From 116f5b010f996d11713a6ebdb0073d85a505a6b7 Mon Sep 17 00:00:00 2001
From: peterino2 <peterlimail47@gmail.com>
Date: Sat, 7 Jun 2025 14:15:40 -0700
Subject: [PATCH] saving

---
 lib/sdl3/src/samples/hello-triangle.zig | 54 ++++++++++++-------------
 1 file changed, 27 insertions(+), 27 deletions(-)

diff --git a/lib/sdl3/src/samples/hello-triangle.zig b/lib/sdl3/src/samples/hello-triangle.zig
index bc47227..0863874 100644
--- a/lib/sdl3/src/samples/hello-triangle.zig
+++ b/lib/sdl3/src/samples/hello-triangle.zig
@@ -92,17 +92,17 @@ pub fn startContext(self: *@This()) !void {
     pci.rasterizer_state.fill_mode = .fillmodeFill;
     self.pipeline = self.device.createGPUGraphicsPipeline(&pci);
 
-    // self.colorBuffer = self.device.createGPUBuffer(&.{
-    //     .usage = .{ .bufferusageVertex = true, .bufferusageGraphicsStorageRead = true },
-    //     .size = 8192 * 2,
-    //     .props = 0,
-    // });
+    self.colorBuffer = self.device.createGPUBuffer(&.{
+        .usage = .{ .bufferusageVertex = true, .bufferusageGraphicsStorageRead = true },
+        .size = 8192 * 2,
+        .props = 0,
+    });
 
-    // self.colorBufferTransfer = self.device.createGPUTransferBuffer(&.{
-    //     .usage = .transferbufferusageUpload,
-    //     .size = 8192 * 2,
-    //     .props = 0,
-    // });
+    self.colorBufferTransfer = self.device.createGPUTransferBuffer(&.{
+        .usage = .transferbufferusageUpload,
+        .size = 8192 * 2,
+        .props = 0,
+    });
 }
 
 pub fn loadFileAlloc(filename: []const u8, comptime alignment: usize, allocator: std.mem.Allocator) ![]u8 {
@@ -182,27 +182,27 @@ pub fn draw(self: *@This(), dt: f64) void {
 
     const cmd = self.device.acquireGPUCommandBuffer();
     var swapchain_texture: *gpu.GPUTexture = undefined;
-    // {
-    //     const buffer = self.device.mapGPUTransferBuffer(self.colorBufferTransfer, true);
+    {
+        const buffer = self.device.mapGPUTransferBuffer(self.colorBufferTransfer, true);
 
-    //     var b: [*][4]f32 = @ptrCast(@alignCast(buffer));
+        var b: [*][4]f32 = @ptrCast(@alignCast(buffer));
 
-    //     b[0] = .{ @floatCast(std.math.sin(self.totalTime * 3 * 2 + 0.8) * 0.2 + 0.8), 0.4, 0.4, 1.0 };
-    //     b[1] = .{ 0.4, @floatCast(std.math.sin(self.totalTime * 2 * 2 + 0.3) * 0.2 + 0.8), 0.4, 1.0 };
-    //     b[2] = .{ 0.4, 0.4, @floatCast(std.math.sin(self.totalTime * 4 * 2) * 0.2 + 0.8), 1.0 };
+        b[0] = .{ @floatCast(std.math.sin(self.totalTime * 3 * 2 + 0.8) * 0.2 + 0.8), 0.4, 0.4, 1.0 };
+        b[1] = .{ 0.4, @floatCast(std.math.sin(self.totalTime * 2 * 2 + 0.3) * 0.2 + 0.8), 0.4, 1.0 };
+        b[2] = .{ 0.4, 0.4, @floatCast(std.math.sin(self.totalTime * 4 * 2) * 0.2 + 0.8), 1.0 };
 
-    //     self.device.unmapGPUTransferBuffer(self.colorBufferTransfer);
-    // }
+        self.device.unmapGPUTransferBuffer(self.colorBufferTransfer);
+    }
 
-    // {
-    //     const copyPass = cmd.beginGPUCopyPass();
-    //     defer copyPass.endGPUCopyPass();
-    //     copyPass.uploadToGPUBuffer(&.{ .transfer_buffer = self.colorBufferTransfer, .offset = 0 }, &.{
-    //         .buffer = self.colorBuffer,
-    //         .offset = 0,
-    //         .size = 4 * 12,
-    //     }, true);
-    // }
+    {
+        const copyPass = cmd.beginGPUCopyPass();
+        defer copyPass.endGPUCopyPass();
+        copyPass.uploadToGPUBuffer(&.{ .transfer_buffer = self.colorBufferTransfer, .offset = 0 }, &.{
+            .buffer = self.colorBuffer,
+            .offset = 0,
+            .size = 4 * 12,
+        }, true);
+    }
 
     if (cmd.waitAndAcquireGPUSwapchainTexture(self.window, &swapchain_texture, null, null)) {
         var targetInfo: gpu.GPUColorTargetInfo = std.mem.zeroes(gpu.GPUColorTargetInfo);