diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_format.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_format.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_format.c b/mesalib/src/gallium/auxiliary/util/u_format.c index 18456371c..9bdc2eabf 100644 --- a/mesalib/src/gallium/auxiliary/util/u_format.c +++ b/mesalib/src/gallium/auxiliary/util/u_format.c @@ -632,6 +632,40 @@ void util_format_compose_swizzles(const unsigned char swz1[4], } } +void util_format_apply_color_swizzle(union pipe_color_union *dst, + const union pipe_color_union *src, + const unsigned char swz[4], + const boolean is_integer) +{ + unsigned c; + + if (is_integer) { + for (c = 0; c < 4; ++c) { + switch (swz[c]) { + case PIPE_SWIZZLE_RED: dst->ui[c] = src->ui[0]; break; + case PIPE_SWIZZLE_GREEN: dst->ui[c] = src->ui[1]; break; + case PIPE_SWIZZLE_BLUE: dst->ui[c] = src->ui[2]; break; + case PIPE_SWIZZLE_ALPHA: dst->ui[c] = src->ui[3]; break; + default: + dst->ui[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1 : 0; + break; + } + } + } else { + for (c = 0; c < 4; ++c) { + switch (swz[c]) { + case PIPE_SWIZZLE_RED: dst->f[c] = src->f[0]; break; + case PIPE_SWIZZLE_GREEN: dst->f[c] = src->f[1]; break; + case PIPE_SWIZZLE_BLUE: dst->f[c] = src->f[2]; break; + case PIPE_SWIZZLE_ALPHA: dst->f[c] = src->f[3]; break; + default: + dst->f[c] = (swz[c] == PIPE_SWIZZLE_ONE) ? 1.0f : 0.0f; + break; + } + } + } +} + void util_format_swizzle_4f(float *dst, const float *src, const unsigned char swz[4]) { |