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[vk, rasterizer] Update sample location handling for MSAA configurations

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CamilleLaVey 2025-11-26 18:58:18 -04:00 • committed by Caio Oliveira
parent 75bfe1b4d8
commit 3b91d0b146
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3 changed files with 50 additions and 14 deletions
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27
src/video_core/texture_cache/samples_helper.h
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@ -1,15 +1,22 @@
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <cstddef>
#include <utility>
#include "common/assert.h"
#include "common/common_types.h"
#include "video_core/textures/texture.h"
namespace VideoCommon {
constexpr inline std::size_t MaxSampleLocationSlots = 16;
[[nodiscard]] inline std::pair<int, int> SamplesLog2(int num_samples) {
switch (num_samples) {
case 1:
@ -95,4 +102,24 @@ namespace VideoCommon {
return 1;
}
// NVN guarantees up to sixteen programmable sample slots shared across a repeating pixel grid
// (per the 0.7.0 addon release notes), so the grid dimensions shrink as MSAA increases.
[[nodiscard]] inline std::pair<u32, u32> SampleLocationGridSize(Tegra::Texture::MsaaMode msaa_mode) {
const int samples = NumSamples(msaa_mode);
switch (samples) {
case 1:
return {4u, 4u};
case 2:
return {4u, 2u};
case 4:
return {2u, 2u};
case 8:
return {2u, 1u};
case 16:
return {1u, 1u};
}
ASSERT_MSG(false, "Unsupported sample count for grid size={}", samples);
return {1u, 1u};
}
} // namespace VideoCommon