gg: sokol fixes and text rendering benchmark

examples/gg/gg2.v

@@ -16,7 +16,7 @@ mut:
 
 fn main() {
 	mut app := &App{}
-	app.gg = gg.new_context({
+	app.gg = gg.new_context(
 		bg_color: gx.white
 		width: win_width
 		height: win_height
@@ -25,8 +25,8 @@ fn main() {
 		window_title: 'Empty window'
 		frame_fn: frame
 		user_data: app
-		font_path: os.resource_abs_path('assets/fonts/RobotoMono-Regular.ttf')
-	})
+		//font_path: os.resource_abs_path('assets/fonts/RobotoMono-Regular.ttf')
+	)
 	app.gg.run()
 }
 
@@ -34,17 +34,19 @@ fn frame(user_data voidptr) {
 	mut app := &App(user_data)
 	mut gg := app.gg
 	gg.begin()
+	/*
 	if gg.fons == 0 {
 		gg.init_font()
 	}
+	*/
 	app.draw()
-	C.sfons_flush(gg.fons)
+	//C.sfons_flush(gg.fons)
 	gg.end()
 }
 
 fn (app &App) draw() {
-	app.gg.draw_text_def(200,20, 'hello world!')
-	app.gg.draw_text_def(300,300, 'привет')
+	//app.gg.draw_text_def(200,20, 'hello world!')
+	//app.gg.draw_text_def(300,300, 'привет')
 	app.gg.draw_rect(10, 10, 100, 30, gx.blue)
 	app.gg.draw_empty_rect(10, 150, 80, 40, gx.green)
 }

examples/gg/gg_freetype.v

@@ -4,13 +4,61 @@ import gg
 import freetype
 import gx
 import glfw
+import time
 
 const (
 	win_width = 600
-	win_height = 300
+	win_height = 700
 	bg_color = gx.white
 )
 
+const (
+text = '
+Once upon a midnight dreary, while I pondered, weak and weary,
+Over many a quaint and curious volume of forgotten lore—
+    While I nodded, nearly napping, suddenly there came a tapping,
+As of some one gently rapping, rapping at my chamber door.
+“’Tis some visitor,” I muttered, “tapping at my chamber door—
+            Only this and nothing more.”
+
+    Ah, distinctly I remember it was in the bleak December;
+And each separate dying ember wrought its ghost upon the floor.
+    Eagerly I wished the morrow;—vainly I had sought to borrow
+    From my books surcease of sorrow—sorrow for the lost Lenore—
+For the rare and radiant maiden whom the angels name Lenore—
+            Nameless here for evermore.
+
+    And the silken, sad, uncertain rustling of each purple curtain
+Thrilled me—filled me with fantastic terrors never felt before;
+    So that now, to still the beating of my heart, I stood repeating
+    “’Tis some visitor entreating entrance at my chamber door—
+Some late visitor entreating entrance at my chamber door;—
+            This it is and nothing more.”
+
+    Presently my soul grew stronger; hesitating then no longer,
+“Sir,” said I, “or Madam, truly your forgiveness I implore;
+    But the fact is I was napping, and so gently you came rapping,
+    And so faintly you came tapping, tapping at my chamber door,
+That I scarce was sure I heard you”—here I opened wide the door;—
+            Darkness there and nothing more.
+
+Deep into that darkness peering, long I stood there wondering, fearing,
+Doubting, dreaming dreams no mortal ever dared to dream before;
+    But the silence was unbroken, and the stillness gave no token,
+    And the only word there spoken was the whispered word, “Lenore?”
+This I whispered, and an echo murmured back the word, “Lenore!”—
+            Merely this and nothing more.
+
+    Back into the chamber turning, all my soul within me burning,
+Soon again I heard a tapping somewhat louder than before.
+    “Surely,” said I, “surely that is something at my window lattice;
+      Let me see, then, what thereat is, and this mystery explore—
+Let my heart be still a moment and this mystery explore;—
+            ’Tis the wind and nothing more!”
+'
+lines = text.split('\n')
+)
+
 
 struct Context {
 mut:
@@ -27,7 +75,7 @@ fn main() {
 			use_ortho: true // This is needed for 2D drawing
 			create_window: true
 			window_title: 'Empty window'
-			window_user_ptr: ctx
+			//window_user_ptr: ctx
 		})
 	}
 	ctx.gg.window.set_user_ptr(ctx) // TODO remove this when `window_user_ptr:` works
@@ -37,13 +85,15 @@ fn main() {
 		width: win_width
 		height: win_height
 		use_ortho: true
-		font_size: 18
+		font_size: 13
 		scale: 2
 	})
 	for {
+		t := time.ticks()
 		gg.clear(bg_color)
 		ctx.draw()
 		ctx.gg.render()
+	println(time.ticks()-t)
 		if ctx.gg.window.should_close() {
 			ctx.gg.window.destroy()
 			return
@@ -52,5 +102,10 @@ fn main() {
 }
 
 fn (ctx Context) draw() {
+	mut y := 10
+	for line in lines {
+		ctx.ft.draw_text_def(10,y, line)
+		y += 15
+	}
 }