diff options
| author | Brian Paul <brianp@vmware.com> | 2010-11-04 09:31:56 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2010-11-04 09:31:59 -0600 |
| commit | ede232e9898698258391a280a098a7ba951b0099 (patch) | |
| tree | bf8c90da60ffd4816a34b1add62ce2a64f4481fb | |
| 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.
| -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 f36f3fcaf2..e15baa3727 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 */ |