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Fix MSAA blit into a multisampled destination and stale MSAA resolve. (#3921)

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This commit is contained in:
Branimir Karadžić
2026-08-23 04:44:43 +00:00
committed by GitHub
parent dd961560d5
commit 780f7bf00a
6 changed files with 135 additions and 20 deletions
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src/renderer_d3d11.cpp
+12 -3
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@@ -5442,7 +5442,7 @@ namespace bgfx { namespace d3d11
for (uint32_t ii = _layer, end = _layer + _numLayers; ii < end; ++ii)
{
const UINT resource = _mip + (ii * m_numMips);
deviceCtx->ResolveSubresource(m_texture2d, resource, m_rt, resource, resolveFormat);
deviceCtx->ResolveSubresource(m_texture2d, resource, m_rt, ii, resolveFormat);
}
}
@@ -6122,6 +6122,15 @@ namespace bgfx { namespace d3d11
const TextureD3D11& src = m_textures[blit.m_src.idx];
const TextureD3D11& dst = m_textures[blit.m_dst.idx];
const bool srcReadsMsaaRt = NULL != src.m_rt && dst.isMsaaSurface();
if (NULL != src.m_rt
&& !srcReadsMsaaRt
&& 0 == blit.m_srcMip)
{
src.resolve(BGFX_RESOLVE_NONE, blit.m_srcZ, 1, 0);
}
if ( src.isMsaaSurface()
&& !dst.isMsaaSurface()
&& TextureD3D11::Texture3D != src.m_type)
@@ -6229,7 +6238,7 @@ namespace bgfx { namespace d3d11
, "When blitting depthstencil surface, source resolution must match destination."
);
const bool msaaToMsaa = src.isMsaaSurface() && dst.isMsaaSurface();
const bool msaaToMsaa = (src.isMsaaSurface() || srcReadsMsaaRt) && dst.isMsaaSurface();
const bool wholeSubResource = depthStencil || msaaToMsaa;
const D3D11_BOX box =
@@ -6251,7 +6260,7 @@ namespace bgfx { namespace d3d11
, wholeSubResource ? 0 : blit.m_dstX
, wholeSubResource ? 0 : blit.m_dstY
, 0
, src.m_ptr
, srcReadsMsaaRt ? src.m_rt : src.m_ptr
, srcZ*src.m_numMips+blit.m_srcMip
, wholeSubResource ? NULL : &box
);