zgpu

git clone git://git.electrosoup.com/zgpu
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common.zig (3186B)

      1 const std = @import("std");
      2 
      3 const c = @import("c.zig").c;
      4 
      5 pub const SType = enum(u32) {
      6     invalid = 0x00000000,
      7     shader_source_spirv = 0x00000001,
      8     shader_source_wgsl = 0x00000002,
      9     render_pass_max_draw_count = 0x00000003,
     10     surface_source_metal_layer = 0x00000004,
     11     surface_source_windows_hwnd = 0x00000005,
     12     surface_source_xlib_window = 0x00000006,
     13     surface_source_wayland_surface = 0x00000007,
     14     surface_source_android_native_window = 0x00000008,
     15     surface_source_xcb_window = 0x00000009,
     16     // native
     17     device_extras = 0x00030001,
     18     native_limits = 0x00030002,
     19     pipeline_layout_extras = 0x00030003,
     20     shader_source_glsl = 0x00030004,
     21     instance_extras = 0x00030006,
     22     bind_group_entry_extras = 0x00030007,
     23     bind_group_layout_entry_extras = 0x00030008,
     24     query_set_descriptor_extras = 0x00030009,
     25     surface_configuration_extras = 0x0003000A,
     26 };
     27 
     28 pub const ChainedStruct = extern struct {
     29     next: ?*const ChainedStruct,
     30     struct_type: SType,
     31 };
     32 
     33 //* Values are encoded as follows:
     34 //* - `{NULL, WGPU_STRLEN}`: the null value.
     35 //* - `{non_null_pointer, WGPU_STRLEN}`: a null-terminated string view.
     36 //* - `{any, 0}`: the empty string.
     37 //* - `{NULL, non_zero_length}`: not allowed (null dereference).
     38 //* - `{non_null_pointer, non_zero_length}`: an explictly-sized string view with
     39 //*   size `non_zero_length` (in bytes).
     40 pub const StringView = extern struct {
     41     data: ?[*]const u8,
     42     length: usize,
     43 
     44     const null_terminated = std.math.maxInt(usize);
     45 
     46     pub fn fromSlice(slice: []const u8) StringView {
     47         return .{
     48             .data = slice.ptr,
     49             .length = slice.len,
     50         };
     51     }
     52 
     53     pub fn toSlice(string: StringView) []const u8 {
     54         if (string.data == null) {
     55             return "";
     56         }
     57         if (string.length == 0) {
     58             return "";
     59         }
     60         if (string.length == null_terminated) {
     61             const slice = std.mem.span(
     62                 @as([*:0]const u8, @ptrCast(string.data.?)),
     63             );
     64             return slice[0..slice.len];
     65         }
     66         return string.data.?[0..string.length];
     67     }
     68 };
     69 
     70 pub const OptionalBool = enum(u32) {
     71     false = 0x00000000,
     72     true = 0x00000001,
     73     undefined = 0x00000002,
     74 };
     75 
     76 pub const CallbackMode = enum(u32) {
     77     wait_any_only = 0x00000001,
     78     allow_process_events = 0x00000002,
     79     allow_spontaneous = 0x00000003,
     80 };
     81 
     82 pub const LoadOp = enum(u32) {
     83     undefined = 0x00000000,
     84     load = 0x00000001,
     85     clear = 0x00000002,
     86 };
     87 
     88 pub const StoreOp = enum(u32) {
     89     undefined = 0x00000000,
     90     store = 0x00000001,
     91     discard = 0x00000002,
     92 };
     93 
     94 pub const Status = enum(u32) {
     95     success = 0x00000001,
     96     @"error" = 0x00000002,
     97 };
     98 
     99 pub const Color = extern struct {
    100     r: f64,
    101     g: f64,
    102     b: f64,
    103     a: f64,
    104 };
    105 
    106 pub const IndexFormat = enum(u32) {
    107     undefined = 0x00000000,
    108     uint16 = 0x00000001,
    109     uint32 = 0x00000002,
    110 };
    111 
    112 pub const CompareFunction = enum(u32) {
    113     undefined = 0x00000000,
    114     never = 0x00000001,
    115     less = 0x00000002,
    116     equal = 0x00000003,
    117     less_equal = 0x00000004,
    118     greater = 0x00000005,
    119     not_equal = 0x00000006,
    120     greater_equal = 0x00000007,
    121     always = 0x00000008,
    122 };