diff --git a/dithering/sgenpt-mix-multipass.slangp b/dithering/sgenpt-mix-multipass.slangp new file mode 100644 index 0000000..e2acd9f --- /dev/null +++ b/dithering/sgenpt-mix-multipass.slangp @@ -0,0 +1,33 @@ +shaders = 6 + +shader0 = shaders/sgenpt-mix/linearize.slang +filter_linear0 = false +scale_type0 = source +scale0 = 1.0 +alias0 = LinearGamma + +shader1 = shaders/sgenpt-mix/sgenpt-mix-pass1.slang +filter_linear1 = false +scale_type1 = source +scale1 = 1.0 + +shader2 = shaders/sgenpt-mix/sgenpt-mix-pass2.slang +filter_linear2 = false +scale_type2 = source +scale2 = 1.0 + +shader3 = shaders/sgenpt-mix/sgenpt-mix-pass3.slang +filter_linear3 = false +scale_type3 = source +scale3 = 1.0 +alias3 = CB_Output + +shader4 = shaders/sgenpt-mix/sgenpt-mix-pass4.slang +filter_linear4 = false +scale_type4 = source +scale4 = 1.0 + + +shader5 = shaders/sgenpt-mix/sgenpt-mix-pass5.slang +filter_linear5 = false + diff --git a/dithering/shaders/sgenpt-mix/linearize.slang b/dithering/shaders/sgenpt-mix/linearize.slang new file mode 100644 index 0000000..4ae1005 --- /dev/null +++ b/dithering/shaders/sgenpt-mix/linearize.slang @@ -0,0 +1,45 @@ +#version 450 + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float SGPT_BLEND_OPTION; + float UseGamma; +} params; + +#pragma parameter SGPT_BLEND_OPTION "SGENPT-MIX: [ OFF | CB | VL | BOTH ]" 3.0 0.0 3.0 1.0 +#pragma parameter UseGamma " Gamma Slider" 1.0 0.0 1.0 0.1 + +#define UseGamma params.UseGamma +#define LinInputGamma (UseGamma+1.0) + +#define GAMMA_IN(color) pow(color, vec3(LinInputGamma, LinInputGamma, LinInputGamma)) + +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; + +void main() +{ + FragColor = vec4(GAMMA_IN(texture(Source, vTexCoord).rgb), 1.0); +} diff --git a/dithering/shaders/sgenpt-mix/sgenpt-mix-pass1.slang b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass1.slang new file mode 100644 index 0000000..93be389 --- /dev/null +++ b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass1.slang @@ -0,0 +1,107 @@ +#version 450 + +/* + Sgenpt-Mix - pass1 + + 2011-2022 Hyllian - sergiogdb@gmail.com + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float SGPT_BLEND_OPTION; + float CB_BLEND_LEVEL; +} params; + +#pragma parameter SGPT_BLEND_OPTION "SGENPT-MIX: [ OFF | CB | VL | BOTH ]" 3.0 0.0 3.0 1.0 +#pragma parameter CB_BLEND_LEVEL " Checkerboard Blend Level" 1.0 0.0 1.0 0.1 + +#define SGPT_BLEND_OPTION params.SGPT_BLEND_OPTION +#define CB_BLEND_LEVEL params.CB_BLEND_LEVEL + +const vec3 Y = vec3( 0.299, 0.587, 0.114); + +vec3 min_s(vec3 central, vec3 adj1, vec3 adj2) {return min(central, max(adj1, adj2));} +vec3 max_s(vec3 central, vec3 adj1, vec3 adj2) {return max(central, min(adj1, adj2));} + +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; + +void main() +{ + vec2 dx = vec2(1.0, 0.0)*params.SourceSize.zw; + vec2 dy = vec2(0.0, 1.0)*params.SourceSize.zw; + + // Reading the texels. + vec3 C = texture(Source, vTexCoord ).xyz; + vec3 L = texture(Source, vTexCoord -dx).xyz; + vec3 R = texture(Source, vTexCoord +dx).xyz; + vec3 U = texture(Source, vTexCoord -dy).xyz; + vec3 D = texture(Source, vTexCoord +dy).xyz; + vec3 UL = texture(Source, vTexCoord -dx -dy).xyz; + vec3 