Since there’s no changeable parameters for this shader on Android, does any one know what lines to edit to remove the curvature? I tried to convert a GL version without the curvature to GLSL, but it seems like it’s a little over my head, as I haven’t been able to get it to work.
Thanks in advance!
There’s a GLSL version with parameters. Just go into shaders_glsl/hunterk/crt instead of shaders_glsl/crt.
Yeah, I saw that one, but it doesn’t work for me on my Nexus Player (x86)
ugh, these mobile GPUs are gonna make me go crazy >.<
Anyway, would you care to try this one? The warp code is only working on the upper-left corner for some reason, but I defaulted it to flat anyway, so you should be fine:
// -- config -- //
#pragma parameter hardScan "hardScan" -8.0 -20.0 0.0 1.0 // default, minimum, maximum, optional step
#pragma parameter hardPix "hardPix" -3.0 -20.0 0.0 1.0
#pragma parameter warpX "warpX" 0.0 0.0 0.125 0.01
#pragma parameter warpY "warpY" 0.0 0.0 0.125 0.01
#pragma parameter maskDark "maskDark" 0.5 0.0 2.0 0.1
#pragma parameter maskLight "maskLight" 1.5 0.0 2.0 0.1
#pragma parameter scaleInLinearGamma "scaleInLinearGamma" 1.0 0.0 1.0 1.0
#pragma parameter shadowMask "shadowMask" 1.0 0.0 1.0 1.0
#pragma parameter brightboost "brightness" 1.0 0.0 2.0 0.05
#ifdef PARAMETER_UNIFORM // If the shader implementation understands #pragma parameters, this is defined.
uniform float hardScan;
uniform float hardPix;
uniform float warpX;
uniform float warpY;
uniform float maskDark;
uniform float maskLight;
uniform float scaleInLinearGamma;
uniform float shadowMask;
uniform float brightboost;
#else
#define hardScan -8.0
#define hardPix -3.0
#define warpX 0.031
#define warpY 0.041
#define maskDark 0.5
#define maskLight 1.5
#define scaleInLinearGamma 1
#define shadowMask 1
#define brightboost 1
#endif
// ------------- //
// GLSL shader autogenerated by cg2glsl.py.
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_VARYING float _frame_rotation;
COMPAT_VARYING vec4 _color1;
struct output_dummy {
vec4 _color1;
};
struct input_dummy {
vec2 _video_size;
vec2 _texture_size;
vec2 _output_dummy_size;
float _frame_count;
float _frame_direction;
float _frame_rotation;
};
vec4 _oPosition1;
vec4 _r0005;
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
void main()
{
vec4 _oColor;
vec2 _otexCoord;
_r0005 = VertexCoord.x*MVPMatrix[0];
_r0005 = _r0005 + VertexCoord.y*MVPMatrix[1];
_r0005 = _r0005 + VertexCoord.z*MVPMatrix[2];
_r0005 = _r0005 + VertexCoord.w*MVPMatrix[3];
_oPosition1 = _r0005;
_oColor = COLOR;
_otexCoord = TexCoord.xy;
gl_Position = _r0005;
COL0 = COLOR;
TEX0.xy = TexCoord.xy;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_VARYING float _frame_rotation;
COMPAT_VARYING vec4 _color;
struct output_dummy {
vec4 _color;
};
struct input_dummy {
vec2 _video_size;
vec2 _texture_size;
vec2 _output_dummy_size;
float _frame_count;
float _frame_direction;
float _frame_rotation;
};
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
#define warp vec2(warpX,warpY)
// Emulated input resolution.
vec2 res=TextureSize.xy;
// Hardness of scanline.
// -8.0 = soft
// -16.0 = medium
//float hardScan=-8.0;
// Hardness of pixels in scanline.
// -2.0 = soft
// -4.0 = hard
//float hardPix=-3.0;
// Display warp.
// 0.0 = none
// 1.0/8.0 = extreme
//vec2 warp=vec2(1.0/32.0,1.0/24.0);
// Amount of shadow mask.
//float maskDark=0.5;
//float maskLight=1.5;
//------------------------------------------------------------------------
// sRGB to Linear.
// Assuming using sRGB typed textures this should not be needed.
float ToLinear1(float c){return(c<=0.04045)?c/12.92:pow((c+0.055)/1.055,2.4);}
vec3 ToLinear(vec3 c){return vec3(ToLinear1(c.r),ToLinear1(c.g),ToLinear1(c.b));}
// Linear to sRGB.
// Assuming using sRGB typed textures this should not be needed.
float ToSrgb1(float c){return(c<0.0031308?c*12.92:1.055*pow(c,0.41666)-0.055);}
vec3 ToSrgb(vec3 c){return vec3(ToSrgb1(c.r),ToSrgb1(c.g),ToSrgb1(c.b));}
// Nearest emulated sample given floating point position and texel offset.
// Also zero's off screen.
vec3 Fetch(vec2 pos,vec2 off){
pos=(floor(pos*res+off)+vec2(0.5,0.5))/res;
return ToLinear(1.2 * COMPAT_TEXTURE(Texture,pos.xy,-16.0).rgb);}
// Distance in emulated pixels to nearest texel.
vec2 Dist(vec2 pos){pos=pos*res;return -((pos-floor(pos))-vec2(0.5));}
// 1D Gaussian.
float Gaus(float pos,float scale){return exp2(scale*pos*pos);}
// 3-tap Gaussian filter along horz line.
vec3 Horz3(vec2 pos,float off){
vec3 b=Fetch(pos,vec2(-1.0,off));
vec3 c=Fetch(pos,vec2( 0.0,off));
vec3 d=Fetch(pos,vec2( 1.0,off));
float dst=Dist(pos).x;
// Convert distance to weight.
float scale=hardPix;
float wb=Gaus(dst-1.0,scale);
float wc=Gaus(dst+0.0,scale);
float wd=Gaus(dst+1.0,scale);
// Return filtered sample.
return (b*wb+c*wc+d*wd)/(wb+wc+wd);}
// 5-tap Gaussian filter along horz line.
vec3 Horz5(vec2 pos,float off){
vec3 a=Fetch(pos,vec2(-2.0,off));
vec3 b=Fetch(pos,vec2(-1.0,off));
vec3 c=Fetch(pos,vec2( 0.0,off));
vec3 d=Fetch(pos,vec2( 1.0,off));
vec3 e=Fetch(pos,vec2( 2.0,off));
float dst=Dist(pos).x;
// Convert distance to weight.
float scale=hardPix;
float wa=Gaus(dst-2.0,scale);
float wb=Gaus(dst-1.0,scale);
float wc=Gaus(dst+0.0,scale);
float wd=Gaus(dst+1.0,scale);
float we=Gaus(dst+2.0,scale);
// Return filtered sample.
return (a*wa+b*wb+c*wc+d*wd+e*we)/(wa+wb+wc+wd+we);}
// Return scanline weight.
float Scan(vec2 pos,float off){
float dst=Dist(pos).y;
return Gaus(dst+off,hardScan);}
// Allow nearest three lines to effect pixel.
vec3 Tri(vec2 pos){
vec3 a=Horz3(pos,-1.0);
vec3 b=Horz5(pos, 0.0);
vec3 c=Horz3(pos, 1.0);
float wa=Scan(pos,-1.0);
float wb=Scan(pos, 0.0);
float wc=Scan(pos, 1.0);
return a*wa+b*wb+c*wc;}
// Distortion of scanlines, and end of screen alpha.
vec2 Warp(vec2 pos){
pos=pos*2.0-1.0;
pos*=vec2(1.0+(pos.y*pos.y)*warp.x,1.0+(pos.x*pos.x)*warp.y);
return pos*0.5+0.5;}
// Shadow mask.
vec3 Mask(vec2 pos){
pos.x+=pos.y*3.0;
vec3 mask=vec3(maskDark,maskDark,maskDark);
pos.x=fract(pos.x/6.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
return mask;}
void main()
{
vec4 Color;
vec2 FragCoord = TEX0.xy*(TextureSize.xy/InputSize.xy)*(InputSize.xy/TextureSize.xy);
vec2 pos = Warp(FragCoord.xy);
Color.rgb = Tri(pos);
if(shadowMask > 0.5)
Color.rgb *= Mask(gl_FragCoord.xy);
Color.a=1.0;
Color = vec4(ToSrgb(Color.rgb), Color.a);
output_dummy _OUT;
_OUT._color = Color;
FragColor = _OUT._color;
return;
}
#endif
[QUOTE=hunterk;33464]ugh, these mobile GPUs are gonna make me go crazy >.<
Anyway, would you care to try this one? The warp code is only working on the upper-left corner for some reason, but I defaulted it to flat anyway, so you should be fine:
// -- config -- //
#pragma parameter hardScan "hardScan" -8.0 -20.0 0.0 1.0 // default, minimum, maximum, optional step
#pragma parameter hardPix "hardPix" -3.0 -20.0 0.0 1.0
#pragma parameter warpX "warpX" 0.0 0.0 0.125 0.01
#pragma parameter warpY "warpY" 0.0 0.0 0.125 0.01
#pragma parameter maskDark "maskDark" 0.5 0.0 2.0 0.1
#pragma parameter maskLight "maskLight" 1.5 0.0 2.0 0.1
#pragma parameter scaleInLinearGamma "scaleInLinearGamma" 1.0 0.0 1.0 1.0
#pragma parameter shadowMask "shadowMask" 1.0 0.0 1.0 1.0
#pragma parameter brightboost "brightness" 1.0 0.0 2.0 0.05
#ifdef PARAMETER_UNIFORM // If the shader implementation understands #pragma parameters, this is defined.
