Water rendering, element base terrain interaction, #30 #57

[kateyy]

• This includes the water particle (+terrain) rendering, adding some post processing steps. ref #30
• The renderer calls the terrain to render its base tiles only, water terrain depth image is used in the water particle rendering.
• Shadowing is now only applied on solid elements, ignoring water particles+terrain for now.
• changed the terrain to work with element names and definitions.
• terrain interaction techniques use normal distribution for height changes ( we should define the used std deviation in the elements later..)
• the terrain interactor will change the terrain type depending on its current material (will be set when grabbing the terrain)

This doesn't do what the branch name says, but includes hopefully most of the cpp changes to do the transformations #57. We should implement all further steps in the lua scripts, hacking around until it looks fine. The terrain interactor interface is a bit large, we should clean it up when the interaction script work (and we know what we really need).

[kateyy]

Don't forget to update your elementData, it contains a sand texture.

[lanice]

#warning: Physx material undefined for element bedrock. using default element instead.
#warning: Physx material undefined for element sand. using default element instead.
#warning: Physx material undefined for element water. using default element instead.

These are probably intendet at the moment, right?

[lanice]

I get mass console output like this:

performance: 0x20072, medium severity (API)
    |-Buffer performance warning: Buffer object 4 (bound to NONE, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.
performance: 0x20072, medium severity (API)
    |-Buffer performance warning: Buffer object 14 (bound to NONE, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.
performance: 0x20072, medium severity (API)
    |-Buffer performance warning: Buffer object 4 (bound to NONE, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.
performance: 0x20072, medium severity (API)
    |-Buffer performance warning: Buffer object 14 (bound to NONE, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.

But it doesn't seem to disturb the program in any way...

[lanice]

All in all: Very nice...! What we should keep track of: It would be cool if you could choose the "height" or so on which you wanna operate on. Usage e.g.: You create a (maybe sand) hill onto another (stone) hill. First you pull up the stone terrain, and then, ONTO the hill you put a smaller sand hill. At the moment that is not possible because 'radius' and 'height' is fixed together, right? so when you put sand on top of the stone hill, the complete hill will become sand...

[lanice]

Because it's a big load of changes here, please everyone check at least if this works! And don't forget to pull the data repo ;)

[FHorschig]

Works for me. I am looking forward to merge.

[kateyy]

first one: yes, this is intended. We should fix this with the first element scripts.

[kateyy]

2nd: no idea where this comes from. The only point where we copy data from video to system memory is the pixel fetch for positioning the hand. But that's from a texture, not a dynamic draw buffer..