mesa: Fix incorrect assertion in init_teximage_fields_ms

_BaseFormat is a GLenum (unsigned int) so testing if its value is
greater than 0 to detect the cases where _mesa_base_tex_format
returns -1 doesn't work.

Fixing the assertion breaks the arb_texture_view-lifetime-format
piglit test on nouveau, since that test calls
_mesa_base_tex_format with GL_R16F with a context that does not
have ARB_texture_float, so it returns -1 for the BaseFormat, which
was not being caught properly by the ASSERT in init_teximage_fields_ms
until now.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index aad60f3f7397ab92b0448cb9c1c767c5042aa703..4fa7f0fcaf69a24fbf3270d2db7019ee7924b58d 100644 (file)
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1230,7 +1230,7 @@ init_teximage_fields_ms(struct gl_context *ctx,
 
    target = img->TexObject->Target;
    img->_BaseFormat = _mesa_base_tex_format( ctx, internalFormat );
-   ASSERT(img->_BaseFormat > 0);
+   ASSERT(img->_BaseFormat != -1);
    img->InternalFormat = internalFormat;
    img->Border = border;
    img->Width = width;