From bb8ac183404541ca8dee31563709d5aca8de0e73 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 24 Nov 2016 03:10:52 +0000 Subject: [PATCH] radv: fix texel fetch offset with 2d arrays. The code didn't limit the offsets to the number supplied, so if we expected 3 but only got 2 we were accessing undefined memory. This fixes random failures in: dEQP-VK.glsl.texture_functions.texelfetchoffset.sampler2darray_* Reviewed-by: Bas Nieuwenhuizen Cc: "13.0" Signed-off-by: Dave Airlie --- src/amd/common/ac_nir_to_llvm.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c index 06645beb0f3..76d6d887885 100644 --- a/src/amd/common/ac_nir_to_llvm.c +++ b/src/amd/common/ac_nir_to_llvm.c @@ -3601,12 +3601,13 @@ static void visit_tex(struct nir_to_llvm_context *ctx, nir_tex_instr *instr) if (offsets && instr->op == nir_texop_txf) { nir_const_value *const_offset = nir_src_as_const_value(instr->src[const_src].src); - + int num_offsets = instr->src[const_src].src.ssa->num_components; assert(const_offset); - if (instr->coord_components > 2) + num_offsets = MIN2(num_offsets, instr->coord_components); + if (num_offsets > 2) address[2] = LLVMBuildAdd(ctx->builder, address[2], LLVMConstInt(ctx->i32, const_offset->i32[2], false), ""); - if (instr->coord_components > 1) + if (num_offsets > 1) address[1] = LLVMBuildAdd(ctx->builder, address[1], LLVMConstInt(ctx->i32, const_offset->i32[1], false), ""); address[0] = LLVMBuildAdd(ctx->builder, -- 2.30.2