mirror of
https://github.com/italicsjenga/slang-shaders.git
synced 2024-10-17 07:11:32 +11:00
394 lines
14 KiB
Plaintext
394 lines
14 KiB
Plaintext
#version 450
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// Text with VHS font
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// by Astherix
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// https://www.shadertoy.com/view/NdGyDK
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// adapted for slang by hunterk
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layout(push_constant) uniform Push
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{
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vec4 SourceSize;
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vec4 OriginalSize;
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vec4 OutputSize;
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uint FrameCount;
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int FrameDirection;
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float godot_warp_amount;
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} params;
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#pragma parameter godot_warp_amount "Warp Amount" 1.0 0.0 5.0 0.1
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float warp_amount = params.godot_warp_amount; // Warp the texture edges simulating the curved glass of a CRT monitor or old TV.
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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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// shadertoy compatibility macros
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#define iChannel0 Source
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#define iResolution params.OutputSize.xy
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#define fragCoord (vTexCoord.xy * params.OutputSize.xy)
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#define fragColor FragColor
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#define iFrame params.FrameCount
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#define iTime (params.FrameCount / 60.)
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// Font data gotten from STV5730's ROM, modified for size
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/* stv5730.bin (6/18/2022 2:37:22 PM)
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StartOffset(h): 00000000, EndOffset(h): 00000A1F, Length(h): 00000A20 */
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int[] font = int[](
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60606060, 0x60606060, 0x60606060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x06000600, 0x1E001E00,
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0x06000600, 0x06000600, 0x06000600,
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0x06000600, 0x1F801F80, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x006000E0, 0x1FC03F80, 0x70006000,
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0x60006000, 0x7FE07FE0, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x006000E0, 0x07C007C0, 0x00E00060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x07800F80, 0x1D803980,
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0x71806180, 0x61806180, 0x7FE07FE0,
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0x01800180, 0x01800180, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x60006000,
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0x7F807FC0, 0x00E00060, 0x00600060,
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0x606070E0, 0x3FC01F00, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60006000, 0x7F807FC0, 0x60E06060,
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0x606070C0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x006000C0,
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0x01800300, 0x06000600, 0x06000600,
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0x06000600, 0x06000600, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x606070E0, 0x3FC03FC0, 0x70E06060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60607060, 0x3FE01FE0, 0x00600060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x3FC03FC0, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x06000F00, 0x1F8039C0,
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0x70E06060, 0x60606060, 0x7FE07FE0,
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0x60606060, 0x60606060, 0x00000000,
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0x00000000, 0x7F807FC0, 0x60E06060,
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0x606060E0, 0x7FC07FC0, 0x60E06060,
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0x606060E0, 0x7FC07F80, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60006000, 0x60006000, 0x60006000,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x7F807FC0, 0x60E06060,
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0x60606060, 0x60606060, 0x60606060,
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0x606060E0, 0x7FC07F80, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x60006000,
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0x60006000, 0x7F807F80, 0x60006000,
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0x60006000, 0x7FE07FE0, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x60006000,
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0x60006000, 0x7F807F80, 0x60006000,
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0x60006000, 0x60006000, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60006000, 0x63E063E0, 0x60606060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x60606060, 0x60606060,
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0x60606060, 0x7FE07FE0, 0x60606060,
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0x60606060, 0x60606060, 0x00000000,
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0x00000000, 0x1F801F80, 0x06000600,
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0x06000600, 0x06000600, 0x06000600,
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0x06000600, 0x1F801F80, 0x00000000,
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0x00000000, 0x07E007E0, 0x01800180,
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0x01800180, 0x01800180, 0x01800180,
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0x61807380, 0x3F001E00, 0x00000000,
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0x00000000, 0x606060E0, 0x61C06380,
