| /************************************************************************** |
| * |
| * Copyright 2009 VMware, Inc. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sub license, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial portions |
| * of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| |
| #include "util/u_format.h" |
| |
| #include "lp_bld_type.h" |
| #include "lp_bld_const.h" |
| #include "lp_bld_conv.h" |
| #include "lp_bld_format.h" |
| |
| |
| static LLVMValueRef |
| lp_build_format_swizzle_chan_soa(struct lp_type type, |
| const LLVMValueRef *unswizzled, |
| enum util_format_swizzle swizzle) |
| { |
| switch (swizzle) { |
| case UTIL_FORMAT_SWIZZLE_X: |
| case UTIL_FORMAT_SWIZZLE_Y: |
| case UTIL_FORMAT_SWIZZLE_Z: |
| case UTIL_FORMAT_SWIZZLE_W: |
| return unswizzled[swizzle]; |
| case UTIL_FORMAT_SWIZZLE_0: |
| return lp_build_zero(type); |
| case UTIL_FORMAT_SWIZZLE_1: |
| return lp_build_one(type); |
| case UTIL_FORMAT_SWIZZLE_NONE: |
| return lp_build_undef(type); |
| default: |
| assert(0); |
| return lp_build_undef(type); |
| } |
| } |
| |
| |
| void |
| lp_build_format_swizzle_soa(const struct util_format_description *format_desc, |
| struct lp_type type, |
| const LLVMValueRef *unswizzled, |
| LLVMValueRef *swizzled) |
| { |
| if(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) { |
| enum util_format_swizzle swizzle = format_desc->swizzle[0]; |
| LLVMValueRef depth = lp_build_format_swizzle_chan_soa(type, unswizzled, swizzle); |
| swizzled[2] = swizzled[1] = swizzled[0] = depth; |
| swizzled[3] = lp_build_one(type); |
| } |
| else { |
| unsigned chan; |
| for (chan = 0; chan < 4; ++chan) { |
| enum util_format_swizzle swizzle = format_desc->swizzle[chan]; |
| swizzled[chan] = lp_build_format_swizzle_chan_soa(type, unswizzled, swizzle); |
| } |
| } |
| } |
| |
| |
| void |
| lp_build_unpack_rgba_soa(LLVMBuilderRef builder, |
| const struct util_format_description *format_desc, |
| struct lp_type type, |
| LLVMValueRef packed, |
| LLVMValueRef *rgba) |
| { |
| LLVMValueRef inputs[4]; |
| unsigned start; |
| unsigned chan; |
| |
| /* FIXME: Support more formats */ |
| assert(format_desc->layout == UTIL_FORMAT_LAYOUT_ARITH || |
| (format_desc->layout == UTIL_FORMAT_LAYOUT_ARRAY && |
| format_desc->block.bits == format_desc->channel[0].size)); |
| assert(format_desc->block.width == 1); |
| assert(format_desc->block.height == 1); |
| assert(format_desc->block.bits <= 32); |
| |
| /* Decode the input vector components */ |
| start = 0; |
| for (chan = 0; chan < 4; ++chan) { |
| unsigned width = format_desc->channel[chan].size; |
| unsigned stop = start + width; |
| LLVMValueRef input; |
| |
| input = packed; |
| |
| switch(format_desc->channel[chan].type) { |
| case UTIL_FORMAT_TYPE_VOID: |
| input = NULL; |
| break; |
| |
| case UTIL_FORMAT_TYPE_UNSIGNED: |
| if(type.floating) { |
| if(start) |
| input = LLVMBuildLShr(builder, input, lp_build_int_const_scalar(type, start), ""); |
| if(stop < format_desc->block.bits) { |
| unsigned mask = ((unsigned long long)1 << width) - 1; |
| input = LLVMBuildAnd(builder, input, lp_build_int_const_scalar(type, mask), ""); |
| } |
| |
| if(format_desc->channel[chan].normalized) |
| input = lp_build_unsigned_norm_to_float(builder, width, type, input); |
| else |
| input = LLVMBuildFPToSI(builder, input, lp_build_vec_type(type), ""); |
| } |
| else { |
| /* FIXME */ |
| assert(0); |
| input = lp_build_undef(type); |
| } |
| break; |
| |
| default: |
| /* fall through */ |
| input = lp_build_undef(type); |
| break; |
| } |
| |
| inputs[chan] = input; |
| |
| start = stop; |
| } |
| |
| lp_build_format_swizzle_soa(format_desc, type, inputs, rgba); |
| } |