From: José Fonseca Date: Sun, 23 Aug 2009 13:25:31 +0000 (+0100) Subject: llvmpipe: Merge all pixel format related files. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f311bacebd167651e5be3bb3cef14fdfb6e1d925;p=mesa.git llvmpipe: Merge all pixel format related files. --- diff --git a/src/gallium/drivers/llvmpipe/Makefile b/src/gallium/drivers/llvmpipe/Makefile index 4f31788e755..0179a0bb26a 100644 --- a/src/gallium/drivers/llvmpipe/Makefile +++ b/src/gallium/drivers/llvmpipe/Makefile @@ -14,12 +14,9 @@ C_SOURCES = \ lp_bld_debug.c \ lp_bld_depth.c \ lp_bld_flow.c \ + lp_bld_format.c \ lp_bld_interp.c \ lp_bld_intr.c \ - lp_bld_pack.c \ - lp_bld_unpack.c \ - lp_bld_load.c \ - lp_bld_store.c \ lp_bld_logic.c \ lp_bld_swizzle.c \ lp_bld_struct.c \ diff --git a/src/gallium/drivers/llvmpipe/SConscript b/src/gallium/drivers/llvmpipe/SConscript index ec82be14c8a..218d0387dfc 100644 --- a/src/gallium/drivers/llvmpipe/SConscript +++ b/src/gallium/drivers/llvmpipe/SConscript @@ -18,12 +18,9 @@ llvmpipe = env.ConvenienceLibrary( 'lp_bld_debug.c', 'lp_bld_depth.c', 'lp_bld_flow.c', + 'lp_bld_format.c', 'lp_bld_interp.c', 'lp_bld_intr.c', - 'lp_bld_pack.c', - 'lp_bld_unpack.c', - 'lp_bld_load.c', - 'lp_bld_store.c', 'lp_bld_struct.c', 'lp_bld_logic.c', 'lp_bld_swizzle.c', diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c new file mode 100644 index 00000000000..dcbc0076c7d --- /dev/null +++ b/src/gallium/drivers/llvmpipe/lp_bld_format_aos.c @@ -0,0 +1,303 @@ +/************************************************************************** + * + * 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_format.h" + + +LLVMValueRef +lp_build_unpack_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef packed) +{ + const struct util_format_description *desc; + LLVMTypeRef type; + LLVMValueRef shifted, casted, scaled, masked; + LLVMValueRef shifts[4]; + LLVMValueRef masks[4]; + LLVMValueRef scales[4]; + LLVMValueRef swizzles[4]; + LLVMValueRef aux[4]; + bool normalized; + int empty_channel; + unsigned shift; + unsigned i; + + desc = util_format_description(format); + + /* FIXME: Support more formats */ + assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); + assert(desc->block.width == 1); + assert(desc->block.height == 1); + assert(desc->block.bits <= 32); + + type = LLVMIntType(desc->block.bits); + + /* Do the intermediate integer computations with 32bit integers since it + * matches floating point size */ + if (desc->block.bits < 32) + packed = LLVMBuildZExt(builder, packed, LLVMInt32Type(), ""); + + /* Broadcast the packed value to all four channels */ + packed = LLVMBuildInsertElement(builder, + LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), + packed, + LLVMConstNull(LLVMInt32Type()), + ""); + packed = LLVMBuildShuffleVector(builder, + packed, + LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), + LLVMConstNull(LLVMVectorType(LLVMInt32Type(), 4)), + ""); + + /* Initialize vector constants */ + normalized = FALSE; + empty_channel = -1; + shift = 0; + for (i = 0; i < 4; ++i) { + unsigned bits = desc->channel[i].size; + + if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { + shifts[i] = LLVMGetUndef(LLVMInt32Type()); + masks[i] = LLVMConstNull(LLVMInt32Type()); + scales[i] = LLVMConstNull(LLVMFloatType()); + empty_channel = i; + } + else { + unsigned mask = (1 << bits) - 1; + + assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); + assert(bits < 32); + + shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); + masks[i] = LLVMConstInt(LLVMInt32Type(), mask, 