1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/*
* Copyright (C) 2005-2015 Team XBMC
* http://xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include "convolution_d3d.fx"
#include "output_d3d.fx"
SamplerState RGBSampler : IMMUTABLE
{
AddressU = CLAMP;
AddressV = CLAMP;
Filter = MIN_MAG_POINT_MIP_LINEAR;
};
inline half4 weight(float pos)
{
#ifdef HAS_RGBA
half4 w = g_KernelTexture.Sample(KernelSampler, pos);
#else
half4 w = g_KernelTexture.Sample(KernelSampler, pos).bgra;
#endif
#ifndef HAS_FLOAT_TEXTURE
w = w * 2.0 - 1.0;
#endif
return w;
}
inline half3 pixel(float xpos, float ypos)
{
return g_Texture.Sample(RGBSampler, float2(xpos, ypos)).rgb;
}
// Code for first pass - horizontal
inline half3 getLine(float ypos, float4 xpos, half4 linetaps)
{
return
pixel(xpos.r, ypos) * linetaps.r +
pixel(xpos.g, ypos) * linetaps.g +
pixel(xpos.b, ypos) * linetaps.b +
pixel(xpos.a, ypos) * linetaps.a;
}
float4 CONVOLUTION4x4Horiz(in float2 TextureUV : TEXCOORD0) : SV_TARGET
{
float2 f = frac(TextureUV / g_StepXY.xy + 0.5);
half4 linetaps = weight(1.0 - f.x);
// kernel generation code made sure taps add up to 1, no need to adjust here.
float xystart = (-1.0 - f.x) * g_StepXY.x + TextureUV.x;
float4 xpos = xystart + g_StepXY.x * float4(0.0, 1.0, 2.0, 3.0);
return float4(getLine(TextureUV.y, xpos, linetaps), 1.0f);
}
// Code for second pass - vertical
inline half3 getRow(float xpos, float4 ypos, half4 columntaps)
{
return
pixel(xpos, ypos.r) * columntaps.r +
pixel(xpos, ypos.g) * columntaps.g +
pixel(xpos, ypos.b) * columntaps.b +
pixel(xpos, ypos.a) * columntaps.a;
}
float4 CONVOLUTION4x4Vert(in float2 TextureUV : TEXCOORD0) : SV_TARGET
{
float2 f = frac(TextureUV / g_StepXY.zw + 0.5);
half4 columntaps = weight(1.0 - f.y);
// kernel generation code made sure taps add up to 1, no need to adjust here.
float xystart = (-1.0 - f.y) * g_StepXY.w + TextureUV.y;
float4 ypos = xystart + g_StepXY.w * float4(0.0, 1.0, 2.0, 3.0);
return output(g_colorRange.x + g_colorRange.y * saturate(getRow(TextureUV.x, ypos, columntaps)), TextureUV);
}
technique11 SCALER_T
{
pass P0
{
SetVertexShader( VS_SHADER );
SetPixelShader( CompileShader( ps_4_0_level_9_3, CONVOLUTION4x4Horiz() ) );
}
pass P1
{
SetVertexShader( VS_SHADER );
SetPixelShader( CompileShader( ps_4_0_level_9_3, CONVOLUTION4x4Vert() ) );
}
};
|
