playcanvas
Version:
PlayCanvas WebGL game engine
27 lines (25 loc) • 1 kB
JavaScript
var glslUpsamplePS = `
uniform sampler2D sourceTexture;
uniform vec2 sourceInvResolution;
varying vec2 uv0;
void main()
{
float x = sourceInvResolution.x;
float y = sourceInvResolution.y;
vec3 a = texture2D (sourceTexture, vec2 (uv0.x - x, uv0.y + y)).rgb;
vec3 b = texture2D (sourceTexture, vec2 (uv0.x, uv0.y + y)).rgb;
vec3 c = texture2D (sourceTexture, vec2 (uv0.x + x, uv0.y + y)).rgb;
vec3 d = texture2D (sourceTexture, vec2 (uv0.x - x, uv0.y)).rgb;
vec3 e = texture2D (sourceTexture, vec2 (uv0.x, uv0.y)).rgb;
vec3 f = texture2D (sourceTexture, vec2 (uv0.x + x, uv0.y)).rgb;
vec3 g = texture2D (sourceTexture, vec2 (uv0.x - x, uv0.y - y)).rgb;
vec3 h = texture2D (sourceTexture, vec2 (uv0.x, uv0.y - y)).rgb;
vec3 i = texture2D (sourceTexture, vec2 (uv0.x + x, uv0.y - y)).rgb;
vec3 value = e * 4.0;
value += (b + d + f + h) * 2.0;
value += (a + c + g + i);
value *= 1.0 / 16.0;
gl_FragColor = vec4(value, 1.0);
}
`;
export { glslUpsamplePS as default };