0); + + if (desc->channel[i].normalized) { + scales[i] = LLVMConstReal(LLVMFloatType(), 1.0/mask); + normalized = TRUE; + } + else + scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); + } + + shift += bits; + } + + shifted = LLVMBuildLShr(builder, packed, LLVMConstVector(shifts, 4), ""); + masked = LLVMBuildAnd(builder, shifted, LLVMConstVector(masks, 4), ""); + // UIToFP can't be expressed in SSE2 + casted = LLVMBuildSIToFP(builder, masked, LLVMVectorType(LLVMFloatType(), 4), ""); + + if (normalized) + scaled = LLVMBuildMul(builder, casted, LLVMConstVector(scales, 4), ""); + else + scaled = casted; + + for (i = 0; i < 4; ++i) + aux[i] = LLVMGetUndef(LLVMFloatType()); + + for (i = 0; i < 4; ++i) { + enum util_format_swizzle swizzle = desc->swizzle[i]; + + switch (swizzle) { + case UTIL_FORMAT_SWIZZLE_X: + case UTIL_FORMAT_SWIZZLE_Y: + case UTIL_FORMAT_SWIZZLE_Z: + case UTIL_FORMAT_SWIZZLE_W: + swizzles[i] = LLVMConstInt(LLVMInt32Type(), swizzle, 0); + break; + case UTIL_FORMAT_SWIZZLE_0: + assert(empty_channel >= 0); + swizzles[i] = LLVMConstInt(LLVMInt32Type(), empty_channel, 0); + break; + case UTIL_FORMAT_SWIZZLE_1: + swizzles[i] = LLVMConstInt(LLVMInt32Type(), 4, 0); + aux[0] = LLVMConstReal(LLVMFloatType(), 1.0); + break; + case UTIL_FORMAT_SWIZZLE_NONE: + swizzles[i] = LLVMGetUndef(LLVMFloatType()); + assert(0); + break; + } + } + + return LLVMBuildShuffleVector(builder, scaled, LLVMConstVector(aux, 4), LLVMConstVector(swizzles, 4), ""); +} + + +LLVMValueRef +lp_build_pack_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef rgba) +{ + const struct util_format_description *desc; + LLVMTypeRef type; + LLVMValueRef packed = NULL; + LLVMValueRef swizzles[4]; + LLVMValueRef shifted, casted, scaled, unswizzled; + LLVMValueRef shifts[4]; + LLVMValueRef scales[4]; + bool normalized; + unsigned shift; + unsigned i, j; + + desc = util_format_description(format); + + assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); + assert(desc->block.width == 1); + assert(desc->block.height == 1); + + type = LLVMIntType(desc->block.bits); + + /* Unswizzle the color components into the source vector. */ + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) { + if (desc->swizzle[j] == i) + break; + } + if (j < 4) + swizzles[i] = LLVMConstInt(LLVMInt32Type(), j, 0); + else + swizzles[i] = LLVMGetUndef(LLVMInt32Type()); + } + + unswizzled = LLVMBuildShuffleVector(builder, rgba, + LLVMGetUndef(LLVMVectorType(LLVMFloatType(), 4)), + LLVMConstVector(swizzles, 4), ""); + + normalized = FALSE; + shift = 0; + for (i = 0; i < 4; ++i) { + unsigned bits = desc->channel[i].size; + + if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { + shifts[i] = LLVMGetUndef(LLVMInt32Type()); + scales[i] = LLVMGetUndef(LLVMFloatType()); + } + else { + unsigned mask = (1 << bits) - 1; + + assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); + assert(bits < 32); + + shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); + + if (desc->channel[i].normalized) { + scales[i] = LLVMConstReal(LLVMFloatType(), mask); + normalized = TRUE; + } + else + scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); + } + + shift += bits; + } + + if (normalized) + scaled = LLVMBuildMul(builder, unswizzled, LLVMConstVector(scales, 4), ""); + else + scaled = unswizzled; + + casted = LLVMBuildFPToSI(builder, scaled, LLVMVectorType(LLVMInt32Type(), 4), ""); + + shifted = LLVMBuildShl(builder, casted, LLVMConstVector(shifts, 