| /* |
| * Copyright 2019 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkColorPriv.h" |
| #include "include/private/SkColorData.h" |
| #include "src/core/SkVM.h" |
| #include "tests/Test.h" |
| #include "tools/Resources.h" |
| #include "tools/SkVMBuilders.h" |
| |
| using Fmt = SrcoverBuilder_F32::Fmt; |
| const char* fmt_name(Fmt fmt) { |
| switch (fmt) { |
| case Fmt::A8: return "A8"; |
| case Fmt::G8: return "G8"; |
| case Fmt::RGBA_8888: return "RGBA_8888"; |
| } |
| return ""; |
| } |
| |
| DEF_TEST(SkVM, r) { |
| SkDynamicMemoryWStream buf; |
| |
| // Write all combinations of SrcoverBuilder_F32 |
| for (int s = 0; s < 3; s++) |
| for (int d = 0; d < 3; d++) { |
| auto srcFmt = (Fmt)s, |
| dstFmt = (Fmt)d; |
| SrcoverBuilder_F32 builder{srcFmt, dstFmt}; |
| skvm::Program program = builder.done(); |
| |
| buf.writeText(fmt_name(srcFmt)); |
| buf.writeText(" over "); |
| buf.writeText(fmt_name(dstFmt)); |
| buf.writeText("\n"); |
| builder.dump(&buf); |
| buf.writeText("\n"); |
| program.dump(&buf); |
| buf.writeText("\n"); |
| } |
| |
| // Write the I32 Srcovers also. |
| { |
| skvm::Program program = SrcoverBuilder_I32_Naive{}.done(); |
| buf.writeText("I32 (Naive) 8888 over 8888\n"); |
| program.dump(&buf); |
| buf.writeText("\n"); |
| } |
| { |
| skvm::Program program = SrcoverBuilder_I32{}.done(); |
| buf.writeText("I32 8888 over 8888\n"); |
| program.dump(&buf); |
| buf.writeText("\n"); |
| } |
| { |
| skvm::Program program = SrcoverBuilder_I32_SWAR{}.done(); |
| buf.writeText("I32 (SWAR) 8888 over 8888\n"); |
| program.dump(&buf); |
| buf.writeText("\n"); |
| } |
| |
| sk_sp<SkData> blob = buf.detachAsData(); |
| { |
| |
| sk_sp<SkData> expected = GetResourceAsData("SkVMTest.expected"); |
| REPORTER_ASSERT(r, expected, "Couldn't load SkVMTest.expected."); |
| if (expected) { |
| if (blob->size() != expected->size() |
| || 0 != memcmp(blob->data(), expected->data(), blob->size())) { |
| |
| ERRORF(r, "SkVMTest expected\n%.*s\nbut got\n%.*s\n", |
| expected->size(), expected->data(), |
| blob->size(), blob->data()); |
| } |
| |
| SkFILEWStream out(GetResourcePath("SkVMTest.expected").c_str()); |
| if (out.isValid()) { |
| out.write(blob->data(), blob->size()); |
| } |
| } |
| } |
| |
| auto test_8888 = [&](const skvm::Program& program) { |
| uint32_t src[9]; |
| uint32_t dst[SK_ARRAY_COUNT(src)]; |
| |
| for (int i = 0; i < (int)SK_ARRAY_COUNT(src); i++) { |
| src[i] = 0xbb007733; |
| dst[i] = 0xffaaccee; |
| } |
| |
| SkPMColor expected = SkPMSrcOver(src[0], dst[0]); // 0xff2dad73 |
| |
| program.eval((int)SK_ARRAY_COUNT(src), src, dst); |
| |
| // dst is probably 0xff2dad72. |
| for (auto got : dst) { |
| auto want = expected; |
| for (int i = 0; i < 4; i++) { |
| uint8_t d = got & 0xff, |
| w = want & 0xff; |
| REPORTER_ASSERT(r, abs(d-w) < 2); |
| got >>= 8; |
| want >>= 8; |
| } |
| } |
| }; |
| |
| test_8888(SrcoverBuilder_F32{Fmt::RGBA_8888, Fmt::RGBA_8888}.done()); |
