diff options
| author | Brian Paul <[email protected]> | 2010-11-04 09:31:56 -0600 |
|---|---|---|
| committer | Brian Paul <[email protected]> | 2010-11-04 09:31:59 -0600 |
| commit | ede232e9898698258391a280a098a7ba951b0099 (patch) | |
| tree | bf8c90da60ffd4816a34b1add62ce2a64f4481fb /src/gallium/auxiliary/gallivm | |
| parent | 5b294a5d17c818ecbb1295fdd20825da9b106792 (diff) | |
gallivm: add pixel offsets in scatter stores
We want to do the scatter store to sequential locations in memory
for the vector of pixels we're processing in SOA format.
Diffstat (limited to 'src/gallium/auxiliary/gallivm')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c index f36f3fcaf21..e15baa3727c 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c @@ -489,6 +489,10 @@ build_scatter(struct lp_build_tgsi_soa_context *bld, LLVMValueRef scalar_ptr = LLVMBuildGEP(builder, base_ptr, &index, 1, "scatter_ptr"); LLVMValueRef val = LLVMBuildExtractElement(builder, values, ii, "scatter_val"); + if (0) + lp_build_printf(builder, "scatter %d: val %f at %d %p\n", + ii, val, index, scalar_ptr); + LLVMBuildStore(builder, val, scalar_ptr); } } @@ -813,21 +817,33 @@ emit_store( case TGSI_FILE_TEMPORARY: if (reg->Register.Indirect) { + LLVMBuilderRef builder = bld->base.builder; LLVMValueRef chan_vec = lp_build_const_int_vec(uint_bld->type, chan_index); LLVMValueRef length_vec = lp_build_const_int_vec(uint_bld->type, bld->base.type.length); LLVMValueRef index_vec; /* indexes into the temp registers */ LLVMValueRef temps_array; + LLVMValueRef pixel_offsets; LLVMTypeRef float_ptr_type; + int i; + + /* build pixel offset vector: {0, 1, 2, 3, ...} */ + pixel_offsets = uint_bld->undef; + for (i = 0; i < bld->base.type.length; i++) { + LLVMValueRef ii = lp_build_const_int32(i); + pixel_offsets = LLVMBuildInsertElement(builder, pixel_offsets, + ii, ii, ""); + } - /* index_vec = (indirect_index * 4 + chan_index) * length */ + /* index_vec = (indirect_index * 4 + chan_index) * length + offsets */ index_vec = lp_build_shl_imm(uint_bld, indirect_index, 2); index_vec = lp_build_add(uint_bld, index_vec, chan_vec); index_vec = lp_build_mul(uint_bld, index_vec, length_vec); + index_vec = lp_build_add(uint_bld, index_vec, pixel_offsets); float_ptr_type = LLVMPointerType(LLVMFloatType(), 0); - temps_array = LLVMBuildBitCast(bld->base.builder, bld->temps_array, + temps_array = LLVMBuildBitCast(builder, bld->temps_array, float_ptr_type, ""); /* Scatter store values into temp registers */ |