José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 1 | /************************************************************************** |
| 2 | * |
| 3 | * Copyright 2009 VMware, Inc. |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
| 12 | * the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial portions |
| 16 | * of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
| 21 | * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 25 | * |
| 26 | **************************************************************************/ |
| 27 | |
| 28 | |
| 29 | #include "util/u_format.h" |
| 30 | |
| 31 | #include "lp_bld_type.h" |
| 32 | #include "lp_bld_const.h" |
| 33 | #include "lp_bld_conv.h" |
| 34 | #include "lp_bld_format.h" |
| 35 | |
| 36 | |
José Fonseca | 48f19c0 | 2009-09-10 12:14:53 +0100 | [diff] [blame] | 37 | static LLVMValueRef |
José Fonseca | abff421 | 2009-10-25 09:06:05 +0000 | [diff] [blame] | 38 | lp_build_format_swizzle_chan_soa(struct lp_type type, |
| 39 | const LLVMValueRef *unswizzled, |
| 40 | enum util_format_swizzle swizzle) |
José Fonseca | 48f19c0 | 2009-09-10 12:14:53 +0100 | [diff] [blame] | 41 | { |
| 42 | switch (swizzle) { |
| 43 | case UTIL_FORMAT_SWIZZLE_X: |
| 44 | case UTIL_FORMAT_SWIZZLE_Y: |
| 45 | case UTIL_FORMAT_SWIZZLE_Z: |
| 46 | case UTIL_FORMAT_SWIZZLE_W: |
José Fonseca | abff421 | 2009-10-25 09:06:05 +0000 | [diff] [blame] | 47 | return unswizzled[swizzle]; |
José Fonseca | 48f19c0 | 2009-09-10 12:14:53 +0100 | [diff] [blame] | 48 | case UTIL_FORMAT_SWIZZLE_0: |
| 49 | return lp_build_zero(type); |
| 50 | case UTIL_FORMAT_SWIZZLE_1: |
| 51 | return lp_build_one(type); |
| 52 | case UTIL_FORMAT_SWIZZLE_NONE: |
| 53 | return lp_build_undef(type); |
| 54 | default: |
| 55 | assert(0); |
| 56 | return lp_build_undef(type); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 61 | void |
José Fonseca | abff421 | 2009-10-25 09:06:05 +0000 | [diff] [blame] | 62 | lp_build_format_swizzle_soa(const struct util_format_description *format_desc, |
| 63 | struct lp_type type, |
| 64 | const LLVMValueRef *unswizzled, |
| 65 | LLVMValueRef *swizzled) |
| 66 | { |
| 67 | if(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) { |
| 68 | enum util_format_swizzle swizzle = format_desc->swizzle[0]; |
| 69 | LLVMValueRef depth = lp_build_format_swizzle_chan_soa(type, unswizzled, swizzle); |
| 70 | swizzled[2] = swizzled[1] = swizzled[0] = depth; |
| 71 | swizzled[3] = lp_build_one(type); |
| 72 | } |
| 73 | else { |
| 74 | unsigned chan; |
| 75 | for (chan = 0; chan < 4; ++chan) { |
| 76 | enum util_format_swizzle swizzle = format_desc->swizzle[chan]; |
| 77 | swizzled[chan] = lp_build_format_swizzle_chan_soa(type, unswizzled, swizzle); |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | |
| 83 | void |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 84 | lp_build_unpack_rgba_soa(LLVMBuilderRef builder, |
| 85 | const struct util_format_description *format_desc, |
José Fonseca | b4835ea | 2009-09-14 11:05:06 +0100 | [diff] [blame] | 86 | struct lp_type type, |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 87 | LLVMValueRef packed, |
| 88 | LLVMValueRef *rgba) |
| 89 | { |
| 90 | LLVMValueRef inputs[4]; |
| 91 | unsigned start; |
| 92 | unsigned chan; |
| 93 | |
| 94 | /* FIXME: Support more formats */ |
José Fonseca | cd0a396 | 2009-10-03 22:15:17 +0100 | [diff] [blame] | 95 | assert(format_desc->layout == UTIL_FORMAT_LAYOUT_ARITH || |
| 96 | (format_desc->layout == UTIL_FORMAT_LAYOUT_ARRAY && |
| 97 | format_desc->block.bits == format_desc->channel[0].size)); |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 98 | assert(format_desc->block.width == 1); |
| 99 | assert(format_desc->block.height == 1); |
| 100 | assert(format_desc->block.bits <= 32); |
| 101 | |
| 102 | /* Decode the input vector components */ |
| 103 | start = 0; |
| 104 | for (chan = 0; chan < 4; ++chan) { |
| 105 | unsigned width = format_desc->channel[chan].size; |
| 106 | unsigned stop = start + width; |
| 107 | LLVMValueRef input; |
| 108 | |
| 109 | input = packed; |
| 110 | |
| 111 | switch(format_desc->channel[chan].type) { |
| 112 | case UTIL_FORMAT_TYPE_VOID: |
| 113 | input = NULL; |
| 114 | break; |
| 115 | |
| 116 | case UTIL_FORMAT_TYPE_UNSIGNED: |
| 117 | if(type.floating) { |
| 118 | if(start) |
| 119 | input = LLVMBuildLShr(builder, input, lp_build_int_const_scalar(type, start), ""); |
| 120 | if(stop < format_desc->block.bits) { |
| 121 | unsigned mask = ((unsigned long long)1 << width) - 1; |
| 122 | input = LLVMBuildAnd(builder, input, lp_build_int_const_scalar(type, mask), ""); |
| 123 | } |
| 124 | |
| 125 | if(format_desc->channel[chan].normalized) |
| 126 | input = lp_build_unsigned_norm_to_float(builder, width, type, input); |
| 127 | else |
| 128 | input = LLVMBuildFPToSI(builder, input, lp_build_vec_type(type), ""); |
| 129 | } |
| 130 | else { |
| 131 | /* FIXME */ |
| 132 | assert(0); |
| 133 | input = lp_build_undef(type); |
| 134 | } |
| 135 | break; |
| 136 | |
| 137 | default: |
| 138 | /* fall through */ |
| 139 | input = lp_build_undef(type); |
| 140 | break; |
| 141 | } |
| 142 | |
| 143 | inputs[chan] = input; |
| 144 | |
| 145 | start = stop; |
| 146 | } |
| 147 | |
José Fonseca | abff421 | 2009-10-25 09:06:05 +0000 | [diff] [blame] | 148 | lp_build_format_swizzle_soa(format_desc, type, inputs, rgba); |
José Fonseca | 866fbac | 2009-09-07 14:24:31 +0100 | [diff] [blame] | 149 | } |