repos/blastem: shaders/xBRZ.f.glsl annotate

annotate shaders/xBRZ.f.glsl @ 2661:462e43f54abf

Properly emulate extra TH transitions due to direction changes for 6-button controllers. Breaks Golden Axe II input the same as hardware with a 6-button controller

author	Michael Pavone <pavone@retrodev.com>
date	Wed, 05 Mar 2025 22:20:20 -0800
parents	9a5e627c1b1f
children

rev	line source
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	1 // xBRZ freescale
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	2 // based on :
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	3
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	4 /*
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	5 Hyllian's xBR-vertex code and texel mapping
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	6
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	7 Copyright (C) 2011/2016 Hyllian - sergiogdb@gmail.com
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	8
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	9 Permission is hereby granted, free of charge, to any person obtaining a copy
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	10 of this software and associated documentation files (the "Software"), to deal
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	11 in the Software without restriction, including without limitation the rights
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	12 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	13 copies of the Software, and to permit persons to whom the Software is
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	14 furnished to do so, subject to the following conditions:
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	15
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	16 The above copyright notice and this permission notice shall be included in
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	17 all copies or substantial portions of the Software.
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	18
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	21 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	22 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	23 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	24 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	25 THE SOFTWARE.
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	26
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	27 */
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	28
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	29 // This shader also uses code and/or concepts from xBRZ as it appears
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	30 // in the Desmume source code. The license for which is as follows:
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	31
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	32 // ****************************************************************************
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	33 // * This file is part of the HqMAME project. It is distributed under *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	34 // * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	35 // * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	36 // * *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	37 // * Additionally and as a special exception, the author gives permission *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	38 // * to link the code of this program with the MAME library (or with modified *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	39 // * versions of MAME that use the same license as MAME), and distribute *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	40 // * linked combinations including the two. You must obey the GNU General *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	41 // * Public License in all respects for all of the code used other than MAME. *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	42 // * If you modify this file, you may extend this exception to your version *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	43 // * of the file, but you are not obligated to do so. If you do not wish to *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	44 // * do so, delete this exception statement from your version. *
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	45 // ****************************************************************************
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	46 // ported to blastem shader format by hunterk
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	47
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	48 uniform sampler2D textures[2];
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	49 uniform mediump vec2 texsize;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	50 varying mediump vec2 texcoord;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	51
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	52 #define BLEND_NONE 0
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	53 #define BLEND_NORMAL 1
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	54 #define BLEND_DOMINANT 2
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	55 #define LUMINANCE_WEIGHT 1.0
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	56 #define EQUAL_COLOR_TOLERANCE 30.0/255.0
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	57 #define STEEP_DIRECTION_THRESHOLD 2.2
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	58 #define DOMINANT_DIRECTION_THRESHOLD 3.6
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	59
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	60 // this is usually handled automatically but blastem doesn't expose output size?
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	61 #define scale vec2(10.0, 10.0)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	62
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	63 mediump float DistYCbCr(mediump vec3 pixA, mediump vec3 pixB)
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	64 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	65 const mediump vec3 w = vec3(0.2627, 0.6780, 0.0593);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	66 const mediump float scaleB = 0.5 / (1.0 - w.b);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	67 const mediump float scaleR = 0.5 / (1.0 - w.r);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	68 mediump vec3 diff = pixA - pixB;
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	69 mediump float Y = dot(diff.rgb, w);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	70 mediump float Cb = scaleB * (diff.b - Y);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	71 mediump float Cr = scaleR * (diff.r - Y);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	72
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	73 return sqrt(((LUMINANCE_WEIGHT * Y) * (LUMINANCE_WEIGHT * Y)) + (Cb * Cb) + (Cr * Cr));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	74 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	75
