GLSL片段着色器
在过去的几天里，我一直在写一个片段着色器，它将处理im制作的2d游戏的背景。但是，今天我注意到，在渲染时，我的云渲染速度非常慢（从3000 fps下降到300 fps） 起初我认为这是因为我在生成云时做了一些愚蠢的事情，但经过一些实验后，我注意到只有当我将云添加到gl_FragColor中时，才会出现减速。计算它们似乎对性能没有任何影响 我像这样生成云：GLSL片段着色器,glsl,shader,slowdown,Glsl,Shader,Slowdown,在过去的几天里，我一直在写一个片段着色器，它将处理im制作的2d游戏的背景。但是，今天我注意到，在渲染时，我的云渲染速度非常慢（从3000 fps下降到300 fps） 起初我认为这是因为我在生成云时做了一些愚蠢的事情，但经过一些实验后，我注意到只有当我将云添加到gl_FragColor中时，才会出现减速。计算它们似乎对性能没有任何影响 我像这样生成云： float rand(vec2 co){ return fract(sin(dot(co.xy ,vec2(12.9898,78.233)
float rand(vec2 co){
return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
}
float hash( float n ) //Borrowed from voltage
{
return fract(sin(n)*43758.5453);
}
float fBmWRand( vec2 p )//Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*rand( p ); p = p*2.02;
f += 0.25000*rand( p ); p = p*2.03;
f += 0.12500*rand( p ); p = p*2.01;
f += 0.06250*rand( p ); p = p*2.04;
f += 0.03125*rand( p );
return f/0.984375;
}
float noise( in vec2 x )//Borroowed from Mark Sleith
{
vec2 p = floor(x);
vec2 f = fract(x);
f = f*f*(3.0-2.0*f);
float n = p.x + p.y*57.0;
float res = mix(mix( hash(n+ 0.0), hash(n+ 1.0),f.x), mix( hash(n+ 57.0), hash(n+ 58.0),f.x),f.y);
return res;
}
float fbm( vec2 p ) //Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*noise( p ); p = p*2.02;
f += 0.25000*noise( p ); p = p*2.03;
f += 0.12500*noise( p ); p = p*2.01;
f += 0.06250*noise( p ); p = p*2.04;
f += 0.03125*noise( p );
return f/0.984375;
}
vec3 bgGradient()
{
//Getting the height of the current pixel
float height = gl_FragCoord.y / iResolution.y;
//Calculating the brightness of the pixel
float brightness = 1.0 - 0.4 * height;
//Combining everything into a background
vec3 grad = vec3(1., 1., 1.);// * brightness;
return grad;
}
bool star()
{
/*//Getting a position to run random calculations with
float pos = (gl_FragCoord.x / iResolution.x) * (gl_FragCoord.y / iResolution.y) + 0.5;
if(hash(pos) < 0.001)
{
return true;
}
return false*/;
if(fBmWRand(gl_FragCoord.xy / iResolution.xy) < 0.08)
{
return true;
}
return false;
}
float cloudFadeDist = 0.1; //The distance at which the clouds will start fading away
vec4 clouds( vec2 point )
{
vec4 result = vec4(0., 0., 0., 0.);
//Checking if the cloud is above
float fbmResult = fbm(point * 5.);
if(fbmResult > overcast)
{
result = vec4(fbmResult, fbmResult, fbmResult, 1.0);
//result = vec4(1., 1., 1., 1.);
}
else if(fbmResult > overcast - (cloudFadeDist / resFact)) //Outlining the clouds
{
float dist = overcast - fbmResult;
float colorFac = 1.0 - dist / (cloudFadeDist / resFact);
if(colorFac > 0.0001)
{
result = vec4(fbmResult, fbmResult, fbmResult, colorFac);
}
}
//Finer details
float fbmDetail = fbm(point * 20.);
vec4 details = vec4( 0.7 + fbmDetail, 0.7 + fbmDetail, 0.7 + fbmDetail, 1.0);
//result = mix(result, details, result.a);
result = result * details;
result = result * details;
return result;
}
uniform vec2 iResolution;
uniform vec2 iMouse;
uniform float time;
