resolve_scissor_rect()

vk::Rect2D MayaFlux::Buffers::RenderProcessor::resolve_scissor_rect ( uint32_t  width, uint32_t  height  ) const

protectednoexcept

Resolve the active scissor against a live framebuffer size.

Full framebuffer when unset.

Definition at line 610 of file RenderProcessor.cpp.

{
    if (!m_scissor) {
        return { { 0, 0 }, { width, height } };
    }
 
    const auto& bounds = m_scissor->bounds;
    const auto fw = static_cast<float>(width);
    const auto fh = static_cast<float>(height);
 
    const float x0 = std::clamp((bounds.min.x * 0.5F + 0.5F) * fw, 0.F, fw);
    const float x1 = std::clamp((bounds.max.x * 0.5F + 0.5F) * fw, 0.F, fw);
    const float y0 = std::clamp((1.F - bounds.max.y) * 0.5F * fh, 0.F, fh);
    const float y1 = std::clamp((1.F - bounds.min.y) * 0.5F * fh, 0.F, fh);
 
    const auto px = static_cast<int32_t>(x0);
    const auto py = static_cast<int32_t>(y0);
    const auto pw = static_cast<uint32_t>(x1 - x0);
    const auto ph = static_cast<uint32_t>(y1 - y0);
 
    return { { px, py }, { pw, ph } };
}

References height, ph, pw, px, py, and width.