kbz_8/SPIRV-Interpreter
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fixing shader execution
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kbz_8
2026-01-24 15:18:57 +01:00
parent 96ad7f12f9
commit dbf963a3c9
12 changed files with 118 additions and 91 deletions
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22
example/main.zig
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@@ -4,8 +4,8 @@ const spv = @import("spv");
const shader_source = @embedFile("shader.spv");
const screen_width = 200;
const screen_height = 200;
const screen_width = 480;
const screen_height = 240;
pub fn main() !void {
{
@@ -50,9 +50,7 @@ pub fn main() !void {
}
var thread_pool: std.Thread.Pool = undefined;
try thread_pool.init(.{
.allocator = allocator,
});
try thread_pool.init(.{ .allocator = allocator });
var timer = try std.time.Timer.start();
@@ -73,15 +71,15 @@ pub fn main() !void {
const pixel_map: [*]u32 = @as([*]u32, @ptrCast(@alignCast((surface.getPixels() orelse return).ptr)));
const delta: f32 = @as(f32, @floatFromInt(timer.read())) / std.time.ns_per_s;
var frame_timer = try std.time.Timer.start();
defer {
const ns = frame_timer.lap();
const ms = @as(f32, @floatFromInt(ns)) / std.time.ns_per_s;
std.log.info("Took {d:.3}s - {d:.3}fps to render", .{ ms, 1.0 / ms });
std.log.info("Took {d:.3}s - {d:.3}fps to render {d:.2}", .{ ms, 1.0 / ms, delta });
}
const delta: f32 = @as(f32, @floatFromInt(timer.read())) / std.time.ns_per_s;
var wait_group: std.Thread.WaitGroup = .{};
for (0..screen_height) |y| {
const runner = &runner_cache.items[y];
@@ -131,10 +129,10 @@ const Runner = struct {
try rt.readOutput(f32, output[0..], self.color);
const rgba = self.surface.mapRgba(
@truncate(@as(u32, @intFromFloat(output[0] * 255.0))),
@truncate(@as(u32, @intFromFloat(output[1] * 255.0))),
@truncate(@as(u32, @intFromFloat(output[2] * 255.0))),
@truncate(@as(u32, @intFromFloat(output[3] * 255.0))),
@intCast(@max(@min(@as(i32, @intFromFloat(output[0] * 255.0)), 255), 0)),
@intCast(@max(@min(@as(i32, @intFromFloat(output[1] * 255.0)), 255), 0)),
@intCast(@max(@min(@as(i32, @intFromFloat(output[2] * 255.0)), 255), 0)),
@intCast(@max(@min(@as(i32, @intFromFloat(output[3] * 255.0)), 255), 0)),
);
pixel_map[(y * self.surface.getWidth()) + x] = rgba.value;