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[Vulkan] Honor guest depth clear state (#290)

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This commit is contained in:
kuba
2026-07-17 01:29:53 +02:00
committed by GitHub
parent 2129a12684
commit dabf723b3e
4 changed files with 150 additions and 19 deletions
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src/SharpEmu.Libs/Agc/AgcExports.cs
+14 -10
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@@ -121,6 +121,7 @@ public static partial class AgcExports
private const uint CbBlend0Control = 0x1E0;
private const uint PaScModeCntl0 = 0x292;
// GFX10 DB context registers (register byte address minus 0x28000, / 4).
private const uint DbRenderControl = 0x000;
private const uint DbDepthView = 0x002;
private const uint DbDepthSizeXy = 0x007;
private const uint DbDepthClear = 0x00B;
@@ -5291,7 +5292,7 @@ public static partial class AgcExports
var hasDepthOnlyCandidate = hasExportShader &&
!hasPixelShader &&
depthTarget is not null &&
(depthState.TestEnable || depthState.WriteEnable);
(depthState.TestEnable || depthState.WriteEnable || depthState.ClearEnable);
if (hasDepthOnlyCandidate &&
TryCreateTranslatedDepthOnlyGuestDraw(
ctx,
@@ -6652,27 +6653,30 @@ public static partial class AgcExports
// DB_DEPTH_CONTROL (context register 0x200): Z_ENABLE bit1, Z_WRITE_ENABLE
// bit2, ZFUNC bits[6:4] (GCN compare, matches Vulkan CompareOp ordering).
// DB_RENDER_CONTROL (context register 0x000): DEPTH_CLEAR_ENABLE bit0.
private const uint DbDepthControl = 0x200;
private static GuestDepthState DecodeDepthState(
internal static GuestDepthState DecodeDepthState(
IReadOnlyDictionary<uint, uint> registers)
{
if (!registers.TryGetValue(DbDepthControl, out var control))
{
return GuestDepthState.Default;
}
var hasDepthControl = registers.TryGetValue(DbDepthControl, out var control);
registers.TryGetValue(DbRenderControl, out var renderControl);
var testEnable = (control & 0x2u) != 0;
var writeEnable = (control & 0x4u) != 0;
var compareOp = (control >> 4) & 0x7u;
return new GuestDepthState(testEnable, writeEnable, compareOp);
var compareOp = hasDepthControl
? (control >> 4) & 0x7u
: GuestDepthState.Default.CompareOp;
var clearEnable = (renderControl & 0x1u) != 0;
return new GuestDepthState(testEnable, writeEnable, compareOp, clearEnable);
}
private static GuestDepthTarget? DecodeDepthTarget(
IReadOnlyDictionary<uint, uint> registers)
{
var depthState = DecodeDepthState(registers);
if (!depthState.TestEnable && !depthState.WriteEnable)
if (!depthState.TestEnable &&
!depthState.WriteEnable &&
!depthState.ClearEnable)
{
return null;
}