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render: don't infer luminance multipliers from color TF

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Make scene pass them explicitly instead. Ref #3995
This commit is contained in:
Félix Poisot 2026-01-11 13:59:43 +00:00
parent 68052f34d3
commit 5a40da7e15
6 changed files with 36 additions and 23 deletions
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9
types/output/cursor.c
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@ -512,6 +512,15 @@ bool output_cursor_refresh_color_transform(struct wlr_output_cursor *output_curs
wlr_color_primaries_from_named(&primaries, img_desc->primaries);
float matrix[9];
wlr_color_primaries_transform_absolute_colorimetric(&primaries_srgb, &primaries, matrix);
// Source is sRGB, which has reference == max
struct wlr_color_luminances dst_lum;
wlr_color_transfer_function_get_default_luminance(img_desc->transfer_function, &dst_lum);
float luminance_multiplier = dst_lum.reference / dst_lum.max;
for (int i = 0; i < 9; ++i) {
matrix[i] *= luminance_multiplier;
}
struct wlr_color_transform *transforms[] = {
wlr_color_transform_init_matrix(matrix),
wlr_color_transform_init_linear_to_inverse_eotf(img_desc->transfer_function),