Sunshine/assets/shaders/opengl/Scene.vert

22 lines
368 B
GLSL

#version 300 es
#ifdef GL_ES
precision mediump float;
#endif
out vec2 tex;
void main()
{
float idHigh = float(gl_VertexID >> 1);
float idLow = float(gl_VertexID & int(1));
float x = idHigh * 4.0 - 1.0;
float y = idLow * 4.0 - 1.0;
float u = idHigh * 2.0;
float v = idLow * 2.0;
gl_Position = vec4(x, y, 0.0, 1.0);
tex = vec2(u, v);
}