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0x67007E00, 0x7C007C00, 0x6E006700,
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0x638061C0, 0x60E06060, 0x00000000,
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0x00000000, 0x60006000, 0x60006000,
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0x60006000, 0x60006000, 0x60006000,
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0x60006000, 0x7FE07FE0, 0x00000000,
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0x00000000, 0x60606060, 0x70E079E0,
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0x7FE06F60, 0x66606060, 0x60606060,
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0x60606060, 0x60606060, 0x00000000,
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0x00000000, 0x60606060, 0x60607060,
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0x78607C60, 0x6E606760, 0x63E061E0,
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0x60E06060, 0x60606060, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60606060, 0x60606060, 0x60606060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x7F807FC0, 0x60E06060,
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0x606060E0, 0x7FC07F80, 0x60006000,
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0x60006000, 0x60006000, 0x00000000,
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0x00000000, 0x1F803FC0, 0x70E06060,
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0x60606060, 0x60606060, 0x66606760,
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0x63E071C0, 0x3FE01E60, 0x00000000,
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0x00000000, 0x7F807FC0, 0x60E06060,
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0x606060E0, 0x7FC07F80, 0x6E006700,
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0x638061C0, 0x60E06060, 0x00000000,
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0x00000000, 0x1FE03FE0, 0x70006000,
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0x60007000, 0x3F801FC0, 0x00E00060,
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0x006000E0, 0x7FC07F80, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x06000600,
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0x06000600, 0x06000600, 0x06000600,
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0x06000600, 0x06000600, 0x00000000,
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0x00000000, 0x60606060, 0x60606060,
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0x60606060, 0x60606060, 0x60606060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x60606060, 0x60606060,
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0x60606060, 0x60606060, 0x606070E0,
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0x39C01F80, 0x0F000600, 0x00000000,
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0x00000000, 0x60606060, 0x60606060,
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0x60606060, 0x60606660, 0x6F607FE0,
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0x79E070E0, 0x60606060, 0x00000000,
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0x00000000, 0x60606060, 0x606070E0,
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0x39C01F80, 0x0F000F00, 0x1F8039C0,
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0x70E06060, 0x60606060, 0x00000000,
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0x00000000, 0x60606060, 0x60606060,
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0x70E039C0, 0x1F800F00, 0x06000600,
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0x06000600, 0x06000600, 0x00000000,
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0x00000000, 0x7FE07FE0, 0x006000E0,
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0x01C00380, 0x07000E00, 0x1C003800,
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0x70006000, 0x7FE07FE0, 0x00000000,
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0x00000000, 0x00000000, 0x06000600,
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0x00000000, 0x00000000, 0x00000000,
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0x06000600, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x60006000, 0x00000000,
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0x00000000, 0x00000000, 0x006000E0,
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0x01C00380, 0x07000E00, 0x1C003800,
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0x70006000, 0x00000000, 0x00000000,
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0x00000000, 0x06000600, 0x02000400,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F003F80, 0x31C000C0, 0x1FC03FC0,
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0x70C060C0, 0x7FE03F60, 0x00000000,
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0x00000000, 0x60006000, 0x60006000,
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0x6F807FC0, 0x70E06060, 0x60606060,
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0x606060E0, 0x7FC07F80, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F803FC0, 0x70E06000, 0x60006000,
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0x600070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x00C000C0, 0x00C000C0,
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0x1FC03FC0, 0x30C060C0, 0x60C060C0,
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0x60C030C0, 0x3FE01FE0, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F803FC0, 0x70E06060, 0x7FE07FE0,
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0x600070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x07800FC0, 0x0CC00C00,
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0x0C003F00, 0x3F000C00, 0x0C000C00,
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0x0C000C00, 0x0C000C00, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F603FE0, 0x70E06060, 0x70E03FE0,
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0x1F600060, 0x70E03FC0, 0x1F800000,
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0x00000000, 0x60006000, 0x60006000,
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0x67806FC0, 0x78E07060, 0x60606060,
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0x60606060, 0x60606060, 0x00000000,
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0x00000000, 0x06000600, 0x00000000,
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0x0E000600, 0x06000600, 0x06000600,
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0x06000600, 0x06001F80, 0x00000000,
