Hello,
I read several tutorials about alphashaders and alpha blending and I got an idea of how it works.
Now I gave it a try and made a simple black room with an brush in it which had the shadertexture on it. Then I made another brush surrounding half of the first brush and gave it the alpha 00% texture so it should fade from the secondary into the primary texture.
But somehow it does not work out it always only shows the secondary texture at 100% and does not blend anything. I attatch a screenshot of the radiant to make clear what I did and here are the shader I am using (yes i added eimer to the shaderlist.txt):
eimer.shader
textures/eimer/rocktograss
{
qer_editorimage textures/eimer/rocktograss
surfaceparm landmine
surfaceparm grassstepsq3map_nonplanar
q3map_shadeangle 120
q3map_tcGen ivector ( 256 0 0 ) ( 0 256 0 )
q3map_bounceScale 0.2
{
map textures/egypt_floor_sd/sandygrass_b.tga
rgbGen identity
}
{
map textures/temperate_sd/rock_grayvar.tga // Secondary
blendFunc GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
rgbGen identity
alphaGen vertex
}
{
map $lightmap
blendFunc GL_DST_COLOR GL_ZERO
rgbGen identity
}
}
// ======================================================================
// alpha fade shaders
// © 2004 randy reddig
// http://www.shaderlab.com
// distribution, in part or in whole, in any medium, permitted
// ======================================================================
//
// These shaders are not fixed to this directory location, they can
// be moved around. They exist here for convenience only.
//
textures/eimer/alpha_000 // Primary texture ONLY
{
q3map_alphaMod volume
q3map_alphaMod set 0
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
textures/eimer/alpha_025
{
q3map_alphaMod volume
q3map_alphaMod set 0.25
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
textures/eimer/alpha_050 // Perfect mix of both Primary + Secondary
{
q3map_alphaMod volume
q3map_alphaMod set 0.50
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
textures/eimer/alpha_075
{
q3map_alphaMod volume
q3map_alphaMod set 0.75
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
textures/eimer/alpha_085
{
q3map_alphaMod volume
q3map_alphaMod set 0.85
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
textures/eimer/alpha_100 // Secondary texture ONLY
{
q3map_alphaMod volume
q3map_alphaMod set 1.0
surfaceparm nodraw
surfaceparm nonsolid
surfaceparm trans
qer_trans 0.75
}
I compiled the map with BSP -meta and run it ingame with g_gametype 2 , sv_pure 0 and devmap alphatest (mymaps name).
So I am really confused, I think it is all correct and I have no idea what to do =) I searched the forums but it just gave me other tutorials which told me to do the same or similar things.
Edit:
I again searched some tutorials and in one the guy made the brushes and the alphabrush a func_group … is that important? I now tried it aswell but still no blending texture =/
Best regards,
eiM
so which is the correct version as there are like 30 on the webscpae linked in the q3map2 forum