1From b202ce51f7b68c460fcd1b6d9c3ffa8aaf2baaf6 Mon Sep 17 00:00:00 2001
2From: Marek Vasut <marex@denx.de>
3Date: Tue, 12 Mar 2024 19:05:38 +0100
4Subject: [PATCH 6/6] Add SDL2 example support
5
6Extend the main.c to support both legacy fbdev, DRM/KMS, SDL2 initialization.
7The SDL2 window resolution can be configured using environment variables
8LV_VIDEO_WIDTH and LV_VIDEO_HEIGHT and defaults to 800 x 480 .
9
10To use legacy fbdev support, adjust lv_conf.h as follows:
11LV_USE_LINUX_FBDEV=1
12LV_USE_LINUX_DRM=0
13LV_USE_SDL=0
14
15To use DRM/KMS support, adjust lv_conf.h as follows:
16LV_USE_LINUX_FBDEV=0
17LV_USE_LINUX_DRM=1
18LV_USE_SDL=0
19
20To use SDL2 support, adjust lv_conf.h as follows:
21LV_USE_LINUX_FBDEV=0
22LV_USE_LINUX_DRM=0
23LV_USE_SDL=1
24
25Upstream-Status: Submitted [https://github.com/lvgl/lv_port_linux_frame_buffer/pull/47]
26Signed-off-by: Marek Vasut <marex@denx.de>
27---
28 CMakeLists.txt | 6 +++++-
29 main.c         | 8 ++++++++
30 2 files changed, 13 insertions(+), 1 deletion(-)
31
32diff --git a/CMakeLists.txt b/CMakeLists.txt
33index c1cfb7f..658193f 100644
34--- a/CMakeLists.txt
35+++ b/CMakeLists.txt
36@@ -15,6 +15,10 @@ add_executable(main main.c mouse_cursor_icon.c)
37 include(${CMAKE_CURRENT_LIST_DIR}/lvgl/tests/FindLibDRM.cmake)
38 include_directories(${Libdrm_INCLUDE_DIRS})
39
40-target_link_libraries(main lvgl lvgl::examples lvgl::demos lvgl::thorvg ${SDL2_LIBRARIES} ${Libdrm_LIBRARIES} m pthread)
41+find_package(SDL2)
42+find_package(SDL2_image)
43+include_directories(${SDL2_INCLUDE_DIRS} ${SDL2_IMAGE_INCLUDE_DIRS})
44+
45+target_link_libraries(main lvgl lvgl::examples lvgl::demos lvgl::thorvg ${SDL2_LIBRARIES} ${SDL2_IMAGE_LIBRARIES} ${Libdrm_LIBRARIES} m pthread)
46 add_custom_target (run COMMAND ${EXECUTABLE_OUTPUT_PATH}/main DEPENDS main)
47
48diff --git a/main.c b/main.c
49index ab4e936..4b66ebc 100644
50--- a/main.c
51+++ b/main.c
52@@ -25,6 +25,14 @@ static void lv_linux_disp_init(void)
53
54     lv_linux_drm_set_file(disp, videocard, -1);
55 }
56+#elif LV_USE_SDL
57+static void lv_linux_disp_init(void)
58+{
59+    const int width = atoi(getenv("LV_VIDEO_WIDTH") ? : "800");
60+    const int height = atoi(getenv("LV_VIDEO_HEIGHT") ? : "480");
61+
62+    lv_sdl_window_create(width, height);
63+}
64 #else
65 #error Unsupported configuration
66 #endif
67--
682.43.0
69
70