ShadingPass Class Reference

A Render Pass that performs deferred shading. More...

#include <shadingpass.h>

Inherits RenderPass.

Public Member Functions
void	render () override
	Uses the input data to generate the output. More...
void	cleanup () override
	Resets the Render Pass to the state after creation but before initialization. More...
void	setDepthMapInput (TextureChannel &textureChannel)
	Sets the depth map that shall be used during rendering. More...
void	setColorMapInput (TextureChannel &textureChannel)
	Sets the color map that shall be used during rendering. More...
void	setNormalMapInput (TextureChannel &textureChannel)
	Sets the normal map that shall be used during rendering. More...
TextureChannel &	getShadedOutput ()
	Returns the shaded image. More...
bool	shadedImageToScreen ()
	Changes the output mode. The shaded image is now drawn onto the screen. More...
void	removeInput () override
	Removes all input channels except for VaoChannels. If the Render Pass uses VaoChannels as input use the provided clearObjectInput() function to remove all VaoChannels.
void	updateResolution () override
	Must be called after the screen resolution has changed. More...
Public Member Functions inherited from RenderPass
virtual	~RenderPass ()
	Calls cleanup() More...

Static Public Member Functions
static void	linkVMat (QMatrix4x4 &v)
	Links the view matrix that shall be used during rendering. More...
static void	linkInvProjMat (QMatrix4x4 &ip)
	Links the inverse projection matrix that shall be used during rendering. More...
Static Public Member Functions inherited from RenderPass
static void	cleanupHelpers ()
	Removes helper variables. More...

Additional Inherited Members
Protected Member Functions inherited from RenderPass
template<class C >
bool	helperMultiChannelContains (std::list< C * > &list, C &channel)
template<class C >
void	helperMultiChannelAdd (std::list< C * > &list, C &channel)
template<class C >
bool	helperMultiChannelRemove (std::list< C * > &list, C &channel)
template<class C >
void	helperMultiChannelClean (std::list< C * > &list)
template<class C >
void	helperMultiChannelClear (std::list< C * > &list)
Static Protected Member Functions inherited from RenderPass
static bool	loadShader (std::string &path, GLuint id)
static bool	noGlErrors ()
static bool	checkFbo ()
static void	drawUnitQuad ()

Detailed Description

A Render Pass that performs deferred shading.

This Render Pass takes a color map and a normal map as input. It creates a shaded image of the scene. Both maps are normalized using the alpha values. Afterwards phong shading with point lights is performed.

Member Function Documentation

void ShadingPass::cleanup ( )

overridevirtual

Resets the Render Pass to the state after creation but before initialization.

Might use OpenGL calls. If no other instances of this Render Pass are currently initialized the shader program is removed from the GPU.

Implements RenderPass.

RenderPass::TextureChannel & ShadingPass::getShadedOutput

(

)

Returns the shaded image.

Might use OpenGL calls.

Returns

A channel containing the rendered image.

void ShadingPass::linkInvProjMat ( QMatrix4x4 &  ip )

static

Links the inverse projection matrix that shall be used during rendering.

Does not copy the matrix. The responsibility for deletion remains at the caller.

Parameters

v	The view matrix. Must point to a valid matrix whenever render() is called.

void ShadingPass::linkVMat ( QMatrix4x4 &  v )

static

Links the view matrix that shall be used during rendering.

Does not copy the matrix. The responsibility for deletion remains at the caller.

Parameters

v	The view matrix. Must point to a valid matrix whenever render() is called.

void ShadingPass::render ( )

overridevirtual

Uses the input data to generate the output.

Uses OpenGL calls if initialized.

Implements RenderPass.

void ShadingPass::setColorMapInput

(

RenderPass::TextureChannel &

textureChannel

)

Sets the color map that shall be used during rendering.

Parameters

textureChannel

The channel containing the color map.

void ShadingPass::setDepthMapInput

(

RenderPass::TextureChannel &

textureChannel

)

Sets the depth map that shall be used during rendering.

Parameters

textureChannel

The channel containing the depth map.

void ShadingPass::setNormalMapInput

(

RenderPass::TextureChannel &

textureChannel

)

Sets the normal map that shall be used during rendering.

Parameters

textureChannel

The channel containing the normal map.

bool ShadingPass::shadedImageToScreen

(

)

Changes the output mode. The shaded image is now drawn onto the screen.

Might use OpenGL calls.

Returns

Returns false if the output to the screen could not be set up properly.

void ShadingPass::updateResolution ( )

overridevirtual

Must be called after the screen resolution has changed.

Might use OpenGL calls.

Implements RenderPass.

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The documentation for this class was generated from the following files:

• shadingpass.h
• shadingpass.cpp