Hello there,
I have a very weird problem where I really doubt wether Im seeing things clearly, so please have a look if Im doing something obviously wrong here.
So, I got a scene rendered to the backbuffer, I stretchrect it to a 4 times smaller texture.
Now I apply a brightpass, rendering to a new texture of the same size:
So, now I'll apply the following gaussian blur, as found on many sources on the internet, to blur the texture, in order for the highlighted parts to shine over the X-Wings front. Only that it does the exact opposite, it actually blurs inwards:
float g_blurRadiusX;
float g_blurRadiusY;
static const int kernelSize = 9;
//Blur Weights
static const float BlurWeights[kernelSize] =
{
0.05f,
0.09f,
0.12f,
0.15f,
0.16f,
0.15f,
0.12f,
0.09f,
0.05f
};
float4 BlurH_PS( VS_OUTPUT In ) : COLOR0
{
float4 color = 0;
float2 texCoord = In.TextureUV;
for (int i = 0; i < kernelSize; i++)
{
texCoord.x = In.TextureUV.x + ((i-4)*g_blurRadiusX);
color += tex2D(Tex0Sampler, texCoord) * BlurWeights;
}
return color;
}
float4 BlurV_PS( VS_OUTPUT In ) : COLOR0
{
float4 color = 0;
float2 texCoord = In.TextureUV;
for (int i = 0; i < kernelSize; i++)
{
texCoord.y = In.TextureUV.y + ((i-4)*g_blurRadiusY);
color += tex2D(Tex0Sampler, texCoord) * BlurWeights;
}
return color;
}
(blurRadiusX is 1/TexWidth and so on)
Anybody might have any idea on whats going on here?
A note: After I rendered the brightpass, I use the downsample texture as a rendertarget, and so on. So I dont always create a new texture, but reuse the old ones, after Clearing them with 0 0 0 0.
