mesa/main: export _is_multisample_target for external usage

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14362>

src/mesa/main/formatquery.c

@@ -863,8 +863,8 @@ _get_min_dimensions(GLenum pname)
  * Similar to teximage.c:check_multisample_target, but independent of the
  * dimensions.
  */
-static bool
-_is_multisample_target(GLenum target)
+bool
+_mesa_is_multisample_target(GLenum target)
 {
    switch(target) {
    case GL_TEXTURE_2D_MULTISAMPLE:
@@ -1104,7 +1104,7 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
        * returned as MAX_HEIGHT or MAX_DEPTH */
       for (i = 0; i < 4; i++) {
          if (max_dimensions_pnames[i] == GL_SAMPLES &&
-             !_is_multisample_target(target))
+             !_mesa_is_multisample_target(target))
             continue;
 
          _mesa_GetInternalformativ(target, internalformat,

src/mesa/main/formatquery.h

@@ -35,4 +35,7 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
                                     GLenum internalFormat, GLenum pname,
                                     GLint *params);
 
+bool
+_mesa_is_multisample_target(GLenum target);
+
 #endif /* FORMATQUERY_H */