mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-11-26 01:11:32 +11:00
Some MAD optimizations.
Style nits: Replaced tabs with spaces, 4-space tabs, 80 char general limit, etc.
This commit is contained in:
Arzed Five
parent
95fce03925
commit
18a6182b0d
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@ -15,11 +15,17 @@ layout(std140, set = 0, binding = 0) uniform UBO
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vec4 OriginalHistorySize7;
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} global;
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//config //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#define baseline_alpha 0.10 //the alpha value of dots in their "off" state, does not affect the border region of the screen - [0, 1]
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#define response_time 0.333 //simulate response time, higher values result in longer color transition periods - [0, 1]
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////////////////////////////////////////////////////////////////////////////////
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// Config //
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////////////////////////////////////////////////////////////////////////////////
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// The alpha value of dots in their "off" state
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// Does not affect the border region of the screen - [0, 1]
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#define baseline_alpha 0.10
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// Simulate response time
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// Higher values result in longer color transition periods - [0, 1]
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#define response_time 0.333
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///////////////////////////////////////////////////////////////////////////
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// //
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@ -42,44 +48,46 @@ layout(std140, set = 0, binding = 0) uniform UBO
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// //
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///////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//vertex shader //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Vertex shader //
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////////////////////////////////////////////////////////////////////////////////
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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 tex;
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layout(location = 2) out vec2 dot_size;
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layout(location = 3) out vec2 one_texel;
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//vertex definitions //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Vertex definitions //
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////////////////////////////////////////////////////////////////////////////////
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#define video_scale floor(global.OutputSize.y / global.SourceSize.y) //largest integer scale of input video that will fit in the current output (y axis would typically be limiting on widescreens)
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#define scaled_video_out (global.SourceSize.xy * vec2(video_scale)) //size of the scaled video
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#define half_pixel (vec2(0.5) / global.OutputSize.xy) //it's... half a pixel
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// Largest integer scale of input video that will fit in the current output (y axis would typically be limiting on widescreens)
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#define video_scale floor(global.OutputSize.y / global.SourceSize.y)
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// Size of the scaled video
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#define scaled_video_out (global.SourceSize.xy * vec2(video_scale))
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//it's... half a pixel
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#define half_pixel (vec2(0.5) / global.OutputSize.xy)
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void main()
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{
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// Remaps position to integer scaled output
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gl_Position = global.MVP * Position / vec4( vec2(global.OutputSize.xy / scaled_video_out), 1.0, 1.0 );
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vTexCoord = TexCoord + half_pixel;
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tex = floor(global.OriginalHistorySize1.xy * vTexCoord);
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tex = (tex + 0.5) * global.OriginalHistorySize1.zw;
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dot_size = 1.0 / global.SourceSize.xy;
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dot_size = global.SourceSize.zw;
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one_texel = 1.0 / (global.SourceSize.xy * video_scale);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//fragment shader //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Fragment shader //
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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 tex;
