mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-23 00:01:31 +11:00
better port of metacrt
This commit is contained in:
parent
65e60b9f5d
commit
4e49d48bfd
|
@ -1,10 +1,22 @@
|
|||
shaders = 2
|
||||
shaders = 4
|
||||
|
||||
shader0 = shaders/metacrt/bufC.slang
|
||||
scale_type0 = viewport
|
||||
filter_linear0 = true
|
||||
float_framebuffer0 = true
|
||||
|
||||
shader1 = ../anti-aliasing/shaders/fxaa.slang
|
||||
shader1 = shaders/metacrt/bufD.slang
|
||||
scale_type1 = viewport
|
||||
filter_linear1 = true
|
||||
float_framebuffer1 = true
|
||||
|
||||
shader2 = shaders/metacrt/Image.slang
|
||||
scale_type2 = viewport
|
||||
filter_linear2 = true
|
||||
float_framebuffer2 = true
|
||||
|
||||
shader3 = ../anti-aliasing/shaders/fxaa.slang
|
||||
filter_linear3 = true
|
||||
|
||||
textures = "cubeMap;table"
|
||||
cubeMap = shaders/metacrt/basilica.png
|
||||
|
|
|
@ -1,367 +0,0 @@
|
|||
#version 450
|
||||
|
||||
// Meta CRT - @P_Malin
|
||||
// https://www.shadertoy.com/view/4dlyWX#
|
||||
// In which I add and remove aliasing
|
||||
|
||||
layout(push_constant) uniform Push
|
||||
{
|
||||
vec4 SourceSize;
|
||||
vec4 OriginalSize;
|
||||
vec4 OutputSize;
|
||||
uint FrameCount;
|
||||
} params;
|
||||
|
||||
layout(std140, set = 0, binding = 0) uniform UBO
|
||||
{
|
||||
mat4 MVP;
|
||||
} global;
|
||||
|
||||
#pragma stage vertex
|
||||
layout(location = 0) in vec4 Position;
|
||||
layout(location = 1) in vec2 TexCoord;
|
||||
layout(location = 0) out vec2 vTexCoord;
|
||||
|
||||
void main()
|
||||
{
|
||||
gl_Position = global.MVP * Position;
|
||||
vTexCoord = TexCoord;
|
||||
}
|
||||
|
||||
#pragma stage fragment
|
||||
layout(location = 0) in vec2 vTexCoord;
|
||||
layout(location = 0) out vec4 FragColor;
|
||||
layout(set = 0, binding = 2) uniform sampler2D Source;
|
||||
|
||||
#define iGlobalTime float(params.FrameCount)
|
||||
#define iResolution params.SourceSize
|
||||
#define iChannel0 Source
|
||||
|
||||
// Postprocessing Pass
|
||||
// Motion blur, Depth of Field, Vignetting & Tonemap
|
||||
|
||||
|
||||
#define ENABLE_DOF
|
||||
#define ENABLE_MOTION_BLUR
|
||||
|
||||
///////////////////////////
|
||||
// Hash Functions
|
||||
///////////////////////////
|
||||
|
||||
// From: Hash without Sine by Dave Hoskins
|
||||
// https://www.shadertoy.com/view/4djSRW
|
||||
|
||||
// *** Use this for integer stepped ranges, ie Value-Noise/Perlin noise functions.
|
||||
//#define HASHSCALE1 .1031
|
||||
//#define HASHSCALE3 vec3(.1031, .1030, .0973)
|
||||
//#define HASHSCALE4 vec4(1031, .1030, .0973, .1099)
|
||||
|
||||
// For smaller input rangers like audio tick or 0-1 UVs use these...
|
||||
#define HASHSCALE1 443.8975
|
||||
#define HASHSCALE3 vec3(443.897, 441.423, 437.195)
|
||||
#define HASHSCALE4 vec3(443.897, 441.423, 437.195, 444.129)
|
||||
|
||||
|
||||
//----------------------------------------------------------------------------------------
|
||||
// 2 out, 1 in...
