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pcsx2
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GS-d3d: Check each channel individually if it overflows and do corrections.

This commit is contained in:
lightningterror 2023-02-21 17:49:46 +01:00
parent 2eb11ded52
commit 7f7950cd6b
1 changed files with 11 additions and 10 deletions
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21
bin/resources/shaders/dx11/tfx.fx
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@ -763,8 +763,10 @@ void ps_color_clamp_wrap(inout float3 C)
}
}
void ps_blend(inout float4 Color, inout float As, float2 pos_xy)
void ps_blend(inout float4 Color, inout float4 As_rgba, float2 pos_xy)
{
float As = As_rgba.a;
if (SW_BLEND)
{
// PABE
@ -813,15 +815,14 @@ void ps_blend(inout float4 Color, inout float As, float2 pos_xy)
{
// Replace Af with As so we can do proper compensation for Alpha.
if (PS_BLEND_C == 2)
As = Af;
As_rgba = (float4)Af;
// Subtract 1 for alpha to compensate for the changed equation,
// if c.rgb > 255.0f then we further need to adjust alpha accordingly,
// we pick the lowest overflow from all colors because it's the safest,
// we divide by 255 the color because we don't know Cd value,
// changed alpha should only be done for hw blend.
float min_color = min(min(Color.r, Color.g), Color.b);
float alpha_compensate = max(1.0f, min_color / 255.0f);
As -= alpha_compensate;
float3 alpha_compensate = max((float3)1.0f, Color.rgb / (float3)255.0f);
As_rgba.rgb -= alpha_compensate;
}
else if (PS_CLR_HW == 2)
{
@ -920,15 +921,15 @@ PS_OUTPUT ps_main(PS_INPUT input)
C.a = 128.0f;
}
float alpha_blend;
float4 alpha_blend;
if (PS_BLEND_C == 1 && PS_CLR_HW > 3)
{
float4 RT = trunc(RtTexture.Load(int3(input.p.xy, 0)) * 255.0f + 0.1f);
alpha_blend = RT.a / 128.0f;
alpha_blend = (float4)(RT.a / 128.0f);
}
else
{
alpha_blend = C.a / 128.0f;
alpha_blend = (float4)(C.a / 128.0f);
}
// Alpha correction
@ -978,12 +979,12 @@ PS_OUTPUT ps_main(PS_INPUT input)
#if !PS_NO_COLOR
output.c0 = PS_HDR ? float4(C.rgb / 65535.0f, C.a / 255.0f) : C / 255.0f;
#if !PS_NO_COLOR1
output.c1 = (float4)(alpha_blend);
output.c1 = alpha_blend;
#endif
#if PS_NO_ABLEND
// write alpha blend factor into col0
output.c0.a = alpha_blend;
output.c0.a = alpha_blend.a;
#endif
#if PS_ONLY_ALPHA
// rgb isn't used