fixing all image operation tests

build.zig.zon

@@ -26,8 +26,8 @@
             .hash = "N-V-__8AAMpOQxkHCKTw9i-NwmmQ3ks1ndFDXcVLlic4KjK3",
         },
         .SPIRV_Interpreter = .{
-            .url = "git+https://git.kbz8.me/kbz_8/SPIRV-Interpreter#e993162d4eebc8efa3b8a795da8c107a38ba5858",
+            .url = "git+https://git.kbz8.me/kbz_8/SPIRV-Interpreter#9c355fe126d0142ac6d1fae48633993864c90d61",
-            .hash = "SPIRV_Interpreter-0.0.1-ajmpn-55BQAOM0GSLiRt-IflVvVg5tRyOyHpBjXz5XdZ",
+            .hash = "SPIRV_Interpreter-0.0.1-ajmpn867BQA-J2PA4fGQGnb3WcNtqd_3_W7-goaEocC5",
             .lazy = true,
         },
         //.SPIRV_Interpreter = .{

src/soft/SoftCommandBuffer.zig

@@ -168,7 +168,7 @@ pub fn beginRenderPass(interface: *Interface, render_pass: *base.RenderPass, fra
                     if (clear_mask.color_bit) {
                         try blitter.clear(
                             (impl.clear_values orelse return VkError.Unknown)[index],
-                            try image.getClearFormat(),
+                            try SoftImage.getClearFormatFor(attachment.format),
                             image,
                             attachment.format,
                             attachment.subresource_range,
@@ -401,7 +401,7 @@ pub fn clearAttachment(interface: *Interface, attachment: vk.ClearAttachment, re
             };
 
             const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.image));
-            const clear_format = try image.getClearFormat();
+            const clear_format = try SoftImage.getClearFormatFor(image_view.format);
 
             const range: vk.ImageSubresourceRange = .{
                 .aspect_mask = impl.attachment.aspect_mask,

src/soft/SoftFramebuffer.zig

@@ -49,7 +49,10 @@ pub fn resolveAttachments(self: *Self, render_pass: *SoftRenderPass, subpass_ind
                     const dst_image_view = self.interface.attachments[resolve.attachment];
                     const dst_image: *SoftImage = @alignCast(@fieldParentPtr("interface", dst_image_view.image));
 
-                    try blitter.resolve(src_image, dst_image, .{
+                    try blitter.resolveWithFormats(
+                        src_image,
+                        dst_image,
+                        .{
                             .src_subresource = .{
                                 .aspect_mask = src_image_view.subresource_range.aspect_mask,
                                 .base_array_layer = src_image_view.subresource_range.base_array_layer,
@@ -65,7 +68,10 @@ pub fn resolveAttachments(self: *Self, render_pass: *SoftRenderPass, subpass_ind
                             },
                             .dst_offset = .{ .x = 0, .y = 0, .z = 0 },
                             .extent = src_image.getMipLevelExtent(src_image_view.subresource_range.base_mip_level),
-                    });
+                        },
+                        src_image_view.format,
+                        dst_image_view.format,
+                    );
                 }
             }
         }

src/soft/SoftImage.zig

@@ -102,9 +102,13 @@ pub fn getMemoryRequirements(_: *Interface, requirements: *vk.MemoryRequirements
 }
 
 pub fn getClearFormat(self: *Self) VkError!vk.Format {
-    return if (base.c.vkuFormatIsSINT(@intCast(@intFromEnum(self.interface.format))))
+    return getClearFormatFor(self.interface.format);
+}
+
+pub fn getClearFormatFor(format: vk.Format) VkError!vk.Format {
+    return if (base.format.isSint(format))
         .r32g32b32a32_sint
-    else if (base.c.vkuFormatIsUINT(@intCast(@intFromEnum(self.interface.format))))
+    else if (base.format.isUint(format))
         .r32g32b32a32_uint
     else
         .r32g32b32a32_sfloat;
@@ -472,8 +476,8 @@ fn getSubresourceLayout(interface: *const Interface, subresource: vk.ImageSubres
         .offset = try self.getSubresourceOffset(subresource.aspect_mask, subresource.mip_level, subresource.array_layer),
         .size = self.getMultiSampledLevelSize(subresource.aspect_mask, subresource.mip_level),
         .row_pitch = self.interface.getRowPitchMemSizeForMipLevel(subresource.aspect_mask, subresource.mip_level),
-        .array_pitch = self.interface.getSliceMemSizeForMipLevel(subresource.aspect_mask, subresource.mip_level),
+        .array_pitch = self.getLayerSize(subresource.aspect_mask),
-        .depth_pitch = self.getLayerSize(subresource.aspect_mask),
+        .depth_pitch = self.interface.getSliceMemSizeForMipLevel(subresource.aspect_mask, subresource.mip_level),
     };
 }
 

