pan/bi: Copy blend shader info from compile_inputs

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7151>
diff --git a/src/panfrost/bifrost/compiler.h b/src/panfrost/bifrost/compiler.h
index 04858bd..7b58d09 100644
--- a/src/panfrost/bifrost/compiler.h
+++ b/src/panfrost/bifrost/compiler.h
@@ -445,6 +445,15 @@
        struct panfrost_sysvals sysvals;
        uint32_t quirks;
 
+       /* Is internally a blend shader? Depends on stage == FRAGMENT */
+       bool is_blend;
+
+       /* Blend constants */
+       float blend_constants[4];
+
+       /* Blend tile buffer conversion desc */
+       uint64_t blend_desc;
+
        /* During NIR->BIR */
        nir_function_impl *impl;
        bi_block *current_block;