You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.0 KiB
43 lines
1.0 KiB
#version 450
|
|
|
|
layout (input_attachment_index = 0, binding = 0) uniform subpassInput in_color;
|
|
|
|
layout(set = 1, binding = 0) uniform sampler3D lut_3d;
|
|
|
|
layout(location = 0) in vec2 uv;
|
|
layout(location = 0) out vec4 out_color;
|
|
|
|
/* struct wlr_vk_frag_output_pcr_data */
|
|
layout(push_constant) uniform UBO {
|
|
layout(offset = 80) float lut_3d_offset;
|
|
float lut_3d_scale;
|
|
} data;
|
|
|
|
float linear_channel_to_srgb(float x) {
|
|
return max(min(x * 12.92, 0.04045), 1.055 * pow(x, 1. / 2.4) - 0.055);
|
|
}
|
|
|
|
vec4 linear_color_to_srgb(vec4 color) {
|
|
if (color.a == 0) {
|
|
return vec4(0);
|
|
}
|
|
color.rgb /= color.a;
|
|
color.rgb = vec3(
|
|
linear_channel_to_srgb(color.r),
|
|
linear_channel_to_srgb(color.g),
|
|
linear_channel_to_srgb(color.b)
|
|
);
|
|
color.rgb *= color.a;
|
|
return color;
|
|
}
|
|
|
|
void main() {
|
|
vec4 val = subpassLoad(in_color).rgba;
|
|
|
|
// temporary code to use the 3d look up table; to be dropped next commit
|
|
vec3 pos = data.lut_3d_offset + vec3(0.5,0.5,0.5) * data.lut_3d_scale;
|
|
val.rgb *= texture(lut_3d, pos).rgb;
|
|
|
|
out_color = linear_color_to_srgb(val);
|
|
}
|