gallium: add flags parameter to pipe_screen::context_create

This allows creating compute-only and debug contexts.

Reviewed-by: Brian Paul <[email protected]>
Acked-by: Christian König <[email protected]>
Acked-by: Alex Deucher <[email protected]>

2 files changed, 24 insertions, 2 deletions

diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 4f2aa14e129..88e37e9f056 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -334,6 +334,21 @@ enum pipe_flush_flags
 #define PIPE_DEBUG_DEVICE_IS_HUNG      (1 << 0)
 
 /**
+ * Create a compute-only context. Use in pipe_screen::context_create.
+ * This disables draw, blit, and clear*, render_condition, and other graphics
+ * functions. Interop with other graphics contexts is still allowed.
+ * This allows scheduling jobs on a compute-only hardware command queue that
+ * can run in parallel with graphics without stalling it.
+ */
+#define PIPE_CONTEXT_COMPUTE_ONLY      (1 << 0)
+
+/**
+ * Gather debug information and expect that pipe_context::dump_debug_state
+ * will be called. Use in pipe_screen::context_create.
+ */
+#define PIPE_CONTEXT_DEBUG             (1 << 1)
+
+/**
  * Flags for pipe_context::memory_barrier.
  */
 #define PIPE_BARRIER_MAPPED_BUFFER     (1 << 0)
diff --git a/src/gallium/include/pipe/p_screen.h b/src/gallium/include/pipe/p_screen.h
index 0d2658313e5..a7b7b72ac89 100644
--- a/src/gallium/include/pipe/p_screen.h
+++ b/src/gallium/include/pipe/p_screen.h
@@ -125,8 +125,15 @@ struct pipe_screen {
     */
    uint64_t (*get_timestamp)(struct pipe_screen *);
 
-   struct pipe_context * (*context_create)( struct pipe_screen *,
-					    void *priv );
+   /**
+    * Create a context.
+    *
+    * \param screen      pipe screen
+    * \param priv        a pointer to set in pipe_context::priv
+    * \param flags       a mask of PIPE_CONTEXT_* flags
+    */
+   struct pipe_context * (*context_create)(struct pipe_screen *screen,
+					   void *priv, unsigned flags);
 
    /**
     * Check if the given pipe_format is supported as a texture or