1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
//! [`egui`] bindings for [`glow`](https://github.com/grovesNL/glow).
//!
//! The main type you want to look at is [`Painter`].
//!
//! If you are writing an app, you may want to look at [`eframe`](https://docs.rs/eframe) instead.
//!
//! ## Feature flags
#![cfg_attr(feature = "document-features", doc = document_features::document_features!())]
//!

#![allow(clippy::float_cmp)]
#![allow(clippy::manual_range_contains)]
#![allow(clippy::undocumented_unsafe_blocks)]

pub mod painter;
pub use glow;
pub use painter::{CallbackFn, Painter, PainterError};
mod misc_util;
mod shader_version;
mod vao;

pub use shader_version::ShaderVersion;

#[cfg(feature = "winit")]
pub mod winit;
#[cfg(feature = "winit")]
pub use winit::*;

/// Check for OpenGL error and report it using `log::error`.
///
/// Only active in debug builds!
///
/// ``` no_run
/// # let glow_context = todo!();
/// use egui_glow::check_for_gl_error;
/// check_for_gl_error!(glow_context);
/// check_for_gl_error!(glow_context, "during painting");
/// ```
#[macro_export]
macro_rules! check_for_gl_error {
    ($gl: expr) => {{
        if cfg!(debug_assertions) {
            $crate::check_for_gl_error_impl($gl, file!(), line!(), "")
        }
    }};
    ($gl: expr, $context: literal) => {{
        if cfg!(debug_assertions) {
            $crate::check_for_gl_error_impl($gl, file!(), line!(), $context)
        }
    }};
}

/// Check for OpenGL error and report it using `log::error`.
///
/// WARNING: slow! Only use during setup!
///
/// ``` no_run
/// # let glow_context = todo!();
/// use egui_glow::check_for_gl_error_even_in_release;
/// check_for_gl_error_even_in_release!(glow_context);
/// check_for_gl_error_even_in_release!(glow_context, "during painting");
/// ```
#[macro_export]
macro_rules! check_for_gl_error_even_in_release {
    ($gl: expr) => {{
        $crate::check_for_gl_error_impl($gl, file!(), line!(), "")
    }};
    ($gl: expr, $context: literal) => {{
        $crate::check_for_gl_error_impl($gl, file!(), line!(), $context)
    }};
}

#[doc(hidden)]
pub fn check_for_gl_error_impl(gl: &glow::Context, file: &str, line: u32, context: &str) {
    use glow::HasContext as _;
    #[allow(unsafe_code)]
    let error_code = unsafe { gl.get_error() };
    if error_code != glow::NO_ERROR {
        let error_str = match error_code {
            glow::INVALID_ENUM => "GL_INVALID_ENUM",
            glow::INVALID_VALUE => "GL_INVALID_VALUE",
            glow::INVALID_OPERATION => "GL_INVALID_OPERATION",
            glow::STACK_OVERFLOW => "GL_STACK_OVERFLOW",
            glow::STACK_UNDERFLOW => "GL_STACK_UNDERFLOW",
            glow::OUT_OF_MEMORY => "GL_OUT_OF_MEMORY",
            glow::INVALID_FRAMEBUFFER_OPERATION => "GL_INVALID_FRAMEBUFFER_OPERATION",
            glow::CONTEXT_LOST => "GL_CONTEXT_LOST",
            0x8031 => "GL_TABLE_TOO_LARGE1",
            0x9242 => "CONTEXT_LOST_WEBGL",
            _ => "<unknown>",
        };

        if context.is_empty() {
            log::error!(
                "GL error, at {}:{}: {} (0x{:X}). Please file a bug at https://github.com/emilk/egui/issues",
                file,
                line,
                error_str,
                error_code,
            );
        } else {
            log::error!(
                "GL error, at {}:{} ({}): {} (0x{:X}). Please file a bug at https://github.com/emilk/egui/issues",
                file,
                line,
                context,
                error_str,
                error_code,
            );
        }
    }
}

// ---------------------------------------------------------------------------

mod profiling_scopes {
    #![allow(unused_macros)]
    #![allow(unused_imports)]

    /// Profiling macro for feature "puffin"
    macro_rules! profile_function {
        ($($arg: tt)*) => {
            #[cfg(feature = "puffin")]
            #[cfg(not(target_arch = "wasm32"))] // Disabled on web because of the coarse 1ms clock resolution there.
            puffin::profile_function!($($arg)*);
        };
    }
    pub(crate) use profile_function;

    /// Profiling macro for feature "puffin"
    macro_rules! profile_scope {
        ($($arg: tt)*) => {
            #[cfg(feature = "puffin")]
            #[cfg(not(target_arch = "wasm32"))] // Disabled on web because of the coarse 1ms clock resolution there.
            puffin::profile_scope!($($arg)*);
        };
    }
    pub(crate) use profile_scope;
}

#[allow(unused_imports)]
pub(crate) use profiling_scopes::*;