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Generate scaling helper functions on IR (#4714)

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* Generate scaling helper functions on IR

* Delete unused code

* Split RewriteTextureSample and move gather bias add to an earlier pass

* Remove using

* Shader cache version bump
This commit is contained in:
gdkchan 2023-05-25 17:46:58 -03:00 • committed by GitHub
parent 2c9715acf6
commit 8f0c89ffd6
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GPG key ID: 4AEE18F83AFDEB23
25 changed files with 560 additions and 584 deletions
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84
src/Ryujinx.Graphics.Shader/CodeGen/Glsl/Instructions/InstGenMemory.cs
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@ -97,30 +97,6 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
texCallBuilder.Append(str);
}
string ApplyScaling(string vector)
{
if (context.Config.Stage.SupportsRenderScale() &&
texOp.Inst == Instruction.ImageLoad &&
!isBindless &&
!isIndexed)
{
// Image scales start after texture ones.
int scaleIndex = context.Config.GetTextureDescriptors().Length + context.Config.FindImageDescriptorIndex(texOp);
if (pCount == 3 && isArray)
{
// The array index is not scaled, just x and y.
vector = $"ivec3(Helper_TexelFetchScale(({vector}).xy, {scaleIndex}), ({vector}).z)";
}
else if (pCount == 2 && !isArray)
{
vector = $"Helper_TexelFetchScale({vector}, {scaleIndex})";
}
}
return vector;
}
if (pCount > 1)
{
string[] elems = new string[pCount];
@ -130,7 +106,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
elems[index] = Src(AggregateType.S32);
}
Append(ApplyScaling($"ivec{pCount}({string.Join(", ", elems)})"));
Append($"ivec{pCount}({string.Join(", ", elems)})");
}
else
{
@ -584,53 +560,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
}
}
string ApplyScaling(string vector)
{
if (intCoords)
{
if (context.Config.Stage.SupportsRenderScale() &&
!isBindless &&
!isIndexed)
{
int index = context.Config.FindTextureDescriptorIndex(texOp);
if (pCount == 3 && isArray)
{
// The array index is not scaled, just x and y.
vector = "ivec3(Helper_TexelFetchScale((" + vector + ").xy, " + index + "), (" + vector + ").z)";
}
else if (pCount == 2 && !isArray)
{
vector = "Helper_TexelFetchScale(" + vector + ", " + index + ")";
}
}
}
return vector;
}
string ApplyBias(string vector)
{
int gatherBiasPrecision = context.Config.GpuAccessor.QueryHostGatherBiasPrecision();
if (isGather && gatherBiasPrecision != 0)
{
// GPU requires texture gather to be slightly offset to match NVIDIA behaviour when point is exactly between two texels.
// Offset by the gather precision divided by 2 to correct for rounding.
if (pCount == 1)
{
vector = $"{vector} + (1.0 / (float(textureSize({samplerName}, 0)) * float({1 << (gatherBiasPrecision + 1)})))";
}
else
{
vector = $"{vector} + (1.0 / (vec{pCount}(textureSize({samplerName}, 0).{"xyz".Substring(0, pCount)}) * float({1 << (gatherBiasPrecision + 1)})))";
}
}
return vector;
}
Append(ApplyBias(ApplyScaling(AssemblePVector(pCount))));
Append(AssemblePVector(pCount));
string AssembleDerivativesVector(int count)
{
@ -750,7 +680,7 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
}
else
{
(TextureDescriptor descriptor, int descriptorIndex) = context.Config.FindTextureDescriptor(texOp);
TextureDescriptor descriptor = context.Config.FindTextureDescriptor(texOp);
bool hasLod = !descriptor.Type.HasFlag(SamplerType.Multisample) && descriptor.Type != SamplerType.TextureBuffer;
string texCall;
@ -767,14 +697,6 @@ namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
texCall = $"textureSize({samplerName}){GetMask(texOp.Index)}";
}
if (context.Config.Stage.SupportsRenderScale() &&
(texOp.Index < 2 || (texOp.Type & SamplerType.Mask) == SamplerType.Texture3D) &&
!isBindless &&
!isIndexed)
{
texCall = $"Helper_TextureSizeUnscale({texCall}, {descriptorIndex})";
}
return texCall;
}
}