| test_8888(SrcoverBuilder_I32_Naive{}.done()); |
| test_8888(SrcoverBuilder_I32{}.done()); |
| test_8888(SrcoverBuilder_I32_SWAR{}.done()); |
| |
| { |
| skvm::Program program = SrcoverBuilder_F32{Fmt::RGBA_8888, Fmt::G8}.done(); |
| |
| uint32_t src[9]; |
| uint8_t dst[SK_ARRAY_COUNT(src)]; |
| |
| for (int i = 0; i < (int)SK_ARRAY_COUNT(src); i++) { |
| src[i] = 0xbb007733; |
| dst[i] = 0x42; |
| } |
| |
| SkPMColor over = SkPMSrcOver(SkPackARGB32(0xbb, 0x33, 0x77, 0x00), |
| 0xff424242); |
| |
| uint8_t want = SkComputeLuminance(SkGetPackedR32(over), |
| SkGetPackedG32(over), |
| SkGetPackedB32(over)); |
| program.eval((int)SK_ARRAY_COUNT(src), src, dst); |
| |
| for (auto got : dst) { |
| REPORTER_ASSERT(r, abs(got-want) < 3); |
| } |
| } |
| |
| { |
| skvm::Program program = SrcoverBuilder_F32{Fmt::A8, Fmt::A8}.done(); |
| |
| uint8_t src[256], |
| dst[256]; |
| for (int i = 0; i < 256; i++) { |
| src[i] = 255 - i; |
| dst[i] = i; |
| } |
| |
| program.eval(256, src, dst); |
| |
| for (int i = 0; i < 256; i++) { |
| uint8_t want = SkGetPackedA32(SkPMSrcOver(SkPackARGB32(src[i], 0,0,0), |
| SkPackARGB32( i, 0,0,0))); |
| REPORTER_ASSERT(r, abs(dst[i]-want) < 2); |
| } |
| } |
| } |
| |
| DEF_TEST(SkVM_LoopCounts, r) { |
| // Make sure we cover all the exact N we want. |
| |
| int buf[64]; |
| for (int N = 0; N <= (int)SK_ARRAY_COUNT(buf); N++) { |
| for (int i = 0; i < (int)SK_ARRAY_COUNT(buf); i++) { |
| buf[i] = i; |
| } |
| |
| // buf[i] += 1 |
| skvm::Builder b; |
| b.store32(b.arg(0), |
| b.add(b.splat(1), |
| b.load32(b.arg(0)))); |
| |
| skvm::Program program = b.done(); |
| program.eval(N, buf); |
| |
| for (int i = 0; i < N; i++) { |
| REPORTER_ASSERT(r, buf[i] == i+1); |
| } |
| for (int i = N; i < (int)SK_ARRAY_COUNT(buf); i++) { |
| REPORTER_ASSERT(r, buf[i] == i); |
| } |
| } |
| } |
| |
| |
| template <typename Fn> |
| static void test_asm(skiatest::Reporter* r, Fn&& fn, std::initializer_list<uint8_t> expected) { |
| uint8_t buf[4096]; |
| skvm::Assembler a{buf}; |
| fn(a); |
| |
| REPORTER_ASSERT(r, a.size() == expected.size()); |
| |
| auto got = (const uint8_t*)buf, |
| want = expected.begin(); |
| for (int i = 0; i < (int)std::min(a.size(), expected.size()); i++) { |
| REPORTER_ASSERT(r, got[i] == want[i], |
| "byte %d was %02x, want %02x", i, got[i], want[i]); |
| } |
| } |
| |
| DEF_TEST(SkVM_Assembler, r) { |
| // Easiest way to generate test cases is |
| // |
| // echo '...some asm...' | llvm-mc -show-encoding -x86-asm-syntax=intel |
| // |
| // The -x86-asm-syntax=intel bit is optional, controlling the |
| // input syntax only; the output will always be AT&T op x,y,dst style. |
| // Our APIs read more like Intel op dst,x,y as op(dst,x,y), so I find |
| // that a bit easier to use here, despite maybe favoring AT&T overall. |
| |
| using A = skvm::Assembler; |
| // Our exit strategy from AVX code. |
