Remove trailing spaces

This commit is contained in:
raysan5
2021-10-19 14:57:12 +02:00
parent 719c1551cc
commit fec0ce34c5
80 changed files with 309 additions and 310 deletions

View File

@ -17,9 +17,9 @@ void main()
{
// Texel color fetching from texture sampler
vec4 texelColor = texture(texture0, fragTexCoord);
// NOTE: Implement here your fragment shader code
finalColor = texelColor*colDiffuse;
}

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@ -13,14 +13,14 @@ uniform mat4 mvp;
out vec2 fragTexCoord;
out vec4 fragColor;
// NOTE: Add here your custom variables
// NOTE: Add here your custom variables
void main()
{
// Send vertex attributes to fragment shader
fragTexCoord = vertexTexCoord;
fragColor = vertexColor;
// Calculate final vertex position
gl_Position = mvp*vec4(vertexPosition, 1.0);
}

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@ -24,7 +24,7 @@ void main()
{
// Compute MVP for current instance
mat4 mvpi = mvp*instanceTransform;
// Send vertex attributes to fragment shader
fragPosition = vec3(mvpi*vec4(vertexPosition, 1.0));
fragTexCoord = vertexTexCoord;

View File

@ -13,9 +13,9 @@ out vec4 finalColor;
// NOTE: Add here your custom variables
const vec2 size = vec2(800, 450); // render size
const float samples = 5.0; // pixels per axis; higher = bigger glow, worse performance
const float quality = 2.5; // lower = smaller glow, better quality
const vec2 size = vec2(800, 450); // Framebuffer size
const float samples = 5.0; // Pixels per axis; higher = bigger glow, worse performance
const float quality = 2.5; // Defines size factor: Lower = smaller glow, better quality
void main()
{

View File

@ -24,8 +24,8 @@ void main()
{
// Texel color fetching from texture sampler
vec3 texelColor = texture(texture0, fragTexCoord).rgb*weight[0];
for (int i = 1; i < 3; i++)
for (int i = 1; i < 3; i++)
{
texelColor += texture(texture0, fragTexCoord + vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];
texelColor += texture(texture0, fragTexCoord - vec2(offset[i])/renderWidth, 0.0).rgb*weight[i];

View File

@ -22,6 +22,6 @@ void main()
float x = fract(fragTexCoord.s);
float final = smoothstep(divider - 0.1, divider + 0.1, x);
finalColor = mix(texelColor0, texelColor1, final);
}

View File

@ -24,22 +24,22 @@ void main()
vec3 tc = vec3(1.0, 1.0, 1.0);
float lum = length(texture(texture0, fragTexCoord).rgb);
if (lum < lumThreshold01)
if (lum < lumThreshold01)
{
if (mod(gl_FragCoord.x + gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold02)
if (lum < lumThreshold02)
{
if (mod(gl_FragCoord.x - gl_FragCoord.y, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold03)
if (lum < lumThreshold03)
{
if (mod(gl_FragCoord.x + gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}
if (lum < lumThreshold04)
if (lum < lumThreshold04)
{
if (mod(gl_FragCoord.x - gl_FragCoord.y - hatchOffsetY, 10.0) == 0.0) tc = vec3(0.0, 0.0, 0.0);
}

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@ -47,7 +47,7 @@ vec4 PostFX(sampler2D tex, vec2 uv)
if (invert == 1) c = texture(tex, tlPos * vec2(1.0/renderWidth, 1.0/renderHeight)) * 1.4;
else c = vec4(0.0, 0.0, 0.0, 1.0);
}
return c;
}

