gg,sokol,stbi,gx,fontstash: cleanup for -Wimpure-v

vlib/sokol/sapp/sapp_structs.c.v

@@ -0,0 +1,104 @@
+module sapp
+
+pub struct C.sapp_desc {
+pub:
+	init_cb    fn () // these are the user-provided callbacks without user data
+	frame_cb   fn ()
+	cleanup_cb fn ()
+	event_cb   fn (&C.sapp_event) //&sapp_event)
+	fail_cb    fn (&byte)
+
+	user_data           voidptr // these are the user-provided callbacks with user data
+	init_userdata_cb    fn (voidptr)
+	frame_userdata_cb   fn (voidptr)
+	cleanup_userdata_cb fn (voidptr)
+	event_userdata_cb   fn (&C.sapp_event, voidptr)
+	fail_userdata_cb    fn (&char, voidptr)
+
+	width                        int   // the preferred width of the window / canvas
+	height                       int   // the preferred height of the window / canvas
+	sample_count                 int   // MSAA sample count
+	swap_interval                int   // the preferred swap interval (ignored on some platforms)
+	high_dpi                     bool  // whether the rendering canvas is full-resolution on HighDPI displays
+	fullscreen                   bool  // whether the window should be created in fullscreen mode
+	alpha                        bool  // whether the framebuffer should have an alpha channel (ignored on some platforms)
+	window_title                 &char // the window title as UTF-8 encoded string
+	user_cursor                  bool  // if true, user is expected to manage cursor image in SAPP_EVENTTYPE_UPDATE_CURSOR
+	enable_clipboard             bool  // enable clipboard access, default is false
+	clipboard_size               int   // max size of clipboard content in bytes
+	enable_dragndrop             bool  // enable file dropping (drag'n'drop), default is false
+	max_dropped_files            int   // max number of dropped files to process (default: 1)
+	max_dropped_file_path_length int   // max length in bytes of a dropped UTF-8 file path (default: 2048)
+	// backend-specific options
+	gl_force_gles2                bool  // if true, setup GLES2/WebGL even if GLES3/WebGL2 is available
+	win32_console_utf8            bool  // if true, set the output console codepage to UTF-8
+	win32_console_create          bool  // if true, attach stdout/stderr to a new console window
+	win32_console_attach          bool  // if true, attach stdout/stderr to parent process
+	html5_canvas_name             &char // the name (id) of the HTML5 canvas element, default is "canvas"
+	html5_canvas_resize           bool  // if true, the HTML5 canvas size is set to sapp_desc.width/height, otherwise canvas size is tracked
+	html5_preserve_drawing_buffer bool  // HTML5 only: whether to preserve default framebuffer content between frames
+	html5_premultiplied_alpha     bool  // HTML5 only: whether the rendered pixels use premultiplied alpha convention
+	html5_ask_leave_site          bool  // initial state of the internal html5_ask_leave_site flag (see sapp_html5_ask_leave_site())
+	ios_keyboard_resizes_canvas   bool  // if true, showing the iOS keyboard shrinks the canvas
+	// V patches
+	__v_native_render bool // V patch to allow for native rendering
+}
+
+pub struct Event {
+pub:
+	frame_count        u64
+	typ                EventType
+	key_code           KeyCode
+	char_code          u32
+	key_repeat         bool
+	modifiers          u32
+	mouse_button       MouseButton
+	mouse_x            f32
+	mouse_y            f32
+	mouse_dx           f32
+	mouse_dy           f32
+	scroll_x           f32
+	scroll_y           f32
+	num_touches        int
+	touches            [8]C.sapp_touchpoint
+	window_width       int
+	window_height      int
+	framebuffer_width  int
+	framebuffer_height int
+}
+
+pub struct C.sapp_event {
+pub:
+	frame_count        u64
+	@type              EventType
+	key_code           KeyCode
+	char_code          u32
+	key_repeat         bool
+	modifiers          u32
+	mouse_button       MouseButton
+	mouse_x            f32
+	mouse_y            f32
+	mouse_dx           f32
+	mouse_dy           f32
+	scroll_x           f32
+	scroll_y           f32
+	num_touches        int
+	touches            [8]C.sapp_touchpoint
+	window_width       int
+	window_height      int
+	framebuffer_width  int
+	framebuffer_height int
+}
+
+pub fn (e &C.sapp_event) str() string {
+	t := e.@type
+	return 'evt: frame_count=$e.frame_count, type=$t'
+}
+
+pub struct C.sapp_touchpoint {
+pub:
+	identifier u64
+	pos_x      f32
+	pos_y      f32
+	changed    bool
+}