diff --git a/CMakeLists.txt b/CMakeLists.txt
index 55405eb..5dbcf55 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,12 @@ if (APPLE)
     enable_language(OBJC OBJCXX)
 endif ()
 
+# 设置全局着色器输出目录
+set(SHADER_OUTPUT_DIR "${CMAKE_BINARY_DIR}/shaders" CACHE PATH "着色器编译输出路径")
+# 设置全局着色器路径列表
+set(SHADER_SOURCE_DIRS "" CACHE STRING "着色器源文件路径列表")
+mark_as_advanced(SHADER_OUTPUT_DIR)
+
 set(MSDFGEN_USE_SKIA OFF CACHE BOOL "Use Skia for MSDFGen" FORCE)
 set(MSDFGEN_USE_VCPKG OFF CACHE BOOL "Use VCPKG for MSDFGen" FORCE)
 set(MSDFGEN_USE_OPENMP ON CACHE BOOL "Use OpenMP for MSDFGen" FORCE)
diff --git a/cmake/compile_shaders.cmake b/cmake/compile_shaders.cmake
index 6881004..8e40426 100644
--- a/cmake/compile_shaders.cmake
+++ b/cmake/compile_shaders.cmake
@@ -1,88 +1,16 @@
-function(compile_slang_shaders input_file stage entry_point)
-    # 保证输出目录存在
-    if (NOT DEFINED SHADER_OUTPUT_DIR)
-        message(FATAL_ERROR "SHADER_OUTPUT_DIR not defined")
-    endif ()
-    set(output_dir ${SHADER_OUTPUT_DIR})
+# 查找编译器和Python
+find_program(PYTHON_EXECUTABLE python)
+find_program(GLSLANG_VALIDATOR glslangValidator)
+find_program(SLANG_COMPILER slangc)
 
-    # 获取输出文件的基本名称
-    get_filename_component(filename ${input_file} NAME_WE)
-
-    # 定义根据阶段确定的配置
-    if(stage STREQUAL "vertex")
-        set(profile "vs_5_0")
-    elseif(stage STREQUAL "pixel")
-        set(profile "ps_5_0")
-    elseif (stage STREQUAL "comp")
-        set(profile "cs_5_0")
-    else()
-        message(FATAL_ERROR "Unsupported shader stage: ${stage}")
-    endif()
-
-    # 初始化一个列表来存储输出文件
-    set(output_files)
-    set(extra_args ${ARGN})
-    # 如果是debug模式，添加调试标志
-    if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-        list(APPEND extra_args "-g")
-    endif()
-
-    # 为每个后台创建自定义命令
-    if(LLGL_BUILD_RENDERER_OPENGL OR LLGL_BUILD_RENDERER_OPENGL_ES3 OR LLGL_BUILD_RENDERER_WEBGL)
-        set(output_file ${output_dir}/${filename}_${entry_point}.glsl)
-        add_custom_command(
-                OUTPUT ${output_file}
-                COMMAND slangc -target glsl -entry ${entry_point} -stage ${stage} ${extra_args} -o ${output_file} ${input_file} -DUSE_OPENGL=1 -DUV_FLIP=1
-                DEPENDS ${input_file}
-                COMMENT "Compiling ${input_file} to GLSL (${stage}, ${entry_point})"
-        )
-        list(APPEND output_files ${output_file})
-    endif()
-
-    if(LLGL_BUILD_RENDERER_DIRECT3D11 OR LLGL_BUILD_RENDERER_DIRECT3D12)
-        set(output_file ${output_dir}/${filename}_${entry_point}.dxbc)
-        add_custom_command(
-                OUTPUT ${output_file}
-                COMMAND slangc -target dxbc -profile ${profile} -entry ${entry_point} -stage ${stage} ${extra_args} -o ${output_file} ${input_file} -DUSE_DX=1
-                DEPENDS ${input_file}
-                COMMENT "Compiling ${input_file} to DXBC (${stage}, ${entry_point}) with profile ${profile}"
-        )
-        list(APPEND output_files ${output_file})
-    endif()
-
-    if(LLGL_BUILD_RENDERER_VULKAN)
-        set(output_file ${output_dir}/${filename}_${entry_point}.spirv)
-        add_custom_command(
-                OUTPUT ${output_file}
-                COMMAND slangc -target spirv -entry ${entry_point} -stage ${stage} ${extra_args} -o ${output_file} ${input_file} -DUSE_VULKAN=1 -DUV_FLIP=1
-                DEPENDS ${input_file}
-                COMMENT "Compiling ${input_file} to SPIR-V (${stage}, ${entry_point})"
-        )
-        list(APPEND output_files ${output_file})
-    endif()
-
-    if(LLGL_BUILD_RENDERER_METAL)
-        set(output_file ${output_dir}/${filename}_${entry_point}.metal)
-        add_custom_command(
-                OUTPUT ${output_file}
-                COMMAND slangc -target metal -entry ${entry_point} -stage ${stage} ${extra_args} -o ${output_file} ${input_file} -DUSE_METAL=1
-                DEPENDS ${input_file}
-                COMMENT "Compiling ${input_file} to Metal Shading Language (${stage}, ${entry_point})"
-        )
-        list(APPEND output_files ${output_file})
-    endif()
-
-    # 将输出文件添加到全局列表中
-    set_property(GLOBAL APPEND PROPERTY ALL_SHADER_OUTPUTS ${output_files})
+function(shader_compile_target INPUT_DIR)
+    # 将路径拼接到全局着色器路径列表中
+    list(APPEND SHADER_SOURCE_DIRS ${INPUT_DIR})
 endfunction()
 