src/soft/SoftPipeline.zig

@@ -102,6 +102,7 @@ pub fn createCompute(device: *base.Device, allocator: std.mem.Allocator, cache:
                     .writeImageFloat4 = writeImageFloat4,
                     .writeImageInt4 = writeImageInt4,
                     .sampleImageFloat4 = sampleImageFloat4,
+                    .queryImageSize = queryImageSize,
                 },
             ) catch |err| {
                 std.log.scoped(.SpvRuntimeInit).err("SPIR-V Runtime failed to initialize, {s}", .{@errorName(err)});
@@ -187,6 +188,7 @@ pub fn createGraphics(device: *base.Device, allocator: std.mem.Allocator, cache:
                         .writeImageFloat4 = writeImageFloat4,
                         .writeImageInt4 = writeImageInt4,
                         .sampleImageFloat4 = sampleImageFloat4,
+                        .queryImageSize = queryImageSize,
                     },
                 ) catch |err| {
                     std.log.scoped(.SpvRuntimeInit).err("SPIR-V Runtime failed to initialize, {s}", .{@errorName(err)});
@@ -264,16 +266,17 @@ fn readImageFloat4(context: *anyopaque, dim: spv.SpvDim, x: i32, y: i32, z: i32)
     } else {
         const image_view: *SoftImageView = @ptrCast(@alignCast(context));
         const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
+        const cube_face: u32 = if (dim == .Cube) @intCast(z) else 0;
         pixel = image.readFloat4(
             .{
                 .x = x,
                 .y = y,
-                .z = z,
+                .z = if (dim == .Cube) 0 else z,
             },
             .{
                 .aspect_mask = image_view.interface.subresource_range.aspect_mask,
                 .mip_level = image_view.interface.subresource_range.base_mip_level,
-                .array_layer = image_view.interface.subresource_range.base_array_layer,
+                .array_layer = image_view.interface.subresource_range.base_array_layer + cube_face,
             },
             image_view.interface.format,
         ) catch return SpvRuntimeError.Unknown;
@@ -296,16 +299,17 @@ fn readImageInt4(context: *anyopaque, dim: spv.SpvDim, x: i32, y: i32, z: i32) S
     } else {
         const image_view: *SoftImageView = @ptrCast(@alignCast(context));
         const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
+        const cube_face: u32 = if (dim == .Cube) @intCast(z) else 0;
         pixel = image.readInt4(
             .{
                 .x = x,
                 .y = y,
-                .z = z,
+                .z = if (dim == .Cube) 0 else z,
             },
             .{
                 .aspect_mask = image_view.interface.subresource_range.aspect_mask,
                 .mip_level = image_view.interface.subresource_range.base_mip_level,
-                .array_layer = image_view.interface.subresource_range.base_array_layer,
+                .array_layer = image_view.interface.subresource_range.base_array_layer + cube_face,
             },
             image_view.interface.format,
         ) catch return SpvRuntimeError.Unknown;
@@ -328,16 +332,17 @@ fn writeImageFloat4(context: *anyopaque, dim: spv.SpvDim, x: i32, y: i32, z: i32
     } else {
         const image_view: *SoftImageView = @ptrCast(@alignCast(context));
         const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
+        const cube_face: u32 = if (dim == .Cube) @intCast(z) else 0;
         image.writeFloat4(
             .{
                 .x = x,
                 .y = y,
-                .z = z,
+                .z = if (dim == .Cube) 0 else z,
             },
             .{
                 .aspect_mask = image_view.interface.subresource_range.aspect_mask,
                 .mip_level = image_view.interface.subresource_range.base_mip_level,
-                .array_layer = image_view.interface.subresource_range.base_array_layer,
+                .array_layer = image_view.interface.subresource_range.base_array_layer + cube_face,
             },
             image_view.interface.format,
             vec_pixel,
@@ -355,16 +360,17 @@ fn writeImageInt4(context: *anyopaque, dim: spv.SpvDim, x: i32, y: i32, z: i32,
     } else {
         const image_view: *SoftImageView = @ptrCast(@alignCast(context));
         const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
+        const cube_face: u32 = if (dim == .Cube) @intCast(z) else 0;
         image.writeInt4(
             .{
                 .x = x,
                 .y = y,
-                .z = z,
+                .z = if (dim == .Cube) 0 else z,
             },
             .{
                 .aspect_mask = image_view.interface.subresource_range.aspect_mask,
                 .mip_level = image_view.interface.subresource_range.base_mip_level,
-                .array_layer = image_view.interface.subresource_range.base_array_layer,
+                .array_layer = image_view.interface.subresource_range.base_array_layer + cube_face,
             },
             image_view.interface.format,
             vec_pixel,
@@ -372,6 +378,157 @@ fn writeImageInt4(context: *anyopaque, dim: spv.SpvDim, x: i32, y: i32, z: i32,
     }
 }
 
