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Funkin
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Code Issues Releases Wiki Activity

SHADERRRR

This commit is contained in:
Cameron Taylor 2021-03-20 14:55:29 -04:00
parent 9aa59d679e
commit 3661a8cd8c
2 changed files with 32 additions and 33 deletions
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13
source/TitleState.hx
View File

@ -1,9 +1,5 @@
package;
#if desktop
import Discord.DiscordClient;
import sys.thread.Thread;
#end
import flixel.FlxG;
import flixel.FlxSprite;
import flixel.addons.transition.FlxTransitionSprite.GraphicTransTileDiamond;
@ -21,9 +17,15 @@ import flixel.util.FlxTimer;
import io.newgrounds.NG;
import lime.app.Application;
import openfl.Assets;
import shaderslmfao.ColorSwap;
using StringTools;
#if desktop
import Discord.DiscordClient;
import sys.thread.Thread;
#end
class TitleState extends MusicBeatState
{
static var initialized:Bool = false;
@ -158,6 +160,9 @@ class TitleState extends MusicBeatState
gfDance.animation.addByIndices('danceRight', 'gfDance', [15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29], "", 24, false);
gfDance.antialiasing = true;
add(gfDance);
gfDance.shader = new ColorSwap().shader;
add(logoBl);
titleText = new FlxSprite(100, FlxG.height * 0.8);

52
source/shaderslmfao/ColorSwap.hx
View File

@ -12,18 +12,12 @@ class ColorSwap
public function new():Void
{
shader = new ColorSwapShader();
shader.colorOld.value = [];
shader.colorNew.value = [];
}
function set_colorToReplace(color:FlxColor):FlxColor
{
colorToReplace = color;
shader.colorOld.value[0] = color.red;
shader.colorOld.value[1] = color.green;
shader.colorOld.value[2] = color.blue;
return color;
}
@ -31,10 +25,6 @@ class ColorSwap
{
newColor = color;
shader.colorNew.value[0] = color.red;
shader.colorNew.value[1] = color.green;
shader.colorNew.value[2] = color.blue;
return color;
}
}
@ -44,10 +34,6 @@ class ColorSwapShader extends FlxShader
@:glFragmentSource('
#pragma header
uniform vec3 colorOld;
uniform vec3 colorNew;
uniform float u_time;
vec3 normalizeColor(vec3 color)
{
return vec3(
@ -57,29 +43,37 @@ class ColorSwapShader extends FlxShader
);
}
vec3 hueShift(vec3 color, float hue) {
const vec3 k = vec3(0.57735, 0.57735, 0.57735);
float cosAngle = cos(hue);
return vec3(color * cosAngle + cross(k, color) * sin(hue) + k * dot(k, color) * (1.0 - cosAngle));
vec3 rgb2hsv(vec3 c)
{
vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));
vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));
float d = q.x - min(q.w, q.y);
float e = 1.0e-10;
return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
}
vec3 hsv2rgb(vec3 c)
{
vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www);
return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y);
}
void main()
{
vec4 pixel = texture2D(bitmap, openfl_TextureCoordv);
vec4 color = flixel_texture2D(bitmap, openfl_TextureCoordv);
vec3 eps = vec3(0.02, 0.02, 0.02);
vec4 swagColor = vec4(rgb2hsv(vec3(color[0], color[1], color[2])), color[3]);
// [0] is the hue???
swagColor[0] += 2;
// swagColor[1] += 0.5;
vec3 colorOldNormalized = normalizeColor(colorOld);
vec3 colorNewNormalized = normalizeColor(colorNew);
color = vec4(hsv2rgb(vec3(swagColor[0], swagColor[1], swagColor[2])), swagColor[3]);
if (all(greaterThanEqual(pixel, vec4(colorOldNormalized - eps, 1.0)) ) && all(lessThanEqual(pixel, vec4(colorOldNormalized + eps, 1.0)) )
)
{
pixel = vec4(hueShift(colorOldNormalized, 0.7), 1.0);
}
gl_FragColor = pixel;
gl_FragColor = color;
}
')