104 lines
3.2 KiB
GLSL
104 lines
3.2 KiB
GLSL
#pragma header
|
|
#extension GL_EXT_gpu_shader4 : enable
|
|
|
|
// Used in charter by waveforms -lunar
|
|
|
|
const vec3 gradient1 = vec3(114./255., 81./255., 135./255);
|
|
const vec3 gradient2 = vec3(144./255., 80./255., 186./255);
|
|
|
|
const vec4 outlinecolor = vec4(vec3(.1), .1);
|
|
const vec3 lowdetailcol = vec3(0., 0., 1.);
|
|
|
|
uniform vec2 textureRes;
|
|
uniform float pixelOffset;
|
|
|
|
uniform float playerPosition;
|
|
|
|
uniform sampler2D waveformTexture;
|
|
uniform ivec2 waveformSize;
|
|
|
|
uniform bool lowDetail;
|
|
|
|
float getAmplitude(vec2 pixel) {
|
|
float pixelID = floor((pixel.y+pixelOffset)/3.);
|
|
|
|
// TODO: INVESTIGATE THE 1.+ AND WHY IT WORKS (SRSLY I GOT NO CLUE) -lunar
|
|
vec2 wavePixel = vec2(int(pixelID)%waveformSize.x, 1.+floor(pixelID/waveformSize.x));
|
|
vec4 waveData = texture2D(waveformTexture, wavePixel / waveformSize);
|
|
|
|
switch (int(wavePixel.x)%3) {
|
|
case 0: return waveData.r; break;
|
|
case 1: return waveData.g; break;
|
|
case 2: return waveData.b; break;
|
|
}
|
|
return 0.;
|
|
}
|
|
|
|
bool inWaveForm(vec2 pixel, float width) {
|
|
float widthdiv2 = width/2.;
|
|
return pixel.x > widthdiv2 && pixel.x < textureRes.x-widthdiv2;
|
|
}
|
|
|
|
void highDetailWaveform(vec2 pixel, float amplitude, float ampwidth) {
|
|
if (inWaveForm(pixel, ampwidth)) {
|
|
vec3 gradientColor = mix(gradient1, gradient2, openfl_TextureCoordv.x);
|
|
gradientColor *= pixel.y+pixelOffset>playerPosition ? .7 : 1.;
|
|
|
|
float ampwidthHighlightCool = (1.-(amplitude)) * textureRes.x;
|
|
float remapCoord = (ampwidthHighlightCool/textureRes.x)/2.;
|
|
|
|
float mappedCoord = map(openfl_TextureCoordv.x, remapCoord, 1.-remapCoord, 0., 1.);
|
|
float hightlightAmount = 1.-(abs(mappedCoord-0.5)*2.);
|
|
|
|
gradientColor = mix(gradientColor, gradientColor * vec3(1.8), map(hightlightAmount, 0., 1., .5, 1.));
|
|
|
|
float ampwidthHighlight = (1.-(amplitude*(1./3.))) * textureRes.x;
|
|
if (inWaveForm(pixel, ampwidthHighlight)) {
|
|
float remapCoord = (ampwidthHighlight/textureRes.x)/2.;
|
|
|
|
float mappedCoord = map(openfl_TextureCoordv.x, remapCoord, 1.-remapCoord, 0., 1.);
|
|
float hightlightAmount = 1.-(abs(mappedCoord-0.5)*2.);
|
|
|
|
gradientColor = mix(gradientColor, gradientColor * vec3(1.8), map(hightlightAmount, 0., 1., .5, 1.));
|
|
}
|
|
|
|
gl_FragColor = vec4(vec3(gradientColor * mix(0.5, .8, amplitude))*openfl_Alphav, openfl_Alphav);
|
|
|
|
float lastAmplitude = getAmplitude(pixel - vec2(0., -1.));
|
|
float lastAmpwidth = (1.-lastAmplitude) * textureRes.x;
|
|
|
|
if (!inWaveForm(pixel, lastAmpwidth))
|
|
gl_FragColor -= outlinecolor*mix(0.5, .8, amplitude);
|
|
|
|
float nextAmplitude = getAmplitude(pixel - vec2(0., 1.));
|
|
float nextAmpwidth = (1.-nextAmplitude) * textureRes.x;
|
|
|
|
if (!inWaveForm(pixel, nextAmpwidth))
|
|
gl_FragColor -= outlinecolor*mix(0.5, .8, amplitude);
|
|
|
|
if (!inWaveForm(pixel, ampwidth+2.) && amplitude > 0.)
|
|
gl_FragColor -= outlinecolor;
|
|
}
|
|
}
|
|
|
|
void lowDetailWaveform(vec2 pixel, float amplitude, float ampwidth) {
|
|
if (inWaveForm(pixel, ampwidth)) {
|
|
vec3 color = lowdetailcol;
|
|
color *= pixel.y+pixelOffset>playerPosition ? .6 : 1.;
|
|
|
|
gl_FragColor = vec4(color, 1.);
|
|
}
|
|
}
|
|
|
|
void main()
|
|
{
|
|
vec2 pixel = openfl_TextureCoordv * textureRes;
|
|
|
|
float amplitude = getAmplitude(pixel);
|
|
float ampwidth = (1.-amplitude) * textureRes.x;
|
|
|
|
if (lowDetail)
|
|
lowDetailWaveform(pixel, amplitude, ampwidth);
|
|
else
|
|
highDetailWaveform(pixel, amplitude, ampwidth);
|
|
} |