private static (ovrTextureSwapChain, Texture[]) CreateSwapchainD3D11(
ovrSession session,
GraphicsDevice gd,
ovrTextureSwapChainDesc desc)
{
ovrTextureSwapChain otsc;
Texture[] textures;
ovrResult result = ovr_CreateTextureSwapChainDX(session, gd.GetD3D11Info().Device, &desc, &otsc);
if (result != ovrResult.Success)
{
throw new VeldridException($"Failed to call ovr_CreateTextureSwapChainDX: {result}");
}
int textureCount = 0;
ovr_GetTextureSwapChainLength(session, otsc, &textureCount);
textures = new Texture[textureCount];
for (int i = 0; i < textureCount; ++i)
{
IntPtr nativeTexture;
ovr_GetTextureSwapChainBufferDX(session, otsc, i, s_d3d11Tex2DGuid, &nativeTexture);
textures[i] = gd.ResourceFactory.CreateTexture(
(ulong)nativeTexture,
OculusUtil.GetVeldridTextureDescription(desc));
}
return(otsc, textures);
}
private static (ovrTextureSwapChain, Texture[]) CreateSwapchainGL(
ovrSession session,
GraphicsDevice gd,
ovrTextureSwapChainDesc desc)
{
ovrTextureSwapChain otsc = default;
Texture[] textures = default;
ovrResult result = ovrResult.Success;
gd.GetOpenGLInfo().ExecuteOnGLThread(() =>
{
ovrTextureSwapChainDesc localDesc = desc;
localDesc.MiscFlags = localDesc.MiscFlags & ~(ovrTextureMiscFlags.DX_Typeless | ovrTextureMiscFlags.AllowGenerateMips);
localDesc.BindFlags = ovrTextureBindFlags.None;
ovrTextureSwapChain sc;
result = ovr_CreateTextureSwapChainGL(session, &localDesc, &sc);
if (result != ovrResult.Success)
{
return;
}
otsc = sc;
});
if (otsc.IsNull)
{
throw new VeldridException($"Failed to call ovr_CreateTextureSwapChainGL: {result}");
}
int textureCount = 0;
ovr_GetTextureSwapChainLength(session, otsc, &textureCount);
textures = new Texture[textureCount];
for (int i = 0; i < textureCount; ++i)
{
uint glID;
ovr_GetTextureSwapChainBufferGL(session, otsc, i, &glID);
textures[i] = gd.ResourceFactory.CreateTexture(
glID,
OculusUtil.GetVeldridTextureDescription(desc));
}
return(otsc, textures);
}