// $MinimumShaderProfile: ps_3_0
/* --- Settings --- */
#define HDRPower 1.12 //[0.00 to 8.00] Strangely lowering this makes the image brighter
#define radius2 0.690 //[0.00 to 5.00] Raising this seems to make the effect stronger and also brighter
/* --- Defining Constants --- */
#define myTex2D(s,p) tex2D(s,p)
#ifndef s0
sampler s0 : register(s0);
#define s1 s0
//sampler s1 : register(s1);
float4 p0 : register(c0);
float4 p1 : register(c1);
// #define width (p0[0])
// #define height (p0[1])
// #define counter (p0[2])
// #define clock (p0[3])
// #define px (p1[0]) //one_over_width
// #define py (p1[1]) //one_over_height
#define px (p1.x) //one_over_width
#define py (p1.y) //one_over_height
#define screen_size float2(p0.x,p0.y)
#define pixel float2(px,py)
//#define pxy float2(p1.xy)
//#define PI acos(-1)
#endif
/* --- Main code --- */
/*------------------------------------------------------------------------------
HDR
------------------------------------------------------------------------------*/
float4 HDRPass( float4 colorInput, float2 Tex )
{
float3 c_center = myTex2D(s0, Tex).rgb; //reuse SMAA center sample or lumasharpen center sample?
//float3 c_center = colorInput.rgb; //or just the input?
//float3 bloom_sum1 = float3(0.0, 0.0, 0.0); //don't initialize to 0 - use the first tex2D to do that
//float3 bloom_sum2 = float3(0.0, 0.0, 0.0); //don't initialize to 0 - use the first tex2D to do that
//Tex += float2(0, 0); // +0 ? .. oh riiiight - that will surely do something useful
float radius1 = 0.7;
float3 bloom_sum1 = myTex2D(s0, Tex + float2(1.5, -1.5) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(-1.5, -1.5) * radius1).rgb; //rearrange sample order to minimize ALU and maximize cache usage
bloom_sum1 += myTex2D(s0, Tex + float2(1.5, 1.5) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(-1.5, 1.5) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(0, -2.5) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(0, 2.5) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(-2.5, 0) * radius1).rgb;
bloom_sum1 += myTex2D(s0, Tex + float2(2.5, 0) * radius1).rgb;
bloom_sum1 *= 0.01;
float3 bloom_sum2 = myTex2D(s0, Tex + float2(1.5, -1.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(-1.5, -1.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(1.5, 1.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(-1.5, 1.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(0, -2.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(0, 2.5) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(-2.5, 0) * radius2).rgb;
bloom_sum2 += myTex2D(s0, Tex + float2(2.5, 0) * radius2).rgb;
bloom_sum2 *= 0.025;
float dist = radius2 - radius1;
float3 HDR = (c_center + (bloom_sum2 - bloom_sum1)) * dist;
float3 blend = HDR + colorInput.rgb;
colorInput.rgb = HDR + pow(blend, HDRPower); // pow - don't use fractions for HDRpower
return saturate(colorInput);
}
/* --- Main --- */
float4 main(float2 tex : TEXCOORD0) : COLOR {
float4 c0 = tex2D(s0, tex);
c0 = HDRPass(c0, tex);
return c0;
}