uniform float hardScan;
uniform float hardPix;
uniform float warpX;
uniform float warpY;
uniform float maskDark;
uniform float maskLight;
uniform float scaleInLinearGamma;
uniform float shadowMask;
uniform float brightboost;
#else
#define hardScan -8.0
#define hardPix -3.0
#define warpX 0.031
#define warpY 0.041
#define maskDark 0.5
#define maskLight 1.5
#define scaleInLinearGamma 1
#define shadowMask 1
#define brightboost 1
#endif
// ------------- //
// GLSL shader autogenerated by cg2glsl.py.
#if defined(VERTEX)
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_VARYING float _frame_rotation;
COMPAT_VARYING vec4 _color1;
struct output_dummy {
vec4 _color1;
};
struct input_dummy {
vec2 _video_size;
vec2 _texture_size;
vec2 _output_dummy_size;
float _frame_count;
float _frame_direction;
float _frame_rotation;
};
vec4 _oPosition1;
vec4 _r0005;
COMPAT_ATTRIBUTE vec4 VertexCoord;
COMPAT_ATTRIBUTE vec4 COLOR;
COMPAT_ATTRIBUTE vec4 TexCoord;
COMPAT_VARYING vec4 COL0;
COMPAT_VARYING vec4 TEX0;
uniform mat4 MVPMatrix;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
void main()
{
vec4 _oColor;
vec2 _otexCoord;
_r0005 = VertexCoord.x*MVPMatrix[0];
_r0005 = _r0005 + VertexCoord.y*MVPMatrix[1];
_r0005 = _r0005 + VertexCoord.z*MVPMatrix[2];
_r0005 = _r0005 + VertexCoord.w*MVPMatrix[3];
_oPosition1 = _r0005;
_oColor = COLOR;
_otexCoord = TexCoord.xy;
gl_Position = _r0005;
COL0 = COLOR;
TEX0.xy = TexCoord.xy;
}
#elif defined(FRAGMENT)
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif
COMPAT_VARYING float _frame_rotation;
COMPAT_VARYING vec4 _color;
struct output_dummy {
vec4 _color;
};
struct input_dummy {
vec2 _video_size;
vec2 _texture_size;
vec2 _output_dummy_size;
float _frame_count;
float _frame_direction;
float _frame_rotation;
};
uniform sampler2D Texture;
COMPAT_VARYING vec4 TEX0;
uniform int FrameDirection;
uniform int FrameCount;
uniform COMPAT_PRECISION vec2 OutputSize;
uniform COMPAT_PRECISION vec2 TextureSize;
uniform COMPAT_PRECISION vec2 InputSize;
#define warp vec2(warpX,warpY)
// Emulated input resolution.
vec2 res=TextureSize.xy;
// Hardness of scanline.
// -8.0 = soft
// -16.0 = medium
//float hardScan=-8.0;
// Hardness of pixels in scanline.
// -2.0 = soft
// -4.0 = hard
//float hardPix=-3.0;
// Display warp.
// 0.0 = none
// 1.0/8.0 = extreme
//vec2 warp=vec2(1.0/32.0,1.0/24.0);
// Amount of shadow mask.
//float maskDark=0.5;
//float maskLight=1.5;
//------------------------------------------------------------------------
// sRGB to Linear.
// Assuming using sRGB typed textures this should not be needed.
float ToLinear1(float c){return(c<=0.04045)?c/12.92:pow((c+0.055)/1.055,2.4);}
vec3 ToLinear(vec3 c){return vec3(ToLinear1(c.r),ToLinear1(c.g),ToLinear1(c.b));}
// Linear to sRGB.
