From ee8488ea3b99ad0632e5eac6defcef0264d8782c Mon Sep 17 00:00:00 2001 From: Rhys Perry Date: Wed, 9 Jan 2019 11:09:33 +0000 Subject: [PATCH] ac/nir,radv,radeonsi/nir: use correct indices for interpolation intrinsics Fixes artifacts in World of Warcraft when Multi-sample Alpha-Test is enabled with DXVK. It also fixes artifacts with Fallout 4's god rays with DXVK. Various piglit interpolateAt*() tests under NIR are also fixed. v2: formatting fix update commit message to include Fallout 4 and the Fixes tag Fixes: f4e499ec791 ('radv: add initial non-conformant radv vulkan driver') Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=106595 Signed-off-by: Rhys Perry --- src/amd/common/ac_nir_to_llvm.c | 2 +- src/amd/common/ac_shader_abi.h | 3 +++ src/amd/vulkan/radv_nir_to_llvm.c | 2 ++ src/gallium/drivers/radeonsi/si_shader_nir.c | 3 +++ 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c index 89c76175291..5023b96f92d 100644 --- a/src/amd/common/ac_nir_to_llvm.c +++ b/src/amd/common/ac_nir_to_llvm.c @@ -2838,7 +2838,7 @@ static LLVMValueRef visit_interp(struct ac_nir_context *ctx, LLVMValueRef src0 = NULL; nir_variable *var = nir_deref_instr_get_variable(nir_instr_as_deref(instr->src[0].ssa->parent_instr)); - int input_index = var->data.location - VARYING_SLOT_VAR0; + int input_index = ctx->abi->fs_input_attr_indices[var->data.location - VARYING_SLOT_VAR0]; switch (instr->intrinsic) { case nir_intrinsic_interp_deref_at_centroid: location = INTERP_CENTROID; diff --git a/src/amd/common/ac_shader_abi.h b/src/amd/common/ac_shader_abi.h index 6b9a91c92a9..ee18e6c1923 100644 --- a/src/amd/common/ac_shader_abi.h +++ b/src/amd/common/ac_shader_abi.h @@ -77,6 +77,9 @@ struct ac_shader_abi { */ LLVMValueRef *inputs; + /* Varying -> attribute number mapping. Also NIR-only */ + unsigned fs_input_attr_indices[MAX_VARYING]; + void (*emit_outputs)(struct ac_shader_abi *abi, unsigned max_outputs, LLVMValueRef *addrs); diff --git a/src/amd/vulkan/radv_nir_to_llvm.c b/src/amd/vulkan/radv_nir_to_llvm.c index 322b10b67a0..cd58167b766 100644 --- a/src/amd/vulkan/radv_nir_to_llvm.c +++ b/src/amd/vulkan/radv_nir_to_llvm.c @@ -2239,6 +2239,8 @@ handle_fs_inputs(struct radv_shader_context *ctx, if (LLVMIsUndef(interp_param)) ctx->shader_info->fs.flat_shaded_mask |= 1u << index; + if (i >= VARYING_SLOT_VAR0) + ctx->abi.fs_input_attr_indices[i - VARYING_SLOT_VAR0] = index; ++index; } else if (i == VARYING_SLOT_CLIP_DIST0) { int length = ctx->shader_info->info.ps.num_input_clips_culls; diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c index 64acf41679b..a1bc4cbd1aa 100644 --- a/src/gallium/drivers/radeonsi/si_shader_nir.c +++ b/src/gallium/drivers/radeonsi/si_shader_nir.c @@ -1011,6 +1011,9 @@ bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir) LLVMValueRef data[4]; unsigned loc = variable->data.location; + if (loc >= VARYING_SLOT_VAR0 && nir->info.stage == MESA_SHADER_FRAGMENT) + ctx->abi.fs_input_attr_indices[loc - VARYING_SLOT_VAR0] = input_idx / 4; + for (unsigned i = 0; i < attrib_count; i++) { /* Packed components share the same location so skip * them if we have already processed the location. -- 2.30.2