freedreno/ir3: only unminify txf coords on a3xx

Seems like a4xx gets this right.

Signed-off-by: Rob Clark <robclark@freedesktop.org>

diff --git a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
index 5c215a55a365c881fa40e5b7220dc547993a07f4..a9a8df3bc3be45ba3533c2277a6fed574767e3a8 100644 (file)
--- a/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
+++ b/src/gallium/drivers/freedreno/ir3/ir3_compiler_nir.c
@@ -109,6 +109,11 @@ struct ir3_compile {
         */
        bool levels_add_one;
 
+       /* on a3xx, we need to scale up integer coords for isaml based
+        * on LoD:
+        */
+       bool unminify_coords;
+
        /* for looking up which system value is which */
        unsigned sysval_semantics[8];
 
@@ -225,10 +230,12 @@ compile_init(struct ir3_compiler *compiler,
                /* need special handling for "flat" */
                ctx->flat_bypass = true;
                ctx->levels_add_one = false;
+               ctx->unminify_coords = false;
        } else {
                /* no special handling for "flat" */
                ctx->flat_bypass = false;
                ctx->levels_add_one = true;
+               ctx->unminify_coords = true;
        }
 
        ctx->compiler = compiler;
@@ -1592,11 +1599,12 @@ emit_tex(struct ir3_compile *ctx, nir_tex_instr *tex)
        tex_info(tex, &flags, &coords);
 
        /* scale up integer coords for TXF based on the LOD */
-       if (opc == OPC_ISAML) {
+       if (ctx->unminify_coords && (opc == OPC_ISAML)) {
                assert(has_lod);
                for (i = 0; i < coords; i++)
                        coord[i] = ir3_SHL_B(b, coord[i], 0, lod, 0);
        }
+
        /*
         * lay out the first argument in the proper order:
         *  - actual coordinates first