diff options
Diffstat (limited to 'src/gallium/drivers')
| -rw-r--r-- | src/gallium/drivers/llvmpipe/lp_state_fs.c | 56 |
1 files changed, 50 insertions, 6 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c index e56ce1dc8df..b6f4c2a36c9 100644 --- a/src/gallium/drivers/llvmpipe/lp_state_fs.c +++ b/src/gallium/drivers/llvmpipe/lp_state_fs.c @@ -799,7 +799,8 @@ load_unswizzled_block(struct gallivm_state *gallivm, gep[1] = LLVMBuildAdd(builder, bx, by, ""); dst_ptr = LLVMBuildGEP(builder, base_ptr, gep, 2, ""); - dst_ptr = LLVMBuildBitCast(builder, dst_ptr, LLVMPointerType(lp_build_vec_type(gallivm, dst_type), 0), ""); + dst_ptr = LLVMBuildBitCast(builder, dst_ptr, + LLVMPointerType(lp_build_vec_type(gallivm, dst_type), 0), ""); dst[i] = LLVMBuildLoad(builder, dst_ptr, ""); @@ -843,7 +844,8 @@ store_unswizzled_block(struct gallivm_state *gallivm, gep[1] = LLVMBuildAdd(builder, bx, by, ""); src_ptr = LLVMBuildGEP(builder, base_ptr, gep, 2, ""); - src_ptr = LLVMBuildBitCast(builder, src_ptr, LLVMPointerType(lp_build_vec_type(gallivm, src_type), 0), ""); + src_ptr = LLVMBuildBitCast(builder, src_ptr, + LLVMPointerType(lp_build_vec_type(gallivm, src_type), 0), ""); src_ptr = LLVMBuildStore(builder, src[i], src_ptr); @@ -1632,6 +1634,7 @@ generate_unswizzled_blend(struct gallivm_state *gallivm, struct lp_type blend_type; struct lp_type row_type; struct lp_type dst_type; + struct lp_type ls_type; unsigned char swizzle[TGSI_NUM_CHANNELS]; unsigned vector_width; @@ -2057,17 +2060,41 @@ generate_unswizzled_blend(struct gallivm_state *gallivm, */ dst_alignment = MIN2(16, dst_alignment); + ls_type = dst_type; + + if (dst_count > src_count) { + if ((dst_type.width == 8 || dst_type.width == 16) && + util_is_power_of_two(dst_type.length) && + dst_type.length * dst_type.width < 128) { + /* + * Never try to load values as 4xi8 which we will then + * concatenate to larger vectors. This gives llvm a real + * headache (the problem is the type legalizer (?) will + * try to load that as 4xi8 zext to 4xi32 to fill the vector, + * then the shuffles to concatenate are more or less impossible + * - llvm is easily capable of generating a sequence of 32 + * pextrb/pinsrb instructions for that. Albeit it appears to + * be fixed in llvm 4.0. So, load and concatenate with 32bit + * width to avoid the trouble (16bit seems not as bad, llvm + * probably recognizes the load+shuffle as only one shuffle + * is necessary, but we can do just the same anyway). + */ + ls_type.length = dst_type.length * dst_type.width / 32; + ls_type.width = 32; + } + } + if (is_1d) { load_unswizzled_block(gallivm, color_ptr, stride, block_width, 1, - dst, dst_type, dst_count / 4, dst_alignment); + dst, ls_type, dst_count / 4, dst_alignment); for (i = dst_count / 4; i < dst_count; i++) { - dst[i] = lp_build_undef(gallivm, dst_type); + dst[i] = lp_build_undef(gallivm, ls_type); } } else { load_unswizzled_block(gallivm, color_ptr, stride, block_width, block_height, - dst, dst_type, dst_count, dst_alignment); + dst, ls_type, dst_count, dst_alignment); } @@ -2082,7 +2109,24 @@ generate_unswizzled_blend(struct gallivm_state *gallivm, * on all 16 pixels in that single vector at once. */ if (dst_count > src_count) { - lp_build_concat_n(gallivm, dst_type, dst, 4, dst, src_count); + if (ls_type.length != dst_type.length && ls_type.length == 1) { + LLVMTypeRef elem_type = lp_build_elem_type(gallivm, ls_type); + LLVMTypeRef ls_vec_type = LLVMVectorType(elem_type, 1); + for (i = 0; i < dst_count; i++) { + dst[i] = LLVMBuildBitCast(builder, dst[i], ls_vec_type, ""); + } + } + + lp_build_concat_n(gallivm, ls_type, dst, 4, dst, src_count); + + if (ls_type.length != dst_type.length) { + struct lp_type tmp_type = dst_type; + tmp_type.length = dst_type.length * 4 / src_count; + for (i = 0; i < src_count; i++) { + dst[i] = LLVMBuildBitCast(builder, dst[i], + lp_build_vec_type(gallivm, tmp_type), ""); + } + } } /* |