+const CubeCoordinate = struct {
+    face: u32,
+    u: f32,
+    v: f32,
+};
+
+fn resolveCubeCoordinate(x: f32, y: f32, z: f32) CubeCoordinate {
+    const ax = @abs(x);
+    const ay = @abs(y);
+    const az = @abs(z);
+
+    var face: u32 = 0;
+    var sc: f32 = 0.0;
+    var tc: f32 = 0.0;
+    var ma: f32 = 1.0;
+
+    if (ax >= ay and ax >= az) {
+        ma = ax;
+        if (x >= 0.0) {
+            face = 0;
+            sc = -z;
+            tc = -y;
+        } else {
+            face = 1;
+            sc = z;
+            tc = -y;
+        }
+    } else if (ay >= ax and ay >= az) {
+        ma = ay;
+        if (y >= 0.0) {
+            face = 2;
+            sc = x;
+            tc = z;
+        } else {
+            face = 3;
+            sc = x;
+            tc = -z;
+        }
+    } else {
+        ma = az;
+        if (z >= 0.0) {
+            face = 4;
+            sc = x;
+            tc = -y;
+        } else {
+            face = 5;
+            sc = -x;
+            tc = -y;
+        }
+    }
+
+    const inv_ma = if (ma == 0.0) 0.0 else 1.0 / ma;
+    return .{
+        .face = face,
+        .u = (sc * inv_ma + 1.0) * 0.5,
+        .v = (tc * inv_ma + 1.0) * 0.5,
+    };
+}
+
+fn cubeDirection(face: u32, u: f32, v: f32) struct { x: f32, y: f32, z: f32 } {
+    const sc = u * 2.0 - 1.0;
+    const tc = v * 2.0 - 1.0;
+
+    return switch (face) {
+        0 => .{ .x = 1.0, .y = -tc, .z = -sc },
+        1 => .{ .x = -1.0, .y = -tc, .z = sc },
+        2 => .{ .x = sc, .y = 1.0, .z = tc },
+        3 => .{ .x = sc, .y = -1.0, .z = -tc },
+        4 => .{ .x = sc, .y = -tc, .z = 1.0 },
+        5 => .{ .x = -sc, .y = -tc, .z = -1.0 },
+        else => .{ .x = 0.0, .y = 0.0, .z = 0.0 },
+    };
+}
+
+fn readSampledFloat4(
+    image: *SoftImage,
+    image_view: *SoftImageView,
+    dim: spv.SpvDim,
+    coord: CubeCoordinate,
+    ix: i32,
+    iy: i32,
+) VkError!zm.F32x4 {
+    const width_f: f32 = @floatFromInt(image.interface.extent.width);
+    const height_f: f32 = @floatFromInt(image.interface.extent.height);
+
+    const texel = if (dim == .Cube) blk: {
+        const dir = cubeDirection(
+            coord.face,
+            (@as(f32, @floatFromInt(ix)) + 0.5) / width_f,
+            (@as(f32, @floatFromInt(iy)) + 0.5) / height_f,
+        );
+        break :blk resolveCubeCoordinate(dir.x, dir.y, dir.z);
+    } else coord;
+
+    const result = try image.readFloat4(
+        .{
+            .x = if (dim == .Cube)
+                std.math.clamp(@as(i32, @intFromFloat(texel.u * width_f)), 0, image.interface.extent.width - 1)
+            else
+                std.math.clamp(ix, 0, image.interface.extent.width - 1),
+            .y = if (dim == .Cube)
+                std.math.clamp(@as(i32, @intFromFloat(texel.v * height_f)), 0, image.interface.extent.height - 1)
+            else
+                std.math.clamp(iy, 0, image.interface.extent.height - 1),
+            .z = 0,
+        },
+        .{
+            .aspect_mask = image_view.interface.subresource_range.aspect_mask,
+            .mip_level = image_view.interface.subresource_range.base_mip_level,
+            .array_layer = image_view.interface.subresource_range.base_array_layer + texel.face,
+        },
+        image_view.interface.format,
+    );
+    return result;
+}
+
+fn sampleNearestFloat4(image: *SoftImage, image_view: *SoftImageView, dim: spv.SpvDim, coord: CubeCoordinate) VkError!zm.F32x4 {
+    const width_f: f32 = @floatFromInt(image.interface.extent.width);
+    const height_f: f32 = @floatFromInt(image.interface.extent.height);
+    return readSampledFloat4(
+        image,
+        image_view,
+        dim,
+        coord,
+        @intFromFloat(coord.u * width_f),
+        @intFromFloat(coord.v * height_f),
+    );
+}
+
+fn sampleLinearFloat4(image: *SoftImage, image_view: *SoftImageView, dim: spv.SpvDim, coord: CubeCoordinate) VkError!zm.F32x4 {
+    const width_f: f32 = @floatFromInt(image.interface.extent.width);
+    const height_f: f32 = @floatFromInt(image.interface.extent.height);
+    const x = coord.u * width_f - 0.5;
+    const y = coord.v * height_f - 0.5;
+    const x0: i32 = @intFromFloat(@floor(x));
+    const y0: i32 = @intFromFloat(@floor(y));
+    const x1 = x0 + 1;
+    const y1 = y0 + 1;
+    const wx = x - @as(f32, @floatFromInt(x0));
+    const wy = y - @as(f32, @floatFromInt(y0));
+
+    const p00 = try readSampledFloat4(image, image_view, dim, coord, x0, y0);
+    const p10 = try readSampledFloat4(image, image_view, dim, coord, x1, y0);
+    const p01 = try readSampledFloat4(image, image_view, dim, coord, x0, y1);
+    const p11 = try readSampledFloat4(image, image_view, dim, coord, x1, y1);
+
+    const row0 = p00 * zm.f32x4s(1.0 - wx) + p10 * zm.f32x4s(wx);
+    const row1 = p01 * zm.f32x4s(1.0 - wx) + p11 * zm.f32x4s(wx);
+    return row0 * zm.f32x4s(1.0 - wy) + row1 * zm.f32x4s(wy);
+}
+
 fn sampleImageFloat4(context: *anyopaque, context2: *anyopaque, dim: spv.SpvDim, x: f32, y: f32, z: f32) SpvRuntimeError!spv.Runtime.Vec4(f32) {
     var pixel = zm.f32x4s(0.0);
 
@@ -385,8 +542,14 @@ fn sampleImageFloat4(context: *anyopaque, context2: *anyopaque, dim: spv.SpvDim,
         const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
 
         const sampler: *SoftSampler = @ptrCast(@alignCast(context2));
-        _ = sampler;
 
+        if (dim == .Cube) {
+            const coord = resolveCubeCoordinate(x, y, z);
+            pixel = switch (sampler.interface.mag_filter) {
+                .linear => sampleLinearFloat4(image, image_view, dim, coord),
+                else => sampleNearestFloat4(image, image_view, dim, coord),
+            } catch return SpvRuntimeError.Unknown;
+        } else {
             pixel = image.readFloat4(
                 .{
                     .x = std.math.clamp(@as(i32, @intFromFloat(x * @as(f32, @floatFromInt(image.interface.extent.width)))), 0, image.interface.extent.width - 1),
@@ -401,6 +564,7 @@ fn sampleImageFloat4(context: *anyopaque, context2: *anyopaque, dim: spv.SpvDim,
                 image_view.interface.format,
             ) catch return SpvRuntimeError.Unknown;
         }
+    }
 
     return .{
         .x = pixel[0],
@@ -409,3 +573,39 @@ fn sampleImageFloat4(context: *anyopaque, context2: *anyopaque, dim: spv.SpvDim,
         .w = pixel[3],
     };
 }
+
+fn queryImageSize(context: *anyopaque, dim: spv.SpvDim, arrayed: bool) SpvRuntimeError!spv.Runtime.Vec4(u32) {
+    if (dim == .Buffer) {
+        const buffer_view: *SoftBufferView = @ptrCast(@alignCast(context));
+        const range = if (buffer_view.interface.range == vk.WHOLE_SIZE)
+            buffer_view.interface.buffer.size - buffer_view.interface.offset
+        else
+            buffer_view.interface.range;
+        return .{
+            .x = @intCast(@divTrunc(range, base.format.texelSize(buffer_view.interface.format))),
+            .y = 0,
+            .z = 0,
+            .w = 0,
+        };
+    }
+
+    const image_view: *SoftImageView = @ptrCast(@alignCast(context));
+    const image: *SoftImage = @alignCast(@fieldParentPtr("interface", image_view.interface.image));
+    const extent = image.getMipLevelExtent(image_view.interface.subresource_range.base_mip_level);
+    const layers = if (image_view.interface.subresource_range.layer_count == vk.REMAINING_ARRAY_LAYERS)
+        image.interface.array_layers - image_view.interface.subresource_range.base_array_layer
+    else
+        image_view.interface.subresource_range.layer_count;
+    return switch (dim) {
+        .@"1D" => if (arrayed)
+            .{ .x = extent.width, .y = layers, .z = 0, .w = 0 }
+        else
+            .{ .x = extent.width, .y = 0, .z = 0, .w = 0 },
+        .@"2D", .Cube, .Rect => if (arrayed)
+            .{ .x = extent.width, .y = extent.height, .z = layers, .w = 0 }
+        else
+            .{ .x = extent.width, .y = extent.height, .z = 0, .w = 0 },
+        .@"3D" => .{ .x = extent.width, .y = extent.height, .z = extent.depth, .w = 0 },
+        else => .{ .x = extent.width, .y = extent.height, .z = layers, .w = 0 },
+    };
+}

src/soft/device/ComputeDispatcher.zig

@@ -106,7 +106,27 @@ inline fn run(data: RunData) !void {
     const rt = &shader.runtimes[data.batch_id].rt;
 
     const entry = try rt.getEntryPointByName(shader.entry);
+    const uses_control_barrier = hasControlBarrier(rt.mod.code);
 