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layout(location = 2) in vec2 dot_size;
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layout(location = 3) in vec2 one_texel;
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layout(location = 0) out vec4 FragColor;
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@ -92,36 +100,35 @@ layout(set = 0, binding = 7) uniform sampler2D OriginalHistory5;
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layout(set = 0, binding = 8) uniform sampler2D OriginalHistory6;
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layout(set = 0, binding = 9) uniform sampler2D OriginalHistory7;
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//fragment definitions //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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#define foreground_color vec3(0.11, 0.4141, 0.41) //tex2D(COLOR_PALETTE, fixed2(0.75, 0.5)).rgb //hardcoded to look up the foreground color from the right half of the palette image
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//#define rgb_to_alpha(rgb) ( ((rgb.r + rgb.g + rgb.b) / 3.0) + (is_on_dot * vec2(baseline_alpha), 1.0) ) //averages rgb values (allows it to work with color games), modified for contrast and base alpha
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//frame sampling definitions
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// Frame sampling definitions
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#define curr_rgb abs(1.0 - texture(Source, vTexCoord).rgb)
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#define prev0_rgb abs(1.0 - texture(OriginalHistory1, tex).rgb)
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#define prev1_rgb abs(1.0 - texture(OriginalHistory2, tex).rgb)
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#define prev2_rgb abs(1.0 - texture(OriginalHistory3, tex).rgb)
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#define prev3_rgb abs(1.0 - texture(OriginalHistory4, tex).rgb)
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#define prev4_rgb abs(1.0 - texture(OriginalHistory5, tex).rgb)
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#define prev5_rgb abs(1.0 - texture(OriginalHistory6, tex).rgb)
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#define prev6_rgb abs(1.0 - texture(OriginalHistory7, tex).rgb)
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#define prev0_rgb abs(1.0 - texture(OriginalHistory1, vTexCoord).rgb)
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#define prev1_rgb abs(1.0 - texture(OriginalHistory2, vTexCoord).rgb)
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#define prev2_rgb abs(1.0 - texture(OriginalHistory3, vTexCoord).rgb)
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#define prev3_rgb abs(1.0 - texture(OriginalHistory4, vTexCoord).rgb)
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#define prev4_rgb abs(1.0 - texture(OriginalHistory5, vTexCoord).rgb)
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#define prev5_rgb abs(1.0 - texture(OriginalHistory6, vTexCoord).rgb)
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#define prev6_rgb abs(1.0 - texture(OriginalHistory7, vTexCoord).rgb)
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void main()
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{
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//determine if the corrent texel lies on a dot or in the space between dots
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// Determine if the corrent texel lies on a dot or in the space between dots
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float is_on_dot;
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if ( mod(vTexCoord.x, dot_size.x) > one_texel.x && mod(vTexCoord.y, dot_size.y) > one_texel.y )
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{is_on_dot = 1.0;}
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is_on_dot = 1.0;
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else
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{is_on_dot = 0.0;}
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is_on_dot = 0.0;
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//sample color from the current and previous frames, apply response time modifier
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//response time effect implmented through an exponential dropoff algorithm
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// Sample color from the current and previous frames, apply response time modifier
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// Response time effect implmented through an exponential dropoff algorithm
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vec3 input_rgb = curr_rgb;
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input_rgb += (prev0_rgb - input_rgb) * response_time;
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input_rgb += (prev1_rgb - input_rgb) * pow(response_time, 2.0);
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@ -131,14 +138,16 @@ vec3 input_rgb = curr_rgb;
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input_rgb += (prev5_rgb - input_rgb) * pow(response_time, 6.0);
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input_rgb += (prev6_rgb - input_rgb) * pow(response_time, 7.0);
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vec2 rgb_to_alpha = vec2((input_rgb.r + input_rgb.g + input_rgb.b) / 3.0) + (is_on_dot * baseline_alpha);
