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gpu: implement RenderPassEncoder.Descriptor.timestamp_writes

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-18 23:03:27 -07:00 • committed by Stephen Gutekanst
parent be6e7be247
commit 0aad5812b8
1 changed files with 27 additions and 2 deletions
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29
gpu/src/NativeInstance.zig
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@ -1877,6 +1877,31 @@ const command_encoder_vtable = CommandEncoder.VTable{
};
defer if (d.color_attachments.len > 8) std.heap.page_allocator.free(color_attachments);
var few_timestamp_writes: [8]c.WGPURenderPassTimestampWrite = undefined;
const timestamp_writes = if (d.timestamp_writes) |writes| blk: {
if (writes.len <= 8) {
for (writes) |v, i| {
few_timestamp_writes[i] = c.WGPURenderPassTimestampWrite{
.querySet = @ptrCast(c.WGPUQuerySet, v.query_set.ptr),
.queryIndex = v.query_index,
.location = @enumToInt(v.location),
};
}
break :blk few_timestamp_writes[0..writes.len];
} else {
const mem = std.heap.page_allocator.alloc(c.WGPURenderPassTimestampWrite, writes.len) catch unreachable;
for (writes) |v, i| {
mem[i] = c.WGPURenderPassTimestampWrite{
.querySet = @ptrCast(c.WGPUQuerySet, v.query_set.ptr),
.queryIndex = v.query_index,
.location = @enumToInt(v.location),
};
}
break :blk mem;
}
} else null;
defer if (timestamp_writes != null and timestamp_writes.?.len > 8) std.heap.page_allocator.free(timestamp_writes.?);
const desc = c.WGPURenderPassDescriptor{
.nextInChain = null,
.label = if (d.label) |l| l else null,
@ -1896,8 +1921,8 @@ const command_encoder_vtable = CommandEncoder.VTable{
.stencilReadOnly = v.stencil_read_only,
} else null,
.occlusionQuerySet = if (d.occlusion_query_set) |v| @ptrCast(c.WGPUQuerySet, v.ptr) else null,
.timestampWriteCount = 0, // TODO(implement)
.timestampWrites = null, // TODO(implement)
.timestampWriteCount = if (timestamp_writes) |v| @intCast(u32, v.len) else 0,
.timestampWrites = if (timestamp_writes) |v| @ptrCast(*const c.WGPURenderPassTimestampWrite, &v[0]) else null,
};
return wrapRenderPassEncoder(c.wgpuCommandEncoderBeginRenderPass(@ptrCast(c.WGPUCommandEncoder, ptr), &desc));
}