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Simplify shader compilation step

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duck
2025-04-23 21:49:32 +05:00
parent 5513044d61
commit 5f50968746
4 changed files with 26 additions and 10 deletions
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34
build.zig
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@@ -1,8 +1,9 @@
const std = @import("std");
const SHADERS: []const struct { file: []const u8, stage: []const u8 } = &.{
.{ .file = "basic", .stage = "vert" },
.{ .file = "basic", .stage = "frag" },
/// Paths specified here are compiled to SPIR-V instead of being copied over
const SHADERS: []const []const u8 = &.{
"data/shaders/basic.vert",
"data/shaders/basic.frag",
};
pub fn build(b: *std.Build) void {
@@ -19,14 +20,29 @@ pub fn build(b: *std.Build) void {
exe.linkLibC();
exe.linkSystemLibrary("SDL3");
inline for (SHADERS) |shader| {
const copy_data_cmd = b.addInstallDirectory(.{
.source_dir = b.path("data"),
.install_dir = .bin,
.install_subdir = "data",
.exclude_extensions = &.{ "vert", "frag" },
});
b.getInstallStep().dependOn(&copy_data_cmd.step);
for (SHADERS) |shader_path| {
const glslc = b.addSystemCommand(&.{"glslc"});
glslc.addArg("-fshader-stage=" ++ shader.stage);
glslc.addFileArg(b.path("assets/shaders/" ++ shader.file ++ "." ++ shader.stage));
const ext = std.fs.path.extension(shader_path);
if (std.mem.eql(u8, ext, "vert")) {
glslc.addArg("-fshader-stage=vert");
}
if (std.mem.eql(u8, ext, "frag")) {
glslc.addArg("-fshader-stage=frag");
}
glslc.addFileArg(b.path(shader_path));
glslc.addArg("-o");
const filename = shader.file ++ "_" ++ shader.stage ++ ".spv";
const shader_artifact = glslc.addOutputFileArg(filename);
b.getInstallStep().dependOn(&b.addInstallFileWithDir(shader_artifact, .prefix, filename).step);
const shader_artifact = glslc.addOutputFileArg(std.fs.path.basename(shader_path));
b.getInstallStep().dependOn(&b.addInstallFileWithDir(shader_artifact, .bin, shader_path).step);
}
const run_cmd = b.addRunArtifact(exe);