4), ""); + + /* Bitwise or all components */ + for (i = 0; i < 4; ++i) { + if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) { + LLVMValueRef component = LLVMBuildExtractElement(builder, shifted, LLVMConstInt(LLVMInt32Type(), i, 0), ""); + if (packed) + packed = LLVMBuildOr(builder, packed, component, ""); + else + packed = component; + } + } + + if (!packed) + packed = LLVMGetUndef(LLVMInt32Type()); + + if (desc->block.bits < 32) + packed = LLVMBuildTrunc(builder, packed, type, ""); + + return packed; +} + + +LLVMValueRef +lp_build_load_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef ptr) +{ + const struct util_format_description *desc; + LLVMTypeRef type; + LLVMValueRef packed; + + desc = util_format_description(format); + + /* FIXME: Support more formats */ + assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); + assert(desc->block.width == 1); + assert(desc->block.height == 1); + assert(desc->block.bits <= 32); + + type = LLVMIntType(desc->block.bits); + + ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), ""); + + packed = LLVMBuildLoad(builder, ptr, ""); + + return lp_build_unpack_rgba(builder, format, packed); +} + + +void +lp_build_store_rgba(LLVMBuilderRef builder, + enum pipe_format format, + LLVMValueRef ptr, + LLVMValueRef rgba) +{ + const struct util_format_description *desc; + LLVMTypeRef type; + LLVMValueRef packed; + + desc = util_format_description(format); + + assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); + assert(desc->block.width == 1); + assert(desc->block.height == 1); + + type = LLVMIntType(desc->block.bits); + + packed = lp_build_pack_rgba(builder, format, rgba); + + ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), ""); + + LLVMBuildStore(builder, packed, ptr); +} + diff --git a/src/gallium/drivers/llvmpipe/lp_bld_load.c b/src/gallium/drivers/llvmpipe/lp_bld_load.c deleted file mode 100644 index 27db7b2db0c..00000000000 --- a/src/gallium/drivers/llvmpipe/lp_bld_load.c +++ /dev/null @@ -1,59 +0,0 @@ -/************************************************************************** - * - * 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_format.h" - - -LLVMValueRef -lp_build_load_rgba(LLVMBuilderRef builder, - enum pipe_format format, - LLVMValueRef ptr) -{ - const struct util_format_description *desc; - LLVMTypeRef type; - LLVMValueRef packed; - - desc = util_format_description(format); - - /* FIXME: Support more formats */ - assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); - assert(desc->block.width == 1); - assert(desc->block.height == 1); - assert(desc->block.bits <= 32); - - type = LLVMIntType(desc->block.bits); - - ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), ""); - - packed = LLVMBuildLoad(builder, ptr, ""); - - return lp_build_unpack_rgba(builder, format, packed); -} - diff --git a/src/gallium/drivers/llvmpipe/lp_bld_pack.c b/src/gallium/drivers/llvmpipe/lp_bld_pack.c deleted file mode 100644 index 71261e4f393..00000000000 --- a/src/gallium/drivers/llvmpipe/lp_bld_pack.c +++ /dev/null @@ -1,130 +0,0 @@ -/************************************************************************** - * - * 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_format.h" - - -LLVMValueRef -lp_build_pack_rgba(LLVMBuilderRef builder, - enum pipe_format format, - LLVMValueRef rgba) -{ - const struct util_format_description *desc; - LLVMTypeRef type; - LLVMValueRef packed = NULL; - LLVMValueRef swizzles[4]; - LLVMValueRef shifted, casted, scaled, unswizzled; - LLVMValueRef