|
||||
vec2 hash21(float p)
|
||||
{
|
||||
vec3 p3 = fract(vec3(p) * HASHSCALE3);
|
||||
p3 += dot(p3, p3.yzx + 19.19);
|
||||
return fract((p3.xx+p3.yz)*p3.zy);
|
||||
|
||||
}
|
||||
|
||||
/// 2 out, 3 in...
|
||||
vec2 hash23(vec3 p3)
|
||||
{
|
||||
p3 = fract(p3 * HASHSCALE3);
|
||||
p3 += dot(p3, p3.yzx+19.19);
|
||||
return fract((p3.xx+p3.yz)*p3.zy);
|
||||
}
|
||||
|
||||
// 1 out, 3 in...
|
||||
float hash13(vec3 p3)
|
||||
{
|
||||
p3 = fract(p3 * HASHSCALE1);
|
||||
p3 += dot(p3, p3.yzx + 19.19);
|
||||
return fract((p3.x + p3.y) * p3.z);
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////
|
||||
// Data Storage
|
||||
///////////////////////////
|
||||
|
||||
vec4 LoadVec4( sampler2D tex, in ivec2 vAddr )
|
||||
{
|
||||
return texelFetch( tex, vAddr, 0 );
|
||||
}
|
||||
|
||||
vec3 LoadVec3( sampler2D tex, in ivec2 vAddr )
|
||||
{
|
||||
return LoadVec4( tex, vAddr ).xyz;
|
||||
}
|
||||
|
||||
bool AtAddress( ivec2 p, ivec2 c ) { return all( equal( p, c ) ); }
|
||||
|
||||
void StoreVec4( in ivec2 vAddr, in vec4 vValue, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
fragColor = AtAddress( fragCoord, vAddr ) ? vValue : fragColor;
|
||||
}
|
||||
|
||||
void StoreVec3( in ivec2 vAddr, in vec3 vValue, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
StoreVec4( vAddr, vec4( vValue, 0.0 ), fragColor, fragCoord);
|
||||
}
|
||||
|
||||
///////////////////////////
|
||||
// Camera
|
||||
///////////////////////////
|
||||
|
||||
struct CameraState
|
||||
{
|
||||
vec3 vPos;
|
||||
vec3 vTarget;
|
||||
float fFov;
|
||||
vec2 vJitter;
|
||||
float fPlaneInFocus;
|
||||
};
|
||||
|
||||
void Cam_LoadState( out CameraState cam, sampler2D tex, ivec2 addr )
|
||||
{
|
||||
vec4 vPos = LoadVec4( tex, addr + ivec2(0,0) );
|
||||
cam.vPos = vPos.xyz;
|
||||
vec4 targetFov = LoadVec4( tex, addr + ivec2(1,0) );
|
||||
cam.vTarget = targetFov.xyz;
|
||||
cam.fFov = targetFov.w;
|
||||
vec4 jitterDof = LoadVec4( tex, addr + ivec2(2,0) );
|
||||
cam.vJitter = jitterDof.xy;
|
||||
cam.fPlaneInFocus = jitterDof.z;
|
||||
}
|
||||
|
||||
void Cam_StoreState( ivec2 addr, const in CameraState cam, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
StoreVec4( addr + ivec2(0,0), vec4( cam.vPos, 0 ), fragColor, fragCoord );
|
||||
StoreVec4( addr + ivec2(1,0), vec4( cam.vTarget, cam.fFov ), fragColor, fragCoord );
|
||||
StoreVec4( addr + ivec2(2,0), vec4( cam.vJitter, cam.fPlaneInFocus, 0 ), fragColor, fragCoord );
|
||||
}
|
||||
|
||||
mat3 Cam_GetWorldToCameraRotMatrix( const CameraState cameraState )
|
||||
{
|
||||
vec3 vForward = normalize( cameraState.vTarget - cameraState.vPos );
|
||||
vec3 vRight = normalize( cross(vec3(0, 1, 0), vForward) );