| test_asm(r, [&](A& a) { |
| a.vzeroupper(); |
| a.ret(); |
| },{ |
| 0xc5, 0xf8, 0x77, |
| 0xc3, |
| }); |
| |
| // Align should pad with nop(). |
| test_asm(r, [&](A& a) { |
| a.ret(); |
| a.align(4); |
| },{ |
| 0xc3, |
| 0x90, 0x90, 0x90, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.add(A::rax, 8); // Always good to test rax. |
| a.sub(A::rax, 32); |
| |
| a.add(A::rdi, 12); // Last 0x48 REX |
| a.sub(A::rdi, 8); |
| |
| a.add(A::r8 , 7); // First 0x4c REX |
| a.sub(A::r8 , 4); |
| |
| a.add(A::rsi, 128); // Requires 4 byte immediate. |
| a.sub(A::r8 , 1000000); |
| },{ |
| 0x48, 0x83, 0b11'000'000, 0x08, |
| 0x48, 0x83, 0b11'101'000, 0x20, |
| |
| 0x48, 0x83, 0b11'000'111, 0x0c, |
| 0x48, 0x83, 0b11'101'111, 0x08, |
| |
| 0x4c, 0x83, 0b11'000'000, 0x07, |
| 0x4c, 0x83, 0b11'101'000, 0x04, |
| |
| 0x48, 0x81, 0b11'000'110, 0x80, 0x00, 0x00, 0x00, |
| 0x4c, 0x81, 0b11'101'000, 0x40, 0x42, 0x0f, 0x00, |
| }); |
| |
| |
| test_asm(r, [&](A& a) { |
| a.vpaddd (A::ymm0, A::ymm1, A::ymm2); // Low registers and 0x0f map -> 2-byte VEX. |
| a.vpaddd (A::ymm8, A::ymm1, A::ymm2); // A high dst register is ok -> 2-byte VEX. |
| a.vpaddd (A::ymm0, A::ymm8, A::ymm2); // A high first argument register -> 2-byte VEX. |
| a.vpaddd (A::ymm0, A::ymm1, A::ymm8); // A high second argument -> 3-byte VEX. |
| a.vpmulld(A::ymm0, A::ymm1, A::ymm2); // Using non-0x0f map instruction -> 3-byte VEX. |
| a.vpsubd (A::ymm0, A::ymm1, A::ymm2); // Test vpsubd to ensure argument order is right. |
| },{ |
| /* VEX */ /*op*/ /*modRM*/ |
| 0xc5, 0xf5, 0xfe, 0xc2, |
| 0xc5, 0x75, 0xfe, 0xc2, |
| 0xc5, 0xbd, 0xfe, 0xc2, |
| 0xc4, 0xc1, 0x75, 0xfe, 0xc0, |
| 0xc4, 0xe2, 0x75, 0x40, 0xc2, |
| 0xc5, 0xf5, 0xfa, 0xc2, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.vpsrld(A::ymm15, A::ymm2, 8); |
| a.vpsrld(A::ymm0 , A::ymm8, 5); |
| },{ |
| 0xc5, 0x85, 0x72,0xd2, 0x08, |
| 0xc4,0xc1,0x7d, 0x72,0xd0, 0x05, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.vpermq(A::ymm1, A::ymm2, 5); |
| },{ |
| 0xc4,0xe3,0xfd, 0x00,0xca, 0x05, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| A::Label l = a.here(); |
| a.byte(1); |
| a.byte(2); |
| a.byte(3); |
| a.byte(4); |
| |
| a.vbroadcastss(A::ymm0 , l); |
| a.vbroadcastss(A::ymm1 , l); |
| a.vbroadcastss(A::ymm8 , l); |
| a.vbroadcastss(A::ymm15, l); |
| |
| a.vpshufb(A::ymm4, A::ymm3, l); |
| },{ |
| 0x01, 0x02, 0x03, 0x4, |
| |
| /* VEX */ /*op*/ /* ModRM */ /* offset */ |
| 0xc4, 0xe2, 0x7d, 0x18, 0b00'000'101, 0xf3,0xff,0xff,0xff, // 0xfffffff3 == -13 |
| 0xc4, 0xe2, 0x7d, 0x18, 0b00'001'101, 0xea,0xff,0xff,0xff, // 0xffffffea == -22 |
| 0xc4, 0x62, 0x7d, 0x18, 0b00'000'101, 0xe1,0xff,0xff,0xff, // 0xffffffe1 == -31 |
| 0xc4, 0x62, 0x7d, 0x18, 0b00'111'101, 0xd8,0xff,0xff,0xff, // 0xffffffd8 == -40 |
| |
| 0xc4, 0xe2, 0x65, 0x00, 0b00'100'101, 0xcf,0xff,0xff,0xff, // 0xffffffcf == -49 |
| }); |
| |
| test_asm(r, [&](A& a) { |
