From 8912828f487129f67a585ea5aab68380aa7c817d Mon Sep 17 00:00:00 2001
From: PancakeTAS <pancake@mgnet.work>
Date: Thu, 25 Jun 2026 07:23:27 +0200
Subject: Large documentation overhaul & main DRM device

---
 src/drm.cpp | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/gem.cpp |  2 +-
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100644 src/drm.cpp

(limited to 'src')

diff --git a/src/drm.cpp b/src/drm.cpp
new file mode 100644
index 0000000..6bb0a3a
--- /dev/null
+++ b/src/drm.cpp
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: MIT */
+
+#include "drm++/drm.hpp"
+#include "drm++/helper.hpp"
+#include "drm++/ioctl.hpp"
+
+#include <stdexcept>
+
+#include <drm.h>
+#include <unistd.h>
+
+using namespace drm;
+
+Device::Device(int fd) : m_fd(fd) {
+    if (this->m_fd < 0) {
+        throw std::invalid_argument("invalid file descriptor");
+    }
+
+    drm_auth args{
+
+    };
+    ioctl::perform(this->m_fd, DRM_IOCTL_GET_MAGIC, args);
+    this->m_magic = args.magic;
+}
+
+void Device::acquireMaster() const {
+    ioctl::perform(this->m_fd, DRM_IOCTL_SET_MASTER);
+}
+
+void Device::releaseMaster() const {
+    ioctl::perform(this->m_fd, DRM_IOCTL_DROP_MASTER);
+}
+
+void Device::authenticate(u32 magic) const {
+    drm_auth args{
+        .magic = magic
+    };
+    ioctl::perform(this->m_fd, DRM_IOCTL_AUTH_MAGIC, args);
+}
+
+void Device::destruct() noexcept {
+    if (this->m_fd < 0) {
+        return;
+    }
+
+    ::close(this->m_fd);
+    this->m_fd = -1;
+}
diff --git a/src/gem.cpp b/src/gem.cpp
index 4b81703..0572c3b 100644
--- a/src/gem.cpp
+++ b/src/gem.cpp
@@ -78,7 +78,7 @@ void Object::destruct() noexcept {
 /* Dumb buffer class */
 
 DumbBuffer::DumbBuffer(int fd, u32 width, u32 height, u32 bpp)
-        : Object(fd, -1), m_width(width), m_height(height), m_bpp(bpp) {
+        : Object(fd), m_width(width), m_height(height), m_bpp(bpp) {
     drm_mode_create_dumb args{
         .height = height,
         .width = width,
-- 
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