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port: grp.SaveScreenShot via next-frame swapchain readback + JPEG

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CPythonGraphic::SaveScreenShot queues a readback of the next presented
frame (ScreenShotHost -> VulkanWindow::request_frame); WriteScreenShot runs
the rest of 40250's function verbatim (X8R8G8B8 rows, SaveJPEG, EXIF tag).
jpeg_save is encoded with stb_image_write. SHGetSpecialFolderPath returns
$HOME/Documents (else cwd); CreateDirectory/_access/jpeg_save accept '\\'.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
shenlei
2026-09-30 12:43:03 +09:00
co-authored by Claude Opus 5.5
parent c21e012965
commit bda85eea50
17 changed files with 2211 additions and 12 deletions
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src/port/CMakeLists.txt
+5
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@@ -209,6 +209,11 @@ if(BUILD_TESTING AND CMAKE_SYSTEM_NAME STREQUAL CMAKE_HOST_SYSTEM_NAME)
target_link_libraries(port_spherelib_test PRIVATE port_platform)
add_test(NAME port.spherelib COMMAND $<TARGET_FILE:port_spherelib_test>)
# grp.SaveScreenShot: the host frame request and the 40250 JPEG write behind it.
add_executable(port_screenshot_test ${PROJECT_SOURCE_DIR}/tests/port/port_screenshot_test.cpp)
target_link_libraries(port_screenshot_test PRIVATE port_platform)
add_test(NAME port.screenshot COMMAND $<TARGET_FILE:port_screenshot_test>)
# 批次 2V1: Packet.h struct sizes against the classic wire layouts.
add_executable(port_packet_test ${PROJECT_SOURCE_DIR}/tests/port/port_packet_test.cpp
${PROJECT_SOURCE_DIR}/tests/port/port_packet_test_wire.cpp)