Merge pull request #6585 from ameerj/hades

Shader Decompiler Rewrite

1 files changed, 150 insertions, 0 deletions

diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_warp.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_warp.cpp
new file mode 100644
index 000000000..544d475b4
--- /dev/null
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_warp.cpp
@@ -0,0 +1,150 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "shader_recompiler/backend/glasm/emit_context.h"
+#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
+#include "shader_recompiler/frontend/ir/value.h"
+#include "shader_recompiler/profile.h"
+
+namespace Shader::Backend::GLASM {
+
+void EmitLaneId(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.S {}.x,{}.threadid;", inst, ctx.stage_name);
+}
+
+void EmitVoteAll(EmitContext& ctx, IR::Inst& inst, ScalarS32 pred) {
+    ctx.Add("TGALL.S {}.x,{};", inst, pred);
+}
+
+void EmitVoteAny(EmitContext& ctx, IR::Inst& inst, ScalarS32 pred) {
+    ctx.Add("TGANY.S {}.x,{};", inst, pred);
+}
+
+void EmitVoteEqual(EmitContext& ctx, IR::Inst& inst, ScalarS32 pred) {
+    ctx.Add("TGEQ.S {}.x,{};", inst, pred);
+}
+
+void EmitSubgroupBallot(EmitContext& ctx, IR::Inst& inst, ScalarS32 pred) {
+    ctx.Add("TGBALLOT {}.x,{};", inst, pred);
+}
+
+void EmitSubgroupEqMask(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.U {},{}.threadeqmask;", inst, ctx.stage_name);
+}
+
+void EmitSubgroupLtMask(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.U {},{}.threadltmask;", inst, ctx.stage_name);
+}
+
+void EmitSubgroupLeMask(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.U {},{}.threadlemask;", inst, ctx.stage_name);
+}
+
+void EmitSubgroupGtMask(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.U {},{}.threadgtmask;", inst, ctx.stage_name);
+}
+
+void EmitSubgroupGeMask(EmitContext& ctx, IR::Inst& inst) {
+    ctx.Add("MOV.U {},{}.threadgemask;", inst, ctx.stage_name);
+}
+
+static void Shuffle(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
+                    const IR::Value& clamp, const IR::Value& segmentation_mask,
+                    std::string_view op) {
+    IR::Inst* const in_bounds{inst.GetAssociatedPseudoOperation(IR::Opcode::GetInBoundsFromOp)};
+    if (in_bounds) {
+        in_bounds->Invalidate();
+    }
+    std::string mask;
+    if (clamp.IsImmediate() && segmentation_mask.IsImmediate()) {
+        mask = fmt::to_string(clamp.U32() | (segmentation_mask.U32() << 8));
+    } else {
+        mask = "RC";
+        ctx.Add("BFI.U RC.x,{{5,8,0,0}},{},{};",
+                ScalarU32{ctx.reg_alloc.Consume(segmentation_mask)},
+                ScalarU32{ctx.reg_alloc.Consume(clamp)});
+    }
+    const Register value_ret{ctx.reg_alloc.Define(inst)};
+    if (in_bounds) {
+        const Register bounds_ret{ctx.reg_alloc.Define(*in_bounds)};
+        ctx.Add("SHF{}.U {},{},{},{};"
+                "MOV.U {}.x,{}.y;",
+                op, bounds_ret, value, index, mask, value_ret, bounds_ret);
+    } else {
+        ctx.Add("SHF{}.U {},{},{},{};"
+                "MOV.U {}.x,{}.y;",
+                op, value_ret, value, index, mask, value_ret, value_ret);
+    }
+}
+
+void EmitShuffleIndex(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
+                      const IR::Value& clamp, const IR::Value& segmentation_mask) {
+    Shuffle(ctx, inst, value, index, clamp, segmentation_mask, "IDX");
+}
+
+void EmitShuffleUp(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
+                   const IR::Value& clamp, const IR::Value& segmentation_mask) {
+    Shuffle(ctx, inst, value, index, clamp, segmentation_mask, "UP");
+}
+
+void EmitShuffleDown(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
+                     const IR::Value& clamp, const IR::Value& segmentation_mask) {
+    Shuffle(ctx, inst, value, index, clamp, segmentation_mask, "DOWN");
+}
+
+void EmitShuffleButterfly(EmitContext& ctx, IR::Inst& inst, ScalarU32 value, ScalarU32 index,
+                          const IR::Value& clamp, const IR::Value& segmentation_mask) {
+    Shuffle(ctx, inst, value, index, clamp, segmentation_mask, "XOR");
+}
+
+void EmitFSwizzleAdd(EmitContext& ctx, IR::Inst& inst, ScalarF32 op_a, ScalarF32 op_b,
+                     ScalarU32 swizzle) {
+    const auto ret{ctx.reg_alloc.Define(inst)};
+    ctx.Add("AND.U RC.z,{}.threadid,3;"
+            "SHL.U RC.z,RC.z,1;"
+            "SHR.U RC.z,{},RC.z;"
+            "AND.U RC.z,RC.z,3;"
+            "MUL.F RC.x,{},FSWZA[RC.z];"
+            "MUL.F RC.y,{},FSWZB[RC.z];"
+            "ADD.F {}.x,RC.x,RC.y;",
+            ctx.stage_name, swizzle, op_a, op_b, ret);
+}
+
+void EmitDPdxFine(EmitContext& ctx, IR::Inst& inst, ScalarF32 p) {
+    if (ctx.profile.support_derivative_control) {
+        ctx.Add("DDX.FINE {}.x,{};", inst, p);
+    } else {
+        LOG_WARNING(Shader_GLASM, "Fine derivatives not supported by device");
+        ctx.Add("DDX {}.x,{};", inst, p);
+    }
+}
+
+void EmitDPdyFine(EmitContext& ctx, IR::Inst& inst, ScalarF32 p) {
+    if (ctx.profile.support_derivative_control) {
+        ctx.Add("DDY.FINE {}.x,{};", inst, p);
+    } else {
+        LOG_WARNING(Shader_GLASM, "Fine derivatives not supported by device");
+        ctx.Add("DDY {}.x,{};", inst, p);
+    }
+}
+
+void EmitDPdxCoarse(EmitContext& ctx, IR::Inst& inst, ScalarF32 p) {
+    if (ctx.profile.support_derivative_control) {
+        ctx.Add("DDX.COARSE {}.x,{};", inst, p);
+    } else {
+        LOG_WARNING(Shader_GLASM, "Coarse derivatives not supported by device");
+        ctx.Add("DDX {}.x,{};", inst, p);
+    }
+}
+
+void EmitDPdyCoarse(EmitContext& ctx, IR::Inst& inst, ScalarF32 p) {
+    if (ctx.profile.support_derivative_control) {
+        ctx.Add("DDY.COARSE {}.x,{};", inst, p);
+    } else {
+        LOG_WARNING(Shader_GLASM, "Coarse derivatives not supported by device");
+        ctx.Add("DDY {}.x,{};", inst, p);
+    }
+}
+
+} // namespace Shader::Backend::GLASM