Material system for 2D

MikhailSh · July 25, 2015, 12:00pm

Hi,

I found that there is a material system in cocos2d-x. But i can’t figure out how to apply it to 2d nodes. In tests it is used in a such way:

spriteBlur->setGLProgramState(mat1->getTechniqueByName(“blur”)->getPassByIndex(0)->getGLProgramState());

That doesn’t give any benefits.

And only for Sprite3D:

sprite->setMaterial(mat);

Is it possible to use them for 2D sprites? Or it still under development? or not intended for 2D at all?

Thanks

MikhailSh · January 8, 2016, 10:20am

Any news? Is Material designed to be used only for 3D?

MikhailSh · January 9, 2016, 6:46pm

@slackmoehrle, could you check this question? Just choose one of the next answers:

material system is not intended for 2d and never will;
material system is under development for 2d;
material system will be extended to 2d at some far future;

slackmoehrle · January 10, 2016, 8:13pm

I don’t know the answer to this. Let us ask @ricardo for help.

ricardo · January 11, 2016, 1:49am

Material system was designed for 3D, but you can “abuse” it and use it for 2D.

As an example, take a look at the “Material test”, and you will see that 2d sprites are using it.

github.com

cocos2d/cocos2d-x/blob/v3/tests/cpp-tests/Classes/MaterialSystemTest/MaterialSystemTest.cpp#L114


}
}


std::string Material_MultipleSprite3D::subtitle() const
{
return "Sprites with multiple meshes";
}


//
// MARK: Material_2DEffects
//
void Material_2DEffects::onEnter()
{
MaterialSystemBaseTest::onEnter();


auto properties = Properties::createNonRefCounted("Materials/2d_effects.material#sample");


// Print the properties of every namespace within this one.
printProperties(properties, 0);


Material *mat1 = Material::createWithProperties(properties);

MikhailSh · January 11, 2016, 9:00pm

Thanks. I already found that i have access to shaders via material. But as i mentioned above it doesn’t give any benefits for 2d, just some additional complexity. What i really like in materials - multiple passes. Currently there is no build-in solution for that and the only way (as i know) is to use some wrapper with render textures. Though multiple passes are quite rare so it’s not very important.