Pica: Improve accuracy of immediate-mode support

This partially fixes Etrian Odyssey IV.

1 files changed, 14 insertions, 1 deletions

diff --git a/src/video_core/pica.cpp b/src/video_core/pica.cpp
index 32ad72674..ccbaf071b 100644
--- a/src/video_core/pica.cpp
+++ b/src/video_core/pica.cpp
@@ -493,12 +493,25 @@ std::string Regs::GetCommandName(int index) {
 }
 
 void Init() {
+    g_state.Reset();
 }
 
 void Shutdown() {
     Shader::Shutdown();
+}
+
+template <typename T>
+void Zero(T& o) {
+    memset(&o, 0, sizeof(o));
+}
 
-    memset(&g_state, 0, sizeof(State));
+void State::Reset() {
+    Zero(regs);
+    Zero(vs);
+    Zero(gs);
+    Zero(cmd_list);
+    Zero(immediate);
+    primitive_assembler.Reconfigure(Regs::TriangleTopology::List);
 }
 
 }