|
||||
vec3 vUp = normalize( cross(vForward, vRight) );
|
||||
|
||||
return mat3( vRight, vUp, vForward );
|
||||
}
|
||||
|
||||
vec2 Cam_GetViewCoordFromUV( const in vec2 vUV )
|
||||
{
|
||||
vec2 vWindow = vUV * 2.0 - 1.0;
|
||||
vWindow.x *= iResolution.x / iResolution.y;
|
||||
|
||||
return vWindow;
|
||||
}
|
||||
|
||||
void Cam_GetCameraRay( const vec2 vUV, const CameraState cam, out vec3 vRayOrigin, out vec3 vRayDir )
|
||||
{
|
||||
vec2 vView = Cam_GetViewCoordFromUV( vUV );
|
||||
vRayOrigin = cam.vPos;
|
||||
float fPerspDist = 1.0 / tan( radians( cam.fFov ) );
|
||||
vRayDir = normalize( Cam_GetWorldToCameraRotMatrix( cam ) * vec3( vView, fPerspDist ) );
|
||||
}
|
||||
|
||||
vec2 Cam_GetUVFromWindowCoord( const in vec2 vWindow )
|
||||
{
|
||||
vec2 vScaledWindow = vWindow;
|
||||
vScaledWindow.x *= iResolution.y / iResolution.x;
|
||||
|
||||
return (vScaledWindow * 0.5 + 0.5);
|
||||
}
|
||||
|
||||
vec2 Cam_WorldToWindowCoord(const in vec3 vWorldPos, const in CameraState cameraState )
|
||||
{
|
||||
vec3 vOffset = vWorldPos - cameraState.vPos;
|
||||
vec3 vCameraLocal;
|
||||
|
||||
vCameraLocal = vOffset * Cam_GetWorldToCameraRotMatrix( cameraState );
|
||||
|
||||
vec2 vWindowPos = vCameraLocal.xy / (vCameraLocal.z * tan( radians( cameraState.fFov ) ));
|
||||
|
||||
return vWindowPos;
|
||||
}
|
||||
|
||||
float EncodeDepthAndObject( float depth, int objectId )
|
||||
{
|
||||
//depth = max( 0.0, depth );
|
||||
//objectId = max( 0, objectId + 1 );
|
||||
//return exp2(-depth) + float(objectId);
|
||||
return depth;
|
||||
}
|
||||
|
||||
float DecodeDepthAndObjectId( float value, out int objectId )
|
||||
{
|
||||
objectId = 0;
|
||||
return max(0.0, value);
|
||||
//objectId = int( floor( value ) ) - 1;
|
||||
//return abs( -log2(fract(value)) );
|
||||
}
|
||||
|
||||
///////////////////////////////
|
||||
|
||||
vec3 Tonemap( vec3 x )
|
||||
{
|
||||
float a = 0.010;
|
||||
float b = 0.132;
|
||||
float c = 0.010;
|
||||
float d = 0.163;
|
||||
float e = 0.101;
|
||||
|
||||
return ( x * ( a * x + b ) ) / ( x * ( c * x + d ) + e );
|
||||
}
|
||||
|
||||
|
||||
float GetVignetting( const in vec2 vUV, float fScale, float fPower, float fStrength )
|
||||
{
|
||||
vec2 vOffset = (vUV - 0.5) * sqrt(2.0) * fScale;
|
||||
|
||||
float fDist = max( 0.0, 1.0 - length( vOffset ) );
|
||||
|
||||
float fShade = 1.0 - pow( fDist, fPower );
|
||||
|
||||
fShade = 1.0 - fShade * fStrength;
|
||||
|
||||
return fShade;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
float GetCoC( float fDistance, float fPlaneInFocus )
|
||||
{
|
||||
#ifdef ENABLE_DOF
|
||||
// http://http.developer.nvidia.com/GPUGems/gpugems_ch23.html
|
||||
|
||||
