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Bug 4239

Summary: GLES2: Get sin/cos out of vertex shader
Product: SDL Reporter: Andreas Müller <schnitzeltony>
Component: renderAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: HG 2.1   
Hardware: All   
OS: Linux   
Attachments: [PATCH] GLES2: Get sin/cos out of vertex shader

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