Implement client-side WebGPU API with command buffer recording

src/client/classes.hpp

@@ -38,12 +38,29 @@ namespace builtin_scene
 /**
  * @namespace client_graphics
  * The `client_graphics` namespace contains classes related to graphics rendering,
- * such as `WebGLContext` and `WebGL2Context`.
+ * such as `WebGLContext`, `WebGL2Context`, and `WebGPUContext`.
  */
 namespace client_graphics
 {
   class WebGLContext;  // Represents a WebGL 1.0 rendering context
   class WebGL2Context; // Represents a WebGL 2.0 rendering context
+
+  // WebGPU classes (split into individual files)
+  class WebGPUContextAttributes; // Context configuration attributes
+  class WebGPUAdapter;           // Represents a WebGPU adapter
+  class WebGPUDevice;            // Represents a WebGPU device
+  class WebGPUQueue;             // Represents a WebGPU queue
+  class WebGPUContext;           // Main WebGPU context interface
+  class WebGPUCommandEncoder;    // Records GPU commands
+  class WebGPUCommandBuffer;     // Container for recorded commands
+  class WebGPURenderPassEncoder; // Records render pass commands
+
+  // WebGPU resource classes (placeholders)
+  class WebGPUBuffer;          // Represents a WebGPU buffer
+  class WebGPUTexture;         // Represents a WebGPU texture
+  class WebGPUBindGroup;       // Represents a WebGPU bind group
+  class WebGPURenderPipeline;  // Represents a WebGPU render pipeline
+  class WebGPUComputePipeline; // Represents a WebGPU compute pipeline
 }
 
 /**

src/client/graphics/webgpu_adapter.cpp

@@ -0,0 +1,50 @@
+#include "./webgpu_adapter.hpp"
+#include "./webgpu_device.hpp"
+
+#include <iostream>
+#include <stdexcept>
+
+namespace client_graphics
+{
+  using namespace std;
+
+  // WebGPUAdapter implementation
+  WebGPUAdapter::WebGPUAdapter(const commandbuffers::GPUAdapterInfo &info)
+      : adapter_info_(info)
+      , features_()
+      , limits_()
+  {
+    // Initialize with default features and limits
+    // In a full implementation, these would be queried from the actual adapter
+  }
+
+  std::unique_ptr<WebGPUDevice> WebGPUAdapter::requestDevice(
+    std::optional<std::string> label,
+    const std::vector<std::string> &requiredFeatures,
+    const std::unordered_map<std::string, uint32_t> &requiredLimits)
+  {
+    // Validate required features
+    for (const auto &feature : requiredFeatures)
+    {
+      if (features_.find(feature) == features_.end())
+      {
+        // Feature not supported
+        return nullptr;
+      }
+    }
+
+    // Validate required limits
+    for (const auto &[limitName, requiredValue] : requiredLimits)
+    {
+      auto it = limits_.find(limitName);
+      if (it == limits_.end() || it->second < requiredValue)
+      {
+        // Limit not supported or insufficient
+        return nullptr;
+      }
+    }
+
+    // Create device with the requested configuration
+    return std::make_unique<WebGPUDevice>(adapter_info_, label);
+  }
+}

src/client/graphics/webgpu_adapter.hpp

@@ -0,0 +1,53 @@
+#pragma once
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <common/command_buffers/gpu/gpu_adapter.hpp>
+
+namespace client_graphics
+{
+  /**
+   * The `WebGPUAdapter` class represents a WebGPU adapter which provides information
+   * about the underlying graphics hardware and its capabilities.
+   */
+  class WebGPUAdapter
+  {
+  public:
+    WebGPUAdapter(const commandbuffers::GPUAdapterInfo &info);
+    ~WebGPUAdapter() = default;
+
+  public:
+    const commandbuffers::GPUAdapterInfo &info() const
+    {
+      return adapter_info_;
+    }
+    const commandbuffers::GPUSupportedFeatures &features() const
+    {
+      return features_;
+    }
+    const commandbuffers::GPUSupportedLimits &limits() const
+    {
+      return limits_;
+    }
+
+    /**
+     * Request a device from this adapter.
+     * @param label Optional label for the device
+     * @param requiredFeatures Features required by the device
+     * @param requiredLimits Limits required by the device
+     * @returns A WebGPU device or nullptr if device creation fails
+     */
+    std::unique_ptr<class WebGPUDevice> requestDevice(
+      std::optional<std::string> label = std::nullopt,
+      const std::vector<std::string> &requiredFeatures = {},
+      const std::unordered_map<std::string, uint32_t> &requiredLimits = {});
+
+  private:
+    commandbuffers::GPUAdapterInfo adapter_info_;
+    commandbuffers::GPUSupportedFeatures features_;
+    commandbuffers::GPUSupportedLimits limits_;
+  };
+}

