子像素渲染

CMakeLists.txt

@@ -40,6 +40,7 @@ include(cmake/retrieve_files.cmake)
 include(cmake/detect_os.cmake)
 include(cmake/config_macos.cmake)
 include(cmake/compile_shaders.cmake)
+include(cmake/mingw_dll.cmake)
 
 # 如果是Debug模式, 添加宏定义
 if (CMAKE_BUILD_TYPE STREQUAL "Debug")

cmake/mingw_dll.cmake

@@ -0,0 +1,29 @@
+
+function(auto_copy_mingw_dll target)
+    if(MINGW)
+        # 获取MinGW目录
+        get_filename_component(MINGW_DIR ${CMAKE_CXX_COMPILER} PATH)
+
+        # 根据你的环境调整DLL列表
+        set(MINGW_DLLS
+                "libstdc++-6.dll"
+#                "libgcc_s_dw2-1.dll"
+                "libgcc_s_seh-1.dll"
+                "libwinpthread-1.dll"
+        )
+
+        foreach(DLL ${MINGW_DLLS})
+            # 检查文件是否存在
+            if(EXISTS "${MINGW_DIR}/${DLL}")
+                add_custom_command(TARGET ${target} POST_BUILD
+                        COMMAND ${CMAKE_COMMAND} -E copy_if_different
+                        "${MINGW_DIR}/${DLL}"
+                        "$<TARGET_FILE_DIR:${target}>"
+                        COMMENT "Copying ${DLL} to output directory"
+                        VERBATIM)
+            else()
+                message(WARNING "DLL not found: ${MINGW_DIR}/${DLL}")
+            endif()
+        endforeach()
+    endif()
+endfunction()

example/CMakeLists.txt

@@ -8,3 +8,5 @@ target_link_libraries(${PROJECT_NAME} PRIVATE mirage_app)
 if (MSVC)
     target_link_options(${PROJECT_NAME} PRIVATE "/SUBSYSTEM:WINDOWS" "/ENTRY:mainCRTStartup")
 endif()
+
+auto_copy_mingw_dll(${PROJECT_NAME})

example/src/main.cpp

@@ -10,7 +10,7 @@ int main(int argc, char* argv[]) {
 	mirage_app::get().init();
 
 	auto& manager = font_manager::instance();
-	manager.add_font(L"C:/Users/46944/AppData/Local/Microsoft/Windows/Fonts/MapleMono-NF-CN-Regular.ttf");
+	// manager.add_font(L"C:/Users/46944/AppData/Local/Microsoft/Windows/Fonts/MapleMono-NF-CN-Regular.ttf");
 	manager.add_font(L"C:/Windows/Fonts/msyh.ttc");
 	manager.add_font(L"C:/Windows/Fonts/seguiemj.ttf");
 

src/mirage_render/font/font_renderer/standard_bitmap_renderer.cpp

@@ -14,7 +14,11 @@ std::optional<bitmap_t> standard_bitmap_renderer_t::render_bitmap(
 
 	// 获取字形边界
 	int x0, y0, x1, y1;
-	stbtt_GetGlyphBitmapBox(&font_info, glyph_index, scale, scale, &x0, &y0, &x1, &y1);
+	stbtt_GetGlyphBitmapBoxSubpixel(&font_info,
+		glyph_index,
+		scale, scale,
+		0.5f, 0,
+		&x0, &y0, &x1, &y1);
 
 	const int width = x1 - x0;
 	const int height = y1 - y0;
@@ -33,11 +37,12 @@ std::optional<bitmap_t> standard_bitmap_renderer_t::render_bitmap(
 	bitmap.data.resize(width * height);
 
 	// 渲染字形
-	stbtt_MakeGlyphBitmap(
+	stbtt_MakeGlyphBitmapSubpixel(
 		&font_info,
 		bitmap.data.data(),
 		width, height, width,
 		scale, scale,
+		0.5f, 0,
 		glyph_index
 	);
 

src/mirage_render/shaders/mirage_text.slang

@@ -31,5 +31,7 @@ PSInput vertex_main(VSInput input)
 float4 pixel_main(PSInput input) : SV_Target
 {
     float4 color = texture.Sample(textureSampler, input.uv);
-    return float4(color.r) * input.color;
+    float4 final_color = input.color;
+    final_color.a *= color.r;
+    return final_color;
 }