1
vote
0answers
50 views

How to setup a particular blend state where the alpha channel is additive?

I would like to set a blend state to be "additive" and do the following: Result.R = Source.R + Destination.R; Result.G = Source.G + Destination.G; Result.B = Source.B + Destination.B; Result.A = ...
3
votes
1answer
191 views

Best way to blend colors in tile lighting? (XNA)

I have made a color, decent, recursive, fast tile lighting system in my game. It does everything I need except one thing: different colors are not blended at all: Here is my color blend code: ...
3
votes
2answers
270 views

Laser Beam End Points Problems

I am building a game in XNA that features colored laser beams in 3D space. The beams are defined as: Segment start position Segment end position Line width For rendering, I am using 3 quads: ...
5
votes
1answer
491 views

What are the rest of the blending functions used for?

In general, I know of five ways to make use of blending functions (these are for OpenGL, but replace glBlendFunc() with SetRenderState(D3DRS_SRCBLEND) and SetRenderState(D3DRS_DESTBLEND) for DirectX): ...
4
votes
2answers
932 views

Blending textures together, texture fade over / fade in

What is the best way to render a texture overlapping effect? Like in this example: I want either the grass to fade in to the snow texture, or the other way around. No rough edges. Somehow make ...
3
votes
3answers
3k views

Alpha blending not rendering properly XNA 4.0

I'm trying to render a tree made out of 2 rectangles intersecting in the center at a 90degree angle. The texture has an alpha channel but which ever rectangle gets rendered second causes a weird ...
5
votes
2answers
674 views

Where can I find a good tutorial to replicate Game Maker's surfaces and blend modes in XNA?

I know Game Maker's surfaces exist in XNA (It's more the othe way around, XNA's surfaces exist in Game Maker), same thing for blend modes, since (I think) they both use DirectX. This is the question: ...