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float rgb_to_alpha = (input_rgb.r + input_rgb.g + input_rgb.b) / 3.0 + (is_on_dot * baseline_alpha);
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//apply foreground color and assign alpha value
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vec4 out_color = vec4(foreground_color, rgb_to_alpha); //apply the foreground color to all texels (the color will be modified by alpha later) and assign alpha based on rgb input
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// Apply foreground color and assign alpha value
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// Apply the foreground color to all texels -
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// the color will be modified by alpha later - and assign alpha based on rgb input
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vec4 out_color = vec4(foreground_color, rgb_to_alpha);
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//overlay the matrix
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out_color.a *= is_on_dot; //if the fragment is not on a dot, set its alpha value to 0
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// Overlay the matrix
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// If the fragment is not on a dot, set its alpha value to 0
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out_color.a *= is_on_dot;
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//return fragment color
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FragColor = vec4(out_color);
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FragColor = out_color;
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}
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@ -8,11 +8,16 @@ layout(std140, set = 0, binding = 0) uniform UBO
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vec4 SourceSize;
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} global;
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//config //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#define blending_mode 0 //0 - only the space between dots is blending, 1 - all texels are blended
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#define adjacent_texel_alpha_blending 0.1755 //the amount of alpha swapped between neighboring texels
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////////////////////////////////////////////////////////////////////////////////
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// Config //
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////////////////////////////////////////////////////////////////////////////////
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// 0 - only the space between dots is blending
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// 1 - all texels are blended
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#define blending_mode 0
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// The amount of alpha swapped between neighboring texels
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#define adjacent_texel_alpha_blending 0.1755
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///////////////////////////////////////////////////////////////////////////
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// //
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@ -35,9 +40,9 @@ layout(std140, set = 0, binding = 0) uniform UBO
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// //
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///////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//vertex shader //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Vertex shader //
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////////////////////////////////////////////////////////////////////////////////
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#pragma stage vertex
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layout(location = 0) in vec4 Position;
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@ -55,19 +60,19 @@ void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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texel = 1.0 / global.SourceSize.xy;
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blur_coords_up = vTexCoord + vec2(0.0, texel.y);
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blur_coords_down = vTexCoord + vec2(0.0, -texel.y);
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texel = global.SourceSize.zw;
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blur_coords_down = vTexCoord + vec2(0.0, texel.y);
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blur_coords_up = vTexCoord + vec2(0.0, -texel.y);
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blur_coords_right = vTexCoord + vec2(texel.x, 0.0);
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blur_coords_left = vTexCoord + vec2(-texel.x, 0.0);
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blur_coords_lower_bound = vec2(0.0);
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blur_coords_upper_bound = texel * (global.OutputSize.xy - vec2(2.0));
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//fragment shader //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Fragment shader //
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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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@ -81,40 +86,43 @@ layout(location = 7) in vec2 blur_coords_upper_bound;
