Antialiasing Demo Shows How To
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| 'antialiasing demo by ninjarat. very simple and easy. 'switch to gl driver. can't do antialiasing in directx for some reason SetGraphicsDriver GLMax2DDriver() Graphics 640,480,32 'make graphics context 'enable smoothing (antialiasing) glEnable GL_POLYGON_SMOOTH glEnable GL_LINE_SMOOTH SetBlend ALPHABLEND 'enable alpha blending 'intialize line arrays Local qp1#[]=[0.0,0.0] Local qv1#[]=[Rand(1,10)/7.0*10,Rand(1,10)/7.0*10] Local qp2#[]=[GraphicsWidth()-1.0,0.0] Local qv2#[]=[Rand(1,10)/7.0*10,Rand(1,10)/7.0*10] Local qp3#[]=[GraphicsWidth()-1.0,GraphicsHeight()-1.0] Local qv3#[]=[Rand(1,10)/7.0*10,Rand(1,10)/7.0*10] Local qp4#[]=[0.0,GraphicsHeight()-1.0] Local qv4#[]=[Rand(1,10)/7.0*10,Rand(1,10)/7.0*10] 'start main loop Repeat sctr:+1 'increment our frame counter 'various counts to be used in sine waves a#:+1.1 b#:+2.2 c#:+3.3 'fluxuate colors r#=128+Sin(a)*127 g#=128+Sin(b)*127 b#=128+Sin(c)*127 'set coords for the message x#=215+Sin(a/2)*127 y#=235+Sin(c/2)*127 'use alpha blending to slowly fade the background instead 'of an abrupt clear, like with cls() SetColor 0,0,0 SetAlpha 0.065 DrawRect 0,0,GraphicsWidth(),GraphicsHeight() SetAlpha 1.0 SetColor 255,255,255 'if our frame counter exceeds three, then increment the lines If sctr>3 Then 'apply x movement qp1[0]:+qv1[0] qp2[0]:+qv2[0] qp3[0]:+qv3[0] qp4[0]:+qv4[0] 'apply y movement qp1[1]:+qv1[1] qp2[1]:+qv2[1] qp3[1]:+qv3[1] qp4[1]:+qv4[1] 'check x bounary to make sure we don't go off the screen If qp1[0]>GraphicsWidth() Or qp1[0]<0 Then qv1[0]=-qv1[0] If qp2[0]>GraphicsWidth() Or qp2[0]<0 Then qv2[0]=-qv2[0] If qp3[0]>GraphicsWidth() Or qp3[0]<0 Then qv3[0]=-qv3[0] If qp4[0]>GraphicsWidth() Or qp4[0]<0 Then qv4[0]=-qv4[0] 'check y bounary to make sure we don't go off the screen If qp1[1]>GraphicsHeight() Or qp1[1]<0 Then qv1[1]=-qv1[1] If qp2[1]>GraphicsHeight() Or qp2[1]<0 Then qv2[1]=-qv2[1] If qp3[1]>GraphicsHeight() Or qp3[1]<0 Then qv3[1]=-qv3[1] If qp4[1]>GraphicsHeight() Or qp4[1]<0 Then qv4[1]=-qv4[1] sctr=0 'reset frame counter EndIf 'draw the lines SetTransform 0,1,1 SetColor r,g,b DrawLine qp1[0],qp1[1],qp2[0],qp2[1] DrawLine qp2[0],qp2[1],qp3[0],qp3[1] DrawLine qp3[0],qp3[1],qp4[0],qp4[1] DrawLine qp4[0],qp4[1],qp1[0],qp1[1] SetTransform 0,2,2 'set size to double DrawText "Antialiasing, yo!",x,y 'display message at coordinates SetTransform 0,1,1 'set size back down to single SetColor 255,255,255 'set color to white DrawText "Press ESC to end.",0,0 'display another message at coords 0, 0 Flip 'swap buffers Until KeyHit(KEY_ESCAPE) 'keep going until someone presses escape. EndGraphics() 'delete graphics context End 'end execution |
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| Nice, althouth to antialiase polygons you're supposed to use a blend mode that is different from just alphablending. I think its the SRC_ALPHA_SATURATE mode. |
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