From a388ee80219f75141d2b2fa8fba78f8ee46ed5cf Mon Sep 17 00:00:00 2001
From: josh <josh@stepbro.wtf>
Date: Wed, 29 May 2024 15:27:24 -0400
Subject: [PATCH] Implement proper GL state management in DrawString2D,
 DrawString3D

---
 src/JGL/JGL.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/JGL/JGL.cpp b/src/JGL/JGL.cpp
index 35cfe42..e1c2d4d 100644
--- a/src/JGL/JGL.cpp
+++ b/src/JGL/JGL.cpp
@@ -9,7 +9,6 @@
 #include <JGL/Color3.h>
 #include <iostream>
 
-
 GLuint program;
 
 namespace JGL
@@ -147,6 +146,10 @@ namespace JGL
 
         void DrawString2D(const Color3& color, std::string text, float x, float y, float scale, u32 size) {
             glUseProgram(0); // Fixed-function pipeline.
+
+            GLfloat currentColor[4];
+            glGetFloatv(GL_CURRENT_COLOR, currentColor);
+
             glColor3f(color.r/255.f, color.g/255.f, color.b/255.f);
 
             FT_Set_Pixel_Sizes(face, 0, size);
@@ -158,8 +161,10 @@ namespace JGL
                     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[i]);
                 glBindTexture(GL_TEXTURE_2D, textures[i]);
                 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
@@ -202,7 +207,11 @@ namespace JGL
             }
             for (auto& t : textures)
                 glDeleteTextures(1, &t);
+
+            glDisable(GL_TEXTURE_2D);
+            glDisable(GL_BLEND);
             glBindTexture(GL_TEXTURE_2D, 0); // Unbind texture
+            glColor4f(currentColor[0], currentColor[1], currentColor[2], currentColor[3]); //Set draw color back to whatever it was before.
         }
     }