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Volumetric effects

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This commit is contained in:
Gefüllte Taubenbrust 2024-07-05 12:15:22 +02:00
parent cd6e304cfa
commit 22ba7449f2
15 changed files with 468 additions and 23 deletions
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44
client/shaders/clouds_merge/opengl_fragment.glsl Normal file
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#define cloudsTexture texture0
#define sceneTexture texture1
uniform sampler2D cloudsTexture;
uniform sampler2D sceneTexture;
uniform vec2 texelSize0;
uniform vec3 dayLight;
varying vec2 screenspaceCoordinate;
vec4 sampleClouds(vec2 uv) {
vec4 cloudsKey = texture2D(cloudsTexture, uv);
const vec3 darkColor = vec3(0.05, 0.1, 0.2);
const vec3 auroraDark = vec3(0., 0.5, 0.5);
const vec3 auroraBright = vec3(0., 0.5, .0);
return vec4(
mix(auroraDark, auroraBright, cloudsKey.b) * cloudsKey.b * max(0., 1. - cloudsKey.r) +
cloudsKey.r * (darkColor * max(0., 1. - cloudsKey.g) + dayLight * cloudsKey.g),
cloudsKey.r);
}
vec4 getClouds(vec2 uv) {
return
sampleClouds(uv - texelSize0 * vec2(-1.0, -1.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 0.0, -1.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 1.0, -1.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2(-1.0, 0.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 0.0, 0.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 1.0, 0.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2(-1.0, 1.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 0.0, 1.0)) / 9.0 +
sampleClouds(uv - texelSize0 * vec2( 1.0, 1.0)) / 9.0;
}
void main(void)
{
vec4 cloudsColor = getClouds(screenspaceCoordinate * 0.5 + 0.5);
vec4 sceneColor = texture2D(sceneTexture, screenspaceCoordinate * 0.5 + 0.5);
gl_FragColor = vec4(sceneColor.rgb * (1. - cloudsColor.a) + cloudsColor.rgb, 1.);
}