Bilinear Shader

[KrossX]

I dunno if it's a bug, but in D3D scaling seems to be filtered while not in OGL for me. So I made this simple shader to get filtered scaling in OGL.

Example:
native x1 - D3D, OGL, OGL + Shader
native x3 - D3D, OGL, OGL + Shader

Code:

void main()

{
float2 factor = uv0 * resolution.xy - float2(0.5);

const int2 coord = int2(factor);
const int2 dx = int2(1, 0);
const int2 dy = int2(0, 1);

float4 color  = texelFetch(samp9, int3(coord, 0), 0);
float4 color1 = texelFetch(samp9, int3(coord + dx, 0), 0);
float4 color2 = texelFetch(samp9, int3(coord + dy, 0), 0);
float4 color3 = texelFetch(samp9, int3(coord + dx + dy, 0), 0);

factor = fract(factor);

color = mix(mix(color, color1, factor.x), mix(color2, color3, factor.x), factor.y);

SetOutput(color);
}

[MayImilae]

You can used force texture filtering for that...

[degasus]

@MaJoR: No, I think he means on the last screen blit. This option is just for ingame texture usage.

iirc default should be linear filtering, but I'll look at it.

Edit: At least we try to do so.

[KrossX]

Yah, I checked that and makes me think it might be a driver bug. Since my build setup just fails, I went the easy way with the shader. =P

[Darkness Knight]

Hi KrossX =)

Salu2 - Darkness Knight.

[KrossX]

It's DK! Hello~ =D

PS: Sorry for the offtopicness.

[KrossX]

(02-25-2015, 04:22 PM)degasus Wrote: @MaJoR: No, I think he means on the last screen blit. This option is just for ingame texture usage.

iirc default should be linear filtering, but I'll look at it.

Edit: At least we try to do so.

Interestingly, forcing filtering does affect the last blit (and everything else). This lack of filtering doesn't happen with every title, but I've been messing around a bit (yay! it compiles) and adding glBindSampler(0, 0); after line 155 seems to do the trick. I suppose there's an active sampler overriding the texture params.

[degasus]

Woo, that sounds really bad. We should use the unit 9 ...

[KrossX]

Opened issue 8298. I should've started with testing previous versions... T_T