Revisions to How to implement this kind of ripples with a GLSL fragment shader?

broken image fixed (click 'rendered output' or 'side-by-side' to see the difference); for more info, see https://gist.github.com/Glorfindel83/9d954d34385d2ac2597bbe864466259f

Source Link

edit approved Jun 4, 2019 at 9:06

Glorfindel

992
1
9
16

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

source http://fc03.deviantart.net/fs70/f/2013/080/d/9/jungle_tranquility_animated_by_fadwaangela-d5yb54c.gif

Now the question is how are these ripples implemented?

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

source http://fc03.deviantart.net/fs70/f/2013/080/d/9/jungle_tranquility_animated_by_fadwaangela-d5yb54c.gif

Now the question is how are these ripples implemented?

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

source

Now the question is how are these ripples implemented?

Disambiguating reflection tag as discussed here https://gamedev.meta.stackexchange.com/q/2552/39518

Link

edited Oct 31, 2017 at 23:35

DMGregory ♦

141k
23
258
401

2d shaders glsl water reflection reflection-rendering

Tweeted twitter.com/#!/StackGameDev/status/551005927059775488

occurred Jan 2, 2015 at 13:23

Added image source.

Source Link

edited Jan 2, 2015 at 10:48

cepro

113
1
6

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

source http://fc03.deviantart.net/fs70/f/2013/080/d/9/jungle_tranquility_animated_by_fadwaangela-d5yb54c.gif

Now the question is how are these ripples implemented?

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

http://fc03.deviantart.net/fs70/f/2013/080/d/9/jungle_tranquility_animated_by_fadwaangela-d5yb54c.gif

Now the question is how are these ripples implemented?

So I have already implemented the reflection part:

uniform sampler2D texture;
uniform vec2 resolution;
uniform vec3 overlayColor;

void main()
{
vec2 uv = gl_FragCoord.xy / resolution.xy;

if (uv.y > 0.3)// is air - no reflection or effect
{
    gl_FragColor = texture2D(texture, vec2(uv.x, uv.y));
}
else
{
    // Compute the mirror effect.
    vec4 color = texture2D(texture, vec2(uv.x, 0.6 - uv.y));
    // 
    vec4 finalColor = vec4(mix(color.rgb, overlayColor, 0.25), 1.0);
    gl_FragColor = finalColor;
}
}

source http://fc03.deviantart.net/fs70/f/2013/080/d/9/jungle_tranquility_animated_by_fadwaangela-d5yb54c.gif

Now the question is how are these ripples implemented?

Source Link

asked Jan 2, 2015 at 10:34

cepro

113
1
6

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