uniform float overcast;
uniform float posX;
uniform float posY;
uniform vec4 dSky; //The color of the sky during the day
uniform vec4 nSky; //The color of the sky during the night
uniform vec4 dCloud; //The color of the clouds at day
uniform vec4 nCloud; //The color of the clouds at night
float resFact = iResolution.x / 500;
//float overcast = iMouse.y / iResolution.y;
//float posX = iMouse.x / iResolution.x;
/*float nSkyR = 0.05;
float nSkyG = 0.05;
float nSkyB = 0.39;*/
float rand(vec2 co){
return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
}
float hash( float n ) //Borrowed from voltage
{
return fract(sin(n)*43758.5453);
}
float fBmWRand( vec2 p )//Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*rand( p ); p = p*2.02;
f += 0.25000*rand( p ); p = p*2.03;
f += 0.12500*rand( p ); p = p*2.01;
f += 0.06250*rand( p ); p = p*2.04;
f += 0.03125*rand( p );
return f/0.984375;
}
float noise( in vec2 x )//Borroowed from Mark Sleith
{
vec2 p = floor(x);
vec2 f = fract(x);
f = f*f*(3.0-2.0*f);
float n = p.x + p.y*57.0;
float res = mix(mix( hash(n+ 0.0), hash(n+ 1.0),f.x), mix( hash(n+ 57.0), hash(n+ 58.0),f.x),f.y);
return res;
}
float fbm( vec2 p ) //Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*noise( p ); p = p*2.02;
f += 0.25000*noise( p ); p = p*2.03;
f += 0.12500*noise( p ); p = p*2.01;
f += 0.06250*noise( p ); p = p*2.04;
f += 0.03125*noise( p );
return f/0.984375;
}
vec3 bgGradient()
{
//Getting the height of the current pixel
float height = gl_FragCoord.y / iResolution.y;
//Calculating the brightness of the pixel
float brightness = 1.0 - 0.4 * height;
//Combining everything into a background
vec3 grad = vec3(1., 1., 1.);// * brightness;
return grad;
}
bool star()
{
/*//Getting a position to run random calculations with
float pos = (gl_FragCoord.x / iResolution.x) * (gl_FragCoord.y / iResolution.y) + 0.5;
if(hash(pos) < 0.001)
{
return true;
}
return false*/;
if(fBmWRand(gl_FragCoord.xy / iResolution.xy) < 0.08)
{
return true;
}
return false;
}
float cloudFadeDist = 0.1; //The distance at which the clouds will start fading away
vec4 clouds( vec2 point )
{
vec4 result = vec4(0., 0., 0., 0.);
//Checking if the cloud is above
float fbmResult = fbm(point * 5.);
if(fbmResult > overcast)
{
result = vec4(fbmResult, fbmResult, fbmResult, 1.0);
//result = vec4(1., 1., 1., 1.);
}
else if(fbmResult > overcast - (cloudFadeDist / resFact)) //Outlining the clouds
{
float dist = overcast - fbmResult;
float colorFac = 1.0 - dist / (cloudFadeDist / resFact);
if(colorFac > 0.0001)
{
result = vec4(fbmResult, fbmResult, fbmResult, colorFac);
}
}
//Finer details
float fbmDetail = fbm(point * 20.);
vec4 details = vec4( 0.7 + fbmDetail, 0.7 + fbmDetail, 0.7 + fbmDetail, 1.0);
//result = mix(result, details, result.a);
result = result * details;
result = result * details;
return result;
}
vec2 sunPos = vec2(0.15, 0.1);
float sunWidth = 0.03;
float sunGlow = 0.015;
