mesa/uniforms: Fix GetUniformLocation (ARB_gl_spirv)

From the ARB_gl_spirv specification, glGetUniformLocation should
return -1 when no name reflection is available.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>

diff --git a/src/mesa/main/uniforms.c b/src/mesa/main/uniforms.c
index 3b7249aabb5ce2478c5f80f4bfec6c397bbac99a..116fab21cb97b94b382ea5531c8d014b97680521 100644 (file)
--- a/src/mesa/main/uniforms.c
+++ b/src/mesa/main/uniforms.c
@@ -1007,7 +1007,7 @@ _mesa_GetUniformLocation(GLuint programObj, const GLcharARB *name)
 
    shProg = _mesa_lookup_shader_program_err(ctx, programObj,
                                            "glGetUniformLocation");
-   if (!shProg)
+   if (!shProg || !name)
       return -1;
 
    /* Page 80 (page 94 of the PDF) of the OpenGL 2.1 spec says: