Font cache

.gitea/workflows/buildtest.yml

@@ -0,0 +1,24 @@
+name: Run ReCI Build Test
+run-name: Run ReCI Build Test For ${{ gitea.repository }}.
+on: [push]
+
+jobs:
+  Explore-Gitea-Actions:
+    runs-on: ubuntu-22.04
+    env:
+      RECI_GIT: https://git.redacted.cc/maxine/ReCI
+      RECI: /RECI
+    steps:
+      - run: echo "The job was automatically triggered by a ${{ gitea.event_name }} event."
+      - run: echo "This job is now running on a ${{ runner.os }} server hosted by Gitea!"
+      - run: echo "The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - run: echo "The ${{ gitea.repository }} repository has been cloned to the runner."
+      - run: echo "The workflow is now ready to run your tests on the runner."
+      - run: echo "Install toolchain and run ReCI build test"
+      - run: apt-get update && apt-get install -y git && git clone $RECI_GIT $RECI
+      - run: bash $RECI/scripts/setup_build_tools.sh
+      - run: bash reci/scripts/install_build_dependencies.sh
+      - run: bash $RECI/scripts/run_buildtest.sh ${{ gitea.repository }}
+      - run: echo "This job's status is ${{ job.status }}."

README.md

@@ -8,4 +8,5 @@
 # Non-Goals
 * Full Rendering Engine
 * OpenGL/Vulkan Wrapper
-* Asset Loading & Management
+* Asset Loading & Management
+

include/JGL/FontCache.h

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <vector>
+#include <glad/glad.h>
+
+namespace JGL {
+    class CachedGlyph;
+    class CachedFont;
+    class FontCache;
+}
+
+class JGL::CachedGlyph {
+private:
+    GLuint texture = 0;
+    char character;
+public:
+    int x2offset = 0, y2offset = 0, w = 0, h = 0;
+    float advanceX = 0, advanceY = 0;
+
+    //CachedGlyph(GLuint texture_id, char c);
+    CachedGlyph(GLuint texture_id, char c, float x2o, float y2o, float w, float h, float advX, float advY);
+    char getCharacter();
+    const GLuint* getTexture();
+};
+
+class JGL::CachedFont {
+private:
+    std::vector<CachedGlyph*> glyphs{};
+    unsigned int font_size = 0;
+    unsigned int font_index = 0;
+public:
+    void appendGlyph(CachedGlyph* glyph);
+    void eraseGlyph(CachedGlyph* glyph);
+    void eraseGlyph(char c);
+    void eraseGlyph(GLuint texture_id);
+    unsigned int getFontSize();
+    unsigned int getFontIndex();
+    CachedGlyph* getGlyph(char c);
+    std::vector<CachedGlyph*>* getGlyphs();
+    CachedFont(unsigned int font_size, unsigned int font_index);
+};
+
+class JGL::FontCache {
+private:
+    std::vector<CachedFont*> cachedFonts = {};
+public:
+    std::vector<CachedFont*>* getFonts();
+    CachedFont* getFont(unsigned int font_size, unsigned int font_index);
+    void appendFont(CachedFont* font);
+    void newFont(unsigned int font_size, unsigned int font_index);
+    void eraseFont(CachedFont* font);
+    void purgeCache();
+};

include/JGL/JGL.h

@@ -3,16 +3,16 @@
 //
 #pragma once
 
-#include <J3ML/LinearAlgebra.h>
-#include <J3ML/LinearAlgebra/Vector2.h>
-#include <J3ML/LinearAlgebra/Vector3.h>
 #include <string>
 #include <iostream>
 #include <JGL/Color3.h>
+#include <JGL/FontCache.h>
+#include <J3ML/LinearAlgebra.h>
+#include <J3ML/LinearAlgebra/Vector2.h>
+#include <J3ML/LinearAlgebra/Vector3.h>
 #include <J3ML/Geometry/Sphere.h>
 #include <J3ML/Geometry/Capsule.h>
 #include <J3ML/Geometry/TriangleMesh.h>
-
 // OpenGL Wrapper for rendering 2D graphics primitives in both a 2D and 3D context
 namespace JGL {
 
@@ -50,7 +50,10 @@ namespace JGL {
     };
 
     bool InitTextEngine();
+    inline FontCache fontCache;
+    int LoadFont(const std::string& font_path);
 
+    void UnloadFont(int font_index);
     // TODO: implement correct coloring
 
     namespace J2D {
@@ -68,7 +71,7 @@ namespace JGL {
         void FillTexturedPolygon2D();
         void DrawSprite2D();
         void DrawPartialSprite2D();
-        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size = 16);
+        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size, unsigned int font_index);
         void FillRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size);
         void OutlineRect2D       ( const Color3& color, const Vector2& pos, const Vector2& size, float thickness = 1);
         void FillRoundedRect2D   (const Color3& color, const Vector2& pos, const Vector2& size, float radius);
@@ -87,7 +90,7 @@ namespace JGL {
         void WireframeCapsule3D(const Color3& color, const Capsule& cap, float thickness = 1);
         void FillTriangleMesh3D(const Color3& color, const TriangleMesh& mesh);
         void WireframeTriangleMesh3D(const Color3& color, const TriangleMesh& mesh, float thickness = 1);
-        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size = 12);
+        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size, unsigned int font_index);
 
         void DrawMatrixGizmo     (const Matrix3x3&, const Vector3&);
         void DrawMatrixGizmo     (const Matrix4x4&);

main.cpp

@@ -26,19 +26,17 @@ struct point {
     GLfloat t;
 };
 
+int FreeSans;
+int Jupiteroid;
+
 class JGLDemoWindow : public ReWindow::RWindow
 {
 public:
 
     JGLDemoWindow() : ReWindow::RWindow() {}
-    JGLDemoWindow(const std::string& title, int width, int height) :
-            ReWindow::RWindow(title, width, height)
-    {
+    JGLDemoWindow(const std::string& title, int width, int height) : ReWindow::RWindow(title, width, height){}
 
-    }
-
-    void initGL()
-    {
+    void initGL() {
         gladLoadGL();
 
         glMatrixMode(GL_PROJECTION);
@@ -53,14 +51,14 @@ public:
         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
         glEnable(GL_TEXTURE_2D);
 
-        JGL::InitTextEngine();
+         JGL::InitTextEngine();
+         FreeSans = JGL::LoadFont("assets/fonts/FreeSans.ttf");
+         Jupiteroid = JGL::LoadFont("assets/fonts/Jupiteroid.ttf");
     }
 
 
-    void display()
-    {
+    void display() {
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
         glOrtho(0, getSize().x, getSize().y, 0, -1, 1);
@@ -76,15 +74,13 @@ public:
                         {105, 100}
                 };
         JGL::J2D::FillTriangle2D(JGL::Colors::Yellow, tri);
-
-
-        JGL::J3D::DrawString3D(JGL::Colors::Red, "JGL Sample Text", {1, -120, 0.5f}, 2.f);
-        JGL::J2D::DrawString2D(JGL::Colors::Green, "William J. Tomasine II ", 0.f, -120.f, 1.f);
-
         JGL::J2D::DrawLine2D(JGL::Colors::Greens::DarkGreen, {10, 10}, {200, 300});
         JGL::J3D::DrawLine3D(JGL::Colors::Red, {0,0,0}, {1,0,0});
         JGL::J3D::DrawLine3D(JGL::Colors::Red, {0,0,0}, {1,0,0});
 
+        JGL::J3D::DrawString3D(JGL::Colors::Red, "JGL Sample Text", {1, -32, 0.5f}, 1.f, 32, FreeSans);
+        JGL::J2D::DrawString2D(JGL::Colors::Green, "Jupiteroid Font", 0.f, -48.f, 1.f, 16, Jupiteroid);
+
         //glFlush();
     }
 

reci/scripts/install_build_dependencies.sh

@@ -0,0 +1,7 @@
+source $RECI/shlib/info.sh
+
+INFO "Installing build dependencies for JGL"
+GROUP="Install build dependencies" RUN '
+apt-get install -yq libgl1-mesa-dev libfreetype-dev
+'
+

src/FontCache.cpp

@@ -0,0 +1,119 @@
+#include <JGL/FontCache.h>
+
+using namespace JGL;
+
+char CachedGlyph::getCharacter() {
+    return character;
+}
+
+const GLuint* CachedGlyph::getTexture() {
+    return &texture;
+}
+
+CachedGlyph::CachedGlyph(GLuint texture_id, char c, float x2offset, float y2offset, float w, float h, float advanceX, float advanceY) {
+    texture = texture_id;
+    character = c;
+    this->x2offset = x2offset;
+    this->y2offset = y2offset;
+    this->w = w;
+    this->h = h;
+    this->advanceX = advanceX;
+    this->advanceY = advanceY;
+}
+
+void JGL::CachedFont::appendGlyph(JGL::CachedGlyph* glyph) {
+    glyphs.push_back(glyph);
+}
+
+unsigned int JGL::CachedFont::getFontSize() {
+    return font_size;
+}
+
+unsigned int JGL::CachedFont::getFontIndex() {
+    return font_index;
+}
+
+CachedGlyph* JGL::CachedFont::getGlyph(char c) {
+    for (const auto& g : glyphs)
+        if (c == g->getCharacter())
+            return g;
+    return nullptr;
+}
+
+CachedFont::CachedFont(unsigned int font_size, unsigned int font_index) {
+    this->font_size = font_size;
+    this->font_index = font_index;
+}
+
+void CachedFont::eraseGlyph(CachedGlyph* glyph) {
+    if (glyph == nullptr)
+        return;
+
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i] == glyph)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+void CachedFont::eraseGlyph(char c) {
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i]->getCharacter() == c)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+void CachedFont::eraseGlyph(GLuint texture_id) {
+    for (int i = 0; i < glyphs.size(); i++)
+        if (glyphs[i]->getTexture() == &texture_id)
+            glDeleteTextures(1, glyphs[i]->getTexture()),
+            delete glyphs[i],
+            glyphs.erase(glyphs.begin() + i);
+}
+
+std::vector<CachedGlyph*>* CachedFont::getGlyphs() {
+    return &glyphs;
+}
+
+void FontCache::appendFont(CachedFont* font) {
+    cachedFonts.push_back(font);
+}
+
+void FontCache::newFont(unsigned int font_size, unsigned int font_index) {
+    auto* font = new CachedFont(font_size, font_index);
+    cachedFonts.push_back(font);
+}
+
+void FontCache::eraseFont(CachedFont* font) {
+    for (int i = 0; i < cachedFonts.size(); i++) {
+        if (cachedFonts[i] == font) {
+            for (auto& g: *cachedFonts[i]->getGlyphs())
+                cachedFonts[i]->eraseGlyph(g);
+
+            delete cachedFonts[i];
+            cachedFonts.erase(cachedFonts.begin() + i);
+        }
+    }
+}
+
+void FontCache::purgeCache() {
+    //Remove every font from the cache.
+    for (const auto& font : cachedFonts)
+        eraseFont(font);
+    cachedFonts = {};
+}
+
+std::vector<CachedFont*>* FontCache::getFonts() {
+    return &cachedFonts;
+}
+
+CachedFont* FontCache::getFont(unsigned int font_size, unsigned int font_index) {
+    if (cachedFonts.empty())
+        return nullptr;
+
+    for (auto* f : cachedFonts)
+        if (f->getFontIndex() == font_index && f->getFontSize() == font_size)
+            return f;
+    return nullptr;
+}

src/JGL.cpp

@@ -6,50 +6,68 @@
 #include <glad/glad.h>
 #include <JGL/JGL.h>
 #include <JGL/Color3.h>
-
 #if __linux__
     #include <freetype2/ft2build.h>
     #include FT_FREETYPE_H
 #endif
-
 #if _WIN32
     #include <ft2build.h>
     #include FT_FREETYPE_H
 #endif
 
 GLuint program;
-
 namespace JGL
 {
-    FT_Face face;
     FT_Library ft;
 
+    struct Font {
+        int index = 0;
+        FT_Face face;
+    };
+
+    std::vector<Font> faces;
+
     using namespace J3ML;
-
     bool InitTextEngine() {
-        constexpr u32 default_font_size = 16;
         if (FT_Init_FreeType(&ft))
-        {
-            std::cout << "Error::FREETYPE: " << std::endl;
-            return false;
-        }
-
-        if (FT_New_Face(ft, "assets/fonts/FreeSans.ttf", 0, &face))
-        {
-            std::cout << "Error::FREETYPE: Failed to load font!" << std::endl;
-            return false;
-        }
-
-        return true;
+            return true;
+        return false;
     }
 