-function(add_compile_shaders_target target_name before_target)
-    file(MAKE_DIRECTORY ${SHADER_OUTPUT_DIR})
-
-    get_property(ALL_SHADER_OUTPUTS GLOBAL PROPERTY ALL_SHADER_OUTPUTS)
-    add_custom_target(${target_name} ALL DEPENDS ${ALL_SHADER_OUTPUTS})
-    # 将编译着色器的目标添加到指定目标之前
-    add_dependencies(${before_target} ${target_name})
-    # 将ALL_SHADER_OUTPUTS清空
-    set_property(GLOBAL PROPERTY ALL_SHADER_OUTPUTS "")
-endfunction()
+# 添加自定义命令, 用于编译着色器, 调用scripts/compile_shaders.py
+add_custom_target(compile_aorii_shaders
+    COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/compile_shaders.py --input-dir ${SHADER_SOURCE_DIRS} --output-dir ${SHADER_OUTPUT_DIR}
+        COMMENT "Compiling shaders"
+    VERBATIM
+)
diff --git a/scripts/compile_shaders.py b/scripts/compile_shaders.py
new file mode 100644
index 0000000..f7ec6e5
--- /dev/null
+++ b/scripts/compile_shaders.py
@@ -0,0 +1,100 @@
+import argparse
+import os
+import subprocess
+import sys
+import re
+
+def find_shader_files(input_dir, extensions):
+    for root, _, files in os.walk(input_dir):
+        for file in files:
+            if any(file.endswith(ext) for ext in extensions):
+                yield os.path.join(root, file)
+
+def compile_glsl(input_file, output_dir, glslang_validator):
+    try:
+        base = os.path.splitext(os.path.basename(input_file))[0]
+        ext = os.path.splitext(input_file)[1][1:]
+        relative_path = os.path.relpath(os.path.dirname(input_file), args.input_dir)
+        output_subdir = os.path.join(output_dir, relative_path)
+        output_file = os.path.join(output_subdir, f"{base}.{ext}.spv")
+        
+        os.makedirs(output_subdir, exist_ok=True)
+        
+        cmd = [glslang_validator, "-V", input_file, "-o", output_file]
+        result = subprocess.run(cmd, check=True, capture_output=True, text=True)
+        print(f"Compiled GLSL: {input_file} -> {output_file}")
+        return True
+    except subprocess.CalledProcessError as e:
+        print(f"Error compiling {input_file}:")
+        print(e.stderr)
+        return False
+    except Exception as e:
+        print(f"Unexpected error with {input_file}: {str(e)}")
+        return False
+
+def find_slang_entries(input_file):
+    try:
+        with open(input_file, 'r') as f:
+            content = f.read()
+        pattern = r'\[shader\(\s*"(?:\w+)"\s*\)\]\s*\n\s*\w+\s+(\w+)\s*\('
+        return list(set(re.findall(pattern, content)))
+    except Exception as e:
+        print(f"Error parsing {input_file}: {str(e)}")
+        return []
+
+def compile_slang(input_file, output_dir, slangc):
+    try:
+        entries = find_slang_entries(input_file)
+        if not entries:
+            print(f"No entries found in {input_file}")
+            return False
+        
+        base = os.path.splitext(os.path.basename(input_file))[0]
+        relative_path = os.path.relpath(os.path.dirname(input_file), args.input_dir)
+        output_subdir = os.path.join(output_dir, relative_path)
+        os.makedirs(output_subdir, exist_ok=True)
+        
+        success = True
+        for entry in entries:
+            output_file = os.path.join(output_subdir, f"{base}_{entry}.spv")
+            cmd = [slangc, input_file, "-entry", entry, "-o", output_file, "-target", "spirv"]
+            try:
+                subprocess.run(cmd, check=True, capture_output=True, text=True)
+                print(f"Compiled Slang: {input_file}:{entry} -> {output_file}")
+            except subprocess.CalledProcessError as e:
+                print(f"Error compiling {input_file}:{entry}")
+                print(e.stderr)
+                success = False
+        return success
+    except Exception as e:
+        print(f"Unexpected error with {input_file}: {str(e)}")
+        return False
+
+def main():
+    parser = argparse.ArgumentParser(description="Compile shaders to SPIR-V")
+    parser.add_argument("--input-dir", required=True, help="Input directory containing shaders")
+    parser.add_argument("--output-dir", required=True, help="Output directory for SPIR-V files")
+    parser.add_argument("--glslang", default="glslangValidator", help="Path to glslangValidator")
+    parser.add_argument("--slangc", default="slangc", help="Path to slangc")
+    args = parser.parse_args()
+
+    glsl_ext = [".vert", ".frag", ".comp", ".geom", ".tesc", ".tese", ".glsl"]
+    slang_ext = [".slang"]
+
+    all_success = True
+    
+    # Compile GLSL
+    for file in find_shader_files(args.input_dir, glsl_ext):
+        if not compile_glsl(file, args.output_dir, args.glang):
+            all_success = False
+    
+    # Compile Slang
+    for file in find_shader_files(args.input_dir, slang_ext):
+        if not compile_slang(file, args.output_dir, args.slangc):
+            all_success = False
+
+    if not all_success:
+        sys.exit(1)
+
+if __name__ == "__main__":
+    main()
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index bce8a3e..eb20624 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -27,20 +27,7 @@ if (APPLE)
 endif ()
 
