#version 420
#extension GL_ARB_texture_gather : enable
// shader f0a615c0f6a37661 // vertical blur 5760 for reflections on shrine walls, floors and probably other
uniform ivec4 uf_remappedPS[1];
layout(binding = 0) uniform sampler2D textureUnitPS0;// Tex0 addr 0xf51d3000 res 320x180x1 dim 1 tm: 4 format 001a compSel: 0 1 2 3 mipView: 0x0 (num 0x1) sliceView: 0x0 (num 0x1) Sampler0 ClampX/Y/Z: 2 2 2 border: 1
layout(location = 0) in vec4 passParameterSem0;
layout(location = 1) in vec4 passParameterSem1;
layout(location = 0) out vec4 passPixelColor0;
uniform vec2 uf_fragCoordScale;

float data = passParameterSem0.z - passParameterSem0.w;
float h = data / 1.38461538 * uf_fragCoordScale.y;

uniform float o_weight[] = float[]( 0.29411765, 0.35294118 );
uniform float o_offset[] = float[]( 0.00000000, 1.33333333 );

uniform float weight[] = float[]( 0.05842515, 0.11378184, 0.10229613, 0.08445599, 0.06401931, 0.04454418, 0.02843975, 0.01665463, 0.00894132, 0.00439816, 0.00198084, 0.00081621, 0.00030743, 0.00010575, 0.00003318, 0.00000949, 0.00000247, 0.00000058, 0.00000013, 0.00000002 );
uniform float offset[] = float[]( 0.00000000, 1.49197861, 3.48128342, 5.47058824, 7.45989305, 9.44919786, 11.43850267, 13.42780749, 15.41711230, 17.40641711, 19.39572193, 21.38502674, 23.37433155, 25.36363636, 27.35294118, 29.34224599, 31.33155080, 33.32085561, 35.31016043, 37.29946524 );

float mul_nonIEEE(float a, float b){ if( a == 0.0 || b == 0.0 ) return 0.0; return a*b; }

void main()
{
vec2 R0f = vec2(passParameterSem0.x, passParameterSem0.w);

vec4 R1f = texture( textureUnitPS0, R0f ) * weight[0];
for (int i=1; i<20; i++) {
	R1f += texture( textureUnitPS0, R0f + vec2(0.0, offset[i]*h) ) * weight[i];
	R1f += texture( textureUnitPS0, R0f - vec2(0.0, offset[i]*h) ) * weight[i];
	}

vec4 R2f = texture( textureUnitPS0, R0f ) * o_weight[0];
for (int i=1; i<2; i++) {
	R2f += texture( textureUnitPS0, R0f + vec2(0.0, o_offset[i]*h) ) * o_weight[i];
	R2f += texture( textureUnitPS0, R0f - vec2(0.0, o_offset[i]*h) ) * o_weight[i];
	}

passPixelColor0 = ( (uf_fragCoordScale.y == 1.0) ? R2f : R1f );

//alpha boost and clamp, according to original shader
passPixelColor0.w = mul_nonIEEE(intBitsToFloat(uf_remappedPS[0].x), passPixelColor0.w);
passPixelColor0.w = clamp(passPixelColor0.w, 0.0, 1.0);
}