glasm: Implement global memory fallbacks

5 years ago · 09ad2b5994
2 changed files with 89 additions and 50 deletions
--- a/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_instructions.h
@ -79,17 +79,17 @@ void EmitUndefU8(EmitContext& ctx);
 void EmitUndefU16(EmitContext& ctx);
 void EmitUndefU32(EmitContext& ctx);
 void EmitUndefU64(EmitContext& ctx);
-void EmitLoadGlobalU8(EmitContext& ctx);
-void EmitLoadGlobalS8(EmitContext& ctx);
-void EmitLoadGlobalU16(EmitContext& ctx);
-void EmitLoadGlobalS16(EmitContext& ctx);
-void EmitLoadGlobal32(EmitContext& ctx, Register address);
-void EmitLoadGlobal64(EmitContext& ctx, Register address);
-void EmitLoadGlobal128(EmitContext& ctx, Register address);
-void EmitWriteGlobalU8(EmitContext& ctx);
-void EmitWriteGlobalS8(EmitContext& ctx);
-void EmitWriteGlobalU16(EmitContext& ctx);
-void EmitWriteGlobalS16(EmitContext& ctx);
+void EmitLoadGlobalU8(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobalS8(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobalU16(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobalS16(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobal32(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobal64(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitLoadGlobal128(EmitContext& ctx, IR::Inst& inst, Register address);
+void EmitWriteGlobalU8(EmitContext& ctx, Register address, Register value);
+void EmitWriteGlobalS8(EmitContext& ctx, Register address, Register value);
+void EmitWriteGlobalU16(EmitContext& ctx, Register address, Register value);
+void EmitWriteGlobalS16(EmitContext& ctx, Register address, Register value);
 void EmitWriteGlobal32(EmitContext& ctx, Register address, ScalarU32 value);
 void EmitWriteGlobal64(EmitContext& ctx, Register address, Register value);
 void EmitWriteGlobal128(EmitContext& ctx, Register address, Register value);
--- a/src/shader_recompiler/backend/glasm/emit_glasm_memory.cpp
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_memory.cpp
@ -29,8 +29,39 @@ void StorageOp(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
    }
 }

+void GlobalStorageOp(EmitContext& ctx, Register address, std::string_view then_expr,
+                     std::string_view else_expr = {}) {
+    const size_t num_buffers{ctx.info.storage_buffers_descriptors.size()};
+    for (size_t index = 0; index < num_buffers; ++index) {
+        if (!ctx.info.nvn_buffer_used[index]) {
+            continue;
+        }
+        const auto& ssbo{ctx.info.storage_buffers_descriptors[index]};
+        ctx.Add("LDC.U64 DC.x,c[{}];"     // ssbo_addr
+                "LDC.U32 RC.x,c[{}];"     // ssbo_size_u32
+                "CVT.U64.U32 DC.y,RC.x;"  // ssbo_size = ssbo_size_u32
+                "ADD.U64 DC.y,DC.y,DC.x;" // ssbo_end = ssbo_addr + ssbo_size
+                "SGE.U64 RC.x,{}.x,DC.x;" // a = input_addr >= ssbo_addr ? -1 : 1
+                "SLT.U64 RC.y,{}.x,DC.y;" // b = input_addr < ssbo_end   ? -1 : 1
+                "AND.U.CC RC.x,RC.x,RC.y;"
+                "IF NE.x;"                // a && b
+                "SUB.U64 DC.x,{}.x,DC.x;" // offset = input_addr - ssbo_addr
+                "PK64.U DC.y,c[{}];"      // host_ssbo = cbuf
+                "ADD.U64 DC.x,DC.x,DC.y;" // host_addr = host_ssbo + offset
+                "{}",
+                "ELSE;", index, index, ssbo.cbuf_offset, ssbo.cbuf_offset + 8, address, address,
+                address, index, then_expr);
+    }
+    if (!else_expr.empty()) {
+        ctx.Add("{}", else_expr);
+    }
+    for (size_t index = 0; index < num_buffers; ++index) {
+        ctx.Add("ENDIF;");
+    }
+}
+
 template <typename ValueType>
-void Store(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset, ValueType value,
+void Write(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset, ValueType value,
           std::string_view size) {
    StorageOp(ctx, binding, offset, fmt::format("STORE.{} {},DC.x;", size, value));
 }
@ -41,65 +72,73 @@ void Load(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32
    StorageOp(ctx, binding, offset, fmt::format("LOAD.{} {},DC.x;", size, ret),
              fmt::format("MOV.U {},{{0,0,0,0}};", ret));
 }
+
+template <typename ValueType>
+void GlobalWrite(EmitContext& ctx, Register address, ValueType value, std::string_view size) {
+    GlobalStorageOp(ctx, address, fmt::format("STORE.{} {},DC.x;", size, value));
+}
+
+void GlobalLoad(EmitContext& ctx, IR::Inst& inst, Register address, std::string_view size) {
+    const Register ret{ctx.reg_alloc.Define(inst)};
+    GlobalStorageOp(ctx, address, fmt::format("LOAD.{} {},DC.x;", size, ret),
+                    fmt::format("MOV.S {},0;", ret));
+}
 } // Anonymous namespace

-void EmitLoadGlobalU8([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobalU8(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "U8");
 }

-void EmitLoadGlobalS8([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobalS8(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "S8");
 }

-void EmitLoadGlobalU16([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobalU16(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "U16");
 }

-void EmitLoadGlobalS16([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobalS16(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "S16");
 }

-void EmitLoadGlobal32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobal32(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "U32");
 }

-void EmitLoadGlobal64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobal64(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "U32X2");
 }

-void EmitLoadGlobal128([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address) {
-    throw NotImplementedException("GLASM instruction");
+void EmitLoadGlobal128(EmitContext& ctx, IR::Inst& inst, Register address) {
+    GlobalLoad(ctx, inst, address, "U32X4");
 }

-void EmitWriteGlobalU8([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobalU8(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "U8");
 }

-void EmitWriteGlobalS8([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobalS8(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "S8");
 }

-void EmitWriteGlobalU16([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobalU16(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "U16");
 }

-void EmitWriteGlobalS16([[maybe_unused]] EmitContext& ctx) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobalS16(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "S16");
 }

-void EmitWriteGlobal32([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address,
-                       [[maybe_unused]] ScalarU32 value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobal32(EmitContext& ctx, Register address, ScalarU32 value) {
+    GlobalWrite(ctx, address, value, "U32");
 }

-void EmitWriteGlobal64([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address,
-                       [[maybe_unused]] Register value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobal64(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "U32X2");
 }

-void EmitWriteGlobal128([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] Register address,
-                        [[maybe_unused]] Register value) {
-    throw NotImplementedException("GLASM instruction");
+void EmitWriteGlobal128(EmitContext& ctx, Register address, Register value) {
+    GlobalWrite(ctx, address, value, "U32X4");
 }

 void EmitLoadStorageU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
@ -139,37 +178,37 @@ void EmitLoadStorage128(EmitContext& ctx, IR::Inst& inst, const IR::Value& bindi

 void EmitWriteStorageU8(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                        ScalarU32 value) {
-    Store(ctx, binding, offset, value, "U8");
+    Write(ctx, binding, offset, value, "U8");
 }

 void EmitWriteStorageS8(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                        ScalarS32 value) {
-    Store(ctx, binding, offset, value, "S8");
+    Write(ctx, binding, offset, value, "S8");
 }

 void EmitWriteStorageU16(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                         ScalarU32 value) {
-    Store(ctx, binding, offset, value, "U16");
+    Write(ctx, binding, offset, value, "U16");
 }

 void EmitWriteStorageS16(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                         ScalarS32 value) {
-    Store(ctx, binding, offset, value, "S16");
+    Write(ctx, binding, offset, value, "S16");
 }

 void EmitWriteStorage32(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                        ScalarU32 value) {
-    Store(ctx, binding, offset, value, "U32");
+    Write(ctx, binding, offset, value, "U32");
 }

 void EmitWriteStorage64(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                        Register value) {
-    Store(ctx, binding, offset, value, "U32X2");
+    Write(ctx, binding, offset, value, "U32X2");
 }

 void EmitWriteStorage128(EmitContext& ctx, const IR::Value& binding, ScalarU32 offset,
                         Register value) {
-    Store(ctx, binding, offset, value, "U32X4");
+    Write(ctx, binding, offset, value, "U32X4");
 }

 } // namespace Shader::Backend::GLASM