diff options
author | Brian Paul <brianp@vmware.com> | 2010-03-09 09:37:50 -0700 |
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committer | Brian Paul <brianp@vmware.com> | 2010-03-09 09:40:41 -0700 |
commit | 2ccae040a458ad0f95ee46916e2ea467d5cf9d02 (patch) | |
tree | 176d693ba858c88cec6148915377a24b520f049e /src/gallium/auxiliary/gallivm/lp_bld_logic.c | |
parent | e0f10a6fca34619f61c3533b68d89dcb1ff2627c (diff) |
gallivm: checkpoint: nearest mipmap filtering
The LOD is computed from texcoord partial derivatives and used to
select a mipmap level. Still some bugs in texel fetching. Lots of
rough edges and unfinished parts but the basics are in place.
Lots of changes to the lp_bld_arit.c code to support non-vector/scalar
datatypes.
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_logic.c')
-rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_logic.c | 100 |
1 files changed, 58 insertions, 42 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_logic.c b/src/gallium/auxiliary/gallivm/lp_bld_logic.c index 2726747eae..7c585fda78 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_logic.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_logic.c @@ -198,7 +198,7 @@ lp_build_compare(LLVMBuilderRef builder, return res; } - } + } /* if (type.width * type.length == 128) */ #endif if(type.floating) { @@ -238,20 +238,25 @@ lp_build_compare(LLVMBuilderRef builder, cond = LLVMBuildFCmp(builder, op, a, b, ""); res = LLVMBuildSelect(builder, cond, ones, zeros, ""); #else - debug_printf("%s: warning: using slow element-wise vector comparison\n", - __FUNCTION__); res = LLVMGetUndef(int_vec_type); - for(i = 0; i < type.length; ++i) { - LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); - cond = LLVMBuildFCmp(builder, op, - LLVMBuildExtractElement(builder, a, index, ""), - LLVMBuildExtractElement(builder, b, index, ""), - ""); - cond = LLVMBuildSelect(builder, cond, - LLVMConstExtractElement(ones, index), - LLVMConstExtractElement(zeros, index), - ""); - res = LLVMBuildInsertElement(builder, res, cond, index, ""); + if (type.length == 1) { + res = LLVMBuildFCmp(builder, op, a, b, ""); + } + else { + debug_printf("%s: warning: using slow element-wise float" + " vector comparison\n", __FUNCTION__); + for (i = 0; i < type.length; ++i) { + LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); + cond = LLVMBuildFCmp(builder, op, + LLVMBuildExtractElement(builder, a, index, ""), + LLVMBuildExtractElement(builder, b, index, ""), + ""); + cond = LLVMBuildSelect(builder, cond, + LLVMConstExtractElement(ones, index), + LLVMConstExtractElement(zeros, index), + ""); + res = LLVMBuildInsertElement(builder, res, cond, index, ""); + } } #endif } @@ -286,20 +291,26 @@ lp_build_compare(LLVMBuilderRef builder, cond = LLVMBuildICmp(builder, op, a, b, ""); res = LLVMBuildSelect(builder, cond, ones, zeros, ""); #else - debug_printf("%s: warning: using slow element-wise int vector comparison\n", - __FUNCTION__); res = LLVMGetUndef(int_vec_type); - for(i = 0; i < type.length; ++i) { - LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); - cond = LLVMBuildICmp(builder, op, - LLVMBuildExtractElement(builder, a, index, ""), - LLVMBuildExtractElement(builder, b, index, ""), - ""); - cond = LLVMBuildSelect(builder, cond, - LLVMConstExtractElement(ones, index), - LLVMConstExtractElement(zeros, index), - ""); - res = LLVMBuildInsertElement(builder, res, cond, index, ""); + if (type.length == 1) { + res = LLVMBuildICmp(builder, op, a, b, ""); + } + else { + debug_printf("%s: warning: using slow element-wise int" + " vector comparison\n", __FUNCTION__); + + for(i = 0; i < type.length; ++i) { + LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); + cond = LLVMBuildICmp(builder, op, + LLVMBuildExtractElement(builder, a, index, ""), + LLVMBuildExtractElement(builder, b, index, ""), + ""); + cond = LLVMBuildSelect(builder, cond, + LLVMConstExtractElement(ones, index), + LLVMConstExtractElement(zeros, index), + ""); + res = LLVMBuildInsertElement(builder, res, cond, index, ""); + } } #endif } @@ -339,26 +350,31 @@ lp_build_select(struct lp_build_context *bld, 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, ""); + if (type.length == 1) { + res = LLVMBuildSelect(bld->builder, mask, a, b, ""); } + else { + 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, ""); + } - a = LLVMBuildAnd(bld->builder, a, mask, ""); + 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, ""), ""); + /* 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, ""); + res = LLVMBuildOr(bld->builder, a, b, ""); - if(type.floating) { - LLVMTypeRef vec_type = lp_build_vec_type(type); - res = LLVMBuildBitCast(bld->builder, res, vec_type, ""); + if(type.floating) { + LLVMTypeRef vec_type = lp_build_vec_type(type); + res = LLVMBuildBitCast(bld->builder, res, vec_type, ""); + } } return res; |