UR = texture(Source, vTexCoord +dx -dy).xyz; + vec3 DL = texture(Source, vTexCoord -dx +dy).xyz; + vec3 DR = texture(Source, vTexCoord +dx +dy).xyz; + + vec3 color = C; + + if (SGPT_BLEND_OPTION == 1 || SGPT_BLEND_OPTION == 3) + { + float diff = dot(max(C, max(L, R)) - min(C, min(L, R)), Y); + + diff *= (1.0 - CB_BLEND_LEVEL); + + vec3 min_sample = max(min_s(C, L, R), min_s(C, U, D)); + vec3 max_sample = min(max_s(C, L, R), max_s(C, U, D)); + + color = 0.5*( 1.0 + diff )*C + 0.125*( 1.0 - diff )*(L + R + U + D); + + color = clamp(color, min_sample, max_sample); + } + + float luma_diff = abs(dot(C, Y)-dot(color, Y)); + + FragColor = vec4(color, luma_diff); +} diff --git a/dithering/shaders/sgenpt-mix/sgenpt-mix-pass2.slang b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass2.slang new file mode 100644 index 0000000..a3034f7 --- /dev/null +++ b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass2.slang @@ -0,0 +1,142 @@ +#version 450 + +/* + Sgenpt-Mix - pass2 + + 2011-2022 Hyllian - sergiogdb@gmail.com + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float CB_BLEND_LEVEL; +} params; + +#pragma parameter CB_BLEND_LEVEL " Checkerboard Blend Level" 1.0 0.0 1.0 0.1 + +#define CB_BLEND_LEVEL params.CB_BLEND_LEVEL + +#define PATTERN(A) step(Delta,A) + +const float Delta = 0.000000001; +const vec3 Y = vec3( 0.299, 0.587, 0.114); + +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 LinearGamma; + +void main() +{ + vec2 dx = vec2(1.0, 0.0)*params.SourceSize.zw; + vec2 dy = vec2(0.0, 1.0)*params.SourceSize.zw; + + // Reading the texels. + vec4 C = texture(Source, vTexCoord ); + vec4 L = texture(Source, vTexCoord -dx ); + vec4 R = texture(Source, vTexCoord +dx ); + vec4 U = texture(Source, vTexCoord -dy); + vec4 D = texture(Source, vTexCoord +dy); + vec4 UL = texture(Source, vTexCoord -dx -dy); + vec4 UR = texture(Source, vTexCoord +dx -dy); + vec4 DL = texture(Source, vTexCoord -dx +dy); + vec4 DR = texture(Source, vTexCoord +dx +dy); + + vec4 L2 = texture(Source, vTexCoord -2.0*dx ); + vec4 R2 = texture(Source, vTexCoord +2.0*dx ); + vec4 U2 = texture(Source, vTexCoord -2.0*dy); + vec4 D2 = texture(Source, vTexCoord +2.0*dy); + + vec4 UL2 = texture(Source, vTexCoord -2.0*dx -dy); + vec4 UR2 = texture(Source, vTexCoord +2.0*dx -dy); + vec4 DL2 = texture(Source, vTexCoord -2.0*dx +dy); + vec4 DR2 = texture(Source, vTexCoord +2.0*dx +dy); + + vec4 LU2 = texture(Source, vTexCoord -dx -2.0*dy); + vec4 RU2 = texture(Source, vTexCoord +dx -2.0*dy); + vec4 LD2 = texture(Source, vTexCoord -dx +2.0*dy); + vec4 RD2 = texture(Source, vTexCoord +dx -2.0*dy); + + vec3 color = C.rgb; + + vec3 oriC = texture(LinearGamma, vTexCoord ).rgb; + vec3 oriL = texture(LinearGamma, vTexCoord -dx ).rgb; + vec3 oriR = texture(LinearGamma, vTexCoord +dx ).rgb; + vec3 oriU = texture(LinearGamma, vTexCoord -dy).rgb; + vec3 oriD = texture(LinearGamma, vTexCoord +dy).rgb; + + float count1 = 0.0; + float count2 = 0.0; + + float diff = (1.0 - CB_BLEND_LEVEL); + +// LU2 U2 RU2 +// UL2 UL U UR UR2 +// L2 L C R R2 +// DL2 DL D DR DR2 +// LD2 D2 RD2 + + count1 += PATTERN(L.a*D.a*R.a); + count1 += PATTERN(L.a*U.a*R.a); + count1 += PATTERN(L.a*UL.a*R.a*UR.a + L.a*DL.a*R.a*DR.a); + + count1 += PATTERN(U.a*D2.a*(UL.a*LD2.a + UR.a*RD2.a) + U2.a*D.a*(LU2.a*DL.a + RU2.a*DR.a)); + + count2 += PATTERN(U.a*L.a*D.a); + count2 += PATTERN(U.a*R.a*D.a); + count2 += PATTERN(U.a*UR.a*D.a*DR.a + D.a*DL.a*U.a*UL.a); + + count2 += PATTERN(L.a*R2.a*(DL.a*DR2.a + UL.a*UR2.a) + L2.a*R.a*(DL2.a*DR.a + UL2.a*UR.a)); + + if ((count1 * count2) > 0.0 && count1 == count2) + color = 0.5*(1.0+diff)*oriC + 0.125*(1.0-diff)*(oriL + oriR + oriU + oriD); + else if (count1 > 0.0 && count1 > count2) + color = 0.5*(1.0+diff)*oriC + 0.25*(1.0-diff)*(oriL + oriR); + else if (count2 > 0.0 && count2 > count1) + color = 0.5*(1.0+diff)*oriC + 0.25*(1.0-diff)*(oriU + oriD); + + float luma_diff = abs(dot(oriC, Y)-dot(color, Y)); + + FragColor = vec4(color, luma_diff); +} diff --git a/dithering/shaders/sgenpt-mix/sgenpt-mix-pass3.slang b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass3.slang new file mode 100644 index 0000000..01b3d41 --- /dev/null +++ b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass3.slang @@ -0,0 +1,152 @@ +#version 450 + +/* + Sgenpt-Mix - pass3 + + 2011-2022 Hyllian - sergiogdb@gmail.com + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float CB_MITIG_NEIGHBRS; + float CB_MITIG_LINES; + float CB_ADJUST_VIEW; + float UseGamma; +} params; + +#pragma parameter CB_MITIG_NEIGHBRS " CB - Mitigate Errors (neighbors)" 1.0 0.0 4.0 1.0 +#pragma parameter CB_MITIG_LINES " CB - Mitigate Errors (regions)" 1.0 0.0 1.0 1.0 +#pragma parameter CB_ADJUST_VIEW " CB - Adjust View" 0.0 0.0 1.0 1.0 +#pragma parameter UseGamma " Gamma Slider" 1.0 0.0 1.0 0.1 + +#define CB_MITIG_NEIGHBRS params.CB_MITIG_NEIGHBRS +#define CB_MITIG_LINES params.CB_MITIG_LINES +#define CB_ADJUST_VIEW params.CB_ADJUST_VIEW +#define UseGamma params.UseGamma +#define CBDOuputGamma (UseGamma+1.0) + +#define GAMMA_OUT(color) pow(color, vec3(1.0 / CBDOuputGamma, 1.0 / CBDOuputGamma, 1.0 / CBDOuputGamma)) + +#define PATTERN(A) step(Delta,A) + +const float Delta = 0.000000001; +const vec3 Y = vec3( 0.299, 0.587, 0.114); + +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 LinearGamma; + +void main() +{ + vec2 dx = vec2(1.0, 0.0)*params.SourceSize.zw; + vec2 dy = vec2(0.0, 1.0)*params.SourceSize.zw; + + // Reading the texels. + vec4 C = texture(Source, vTexCoord ); + vec4 L = texture(Source, vTexCoord -dx ); + vec4 R = texture(Source, vTexCoord +dx ); + vec4 U = texture(Source, vTexCoord -dy); + vec4 D = texture(Source, vTexCoord +dy); + vec4 UL = texture(Source, vTexCoord -dx -dy); + vec4 UR = texture(Source, vTexCoord +dx -dy); + vec4 DL = texture(Source, vTexCoord -dx +dy); + vec4 DR = texture(Source, vTexCoord +dx +dy); + + vec4 L2 = texture(Source, vTexCoord -2.0*dx ); + vec4 R2 = texture(Source, vTexCoord +2.0*dx ); + vec4 U2 = texture(Source, vTexCoord -2.0*dy); + vec4 D2 = texture(Source, vTexCoord +2.0*dy); + + vec4 L3 = texture(Source, vTexCoord -3.0*dx ); + vec4 R3 = texture(Source, vTexCoord +3.0*dx ); + vec4 U3 = texture(Source, vTexCoord -3.0*dy); + vec4 D3 = texture(Source, vTexCoord +3.0*dy); + + vec3 color = C.rgb; + + vec3 oriC = texture(LinearGamma, vTexCoord ).rgb; + + float count = 0.0; + float count2 = 0.0; + float count3 = 