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Vulkan: Add support for unrestricted depth range.

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CrossVR
2025-07-21 05:48:04 +09:00
parent dccd8709d8
commit 0ace5f5d3d
6 changed files with 35 additions and 10 deletions
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13
Source/Core/VideoCommon/BPFunctions.cpp
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@ -216,17 +216,12 @@ void SetScissorAndViewport()
height *= -1;
}
// The maximum depth that is written to the depth buffer should never exceed this value.
// This is necessary because we use a 2^24 divisor for all our depth values to prevent
// floating-point round-trip errors. However the console GPU doesn't ever write a value
// to the depth buffer that exceeds 2^24 - 1.
constexpr float GX_MAX_DEPTH = 16777215.0f / 16777216.0f;
if (!g_backend_info.bSupportsDepthClamp)
{
// There's no way to support oversized depth ranges in this situation. Let's just clamp the
// range to the maximum value supported by the console GPU and hope for the best.
min_depth = std::clamp(min_depth, 0.0f, GX_MAX_DEPTH);
max_depth = std::clamp(max_depth, 0.0f, GX_MAX_DEPTH);
min_depth = std::clamp(min_depth, 0.0f, MAX_EFB_DEPTH);
max_depth = std::clamp(max_depth, 0.0f, MAX_EFB_DEPTH);
}
if (VertexShaderManager::UseVertexDepthRange())
@ -235,13 +230,13 @@ void SetScissorAndViewport()
// Taking into account whether the depth range is inverted or not.
if (xfmem.viewport.zRange < 0.0f && g_backend_info.bSupportsReversedDepthRange)
{
min_depth = GX_MAX_DEPTH;
min_depth = MAX_EFB_DEPTH;
max_depth = 0.0f;
}
else
{
min_depth = 0.0f;
max_depth = GX_MAX_DEPTH;
max_depth = MAX_EFB_DEPTH;
}
}