st/mesa: add some debugging code in st_ChooseTextureFormat()

I've temporarily added code like this many times.  Wrap it in a
conditional that can be enabled when needed.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index e3fb761aa98d5c57402624f9548c56e942db88f4..0c9442862d47b7691552a1f6a2dbef34a89198f9 100644 (file)
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -34,6 +34,8 @@
 
 #include "main/imports.h"
 #include "main/context.h"
+#include "main/enums.h"
+#include "main/formats.h"
 #include "main/glformats.h"
 #include "main/texgetimage.h"
 #include "main/teximage.h"
@@ -1938,6 +1940,7 @@ st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
 {
    struct st_context *st = st_context(ctx);
    enum pipe_format pFormat;
+   mesa_format mFormat;
    unsigned bindings;
    enum pipe_texture_target pTarget = gl_target_to_pipe(target);
 
@@ -2010,7 +2013,20 @@ st_ChooseTextureFormat(struct gl_context *ctx, GLenum target,
       return MESA_FORMAT_NONE;
    }
 
-   return st_pipe_format_to_mesa_format(pFormat);
+   mFormat = st_pipe_format_to_mesa_format(pFormat);
+
+   /* Debugging aid */
+   if (0) {
+      debug_printf("%s(intFormat=%s, format=%s, type=%s) -> %s, %s\n",
+                   __func__,
+                   _mesa_enum_to_string(internalFormat),
+                   _mesa_enum_to_string(format),
+                   _mesa_enum_to_string(type),
+                   util_format_name(pFormat),
+                   _mesa_get_format_name(mFormat));
+   }
+
+   return mFormat;
 }