From e382890e25c0d95b0765ec00126f27dacc0e1da9 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Samuel=20Iglesias=20Gons=C3=A1lvez?= Date: Mon, 9 Oct 2017 12:24:06 +0200 Subject: [PATCH] nir: set default lod to texture opcodes that needed it but don't provide it MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit v2: - Use helper to add a new source to the texture instruction. v3: - Use nir_tex_instr_src_index() to simplify the patch (Jason). Signed-off-by: Samuel Iglesias Gonsálvez Reviewed-by: Lionel Landwerlin Reviewed-by: Jason Ekstrand --- src/compiler/nir/nir_lower_tex.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/src/compiler/nir/nir_lower_tex.c b/src/compiler/nir/nir_lower_tex.c index 65681de..c6f001b 100644 --- a/src/compiler/nir/nir_lower_tex.c +++ b/src/compiler/nir/nir_lower_tex.c @@ -813,6 +813,19 @@ nir_lower_tex_block(nir_block *block, nir_builder *b, progress = true; continue; } + + /* TXF, TXS and TXL require a LOD but not everything we implement using those + * three opcodes provides one. Provide a default LOD of 0. + */ + if ((nir_tex_instr_src_index(tex, nir_tex_src_lod) == -1) && + (tex->op == nir_texop_txf || tex->op == nir_texop_txs || + tex->op == nir_texop_txl || tex->op == nir_texop_query_levels || + (tex->op == nir_texop_tex && b->shader->stage != MESA_SHADER_FRAGMENT))) { + b->cursor = nir_before_instr(&tex->instr); + nir_tex_instr_add_src(tex, nir_tex_src_lod, nir_src_for_ssa(nir_imm_int(b, 0))); + progress = true; + continue; + } } return progress; -- 2.7.4