mesa: use float to silence MSVC warning in _mesa_GetMultisamplefv()

diff --git a/src/mesa/main/multisample.c b/src/mesa/main/multisample.c
index 599cdee74075431071821b2a6ca50f6a6e8d89cf..1f3fa0c1562af8f1dcb190439c9fab75102dbe83 100644 (file)
--- a/src/mesa/main/multisample.c
+++ b/src/mesa/main/multisample.c
@@ -89,7 +89,7 @@ _mesa_GetMultisamplefv(GLenum pname, GLuint index, GLfloat * val)
 
       /* winsys FBOs are upside down */
       if (_mesa_is_winsys_fbo(ctx->DrawBuffer))
-         val[1] = 1 - val[1];
+         val[1] = 1.0f - val[1];
 
       return;
    }