Ryujinx/Ryujinx.Graphics.Shader/CodeGen/Glsl/HelperFunctions/SwizzleAdd.glsl
gdkchan 8428bb6541
Fix shader FSWZADD instruction (#4069)
* Fix shader FSWZADD instruction

* Shader cache version bump
2022-12-08 14:08:07 -03:00

7 lines
No EOL
259 B
GLSL

float Helper_SwizzleAdd(float x, float y, int mask)
{
vec4 xLut = vec4(1.0, -1.0, 1.0, 0.0);
vec4 yLut = vec4(1.0, 1.0, -1.0, 1.0);
int lutIdx = (mask >> (int($SUBGROUP_INVOCATION$ & 3u) * 2)) & 3;
return x * xLut[lutIdx] + y * yLut[lutIdx];
}