Add sdl2 and glfw examples. Build working for windows now

2019-10-20 11:30:28 -06:00 · 2019-10-20 11:30:28 -06:00 · 9983e298a0
commit 9983e298a0
parent f393fff024
90 changed files with 58339 additions and 215 deletions
--- a/examples/demo_sdl2.nim
+++ b/examples/demo_sdl2.nim
@ -0,0 +1,114 @@
+import sdl2/sdl except Color
+import sdl2/sdl_image as img, opengl
+
+import os
+import nanovg
+import perf
+import common
+
+proc events(): bool =
+  result = false
+  var e: sdl.Event
+
+  while sdl.pollEvent(addr(e)) != 0:
+
+    # Quit requested
+    if e.kind == sdl.Quit:
+      return true
+
+    # Key pressed
+    elif e.kind == sdl.KeyDown:
+      # Exit on Escape key press
+      if e.key.keysym.sym == sdl.K_Escape:
+        return true
+
+proc frameBufferSize*(window: Window): tuple[w, h: int32] =
+  var
+    fbWidth: cint
+    fbHeight: cint
+
+  window.glGetDrawableSize(fbWidth.addr, fbHeight.addr)
+
+  return (fbWidth.int32, fbHeight.int32)
+
+proc size*(window: Window): tuple[w, h: int32] =
+  var
+    width: cint
+    height: cint
+
+  window.getWindowSize(width.addr, height.addr)
+
+  return (width.int32, height.int32)
+
+proc main() =
+  let
+    fps = newGraph(RenderStyle.FPS, "Frame Time")
+    cpuGraph = newGraph(RenderStyle.MS, "CPU Time")
+  let
+    windowFlags: uint32 = sdl.WINDOW_OPENGL or sdl.WINDOW_ALLOW_HIGHDPI or sdl.WINDOW_SHOWN
+    screenWidth = 640
+    screenHeight = 480
+
+  discard sdl.glSetAttribute(sdl.GL_CONTEXT_MAJOR_VERSION, 3)
+  discard sdl.glSetAttribute(sdl.GL_CONTEXT_MINOR_VERSION, 2)
+
+  discard sdl.init(sdl.INIT_EVERYTHING)
+  let window = sdl.createWindow(
+    "SDL2 Test",
+    sdl.WINDOWPOS_CENTERED,
+    sdl.WINDOWPOS_CENTERED,
+    screenWidth, screenHeight, windowFlags
+  )
+  let context = glCreateContext(window)
+
+  discard sdl.glSetSwapInterval(0)
+
+  var done = false
+  var prevt: float = sdl.getTicks().float/1000.0
+
+  glewInit()
+  nanovg.init()
+  nanovg.loadFont(currentSourceDir()/"resources/Roboto-Regular.ttf", "sans")
+  nanovg.loadFont(currentSourceDir()/"resources/Roboto-Bold.ttf", "sans-bold")
+  nanovg.loadFont(currentSourceDir()/"resources/fa.ttf", "fa")
+  nanovg.loadFont(currentSourceDir()/"resources/entypo.ttf", "icons")
+
+  while not done:
+    let fbSize = window.frameBufferSize()
+
+    glViewPort(0, 0, fbSize.w, fbSize.h)
+    glCullFace(GL_BACK)
+    glFrontFace(GL_CCW)
+    glClearColor(0.3, 0.3, 0.32, 1.0)
+    glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT or GL_STENCIL_BUFFER_BIT)
+
+    withFrame(window):
+      let x = glyphPositions("Some仮名thing is up", 0, 0)
+      drawWindow("Title", 50, 50, 300, 400)
+      drawLabel("Hello!", 10, 10, 280, 20)
+      drawButton(ICON_TRASH, "Delete", 100, 200, 160, 28, RGBA(128, 16, 8, 255))
+      drawButton(ICON_TRASH, "Deleter", 100, 250, 160, 28, RGBA(12, 130, 80, 255))
+      drawButton("Testing", 100, 300, 160, 28)
+
+      fps.render(5, 5)
+      cpuGraph.render(210, 5)
+
+    let t: float = sdl.getTicks().float/1000.0
+    let dt = t - prevt
+    prevt = t
+
+    window.glSwapWindow()
+    done = events()
+
+    let cpuTime: float = sdl.getTicks().float/1000.0 - t
+
+    fps.update(dt)
+    cpuGraph.update(cpuTime)
+
+
+  sdl.glDeleteContext(context)
+  window.destroyWindow()
+  img.quit()
+  sdl.quit()
+
+main()