我在 OpenTK 中有以下代码：
unsafe
{
Vector3* data = (Vector3*)Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(Vector3)) * simpleVertices.Count);
Vector2* uv = (Vector2*)Marshal.AllocHGlobal(
Marshal.SizeOf(typeof(Vector2)) * simpleVertices.Count);
for(int i = 0; i < simpleVertices.Count; i++)
{
((Vector3*)data)[i] = simpleVertices[i];
Vector2 thisuv = uvData[i];
((Vector2*)uv)[i] = uvData[i];
}
GL.BindTexture(All.Texture2D, texture.GLTexture.OpenGLName);
GL.TexParameter(All.Texture2D, All.TextureWrapS, (int)TextureWrapMode.Repeat);
GL.TexParameter(All.Texture2D, All.TextureWrapT, (int)TextureWrapMode.Repeat);
byte []squareColors = new byte[simpleVertices.Count];
Random.NextBytes(squareColors);
GL.ColorPointer (vertices.Count, All.UnsignedByte, 0, squareColors);
GL.VertexPointer(3, All.Float, sizeof(Vector3), new IntPtr(data));
GL.DrawArrays(All.Triangles, 0, simpleVertices.Count);
Marshal.FreeHGlobal((IntPtr)data);
Marshal.FreeHGlobal((IntPtr)uv);
}
我知道为顶点和 uv 提供的数据是正确的（至少它们在我的 XNA 渲染器中工作正常）并且我看到的是在屏幕上正确绘制了白色多边形。
从我上面的代码中，我应该看到各种各样的颜色，因为我正在用随机数量的字节填充 squareColours（我已经验证 squareColors 被随机字节填充）但我不是，顶点都是绘制为白色。
我也尝试过绑定纹理（通过 GL.BindTexture），但也失败了。
任何想法为什么这不起作用？
编辑：当我添加启用颜色时（请参阅这篇文章的第一条评论），应用程序崩溃并显示以下输出：
堆栈跟踪：
在 OpenTK.Graphics.ES11.GL.DrawArrays (OpenTK.Graphics.ES11. All,int,int) [0x00000] in /Users/plasma/Source/iphone/monotouch/OpenGLES/OpenTK/Graphics/ES11.iPhone/GL.cs:1326 at Jabber.J3D.Shape.Draw_IOS () [0x00171] in /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/J3D/Shape_iOS.cs:136 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine 中的 Jabber.J3D.Shape.Draw () [0x00000] /J3D/Shape.cs:255 在 Jabber.J3D.PhysicShape.Draw () [0x00000] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/J3D/PhysicShape.cs:46 在 Jabber.Scene.GameScene .Draw () [0x0001d] 在 Jabber 的 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/Scene/GameScene.cs:299 中。GameScreenManager.Screen.Draw () [0x0001f] in /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/GameScreenManager/Screen.cs:150 at ChicksnVixens.Screens.GameplayScreen.Draw () [0x00000] in /Users/ ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/ChicksnVixens/Screens/GameplayScreen.cs:481 在 Jabber.GameScreenManager.ScreenManager.Draw () [0x00054] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/GameScreenManager/ ScreenManager.cs:92 在 Jabber.BaseGame.Draw (Microsoft.Xna.Framework.GameTime) [0x0002c] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/Engine/BaseGame.cs:95 在 ChicksnVixens.ChicksnVixensGame.Draw (Microsoft.Xna.Framework.GameTime) [0x00000] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/MyCode/ChicksnVixens/ChicksnVixensGame.cs：414 在 Microsoft.Xna.Framework.Game.DoDraw (Microsoft.Xna.Framework.GameTime) [0x0001e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnCommon/Game/GameCommon.cs:205 在 Microsoft.Xna .Framework.ExEnEmTouchGameView.OnRenderFrame (OpenTK.FrameEventArgs) [0x0002e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnEmTouch/ExEnEmTouchGameView.cs:329 在 OpenTK.Platform.iPhoneOS.iPhoneOSGameView.RunIteration () [0x000af]在 /Users/plasma/Source/iphone/monotouch/OpenGLES/OpenTK/Platform/iPhoneOS/iPhoneOSGameView.cs:592 在 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] 在 /Users/plasma/Source/iphone/monotouch/ shared/Foundation/NSAction.cs:45 at (wrapper runtime-invoke) object.runtime_invoke_void_GameTime) [0x0001e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnCommon/Game/GameCommon.cs:205 在 Microsoft.Xna.Framework.ExEnEmTouchGameView.OnRenderFrame (OpenTK.FrameEventArgs) [0x0002e] 在 /Users/ ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnEmTouch/ExEnEmTouchGameView.cs:329 在 /Users/plasma/Source/iphone/monotouch/OpenGLES/OpenTK/Platform/ 中的 OpenTK.Platform.iPhoneOS.iPhoneOSGameView.RunIteration () [0x000af] iPhoneOS/iPhoneOSGameView.cs:592 在 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] 在 /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction.cs:45 在（包装运行时调用）对象。 runtime_invoke_void_GameTime) [0x0001e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnCommon/Game/GameCommon.cs:205 在 Microsoft.Xna.Framework.ExEnEmTouchGameView.OnRenderFrame (OpenTK.FrameEventArgs) [0x0002e] 在 /Users/ ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnEmTouch/ExEnEmTouchGameView.cs:329 在 /Users/plasma/Source/iphone/monotouch/OpenGLES/OpenTK/Platform/ 中的 OpenTK.Platform.iPhoneOS.iPhoneOSGameView.RunIteration () [0x000af] iPhoneOS/iPhoneOSGameView.cs:592 在 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] 在 /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction.cs:45 在（包装运行时调用）对象。 