From b6ae3369a1554c75edf24ddf632b6e3f77012a30 Mon Sep 17 00:00:00 2001
From: CRy386i <tetris123480@gmail.com>
Date: Sun, 23 Feb 2025 12:10:07 +0200
Subject: [PATCH] Unheavly _GLBuffer and create new fanction initVertexArray

---
 opengl.c | 30 ++++++++++++++++++++++--------
 opengl.h |  3 ++-
 2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/opengl.c b/opengl.c
index bce0a4a..0285c39 100644
--- a/opengl.c
+++ b/opengl.c
@@ -91,6 +91,24 @@ void createProgram ( GLuint *shaders, int len )
     }
 }
 
+void initVertexArray ( void )
+{
+    glGenVertexArrays(1, &sp.vao);
+    glBindVertexArray(sp.vao);
+
+    glEnableVertexAttribArray(0);
+    glEnableVertexAttribArray(1);
+    glBindBuffer(GL_ARRAY_BUFFER, sp.vbo);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sp.ibo);
+    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, 0);
+    glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, 0, (void *) (4*4*sizeof(float)));
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sp.ibo);
+
+    glBindVertexArray(0);
+}
+
 void createBuffer ( void )
 {
     GLushort indices[] = {
@@ -128,6 +146,7 @@ void setUniformLocation ( void )
 void startShaderProg ( void )
 {
     createBuffer();
+    initVertexArray();
 
     GLuint shaders[] = {
         createShader("vertex.glsl", GL_VERTEX_SHADER),
@@ -152,16 +171,11 @@ void _GLBuffer( void )
     glClearDepth(1.0f);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     glUseProgram(sp.program);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
 
-    glEnableVertexAttribArray(0);
-    glEnableVertexAttribArray(1);
-    glBindBuffer(GL_ARRAY_BUFFER, sp.vbo);
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sp.ibo);
-    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, 0);
-    glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, 0, (void *) (4*4*sizeof(float)));
+    glBindVertexArray(sp.vao);
     glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
-    glDisableVertexAttribArray(0);
-    glDisableVertexAttribArray(1);
 
+    glBindVertexArray(0);
     glUseProgram(0);
 }
diff --git a/opengl.h b/opengl.h
index 8d0285d..4409338 100644
--- a/opengl.h
+++ b/opengl.h
@@ -5,9 +5,10 @@ typedef struct {
     SDL_Window* window;
     SDL_GLContext glcontext;
 } _glWindows_t;
-    
+
 typedef struct {
     GLuint program;
+    GLuint vao;
     GLuint vbo;
     GLuint ibo;
     GLuint projMatrLoc;