blocks|key|3192573|text|GPU供应商提供了多个OpenGL+ES+1.1/2.0调试工具。几乎这些工具都需要真实的设备，但Imagination+Technologies提供了您使用的仿真库和跟踪工具。你在PVRVFrame中使用PVRTrace了吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3192574|3192575|PowerVR+(想象力技术)+|unordered-list-item|3192576|PVRVFrame是OpenGL+ES+1.1/2.0在OpenGL上的仿真库。|offset|length|3192577|PVRTrace还可以与|3192578|PVRTrace进行连接，实现与ARMv7+GL的连接|3192579|3192580|3192581|​|3192582|高通Adreno+(高通)+|3192583|Adreno+Profiler可以通过Adreno设备跟踪GL呼叫，例如带有Snapdragon的|3192584|。device.|3192585|WEBINAR:+OPTIMIZE+YOUR+APP+WITH+ADRENO+PROFILER|3192586|3192587|+One和多个设备。|3192588|它可以渲染在目标Nexus上执行的GL调用|3192589|3192590|3192591|3192592|Tegra+(NVIDIA)+|3192593|PerfHUD+ES具有帧调试器作为+profiler。它需要Tegra开发Kit.|3192594|3192595|3192596|3192597|3192598|马里(ARM)+|3192599|Mali+GPU+Performance+Analysis+Tool.它需要Mali设备。AFAIK，在moment.|3192600|3192601|的消费市场上没有马里设备|3192602|3192603|(我认为gDEBugger+5.7是调试OpenGL+ES+1.1/2.0的最佳工具。但它不再可用...)|3192604|entityMap|0|LINK|mutability|MUTABLE|url|http://www.imgtec.com/powervr/insider/powervr-vframe.asp|1|http://developer.qualcomm.com/showcase/adreno-profiler|2|http://developer.qualcomm.com/presentation-archive/webinar-optimize-your-app-adreno-profiler|3|http://developer.nvidia.com/tegra/perfhud-es|4|http://www.malideveloper.com/developer-resources/tools/performance-analysis-tool.php^0|0|0|1|0|9|0|1|1|1|0|0|0|0|0|F|1|1|1|0|1B|2|1|0|0|0|0|0|0|1|0|A|3|1|0|0|0|0|1|0|Y|4|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|25|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|26|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|27|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|28|8|@]|9|@$H|29|I|2A|1|2B]]|A|$]]|$1|J|3|K|5|E|7|2C|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|2D|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|2E|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|2F|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|2G|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|2H|8|@]|9|@]|A|$]]|$1|T|3|U|5|E|7|2I|8|@]|9|@$H|2J|I|2K|1|2L]]|A|$]]|$1|V|3|W|5|E|7|2M|8|@]|9|@]|A|$]]|$1|X|3|Y|5|E|7|2N|8|@]|9|@$H|2O|I|2P|1|2Q]]|A|$]]|$1|Z|3|-4|5|6|7|2R|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|2S|8|@]|9|@]|A|$]]|$1|12|3|13|5|E|7|2T|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|2U|8|@]|9|@]|A|$]]|$1|15|3|Q|5|6|7|2V|8|@]|9|@]|A|$]]|$1|16|3|-4|5|6|7|2W|8|@]|9|@]|A|$]]|$1|17|3|18|5|E|7|2X|8|@]|9|@]|A|$]]|$1|19|3|1A|5|E|7|2Y|8|@]|9|@$H|2Z|I|30|1|31]]|A|$]]|$1|1B|3|-4|5|6|7|32|8|@]|9|@]|A|$]]|$1|1C|3|-4|5|6|7|33|8|@]|9|@]|A|$]]|$1|1D|3|Q|5|6|7|34|8|@]|9|@]|A|$]]|$1|1E|3|-4|5|6|7|35|8|@]|9|@]|A|$]]|$1|1F|3|1G|5|E|7|36|8|@]|9|@]|A|$]]|$1|1H|3|1I|5|E|7|37|8|@]|9|@$H|38|I|39|1|3A]]|A|$]]|$1|1J|3|-4|5|6|7|3B|8|@]|9|@]|A|$]]|$1|1K|3|1L|5|6|7|3C|8|@]|9|@]|A|$]]|$1|1M|3|Q|5|6|7|3D|8|@]|9|@]|A|$]]|$1|1N|3|1O|5|6|7|3E|8|@]|9|@]|A|$]]|$1|1P|3|-4|5|6|7|3F|8|@]|9|@]|A|$]]]|1Q|$1R|$5|1S|1T|1U|A|$1V|1W]]|1X|$5|1S|1T|1U|A|$1V|1Y]]|1Z|$5|1S|1T|1U|A|$1V|20]]|21|$5|1S|1T|1U|A|$1V|22]]|23|$5|1S|1T|1U|A|$1V|24]]]]

There are several OpenGL ES 1.1/2.0 debugging tools from GPU vendors. Almost these tools require real device, but Imagination Technologies provides an emulation libraries and a tracing tool which you used. Did you use PVRTrace with PVRVFrame?

