adding storage image read and writes

src/soft/device/ComputeDispatcher.zig

@@ -189,11 +189,10 @@ fn writeDescriptorSets(self: *Self, rt: *spv.Runtime) !void {
                     }
                 },
                 .image => |image_data_array| for (image_data_array, 0..) |image_data, descriptor_index| {
-                    if (image_data.object) |image| {
-                        const memory = if (image.interface.memory) |memory| memory else continue :bindings;
-                        const map: []u8 = @as([*]u8, @ptrCast(try memory.map(image.interface.memory_offset, try image.interface.getTotalSize())))[0..try image.interface.getTotalSize()];
+                    if (image_data.object) |image_view| {
+                        const addr: usize = @intFromPtr(image_view);
                         try rt.writeDescriptorSet(
-                            map,
+                            std.mem.asBytes(&addr),
                             @as(u32, @intCast(set_index)),
                             @as(u32, @intCast(binding_index)),
                             @as(u32, @intCast(descriptor_index)),

src/soft/device/Renderer.zig

@@ -83,7 +83,6 @@ pub fn draw(self: *Self, vertex_count: usize, instance_count: usize, first_verte
 
     const render_target_view: *base.ImageView = (self.framebuffer orelse return).interface.attachments[0];
     const render_target: *SoftImage = @alignCast(@fieldParentPtr("interface", render_target_view.image));
-    const render_target_memory = if (render_target.interface.memory) |memory| memory else return VkError.InvalidDeviceMemoryDrv;
 
     var arena: std.heap.ArenaAllocator = .init(self.device.device_allocator.allocator());
     defer arena.deinit();
@@ -122,10 +121,8 @@ pub fn draw(self: *Self, vertex_count: usize, instance_count: usize, first_verte
         }
     };
 
-    const texel_size = base.format.texelSize(render_target_view.format);
-
     for (draw_call.fragments) |fragment| {
-        const texel_offset = try render_target.getTexelMemoryOffset(
+        try render_target.writeFloat4(
             .{
                 .x = @intFromFloat(fragment.position[0]),
                 .y = @intFromFloat(fragment.position[1]),
@@ -136,9 +133,9 @@ pub fn draw(self: *Self, vertex_count: usize, instance_count: usize, first_verte
                 .mip_level = render_target_view.subresource_range.base_mip_level,
                 .array_layer = render_target_view.subresource_range.base_array_layer,
             },
+            render_target_view.format,
+            fragment.color,
         );
-        const map: []u8 = @as([*]u8, @ptrCast(try render_target_memory.map(render_target.interface.memory_offset + texel_offset, texel_size)))[0..texel_size];
-        blitter.writeFloat4(fragment.color, map, render_target_view.format);
     }
 
     _ = first_vertex;

src/soft/device/blitter.zig

@@ -10,8 +10,8 @@ const VkError = base.VkError;
 pub const SoftImage = @import("../SoftImage.zig");
 pub const SoftImageView = @import("../SoftImageView.zig");
 
-const F32x4 = zm.F32x4;
-const U32x4 = @Vector(4, u32);
+pub const F32x4 = zm.F32x4;
+pub const U32x4 = @Vector(4, u32);
 
 const State = struct {
     src_format: vk.Format,