adding software blitter base

src/soft/SoftImage.zig

@@ -7,6 +7,8 @@ const lib = @import("lib.zig");
 const VkError = base.VkError;
 const Device = base.Device;
 
+const SoftDevice = @import("SoftDevice.zig");
+
 const Self = @This();
 pub const Interface = base.Image;
 
@@ -38,3 +40,20 @@ pub fn getMemoryRequirements(interface: *Interface, requirements: *vk.MemoryRequ
     _ = interface;
     requirements.alignment = lib.MEMORY_REQUIREMENTS_IMAGE_ALIGNMENT;
 }
+
+inline fn clear(self: *Self, pixel: *const anyopaque, format: vk.Format, view_format: vk.Format, range: vk.ImageSubresourceRange, area: ?vk.Rect2D) void {
+    const soft_device: *SoftDevice = @alignCast(@fieldParentPtr("interface", self.interface.owner));
+    soft_device.blitter.clear(pixel, format, self, view_format, range, area);
+}
+
+pub fn clearRange(self: *Self, color: vk.ClearColorValue, range: vk.ImageSubresourceRange) void {
+    std.debug.assert(range.aspect_mask == vk.ImageAspectFlags{ .color_bit = true });
+
+    const clear_format: vk.Format = if (base.vku.vkuFormatIsSINT(@intCast(@intFromEnum(self.interface.format))))
+        .r32g32b32a32_sint
+    else if (base.vku.vkuFormatIsUINT(@intCast(@intFromEnum(self.interface.format))))
+        .r32g32b32a32_uint
+    else
+        .r32g32b32a32_sfloat;
+    self.clear(@ptrCast(&color.float_32), clear_format, self.interface.format, range, null);
+}