fix retroizer

This commit is contained in:
zeromus 2020-06-20 21:51:55 -04:00
parent e24ddc9ebe
commit 703a51be09
2 changed files with 227 additions and 3 deletions

View File

@ -0,0 +1,218 @@
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
////
//// VERTEX SHADER : STOLEN FROM NEIGHBOURING SHADERS
////
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
//Yeah, I'm sorry this uses really old non-generic attributes
//that's just how old this code is; support on ancient graphics cards is helpful
#ifdef VERTEX
uniform mat4 modelViewProj;
void main()
{
gl_Position = modelViewProj * gl_Vertex;
gl_TexCoord[0] = gl_MultiTexCoord0;
}
#endif //VERTEX
#ifdef FRAGMENT
uniform struct
{
vec2 video_size;
vec2 texture_size;
vec2 output_size;
} IN;
uniform float Time;
uniform sampler2D s_p;
float saturate(float x)
{
return max(0, min(1, x));
}
vec2 saturate(vec2 x)
{
return max(vec2(0.0,0.0), min(vec2(1.0,1.0), x));
}
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
//// EFFECT CONSTANTS : TWEAK THEM!
////
// Size of the border effect
const vec2 OverscanMaskHardness = vec2(12.0f ,12.0f );
// Attenuation of the border effect
const float OverscanMaskPower = 4.0f;
// Intensity of the border effect
const float OverscanIntensity = 0.96f;
// Intensity of the TV Corners (round-ness) deformation
const float TVDeformInstensity = 0.02f;
// How much R, G and B are offset : default is -0.333 pixels in fake-pixel-space
const float ColorFringeIntensity = -0.666;
// How much luminosity is output by a fake-pixel
const float FakePixelMaskGain = 0.75f;
// How much luminosity is output between fake-pixels (adds to the fake-pixel value)
const float FakePixelMaskOffset = 0.55f;
// How sharp will appear the pixels (Horizontal Sharpness, Vertical Sharpness A.K.A Scanlines)
const vec2 FakePixelMaskPower = vec2(0.150f ,2.0f );
// Scanline Off Sync (Slides one line out of two)
const float ScanlineOffSync = 0.25;
// Base Brightness
const float BaseBrightness = 0.55f;
// How much the Fake-Pixel effect is Active (0.0 = normal image, 1.0 = full FakePixel Effect)
const float FakePixelEffectBlend = 0.95f;
// Ghost Sampling : enable define to activate
#define GHOST_SAMPLING;
const float GhostLatencyIntensity = 0.03f;
// Number of samples (higer is slower)
const int GhostNumSamples = 32;
// Latency of the RGB Signal (per-signal, in screen width percentage)
const vec3 SignalLatencyRGB = vec3(0.184f,0.08f,0.0624f);
// Attenuation of the ghosting latency
const float SignalLatencyAttenuation = 1.0f;
// Bloom : enable define to activate
#define BLOOM;
const float BloomIntensity = 0.75f;
const float BloomExponent = 1.00f;
const float BloomWeights[25] = float[] (
0.003765, 0.015019, 0.023792, 0.015019, 0.003765,
0.015019, 0.059912, 0.094907, 0.059912, 0.015019,
0.023792, 0.094907, 0.150342, 0.094907, 0.023792,
0.015019, 0.059912, 0.094907, 0.059912, 0.015019,
0.003765, 0.015019, 0.023792, 0.015019, 0.003765
);
const float BloomPositions[5] = float[] ( -2, -1, 0 , 1 , 2 );
////
////
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
float expow(float value, float exponent) {
return mix(1.0f,pow(value,max(exponent,1.0f)),saturate(exponent));
}
//the code that calls expow() carefully builds vec2 for some reason and calls this only to have it implicitly thrown away (which is a warning)
//so this was added to get rid of the warning
float expow(vec2 value, vec2 exponent) {
return mix(1.0f,pow(value.x,max(exponent.x,1.0f)),saturate(exponent.x));
}
float expow(vec2 value, float exponent) {
return mix(1.0f,pow(value.x,max(exponent,1.0f)),saturate(exponent));
}
// MultiSampling for ghosting effect
vec3 GhostSample(vec2 t, float latency) {
vec3 Out = texture2D(s_p,t).rgb;
float Weight = 1.0f;
vec2 Direction = vec2(-latency,0.0f);
