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gpu: implement Device.createBindGroup

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-18 12:36:40 -07:00 • committed by Stephen Gutekanst
parent 48dcfad65c
commit 8588a08e05
2 changed files with 56 additions and 10 deletions
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44
gpu/src/NativeInstance.zig
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@ -321,6 +321,50 @@ const device_vtable = Device.VTable{
return wrapQueue(c.wgpuDeviceGetQueue(@ptrCast(c.WGPUDevice, ptr)));
}
}).getQueue,
.createBindGroup = (struct {
pub fn createBindGroup(ptr: *anyopaque, descriptor: *const BindGroup.Descriptor) BindGroup {
var few_entries: [16]c.WGPUBindGroupEntry = undefined;
const entries = if (descriptor.entries.len <= 8) blk: {
for (descriptor.entries) |entry, i| {
few_entries[i] = c.WGPUBindGroupEntry{
.nextInChain = null,
.binding = entry.binding,
.buffer = @ptrCast(c.WGPUBuffer, entry.buffer.ptr),
.offset = entry.offset,
.size = entry.size,
.sampler = @ptrCast(c.WGPUSampler, entry.sampler.ptr),
.textureView = @ptrCast(c.WGPUTextureView, entry.texture_view.ptr),
};
}
break :blk few_entries[0..descriptor.entries.len];
} else blk: {
const mem = std.heap.page_allocator.alloc(c.WGPUBindGroupEntry, descriptor.entries.len) catch unreachable;
for (descriptor.entries) |entry, i| {
mem[i] = c.WGPUBindGroupEntry{
.nextInChain = null,
.binding = entry.binding,
.buffer = @ptrCast(c.WGPUBuffer, entry.buffer.ptr),
.offset = entry.offset,
.size = entry.size,
.sampler = @ptrCast(c.WGPUSampler, entry.sampler.ptr),
.textureView = @ptrCast(c.WGPUTextureView, entry.texture_view.ptr),
};
}
break :blk mem;
};
defer if (entries.len > 8) std.heap.page_allocator.free(entries);
const desc = c.WGPUBindGroupDescriptor{
.nextInChain = null,
.label = if (descriptor.label) |l| l else null,
.layout = @ptrCast(c.WGPUBindGroupLayout, descriptor.layout.ptr),
.entryCount = @intCast(u32, entries.len),
.entries = &entries[0],
};
return wrapBindGroup(c.wgpuDeviceCreateBindGroup(@ptrCast(c.WGPUDevice, ptr), &desc));
}
}).createBindGroup,
.createShaderModule = (struct {
pub fn createShaderModule(ptr: *anyopaque, descriptor: *const ShaderModule.Descriptor) ShaderModule {
switch (descriptor.code) {