| A::Label l = a.here(); |
| a.jne(l); |
| for (int i = 0; i < 124; i++) { |
| a.nop(); |
| } |
| a.jne(l); |
| a.jne(l); |
| },{ |
| 0x75, 0xfe, // short jump -2 bytes |
| |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, 0x90, |
| |
| 0x90, 0x90, 0x90, 0x90, |
| |
| 0x75, 0x80, // short jump -128 bytes |
| 0x0f, 0x85, 0x7a,0xff,0xff,0xff, // near jump back -134 bytes |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.vmovups(A::ymm5, A::rsi); |
| a.vmovups(A::rsi, A::ymm5); |
| |
| a.vpmovzxbd(A::ymm4, A::rsi); |
| |
| a.vmovq(A::rdx, A::xmm15); |
| },{ |
| /* VEX */ /*Op*/ /* ModRM */ |
| 0xc5, 0xfc, 0x10, 0b00'101'110, |
| 0xc5, 0xfc, 0x11, 0b00'101'110, |
| |
| 0xc4,0xe2,0x7d, 0x31, 0b00'100'110, |
| |
| 0xc5, 0x79, 0xd6, 0b00'111'010, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.vpandn(A::ymm3, A::ymm12, A::ymm2); |
| },{ |
| 0xc5, 0x9d, 0xdf, 0xda, |
| }); |
| |
| // echo "fmul v4.4s, v3.4s, v1.4s" | llvm-mc -show-encoding -arch arm64 |
| |
| test_asm(r, [&](A& a) { |
| a.and16b(A::v4, A::v3, A::v1); |
| a.orr16b(A::v4, A::v3, A::v1); |
| a.eor16b(A::v4, A::v3, A::v1); |
| a.bic16b(A::v4, A::v3, A::v1); |
| |
| a.add4s(A::v4, A::v3, A::v1); |
| a.sub4s(A::v4, A::v3, A::v1); |
| a.mul4s(A::v4, A::v3, A::v1); |
| |
| a.sub8h(A::v4, A::v3, A::v1); |
| a.mul8h(A::v4, A::v3, A::v1); |
| |
| a.fadd4s(A::v4, A::v3, A::v1); |
| a.fsub4s(A::v4, A::v3, A::v1); |
| a.fmul4s(A::v4, A::v3, A::v1); |
| a.fdiv4s(A::v4, A::v3, A::v1); |
| |
| a.fmla4s(A::v4, A::v3, A::v1); |
| },{ |
| 0x64,0x1c,0x21,0x4e, |
| 0x64,0x1c,0xa1,0x4e, |
| 0x64,0x1c,0x21,0x6e, |
| 0x64,0x1c,0x61,0x4e, |
| |
| 0x64,0x84,0xa1,0x4e, |
| 0x64,0x84,0xa1,0x6e, |
| 0x64,0x9c,0xa1,0x4e, |
| |
| 0x64,0x84,0x61,0x6e, |
| 0x64,0x9c,0x61,0x4e, |
| |
| 0x64,0xd4,0x21,0x4e, |
| 0x64,0xd4,0xa1,0x4e, |
| 0x64,0xdc,0x21,0x6e, |
| 0x64,0xfc,0x21,0x6e, |
| |
| 0x64,0xcc,0x21,0x4e, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.shl4s(A::v4, A::v3, 0); |
| a.shl4s(A::v4, A::v3, 1); |
| a.shl4s(A::v4, A::v3, 8); |
| a.shl4s(A::v4, A::v3, 16); |
| a.shl4s(A::v4, A::v3, 31); |
| |
| a.sshr4s(A::v4, A::v3, 1); |
| a.sshr4s(A::v4, A::v3, 8); |
| a.sshr4s(A::v4, A::v3, 31); |
| |
| a.ushr4s(A::v4, A::v3, 1); |
| a.ushr4s(A::v4, A::v3, 8); |
| a.ushr4s(A::v4, A::v3, 31); |
| |
| a.ushr8h(A::v4, A::v3, 1); |
| a.ushr8h(A::v4, A::v3, 8); |
| a.ushr8h(A::v4, A::v3, 15); |
| },{ |
| 0x64,0x54,0x20,0x4f, |
| 0x64,0x54,0x21,0x4f, |
| 0x64,0x54,0x28,0x4f, |
| 0x64,0x54,0x30,0x4f, |
| 0x64,0x54,0x3f,0x4f, |
| |
| 0x64,0x04,0x3f,0x4f, |
| 0x64,0x04,0x38,0x4f, |
| 0x64,0x04,0x21,0x4f, |
| |
| 0x64,0x04,0x3f,0x6f, |
| 0x64,0x04,0x38,0x6f, |
| 0x64,0x04,0x21,0x6f, |
| |
| 0x64,0x04,0x1f,0x6f, |
| 0x64,0x04,0x18,0x6f, |
| 0x64,0x04,0x11,0x6f, |
| }); |
| |
| test_asm(r, [&](A& a) { |
| a.scvtf4s (A::v4, A::v3); |
| a.fcvtzs4s(A::v4, A::v3); |
| },{ |
| 0x64,0xd8,0x21,0x4e, |
| 0x64,0xb8,0xa1,0x4e, |
| }); |
| } |