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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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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//fragment definitions //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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// Fragment definitions //
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////////////////////////////////////////////////////////////////////////////////
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//#define blending_modifier(color) clamp((color.a == 0) + blending_mode, 0.0, 1.0)
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//fragment functions //
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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void main()
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{
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//sample the input textures
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// A simple blur technique that softens harsh color transitions
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// Specialized to only blur alpha values and limited to only blurring texels
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// lying in the spaces between two or more texels
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// Sample the input textures
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vec4 out_color = texture(Source, vTexCoord).rgba;
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//clamp the blur coords to the input texture size so it doesn't attempt to sample off the texture (it'll retrieve float4(0.0) and darken the edges otherwise)
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// Clamp the blur coords to the input texture size so it doesn't attempt to sample off the texture (it'll retrieve float4(0.0) and darken the edges otherwise)
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vec2 blur_coords_up_clamped = clamp(blur_coords_up, blur_coords_lower_bound, blur_coords_upper_bound);
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vec2 blur_coords_down_clamped = clamp(blur_coords_down, blur_coords_lower_bound, blur_coords_upper_bound);
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vec2 blur_coords_right_clamped = clamp(blur_coords_right, blur_coords_lower_bound, blur_coords_upper_bound);
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vec2 blur_coords_left_clamped = clamp(blur_coords_left, blur_coords_lower_bound, blur_coords_upper_bound);
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//sample adjacent texels based on the coordinates above
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//Sample adjacent texels based on the coordinates above
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vec4 adjacent_texel_1 = texture(Source, blur_coords_up_clamped).rgba;
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vec4 adjacent_texel_2 = texture(Source, blur_coords_down_clamped).rgba;
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vec4 adjacent_texel_3 = texture(Source, blur_coords_right_clamped).rgba;
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vec4 adjacent_texel_4 = texture(Source, blur_coords_left_clamped).rgba;
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//sum the alpha differences between neighboring texels, apply modifiers, then subtract the result from the current fragment alpha value
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out_color.a -= ( (out_color.a - adjacent_texel_1.a) +
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// Sum the alpha differences between neighboring texels, apply modifiers, then subtract the result from the current fragment alpha value
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out_color.a -=
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(
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(out_color.a - adjacent_texel_1.a) +
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(out_color.a - adjacent_texel_2.a) +
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(out_color.a - adjacent_texel_3.a) +
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(out_color.a - adjacent_texel_4.a) ) * adjacent_texel_alpha_blending;
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(out_color.a - adjacent_texel_4.a)
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) * adjacent_texel_alpha_blending;
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out_color.a *= clamp((0.0) + blending_mode, 0.0, 1.0);
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//return
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FragColor = vec4(out_color);
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FragColor = out_color;
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}
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@ -41,7 +41,8 @@ void main()
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{
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gl_Position = global.MVP * Position;
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vTexCoord = TexCoord;
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texel = 1.0 / global.SourceSize.xy;
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texel = global.SourceSize.zw;
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lower_bound = vec2(0.0);
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upper_bound = vec2(texel * (global.OutputSize.xy - 1.0));
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}
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@ -54,48 +55,59 @@ layout(location = 3) in vec2 upper_bound;
