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 8ea730c80..80b4bbd27 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 @@ -123,34 +123,36 @@ std::optional OutputAttrPointer(EmitContext& ctx, IR::Attribute attr) { } Id GetCbuf(EmitContext& ctx, Id result_type, Id UniformDefinitions::*member_ptr, u32 element_size, - const IR::Value& binding, const IR::Value& offset) { + const IR::Value& binding, const IR::Value& offset, const Id indirect_func) { + Id buffer_offset; + const Id uniform_type{ctx.uniform_types.*member_ptr}; + if (offset.IsImmediate()) { + // Hardware been proved to read the aligned offset (e.g. LDC.U32 at 6 will read offset 4) + const Id imm_offset{ctx.Const(offset.U32() / element_size)}; + buffer_offset = imm_offset; + } else if (element_size > 1) { + const u32 log2_element_size{static_cast(std::countr_zero(element_size))}; + const Id shift{ctx.Const(log2_element_size)}; + buffer_offset = ctx.OpShiftRightArithmetic(ctx.U32[1], ctx.Def(offset), shift); + } else { + buffer_offset = ctx.Def(offset); + } if (!binding.IsImmediate()) { - throw NotImplementedException("Constant buffer indexing"); + return ctx.OpFunctionCall(result_type, indirect_func, ctx.Def(binding), buffer_offset); } const Id cbuf{ctx.cbufs[binding.U32()].*member_ptr}; - const Id uniform_type{ctx.uniform_types.*member_ptr}; - if (!offset.IsImmediate()) { - Id index{ctx.Def(offset)}; - if (element_size > 1) { - const u32 log2_element_size{static_cast(std::countr_zero(element_size))}; - const Id shift{ctx.Const(log2_element_size)}; - index = ctx.OpShiftRightArithmetic(ctx.U32[1], ctx.Def(offset), shift); - } - const Id access_chain{ctx.OpAccessChain(uniform_type, cbuf, ctx.u32_zero_value, index)}; - return ctx.OpLoad(result_type, access_chain); - } - // Hardware been proved to read the aligned offset (e.g. LDC.U32 at 6 will read offset 4) - const Id imm_offset{ctx.Const(offset.U32() / element_size)}; - const Id access_chain{ctx.OpAccessChain(uniform_type, cbuf, ctx.u32_zero_value, imm_offset)}; + const Id access_chain{ctx.OpAccessChain(uniform_type, cbuf, ctx.u32_zero_value, buffer_offset)}; return ctx.OpLoad(result_type, access_chain); } Id GetCbufU32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { - return GetCbuf(ctx, ctx.U32[1], &UniformDefinitions::U32, sizeof(u32), binding, offset); + return GetCbuf(ctx, ctx.U32[1], &UniformDefinitions::U32, sizeof(u32), binding, offset, + ctx.load_const_func_u32); } Id GetCbufU32x4(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { - return GetCbuf(ctx, ctx.U32[4], &UniformDefinitions::U32x4, sizeof(u32[4]), binding, offset); + return GetCbuf(ctx, ctx.U32[4], &UniformDefinitions::U32x4, sizeof(u32[4]), binding, offset, + ctx.load_const_func_u32x4); } Id GetCbufElement(EmitContext& ctx, Id vector, const IR::Value& offset, u32 index_offset) { @@ -201,7 +203,8 @@ void EmitGetIndirectBranchVariable(EmitContext&) { Id EmitGetCbufU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing && ctx.profile.support_int8) { - const Id load{GetCbuf(ctx, ctx.U8, &UniformDefinitions::U8, sizeof(u8), binding, offset)}; + const Id load{GetCbuf(ctx, ctx.U8, &UniformDefinitions::U8, sizeof(u8), binding, offset, + ctx.load_const_func_u8)}; return ctx.OpUConvert(ctx.U32[1], load); } Id element{}; @@ -217,7 +220,8 @@ Id EmitGetCbufU8(EmitContext& ctx, const IR::Value& binding, const IR::Value& of Id EmitGetCbufS8(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing && ctx.profile.support_int8) { - const Id load{GetCbuf(ctx, ctx.S8, &UniformDefinitions::S8, sizeof(s8), binding, offset)}; + const Id load{GetCbuf(ctx, ctx.S8, &UniformDefinitions::S8, sizeof(s8), binding, offset, + ctx.load_const_func_u8)}; return ctx.OpSConvert(ctx.U32[1], load); } Id