From e00171d87191038372fd6a57299ed6c25e908a7c Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Thu, 5 Mar 2026 16:49:05 +0100
Subject: [PATCH] render/pixel_format: generate opaque substitute table via
 kdfs

---
 render/gen_pixel_format.sh  | 19 ++++++++++++++
 render/pixel_format.c       | 32 -----------------------
 render/pixel_format_table.c | 51 +++++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+), 32 deletions(-)

diff --git a/render/gen_pixel_format.sh b/render/gen_pixel_format.sh
index 587d97464..145cb4f7d 100755
--- a/render/gen_pixel_format.sh
+++ b/render/gen_pixel_format.sh
@@ -28,6 +28,17 @@ gen_opaque() {
 	'
 }
 
+gen_opaque_substitute() {
+	"$KDFS" compat --json --with 'DRM_FORMAT_*' --filter-channel=a --strip-channel=a 'DRM_FORMAT_*' | jq -r '
+		to_entries[]
+		| select((.value | to_entries[] | select(.value.little_endian and .value.big_endian) | length) > 0)
+		| (.key as $format | .value | to_entries[] | { format: $format, opaque_substitute: .key })
+		|
+			"	case \(.format):\n" +
+			"		return \(.opaque_substitute);"
+	'
+}
+
 gen_ycbcr() {
 	"$KDFS" show --json 'DRM_FORMAT_*' | jq -r '
 		to_entries[]
@@ -57,6 +68,14 @@ $(gen_opaque)
 	}
 }
 
+uint32_t pixel_format_get_opaque_substitute(uint32_t format) {
+	switch (format) {
+$(gen_opaque_substitute)
+	default:
+		return DRM_FORMAT_INVALID;
+	}
+}
+
 bool pixel_format_is_ycbcr(uint32_t format) {
 	switch (format) {
 $(gen_ycbcr)
diff --git a/render/pixel_format.c b/render/pixel_format.c
index d05d261bf..83f131393 100644
--- a/render/pixel_format.c
+++ b/render/pixel_format.c
@@ -81,35 +81,3 @@ bool pixel_format_info_check_stride(const struct wlr_pixel_format_info *fmt,
 bool pixel_format_has_alpha(uint32_t fmt) {
 	return !pixel_format_is_opaque(fmt);
 }
-
-uint32_t pixel_format_get_opaque_substitute(uint32_t fmt) {
-	switch (fmt) {
-	case DRM_FORMAT_ARGB8888:
-		return DRM_FORMAT_XRGB8888;
-	case DRM_FORMAT_ABGR8888:
-		return DRM_FORMAT_XBGR8888;
-	case DRM_FORMAT_RGBA8888:
-		return DRM_FORMAT_RGBX8888;
-	case DRM_FORMAT_BGRA8888:
-		return DRM_FORMAT_BGRX8888;
-	case DRM_FORMAT_RGBA4444:
-		return DRM_FORMAT_RGBX4444;
-	case DRM_FORMAT_BGRA4444:
-		return DRM_FORMAT_BGRX4444;
-	case DRM_FORMAT_RGBA5551:
-		return DRM_FORMAT_RGBX5551;
-	case DRM_FORMAT_BGRA5551:
-		return DRM_FORMAT_BGRX5551;
-	case DRM_FORMAT_ARGB1555:
-		return DRM_FORMAT_XRGB1555;
-	case DRM_FORMAT_ARGB2101010:
-		return DRM_FORMAT_XRGB2101010;
-	case DRM_FORMAT_ABGR2101010:
-		return DRM_FORMAT_XBGR2101010;
-	case DRM_FORMAT_ABGR16161616F:
-		return DRM_FORMAT_XBGR16161616F;
-	case DRM_FORMAT_ABGR16161616:
-		return DRM_FORMAT_XBGR16161616;
-	}
-	return DRM_FORMAT_INVALID;
-}
diff --git a/render/pixel_format_table.c b/render/pixel_format_table.c
index fc75e10a8..78f0737dc 100644
--- a/render/pixel_format_table.c
+++ b/render/pixel_format_table.c
@@ -518,6 +518,57 @@ bool pixel_format_is_opaque(uint32_t format) {
 	}
 }
 
+uint32_t pixel_format_get_opaque_substitute(uint32_t format) {
+	switch (format) {
+	case DRM_FORMAT_ABGR1555:
+		return DRM_FORMAT_XBGR1555;
+	case DRM_FORMAT_ABGR16161616:
+		return DRM_FORMAT_XBGR16161616;
+	case DRM_FORMAT_ABGR16161616F:
+		return DRM_FORMAT_XBGR16161616F;
+	case DRM_FORMAT_ABGR2101010:
+		return DRM_FORMAT_XBGR2101010;
+	case DRM_FORMAT_ABGR4444:
+		return DRM_FORMAT_XBGR4444;
+	case DRM_FORMAT_ABGR8888:
+		return DRM_FORMAT_XBGR8888;
+	case DRM_FORMAT_ARGB1555:
+		return DRM_FORMAT_XRGB1555;
+	case DRM_FORMAT_ARGB16161616:
+		return DRM_FORMAT_XRGB16161616;
+	case DRM_FORMAT_ARGB16161616F:
+		return DRM_FORMAT_XRGB16161616F;
+	case DRM_FORMAT_ARGB2101010:
+		return DRM_FORMAT_XRGB2101010;
+	case DRM_FORMAT_ARGB4444:
+		return DRM_FORMAT_XRGB4444;
+	case DRM_FORMAT_ARGB8888:
+		return DRM_FORMAT_XRGB8888;
+	case DRM_FORMAT_AVUY8888:
+		return DRM_FORMAT_XVUY8888;
+	case DRM_FORMAT_AYUV:
+		return DRM_FORMAT_XYUV8888;
+	case DRM_FORMAT_BGRA1010102:
+		return DRM_FORMAT_BGRX1010102;
+	case DRM_FORMAT_BGRA4444:
+		return DRM_FORMAT_BGRX4444;
+	case DRM_FORMAT_BGRA5551:
+		return DRM_FORMAT_BGRX5551;
+	case DRM_FORMAT_BGRA8888:
+		return DRM_FORMAT_BGRX8888;
+	case DRM_FORMAT_RGBA1010102:
+		return DRM_FORMAT_RGBX1010102;
+	case DRM_FORMAT_RGBA4444:
+		return DRM_FORMAT_RGBX4444;
+	case DRM_FORMAT_RGBA5551:
+		return DRM_FORMAT_RGBX5551;
+	case DRM_FORMAT_RGBA8888:
+		return DRM_FORMAT_RGBX8888;
+	default:
+		return DRM_FORMAT_INVALID;
+	}
+}
+
 bool pixel_format_is_ycbcr(uint32_t format) {
 	switch (format) {
 	case DRM_FORMAT_AVUY8888: