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color-management: use more consistent naming

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This commit is contained in:
Julian Orth 2025-09-05 13:45:09 +02:00
parent 32db933242
commit 83e79b68e6
65 changed files with 439 additions and 510 deletions
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113
src/gfx_apis/vulkan/shaders/transfer_functions.glsl
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@ -1,113 +0,0 @@
#ifndef TRANSFER_FUNCTIONS_GLSL
#define TRANSFER_FUNCTIONS_GLSL
#include "frag_spec_const.glsl"
#define TF_LINEAR 1
#define TF_ST2084_PQ 2
#define TF_GAMMA24 3
#define TF_GAMMA22 4
#define TF_GAMMA28 5
#define TF_ST240 6
#define TF_LOG100 8
#define TF_LOG316 9
#define TF_ST428 10
vec3 eotf_st2084_pq(vec3 c) {
c = clamp(c, 0.0, 1.0);
vec3 cp = pow(c, vec3(1.0 / 78.84375));
vec3 num = max(cp - vec3(0.8359375), 0.0);
vec3 den = vec3(18.8515625) - vec3(18.6875) * cp;
return pow(num / den, vec3(1.0 / 0.1593017578125));
}
vec3 oetf_st2084_pq(vec3 c) {
c = clamp(c, 0.0, 1.0);
vec3 num = vec3(0.8359375) + vec3(18.8515625) * pow(c, vec3(0.1593017578125));
vec3 den = vec3(1.0) + vec3(18.6875) * pow(c, vec3(0.1593017578125));
return pow(num / den, vec3(78.84375));
}
vec3 eotf_st240(vec3 c) {
return mix(
c * vec3(1.0 / 4.0),
pow((c + vec3(0.1115)) * vec3(1.0 / 1.1115), vec3(1.0 / 0.45)),
greaterThanEqual(c, vec3(0.0913))
);
}
vec3 oetf_st240(vec3 c) {
return mix(
vec3(4.0) * c,
vec3(1.1115) * pow(c, vec3(0.45)) - vec3(0.1115),
greaterThanEqual(c, vec3(0.0228))
);
}
vec3 eotf_log100(vec3 c) {
return pow(vec3(10), vec3(2.0) * (c - vec3(1.0)));
}
vec3 oetf_log100(vec3 c) {
c = clamp(c, 0.0, 1.0);
return mix(
vec3(0.0),
vec3(1.0) + log2(c) / vec3(log2(10)) / vec3(2.0),
greaterThanEqual(c, vec3(0.01))
);
}
vec3 eotf_log316(vec3 c) {
return pow(vec3(10), vec3(2.5) * (c - vec3(1.0)));
}
vec3 oetf_log316(vec3 c) {
c = clamp(c, 0.0, 1.0);
return mix(
vec3(0.0),
vec3(1.0) + log2(c) / vec3(log2(10)) / vec3(2.5),
greaterThanEqual(c, vec3(sqrt(10) / 1000.0))
);
}
vec3 eotf_st428(vec3 c) {
c = max(c, 0.0);
return pow(c, vec3(2.6)) * vec3(52.37 / 48.0);
}
vec3 oetf_st428(vec3 c) {
c = max(c, 0.0);
return pow(vec3(48.0) * c / vec3(52.37), vec3(1.0 / 2.6));
}
vec3 apply_eotf(vec3 c) {
switch (eotf) {
case TF_LINEAR: return c;
case TF_ST2084_PQ: return eotf_st2084_pq(c);
case TF_GAMMA24: return sign(c) * pow(abs(c), vec3(2.4));
case TF_GAMMA22: return sign(c) * pow(abs(c), vec3(2.2));
case TF_GAMMA28: return sign(c) * pow(abs(c), vec3(2.8));
case TF_ST240: return eotf_st240(c);
case TF_LOG100: return eotf_log100(c);
case TF_LOG316: return eotf_log316(c);
case TF_ST428: return eotf_st428(c);
default: return c;
}
}
vec3 apply_oetf(vec3 c) {
switch (oetf) {
case TF_LINEAR: return c;
case TF_ST2084_PQ: return oetf_st2084_pq(c);
case TF_GAMMA24: return sign(c) * pow(abs(c), vec3(1.0 / 2.4));
case TF_GAMMA22: return sign(c) * pow(abs(c), vec3(1.0 / 2.2));
case TF_GAMMA28: return sign(c) * pow(abs(c), vec3(1.0 / 2.8));
case TF_ST240: return oetf_st240(c);
case TF_LOG100: return oetf_log100(c);
case TF_LOG316: return oetf_log316(c);
case TF_ST428: return oetf_st428(c);
default: return c;
}
}
#endif