runtime_invoke_void_OnRenderFrame (OpenTK.FrameEventArgs) [0x0002e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnEmTouch/ExEnEmTouchGameView.cs:329 在 OpenTK.Platform.iPhoneOS.iPhoneOSGameView.RunIteration () [0x000af] 在 /Users/plasma /Source/iphone/monotouch/OpenGLES/OpenTK/Platform/iPhoneOS/iPhoneOSGameView.cs:592 在 /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction 中的 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] .cs:45 at (wrapper runtime-invoke) object.runtime_invoke_void_OnRenderFrame (OpenTK.FrameEventArgs) [0x0002e] 在 /Users/ahmedhakeem/Documents/Projects/JabberEngine2/ExEn/ExEnEmTouch/ExEnEmTouchGameView.cs:329 在 OpenTK.Platform.iPhoneOS.iPhoneOSGameView.RunIteration () [0x000af] 在 /Users/plasma /Source/iphone/monotouch/OpenGLES/OpenTK/Platform/iPhoneOS/iPhoneOSGameView.cs:592 在 /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction 中的 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] .cs:45 at (wrapper runtime-invoke) object.runtime_invoke_void_592 在 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] in /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction.cs:45 at (wrapper runtime-invoke) object.runtime_invoke_void_592 在 MonoTouch.Foundation.NSActionDispatcher.Apply () [0x00000] in /Users/plasma/Source/iphone/monotouch/shared/Foundation/NSAction.cs:45 at (wrapper runtime-invoke) object.runtime_invoke_void_这个_ (object,intptr,intptr,intptr) at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) 在 MonoTouch.UIKit.UIApplication.Main (string[] ,string,string) [0x00038] in /Users/plasma/Source/iphone/monotouch/UIKit/UIApplication.cs:26 at ChicksnVixens.Program.Main (string[]) [0x00000] in /Users/ahmedhakeem/Documents/Projects /JabberEngine2/MyCode/ChicksnVixens/MonoTouch Program.cs:24 at (wrapper runtime-invoke) .runtime_invoke_void_object (object,intptr,intptr,intptr)
本机堆栈跟踪：
0 aChicks
0x000c5d00 mono_handle_native_sigsegv + 343 1 aChicks 0x0000fce0 mono_sigsegv_signal_handler + 322 2 libSystem.B.dylib 0x95fee48b _sigtramp + 43 3 ???
0xffffffff 0x0 + 4294967295 4
GLEngine
0x08645753 gleLLVMArrayFunc + 67 5
GLEngine
0x0863cba2 gleDrawArraysOrElements_ExecCore + 856 6 GLEngine
0x08642bbe glDrawArrays_IMM_Exec + 332 7 OpenGL glES 0x0087c8 OpenGLDrawArrays
8 + OpenGLDrawArrays 0x0c3c9b34 0x0 + 205298484 9 ？？？
0x0c3c9a9c 0x0 + 205298332 10 ???
0x0f0956c8 0x0 + 252270280 11 ？？？
0x0f0939c4 0x0 + 252262852 12 ？？？
0x0f09397c 0x0 + 252262780 13 ？？？
0x0ecdb286 0x0 + 248361606 14 ？？？
0x0c3c709a 0x0 + 205287578 15 ???
0x0f0927c4 0x0 + 252258244 16 ???
0x0c3c44cd 0x0 + 205276365 17 ???
0x0c3c3fed 0x0 + 205275117 18 ???
0x0c3c3e9a 0x0 + 205274778 19 ???
0x0c3c3d73 0x0 + 205274483 20 ???
0x0cc03166 0x0 + 213922150 21 ？？？
0x0cbfd578 0x0 + 213898616 22 ???
0x0cbfd130 0x0 + 213897520 23 ？？？
0x05e861e8 0x0 + 99115496 24 aChicks 0x0000fa9b mono_jit_runtime_invoke + 1332 25 aChicks
0x001d9f01 mono_runtime_invoke + 137 26 aChicks
0x0027e52b monotouch_trampoline + 2527 27 基础
0x00619749 NSFireTimer + 125 28的CoreFoundation
0x014398c3 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION + 19 29的CoreFoundation 0x0143ae74 __CFRunLoopDoTimer + 1220 30的CoreFoundation
0x013972c9 __CFRunLoopRun + 1817 31的CoreFoundation
0x01396840 CFRunLoopRunSpecific + 208 32的CoreFoundation
0x01396761 CFRunLoopRunInMode + 97个33 GraphicsServices
0x028bc1c4 GSEventRunModal + 217个34 GraphicsServices
0x028bc289 GSEventRun + 115 35的UIKit 0x008abc93 UIApplicationMain + 1160 36 ???
0x05e84b8b 0x0 + 99109771 37 ？？？
0x05e83fb4 0x0 + 99106740 38 ???
0x05e83cee 0x0 + 99106030 39 ???
0x05e83e46为0x0 + 99106374 40 aChicks 0x0000fa9b mono_jit_runtime_invoke + 1332 41个aChicks
0x001d9f01 mono_runtime_invoke + 137 42 aChicks
0x001dc560 mono_runtime_exec_main + 669 43 aChicks
0x001db96e mono_runtime_run_main + 843个44 aChicks
0x0009cdd2 mono_jit_exec + 200个45 aChicks
0x00003362主+ 3838 46 aChicks
0x00002249 _start + 208个47 aChicks 0x00002178
开始+ 40来自 gdb 的调试信息：
/tmp/mono-gdb-commands.ZEI8zH:1：源命令文件中的错误：无法自我调试