dhewm
Reflect Glasses effect problem.
This effect is present in Doom 3 Alpha Leaked, from 2002. So I've found a file for materials to implement this effect into the game.
The file is implemented in:
materials\glass.mtr
Here's the code:
textures/glass/outdoor_glass1
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
sort decal
qer_editorimage textures/glass/glass1
{
Program heatHaze.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .5 // magnitude of the distortion
fragmentProgram heatHaze.vfp
fragmentMap 0 _currentRender
fragmentMap 1 textures/sfx/vp1 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/glass1)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
}
{
blend filter
map textures/glass/outdoor_glass1fx
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass3
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass3
{
Program heatHazeWithMaskAndVertex.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .5 // magnitude of the distortion
fragmentMap 0 _currentRender
fragmentMap 1 textures/glass/breakyglass3 // the normal map for distortion
fragmentMap 2 textures/glass/4x4 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/breakyglass3)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass3_nvp
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass3
{
maskcolor
map makealpha(textures/glass/breakyglass3)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass2
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass2
{
Program heatHazeWithMaskAndVertex.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .5 // magnitude of the distortion
fragmentMap 0 _currentRender
fragmentMap 1 textures/glass/breakyglass2 // the normal map for distortion
fragmentMap 2 textures/glass/4x4 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/breakyglass2)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass2_nvp
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass2
{
maskcolor
map makealpha(textures/glass/breakyglass2)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass1_nvp
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass1
{
maskcolor
map makealpha(textures/glass/breakyglass1)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/breakyglass1
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/breakyglass1
{
Program heatHazeWithMaskAndVertex.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .5 // magnitude of the distortion
fragmentMap 0 _currentRender
fragmentMap 1 textures/glass/breakyglass1 // the normal map for distortion
fragmentMap 2 textures/glass/4x4 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/breakyglass1)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
vertexColor
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/mc_scannerglass
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/mc_scannerglass
{
maskcolor
map makealpha(textures/glass/mc_scannerglass)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/mc_scanner2
texgen reflect
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/glass1
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/glass1
{
Program heatHaze.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .4 // magnitude of the distortion
fragmentProgram heatHaze.vfp
fragmentMap 0 _currentRender
fragmentMap 1 textures/sfx/vp1 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/glass1)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/glass1_nvp
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/glass1
{
maskcolor
map makealpha(textures/glass/glass1)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/glass2_nvp
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/glass2
{
maskcolor
map makealpha(textures/glass/glass2)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
textures/glass/glass2
{
noSelfShadow
noshadows
twosided
translucent
glass
forceoverlays
qer_editorimage textures/glass/glass2
{
Program heatHaze.vfp
vertexParm 0 time * 0 , time * 0 // texture scrolling
vertexParm 1 .4 // magnitude of the distortion
fragmentProgram heatHaze.vfp
fragmentMap 0 _currentRender
fragmentMap 1 textures/sfx/vp1 // the normal map for distortion
}
{
maskcolor
map makealpha(textures/glass/glass2)
}
{
blend gl_dst_alpha, gl_one
maskalpha
cubeMap env/gen2
red Parm0
green Parm1
blue Parm2
texgen reflect
}
//reflect stage
{
mirrorRenderMap 512 512 //detail of reflection, higher # = better
blend blend
alpha 0.3 //lower # = more transparent
translate 0.5, 0.5
scale 0.5, 0.5
}
}
However, this have a problems causing crash when there's more 1 windows/glasses in one scene. So if anybody can suggest me a way to implement this, this will be great.
Also have a znear problem when you're close next to the windows, you can see how some part of the player model are cutting through the scene in the glass.
So, this have a lot of problems that need to be solved.
I'll make a MODDB channel to share this soon.
Take a look: https://i.imgur.com/vAEvfda.jpg https://i.imgur.com/kHRl2B7.jpg
Video: https://www.youtube.com/watch?v=YeGRvsxSWG4
I have a fix/workaround for this, but TBH it looks kinda shitty:
https://github.com/user-attachments/assets/c6ec03ef-5d3f-42dc-9bbe-d2f849f30a75
Note that "ghost" of the player to the right (well, you mostly see a big hand with a flashlight), which (I think) is the reflection of your reflection of your reflection, or something like that? Like, your reflection from the glass in front of you reflects on the glass on the other side of the room, and that reflects on the glass in front of you again, and for some reason became bigger in the process..
Hmm could also be that it's not a reflection of a reflection but that it looks so weird because R_MirrorRender() always renders into the same image
See #646. Not sure it's really correct now, sometimes things appear in the mirror that shouldn't.. but OTOH Doom3 is a horror game so that might be ok ¯\(ツ)/¯
Looks better than before though and, most importantly, doesn't crash anymore.
Updated video now that it's less broken:
https://github.com/user-attachments/assets/1e5546a0-abf4-4185-824b-5dcb82ffe5e7
uh! great! i cant wait this can be released on the next build soon 😍 also, thinking now on this... may....
be possible to appliying selective raytraicing only to glases??? i know this is another leage, but questioning is for free no? 🤩