diff options
Diffstat (limited to 'src/gallium/auxiliary/gallivm/lp_bld_format_soa.c')
-rw-r--r-- | src/gallium/auxiliary/gallivm/lp_bld_format_soa.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c new file mode 100644 index 0000000000..64151d169d --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c @@ -0,0 +1,149 @@ +/************************************************************************** + * + * 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); +} |