Revert "feat(platform): Centralize platform-specific WebGPU code and improve shader composition"

This reverts commit 16c2cdce6ad1d89d3c537f2c2cff743449925125.

2 files changed, 1 insertions, 170 deletions

diff --git a/src/platform/platform.cc b/src/platform/platform.cc
index 2b8529a..29b3af3 100644
--- a/src/platform/platform.cc
+++ b/src/platform/platform.cc
@@ -5,7 +5,6 @@
 #include "platform/platform.h"
 #include "glfw3webgpu.h"
 #include <GLFW/glfw3.h>
-#include <cstdio>
 
 // --- Callbacks ---
 
@@ -129,88 +128,4 @@ WGPUSurface platform_create_wgpu_surface(WGPUInstance instance,
 
 double platform_get_time() {
   return glfwGetTime();
-}
-
-// --- WebGPU Request Helpers ---
-
-#if defined(DEMO_CROSS_COMPILE_WIN32)
-static void _platform_adapter_cb_win32(WGPURequestAdapterStatus status,
-                                       WGPUAdapter adapter, const char* message,
-                                       void* userdata) {
-  if (status == WGPURequestAdapterStatus_Success) {
-    *((WGPUAdapter*)userdata) = adapter;
-  } else {
-    printf("Request adapter failed: %s\n", message ? message : "Unknown");
-  }
-}
-
-void platform_wgpu_request_adapter(WGPUInstance instance,
-                                   const WGPURequestAdapterOptions* options,
-                                   WGPUAdapter* out_adapter) {
-  wgpuInstanceRequestAdapter(instance, options, _platform_adapter_cb_win32,
-                             out_adapter);
-}
-
-static void _platform_device_cb_win32(WGPURequestDeviceStatus status,
-                                      WGPUDevice device, const char* message,
-                                      void* userdata) {
-  if (status == WGPURequestDeviceStatus_Success) {
-    *((WGPUDevice*)userdata) = device;
-  } else {
-    printf("Request device failed: %s\n", message ? message : "Unknown");
-  }
-}
-
-void platform_wgpu_request_device(WGPUAdapter adapter,
-                                  const WGPUDeviceDescriptor* descriptor,
-                                  WGPUDevice* out_device) {
-  wgpuAdapterRequestDevice(adapter, descriptor, _platform_device_cb_win32,
-                           out_device);
-}
-
-#else
-
-static void _platform_adapter_cb_native(WGPURequestAdapterStatus status,
-                                        WGPUAdapter adapter,
-                                        WGPUStringView message, void* userdata,
-                                        void* userdata2) {
-  (void)userdata2;
-  if (status == WGPURequestAdapterStatus_Success) {
-    *((WGPUAdapter*)userdata) = adapter;
-  } else {
-    printf("Request adapter failed: %.*s\n", (int)message.length, message.data);
-  }
-}
-
-void platform_wgpu_request_adapter(WGPUInstance instance,
-                                   const WGPURequestAdapterOptions* options,
-                                   WGPUAdapter* out_adapter) {
-  WGPURequestAdapterCallbackInfo cb = {};
-  cb.mode = WGPUCallbackMode_WaitAnyOnly;
-  cb.callback = _platform_adapter_cb_native;
-  cb.userdata1 = out_adapter;
-  wgpuInstanceRequestAdapter(instance, options, cb);
-}
-
-static void _platform_device_cb_native(WGPURequestDeviceStatus status,
-                                       WGPUDevice device,
-                                       WGPUStringView message, void* userdata,
-                                       void* userdata2) {
-  (void)userdata2;
-  if (status == WGPURequestDeviceStatus_Success) {
-    *((WGPUDevice*)userdata) = device;
-  } else {
-    printf("Request device failed: %.*s\n", (int)message.length, message.data);
-  }
-}
-
-void platform_wgpu_request_device(WGPUAdapter adapter,
-                                  const WGPUDeviceDescriptor* descriptor,
-                                  WGPUDevice* out_device) {
-  WGPURequestDeviceCallbackInfo cb = {};
-  cb.mode = WGPUCallbackMode_WaitAnyOnly;
-  cb.callback = _platform_device_cb_native;
-  cb.userdata1 = out_device;
-  wgpuAdapterRequestDevice(adapter, descriptor, cb);
-}
-#endif
+}
\ No newline at end of file
diff --git a/src/platform/platform.h b/src/platform/platform.h
index ddea7af..0a98850 100644
--- a/src/platform/platform.h
+++ b/src/platform/platform.h
@@ -22,9 +22,6 @@
 #define WGPUCallbackMode_WaitAnyOnly 0
 
 typedef WGPUShaderModuleWGSLDescriptor WGPUShaderSourceWGSL;
-// Texture compatibility typedefs
-typedef WGPUImageCopyTexture WGPU_TEX_COPY_INFO;
-typedef WGPUTextureDataLayout WGPU_TEX_DATA_LAYOUT;
 
 static inline const char* str_view(const char* str) {
   return str;
@@ -42,44 +39,10 @@ platform_wgpu_set_error_callback(WGPUDevice device,
   wgpuDeviceSetUncapturedErrorCallback(device, callback, nullptr);
 }
 
