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Merge branch 'glsl-switch' into 'master'

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glsl: don't use switch statements

See merge request GNOME/gtk!1036
This commit is contained in:
Matthias Clasen 2019-08-02 16:59:27 +00:00
commit 660f46fcb1
1 changed files with 68 additions and 19 deletions
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87
gsk/resources/glsl/blend.fs.glsl
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@ -263,25 +263,74 @@ void main() {
vec4 top_color = Texture(u_source2, vUv);
vec4 result;
switch(u_mode) {
case 0: result = normal(top_color, bottom_color); break;
case 1: result = multiply(top_color, bottom_color); break;
case 2: result = screen(top_color, bottom_color); break;
case 3: result = overlay(top_color, bottom_color); break;
case 4: result = darken(top_color, bottom_color); break;
case 5: result = lighten(top_color, bottom_color); break;
case 6: result = color_dodge(top_color, bottom_color); break;
case 7: result = color_burn(top_color, bottom_color); break;
case 8: result = hard_light(top_color, bottom_color); break;
case 9: result = soft_light(top_color, bottom_color); break;
case 10: result = difference(top_color, bottom_color); break;
case 11: result = exclusion(top_color, bottom_color); break;
case 12: result = color(top_color, bottom_color); break;
case 13: result = hue(top_color, bottom_color); break;
case 14: result = saturation(top_color, bottom_color); break;
case 15: result = luminosity(top_color, bottom_color); break;
default: discard;
}
if (u_mode == 0)
{
result = normal(top_color, bottom_color);
}
else if (u_mode == 1)
{
result = multiply(top_color, bottom_color);
}
else if (u_mode == 2)
{
result = screen(top_color, bottom_color);
}
else if (u_mode == 3)
{
result = overlay(top_color, bottom_color);
}
else if (u_mode == 4)
{
result = darken(top_color, bottom_color);
}
else if (u_mode == 5)
{
result = lighten(top_color, bottom_color);
}
else if (u_mode == 6)
{
result = color_dodge(top_color, bottom_color);
}
else if (u_mode == 7)
{
result = color_burn(top_color, bottom_color);
}
else if (u_mode == 8)
{
result = hard_light(top_color, bottom_color);
}
else if (u_mode == 9)
{
result = soft_light(top_color, bottom_color);
}
else if (u_mode == 10)
{
result = difference(top_color, bottom_color);
}
else if (u_mode == 11)
{
result = exclusion(top_color, bottom_color);
}
else if (u_mode == 12)
{
result = color(top_color, bottom_color);
}
else if (u_mode == 13)
{
result = hue(top_color, bottom_color);
}
else if (u_mode == 14)
{
result = saturation(top_color, bottom_color);
}
else if (u_mode == 15)
{
result = luminosity(top_color, bottom_color);
}
else
{
discard;
}
setOutputColor(result * u_alpha);
}