31 lines
1.0 KiB
Plaintext
31 lines
1.0 KiB
Plaintext
|
shader_type canvas_item;
|
||
|
|
|
||
|
|
void fragment() {
|
||
|
|
float vrs = texture(TEXTURE, UV).r * 255.0;
|
||
|
|
|
||
|
|
// Map valid entries to human-visible colors.
|
||
|
|
// This is only used if using the red channel colors between 0.0/255 and 10.0/255,
|
||
|
|
// rather than relying on Godot to aliases the output colors below to variable shading rates.
|
||
|
|
//
|
||
|
|
// `vrs_texture.png` in this project already uses the aliased colors for convenience,
|
||
|
|
// but `vrs_texture_original.png` does not.
|
||
|
|
// The output shading rate from those two textures is identical.
|
||
|
|
if (vrs == 0.0) { // 1x1
|
||
|
|
COLOR = vec4(0.0, 0.0, 0.0, 1.0);
|
||
|
|
} else if (vrs == 1.0) { // 1x2
|
||
|
|
COLOR = vec4(0.0, 0.5, 0.0, 1.0);
|
||
|
|
} else if (vrs == 4.0) { // 2x1
|
||
|
|
COLOR = vec4(0.5, 0.0, 0.0, 1.0);
|
||
|
|
} else if (vrs == 5.0) { // 2x2
|
||
|
|
COLOR = vec4(0.5, 0.5, 0.0, 1.0);
|
||
|
|
} else if (vrs == 6.0) { // 2x4
|
||
|
|
COLOR = vec4(0.5, 1.0, 0.0, 1.0);
|
||
|
|
} else if (vrs == 9.0) { // 4x2
|
||
|
|
COLOR = vec4(1.0, 0.5, 0.0, 1.0);
|
||
|
|
} else if (vrs == 10.0) { // 4x4
|
||
|
|
COLOR = vec4(1.0, 1.0, 0.0, 1.0);
|
||
|
|
} else {
|
||
|
|
COLOR = vec4(1.0, 0.5, 1.0, 1.0);
|
||
|
|
}
|
||
|
|
}
|