From f18a6dd1bdaffda4c3e771af3cf7cf41919ebd67 Mon Sep 17 00:00:00 2001
From: FernandoS27 <fsahmkow27@gmail.com>
Date: Fri, 16 Apr 2021 23:52:58 +0200
Subject: shader: Implement SR_Y_DIRECTION
---
src/shader_recompiler/backend/spirv/emit_spirv.h | 1 +
src/shader_recompiler/backend/spirv/emit_spirv_context_get_set.cpp | 7 +++++++
src/shader_recompiler/frontend/ir/ir_emitter.cpp | 4 ++++
src/shader_recompiler/frontend/ir/ir_emitter.h | 1 +
src/shader_recompiler/frontend/ir/opcodes.inc | 1 +
.../frontend/maxwell/translate/impl/move_special_register.cpp | 2 ++
src/shader_recompiler/profile.h | 2 ++
7 files changed, 18 insertions(+)
(limited to 'src/shader_recompiler')
diff --git a/src/shader_recompiler/backend/spirv/emit_spirv.h b/src/shader_recompiler/backend/spirv/emit_spirv.h
index d43c72f6e0..7949d08d0d 100644
--- a/src/shader_recompiler/backend/spirv/emit_spirv.h
+++ b/src/shader_recompiler/backend/spirv/emit_spirv.h
@@ -72,6 +72,7 @@ Id EmitLocalInvocationId(EmitContext& ctx);
Id EmitInvocationId(EmitContext& ctx);
Id EmitSampleId(EmitContext& ctx);
Id EmitIsHelperInvocation(EmitContext& ctx);
+Id EmitYDirection(EmitContext& ctx);
Id EmitLoadLocal(EmitContext& ctx, Id word_offset);
void EmitWriteLocal(EmitContext& ctx, Id word_offset, Id value);
Id EmitUndefU1(EmitContext& ctx);
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 e5e4c352b8..1030404c0f 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
@@ -403,6 +403,13 @@ Id EmitIsHelperInvocation(EmitContext& ctx) {
return ctx.OpLoad(ctx.U1, ctx.is_helper_invocation);
}
+Id EmitYDirection(EmitContext& ctx) {
+ if (ctx.profile.y_negate) {
+ return ctx.Constant(ctx.F32[1], -1.0f);
+ }
+ return ctx.Constant(ctx.F32[1], 1.0f);
+}
+
Id EmitLoadLocal(EmitContext& ctx, Id word_offset) {
const Id pointer{ctx.OpAccessChain(ctx.private_u32, ctx.local_memory, word_offset)};
return ctx.OpLoad(ctx.U32[1], pointer);
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index aebe7200f0..c3e8d06814 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -379,6 +379,10 @@ U1 IREmitter::IsHelperInvocation() {
return Inst<U1>(Opcode::IsHelperInvocation);
}
+F32 IREmitter::YDirection() {
+ return Inst<F32>(Opcode::YDirection);
+}
+
U32 IREmitter::LaneId() {
return Inst<U32>(Opcode::LaneId);
}
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index b9d051b43d..7e67f5e308 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -102,6 +102,7 @@ public:
[[nodiscard]] U32 InvocationId();
[[nodiscard]] U32 SampleId();
[[nodiscard]] U1 IsHelperInvocation();
+ [[nodiscard]] F32 YDirection();
[[nodiscard]] U32 LaneId();
diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc
index 1cfc2a9438..269de8ca5a 100644
--- a/src/shader_recompiler/frontend/ir/opcodes.inc
+++ b/src/shader_recompiler/frontend/ir/opcodes.inc
@@ -65,6 +65,7 @@ OPCODE(LocalInvocationId, U32x3,
OPCODE(InvocationId, U32, )
OPCODE(SampleId, U32, )
OPCODE(IsHelperInvocation, U1, )
+OPCODE(YDirection, F32, )
// Undefined
OPCODE(UndefU1, U1, )
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
index 660b84c20b..b0baff74be 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/move_special_register.cpp
@@ -150,6 +150,8 @@ enum class SpecialRegister : u64 {
return ir.SubgroupGtMask();
case SpecialRegister::SR_GEMASK:
return ir.SubgroupGeMask();
+ case SpecialRegister::SR_Y_DIRECTION:
+ return ir.BitCast<IR::U32>(ir.YDirection());
default:
throw NotImplementedException("S2R special register {}", special_register);
}
diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h
index a2c2948d50..08242184f0 100644
--- a/src/shader_recompiler/profile.h
+++ b/src/shader_recompiler/profile.h
@@ -97,6 +97,8 @@ struct Profile {
std::optional<CompareFunction> alpha_test_func;
float alpha_test_reference{};
+ bool y_negate{};
+
std::vector<TransformFeedbackVarying> xfb_varyings;
};
--
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