From 3ef006b5abbe78bb2ae423a7cab74d7da2f8bc08 Mon Sep 17 00:00:00 2001 From: Liam Date: Wed, 30 Nov 2022 17:16:00 -0500 Subject: shader_recompiler: add gl_Layer translation GS for older hardware --- .../frontend/maxwell/translate_program.cpp | 81 ++++++++++++++++++++++ .../frontend/maxwell/translate_program.h | 9 +++ 2 files changed, 90 insertions(+) (limited to 'src/shader_recompiler/frontend/maxwell') diff --git a/src/shader_recompiler/frontend/maxwell/translate_program.cpp b/src/shader_recompiler/frontend/maxwell/translate_program.cpp index 376aae0ea..3adbd2b16 100644 --- a/src/shader_recompiler/frontend/maxwell/translate_program.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate_program.cpp @@ -9,6 +9,7 @@ #include "common/settings.h" #include "shader_recompiler/exception.h" #include "shader_recompiler/frontend/ir/basic_block.h" +#include "shader_recompiler/frontend/ir/ir_emitter.h" #include "shader_recompiler/frontend/ir/post_order.h" #include "shader_recompiler/frontend/maxwell/structured_control_flow.h" #include "shader_recompiler/frontend/maxwell/translate/translate.h" @@ -233,6 +234,8 @@ IR::Program TranslateProgram(ObjectPool& inst_pool, ObjectPool& inst_pool, + ObjectPool& block_pool, + const HostTranslateInfo& host_info, + IR::Program& source_program, + Shader::OutputTopology output_topology) { + IR::Program program; + program.stage = Stage::Geometry; + program.output_topology = output_topology; + switch (output_topology) { + case OutputTopology::PointList: + program.output_vertices = 1; + break; + case OutputTopology::LineStrip: + program.output_vertices = 2; + break; + default: + program.output_vertices = 3; + break; + } + + program.is_geometry_passthrough = false; + program.info.loads.mask = source_program.info.stores.mask; + program.info.stores.mask = source_program.info.stores.mask; + program.info.stores.Set(IR::Attribute::Layer, true); + program.info.stores.Set(source_program.info.emulated_layer, false); + + IR::Block* current_block = block_pool.Create(inst_pool); + auto& node{program.syntax_list.emplace_back()}; + node.type = IR::AbstractSyntaxNode::Type::Block; + node.data.block = current_block; + + IR::IREmitter ir{*current_block}; + for (u32 i = 0; i < program.output_vertices; i++) { + // Assign generics from input + for (u32 j = 0; j < 32; j++) { + if (!program.info.stores.Generic(j)) { + continue; + } + + const IR::Attribute attr = IR::Attribute::Generic0X + (j * 4); + ir.SetAttribute(attr + 0, ir.GetAttribute(attr + 0, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 1, ir.GetAttribute(attr + 1, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 2, ir.GetAttribute(attr + 2, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 3, ir.GetAttribute(attr + 3, ir.Imm32(i)), ir.Imm32(0)); + } + + // Assign position from input + const IR::Attribute attr = IR::Attribute::PositionX; + ir.SetAttribute(attr + 0, ir.GetAttribute(attr + 0, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 1, ir.GetAttribute(attr + 1, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 2, ir.GetAttribute(attr + 2, ir.Imm32(i)), ir.Imm32(0)); + ir.SetAttribute(attr + 3, ir.GetAttribute(attr + 3, ir.Imm32(i)), ir.Imm32(0)); + + // Assign layer + ir.SetAttribute(IR::Attribute::Layer, ir.GetAttribute(source_program.info.emulated_layer), + ir.Imm32(0)); + + // Emit vertex + ir.EmitVertex(ir.Imm32(0)); + } + ir.EndPrimitive(ir.Imm32(0)); + + IR::Block* return_block{block_pool.Create(inst_pool)}; + IR::IREmitter{*return_block}.Epilogue(); + current_block->AddBranch(return_block); + + auto& merge{program.syntax_list.emplace_back()}; + merge.type = IR::AbstractSyntaxNode::Type::Block; + merge.data.block = return_block; + program.syntax_list.emplace_back().type = IR::AbstractSyntaxNode::Type::Return; + + program.blocks = GenerateBlocks(program.syntax_list); + program.post_order_blocks = PostOrder(program.syntax_list.front()); + Optimization::SsaRewritePass(program); + + return program; +} + } // namespace Shader::Maxwell diff --git a/src/shader_recompiler/frontend/maxwell/translate_program.h b/src/shader_recompiler/frontend/maxwell/translate_program.h index 02ede8c9c..497afe7cb 100644 --- a/src/shader_recompiler/frontend/maxwell/translate_program.h +++ b/src/shader_recompiler/frontend/maxwell/translate_program.h @@ -25,4 +25,13 @@ namespace Shader::Maxwell { void ConvertLegacyToGeneric(IR::Program& program, const RuntimeInfo& runtime_info); +// Maxwell v1 and older Nvidia cards don't support setting gl_Layer from non-geometry stages. +// This creates a workaround by setting the layer as a generic output and creating a +// passthrough geometry shader that reads the generic and sets the layer. +[[nodiscard]] IR::Program GenerateGeometryPassthrough(ObjectPool& inst_pool, + ObjectPool& block_pool, + const HostTranslateInfo& host_info, + IR::Program& source_program, + Shader::OutputTopology output_topology); + } // namespace Shader::Maxwell -- cgit v1.2.3