diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 57 |
1 files changed, 34 insertions, 23 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c index 05f63526ee5..e0c39561939 100644 --- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c +++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c @@ -460,6 +460,38 @@ build_gather(struct lp_build_tgsi_soa_context *bld, /** + * Read the current value of the ADDR register, convert the floats to + * ints, multiply by four and return the vector of offsets. + * The offsets will be used to index into the constant buffer or + * temporary register file. + */ +static LLVMValueRef +get_indirect_offsets(struct lp_build_tgsi_soa_context *bld, + const struct tgsi_src_register *indirect_reg) +{ + /* always use X component of address register */ + const int x = indirect_reg->SwizzleX; + LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type); + uint swizzle = tgsi_util_get_src_register_swizzle(indirect_reg, x); + LLVMValueRef vec4 = lp_build_const_int_vec(bld->int_bld.type, 4); + LLVMValueRef addr_vec; + + addr_vec = LLVMBuildLoad(bld->base.builder, + bld->addr[indirect_reg->Index][swizzle], + "load addr reg"); + + /* for indexing we want integers */ + addr_vec = LLVMBuildFPToSI(bld->base.builder, addr_vec, + int_vec_type, ""); + + /* addr_vec = addr_vec * 4 */ + addr_vec = lp_build_mul(&bld->base, addr_vec, vec4); + + return addr_vec; +} + + +/** * Register fetch. */ static LLVMValueRef @@ -481,29 +513,7 @@ emit_fetch( } if (reg->Register.Indirect) { - /* - * Compute addr_vec: a vector of offsets into the register file - * from which we need to gather elements. Recall that the ADDR - * register's elements can all be different. - */ - - LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type); - unsigned swizzle = tgsi_util_get_src_register_swizzle( ®->Indirect, chan_index ); - - LLVMValueRef vec4 = lp_build_const_int_vec(bld->int_bld.type, 4); - - assert(bld->has_indirect_addressing); - - addr_vec = LLVMBuildLoad(bld->base.builder, - bld->addr[reg->Indirect.Index][swizzle], - "load addr"); - - /* for indexing we want integers */ - addr_vec = LLVMBuildFPToSI(bld->base.builder, addr_vec, - int_vec_type, ""); - - /* addr_vec = addr_vec * 4 */ - addr_vec = lp_build_mul(&bld->base, addr_vec, vec4); + addr_vec = get_indirect_offsets(bld, ®->Indirect); } switch (reg->Register.File) { @@ -741,6 +751,7 @@ emit_store( } if (reg->Register.Indirect) { + /* XXX use get_indirect_offsets() here eventually */ LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type); unsigned swizzle = tgsi_util_get_src_register_swizzle( ®->Indirect, chan_index ); addr = LLVMBuildLoad(bld->base.builder, |