-    namespace J2D
-    {
+    int LoadFont(const std::string &font_path) {
+        if (ft == nullptr)
+            return -1;
+
+        Font font;
+        if (FT_New_Face(ft, font_path.c_str(), 0, &font.face)) {
+            std::cout << "Error::FREETYPE: Failed to load font!" << std::endl;
+            return -1;
+        }
+
+        unsigned int newIndex = 0;
+            for (const auto& f : faces)
+                if (f.index >= newIndex)
+                    newIndex = f.index + 1;
+
+        font.index = newIndex;
+        faces.push_back(font);
+        std::cout << "Loaded font from " << font_path << " with index " << newIndex << std::endl;
+        return newIndex;
+    }
+
+    void UnloadFont(int font_index) {
+        for (int i = 0; i < faces.size(); i++)
+            if (faces[i].index == font_index)
+                FT_Done_Face(faces[i].face),
+                faces.erase(faces.begin() + i);
+    }
+
+    namespace J2D {
         void FillRect2D(const Color3 &color, const Vector2 &pos, const Vector2 &size) {
             auto vp_pos = pos;
             auto vp_size = size;
             glBegin(GL_QUADS);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
             glVertex2f(vp_pos.x, vp_pos.y);
             glVertex2f(vp_pos.x, vp_pos.y + vp_size.y);
             glVertex2f(vp_pos.x + vp_size.x, vp_pos.y + vp_size.y);
@@ -104,9 +122,8 @@ namespace JGL
             glBegin(GL_LINE_LOOP);
             GLfloat angle;
             glColor3f(color.r, color.g, color.b);
-            float step = (2.f * M_PI) / (float)subdivisions;
-            for (angle = 0.0f; angle < (2.f * M_PI); angle += step)
-            {
+            float step = (2.f * M_PI) / (float) subdivisions;
+            for (angle = 0.0f; angle < (2.f * M_PI); angle += step) {
                 GLfloat x = radius * sin(angle);
                 GLfloat y = radius * cos(angle);
                 x += center.x;
@@ -120,9 +137,8 @@ namespace JGL
             glBegin(GL_POLYGON);
             GLfloat angle;
             glColor3f(color.r, color.g, color.b);
-            float step = (2.f * M_PI) / (float)subdivisions;
-            for (angle = 0.0f; angle < (2.f * M_PI); angle += step)
-            {
+            float step = (2.f * M_PI) / (float) subdivisions;
+            for (angle = 0.0f; angle < (2.f * M_PI); angle += step) {
                 GLfloat x = radius * sin(angle);
                 GLfloat y = radius * cos(angle);
                 x += center.x;
@@ -132,61 +148,101 @@ namespace JGL
             glEnd();
         }
 
-        void OutlineTriangle2D(const Color3& color, const Triangle2D& tri)
-        {
+        void OutlineTriangle2D(const Color3 &color, const Triangle2D &tri) {
             glBegin(GL_LINE_LOOP);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
             glVertex2f(tri.A.x, tri.A.y);
             glVertex2f(tri.B.x, tri.B.y);
             glVertex2f(tri.C.x, tri.C.y);
             glEnd();
         }
 
-        void FillTriangle2D(const Color3& color, const Triangle2D& tri)
-        {
+        void FillTriangle2D(const Color3 &color, const Triangle2D &tri) {
             glBegin(GL_LINE_LOOP);
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
+            glColor3f(color.r / 255.f, color.g / 255.f, color.b / 255.f);
             glVertex2f(tri.A.x, tri.A.y);
             glVertex2f(tri.B.x, tri.B.y);
             glVertex2f(tri.C.x, tri.C.y);
             glEnd();
         }
 
-        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size) {
+        void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size, unsigned int font_index) {
             glUseProgram(0); // Fixed-function pipeline.
 
+            Font font{};
+            CachedFont* cachedFont = fontCache.getFont(size, font_index);
+
+            //If the font doesn't exist in the cache yet.
+            if (!cachedFont) {
+                fontCache.newFont(size, font_index);
+                cachedFont = fontCache.getFont(size, font_index);
+            }
+
+            //Set up the regular font.
+            for (const auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == nullptr)
+                return;
+
             GLfloat currentColor[4];
             glGetFloatv(GL_CURRENT_COLOR, currentColor);
 
-            glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
+            glColor4f(color.r / 255.f, color.g / 255.f, color.b / 255.f, 1.0f);
 
-            FT_Set_Pixel_Sizes(face, 0, size);
+            FT_Set_Pixel_Sizes(font.face, 0, size);
 
             std::vector<GLuint> textures(text.length());
-            for (int i = 0; i < text.length(); i++)
-            {
-                if (FT_Load_Char(face, text.c_str()[i], FT_LOAD_RENDER))
-                    continue;
 
