1 files changed, 33 insertions, 0 deletions
diff --git a/pkg/opengl/errors.zig b/pkg/opengl/errors.zig
new file mode 100644
index 000000000..86639a53a
--- /dev/null
+++ b/pkg/opengl/errors.zig
@@ -0,0 +1,33 @@
+const std = @import("std");
+const c = @import("c.zig");
+const glad = @import("glad.zig");
+
+pub const Error = error{
+    InvalidEnum,
+    InvalidValue,
+    InvalidOperation,
+    InvalidFramebufferOperation,
+    OutOfMemory,
+
+    Unknown,
+};
+
+/// getError returns the error (if any) from the last OpenGL operation.
+pub fn getError() Error!void {
+    return switch (glad.context.GetError.?()) {
+        c.GL_NO_ERROR => {},
+        c.GL_INVALID_ENUM => Error.InvalidEnum,
+        c.GL_INVALID_VALUE => Error.InvalidValue,
+        c.GL_INVALID_OPERATION => Error.InvalidOperation,
+        c.GL_INVALID_FRAMEBUFFER_OPERATION => Error.InvalidFramebufferOperation,
+        c.GL_OUT_OF_MEMORY => Error.OutOfMemory,
+        else => Error.Unknown,
+    };
+}
+
+/// mustError just calls getError but always results in an error being returned.
+/// If getError has no error, then Unknown is returned.
+pub fn mustError() Error!void {
+    try getError();
+    return Error.Unknown;
+}