[PATCH v6 1/1] wined3d: Swap wined3d_resource.heap_pointer on swapchain present.

[Panayiotis Talianos]

From: Panayiotis Talianos

wined3d_resource_free_sysmem() uses wined3d_resource.heap_pointer to
deallocate wined3d_resource.heap_memory. Preserve pairing of
heap_pointer/heap_memory to prevent deallocation of incorrect
heap_memory.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=57387

Signed-off-by: Panayiotis Talianos 
---
 dlls/wined3d/swapchain.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/dlls/wined3d/swapchain.c b/dlls/wined3d/swapchain.c
index 2811e588ecd..507d6e64bd8 100644
--- a/dlls/wined3d/swapchain.c
+++ b/dlls/wined3d/swapchain.c
@@ -1319,7 +1319,8 @@ static void swapchain_gdi_present(struct wined3d_swapchain *swapchain,
 {
     struct wined3d_dc_info *front, *back;
     HBITMAP bitmap;
-    void *data;
+    void *heap_pointer;
+    void *heap_memory;
     HDC dc;

front = &swapchain->front_buffer->dc_info[0];
@@ -1328,15 +1329,18 @@ static void swapchain_gdi_present(struct wined3d_swapchain *swapchain,
     /* Flip the surface data. */
     dc = front->dc;
     bitmap = front->bitmap;
-    data = swapchain->front_buffer->resource.heap_memory;
+    heap_pointer = swapchain->front_buffer->resource.heap_pointer;
+    heap_memory = swapchain->front_buffer->resource.heap_memory;

front->dc = back->dc;
     front->bitmap = back->bitmap;
+    swapchain->front_buffer->resource.heap_pointer = swapchain->back_buffers[0]->resource.heap_pointer;
     swapchain->front_buffer->resource.heap_memory = swapchain->back_buffers[0]->resource.heap_memory;

back->dc = dc;
     back->bitmap = bitmap;
-    swapchain->back_buffers[0]->resource.heap_memory = data;
+    swapchain->back_buffers[0]->resource.heap_pointer = heap_pointer;
+    swapchain->back_buffers[0]->resource.heap_memory = heap_memory;

SetRect(&swapchain->front_buffer_update, 0, 0,
             swapchain->front_buffer->resource.width,