gpu: implement ComputePipeline

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu/src/ComputePipeline.zig

@@ -0,0 +1,28 @@
+const ComputePipeline = @This();
+
+/// The type erased pointer to the ComputePipeline implementation
+/// Equal to c.WGPUComputePipeline for NativeInstance.
+ptr: *anyopaque,
+vtable: *const VTable,
+
+pub const VTable = struct {
+    reference: fn (ptr: *anyopaque) void,
+    release: fn (ptr: *anyopaque) void,
+    // TODO:
+    // WGPU_EXPORT WGPUBindGroupLayout wgpuComputePipelineGetBindGroupLayout(WGPUComputePipeline computePipeline, uint32_t groupIndex);
+    // WGPU_EXPORT void wgpuComputePipelineSetLabel(WGPUComputePipeline computePipeline, char const * label);
+};
+
+pub inline fn reference(pipeline: ComputePipeline) void {
+    pipeline.vtable.reference(pipeline.ptr);
+}
+
+pub inline fn release(pipeline: ComputePipeline) void {
+    pipeline.vtable.release(pipeline.ptr);
+}
+
+test "syntax" {
+    _ = VTable;
+    _ = reference;
+    _ = release;
+}

gpu/src/NativeInstance.zig

@@ -35,6 +35,7 @@ const BindGroupLayout = @import("BindGroupLayout.zig");
 const Buffer = @import("Buffer.zig");
 const CommandEncoder = @import("CommandEncoder.zig");
 const ComputePassEncoder = @import("ComputePassEncoder.zig");
+const ComputePipeline = @import("ComputePipeline.zig");
 
 const TextureUsage = @import("enums.zig").TextureUsage;
 const TextureFormat = @import("enums.zig").TextureFormat;
@@ -772,9 +773,9 @@ const buffer_vtable = Buffer.VTable{
     }).release,
 };
 
-fn wrapCommandEncoder(buffer: c.WGPUCommandEncoder) CommandEncoder {
+fn wrapCommandEncoder(enc: c.WGPUCommandEncoder) CommandEncoder {
     return .{
-        .ptr = buffer.?,
+        .ptr = enc.?,
         .vtable = &command_encoder_vtable,
     };
 }
@@ -792,14 +793,14 @@ const command_encoder_vtable = CommandEncoder.VTable{
     }).release,
 };
 
-fn wrapComputePassEncoder(buffer: c.WGPUComputePassEncoder) ComputePassEncoder {
+fn wrapComputePassEncoder(enc: c.WGPUComputePassEncoder) ComputePassEncoder {
     return .{
-        .ptr = buffer.?,
+        .ptr = enc.?,
-        .vtable = &command_pass_encoder_vtable,
+        .vtable = &compute_pass_encoder_vtable,
     };
 }
 
-const command_pass_encoder_vtable = ComputePassEncoder.VTable{
+const compute_pass_encoder_vtable = ComputePassEncoder.VTable{
     .reference = (struct {
         pub fn reference(ptr: *anyopaque) void {
             c.wgpuComputePassEncoderReference(@ptrCast(c.WGPUComputePassEncoder, ptr));
@@ -812,6 +813,26 @@ const command_pass_encoder_vtable = ComputePassEncoder.VTable{
     }).release,
 };
 
+fn wrapComputePipeline(pipeline: c.WGPUComputePipeline) ComputePipeline {
+    return .{
+        .ptr = pipeline.?,
+        .vtable = &compute_pipeline_vtable,
+    };
+}
+
+const compute_pipeline_vtable = ComputePipeline.VTable{
+    .reference = (struct {
+        pub fn reference(ptr: *anyopaque) void {
+            c.wgpuComputePipelineReference(@ptrCast(c.WGPUComputePipeline, ptr));
+        }
+    }).reference,
+    .release = (struct {
+        pub fn release(ptr: *anyopaque) void {
+            c.wgpuComputePipelineRelease(@ptrCast(c.WGPUComputePipeline, ptr));
+        }
+    }).release,
+};
+
 test "syntax" {
     _ = wrap;
     _ = interface_vtable;
@@ -840,4 +861,5 @@ test "syntax" {
     _ = wrapBuffer;
     _ = wrapCommandEncoder;
     _ = wrapComputePassEncoder;
+    _ = wrapComputePipeline;
 }

gpu/src/main.zig

@@ -50,6 +50,7 @@ pub const BindGroupLayout = @import("BindGroupLayout.zig");
 pub const Buffer = @import("Buffer.zig");
 pub const CommandEncoder = @import("CommandEncoder.zig");
 pub const ComputePassEncoder = @import("ComputePassEncoder.zig");
+pub const ComputePipeline = @import("ComputePipeline.zig");
 
 pub const Feature = @import("enums.zig").Feature;
 pub const TextureUsage = @import("enums.zig").TextureUsage;
@@ -124,6 +125,7 @@ test "syntax" {
     _ = Buffer;
     _ = CommandEncoder;
     _ = ComputePassEncoder;
+    _ = ComputePipeline;
 
     _ = Feature;
 }