float sunR = 1.;
float sunG = 1.;
float sunB = 0.8;
vec4 sun()
{
vec4 result = vec4(0., 0., 0., 0.);
float xPos = gl_FragCoord.x / iResolution.x;
float yPos = gl_FragCoord.y / iResolution.x;
float xDist = xPos - sunPos.x;
float yDist = yPos - sunPos.y;
float dist = sqrt(pow(xDist, 2.) + pow(yDist, 2.));
if(dist < sunWidth)
{
result = vec4(sunR, sunG, sunB, 1.);
}
else if(dist < sunWidth + sunGlow)
{
float distFact = (dist - sunWidth) / sunGlow;
result = vec4(sunR, sunG, sunB , 1. - distFact);
}
return result;
}
float nStart = 2200;
float nEnd = 600;
float dStart = 800;
float dEnd = 2000;
void main(void)
{
//Cretaing the final color variable and adding the gradient
vec4 finalColor = vec4(bgGradient(), 1.0);
//Creating stars
vec4 starLayer = vec4(0., 0., 0., 0.);
if(star() == true)
{
starLayer = vec4(1., 1., 1., 1.); //Make the pixel very bright
}
//Generating the clouds
vec4 cloudLayer = vec4(0., 0., 0., 0.);
for(int i = 0; i < 4; i++)
{
//clouds( (15.0 * float(i)) + gl_FragCoord.xy / iResolution.xy + posX * float(i + 1));
/*vec4 cloud = clouds( vec2((15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1)),
(15. * float(i)) + gl_FragCoord.y / iResoulution.y);*/
vec4 cloud = clouds( vec2( (15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1),
(15. * float(i)) + gl_FragCoord.y / iResolution.y + posY * float(i + 1)));
//finalColor = finalColor + vec4(cloud, 1.);
cloudLayer = mix(cloudLayer, cloud, cloud.a);
}
if(time > nStart || time < nEnd) //Nighttime
{
finalColor = finalColor * nSky;
finalColor = mix(finalColor, starLayer, starLayer.a);
cloudLayer = cloudLayer * nCloud;
//finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
vec4 genericColor = cloudLayer;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
//finalColor = vec4(nSky.r, nSky.g, nSky.b, 1.0);
}
else if(time > dStart && time < dEnd)
{
finalColor = finalColor * dSky;
//cloudLayer = cloudLayer * dCloud;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
else if(time > dEnd && time < nStart) //Evening
{
float timeFact = (time - dEnd) / (nStart - dEnd);
//Calculating the diffirence between night and day
vec4 skyDiff = vec4(nSky.r - dSky.r, nSky.g - dSky.g, nSky.b - dSky.b, 1.);
vec4 skyColor = vec4(dSky.r + (skyDiff.r * timeFact), dSky.g + (skyDiff.g * timeFact), dSky.b + (skyDiff.b * timeFact), 1.);
finalColor = skyColor;
//Stars
finalColor = mix(finalColor, starLayer, starLayer * timeFact);
//Clouds
vec4 cloudDiff = vec4(nCloud.r - dCloud.r, nCloud.g - dCloud.g, nCloud.b - dCloud.b, 1.);
vec4 cloudColor = vec4(dCloud.r + (cloudDiff.r * timeFact), dCloud.g + (cloudDiff.g * timeFact), dCloud.b + (cloudDiff.b * timeFact), 1.);
vec4 cloudLayer = cloudLayer * cloudColor;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
else if(time > nEnd && time < dStart) //Evening
{
float timeFact = (time - nEnd) / (dStart - nEnd);
//Calculating the diffirence between night and day
