[PATCH 2/2] winewayland: Implement window surface shape and color keying.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winewayland.drv/window_surface.c | 30 +++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/dlls/winewayland.drv/window_surface.c b/dlls/winewayland.drv/window_surface.c
index 33cffad67af..f3bda116e6d 100644
--- a/dlls/winewayland.drv/window_surface.c
+++ b/dlls/winewayland.drv/window_surface.c
@@ -336,6 +336,34 @@ static void wayland_shm_buffer_copy(struct wayland_shm_buffer *src,
                       src->format == WL_SHM_FORMAT_XRGB8888 && dst->format == WL_SHM_FORMAT_ARGB8888);
 }

+/**********************************************************************
+ *          wayland_shm_buffer_copy_shape
+ */
+static void wayland_shm_buffer_copy_shape(struct wayland_shm_buffer *buffer, const RECT *dirty,
+                                          const BITMAPINFO *shape_info, const void *shape_bits)
+{
+    RECT dst_rect = {0, 0, buffer->width, buffer->height};
+    UINT32 *color, shape_stride, color_stride, x, y;
+    const BYTE *shape;
+    RECT rect;
+
+    shape_stride = shape_info->bmiHeader.biSizeImage / abs(shape_info->bmiHeader.biHeight);
+    color_stride = dst_rect.right - dst_rect.left;
+
+    if (!intersect_rect(&rect, &dst_rect, dirty)) return;
+
+    color = (UINT32 *)buffer->map_data + rect.top * color_stride;
+    shape = (const BYTE *)shape_bits + rect.top * shape_stride;
+
+    for (y = rect.top; y < rect.bottom; y++, color += color_stride, shape += shape_stride)
+    {
+        for (x = rect.left; x < rect.right; x++)
+        {
+            if (!(shape[x / 8] & (1 << (7 - (x & 7))))) color[x] = 0;
+        }
+    }
+}
+
 /***********************************************************************
  *           wayland_window_surface_flush
  */
@@ -412,6 +440,8 @@ static BOOL wayland_window_surface_flush(struct window_surface *window_surface,

wayland_shm_buffer_copy_data(shm_buffer, color_bits, &surface_rect, copy_from_window_region,
                                  !!shape_bits);
+    if (shape_bits) wayland_shm_buffer_copy_shape(shm_buffer, rect, shape_info, shape_bits);
+
     NtGdiSetRectRgn(shm_buffer->damage_region, 0, 0, 0, 0);

flushed = set_window_surface_contents(window_surface->hwnd, shm_buffer, surface_damage_region);