// Assuming using sRGB typed textures this should not be needed.
float ToSrgb1(float c){return(c<0.0031308?c*12.92:1.055*pow(c,0.41666)-0.055);}
vec3 ToSrgb(vec3 c){return vec3(ToSrgb1(c.r),ToSrgb1(c.g),ToSrgb1(c.b));}
// Nearest emulated sample given floating point position and texel offset.
// Also zero's off screen.
vec3 Fetch(vec2 pos,vec2 off){
pos=(floor(pos*res+off)+vec2(0.5,0.5))/res;
return ToLinear(1.2 * COMPAT_TEXTURE(Texture,pos.xy,-16.0).rgb);}
// Distance in emulated pixels to nearest texel.
vec2 Dist(vec2 pos){pos=pos*res;return -((pos-floor(pos))-vec2(0.5));}
// 1D Gaussian.
float Gaus(float pos,float scale){return exp2(scale*pos*pos);}
// 3-tap Gaussian filter along horz line.
vec3 Horz3(vec2 pos,float off){
vec3 b=Fetch(pos,vec2(-1.0,off));
vec3 c=Fetch(pos,vec2( 0.0,off));
vec3 d=Fetch(pos,vec2( 1.0,off));
float dst=Dist(pos).x;
// Convert distance to weight.
float scale=hardPix;
float wb=Gaus(dst-1.0,scale);
float wc=Gaus(dst+0.0,scale);
float wd=Gaus(dst+1.0,scale);
// Return filtered sample.
return (b*wb+c*wc+d*wd)/(wb+wc+wd);}
// 5-tap Gaussian filter along horz line.
vec3 Horz5(vec2 pos,float off){
vec3 a=Fetch(pos,vec2(-2.0,off));
vec3 b=Fetch(pos,vec2(-1.0,off));
vec3 c=Fetch(pos,vec2( 0.0,off));
vec3 d=Fetch(pos,vec2( 1.0,off));
vec3 e=Fetch(pos,vec2( 2.0,off));
float dst=Dist(pos).x;
// Convert distance to weight.
float scale=hardPix;
float wa=Gaus(dst-2.0,scale);
float wb=Gaus(dst-1.0,scale);
float wc=Gaus(dst+0.0,scale);
float wd=Gaus(dst+1.0,scale);
float we=Gaus(dst+2.0,scale);
// Return filtered sample.
return (a*wa+b*wb+c*wc+d*wd+e*we)/(wa+wb+wc+wd+we);}
// Return scanline weight.
float Scan(vec2 pos,float off){
float dst=Dist(pos).y;
return Gaus(dst+off,hardScan);}
// Allow nearest three lines to effect pixel.
vec3 Tri(vec2 pos){
vec3 a=Horz3(pos,-1.0);
vec3 b=Horz5(pos, 0.0);
vec3 c=Horz3(pos, 1.0);
float wa=Scan(pos,-1.0);
float wb=Scan(pos, 0.0);
float wc=Scan(pos, 1.0);
return a*wa+b*wb+c*wc;}
// Distortion of scanlines, and end of screen alpha.
vec2 Warp(vec2 pos){
pos=pos*2.0-1.0;
pos*=vec2(1.0+(pos.y*pos.y)*warp.x,1.0+(pos.x*pos.x)*warp.y);
return pos*0.5+0.5;}
// Shadow mask.
vec3 Mask(vec2 pos){
pos.x+=pos.y*3.0;
vec3 mask=vec3(maskDark,maskDark,maskDark);
pos.x=fract(pos.x/6.0);
if(pos.x<0.333)mask.r=maskLight;
else if(pos.x<0.666)mask.g=maskLight;
else mask.b=maskLight;
return mask;}
void main()
{
vec4 Color;
vec2 FragCoord = TEX0.xy*(TextureSize.xy/InputSize.xy)*(InputSize.xy/TextureSize.xy);
vec2 pos = Warp(FragCoord.xy);
Color.rgb = Tri(pos);
if(shadowMask > 0.5)
Color.rgb *= Mask(gl_FragCoord.xy);
Color.a=1.0;
Color = vec4(ToSrgb(Color.rgb), Color.a);
output_dummy _OUT;
_OUT._color = Color;
FragColor = _OUT._color;
return;
}
#endif
[/QUOTE]
Thanks for the help, however, this revision behaves the same way; I can select the shader and it seems like it loads, but there’s no effect… It’s as if there in no shader applied.
If it helps, your shader also doesn’t work correctly on the Nexus 5, but this time it behaves differently. It loads up, but all the colors look overexposed and just plain messed up.
Thanks for trying. I appreciate it!