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0x00000000, 0x01800180, 0x00000000,
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0x03800180, 0x01800180, 0x01800180,
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0x01803180, 0x3B801F00, 0x0E000000,
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0x00000000, 0x60006000, 0x60006000,
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0x606060E0, 0x61C06380, 0x67006F00,
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0x7F8079C0, 0x60E06060, 0x00000000,
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0x00000000, 0x0E000600, 0x06000600,
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0x06000600, 0x06000600, 0x06000600,
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0x06000680, 0x07800300, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x6DC076C0, 0x66606660, 0x66606660,
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0x66606660, 0x66606660, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x6F807FC0, 0x70E07060, 0x60606060,
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0x60606060, 0x60606060, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F803FC0, 0x70E06060, 0x60606060,
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0x606070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x6F807FC0, 0x70E06060, 0x606070E0,
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0x7FC06F80, 0x60006000, 0x60000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F603FE0, 0x70E06060, 0x606070E0,
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0x3FE01F60, 0x00600060, 0x00600000,
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0x00000000, 0x00000000, 0x00000000,
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0x6F807FC0, 0x78E07060, 0x60006000,
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0x60006000, 0x60006000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x1F803FC0, 0x70E07000, 0x3F803FC0,
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0x00E070E0, 0x3FC01F80, 0x00000000,
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0x00000000, 0x06000600, 0x06000600,
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0x1F801F80, 0x06000600, 0x06000600,
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0x06000600, 0x07800380, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x60606060, 0x60606060, 0x60606060,
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0x606070E0, 0x3FE01F60, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x60606060, 0x60606060, 0x606070E0,
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0x39C01F80, 0x0F000600, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x60606060, 0x66606660, 0x66606660,
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0x6F607FE0, 0x39C01080, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x606070E0, 0x39C01F80, 0x0F000F00,
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0x1F8039C0, 0x70E06060, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x60606060, 0x60606060, 0x70603FE0,
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0x1FE00060, 0x00E01FC0, 0x1F800000,
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0x00000000, 0x00000000, 0x00000000,
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0x7FE07FE0, 0x01C00380, 0x07000E00,
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0x1C003800, 0x7FE07FE0, 0x00000000,
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0x00000000, 0x00001000, 0x18001C00,
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0x1E001F00, 0x1F801FC0, 0x1F801F00,
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0x1E001C00, 0x18001000, 0x00000000,
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0x00000000, 0x00008400, 0xC600E700,
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0xF780FFC0, 0xFFE0FFF0, 0xFFE0FFC0,
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0xF780E700, 0xC6008400, 0x00000000,
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0x00000000, 0x00000210, 0x06300E70,
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0x1EF03FF0, 0x7FF0FFF0, 0x7FF03FF0,
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0x1EF00E70, 0x06300210, 0x00000000,
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0x00000000, 0x00007FE0, 0x7FE07FE0,
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0x7FE07FE0, 0x7FE07FE0, 0x7FE07FE0,
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0x7FE07FE0, 0x7FE07FE0, 0x00000000
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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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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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}
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#pragma stage fragment
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layout(location = 0) in vec2 vTexCoord;
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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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// Character values are on the bottom of this document
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// https://github.com/codeman38/vcr-fonts/blob/master/sources/stv5730/STV5730a.pdf
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int get_char_pixel(int x, int y, int c, bool inv) {
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int base = ((x >> 3) + (y * 2) + (c * 0x24)) >> 2;
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int offset = ((y & 0x1) != 0) ? 0 : 16;
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int value = (font[base] >> offset) & 0xffff;
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if (inv) {
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return (value & (1 << (0xf - (x & 0xf)))) == 0 ? 1 : 2;
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} else {
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return (value & (1 << (0xf - (x & 0xf)))) != 0 ? 1 : 0;
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}
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}
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int print_char(vec2 p, vec2 g, int c, bool inv, bool border) {
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bool box = (p.x >= (g.x * 12.0)) && (p.x < ((g.x + 1.0) * 12.0)) &&
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(p.y >= (g.y * 18.0)) && (p.y < ((g.y + 1.0) * 18.0));