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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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//sigma = 4.0, normalized for 5 pixel offset sigma = 4.0, normalized for 4 pixel offset
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//Raw Gaussian weights: Raw Gaussian weights:
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// 0.09973561222190091607086808117254 @position0 0.09973561222190091607086808117254 @position0
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// 0.09666707205829167156101677393475 @position1 0.09666707205829167156101677393475 @position1
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// 0.08801637626376240452162358324964 @position2 0.08801637626376240452162358324964 @position2
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// 0.07528440407628116669052257071979 @position3 0.07528440407628116669052257071979 @position3
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// 0.06049272702308815188099267447364 @position4 0.06049272702308815188099267447364 @position4
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// 0.04566231462789672460813692086928 @position5
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//
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//sum [p0 + 2(p1 + p2 + p3 + p4 + p5)]: sum [p0 + 2(p1 + p2 + p3 + p4)]:
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// 0.83198140032054115459545312766674 0.74065677106474770537917928592818
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//
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//Normalizing factor [1 / sum]: Normalizing factor [1 / sum]:
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// 1.2019499469756482251051310195171 1.350153052084338115052273748029
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//
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//Normalized Gaussian weights: Normalized Gaussian weights:
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// 0.11987721382169761913280166382392 @position0 0.13465834124289953661305802732548 @position0
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// 0.11618898213475484076479592086597 @position1 0.13051534237555914090930704141833 @position1
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// 0.10579127878321792515352079488329 @position2 0.11883557904592230273554609080014 @position2
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// 0.09048808548757942339961181362524 @position3 0.10164546793794160274995705611009 @position3
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// 0.07270923003781316665844409497651 @position4 0.08167444001912718529866079800870 @position4
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// 0.05488381664578583445722654373702 @position5
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/*
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sigma = 4.0, normalized for 5 pixel offset sigma = 4.0, normalized for 4 pixel offset
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Raw Gaussian weights: Raw Gaussian weights:
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0.09973561222190091607086808117254 @position0 0.09973561222190091607086808117254 @position0
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0.09666707205829167156101677393475 @position1 0.09666707205829167156101677393475 @position1
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0.08801637626376240452162358324964 @position2 0.08801637626376240452162358324964 @position2
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0.07528440407628116669052257071979 @position3 0.07528440407628116669052257071979 @position3
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0.06049272702308815188099267447364 @position4 0.06049272702308815188099267447364 @position4
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0.04566231462789672460813692086928 @position5
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sum [p0 + 2(p1 + p2 + p3 + p4 + p5)]: sum [p0 + 2(p1 + p2 + p3 + p4)]:
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0.83198140032054115459545312766674 0.74065677106474770537917928592818
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Normalizing factor [1 / sum]: Normalizing factor [1 / sum]:
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1.2019499469756482251051310195171 1.350153052084338115052273748029
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Normalized Gaussian weights: Normalized Gaussian weights:
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0.11987721382169761913280166382392 @position0 0.13465834124289953661305802732548 @position0
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0.11618898213475484076479592086597 @position1 0.13051534237555914090930704141833 @position1
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0.10579127878321792515352079488329 @position2 0.11883557904592230273554609080014 @position2
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0.09048808548757942339961181362524 @position3 0.10164546793794160274995705611009 @position3
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0.07270923003781316665844409497651 @position4 0.08167444001912718529866079800870 @position4
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0.05488381664578583445722654373702 @position5
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*/
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void main()
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{
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//define offsets and weights - change this for both the X and Y passes if you change the sigma value or number of texels sampled
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// Define offsets and weights - change this for both the X and Y passes if you change the sigma value or number of texels sampled
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float offsets[5] = float[](0.0, 1.0, 2.0, 3.0, 4.0);
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float weights[5] = float[]( 0.13465834124289953661305802732548, //precalculated using the Gaussian function:
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0.13051534237555914090930704141833, // G(x) = (1 / sqrt(2 * pi * sigma^2)) * e^(-x^2 / (2 * sigma^2))
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0.11883557904592230273554609080014, //where sigma = 4.0 and x = offset in range [0, 5]
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0.10164546793794160274995705611009, //normalized to 1 to prevent image darkening by multiplying each weight by:
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0.08167444001912718529866079800870 ); // 1 / sum(all weights)
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//sample the current fragment and apply its weight
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vec4 out_color = texture(Source, clamp(vTexCoord.xy, lower_bound.xy, upper_bound.xy)) * weights[0];
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/*
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Precalculated using the Gaussian function:
|
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G(x) = (1 / sqrt(2 * pi * sigma^2)) * e^(-x^2 / (2 * sigma^2))
|
||||
|
||||
//iterate across the offsets in both directions sampling texels and adding their weighted alpha values to the total
|
||||
Where sigma = 4.0 and x = offset in range [0, 5]
|
||||
Normalized to 1 to prevent image darkening by multiplying each weight by:
|
||||
1 / sum(all weights)
|
||||
*/
|
||||
float weights[5] = float[]( 0.13465834124289953661305802732548,
|
||||
0.13051534237555914090930704141833,
|
||||
0.11883557904592230273554609080014,
|
||||
0.10164546793794160274995705611009,
|
||||
0.08167444001912718529866079800870 );
|
||||
|
||||
// Sample the current fragment and apply its weight
|
||||
vec4 out_color = texture(Source, clamp(vTexCoord, lower_bound, upper_bound)) * weights[0];
|
||||
|
||||
// Iterate across the offsets in both directions sampling texels
|
||||
// and adding their weighted alpha values to the total
|
||||
for (int i = 1; i < 5; i++)
|
||||
{
|
||||
out_color.a += texture(Source, clamp(vTexCoord.xy + vec2(offsets[i] * texel.x, 0.0), lower_bound, upper_bound)).a * weights[i];
|
||||
out_color.a += texture(Source, clamp(vTexCoord.xy - vec2(offsets[i] * texel.x, 0.0), lower_bound, upper_bound)).a * weights[i];
|
||||
out_color.a += texture(Source, clamp(vTexCoord + vec2(offsets[i] * texel.x, 0.0), lower_bound, upper_bound)).a * weights[i];
|
||||
out_color.a += texture(Source, clamp(vTexCoord - vec2(offsets[i] * texel.x, 0.0), lower_bound, upper_bound)).a * weights[i];
|
||||
}
|
||||
|
||||
FragColor = vec4(out_color);
|
||||
FragColor = out_color;
|
||||
}
|
||||
|
|
@ -41,7 +41,8 @@ void main()
|
|||
{
|
||||
gl_Position = global.MVP * Position;
|
||||
vTexCoord = TexCoord;
|
||||
texel = 1.0 / global.SourceSize.xy;
|
||||
|
||||
texel = global.SourceSize.zw;
|
||||
lower_bound = vec2(0.0);
|
||||
upper_bound = vec2(texel * (global.OutputSize.xy - 1.0));
|
||||
}
|
||||
|
|
@ -54,47 +55,53 @@ layout(location = 3) in vec2 upper_bound;
|
|||
layout(location = 0) out vec4 FragColor;
|
||||
layout(set = 0, binding = 2) uniform sampler2D Source;
|
||||
|
||||
//sigma = 4.0, normalized for 5 pixel offset sigma = 4.0, normalized for 4 pixel offset
|
||||
//Raw Gaussian weights: Raw Gaussian weights:
|
||||
// 0.09973561222190091607086808117254 @position0 0.09973561222190091607086808117254 @position0
|
||||
// 0.09666707205829167156101677393475 @position1 0.09666707205829167156101677393475 @position1
|
||||
// 0.08801637626376240452162358324964 @position2 0.08801637626376240452162358324964 @position2
|
||||
// 0.07528440407628116669052257071979 @position3 0.07528440407628116669052257071979 @position3
|
||||
// 0.06049272702308815188099267447364 @position4 0.06049272702308815188099267447364 @position4
|
||||
// 0.04566231462789672460813692086928 @position5
|
||||
//
|
||||
//sum [p0 + 2(p1 + p2 + p3 + p4 + p5)]: sum [p0 + 2(p1 + p2 + p3 + p4)]:
|
||||
// 0.83198140032054115459545312766674 0.74065677106474770537917928592818
|
||||
//
|
||||
//Normalizing factor [1 / sum]: Normalizing factor [1 / sum]:
|
||||
// 1.2019499469756482251051310195171 1.350153052084338115052273748029
|
||||
//
|
||||
//Normalized Gaussian weights: Normalized Gaussian weights:
|
||||
// 0.11987721382169761913280166382392 @position0 0.13465834124289953661305802732548 @position0
|
||||
// 0.11618898213475484076479592086597 @position1 0.13051534237555914090930704141833 @position1
|
||||
// 0.10579127878321792515352079488329 @position2 0.11883557904592230273554609080014 @position2
|
||||
// 0.09048808548757942339961181362524 @position3 0.10164546793794160274995705611009 @position3
|
||||
// 0.07270923003781316665844409497651 @position4 0.08167444001912718529866079800870 @position4
|
||||
// 0.05488381664578583445722654373702 @position5
|
||||
/*
|
||||
sigma = 4.0, normalized for 5 pixel offset sigma = 4.0, normalized for 4 pixel offset
|
||||
Raw Gaussian weights: Raw Gaussian weights:
|
||||
0.09973561222190091607086808117254 @position0 0.09973561222190091607086808117254 @position0
|
||||
0.09666707205829167156101677393475 @position1 0.09666707205829167156101677393475 @position1
|
||||
0.08801637626376240452162358324964 @position2 0.08801637626376240452162358324964 @position2
|
||||
0.07528440407628116669052257071979 @position3 0.07528440407628116669052257071979 @position3
|
||||
0.06049272702308815188099267447364 @position4 0.06049272702308815188099267447364 @position4
|
||||
0.04566231462789672460813692086928 @position5
|
||||
|
||||
sum [p0 + 2(p1 + p2 + p3 + p4 + p5)]: sum [p0 + 2(p1 + p2 + p3 + p4)]:
|
||||
0.83198140032054115459545312766674 0.74065677106474770537917928592818
|
||||
|
||||
Normalizing factor [1 / sum]: Normalizing factor [1 / sum]:
|
||||
1.2019499469756482251051310195171 1.350153052084338115052273748029
|
||||
|
||||
Normalized Gaussian weights: Normalized Gaussian weights:
|
||||
0.11987721382169761913280166382392 @position0 0.13465834124289953661305802732548 @position0
|
||||
0.11618898213475484076479592086597 @position1 0.13051534237555914090930704141833 @position1
|
||||
0.10579127878321792515352079488329 @position2 0.11883557904592230273554609080014 @position2
|
||||
0.09048808548757942339961181362524 @position3 0.10164546793794160274995705611009 @position3
|
||||
0.07270923003781316665844409497651 @position4 0.08167444001912718529866079800870 @position4
|
||||
0.05488381664578583445722654373702 @position5
|
||||
*/
|
||||
void main()
|
||||
{
|
||||
//define offsets and weights - change this for both the X and Y passes if you change the sigma value or number of texels sampled
|
||||
// Define offsets and weights - change this for both the X and Y passes if you change the sigma value or number of texels sampled
|
||||
float offsets[5] = float[](0.0, 1.0, 2.0, 3.0, 4.0);
|
||||
float weights[5] = float[]( 0.13465834124289953661305802732548, //precalculated using the Gaussian function:
|
||||
0.13051534237555914090930704141833, // G(x) = (1 / sqrt(2 * pi * sigma^2)) * e^(-x^2 / (2 * sigma^2))
|
||||
0.11883557904592230273554609080014, //where sigma = 4.0 and x = offset in range [0, 5]
|
||||
0.10164546793794160274995705611009, //normalized to 1 to prevent image darkening by multiplying each weight by:
|
||||
0.08167444001912718529866079800870 ); // 1 / sum(all weights)
|
||||
|
||||
/*
|
||||
Precalculated using the Gaussian function:
|
||||
G(x) = (1 / sqrt(2 * pi * sigma^2)) * e^(-x^2 / (2 * sigma^2))
|
||||
|
||||
Where sigma = 4.0 and x = offset in range [0, 5]
|
||||
Normalized to 1 to prevent image darkening by multiplying each weight by:
|
||||
1 / sum(all weights)
|
||||
*/
|
||||
float weights[5] = float[]( 0.13465834124289953661305802732548,
|
||||
0.13051534237555914090930704141833,
|
||||
0.11883557904592230273554609080014,
|
||||
0.10164546793794160274995705611009,
|
||||
0.08167444001912718529866079800870 );
|
||||
|
||||
//sample the current fragment and apply its weight
|
||||
|
||||
vec4 out_color = texture(Source, clamp(vTexCoord, lower_bound, upper_bound)) * weights[0];
|
||||
|
||||
|
||||
//iterate across the offsets in both directions sampling texels and adding their weighted alpha values to the total
|
||||
|
||||
for (int i = 1; i < 5; i++)
|
||||
{
|
||||
out_color.a += texture(Source, clamp(vTexCoord + vec2(0.0, offsets[i] * texel.y), lower_bound, upper_bound)).a * weights[i];
|
||||
|
|
@ -102,5 +109,5 @@ void main()
|
|||
}
|
||||
|
||||
//return the new value
|
||||
FragColor = vec4(out_color);
|
||||
FragColor = vec4(out_color.rgb, 1.0);
|
||||
}
|
||||
|
|
@ -6,21 +6,47 @@ layout(std140, set = 0, binding = 0) uniform UBO
|
|||
vec4 OutputSize;
|
||||
vec4 OriginalSize;
|
||||
vec4 SourceSize;
|
||||
vec4 PassOutputSize1;
|
||||
} global;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
//config //
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// Config //
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#define contrast 0.95 //useful to fine-tune the colors. higher values make the "black" color closer to black - [0, 1] [DEFAULT: 0.95]
|
||||
#define screen_light 1.00 //controls the ambient light of the screen. lower values darken the screen - [0, 2] [DEFAULT: 1.00]
|
||||
#define pixel_opacity 1.00 //controls the opacity of the dot-matrix pixels. lower values make pixels more transparent - [0, 1] [DEFAULT: 1.00]
|
||||
#define bg_smoothing 0.75 //higher values suppress changes in background color directly beneath the foreground to improve image clarity - [0, 1] [DEFAULT: 0.75]
|
||||
#define shadow_opacity 0.55 //how strongly shadows affect the background, higher values darken the shadows - [0, 1] [DEFAULT: 0.55]
|
||||
#define shadow_offset_x 1.0 //how far the shadow should be shifted to the right in pixels - [-infinity, infinity] [DEFAULT: 1.0]
|
||||
#define shadow_offset_y 1.0 //how far the shadow should be shifted to down in pixels - [-infinity, infinity] [DEFAULT: 1.5]
|
||||
#define screen_offset_x 0 //screen offset - [-infinity, infinity] [DEFAULT: 0]
|
||||
#define screen_offset_y 0 //screen offset - [-infinity, infinity] [DEFAULT: 0]
|
||||
|
||||
// Useful to fine-tune the colors.
|
||||
// Higher values make the "black" color closer to black - [0, 1] [DEFAULT: 0.95]
|
||||
#define contrast 0.95
|
||||
|
||||
// Controls the ambient light of the screen.
|
||||
// Lower values darken the screen - [0, 2] [DEFAULT: 1.00]
|
||||
#define screen_light 1.00
|
||||
|
||||
// Controls the opacity of the dot-matrix pixels.
