u.diff

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56dbd2e..b3b510c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,6 +40,7 @@ if (BUILD_PLUGIN)
     add_library(linux-vkcapture MODULE ${PLUGIN_SOURCES})
     target_link_libraries(linux-vkcapture libobs obs-frontend-api ${X11_xcb_LIB} ${X11_xcb_xfixes_LIB})
     set_target_properties(linux-vkcapture PROPERTIES PREFIX "")
+    set_target_properties(linux-vkcapture PROPERTIES C_STANDARD 11)
     target_include_directories(linux-vkcapture PRIVATE $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
 
     if (COMMAND install_obs_plugin_with_data)
diff --git a/src/capture.c b/src/capture.c
index 674d161..837279a 100644
--- a/src/capture.c
+++ b/src/capture.c
@@ -111,7 +111,7 @@ void capture_init_shtex(
 
     struct iovec io = {
         .iov_base = &td,
-        .iov_len = sizeof(struct capture_texture_data),
+        .iov_len = CAPTURE_TEXTURE_DATA_SIZE,
     };
     msg.msg_iov = &io;
     msg.msg_iovlen = 1;
diff --git a/src/capture.h b/src/capture.h
index d2da060..67b2ce9 100644
--- a/src/capture.h
+++ b/src/capture.h
@@ -20,6 +20,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <assert.h>
 
 #ifndef DRM_FORMAT_XRGB8888
 #define fourcc_code(a, b, c, d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
@@ -30,15 +31,19 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #endif
 
 struct capture_texture_data {
-    int width;
-    int height;
-    int format;
-    int stride;
-    int offset;
+    int32_t width;
+    int32_t height;
+    int32_t format;
+    int32_t stride;
+    int32_t offset;
     uint64_t modifier;
     uint32_t winid;
-    bool flip;
-};
+    uint8_t flip;
+    uint8_t padding[256];
+} __attribute__((packed));
+
+#define CAPTURE_TEXTURE_DATA_SIZE 289
+static_assert(sizeof(struct capture_texture_data) == CAPTURE_TEXTURE_DATA_SIZE, "size mismatch");
 
 void capture_init();
 void capture_update_socket();
diff --git a/src/vkcapture.c b/src/vkcapture.c
index b864453..8655dcc 100644
--- a/src/vkcapture.c
+++ b/src/vkcapture.c
@@ -67,7 +67,7 @@ static void vkcapture_cleanup_client(vkcapture_source_t *ctx)
         ctx->buf_fd = -1;
     }
 
-    memset(&ctx->data, 0, sizeof(struct capture_texture_data));
+    memset(&ctx->data, 0, CAPTURE_TEXTURE_DATA_SIZE);
 
 #if HAVE_X11_XCB
     ctx->root_winid = 0;
@@ -207,7 +207,7 @@ static void vkcapture_source_video_tick(void *data, float seconds)
         struct msghdr msg = {0};
         struct iovec io = {
             .iov_base = &ctx->data,
-            .iov_len = sizeof(struct capture_texture_data),
+            .iov_len = CAPTURE_TEXTURE_DATA_SIZE,
         };
         msg.msg_iov = &io;
         msg.msg_iovlen = 1;
@@ -238,7 +238,7 @@ static void vkcapture_source_video_tick(void *data, float seconds)
 
             int buf_fd = *((int *)CMSG_DATA(cmsgh));
 
-            if (io.iov_len != sizeof(struct capture_texture_data)) {
+            if (io.iov_len != CAPTURE_TEXTURE_DATA_SIZE) {
                 close(buf_fd);
                 return;
             }
@@ -260,9 +260,10 @@ static void vkcapture_source_video_tick(void *data, float seconds)
             obs_enter_graphics();
             const uint32_t stride = ctx->data.stride;
             const uint32_t offset = ctx->data.offset;
+            const uint64_t modifier = ctx->data.modifier;
             ctx->texture = gs_texture_create_from_dmabuf(ctx->data.width, ctx->data.height,
                     ctx->data.format, GS_BGRX, 1, &ctx->buf_fd, &stride, &offset,
-                    ctx->data.modifier != DRM_FORMAT_MOD_INVALID ? &ctx->data.modifier : NULL);
+                    modifier != DRM_FORMAT_MOD_INVALID ? &modifier : NULL);
             obs_leave_graphics();
 
             if (!ctx->texture) {