Add back GFX smoke test (#8030)

* Fix `tools/gfx/gfx.slang`

* Add back `tests/cpu-program/gfx-smoke.slang`

Author: samestep

tests/cpu-program/gfx-smoke.slang

@@ -0,0 +1,101 @@
+//TEST:EXECUTABLE:
+import gfx;
+import slang;
+
+export __extern_cpp int main()
+{
+    gfx.DeviceDesc deviceDesc = {};
+    deviceDesc.deviceType = gfx.DeviceType.CPU;
+    Optional<gfx.IDevice> device;
+    gfx.gfxCreateDevice(&deviceDesc, device);
+    if (device == none)
+    {
+        printf("fail\n");
+        return -1;
+    }
+    
+    gfx.CommandQueueDesc queueDesc = {gfx::QueueType::Graphics};
+    queueDesc.type = gfx.QueueType.Graphics;
+    Optional<gfx.ICommandQueue> queue;
+    device.value.createCommandQueue(&queueDesc, queue);
+
+    gfx.ShaderProgramDesc2 programDesc = {};
+    NativeString s = R"(
+        [shader("compute")]
+        [numthreads(4, 1, 1)]
+        void computeMain(
+            uint3 sv_dispatchThreadID: SV_DispatchThreadID,
+            uniform RWStructuredBuffer<float> buffer
+            )
+        {
+            var input = buffer[sv_dispatchThreadID.x];
+            buffer[sv_dispatchThreadID.x] = sv_dispatchThreadID.x;
+        })";
+    programDesc.sourceData = s;
+    programDesc.sourceType = gfx.ShaderModuleSourceType.SlangSource;
+    programDesc.sourceDataSize = s.length;
+    programDesc.entryPointCount = 1;
+    NativeString entryPointName = "computeMain";
+    programDesc.entryPointNames = &entryPointName;
+    Optional<gfx.IShaderProgram> program;
+    Optional<slang.ISlangBlob> diagBlob;
+    device.value.createProgram2(&programDesc, program, diagBlob);
+
+    Optional<gfx.IPipelineState> pipeline;
+    gfx.ComputePipelineStateDesc pipelineDesc;
+    pipelineDesc.program = NativeRef<gfx.IShaderProgram>(program.value);
+    device.value.createComputePipelineState(&pipelineDesc, pipeline);
+
+    Optional<gfx.ITransientResourceHeap> transientHeap;
+    gfx.TransientResourceHeapDesc transientHeapDesc;
+    transientHeapDesc.constantBufferDescriptorCount = 64;
+    transientHeapDesc.constantBufferSize = 1024;
+    transientHeapDesc.srvDescriptorCount = 1024;
+    transientHeapDesc.uavDescriptorCount = 1024;
+    transientHeapDesc.samplerDescriptorCount = 256;
+    transientHeapDesc.accelerationStructureDescriptorCount = 32;
+    device.value.createTransientResourceHeap(&transientHeapDesc, transientHeap);
+
+    Optional<gfx.IBufferResource> buffer;
+    gfx.BufferResourceDesc bufferDesc = {};
+    bufferDesc.memoryType = gfx.MemoryType.DeviceLocal;
+    bufferDesc.allowedStates.add(gfx.ResourceState.UnorderedAccess);
+    bufferDesc.defaultState = gfx.ResourceState.UnorderedAccess;
+    bufferDesc.elementSize = 4;
+    bufferDesc.sizeInBytes = 256;
+    bufferDesc.type = gfx.ResourceType.Buffer;
+    device.value.createBufferResource(&bufferDesc, nullptr, buffer);
+
+    Optional<gfx.IResourceView> bufferView;
+    gfx.ResourceViewDesc viewDesc;
+    viewDesc.type = gfx.ResourceViewType.UnorderedAccess;
+    device.value.createBufferView(buffer.value, none, &viewDesc, bufferView);
+
+    Optional<gfx.ICommandBuffer> commandBuffer;
+    transientHeap.value.createCommandBuffer(commandBuffer);
+    Optional<gfx.IComputeCommandEncoder> encoder;
+    commandBuffer.value.encodeComputeCommands(encoder);
+    Optional<gfx.IShaderObject> rootObject;
+    encoder.value.bindPipeline(pipeline.value, rootObject);
+    Optional<gfx.IShaderObject> entryPointObject;
+    rootObject.value.getEntryPoint(0, entryPointObject);
+    gfx.ShaderOffset offset = {};
+    entryPointObject.value.setResource(&offset, bufferView.value);
+    encoder.value.dispatchCompute(1, 1, 1);
+    encoder.value.endEncoding();
+    commandBuffer.value.close();
+    
+    NativeRef<gfx.ICommandBuffer> commandBufferRef = NativeRef<gfx.ICommandBuffer>(commandBuffer.value);
+    queue.value.executeCommandBuffers(1, &commandBufferRef, none, 0);
+    queue.value.waitOnHost();
+
+    Optional<slang.ISlangBlob> blob;
+    device.value.readBufferResource(buffer.value, 0, 16, blob);
+
+    for (int i = 0; i < 4; i++)
+    {
+        float val = ((float *)blob.value.getBufferPointer())[i];
+        printf("%.1f\n", val);
+    }
+    return 0;
+}

tools/gfx/gfx.slang

@@ -12,7 +12,7 @@ public typedef int GfxCount;
 public typedef intptr_t Size;
 public typedef intptr_t Offset;
 
-public const uint64_t kTimeoutInfinite = 0xFFFFFFFFFFFFFFFF;
+public static const uint64_t kTimeoutInfinite = 0xFFFFFFFFFFFFFFFF;
 
 public enum class StructType
 {