52 lines
1.3 KiB
Zig
52 lines
1.3 KiB
Zig
const std = @import("std");
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const root = @import("root.zig");
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const compileNzsl = root.compileNzsl;
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const case = root.case;
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test "Simple while loop" {
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const allocator = std.testing.allocator;
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const base = @mod(case.random(f32), 5.0);
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const iterations = 5;
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var expected = base;
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for (1..iterations) |i| {
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expected *= @floatFromInt(i);
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}
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const shader = try std.fmt.allocPrint(
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allocator,
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\\ [nzsl_version("1.1")]
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\\ [feature(float64)]
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\\ module;
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\\
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\\ struct FragOut
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\\ {{
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\\ [location(0)] color: vec4[f32]
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\\ }}
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\\
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\\ [entry(frag)]
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\\ fn main() -> FragOut
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\\ {{
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\\ let value = f32({d});
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\\ let i = 1;
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\\ while (i < {d})
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\\ {{
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\\ value *= f32(i);
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\\ i += 1;
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\\ }}
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\\ let output: FragOut;
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\\ output.color = vec4[f32](value, value, value, value);
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\\ return output;
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\\ }}
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,
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.{
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base,
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iterations,
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},
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);
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defer allocator.free(shader);
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const code = try compileNzsl(allocator, shader);
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defer allocator.free(code);
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try case.expectOutput(f32, 4, code, "color", &.{ expected, expected, expected, expected });
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}
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