vec4 skyDiff = vec4(dSky.r - nSky.r, dSky.g - nSky.g, dSky.b - nSky.b, 1.);
vec4 skyColor = vec4(nSky.r + (skyDiff.r * timeFact), nSky.g + (skyDiff.g * timeFact), nSky.b + (skyDiff.b * timeFact), 1.);
finalColor = skyColor;
//Stars
finalColor = mix(finalColor, starLayer, starLayer * 1. - timeFact);
//Clouds
vec4 cloudDiff = vec4(dCloud.r - nCloud.r, dCloud.g - nCloud.g, dCloud.b - nCloud.b, 1.);
vec4 cloudColor = vec4(nCloud.r + (cloudDiff.r * timeFact), nCloud.g + (cloudDiff.g * timeFact), nCloud.b + (cloudDiff.b * timeFact), 1.);
vec4 cloudLayer = cloudLayer * cloudColor;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
//finalColor = vec4(1., 0., 0., 1.);
//vec4 sunColor = sun();
//finalColor = mix(finalColor, sunColor, sunColor.a);
//If there is a star
/*if(star() == true)
{
finalColor = vec4(1., 1., 1., 1.); //Make the pixel very bright
}*/
/*for(int i = 0; i < 4; i++)
{
//clouds( (15.0 * float(i)) + gl_FragCoord.xy / iResolution.xy + posX * float(i + 1));
//vec4 cloud = clouds( vec2((15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1)),
(15. * float(i)) + gl_FragCoord.y / iResoulution.y);
vec4 cloud = clouds( vec2( (15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1),
(15. * float(i)) + gl_FragCoord.y / iResolution.y + posY * float(i + 1)));
//finalColor = finalColor + vec4(cloud, 1.);
finalColor = mix(finalColor, cloud, cloud.a);
}*/
gl_FragColor = finalColor;
}
统一的vec2解决方案；
均匀载体；
均匀浮动时间；
均匀浮云；
均匀浮点数；
均匀浮点数；
均匀vec4-dSky//白天天空的颜色
均匀vec4-nSky//夜晚天空的颜色
均匀矢量云//白天云彩的颜色
均匀矢量场//夜晚云彩的颜色
float resFact=iResolution.x/500；
//浮云云=i使用.y/i解决方案.y；
//float posX=imuse.x/iResolution.x；
/*浮动nSkyR=0.05；
浮动nSkyG=0.05；
浮动nSkyB=0.39*/
浮动兰德（vec2公司）{
返回分数（sin（dot（co.xy，vec2（12.9898,78.233）））*43758.5453）；
}
float hash（float n）//从电压中借用
{
返回分数（sin（n）*43758.5453）；
}
浮动fBmWRand（vec2 p）//Borroowed自Mark Sleith
{
浮动f=0.0；
f+=0.50000*兰特（p）；p=p*2.02；
f+=0.25000*兰特（p）；p=p*2.03；
f+=0.12500*兰特（p）；p=p*2.01；
f+=0.06250*兰特（p）；p=p*2.04；
f+=0.03125*兰特（p）；
返回f/0.984375；
}
浮动噪声（以vec2 x为单位）//Borroowed来自Mark Sleith
{
vec2p=地板（x）；
vec2f=fract（x）；
f=f*f*（3.0-2.0*f）；
浮动n=p.x+p.y*57.0；
float res=混合（混合（散列（n+0.0）、散列（n+1.0）、f.x）、混合（散列（n+57.0）、散列（n+58.0）、f.x）、f.y）；
返回res；
}
浮动fbm（vec2 p）//从Mark Sleith处删除
{
浮动f=0.0；
f+=0.50000*噪声（p）；p=p*2.02；
f+=0.25000*噪声（p）；p=p*2.03；
f+=0.12500*噪声（p）；p=p*2.01；
f+=0.06250*噪声（p）；p=p*2.04；
f+=0.03125*噪声（p）；
返回f/0.984375；
}
vec3梯度（）
{
//获取当前像素的高度
浮动高度=gl_FragCoord.y/iResolution.y；
//计算像素的亮度
浮动亮度=1.0-0.4*高度；
//将所有内容合并到背景中
vec3梯度=vec3（1,1,1.）；/*亮度；
返回梯度；
}
布尔之星（）
{
/*//获得一个位置来运行随机计算
浮动位置=（gl_FragCoord.x/iResolution.x）*（gl_FragCoord.y/iResolution.y）+0.5；
如果（散列（位置）<0.001）
{
返回true；
}
返回false*/；
如果（fBmWRand（gl_FragCoord.xy/iResolution.xy）<0.08）
{
返回true；
}
返回false；
}
浮云FADEDIST=0.1//云层开始消失的距离
vec4云（vec2点）
{
vec4结果=vec4（0,0,0,0.）；
//检查云是否在上面
浮动fbmResult=fbm（点*5.）；
如果（fbmResult>阴天）
{
结果=vec4（fbmResult，fbmResult，fbmResult，1.0）；
//结果=vec4（1,1,1,1.）；
}
else if（fbmResult>cloud-（cloudFadeDist/resFact））//勾勒出云的轮廓
