While Writing a vertex shader- Is is mandatory to have a gl_Position value for each vetex of Geometry? Or we can use “if” Statement as follows: if( pos_current.z < depth + L0) gl_Position = position_ES; to give gl_Position value for only certain vertex of Geometry. I am Trying to implement Rando…

According to the following post, gl_Position always needs to be written by the final vertex processing stage. In WebGL that is the vertex shader. [Yakov Galka] Is writing to `gl_Position` in Vertex Shader necessary when there is a Geometry Shader opengl, glsl asked by…

Is it mandatory to have a value for "gl_Position" in Vertex Shader

Questions

Mugen87 December 15, 2020, 10:04am 2

According to the following post, gl_Position always needs to be written by the final vertex processing stage. In WebGL that is the vertex shader.

BTW: The usage of the GLSL operataion discard only works in the fragment shader.

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Is it mandatory to have a value for "gl_Position" in Vertex Shader

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