Class OverlayRenderer: Render various bits of data that overlay the game world (selection circles, health bars, etc). More...

#include <OverlayRenderer.h>

Collaboration diagram for OverlayRenderer:

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Public Member Functions
	OverlayRenderer ()

	~OverlayRenderer ()

void	Initialize ()
	Performs one-time initialization. More...

void	Submit (SOverlayLine *overlay)
	Add a line overlay for rendering in this frame. More...

void	Submit (SOverlayTexturedLine *overlay)
	Add a textured line overlay for rendering in this frame. More...

void	Submit (SOverlaySprite *overlay)
	Add a sprite overlay for rendering in this frame. More...

void	Submit (SOverlayQuad *overlay)
	Add a textured quad overlay for rendering in this frame. More...

void	Submit (SOverlaySphere *overlay)
	Add a sphere overlay for rendering in this frame. More...

void	PrepareForRendering ()
	Prepare internal data structures for rendering. More...

void	EndFrame ()
	Reset the list of submitted overlays. More...

void	RenderOverlaysBeforeWater ()
	Render all the submitted overlays that are embedded in the world (i.e. More...

void	RenderOverlaysAfterWater ()
	Render all the submitted overlays that are embedded in the world (i.e. More...

void	RenderForegroundOverlays (const CCamera &viewCamera)
	Render all the submitted overlays that should appear on top of everything in the world. More...

Static Public Attributes
static const float	OVERLAY_VOFFSET = 0.2f
	Small vertical offset of overlays from terrain to prevent visual glitches. More...

Private Member Functions
	NONCOPYABLE (OverlayRenderer)

void	RenderTexturedOverlayLines ()
	Helper method; renders all overlay lines currently registered in the internals. More...

void	RenderTexturedOverlayLines (CShaderProgramPtr shader, bool alwaysVisible)
	Helper method; renders those overlay lines currently registered in the internals (i.e. More...

void	RenderQuadOverlays ()
	Helper method; batch-renders all registered quad overlays, batched by their texture for effiency. More...

void	RenderSphereOverlays ()
	Helper method; batch-renders all sphere quad overlays. More...

Private Attributes
OverlayRendererInternals *	m

Detailed Description

Class OverlayRenderer: Render various bits of data that overlay the game world (selection circles, health bars, etc).

Constructor & Destructor Documentation

OverlayRenderer::OverlayRenderer ( )

OverlayRenderer::~OverlayRenderer ( )

Member Function Documentation

void OverlayRenderer::EndFrame ( )

Reset the list of submitted overlays.

void OverlayRenderer::Initialize ( )

Performs one-time initialization.

Called by CRenderer::Open after graphics capabilities and the shader path have been determined (notably VBO support).

OverlayRenderer::NONCOPYABLE ( OverlayRenderer )

private

void OverlayRenderer::PrepareForRendering ( )

Prepare internal data structures for rendering.

Must be called after all Submit calls for a frame, and before any rendering calls.

void OverlayRenderer::RenderForegroundOverlays ( const CCamera & viewCamera )

Render all the submitted overlays that should appear on top of everything in the world.

Parameters

viewCamera camera to be used for billboard computations

void OverlayRenderer::RenderOverlaysAfterWater ( )

Render all the submitted overlays that are embedded in the world (i.e.

rendered behind other objects in the normal 3D way) and should be drawn after water (i.e. may be visible on top of the water)

void OverlayRenderer::RenderOverlaysBeforeWater ( )

Render all the submitted overlays that are embedded in the world (i.e.

rendered behind other objects in the normal 3D way) and should be drawn before water (i.e. may be visible under the water)

void OverlayRenderer::RenderQuadOverlays ( )

private

Helper method; batch-renders all registered quad overlays, batched by their texture for effiency.

void OverlayRenderer::RenderSphereOverlays ( )

private

Helper method; batch-renders all sphere quad overlays.

void OverlayRenderer::RenderTexturedOverlayLines ( )

private

Helper method; renders all overlay lines currently registered in the internals.

Batch- renders textured overlay lines batched according to their visibility status by delegating to RenderTexturedOverlayLines(CShaderProgramPtr, bool).

void OverlayRenderer::RenderTexturedOverlayLines	(	CShaderProgramPtr	shader,
		bool	alwaysVisible
	)

private

Helper method; renders those overlay lines currently registered in the internals (i.e.

in m->texlines) for which the 'always visible' flag equals alwaysVisible. Used for batch rendering the overlay lines according to their alwaysVisible status, as this requires a separate shader to be used.

void OverlayRenderer::Submit ( SOverlayLine * overlay )

Add a line overlay for rendering in this frame.

Parameters