0.0; + +// U3 +// U2 +// UL U UR +// L3 L2 L C R R2 R3 +// DL D DR +// D2 +// D3 + + count += PATTERN(L.a); + count += PATTERN(R.a); + count += PATTERN(U.a); + count += PATTERN(D.a); + count += PATTERN(UL.a*UR.a*DL.a*DR.a); + + count2 += PATTERN(L.a*UL.a*U.a + U.a*UR.a*R.a + R.a*DR.a*D.a + D.a*DL.a*L.a); + + count3 += PATTERN(L3.a*L2.a*L.a); + count3 += PATTERN(L2.a*L.a*R.a); + count3 += PATTERN(L.a*R.a*R2.a); + count3 += PATTERN(R.a*R2.a*R3.a); + + count3 += PATTERN(U3.a*U2.a*U.a); + count3 += PATTERN(U2.a*U.a*D.a); + count3 += PATTERN(U.a*D.a*D2.a); + count3 += PATTERN(D.a*D2.a*D3.a); + + if ((count < CB_MITIG_NEIGHBRS) && (count2 < 1.0)) + color = oriC; + else if ((CB_MITIG_LINES == 1.0) && (count3 < 1.0)) + color = oriC; + + float luma_diff = abs(dot(oriC, Y)-dot(color, Y)); + + color = mix(color, vec3(luma_diff), CB_ADJUST_VIEW); + + FragColor = vec4(color, 1.0); +} diff --git a/dithering/shaders/sgenpt-mix/sgenpt-mix-pass4.slang b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass4.slang new file mode 100644 index 0000000..2690dc2 --- /dev/null +++ b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass4.slang @@ -0,0 +1,107 @@ +#version 450 + +/* + Sgenpt-Mix - pass4 + + 2011-2022 Hyllian - sergiogdb@gmail.com + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float SGPT_BLEND_OPTION; + float VL_BLEND_LEVEL; +} params; + +#pragma parameter SGPT_BLEND_OPTION "SGENPT-MIX: [ OFF | CB | VL | BOTH ]" 3.0 0.0 3.0 1.0 +#pragma parameter VL_BLEND_LEVEL " Vertical Lines Blend Level" 0.8 0.0 1.0 0.1 + +#define SGPT_BLEND_OPTION params.SGPT_BLEND_OPTION +#define VL_BLEND_LEVEL params.VL_BLEND_LEVEL + +const vec3 Y = vec3( 0.299, 0.587, 0.114); + +vec3 min_s(vec3 central, vec3 adj1, vec3 adj2) {return min(central, max(adj1, adj2));} +vec3 max_s(vec3 central, vec3 adj1, vec3 adj2) {return max(central, min(adj1, adj2));} + +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; + +void main() +{ + vec2 dx = vec2(1.0, 0.0)*params.SourceSize.zw; + vec2 dy = vec2(0.0, 1.0)*params.SourceSize.zw; + + // Reading the texels. + vec3 C = texture(Source, vTexCoord ).xyz; + vec3 L = texture(Source, vTexCoord -dx).xyz; + vec3 R = texture(Source, vTexCoord +dx).xyz; + vec3 U = texture(Source, vTexCoord -dy).xyz; + vec3 D = texture(Source, vTexCoord +dy).xyz; + vec3 UL = texture(Source, vTexCoord -dx -dy).xyz; + vec3 UR = texture(Source, vTexCoord +dx -dy).xyz; + vec3 DL = texture(Source, vTexCoord -dx +dy).xyz; + vec3 DR = texture(Source, vTexCoord +dx +dy).xyz; + + vec3 color = C; + + if (SGPT_BLEND_OPTION == 2 || SGPT_BLEND_OPTION == 3) + { + float diff = dot(max(C, max(L, R)) - min(C, min(L, R)), Y); + + diff *= (1.0 - VL_BLEND_LEVEL); + + vec3 min_sample = max_s(min_s(C, L, R), min_s(C, DL, DR), min_s(C, UL, UR)); + vec3 max_sample = min_s(max_s(C, L, R), max_s(C, DL, DR), max_s(C, UL, UR)); + + color = 0.5*( 1.0 + diff )*C + 0.25*( 1.0 - diff )*(L + R); + + color = clamp(color, min_sample, max_sample); + } + + float luma_diff = abs(dot(C, Y)-dot(color, Y)); + + FragColor = vec4(color, luma_diff); +} diff --git a/dithering/shaders/sgenpt-mix/sgenpt-mix-pass5.slang b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass5.slang new file mode 