src/client/graphics/webgpu_bind_group.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <string>
+#include <common/command_buffers/gpu/gpu_base.hpp>
+
+namespace client_graphics
+{
+  /**
+   * Represents a WebGPU bind group.
+   * This is a placeholder implementation for the client-side bind group interface.
+   */
+  class WebGPUBindGroup
+  {
+  public:
+    WebGPUBindGroup(std::string label = "WebGPUBindGroup")
+        : label_(std::move(label))
+        , id_(commandbuffers::GPUHandle("").id) // Generate unique ID
+    {
+    }
+
+    const std::string &label() const
+    {
+      return label_;
+    }
+    commandbuffers::GPUIdentifier id() const
+    {
+      return id_;
+    }
+
+  private:
+    std::string label_;
+    commandbuffers::GPUIdentifier id_;
+  };
+}

src/client/graphics/webgpu_buffer.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <string>
+#include <common/command_buffers/gpu/gpu_base.hpp>
+
+namespace client_graphics
+{
+  /**
+   * Represents a WebGPU buffer resource.
+   * This is a placeholder implementation for the client-side buffer interface.
+   */
+  class WebGPUBuffer
+  {
+  public:
+    WebGPUBuffer(std::string label = "WebGPUBuffer")
+        : label_(std::move(label))
+        , id_(commandbuffers::GPUHandle("").id) // Generate unique ID
+    {
+    }
+
+    const std::string &label() const
+    {
+      return label_;
+    }
+    commandbuffers::GPUIdentifier id() const
+    {
+      return id_;
+    }
+
+  private:
+    std::string label_;
+    commandbuffers::GPUIdentifier id_;
+  };
+}

src/client/graphics/webgpu_command_buffer.cpp

@@ -0,0 +1,36 @@
+#include "./webgpu_command_buffer.hpp"
+
+#include <iostream>
+
+namespace client_graphics
+{
+  using namespace std;
+
+  // WebGPUCommandBuffer implementation
+  WebGPUCommandBuffer::WebGPUCommandBuffer(std::optional<std::string> label)
+      : label_(label.value_or("WebGPUCommandBuffer"))
+  {
+  }
+
+  void WebGPUCommandBuffer::execute() const
+  {
+    // In the client-side implementation, this would typically transmit
+    // the recorded commands to the graphics server for execution.
+    // For now, we just log the execution for debugging purposes.
+
+    if (commands_.empty())
+    {
+      return;
+    }
+
+    // In a full implementation, this would serialize and send the commands
+    // to the server-side renderer via the command buffer system.
+    // Following the WebGL pattern in webgl_context.cpp
+
+    std::cout << "Executing WebGPU command buffer '" << label_
+              << "' with " << commands_.size() << " commands" << std::endl;
+
+    // Placeholder for command transmission logic
+    // This would follow the same pattern as WebGLContext::sendCommandBufferRequest()
+  }
+}

src/client/graphics/webgpu_command_buffer.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <memory>
+#include <optional>
+#include <string>
+#include <vector>
+
+#include <common/command_buffers/gpu/gpu_command_buffer.hpp>
+
+namespace client_graphics
+{
+  /**
+   * The `WebGPUCommandBuffer` class represents a recorded sequence of GPU commands.
+   * This is the client-side implementation that holds recorded commands for later submission.
+   */
+  class WebGPUCommandBuffer
+  {
+  public:
+    WebGPUCommandBuffer(std::optional<std::string> label = std::nullopt);
+    ~WebGPUCommandBuffer() = default;
+
+    // Non-copyable but movable
+    WebGPUCommandBuffer(const WebGPUCommandBuffer &) = delete;
+    WebGPUCommandBuffer &operator=(const WebGPUCommandBuffer &) = delete;
+    WebGPUCommandBuffer(WebGPUCommandBuffer &&) = default;
+    WebGPUCommandBuffer &operator=(WebGPUCommandBuffer &&) = default;
+
+  public:
+    const std::string &label() const
+    {
+      return label_;
+    }
+    bool isEmpty() const
+    {
+      return commands_.empty();
+    }
+    size_t commandCount() const
+    {
+      return commands_.size();
+    }
+
+    /**
+     * Execute the recorded commands. In the client-side implementation,
+     * this would typically transmit the commands to the server.
+     * For now, this is a placeholder for the command recording pattern.
+     */
+    void execute() const;
+
+  private:
+    friend class WebGPUCommandEncoder;
+    friend class WebGPURenderPassEncoder;
+
+    std::string label_;
+    std::vector<std::shared_ptr<commandbuffers::GPUCommand>> commands_;
+
+    /**
+     * Add a command to the command buffer.
+     * This follows the same pattern as the existing GPU command buffer implementation.
+     */
+    template <typename T, typename... Args>
+    void addCommand(Args &&...args)
+    {
+      auto command = std::make_shared<T>(std::forward<Args>(args)...);
+      commands_.push_back(command);
+    }
+  };
+}