glsl::DefaultRenderer_OIT_writePixel_glsl Class Reference

This shader corresponds to listing 1 of: More...

Classes
struct	_Texture2D

Public Member Functions
float	_reconstructCSZ (float d, vec3 clipInfo)
Vector2	computeRefractionOffset (float backgroundZ, vec3 csN, vec3 csPosition, float etaRatio)
	Result is in texture coordinates. More...
	layout (location=0) out vec4 _accum
	(Ar, Ag, Ab, Aa) More...
	layout (location=1) out vec4 _modulate
	(Br, Bg, Bb, D^2) More...
	layout (location=2) out vec2 _refraction
	(deltax, deltay) More...
float	randomVal (vec3 p)
	Not used in the final version. More...
void	writePixel (vec3 premultipliedReflectionAndEmission, float coverage, vec3 transmissionCoefficient, float collimation, float etaRatio, vec3 csPosition, vec3 csNormal)
	Instead of writing directly to the framebuffer in a forward or deferred shader, the G3D engine invokes this writePixel() function. More...

Public Attributes
uniform _Texture2D	_depthTexture

Detailed Description

This shader corresponds to listing 1 of:

McGuire and Mara, A Phenomenological Scattering Model for Order-Independent Transparency, Proceedings of the ACM Symposium on Interactive 3D Graphics and Games (I3D), Feburary 28, 2016

http://graphics.cs.williams.edu/papers/TransparencyI3D16/

Member Function Documentation

_reconstructCSZ()

float glsl::DefaultRenderer_OIT_writePixel_glsl::_reconstructCSZ ( float  d, vec3  clipInfo  )

inline

computeRefractionOffset()

Vector2 glsl::DefaultRenderer_OIT_writePixel_glsl::computeRefractionOffset ( float  backgroundZ, vec3  csN, vec3  csPosition, float  etaRatio  )

inline

Result is in texture coordinates.

layout() [1/3]

glsl::DefaultRenderer_OIT_writePixel_glsl::layout

(

location

= 0

)

(Ar, Ag, Ab, Aa)

layout() [2/3]

glsl::DefaultRenderer_OIT_writePixel_glsl::layout

(

location

= 1

)

(Br, Bg, Bb, D^2)

layout() [3/3]

glsl::DefaultRenderer_OIT_writePixel_glsl::layout

(

location

= 2

)

(deltax, deltay)

randomVal()

float glsl::DefaultRenderer_OIT_writePixel_glsl::randomVal ( vec3  p )

inline

Not used in the final version.

writePixel()

void glsl::DefaultRenderer_OIT_writePixel_glsl::writePixel ( vec3  premultipliedReflectionAndEmission, float  coverage, vec3  transmissionCoefficient, float  collimation, float  etaRatio, vec3  csPosition, vec3  csNormal  )

inline

Instead of writing directly to the framebuffer in a forward or deferred shader, the G3D engine invokes this writePixel() function.

This allows mixing different shading models with different OIT models.

Member Data Documentation

_depthTexture

uniform _Texture2D glsl::DefaultRenderer_OIT_writePixel_glsl::_depthTexture