+    var barrier_runtimes: []spv.Runtime = &.{};
+    var barrier_statuses: []spv.Runtime.EntryPointStatus = &.{};
+    if (uses_control_barrier) {
+        barrier_runtimes = try allocator.alloc(spv.Runtime, data.invocations_per_workgroup);
+        barrier_statuses = try allocator.alloc(spv.Runtime.EntryPointStatus, data.invocations_per_workgroup);
+        for (barrier_runtimes) |*barrier_rt| {
+            barrier_rt.* = try spv.Runtime.init(allocator, rt.mod, rt.image_api);
+            try barrier_rt.copySpecializationConstantsFrom(allocator, rt);
+        }
+    }
+    defer {
+        for (barrier_runtimes) |*barrier_rt| {
+            barrier_rt.deinit(allocator);
+        }
+        allocator.free(barrier_runtimes);
+        allocator.free(barrier_statuses);
+    }
+
+    if (!uses_control_barrier)
         try ExecutionDevice.writeDescriptorSets(data.self.state, rt);
 
     var group_index: usize = data.batch_id;
@@ -121,15 +141,23 @@ inline fn run(data: RunData) !void {
         modulo -= group_y * data.group_count_x;
         const group_x = modulo;
 
-        try setupWorkgroupBuiltins(data.self, rt, .{
+        const group_count_vec = @Vector(3, u32){
             @as(u32, @intCast(data.group_count_x)),
             @as(u32, @intCast(data.group_count_y)),
             @as(u32, @intCast(data.group_count_z)),
-        }, .{
+        };
+        const group_id_vec = @Vector(3, u32){
             @as(u32, @intCast(group_x)),
             @as(u32, @intCast(group_y)),
             @as(u32, @intCast(group_z)),
-        });
+        };
+
+        if (uses_control_barrier) {
+            try runBarrierWorkgroup(data, barrier_runtimes, barrier_statuses, entry, group_count_vec, group_id_vec);
+            continue;
+        }
+
+        try setupWorkgroupBuiltins(data.self, rt, group_count_vec, group_id_vec);
 
         for (0..data.invocations_per_workgroup) |i| {
             const invocation_index = data.self.invocation_index.fetchAdd(1, .monotonic);
@@ -163,6 +191,58 @@ inline fn run(data: RunData) !void {
     }
 }
 
+fn runBarrierWorkgroup(
+    data: RunData,
+    runtimes: []spv.Runtime,
+    statuses: []spv.Runtime.EntryPointStatus,
+    entry: spv.SpvWord,
+    group_count: @Vector(3, u32),
+    group_id: @Vector(3, u32),
+) !void {
+    const allocator = data.self.device.device_allocator.allocator();
+
+    for (runtimes, 0..) |*rt, i| {
+        try ExecutionDevice.writeDescriptorSets(data.self.state, rt);
+        try setupWorkgroupBuiltins(data.self, rt, group_count, group_id);
+        try setupSubgroupBuiltins(data.self, rt, group_id, i);
+        statuses[i] = try rt.beginEntryPoint(allocator, entry);
+        try rt.flushDescriptorSets(allocator);
+    }
+
+    while (true) {
+        var pending = false;
+        for (statuses) |status| {
+            if (status == .barrier) {
+                pending = true;
+                break;
+            }
+        }
+        if (!pending)
+            break;
+
+        for (runtimes, 0..) |*rt, i| {
+            if (statuses[i] == .completed)
+                continue;
+            statuses[i] = try rt.continueEntryPoint(allocator);
+            try rt.flushDescriptorSets(allocator);
+        }
+    }
+}
+
+/// TODO: Move this in the SPIR-V Interpreter
+fn hasControlBarrier(code: []const spv.SpvWord) bool {
+    var i: usize = 5;
+    while (i < code.len) {
+        const opcode_data = code[i];
+        const word_count = (opcode_data & (~spv.spv.SpvOpCodeMask)) >> spv.spv.SpvWordCountShift;
+        const opcode: spv.spv.SpvOp = @enumFromInt(opcode_data & spv.spv.SpvOpCodeMask);
+        if (opcode == .ControlBarrier)
+            return true;
+        i += @max(word_count, 1);
+    }
+    return false;
+}
+
 inline fn dumpResultsTable(allocator: std.mem.Allocator, io: std.Io, rt: *spv.Runtime, is_early: bool) !void {
     @branchHint(.cold);
     const file = try std.Io.Dir.cwd().createFile(

src/soft/device/Device.zig

@@ -71,7 +71,7 @@ pub fn writeDescriptorSets(state: *PipelineState, rt: *spv.Runtime) !void {
             switch (binding) {
                 .buffer => |buffer_data_array| for (buffer_data_array, 0..) |buffer_data, descriptor_index| {
                     if (buffer_data.object) |buffer| {
-                        const map = buffer.mapAsSliceWithOffset(u8, buffer_data.offset, buffer_data.size) catch continue :bindings;
+                        const map = buffer.mapAsSliceWithAddedOffset(u8, buffer_data.offset, buffer_data.size) catch continue :bindings;
                         try rt.writeDescriptorSet(
                             map,
                             @as(u32, @intCast(set_index)),

src/soft/device/blitter.zig

@@ -286,6 +286,17 @@ fn sample(src: []const u8, pos: F32x4, dim: F32x4, slice_bytes: usize, pitch_byt
 }
 