 # 添加编译shader的自定义命令
-if (NOT DEFINED SHADER_OUTPUT_DIR)
-    set(SHADER_OUTPUT_DIR ${CMAKE_BINARY_DIR}/shaders CACHE PATH "Output directory for compiled shaders")
-    message(STATUS "SHADER_OUTPUT_DIR not defined, using default: ${SHADER_OUTPUT_DIR}")
-endif ()
-function(compile_aorii_shader SHADER_FILE)
-    compile_slang_shaders("${CMAKE_CURRENT_SOURCE_DIR}/shader/${SHADER_FILE}.slang" "vertex" "vertex_main")
-    compile_slang_shaders("${CMAKE_CURRENT_SOURCE_DIR}/shader/${SHADER_FILE}.slang" "pixel" "pixel_main")
-endfunction()
-compile_aorii_shader(aorii_rect)
-compile_aorii_shader(aorii_rounded_rect)
-compile_aorii_shader(aorii_texture)
-compile_aorii_shader(aorii_segment)
-compile_aorii_shader(aorii_sdf_text)
-add_compile_shaders_target("compile_aorii_shaders" ${PROJECT_NAME})
+shader_compile_target(${CMAKE_CURRENT_SOURCE_DIR}/shaders)
 
 # 如果需要编译example, 添加自定义命令用于拷贝shader文件
 if (BUILD_EXAMPLE)
@@ -50,10 +37,10 @@ if (BUILD_EXAMPLE)
 
     # 添加自定义命令, 当外部目标compile_aorii_shaders被编译时, 将${SOURCE_DIR}文件复制到${DEST_DIR}
     add_custom_command(
-        TARGET compile_aorii_shaders
+        TARGET ${PROJECT_NAME}
         POST_BUILD
         COMMAND ${CMAKE_COMMAND} -E make_directory ${DEST_DIR}
         COMMAND ${CMAKE_COMMAND} -E copy_directory ${SOURCE_DIR} ${DEST_DIR}
         COMMENT "Copying shaders to ${DEST_DIR}"
     )
-endif ()
\ No newline at end of file
+endif ()
diff --git a/src/core/aorii.cpp b/src/core/aorii.cpp
index fb57f5b..b445d37 100644
--- a/src/core/aorii.cpp
+++ b/src/core/aorii.cpp
@@ -46,12 +46,20 @@ namespace aorii {
     }
 
 	int run(const init_info& in_init_info) {
-		if (!init(in_init_info.main_window_desc))
+		try {
+			if (!init(in_init_info.main_window_desc))
+				return -1;
+			while (!should_exit()) {
+				update();
+			}
+			destroy();
+		} catch (const std::exception& e) {
+			spdlog::error("运行时异常: {}", e.what());
+			return -1;
+		} catch (...) {
+			spdlog::error("未知异常");
 			return -1;
-		while (!should_exit()) {
-			update();
 		}
-		destroy();
 		return 0;
 	}
 
diff --git a/src/core/renderer/renderer.cpp b/src/core/renderer/renderer.cpp
index 011886a..02658af 100644
--- a/src/core/renderer/renderer.cpp
+++ b/src/core/renderer/renderer.cpp
@@ -162,6 +162,7 @@ bool aorii_renderer::init() {
         queue_create_info.setQueueCount(1);
         queue_create_info.setPQueuePriorities(&queue_priority);
         queue_create_infos.push_back(queue_create_info);
+        break;
     }
 
     vk::DeviceCreateInfo device_create_info{};
@@ -182,6 +183,7 @@ bool aorii_renderer::init() {
 }
 
 void aorii_renderer::destroy() {
+    spdlog::info("销毁渲染器");
     main_device->destroy();
     instance.destroy();
 }
@@ -203,26 +205,21 @@ const std::vector<device_handle>& aorii_renderer::get_compute_device() const {
     if (!compute_device.empty()) return compute_device;
 
     for (const auto& device: selector.compute_group) {
-        const float queue_priority = 1.0f;
+        constexpr float queue_priority = 1.0f;
         std::vector<vk::DeviceQueueCreateInfo> queue_create_infos;
-        const auto queue_families = device.getQueueFamilyProperties();
-        for (uint32_t i = 0; i < queue_families.size(); ++i) {
-            const bool queue_compute_support = static_cast<bool>(
-                queue_families[i].queueFlags & vk::QueueFlagBits::eCompute);
-            if (queue_compute_support) {
-                vk::DeviceQueueCreateInfo queue_create_info{};
-                queue_create_info.setQueueFamilyIndex(i);
-                queue_create_info.setQueueCount(1);
-                queue_create_info.setPQueuePriorities(&queue_priority);
-                queue_create_infos.push_back(queue_create_info);
-            }
+        const auto& families = device_selector::get_queue_families(device, vk::QueueFlagBits::eCompute);
+        for (const auto i: families) {
+            vk::DeviceQueueCreateInfo queue_create_info{};
+            queue_create_info.setQueueFamilyIndex(i);
+            queue_create_info.setQueueCount(1);
+            queue_create_info.setPQueuePriorities(&queue_priority);
+            queue_create_infos.push_back(queue_create_info);
         }
 