{
浮动距离=阴天-fbmResult；
float colorFac=1.0-距离/（cloudFadeDist/resFact）；
如果（colorFac>0.0001）
{
结果=vec4（fbmResult，fbmResult，fbmResult，colorFac）；
}
}
//更精细的细节
浮点数fbmDetail=fbm（点*20.）；
vec4详细信息=vec4（0.7+fbmDetail，0.7+fbmDetail，0.7+fbmDetail，1.0）；
//结果=混合（结果、细节、结果a）；
结果=结果*详细信息；
结果=结果*详细信息；
返回结果；
}
vec2-sunPos=vec2（0.15,0.1）；
浮动太阳宽度=0.03；
浮动太阳光低=0.015；
浮点数sunR=1。；
浮点数=1。；
浮动sunB=0.8；
vec4 sun（）
{
vec4结果=vec4（0,0,0,0.）；
float xPos=gl_FragCoord.x/iResolution.x；
浮动yPos=gl_FragCoord.y/iResolution.x；
float xDist=xPos-sunPos.x；
浮动yDist=yPos-太阳位置y；
浮动距离=sqrt（功率（xDist，2.）+功率（yDist，2.））；
if（距离<太阳宽度）
{
结果=vec4（sunR，sunG，sunB，1.）；
}
否则如果（距离<太阳宽度+太阳低）
{
float distFact=（dist-sunWidth）/sunGlow；
结果=vec4（sunR，sunG，sunB，1.-distFact）；
}
返回结果；
}
浮点数nStart=2200；
浮动nEnd=600；
浮点数dStart=800；
浮点数=2000；
真空总管（真空）
{
//cretain最终颜色变量并添加渐变
vec4 finalColor=vec4（bgGradient（），1.0）；
//创造明星
vec4星层=vec4（0,0,0,0.）；
如果（星形（）==true）
{
starLayer=vec4（1,1,1,1.）；//使像素非常明亮
}
//生成云
vec4云层=vec4（0,0,0,0.）；
对于（int i=0；i<4；i++）
{
//云（（15.0*float（i））+gl_FragCoord.xy/iResolution.xy+posX*float（i+1））；
/*vec4云=云（vec2（（15.*float（i））+gl_FragCoord.x/iResolution.x+posX*float（i+1）），
（15.*浮动（i））+gl_FragCoord.y/iResolution.y）*/
vec4云=云（vec2（（15.*float（i））+gl_FragCoord.x/iResolution.x+posX*float（i+1），
（15.*float（i））+gl_FragCoord.y/iResolution.y+posY*float（i+1））；
//最终颜色=最终颜色+vec4（云，1.）；
cloudLayer=混合（cloudLayer，cloud，cloud.a）；
}
if（time>nStart | | timegl_FragColor = finalColor;
uniform vec2 iResolution;
uniform vec2 iMouse;
uniform float time;
uniform float overcast;
uniform float posX;
uniform float posY;
uniform vec4 dSky; //The color of the sky during the day
uniform vec4 nSky; //The color of the sky during the night
uniform vec4 dCloud; //The color of the clouds at day
uniform vec4 nCloud; //The color of the clouds at night
float resFact = iResolution.x / 500;
//float overcast = iMouse.y / iResolution.y;
//float posX = iMouse.x / iResolution.x;
/*float nSkyR = 0.05;
float nSkyG = 0.05;
float nSkyB = 0.39;*/
float rand(vec2 co){
return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
}
float hash( float n ) //Borrowed from voltage
{
return fract(sin(n)*43758.5453);
}
float fBmWRand( vec2 p )//Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*rand( p ); p = p*2.02;
f += 0.25000*rand( p ); p = p*2.03;
f += 0.12500*rand( p ); p = p*2.01;
f += 0.06250*rand( p ); p = p*2.04;
f += 0.03125*rand( p );
return f/0.984375;
}
float noise( in vec2 x )//Borroowed from Mark Sleith
{
vec2 p = floor(x);
vec2 f = fract(x);
f = f*f*(3.0-2.0*f);
float n = p.x + p.y*57.0;
float res = mix(mix( hash(n+ 0.0), hash(n+ 1.0),f.x), mix( hash(n+ 57.0), hash(n+ 58.0),f.x),f.y);
return res;
}
float fbm( vec2 p ) //Borroowed from Mark Sleith
{
float f = 0.0;
f += 0.50000*noise( p ); p = p*2.02;
f += 0.25000*noise( p ); p = p*2.03;
f += 0.12500*noise( p ); p = p*2.01;
f += 0.06250*noise( p ); p = p*2.04;
f += 0.03125*noise( p );
return f/0.984375;
