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Workaround for Intel FrontFacing built-in variable bug (#2540)

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gdkchan 2021-08-11 18:01:06 -03:00 • committed by GitHub
parent 0a80a837cb
commit c3e2646f9e
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 161 additions and 113 deletions
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13
Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenMemory.cs
View file

@ -157,15 +157,18 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
offsetExpr = Enclose(offsetExpr, src2, Instruction.ShiftRightS32, isLhs: true);
var config = context.Config;
bool indexElement = !config.GpuAccessor.QueryHostHasVectorIndexingBug();
if (src1 is AstOperand oper && oper.Type == OperandType.Constant)
{
bool cbIndexable = context.Config.UsedFeatures.HasFlag(Translation.FeatureFlags.CbIndexing);
return OperandManager.GetConstantBufferName(oper.Value, offsetExpr, context.Config.Stage, cbIndexable);
bool cbIndexable = config.UsedFeatures.HasFlag(Translation.FeatureFlags.CbIndexing);
return OperandManager.GetConstantBufferName(oper.Value, offsetExpr, config.Stage, cbIndexable, indexElement);
}
else
{
string slotExpr = GetSoureExpr(context, src1, GetSrcVarType(operation.Inst, 0));
return OperandManager.GetConstantBufferName(slotExpr, offsetExpr, context.Config.Stage);
return OperandManager.GetConstantBufferName(slotExpr, offsetExpr, config.Stage, indexElement);
}
}
@ -314,7 +317,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
// 2D Array and Cube shadow samplers with LOD level or bias requires an extension.
// If the extension is not supported, just remove the LOD parameter.
if (isArray && isShadow && (is2D || isCube) && !context.Config.GpuAccessor.QuerySupportsTextureShadowLod())
if (isArray && isShadow && (is2D || isCube) && !context.Config.GpuAccessor.QueryHostSupportsTextureShadowLod())
{
hasLodBias = false;
hasLodLevel = false;
@ -322,7 +325,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
// Cube shadow samplers with LOD level requires an extension.
// If the extension is not supported, just remove the LOD level parameter.
if (isShadow && isCube && !context.Config.GpuAccessor.QuerySupportsTextureShadowLod())
if (isShadow && isCube && !context.Config.GpuAccessor.QueryHostSupportsTextureShadowLod())
{
hasLodLevel = false;
}

24
Ryujinx.Graphics.Shader/CodeGen/Glsl/OperandManager.cs
View file

@ -117,8 +117,13 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return $"{GetUbName(stage, slot, cbIndexable)}[{offset >> 2}].{GetSwizzleMask(offset & 3)}";
}
private static string GetVec4Indexed(string vectorName, string indexExpr)
private static string GetVec4Indexed(string vectorName, string indexExpr, bool indexElement)
{
if (indexElement)
{
return $"{vectorName}[{indexExpr}]";
}
string result = $"{vectorName}.x";
for (int i = 1; i < 4; i++)
{
@ -127,14 +132,14 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
return $"({result})";
}
public static string GetConstantBufferName(int slot, string offsetExpr, ShaderStage stage, bool cbIndexable)
public static string GetConstantBufferName(int slot, string offsetExpr, ShaderStage stage, bool cbIndexable, bool indexElement)
{
return GetVec4Indexed(GetUbName(stage, slot, cbIndexable) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3");
return GetVec4Indexed(GetUbName(stage, slot, cbIndexable) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3", indexElement);
}
public static string GetConstantBufferName(string slotExpr, string offsetExpr, ShaderStage stage)
public static string GetConstantBufferName(string slotExpr, string offsetExpr, ShaderStage stage, bool indexElement)
{
return GetVec4Indexed(GetUbName(stage, slotExpr) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3");
return GetVec4Indexed(GetUbName(stage, slotExpr) + $"[{offsetExpr} >> 2]", offsetExpr + " & 3", indexElement);
}
public static string GetOutAttributeName(AstOperand attr, ShaderConfig config)
@ -198,6 +203,15 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
case AttributeConsts.PositionY: return $"(gl_FragCoord.y / {DefaultNames.SupportBlockRenderScaleName}[0])";
case AttributeConsts.PositionZ: return "gl_FragCoord.z";
case AttributeConsts.PositionW: return "gl_FragCoord.w";
case AttributeConsts.FrontFacing:
if (config.GpuAccessor.QueryHostHasFrontFacingBug())
{
// This is required for Intel on Windows, gl_FrontFacing sometimes returns incorrect
// (flipped) values. Doing this seems to fix it.
return "(-floatBitsToInt(float(gl_FrontFacing)) < 0)";
}
break;
}
}

