From 6a35aa6b94dbb32283003f679167de9eadf37c1b Mon Sep 17 00:00:00 2001
From: Jarrod Norwell <official.antique@gmail.com>
Date: Sat, 23 Mar 2024 11:53:26 +0800
Subject: [PATCH] Added support for Princess Peach: Showtime!

---
 .../glasm/emit_glasm_context_get_set.cpp      | 24 +++++++++++++++++++
 .../backend/glasm/glasm_emit_context.h        |  1 +
 .../glsl/emit_glsl_context_get_set.cpp        | 24 +++++++++++++++++++
 .../spirv/emit_spirv_context_get_set.cpp      | 23 ++++++++++++++++++
 4 files changed, 72 insertions(+)

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
index 1ae6136..6645699 100644
--- a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
@@ -406,6 +406,30 @@ void EmitInvocationInfo(EmitContext& ctx, IR::Inst& inst) {
     case Stage::TessellationEval:
         ctx.Add("SHL.U {}.x,primitive.vertexcount,16;", inst);
         break;
+    case Stage::Geometry: {
+        u32 vertices_count = 0;
+        switch (ctx.runtime_info.input_topology) {
+        case InputTopology::Lines:
+            vertices_count = 2;
+            break;
+        case InputTopology::LinesAdjacency:
+            vertices_count = 4;
+            break;
+        case InputTopology::Triangles:
+            vertices_count = 3;
+            break;
+        case InputTopology::TrianglesAdjacency:
+            vertices_count = 6;
+            break;
+        case InputTopology::Points:
+        default:
+            vertices_count = 1;
+            break;
+        };
+
+        ctx.Add("SHL.U {}.x,{},16;", inst, vertices_count);
+        break;
+    }
     default:
         LOG_WARNING(Shader, "(STUBBED) called");
         ctx.Add("MOV.S {}.x,0x00ff0000;", inst);
diff --git a/src/shader_recompiler/backend/glasm/glasm_emit_context.h b/src/shader_recompiler/backend/glasm/glasm_emit_context.h
index 3026766..9c01e07 100644
--- a/src/shader_recompiler/backend/glasm/glasm_emit_context.h
+++ b/src/shader_recompiler/backend/glasm/glasm_emit_context.h
@@ -11,6 +11,7 @@
 
 #include "shader_recompiler/backend/glasm/reg_alloc.h"
 #include "shader_recompiler/stage.h"
+#include "shader_recompiler/runtime_info.h"
 
 namespace Shader {
 struct Info;
diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
index 0769c1b..bacb068 100644
--- a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
+++ b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
@@ -426,6 +426,30 @@ void EmitInvocationInfo(EmitContext& ctx, IR::Inst& inst) {
     case Stage::TessellationEval:
         ctx.AddU32("{}=uint(gl_PatchVerticesIn)<<16;", inst);
         break;
+    case Stage::Geometry: {
+        u32 vertices_count = 0;
+        switch (ctx.runtime_info.input_topology) {
+        case InputTopology::Lines:
+            vertices_count = 2;
+            break;
+        case InputTopology::LinesAdjacency:
+            vertices_count = 4;
+            break;
+        case InputTopology::Triangles:
+            vertices_count = 3;
+            break;
+        case InputTopology::TrianglesAdjacency:
+            vertices_count = 6;
+            break;
+        case InputTopology::Points:
+        default:
+            vertices_count = 1;
+            break;
+        };
+
+        ctx.AddU32("{}=uint({});", inst, vertices_count << 16);
+        break;
+    }
     default:
         LOG_WARNING(Shader, "(STUBBED) called");
         ctx.AddU32("{}=uint(0x00ff0000);", inst);
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 307b39f..5af3a3d 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
@@ -549,6 +549,29 @@ Id EmitInvocationInfo(EmitContext& ctx) {
     case Stage::TessellationEval:
         return ctx.OpShiftLeftLogical(ctx.U32[1], ctx.OpLoad(ctx.U32[1], ctx.patch_vertices_in),
                                       ctx.Const(16u));
+    case Stage::Geometry: {
+        u32 vertices_count = 0;
+        switch (ctx.runtime_info.input_topology) {
+        case InputTopology::Lines:
+            vertices_count = 2;
+            break;
+        case InputTopology::LinesAdjacency:
+            vertices_count = 4;
+            break;
+        case InputTopology::Triangles:
+            vertices_count = 3;
+            break;
+        case InputTopology::TrianglesAdjacency:
+            vertices_count = 6;
+            break;
+        case InputTopology::Points:
+        default:
+            vertices_count = 1;
+            break;
+        };
+
+        return ctx.Const(vertices_count << 16);
+    }
     default:
         LOG_WARNING(Shader, "(STUBBED) called");
         return ctx.Const(0x00ff0000u);