svga: implement sRGB rendering for imported surfaces

If texture is imported and templ format is sRGB, use compatible sRGB format
to the imported texture format while creating surface view.

tested with MTT piglit, glretrace, viewperf and conform

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Charmaine Lee <charmainel@vmware.com>

diff --git a/src/gallium/drivers/svga/svga_surface.c b/src/gallium/drivers/svga/svga_surface.c
index fdc6ba4e4daa478c69e948d6c4c5e33f93e84b7e..04173266ff0c279aea53844b43a64e853438237b 100644 (file)
--- a/src/gallium/drivers/svga/svga_surface.c
+++ b/src/gallium/drivers/svga/svga_surface.c
@@ -305,10 +305,17 @@ svga_create_surface_view(struct pipe_context *pipe,
       bind = PIPE_BIND_RENDER_TARGET;
    }
 
-   if (tex->imported)
+   if (tex->imported) {
+      /* imported resource (a window) */
       format = tex->key.format;
-   else
+      if (util_format_is_srgb(surf_tmpl->format)) {
+         /* sRGB rendering to window */
+         format = svga_linear_to_srgb(format);
+      }
+   }
+   else {
       format = svga_translate_format(ss, surf_tmpl->format, bind);
+   }
 
    assert(format != SVGA3D_FORMAT_INVALID);