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	76 bool IsPixEqual(const mediump vec3 pixA, const mediump vec3 pixB)
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	77 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	78 return (DistYCbCr(pixA, pixB) < EQUAL_COLOR_TOLERANCE);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	79 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	80
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	81 mediump float get_left_ratio(mediump vec2 center, mediump vec2 origin, mediump vec2 direction, mediump vec2 scale_)
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	82 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	83 mediump vec2 P0 = center - origin;
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	84 mediump vec2 proj = direction * (dot(P0, direction) / dot(direction, direction));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	85 mediump vec2 distv = P0 - proj;
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	86 mediump vec2 orth = vec2(-direction.y, direction.x);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	87 mediump float side = sign(dot(P0, orth));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	88 mediump float v = side * length(distv * scale_);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	89
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	90 // return step(0, v);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	91 return smoothstep(-sqrt(2.0)/2.0, sqrt(2.0)/2.0, v);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	92 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	93
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	94 #define eq(a,b) (a == b)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	95 #define neq(a,b) (a != b)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	96
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	97 #define P(x,y) texture2D(textures[0], coord + (1.0 / texsize) * vec2(x, y)).rgb
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	98
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	99 void main()
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	100 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	101 //---------------------------------------
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	102 // Input Pixel Mapping: -\|x\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	103 // x\|A\|B\|C\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	104 // x\|D\|E\|F\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	105 // x\|G\|H\|I\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	106 // -\|x\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	107
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	108 mediump vec2 pos = fract(texcoord * texsize.xy) - vec2(0.5, 0.5);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	109 mediump vec2 coord = texcoord - pos * (1.0 / texsize.xy);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	110
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	111 mediump vec3 A = P(-1,-1);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	112 mediump vec3 B = P( 0,-1);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	113 mediump vec3 C = P( 1,-1);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	114 mediump vec3 D = P(-1, 0);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	115 mediump vec3 E = P( 0, 0);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	116 mediump vec3 F = P( 1, 0);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	117 mediump vec3 G = P(-1, 1);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	118 mediump vec3 H = P( 0, 1);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	119 mediump vec3 I = P( 1, 1);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	120
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	121 // blendResult Mapping: x\|y\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	122 // w\|z\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	123 ivec4 blendResult = ivec4(BLEND_NONE,BLEND_NONE,BLEND_NONE,BLEND_NONE);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	124
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	125 // Preprocess corners
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	126 // Pixel Tap Mapping: -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	127 // -\|-\|B\|C\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	128 // -\|D\|E\|F\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	129 // -\|G\|H\|I\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	130 // -\|-\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	131 if (!((eq(E,F) && eq(H,I)) \|\| (eq(E,H) && eq(F,I))))
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	132 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	133 mediump float dist_H_F = DistYCbCr(G, E) + DistYCbCr(E, C) + DistYCbCr(P(0,2), I) + DistYCbCr(I, P(2,0)) + (4.0 * DistYCbCr(H, F));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	134 mediump float dist_E_I = DistYCbCr(D, H) + DistYCbCr(H, P(1,2)) + DistYCbCr(B, F) + DistYCbCr(F, P(2,1)) + (4.0 * DistYCbCr(E, I));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	135 bool dominantGradient = (DOMINANT_DIRECTION_THRESHOLD * dist_H_F) < dist_E_I;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	136 blendResult.z = ((dist_H_F < dist_E_I) && neq(E,F) && neq(E,H)) ? ((dominantGradient) ? BLEND_DOMINANT : BLEND_NORMAL) : BLEND_NONE;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	137 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	138
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	139
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	140 // Pixel Tap Mapping: -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	141 // -\|A\|B\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	142 // x\|D\|E\|F\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	143 // x\|G\|H\|I\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	144 // -\|x\|x\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	145 if (!((eq(D,E) && eq(G,H)) \|\| (eq(D,G) && eq(E,H))))
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	146 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	147 mediump float dist_G_E = DistYCbCr(P(-2,1) , D) + DistYCbCr(D, B) + DistYCbCr(P(-1,2), H) + DistYCbCr(H, F) + (4.0 * DistYCbCr(G, E));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	148 mediump float dist_D_H = DistYCbCr(P(-2,0) , G) + DistYCbCr(G, P(0,2)) + DistYCbCr(A, E) + DistYCbCr(E, I) + (4.0 * DistYCbCr(D, H));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	149 bool dominantGradient = (DOMINANT_DIRECTION_THRESHOLD * dist_D_H) < dist_G_E;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	150 blendResult.w = ((dist_G_E > dist_D_H) && neq(E,D) && neq(E,H)) ? ((dominantGradient) ? BLEND_DOMINANT : BLEND_NORMAL) : BLEND_NONE;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	151 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	152