shifts[4]; - LLVMValueRef scales[4]; - bool normalized; - unsigned shift; - unsigned i, j; - - desc = util_format_description(format); - - assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); - assert(desc->block.width == 1); - assert(desc->block.height == 1); - - type = LLVMIntType(desc->block.bits); - - /* Unswizzle the color components into the source vector. */ - for (i = 0; i < 4; ++i) { - for (j = 0; j < 4; ++j) { - if (desc->swizzle[j] == i) - break; - } - if (j < 4) - swizzles[i] = LLVMConstInt(LLVMInt32Type(), j, 0); - else - swizzles[i] = LLVMGetUndef(LLVMInt32Type()); - } - - unswizzled = LLVMBuildShuffleVector(builder, rgba, - LLVMGetUndef(LLVMVectorType(LLVMFloatType(), 4)), - LLVMConstVector(swizzles, 4), ""); - - normalized = FALSE; - shift = 0; - for (i = 0; i < 4; ++i) { - unsigned bits = desc->channel[i].size; - - if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { - shifts[i] = LLVMGetUndef(LLVMInt32Type()); - scales[i] = LLVMGetUndef(LLVMFloatType()); - } - else { - unsigned mask = (1 << bits) - 1; - - assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); - assert(bits < 32); - - shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); - - if (desc->channel[i].normalized) { - scales[i] = LLVMConstReal(LLVMFloatType(), mask); - normalized = TRUE; - } - else - scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); - } - - shift += bits; - } - - if (normalized) - scaled = LLVMBuildMul(builder, unswizzled, LLVMConstVector(scales, 4), ""); - else - scaled = unswizzled; - - casted = LLVMBuildFPToSI(builder, scaled, LLVMVectorType(LLVMInt32Type(), 4), ""); - - shifted = LLVMBuildShl(builder, casted, LLVMConstVector(shifts, 4), ""); - - /* Bitwise or all components */ - for (i = 0; i < 4; ++i) { - if (desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED) { - LLVMValueRef component = LLVMBuildExtractElement(builder, shifted, LLVMConstInt(LLVMInt32Type(), i, 0), ""); - if (packed) - packed = LLVMBuildOr(builder, packed, component, ""); - else - packed = component; - } - } - - if (!packed) - packed = LLVMGetUndef(LLVMInt32Type()); - - if (desc->block.bits < 32) - packed = LLVMBuildTrunc(builder, packed, type, ""); - - return packed; -} - diff --git a/src/gallium/drivers/llvmpipe/lp_bld_store.c b/src/gallium/drivers/llvmpipe/lp_bld_store.c deleted file mode 100644 index 1da6dac8a2f..00000000000 --- a/src/gallium/drivers/llvmpipe/lp_bld_store.c +++ /dev/null @@ -1,58 +0,0 @@ -/************************************************************************** - * - * 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_format.h" - - -void -lp_build_store_rgba(LLVMBuilderRef builder, - enum pipe_format format, - LLVMValueRef ptr, - LLVMValueRef rgba) -{ - const struct util_format_description *desc; - LLVMTypeRef type; - LLVMValueRef packed; - - desc = util_format_description(format); - - assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); - assert(desc->block.width == 1); - assert(desc->block.height == 1); - - type = LLVMIntType(desc->block.bits); - - packed = lp_build_pack_rgba(builder, format, rgba); - - ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, 0), ""); - - LLVMBuildStore(builder, packed, ptr); -} - diff --git a/src/gallium/drivers/llvmpipe/lp_bld_unpack.c b/src/gallium/drivers/llvmpipe/lp_bld_unpack.c deleted file mode 100644 index d70faac1ba2..00000000000 --- a/src/gallium/drivers/llvmpipe/lp_bld_unpack.c +++ /dev/null @@ -1,152 +0,0 @@ -/************************************************************************** - * - * 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_format.h" - - -LLVMValueRef -lp_build_unpack_rgba(LLVMBuilderRef builder, - enum pipe_format format, - LLVMValueRef packed) -{ - const struct util_format_description *desc; - LLVMTypeRef type; - LLVMValueRef shifted, casted, scaled, masked; - LLVMValueRef shifts[4]; - LLVMValueRef masks[4]; - LLVMValueRef scales[4]; - LLVMValueRef swizzles[4]; - LLVMValueRef aux[4]; - bool normalized; - int empty_channel; - unsigned shift; - unsigned i; - - desc = util_format_description(format); - - /* FIXME: Support more formats */ - assert(desc->layout == UTIL_FORMAT_LAYOUT_ARITH); - assert(desc->block.width == 1); - assert(desc->block.height == 1); - assert(desc->block.bits <= 32); - - type = LLVMIntType(desc->block.bits); - - /* Do the intermediate integer computations with 32bit integers since it - * matches floating point size */ - if (desc->block.bits < 32) - packed = LLVMBuildZExt(builder, packed, LLVMInt32Type(), ""); - - /* Broadcast the packed value to all four channels */ - packed = LLVMBuildInsertElement(builder, - LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), - packed, - LLVMConstNull(LLVMInt32Type()), - ""); - packed = LLVMBuildShuffleVector(builder, - packed, - LLVMGetUndef(LLVMVectorType(LLVMInt32Type(), 4)), - LLVMConstNull(LLVMVectorType(LLVMInt32Type(), 4)), - ""); - - /* Initialize vector constants */ - normalized = FALSE; - empty_channel = -1; - shift = 0; - for (i = 0; i < 4; ++i) { - unsigned bits = desc->channel[i].size; - - if (desc->channel[i].type == UTIL_FORMAT_TYPE_VOID) { - shifts[i] = LLVMGetUndef(LLVMInt32Type()); - masks[i] = LLVMConstNull(LLVMInt32Type()); - scales[i] = LLVMConstNull(LLVMFloatType()); - empty_channel = i; - } - else { - unsigned mask = (1 << bits) - 1; - - assert(desc->channel[i].type == UTIL_FORMAT_TYPE_UNSIGNED); - assert(bits < 32); - - shifts[i] = LLVMConstInt(LLVMInt32Type(), shift, 0); - masks[i] = LLVMConstInt(LLVMInt32Type(), mask, 0); - - if (desc->channel[i].normalized) { - scales[i] = LLVMConstReal(LLVMFloatType(), 1.0/mask); - normalized = TRUE; - } - else - scales[i] = LLVMConstReal(LLVMFloatType(), 1.0); - } - - shift += bits; - } - - shifted = LLVMBuildLShr(builder, packed, LLVMConstVector(shifts, 4), ""); - masked = LLVMBuildAnd(builder, shifted, LLVMConstVector(masks, 4), ""); - // UIToFP can't be expressed in SSE2 - casted = LLVMBuildSIToFP(builder, masked, LLVMVectorType(LLVMFloatType(), 4), ""); - - if (normalized) - scaled = LLVMBuildMul(builder, casted, LLVMConstVector(scales, 4), ""); - else - scaled = casted; - - for (i = 0; i < 4; ++i) - aux[i] = LLVMGetUndef(LLVMFloatType()); - - for (i = 0; i < 4; ++i) { - enum util_format_swizzle swizzle = desc->swizzle[i]; - - switch (swizzle) { - case UTIL_FORMAT_SWIZZLE_X: - case UTIL_FORMAT_SWIZZLE_Y: - case UTIL_FORMAT_SWIZZLE_Z: - case UTIL_FORMAT_SWIZZLE_W: - swizzles[i] = LLVMConstInt(LLVMInt32Type(), swizzle, 0); - break; - case UTIL_FORMAT_SWIZZLE_0: - assert(empty_channel >= 0); - swizzles[i] = LLVMConstInt(LLVMInt32Type(), empty_channel, 0); - break; - case UTIL_FORMAT_SWIZZLE_1: - swizzles[i] = LLVMConstInt(LLVMInt32Type(), 4, 0); - aux[0] = LLVMConstReal(LLVMFloatType(), 1.0); - break; - case UTIL_FORMAT_SWIZZLE_NONE: - swizzles[i] = LLVMGetUndef(LLVMFloatType()); - assert(0); - break; - } - } - - return LLVMBuildShuffleVector(builder, scaled, LLVMConstVector(aux, 4), LLVMConstVector(swizzles, 4), ""); -} -