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Use index fragment shader output when dual source blend is enabled (#4404)

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* Use index fragment shader output when dual source blend is enabled

* Shader cache version bump

* Actually set DualSourceBlendEnabled to true

* Fix XML doc

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>
This commit is contained in:
gdkchan
2023-04-05 00:25:19 -03:00
committed by GitHub
parent 52d6f2e656
commit c532118d94
12 changed files with 141 additions and 25 deletions
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22
Ryujinx.Graphics.Shader/CodeGen/Glsl/Declarations.cs
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@ -612,6 +612,19 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
else
{
int usedAttributes = context.Config.UsedOutputAttributes;
if (context.Config.Stage == ShaderStage.Fragment && context.Config.GpuAccessor.QueryDualSourceBlendEnable())
{
int firstOutput = BitOperations.TrailingZeroCount(usedAttributes);
int mask = 3 << firstOutput;
if ((usedAttributes & mask) == mask)
{
usedAttributes &= ~mask;
DeclareOutputDualSourceBlendAttribute(context, firstOutput);
}
}
while (usedAttributes != 0)
{
int index = BitOperations.TrailingZeroCount(usedAttributes);
@ -690,6 +703,15 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
}
}
private static void DeclareOutputDualSourceBlendAttribute(CodeGenContext context, int attr)
{
string name = $"{DefaultNames.OAttributePrefix}{attr}";
string name2 = $"{DefaultNames.OAttributePrefix}{(attr + 1)}";
context.AppendLine($"layout (location = {attr}, index = 0) out vec4 {name};");
context.AppendLine($"layout (location = {attr}, index = 1) out vec4 {name2};");
}
private static void DeclareUsedOutputAttributesPerPatch(CodeGenContext context, HashSet<int> attrs)
{
foreach (int attr in attrs.Order())

23
Ryujinx.Graphics.Shader/CodeGen/Spirv/Declarations.cs
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@ -6,6 +6,7 @@ using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Numerics;
using static Spv.Specification;
namespace Ryujinx.Graphics.Shader.CodeGen.Spirv
@ -622,7 +623,27 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Spirv
else if (attr >= AttributeConsts.FragmentOutputColorBase && attr < AttributeConsts.FragmentOutputColorEnd)
{
int location = (attr - AttributeConsts.FragmentOutputColorBase) / 16;
context.Decorate(spvVar, Decoration.Location, (LiteralInteger)location);
if (context.Config.Stage == ShaderStage.Fragment && context.Config.GpuAccessor.QueryDualSourceBlendEnable())
{
int firstLocation = BitOperations.TrailingZeroCount(context.Config.UsedOutputAttributes);
int index = location - firstLocation;
int mask = 3 << firstLocation;
if ((uint)index < 2 && (context.Config.UsedOutputAttributes & mask) == mask)
{
context.Decorate(spvVar, Decoration.Location, (LiteralInteger)firstLocation);
context.Decorate(spvVar, Decoration.Index, (LiteralInteger)index);
}
else
{
context.Decorate(spvVar, Decoration.Location, (LiteralInteger)location);
}
}
else
{
context.Decorate(spvVar, Decoration.Location, (LiteralInteger)location);
}
}
if (!isOutAttr)

9
Ryujinx.Graphics.Shader/IGpuAccessor.cs
View File

@ -205,6 +205,15 @@ namespace Ryujinx.Graphics.Shader
return false;
}
/// <summary>
/// Queries dual source blend state.
/// </summary>
/// <returns>True if blending is enabled with a dual source blend equation, false otherwise</returns>
bool QueryDualSourceBlendEnable()
{
return false;
}
/// <summary>
/// Queries host about the presence of the FrontFacing built-in variable bug.
/// </summary>