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	153 // Pixel Tap Mapping: -\|-\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	154 // -\|A\|B\|C\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	155 // -\|D\|E\|F\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	156 // -\|-\|H\|I\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	157 // -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	158 if (!((eq(B,C) && eq(E,F)) \|\| (eq(B,E) && eq(C,F))))
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	159 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	160 mediump float dist_E_C = DistYCbCr(D, B) + DistYCbCr(B, P(1,-2)) + DistYCbCr(H, F) + DistYCbCr(F, P(2,-1)) + (4.0 * DistYCbCr(E, C));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	161 mediump float dist_B_F = DistYCbCr(A, E) + DistYCbCr(E, I) + DistYCbCr(P(0,-2), C) + DistYCbCr(C, P(2,0)) + (4.0 * DistYCbCr(B, F));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	162 bool dominantGradient = (DOMINANT_DIRECTION_THRESHOLD * dist_B_F) < dist_E_C;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	163 blendResult.y = ((dist_E_C > dist_B_F) && neq(E,B) && neq(E,F)) ? ((dominantGradient) ? BLEND_DOMINANT : BLEND_NORMAL) : BLEND_NONE;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	164 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	165
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	166 // Pixel Tap Mapping: -\|x\|x\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	167 // x\|A\|B\|C\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	168 // x\|D\|E\|F\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	169 // -\|G\|H\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	170 // -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	171 if (!((eq(A,B) && eq(D,E)) \|\| (eq(A,D) && eq(B,E))))
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	172 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	173 mediump float dist_D_B = DistYCbCr(P(-2,0), A) + DistYCbCr(A, P(0,-2)) + DistYCbCr(G, E) + DistYCbCr(E, C) + (4.0 * DistYCbCr(D, B));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	174 mediump float dist_A_E = DistYCbCr(P(-2,-1), D) + DistYCbCr(D, H) + DistYCbCr(P(-1,-2), B) + DistYCbCr(B, F) + (4.0 * DistYCbCr(A, E));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	175 bool dominantGradient = (DOMINANT_DIRECTION_THRESHOLD * dist_D_B) < dist_A_E;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	176 blendResult.x = ((dist_D_B < dist_A_E) && neq(E,D) && neq(E,B)) ? ((dominantGradient) ? BLEND_DOMINANT : BLEND_NORMAL) : BLEND_NONE;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	177 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	178
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	179 mediump vec3 res = E;
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	180
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	181 // Pixel Tap Mapping: -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	182 // -\|-\|B\|C\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	183 // -\|D\|E\|F\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	184 // -\|G\|H\|I\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	185 // -\|-\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	186 if(blendResult.z != BLEND_NONE)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	187 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	188 mediump float dist_F_G = DistYCbCr(F, G);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	189 mediump float dist_H_C = DistYCbCr(H, C);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	190 bool doLineBlend = (blendResult.z == BLEND_DOMINANT \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	191 !((blendResult.y != BLEND_NONE && !IsPixEqual(E, G)) \|\| (blendResult.w != BLEND_NONE && !IsPixEqual(E, C)) \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	192 (IsPixEqual(G, H) && IsPixEqual(H, I) && IsPixEqual(I, F) && IsPixEqual(F, C) && !IsPixEqual(E, I))));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	193
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	194 mediump vec2 origin = vec2(0.0, 1.0 / sqrt(2.0));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	195 mediump vec2 direction = vec2(1.0, -1.0);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	196 if(doLineBlend)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	197 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	198 bool haveShallowLine = (STEEP_DIRECTION_THRESHOLD * dist_F_G <= dist_H_C) && neq(E,G) && neq(D,G);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	199 bool haveSteepLine = (STEEP_DIRECTION_THRESHOLD * dist_H_C <= dist_F_G) && neq(E,C) && neq(B,C);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	200 origin = haveShallowLine? vec2(0.0, 0.25) : vec2(0.0, 0.5);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	201 direction.x += haveShallowLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	202 direction.y -= haveSteepLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	203 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	204
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	205 mediump vec3 blendPix = mix(H,F, step(DistYCbCr(E, F), DistYCbCr(E, H)));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	206 res = mix(res, blendPix, get_left_ratio(pos, origin, direction, scale));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	207 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	208
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	209 // Pixel Tap Mapping: -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	210 // -\|A\|B\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	211 // x\|D\|E\|F\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	212 // x\|G\|H\|I\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	213 // -\|x\|x\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	214 if(blendResult.w != BLEND_NONE)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	215 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	216 mediump float dist_H_A = DistYCbCr(H, A);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	217 mediump float dist_D_I = DistYCbCr(D, I);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	218 bool doLineBlend = (blendResult.w == BLEND_DOMINANT \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	219 !((blendResult.z != BLEND_NONE && !IsPixEqual(E, A)) \|\| (blendResult.x != BLEND_NONE && !IsPixEqual(E, I)) \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	220 (IsPixEqual(A, D) && IsPixEqual(D, G) && IsPixEqual(G, H) && IsPixEqual(H, I) && !IsPixEqual(E, G))));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	221