}
vec3 bgGradient()
{
//Getting the height of the current pixel
float height = gl_FragCoord.y / iResolution.y;
//Calculating the brightness of the pixel
float brightness = 1.0 - 0.4 * height;
//Combining everything into a background
vec3 grad = vec3(1., 1., 1.);// * brightness;
return grad;
}
bool star()
{
/*//Getting a position to run random calculations with
float pos = (gl_FragCoord.x / iResolution.x) * (gl_FragCoord.y / iResolution.y) + 0.5;
if(hash(pos) < 0.001)
{
return true;
}
return false*/;
if(fBmWRand(gl_FragCoord.xy / iResolution.xy) < 0.08)
{
return true;
}
return false;
}
float cloudFadeDist = 0.1; //The distance at which the clouds will start fading away
vec4 clouds( vec2 point )
{
vec4 result = vec4(0., 0., 0., 0.);
//Checking if the cloud is above
float fbmResult = fbm(point * 5.);
if(fbmResult > overcast)
{
result = vec4(fbmResult, fbmResult, fbmResult, 1.0);
//result = vec4(1., 1., 1., 1.);
}
else if(fbmResult > overcast - (cloudFadeDist / resFact)) //Outlining the clouds
{
float dist = overcast - fbmResult;
float colorFac = 1.0 - dist / (cloudFadeDist / resFact);
if(colorFac > 0.0001)
{
result = vec4(fbmResult, fbmResult, fbmResult, colorFac);
}
}
//Finer details
float fbmDetail = fbm(point * 20.);
vec4 details = vec4( 0.7 + fbmDetail, 0.7 + fbmDetail, 0.7 + fbmDetail, 1.0);
//result = mix(result, details, result.a);
result = result * details;
result = result * details;
return result;
}
vec2 sunPos = vec2(0.15, 0.1);
float sunWidth = 0.03;
float sunGlow = 0.015;
float sunR = 1.;
float sunG = 1.;
float sunB = 0.8;
vec4 sun()
{
vec4 result = vec4(0., 0., 0., 0.);
float xPos = gl_FragCoord.x / iResolution.x;
float yPos = gl_FragCoord.y / iResolution.x;
float xDist = xPos - sunPos.x;
float yDist = yPos - sunPos.y;
float dist = sqrt(pow(xDist, 2.) + pow(yDist, 2.));
if(dist < sunWidth)
{
result = vec4(sunR, sunG, sunB, 1.);
}
else if(dist < sunWidth + sunGlow)
{
float distFact = (dist - sunWidth) / sunGlow;
result = vec4(sunR, sunG, sunB , 1. - distFact);
}
return result;
}
float nStart = 2200;
float nEnd = 600;
float dStart = 800;
float dEnd = 2000;
void main(void)
{
//Cretaing the final color variable and adding the gradient
vec4 finalColor = vec4(bgGradient(), 1.0);
//Creating stars
vec4 starLayer = vec4(0., 0., 0., 0.);
if(star() == true)
{
starLayer = vec4(1., 1., 1., 1.); //Make the pixel very bright
}
//Generating the clouds
vec4 cloudLayer = vec4(0., 0., 0., 0.);
for(int i = 0; i < 4; i++)
{
//clouds( (15.0 * float(i)) + gl_FragCoord.xy / iResolution.xy + posX * float(i + 1));
/*vec4 cloud = clouds( vec2((15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1)),
(15. * float(i)) + gl_FragCoord.y / iResoulution.y);*/
vec4 cloud = clouds( vec2( (15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1),
(15. * float(i)) + gl_FragCoord.y / iResolution.y + posY * float(i + 1)));
//finalColor = finalColor + vec4(cloud, 1.);
