Module: Mesa
Branch: master
Commit: d38425ce872c4a00cfb691ae9dceca6a07afc516
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=d38425ce872c4a00cfb691ae9dceca6a07afc516

Author: Samuel Pitoiset <[email protected]>
Date:   Wed Apr 25 18:15:52 2018 +0200

ac: fix texture query LOD for 1D textures on GFX9

1D textures are allocated as 2D which means we only need
one coordinate for texture query LOD.

Fixes: 625dcbbc456 ("amd/common: pass address components individually to
ac_build_image_intrinsic")
Cc: 18.1 <[email protected]>
Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>

---

 src/amd/common/ac_nir_to_llvm.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 900c1c4afe..e4ae6ef49a 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -1309,6 +1309,14 @@ static LLVMValueRef build_tex_intrinsic(struct 
ac_nir_context *ctx,
                }
        }
 
+       /* Fixup for GFX9 which allocates 1D textures as 2D. */
+       if (instr->op == nir_texop_lod && ctx->ac.chip_class >= GFX9) {
+               if ((args->dim == ac_image_2darray ||
+                    args->dim == ac_image_2d) && !args->coords[1]) {
+                       args->coords[1] = ctx->ac.i32_0;
+               }
+       }
+
        args->attributes = AC_FUNC_ATTR_READNONE;
        return ac_build_image_opcode(&ctx->ac, args);
 }

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