 pub fn blitRegion(src: *const SoftImage, dst: *SoftImage, region: vk.ImageBlit, filter: vk.Filter) VkError!void {
+    try blitRegionWithFormats(
+        src,
+        dst,
+        region,
+        filter,
+        base.format.fromAspect(src.interface.format, region.src_subresource.aspect_mask),
+        base.format.fromAspect(dst.interface.format, region.dst_subresource.aspect_mask),
+    );
+}
+
+pub fn blitRegionWithFormats(src: *const SoftImage, dst: *SoftImage, region: vk.ImageBlit, filter: vk.Filter, src_format: vk.Format, dst_format: vk.Format) VkError!void {
     const io = dst.interface.owner.io();
     const timer = std.Io.Timestamp.now(io, .real);
     defer if (comptime base.config.logs != .none) {
@@ -323,13 +334,10 @@ pub fn blitRegion(src: *const SoftImage, dst: *SoftImage, region: vk.ImageBlit,
     const y0 = @as(f32, @floatFromInt(src_offset_0.y)) + (0.5 - @as(f32, @floatFromInt(dst_offset_0.y))) * height_ratio;
     const z0 = @as(f32, @floatFromInt(src_offset_0.z)) + (0.5 - @as(f32, @floatFromInt(dst_offset_0.z))) * depth_ratio;
 
-    const src_slice_pitch_bytes = src.interface.getSliceMemSizeForMipLevel(region.src_subresource.aspect_mask, region.src_subresource.mip_level);
+    const src_slice_pitch_bytes = src.getSliceMemSizeForMipLevelWithFormat(region.src_subresource.aspect_mask, region.src_subresource.mip_level, src_format);
-    const src_row_pitch_bytes = src.interface.getRowPitchMemSizeForMipLevel(region.src_subresource.aspect_mask, region.src_subresource.mip_level);
+    const src_row_pitch_bytes = src.getRowPitchMemSizeForMipLevelWithFormat(region.src_subresource.aspect_mask, region.src_subresource.mip_level, src_format);
-    const dst_slice_pitch_bytes = dst.interface.getSliceMemSizeForMipLevel(region.dst_subresource.aspect_mask, region.dst_subresource.mip_level);
+    const dst_slice_pitch_bytes = dst.getSliceMemSizeForMipLevelWithFormat(region.dst_subresource.aspect_mask, region.dst_subresource.mip_level, dst_format);
-    const dst_row_pitch_bytes = dst.interface.getRowPitchMemSizeForMipLevel(region.dst_subresource.aspect_mask, region.dst_subresource.mip_level);
+    const dst_row_pitch_bytes = dst.getRowPitchMemSizeForMipLevelWithFormat(region.dst_subresource.aspect_mask, region.dst_subresource.mip_level, dst_format);
-
-    const src_format = base.format.fromAspect(src.interface.format, region.src_subresource.aspect_mask);
-    const dst_format = base.format.fromAspect(dst.interface.format, region.dst_subresource.aspect_mask);
 
     const apply_filter = (filter != .nearest);
     const allow_srgb_conversion = apply_filter or base.format.isSrgb(src_format) != base.format.isSrgb(dst_format);
@@ -485,6 +493,16 @@ fn blit(state: State, data: BlitData) void {
 
 /// Using image blitting to resolve
 pub inline fn resolve(src: *const SoftImage, dst: *SoftImage, region: vk.ImageResolve) VkError!void {
+    try resolveWithFormats(
+        src,
+        dst,
+        region,
+        base.format.fromAspect(src.interface.format, region.src_subresource.aspect_mask),
+        base.format.fromAspect(dst.interface.format, region.dst_subresource.aspect_mask),
+    );
+}
+
+pub inline fn resolveWithFormats(src: *const SoftImage, dst: *SoftImage, region: vk.ImageResolve, src_format: vk.Format, dst_format: vk.Format) VkError!void {
     var blit_region: vk.ImageBlit = .{
         .src_offsets = .{ region.src_offset, region.src_offset },
         .src_subresource = region.src_subresource,
@@ -500,7 +518,7 @@ pub inline fn resolve(src: *const SoftImage, dst: *SoftImage, region: vk.ImageRe
     blit_region.dst_offsets[1].y += @intCast(region.extent.height);
     blit_region.dst_offsets[1].z += @intCast(region.extent.depth);
 
-    try blitRegion(src, dst, blit_region, .nearest);
+    try blitRegionWithFormats(src, dst, blit_region, .nearest, src_format, dst_format);
 }
 
 fn applyScaleAndClamp(base_color: F32x4, state: State, apply_srgb_convertion: bool) F32x4 {
@@ -532,6 +550,16 @@ fn applyScaleAndClamp(base_color: F32x4, state: State, apply_srgb_convertion: bo
     return color;
 }
 
+inline fn normalizedI8(value: u8) f32 {
+    const signed: i8 = @bitCast(value);
+    return @max(@as(f32, @floatFromInt(signed)) / @as(f32, @floatFromInt(std.math.maxInt(i8))), -1.0);
+}
+
+inline fn normalizedI16(value: u16) f32 {
+    const signed: i16 = @bitCast(value);
+    return @max(@as(f32, @floatFromInt(signed)) / @as(f32, @floatFromInt(std.math.maxInt(i16))), -1.0);
+}
+
 pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
     var c: F32x4 = .{ 0.0, 0.0, 0.0, 1.0 };
 
@@ -543,9 +571,9 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
 
         .r8_sint,
         .r8_snorm,
-        => c[0] = @as(f32, @floatFromInt(map[0])) / std.math.maxInt(i8),
+        => c[0] = normalizedI8(map[0]),
 
-        .r16_snorm => c[0] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map))) / std.math.maxInt(i16),
+        .r16_snorm => c[0] = normalizedI16(std.mem.bytesToValue(u16, map)),
         .r16_unorm => c[0] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map))) / std.math.maxInt(u16),
 
         .r8g8b8a8_sint,
@@ -570,15 +598,15 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
         .r8g8_sint,
         .r8g8_snorm,
         => {
-            c[0] = @as(f32, @floatFromInt(map[0])) / std.math.maxInt(i8);
+            c[0] = normalizedI8(map[0]);
-            c[1] = @as(f32, @floatFromInt(map[1])) / std.math.maxInt(i8);
+            c[1] = normalizedI8(map[1]);
         },
 
