| commit | 9aa83a93a06e1cf09547716d92f3ca82010dcf43 | [log] [tgz] |
|---|---|---|
| author | Alexis Hetu <sugoi@google.com> | Mon May 02 17:34:46 2016 -0400 |
| committer | Alexis Hétu <sugoi@google.com> | Mon May 16 16:30:57 2016 +0000 |
| tree | 2d6a2439c18d03642f761bdb9a21fd8f4d441074 | |
| parent | 70085ba50becdb3b19b84e54383725e5cfeab17c [diff] |
Switch implementation
Implemented switch/case for glsl in OpenGL ES 3.0.
For simplicity, it is implemented as a loop without a condition,
so break statements work properly like so:
begin switch
if(...) // 1st case
...
else if(...) // other cases
...
else // default case
...
end switch // Anchor point for break statements
All related dEQP tests pass, except 7 tests where vertex shaders
contain a switch or a loop within another switch. These 7 failures
have only about 5% of bad pixel and seem to be related to an issue
with int(floor(...)), since the equivalent tests inside the fragment
shader pass.
KNOWN ISSUE: If a switch is within a loop and one of the cases
contains a "continue" statement, this will not be
handled correctly at the moment. There are no dEQP
tests for this at the moment, AFAIK.
Change-Id: I3ba34ab06a759d07e8520f6a87d75036a5cdaef5
Reviewed-on: https://swiftshader-review.googlesource.com/5272
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>
SwiftShader is a high-performance CPU-based implementation of the OpenGL ES and Direct3D 9 graphics APIs12. Its goal is to provide hardware independence for advanced 3D graphics.
The SwiftShader libraries act as drop-in replacements for graphics drivers.
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See CONTRIBUTING.txt for important contributing requirements.
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