float fAperture = min(1.0, fPlaneInFocus * fPlaneInFocus * 0.5);
|
||||
float fFocalLength = 0.03;
|
||||
|
||||
return abs(fAperture * (fFocalLength * (fDistance - fPlaneInFocus)) /
|
||||
(fDistance * (fPlaneInFocus - fFocalLength)));
|
||||
#else
|
||||
return 0.0f;
|
||||
#endif
|
||||
}
|
||||
|
||||
// Depth of field pass
|
||||
|
||||
#define BLUR_TAPS 64
|
||||
float fGolden = 3.141592 * (3.0 - sqrt(5.0));
|
||||
|
||||
#define MOD2 vec2(4.438975,3.972973)
|
||||
|
||||
float Hash( float p )
|
||||
{
|
||||
// https://www.shadertoy.com/view/4djSRW - Dave Hoskins
|
||||
vec2 p2 = fract(vec2(p) * MOD2);
|
||||
p2 += dot(p2.yx, p2.xy+19.19);
|
||||
return fract(p2.x * p2.y);
|
||||
}
|
||||
|
||||
|
||||
void main()
|
||||
{
|
||||
vec2 fragCoord = vTexCoord.xy * params.OutputSize.xy;
|
||||
CameraState camCurr;
|
||||
Cam_LoadState( camCurr, iChannel0, ivec2(0) );
|
||||
|
||||
CameraState camPrev;
|
||||
Cam_LoadState( camPrev, iChannel0, ivec2(3,0) );
|
||||
|
||||
vec2 vUV = fragCoord.xy / iResolution.xy;
|
||||
//vUV -= camCurr.vJitter / iResolution.xy; // TAA has removed jitter
|
||||
|
||||
vec4 vSample = texelFetch( iChannel0, ivec2(fragCoord.xy), 0 ).rgba;
|
||||
|
||||
int iObjectId;
|
||||
float fDepth = DecodeDepthAndObjectId( vSample.w, iObjectId );
|
||||
|
||||
vec3 vRayOrigin, vRayDir;
|
||||
|
||||
Cam_GetCameraRay( vUV, camCurr, vRayOrigin, vRayDir );
|
||||
vec3 vWorldPos = vRayOrigin + vRayDir * fDepth;
|
||||
|
||||
vec2 vPrevUV = Cam_GetUVFromWindowCoord( Cam_WorldToWindowCoord(vWorldPos, camPrev) );// - camPrev.vJitter / iResolution.xy;
|
||||
|
||||
vec3 vResult = vec3(0.0);
|
||||
|
||||
float fTot = 0.0;
|
||||
|
||||
float fPlaneInFocus = camCurr.fPlaneInFocus;
|
||||
|
||||
float fCoC = GetCoC( fDepth, camCurr.fPlaneInFocus );
|
||||
|
||||
float r = 1.0;
|
||||
vec2 vangle = vec2(0.0,fCoC); // Start angle
|
||||
|
||||
float fWeight = max( 0.001, fCoC );
|
||||
vResult.rgb = vSample.rgb * fWeight;
|
||||
fTot += fWeight;
|
||||
|
||||
#if defined(ENABLE_DOF) || defined(ENABLE_MOTION_BLUR)
|
||||
float fMotionBlurTaps = float(BLUR_TAPS);
|
||||
|
||||
float fShutterAngle = 0.5;
|
||||
|
||||
float f = 0.0;
|
||||
float fIndex = 0.0;
|
||||
for(int i=1; i<BLUR_TAPS; i++)
|
||||
{
|
||||
float fRandomT = Hash( iGlobalTime + fIndex + vUV.x + vUV.y * 12.345);
|
||||
float fOrderedT = fIndex / fMotionBlurTaps;
|
||||
|
||||
float fDofT = fOrderedT;
|
||||
float fMotionT = fRandomT;
|
||||
|
||||
vec2 vTapUV = vUV;
|
||||
#ifdef ENABLE_MOTION_BLUR
|
||||
vTapUV = mix( vTapUV, vPrevUV, (fMotionT - 0.5) * fShutterAngle );
|
||||
#endif
|
||||
|
||||
// http://blog.marmakoide.org/?p=1
|
||||
|
||||
float fTheta = fDofT * fGolden * fMotionBlurTaps;