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@ -18,21 +18,21 @@ vec2 VectorRotateTime(vec2 v, float speed)
{
float time = uTime*speed;
float localTime = fract(time); // The time domain this works on is 1 sec.
if ((localTime >= 0.0) && (localTime < 0.25)) angle = 0.0;
else if ((localTime >= 0.25) && (localTime < 0.50)) angle = PI/4*sin(2*PI*localTime - PI/2);
else if ((localTime >= 0.50) && (localTime < 0.75)) angle = PI*0.25;
else if ((localTime >= 0.75) && (localTime < 1.00)) angle = PI/4*sin(2*PI*localTime);
// Rotate vector by angle
v -= 0.5;
v = mat2(cos(angle), -sin(angle), sin(angle), cos(angle))*v;
v += 0.5;
return v;
}
float Rectangle(in vec2 st, in float size, in float fill)
float Rectangle(in vec2 st, in float size, in float fill)
{
float roundSize = 0.5 - size/2.0;
float left = step(roundSize, st.x);
@ -44,7 +44,7 @@ float Rectangle(in vec2 st, in float size, in float fill)
}
void main()
{
{
vec2 fragPos = fragTexCoord;
fragPos.xy += uTime/9.0;
@ -53,7 +53,7 @@ void main()
vec2 fpos = fract(fragPos); // Get the fractional coords
fpos = VectorRotateTime(fpos, 0.2);
float alpha = Rectangle(fpos, 0.216, 1.0);
vec3 color = vec3(0.3, 0.3, 0.3);

View File

@ -21,7 +21,7 @@ void main()
// Linearize depth value
float depth = (2.0*zNear)/(zFar + zNear - z*(zFar - zNear));
// Calculate final fragment color
finalColor = vec4(depth, depth, depth, 1.0f);
}

View File

@ -24,13 +24,13 @@ void main()
// The following two variables need to be set per eye
vec2 LensCenter = fragTexCoord.x < 0.5 ? LeftLensCenter : RightLensCenter;
vec2 ScreenCenter = fragTexCoord.x < 0.5 ? LeftScreenCenter : RightScreenCenter;
// Scales input texture coordinates for distortion: vec2 HmdWarp(vec2 fragTexCoord, vec2 LensCenter)
vec2 theta = (fragTexCoord - LensCenter)*ScaleIn; // Scales to [-1, 1]
float rSq = theta.x*theta.x + theta.y*theta.y;
vec2 theta1 = theta*(HmdWarpParam.x + HmdWarpParam.y*rSq + HmdWarpParam.z*rSq*rSq + HmdWarpParam.w*rSq*rSq*rSq);
//vec2 tc = LensCenter + Scale*theta1;
// Detect whether blue texture coordinates are out of range since these will scaled out the furthest
vec2 thetaBlue = theta1*(ChromaAbParam.z + ChromaAbParam.w*rSq);
vec2 tcBlue = LensCenter + Scale*thetaBlue;

View File

@ -9,7 +9,7 @@
Each integer is tested to see if it is a prime number. Primes are colored white.
Non-primes are colored with a color that indicates the smallest factor which evenly divdes our integer.
You can change the scale variable to make a larger or smaller grid.
You can change the scale variable to make a larger or smaller grid.
Total number of integers displayed = scale squared, so scale = 100 tests the first 10,000 integers.
WARNING: If you make scale too large, your GPU may bog down!
@ -28,11 +28,11 @@ vec4 Colorizer(float counter, float maxSize)
{
float red = 0.0, green = 0.0, blue = 0.0;
float normsize = counter/maxSize;
red = smoothstep(0.3, 0.7, normsize);
green = sin(3.14159*normsize);
blue = 1.0 - smoothstep(0.0, 0.4, normsize);
return vec4(0.8*red, 0.8*green, 0.8*blue, 1.0);
}
@ -45,7 +45,7 @@ void main()
if ((value == 0) || (value == 1) || (value == 2)) finalColor = vec4(1.0);
else
{
for (int i = 2; (i < max(2, sqrt(value) + 1)); i++)
for (int i = 2; (i < max(2, sqrt(value) + 1)); i++)
{
if ((value - i*floor(float(value)/float(i))) == 0)
{

View File

@ -7,7 +7,7 @@ out vec4 fragColor;
uniform sampler2D texture0;
uniform vec4 colDiffuse;
// NOTE: Add here your custom variables
// NOTE: Add here your custom variables
const float PI = 3.1415926535;

