437

psieg commented 10 years ago

merged

karyon commented 10 years ago

hi,

this is johannes from team mammut :) i also used the horde3d shader but found it's artifacts not so cool. after digging through the internet i found the original code here.

took about an hour to integrate it, it should go even faster if you don't make the mistakes i did.

in my opinion it looks a lot better, there are fewer artifacts now and the remaining ones are harder to notice.

to use it,

copy the shader
write some character at the beginning of line 47 in it to prevent a warning
create a named string

glow::createNamedString("/Fxaa3_11.h", new glowutils::File("path/to/shader/Fxaa3_11.h"));

and write a small shader-wrapper around it. here is the "wrapper" we use:

#version 410

#define FXAA_PC 1
#define FXAA_GLSL_130 1
#define FXAA_QUALITY__PRESET 13
#include </Fxaa3_11.h>

uniform sampler2D buf0;
smooth in vec2 v_uv;

layout (location = 0) out vec3 fragColor;

void main( void ) {
        vec2 rcpFrame = 1.0 / textureSize(buf0, 0);
        float fxaaQualitySubpix = 0.75;
        float fxaaQualityEdgeThreshold = 0.166;
        float fxaaQualityEdgeThresholdMin = 0.0625;
        fragColor = FxaaPixelShader(v_uv, vec4(0.0), buf0, buf0, buf0, rcpFrame, vec4(0.0), vec4(0.0), vec4(0.0), fxaaQualitySubpix, fxaaQualityEdgeThreshold, fxaaQualityEdgeThresholdMin, 0.0, 0.0, 0.0, vec4(0.0)).xyz;
}

karyon commented 10 years ago

PS: it requires the w channel of buf0 to contain luma values. to avoid changing other shaders, you can #define FXAA_GREEN_AS_LUMA 1, which works pretty good (but that depends on the colors you have on screen)

xchrdw commented 10 years ago

sounds interesting, thanks!

voxelinc / voxellancer

[RenderPass] FXAA #436

437