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Use Vertex Depth Range when zRange Exceeds farZ 

When the inverted depth range is unsupported and zRange is greater than farZ then min_depth becomes a negative value and far_depth will then exceed a depth of 1.0 (which is outside the scope of most backends and greater than GX_MAX_DEPTH of the console).

This happens when the backend supports depth clamping the min_depth is not clamped to zero.
This commit is contained in:
Patrick Ferry 2023-09-28 03:00:04 +01:00
parent 467c7435d1
commit 9e950c6959
1 changed files with 8 additions and 2 deletions
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8
Source/Core/VideoCommon/VertexShaderManager.cpp
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@ -168,9 +168,15 @@ bool VertexShaderManager::UseVertexDepthRange()
return true;
// If an inverted depth range is unsupported, we also need to check if the range is inverted.
if (!g_ActiveConfig.backend_info.bSupportsReversedDepthRange && xfmem.viewport.zRange < 0.0f)
if (!g_ActiveConfig.backend_info.bSupportsReversedDepthRange)
{
if (xfmem.viewport.zRange < 0.0f)
return true;
if (xfmem.viewport.zRange > xfmem.viewport.farZ)
return true;
}
// If an oversized depth range or a ztexture is used, we need to calculate the depth range
// in the vertex shader.
return fabs(xfmem.viewport.zRange) > 16777215.0f || fabs(xfmem.viewport.farZ) > 16777215.0f;