100644 index 0000000..5f929ab --- /dev/null +++ b/dithering/shaders/sgenpt-mix/sgenpt-mix-pass5.slang @@ -0,0 +1,152 @@ +#version 450 + +/* + Sgenpt-Mix - pass5 + + 2011-2022 Hyllian - sergiogdb@gmail.com + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. + +*/ + + +layout(push_constant) uniform Push +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + float VL_MITIG_NEIGHBRS; + float VL_MITIG_LINES; + float VL_ADJUST_VIEW; + float UseGamma; +} params; + +#pragma parameter VL_MITIG_NEIGHBRS " VL - Mitigate Errors (neighbors)" 1.0 0.0 4.0 1.0 +#pragma parameter VL_MITIG_LINES " VL - Mitigate Errors (regions)" 1.0 0.0 1.0 1.0 +#pragma parameter VL_ADJUST_VIEW " VL - Adjust View" 0.0 0.0 1.0 1.0 +#pragma parameter UseGamma " Gamma Slider" 1.0 0.0 1.0 0.1 + +#define VL_MITIG_NEIGHBRS params.VL_MITIG_NEIGHBRS +#define VL_MITIG_LINES params.VL_MITIG_LINES +#define VL_ADJUST_VIEW params.VL_ADJUST_VIEW +#define UseGamma params.UseGamma +#define CBDOuputGamma (UseGamma+1.0) + +#define GAMMA_OUT(color) pow(color, vec3(1.0 / CBDOuputGamma, 1.0 / CBDOuputGamma, 1.0 / CBDOuputGamma)) + +#define PATTERN(A) step(Delta,A) + +const float Delta = 0.000000001; +const vec3 Y = vec3( 0.299, 0.587, 0.114); + +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 CB_Output; + +void main() +{ + vec2 dx = vec2(1.0, 0.0)*params.SourceSize.zw; + vec2 dy = vec2(0.0, 1.0)*params.SourceSize.zw; + + // Reading the texels. + vec4 C = texture(Source, vTexCoord ); + vec4 L = texture(Source, vTexCoord -dx ); + vec4 R = texture(Source, vTexCoord +dx ); + vec4 U = texture(Source, vTexCoord -dy); + vec4 D = texture(Source, vTexCoord +dy); + vec4 UL = texture(Source, vTexCoord -dx -dy); + vec4 UR = texture(Source, vTexCoord +dx -dy); + vec4 DL = texture(Source, vTexCoord -dx +dy); + vec4 DR = texture(Source, vTexCoord +dx +dy); + + vec4 L2 = texture(Source, vTexCoord -2.0*dx ); + vec4 R2 = texture(Source, vTexCoord +2.0*dx ); + vec4 U2 = texture(Source, vTexCoord -2.0*dy); + vec4 D2 = texture(Source, vTexCoord +2.0*dy); + + vec4 L3 = texture(Source, vTexCoord -3.0*dx ); + vec4 R3 = texture(Source, vTexCoord +3.0*dx ); + vec4 U3 = texture(Source, vTexCoord -3.0*dy); + vec4 D3 = texture(Source, vTexCoord +3.0*dy); + + vec3 color = C.rgb; + + vec3 oriC = texture(CB_Output, vTexCoord ).rgb; + + float count = 0.0; + float count2 = 0.0; + float count3 = 0.0; + float count4 = 0.0; + +// U3 +// U2 +// UL U UR +// L3 L2 L C R R2 R3 +// DL D DR +// D2 +// D3 + + count += PATTERN(L.a); + count += PATTERN(R.a); + count += PATTERN(U.a); + count += PATTERN(D.a); + + count += PATTERN(UL.a*UR.a*DL.a*DR.a); + + count2 += PATTERN(L.a*UL.a*U.a + U.a*UR.a*R.a + R.a*DR.a*D.a + D.a*DL.a*L.a); + + count3 += PATTERN(L3.a*L2.a*L.a); + count3 += PATTERN(L2.a*L.a*R.a); + count3 += PATTERN(L.a*R.a*R2.a); + count3 += PATTERN(R.a*R2.a*R3.a); + + count4 += PATTERN(U.a); + count4 += PATTERN(D.a); + + if ((count < VL_MITIG_NEIGHBRS) && (count2 < 1.0)) + color = oriC; + else if ((VL_MITIG_LINES == 1.0) && ((count3*count4) < 1.0)) + color = oriC; + + float luma_diff = abs(dot(oriC, Y)-dot(color, Y)); + + color = mix(color, vec3(luma_diff), VL_ADJUST_VIEW); + + FragColor = vec4(GAMMA_OUT(color), 1.0); +}