Fast GRASS Tutorial -- GameMaker Studio 2 (Vertex Buffers for Beginners) 

If you wanted to Google a "How to..." question related to GameMaker/GML, what would it be?

This channel is a godsend for dense people like myself.

Great Video! Just wanted to point out that you never disable ztestenable nor alphatestenable, so if you end up doing any other gpu operations in the same room as the grass, those operations will most likely be messed up. To anyone reading this, i moved the set ztest and set alphatest to true in the draw event, before submitting the vertex buffer, and then set it to false immediately after submitting the vertex buffer. And then any objects that need to interact with the grass should enable ztest and alpha test whenever they move through the grass, and then set it to false again when youre done using it.

Very well done. Vertex buffers seem to intimidate people but this is clearly explained with great illustrations and editing. This should help a lot of people get started.

I really like the tutorials you make. These are great. Thanks for making them. So many of your videos were made just for people like me with intermediate skills.

How has it taken me this long to find this account. Amazing content man

that's incredible, so functional and fast

Amazing to see such knowledge and learn from it

is there any way to animate this grass when passing through it?

Since this works with the old depth = -y trick, I wonder how this would work with Layers. I tend to avoid depth nowadays since layers just make everything neater, but I'd still like to figure out how to sort vertex buffer-based grass with other instances like the player.

really well done tutorial my dood! outstanding work!

Awesome tutorial man!

Matharoo hitting us with great tutorials as per

Great explanation! Thank you!

This channel is a goldmine.

i took a look at the depth grass asset and works beautifully and then i saw the scrapped player collision code. i really wished that was a thing

Ty this was great

FYI, math, the link to the project is broken

Hey Mr. Matharoo, hope you're well. If you don't mind me asking... what do you use to screen record? I use the built in QuickTime on my MacBook, but for some reason the quality of the GameMaker IDE (specifically the code editor) is poor. Not sure why, but the color of the code looks dull with low anti-alias. I'm making a tutorial and want the code to look crisp like it does when I'm working in the IDE.

Hi i've copied the code and done as directed , but i seem to get a error when i run my game '" it says vertex builder must use vertex_begin() before writing to buffer at gml_object_Obj_GrassArea_create_0 "i have no idea what this means ? i double checked and i coped the code the same and included vertex_format_begin(); i didnt skip it , could it be that code from another object is interrupting this ? Or could it be that i am filling my room with the grass area? i am unsure of what to do.

I'm using a camera using camera_create() and every time I use it the grass is drawn only in a horizontal line and doesnt fill the screen. I can't see any view_xview or yview settings so I'm not sure how to go about fixing this?

Pls make “3d fps game making” video...ur lecture is easy to understand.

How can you sort depth properly for other objects to be fully on top or behind?

How do you make the grass draw below a tileset? please and thank you.

So you can only use this to make grass at 90 degree angles? If i rotate the grass area object in the room, the grass wont render at a 45 degree angle.

hey, quick question, do you by any chance know if there is a way to enable borderless window with code instaid of going to settings?

Thank you

fantastic as usual :)

Looks good, but I'm curious why you don't use a triangle strip?

It's interesting how your game doesn't come to a halt in 30 minutes; I've had a rough time dealing with buffers in gms2 - I've spent countless hours checking for memory leaks, cleaned up the code entirely several times and still had issues beyond chunking out literally any line of code that could be an issue. Have you or anyone else had trouble with this? I feel like it may be a Windows thing; I've had similar issues when using GM8.1 years back; using buffers or not aside, any game I ran compiled by 8.1 slowly turned into 3 fps for legit no reason.

Se colocar um Beat de fundo e aumentar a velocidade do vídeo em 3x da um rap bem top

eu escrevi o código todo certo mas quando vou iniciar o jogo não acontece nada o que pode ser?

Absolutely awesome

Helpful as always! :D

Hi, I bought your asset, it works great and was easy to tweak! Except for one bug that only happens sometimes where the grass uses other object's sprites instead of the grass sprites.

Very helpful video. I only have one question: How can I adjust this system to fit my pixel grid/base resolution? Currently the grass is drawn everywhere, even on sub-pixels (which doesn't look good), is there a way to avoid that?

Hey, I have question about the asset again: Do you know if there is a "easy" way to mask out some of the grass with paths/tiles/some other way of masking? What kind of approach would you take to have more manual way to affect large patch of grass? What I'm looking for is a way to mask out some of the grass with a road/path that goes through it. I know I could just use shapes or squares to draw around the road, but it would be more efficient if I could have a large area of grass, and then draw a road on top of it (with tiles, path or a sprite) that would "delete" the grass that lies beneath it. Do you think this would be doable?

its awesomeee you are very good thank you

Hi Matharoo. Thanks a lot for this. I purchased the asset as well because I want wind to move the grass, but it seems the asset is a bit older than the code in this video. I like how the code in the video lets you draw out the object in the room view. Very useful for large complex spaces where I will have a lot of grass growing around the place. I've tried to incorporate the movement code from the asset, but it simply wont draw. ;-( Any ideas?

I noticed that the asset you have at the marketplace doesn't seem to work with multiple subimages in the sprite. It always chooses one. If I add randomize(); to the code I can see it chooses different one, but all the grass will use the one same subimage.

Is there a tutorial before this showing how you made your character/movement and the level itself?

Would it be possible to use the depth with GMS2 if you use a different means of depth sorting, I use mirthcastles layer depth sorting system, and i've tried numerous ideas to no avail as far as setting the grasses "depth" to the what the appropriate layers depth would be etc, No luck thus far. I did buy your asset though to mess around with your shader for animating the grass, great work! thanks!

hello, i have a question " I cannot find any gpu_set_ztest_enable code for gms1 " how can i give write this code without this function in gms1.

Wait!!! Are you Indian... So good to see an Indian out in random game dev video...!

The link for download does not work. I click it, and nothing happens... A new tab opens actually, but no file is downloaded.

when i try to add a shader, then the gpu_set_alphatestenable(true); doesnt seem to work anymore. How can i fix that? Amazing tutorial btw :)

Is there anyway "chopping" the grass once it's been drawn?

This is cool, but why not just spam assets on the map? They're just sprites right?

про EndStep и -bbox_bottom не совсем понятно. А так всё рассказано очень доходчиво.

This is great but now all of my "draw end" events draw underneath this now for some reason.

Thank you! Привет из России

I know this is an older vid but this leaves an empty box around my player when he walks into the grass lololol oof

code pls

Your a smart person. But god dang dude!! You talk like Mr Makey from South park

this guy sounds 20% english and 80% japanese lol