|
||||
// Lower values make pixels more transparent - [0, 1] [DEFAULT: 1.00]
|
||||
#define pixel_opacity 1.00
|
||||
|
||||
// Higher values suppress changes in background color directly beneath
|
||||
// the foreground to improve image clarity - [0, 1] [DEFAULT: 0.75]
|
||||
#define bg_smoothing 0.75
|
||||
|
||||
// How strongly shadows affect the background
|
||||
// Higher values darken the shadows - [0, 1] [DEFAULT: 0.55]
|
||||
#define shadow_opacity 0.55
|
||||
|
||||
// How far the shadow should be shifted to the
|
||||
// right in pixels - [-infinity, infinity] [DEFAULT: 1.0]
|
||||
#define shadow_offset_x 1.0
|
||||
|
||||
// How far the shadow should be shifted
|
||||
// down in pixels - [-infinity, infinity] [DEFAULT: 1.5]
|
||||
#define shadow_offset_y 1.5
|
||||
|
||||
// Screen offset - [-infinity, infinity] [DEFAULT: 0]
|
||||
#define screen_offset_x 0
|
||||
|
||||
// Screen offset - [-infinity, infinity] [DEFAULT: 0]
|
||||
#define screen_offset_y 0
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////
|
||||
// //
|
||||
|
|
@ -53,54 +79,73 @@ void main()
|
|||
{
|
||||
gl_Position = global.MVP * Position;
|
||||
vTexCoord = TexCoord;
|
||||
texel = 1.0 / global.SourceSize.xy;
|
||||
|
||||
texel = global.SourceSize.zw;
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// Fragment definitions //
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#pragma stage fragment
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
//fragment definitions //
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#define bg_color vec4(0.625, 0.664, 0.02, 1.0) //tex2D(COLOR_PALETTE, vec2(0.25, 0.5)) //sample the background color from the palette
|
||||
#define shadow_alpha (contrast * shadow_opacity) //blending factor used when overlaying shadows on the background
|
||||
#define shadow_offset vec2(shadow_offset_x * texel.x, shadow_offset_y * texel.y) //offset for the shadow
|
||||
#define screen_offset vec2(screen_offset_x * texel.x, screen_offset_y * texel.y) //offset for the entire screen
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
//fragment shader //
|
||||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
layout(location = 0) in vec2 vTexCoord;
|
||||
layout(location = 1) in vec2 texel;
|
||||
layout(location = 0) out vec4 FragColor;
|
||||
layout(set = 0, binding = 2) uniform sampler2D Source;
|
||||
layout(set = 0, binding = 3) uniform sampler2D PassOutput1;
|
||||
layout(set = 0, binding = 1) uniform sampler2D Source;
|
||||
layout(set = 0, binding = 2) uniform sampler2D PassOutput2;
|
||||
|
||||
//#define bg_color tex2D(COLOR_PALETTE, vec2(0.25, 0.5))
|
||||
#define bg_color vec4(0.625, 0.664, 0.25, 0.5)
|
||||
|
||||
// Sample the background color from the palette
|
||||
#define shadow_alpha (contrast * shadow_opacity)
|
||||
|
||||
// Offset for the shadow
|
||||
#define shadow_offset vec2(shadow_offset_x * texel.x, shadow_offset_y * texel.y)
|
||||
|
||||
// Offset for the entire screen
|
||||
#define screen_offset vec2(screen_offset_x * texel.x, screen_offset_y * texel.y)
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
// Fragment shader //
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
void main()
|
||||
{
|
||||
//sample all the relevant textures
|
||||
vec4 foreground = texture(PassOutput1, vTexCoord - screen_offset);
|
||||
vec4 background = vec4(0.5); //hardcoded value rather than LUT
|
||||
vec4 shadows = texture(Source, vTexCoord - (shadow_offset + screen_offset));
|
||||
vec2 tex = floor(global.PassOutputSize1.xy * vTexCoord);
|
||||
tex = (tex + 0.5) * global.PassOutputSize1.zw;
|
||||
|
||||
// Sample all the relevant textures
|
||||
vec4 foreground = texture(PassOutput2, tex - screen_offset);
|
||||
vec4 background = vec4(0.5); // Hardcoded value rather than LUT
|
||||
vec4 shadows = texture(Source, tex - (shadow_offset + screen_offset));
|
||||
vec4 background_color = bg_color;
|
||||
|
||||
//foreground and background are blended with the background color
|
||||
// Foreground and background are blended with the background color
|
||||
foreground *= bg_color;
|
||||
|
||||
float bg_test = 0.0;
|
||||
if ( foreground.a > 0.0 )
|
||||
{ bg_test = 1.0; }
|
||||
bg_test = 1.0;
|
||||
|
||||
background -= (background - 0.5) * bg_smoothing * bg_test;
|
||||
|
||||
background.rgb = clamp(vec3( //allows for highlights, background = bg_color when the background color is 0.5 gray
|
||||
// Allows for highlights,
|
||||
// background = bg_color when the background color is 0.5 gray
|
||||
background.rgb = clamp(
|
||||
vec3(
|
||||
bg_color.r + mix(-1.0, 1.0, background.r),
|
||||
bg_color.g + mix(-1.0, 1.0, background.g),
|
||||
bg_color.b + mix(-1.0, 1.0, background.b) ), 0.0, 1.0);
|
||||
bg_color.b + mix(-1.0, 1.0, background.b)
|
||||
),
|
||||
0.0, 1.0
|
||||
);
|
||||
|
||||
//shadows are alpha blended with the background
|
||||
vec4 out_color = (shadows * shadows.a * shadow_alpha) + (background * (1.0 - shadows.a * shadow_alpha));
|
||||
// Shadows are alpha blended with the background
|
||||
vec4 out_color = (shadows * shadows.a * shadow_alpha) + (background * (1 - shadows.a * shadow_alpha));
|
||||
|
||||
//foreground is alpha blended with the shadowed background
|
||||
// Foreground is alpha blended with the shadowed background
|
||||
out_color = (foreground * foreground.a * contrast) + (out_color * (screen_light - foreground.a * contrast * pixel_opacity));
|
||||
|
||||
FragColor = vec4(out_color);
|
||||
FragColor = out_color;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue