native_client_sdk/src/doc/devguide/coding/3D-graphics.rst - Issue 1144193005: Fix a lot of support links.

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Issue 1144193005: Fix a lot of support links. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: bug 490887 Created 5 years, 7 months ago

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1 .. _devguide-coding-3D-graphics:	1 .. _devguide-coding-3D-graphics:

2	2

3 ###########	3 ###########

4 3D Graphics	4 3D Graphics

5 ###########	5 ###########

6	6

7 Native Client applications use the `OpenGL ES 2.0	7 Native Client applications use the `OpenGL ES 2.0

8 <http://en.wikipedia.org/wiki/OpenGL_ES>`_ API for 3D rendering. This document	8 <http://en.wikipedia.org/wiki/OpenGL_ES>`_ API for 3D rendering. This document

9 describes how to call the OpenGL ES 2.0 interface in a Native Client module and	9 describes how to call the OpenGL ES 2.0 interface in a Native Client module and

10 how to build an efficient rendering loop. It also explains how to validate GPU	10 how to build an efficient rendering loop. It also explains how to validate GPU

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153	153

154 What to do when there are problems	154 What to do when there are problems

155 ----------------------------------	155 ----------------------------------

156	156

157 Using the vetting procedure described above, you should be able to detect the	157 Using the vetting procedure described above, you should be able to detect the

158 most common problems before your application runs. If there are problems, your	158 most common problems before your application runs. If there are problems, your

159 code should describe the issue as clearly as possible. That's easy if there is a	159 code should describe the issue as clearly as possible. That's easy if there is a

160 missing feature. Failure to create a graphics context is tougher to diagnose. At	160 missing feature. Failure to create a graphics context is tougher to diagnose. At

161 the very least, you can suggest that the user try to update the driver. You	161 the very least, you can suggest that the user try to update the driver. You

162 might want to linke to the Chrome page that describes `how to do updates	162 might want to linke to the Chrome page that describes `how to do updates

163 <http://support.google.com/chrome/bin/answer.py?hl=en&answer=1202946>`_.	163 <https://support.google.com/chrome/answer/1202946>`_.

164	164

165 If a user can't update the driver, or their problem persists, be sure to gather	165 If a user can't update the driver, or their problem persists, be sure to gather

166 information about their graphics environment. Ask for the contents of the Chrome	166 information about their graphics environment. Ask for the contents of the Chrome

167 ``about:gpu`` page.	167 ``about:gpu`` page.

168	168

169 Document unreliable drivers	169 Document unreliable drivers

170 ---------------------------	170 ---------------------------

171	171

172 It can be helpful to include information about known dubious drivers in your	172 It can be helpful to include information about known dubious drivers in your

173 user documentation. This might help identify if a rogue driver is the cause of a	173 user documentation. This might help identify if a rogue driver is the cause of a

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521 * Don't read data from the GPU. Don't call ``glReadPixels``, as it is slow.	521 * Don't read data from the GPU. Don't call ``glReadPixels``, as it is slow.

522	522

523 * Don't update a small portion of a large buffer. In the current OpenGL ES	523 * Don't update a small portion of a large buffer. In the current OpenGL ES

524 2.0 implementation when you update a portion of a buffer (with	524 2.0 implementation when you update a portion of a buffer (with

525 ``glSubBufferData`` for example) the entire buffer must be reprocessed. To	525 ``glSubBufferData`` for example) the entire buffer must be reprocessed. To

526 avoid this problem, keep static and dynamic data in different buffers.	526 avoid this problem, keep static and dynamic data in different buffers.

527	527

528 * Don't call glDisable(GL_TEXTURE_2D). This is an OpenGL ES 2.0	528 * Don't call glDisable(GL_TEXTURE_2D). This is an OpenGL ES 2.0

529 error. Each time it is called, an error messages will appear in Chrome's	529 error. Each time it is called, an error messages will appear in Chrome's

530 ``about:gpu`` tab.	530 ``about:gpu`` tab.

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