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| author |  ReinUsesLisp | 2019-05-23 20:27:54 -0300 |
|---|---|---|
| committer | ReinUsesLisp | 2019-05-24 02:47:56 -0300 |
| commit | d8827b07b5c823903609e00b8f0e1c27fa34fb91 (patch) | |
| tree | b170468a3bd2e56f367a999561ea0e6b705a2f81 /src/video_core/gpu_thread.cpp | |
| parent | gl_device: Add test to detect broken component indexing (diff) | |
| download | yuzu-d8827b07b5c823903609e00b8f0e1c27fa34fb91.tar.gz yuzu-d8827b07b5c823903609e00b8f0e1c27fa34fb91.tar.xz yuzu-d8827b07b5c823903609e00b8f0e1c27fa34fb91.zip | |
gl_shader_decompiler: Use an if based cbuf indexing for broken drivers
The following code is broken on AMD's proprietary GLSL compiler:
```glsl
uint idx = ...;
vec4 values = ...;
float some_value = values[idx & 3];
```
It index the wrong components, to fix this the following pessimized code
is emitted when that bug is present:
```glsl
uint idx = ...;
vec4 values = ...;
float some_value;
if ((idx & 3) == 0) some_value = values.x;
if ((idx & 3) == 1) some_value = values.y;
if ((idx & 3) == 2) some_value = values.z;
if ((idx & 3) == 3) some_value = values.w;
```
Diffstat (limited to 'src/video_core/gpu_thread.cpp')
0 files changed, 0 insertions, 0 deletions