47 lines
1.0 KiB
HLSL
47 lines
1.0 KiB
HLSL
//regular sky shader for scrolling q1 skies
|
|
//the sky surfaces are thrown through this as-is.
|
|
|
|
struct a2v
|
|
{
|
|
float4 pos: POSITION;
|
|
float2 tc: TEXCOORD0;
|
|
};
|
|
struct v2f
|
|
{
|
|
float4 pos: SV_POSITION;
|
|
float2 tc: TEXCOORD0;
|
|
float3 mpos: TEXCOORD1;
|
|
};
|
|
|
|
#include <ftedefs.h>
|
|
|
|
#ifdef VERTEX_SHADER
|
|
v2f main (a2v inp)
|
|
{
|
|
v2f outp;
|
|
outp.pos = mul(m_model, inp.pos);
|
|
outp.mpos = outp.pos.xyz;
|
|
outp.pos = mul(m_view, outp.pos);
|
|
outp.pos = mul(m_projection, outp.pos);
|
|
outp.tc = inp.tc;
|
|
return outp;
|
|
}
|
|
#endif
|
|
|
|
#ifdef FRAGMENT_SHADER
|
|
Texture2D shaderTexture[2];
|
|
SamplerState SampleType;
|
|
|
|
float4 main (v2f inp) : SV_TARGET
|
|
{
|
|
float2 tccoord;
|
|
float3 dir = inp.mpos - v_eyepos;
|
|
dir.z *= 3.0;
|
|
dir.xy /= 0.5*length(dir);
|
|
tccoord = (dir.xy + e_time*0.03125);
|
|
float4 solid = shaderTexture[0].Sample(SampleType, tccoord);
|
|
tccoord = (dir.xy + e_time*0.0625);
|
|
float4 clouds = shaderTexture[1].Sample(SampleType, tccoord);
|
|
return (solid*(1.0-clouds.a)) + (clouds.a*clouds);
|
|
}
|
|
#endif |