61 lines
No EOL
2.1 KiB
HLSL
61 lines
No EOL
2.1 KiB
HLSL
#include "cast.hlsl"
|
|
#include "ao.hlsl"
|
|
#include "normal.hlsl"
|
|
#include "shading.hlsl"
|
|
#include "fog.hlsl"
|
|
|
|
/*
|
|
contributors: Inigo Quiles
|
|
description: Default raymarching renderer
|
|
use:
|
|
- <float4> raymarchDefaultRender( in <float3> rayOriging, in <float3> rayDirection, in <float3> cameraForward)
|
|
- <float4> raymarchDefaultRender( in <float3> rayOriging, in <float3> rayDirection, in <float3> cameraForward, out <float> eyeDepth )
|
|
- <float4> raymarchDefaultRender( in <float3> rayOriging, in <float3> rayDirection, in <float3> cameraForward, out <float> eyeDepth, out <Material> res )
|
|
- <float4> raymarchDefaultRender( in <float3> rayOriging, in <float3> rayDirection, in <float3> cameraForward, out <float3> eyeDepth, out <float3> worldPosition, out <float3> worldNormal )
|
|
options:
|
|
- RAYMARCH_BACKGROUND: float3(0.0, 0.0, 0.0)
|
|
- RAYMARCH_AOV: return AOVs in a Material structure
|
|
*/
|
|
|
|
|
|
#ifndef RAYMARCH_BACKGROUND
|
|
#define RAYMARCH_BACKGROUND float3(0.0, 0.0, 0.0)
|
|
#endif
|
|
|
|
#ifndef FNC_RAYMARCH_DEFAULT
|
|
#define FNC_RAYMARCH_DEFAULT
|
|
|
|
float4 raymarchDefaultRender(in float3 rayOrigin, in float3 rayDirection, float3 cameraForward,
|
|
out float dist, out float eyeDepth, out Material res) {
|
|
|
|
res = raymarchCast(rayOrigin, rayDirection);
|
|
float t = res.sdf;
|
|
float3 worldPos = rayOrigin + t * rayDirection;
|
|
float3 worldNormal = raymarchNormal( worldPos );
|
|
|
|
float4 color = float4(RAYMARCH_BACKGROUND, 0.0);
|
|
if (res.valid) {
|
|
res.position = worldPos;
|
|
res.normal = worldNormal;
|
|
res.ambientOcclusion = raymarchAO(res.position, res.normal);
|
|
ShadingData shadingData = shadingDataNew();
|
|
shadingData.V = -rayDirection;
|
|
color = RAYMARCH_SHADING_FNC(res, shadingData);
|
|
dist = t;
|
|
}
|
|
else {
|
|
dist = RAYMARCH_MAX_DIST;
|
|
}
|
|
color.rgb = raymarchFog(color.rgb, t, rayOrigin, rayDirection);
|
|
|
|
#if defined(RAYMARCH_AOV)
|
|
// Eye-space depth. See https://www.shadertoy.com/view/4tByz3
|
|
eyeDepth = t * dot(rayDirection, cameraForward);
|
|
#else
|
|
eyeDepth = 0.0;
|
|
#endif
|
|
|
|
return color;
|
|
}
|
|
|
|
#endif |