         device_handle handle;
         vk::DeviceCreateInfo device_create_info{};
         device_create_info.setQueueCreateInfos(queue_create_infos);
         handle.create_device(device, device_create_info);
-        spdlog::info("创建 Vulkan 计算设备: {}", handle.get_physical_device_name());
         compute_device.push_back(handle);
     }
     return compute_device;
diff --git a/src/core/renderer/renderer.h b/src/core/renderer/renderer.h
index 9a670ce..a9aa8ff 100644
--- a/src/core/renderer/renderer.h
+++ b/src/core/renderer/renderer.h
@@ -19,6 +19,8 @@ public:
     void destroy_surface(const vk::SurfaceKHR& in_surface) const;
     device_handle get_main_device() const { return main_device; }
     const std::vector<device_handle>& get_compute_device() const;
+
+    const auto& get_instance() const { return instance; }
 private:
     vk::Instance instance;
     device_selector selector;
diff --git a/src/core/renderer/renderer_types.h b/src/core/renderer/renderer_types.h
index d227004..0732ce1 100644
--- a/src/core/renderer/renderer_types.h
+++ b/src/core/renderer/renderer_types.h
@@ -1,5 +1,6 @@
 #pragma once
 #include <vulkan/vulkan.hpp>
+#include <spdlog/spdlog.h>
 
 struct device_handle {
     vk::PhysicalDevice physical_device;
@@ -17,6 +18,7 @@ struct device_handle {
     void create_device(const vk::PhysicalDevice in_physical_device, const vk::DeviceCreateInfo& in_create_info) {
         physical_device = in_physical_device;
         device = physical_device.createDevice(in_create_info);
+        spdlog::info("创建 Vulkan 设备: {}", get_physical_device_name());
     }
     void destroy_device() {
         if (device) {
diff --git a/src/core/shader/aorii_rounded_rect.slang b/src/core/shader/aorii_rounded_rect.slang
index 239af77..8f49ebc 100644
--- a/src/core/shader/aorii_rounded_rect.slang
+++ b/src/core/shader/aorii_rounded_rect.slang
@@ -14,6 +14,7 @@ struct PSInput {
     float4 color : COLOR; // 颜色
 };
 
+[shader("vertex")]
 PSInput vertex_main(VSInput input)
 {
     PSInput output;
@@ -32,6 +33,7 @@ float distance_from_rect_uv(float2 p, float corner_radius) {
     return length(max(q, 0.0)) + min(max(q.x, q.y), 0.0) - corner_radius;
 }
 
+[shader("pixel")]
 float4 pixel_main(PSInput input) : SV_Target
 {
     float2 p = uv_to_ndc(input.uv);
diff --git a/src/core/shader/aorii_segment.slang b/src/core/shader/aorii_segment.slang
index 5579038..4ba8cf6 100644
--- a/src/core/shader/aorii_segment.slang
+++ b/src/core/shader/aorii_segment.slang
@@ -6,6 +6,7 @@ struct PSInput {
     float4 color : COLOR; // 颜色
 };
 
+[[vk::binding(0), vk::set(0)]]
 cbuffer segment_buffer : register(b0) {
     matrix transform;
     float2 pos_a; // 线段的起点
diff --git a/src/core/shader/aorii_texture.slang b/src/core/shader/aorii_texture.slang
index e968c34..ec2eb1a 100644
--- a/src/core/shader/aorii_texture.slang
+++ b/src/core/shader/aorii_texture.slang
@@ -4,7 +4,7 @@ struct ParamBuffer
 {
     matrix transform;
 };
-ParameterBlock<ParamBuffer> param_buffer : register(b0);
+ParameterBlock<ParamBuffer> param_buffer;
 
 struct PSInput {
     float4 position : SV_POSITION; // 裁剪空间坐标
@@ -12,8 +12,8 @@ struct PSInput {
     float4 color : COLOR;  // 颜色
 };
 
