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shader: unpack buffer offsets from one load per packed word

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This commit is contained in:
nmzik
2026-10-09 02:46:18 +02:00
parent b4853a0e08
commit 13e3ca314c
2 changed files with 29 additions and 30 deletions
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tests/ShaderRecompilerComputeTests.cpp
+24 -25
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@@ -28545,32 +28545,29 @@ TestCase BufferStoreDwordAppliesHostOffset() {
return test;
}
TestCase BufferOffsetsUsePackedLaneAndStorageFallback() {
TestCase BufferOffsetsUsePackedWords(bool storage) {
using O = ShaderOpcode;
std::vector<u32> code;
for (u32 base : {0u, 4u}) {
AppendSMovLiteral(&code, base, 0x1000u + base * 0x1000u);
AppendSMovLiteral(&code, base + 1u, 4u << 16u);
AppendSMovLiteral(&code, base + 2u, 1u);
AppendSMovLiteral(&code, base + 3u, 1u << 24u);
}
AppendVMovLiteral(&code, 0, 0x12345678u);
code.push_back(EncodeMubuf0(0x1cu, 0, false, false));
code.push_back(EncodeMubuf1(0, 0, 20));
AppendVMovLiteral(&code, 1, 0xabcdef01u);
code.push_back(EncodeMubuf0(0x1cu, 0, false, false));
code.push_back(EncodeMubuf1(1, 1, 20));
AppendEnd(&code);
constexpr std::array offsets{0u, 12u, 20u, 28u, 36u};
TestCase test;
test.name = "BufferOffsetsUsePackedLaneAndStorageFallback";
test.code = std::move(code);
test.initial = {0, 0, 0, 0};
test.expected = {0x12345678u, 0, 0, 0xabcdef01u};
test.name = storage ? "BufferOffsetsPackedWordsStorage" : "BufferOffsetsPackedWordsPush";
test.initial.resize(10);
test.expected = test.initial;
for (u32 i = 0; i < offsets.size(); ++i) {
const auto base = i * 4u;
AppendSMovLiteral(&test.code, base, 0x1000u + base * 0x1000u);
AppendSMovLiteral(&test.code, base + 1u, 4u << 16u);
AppendSMovLiteral(&test.code, base + 2u, 1u);
AppendSMovLiteral(&test.code, base + 3u, 1u << 24u);
const auto value = 0x12345678u + i;
AppendVMovLiteral(&test.code, i, value);
test.code.push_back(EncodeMubuf0(0x1cu, 0, false, false));
test.code.push_back(EncodeMubuf1(i, i, 20));
test.expected[offsets[i] / 4u] = value;
}
AppendEnd(&test.code);
test.storage_buffer_range_bytes = 4;
test.storage_buffer_offsets = {0, 12};
test.expand_shader_data_storage = true;
test.storage_buffer_offsets.assign(offsets.begin(), offsets.end());
test.expand_shader_data_storage = storage;
test.opcodes = {O::S_MOV_B32, O::V_MOV_B32, O::BUFFER_STORE_DWORD,
O::S_ENDPGM};
return test;
@@ -36576,7 +36573,8 @@ std::vector<TestCase> MakeCases() {
AddCase(BufferLoadDwordIdxenUsesDescriptorStride);
AddCase(BufferStoreDwordIdxenUsesDescriptorStride);
AddCase(BufferStoreDwordAppliesHostOffset);
AddCase(BufferOffsetsUsePackedLaneAndStorageFallback);
cases.push_back(BufferOffsetsUsePackedWords(false));
cases.push_back(BufferOffsetsUsePackedWords(true));
AddCase(BufferLoadVariants);
for (const u32 component : {4u, 2u, 0u}) {
cases.push_back(BufferSubwordLoadsAtHostOffset(2, component, false));
@@ -42370,7 +42368,8 @@ int main(int argc, char **argv) {
if (argc == 2 && std::strcmp(argv[1], "--shader-data-storage-only") == 0) {
CheckResourcePlanHandoff();
VulkanHarness vulkan;
RunCase(&vulkan, BufferOffsetsUsePackedLaneAndStorageFallback());
RunCase(&vulkan, BufferOffsetsUsePackedWords(false));
RunCase(&vulkan, BufferOffsetsUsePackedWords(true));
return 0;
}
if (argc == 2 && std::strcmp(argv[1], "--buffer-publication-only") == 0) {