diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-03-27 02:55:37 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:24 -0400 |
| commit | f0031babeb3ed04aef2468840aa37f4da13b2524 (patch) | |
| tree | a92a4009b4405325d78731fd31abb9ca626ba5ef /src/shader_recompiler/backend | |
| parent | a806b29cb9bb48c4a9628700946231c9150463b5 (diff) | |
shader: Implement front face
Diffstat (limited to 'src/shader_recompiler/backend')
3 files changed, 8 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/spirv/emit_context.cpp b/src/shader_recompiler/backend/spirv/emit_context.cpp index c2d13f97c6..4d5dabcbfd 100644 --- a/src/shader_recompiler/backend/spirv/emit_context.cpp +++ b/src/shader_recompiler/backend/spirv/emit_context.cpp @@ -302,6 +302,9 @@ void EmitContext::DefineInputs(const Info& info) { base_vertex = DefineInput(*this, U32[1], spv::BuiltIn::BaseVertex); } } + if (info.loads_front_face) { + front_face = DefineInput(*this, U1, spv::BuiltIn::FrontFacing); + } for (size_t index = 0; index < info.loads_generics.size(); ++index) { if (!info.loads_generics[index]) { continue; diff --git a/src/shader_recompiler/backend/spirv/emit_context.h b/src/shader_recompiler/backend/spirv/emit_context.h index 0cb411a0ef..01b7b665d6 100644 --- a/src/shader_recompiler/backend/spirv/emit_context.h +++ b/src/shader_recompiler/backend/spirv/emit_context.h @@ -94,6 +94,7 @@ public: Id vertex_id{}; Id vertex_index{}; Id base_vertex{}; + Id front_face{}; Id input_position{}; std::array<Id, 32> input_generics{}; diff --git a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp index 8fc040f8b1..6fa16eb805 100644 --- a/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp +++ b/src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp @@ -156,6 +156,10 @@ Id EmitGetAttribute(EmitContext& ctx, IR::Attribute attr) { return ctx.OpISub(ctx.U32[1], ctx.OpLoad(ctx.U32[1], ctx.vertex_index), ctx.OpLoad(ctx.U32[1], ctx.base_vertex)); } + case IR::Attribute::FrontFace: + return ctx.OpSelect(ctx.U32[1], ctx.OpLoad(ctx.U1, ctx.front_face), + ctx.Constant(ctx.U32[1], std::numeric_limits<u32>::max()), + ctx.u32_zero_value); default: throw NotImplementedException("Read attribute {}", attr); } |