-// Helper to create a WGPUShaderModuleDescriptor with platform-specific chain
-static inline WGPUShaderModuleDescriptor platform_create_shader_module_descriptor(
-    const char* shader_code) {
-  WGPUShaderSourceWGSL* wgsl_src = new WGPUShaderSourceWGSL();
-  wgsl_src->chain.sType = WGPUSType_ShaderSourceWGSL;
-  wgsl_src->code = str_view(shader_code);
-
-  WGPUShaderModuleDescriptor shader_desc = {};
-  shader_desc.nextInChain = &wgsl_src->chain;
-  shader_desc.label = label_view(nullptr); // Use label_view for cross-platform compatibility
-
-  return shader_desc;
-}
-
-// Macro to set the depth stencil state for render pipelines
-#define PLATFORM_SET_PIPELINE_DEPTH_STENCIL(pipeline_desc, depth_stencil_state_ptr) \
-  _Pragma("clang diagnostic push") \
-  _Pragma("clang diagnostic ignored \"-Wuninitialized\"") \
-  _Pragma("clang diagnostic ignored \"-Wmissing-field-initializers\"") \
-  do { \
-    if (depth_stencil_state_ptr) { \
-      if (defined(DEMO_CROSS_COMPILE_WIN32)) { \
-        (pipeline_desc).depthStencilState = *(depth_stencil_state_ptr); \
-      } else { \
-        (pipeline_desc).depthStencil = (depth_stencil_state_ptr); \
-      } \
-    } \
-  } while (0) \
-  _Pragma("clang diagnostic pop")
-
 #else
 #include <webgpu.h>
 #include <wgpu.h>
 
-// Texture compatibility typedefs
-typedef WGPUTexelCopyTextureInfo WGPU_TEX_COPY_INFO;
-typedef WGPUTexelCopyBufferLayout WGPU_TEX_DATA_LAYOUT;
-
 static inline WGPUStringView str_view(const char* str) {
   if (!str)
     return {nullptr, 0};
@@ -106,55 +69,8 @@ platform_wgpu_set_error_callback(WGPUDevice device,
   // Handled in descriptor for new API, but provided for compatibility if needed
   // elsewhere
 }
-
-// Helper to create a WGPUShaderModuleDescriptor with platform-specific chain
-static inline WGPUShaderModuleDescriptor platform_create_shader_module_descriptor(
-    const char* shader_code) {
-  WGPUShaderModuleDescriptor shader_desc = {};
-  // Need to dynamically allocate wgsl_src, as it needs to persist for the lifetime of shader_desc.
-  WGPUShaderSourceWGSL* wgsl_src = new WGPUShaderSourceWGSL(); 
-  wgsl_src->chain.sType = WGPUSType_ShaderSourceWGSL;
-  wgsl_src->code = str_view(shader_code);
-
-  shader_desc.nextInChain = &wgsl_src->chain;
-  shader_desc.label = label_view(nullptr);
-  return shader_desc;
-}
-
-// Macro to set the depth stencil state for render pipelines
-#define PLATFORM_SET_PIPELINE_DEPTH_STENCIL(pipeline_desc, depth_stencil_state_ptr) \
-  do { \
-    (pipeline_desc).depthStencil = (depth_stencil_state_ptr); \
-  } while (0)
 #endif
 
-// Helper to extract error message from platform-specific string type
-static inline const char* platform_wgpu_get_error_message(
-#if defined(DEMO_CROSS_COMPILE_WIN32)
-    const char* message
-#else
-    WGPUStringView message
-#endif
-) {
-#if defined(DEMO_CROSS_COMPILE_WIN32)
-  return message ? message : "Unknown";
-#else
-  // Warning: Returns raw pointer to view data, typically not null-terminated!
-  // Use '%.*s' printf format with message.length if possible.
-  // This helper is best effort.
-  return message.data;
-#endif
-}
-
-// Platform-agnostic WebGPU request helpers
-void platform_wgpu_request_adapter(WGPUInstance instance,
-                                   const WGPURequestAdapterOptions* options,
-                                   WGPUAdapter* out_adapter);
-
-void platform_wgpu_request_device(WGPUAdapter adapter,
-                                  const WGPUDeviceDescriptor* descriptor,
-                                  WGPUDevice* out_device);
-
 // Forward declare GLFWwindow to avoid including the full header here.
 struct GLFWwindow;