|
||||
float fRadius = fCoC * sqrt( fDofT * fMotionBlurTaps ) / sqrt( fMotionBlurTaps );
|
||||
|
||||
vTapUV += vec2( sin(fTheta), cos(fTheta) ) * fRadius;
|
||||
|
||||
vec4 vTapSample = textureLod( iChannel0, vTapUV, 0.0 ).rgba;
|
||||
//vec4 vTapTexel = texelFetch( iChannel0, ivec2(vTapUV.xy * iResolution.xy), 0 ).rgba;
|
||||
|
||||
int iTapObjectId;
|
||||
float fTapDepth = DecodeDepthAndObjectId( vTapSample.w, iTapObjectId );
|
||||
|
||||
if ( fTapDepth > 0.0 )
|
||||
{
|
||||
float fCurrCoC = GetCoC( fTapDepth, fPlaneInFocus );
|
||||
|
||||
float fCurrWeight = max( 0.001, fCurrCoC );
|
||||
|
||||
vResult += vTapSample.rgb * fCurrWeight;
|
||||
fTot += fCurrWeight;
|
||||
}
|
||||
f += 1.0;
|
||||
fIndex += 1.0;
|
||||
}
|
||||
#endif
|
||||
vResult /= fTot;
|
||||
|
||||
FragColor = vec4(vResult, 1.0);
|
||||
|
||||
float fShade = GetVignetting( vUV, 0.7, 2.0, 1.0 );
|
||||
|
||||
FragColor.rgb *= fShade;
|
||||
|
||||
FragColor.rgb = Tonemap( FragColor.rgb ) * 2.0;
|
||||
FragColor.a = 1.0;
|
||||
}
|
File diff suppressed because it is too large
Load diff
|
@ -1,307 +0,0 @@
|
|||
#version 450
|
||||
|
||||
// Meta CRT - @P_Malin
|
||||
// https://www.shadertoy.com/view/4dlyWX#
|
||||
// In which I add and remove aliasing
|
||||
|
||||
layout(push_constant) uniform Push
|
||||
{
|
||||
vec4 SourceSize;
|
||||
vec4 OriginalSize;
|
||||
vec4 OutputSize;
|
||||
uint FrameCount;
|
||||
} params;
|
||||
|
||||
layout(std140, set = 0, binding = 0) uniform UBO
|
||||
{
|
||||
mat4 MVP;
|
||||
} global;
|
||||
|
||||
#pragma stage vertex
|
||||
layout(location = 0) in vec4 Position;
|
||||
layout(location = 1) in vec2 TexCoord;
|
||||
layout(location = 0) out vec2 vTexCoord;
|
||||
|
||||
void main()
|
||||
{
|
||||
gl_Position = global.MVP * Position;
|
||||
vTexCoord = TexCoord;
|
||||
}
|
||||
|
||||
#pragma stage fragment
|
||||
layout(location = 0) in vec2 vTexCoord;
|
||||
layout(location = 0) out vec4 FragColor;
|
||||
layout(set = 0, binding = 2) uniform sampler2D Source;
|
||||
layout(set = 0, binding = 3) uniform sampler2D Original;
|
||||
|
||||
#define iResolution params.SourceSize
|
||||
#define iChannel0 Source
|
||||
#define iChannel1 Source
|
||||
#define vFragCoord vec2(vTexCoord.xy * params.OutputSize.xy)
|
||||
#define iGlobalTime float(params.FrameCount)
|
||||
|
||||
// Temporal Anti-aliasing Pass
|
||||
|
||||
#define ENABLE_TAA
|
||||
|
||||
///////////////////////////
|
||||
// Hash Functions
|
||||
///////////////////////////
|
||||
|
||||
// From: Hash without Sine by Dave Hoskins
|
||||
// https://www.shadertoy.com/view/4djSRW
|
||||
|
||||
// *** Use this for integer stepped ranges, ie Value-Noise/Perlin noise functions.
