How to draw points

Draw points using the gl.POINTS drawing mode.

data

Vertice Index x y
0 0 10 5
1 1 44 10
2 2 24 20
3 3 50 15
4 4 94 20
5 5 44 30

pixel

r
0
g
0
b
0
a
0
x
0
y
0

Fragment Shader

precision mediump float;uniform vec2 u_resolution;void main() { vec2 uv = gl_FragCoord.xy / u_resolution.xy; if (gl_FragCoord.x == 11.50) { gl_FragColor = vec4(1., 0., 0.0, 1.0); } else { gl_FragColor = vec4(uv.x, uv.y, 0.7, 1.0); }}

Vertex Shader

precision mediump float;attribute vec2 a_position;uniform vec2 u_resolution;uniform float u_time;void main() { vec2 pos = a_position / u_resolution * 2.0 - 1.0; float x = sin(u_time) / 4. + pos.x; float y = cos(u_time) / 4. + pos.y; gl_Position = vec4(x, -y, 0.0, 1.0);}