View File

@ -55,7 +55,7 @@ void main()
if (lights[i].enabled == 1)
{
vec3 light = vec3(0.0);
if (lights[i].type == LIGHT_DIRECTIONAL) light = -normalize(lights[i].target - lights[i].position);
if (lights[i].type == LIGHT_POINT) light = normalize(lights[i].position - fragPosition);
@ -70,10 +70,10 @@ void main()
finalColor = (texelColor*((colDiffuse + vec4(specular,1))*vec4(lightDot, 1.0)));
finalColor += texelColor*(ambient/10.0);
// Gamma correction
finalColor = pow(finalColor, vec4(1.0/2.2));
// Fog calculation
float dist = length(viewPos - fragPosition);

View File

@ -17,10 +17,10 @@ void main()
{
// Texel color fetching from texture sampler
vec4 texelColor = texture(texture0, fragTexCoord)*colDiffuse*fragColor;
// Convert texel color to grayscale using NTSC conversion weights
float gray = dot(texelColor.rgb, vec3(0.299, 0.587, 0.114));
// Calculate final fragment color
finalColor = vec4(gray, gray, gray, texelColor.a);
}

View File

@ -51,7 +51,7 @@ void main()
We use dot product (z.x * z.x + z.y * z.y) to determine the magnitude (length) squared.
And once the magnitude squared is > 4, then magnitude > 2 is also true (saves computational power).
*************************************************************************************************/
// The pixel coordinates are scaled so they are on the mandelbrot scale
// NOTE: fragTexCoord already comes as normalized screen coordinates but offset must be normalized before scaling and zoom
vec2 z = vec2((fragTexCoord.x + offset.x/screenDims.x)*2.5/zoom, (fragTexCoord.y + offset.y/screenDims.y)*1.5/zoom);
@ -60,18 +60,18 @@ void main()
for (iterations = 0; iterations < MAX_ITERATIONS; iterations++)
{
z = ComplexSquare(z) + c; // Iterate function
if (dot(z, z) > 4.0) break;
}
// Another few iterations decreases errors in the smoothing calculation.
// See http://linas.org/art-gallery/escape/escape.html for more information.
z = ComplexSquare(z) + c;
z = ComplexSquare(z) + c;
// This last part smooths the color (again see link above).
float smoothVal = float(iterations) + 1.0 - (log(log(length(z)))/log(2.0));
// Normalize the value so it is between 0 and 1.
float norm = smoothVal/float(MAX_ITERATIONS);

View File

@ -54,17 +54,17 @@ void main()
if (lights[i].enabled == 1)
{
vec3 light = vec3(0.0);
if (lights[i].type == LIGHT_DIRECTIONAL)
if (lights[i].type == LIGHT_DIRECTIONAL)
{
light = -normalize(lights[i].target - lights[i].position);
}
if (lights[i].type == LIGHT_POINT)
if (lights[i].type == LIGHT_POINT)
{
light = normalize(lights[i].position - fragPosition);
}
float NdotL = max(dot(normal, light), 0.0);
lightDot += lights[i].color.rgb*NdotL;
@ -76,7 +76,7 @@ void main()
finalColor = (texelColor*((colDiffuse + vec4(specular, 1.0))*vec4(lightDot, 1.0)));
finalColor += texelColor*(ambient/10.0)*colDiffuse;
// Gamma correction
finalColor = pow(finalColor, vec4(1.0/2.2));
}