for(int i=1; i < GhostNumSamples; i++) {
float curweight = pow(1.0f-(float(i)/GhostNumSamples),1.0f/SignalLatencyAttenuation);
Out += GhostLatencyIntensity * curweight * texture2D(s_p,saturate(t+(1.0f-curweight)*Direction)).xyz;
Weight += GhostLatencyIntensity * curweight;
}
return Out/Weight;
}
// MultiSampling for ghosting effect
vec3 Bloom(vec2 t, vec2 r) {
vec3 Out = vec3(0,0,0);
for(int j = 0; j < 5; j++)
for(int i = 0; i < 5; i++)
{
vec2 offset = vec2(BloomPositions[i],BloomPositions[j]) / r;
Out += texture2D(s_p, t + offset).rgb * BloomWeights[i*5+j];
}
return pow(Out, vec3(BloomExponent,BloomExponent,BloomExponent)) * BloomIntensity;
}
// Compositing of the TV Emulation
vec3 TVEffect(vec2 in_Position, vec2 FakeResolution, float Time) {
// TV Deformation
vec2 ScreenPos = in_Position + dot(in_Position-0.5f,in_Position-0.5f)*(in_Position-0.5f)* TVDeformInstensity;
// Apply Off-Sync
ScreenPos += (ScanlineOffSync/FakeResolution.x) * vec2(sin((Time*30*3.1415926)+(ScreenPos.y*3.1415926*FakeResolution.y)),0);
// Sampling 3 Images biased to simulate TV RGB Offset
#ifdef GHOST_SAMPLING
vec3 latencyweight = vec3(0.0f,0.0f,0.0f);
for(int i=1; i < GhostNumSamples; i++) {
latencyweight += texture2D(s_p, ScreenPos + vec2(1.0f/FakeResolution.x,0.0f)).xyz;
}
vec3 LatencyRGB = SignalLatencyRGB * (1.0-(latencyweight/GhostNumSamples));
vec3 SMP_Red = GhostSample((ScreenPos),LatencyRGB.x).xyz;
vec3 SMP_Green = GhostSample((ScreenPos) + ((vec2(ColorFringeIntensity,0.0f))/FakeResolution),LatencyRGB.y).xyz;
vec3 SMP_Blue = GhostSample((ScreenPos) + ((vec2(ColorFringeIntensity*2.0f,0.0f))/FakeResolution),LatencyRGB.z).xyz;
#else
vec3 SMP_Red = texture2D(s_p, (ScreenPos)).xyz;
vec3 SMP_Green = texture2D(s_p, (ScreenPos) + ((vec2(ColorFringeIntensity,0.0f))/FakeResolution)).xyz;
vec3 SMP_Blue = texture2D(s_p, (ScreenPos) + ((vec2(ColorFringeIntensity*2.0f,0.0f))/FakeResolution)).xyz;
#endif
#ifdef BLOOM
vec3 bloom = Bloom(ScreenPos, FakeResolution);
SMP_Red += bloom.r;
SMP_Green += bloom.g;
SMP_Blue += bloom.b;
#endif
// Apply base Brightness
SMP_Red *= BaseBrightness;
SMP_Green *= BaseBrightness;
SMP_Blue *= BaseBrightness;
// Overscan Darkening Mask
float ScreenMaskPower = 1.0f/OverscanMaskPower;
vec2 ScreenMask = pow(saturate(ScreenPos*(1.0f-ScreenPos)*OverscanMaskHardness),vec2(ScreenMaskPower,ScreenMaskPower));
float mask = mix(1.0, ScreenMask.x * ScreenMask.y, OverscanIntensity);
// CRT Cell Masks (HorizontalRGB+Scanline)
float PixelMaskR = expow(saturate(4*fract(ScreenPos.x*FakeResolution.x)*(1.0f-fract(ScreenPos.x*FakeResolution.x))),FakePixelMaskPower.x);
float PixelMaskG = expow(saturate(4*fract(ScreenPos.x*FakeResolution.x+vec2(ColorFringeIntensity,0.0f))*(1.0f-fract(ScreenPos.x*FakeResolution.x+vec2(ColorFringeIntensity,0.0f)))),FakePixelMaskPower.x);
float PixelMaskB = expow(saturate(4*fract(ScreenPos.x*FakeResolution.x+vec2(ColorFringeIntensity*2.0f,0.0f))*(1.0f-fract(ScreenPos.x*FakeResolution.x+vec2(ColorFringeIntensity*2.0f,0.0f)))),FakePixelMaskPower.x);
float PixelMaskScanline = pow(saturate(4*fract(ScreenPos.y*FakeResolution.y)*(1.0f-fract(ScreenPos.y*FakeResolution.y))),FakePixelMaskPower.y);
vec3 PixelRGB = vec3 (
((PixelMaskR*PixelMaskScanline * FakePixelMaskGain)+FakePixelMaskOffset) * SMP_Red.x ,
((PixelMaskG*PixelMaskScanline * FakePixelMaskGain)+FakePixelMaskOffset) * SMP_Green.y ,
((PixelMaskB*PixelMaskScanline * FakePixelMaskGain)+FakePixelMaskOffset) * SMP_Blue.z
);
// Non-Pixelated Image
vec3 ImageRGB = texture2D(s_p, ScreenPos).xyz;
return mix(ImageRGB, PixelRGB, FakePixelEffectBlend) * mask;
}
void main()
{
vec4 color = vec4(1.0f,1.0f,1.0f,1.0f);
color.xyz = TVEffect(gl_TexCoord[0].xy, IN.texture_size, Time);
gl_FragColor = color;
}
#endif

