From 0beb84466809bb66df84b94782212eebd349a65a Mon Sep 17 00:00:00 2001
From: Vsevolod Kremianskii <vkremianskii@gmail.com>
Date: Wed, 17 Mar 2021 10:03:54 +0700
Subject: [PATCH] Cleanup font on destruction

---
 src/render/font.cpp  | 29 ++++++++++++++++++++++++++---
 src/render/font.h    |  7 +++++--
 src/render/fonts.cpp |  2 +-
 3 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/src/render/font.cpp b/src/render/font.cpp
index 5f042061..34f4cff1 100644
--- a/src/render/font.cpp
+++ b/src/render/font.cpp
@@ -80,8 +80,8 @@ void Font::load(const shared_ptr<Texture> &texture) {
     }
 }
 
-void Font::initGL() {
-    if (_glInited) return;
+void Font::init() {
+    if (_inited) return;
 
     glGenBuffers(1, &_vertexBufferId);
     glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferId);
@@ -107,7 +107,30 @@ void Font::initGL() {
 
     glBindVertexArray(0);
 
-    _glInited = true;
+    _inited = true;
+}
+
+Font::~Font() {
+    deinit();
+}
+
+void Font::deinit() {
+    if (!_inited) return;
+
+    if (_vertexArrayId) {
+        glDeleteVertexArrays(1, &_vertexArrayId);
+        _vertexArrayId = 0;
+    }
+    if (_vertexBufferId) {
+        glDeleteBuffers(1, &_vertexBufferId);
+        _vertexBufferId = 0;
+    }
+    if (_indexBufferId) {
+        glDeleteBuffers(1, &_indexBufferId);
+        _indexBufferId = 0;
+    }
+
+    _inited = false;
 }
 
 void Font::draw(const string &text, const glm::mat4 &transform, const glm::vec3 &color, TextGravity gravity) {
diff --git a/src/render/font.h b/src/render/font.h
index 0d1e2dea..b004fe75 100644
--- a/src/render/font.h
+++ b/src/render/font.h
@@ -40,9 +40,12 @@ enum class TextGravity {
 class Font {
 public:
     Font() = default;
+    ~Font();
+
+    void init();
+    void deinit();
 
     void load(const std::shared_ptr<Texture> &texture);
-    void initGL();
 
     void draw(
         const std::string &text,
@@ -55,7 +58,7 @@ public:
     float height() const { return _height; }
 
 private:
-    bool _glInited { false };
+    bool _inited { false };
     std::vector<float> _vertices;
     std::vector<uint16_t> _indices;
     int _glyphCount { 0 };
diff --git a/src/render/fonts.cpp b/src/render/fonts.cpp
index ee6d1508..8ab59b52 100644
--- a/src/render/fonts.cpp
+++ b/src/render/fonts.cpp
@@ -55,7 +55,7 @@ shared_ptr<Font> Fonts::doGet(string resRef) {
     auto font = make_shared<Font>();
     font->load(texture);
     if (font) {
-        font->initGL();
+        font->init();
     }
 
     return move(font);