diff options
Diffstat (limited to 'media/libstagefright/filters/saturationARGB.rs')
| -rw-r--r-- | media/libstagefright/filters/saturationARGB.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/media/libstagefright/filters/saturationARGB.rs b/media/libstagefright/filters/saturationARGB.rs index 20cfab9..1de9dd8 100644 --- a/media/libstagefright/filters/saturationARGB.rs +++ b/media/libstagefright/filters/saturationARGB.rs @@ -24,6 +24,8 @@ const static float3 gMonoMult = {0.299f, 0.587f, 0.114f}; float gSaturation = 1.0f; void root(const uchar4 *v_in, uchar4 *v_out) { + v_out->x = v_in->x; // don't modify A + // get RGB, scale 0-255 uchar to 0-1.0 float float3 rgb = {v_in->y * 0.003921569f, v_in->z * 0.003921569f, v_in->w * 0.003921569f}; @@ -32,7 +34,6 @@ void root(const uchar4 *v_in, uchar4 *v_out) { float3 result = dot(rgb, gMonoMult); result = mix(result, rgb, gSaturation); - v_out->x = v_in->x; // don't modify A v_out->y = (uchar)clamp((result.r * 255.f + 0.5f), 0.f, 255.f); v_out->z = (uchar)clamp((result.g * 255.f + 0.5f), 0.f, 255.f); v_out->w = (uchar)clamp((result.b * 255.f + 0.5f), 0.f, 255.f); |