From 183855e396cc6918d36fbf3e38ea426e934b4e3e Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Thu, 15 Apr 2021 22:46:11 -0300
Subject: shader: Implement tessellation shaders, polygon mode and invocation
 id

---
 .../ir_opt/collect_shader_info_pass.cpp            | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'src/shader_recompiler/ir_opt')

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 617ec05ce..aadcf7999 100644
--- a/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
+++ b/src/shader_recompiler/ir_opt/collect_shader_info_pass.cpp
@@ -53,6 +53,10 @@ void GetAttribute(Info& info, IR::Attribute attribute) {
     case IR::Attribute::PointSpriteT:
         info.loads_point_coord = true;
         break;
+    case IR::Attribute::TessellationEvaluationPointU:
+    case IR::Attribute::TessellationEvaluationPointV:
+        info.loads_tess_coord = true;
+        break;
     default:
         throw NotImplementedException("Get attribute {}", attribute);
     }
@@ -94,6 +98,34 @@ void SetAttribute(Info& info, IR::Attribute attribute) {
     }
 }
 
+void GetPatch(Info& info, IR::Patch patch) {
+    if (!IR::IsGeneric(patch)) {
+        throw NotImplementedException("Reading non-generic patch {}", patch);
+    }
+    info.uses_patches.at(IR::GenericPatchIndex(patch)) = true;
+}
+
+void SetPatch(Info& info, IR::Patch patch) {
+    if (IR::IsGeneric(patch)) {
+        info.uses_patches.at(IR::GenericPatchIndex(patch)) = true;
+        return;
+    }
+    switch (patch) {
+    case IR::Patch::TessellationLodLeft:
+    case IR::Patch::TessellationLodTop:
+    case IR::Patch::TessellationLodRight:
+    case IR::Patch::TessellationLodBottom:
+        info.stores_tess_level_outer = true;
+        break;
+    case IR::Patch::TessellationLodInteriorU:
+    case IR::Patch::TessellationLodInteriorV:
+        info.stores_tess_level_inner = true;
+        break;
+    default:
+        throw NotImplementedException("Set patch {}", patch);
+    }
+}
+
 void VisitUsages(Info& info, IR::Inst& inst) {
     switch (inst.GetOpcode()) {
     case IR::Opcode::CompositeConstructF16x2:
@@ -350,6 +382,12 @@ void VisitUsages(Info& info, IR::Inst& inst) {
     case IR::Opcode::SetAttribute:
         SetAttribute(info, inst.Arg(0).Attribute());
         break;
+    case IR::Opcode::GetPatch:
+        GetPatch(info, inst.Arg(0).Patch());
+        break;
+    case IR::Opcode::SetPatch:
+        SetPatch(info, inst.Arg(0).Patch());
+        break;
     case IR::Opcode::GetAttributeIndexed:
         info.loads_indexed_attributes = true;
         break;
@@ -368,6 +406,9 @@ void VisitUsages(Info& info, IR::Inst& inst) {
     case IR::Opcode::LocalInvocationId:
         info.uses_local_invocation_id = true;
         break;
+    case IR::Opcode::InvocationId:
+        info.uses_invocation_id = true;
+        break;
     case IR::Opcode::IsHelperInvocation:
         info.uses_is_helper_invocation = true;
         break;
-- 
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