Bring heterogeneous-hello-world back up to date. (#1935)

* Bring heterogeneous-hello-world back up to date.

* Reintroduced heterogeneous-hello-world into the premake

* No longer uses compiled bytecode for entry point, instead a loadModule
call is hardocoded with the slang file name.

* Entry point is, similarly, hardcoded for now.

* Added a bypass to slang-legalize-types for an unneeded GPUForeach check

* Run premake and change to relative path

* Removed experimental and added README

Co-authored-by: Yong He <yonghe@outlook.com>

6 files changed, 17 insertions, 16 deletions

diff --git a/source/slang/slang-ast-stmt.h b/source/slang/slang-ast-stmt.h
index 20f9e270e..2edc844c6 100644
--- a/source/slang/slang-ast-stmt.h
+++ b/source/slang/slang-ast-stmt.h
@@ -125,7 +125,7 @@ class GpuForeachStmt : public ScopeStmt
 {
     SLANG_AST_CLASS(GpuForeachStmt)
 
-    Expr* renderer = nullptr;
+    Expr* device = nullptr;
     Expr* gridDims = nullptr;
     VarDecl* dispatchThreadID = nullptr;
     Expr* kernelCall = nullptr;
diff --git a/source/slang/slang-check-stmt.cpp b/source/slang/slang-check-stmt.cpp
index 9a5aee15c..6f8ed9ff5 100644
--- a/source/slang/slang-check-stmt.cpp
+++ b/source/slang/slang-check-stmt.cpp
@@ -290,7 +290,7 @@ namespace Slang
 
     void SemanticsStmtVisitor::visitGpuForeachStmt(GpuForeachStmt*stmt)
     {
-        stmt->renderer = CheckExpr(stmt->renderer);
+        stmt->device = CheckExpr(stmt->device);
         stmt->gridDims = CheckExpr(stmt->gridDims);
         ensureDeclBase(stmt->dispatchThreadID, DeclCheckState::Checked);
         WithOuterStmt subContext(this, stmt);
diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index 60b86b827..f71406261 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -2710,22 +2710,20 @@ void CPPSourceEmitter::emitModuleImpl(IRModule* module, DiagnosticSink* sink)
                         // Emit a wrapper function for calling the shader blob
                         m_writer->emit("void ");
                         m_writer->emit(entryPointName);
-                        m_writer->emit("_wrapper(gfx_Renderer_0* renderer, Vector<uint32_t, 3> gridDims, \n");
+                        m_writer->emit("_wrapper(gfx_Device_0* device, Vector<uint32_t, 3> gridDims, \n");
                         m_writer->emit("\tRWStructuredBuffer<float> buffer)\n{");
-                        m_writer->emit("\n\tgfx_ShaderProgram_0* shaderProgram = loadShaderProgram_0(renderer, __");
+                       /* m_writer->emit("\n\tgfx_ShaderProgram_0* shaderProgram = loadShaderProgram_0(device, __");
                         m_writer->emit(entryPointName);
                         m_writer->emit(", __");
                         m_writer->emit(entryPointName);
-                        m_writer->emit("Size);");
-                        m_writer->emit("\n\tgfx_DescriptorSetLayout_0* setLayout = buildDescriptorSetLayout_0(renderer);");
-                        m_writer->emit("\n\tgfx_PipelineLayout_0* pipelineLayout = buildPipeline_0(renderer, setLayout);");
-                        m_writer->emit("\n\tgfx_DescriptorSet_0* descriptorSet = ");
-                        m_writer->emit("buildDescriptorSet_0(renderer, setLayout, unconvertBuffer_0(buffer));");
+                        m_writer->emit("Size);");*/
+                        m_writer->emit("\n\tgfx_ShaderProgram_0* shaderProgram = loadShaderProgram_0(device);");
+                        m_writer->emit("\n\tgfx_TransientResourceHeap_0* transientHeap = buildTransientHeap_0(device);");
                         m_writer->emit("\n\tgfx_PipelineState_0* pipelineState = ");
-                        m_writer->emit("buildPipelineState_0(shaderProgram, renderer, pipelineLayout);");
-
-                        m_writer->emit("\n\tdispatchComputation_0(renderer, pipelineState, pipelineLayout, ");
-                        m_writer->emit("descriptorSet, gridDims.x, gridDims.y, gridDims.z);");
+                        m_writer->emit("buildPipelineState_0(device, shaderProgram);");
+                        m_writer->emit("\n\tgfx_ResourceView_0* bufferView = createBufferView_0(device, unconvertBuffer_0(buffer));");
+                        m_writer->emit("\n\tdispatchComputation_0(device, transientHeap, pipelineState, ");
+                        m_writer->emit("bufferView, gridDims.x, gridDims.y, gridDims.z);");
                         m_writer->emit("\n}\n");
                     }
                 }
diff --git a/source/slang/slang-ir-legalize-types.cpp b/source/slang/slang-ir-legalize-types.cpp
index d88166f83..416df6c77 100644
--- a/source/slang/slang-ir-legalize-types.cpp
+++ b/source/slang/slang-ir-legalize-types.cpp
@@ -1668,6 +1668,9 @@ static LegalVal legalizeInst(
         return legalizeConstruct(context, type);
     case kIROp_undefined:
         return LegalVal();
+    case kIROp_GpuForeach:
+        // This case should only happen when compiling for a target that does not support GpuForeach
+        return LegalVal();
     default:
         // TODO: produce a user-visible diagnostic here
         SLANG_UNEXPECTED("non-simple operand(s)!");
diff --git a/source/slang/slang-lower-to-ir.cpp b/source/slang/slang-lower-to-ir.cpp
index c1738887d..cde9fcc70 100644
--- a/source/slang/slang-lower-to-ir.cpp
+++ b/source/slang/slang-lower-to-ir.cpp
@@ -4345,13 +4345,13 @@ struct StmtLoweringVisitor : StmtVisitor<StmtLoweringVisitor>
         auto builder = getBuilder();
         startBlockIfNeeded(stmt);
 
-        auto renderer = getSimpleVal(context, lowerRValueExpr(context, stmt->renderer));
+        auto device = getSimpleVal(context, lowerRValueExpr(context, stmt->device));
         auto gridDims = getSimpleVal(context, lowerRValueExpr(context, stmt->gridDims));
 
         List<IRInst*> irArgs;
         if (auto callExpr = as<InvokeExpr>(stmt->kernelCall))
         {
-            irArgs.add(renderer);
+            irArgs.add(device);
             irArgs.add(gridDims);
             auto fref = getSimpleVal(context, lowerRValueExpr(context, callExpr->functionExpr));
             irArgs.add(fref);
diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index 7bb933b39..d9bbaaace 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -3745,7 +3745,7 @@ namespace Slang
         parser->FillPosition(stmt);
         parser->ReadToken("__GPU_FOREACH");
         parser->ReadToken(TokenType::LParent);
-        stmt->renderer = parser->ParseArgExpr();
+        stmt->device = parser->ParseArgExpr();
         parser->ReadToken(TokenType::Comma);
         stmt->gridDims = parser->ParseArgExpr();