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render/color, render/vulkan: add support for PQ transfer function

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This commit is contained in:
Simon Ser 2025-01-28 12:15:51 +01:00
parent 8430a1922d
commit 4470683591
4 changed files with 56 additions and 17 deletions
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19
include/render/color.h
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@ -6,7 +6,7 @@
#include <wlr/util/addon.h>
enum wlr_color_transform_type {
COLOR_TRANSFORM_SRGB,
COLOR_TRANSFORM_INVERSE_EOTF,
COLOR_TRANSFORM_LCMS2,
COLOR_TRANSFORM_LUT_3X1D,
};
@ -18,8 +18,11 @@ struct wlr_color_transform {
enum wlr_color_transform_type type;
};
void wlr_color_transform_init(struct wlr_color_transform *tr,
enum wlr_color_transform_type type);
struct wlr_color_transform_inverse_eotf {
struct wlr_color_transform base;
enum wlr_color_transfer_function tf;
};
/**
* The formula is approximated via three 1D look-up tables. The flat lut_3x1d
@ -36,6 +39,9 @@ struct wlr_color_transform_lut_3x1d {
size_t dim;
};
void wlr_color_transform_init(struct wlr_color_transform *tr,
enum wlr_color_transform_type type);
/**
* Get a struct wlr_color_transform_lcms2 from a generic struct wlr_color_transform.
* Asserts that the base type is COLOR_TRANSFORM_LCMS2.
@ -51,6 +57,13 @@ void color_transform_lcms2_finish(struct wlr_color_transform_lcms2 *tr);
void color_transform_lcms2_eval(struct wlr_color_transform_lcms2 *tr,
float out[static 3], const float in[static 3]);
/**
* Gets a wlr_color_transform_inverse_eotf from a generic wlr_color_transform.
* Asserts that the base type is COLOR_TRANSFORM_INVERSE_EOTF
*/
struct wlr_color_transform_inverse_eotf *wlr_color_transform_inverse_eotf_from_base(
struct wlr_color_transform *tr);
/**
* Get a struct wlr_color_transform_lut_3x1d from a generic
* struct wlr_color_transform. Asserts that the base type is