glsl::textureFilter_glsl Class Reference

Shader program. More...

Public Member Functions
float	bicubic_g0 (float a)
float	bicubic_g1 (float a)
float	bicubic_h0 (float a)
float	bicubic_h1 (float a)
float	bicubic_w0 (float a)
float	bicubic_w1 (float a)
float	bicubic_w2 (float a)
float	bicubic_w3 (float a)
vec4	texture2DLod_bicubic (sampler2D tex, vec2 P, float lod, vec2 size, vec2 invSize)
vec4	texture2DLod_smootherstep (sampler2D tex, vec2 P, float lod, vec2 size, vec2 invSize)
	Inigo Quilez's smooth bilinear http://www.iquilezles.org/www/articles/texture/texture.htm More...
vec4	texture2DLod_smoothstep (sampler2D tex, vec2 P, float lod, vec2 size, vec2 invSize)
	Inigo Quilez's smooth bilinear with a smoother blend but worse derivative properties at the ends http://www.iquilezles.org/www/articles/texture/texture.htm More...
vec4	textureRectLod_bicubic (sampler2D tex, vec2 P, float lod, vec2 invSize)
	4x4 bicubic filter using 4 bilinear texture lookups See GPU Gems 2: "Fast Third-Order Texture Filtering", Sigg & Hadwiger: http://http.developer.nvidia.com/GPUGems2/gpugems2_chapter20.html as implemented by http://vec3.ca/bicubic-filtering-in-fewer-taps/ and https://www.shadertoy.com/view/4df3Dn More...
vec4	textureRectLod_smootherstep (sampler2D tex, vec2 P, float lod, vec2 invSize)
	Inigo Quilez's smooth bilinear http://www.iquilezles.org/www/articles/texture/texture.htm More...
vec4	textureRectLod_smoothstep (sampler2D tex, vec2 P, float lod, vec2 invSize)
	Inigo Quilez's smooth bilinear with a smoother blend but worse derivative properties at the ends http://www.iquilezles.org/www/articles/texture/texture.htm More...

Detailed Description

Shader program.

Member Function Documentation

bicubic_g0()

float glsl::textureFilter_glsl::bicubic_g0 ( float  a )

inline

bicubic_g1()

float glsl::textureFilter_glsl::bicubic_g1 ( float  a )

inline

bicubic_h0()

float glsl::textureFilter_glsl::bicubic_h0 ( float  a )

inline

bicubic_h1()

float glsl::textureFilter_glsl::bicubic_h1 ( float  a )

inline

bicubic_w0()

float glsl::textureFilter_glsl::bicubic_w0 ( float  a )

inline

bicubic_w1()

float glsl::textureFilter_glsl::bicubic_w1 ( float  a )

inline

bicubic_w2()

float glsl::textureFilter_glsl::bicubic_w2 ( float  a )

inline

bicubic_w3()

float glsl::textureFilter_glsl::bicubic_w3 ( float  a )

inline

texture2DLod_bicubic()

vec4 glsl::textureFilter_glsl::texture2DLod_bicubic ( sampler2D  tex, vec2  P, float  lod, vec2  size, vec2  invSize  )

inline

Parameters

P	in texture coordinates

texture2DLod_smootherstep()

vec4 glsl::textureFilter_glsl::texture2DLod_smootherstep ( sampler2D  tex, vec2  P, float  lod, vec2  size, vec2  invSize  )

inline

Inigo Quilez's smooth bilinear http://www.iquilezles.org/www/articles/texture/texture.htm

texture2DLod_smoothstep()

vec4 glsl::textureFilter_glsl::texture2DLod_smoothstep ( sampler2D  tex, vec2  P, float  lod, vec2  size, vec2  invSize  )

inline

Inigo Quilez's smooth bilinear with a smoother blend but worse derivative properties at the ends http://www.iquilezles.org/www/articles/texture/texture.htm

textureRectLod_bicubic()

vec4 glsl::textureFilter_glsl::textureRectLod_bicubic ( sampler2D  tex, vec2  P, float  lod, vec2  invSize  )

inline

4x4 bicubic filter using 4 bilinear texture lookups See GPU Gems 2: "Fast Third-Order Texture Filtering", Sigg & Hadwiger: http://http.developer.nvidia.com/GPUGems2/gpugems2_chapter20.html as implemented by http://vec3.ca/bicubic-filtering-in-fewer-taps/ and https://www.shadertoy.com/view/4df3Dn

Parameters

P

in texels

textureRectLod_smootherstep()

vec4 glsl::textureFilter_glsl::textureRectLod_smootherstep ( sampler2D  tex, vec2  P, float  lod, vec2  invSize  )

inline

Inigo Quilez's smooth bilinear http://www.iquilezles.org/www/articles/texture/texture.htm

textureRectLod_smoothstep()

vec4 glsl::textureFilter_glsl::textureRectLod_smoothstep ( sampler2D  tex, vec2  P, float  lod, vec2  invSize  )

inline

Inigo Quilez's smooth bilinear with a smoother blend but worse derivative properties at the ends http://www.iquilezles.org/www/articles/texture/texture.htm