1 files changed, 21 insertions, 17 deletions

diff --git a/src/gpu/gpu.h b/src/gpu/gpu.h
index 41eeb29..d6c0255 100644
--- a/src/gpu/gpu.h
+++ b/src/gpu/gpu.h
@@ -1,27 +1,23 @@
 // This file is part of the 64k demo project.
-// It defines the public interface for the GPU rendering system.
-// Coordinates WebGPU lifecycle and draw calls.
+// GPU rendering system interface.
 
 #pragma once
 
 #include "platform/platform.h"
 
-struct PlatformState; // Forward declaration
+struct PlatformState;
 
-// GPU context bundling device, queue, and surface format
 struct GpuContext {
   WGPUDevice device;
   WGPUQueue queue;
   WGPUTextureFormat format;
 };
 
-// Basic wrapper for WebGPU buffers
 struct GpuBuffer {
   WGPUBuffer buffer;
   size_t size;
 };
 
-// Encapsulates a compute operation
 struct ComputePass {
   WGPUComputePipeline pipeline;
   WGPUBindGroup bind_group;
@@ -30,7 +26,6 @@ struct ComputePass {
   uint32_t workgroup_size_z;
 };
 
-// Encapsulates a render operation
 struct RenderPass {
   WGPURenderPipeline pipeline;
   WGPUBindGroup bind_group;
@@ -48,33 +43,35 @@ WGPUSurface gpu_get_surface();
 
 const GpuContext* gpu_get_context();
 
-// Placeholder for GPU performance capture.
-// This define can be controlled via CMake to conditionally enable profiling
-// code. #define ENABLE_GPU_PERF_CAPTURE
-
-// Helper functions (exposed for internal/future use)
 struct ResourceBinding {
   GpuBuffer buffer;
-  WGPUBufferBindingType type; // e.g., WGPUBufferBindingType_Uniform,
-                              // WGPUBufferBindingType_Storage
+  WGPUBufferBindingType type;
 };
 
-// Cross-platform helper for color attachment initialization
 inline void gpu_init_color_attachment(WGPURenderPassColorAttachment& attachment,
                                       WGPUTextureView view) {
   attachment.view = view;
   attachment.loadOp = WGPULoadOp_Clear;
   attachment.storeOp = WGPUStoreOp_Store;
   attachment.clearValue = {0.0f, 0.0f, 0.0f, 1.0f};
+#if !defined(DEMO_CROSS_COMPILE_WIN32)
   attachment.depthSlice = WGPU_DEPTH_SLICE_UNDEFINED;
+#endif
 }
 
-// Texture creation helper
 struct TextureWithView {
   WGPUTexture texture;
   WGPUTextureView view;
 };
 
+#if defined(DEMO_CROSS_COMPILE_WIN32)
+using GpuTextureCopyInfo = WGPUImageCopyTexture;
+using GpuTextureDataLayout = WGPUTextureDataLayout;
+#else
+using GpuTextureCopyInfo = WGPUTexelCopyTextureInfo;
+using GpuTextureDataLayout = WGPUTexelCopyBufferLayout;
+#endif
+
 GpuBuffer gpu_create_buffer(WGPUDevice device, size_t size, uint32_t usage,
                             const void* data = nullptr);
 TextureWithView gpu_create_texture_2d(WGPUDevice device, uint32_t width,
@@ -100,4 +97,11 @@ RenderPass
 gpu_create_render_pass(WGPUDevice device,
                        WGPUTextureFormat format, // Needed for render pipeline
                        const char* shader_code, ResourceBinding* bindings,
-                       int num_bindings);
\ No newline at end of file
+                       int num_bindings);
+
+// Common sampler configurations
+WGPUSampler gpu_create_linear_sampler(WGPUDevice device);
+WGPUSampler gpu_create_nearest_sampler(WGPUDevice device);
+
+// Dummy 1x1 texture for scene effects (don't need texture input)
+TextureWithView gpu_create_dummy_scene_texture(WGPUDevice device);
\ No newline at end of file