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Update volumetrics

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This commit is contained in:
Gefüllte Taubenbrust 2024-08-18 15:13:26 +02:00
parent 22ba7449f2
commit e6752008e0
17 changed files with 420 additions and 181 deletions
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49
client/shaders/clouds_merge/opengl_fragment.glsl
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@ -1,24 +1,49 @@
#define cloudsTexture texture0
#define sceneTexture texture1
#define depthmap texture2
uniform sampler2D cloudsTexture;
uniform sampler2D sceneTexture;
uniform sampler2D depthmap;
uniform vec2 texelSize0;
uniform vec3 dayLight;
uniform vec3 cloudColor;
varying vec2 screenspaceCoordinate;
varying vec3 relativePosition;
varying vec3 viewDirection;
varying vec3 sunTint;
varying float auroraFactor;
uniform vec3 cameraOffset;
uniform vec3 cameraPosition;
uniform float cameraNear;
uniform float cameraFar;
uniform float cloudHeight;
uniform float cloudThickness;
float getDepth(vec2 screenspacePosition) {
float depth = texture2D(depthmap, screenspacePosition * 0.5 + 0.5).r;
return cameraNear * cameraFar / (cameraFar + depth * (cameraNear - cameraFar));
}
vec4 sampleClouds(vec2 uv) {
vec4 cloudsKey = texture2D(cloudsTexture, uv);
const vec3 darkColor = vec3(0.05, 0.1, 0.2);
//const vec3 darkColor = vec3(0.05, 0.1, 0.2);
vec3 darkColor = vec3(0.2, 0.4, 0.8) * dayLight;
const vec3 auroraDark = vec3(0., 0.5, 0.5);
const vec3 auroraBright = vec3(0., 0.5, .0);
//const vec3 auroraDark = vec3(0.);
//const vec3 auroraBright = vec3(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),
mix(auroraDark, auroraBright, cloudsKey.b) * cloudsKey.b * auroraFactor +
cloudsKey.r * cloudColor * (darkColor * max(0., 1. - cloudsKey.g) + dayLight * sunTint * cloudsKey.g),
cloudsKey.r);
}
@ -37,8 +62,22 @@ vec4 getClouds(vec2 uv) {
void main(void)
{
vec4 cloudsColor = getClouds(screenspaceCoordinate * 0.5 + 0.5);
vec3 viewVec = normalize(relativePosition);
vec3 position = cameraOffset + cameraPosition;
float depth = getDepth(screenspaceCoordinate) / normalize(viewDirection).z;
float bottomPlaneIntersect = max((cloudHeight - cameraPosition.y) / viewVec.y, 0.);
float topPlaneIntersect = max((cloudHeight + cloudThickness - cameraPosition.y) / viewVec.y, 0.);
float minPlane = min(bottomPlaneIntersect, topPlaneIntersect);
vec4 sceneColor = texture2D(sceneTexture, screenspaceCoordinate * 0.5 + 0.5);
gl_FragColor = vec4(sceneColor.rgb * (1. - cloudsColor.a) + cloudsColor.rgb, 1.);
if (depth > minPlane) {
vec4 finalColor = getClouds(screenspaceCoordinate * 0.5 + 0.5);
gl_FragColor = vec4(sceneColor.rgb * (1. - finalColor.a) + finalColor.rgb, 1.);
} else {
gl_FragColor = sceneColor;
}
}