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Diffstat (limited to 'src/gallium/drivers/i915simple/i915_screen.c')
-rw-r--r--src/gallium/drivers/i915simple/i915_screen.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/gallium/drivers/i915simple/i915_screen.c b/src/gallium/drivers/i915simple/i915_screen.c
index 631642e1b6b..dcd349e478b 100644
--- a/src/gallium/drivers/i915simple/i915_screen.c
+++ b/src/gallium/drivers/i915simple/i915_screen.c
@@ -200,6 +200,35 @@ i915_destroy_screen( struct pipe_screen *screen )
}
+static void *
+i915_surface_map( struct pipe_screen *screen,
+ struct pipe_surface *surface,
+ unsigned flags )
+{
+ char *map = screen->winsys->buffer_map( screen->winsys, surface->buffer, flags );
+ if (map == NULL)
+ return NULL;
+
+ if (surface->texture &&
+ (flags & PIPE_BUFFER_USAGE_CPU_WRITE))
+ {
+ /* Do something to notify contexts of a texture change.
+ */
+ /* i915_screen(screen)->timestamp++; */
+ }
+
+ return map + surface->offset;
+}
+
+static void
+i915_surface_unmap(struct pipe_screen *screen,
+ struct pipe_surface *surface)
+{
+ screen->winsys->buffer_unmap( screen->winsys, surface->buffer );
+}
+
+
+
/**
* Create a new i915_screen object
*/
@@ -243,6 +272,8 @@ i915_create_screen(struct pipe_winsys *winsys, uint pci_id)
i915screen->screen.get_param = i915_get_param;
i915screen->screen.get_paramf = i915_get_paramf;
i915screen->screen.is_format_supported = i915_is_format_supported;
+ i915screen->screen.surface_map = i915_surface_map;
+ i915screen->screen.surface_unmap = i915_surface_unmap;
i915_init_screen_texture_functions(&i915screen->screen);