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wg/gl: add composition blend mode

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Set the scene to use Composition mode so that it generates a pre-composition image, and then normal blend with destination.

https://github.com/thorvg/thorvg/pull/3621
This commit is contained in:
Sergii Liebodkin 2025-07-24 16:03:03 +03:00
parent 9369642642
commit 156edad6c5
2 changed files with 2 additions and 5 deletions
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5
src/renderer/gl_engine/tvgGlRenderer.cpp
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@ -980,10 +980,7 @@ const RenderSurface* GlRenderer::mainSurface()
bool GlRenderer::blend(BlendMethod method) bool GlRenderer::blend(BlendMethod method)
{ {
if (method == mBlendMethod) return true; mBlendMethod = (method == BlendMethod::Composition ? BlendMethod::Normal : method);
mBlendMethod = method;
return true; return true;
} }

2
src/renderer/wg_engine/tvgWgRenderer.cpp
View file

@ -283,7 +283,7 @@ RenderRegion WgRenderer::region(RenderData data)
bool WgRenderer::blend(BlendMethod method) bool WgRenderer::blend(BlendMethod method)
{ {
mBlendMethod = method; mBlendMethod = (method == BlendMethod::Composition ? BlendMethod::Normal : method);
return true; return true;
} }