element{}; @@ -233,8 +237,8 @@ Id EmitGetCbufS8(EmitContext& ctx, const IR::Value& binding, const IR::Value& of Id EmitGetCbufU16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing && ctx.profile.support_int16) { - const Id load{ - GetCbuf(ctx, ctx.U16, &UniformDefinitions::U16, sizeof(u16), binding, offset)}; + const Id load{GetCbuf(ctx, ctx.U16, &UniformDefinitions::U16, sizeof(u16), binding, offset, + ctx.load_const_func_u16)}; return ctx.OpUConvert(ctx.U32[1], load); } Id element{}; @@ -250,8 +254,8 @@ Id EmitGetCbufU16(EmitContext& ctx, const IR::Value& binding, const IR::Value& o Id EmitGetCbufS16(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing && ctx.profile.support_int16) { - const Id load{ - GetCbuf(ctx, ctx.S16, &UniformDefinitions::S16, sizeof(s16), binding, offset)}; + const Id load{GetCbuf(ctx, ctx.S16, &UniformDefinitions::S16, sizeof(s16), binding, offset, + ctx.load_const_func_u16)}; return ctx.OpSConvert(ctx.U32[1], load); } Id element{}; @@ -276,7 +280,8 @@ Id EmitGetCbufU32(EmitContext& ctx, const IR::Value& binding, const IR::Value& o Id EmitGetCbufF32(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing) { - return GetCbuf(ctx, ctx.F32[1], &UniformDefinitions::F32, sizeof(f32), binding, offset); + return GetCbuf(ctx, ctx.F32[1], &UniformDefinitions::F32, sizeof(f32), binding, offset, + ctx.load_const_func_f32); } else { const Id vector{GetCbufU32x4(ctx, binding, offset)}; return ctx.OpBitcast(ctx.F32[1], GetCbufElement(ctx, vector, offset, 0u)); @@ -285,8 +290,8 @@ Id EmitGetCbufF32(EmitContext& ctx, const IR::Value& binding, const IR::Value& o Id EmitGetCbufU32x2(EmitContext& ctx, const IR::Value& binding, const IR::Value& offset) { if (ctx.profile.support_descriptor_aliasing) { - return GetCbuf(ctx, ctx.U32[2], &UniformDefinitions::U32x2, sizeof(u32[2]), binding, - offset); + return GetCbuf(ctx, ctx.U32[2], &UniformDefinitions::U32x2, sizeof(u32[2]), binding, offset, + ctx.load_const_func_u32x2); } else { const Id vector{GetCbufU32x4(ctx, binding, offset)}; return ctx.OpCompositeConstruct(ctx.U32[2], GetCbufElement(ctx, vector, offset, 0u), diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp index cd90c084a..aa5b6c9b7 100644 --- a/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp +++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.cpp @@ -464,6 +464,7 @@ EmitContext::EmitContext(const Profile& profile_, const RuntimeInfo& runtime_inf DefineSharedMemory(program); DefineSharedMemoryFunctions(program); DefineConstantBuffers(program.info, uniform_binding); + DefineConstantBufferIndirectFunctions(program.info); DefineStorageBuffers(program.info, storage_binding); DefineTextureBuffers(program.info, texture_binding); DefineImageBuffers(program.info, image_binding); @@ -993,7 +994,7 @@ void EmitContext::DefineConstantBuffers(const Info& info, u32& binding) { } return; } - IR::Type types{info.used_constant_buffer_types}; + IR::Type types{info.used_constant_buffer_types | info.used_indirect_cbuf_types}; if (True(types & IR::Type::U8)) { if (profile.support_int8) { DefineConstBuffers(*this, info, &UniformDefinitions::U8, binding, U8, 'u', sizeof(u8)); @@ -1027,6 +1028,62 @@ void EmitContext::DefineConstantBuffers(const Info& info, u32& binding) { binding += static_cast(info.constant_buffer_descriptors.size()); } +void EmitContext::DefineConstantBufferIndirectFunctions(const Info& info) { + if (!info.uses_cbuf_indirect) { + return; + } + const auto make_accessor{[&](Id buffer_type, Id UniformDefinitions::*member_ptr) { + const Id func_type{TypeFunction(buffer_type, U32[1], U32[1])}; + const Id func{OpFunction(buffer_type, spv::FunctionControlMask::MaskNone, func_type)}; + const Id binding{OpFunctionParameter(U32[1])}; + const Id offset{OpFunctionParameter(U32[1])}; + + AddLabel(); + + const Id merge_label{OpLabel()}; + const Id uniform_type{uniform_types.