View File

@ -17,19 +17,19 @@ out vec4 finalColor;
void main()
{
vec4 texel = texture(texture0, fragTexCoord); // Get texel color
vec2 texelScale = vec2(0.0);
vec4 texel = texture(texture0, fragTexCoord); // Get texel color
vec2 texelScale = vec2(0.0);
texelScale.x = outlineSize/textureSize.x;
texelScale.y = outlineSize/textureSize.y;
// We sample four corner texels, but only for the alpha channel (this is for the outline)
vec4 corners = vec4(0.0);
corners.x = texture(texture0, fragTexCoord + vec2(texelScale.x, texelScale.y)).a;
corners.y = texture(texture0, fragTexCoord + vec2(texelScale.x, -texelScale.y)).a;
corners.z = texture(texture0, fragTexCoord + vec2(-texelScale.x, texelScale.y)).a;
corners.w = texture(texture0, fragTexCoord + vec2(-texelScale.x, -texelScale.y)).a;
float outline = min(dot(corners, vec4(1.0)), 1.0);
vec4 color = mix(vec4(0.0), outlineColor, outline);
finalColor = mix(color, texel, texel.a);
// We sample four corner texels, but only for the alpha channel (this is for the outline)
vec4 corners = vec4(0.0);
corners.x = texture(texture0, fragTexCoord + vec2(texelScale.x, texelScale.y)).a;
corners.y = texture(texture0, fragTexCoord + vec2(texelScale.x, -texelScale.y)).a;
corners.z = texture(texture0, fragTexCoord + vec2(-texelScale.x, texelScale.y)).a;
corners.w = texture(texture0, fragTexCoord + vec2(-texelScale.x, -texelScale.y)).a;
float outline = min(dot(corners, vec4(1.0)), 1.0);
vec4 color = mix(vec4(0.0), outlineColor, outline);
finalColor = mix(color, texel, texel.a);
}

View File

@ -15,12 +15,12 @@ out vec4 finalColor;
void main()
{
// To show overdraw, we just render all the fragments
// To show overdraw, we just render all the fragments
// with a solid color and some transparency
// NOTE: This is not a postpro render,
// NOTE: This is not a postpro render,
// it will only render all screen texture in a plain color
finalColor = vec4(1.0, 0.0, 0.0, 0.2);
}

View File

@ -20,12 +20,12 @@ void main()
{
// Texel color fetching from texture sampler
vec3 texelColor = texture(texture0, fragTexCoord.xy).rgb;
texelColor = pow(texelColor, vec3(gamma, gamma, gamma));
texelColor = texelColor*numColors;
texelColor = floor(texelColor);
texelColor = texelColor/numColors;
texelColor = pow(texelColor, vec3(1.0/gamma));
finalColor = vec4(texelColor, 1.0);
}

View File

@ -21,12 +21,12 @@ void main()
colors[0] = vec3(0.0, 0.0, 1.0);
colors[1] = vec3(1.0, 1.0, 0.0);
colors[2] = vec3(1.0, 0.0, 0.0);
float lum = (texelColor.r + texelColor.g + texelColor.b)/3.0;
int ix = (lum < 0.5)? 0:1;
vec3 tc = mix(colors[ix], colors[ix + 1], (lum - float(ix)*0.5)/0.5);
finalColor = vec4(tc, 1.0);
}

