1 files changed, 71 insertions, 0 deletions

diff --git a/libraries/evas/src/modules/engines/software_16_ddraw/evas_ddraw_main.cpp b/libraries/evas/src/modules/engines/software_16_ddraw/evas_ddraw_main.cpp
new file mode 100644
index 0000000..7a2eb7f
--- /dev/null
+++ b/libraries/evas/src/modules/engines/software_16_ddraw/evas_ddraw_main.cpp
@@ -0,0 +1,71 @@
+#include "evas_engine.h"
+
+
+void *
+evas_software_ddraw_lock(DDraw_Output_Buffer *ddob, int *ddraw_width, int *ddraw_height, int *ddraw_pitch, int *ddraw_depth)
+{
+   DDSURFACEDESC surface_desc;
+
+   ZeroMemory(&surface_desc, sizeof(surface_desc));
+   surface_desc.dwSize = sizeof(surface_desc);
+
+   if (FAILED(ddob->dd.surface_back->Lock(NULL,
+                                          &surface_desc,
+                                          DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR | DDLOCK_WRITEONLY,
+                                          NULL)))
+     return NULL;
+
+   *ddraw_width = surface_desc.dwWidth;
+   *ddraw_height = surface_desc.dwHeight;
+   *ddraw_pitch = surface_desc.lPitch;
+   *ddraw_depth = surface_desc.ddpfPixelFormat.dwRGBBitCount >> 3;
+
+   return surface_desc.lpSurface;
+}
+
+void
+evas_software_ddraw_unlock_and_flip(DDraw_Output_Buffer *ddob)
+{
+   RECT    dst_rect;
+   RECT    src_rect;
+   POINT   p;
+
+   if (FAILED(ddob->dd.surface_back->Unlock(NULL)))
+     return;
+
+   /* we figure out where on the primary surface our window lives */
+   p.x = 0;
+   p.y = 0;
+   ClientToScreen(ddob->dd.window, &p);
+   GetClientRect(ddob->dd.window, &dst_rect);
+   OffsetRect(&dst_rect, p.x, p.y);
+   SetRect(&src_rect, 0, 0, ddob->width, ddob->height);
+
+   /* nothing to do if the function fails, so we don't check the result */
+   ddob->dd.surface_primary->BltFast(0, 0,
+                                     ddob->dd.surface_back, &dst_rect,
+                                     DDBLTFAST_WAIT || DDBLTFAST_NOCOLORKEY);
+}
+
+void
+evas_software_ddraw_surface_resize(DDraw_Output_Buffer *ddob)
+{
+   DDSURFACEDESC surface_desc;
+
+   ddob->dd.surface_back->Release();
+   memset (&surface_desc, 0, sizeof (surface_desc));
+   surface_desc.dwSize = sizeof (surface_desc);
+   /* FIXME: that code does not compile. Must know why */
+#if 0
+   surface_desc.dwFlags = DDSD_HEIGHT | DDSD_WIDTH;
+   surface_desc.dwWidth = width;
+   surface_desc.dwHeight = height;
+   IDirectDrawSurface7_SetSurfaceDesc(ddob->dd.surface_back, &surface_desc, NULL);
+#else
+   surface_desc.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
+   surface_desc.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;
+   surface_desc.dwWidth = ddob->width;
+   surface_desc.dwHeight = ddob->height;
+   ddob->dd.object->CreateSurface(&surface_desc, &ddob->dd.surface_back, NULL);
+#endif
+}