# Rasterizer (bge.render)

## Intro

Example of using a `bge.types.SCA_MouseSensor`, and two `bge.types.KX_ObjectActuator` to implement MouseLook:

Note

This can also be achieved with the `bge.types.KX_MouseActuator`.

    # To use a mouse movement sensor "Mouse" and a
    # motion actuator to mouse look:
    import bge

    # scale sets the speed of motion
    scale = 1.0, 0.5

    co = bge.logic.getCurrentController()
    obj = co.owner
    mouse = co.sensors["Mouse"]
    lmotion = co.actuators["LMove"]
    wmotion = co.actuators["WMove"]

    # Transform the mouse coordinates to see how far the mouse has moved.
    def mousePos():
       x = (bge.render.getWindowWidth() / 2 - mouse.position[0]) * scale[0]
       y = (bge.render.getWindowHeight() / 2 - mouse.position[1]) * scale[1]
       return (x, y)

    pos = mousePos()

    # Set the amount of motion: X is applied in world coordinates...
    wmotion.useLocalTorque = False
    wmotion.torque = ((0.0, 0.0, pos[0]))

    # ...Y is applied in local coordinates
    lmotion.useLocalTorque = True
    lmotion.torque = ((-pos[1], 0.0, 0.0))

    # Activate both actuators
    co.activate(lmotion)
    co.activate(wmotion)

    # Centre the mouse
    bge.render.setMousePosition(int(bge.render.getWindowWidth() / 2), int(bge.render.getWindowHeight() / 2))

## Constants

`bge.render.``KX_TEXFACE_MATERIAL`

  Materials as defined by the texture face settings.

`bge.render.``KX_BLENDER_MULTITEX_MATERIAL`

  Materials approximating blender materials with multitexturing.

`bge.render.``KX_BLENDER_GLSL_MATERIAL`

  Materials approximating blender materials with GLSL.

`bge.render.``VSYNC_OFF`

  Disables vsync

`bge.render.``VSYNC_ON`

  Enables vsync

`bge.render.``VSYNC_ADAPTIVE`

  Enables adaptive vsync if supported. Adaptive vsync enables vsync if the framerate is above the monitors refresh rate. Otherwise, vsync is diabled if the framerate is too low.

`bge.render.``LEFT_EYE`

  Left eye being used during stereoscopic rendering.

`bge.render.``RIGHT_EYE`

  Right eye being used during stereoscopic rendering.

## Functions

`bge.render.``getWindowWidth`()

  Gets the width of the window (in pixels)

  Return type: | integer

`bge.render.``getWindowHeight`()

  Gets the height of the window (in pixels)

  Return type: | integer

`bge.render.``setWindowSize`(width, height)

  Set the width and height of the window (in pixels). This also works for fullscreen applications.

  Note

  Only works in the standalone player, not the Blender-embedded player.

  Parameters: | width (integer) – width in pixels height (integer) – height in pixels

`bge.render.``setFullScreen`(enable)

  Set whether or not the window should be fullscreen.

  Note

  Only works in the standalone player, not the Blender-embedded player.

  Parameters: | enable (bool) – `True` to set full screen, `False` to set windowed.

`bge.render.``getFullScreen`()

  Returns whether or not the window is fullscreen.

  Note

  Only works in the standalone player, not the Blender-embedded player; there it always returns False.

  Return type: | bool

`bge.render.``getDisplayDimensions`()

  Get the display dimensions, in pixels, of the display (e.g., the monitor). Can return the size of the entire view, so the combination of all monitors; for example, `(3840, 1080)` for two side-by-side 1080p monitors.

  Return type: | tuple (width, height)

`bge.render.``makeScreenshot`(filename)

  Writes an image file with the current displayed frame.

  The image is written to ‘filename’. The path may be absolute (eg. `/home/foo/image`) or relative when started with `//` (eg. `//image`). Note that absolute paths are not portable between platforms. If the filename contains a `#`, it will be replaced by an incremental index so that screenshots can be taken multiple times without overwriting the previous ones (eg. `image-#`).

  Settings for the image are taken from the render settings (file format and respective settings, gamma and colospace conversion, etc). The image resolution matches the framebuffer, meaning, the window size and aspect ratio. When running from the standalone player, instead of the embedded player, only PNG files are supported. Additional color conversions are also not supported.

  Parameters: | filename (string) – path and name of the file to write

`bge.render.``enableVisibility`(visible)

  Deprecated; doesn’t do anything.

`bge.render.``showMouse`(visible)

  Enables or disables the operating system mouse cursor.

