wined3d: Avoid stalling the pipeline on 3D blits.

dlls/wined3d/cs.c

@@ -2550,6 +2550,7 @@ static void wined3d_cs_exec_blt_sub_resource(struct wined3d_cs *cs, const void *
         unsigned int row_pitch, slice_pitch;
         struct wined3d_context *context;
         struct wined3d_bo_address addr;
+        unsigned int location;
 
         if (op->flags & ~WINED3D_BLT_RAW)
         {
@@ -2582,11 +2583,16 @@ static void wined3d_cs_exec_blt_sub_resource(struct wined3d_cs *cs, const void *
 
         context = context_acquire(cs->c.device, NULL, 0);
 
+        location = src_texture->resource.map_binding;
+        if (location == WINED3D_LOCATION_SYSMEM
+                && wined3d_texture_can_use_pbo(src_texture, &context->device->adapter->d3d_info))
+            location = WINED3D_LOCATION_BUFFER;
+
         if (!wined3d_texture_load_location(src_texture, op->src_sub_resource_idx,
-                context, src_texture->resource.map_binding))
+                context, location))
         {
             ERR("Failed to load source sub-resource into %s.\n",
-                    wined3d_debug_location(src_texture->resource.map_binding));
+                    wined3d_debug_location(location));
             context_release(context);
             goto error;
         }
@@ -2607,7 +2613,7 @@ static void wined3d_cs_exec_blt_sub_resource(struct wined3d_cs *cs, const void *
             goto error;
         }
 
-        wined3d_texture_get_memory(src_texture, op->src_sub_resource_idx, &addr, src_texture->resource.map_binding);
+        wined3d_texture_get_memory(src_texture, op->src_sub_resource_idx, &addr, location);
         wined3d_texture_get_pitch(src_texture, op->src_sub_resource_idx % src_texture->level_count,
                 &row_pitch, &slice_pitch);
 

dlls/wined3d/texture.c

@@ -47,12 +47,20 @@ struct wined3d_rect_f
     float b;
 };
 
-static BOOL wined3d_texture_use_pbo(const struct wined3d_texture *texture, const struct wined3d_d3d_info *d3d_info)
+BOOL wined3d_texture_can_use_pbo(const struct wined3d_texture *texture, const struct wined3d_d3d_info *d3d_info)
 {
     if (!d3d_info->pbo || texture->resource.format->conv_byte_count
             || (texture->flags & (WINED3D_TEXTURE_PIN_SYSMEM | WINED3D_TEXTURE_COND_NP2_EMULATED)))
         return FALSE;
 
+    return TRUE;
+}
+
+static BOOL wined3d_texture_use_pbo(const struct wined3d_texture *texture, const struct wined3d_d3d_info *d3d_info)
+{
+    if (!wined3d_texture_can_use_pbo(texture, d3d_info))
+        return FALSE;
+
     /* Use a PBO for dynamic textures and read-only staging textures. */
     return (!(texture->resource.access & WINED3D_RESOURCE_ACCESS_CPU)
                 && texture->resource.usage & WINED3DUSAGE_DYNAMIC)

dlls/wined3d/wined3d_private.h

@@ -4402,6 +4402,8 @@ BOOL wined3d_texture_prepare_location(struct wined3d_texture *texture, unsigned
         struct wined3d_context *context, DWORD location) DECLSPEC_HIDDEN;
 void wined3d_texture_set_swapchain(struct wined3d_texture *texture,
         struct wined3d_swapchain *swapchain) DECLSPEC_HIDDEN;
+BOOL wined3d_texture_can_use_pbo(const struct wined3d_texture *texture, const struct wined3d_d3d_info *d3d_info)
+        DECLSPEC_HIDDEN;
 void wined3d_texture_sub_resources_destroyed(struct wined3d_texture *texture) DECLSPEC_HIDDEN;
 void wined3d_texture_translate_drawable_coords(const struct wined3d_texture *texture,
         HWND window, RECT *rect) DECLSPEC_HIDDEN;