-Texture2D<float4> texture : register(t0);
-SamplerState sampler : register(s0);
+Texture2D<float4> texture;
+SamplerState sampler;
 
 PSInput vertex_main(VSInput input)
 {
diff --git a/src/core/shader/test.frag b/src/core/shader/test.frag
new file mode 100644
index 0000000..3814cb5
--- /dev/null
+++ b/src/core/shader/test.frag
@@ -0,0 +1,9 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+layout(location = 0) in vec3 fragColor;
+layout(location = 0) out vec4 outColor;
+
+void main() {
+    outColor = vec4(fragColor, 1.0);
+}
diff --git a/src/core/shader/test.vert b/src/core/shader/test.vert
new file mode 100644
index 0000000..789b7dc
--- /dev/null
+++ b/src/core/shader/test.vert
@@ -0,0 +1,23 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+layout(location = 0) out vec3 fragColor;
+
+vec2 positions[3] = vec2[](
+    vec2(0.0, -0.5),
+    vec2(0.5, 0.5),
+    vec2(-0.5, 0.5)
+);
+vec3 colors[3] = vec3[](
+    vec3(1.0, 0.0, 0.0),
+    vec3(0.0, 1.0, 0.0),
+    vec3(0.0, 0.0, 1.0)
+);
+
+void main() {
+    gl_Position = vec4(positions[gl_VertexIndex], 0.0, 1.0);
+    fragColor = colors[gl_VertexIndex];
+}
\ No newline at end of file
diff --git a/src/core/shader/utils_vulkan.glsl b/src/core/shader/utils_vulkan.glsl
new file mode 100644
index 0000000..9736dc3
--- /dev/null
+++ b/src/core/shader/utils_vulkan.glsl
@@ -0,0 +1,112 @@
+// Copyright Take Vos 2021.
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
+
+/** logical and.
+ */
+bvec4 and(bvec4 lhs, bvec4 rhs)
+{
+    return bvec4(
+        lhs.x && rhs.x,
+        lhs.y && rhs.y,
+        lhs.z && rhs.z,
+        lhs.w && rhs.w
+    );
+}
+
+/** Check if the rectangle contains the point.
+ *
+ * @param rectangle A axis-aligned rectangle encoded as left-bottom=(x,y), right-top=(z,w)
+ * @param point A 2D point
+ * @return True is the point is inside the rectangle.
+ */
+bool contains(vec4 rectangle, vec2 point)
+{
+    return greaterThanEqual(point.xyxy, rectangle) == bvec4(true, true, false, false);
+}
+
+/** Convert coverage to a perceptional uniform alpha.
+ *
+ * This function takes into account the lightness of the full pixel, then
+ * determines based on this if the background is either black or white, or
+ * if linear conversion of coverage to alpha is needed.
+ *
+ * On black and white background we measure the target lightness of each sub-pixel
+ * then convert to target luminosity and eventually the alpha value.
+ *
+ * The alpha-component of the return value is calculated based on the full pixel
