1 files changed, 346 insertions, 0 deletions
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
new file mode 100644
index 000000000..02c9dc6d7
--- /dev/null
+++ b/src/shader_recompiler/backend/glasm/emit_glasm_context_get_set.cpp
@@ -0,0 +1,346 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <string_view>
+
+#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"
+#include "shader_recompiler/shader_info.h"
+
+namespace Shader::Backend::GLASM {
+namespace {
+void GetCbuf(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset,
+             std::string_view size) {
+    if (!binding.IsImmediate()) {
+        throw NotImplementedException("Indirect constant buffer loading");
+    }
+    const Register ret{ctx.reg_alloc.Define(inst)};
+    if (offset.type == Type::U32) {
+        // Avoid reading arrays out of bounds, matching hardware's behavior
+        if (offset.imm_u32 >= 0x10'000) {
+            ctx.Add("MOV.S {},0;", ret);
+            return;
+        }
+    }
+    ctx.Add("LDC.{} {},c{}[{}];", size, ret, binding.U32(), offset);
+}
+
+bool IsInputArray(Stage stage) {
+    return stage == Stage::Geometry || stage == Stage::TessellationControl ||
+           stage == Stage::TessellationEval;
+}
+
+std::string VertexIndex(EmitContext& ctx, ScalarU32 vertex) {
+    return IsInputArray(ctx.stage) ? fmt::format("[{}]", vertex) : "";
+}
+
+u32 TexCoordIndex(IR::Attribute attr) {
+    return (static_cast<u32>(attr) - static_cast<u32>(IR::Attribute::FixedFncTexture0S)) / 4;
+}
+} // Anonymous namespace
+
+void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "U8");
+}
+
+void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "S8");
+}
+
+void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "U16");
+}
+
+void EmitGetCbufS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "S16");
+}
+
+void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "U32");
+}
+
+void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "F32");
+}
+
+void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
+                      ScalarU32 offset) {
+    GetCbuf(ctx, inst, binding, offset, "U32X2");
+}
+
+void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr, ScalarU32 vertex) {
+    const u32 element{static_cast<u32>(attr) % 4};
+    const char swizzle{"xyzw"[element]};
+    if (IR::IsGeneric(attr)) {
+        const u32 index{IR::GenericAttributeIndex(attr)};
+        ctx.Add("MOV.F {}.x,in_attr{}{}[0].{};", inst, index, VertexIndex(ctx, vertex), swizzle);
+        return;
+    }
+    if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture9Q) {
+        const u32 index{TexCoordIndex(attr)};
+        ctx.Add("MOV.F {}.x,{}.texcoord[{}].{};", inst, ctx.attrib_name, index, swizzle);
+        return;
+    }
+    switch (attr) {
+    case IR::Attribute::PrimitiveId:
+        ctx.Add("MOV.S {}.x,primitive.id;", inst);
+        break;
+    case IR::Attribute::PositionX:
+    case IR::Attribute::PositionY:
+    case IR::Attribute::PositionZ:
+    case IR::Attribute::PositionW:
+        if (IsInputArray(ctx.stage)) {
+            ctx.Add("MOV.F {}.x,vertex_position{}.{};", inst, VertexIndex(ctx, vertex), swizzle);
+        } else {
+            ctx.Add("MOV.F {}.x,{}.position.{};", inst, ctx.attrib_name, swizzle);
+        }
+        break;
+    case IR::Attribute::ColorFrontDiffuseR:
+    case IR::Attribute::ColorFrontDiffuseG:
+    case IR::Attribute::ColorFrontDiffuseB:
+    case IR::Attribute::ColorFrontDiffuseA:
+        ctx.Add("MOV.F {}.x,{}.color.{};", inst, ctx.attrib_name, swizzle);
+        break;
+    case IR::Attribute::PointSpriteS:
+    case IR::Attribute::PointSpriteT:
+        ctx.Add("MOV.F {}.x,{}.pointcoord.{};", inst, ctx.attrib_name, swizzle);
+        break;
+    case IR::Attribute::TessellationEvaluationPointU:
+    case IR::Attribute::TessellationEvaluationPointV:
+        ctx.Add("MOV.F {}.x,vertex.tesscoord.{};", inst, swizzle);
+        break;
+    case IR::Attribute::InstanceId:
+        ctx.Add("MOV.S {}.x,{}.instance;", inst, ctx.attrib_name);
+        break;
+    case IR::Attribute::VertexId:
+        ctx.Add("MOV.S {}.x,{}.id;", inst, ctx.attrib_name);
+        break;
+    case IR::Attribute::FrontFace:
+        ctx.Add("CMP.S {}.x,{}.facing.x,0,-1;", inst, ctx.attrib_name);
+        break;
+    default:
+        throw NotImplementedException("Get attribute {}", attr);
+    }
+}
+
+void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, ScalarF32 value,
+                      [[maybe_unused]] ScalarU32 vertex) {
+    const u32 element{static_cast<u32>(attr) % 4};
+    const char swizzle{"xyzw"[element]};
+    if (IR::IsGeneric(attr)) {
+        const u32 index{IR::GenericAttributeIndex(attr)};
+        ctx.Add("MOV.F out_attr{}[0].{},{};", index, swizzle, value);
+        return;
+    }
+    if (attr >= IR::Attribute::FixedFncTexture0S && attr <= IR::Attribute::FixedFncTexture9R) {
+        const u32 index{TexCoordIndex(attr)};
+        ctx.Add("MOV.F result.texcoord[{}].{},{};", index, swizzle, value);
+        return;
+    }
+    switch (attr) {
+    case IR::Attribute::Layer:
+        if (ctx.stage == Stage::Geometry || ctx.profile.support_viewport_index_layer_non_geometry) {
+            ctx.Add("MOV.F result.layer.x,{};", value);
+        } else {
+            LOG_WARNING(Shader_GLASM,
+                        "Layer stored outside of geometry shader not supported by device");
+        }
+        break;
+    case IR::Attribute::ViewportIndex:
+        if (ctx.stage == Stage::Geometry || ctx.profile.support_viewport_index_layer_non_geometry) {
+            ctx.Add("MOV.F result.viewport.x,{};", value);
+        } else {
+            LOG_WARNING(Shader_GLASM,
+                        "Viewport stored outside of geometry shader not supported by device");
+        }
+        break;
+    case IR::Attribute::ViewportMask:
+        // NV_viewport_array2 is required to access result.viewportmask, regardless of shader stage.
