From 6245f795e9c4546cf4ef86b27bc764cc9a896195 Mon Sep 17 00:00:00 2001 From: Kae <80987908+Novaenia@users.noreply.github.com> Date: Sat, 31 May 2025 16:35:10 +1000 Subject: simple support for animated parallax textures --- source/rendering/StarEnvironmentPainter.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'source/rendering/StarEnvironmentPainter.cpp') diff --git a/source/rendering/StarEnvironmentPainter.cpp b/source/rendering/StarEnvironmentPainter.cpp index d95d968..197914e 100644 --- a/source/rendering/StarEnvironmentPainter.cpp +++ b/source/rendering/StarEnvironmentPainter.cpp @@ -251,6 +251,8 @@ void EnvironmentPainter::renderParallaxLayers( AssetPath first = layer.textures.first(); first.directives += layer.directives; + if (layer.frameNumber > 1) + first.subPath.emplace("0"); Vec2F parallaxSize = Vec2F(m_textureGroup->loadTexture(first)->size()); Vec2F parallaxPixels = parallaxSize * camera.pixelRatio(); @@ -320,6 +322,13 @@ void EnvironmentPainter::renderParallaxLayers( for (auto const& textureImage : layer.textures) { AssetPath withDirectives = textureImage; withDirectives.directives += layer.directives; + if (layer.frameNumber > 1) { + float time_within_cycle = (float)fmod(sky.epochTime, (double)layer.animationCycle); + float time_per_frame = layer.animationCycle / layer.frameNumber; + float frame_number = time_within_cycle / time_per_frame; + int frame = (layer.frameOffset + clamp(frame_number, 0, layer.frameNumber - 1)) % layer.frameNumber; + withDirectives.subPath.emplace(toString(frame)); + } if (auto texture = m_textureGroup->tryTexture(withDirectives)) { RectF drawRect = RectF::withSize(anchorPoint, subImage.size() * camera.pixelRatio()); primitives.emplace_back(std::in_place_type_t(), std::move(texture), -- cgit v1.2.3