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https://github.com/italicsjenga/slang-shaders.git
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59 lines
3 KiB
C
59 lines
3 KiB
C
#ifndef USER_CGP_CONSTANTS_H
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#define USER_CGP_CONSTANTS_H
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// IMPORTANT:
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// These constants MUST be set appropriately for the settings in crt-royale.cgp
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// (or whatever related .cgp file you're using). If they aren't, you're likely
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// to get artifacts, the wrong phosphor mask size, etc. I wish these could be
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// set directly in the .cgp file to make things easier, but...they can't.
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// PASS SCALES AND RELATED CONSTANTS:
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// Copy the absolute scale_x for BLOOM_APPROX. There are two major versions of
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// this shader: One does a viewport-scale bloom, and the other skips it. The
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// latter benefits from a higher bloom_approx_scale_x, so save both separately:
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static const float bloom_approx_size_x = 320.0;
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static const float bloom_approx_size_x_for_fake = 400.0;
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// Copy the viewport-relative scales of the phosphor mask resize passes
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// (MASK_RESIZE and the pass immediately preceding it):
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static const float2 mask_resize_viewport_scale = float2(0.0625, 0.0625);
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// Copy the geom_max_aspect_ratio used to calculate the MASK_RESIZE scales, etc.:
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static const float geom_max_aspect_ratio = 4.0/3.0;
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// PHOSPHOR MASK TEXTURE CONSTANTS:
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// Set the following constants to reflect the properties of the phosphor mask
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// texture named in crt-royale.cgp. The shader optionally resizes a mask tile
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// based on user settings, then repeats a single tile until filling the screen.
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// The shader must know the input texture size (default 64x64), and to manually
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// resize, it must also know the horizontal triads per tile (default 8).
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static const float2 mask_texture_small_size = float2(64.0, 64.0);
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static const float2 mask_texture_large_size = float2(512.0, 512.0);
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static const float mask_triads_per_tile = 8.0;
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// We need the average brightness of the phosphor mask to compensate for the
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// dimming it causes. The following four values are roughly correct for the
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// masks included with the shader. Update the value for any LUT texture you
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// change. [Un]comment "#define PHOSPHOR_MASK_GRILLE14" depending on whether
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// the loaded aperture grille uses 14-pixel or 15-pixel stripes (default 15).
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//#define PHOSPHOR_MASK_GRILLE14
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static const float mask_grille14_avg_color = 50.6666666/255.0;
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// TileableLinearApertureGrille14Wide7d33Spacing*.png
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// TileableLinearApertureGrille14Wide10And6Spacing*.png
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static const float mask_grille15_avg_color = 53.0/255.0;
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// TileableLinearApertureGrille15Wide6d33Spacing*.png
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// TileableLinearApertureGrille15Wide8And5d5Spacing*.png
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static const float mask_slot_avg_color = 46.0/255.0;
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// TileableLinearSlotMask15Wide9And4d5Horizontal8VerticalSpacing*.png
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// TileableLinearSlotMaskTall15Wide9And4d5Horizontal9d14VerticalSpacing*.png
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static const float mask_shadow_avg_color = 41.0/255.0;
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// TileableLinearShadowMask*.png
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// TileableLinearShadowMaskEDP*.png
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#ifdef PHOSPHOR_MASK_GRILLE14
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static const float mask_grille_avg_color = mask_grille14_avg_color;
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#else
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static const float mask_grille_avg_color = mask_grille15_avg_color;
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#endif
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#endif // USER_CGP_CONSTANTS_H
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