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vulkan: clamp colors in transfer functions

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This commit is contained in:
Julian Orth 2025-04-21 11:24:10 +02:00
parent e507758fc5
commit 70baaaaeee
1 changed files with 7 additions and 4 deletions
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11
src/gfx_apis/vulkan/shaders/transfer_functions.glsl
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@ -58,6 +58,7 @@ vec3 oetf_ext_srgb(vec3 c) {
}
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;
@ -130,10 +131,12 @@ vec3 oetf_log316(vec3 c) {
}
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));
}
@ -143,8 +146,8 @@ vec3 apply_eotf(vec3 c) {
case TF_LINEAR: return c;
case TF_ST2084_PQ: return eotf_st2084_pq(c);
case TF_BT1886: return eotf_bt1886(c);
case TF_GAMMA22: return pow(c, vec3(2.2));
case TF_GAMMA28: return pow(c, vec3(2.8));
case TF_GAMMA22: return pow(max(c, 0.0), vec3(2.2));
case TF_GAMMA28: return pow(max(c, 0.0), vec3(2.8));
case TF_ST240: return eotf_st240(c);
case TF_EXT_SRGB: return eotf_ext_srgb(c);
case TF_LOG100: return eotf_log100(c);
@ -160,8 +163,8 @@ vec3 apply_oetf(vec3 c) {
case TF_LINEAR: return c;
case TF_ST2084_PQ: return oetf_st2084_pq(c);
case TF_BT1886: return oetf_bt1886(c);
case TF_GAMMA22: return pow(c, vec3(1.0 / 2.2));
case TF_GAMMA28: return pow(c, vec3(1.0 / 2.8));
case TF_GAMMA22: return pow(max(c, 0.0), vec3(1.0 / 2.2));
case TF_GAMMA28: return pow(max(c, 0.0), vec3(1.0 / 2.8));
case TF_ST240: return oetf_st240(c);
case TF_EXT_SRGB: return oetf_ext_srgb(c);
case TF_LOG100: return oetf_log100(c);