having some trouble and maybe its a new bug
outp.rgb = texture2D(texture1, vec2(0.0, 0.0)).rgb;
should only return whatever texel is at 0,0 but instead it is behaving like vTexcoords.xy, even if
vec4 vTexCoord = gl_TexCoord[0];
is commented out of the shader.
I can work around it but this shouldnt happen, i have use dexplicit coords before and they worked fine. Maybe its just early and i have fubared something elsewhere
scene code
clip
{
id: Clip
allow: pole
}
texture
{
id: Feedback
size: 1920, 1080
source: Empty/
//this is what causes the undocumented feature.
//normal behaviour is to grab a random texture from the directory but if the directory is empty
//it grabs the last sprite in previous frames camera node regardless of opacity or position.
}
texture
{
id: ST01
size: 1920, 1080
source: StartingTex/
}
texture
{
id: ST02
size: 1920, 1080
source: StartingTex2/
}
////////////////////////////////////////////////////////////////////////////////
framebuffer
{
id: StaticBuffer
size: 1920, 1080
pos: 960, 540
sprite
{
source: Feedback
}
}
framebuffer
{
id: RandomNumber
size: 1920, 1080
pos: 960, 540
sprite
{
source: ST01, 0
source: ST02, 1
source: StaticBuffer, 2
shader: Rnd.fsh
}
}
///////////////////////////////////
camera
{
type: 2D
size: 1920, 1080
pos: 960, 540
sprite
{
pos: 0,0
source: RandomNumber
}
sprite
{
opacity: 0.0
source: RandomNumber
}
}
The use of 2 texture directories for the ST01, ST02 was an attempt to fix the problem (in case it was fighting)
Rnd.fsh code
#version 120
uniform sampler2D texture0; //random picture starting point 1
uniform sampler2D texture1; //random picture starting point 2
uniform sampler2D texture2; //static buffer
vec4 vTexCoord = gl_TexCoord[0];
vec3 outp;
void main(void)
{
//vec4 Pc1 = texture2D(texture0, vec2(0.0, 0.0));
//vec4 Rn = texture2D(texture2, vTexCoord.xy);
// if (Rn.r == 1.0 && Rn.g == 1.0 && Rn.b == 1.0 && Rn.a == 1.0)
// {
outp.rgb = texture2D(texture1, vec2(0.0, 0.0)).rgb;
// }
gl_FragColor = vec4(outp.rgb , 1.0);
}
when its all not commented out the vec2 for outp should vec2(Pc1.r, Pc1.g) which should give you an offset between 0-1 for th elookup, just to add some more randomness really.
All the textures and framebuffers can be set to size: 1,1 and it kinds fixes it. How random it is will depend on how many textures are in the ST directory(prob dont need two as it was just an attempted fix which doesnt work)
This works but is limited by the number of textures you have in the source for ST
clip
{
id: Clip
//deny: top
allow: pole
}
texture
{
id: Feedback //this is what causes the undocumented feature.
//normal behaviour is to grab a random texture from the directory but if the directory is empty
//it grabs the last sprite in last frames camera node
size: 1, 1
source: Empty/
}
texture
{
id: ST
source: StartingTex/
}
////////////////////////////////////////////////////////////////////////////////
framebuffer
{
id: StaticBuffer
size: 1, 1
sprite
{
source: Feedback
}
}
framebuffer
{
id: RandomNumber
size: 1, 1
sprite
{
source: ST, 0
source: StaticBuffer, 1
shader: Rnd.fsh
}
}
///////////////////////////////////
camera {
type: 2D
size: 1920, 1080
pos: 960, 540
sprite
{
pos: 0,0
scale: 1000,1000
source: RandomNumber
}
sprite
{
opacity:0.0
source: RandomNumber
}
}
#version 120
uniform sampler2D texture0; //random picture starting point 1
uniform sampler2D texture1; //random picture starting point 2
vec4 vTexCoord = gl_TexCoord[0];
uniform float u_Elapsed;
vec3 rgn (vec2 c)
{
vec4 Pc2 = texture2D(texture0, vec2(c.r,c.g));
return Pc2.rgb;
}
void main(void)
{
vec4 Pc1 = texture2D(texture0, vTexCoord.xy);
vec4 Rn = texture2D(texture1, vTexCoord.xy);
if (Rn.r == 1.0 && Rn.g == 1.0 && Rn.b == 1.0 && Rn.a == 1.0)
{
Rn.rgb = rgn(Pc1.rg);
}
gl_FragColor = vec4(Rn.rgb , 1.0);
}
somewhat messy but you should get the idea
