st/xa: Add a function to check for supported formats

Typically this was done by having a surface creation function fail if
the format was not supported.
However, in some situations when changing hardware surface formats,
it's desirable to do this check before attempting costly readback operations.

Also updated the surface_redefine interface.

Bump minor.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>

4 files changed, 35 insertions, 8 deletions

diff --git a/src/gallium/state_trackers/xa/Makefile b/src/gallium/state_trackers/xa/Makefile
index 92edfd0..a31db6e 100644
--- a/src/gallium/state_trackers/xa/Makefile
+++ b/src/gallium/state_trackers/xa/Makefile
@@ -4,7 +4,7 @@ include $(TOP)/configs/current
 ##### MACROS #####
 
 XA_MAJOR = 0
-XA_MINOR = 3
+XA_MINOR = 4
 XA_TINY = 0
 XA_CFLAGS = -g -fPIC -Wall
 
diff --git a/src/gallium/state_trackers/xa/xa_symbols b/src/gallium/state_trackers/xa/xa_symbols
index f1eabea..6da701f 100644
--- a/src/gallium/state_trackers/xa/xa_symbols
+++ b/src/gallium/state_trackers/xa/xa_symbols
@@ -9,6 +9,7 @@ xa_surface_map
 xa_surface_unmap
 xa_surface_format
 xa_surface_handle
+xa_format_check_supported
 xa_context_default
 xa_context_create
 xa_context_destroy
diff --git a/src/gallium/state_trackers/xa/xa_tracker.c b/src/gallium/state_trackers/xa/xa_tracker.c
index 8d58e5a..50922d3 100644
--- a/src/gallium/state_trackers/xa/xa_tracker.c
+++ b/src/gallium/state_trackers/xa/xa_tracker.c
@@ -248,6 +248,29 @@ xa_get_format_stype_depth(struct xa_tracker *xa,
     return fdesc;
 }
 
+int
+xa_format_check_supported(struct xa_tracker *xa,
+			  enum xa_formats xa_format, unsigned int flags)
+{
+    struct xa_format_descriptor fdesc = xa_get_pipe_format(xa_format);
+    unsigned int bind;
+
+    if (fdesc.xa_format == xa_format_unknown)
+	return -XA_ERR_INVAL;
+
+    bind = stype_bind[xa_format_type(fdesc.xa_format)];
+    if (flags & XA_FLAG_SHARED)
+	bind |= PIPE_BIND_SHARED;
+    if (flags & XA_FLAG_RENDER_TARGET)
+	bind |= PIPE_BIND_RENDER_TARGET;
+
+    if (!xa->screen->is_format_supported(xa->screen, fdesc.format,
+					 PIPE_TEXTURE_2D, 0, bind))
+	return -XA_ERR_INVAL;
+
+    return XA_ERR_NONE;
+}
+
 struct xa_surface *
 xa_surface_create(struct xa_tracker *xa,
 		  int width,
@@ -309,8 +332,8 @@ xa_surface_redefine(struct xa_surface *srf,
 		    int depth,
 		    enum xa_surface_type stype,
 		    enum xa_formats xa_format,
-		    unsigned int add_flags,
-		    unsigned int remove_flags, int copy_contents)
+		    unsigned int new_flags,
+		    int copy_contents)
 {
     struct pipe_resource *template = &srf->template;
     struct pipe_resource *texture;
@@ -318,7 +341,6 @@ xa_surface_redefine(struct xa_surface *srf,
     struct xa_tracker *xa = srf->xa;
     int save_width;
     int save_height;
-    unsigned int new_flags = (srf->flags | add_flags) & ~(remove_flags);
     struct xa_format_descriptor fdesc;
 
     if (xa_format == xa_format_unknown)
@@ -422,5 +444,5 @@ xa_surface_handle(struct xa_surface *srf,
 enum xa_formats
 xa_surface_format(const struct xa_surface *srf)
 {
-    return srf->fdesc.format;
+    return srf->fdesc.xa_format;
 }
diff --git a/src/gallium/state_trackers/xa/xa_tracker.h b/src/gallium/state_trackers/xa/xa_tracker.h
index 8c9dd5e..62f8a21 100644
--- a/src/gallium/state_trackers/xa/xa_tracker.h
+++ b/src/gallium/state_trackers/xa/xa_tracker.h
@@ -37,7 +37,7 @@
 #include <stdint.h>
 
 #define XA_TRACKER_VERSION_MAJOR 0
-#define XA_TRACKER_VERSION_MINOR 3
+#define XA_TRACKER_VERSION_MINOR 4
 #define XA_TRACKER_VERSION_PATCH 0
 
 #define XA_FLAG_SHARED         (1 << 0)
@@ -147,6 +147,10 @@ extern struct xa_tracker *xa_tracker_create(int drm_fd);
 
 extern void xa_tracker_destroy(struct xa_tracker *xa);
 
+extern int xa_format_check_supported(struct xa_tracker *xa,
+				     enum xa_formats xa_format,
+				     unsigned int flags);
+
 extern struct xa_surface *xa_surface_create(struct xa_tracker *xa,
 					    int width,
 					    int height,
@@ -165,8 +169,8 @@ extern int xa_surface_redefine(struct xa_surface *srf,
 			       int depth,
 			       enum xa_surface_type stype,
 			       enum xa_formats rgb_format,
-			       unsigned int add_flags,
-			       unsigned int remove_flags, int copy_contents);
+			       unsigned int new_flags,
+			       int copy_contents);
 
 extern int xa_surface_handle(struct xa_surface *srf,
 			     uint32_t * handle, unsigned int *byte_stride);