diff options
Diffstat (limited to 'src/gallium/drivers/llvmpipe/lp_bld_format_soa.c')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_bld_format_soa.c | 114 |
1 files changed, 27 insertions, 87 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_bld_format_soa.c b/src/gallium/drivers/llvmpipe/lp_bld_format_soa.c index 66bebdc..64151d1 100644 --- a/src/gallium/drivers/llvmpipe/lp_bld_format_soa.c +++ b/src/gallium/drivers/llvmpipe/lp_bld_format_soa.c @@ -34,66 +34,17 @@ #include "lp_bld_format.h" -/** - * Gather elements from scatter positions in memory into a single vector. - * - * @param src_width src element width - * @param dst_width result element width (source will be expanded to fit) - * @param length length of the offsets, - * @param base_ptr base pointer, should be a i8 pointer type. - * @param offsets vector with offsets - */ -LLVMValueRef -lp_build_gather(LLVMBuilderRef builder, - unsigned length, - unsigned src_width, - unsigned dst_width, - LLVMValueRef base_ptr, - LLVMValueRef offsets) -{ - LLVMTypeRef src_type = LLVMIntType(src_width); - LLVMTypeRef src_ptr_type = LLVMPointerType(src_type, 0); - LLVMTypeRef dst_elem_type = LLVMIntType(dst_width); - LLVMTypeRef dst_vec_type = LLVMVectorType(dst_elem_type, length); - LLVMValueRef res; - unsigned i; - - res = LLVMGetUndef(dst_vec_type); - for(i = 0; i < length; ++i) { - LLVMValueRef index = LLVMConstInt(LLVMInt32Type(), i, 0); - LLVMValueRef elem_offset; - LLVMValueRef elem_ptr; - LLVMValueRef elem; - - elem_offset = LLVMBuildExtractElement(builder, offsets, index, ""); - elem_ptr = LLVMBuildGEP(builder, base_ptr, &elem_offset, 1, ""); - elem_ptr = LLVMBuildBitCast(builder, elem_ptr, src_ptr_type, ""); - elem = LLVMBuildLoad(builder, elem_ptr, ""); - - assert(src_width <= dst_width); - if(src_width > dst_width) - elem = LLVMBuildTrunc(builder, elem, dst_elem_type, ""); - if(src_width < dst_width) - elem = LLVMBuildZExt(builder, elem, dst_elem_type, ""); - - res = LLVMBuildInsertElement(builder, res, elem, index, ""); - } - - return res; -} - - static LLVMValueRef -lp_build_format_swizzle(struct lp_type type, - const LLVMValueRef *inputs, - enum util_format_swizzle swizzle) +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 inputs[swizzle]; + return unswizzled[swizzle]; case UTIL_FORMAT_SWIZZLE_0: return lp_build_zero(type); case UTIL_FORMAT_SWIZZLE_1: @@ -108,6 +59,28 @@ lp_build_format_swizzle(struct lp_type 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, @@ -172,38 +145,5 @@ lp_build_unpack_rgba_soa(LLVMBuilderRef builder, start = stop; } - if(format_desc->colorspace == UTIL_FORMAT_COLORSPACE_ZS) { - enum util_format_swizzle swizzle = format_desc->swizzle[0]; - LLVMValueRef depth = lp_build_format_swizzle(type, inputs, swizzle); - rgba[2] = rgba[1] = rgba[0] = depth; - rgba[3] = lp_build_one(type); - } - else { - for (chan = 0; chan < 4; ++chan) { - enum util_format_swizzle swizzle = format_desc->swizzle[chan]; - rgba[chan] = lp_build_format_swizzle(type, inputs, swizzle); - } - } -} - - -void -lp_build_load_rgba_soa(LLVMBuilderRef builder, - const struct util_format_description *format_desc, - struct lp_type type, - LLVMValueRef base_ptr, - LLVMValueRef offsets, - LLVMValueRef *rgba) -{ - LLVMValueRef packed; - - assert(format_desc->block.width == 1); - assert(format_desc->block.height == 1); - assert(format_desc->block.bits <= type.width); - - packed = lp_build_gather(builder, - type.length, format_desc->block.bits, type.width, - base_ptr, offsets); - - lp_build_unpack_rgba_soa(builder, format_desc, type, packed, rgba); + lp_build_format_swizzle_soa(format_desc, type, inputs, rgba); } |