27 lines
726 B
Scala
27 lines
726 B
Scala
$input v_skyColor, v_screenPos, v_viewDir
|
|
|
|
/*
|
|
* Copyright 2017 Stanislav Pidhorskyi. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
|
|
*/
|
|
|
|
uniform vec4 u_parameters; // x - sun size, y - sun bloom, z - exposition, w - time
|
|
uniform vec4 u_sunDirection;
|
|
uniform vec4 u_sunLuminance;
|
|
|
|
#include "../common/common.sh"
|
|
|
|
void main()
|
|
{
|
|
float size2 = u_parameters.x * u_parameters.x;
|
|
|
|
vec3 lightDir = normalize(u_sunDirection.xyz);
|
|
float dist = 2.0 * (1.0 - dot(normalize(v_viewDir), lightDir));
|
|
float sun = exp(-dist/ u_parameters.y / size2) + step(dist, size2);
|
|
float sun2 = min(sun * sun, 1.0);
|
|
vec3 color = v_skyColor + sun2;
|
|
color = toGamma(color);
|
|
|
|
gl_FragColor = vec4(color, 1.0);
|
|
}
|