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const c = @import("c.zig");
const std = @import("std");
const os = std.os;
const panic = std.debug.panic;
const builtin = @import("builtin");
pub const is_on = if (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 anyopaque,
) callconv(.C) void {
_ = id;
_ = user;
switch (typ) {
c.GL_DEBUG_TYPE_ERROR,
c.GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR,
c.GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR,
=> {},
else => return,
}
const message = _message[0..@as(usize, @intCast(length))];
std.debug.print("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 (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});
}
}
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