From 050eb6389a8867e6173644fbb6b2d13ad0db454b Mon Sep 17 00:00:00 2001 From: Caio Marcelo de Oliveira Filho Date: Mon, 1 Jul 2019 16:06:13 -0700 Subject: [PATCH] spirv: Ignore ArrayStride in OpPtrAccessChain for Workgroup MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit From OpPtrAccessChain description in the SPIR-V spec (1.4 rev 1): For objects in the Uniform, StorageBuffer, or PushConstant storage classes, the element’s address or location is calculated using a stride, which will be the Base-type’s Array Stride when the Base type is decorated with ArrayStride. For all other objects, the implementation will calculate the element’s address or location. For non-CL shaders the driver should layout the Workgroup storage class, so override any explicitly set ArrayStride in the shader. This currently fixes only the lower_workgroup_access_to_offsets case, which is used by anv. Reviewed-by: Juan A. Suarez --- src/compiler/spirv/spirv_to_nir.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c index df281f2..b9eb69c 100644 --- a/src/compiler/spirv/spirv_to_nir.c +++ b/src/compiler/spirv/spirv_to_nir.c @@ -1396,15 +1396,17 @@ vtn_handle_type(struct vtn_builder *b, SpvOp opcode, default: break; } - } - - if (storage_class == SpvStorageClassWorkgroup && - b->options->lower_workgroup_access_to_offsets) { + } else if (storage_class == SpvStorageClassWorkgroup && + b->options->lower_workgroup_access_to_offsets) { + /* Workgroup is laid out by the implementation. */ uint32_t size, align; val->type->deref = vtn_type_layout_std430(b, val->type->deref, &size, &align); val->type->length = size; val->type->align = align; + + /* Override any ArrayStride previously set. */ + val->type->stride = size; } } break; -- 2.7.4