[jME Tutorial 2-4] Simple Color Shader in the jMonkeyEngine Video Lecture | jMonkeyEngine Shader Tutorial: A Complete Tutorial - Game Development

okay before we start you need to make
sure you've got the GL SL plug in to the
other tools plugins should be in
available plugins and it should say GS
glsl editor i've already installed it so
if you just click that in your available
plugins and download that you might need
to restart Jamie and mushroom and after
you've done that go to the project
assets folder I'm just going to put all
of mine and to the material definitions
folder like my vertex fragment and
material definitions I'm gonna put it
all into one for ease of this tutorial
but you should probably put your vertex
and fragment shaders your shaders folder
so I'm just going to create a new folder
in my mat defs folder gonna call this
one simple code forget and then going to
go to New I'll go to other to show you
the hearthstone OpenGL we won't deal
with geometry shaders I'm not sure Jamie
propers even supports me okay what a
vertex shader think that convention is
just to name your material vertex and
fragment shaders all the same way total
a simple color the new another fragment
shader that's simple come on you need to
add the material definition
material to a definition for that simple
color okay so this is what game engine
gives you by default you get material
parameters the technique broad
parameters don't get a defines I don't
think I really need it for this one okay
then in the vertex shader you get this
ft transform function it really
shouldn't be there because I don't think
it works most of the time it's basically
a shortcut for a g3 understorms look
like come from space it's going to be
the world view projection matrix this is
what's going to convert the vertices an
object space to screen space the final
one you really need and what times that
by bit in position and the problem is
that in position is a vector 3 and you
need it in a vector floor because that's
what you can't times because this matrix
is a 4 x 4 matrix con x 4 x 4 x 3 x
freights doesn't work so just the one
here and but we need to tell Jamie to
give us the imposition it's not just
going to give it so no it doesn't pass
everything unless you tell it to so
that's a tribute tribute red three in
position we also need to tell it to give
us the world view projection matrix you
need to set it in the material
definition which it already gives it to
us here so you have to add a little G
underscore which I've done there but
this is a uniform
and it's a uniform because it means it's
only pass to this whole backside shader
once if it was an attribute that would
keep being passed then there's not
really what you want because it wouldn't
be very efficient ok don't worry about
all these underlines the syntax
highlight it doesn't really work well
and the simple color it's given us a
grey for us then everyone was kind of
out what to make sure to reference the
vertex and fragment shader properly put
this in the central column folder let's
get simple colored vertex shader it's
accepting a color but doesn't have to
use it go back to my main projects that
we need a light a lot of way tutorials
i'm gonna use lights the last one role
but but most of them not so don't need
this color color i could set this i'm
not going to work hope I get a grey spin
nope I said I found common common
common mode
but a dull god what about big yes I love
those microwave race fair with a shader
ever and your fastest bug ok now I'm
going to do it's what we always have a
fool it's good scream oh ok but this it
what it's capitalized this isn't going
to make it green nope because we didn't
tell it to make it clean wouldn't really
tell her anything so what I need to do
have set color there specify that it's a
uniform
follow em on the strip club do I need to
save the back vector four I'm not sure
let's see if this works and I'm gonna
say if pound ifdef to set the fines in
undercapitalized just a color Jana put
to use in the same caps that one color
just check ok that's just a fast ones
capitalized and it had a Kohler tool
needs to find color so let's say if
colors defined it ended going to say
it's frustrating for me back for here
color colors define and so GL flag
colors don't even moved out I'll make a
crane was worried the person
whoa
lay down nope Wow ok wag walk in the den
why could it open the list to define
color Jeff actually presenting
hmm
laughs I that was specifically but if
that worked ok that works mostly this
it's a little bit away you know I don't
like it Lionel I time come to discern
you make sure not as our phones
hope this is Malcolm it all
to find this Inlet any
for sure you can affect the floor goes
what does the last meeting tonight
you have the am on the score you're
passing in something from full Jamie
application so back for effectively
such a rate of course is good Phillippe
right afterwards that's when I get
called and that's gonna get cold so if
defined follow
you
Oh
oh this is not going to market dog get
how you do this mr. Ellis come on Rosie
another time success that's sweet
Absalom lots of there you go so you
debug a shader granddad okay sweet next
one