diff --git a/auto-box/box-center.slang b/auto-box/box-center.slang new file mode 100644 index 00000000..a79f3238 --- /dev/null +++ b/auto-box/box-center.slang @@ -0,0 +1,44 @@ +#version 450 + +/* + Box Center Shader + Centers pre-scaled output into the viewport, to prevent unintentional non-integer scaling. Maintains 1x scale of the input. + Author: Themaister + License: Public domain +*/ + +layout(std140, set = 0, binding = 0) uniform UBO +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + 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; + + vec2 box_scale = vec2(1.0); + + vec2 scale = (global.OutputSize.xy / global.SourceSize.xy) / box_scale; + vec2 middle = vec2(0.5); + vec2 diff = TexCoord - middle; + vTexCoord = middle + diff * scale; +} + +#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(texture(Source, vTexCoord).rgb, 1.0); +} \ No newline at end of file diff --git a/auto-box/box-max.slang b/auto-box/box-max.slang new file mode 100644 index 00000000..7ac32906 --- /dev/null +++ b/auto-box/box-max.slang @@ -0,0 +1,54 @@ +#version 450 + +/* + Box Max Shader + Automatically scales output to the maximum integer scale possible. + Author: Themaister + License: Public domain +*/ + +layout(std140, set = 0, binding = 0) uniform UBO +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + mat4 MVP; +} global; + +#pragma stage vertex +layout(location = 0) in vec4 Position; +layout(location = 1) in vec2 TexCoord; +layout(location = 0) out vec2 vTexCoord; + + +float min(vec2 x) +{ + if (x.x > x.y) + return x.y; + else + return x.x; +} + +void main() +{ + gl_Position = global.MVP * Position; + + vec2 box_scale = floor(global.OutputSize.xy / global.SourceSize.xy); + box_scale = vec2(min(box_scale), min(box_scale)); + + vec2 scale = (global.OutputSize.xy / global.SourceSize.xy) / box_scale; + vec2 middle = vec2(0.5); + vec2 diff = TexCoord - middle; + vTexCoord = middle + diff * scale; +} + +#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(texture(Source, vTexCoord).rgb, 1.0); +} \ No newline at end of file diff --git a/auto-box/box.slang b/auto-box/box.slang new file mode 100644 index 00000000..939be8dc --- /dev/null +++ b/auto-box/box.slang @@ -0,0 +1,50 @@ +#version 450 + +/* + Box Shader + Scales output according to the scale factor parameters. + Author: Themaister + License: Public domain +*/ + + +layout(std140, set = 0, binding = 0) uniform UBO +{ + vec4 SourceSize; + vec4 OriginalSize; + vec4 OutputSize; + uint FrameCount; + mat4 MVP; + float x_scale; + float y_scale; +} global; + +#pragma parameter x_scale "X Scale" 3.0 1.0 100.0 1.0 +#pragma parameter y_scale "Y Scale" 3.0 1.0 100.0 1.0 + +#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; + + vec2 box_scale = vec2(global.x_scale, global.y_scale); + + vec2 scale = (global.OutputSize.xy / global.SourceSize.xy) / box_scale; + vec2 middle = vec2(0.5); + vec2 diff = TexCoord - middle; + vTexCoord = middle + diff * scale; +} + +#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(texture(Source, vTexCoord).rgb, 1.0); +} \ No newline at end of file