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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2012-11-22 13:48:45 -0600 |
|---|---|---|
| committer | José Fonseca <jfonseca@vmware.com> | 2012-11-29 11:54:18 +0000 |
| commit | e25abacc1883f1b2e09c32230e35ffae7df5e61b (patch) | |
| tree | 6afc27a9233c351b69d378f88e6da1952d785779 /src/gallium/auxiliary/gallivm/lp_bld_swizzle.c | |
| parent | b772d784b25771ff939e3c0c87fdf0d8053827be (diff) | |
| download | external_mesa3d-e25abacc1883f1b2e09c32230e35ffae7df5e61b.zip external_mesa3d-e25abacc1883f1b2e09c32230e35ffae7df5e61b.tar.gz external_mesa3d-e25abacc1883f1b2e09c32230e35ffae7df5e61b.tar.bz2 | |
gallivm: Fix format manipulation for big-endian
This patch fixes various format manipulation for big-endian
architectures.
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_swizzle.c')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_swizzle.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_swizzle.c b/src/gallium/auxiliary/gallivm/lp_bld_swizzle.c index ae4033b..08d817a 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_swizzle.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_swizzle.c @@ -431,10 +431,16 @@ lp_build_swizzle_aos(struct lp_build_context *bld, * * For example, this will convert BGRA to RGBA by doing * + * Little endian: * rgba = (bgra & 0x00ff0000) >> 16 * | (bgra & 0xff00ff00) * | (bgra & 0x000000ff) << 16 * + * Big endian:A + * rgba = (bgra & 0x0000ff00) << 16 + * | (bgra & 0x00ff00ff) + * | (bgra & 0xff000000) >> 16 + * * This is necessary not only for faster cause, but because X86 backend * will refuse shuffles of <4 x i8> vectors */ @@ -479,7 +485,11 @@ lp_build_swizzle_aos(struct lp_build_context *bld, /* FIXME: big endian */ if (swizzles[chan] < 4 && chan - swizzles[chan] == shift) { +#ifdef PIPE_ARCH_LITTLE_ENDIAN mask |= ((1ULL << type.width) - 1) << (swizzles[chan] * type.width); +#else + mask |= ((1ULL << type.width) - 1) << (type4.width - type.width) >> (swizzles[chan] * type.width); +#endif } } @@ -492,11 +502,21 @@ lp_build_swizzle_aos(struct lp_build_context *bld, masked = LLVMBuildAnd(builder, a, lp_build_const_int_vec(bld->gallivm, type4, mask), ""); if (shift > 0) { +#ifdef PIPE_ARCH_LITTLE_ENDIAN shifted = LLVMBuildShl(builder, masked, lp_build_const_int_vec(bld->gallivm, type4, shift*type.width), ""); +#else + shifted = LLVMBuildLShr(builder, masked, + lp_build_const_int_vec(bld->gallivm, type4, shift*type.width), ""); +#endif } else if (shift < 0) { +#ifdef PIPE_ARCH_LITTLE_ENDIAN shifted = LLVMBuildLShr(builder, masked, lp_build_const_int_vec(bld->gallivm, type4, -shift*type.width), ""); +#else + shifted = LLVMBuildShl(builder, masked, + lp_build_const_int_vec(bld->gallivm, type4, -shift*type.width), ""); +#endif } else { shifted = masked; } |