From 256cb8a82c07bd795b66435d89cdd62c3e570ea1 Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <stenzek@gmail.com>
Date: Sat, 4 Apr 2020 00:11:00 +1000
Subject: [PATCH] GL/Program: Make moveable

---
 src/common/gl/program.cpp | 26 ++++++++++++++++++++++++++
 src/common/gl/program.h   |  5 +++++
 2 files changed, 31 insertions(+)

diff --git a/src/common/gl/program.cpp b/src/common/gl/program.cpp
index 99455bcad..787653fe6 100644
--- a/src/common/gl/program.cpp
+++ b/src/common/gl/program.cpp
@@ -13,6 +13,17 @@ static GLuint s_next_bad_shader_id = 1;
 
 Program::Program() = default;
 
+Program::Program(Program&& prog)
+{
+  m_program_id = prog.m_program_id;
+  prog.m_program_id = 0;
+  m_vertex_shader_id = prog.m_vertex_shader_id;
+  prog.m_vertex_shader_id = 0;
+  m_fragment_shader_id = prog.m_fragment_shader_id;
+  prog.m_fragment_shader_id = 0;
+  m_uniform_locations = std::move(prog.m_uniform_locations);
+}
+
 Program::~Program()
 {
   Destroy();
@@ -174,6 +185,8 @@ void Program::Destroy()
     glDeleteProgram(m_program_id);
     m_program_id = 0;
   }
+
+  m_uniform_locations.clear();
 }
 
 int Program::RegisterUniform(const char* name)
@@ -505,4 +518,17 @@ void Program::BindUniformBlock(const char* name, u32 index)
     glUniformBlockBinding(m_program_id, location, index);
 }
 
+Program& Program::operator=(Program&& prog)
+{
+  Destroy();
+  m_program_id = prog.m_program_id;
+  prog.m_program_id = 0;
+  m_vertex_shader_id = prog.m_vertex_shader_id;
+  prog.m_vertex_shader_id = 0;
+  m_fragment_shader_id = prog.m_fragment_shader_id;
+  prog.m_fragment_shader_id = 0;
+  m_uniform_locations = std::move(prog.m_uniform_locations);
+  return *this;
+}
+
 } // namespace GL
\ No newline at end of file
diff --git a/src/common/gl/program.h b/src/common/gl/program.h
index ece24daaa..8144b88f8 100644
--- a/src/common/gl/program.h
+++ b/src/common/gl/program.h
@@ -9,6 +9,8 @@ class Program
 {
 public:
   Program();
+  Program(const Program&) = delete;
+  Program(Program&& prog);
   ~Program();
 
   static GLuint CompileShader(GLenum type, const std::string_view source);
@@ -78,6 +80,9 @@ public:
 
   void BindUniformBlock(const char* name, u32 index);
 
+  Program& operator=(const Program&) = delete;
+  Program& operator=(Program&& prog);
+
 private:
   static u32 s_last_program_id;