|
||||
//#define HASHSCALE1 .1031
|
||||
//#define HASHSCALE3 vec3(.1031, .1030, .0973)
|
||||
//#define HASHSCALE4 vec4(1031, .1030, .0973, .1099)
|
||||
|
||||
// For smaller input rangers like audio tick or 0-1 UVs use these...
|
||||
#define HASHSCALE1 443.8975
|
||||
#define HASHSCALE3 vec3(443.897, 441.423, 437.195)
|
||||
#define HASHSCALE4 vec3(443.897, 441.423, 437.195, 444.129)
|
||||
|
||||
|
||||
//----------------------------------------------------------------------------------------
|
||||
// 2 out, 1 in...
|
||||
vec2 hash21(float p)
|
||||
{
|
||||
vec3 p3 = fract(vec3(p) * HASHSCALE3);
|
||||
p3 += dot(p3, p3.yzx + 19.19);
|
||||
return fract((p3.xx+p3.yz)*p3.zy);
|
||||
|
||||
}
|
||||
|
||||
/// 2 out, 3 in...
|
||||
vec2 hash23(vec3 p3)
|
||||
{
|
||||
p3 = fract(p3 * HASHSCALE3);
|
||||
p3 += dot(p3, p3.yzx+19.19);
|
||||
return fract((p3.xx+p3.yz)*p3.zy);
|
||||
}
|
||||
|
||||
// 1 out, 3 in...
|
||||
float hash13(vec3 p3)
|
||||
{
|
||||
p3 = fract(p3 * HASHSCALE1);
|
||||
p3 += dot(p3, p3.yzx + 19.19);
|
||||
return fract((p3.x + p3.y) * p3.z);
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////
|
||||
// Data Storage
|
||||
///////////////////////////
|
||||
|
||||
vec4 LoadVec4( sampler2D tex, in ivec2 vAddr )
|
||||
{
|
||||
return texelFetch( tex, vAddr, 0 );
|
||||
}
|
||||
|
||||
vec3 LoadVec3( sampler2D tex, in ivec2 vAddr )
|
||||
{
|
||||
return LoadVec4( tex, vAddr ).xyz;
|
||||
}
|
||||
|
||||
bool AtAddress( ivec2 p, ivec2 c ) { return all( equal( p, c ) ); }
|
||||
|
||||
void StoreVec4( in ivec2 vAddr, in vec4 vValue, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
fragColor = AtAddress( fragCoord, vAddr ) ? vValue : fragColor;
|
||||
}
|
||||
|
||||
void StoreVec3( in ivec2 vAddr, in vec3 vValue, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
StoreVec4( vAddr, vec4( vValue, 0.0 ), fragColor, fragCoord);
|
||||
}
|
||||
|
||||
///////////////////////////
|
||||
// Camera
|
||||
///////////////////////////
|
||||
|
||||
struct CameraState
|
||||
{
|
||||
vec3 vPos;
|
||||
vec3 vTarget;
|
||||
float fFov;
|
||||
vec2 vJitter;
|
||||
float fPlaneInFocus;
|
||||
};
|
||||
|
||||
void Cam_LoadState( out CameraState cam, sampler2D tex, ivec2 addr )
|
||||
{
|
||||
vec4 vPos = LoadVec4( tex, addr + ivec2(0,0) );
|
||||
cam.vPos = vPos.xyz;
|
||||
vec4 targetFov = LoadVec4( tex, addr + ivec2(1,0) );
|
||||
cam.vTarget = targetFov.xyz;
|
||||
cam.fFov = targetFov.w;
|
||||
vec4 jitterDof = LoadVec4( tex, addr + ivec2(2,0) );
|
||||
cam.vJitter = jitterDof.xy;
|
||||
cam.fPlaneInFocus = jitterDof.z;
|
||||
}
|
||||
|
||||
void Cam_StoreState( ivec2 addr, const in CameraState cam, inout vec4 fragColor, in ivec2 fragCoord )
