iris: reemit blend state for alpha test function changes

fixes bin/fbo-alphatest-formats GL_EXT_texture_snorm

diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c
index 638a5e24e084332d037fe4739a6c0b15c72e1394..51b134b73e15f0e68044688614c43bb66053e6ff 100644 (file)
--- a/src/gallium/drivers/iris/iris_state.c
+++ b/src/gallium/drivers/iris/iris_state.c
@@ -599,6 +599,9 @@ iris_bind_zsa_state(struct pipe_context *ctx, void *state)
 
       if (cso_changed(alpha.enabled))
          ice->state.dirty |= IRIS_DIRTY_PS_BLEND | IRIS_DIRTY_BLEND_STATE;
+
+      if (cso_changed(alpha.func))
+         ice->state.dirty |= IRIS_DIRTY_BLEND_STATE;
    }
 
    ice->state.cso_zsa = new_cso;