yog-runtime 0.108.0

//! JNI: client-side entry points (ABI minor 10).
use crate::gfx_table::GFX_FN_TABLE;
use crate::gl_context::GL;
use crate::gl_context::GL_GET_PROGRAM_BINARY;
use crate::gl_context::GL_GET_PROGRAM_IV;
use crate::gl_context::GL_PROGRAM_BINARY;
use crate::gl_context::GlCtx;
use crate::handlers::UiLayer;
use crate::handlers::handlers;
use jni::JNIEnv;
use jni::objects::JClass;
use jni::objects::JFloatArray;
use jni::sys::jfloat;
use jni::sys::jint;
use yog_abi::YogStr;

// ── ABI minor 10 — client-side JNI entry points ───────────────────────────────

/// The host's GL function pointer for `sym` (0 if it has none).
pub(super) fn gl_proc_address(sym: &str) -> usize {
    let ptr: Option<i64> = unsafe { bridge!("glProcAddress", [S(YogStr::from_str(sym))]) };
    ptr.unwrap_or(0) as usize
}

#[unsafe(no_mangle)]
pub extern "system" fn Java_dev_yog_NativeBridge_nativeGlInit<'l>(
    _env: JNIEnv<'l>,
    _class: JClass<'l>,
) {
    if GL.get().is_some() {
        return;
    }
    let mut raw_get_binary: usize = 0;
    let mut raw_prog_binary: usize = 0;
    let gl = unsafe {
        glow::Context::from_loader_function(|sym| {
            let ptr = gl_proc_address(sym);
            // Capture extension pointers while the loader runs.
            match sym {
                "glGetProgramBinary" => raw_get_binary = ptr,
                "glProgramBinary" => raw_prog_binary = ptr,
                _ => {}
            }
            ptr as *const _
        })
    };
    let _ = GL.set(GlCtx(gl));
    let _ = GL_GET_PROGRAM_BINARY.set((raw_get_binary != 0).then_some(raw_get_binary));
    let _ = GL_PROGRAM_BINARY.set((raw_prog_binary != 0).then_some(raw_prog_binary));
    // `glGetProgramiv` is a core function; always available.  We look it up once here
    // to avoid depending on glow internals for the PROGRAM_BINARY_LENGTH query.
    let get_program_iv = gl_proc_address("glGetProgramiv");
    let _ = GL_GET_PROGRAM_IV.set((get_program_iv != 0).then_some(get_program_iv));
}

#[unsafe(no_mangle)]
pub extern "system" fn Java_dev_yog_NativeBridge_nativeOnHudRender<'l>(
    _env: JNIEnv<'l>,
    _class: JClass<'l>,
    delta_tick: jfloat,
    screen_w: jint,
    screen_h: jint,
    scale_factor: jfloat,
    player_x: jfloat,
    player_y: jfloat,
    player_z: jfloat,
) {
    let h = handlers();
    let mut gfx = GFX_FN_TABLE;
    gfx.screen_w = screen_w;
    gfx.screen_h = screen_h;
    gfx.delta_tick = delta_tick;
    gfx.scale_factor = scale_factor;
    gfx.player_pos = [player_x, player_y, player_z];

    crate::gfx_frame::drawing(&gfx, || {
        crate::bus::emitted(&yog_event::client::render::Hud { delta_tick })
    });

    // Render active book UIs.
    let active_layers: Vec<UiLayer> = h.active_uis.lock().clone();
    let sw = screen_w as f32;
    let sh = screen_h as f32;
    let ctx = unsafe { yog_gfx::GfxContext::from_raw(&gfx as *const _) };
    let mut renderers = h.book_renderers.lock();
    for layer in &active_layers {
        if !layer.visible {
            continue;
        }
        if let Some(renderer) = renderers.get_mut(&layer.id) {
            renderer.render(&ctx, sw, sh);
        }
    }
}

#[unsafe(no_mangle)]
pub extern "system" fn Java_dev_yog_NativeBridge_nativeOnWorldRender<'l>(
    env: JNIEnv<'l>,
    _class: JClass<'l>,
    delta_tick: jfloat,
    screen_w: jint,
    screen_h: jint,
    scale_factor: jfloat,
    view_proj_arr: JFloatArray<'l>,
    cam_x: jfloat,
    cam_y: jfloat,
    cam_z: jfloat,
    player_x: jfloat,
    player_y: jfloat,
    player_z: jfloat,
) {
    if !crate::bus::heard::<yog_event::client::render::World>() {
        return;
    }
    let mut view_proj = [0f32; 16];
    if env
        .get_float_array_region(&view_proj_arr, 0, &mut view_proj)
        .is_err()
    {
        return;
    }
    let mut gfx = GFX_FN_TABLE;
    gfx.screen_w = screen_w;
    gfx.screen_h = screen_h;
    gfx.delta_tick = delta_tick;
    gfx.scale_factor = scale_factor;
    gfx.view_proj = view_proj;
    gfx.camera_pos = [cam_x, cam_y, cam_z];
    gfx.player_pos = [player_x, player_y, player_z];
    crate::gfx_frame::drawing(&gfx, || {
        crate::bus::emitted(&yog_event::client::render::World { delta_tick })
    });
}