nyxexprs/pkgs/applications/terminal-emulators/foot-transparent/0001-fullscreen-transparency.patch

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ceab4d5..146e7992 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -334,7 +334,8 @@
   instead of the one least recently.
 * Starlight theme (the default theme) updated to [V4][starlight-v4]
 * Background transparency (alpha) is now disabled in fullscreened
-  windows ([#1416][1416]).
+  windows ([#1416][1416]) by default but can be enabled with
+  `fullscreen_alpha`.
 * Foot server systemd units now use the standard
   graphical-session.target ([#1281][1281]).
 * If `$XDG_RUNTIME_DIR/foot-$WAYLAND_DISPLAY.sock` does not exist,
diff --git a/meson.build b/meson.build
index 719352bc..eb38c0f8 100644
--- a/meson.build
+++ b/meson.build
@@ -73,6 +73,9 @@ add_project_arguments(
   (get_option('b_pgo') == 'use'
     ? ['-DFOOT_PGO_ENABLED=1']
     : []) +
+  (get_option('fullscreen_alpha')
+    ? ['-DFOOT_FULLSCREEN_ALPHA_ENABLED=1']
+    : []) +
   cc.get_supported_arguments(
     ['-pedantic',
      '-fstrict-aliasing',
@@ -374,6 +377,7 @@ summary(
     'Documentation': scdoc.found(),
     'Themes': get_option('themes'),
     'IME': get_option('ime'),
+    'Fullscreen alpha': get_option('fullscreen_alpha'),
     'Grapheme clustering': utf8proc.found(),
     'utmp backend': utmp_backend,
     'utmp helper default path': utmp_default_helper_path,
diff --git a/meson_options.txt b/meson_options.txt
index ab7a07be..7919431e 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -7,6 +7,9 @@ option('themes', type: 'boolean', value: true,
 option('ime', type: 'boolean', value: true,
        description: 'IME (Input Method Editor) support')

+option('fullscreen_alpha', type: 'boolean', value: false,
+    description: 'Enables transparency on fullscreen windows')
+
 option('grapheme-clustering', type: 'feature',
        description: 'Enables grapheme clustering using libutf8proc. Requires fcft with harfbuzz support to be useful.')

diff --git a/render.c b/render.c
index 91472027..847984a9 100644
--- a/render.c
+++ b/render.c
@@ -525,6 +525,13 @@ render_cell(struct terminal *term, pixman_image_t *pix, pixman_region32_t *damag
         }

         else if (cell->attrs.bg_src == COLOR_DEFAULT) {
+#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
+            /*
+             * Note: I don't care about the stupid ass Wayland
+             * protocol I want transparent fullscreen windows.
+             */
+            alpha = term->colors.alpha;
+#else
             if (term->window->is_fullscreen) {
                 /*
                  * Note: disable transparency when fullscreened.
@@ -562,6 +569,7 @@ render_cell(struct terminal *term, pixman_image_t *pix, pixman_region32_t *damag
             } else {
                 alpha = term->colors.alpha;
             }
+#endif
         }
     }

@@ -900,6 +908,10 @@ render_margin(struct terminal *term, struct buffer *buf,
     const int bmargin = term->height - term->margins.bottom;
     const int line_count = end_line - start_line;

+#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
+    uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
+    pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, term->colors.alpha);
+#else
     const uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
     uint16_t alpha = term->colors.alpha;

@@ -909,6 +921,7 @@ render_margin(struct terminal *term, struct buffer *buf,
     }

     pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, alpha);
+#endif

     pixman_image_fill_rectangles(
         PIXMAN_OP_SRC, buf->pix[0], &bg, 4,
@@ -2817,8 +2830,14 @@ grid_render(struct terminal *term)
     xassert(term->height > 0);

     struct buffer_chain *chain = term->render.chains.grid;
+
+#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
+    bool use_alpha = term->colors.alpha != 0xffff;
+#else
     bool use_alpha = !term->window->is_fullscreen &&
                      term->colors.alpha != 0xffff;
+#endif
+
     struct buffer *buf = shm_get_buffer(
         chain, term->width, term->height, use_alpha);