GL_OES_geometry_point_size

Supported Hardware

Series6XT

Valid APIs

OpenGL ES 3.1

Description

This extension adds programmable point size to the geometry shader and allows resizing of generated point sprites that come through as input - useful for things like particle effects.

Registry Link

https://www.khronos.org/registry/gles/extensions/OES/OES_geometry_shader.txt

Example

#extension GL_OES_geometry_shader : require 
#extension GL_OES_geometry_point_size : require 
#extension GL_OES_shader_io_blocks : require 
// Take in point primitives. 
layout(points) in; 
// Output up to 1 line primitive - needs at least two vertices (one line). 
layout(points, max_vertices = 1) out; 
void main() 
{ 
	// Re-emit the point primitive - at twice the size 
	gl_Position = gl_in[0].gl_Position + vec4(0.0,-0.1, 0.0, 0.0); 
	gl_PointSize = gl_in[0].gl_PointSize * 2.0f; 
	EmitVertex(); 
	// End the (point) primitive 
	EndPrimitive(); 
}