*member_ptr}; + + std::array buf_labels; + std::array buf_literals; + for (u32 i = 0; i < Info::MAX_CBUFS; i++) { + buf_labels[i] = OpLabel(); + buf_literals[i] = Sirit::Literal{i}; + } + OpSelectionMerge(merge_label, spv::SelectionControlMask::MaskNone); + OpSwitch(binding, buf_labels[0], buf_literals, buf_labels); + for (u32 i = 0; i < Info::MAX_CBUFS; i++) { + AddLabel(buf_labels[i]); + const Id cbuf{cbufs[i].*member_ptr}; + const Id access_chain{OpAccessChain(uniform_type, cbuf, u32_zero_value, offset)}; + const Id result{OpLoad(buffer_type, access_chain)}; + OpReturnValue(result); + } + AddLabel(merge_label); + OpUnreachable(); + OpFunctionEnd(); + return func; + }}; + IR::Type types{info.used_indirect_cbuf_types}; + if (True(types & IR::Type::U8)) { + load_const_func_u8 = make_accessor(U8, &UniformDefinitions::U8); + } + if (True(types & IR::Type::U16)) { + load_const_func_u16 = make_accessor(U16, &UniformDefinitions::U16); + } + if (True(types & IR::Type::F32)) { + load_const_func_f32 = make_accessor(F32[1], &UniformDefinitions::F32); + } + if (True(types & IR::Type::U32)) { + load_const_func_u32 = make_accessor(U32[1], &UniformDefinitions::U32); + } + if (True(types & IR::Type::U32x2)) { + load_const_func_u32x2 = make_accessor(U32[2], &UniformDefinitions::U32x2); + } + if (True(types & IR::Type::U32x4)) { + load_const_func_u32x4 = make_accessor(U32[4], &UniformDefinitions::U32x4); + } +} + void EmitContext::DefineStorageBuffers(const Info& info, u32& binding) { if (info.storage_buffers_descriptors.empty()) { return; diff --git a/src/shader_recompiler/backend/spirv/spirv_emit_context.h b/src/shader_recompiler/backend/spirv/spirv_emit_context.h index f87138f7e..906a1dc2c 100644 --- a/src/shader_recompiler/backend/spirv/spirv_emit_context.h +++ b/src/shader_recompiler/backend/spirv/spirv_emit_context.h @@ -294,6 +294,13 @@ public: std::vector interfaces; + Id load_const_func_u8{}; + Id load_const_func_u16{}; + Id load_const_func_u32{}; + Id load_const_func_f32{}; + Id load_const_func_u32x2{}; + Id load_const_func_u32x4{}; + private: void DefineCommonTypes(const Info& info); void DefineCommonConstants(); @@ -302,6 +309,7 @@ private: void DefineSharedMemory(const IR::Program& program); void DefineSharedMemoryFunctions(const IR::Program& program); void DefineConstantBuffers(const Info& info, u32& binding); + void DefineConstantBufferIndirectFunctions(const Info& info); void DefineStorageBuffers(const Info& info, u32& binding); void DefineTextureBuffers(const Info& info, u32& binding); void DefineImageBuffers(const Info& info, u32& binding); diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp index 2300088e3..8007a4d46 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp @@ -11,10 +11,20 @@ namespace Shader::Maxwell { using namespace LDC; namespace { std::pair Slot(IR::IREmitter& ir, Mode mode, const IR::U32& imm_index, - const IR::U32& reg, const IR::U32& imm) { + const IR::U32& reg, const IR::U32& imm_offset) { switch (mode) { case Mode::Default: - return {imm_index, ir.IAdd(reg, imm)}; + return {imm_index, ir.IAdd(reg, imm_offset)}; + case Mode::IS: { + // Segmented addressing mode + // Ra+imm_offset points into a flat mapping of const buffer + // address space + const IR::U32 address{ir.IAdd(reg, imm_offset)}; + const IR::U32 index{ir.BitFieldExtract(address, ir.Imm32(16), ir.Imm32(16))}; + const IR::U32 offset{ir.BitFieldExtract(address, ir.Imm32(0), ir.Imm32(16))}; + + return {ir.IAdd(index, imm_index), offset}; + } default: break; } diff --git a/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp b/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp index bfd2ae650..0b2c60842 100644 --- a/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp +++ b/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp @@ -29,6 +29,46 @@ void AddConstantBufferDescriptor(Info& info, u32 index, u32 count) { }); } +void AddRegisterIndexedLdc(Info& info) { + info.uses_cbuf_indirect = true; + + // The shader can use any possible constant buffer + info.constant_buffer_mask = (1 << Info::MAX_CBUFS) - 1; + + auto& cbufs{info.constant_buffer_descriptors}; + cbufs.clear(); + for (u32 i = 0; i < Info::MAX_CBUFS; i++) { + cbufs.push_back(ConstantBufferDescriptor{.index = i, .count = 1}); + + // The shader can use any possible access size + info.constant_buffer_used_sizes[i] = 0x10'000; + } +} + +u32 GetElementSize(IR::Type& used_type, Shader::IR::Opcode opcode) { + switch (opcode) { + case IR::Opcode::GetCbufU8: + case IR::Opcode::GetCbufS8: + used_type |= IR::Type::U8; + return 1; + case IR::Opcode::GetCbufU16: + case IR::Opcode::GetCbufS16: + used_type |= IR::Type::U16; + return 2; + case IR::Opcode::GetCbufU32: + used_type |= IR::Type::U32; + return 4; + case IR::Opcode::GetCbufF32: + used_type |= IR::Type::F32; + return 4; + case IR::Opcode::GetCbufU32x2: + used_type |= IR::Type::U32x2; + return 8; + default: + throw InvalidArgument("Invalid opcode {}", opcode); + } +} + void GetPatch(Info& info, IR::Patch patch) { if (!IR::IsGeneric(patch)) { throw NotImplementedException("Reading non-generic patch {}", patch); @@ -463,42 +503,18 @@ void VisitUsages(Info& info, IR::Inst& inst) { case IR::Opcode::GetCbufU32x2: { const IR::Value index{inst.Arg(0)}; const IR::Value offset{inst.Arg(1)}; - if (!index.IsImmediate()) { - throw NotImplementedException("Constant buffer with non-immediate index"); - } - AddConstantBufferDescriptor(info, index.U32(), 1); - u32 element_size{}; - switch (inst.GetOpcode()) { - case IR::Opcode::GetCbufU8: - case IR::Opcode::GetCbufS8: - info.used_constant_buffer_types |= IR::Type::U8; - element_size = 1; - break; - case IR::Opcode::GetCbufU16: - case IR::Opcode::GetCbufS16: - info.used_constant_buffer_types |= IR::Type::U16; - element_size = 2; - break; - case IR::Opcode::GetCbufU32: - info.used_constant_buffer_types |= IR::Type::U32; - element_size = 4; - break; - case IR::Opcode::GetCbufF32: - info.used_constant_buffer_types |= IR::Type::F32; - element_size = 4; - break; - case IR::Opcode::GetCbufU32x2: - info.used_constant_buffer_types |= IR::Type::U32x2; - element_size = 8; - break; - default: - break; - } - u32& size{info.constant_buffer_used_sizes[index.U32()]}; - if (offset.IsImmediate()) { - size = Common::AlignUp(std::max(size, offset.U32() + element_size), 16u); + if (index.IsImmediate()) { + AddConstantBufferDescriptor(info, index.U32(), 1); + u32 element_size = GetElementSize(info.used_constant_buffer_types, inst.GetOpcode()); + u32& size{info.constant_buffer_used_sizes[index.U32()]}; + if (offset.IsImmediate()) { + size = Common::AlignUp(std::max(size, offset.U32() + element_size), 16u); + } else { + size = 0x10'000; + } } else { - size = 0x10'000; + AddRegisterIndexedLdc(info); + GetElementSize(info.used_indirect_cbuf_types, inst.GetOpcode()); } break; } diff --git a/src/shader_recompiler/shader_info.h b/src/shader_recompiler/shader_info.h index 9f375c30e..9d36bd9eb 100644 --- a/src/shader_recompiler/shader_info.h +++ b/src/shader_recompiler/shader_info.h @@ -173,9 +173,11 @@ struct Info { bool uses_atomic_image_u32{}; bool uses_shadow_lod{}; bool uses_rescaling_uniform{}; + bool uses_cbuf_indirect{}; IR::Type used_constant_buffer_types{}; IR::Type used_storage_buffer_types{}; + IR::Type used_indirect_cbuf_types{}; u32 constant_buffer_mask{}; std::array constant_buffer_used_sizes{};