-                FT_GlyphSlot g = face->glyph;
-                glEnable(GL_BLEND);
-                glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-                glActiveTexture(GL_TEXTURE0);
-                glEnable(GL_TEXTURE_2D);
-                glGenTextures(1, &textures.at(i));
-                glBindTexture(GL_TEXTURE_2D, textures[i]);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
-                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
-                glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+            glEnable(GL_TEXTURE_2D);
 
-                float x2 = x + g->bitmap_left * scale;
-                float y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
-                float w = g->bitmap.width * scale;
-                float h = g->bitmap.rows * scale;
+            //For each character
+            for (int i = 0; i < text.length(); i++) {
+                float x2, y2, w, h;
+                //If the font is in the cache already.
+                if (cachedFont->getGlyph(text.c_str()[i])) {
+                    CachedGlyph* glyph = cachedFont->getGlyph(text.c_str()[i]);
+
+                    glBindTexture(GL_TEXTURE_2D, *glyph->getTexture());
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+
+                    x2 = x + glyph->x2offset * scale;
+                    y2 = -y - glyph->y2offset * scale; // Adjust y-coordinate
+                    w = glyph->w * scale;
+                    h = glyph->h * scale;
+                    x += glyph->advanceX * scale;
+                    y += glyph->advanceY * scale;
+
+                } else {
+                    if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
+                        continue;
+
+                    FT_GlyphSlot g = font.face->glyph;
+                    glGenTextures(1, &textures.at(i));
+                    glBindTexture(GL_TEXTURE_2D, textures[i]);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
+                    glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, g->bitmap.width, g->bitmap.rows, 0, GL_ALPHA, GL_UNSIGNED_BYTE, g->bitmap.buffer);
+
+                    x2 = x + g->bitmap_left * scale;
+                    y2 = -y - g->bitmap_top * scale; // Adjust y-coordinate
+                    w = g->bitmap.width * scale;
+                    h = g->bitmap.rows * scale;
+                    x += (g->advance.x >> 6) * scale;
+                    y += (g->advance.y >> 6) * scale;
+                    cachedFont->appendGlyph(new CachedGlyph(textures.at(i), text.c_str()[i], g->bitmap_left, g->bitmap_top, g->bitmap.width, g->bitmap.rows, (g->advance.x >> 6), (g->advance.y >> 6)));
+                }
 
                 glBegin(GL_TRIANGLES);
 
@@ -209,12 +265,10 @@ namespace JGL
                 glVertex2f(x2 + w, y2);
 
                 glEnd();
-
-                x += (g->advance.x >> 6) * scale;
-                y += (g->advance.y >> 6) * scale;
             }
-            for (unsigned int& texture : textures)
-                glDeleteTextures(1, &texture);
+
+            //for (unsigned int& texture : textures)
+            //glDeleteTextures(1, &texture);
 
             glDisable(GL_TEXTURE_2D);
             glDisable(GL_BLEND);
@@ -223,7 +277,6 @@ namespace JGL
         }
     }
 
-
     namespace J3D
     {
         void DrawLine3D(const Color3& color, const Vector3& A, const Vector3& B, float thickness)
@@ -236,7 +289,7 @@ namespace JGL
             glEnd();
         }
 
-        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size)
+        void DrawString3D(const Color3& color, const std::string& text, const Vector3& pos, float scale, u32 size, unsigned int font_index)
         {
             float x = pos.x;
             float y = pos.y;
@@ -247,15 +300,25 @@ namespace JGL
             glUseProgram(0); // Fixed-function pipeline.
             glColor4f(color.r, color.g, color.b, 1.0f);
 
-            FT_Set_Pixel_Sizes(face, 0, size);
+            Font font;
+            for (auto& f : faces)
+                if (f.index == font_index)
+                    font = f;
+            if (font.face == NULL) {
+                std::cout << "null font" << std::endl;
+                return;
+            }
+
+
+            FT_Set_Pixel_Sizes(font.face, 0, size);
 
             //for (c = text.c_str(); *c; c++)
             for (int i = 0; i < text.length(); i++)
             {
-                if (FT_Load_Char(face, text.c_str()[i], FT_LOAD_RENDER))
+                if (FT_Load_Char(font.face, text.c_str()[i], FT_LOAD_RENDER))
                     continue;
 
-                FT_GlyphSlot g = face->glyph;
+                FT_GlyphSlot g = font.face->glyph;
                 glEnable(GL_BLEND);
                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
                 glActiveTexture(GL_TEXTURE0);