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if (!box) return 0;
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if (border && !inv) {
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int pixel = get_char_pixel(int(p.x) % 12, int(p.y) % 18, c, inv);
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if (pixel != 0) return 1;
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for (int y = -1; y <= 1; y++) {
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for (int x = -1; x <= 1; x++) {
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pixel = get_char_pixel((int(p.x) + x) % 12, (int(p.y) + y) % 18, c, false);
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if (pixel != 0) return 2;
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}
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}
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}
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return get_char_pixel(int(p.x) % 12, int(p.y) % 18, c, inv);
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}
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int characters[2];
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void number_to_characters(float n) {
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int high = int(floor(n / 10.0)),
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low = int(n) - (high * 10);
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characters[0] = high;
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characters[1] = low;
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}
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// I don't love this, but we have to match the CRT pass' curvature at least somewhat
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// Takes in the UV and warps the edges, creating the spherized effect
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vec2 warp(vec2 uv){
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vec2 delta = uv - 0.5;
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float delta2 = dot(delta.xy, delta.xy);
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float delta4 = delta2 * delta2;
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float delta_offset = delta4 * warp_amount;
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return uv + delta * delta_offset;
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}
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void main()
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{
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vec2 uv = warp(vTexCoord);
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vec2 p = uv.xy * vec2(300.,225.);//vec2(fragCoord.x, iResolution.y - fragCoord.y) / 2.;
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vec4 t = texture(iChannel0, vTexCoord);
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float timer = (params.FrameDirection > 0.5) ? float(params.FrameCount) : 0.0;
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int acc = 0;
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if(params.FrameDirection < -0.5){ // when rewind is detected, show the REWIND message
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// Rewind
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acc += int(print_char(p, vec2(2.0, 1.0) , 0x1d, false, true)); // R
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acc += int(print_char(p, vec2(3.0, 1.0) , 0x10, false, true)); // E
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acc += int(print_char(p, vec2(4.0, 1.0) , 0x22, false, true)); // W
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acc += int(print_char(p, vec2(5.0, 1.0) , 0x14, false, true)); // I
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acc += int(print_char(p, vec2(6.0, 1.0) , 0x19, false, true)); // N
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acc += int(print_char(p, vec2(7.0, 1.0) , 0x0f, false, true)); // D
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acc += int(print_char(p, vec2(9.0, 1.0) , 0x46, false, true)); // <<
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}
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// blink the PLAY message for 1000 frames
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else if((mod(timer, 100.0) < 50.0) && (timer != 0.0) && (timer < 1000.0))
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{
|
|
// Play
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acc += int(print_char(p, vec2(2.0, 1.0) , 0x1b, false, true)); // P
|
|
acc += int(print_char(p, vec2(3.0, 1.0) , 0x17, false, true)); // L
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acc += int(print_char(p, vec2(4.0, 1.0) , 0x0c, false, true)); // A
|
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acc += int(print_char(p, vec2(5.0, 1.0) , 0x24, false, true)); // Y
|
|
acc += int(print_char(p, vec2(7.0, 1.0) , 0x44, false, true)); // >
|
|
}
|
|
|
|
float s = mod(floor(iTime), 60.0);
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float m = mod(floor(iTime/60.0), 60.0);
|
|
float h = mod(floor(iTime/3600.0), 24.0);
|
|
|
|
// Timecode
|
|
acc += int(print_char(p, vec2(2.0, 10.0) , 0x1e, false, true)); // S
|
|
acc += int(print_char(p, vec2(3.0, 10.0) , 0x1b, false, true)); // P
|
|
|
|
number_to_characters(h);
|
|
acc += int(print_char(p, vec2(5.0, 10.0) , characters[0], false, true)); // 0
|
|
acc += int(print_char(p, vec2(6.0, 10.0) , characters[1], false, true)); // 0
|
|
acc += int(print_char(p, vec2(7.0, 10.0) , 0x26, false, true)); // :
|
|
|
|
number_to_characters(m);
|
|
acc += int(print_char(p, vec2(8.0, 10.0) , characters[0], false, true)); // 0
|
|
acc += int(print_char(p, vec2(9.0, 10.0) , characters[1], false, true)); // 0
|
|
acc += int(print_char(p, vec2(10.0, 10.0), 0x26, false, true)); // :
|
|
|
|
number_to_characters(s);
|
|
acc += int(print_char(p, vec2(11.0, 10.0), characters[0], false, true)); // 0
|
|
acc += int(print_char(p, vec2(12.0, 10.0), characters[1], false, true)); // 0
|
|
|
|
// This pass lets iChannel0 pass through
|
|
if (acc == 0) fragColor = t;
|
|
if (acc == 1) fragColor = vec4(1.0);
|
|
if (acc == 2) fragColor = vec4(0.0, 0.0, 0.0, 1.0);
|
|
|
|
// only show the OSD when the content first launches or during rewind
|
|
fragColor = ((timer < 1000.0) || (params.FrameDirection < -0.5)) ? fragColor : t;
|
|
}
|