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vk: Enable shading rate hack for all GPUs

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- This is a hack, ideally we should be using coverage-based masking when writing the exploded texture.
- We do not have access to the fragment coverage mask and it is non-trivial to integrate it in a competent manner.
This commit is contained in:
kd-11 2022-01-14 01:47:15 +03:00 committed by kd-11
parent f526027778
commit d6aa834b5f
1 changed files with 4 additions and 8 deletions
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12
rpcs3/Emu/RSX/VK/VKGSRender.cpp
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@ -1737,14 +1737,10 @@ bool VKGSRender::load_program()
rsx::method_registers.msaa_alpha_to_coverage_enabled(),
alpha_to_one_enable);
if (const auto chip_family = vk::get_chip_family();
chip_family == vk::chip_class::AMD_navi1x ||
chip_family == vk::chip_class::AMD_navi2x)
{
// NAVI family has a GPU bug with MSAA where shading rate is not correctly initialized if left disabled
// Manually initialize it and set it to spec default (full shading)
properties.state.set_multisample_shading_rate(1.f);
}
// A problem observed on multiple GPUs is that interior geometry edges can resolve 0 samples unless we force shading rate of 1.
// For whatever reason, the way MSAA images are 'resolved' on PS3 bypasses this issue.
// NOTE: We do not do image resolve at all, the output is merely 'exploded' and the guest application is responsible for doing the resolve in software as it is on real hardware.
properties.state.set_multisample_shading_rate(1.f);
}
properties.renderpass_key = m_current_renderpass_key;