vl/buffers: add RGBX and BGRX to the supported formats

Useful is one wants to create RGBX or BGRX surfaces.
The infrastructure is such that it required just a
few definitions to support these formats.

Signed-off-by: Julien Isorce <j.isorce@samsung.com>
Reviewed-by: Christian K<C3><B6>nig <christian.koenig@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>

src/gallium/auxiliary/vl/vl_video_buffer.c

@@ -62,6 +62,18 @@ const enum pipe_format const_resource_formats_VUYA[3] = {
    PIPE_FORMAT_NONE
 };
 
+const enum pipe_format const_resource_formats_YUVX[3] = {
+   PIPE_FORMAT_R8G8B8X8_UNORM,
+   PIPE_FORMAT_NONE,
+   PIPE_FORMAT_NONE
+};
+
+const enum pipe_format const_resource_formats_VUYX[3] = {
+   PIPE_FORMAT_B8G8R8X8_UNORM,
+   PIPE_FORMAT_NONE,
+   PIPE_FORMAT_NONE
+};
+
 const enum pipe_format const_resource_formats_YUYV[3] = {
    PIPE_FORMAT_R8G8_R8B8_UNORM,
    PIPE_FORMAT_NONE,
@@ -102,6 +114,12 @@ vl_video_buffer_formats(struct pipe_screen *screen, enum pipe_format format)
    case PIPE_FORMAT_B8G8R8A8_UNORM:
       return const_resource_formats_VUYA;
 
+   case PIPE_FORMAT_R8G8B8X8_UNORM:
+      return const_resource_formats_VUYX;
+
+   case PIPE_FORMAT_B8G8R8X8_UNORM:
+      return const_resource_formats_VUYX;
+
    case PIPE_FORMAT_YUYV:
       return const_resource_formats_YUYV;