+        if (ctx.profile.support_viewport_index_layer_non_geometry) {
+            ctx.Add("MOV.F result.viewportmask[0].x,{};", value);
+        } else {
+            LOG_WARNING(Shader_GLASM, "Device does not support storing to ViewportMask");
+        }
+        break;
+    case IR::Attribute::PointSize:
+        ctx.Add("MOV.F result.pointsize.x,{};", value);
+        break;
+    case IR::Attribute::PositionX:
+    case IR::Attribute::PositionY:
+    case IR::Attribute::PositionZ:
+    case IR::Attribute::PositionW:
+        ctx.Add("MOV.F result.position.{},{};", swizzle, value);
+        break;
+    case IR::Attribute::ColorFrontDiffuseR:
+    case IR::Attribute::ColorFrontDiffuseG:
+    case IR::Attribute::ColorFrontDiffuseB:
+    case IR::Attribute::ColorFrontDiffuseA:
+        ctx.Add("MOV.F result.color.{},{};", swizzle, value);
+        break;
+    case IR::Attribute::ColorFrontSpecularR:
+    case IR::Attribute::ColorFrontSpecularG:
+    case IR::Attribute::ColorFrontSpecularB:
+    case IR::Attribute::ColorFrontSpecularA:
+        ctx.Add("MOV.F result.color.secondary.{},{};", swizzle, value);
+        break;
+    case IR::Attribute::ColorBackDiffuseR:
+    case IR::Attribute::ColorBackDiffuseG:
+    case IR::Attribute::ColorBackDiffuseB:
+    case IR::Attribute::ColorBackDiffuseA:
+        ctx.Add("MOV.F result.color.back.{},{};", swizzle, value);
+        break;
+    case IR::Attribute::ColorBackSpecularR:
+    case IR::Attribute::ColorBackSpecularG:
+    case IR::Attribute::ColorBackSpecularB:
+    case IR::Attribute::ColorBackSpecularA:
+        ctx.Add("MOV.F result.color.back.secondary.{},{};", swizzle, value);
+        break;
+    case IR::Attribute::FogCoordinate:
+        ctx.Add("MOV.F result.fogcoord.x,{};", value);
+        break;
+    case IR::Attribute::ClipDistance0:
+    case IR::Attribute::ClipDistance1:
+    case IR::Attribute::ClipDistance2:
+    case IR::Attribute::ClipDistance3:
+    case IR::Attribute::ClipDistance4:
+    case IR::Attribute::ClipDistance5:
+    case IR::Attribute::ClipDistance6:
+    case IR::Attribute::ClipDistance7: {
+        const u32 index{static_cast<u32>(attr) - static_cast<u32>(IR::Attribute::ClipDistance0)};
+        ctx.Add("MOV.F result.clip[{}].x,{};", index, value);
+        break;
+    }
+    default:
+        throw NotImplementedException("Set attribute {}", attr);
+    }
+}
+
+void EmitGetAttributeIndexed(EmitContext& ctx, IR::Inst& inst, ScalarS32 offset, ScalarU32 vertex) {
+    // RC.x = base_index
+    // RC.y = masked_index
+    // RC.z = compare_index
+    ctx.Add("SHR.S RC.x,{},2;"
+            "AND.S RC.y,RC.x,3;"
+            "SHR.S RC.z,{},4;",
+            offset, offset);
+
+    const Register ret{ctx.reg_alloc.Define(inst)};
+    u32 num_endifs{};
+    const auto read{[&](u32 compare_index, const std::array<std::string, 4>& values) {
+        ++num_endifs;
+        ctx.Add("SEQ.S.CC RC.w,RC.z,{};" // compare_index
+                "IF NE.w;"
+                // X
+                "SEQ.S.CC RC.w,RC.y,0;"
+                "IF NE.w;"
+                "MOV {}.x,{};"
+                "ELSE;"
+                // Y
+                "SEQ.S.CC RC.w,RC.y,1;"
+                "IF NE.w;"
+                "MOV {}.x,{};"
+                "ELSE;"
+                // Z
+                "SEQ.S.CC RC.w,RC.y,2;"
+                "IF NE.w;"
+                "MOV {}.x,{};"
+                "ELSE;"
+                // W
+                "MOV {}.x,{};"
+                "ENDIF;"
+                "ENDIF;"
+                "ENDIF;"
+                "ELSE;",
+                compare_index, ret, values[0], ret, values[1], ret, values[2], ret, values[3]);
