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libobs-winrt: Support window transparency for WGC 

WGC capture is at the compositor level, so it's less quirky than the
BitBlt path would be.

Rounded corners in Windows 11 work. LiveSplit shenanigans do not.
master
jpark37 2022-05-02 23:18:55 -07:00 committed by Jim
parent 346430e71f
commit aa2a819ad1
1 changed files with 6 additions and 3 deletions
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9
libobs-winrt/winrt-capture.cpp
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@ -661,13 +661,15 @@ extern "C" EXPORT void winrt_capture_render(struct winrt_capture *capture)
}
gs_effect_t *const effect =
obs_get_base_effect(OBS_EFFECT_OPAQUE);
obs_get_base_effect(OBS_EFFECT_DEFAULT);
gs_technique_t *tech =
gs_effect_get_technique(effect, tech_name);
const bool previous = gs_framebuffer_srgb_enabled();
gs_enable_framebuffer_srgb(true);
gs_enable_blending(false);
gs_blend_state_push();
gs_blend_function(GS_BLEND_ONE, GS_BLEND_INVSRCALPHA);
gs_texture_t *const texture = capture->texture;
gs_effect_set_texture_srgb(
@ -686,7 +688,8 @@ extern "C" EXPORT void winrt_capture_render(struct winrt_capture *capture)
}
gs_technique_end(tech);
gs_enable_blending(true);
gs_blend_state_pop();
gs_enable_framebuffer_srgb(previous);
}
}