break OSC in favor of uniform caching

1 files changed, 19 insertions, 3 deletions

diff --git a/src/debug_gl.zig b/src/debug_gl.zig
index 2fdcda0..ebb552f 100644
--- a/src/debug_gl.zig
+++ b/src/debug_gl.zig
@@ -6,11 +6,27 @@ const builtin = @import("builtin");
 
 pub const is_on = if (builtin.mode == builtin.Mode.ReleaseFast) c.GL_FALSE else c.GL_TRUE;
 
+fn glDebugMessage(source: c.GLenum, typ: c.GLenum, id: c.GLuint, severity: c.GLenum, length: c.GLsizei, _message: [*c]const u8, user: ?*const c_void) callconv(.C) void {
+    const message = _message[0..@intCast(usize, length)];
+    std.debug.warn("GL Callback [{}] {} / {}: {s}\n", .{ source, typ, severity, message });
+}
+
+pub fn init() void {
+    if (is_on == c.GL_TRUE) {
+        c.glEnable(c.GL_DEBUG_OUTPUT);
+        c.glDebugMessageCallback(glDebugMessage, null);
+    }
+}
+
 pub fn assertNoError() void {
-    if (builtin.mode != builtin.Mode.ReleaseFast) {
-        const err = c.glGetError();
-        if (err != c.GL_NO_ERROR) {
+    if (is_on == c.GL_TRUE) {
+        var err = c.glGetError();
+        while (err != c.GL_NO_ERROR) : (err = c.glGetError()) {
             panic("GL error: {}\n", .{err});
+        } else {
+            return;
         }
+
+        panic("GL Errors encountered.\n", .{err});
     }
 }