#version 310 es | |
precision mediump float; | |
precision mediump int; | |
layout(binding = 0) uniform mediump sampler2D tex; | |
layout(binding = 1) uniform Count | |
{ | |
float count; | |
}; | |
layout(location = 0) in highp vec4 vertex; | |
layout(location = 0) out vec4 fragColor; | |
void main() { | |
highp float size = 1.0 / float(textureSize(tex, 0).x); | |
float r = 0.0; | |
float d = dFdx(vertex.x); | |
for (float i = 0.0; i < count ; i += 1.0) | |
r += size * d; | |
fragColor = vec4(r); | |
} |