|
||||
{
|
||||
StoreVec4( addr + ivec2(0,0), vec4( cam.vPos, 0 ), fragColor, fragCoord );
|
||||
StoreVec4( addr + ivec2(1,0), vec4( cam.vTarget, cam.fFov ), fragColor, fragCoord );
|
||||
StoreVec4( addr + ivec2(2,0), vec4( cam.vJitter, cam.fPlaneInFocus, 0 ), fragColor, fragCoord );
|
||||
}
|
||||
|
||||
mat3 Cam_GetWorldToCameraRotMatrix( const CameraState cameraState )
|
||||
{
|
||||
vec3 vForward = normalize( cameraState.vTarget - cameraState.vPos );
|
||||
vec3 vRight = normalize( cross(vec3(0, 1, 0), vForward) );
|
||||
vec3 vUp = normalize( cross(vForward, vRight) );
|
||||
|
||||
return mat3( vRight, vUp, vForward );
|
||||
}
|
||||
|
||||
vec2 Cam_GetViewCoordFromUV( const in vec2 vUV )
|
||||
{
|
||||
vec2 vWindow = vUV * 2.0 - 1.0;
|
||||
vWindow.x *= iResolution.x / iResolution.y;
|
||||
|
||||
return vWindow;
|
||||
}
|
||||
|
||||
void Cam_GetCameraRay( const vec2 vUV, const CameraState cam, out vec3 vRayOrigin, out vec3 vRayDir )
|
||||
{
|
||||
vec2 vView = Cam_GetViewCoordFromUV( vUV );
|
||||
vRayOrigin = cam.vPos;
|
||||
float fPerspDist = 1.0 / tan( radians( cam.fFov ) );
|
||||
vRayDir = normalize( Cam_GetWorldToCameraRotMatrix( cam ) * vec3( vView, fPerspDist ) );
|
||||
}
|
||||
|
||||
vec2 Cam_GetUVFromWindowCoord( const in vec2 vWindow )
|
||||
{
|
||||
vec2 vScaledWindow = vWindow;
|
||||
vScaledWindow.x *= iResolution.y / iResolution.x;
|
||||
|
||||
return (vScaledWindow * 0.5 + 0.5);
|
||||
}
|
||||
|
||||
vec2 Cam_WorldToWindowCoord(const in vec3 vWorldPos, const in CameraState cameraState )
|
||||
{
|
||||
vec3 vOffset = vWorldPos - cameraState.vPos;
|
||||
vec3 vCameraLocal;
|
||||
|
||||
vCameraLocal = vOffset * Cam_GetWorldToCameraRotMatrix( cameraState );
|
||||
|
||||
vec2 vWindowPos = vCameraLocal.xy / (vCameraLocal.z * tan( radians( cameraState.fFov ) ));
|
||||
|
||||
return vWindowPos;
|
||||
}
|
||||
|
||||
float EncodeDepthAndObject( float depth, int objectId )
|
||||
{
|
||||
//depth = max( 0.0, depth );
|
||||
//objectId = max( 0, objectId + 1 );
|
||||
//return exp2(-depth) + float(objectId);
|
||||
return depth;
|
||||
}
|
||||
|
||||
float DecodeDepthAndObjectId( float value, out int objectId )
|
||||
{
|
||||
objectId = 0;
|
||||
return max(0.0, value);
|
||||
//objectId = int( floor( value ) ) - 1;
|
||||
//return abs( -log2(fract(value)) );
|
||||
}
|
||||
|
||||
///////////////////////////////
|
||||
|
||||
|
||||
#define iChannelCurr iChannel0
|
||||
#define iChannelHistory iChannel1
|
||||
|
||||
vec3 Tonemap( vec3 x )
|
||||
{
|
||||
float a = 0.010;
|
||||
float b = 0.132;
|
||||
float c = 0.010;
|
||||
float d = 0.163;
|
||||
float e = 0.101;
|
||||
|
||||
