From f84e1ccc7fe706e0f8553ca18c86e95a481916bc Mon Sep 17 00:00:00 2001
From: Mylloon <kennel.anri@tutanota.com>
Date: Sat, 27 May 2023 04:21:25 +0200
Subject: [PATCH] return to the previous fbo id

---
 includes/utils.h | 3 +++
 src/animations.c | 3 ++-
 src/manif.c      | 4 +++-
 src/utils.c      | 7 +++++++
 4 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/includes/utils.h b/includes/utils.h
index 320fab0..f31efee 100644
--- a/includes/utils.h
+++ b/includes/utils.h
@@ -36,4 +36,7 @@ void loadImg(const char *filename, const GLuint texture);
 // Copy a texture
 void copyTexture(const GLuint, const GLuint);
 
+// Get the current FBO ID
+GLuint getCurrentFramebufferID(void);
+
 #endif
diff --git a/src/animations.c b/src/animations.c
index b27776f..7c3cbe0 100644
--- a/src/animations.c
+++ b/src/animations.c
@@ -76,6 +76,7 @@ static void transition_draw(void (*a0)(int), void (*a1)(int), Uint32 t,
   glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
                                         GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
                                         (GLint *)&_transition_tId);
+  GLint currentFramebufferID = getCurrentFramebufferID();
 
   glBindFramebuffer(GL_FRAMEBUFFER, _transition_fbo[0]);
   glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
@@ -91,7 +92,7 @@ static void transition_draw(void (*a0)(int), void (*a1)(int), Uint32 t,
     a1(state);
   }
 
-  glBindFramebuffer(GL_FRAMEBUFFER, 0);
+  glBindFramebuffer(GL_FRAMEBUFFER, currentFramebufferID);
   glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
                          _transition_tId, 0);
 
diff --git a/src/manif.c b/src/manif.c
index 2b2287e..539bffb 100644
--- a/src/manif.c
+++ b/src/manif.c
@@ -92,6 +92,8 @@ static void draw(void) {
   gl4duLookAtf(9, 6, 0, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
   glCullFace(GL_FRONT);
 
+  GLint currentFramebufferID = getCurrentFramebufferID();
+
   glBindFramebuffer(GL_FRAMEBUFFER, _fbo);
   glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D,
                          _shadow_map_tex, 0);
@@ -100,7 +102,7 @@ static void draw(void) {
   for (int i = 0; i < HEROS_NUMBER; ++i) {
     drawManifestant(matrix_model, &_herosId[i], deplacement, GL_TRUE);
   }
-  glBindFramebuffer(GL_FRAMEBUFFER, 0);
+  glBindFramebuffer(GL_FRAMEBUFFER, currentFramebufferID);
 
   glCullFace(GL_BACK);
   glDrawBuffer(GL_COLOR_ATTACHMENT0);
diff --git a/src/utils.c b/src/utils.c
index 58c3245..f8535fe 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -88,3 +88,10 @@ void copyTexture(const GLuint src, const GLuint dst) {
   SDL_FreeSurface(s);
   glBindTexture(GL_TEXTURE_2D, 0);
 }
+
+GLuint getCurrentFramebufferID(void) {
+  GLint currentFramebufferID = 0;
+  glGetIntegerv(GL_FRAMEBUFFER_BINDING, &currentFramebufferID);
+
+  return currentFramebufferID;
+}