View File

@ -81,7 +81,7 @@ void main_vertex
#define BLOOM;
static const float BloomIntensity = 0.75f;
static const float BloomExponent = 1.00f;
static const float[5][5] BloomWeights =
static const float BloomWeights[5][5] =
{
{0.003765, 0.015019, 0.023792, 0.015019, 0.003765},
{0.015019, 0.059912, 0.094907, 0.059912, 0.015019},
@ -89,7 +89,7 @@ void main_vertex
{0.015019, 0.059912, 0.094907, 0.059912, 0.015019},
{0.003765, 0.015019, 0.023792, 0.015019, 0.003765}
};
static const float[5] BloomPositions = { -2, -1, 0 , 1 , 2};
static const float BloomPositions[5] = { -2, -1, 0 , 1 , 2};
////
@ -101,6 +101,12 @@ float expow(float value, float exponent) {
return lerp(1.0f,pow(value,max(exponent,1.0f)),saturate(exponent));
}
//the code that calls expow() carefully builds float2 for some reason and calls this only to have it implicitly thrown away (which is a warning)
//so this was added to get rid of the warning
float expow(float2 value, float2 exponent) {
return lerp(1.0f,pow(value,max(exponent,1.0f)),saturate(exponent)).x;
}
// MultiSampling for ghosting effect
float3 GhostSample(sampler2D s, float2 t, float latency) {
@ -199,7 +205,7 @@ float4 main_fragment
uniform float Time
) : COLOR
{
vec4 color = vec4(1.0f,1.0f,1.0f,1.0f);
float4 color = float4(1.0f,1.0f,1.0f,1.0f);
color.xyz = TVEffect(TexCoord,FakeResolution, s_p, Time);
return color;
}