         .r8g8b8a8_snorm => {
-            c[0] = @as(f32, @floatFromInt(map[0])) / std.math.maxInt(i8);
+            c[0] = normalizedI8(map[0]);
-            c[1] = @as(f32, @floatFromInt(map[1])) / std.math.maxInt(i8);
+            c[1] = normalizedI8(map[1]);
-            c[2] = @as(f32, @floatFromInt(map[2])) / std.math.maxInt(i8);
+            c[2] = normalizedI8(map[2]);
-            c[3] = @as(f32, @floatFromInt(map[3])) / std.math.maxInt(i8);
+            c[3] = normalizedI8(map[3]);
         },
 
         .r4g4b4a4_unorm_pack16 => {
@@ -627,8 +655,8 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
         },
 
         .r16g16_snorm => {
-            c[0] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[0..]))) / std.math.maxInt(i16);
+            c[0] = normalizedI16(std.mem.bytesToValue(u16, map[0..]));
-            c[1] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[2..]))) / std.math.maxInt(i16);
+            c[1] = normalizedI16(std.mem.bytesToValue(u16, map[2..]));
         },
 
         .r16g16_unorm => {
@@ -666,10 +694,10 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
         .r16g16b16a16_sint,
         .r16g16b16a16_snorm,
         => {
-            c[0] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[0..]))) / std.math.maxInt(i16);
+            c[0] = normalizedI16(std.mem.bytesToValue(u16, map[0..]));
-            c[1] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[2..]))) / std.math.maxInt(i16);
+            c[1] = normalizedI16(std.mem.bytesToValue(u16, map[2..]));
-            c[2] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[4..]))) / std.math.maxInt(i16);
+            c[2] = normalizedI16(std.mem.bytesToValue(u16, map[4..]));
-            c[3] = @as(f32, @floatFromInt(std.mem.bytesToValue(u16, map[6..]))) / std.math.maxInt(i16);
+            c[3] = normalizedI16(std.mem.bytesToValue(u16, map[6..]));
         },
 
         .r16g16b16a16_sfloat => c = std.mem.bytesToValue(@Vector(4, f16), map),
@@ -704,10 +732,10 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
         .a8b8g8r8_snorm_pack32,
         => {
             const pack = std.mem.bytesToValue(@Vector(4, u8), map);
-            c[0] = @as(f32, @floatFromInt(pack[0])) / std.math.maxInt(i8);
+            c[0] = normalizedI8(pack[0]);
-            c[1] = @as(f32, @floatFromInt(pack[1])) / std.math.maxInt(i8);
+            c[1] = normalizedI8(pack[1]);
-            c[2] = @as(f32, @floatFromInt(pack[2])) / std.math.maxInt(i8);
+            c[2] = normalizedI8(pack[2]);
-            c[3] = @as(f32, @floatFromInt(pack[3])) / std.math.maxInt(i8);
+            c[3] = normalizedI8(pack[3]);
         },
 
         .a2b10g10r10_uint_pack32,
@@ -1093,37 +1121,55 @@ pub fn writeFloat4(c: F32x4, map: []u8, dst_format: vk.Format) void {
     }
 }
 
+inline fn signExtendI8(value: u8) u32 {
+    return @bitCast(@as(i32, @as(i8, @bitCast(value))));
+}
+
+inline fn signExtendI16(value: u16) u32 {
+    return @bitCast(@as(i32, @as(i16, @bitCast(value))));
+}
+
 pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
     var c: U32x4 = .{ 0, 0, 0, 1 };
 
     switch (src_format) {
-        .r8_sint,
         .r8_uint,
         .s8_uint,
         => c[0] = map[0],
 
-        .r16_sint,
+        .r8_sint => c[0] = signExtendI8(map[0]),
+
         .r16_uint,
         => c[0] = std.mem.bytesToValue(u16, map),
 
+        .r16_sint => c[0] = signExtendI16(std.mem.bytesToValue(u16, map)),
+
         .r32_sint,
         .r32_uint,
         => c[0] = std.mem.bytesToValue(u32, map),
 
-        .r8g8_sint,
         .r8g8_uint,
         => {
             c[0] = map[0];
             c[1] = map[1];
         },
 
-        .r16g16_sint,
+        .r8g8_sint => {
+            c[0] = signExtendI8(map[0]);
+            c[1] = signExtendI8(map[1]);
+        },
+
         .r16g16_uint,
         => {
             c[0] = std.mem.bytesToValue(u16, map[0..]);
             c[1] = std.mem.bytesToValue(u16, map[2..]);
         },
 
+        .r16g16_sint => {
+            c[0] = signExtendI16(std.mem.bytesToValue(u16, map[0..]));
+            c[1] = signExtendI16(std.mem.bytesToValue(u16, map[2..]));
+        },
+
         .r32g32_sint,
         .r32g32_uint,
         => {
@@ -1131,7 +1177,6 @@ pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
             c[1] = std.mem.bytesToValue(u32, map[4..]);
         },
 
-        .r8g8b8a8_sint,
         .r8g8b8a8_uint,
         => {
             c[0] = map[0];
@@ -1140,7 +1185,13 @@ pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
             c[3] = map[3];
         },
 
-        .r16g16b16a16_sint,
+        .r8g8b8a8_sint => {
+            c[0] = signExtendI8(map[0]);
+            c[1] = signExtendI8(map[1]);
+            c[2] = signExtendI8(map[2]);
+            c[3] = signExtendI8(map[3]);
+        },
+
         .r16g16b16a16_uint,
         => {
             c[0] = std.mem.bytesToValue(u16, map[0..2]);
@@ -1149,12 +1200,18 @@ pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
             c[3] = std.mem.bytesToValue(u16, map[6..8]);
         },
 
+        .r16g16b16a16_sint => {
+            c[0] = signExtendI16(std.mem.bytesToValue(u16, map[0..2]));
+            c[1] = signExtendI16(std.mem.bytesToValue(u16, map[2..4]));
+            c[2] = signExtendI16(std.mem.bytesToValue(u16, map[4..6]));
+            c[3] = signExtendI16(std.mem.bytesToValue(u16, map[6..8]));
+        },
+
         .r32g32b32a32_sint,
         .r32g32b32a32_uint,
         => c = std.mem.bytesToValue(U32x4, map),
 