View File

@ -8,7 +8,7 @@ in vec4 fragColor;
out vec4 finalColor;
uniform vec3 viewEye;
uniform vec3 viewCenter;
uniform vec3 viewCenter;
uniform float runTime;
uniform vec2 resolution;
@ -32,7 +32,7 @@ uniform vec2 resolution;
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// A list of useful distance function to simple primitives, and an example on how to
// A list of useful distance function to simple primitives, and an example on how to
// do some interesting boolean operations, repetition and displacement.
//
// More info here: http://www.iquilezles.org/www/articles/distfunctions/distfunctions.htm
@ -143,7 +143,7 @@ float sdPryamid4(vec3 p, vec3 h ) // h = { cos a, sin a, height }
{
// Tetrahedron = Octahedron - Cube
float box = sdBox( p - vec3(0,-2.0*h.z,0), vec3(2.0*h.z) );
float d = 0.0;
d = max( d, abs( dot(p, vec3( -h.x, h.y, 0 )) ));
d = max( d, abs( dot(p, vec3( h.x, h.y, 0 )) ));
@ -238,7 +238,7 @@ vec2 map( in vec3 pos )
res = opU( res, vec2( 0.5*sdTorus( opTwist(pos-vec3(-2.0,0.25, 2.0)),vec2(0.20,0.05)), 46.7 ) );
res = opU( res, vec2( sdConeSection( pos-vec3( 0.0,0.35,-2.0), 0.15, 0.2, 0.1 ), 13.67 ) );
res = opU( res, vec2( sdEllipsoid( pos-vec3( 1.0,0.35,-2.0), vec3(0.15, 0.2, 0.05) ), 43.17 ) );
return res;
}
@ -246,14 +246,14 @@ vec2 castRay( in vec3 ro, in vec3 rd )
{
float tmin = 0.2;
float tmax = 30.0;
#if 1
// bounding volume
float tp1 = (0.0-ro.y)/rd.y; if( tp1>0.0 ) tmax = min( tmax, tp1 );
float tp2 = (1.6-ro.y)/rd.y; if( tp2>0.0 ) { if( ro.y>1.6 ) tmin = max( tmin, tp2 );
else tmax = min( tmax, tp2 ); }
#endif
float t = tmin;
float m = -1.0;
for( int i=0; i<64; i++ )
@ -287,9 +287,9 @@ float calcSoftshadow( in vec3 ro, in vec3 rd, in float mint, in float tmax )
vec3 calcNormal( in vec3 pos )
{
vec2 e = vec2(1.0,-1.0)*0.5773*0.0005;
return normalize( e.xyy*map( pos + e.xyy ).x +
e.yyx*map( pos + e.yyx ).x +
e.yxy*map( pos + e.yxy ).x +
return normalize( e.xyy*map( pos + e.xyy ).x +
e.yyx*map( pos + e.yyx ).x +
e.yxy*map( pos + e.yxy ).x +
e.xxx*map( pos + e.xxx ).x );
/*
vec3 eps = vec3( 0.0005, 0.0, 0.0 );
@ -313,7 +313,7 @@ float calcAO( in vec3 pos, in vec3 nor )
occ += -(dd-hr)*sca;
sca *= 0.95;
}
return clamp( 1.0 - 3.0*occ, 0.0, 1.0 );
return clamp( 1.0 - 3.0*occ, 0.0, 1.0 );
}
// http://iquilezles.org/www/articles/checkerfiltering/checkerfiltering.htm
@ -324,11 +324,11 @@ float checkersGradBox( in vec2 p )
// analytical integral (box filter)
vec2 i = 2.0*(abs(fract((p-0.5*w)*0.5)-0.5)-abs(fract((p+0.5*w)*0.5)-0.5))/w;
// xor pattern
return 0.5 - 0.5*i.x*i.y;
return 0.5 - 0.5*i.x*i.y;
}
vec3 render( in vec3 ro, in vec3 rd )
{
{
vec3 col = vec3(0.7, 0.9, 1.0) +rd.y*0.8;
vec2 res = castRay(ro,rd);
float t = res.x;
@ -338,17 +338,17 @@ vec3 render( in vec3 ro, in vec3 rd )
vec3 pos = ro + t*rd;
vec3 nor = calcNormal( pos );
vec3 ref = reflect( rd, nor );
// material
// material
col = 0.45 + 0.35*sin( vec3(0.05,0.08,0.10)*(m-1.0) );
if( m<1.5 )
{
float f = checkersGradBox( 5.0*pos.xz );
col = 0.3 + f*vec3(0.1);
}
// lighting
// lighting
float occ = calcAO( pos, nor );
vec3 lig = normalize( vec3(cos(-0.4 * runTime), sin(0.7 * runTime), -0.6) );
vec3 hal = normalize( lig-rd );
@ -357,7 +357,7 @@ vec3 render( in vec3 ro, in vec3 rd )
float bac = clamp( dot( nor, normalize(vec3(-lig.x,0.0,-lig.z))), 0.0, 1.0 )*clamp( 1.0-pos.y,0.0,1.0);
float dom = smoothstep( -0.1, 0.1, ref.y );
float fre = pow( clamp(1.0+dot(nor,rd),0.0,1.0), 2.0 );
dif *= calcSoftshadow( pos, lig, 0.02, 2.5 );
dom *= calcSoftshadow( pos, ref, 0.02, 2.5 );
@ -399,22 +399,22 @@ void main()
// pixel coordinates
vec2 o = vec2(float(m),float(n)) / float(AA) - 0.5;
vec2 p = (-resolution.xy + 2.0*(gl_FragCoord.xy+o))/resolution.y;
#else
#else
vec2 p = (-resolution.xy + 2.0*gl_FragCoord.xy)/resolution.y;
#endif
// RAY: Camera is provided from raylib
//vec3 ro = vec3( -0.5+3.5*cos(0.1*time + 6.0*mo.x), 1.0 + 2.0*mo.y, 0.5 + 4.0*sin(0.1*time + 6.0*mo.x) );
vec3 ro = viewEye;
vec3 ta = viewCenter;
// camera-to-world transformation
mat3 ca = setCamera( ro, ta, 0.0 );
// ray direction
vec3 rd = ca * normalize( vec3(p.xy,2.0) );
// render
// render
vec3 col = render( ro, rd );
// gamma

