more that pass the vertex on to the next filter, or it may do more complex tasks such as computing the vertex’s screen position. The purpose of the vertex shader is to output the final vertex position in device coordinates and any data that the fragment shader requires. Vertex Shaderįor each vertex issued by the drawing program, the vertex shader is called. This is a simplified view the vertex and geometry shaders can also affect the colours, but final colour selection is performed in the fragment shader. The first four shaders are used to determine the position of the various primitives on the screen and the fragment shader determines the colour of each primitive. You will notice that there are 5 shaders shown:

Of OpenGL Programming Guide, Eighth Edition shows the rendering pipeline for OpenGL version 4.3.

Opengl 4.3 best ways to deal with vertex data