50
Ryujinx.Graphics.Shader/IGpuAccessor.cs
View file

@ -49,6 +49,36 @@
return 0;
}
bool QueryHostHasFrontFacingBug()
{
return false;
}
bool QueryHostHasVectorIndexingBug()
{
return false;
}
int QueryHostStorageBufferOffsetAlignment()
{
return 16;
}
bool QueryHostSupportsImageLoadFormatted()
{
return true;
}
bool QueryHostSupportsNonConstantTextureOffset()
{
return true;
}
bool QueryHostSupportsTextureShadowLod()
{
return true;
}
bool QueryIsTextureBuffer(int handle, int cbufSlot = -1)
{
return false;
@ -64,26 +94,6 @@
return InputTopology.Points;
}
int QueryStorageBufferOffsetAlignment()
{
return 16;
}
bool QuerySupportsImageLoadFormatted()
{
return true;
}
bool QuerySupportsNonConstantTextureOffset()
{
return true;
}
bool QuerySupportsTextureShadowLod()
{
return true;
}
TextureFormat QueryTextureFormat(int handle, int cbufSlot = -1)
{
return TextureFormat.R8G8B8A8Unorm;

4
Ryujinx.Graphics.Shader/Translation/Optimizations/GlobalToStorage.cs
View file

@ -71,7 +71,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
Operand baseAddrTrunc = Local();
Operand alignMask = Const(-config.GpuAccessor.QueryStorageBufferOffsetAlignment());
Operand alignMask = Const(-config.GpuAccessor.QueryHostStorageBufferOffsetAlignment());
Operation andOp = new Operation(Instruction.BitwiseAnd, baseAddrTrunc, baseAddrLow, alignMask);
@ -142,7 +142,7 @@ namespace Ryujinx.Graphics.Shader.Translation.Optimizations
Operand baseAddrTrunc = Local();
Operand alignMask = Const(-config.GpuAccessor.QueryStorageBufferOffsetAlignment());
Operand alignMask = Const(-config.GpuAccessor.QueryHostStorageBufferOffsetAlignment());
Operation andOp = new Operation(Instruction.BitwiseAnd, baseAddrTrunc, baseAddrLow, alignMask);

4
Ryujinx.Graphics.Shader/Translation/Rewriter.cs
View file

@ -93,7 +93,7 @@ namespace Ryujinx.Graphics.Shader.Translation
sbSlot = PrependOperation(Instruction.ConditionalSelect, inRange, Const(slot), sbSlot);
}
Operand alignMask = Const(-config.GpuAccessor.QueryStorageBufferOffsetAlignment());
Operand alignMask = Const(-config.GpuAccessor.QueryHostStorageBufferOffsetAlignment());
Operand baseAddrTrunc = PrependOperation(Instruction.BitwiseAnd, sbBaseAddrLow, alignMask);
Operand byteOffset = PrependOperation(Instruction.Subtract, addrLow, baseAddrTrunc);
@ -145,7 +145,7 @@ namespace Ryujinx.Graphics.Shader.Translation
bool hasOffset = (texOp.Flags & TextureFlags.Offset) != 0;
bool hasOffsets = (texOp.Flags & TextureFlags.Offsets) != 0;
bool hasInvalidOffset = (hasOffset || hasOffsets) && !config.GpuAccessor.QuerySupportsNonConstantTextureOffset();
bool hasInvalidOffset = (hasOffset || hasOffsets) && !config.GpuAccessor.QueryHostSupportsNonConstantTextureOffset();
bool isBindless = (texOp.Flags & TextureFlags.Bindless) != 0;

2
Ryujinx.Graphics.Shader/Translation/ShaderConfig.cs
View file

@ -145,7 +145,7 @@ namespace Ryujinx.Graphics.Shader.Translation
{
// When the formatted load extension is supported, we don't need to
// specify a format, we can just declare it without a format and the GPU will handle it.
if (GpuAccessor.QuerySupportsImageLoadFormatted())
if (GpuAccessor.QueryHostSupportsImageLoadFormatted())
{
return TextureFormat.Unknown;
}