  Parameters: | visible (boolean) –

`bge.render.``setMousePosition`(x, y)

  Sets the mouse cursor position.

  Parameters: | x (integer) – X-coordinate in screen pixel coordinates. y (integer) – Y-coordinate in screen pixel coordinates.

`bge.render.``setBackgroundColor`(rgba)

  Deprecated and no longer functional. Use `bge.types.KX_WorldInfo.backgroundColor()` instead.

`bge.render.``setEyeSeparation`(eyesep)

  Sets the eye separation for stereo mode. Usually Focal Length/30 provides a confortable value.

  Parameters: | eyesep (float) – The distance between the left and right eye.

`bge.render.``getEyeSeparation`()

  Gets the current eye separation for stereo mode.

  Return type: | float

`bge.render.``setFocalLength`(focallength)

  Sets the focal length for stereo mode. It uses the current camera focal length as initial value.

  Parameters: | focallength (float) – The focal length.

`bge.render.``getFocalLength`()

  Gets the current focal length for stereo mode.

  Return type: | float

`bge.render.``getStereoEye`()

  Gets the current stereoscopy eye being rendered. This function is mainly used in a `bge.types.KX_Scene.pre_draw` callback function to customize the camera projection matrices for each stereoscopic eye.

  Return type: | LEFT_EYE, RIGHT_EYE

`bge.render.``setMaterialMode`(mode)

  Set the material mode to use for OpenGL rendering.

  Parameters: | mode (KX_TEXFACE_MATERIAL, KX_BLENDER_MULTITEX_MATERIAL, KX_BLENDER_GLSL_MATERIAL) – material mode

  Note

  Changes will only affect newly created scenes.

`bge.render.``getMaterialMode`(mode)

  Get the material mode to use for OpenGL rendering.

  Return type: | KX_TEXFACE_MATERIAL, KX_BLENDER_MULTITEX_MATERIAL, KX_BLENDER_GLSL_MATERIAL

`bge.render.``setGLSLMaterialSetting`(setting, enable)

  Enables or disables a GLSL material setting.

  Parameters: | setting (string (lights, shaders, shadows, ramps, nodes, extra_textures)) – enable (boolean) –

`bge.render.``getGLSLMaterialSetting`(setting)

  Get the state of a GLSL material setting.

  Parameters: | setting (string (lights, shaders, shadows, ramps, nodes, extra_textures)) –
  Return type: | boolean

`bge.render.``setAnisotropicFiltering`(level)

  Set the anisotropic filtering level for textures.

  Parameters: | level (integer (must be one of 1, 2, 4, 8, 16)) – The new anisotropic filtering level to use

  Note

  Changing this value can cause all textures to be recreated, which can be slow.

`bge.render.``getAnisotropicFiltering`()

  Get the anisotropic filtering level used for textures.

  Return type: | integer (one of 1, 2, 4, 8, 16)

`bge.render.``setMipmapping`(value)

  Change how to use mipmapping.

  Note

  Changing this value can cause all textures to be recreated, which can be slow.

`bge.render.``getMipmapping`()

  Get the current mipmapping setting.

  Return type: | RAS_MIPMAP_NONE, RAS_MIPMAP_NEAREST, RAS_MIPMAP_LINEAR

`bge.render.``drawLine`(fromVec, toVec, color)

  Draw a line in the 3D scene.

  Parameters: | fromVec (list [x, y, z]) – the origin of the line toVec (list [x, y, z]) – the end of the line color (list [r, g, b]) – the color of the line

`bge.render.``enableMotionBlur`(factor)

  Enable the motion blur effect.

  Parameters: | factor (float [0.0 - 1.0]) – the ammount of motion blur to display.

`bge.render.``disableMotionBlur`()

  Disable the motion blur effect.

`bge.render.``showFramerate`(enable)

  Show or hide the framerate.

  Parameters: | enable (boolean) –

`bge.render.``showProfile`(enable)

  Show or hide the profile.

  Parameters: | enable (boolean) –

`bge.render.``showProperties`(enable)

  Show or hide the debug properties.

  Parameters: | enable (boolean) –

`bge.render.``autoDebugList`(enable)

  Enable or disable auto adding debug properties to the debug list.

  Parameters: | enable (boolean) –

`bge.render.``clearDebugList`()

  Clears the debug property list.

`bge.render.``setVsync`(value)

  Set the vsync value

  Parameters: | value (integer) – One of VSYNC_OFF, VSYNC_ON, VSYNC_ADAPTIVE

`bge.render.``getVsync`()

  Get the current vsync value

  Return type: | One of VSYNC_OFF, VSYNC_ON, VSYNC_ADAPTIVE