when i want to draw 2d image, no locking, no update of image, which method is fastest, is there faster way that i don't yet know ?
when i use an image with format D3DFMT_A8R8G8B8, is it slower than D3DFMT_X8R8G8B8 ?
is D3DDevice->StretchRect() faster to use it instead of D3DDevice->DrawPrimitiveUP() ?
is LPD3DXSPRITE faster than all ?
which is fastest, i just want to know.
and i want to load huge images faster, D3DXLoadSurfaceFromFile seems fast but when i load 1920x1080 images, it can't reach even 25 fps,
which is similar to a video playing and i don't want to use a video file format.
i used dds image file format recently, it seems fastest format, but its uncompressed file size is very large.
is there an image file format that have compression, good quality and small file size ?
Creating texture:
Drawing method 1:Code:char FileName="sample.jpg";
LPDIRECT3DTEXTURE9 tex;
LPDIRECT3DSURFACE9 surf;
D3DXIMAGE_INFO imginfo;
void InitIt(){
D3DDevice->CreateTexture(550,400,1,0,D3DFMT_X8R8G8B8,D3DPOOL_DEFAULT,&tex,0);
D3DXGetImageInfoFromFile(FileName,&imginfo);
tex->GetSurfaceLevel(0,&surf);
D3DXLoadSurfaceFromFile(surf,0,0,FileName,0,D3DX_FILTER_NONE,0,0);
surf->Release();
D3DDevice->SetTexture(0,tex);
D3DDevice->SetFVF(D3DFVF_XYZRHW|D3DFVF_TEX1);
}
Code:struct TVERTEX{float x,y,z,rhw,u,v;};
TVERTEX vert[4];
void DrawIt(const float x,const float y){
vert[0].x=x;
vert[0].y=y;
vert[0].z=0;
vert[0].rhw=1;
vert[0].u=0;
vert[0].v=0;
vert[1].x=x+(float)imginfo.Width;
vert[1].y=y;
vert[1].z=0;
vert[1].rhw=1;
vert[1].u=1;
vert[1].v=0;
vert[2].x=x;
vert[2].y=y+(float)imginfo.Height;
vert[2].z=0;
vert[2].rhw=1;
vert[2].u=0;
vert[2].v=1;
vert[3].x=x+(float)imginfo.Width;
vert[3].y=y+(float)imginfo.Height;
vert[3].z=0;
vert[3].rhw=1;
vert[3].u=1;
vert[3].v=1;
D3DDevice->DrawPrimitiveUP(D3DPT_TRIANGLESTRIP,2,vert,24);
}
