diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 110 |
1 files changed, 105 insertions, 5 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c index 9f21e6d5e6..eb434ba7b8 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c @@ -144,6 +144,12 @@ struct lp_build_tgsi_soa_context */ LLVMValueRef temps_array; + /* We allocate/use this array of output if (1 << TGSI_FILE_OUTPUT) is + * set in the indirect_files field. + * The outputs[] array above is unused then. + */ + LLVMValueRef outputs_array; + const struct tgsi_shader_info *info; /** bitmask indicating which register files are accessed indirectly */ unsigned indirect_files; @@ -439,6 +445,28 @@ get_temp_ptr(struct lp_build_tgsi_soa_context *bld, } } +/** + * Return pointer to a output register channel (src or dest). + * Note that indirect addressing cannot be handled here. + * \param index which output register + * \param chan which channel of the output register. + */ +static LLVMValueRef +get_output_ptr(struct lp_build_tgsi_soa_context *bld, + unsigned index, + unsigned chan) +{ + assert(chan < 4); + if (bld->indirect_files & (1 << TGSI_FILE_OUTPUT)) { + LLVMValueRef lindex = lp_build_const_int32(index * 4 + chan); + return LLVMBuildGEP(bld->base.builder, bld->outputs_array, &lindex, 1, ""); + } + else { + return bld->outputs[index][chan]; + } +} + + /** * Gather vector. @@ -836,8 +864,45 @@ emit_store( switch( reg->Register.File ) { case TGSI_FILE_OUTPUT: - lp_exec_mask_store(&bld->exec_mask, pred, value, - bld->outputs[reg->Register.Index][chan_index]); + 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 outputs_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 + 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); + outputs_array = LLVMBuildBitCast(builder, bld->outputs_array, + float_ptr_type, ""); + + /* Scatter store values into temp registers */ + emit_mask_scatter(bld, outputs_array, index_vec, value, + &bld->exec_mask, pred); + } + else { + LLVMValueRef out_ptr = get_output_ptr(bld, reg->Register.Index, + chan_index); + lp_exec_mask_store(&bld->exec_mask, pred, value, out_ptr); + } break; case TGSI_FILE_TEMPORARY: @@ -1203,9 +1268,19 @@ emit_declaration( break; case TGSI_FILE_OUTPUT: - for (i = 0; i < NUM_CHANNELS; i++) - bld->outputs[idx][i] = lp_build_alloca(bld->base.builder, - vec_type, "output"); + if (bld->indirect_files & (1 << TGSI_FILE_OUTPUT)) { + /* ignore 'first' - we want to index into a 0-based array */ + LLVMValueRef array_size = LLVMConstInt(LLVMInt32Type(), + last*4 + 4, 0); + bld->outputs_array = lp_build_array_alloca(bld->base.builder, + vec_type, array_size, + "outputs_array"); + idx = last; + } else { + for (i = 0; i < NUM_CHANNELS; i++) + bld->outputs[idx][i] = lp_build_alloca(bld->base.builder, + vec_type, "output"); + } break; case TGSI_FILE_ADDRESS: @@ -2308,6 +2383,31 @@ lp_build_tgsi_soa(LLVMBuilderRef builder, opcode_info->mnemonic); } + /* If we have indirect addressing in outputs we need to copy our alloca array + * to the outputs slots specified by the called */ + if (bld.indirect_files & (1 << TGSI_FILE_OUTPUT)) { + tgsi_parse_init(&parse, tokens); + while( !tgsi_parse_end_of_tokens( &parse ) ) { + tgsi_parse_token( &parse ); + + switch( parse.FullToken.Token.Type ) { + case TGSI_TOKEN_TYPE_DECLARATION: { + const struct tgsi_full_declaration *decl = &parse.FullToken.FullDeclaration; + /* Inputs already interpolated */ + if (decl->Declaration.File == TGSI_FILE_OUTPUT) { + unsigned idx = decl->Range.Last; + const unsigned first = decl->Range.First; + const unsigned last = decl->Range.Last; + for (idx = first; idx <= last; ++idx) + for (i = 0; i < NUM_CHANNELS; i++) + bld.outputs[idx][i] = get_output_ptr(&bld, idx, i); + } + break; + } + } + } + } + if (0) { LLVMBasicBlockRef block = LLVMGetInsertBlock(builder); LLVMValueRef function = LLVMGetBasicBlockParent(block); |