67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// Image Border shader by hunterk
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// license: public domain
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layout(push_constant) uniform Push
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{
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vec4 OutputSize;
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vec4 OriginalSize;
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vec4 SourceSize;
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uint FrameCount;
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float box_scale;
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float location_x;
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float location_y;
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float in_res_x;
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float in_res_y;
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float border_on_top;
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float border_zoom_x;
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float border_zoom_y;
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float OS_MASK_TOP;
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float OS_MASK_BOTTOM;
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float OS_MASK_LEFT;
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float OS_MASK_RIGHT;
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} params;
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#pragma parameter OS_MASK_TOP "OS Mask Top" 0.0 0.0 1.0 0.01
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#pragma parameter OS_MASK_BOTTOM "OS Mask Bottom" 0.0 0.0 1.0 0.01
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#pragma parameter OS_MASK_LEFT "OS Mask Left" 0.0 0.0 1.0 0.01
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#pragma parameter OS_MASK_RIGHT "OS Mask Right" 0.0 0.0 1.0 0.01
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layout(std140, set = 0, binding = 0) uniform UBO
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{
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mat4 MVP;
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} global;
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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layout(location = 1) in vec2 TexCoord;
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layout(location = 0) out vec2 vTexCoord;
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layout(location = 1) out vec2 screen_coord;
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void main()
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{
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gl_Position = global.MVP * Position;
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vec2 corrected_size = vec2(params.in_res_x, params.in_res_y);
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vec2 scale = (params.OutputSize.xy / corrected_size) / params.box_scale;
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vec2 middle = vec2(params.location_x, params.location_y);
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vec2 diff = TexCoord.xy - middle;
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screen_coord = middle + diff * scale;
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middle = vec2(0.4999, 0.4999);
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vTexCoord = middle + diff * vec2(params.border_zoom_x, params.border_zoom_y);
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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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layout(location = 1) in vec2 screen_coord;
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layout(location = 0) out vec4 FragColor;
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layout(set = 0, binding = 2) uniform sampler2D Source;
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layout(set = 0, binding = 3) uniform sampler2D Original;
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layout(set = 0, binding = 4) uniform sampler2D BORDER;
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void main()
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{
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vec4 screen = texture(Source, screen_coord); //the main video screen
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vec4 background = vec4(texture(BORDER, vTexCoord)); //put your background function's output here
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if ( screen_coord.x < 0.9999 - params.OS_MASK_RIGHT && screen_coord.x > 0.0001 + params.OS_MASK_LEFT && screen_coord.y < 0.9999 - params.OS_MASK_BOTTOM && screen_coord.y > 0.0001 + params.OS_MASK_TOP && params.border_on_top > 0.5 )
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background.a *= 0.0;
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FragColor = vec4(mix(screen, background, background.a));
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} |