experimental map shaders

This commit is contained in:
Eduardo Bart
2012-06-14 15:26:55 -03:00
parent 318109158a
commit 83f86eac64
50 changed files with 725 additions and 377 deletions

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uniform float u_Time;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
void main()
{
vec4 color = texture2D(u_Tex0, v_TexCoord);
int j;
int i;
for(i = -2 ;i <= 2; i++)
for(j = -2; j <= 2; j++)
color += texture2D(u_Tex0, v_TexCoord + vec2(i, j)*0.0025) * 0.025;
gl_FragColor = color;
}

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uniform float u_Time;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
void main()
{
gl_FragColor = texture2D(u_Tex0, v_TexCoord);
}

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uniform float u_Time;
uniform sampler2D u_Tex0;
uniform sampler2D u_Tex1;
varying vec2 v_TexCoord;
vec2 direction = vec2(1.0,0.3);
float speed = 0.05;
float pressure = 0.6;
float zoom = 0.5;
void main(void)
{
vec2 offset = (v_TexCoord + (direction * u_Time * speed)) / zoom;
vec3 bgcol = texture2D(u_Tex0, v_TexCoord).xyz;
vec3 fogcol = texture2D(u_Tex1, offset).xyz;
vec3 col = bgcol + fogcol*pressure;
gl_FragColor = vec4(col,1.0);
}

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uniform float u_Time;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
vec4 grayscale(vec4 color)
{
float gray = dot(color.rgb, vec3(0.299, 0.587, 0.114));
return vec4(gray, gray, gray, 1);
}
void main()
{
gl_FragColor = grayscale(texture2D(u_Tex0, v_TexCoord));
}

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uniform float u_Time;
varying vec2 v_TexCoord;
uniform sampler2D u_Tex0;
void main(void)
{
vec2 q = v_TexCoord;
vec2 uv = 0.5 + (q-0.5)*(0.9 + 0.1*sin(0.2*u_Time));
vec3 oricol = texture2D(u_Tex0,vec2(q.x,q.y)).xyz;
vec3 col = oricol;
col = clamp(col*0.5+0.5*col*col*1.2,0.0,1.0);
col *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0-uv.x)*(1.0-uv.y);
col *= vec3(0.8,1.0,0.7);
col *= 0.9+0.1*sin(10.0*u_Time+uv.y*1000.0);
col *= 0.97+0.03*sin(110.0*u_Time);
gl_FragColor = vec4(col,1.0);
}

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uniform float u_Time;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
void main()
{
vec4 col = texture2D(u_Tex0, v_TexCoord);
float d = u_Time * 2;
col.x += (1.0 + sin(d))*0.25;
col.y += (1.0 + sin(d*2))*0.25;
col.z += (1.0 + sin(d*4))*0.25;
gl_FragColor = col;
}

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uniform float u_Time;
uniform vec2 u_Resolution;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
void main(void)
{
vec2 halfres = u_Resolution.xy/2.0;
vec2 cPos = v_TexCoord.xy * u_Resolution;
cPos.x -= 0.5*halfres.x*sin(u_Time/2.0)+0.3*halfres.x*cos(u_Time)+halfres.x;
cPos.y -= 0.4*halfres.y*sin(u_Time/5.0)+0.3*halfres.y*cos(u_Time)+halfres.y;
float cLength = length(cPos);
vec2 uv = v_TexCoord.xy+ ((cPos/cLength)*sin(cLength/30.0-u_Time*10.0)/25.0)*0.15;
vec3 col = texture2D(u_Tex0,uv).xyz * 250.0/cLength;
gl_FragColor = vec4(col,1.0);
}

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uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
// some const, tweak for best look
const float sampleDist = 1.0;
const float sampleStrength = 2.2;
void main(void)
{
// some sample positions
float samples[10] =
float[](-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08);
// 0.5,0.5 is the center of the screen
// so substracting v_TexCoord from it will result in
// a vector pointing to the middle of the screen
vec2 dir = 0.5 - v_TexCoord;
// calculate the distance to the center of the screen
float dist = sqrt(dir.x*dir.x + dir.y*dir.y);
// normalize the direction (reuse the distance)
dir = dir/dist;
// this is the original colour of this fragment
// using only this would result in a nonblurred version
vec4 color = texture2D(u_Tex0,v_TexCoord);
vec4 sum = color;
// take 10 additional blur samples in the direction towards
// the center of the screen
for(int i = 0; i < 10; i++)
sum += texture2D(u_Tex0, v_TexCoord + dir * samples[i] * sampleDist);
// we have taken eleven samples
sum *= 1.0/11.0;
// weighten the blur effect with the distance to the
// center of the screen ( further out is blurred more)
float t = dist * sampleStrength;
t = clamp(t ,0.0,1.0); //0 &lt;= t &lt;= 1
//Blend the original color with the averaged pixels
gl_FragColor = mix(color, sum, t);
}

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uniform float u_Time;
uniform sampler2D u_Tex0;
varying vec2 v_TexCoord;
vec4 sepia(vec4 color)
{
return vec4(dot(color, vec4(.393, .769, .189, .0)),
dot(color, vec4(.349, .686, .168, .0)),
dot(color, vec4(.272, .534, .131, .0)),
1);
}
void main()
{
gl_FragColor = sepia(texture2D(u_Tex0, v_TexCoord));
}

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uniform sampler2D u_Tex0;
uniform float u_Time;
varying vec2 v_TexCoord;
vec2 tibiaDir = vec2(1.0, 1.0);
void main(void)
{
vec2 dir = 0.5 - v_TexCoord;
float dist = sqrt(dir.x*dir.x + dir.y*dir.y);
float scale = 0.8 + dist*0.5;
vec4 color = texture2D(u_Tex0, -(dir*scale - 0.5));
gl_FragColor = color;
}