+ * lightness and from the green sub-pixel coverage.
+ *
+ * The full formula to convert coverage to alpha taking into account perceptional
+ * uniform lightness between foreground and background colors:
+ * ```
+ *    F = foreground color
+ *    B = background color
+ *    T = target color
+ *    c = coverage
+ *    a = alpha
+ *    T = mix(sqrt(F), sqrt(B), c) ^ 2
+ *
+ *    a = (T - B) / (F - B)       if F != B
+ *    a = c                       otherwise
+ * ```
+ *
+ * To simplify this formula and remove the division we fill in the foreground and background
+ * with black and white and the other way around:
+ * ```
+ *    a = c^2                     if F == 1 and B == 0
+ *    a = 2c - c^2                if F == 0 and B == 1
+ * ```
+ *
+ * Now we mix based on the foreground color, expecting the background color to mirror.
+ * ```
+ *    a = mix(2c - c^2, c^2, F^2)   if B^2 == 1 - F^2
+ * ```
+ *
+ * @param coverage The amount of coverage. Elements must be between 0.0 and 1.0
+ * @param foreground_sq The sqrt of the foreground. Elements must be between 0.0 and 1.0
+ * @return The alpha value for the red, blue, green, alpha color components.
+ */
+float coverage_to_alpha(float coverage, float sqrt_foreground)
+{
+    float coverage_sq = coverage * coverage;
+    float coverage_2 = coverage + coverage;
+    return mix(coverage_2 - coverage_sq, coverage_sq, sqrt_foreground);
+}
+
+/** Convert coverage to a perceptional uniform alpha.
+ *
+ * @see coverage_to_alpha(float, float)
+ */
+vec4 coverage_to_alpha(vec4 coverage, vec4 sqrt_foreground)
+{
+    vec4 coverage_sq = coverage * coverage;
+    vec4 coverage_2 = coverage + coverage;
+    return mix(coverage_2 - coverage_sq, coverage_sq, sqrt_foreground);
+}
+
+/** Multiply the alpha with the color.
+ *
+ * @param color The color+alpha without pre-multiplication.
+ * @return The color+alpha where the color is multiplied with the alpha.
+ */
+vec4 multiply_alpha(vec4 color)
+{
+    return vec4(color.rgb * color.a, color.a);
+}
+
+/** Convert RGB to Y.
+ */
+float rgb_to_y(vec3 color)
+{
+    vec3 tmp = color * vec3(0.2126, 0.7152, 0.0722);
+    return tmp.r + tmp.g + tmp.b;
+}
+
+/** Convert RGB to RGBY.
+ */
+vec4 rgb_to_rgby(vec3 color)
+{
+    return vec4(color, rgb_to_y(color));
+}
+
diff --git a/src/core/window/renderer_window.cpp b/src/core/window/renderer_window.cpp
index fd1197d..b0a8487 100644
--- a/src/core/window/renderer_window.cpp
+++ b/src/core/window/renderer_window.cpp
@@ -47,11 +47,21 @@ renderer_window::~renderer_window() {
 	}
 }
 