cloudLayer = mix(cloudLayer, cloud, cloud.a);
}
if(time > nStart || time < nEnd) //Nighttime
{
finalColor = finalColor * nSky;
finalColor = mix(finalColor, starLayer, starLayer.a);
cloudLayer = cloudLayer * nCloud;
//finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
vec4 genericColor = cloudLayer;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
//finalColor = vec4(nSky.r, nSky.g, nSky.b, 1.0);
}
else if(time > dStart && time < dEnd)
{
finalColor = finalColor * dSky;
//cloudLayer = cloudLayer * dCloud;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
else if(time > dEnd && time < nStart) //Evening
{
float timeFact = (time - dEnd) / (nStart - dEnd);
//Calculating the diffirence between night and day
vec4 skyDiff = vec4(nSky.r - dSky.r, nSky.g - dSky.g, nSky.b - dSky.b, 1.);
vec4 skyColor = vec4(dSky.r + (skyDiff.r * timeFact), dSky.g + (skyDiff.g * timeFact), dSky.b + (skyDiff.b * timeFact), 1.);
finalColor = skyColor;
//Stars
finalColor = mix(finalColor, starLayer, starLayer * timeFact);
//Clouds
vec4 cloudDiff = vec4(nCloud.r - dCloud.r, nCloud.g - dCloud.g, nCloud.b - dCloud.b, 1.);
vec4 cloudColor = vec4(dCloud.r + (cloudDiff.r * timeFact), dCloud.g + (cloudDiff.g * timeFact), dCloud.b + (cloudDiff.b * timeFact), 1.);
vec4 cloudLayer = cloudLayer * cloudColor;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
else if(time > nEnd && time < dStart) //Evening
{
float timeFact = (time - nEnd) / (dStart - nEnd);
//Calculating the diffirence between night and day
vec4 skyDiff = vec4(dSky.r - nSky.r, dSky.g - nSky.g, dSky.b - nSky.b, 1.);
vec4 skyColor = vec4(nSky.r + (skyDiff.r * timeFact), nSky.g + (skyDiff.g * timeFact), nSky.b + (skyDiff.b * timeFact), 1.);
finalColor = skyColor;
//Stars
finalColor = mix(finalColor, starLayer, starLayer * 1. - timeFact);
//Clouds
vec4 cloudDiff = vec4(dCloud.r - nCloud.r, dCloud.g - nCloud.g, dCloud.b - nCloud.b, 1.);
vec4 cloudColor = vec4(nCloud.r + (cloudDiff.r * timeFact), nCloud.g + (cloudDiff.g * timeFact), nCloud.b + (cloudDiff.b * timeFact), 1.);
vec4 cloudLayer = cloudLayer * cloudColor;
finalColor = mix(finalColor, cloudLayer, cloudLayer.a);
}
//finalColor = vec4(1., 0., 0., 1.);
//vec4 sunColor = sun();
//finalColor = mix(finalColor, sunColor, sunColor.a);
//If there is a star
/*if(star() == true)
{
finalColor = vec4(1., 1., 1., 1.); //Make the pixel very bright
}*/
/*for(int i = 0; i < 4; i++)
{
//clouds( (15.0 * float(i)) + gl_FragCoord.xy / iResolution.xy + posX * float(i + 1));
//vec4 cloud = clouds( vec2((15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1)),
(15. * float(i)) + gl_FragCoord.y / iResoulution.y);
vec4 cloud = clouds( vec2( (15. * float(i)) + gl_FragCoord.x / iResolution.x + posX * float(i + 1),
(15. * float(i)) + gl_FragCoord.y / iResolution.y + posY * float(i + 1)));
//finalColor = finalColor + vec4(cloud, 1.);
finalColor = mix(finalColor, cloud, cloud.a);
}*/
gl_FragColor = finalColor;
}