feat: finish ghostty pane backend integration

1 files changed, 15 insertions, 0 deletions

diff --git a/vendor/libghostty-vt/src/math.zig b/vendor/libghostty-vt/src/math.zig
new file mode 100644
index 00000000..000aa97d
--- /dev/null
+++ b/vendor/libghostty-vt/src/math.zig
@@ -0,0 +1,15 @@
+/// Matrix type
+pub const Mat = [4]F32x4;
+pub const F32x4 = @Vector(4, f32);
+
+/// 2D orthographic projection matrix
+pub fn ortho2d(left: f32, right: f32, bottom: f32, top: f32) Mat {
+    const w = right - left;
+    const h = top - bottom;
+    return .{
+        .{ 2 / w, 0, 0, 0 },
+        .{ 0, 2 / h, 0, 0 },
+        .{ 0.0, 0.0, -1.0, 0.0 },
+        .{ -(right + left) / w, -(top + bottom) / h, 0.0, 1.0 },
+    };
+}