return ( x * ( a * x + b ) ) / ( x * ( c * x + d ) + e );
|
||||
}
|
||||
|
||||
vec3 TAA_ColorSpace( vec3 color )
|
||||
{
|
||||
return Tonemap(color);
|
||||
}
|
||||
|
||||
void main()
|
||||
{
|
||||
CameraState camCurr;
|
||||
Cam_LoadState( camCurr, iChannelCurr, ivec2(0) );
|
||||
|
||||
CameraState camPrev;
|
||||
Cam_LoadState( camPrev, iChannelHistory, ivec2(0) );
|
||||
|
||||
vec2 vUV = vFragCoord.xy / iResolution.xy;
|
||||
vec2 vUnJitterUV = vUV - camCurr.vJitter / iResolution.xy;
|
||||
|
||||
FragColor = textureLod(iChannelCurr, vUnJitterUV, 0.0);
|
||||
|
||||
|
||||
#ifdef ENABLE_TAA
|
||||
vec3 vRayOrigin, vRayDir;
|
||||
Cam_GetCameraRay( vUV, camCurr, vRayOrigin, vRayDir );
|
||||
float fDepth;
|
||||
int iObjectId;
|
||||
vec4 vCurrTexel = texelFetch( iChannelCurr, ivec2(vFragCoord.xy), 0);
|
||||
fDepth = DecodeDepthAndObjectId( vCurrTexel.w, iObjectId );
|
||||
vec3 vWorldPos = vRayOrigin + vRayDir * fDepth;
|
||||
|
||||
vec2 vPrevUV = Cam_GetUVFromWindowCoord( Cam_WorldToWindowCoord(vWorldPos, camPrev) );// + camPrev.vJitter / iResolution.xy;
|
||||
|
||||
if ( all( greaterThanEqual( vPrevUV, vec2(0) )) && all( lessThan( vPrevUV, vec2(1) )) )
|
||||
{
|
||||
vec3 vMin = vec3( 10000);
|
||||
vec3 vMax = vec3(-10000);
|
||||
|
||||
ivec2 vCurrXY = ivec2(floor(vFragCoord.xy));
|
||||
|
||||
int iNeighborhoodSize = 1;
|
||||
for ( int iy=-iNeighborhoodSize; iy<=iNeighborhoodSize; iy++)
|
||||
{
|
||||
for ( int ix=-iNeighborhoodSize; ix<=iNeighborhoodSize; ix++)
|
||||
{
|
||||
ivec2 iOffset = ivec2(ix, iy);
|
||||
vec3 vTest = TAA_ColorSpace( texelFetch( iChannelCurr, vCurrXY + iOffset, 0 ).rgb );
|
||||
|
||||
vMin = min( vMin, vTest );
|
||||
vMax = max( vMax, vTest );
|
||||
}
|
||||
}
|
||||
|
||||
float epsilon = 0.001;
|
||||
vMin -= epsilon;
|
||||
vMax += epsilon;
|
||||
|
||||
float fBlend = 0.0f;
|
||||
|
||||
//ivec2 vPrevXY = ivec2(floor(vPrevUV.xy * iResolution.xy));
|
||||
vec4 vHistory = textureLod( iChannelHistory, vPrevUV, 0.0 );
|
||||
|
||||
vec3 vPrevTest = TAA_ColorSpace( vHistory.rgb );
|
||||
if( all( greaterThanEqual(vPrevTest, vMin ) ) && all( lessThanEqual( vPrevTest, vMax ) ) )
|
||||
{
|
||||
fBlend = 0.9;
|
||||
//FragColor.r *= 0.0;
|
||||
}
|
||||
|
||||
FragColor.rgb = mix( FragColor.rgb, vHistory.rgb, fBlend);
|
||||
}
|
||||
else
|
||||
{
|
||||
//FragColor.gb *= 0.0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
FragColor.rgb += (hash13( vec3( vFragCoord, iGlobalTime ) ) * 2.0 - 1.0) * 0.03;
|
||||
|
||||
Cam_StoreState( ivec2(0), camCurr, FragColor, ivec2(vFragCoord.xy) );
|
||||
Cam_StoreState( ivec2(3,0), camPrev, FragColor, ivec2(vFragCoord.xy) );
|
||||
}
|
Loading…
Reference in a new issue