84 lines
2.3 KiB
Plaintext
84 lines
2.3 KiB
Plaintext
|
#version 330 core
|
||
|
|
|
||
|
|
in vec2 uvCoordinates;
|
||
|
|
flat in int atlasPage;
|
||
|
|
in vec2 paintUVCoordinates;
|
||
|
|
|
||
|
|
uniform sampler2DArray textureSampler;
|
||
|
|
|
||
|
|
uniform int paintType;
|
||
|
|
uniform vec4 paintColor;
|
||
|
|
|
||
|
|
uniform int paintGradientStopCount;
|
||
|
|
uniform vec4[16] paintGradientColors;
|
||
|
|
uniform float[16] paintGradientPositions;
|
||
|
|
uniform vec2[2] paintGradientEnds;
|
||
|
|
|
||
|
|
uniform float pxScale;
|
||
|
|
|
||
|
|
out vec4 out_Color;
|
||
|
|
|
||
|
|
vec4 solidColor(void)
|
||
|
|
{
|
||
|
|
return paintColor;
|
||
|
|
}
|
||
|
|
|
||
|
|
vec4 gammaMix(vec4 lCol, vec4 rCol, float ratio)
|
||
|
|
{
|
||
|
|
float gamma = 2.2;
|
||
|
|
float one_over_gamma = 1 / gamma;
|
||
|
|
|
||
|
|
vec4 ilCol = vec4(pow(lCol.r, gamma), pow(lCol.g, gamma), pow(lCol.b, gamma), lCol.a);
|
||
|
|
vec4 irCol = vec4(pow(rCol.r, gamma), pow(rCol.g, gamma), pow(rCol.b, gamma), rCol.a);
|
||
|
|
|
||
|
|
vec4 fCol = mix(ilCol, irCol, ratio);
|
||
|
|
|
||
|
|
return vec4(pow(fCol.r, one_over_gamma), pow(fCol.g, one_over_gamma), pow(fCol.b, one_over_gamma), fCol.a);
|
||
|
|
}
|
||
|
|
|
||
|
|
vec4 gradientColor(void)
|
||
|
|
{
|
||
|
|
float angle = atan(-paintGradientEnds[1].y + paintGradientEnds[0].y, paintGradientEnds[1].x - paintGradientEnds[0].x);
|
||
|
|
float rotatedStartX = paintGradientEnds[0].x * cos(angle) - paintGradientEnds[0].y * sin(angle);
|
||
|
|
float rotatedEndX = paintGradientEnds[1].x * cos(angle) - paintGradientEnds[1].y * sin(angle);
|
||
|
|
float d = rotatedEndX - rotatedStartX;
|
||
|
|
|
||
|
|
float pX = paintUVCoordinates.x * cos(angle) - paintUVCoordinates.y * sin(angle);
|
||
|
|
|
||
|
|
float mr = smoothstep(rotatedStartX + paintGradientPositions[0] * d, rotatedStartX + paintGradientPositions[1] * d, pX);
|
||
|
|
vec4 col = gammaMix(paintGradientColors[0], paintGradientColors[1], mr);
|
||
|
|
|
||
|
|
for (int i = 1; i < paintGradientStopCount - 1; i++)
|
||
|
|
{
|
||
|
|
mr = smoothstep(rotatedStartX + paintGradientPositions[i] * d, rotatedStartX + paintGradientPositions[i + 1] * d, pX);
|
||
|
|
col = gammaMix(col, paintGradientColors[i + 1], mr);
|
||
|
|
}
|
||
|
|
|
||
|
|
return col;
|
||
|
|
}
|
||
|
|
|
||
|
|
void main(void)
|
||
|
|
{
|
||
|
|
vec3 texCoords = vec3(uvCoordinates, atlasPage);
|
||
|
|
|
||
|
|
float threshold = 180.0 / 255.0 - 5.0 / pow(pxScale, 1.6); // Also help small text be readable
|
||
|
|
|
||
|
|
float signedDist = texture(textureSampler, texCoords).r - threshold;
|
||
|
|
|
||
|
|
vec4 col;
|
||
|
|
|
||
|
|
switch (paintType)
|
||
|
|
{
|
||
|
|
case 0:
|
||
|
|
col = solidColor();
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
col = gradientColor();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
col.a *= smoothstep(0, 2.4 / pxScale, signedDist);
|
||
|
|
|
||
|
|
out_Color = col;
|
||
|
|
}
|