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Better viewport flipping and depth mode detection method (#1556)

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* Use a better viewport flipping approach

* New approach to detect depth mode

* nit: Sort method on the OpenGL backend

* Adjust spacing on comment

* Unswap near and far parameters based on ScaleZ
This commit is contained in:
gdkchan
2020-09-19 19:46:49 -03:00
committed by GitHub
parent 4b1bed1b05
commit 1eea35554c
6 changed files with 101 additions and 136 deletions
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13
Ryujinx.Graphics.Shader/IGpuAccessor.cs
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@ -64,22 +64,9 @@
return true;
}
public bool QuerySupportsViewportSwizzle()
{
return true;
}
public TextureFormat QueryTextureFormat(int handle)
{
return TextureFormat.R8G8B8A8Unorm;
}
public int QueryViewportSwizzle(int component)
{
// Bit 0: Negate flag.
// Bits 2-1: Component.
// Example: 0b110 = W, 0b111 = -W, 0b000 = X, 0b010 = Y etc.
return component << 1;
}
}
}

29
Ryujinx.Graphics.Shader/Translation/EmitterContext.cs
View File

@ -73,34 +73,7 @@ namespace Ryujinx.Graphics.Shader.Translation
public void PrepareForReturn()
{
if (Config.Stage == ShaderStage.Vertex && (Config.Flags & TranslationFlags.VertexA) == 0)
{
// Here we attempt to implement viewport swizzle on the vertex shader.
// Perform permutation and negation of the output gl_Position components.
// Note that per-viewport swizzling can't be supported using this approach.
int swizzleX = Config.GpuAccessor.QueryViewportSwizzle(0);
int swizzleY = Config.GpuAccessor.QueryViewportSwizzle(1);
int swizzleZ = Config.GpuAccessor.QueryViewportSwizzle(2);
int swizzleW = Config.GpuAccessor.QueryViewportSwizzle(3);
bool nonStandardSwizzle = swizzleX != 0 || swizzleY != 2 || swizzleZ != 4 || swizzleW != 6;
if (!Config.GpuAccessor.QuerySupportsViewportSwizzle() && nonStandardSwizzle)
{
Operand[] temp = new Operand[4];
temp[0] = this.Copy(Attribute(AttributeConsts.PositionX));
temp[1] = this.Copy(Attribute(AttributeConsts.PositionY));
temp[2] = this.Copy(Attribute(AttributeConsts.PositionZ));
temp[3] = this.Copy(Attribute(AttributeConsts.PositionW));
this.Copy(Attribute(AttributeConsts.PositionX), this.FPNegate(temp[(swizzleX >> 1) & 3], (swizzleX & 1) != 0));
this.Copy(Attribute(AttributeConsts.PositionY), this.FPNegate(temp[(swizzleY >> 1) & 3], (swizzleY & 1) != 0));
this.Copy(Attribute(AttributeConsts.PositionZ), this.FPNegate(temp[(swizzleZ >> 1) & 3], (swizzleZ & 1) != 0));
this.Copy(Attribute(AttributeConsts.PositionW), this.FPNegate(temp[(swizzleW >> 1) & 3], (swizzleW & 1) != 0));
}
}
else if (Config.Stage == ShaderStage.Fragment)
if (Config.Stage == ShaderStage.Fragment)
{
if (Config.OmapDepth)
{