<ul>
<li>PowerVR (Imagination Technologies)

<ul>
<li><a href="http://www.imgtec.com/powervr/insider/powervr-vframe.asp" rel="noreferrer">PVRVFrame</a> is an emulation libraries for OpenGL ES 1.1/2.0 on OpenGL. And GL calls can be traced by <a href="http://www.imgtec.com/powervr/insider/pvrtrace.asp" rel="noreferrer">PVRTrace</a> with GUI.</li>
<li>PVRTrace can also connect with Linux ARMv7 devices.</li>
</ul></li>
<li>Adreno (Qualcomm)

<ul>
<li><a href="http://developer.qualcomm.com/showcase/adreno-profiler" rel="noreferrer">Adreno Profiler</a> can trace GL calls with Adreno devices, such as Android with Snapdragon. Nexus One and many devices.</li>
<li>It can render GL calls that are executed on the target device.</li>
<li><a href="http://developer.qualcomm.com/presentation-archive/webinar-optimize-your-app-adreno-profiler" rel="noreferrer">WEBINAR: OPTIMIZE YOUR APP WITH ADRENO PROFILER</a></li>
</ul></li>
<li>Tegra (NVIDIA)

<ul>
<li><a href="http://developer.nvidia.com/tegra/perfhud-es" rel="noreferrer">PerfHUD ES</a> has Frame Debugger as Adreno profiler. It require Tegra Development Kit.</li>
</ul></li>
<li>Mali (ARM)

<ul>
<li><a href="http://www.malideveloper.com/developer-resources/tools/performance-analysis-tool.php" rel="noreferrer">Mali GPU Performance Analysis Tool</a>. It require Mali device. AFAIK, there are no Mali devices in the consumer market at the moment.</li>
</ul></li>
</ul>

(I believe that gDEBugger 5.7 is the best tool for debugging OpenGL ES 1.1/2.0. But it is no longer available...)

blocks|key|3192642|text|我发现Windows5.7版仍然可以在这里下载：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3192643|http://files.gremedy.com/downloads/gDEBugger-5_7.msi|offset|length|3192644|我修改了下载页面顶部的URL+:+view-source:http://www.gremedy.com/downloading.php?platform=windows32|3192645|可以通过相同的技巧访问其他平台的相同版本。|3192646|这里提供了一个旧的许可证文件：http://www.geeks3d.com/20101207/3d-programming-gdebugger-advanced-opengl-debugger-now-free/|3192647|但它已于2011年1月31日到期。|3192648|entityMap|0|LINK|mutability|MUTABLE|url|1|http://www.gremedy.com/downloading.php?platform=windows32|2|http://www.geeks3d.com/20101207/3d-programming-gdebugger-advanced-opengl-debugger-now-free/^0|0|0|1G|0|0|T|1L|1|0|0|F|2J|2|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@$D|10|E|11|1|12]]|A|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@$D|14|E|15|1|16]]|A|$]]|$1|H|3|I|5|6|7|17|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|L|3|M|5|6|7|1C|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|C]]|U|$5|Q|R|S|A|$T|V]]|W|$5|Q|R|S|A|$T|X]]]]

I have found that gDebugger 5.7 for Windows IS still available here:

<a href="http://files.gremedy.com/downloads/gDEBugger-5_7.msi" rel="nofollow">http://files.gremedy.com/downloads/gDEBugger-5_7.msi</a>

I modified this URL from the one found at the top of this download page:
view-source:http://www.gremedy.com/downloading.php?platform=windows32

It may be possible to access the same version for other platforms via the same trick.

An old license file is available here:
<a href="http://www.geeks3d.com/20101207/3d-programming-gdebugger-advanced-opengl-debugger-now-free/" rel="nofollow">http://www.geeks3d.com/20101207/3d-programming-gdebugger-advanced-opengl-debugger-now-free/</a>

But it expired on Jan 31st, 2011.

blocks|key|274827|text|从4.2，c.f开始，在Xcode中就可以实现这个功能。https://developer.apple.com/library/ios/documentation/DeveloperTools/Conceptual/WhatsNewXcode/Articles/xcode_4_2.html#//apple_ref/doc/uid/00200-SW5|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|274828|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/ios/documentation/DeveloperTools/Conceptual/WhatsNewXcode/Articles/xcode_4_2.html#//apple_ref/doc/uid/00200-SW5^0|S|43|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

It's possible in Xcode since version 4.2, c.f.
<a href="https://developer.apple.com/library/ios/documentation/DeveloperTools/Conceptual/WhatsNewXcode/Articles/xcode_4_2.html#//apple_ref/doc/uid/00200-SW5" rel="nofollow">https://developer.apple.com/library/ios/documentation/DeveloperTools/Conceptual/WhatsNewXcode/Articles/xcode_4_2.html#//apple_ref/doc/uid/00200-SW5</a>

So, I have an OpenGL ES 2.0 app. It compiles and runs in the iPhone/iPad simulators, on a real iPhone/iPad, and under Windows using Imgtec's emulator libraries (i.e. PVRVframe).

In said app, I have one particular draw call that results in no pixels written to the target, even though all the state I can query looks sensible (viewport, depth test/stencil test/cull/blend off, framebuffer complete etc), and AFAICT I am submitting sensible vertex data. 

What I'm after at this point is a Pix / GPAD - like tool that will let me step through the scene and review state I cannot directly query from OpenGL at the point of the draw call in question (e.g. actual vertex/index buffer content).

Neither PVRTrace nor the OSX instruments appear to capture enough state for debugging this kind of problem. In particular, they do not capture vertex/index buffer or texture data (OSX instruments doesn't capture shader source either).

gDEBugger, previously the answer to this sort of question on Stack Overflow, is now at version 5.8 - it's gone free, which is nice, but no longer supports OpenGL ES 2 (under Windows, no ES2-renderable config is available through EGL; under OSX, there is no way to attach the debugger to an app running either in the simulator or on the real device) - which is not as nice.

Am I missing something obvious? What are my options? How do others debug their scenes?

OpenGL ES 2.0 debugging

调试器

Windows

Xcode

因此，我有一个OpenGL ES 2.0应用程序。它使用Imgtec的模拟器库(即PVRVframe)在iPhone/iPad模拟器、真正的iPhone/iPad和Windows下编译和运行。在上述应用程序中，我有一个特殊的绘图调用，它不会导致任何像素写入目标，即使我可以查询的所有状态看起来都是合理的(视口、深度测试/...

问OpenGL ES 2.0调试
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