i915g: Add a software only debuging winsys

1 files changed, 58 insertions, 0 deletions

diff --git a/src/gallium/winsys/i915/sw/i915_sw_fence.c b/src/gallium/winsys/i915/sw/i915_sw_fence.c
new file mode 100644
index 00000000000..4b61b2a5e30
--- /dev/null
+++ b/src/gallium/winsys/i915/sw/i915_sw_fence.c
@@ -0,0 +1,58 @@
+
+#include "i915_sw_winsys.h"
+#include "util/u_memory.h"
+#include "util/u_atomic.h"
+#include "util/u_inlines.h"
+
+struct i915_sw_fence
+{
+   struct pipe_reference reference;
+};
+
+struct pipe_fence_handle *
+i915_sw_fence_create()
+{
+   struct i915_sw_fence *fence = CALLOC_STRUCT(i915_sw_fence);
+
+   pipe_reference_init(&fence->reference, 1);
+
+   return (struct pipe_fence_handle *)fence;
+}
+
+static void
+i915_sw_fence_reference(struct i915_winsys *iws,
+                        struct pipe_fence_handle **ptr,
+                        struct pipe_fence_handle *fence)
+{
+   struct i915_sw_fence *old = (struct i915_sw_fence *)*ptr;
+   struct i915_sw_fence *f = (struct i915_sw_fence *)fence;
+
+   if (pipe_reference(&((struct i915_sw_fence *)(*ptr))->reference, &f->reference)) {
+      FREE(old);
+   }
+   *ptr = fence;
+}
+
+static int
+i915_sw_fence_signalled(struct i915_winsys *iws,
+                        struct pipe_fence_handle *fence)
+{
+   assert(0);
+
+   return 0;
+}
+
+static int
+i915_sw_fence_finish(struct i915_winsys *iws,
+                     struct pipe_fence_handle *fence)
+{
+   return 0;
+}
+
+void
+i915_sw_winsys_init_fence_functions(struct i915_sw_winsys *isws)
+{
+   isws->base.fence_reference = i915_sw_fence_reference;
+   isws->base.fence_signalled = i915_sw_fence_signalled;
+   isws->base.fence_finish = i915_sw_fence_finish;
+}