Window Scaling for DESKTOP about raylib-go

[raysan5]

Sure! Just use a RenderTexture2D target to do the render at 240x160 and then render that target.texture to window size. You can find an example here.

[Pienkaito]

I think I nearly have it. My only problem right now would be "RenderTexture2d rendered upside down" issue, which was addressed in the forums.

Because of how DrawTextureRec works differently as I expected, I opted to use DrawTextureEx instead and it works perfectly for my intended use. But the problem is that I can't adjust the rendering height.

I could solve it by rendering it twice on two different textures, but perhaps there is another (and better) method.

[raysan5]

But the problem is that I can't adjust the rendering height.

I don't understand exactly what you mean, could you post some example of what are you trying to accomplish?

[Pienkaito]

In your example, you flipped the texture by its y-axis like so.

// NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
raylib.DrawTextureRec(target.Texture, raylib.NewRectangle(0, 0, target.Texture.Width, -target.Texture.Height), raylib.NewVector2(0, 0), raylib.White)

I'm using this function to scale my output
raylib.DrawTextureEx(target.Texture, raylib.NewVector2(0, 0), 0, float32(scale), raylib.White)

My texture can be scaled accordingly by using this function, but the texture itself is upside down.
So in order to fix this I've done the following.

raylib.BeginTextureMode(target)
{
	//Draw stuff onto the texure
}
raylib.EndTextureMode()

raylib.BeginTextureMode(targetflipped)
{
	raylib.DrawTextureRec(target.Texture, raylib.NewRectangle(0, 0, target.Texture.Width, target.Texture.Height), raylib.NewVector2(0, 0), raylib.White)
}
raylib.EndTextureMode()

raylib.DrawTextureEx(targetflipped.Texture, raylib.NewVector2(0, 0), 0, float32(scale), raylib.White)

It feels sort of redundant and I was wondering if there's a better way for doing this.

[nehpe]

@Pienkaito yeah, that is pretty inefficient. I recommend using DrawTexturePro --

raylib.DrawTexturePro(target.Texture, rl.NewRectangle(0, 0, target.Texture.Width, -target.Texture.Height), rl.NewRectangle(0, 0, target.Texture.Width, target.Texture.Height), rl.Vector2{0, 0}, 0, rl.White)