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Bug 4239 - GLES2: Get sin/cos out of vertex shader
Summary: GLES2: Get sin/cos out of vertex shader
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: render (show other bugs)
Version: HG 2.1
Hardware: All Linux
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-08-26 14:10 UTC by Andreas Müller
Modified: 2018-08-28 19:58 UTC (History)
0 users

See Also:

Attachments
[PATCH] GLES2: Get sin/cos out of vertex shader (6.16 KB, patch)
2018-08-26 14:10 UTC, Andreas Müller 		Details | Diff
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Description Andreas Müller 2018-08-26 14:10:30 UTC 
Created attachment 3289 [details]
[PATCH] GLES2: Get sin/cos out of vertex shader

Hi,

the patch attached should (more details in patch description)

* fix left rotated rendering on RaspberryPi with VC open source graphics driver
* give a tiny performance win for simple render operations
* might fix https://bugzilla.libsdl.org/show_bug.cgi?id=3192

One note: I am a total newbee when it comes to OpenGL / shaders so if this patch looks silly - feel free to let me know
Comment 1 Sam Lantinga 2018-08-28 19:58:20 UTC 
Added, thanks!
https://hg.libsdl.org/SDL/rev/e5a666405750