mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-09-20 17:31:32 +00:00
0512c88ea8
The $escape+S keybinding now cycles through the available scale algorithms. This allows the user to switch between algorithms if the automatic detection turns out to be problematic. The algorithms are renumbered so that 0 can be LG_SCALE_AUTO.
101 lines
2.4 KiB
GLSL
101 lines
2.4 KiB
GLSL
#version 300 es
|
|
|
|
#define EGL_SCALE_AUTO 0
|
|
#define EGL_SCALE_NEAREST 1
|
|
#define EGL_SCALE_LINEAR 2
|
|
#define EGL_SCALE_MAX 3
|
|
|
|
in highp vec2 uv;
|
|
out highp vec4 color;
|
|
|
|
uniform sampler2D sampler1;
|
|
|
|
uniform int scaleAlgo;
|
|
uniform highp vec2 size;
|
|
uniform int rotate;
|
|
|
|
uniform int nv;
|
|
uniform highp float nvGain;
|
|
uniform int cbMode;
|
|
|
|
void main()
|
|
{
|
|
highp vec2 ruv;
|
|
if (rotate == 0) // 0
|
|
{
|
|
ruv = uv;
|
|
}
|
|
else if (rotate == 1) // 90
|
|
{
|
|
ruv.x = uv.y;
|
|
ruv.y = -uv.x + 1.0f;
|
|
}
|
|
else if (rotate == 2) // 180
|
|
{
|
|
ruv.x = -uv.x + 1.0f;
|
|
ruv.y = -uv.y + 1.0f;
|
|
}
|
|
else if (rotate == 3) // 270
|
|
{
|
|
ruv.x = -uv.y + 1.0f;
|
|
ruv.y = uv.x;
|
|
}
|
|
|
|
switch (scaleAlgo)
|
|
{
|
|
case EGL_SCALE_NEAREST:
|
|
color = texelFetch(sampler1, ivec2(ruv * size), 0);
|
|
break;
|
|
|
|
case EGL_SCALE_LINEAR:
|
|
color = texture(sampler1, ruv);
|
|
break;
|
|
}
|
|
|
|
if (cbMode > 0)
|
|
{
|
|
highp float L = (17.8824000 * color.r) + (43.516100 * color.g) + (4.11935 * color.b);
|
|
highp float M = (03.4556500 * color.r) + (27.155400 * color.g) + (3.86714 * color.b);
|
|
highp float S = (00.0299566 * color.r) + (00.184309 * color.g) + (1.46709 * color.b);
|
|
highp float l, m, s;
|
|
|
|
if (cbMode == 1) // Protanope
|
|
{
|
|
l = 0.0f * L + 2.02344f * M + -2.52581f * S;
|
|
m = 0.0f * L + 1.0f * M + 0.0f * S;
|
|
s = 0.0f * L + 0.0f * M + 1.0f * S;
|
|
}
|
|
else if (cbMode == 2) // Deuteranope
|
|
{
|
|
l = 1.000000 * L + 0.0f * M + 0.00000 * S;
|
|
m = 0.494207 * L + 0.0f * M + 1.24827 * S;
|
|
s = 0.000000 * L + 0.0f * M + 1.00000 * S;
|
|
}
|
|
else if (cbMode == 3) // Tritanope
|
|
{
|
|
l = 1.000000 * L + 0.000000 * M + 0.0 * S;
|
|
m = 0.000000 * L + 1.000000 * M + 0.0 * S;
|
|
s = -0.395913 * L + 0.801109 * M + 0.0 * S;
|
|
}
|
|
|
|
highp vec4 error;
|
|
error.r = ( 0.080944447900 * l) + (-0.13050440900 * m) + ( 0.116721066 * s);
|
|
error.g = (-0.010248533500 * l) + ( 0.05401932660 * m) + (-0.113614708 * s);
|
|
error.b = (-0.000365296938 * l) + (-0.00412161469 * m) + ( 0.693511405 * s);
|
|
error.a = 0.0;
|
|
|
|
error = color - error;
|
|
color.g += (error.r * 0.7) + (error.g * 1.0);
|
|
color.b += (error.r * 0.7) + (error.b * 1.0);
|
|
}
|
|
|
|
if (nv == 1)
|
|
{
|
|
highp float lumi = 1.0 - (0.2126 * color.r + 0.7152 * color.g + 0.0722 * color.b);
|
|
color *= 1.0 + lumi;
|
|
color *= nvGain;
|
|
}
|
|
|
|
color.a = 1.0;
|
|
}
|