mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 18:23:45 +00:00
95 lines
2.3 KiB
Plaintext
95 lines
2.3 KiB
Plaintext
/*
|
|
|
|
Copyright (C) 2007 guest(r) - guest.r@gmail.com
|
|
|
|
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
|
|
of the License, 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 this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
/*
|
|
|
|
The 2xSaL shader processes a gfx. surface and redraws it 2x finer.
|
|
|
|
A linear post-resize can fit the image to any resolution.
|
|
|
|
Note: set scaler to normal2x.
|
|
|
|
*/
|
|
|
|
/* Default Vertex shader */
|
|
void main_vertex
|
|
(
|
|
float4 position : POSITION,
|
|
float4 color : COLOR,
|
|
float2 texCoord : TEXCOORD0,
|
|
|
|
uniform float4x4 modelViewProj,
|
|
|
|
out float4 oPosition : POSITION,
|
|
out float4 oColor : COLOR,
|
|
out float2 otexCoord : TEXCOORD
|
|
)
|
|
{
|
|
oPosition = mul(modelViewProj, position);
|
|
oColor = color;
|
|
otexCoord = texCoord;
|
|
}
|
|
|
|
struct output
|
|
{
|
|
float4 color : COLOR;
|
|
};
|
|
|
|
struct input
|
|
{
|
|
float2 video_size;
|
|
float2 texture_size;
|
|
float2 output_size;
|
|
};
|
|
|
|
struct deltas
|
|
{
|
|
float2 UL, UR, DL, DR;
|
|
};
|
|
|
|
|
|
output main_fragment (float2 tex : TEXCOORD0, uniform input IN, uniform sampler2D s_p : TEXUNIT0)
|
|
{
|
|
float2 texsize = IN.texture_size;
|
|
float dx = pow(texsize.x, -1.0) * 0.25;
|
|
float dy = pow(texsize.y, -1.0) * 0.25;
|
|
float3 dt = float3(1.0, 1.0, 1.0);
|
|
|
|
deltas VAR = {
|
|
tex + float2(-dx, -dy),
|
|
tex + float2(dx, -dy),
|
|
tex + float2(-dx, dy),
|
|
tex + float2(dx, dy)
|
|
};
|
|
|
|
float3 c00 = tex2D(s_p, VAR.UL).xyz;
|
|
float3 c20 = tex2D(s_p, VAR.UR).xyz;
|
|
float3 c02 = tex2D(s_p, VAR.DL).xyz;
|
|
float3 c22 = tex2D(s_p, VAR.DR).xyz;
|
|
|
|
float m1=dot(abs(c00-c22),dt)+0.001;
|
|
float m2=dot(abs(c02-c20),dt)+0.001;
|
|
|
|
output OUT;
|
|
OUT.color = float4((m1*(c02+c20)+m2*(c22+c00))/(2.0*(m1+m2)),1.0);
|
|
return OUT;
|
|
}
|
|
|