+    }};
+    const auto read_swizzled{[&](u32 compare_index, std::string_view value) {
+        const std::array values{fmt::format("{}.x", value), fmt::format("{}.y", value),
+                                fmt::format("{}.z", value), fmt::format("{}.w", value)};
+        read(compare_index, values);
+    }};
+    if (ctx.info.loads.AnyComponent(IR::Attribute::PositionX)) {
+        const u32 index{static_cast<u32>(IR::Attribute::PositionX)};
+        if (IsInputArray(ctx.stage)) {
+            read_swizzled(index, fmt::format("vertex_position{}", VertexIndex(ctx, vertex)));
+        } else {
+            read_swizzled(index, fmt::format("{}.position", ctx.attrib_name));
+        }
+    }
+    for (u32 index = 0; index < static_cast<u32>(IR::NUM_GENERICS); ++index) {
+        if (!ctx.info.loads.Generic(index)) {
+            continue;
+        }
+        read_swizzled(index, fmt::format("in_attr{}{}[0]", index, VertexIndex(ctx, vertex)));
+    }
+    for (u32 i = 0; i < num_endifs; ++i) {
+        ctx.Add("ENDIF;");
+    }
+}
+
+void EmitSetAttributeIndexed([[maybe_unused]] EmitContext& ctx, [[maybe_unused]] ScalarU32 offset,
+                             [[maybe_unused]] ScalarF32 value, [[maybe_unused]] ScalarU32 vertex) {
+    throw NotImplementedException("GLASM instruction");
+}
+
+void EmitGetPatch(EmitContext& ctx, IR::Inst& inst, IR::Patch patch) {
+    if (!IR::IsGeneric(patch)) {
+        throw NotImplementedException("Non-generic patch load");
+    }
+    const u32 index{IR::GenericPatchIndex(patch)};
+    const u32 element{IR::GenericPatchElement(patch)};
+    const char swizzle{"xyzw"[element]};
+    const std::string_view out{ctx.stage == Stage::TessellationControl ? ".out" : ""};
+    ctx.Add("MOV.F {},primitive{}.patch.attrib[{}].{};", inst, out, index, swizzle);
+}
+
+void EmitSetPatch(EmitContext& ctx, IR::Patch patch, ScalarF32 value) {
+    if (IR::IsGeneric(patch)) {
+        const u32 index{IR::GenericPatchIndex(patch)};
+        const u32 element{IR::GenericPatchElement(patch)};
+        ctx.Add("MOV.F result.patch.attrib[{}].{},{};", index, "xyzw"[element], value);
+        return;
+    }
+    switch (patch) {
+    case IR::Patch::TessellationLodLeft:
+    case IR::Patch::TessellationLodRight:
+    case IR::Patch::TessellationLodTop:
+    case IR::Patch::TessellationLodBottom: {
+        const u32 index{static_cast<u32>(patch) - u32(IR::Patch::TessellationLodLeft)};
+        ctx.Add("MOV.F result.patch.tessouter[{}].x,{};", index, value);
+        break;
+    }
+    case IR::Patch::TessellationLodInteriorU:
+        ctx.Add("MOV.F result.patch.tessinner[0].x,{};", value);
+        break;
+    case IR::Patch::TessellationLodInteriorV:
+        ctx.Add("MOV.F result.patch.tessinner[1].x,{};", value);
+        break;
+    default:
+        throw NotImplementedException("Patch {}", patch);
+    }
+}
+
+void EmitSetFragColor(EmitContext& ctx, u32 index, u32 component, ScalarF32 value) {
+    ctx.Add("MOV.F frag_color{}.{},{};", index, "xyzw"[component], value);
+}
+
+void EmitSetSampleMask(EmitContext& ctx, ScalarS32 value) {
+    ctx.Add("MOV.S result.samplemask.x,{};", value);
+}
+
+void EmitSetFragDepth(EmitContext& ctx, ScalarF32 value) {
+    ctx.Add("MOV.F result.depth.z,{};", value);
+}
+
+void EmitLoadLocal(EmitContext& ctx, IR::Inst& inst, ScalarU32 word_offset) {
+    ctx.Add("MOV.U {},lmem[{}].x;", inst, word_offset);
+}
+
+void EmitWriteLocal(EmitContext& ctx, ScalarU32 word_offset, ScalarU32 value) {
+    ctx.Add("MOV.U lmem[{}].x,{};", word_offset, value);
+}
+
+} // namespace Shader::Backend::GLASM