mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-24 01:26:33 +00:00
88 lines
2.3 KiB
Plaintext
88 lines
2.3 KiB
Plaintext
/*
|
|
Author: Themaister
|
|
License: Public domain
|
|
*/
|
|
|
|
/* 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;
|
|
};
|
|
|
|
float3 quad_inter(float3 x0, float3 x1, float3 x2, float x)
|
|
{
|
|
float3 poly[3];
|
|
poly[2] = 0.5*x0 - x1 + 0.5*x2;
|
|
poly[1] = -1.5*x0 + 2.0*x1 - 0.5*x2;
|
|
poly[0] = x0;
|
|
return poly[2] * x * x + poly[1] * x + poly[0];
|
|
}
|
|
|
|
output main_fragment (float2 tex : TEXCOORD0, uniform input IN, uniform sampler2D s0 : TEXUNIT0)
|
|
{
|
|
float2 texsize = IN.texture_size;
|
|
float sharpness = 2.0;
|
|
float dx = float(pow(sharpness * texsize.x, -1.0));
|
|
float dy = float(pow(sharpness * texsize.y, -1.0));
|
|
|
|
float3 c00 = tex2D(s0, tex + float2(-dx, -dy)).xyz;
|
|
float3 c01 = tex2D(s0, tex + float2(-dx, 0)).xyz;
|
|
float3 c02 = tex2D(s0, tex + float2(-dx, dy)).xyz;
|
|
float3 c10 = tex2D(s0, tex + float2(0, -dy)).xyz;
|
|
float3 c11 = tex2D(s0, tex + float2(0, 0)).xyz;
|
|
float3 c12 = tex2D(s0, tex + float2(0, dy)).xyz;
|
|
float3 c20 = tex2D(s0, tex + float2(dx, -dy)).xyz;
|
|
float3 c21 = tex2D(s0, tex + float2(dx, 0)).xyz;
|
|
float3 c22 = tex2D(s0, tex + float2(dx, dy)).xyz;
|
|
|
|
float frac_amt_x = frac(tex.x * texsize.x);
|
|
float frac_amt_y = frac(tex.y * texsize.y);
|
|
float3 loval = quad_inter(c00, c10, c20, frac_amt_x + 0.5);
|
|
float3 midval = quad_inter(c01, c11, c21, frac_amt_x + 0.5);
|
|
float3 hival = quad_inter(c02, c12, c22, frac_amt_x + 0.5);
|
|
float3 res = quad_inter(loval, midval, hival, frac_amt_y + 0.5);
|
|
|
|
output OUT;
|
|
|
|
// Bilinear!
|
|
// float3 first = lerp(c00, c20, frac(tex.x * texsize.x + 0.5));
|
|
// float3 second = lerp(c02, c22, frac(tex.x * texsize.x + 0.5));
|
|
// float3 res = lerp(first, second, frac(tex.y * texsize.y + 0.5));
|
|
// OUT.color = float4(res, 1.0);
|
|
|
|
|
|
OUT.color = float4(res, 1.0);
|
|
return OUT;
|
|
}
|
|
|