How to draw a texture to a quad without weird deformation

[Alex-Mart]

I want to draw a sf::Texture to a simple sf::VertexArray/ sf::Quad, like the attached image shows, but if i simply map the quads vertexes to the texture it doesn't draw my quad like the image because the quad is divided into two triangles and that deforms the texture, causing a split in the middle, how can I avoid this?
Thank you in advance.

P.S: I've also tried to draw 4 difrent triangles and a triangle fan with 6 points with the 0 in the middle and the vertex 1 being equal to the 5th

[AlejandroCoria]

I think that in order to have the correct deformation 3d is needed. You should look Sprite 3D from SelbaWard.

[Alex-Mart]

I think that in order to have the correct deformation 3d is needed. You should look Sprite 3D from SelbaWard.

I don't actually want to do a 3D transform on the texture, just to have it interpolate between all 4 vertexes instead of 3, maybe a shader could do that?
I'm not sure...

[AlejandroCoria]

I think ElasticSprite of SelbaWard does it in 2d. You should check their code.

[Stauricus]

can't you just use TriangleStrip? add vertices to the VertexArray in this order:
A: -1, -1
B: 1, -1
C: -1, 1
D: 1, 1

[Hapax]

Yes, Selba Ward's Elastic Sprite does just this - interpolates the texture using four points instead of three.

For examples,

Bi-linear interpolation (default):


Perspective interpolation (if required instead):