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authorbunnei <bunneidev@gmail.com>2019-12-22 04:50:28 +0100
committerGitHub <noreply@github.com>2019-12-22 04:50:28 +0100
commit16dcfacbfca912ee281f62b37eafb6258935fa55 (patch)
tree130f49d287ac8dd3fd1d775e0d1a8c401ca7a289 /src/video_core
parentMerge pull request #3234 from ReinUsesLisp/i2f-u8-selector (diff)
parentshader/memory: Implement LDG.U8 and unaligned U8 loads (diff)
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Diffstat (limited to 'src/video_core')
-rw-r--r--src/video_core/shader/decode/memory.cpp38
1 files changed, 32 insertions, 6 deletions
diff --git a/src/video_core/shader/decode/memory.cpp b/src/video_core/shader/decode/memory.cpp
index 78e92f52e..c934d0719 100644
--- a/src/video_core/shader/decode/memory.cpp
+++ b/src/video_core/shader/decode/memory.cpp
@@ -22,7 +22,23 @@ using Tegra::Shader::Register;
namespace {
-u32 GetUniformTypeElementsCount(Tegra::Shader::UniformType uniform_type) {
+u32 GetLdgMemorySize(Tegra::Shader::UniformType uniform_type) {
+ switch (uniform_type) {
+ case Tegra::Shader::UniformType::UnsignedByte:
+ case Tegra::Shader::UniformType::Single:
+ return 1;
+ case Tegra::Shader::UniformType::Double:
+ return 2;
+ case Tegra::Shader::UniformType::Quad:
+ case Tegra::Shader::UniformType::UnsignedQuad:
+ return 4;
+ default:
+ UNIMPLEMENTED_MSG("Unimplemented size={}!", static_cast<u32>(uniform_type));
+ return 1;
+ }
+}
+
+u32 GetStgMemorySize(Tegra::Shader::UniformType uniform_type) {
switch (uniform_type) {
case Tegra::Shader::UniformType::Single:
return 1;
@@ -170,7 +186,7 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
const auto [real_address_base, base_address, descriptor] =
TrackGlobalMemory(bb, instr, false);
- const u32 count = GetUniformTypeElementsCount(type);
+ const u32 count = GetLdgMemorySize(type);
if (!real_address_base || !base_address) {
// Tracking failed, load zeroes.
for (u32 i = 0; i < count; ++i) {
@@ -181,12 +197,22 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
for (u32 i = 0; i < count; ++i) {
const Node it_offset = Immediate(i * 4);
- const Node real_address =
- Operation(OperationCode::UAdd, NO_PRECISE, real_address_base, it_offset);
- const Node gmem = MakeNode<GmemNode>(real_address, base_address, descriptor);
+ const Node real_address = Operation(OperationCode::UAdd, real_address_base, it_offset);
+ Node gmem = MakeNode<GmemNode>(real_address, base_address, descriptor);
+
+ if (type == Tegra::Shader::UniformType::UnsignedByte) {
+ // To handle unaligned loads get the byte used to dereferenced global memory
+ // and extract that byte from the loaded uint32.
+ Node byte = Operation(OperationCode::UBitwiseAnd, real_address, Immediate(3));
+ byte = Operation(OperationCode::ULogicalShiftLeft, std::move(byte), Immediate(3));
+
+ gmem = Operation(OperationCode::UBitfieldExtract, std::move(gmem), std::move(byte),
+ Immediate(8));
+ }
SetTemporary(bb, i, gmem);
}
+
for (u32 i = 0; i < count; ++i) {
SetRegister(bb, instr.gpr0.Value() + i, GetTemporary(i));
}
@@ -276,7 +302,7 @@ u32 ShaderIR::DecodeMemory(NodeBlock& bb, u32 pc) {
break;
}
- const u32 count = GetUniformTypeElementsCount(type);
+ const u32 count = GetStgMemorySize(type);
for (u32 i = 0; i < count; ++i) {
const Node it_offset = Immediate(i * 4);
const Node real_address = Operation(OperationCode::UAdd, real_address_base, it_offset);