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	222 mediump vec2 origin = vec2(-1.0 / sqrt(2.0), 0.0);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	223 mediump vec2 direction = vec2(1.0, 1.0);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	224 if(doLineBlend)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	225 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	226 bool haveShallowLine = (STEEP_DIRECTION_THRESHOLD * dist_H_A <= dist_D_I) && neq(E,A) && neq(B,A);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	227 bool haveSteepLine = (STEEP_DIRECTION_THRESHOLD * dist_D_I <= dist_H_A) && neq(E,I) && neq(F,I);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	228 origin = haveShallowLine? vec2(-0.25, 0.0) : vec2(-0.5, 0.0);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	229 direction.y += haveShallowLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	230 direction.x += haveSteepLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	231 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	232 origin = origin;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	233 direction = direction;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	234
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	235 mediump vec3 blendPix = mix(H,D, step(DistYCbCr(E, D), DistYCbCr(E, H)));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	236 res = mix(res, blendPix, get_left_ratio(pos, origin, direction, scale));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	237 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	238
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	239 // Pixel Tap Mapping: -\|-\|x\|x\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	240 // -\|A\|B\|C\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	241 // -\|D\|E\|F\|x
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	242 // -\|-\|H\|I\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	243 // -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	244 if(blendResult.y != BLEND_NONE)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	245 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	246 mediump float dist_B_I = DistYCbCr(B, I);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	247 mediump float dist_F_A = DistYCbCr(F, A);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	248 bool doLineBlend = (blendResult.y == BLEND_DOMINANT \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	249 !((blendResult.x != BLEND_NONE && !IsPixEqual(E, I)) \|\| (blendResult.z != BLEND_NONE && !IsPixEqual(E, A)) \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	250 (IsPixEqual(I, F) && IsPixEqual(F, C) && IsPixEqual(C, B) && IsPixEqual(B, A) && !IsPixEqual(E, C))));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	251
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	252 mediump vec2 origin = vec2(1.0 / sqrt(2.0), 0.0);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	253 mediump vec2 direction = vec2(-1.0, -1.0);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	254
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	255 if(doLineBlend)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	256 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	257 bool haveShallowLine = (STEEP_DIRECTION_THRESHOLD * dist_B_I <= dist_F_A) && neq(E,I) && neq(H,I);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	258 bool haveSteepLine = (STEEP_DIRECTION_THRESHOLD * dist_F_A <= dist_B_I) && neq(E,A) && neq(D,A);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	259 origin = haveShallowLine? vec2(0.25, 0.0) : vec2(0.5, 0.0);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	260 direction.y -= haveShallowLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	261 direction.x -= haveSteepLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	262 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	263
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	264 mediump vec3 blendPix = mix(F,B, step(DistYCbCr(E, B), DistYCbCr(E, F)));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	265 res = mix(res, blendPix, get_left_ratio(pos, origin, direction, scale));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	266 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	267
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	268 // Pixel Tap Mapping: -\|x\|x\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	269 // x\|A\|B\|C\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	270 // x\|D\|E\|F\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	271 // -\|G\|H\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	272 // -\|-\|-\|-\|-
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	273 if(blendResult.x != BLEND_NONE)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	274 {
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	275 mediump float dist_D_C = DistYCbCr(D, C);
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	276 mediump float dist_B_G = DistYCbCr(B, G);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	277 bool doLineBlend = (blendResult.x == BLEND_DOMINANT \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	278 !((blendResult.w != BLEND_NONE && !IsPixEqual(E, C)) \|\| (blendResult.y != BLEND_NONE && !IsPixEqual(E, G)) \|\|
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	279 (IsPixEqual(C, B) && IsPixEqual(B, A) && IsPixEqual(A, D) && IsPixEqual(D, G) && !IsPixEqual(E, A))));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	280
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	281 mediump vec2 origin = vec2(0.0, -1.0 / sqrt(2.0));
9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	282 mediump vec2 direction = vec2(-1.0, 1.0);
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	283 if(doLineBlend)
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	284 {
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	285 bool haveShallowLine = (STEEP_DIRECTION_THRESHOLD * dist_D_C <= dist_B_G) && neq(E,C) && neq(F,C);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	286 bool haveSteepLine = (STEEP_DIRECTION_THRESHOLD * dist_B_G <= dist_D_C) && neq(E,G) && neq(H,G);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	287 origin = haveShallowLine? vec2(0.0, -0.25) : vec2(0.0, -0.5);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	288 direction.x -= haveShallowLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	289 direction.y += haveSteepLine? 1.0: 0.0;
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	290 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	291
2660 9a5e627c1b1f Make xBRZ shader be WebGL compatible Michael Pavone <pavone@retrodev.com> parents: 2495 diff changeset	292 mediump vec3 blendPix = mix(D,B, step(DistYCbCr(E, B), DistYCbCr(E, D)));
2495 d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	293 res = mix(res, blendPix, get_left_ratio(pos, origin, direction, scale));
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	294 }
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	295
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	296 gl_FragColor = vec4(res, 1.0);
d437b8e8ba62 Add xBRZ and bandlimit pixel footprint shaders ported by hunterk Michael Pavone <pavone@retrodev.com> parents: diff changeset	297 }

Mercurial > repos > blastem

annotate shaders/xBRZ.f.glsl @ 2661:462e43f54abf