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Fix incorrect fragment origin when YNegate is enabled (#4673)

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* Fix incorrect fragment origin when YNegate is enabled

* Shader cache version bump

* Do not update support buffer if shader does not read gl_FragCoord

* Pass unscaled viewport size to the support buffer
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gdkchan 2023-07-29 18:47:03 -03:00 • committed by GitHub
parent eb528ae0f0
commit f95b7c5877
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17 changed files with 207 additions and 26 deletions
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12
src/Ryujinx.Graphics.Shader/Instructions/InstEmitAttribute.cs
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@ -161,6 +161,18 @@ namespace Ryujinx.Graphics.Shader.Instructions
// FragCoord X/Y must be divided by the render target scale, if resolution scaling is active,
// because the shader code is not expecting scaled values.
res = context.FPDivide(res, context.Load(StorageKind.ConstantBuffer, SupportBuffer.Binding, Const((int)SupportBufferField.RenderScale), Const(0)));
if (op.Imm10 == AttributeConsts.PositionY && context.Config.Options.TargetApi != TargetApi.OpenGL)
{
// If YNegate is enabled, we need to flip the fragment coordinates vertically, unless
// the API supports changing the origin (only OpenGL does).
if (context.Config.GpuAccessor.QueryYNegateEnabled())
{
Operand viewportHeight = context.Load(StorageKind.ConstantBuffer, 0, Const((int)SupportBufferField.ViewportSize), Const(1));
res = context.FPSubtract(viewportHeight, res);
}
}
}
else if (op.Imm10 == AttributeConsts.FrontFacing && context.Config.GpuAccessor.QueryHostHasFrontFacingBug())
{