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Update shader for color wheel for normal map to match #3114 behavior

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This commit is contained in:
David Capello 2022-11-16 11:50:15 -03:00
parent b2973f71d7
commit 8cda612be5
1 changed files with 32 additions and 9 deletions
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41
src/app/ui/color_wheel.cpp
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@ -95,6 +95,38 @@ half4 main(vec2 fragcoord) {
half r = length(d);
if (r <= 0.5) {
if (iMode == 2) { // Normal map mode
float nd = r / 0.5;
half4 rgba = half4(0, 0, 0, 1);
float blueAngle;
if (iDiscrete != 0) {
float angle;
if (nd < 1.0/6.0)
angle = 0;
else {
angle = atan(-d.y, d.x);
angle = floor(180.0 * angle / PI) + 360;
angle = floor((angle+15) / 30) * 30;
angle = PI * angle / 180.0;
}
nd = (floor(nd * 6.0 + 1.0) - 1) / 5.0;
float blueAngleDegrees = floor(90.0 * (6.0 - floor(nd * 6.0)) / 5.0);
blueAngle = PI * blueAngleDegrees / 180.0;
rgba.r = 0.5 + 0.5 * nd * cos(angle);
rgba.g = 0.5 + 0.5 * nd * sin(angle);
}
else {
rgba.r = 0.5 + d.x;
rgba.g = 0.5 - d.y;
blueAngle = acos(nd);
}
rgba.b = 0.5 + 0.5 * sin(blueAngle);
return clamp(rgba, 0.0, 1.0);
}
half a = atan(-d.y, d.x);
half hue = (floor(180.0 * a / PI)
+ 180 // To avoid [-180,0) range
@ -112,15 +144,6 @@ half4 main(vec2 fragcoord) {
}
hue /= 360.0;
if (iMode == 2) { // Normal map mode
float di = 0.5 * r / 0.5;
half3 rgb = half3(0.5+di*cos(a), 0.5+di*sin(a), 1.0-di);
return half4(
clamp(rgb.x, 0, 1),
clamp(rgb.y, 0, 1),
clamp(rgb.z, 0.5, 1), 1);
}
half sat = r / 0.5;
if (iDiscrete != 0) {
sat *= 120.0;