Render Passes
Posted: Sun Jun 23, 2024 16:31
I still haven't got my head around render passes in glsl it seems.
I am trying to downsample an image in steps of 1/2 each time, this shader gives no errors, but doesnt output anything.
also does $WIDTH mean the previous render pass size or the original input size? should it be $WIDTH/2 , $WIDTH/4 etc?
Is there any way of getting point sampling rather than linear?
I am trying to downsample an image in steps of 1/2 each time, this shader gives no errors, but doesnt output anything.
also does $WIDTH mean the previous render pass size or the original input size? should it be $WIDTH/2 , $WIDTH/4 etc?
Is there any way of getting point sampling rather than linear?
Code: Select all
/*{
"CREDIT": "",
"DESCRIPTION": "",
"CATEGORIES": [ "generator" ],
"INPUTS": [
{
"TYPE": "image",
"NAME": "tex0",
}
],
"PASSES": [
{
"TARGET" : "pass0",
},
{
"TARGET" : "pass1",
"WIDTH": "$WIDTH/2",
"HEIGHT": "$HEIGHT/2"
}
,
{
"TARGET" : "pass2",
"WIDTH": "$WIDTH/2",
"HEIGHT": "$HEIGHT/2"
}
]
}*/
void main() {
//vec2 uv = isf_FragNormCoord.xy ;
if (PASSINDEX == 0)
{
vec4 col = IMG_NORM_PIXEL(tex0, isf_FragNormCoord );
gl_FragColor = col;
}
if (PASSINDEX == 1){
gl_FragColor = IMG_NORM_PIXEL(pass0, isf_FragNormCoord );
}
else{
gl_FragColor = IMG_NORM_PIXEL(pass1, isf_FragNormCoord );
}
}