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author | José Fonseca <jfonseca@vmware.com> | 2009-08-17 07:57:28 +0100 |
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committer | José Fonseca <jfonseca@vmware.com> | 2009-08-29 09:21:33 +0100 |
commit | 09a7b011acb3957725bb7e1bc4125f0939a295e7 (patch) | |
tree | a64d1f702d45589a9406c23cdd4135c8013bdf5f /src/gallium/drivers/llvmpipe/lp_bld_swizzle.c | |
parent | 1aae039ee279f8ad300919d8af0fc4691ca2f514 (diff) | |
download | external_mesa3d-09a7b011acb3957725bb7e1bc4125f0939a295e7.zip external_mesa3d-09a7b011acb3957725bb7e1bc4125f0939a295e7.tar.gz external_mesa3d-09a7b011acb3957725bb7e1bc4125f0939a295e7.tar.bz2 |
llvmpipe: Move lp_build_select to lp_bld_logic.[ch].
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_bld_swizzle.c')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_swizzle.c | 103 |
1 files changed, 1 insertions, 102 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c index 185df4a..3402d4f 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_swizzle.c @@ -30,6 +30,7 @@ #include "lp_bld_type.h" #include "lp_bld_const.h" +#include "lp_bld_logic.h" #include "lp_bld_swizzle.h" @@ -132,108 +133,6 @@ lp_build_broadcast_aos(struct lp_build_context *bld, LLVMValueRef -lp_build_select(struct lp_build_context *bld, - LLVMValueRef mask, - LLVMValueRef a, - LLVMValueRef b) -{ - union lp_type type = bld->type; - LLVMValueRef res; - - if(a == b) - return a; - - if(type.floating) { - LLVMTypeRef int_vec_type = lp_build_int_vec_type(type); - a = LLVMBuildBitCast(bld->builder, a, int_vec_type, ""); - b = LLVMBuildBitCast(bld->builder, b, int_vec_type, ""); - } - - /* TODO: On SSE4 we could do this with a single instruction -- PBLENDVB */ - - a = LLVMBuildAnd(bld->builder, a, mask, ""); - - /* This often gets translated to PANDN, but sometimes the NOT is - * pre-computed and stored in another constant. The best strategy depends - * on available registers, so it is not a big deal -- hopefully LLVM does - * the right decision attending the rest of the program. - */ - b = LLVMBuildAnd(bld->builder, b, LLVMBuildNot(bld->builder, mask, ""), ""); - - res = LLVMBuildOr(bld->builder, a, b, ""); - - if(type.floating) { - LLVMTypeRef vec_type = lp_build_vec_type(type); - res = LLVMBuildBitCast(bld->builder, res, vec_type, ""); - } - - return res; -} - - -LLVMValueRef -lp_build_select_aos(struct lp_build_context *bld, - LLVMValueRef a, - LLVMValueRef b, - boolean cond[4]) -{ - const union lp_type type = bld->type; - const unsigned n = type.length; - unsigned i, j; - - if(a == b) - return a; - if(cond[0] && cond[1] && cond[2] && cond[3]) - return a; - if(!cond[0] && !cond[1] && !cond[2] && !cond[3]) - return b; - if(a == bld->undef || b == bld->undef) - return bld->undef; - - /* - * There are three major ways of accomplishing this: - * - with a shuffle, - * - with a select, - * - or with a bit mask. - * - * Select isn't supported for vector types yet. - * The flip between these is empirical and might need to be. - */ - if (n <= 4) { - /* - * Shuffle. - */ - LLVMTypeRef elem_type = LLVMInt32Type(); - LLVMValueRef shuffles[LP_MAX_VECTOR_LENGTH]; - - for(j = 0; j < n; j += 4) - for(i = 0; i < 4; ++i) - shuffles[j + i] = LLVMConstInt(elem_type, (cond[i] ? 0 : n) + j + i, 0); - - return LLVMBuildShuffleVector(bld->builder, a, b, LLVMConstVector(shuffles, n), ""); - } -#if 0 - else if(0) { - /* FIXME: Unfortunately select of vectors do not work */ - /* Use a select */ - LLVMTypeRef elem_type = LLVMInt1Type(); - LLVMValueRef cond[LP_MAX_VECTOR_LENGTH]; - - for(j = 0; j < n; j += 4) - for(i = 0; i < 4; ++i) - cond[j + i] = LLVMConstInt(elem_type, cond[i] ? 1 : 0, 0); - - return LLVMBuildSelect(bld->builder, LLVMConstVector(cond, n), a, b, ""); - } -#endif - else { - LLVMValueRef mask = lp_build_const_mask_aos(type, cond); - return lp_build_select(bld, mask, a, b); - } -} - - -LLVMValueRef lp_build_swizzle1_aos(struct lp_build_context *bld, LLVMValueRef a, unsigned char swizzle[4]) |