texture | texture synthesis code | Game Engine library

In general instead of using Texture2D.SetPixel on individual pixels rather use Texture2D.GetPixels and Texture2D.SetPixels on the entire image (or the section you changed).

This is already way more efficient!

Then using Texture2D.GetPixels32 and Texture2D.SetPixels32 which do use raw byte color format (0 to 255 instead of 0f to 1f) is even faster!

Are you calling dispose() in the render method of GameScreen? Instead call when the screen is hidden.

One way to determine what section of your terrain should be culled is to use a quadtree (for a heightmap) or an octree (for a voxel map). Basically, you divide your terrain into little chunks that then get divided further accordingly. You can then test if these chunks are in your viewing frustum and cull them if necessary. This technique was already discussed in great detail:

• Efficient (and well explained) implementation of a Quadtree for 2D collision detection
• https://www.rastertek.com/tertut05.html
• https://gamedev.stackexchange.com/questions/15697/quadtree-terrain-splitting-i-dont-get-it

I saw some websites saying to use GL_DYNAMIC_DRAW instead of GL_STATIC_DRAW, but I did not understand it.

These are usage hints to OpenGL on how the data will be accessed so the implementation has the ability to apply certain optimizations on how to store/use it.

usage is a hint to the GL implementation as to how a buffer object's data store will be accessed. This enables the GL implementation to make more intelligent decisions that may significantly impact buffer object performance. (https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glBufferData.xhtml)

Please note that these are only indications, no restrictions:

It does not, however, constrain the actual usage of the data store.

Because you will likely update your VBO's and IBO's constantly (see culling) and only want to draw them GL_DYNAMIC_DRAW would be a good choice:

The data store contents will be modified repeatedly (because of culling) and used many times. The data store contents are modified by the application and used as the source for GL drawing and image specification commands.

as I have googled that it can affect the performance of the game

Well, it will cost some performance to cull your terrain but in the end, it will likely gain performance because many vertices (triangles) can be discarded. This performance gain may grow with larger terrains.

The uniforms materialAmbient, ambientLight and specularLight are not "used" in the shader program. They are not required to calculate the output outColor (Actually materialAmbient are ambientLight use to calculate effectiveAmbient. effectiveAmbient, however is not used).
The compiler and linker optimize the program and removes unnecessary calculations and unnecessary variables. Therefore this variables become no active program resource and you cannot get the resource index (uniform location) for this variables.

To make argument optional you should provide default value, just like this:

The cryptic error message is of little help, but the stack trace shows that the error occurs in the line:

This may be a packing issue. Consider using Unity's Color32 struct, which is perfectly aligned for use in native code.

Also you can't pass managed array as ref (because ref may also add internal info, such as array length before actual data, which become overwritten by DLL code), for this call you should use

As the error message states:

Ok, for anyone who struggling on question "How to write D3D11 texture from CUDA kernel", here is how:

Create D3D texture with D3D11_BIND_UNORDERED_ACCESS. Then, register resource: