framework used with custom rendering

[Rick]

I'm trying to use the framework, so I can get the lua stuff, but use my own buffer and drawing. All I get is a black screen.

 

So I init the framework just like normal, I create my own buffer, and in the loop I call UpdateFramework() but in the drawing part I have:

 

               TBuffer buffer = CreateBuffer(1024, 768, BUFFER_COLOR0 | BUFFER_DEPTH | BUFFER_NORMAL);

               //RenderFramework();
	SetBuffer(buffer);

	RenderWorld();

	SetBuffer(BackBuffer());

	RenderLights(buffer);

                // Send to screen
                Flip(0);

 

 

This produces a black screen and I can't figure out why. Everything is created in the main framework world and that's what would be set as the current world before RenderWorld() is called so that should render the world to my custom buffer. Then I follow the normal steps for non framework to get the lights drawn on that buffer. Why would this produce a black screen?

[Canardia]

CreateBuffer() must be before the main loop, and you should have UpdateFramework() in the loop also.

[Rick]

Sorry, I have both of those and it's not working.

[Canardia]

You also need to call RenderFramework() once before the main loop, because it initializes a lot of stuff.

[Rick]

Did that didn't work. Have you tried this before and got it working? If so I'd be interested in seeing what you have.

[Canardia]

Yeah, I use it all the time for rending mirrors, maps and radars and other simple small buffers.

[Rick]

Any chance I can see some example code? I must be missing something.

[Canardia]

require "scripts/constants/engine_const.lua"
RegisterAbstractPath(".")
Graphics(800,600)
fw = CreateFramework()
camera =fw.main.camera
camera:SetPosition(Vec3(0,20,-20))
light = CreateDirectionalLight()
light:SetRotation(Vec3(45,45,0))

camRotation=Vec3(0,0,0)

MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2)
HideMouse(1)

prevPos = Vec3(0)
cube = {}
cube1 = {}
cube2 = {}

gx=0
gy=0
cub=CreateCube()

for a = 0, 50, 1 do
for b = 0, 100, 1 do
	cube[b] = CopyEntity(cub)
	cube[b]:SetPosition(Vec3(prevPos.x + 1,prevPos.y + 1,prevPos.z))
	prevPos = cube[b]:GetPosition()
end
prevPos = Vec3(0,0,prevPos.z + 2)
end
prevPos = Vec3(0)
for a = 0, 50, 1 do
for b = 0, 100, 1 do
	cube[b] = CopyEntity(cub)
	cube[b]:SetPosition(Vec3(prevPos.x - 1,prevPos.y + 1,prevPos.z))
	prevPos = cube[b]:GetPosition()
end
prevPos = Vec3(0,0,prevPos.z + 2)
end

CameraClearMode(camera,-1)

minibuffer=CreateBuffer(256,256,BUFFER_COLOR+BUFFER_NORMAL+BUFFER_DEPTH)
thisbuffer=GetBuffer()

while KeyHit(KEY_ESCAPE)==0 do

        --Camera look
       gx=Curve(MouseX()- GraphicsWidth()/2,gx,10)
       gy=Curve(MouseY()- GraphicsHeight()/2,gy,10)
       MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2)
       camRotation.x = camRotation.x+gy /10
       camRotation.y = camRotation.y-gx /10    
       camera:SetRotation(camRotation,1)

       --keys
       move   = Curve(KeyDown(KEY_W)-KeyDown(KEY_S),move,10)
       strafe = Curve(KeyDown(KEY_D)-KeyDown(KEY_A),strafe,10) 
       camera:Move(Vec3(strafe ,0,move))       

       fw:Update()

thisbuffer=GetBuffer()
SetBuffer(minibuffer)
camera:Turnf(0,180,0)
RenderWorld();
RenderLights(minibuffer);
camera:Turnf(0,180,0)	
SetBuffer(thisbuffer)

fw:Render()	

SetBlend(1);
SetColor(Vec4(0,1,0,0.5));
DrawImage(GetColorBuffer(minibuffer,0),0,300,256,-256)
SetBlend(0);

       Flip(0)
end