From 78dee83d77b14180c75386523b5dc877bebbebbd Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Fri, 14 Apr 2023 17:14:41 +0100
Subject: [PATCH] screencast: add fallback for linear modifier

---
 src/screencast/pipewire_screencast.c | 3 +++
 src/screencast/screencast_common.c   | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/src/screencast/pipewire_screencast.c b/src/screencast/pipewire_screencast.c
index 17f4c27..28b7716 100644
--- a/src/screencast/pipewire_screencast.c
+++ b/src/screencast/pipewire_screencast.c
@@ -241,6 +241,9 @@ static void pwr_handle_stream_param_changed(void *data, uint32_t id,
 					flags = cast->ctx->state->config->screencast_conf.force_mod_linear ?
 						GBM_BO_USE_RENDERING | GBM_BO_USE_LINEAR : GBM_BO_USE_RENDERING;
 					break;
+				case DRM_FORMAT_MOD_LINEAR:
+					flags = GBM_BO_USE_RENDERING | GBM_BO_USE_LINEAR;
+					break;
 				default:
 					continue;
 				}
diff --git a/src/screencast/screencast_common.c b/src/screencast/screencast_common.c
index 2cf4976..58cdf97 100644
--- a/src/screencast/screencast_common.c
+++ b/src/screencast/screencast_common.c
@@ -153,6 +153,12 @@ struct xdpw_buffer *xdpw_buffer_create(struct xdpw_screencast_instance *cast,
 				frame_info->format, flags);
 		}
 
+		// Fallback for linear buffers via the implicit api
+		if (buffer->bo == NULL && cast->pwr_format.modifier == DRM_FORMAT_MOD_LINEAR) {
+			buffer->bo = gbm_bo_create(cast->ctx->gbm, frame_info->width, frame_info->height,
+					frame_info->format, flags | GBM_BO_USE_LINEAR);
+		}
+
 		if (buffer->bo == NULL) {
 			logprint(ERROR, "xdpw: failed to create gbm_bo");
 			free(buffer);