         .a8b8g8r8_uint_pack32,
-        .a8b8g8r8_sint_pack32,
         .a8b8g8r8_unorm_pack32,
         .a8b8g8r8_snorm_pack32,
         => {
@@ -1165,6 +1222,14 @@ pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
             c[3] = pack[3];
         },
 
+        .a8b8g8r8_sint_pack32 => {
+            const pack = std.mem.bytesToValue(@Vector(4, u8), map);
+            c[0] = signExtendI8(pack[0]);
+            c[1] = signExtendI8(pack[1]);
+            c[2] = signExtendI8(pack[2]);
+            c[3] = signExtendI8(pack[3]);
+        },
+
         .a2b10g10r10_unorm_pack32,
         .a2b10g10r10_uint_pack32,
         => {

src/soft/device/fragment.zig

@@ -32,8 +32,9 @@ pub fn shaderInvocation(
     mutex.lock(io) catch return SpvRuntimeError.Unknown;
     defer mutex.unlock(io);
 
+    try rt.populatePushConstants(draw_call.renderer.state.push_constant_blob[0..]);
+
     const entry = try rt.getEntryPointByName(shader.entry);
-    const output_result = try rt.getResultByLocation(0, .output);
 
     for (0..spv.SPIRV_MAX_OUTPUT_LOCATIONS) |location| {
         const result_word = rt.getResultByLocation(@intCast(location), .input) catch |err| switch (err) {
@@ -54,8 +55,15 @@ pub fn shaderInvocation(
     };
 
     var outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8 = undefined;
+    @memset(std.mem.asBytes(&outputs), 0);
 
-    try rt.readOutput(std.mem.asBytes(&outputs), output_result);
+    for (0..spv.SPIRV_MAX_OUTPUT_LOCATIONS) |location| {
+        const result_word = rt.getResultByLocation(@intCast(location), .output) catch |err| switch (err) {
+            SpvRuntimeError.NotFound => continue,
+            else => return err,
+        };
+        try rt.readOutput(&outputs[location], result_word);
+    }
 
     try rt.flushDescriptorSets(allocator);
 

src/soft/device/rasterizer.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const vk = @import("vulkan");
 const base = @import("base");
 
 const clip = @import("clip.zig");
@@ -20,8 +21,15 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
     const pipeline_data = (renderer.state.pipeline orelse return VkError.InvalidHandleDrv).interface.mode.graphics;
     const topology = pipeline_data.input_assembly.topology;
 
-    const color_attachment = if (draw_call.render_pass.interface.subpasses[renderer.subpass_index].color_attachments) |attachments| attachments[0].attachment else return VkError.InvalidAttachmentDrv;
+    const color_attachments = draw_call.render_pass.interface.subpasses[renderer.subpass_index].color_attachments orelse return VkError.InvalidAttachmentDrv;
-    const render_target_view: *base.ImageView = draw_call.color_attachments[color_attachment];
+    const color_attachment_access = allocator.alloc(?common.RenderTargetAccess, color_attachments.len) catch return VkError.OutOfDeviceMemory;
+    @memset(color_attachment_access, null);
+
+    for (color_attachments, color_attachment_access) |attachment_ref, *access| {
+        if (attachment_ref.attachment == vk.ATTACHMENT_UNUSED)
+            continue;
+
+        const render_target_view: *base.ImageView = draw_call.color_attachments[attachment_ref.attachment];
         const render_target: *SoftImage = @alignCast(@fieldParentPtr("interface", render_target_view.image));
 
         const color_range = render_target_view.subresource_range;
@@ -33,13 +41,14 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
             color_range.base_array_layer,
         );
         const color_attachment_subresource_size = render_target.getLayerSize(color_range.aspect_mask);
-    const color_attachment_access: common.RenderTargetAccess = .{
+        access.* = .{
             .mutex = undefined,
             .base = try render_target.mapAsSliceWithAddedOffset(u8, color_attachment_subresource_offset, color_attachment_subresource_size),
             .row_pitch = render_target.getRowPitchMemSizeForMipLevelWithFormat(color_range.aspect_mask, color_range.base_mip_level, color_format),
             .texel_size = base.format.texelSize(color_format),
             .format = color_format,
         };
+    }
 
     const depth_attachment_view: ?*base.ImageView = if (draw_call.depth_attachment) |view| view else null;
     const depth_attachment: ?*SoftImage = if (depth_attachment_view) |view| @alignCast(@fieldParentPtr("interface", view.image)) else null;
@@ -60,7 +69,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
         break :blk .{
             .mutex = .init,
             .base = try depth_attachment.?.mapAsSliceWithAddedOffset(u8, attachment_subresource_offset, attachment_subresource_size),
-            .row_pitch = render_target.getRowPitchMemSizeForMipLevelWithFormat(depth_range.aspect_mask, depth_range.base_mip_level, depth_format),
+            .row_pitch = depth_attachment.?.getRowPitchMemSizeForMipLevelWithFormat(depth_range.aspect_mask, depth_range.base_mip_level, depth_format),
             .texel_size = base.format.texelSize(depth_format),
             .format = depth_format,
         };
@@ -80,7 +89,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                 v0,
                 v1,
                 v2,
-                &color_attachment_access,
+                color_attachment_access,
                 if (depth_attachment_access) |*access| access else null,
             );
         },
@@ -97,7 +106,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                     v0,
                     v1,
                     v2,
-                    &color_attachment_access,
+                    color_attachment_access,
                     if (depth_attachment_access) |*access| access else null,
                 );
             }
@@ -116,7 +125,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                         v0,
                         v1,
                         v2,
-                        &color_attachment_access,
+                        color_attachment_access,
                         if (depth_attachment_access) |*access| access else null,
                     );
                 } else {
@@ -127,7 +136,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                         v1,
                         v0,
                         v2,
-                        &color_attachment_access,
+                        color_attachment_access,
                         if (depth_attachment_access) |*access| access else null,
                     );
                 }
@@ -143,7 +152,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                 draw_call,
                 v0,
                 v1,
-                &color_attachment_access,
+                color_attachment_access,
                 if (depth_attachment_access) |*access| access else null,
             );
         },
@@ -157,7 +166,7 @@ pub fn processThenFragmentStage(renderer: *Renderer, allocator: std.mem.Allocato
                     draw_call,
                     v0,
                     v1,
-                    &color_attachment_access,
+                    color_attachment_access,
                     if (depth_attachment_access) |*access| access else null,
                 );
             }
@@ -173,7 +182,7 @@ fn clipTransformAndRasterizeLine(
     draw_call: *DrawCall,
     v0: *Vertex,
     v1: *Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 ) VkError!void {
     const clipped_line = (try clip.clipLine(allocator, v0, v1)) orelse return;
@@ -201,7 +210,7 @@ fn clipTransformAndRasterizeTriangle(
     v0: *Vertex,
     v1: *Vertex,
     v2: *Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 ) VkError!void {
     const clipped_polygon = try clip.clipTriangle(allocator, v0, v1, v2);
@@ -238,7 +247,7 @@ fn rasterizeTriangle(
     v0: *Vertex,
     v1: *Vertex,
     v2: *Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 ) VkError!void {
     if (try triangleIsCulled(renderer, v0, v1, v2))