-void renderer_window::set_title(const std::wstring& in_title) const {
+void renderer_window::set_title(const std::string& in_title) const {
+	glfwSetWindowTitle(window, in_title.c_str());
+}
+
+void renderer_window::set_size(int in_width, int in_height) {
+	glfwSetWindowSize(window, in_width, in_height);
+	on_resize(in_width, in_height);
 }
 
 void renderer_window::close() const {
+	glfwSetWindowShouldClose(window, GLFW_TRUE);
+}
 
+void renderer_window::update() {
+	// swapchain->;
 }
 
 bool renderer_window::create_surface() {
diff --git a/src/core/window/renderer_window.h b/src/core/window/renderer_window.h
index be59125..cdaf3c2 100644
--- a/src/core/window/renderer_window.h
+++ b/src/core/window/renderer_window.h
@@ -30,7 +30,8 @@ public:
     explicit renderer_window(const window_desc& in_desc);
     virtual ~renderer_window();
 
-    void set_title(const std::wstring& in_title) const;
+    void set_title(const std::string& in_title) const;
+    void set_size(int in_width, int in_height);
 
     void close() const;
     bool should_close() const { return glfwWindowShouldClose(window); }
@@ -46,6 +47,8 @@ public:
         return vk::Extent2D(width, height);
     }
 
+    void update();
+
     bool create_surface();
     [[nodiscard]] auto get_surface() const { return surface; }
     bool create_swap_chain(const renderer_swapchain::create_info& in_create_info);