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gpu: add RenderPassDescriptor.init slice helper

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-08-16 18:53:41 -07:00
parent 6c9c4c71bb
commit 3ee9f2c18c
2 changed files with 22 additions and 2 deletions
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1
gpu/README.md
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@ -175,6 +175,7 @@ And, to initialize data structures with slices in them, the following helpers ar
* `RenderBundleEncoder.Descriptor.init`
* `Texture.Descriptor.init`
* `ComputePassDescriptor.init`
* `RenderPassDescriptor.init`
### Typed callbacks

23
gpu/src/types.zig
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@ -78,14 +78,33 @@ pub const ComputePassDescriptor = extern struct {
pub const RenderPassDescriptor = extern struct {
next_in_chain: ?*const ChainedStruct = null,
label: ?[*:0]const u8 = null,
// TODO: slice helper
color_attachment_count: u32 = 0,
color_attachments: ?[*]const RenderPassColorAttachment = null,
depth_stencil_attachment: ?*const RenderPassDepthStencilAttachment = null,
occlusion_query_set: ?*QuerySet = null,
// TODO: slice helper
timestamp_write_count: u32 = 0,
timestamp_writes: ?[*]const RenderPassTimestampWrite = null,
/// Provides a slightly friendlier Zig API to initialize this structure.
pub inline fn init(v: struct {
next_in_chain: ?*const ChainedStruct = null,
label: ?[*:0]const u8 = null,
color_attachments: ?[]const RenderPassColorAttachment = null,
depth_stencil_attachment: ?*const RenderPassDepthStencilAttachment = null,
occlusion_query_set: ?*QuerySet = null,
timestamp_writes: ?[]const RenderPassTimestampWrite = null,
}) ComputePassDescriptor {
return .{
.next_in_chain = v.next_in_chain,
.label = v.label,
.color_attachment_count = if (v.color_attachments) |e| @intCast(u32, e.len) else 0,
.color_attachments = if (v.color_attachments) |e| e.ptr else null,
.depth_stencil_attachment = v.depth_stencil_attachment,
.occlusion_query_set = v.occlusion_query_set,
.timestamp_write_count = if (v.timestamp_writes) |e| @intCast(u32, e.len) else 0,
.timestamp_writes = if (v.timestamp_writes) |e| e.ptr else null,
};
}
};
pub const AlphaMode = enum(u32) { premultiplied = 0x00000000, unpremultiplied = 0x00000001, opaq = 0x00000002 };