src/soft/device/rasterizer/bresenham.zig

@@ -28,7 +28,7 @@ const RunData = struct {
     end_vertex: *Renderer.Vertex,
     start_step: usize,
     end_step: usize,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 };
 
@@ -37,7 +37,7 @@ pub fn drawLine(
     draw_call: *Renderer.DrawCall,
     v0: *Renderer.Vertex,
     v1: *Renderer.Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 ) VkError!void {
     const io = draw_call.renderer.device.interface.io();

src/soft/device/rasterizer/common.zig

@@ -101,10 +101,15 @@ inline fn interpolateF32x4(value0: F32x4, value1: F32x4, value2: F32x4, b0: f32,
     return (value0 * zm.f32x4s(b0)) + (value1 * zm.f32x4s(b1)) + (value2 * zm.f32x4s(b2));
 }
 
+inline fn fragmentOutputFloat4(output: [@sizeOf(F32x4)]u8, format: vk.Format) F32x4 {
+    const color = std.mem.bytesToValue(F32x4, &output);
+    return if (base.format.isSrgb(format)) zm.rgbToSrgb(color) else color;
+}
+
 pub fn writeToTargets(
     outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(F32x4)]u8,
     draw_call: *Renderer.DrawCall,
-    color_attachment_access: *const RenderTargetAccess,
+    color_attachment_access: []const ?RenderTargetAccess,
     depth_attachment_access: ?*RenderTargetAccess,
     x: usize,
     y: usize,
@@ -112,8 +117,6 @@ pub fn writeToTargets(
 ) VkError!void {
     const io = draw_call.renderer.device.interface.io();
 
-    const color_offset = @as(usize, @intCast(x)) * color_attachment_access.texel_size + @as(usize, @intCast(y)) * color_attachment_access.row_pitch;
-
     // After work depth test to avoid overwritten depth pixels during fragment invocations
     if (depth_attachment_access) |depth| {
         const depth_offset = @as(usize, @intCast(x)) * depth.texel_size + @as(usize, @intCast(y)) * depth.row_pitch;
@@ -125,18 +128,16 @@ pub fn writeToTargets(
         if (z >= depth_value[0])
             return;
         blitter.writeFloat4(zm.f32x4s(z), depth.base[depth_offset..], depth.format);
-
-        // Doubled line to stay inside the critical section
-        if (base.format.isUnnormalizedInteger(color_attachment_access.format)) {
-            blitter.writeInt4(std.mem.bytesToValue(U32x4, &outputs[0]), color_attachment_access.base[color_offset..], color_attachment_access.format);
-        } else {
-            blitter.writeFloat4(std.mem.bytesToValue(F32x4, &outputs[0]), color_attachment_access.base[color_offset..], color_attachment_access.format);
     }
+
+    for (color_attachment_access, 0..) |maybe_color, location| {
+        const color = maybe_color orelse continue;
+        const color_offset = @as(usize, @intCast(x)) * color.texel_size + @as(usize, @intCast(y)) * color.row_pitch;
+
+        if (base.format.isUnnormalizedInteger(color.format)) {
+            blitter.writeInt4(std.mem.bytesToValue(U32x4, &outputs[location]), color.base[color_offset..], color.format);
         } else {
-        if (base.format.isUnnormalizedInteger(color_attachment_access.format)) {
+            blitter.writeFloat4(fragmentOutputFloat4(outputs[location], color.format), color.base[color_offset..], color.format);
-            blitter.writeInt4(std.mem.bytesToValue(U32x4, &outputs[0]), color_attachment_access.base[color_offset..], color_attachment_access.format);
-        } else {
-            blitter.writeFloat4(std.mem.bytesToValue(F32x4, &outputs[0]), color_attachment_access.base[color_offset..], color_attachment_access.format);
         }
     }
 }

src/soft/device/rasterizer/edge_function.zig

@@ -26,7 +26,7 @@ const RunData = struct {
     v0: Renderer.Vertex,
     v1: Renderer.Vertex,
     v2: Renderer.Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 };
 
@@ -36,7 +36,7 @@ pub fn drawTriangle(
     v0: *Renderer.Vertex,
     v1: *Renderer.Vertex,
     v2: *Renderer.Vertex,
-    color_attachment_access: *const common.RenderTargetAccess,
+    color_attachment_access: []const ?common.RenderTargetAccess,
     depth_attachment_access: ?*common.RenderTargetAccess,
 ) VkError!void {
     const io = draw_call.renderer.device.interface.io();

src/vulkan/Sampler.zig

@@ -11,6 +11,11 @@ const Self = @This();
 pub const ObjectType: vk.ObjectType = .sampler;
 
 owner: *Device,
+mag_filter: vk.Filter,
+min_filter: vk.Filter,
+address_mode_u: vk.SamplerAddressMode,
+address_mode_v: vk.SamplerAddressMode,
+address_mode_w: vk.SamplerAddressMode,
 
 vtable: *const VTable,
 
@@ -20,9 +25,13 @@ pub const VTable = struct {
 
 pub fn init(device: *Device, allocator: std.mem.Allocator, info: *const vk.SamplerCreateInfo) VkError!Self {
     _ = allocator;
-    _ = info;
     return .{
         .owner = device,
+        .mag_filter = info.mag_filter,
+        .min_filter = info.min_filter,
+        .address_mode_u = info.address_mode_u,
+        .address_mode_v = info.address_mode_v,
+        .address_mode_w = info.address_mode_w,
         .vtable = undefined,
     };
 }