View File

@ -34,7 +34,7 @@ void main()
// Draw circle layer
vec3 color = vec3(0.9, 0.16, 0.21);
vec4 layer2 = DrawCircle(fragCoord, position, radius, color);
// Blend the two layers
finalColor = mix(layer1, layer2, layer2.a);
}

View File

@ -41,7 +41,7 @@ void main()
// Scanlines method 2
float globalPos = (fragTexCoord.y + offset) * frequency;
float wavePos = cos((fract(globalPos) - 0.5)*3.14);
// Texel color fetching from texture sampler
vec4 texelColor = texture(texture0, fragTexCoord);

View File

@ -14,11 +14,11 @@ out vec4 finalColor;
// NOTE: Add here your custom variables
uniform vec2 resolution = vec2(800, 450);
void main()
void main()
{
float x = 1.0/resolution.x;
float y = 1.0/resolution.y;
vec4 horizEdge = vec4(0.0);
horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
horizEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y ))*2.0;
@ -26,7 +26,7 @@ void main()
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y - y))*1.0;
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y ))*2.0;
horizEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
vec4 vertEdge = vec4(0.0);
vertEdge -= texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y - y))*1.0;
vertEdge -= texture2D(texture0, vec2(fragTexCoord.x , fragTexCoord.y - y))*2.0;
@ -34,8 +34,8 @@ void main()
vertEdge += texture2D(texture0, vec2(fragTexCoord.x - x, fragTexCoord.y + y))*1.0;
vertEdge += texture2D(texture0, vec2(fragTexCoord.x , fragTexCoord.y + y))*2.0;
vertEdge += texture2D(texture0, vec2(fragTexCoord.x + x, fragTexCoord.y + y))*1.0;
vec3 edge = sqrt((horizEdge.rgb*horizEdge.rgb) + (vertEdge.rgb*vertEdge.rgb));
finalColor = vec4(edge, texture2D(texture0, fragTexCoord).a);
}

View File

@ -23,10 +23,10 @@ uniform float screenWidth; // Width of the screen
void main()
{
float alpha = 1.0;
// Get the position of the current fragment (screen coordinates!)
vec2 pos = vec2(gl_FragCoord.x, gl_FragCoord.y);
// Find out which spotlight is nearest
float d = 65000; // some high value
int fi = -1; // found index
@ -36,15 +36,15 @@ void main()
for (int j = 0; j < MAX_SPOTS; j++)
{
float dj = distance(pos, spots[j].pos) - spots[j].radius + spots[i].radius;
if (d > dj)
if (d > dj)
{
d = dj;
fi = i;
}
}
}
// d now equals distance to nearest spot...
// allowing for the different radii of all spotlights
if (fi != -1)
@ -56,8 +56,8 @@ void main()
else alpha = (d - spots[fi].inner) / (spots[fi].radius - spots[fi].inner);
}
}
// Right hand side of screen is dimly lit,
// Right hand side of screen is dimly lit,
// could make the threshold value user definable
if ((pos.x > screenWidth/2.0) && (alpha > 0.9)) alpha = 0.9;

View File

@ -27,16 +27,16 @@ void main()
vec2 texSize = vec2(renderWidth, renderHeight);
vec2 tc = fragTexCoord*texSize;
tc -= center;
float dist = length(tc);
if (dist < radius)
if (dist < radius)
{
float percent = (radius - dist)/radius;
float theta = percent*percent*angle*8.0;
float s = sin(theta);
float c = cos(theta);
tc = vec2(dot(tc, vec2(c, -s)), dot(tc, vec2(s, c)));
}