From 3a32710b175e78fc0f00a995a31c3994182b5c2f Mon Sep 17 00:00:00 2001
From: ice_iix <ice_ix@protonmail.ch>
Date: Sat, 6 Oct 2018 13:28:19 -0700
Subject: [PATCH] Check framebuffer status after each bind

For https://github.com/iceiix/steven/issues/5
GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT
---
 src/gl/mod.rs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/gl/mod.rs b/src/gl/mod.rs
index e13d0da..a973df8 100644
--- a/src/gl/mod.rs
+++ b/src/gl/mod.rs
@@ -819,6 +819,31 @@ pub const DEPTH_ATTACHMENT: Attachment = gl::DEPTH_ATTACHMENT;
 
 pub struct Framebuffer(u32);
 
+unsafe fn check_framebuffer_status() {
+    let status = gl::CheckFramebufferStatus(gl::FRAMEBUFFER);
+    let s =
+    match status {
+        gl::FRAMEBUFFER_UNDEFINED => "GL_FRAMEBUFFER_UNDEFINED",
+        gl::FRAMEBUFFER_INCOMPLETE_ATTACHMENT => "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT",
+        gl::FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT => "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT",
+        gl::FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER => "GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER",
+        gl::FRAMEBUFFER_INCOMPLETE_READ_BUFFER => "GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER",
+        gl::FRAMEBUFFER_UNSUPPORTED => "GL_FRAMEBUFFER_UNSUPPORTED",
+        gl::FRAMEBUFFER_INCOMPLETE_MULTISAMPLE => "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE",
+        gl::FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS => "GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS",
+
+        gl::FRAMEBUFFER_COMPLETE => "GL_FRAMEBUFFER_COMPLETE",
+        //gl::FRAMEBUFFER_INCOMPLETE_DIMENSIONS => "GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS",
+        _ => "unknown"
+    };
+
+    if status != gl::FRAMEBUFFER_COMPLETE {
+        println!("glBindFramebuffer failed, glCheckFrameBufferStatus(GL_FRAMEBUFFER) = {} {}", status, s);
+        //panic!("glBindFramebuffer failed, glCheckFrameBufferStatus(GL_FRAMEBUFFER) = {} {}", status, s);
+    }
+
+}
+
 impl Framebuffer {
     pub fn new() -> Framebuffer {
         let mut fb = Framebuffer(0);
@@ -831,18 +856,21 @@ impl Framebuffer {
     pub fn bind(&self) {
         unsafe {
             gl::BindFramebuffer(gl::FRAMEBUFFER, self.0);
+            check_framebuffer_status();
         }
     }
 
     pub fn bind_read(&self) {
         unsafe {
             gl::BindFramebuffer(gl::READ_FRAMEBUFFER, self.0);
+            check_framebuffer_status();
         }
     }
 
     pub fn bind_draw(&self) {
         unsafe {
             gl::BindFramebuffer(gl::DRAW_FRAMEBUFFER, self.0);
+            check_framebuffer_status();
         }
     }