mesa: move the format and type check before select_tex_image()

Move the format and type check before select_tex_image, or it will fail to
report the mismatch error if the teximage is null.

Reported-by: Anuj Phogat <anuj.phogat@gmail.com>
Signed-off-by: Jian Zhao <jian.j.zhao@intel.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: Brian Paul <brianp@vmware.com>

diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index 3f24187..6ead871 100644 (file)
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -702,12 +702,6 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
       return GL_TRUE;
    }
 
-   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
-   if (!texImage) {
-      /* out of memory */
-      return GL_TRUE;
-   }
-
    if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
       /*GL_INVALID_OPERATION is generated by a format/type
        * mismatch (see the 1.2 spec page 94, sec 3.6.4.)
@@ -716,6 +710,12 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
       return GL_TRUE;
    }
 
+   texImage = _mesa_select_tex_image(ctx, texObj, target, level);
+   if (!texImage) {
+      /* out of memory */
+      return GL_TRUE;
+   }
+
    baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
       
    /* Make sure the requested image format is compatible with the