3 files changed, 28 insertions, 0 deletions
diff --git a/src/gallium/drivers/swr/swr_draw.cpp b/src/gallium/drivers/swr/swr_draw.cpp
index 4e6426d7ec0..f85076b74cc 100644
--- a/src/gallium/drivers/swr/swr_draw.cpp
+++ b/src/gallium/drivers/swr/swr_draw.cpp
@@ -219,6 +219,25 @@ swr_finish(struct pipe_context *pipe)
    swr_fence_reference(pipe->screen, &fence, NULL);
 }
 
+/*
+ * Invalidate tiles so they can be reloaded back when needed
+ */
+void
+swr_invalidate_render_target(struct pipe_context *pipe,
+                             uint32_t attachment,
+                             uint16_t width, uint16_t height)
+{
+   struct swr_context *ctx = swr_context(pipe);
+
+   /* grab the rect from the passed in arguments */
+   swr_update_draw_context(ctx);
+   SWR_RECT full_rect =
+      {0, 0, (int32_t)width, (int32_t)height};
+   SwrInvalidateTiles(ctx->swrContext,
+                      1 << attachment,
+                      full_rect);
+}
+
 
 /*
  * Store SWR HotTiles back to renderTarget surface.
diff --git a/src/gallium/drivers/swr/swr_resource.h b/src/gallium/drivers/swr/swr_resource.h
index ae9954c1e7d..4effd4604f4 100644
--- a/src/gallium/drivers/swr/swr_resource.h
+++ b/src/gallium/drivers/swr/swr_resource.h
@@ -96,6 +96,10 @@ swr_resource_data(struct pipe_resource *resource)
 }
 
 
+void swr_invalidate_render_target(struct pipe_context *pipe,
+                                  uint32_t attachment,
+                                  uint16_t width, uint16_t height);
+
 void swr_store_render_target(struct pipe_context *pipe,
                              uint32_t attachment,
                              enum SWR_TILE_STATE post_tile_state);
diff --git a/src/gallium/drivers/swr/swr_state.cpp b/src/gallium/drivers/swr/swr_state.cpp
index 12da99fc480..f65e6427534 100644
--- a/src/gallium/drivers/swr/swr_state.cpp
+++ b/src/gallium/drivers/swr/swr_state.cpp
@@ -935,6 +935,11 @@ swr_change_rt(struct swr_context *ctx,
        * INVALID so they are reloaded from surface. */
       swr_store_render_target(&ctx->pipe, attachment, SWR_TILE_INVALID);
       need_fence = true;
+   } else {
+      /* if no previous attachment, invalidate tiles that may be marked
+       * RESOLVED because of an old attachment */
+      swr_invalidate_render_target(&ctx->pipe, attachment, sf->width, sf->height);
+      /* no need to set fence here */
    }
 
    /* Make new attachment */