GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions 7 Packages Projects Releases Wiki Activity

Fix initial irradiance update for scrolled probes

Browse Source
This commit is contained in:
Wojciech Figat
2022-06-13 13:59:01 +02:00
parent ca0c3eb7d6
commit e96e6bea86
1 changed files with 22 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
Source/Shaders/GI/DDGI.shader
View File

@@ -236,33 +236,8 @@ void CS_UpdateProbes(uint3 GroupThreadId : SV_GroupThreadID, uint3 GroupId : SV_
probeCoords = GetDDGIProbeCoords(DDGI, probeIndex);
uint2 outputCoords = GetDDGIProbeTexelCoords(DDGI, CascadeIndex, probeIndex) * (DDGI_PROBE_RESOLUTION + 2) + 1 + GroupThreadId.xy;
// Clear probes that have been scrolled to a new positions (blending with current irradiance will happen the next frame)
int3 probesScrollOffsets = DDGI.ProbesScrollOffsets[CascadeIndex].xyz;
int probeScrollClear = DDGI.ProbesScrollOffsets[CascadeIndex].w;
int3 probeScrollDirections = DDGI.ProbeScrollDirections[CascadeIndex].xyz;
bool skip = false;
UNROLL
for (uint planeIndex = 0; planeIndex < 3; planeIndex++)
{
if (probeScrollClear & (1 << planeIndex))
{
int scrollOffset = probesScrollOffsets[planeIndex];
int scrollDirection = probeScrollDirections[planeIndex];
uint probeCount = DDGI.ProbesCounts[planeIndex];
uint coord = (probeCount + (scrollDirection ? (scrollOffset - 1) : (scrollOffset % probeCount))) % probeCount;
if (probeCoords[planeIndex] == coord)
{
skip = true;
}
}
}
if (skip)
{
// Clear scrolled probe
RWOutput[outputCoords] = float4(0, 0, 0, 0);
}
// Skip disabled probes
bool skip = false;
float probeState = LoadDDGIProbeState(DDGI, ProbesState, CascadeIndex, probeIndex);
if (probeState == DDGI_PROBE_STATE_INACTIVE)
skip = true;
@@ -284,6 +259,27 @@ void CS_UpdateProbes(uint3 GroupThreadId : SV_GroupThreadID, uint3 GroupId : SV_
if (skip)
return;
// Clear probes that have been scrolled to a new positions
int3 probesScrollOffsets = DDGI.ProbesScrollOffsets[CascadeIndex].xyz;
int probeScrollClear = DDGI.ProbesScrollOffsets[CascadeIndex].w;
int3 probeScrollDirections = DDGI.ProbeScrollDirections[CascadeIndex].xyz;
UNROLL
for (uint planeIndex = 0; planeIndex < 3; planeIndex++)
{
if (probeScrollClear & (1 << planeIndex))
{
int scrollOffset = probesScrollOffsets[planeIndex];
int scrollDirection = probeScrollDirections[planeIndex];
uint probeCount = DDGI.ProbesCounts[planeIndex];
uint coord = (probeCount + (scrollDirection ? (scrollOffset - 1) : (scrollOffset % probeCount))) % probeCount;
if (probeCoords[planeIndex] == coord)
{
RWOutput[outputCoords] = float4(0, 0, 0, 0);
break;
}
}
}
// Calculate octahedral projection for probe (unwraps spherical projection into a square)
float2 octahedralCoords = GetOctahedralCoords(GroupThreadId.xy, DDGI_PROBE_RESOLUTION);
float3 octahedralDirection = GetOctahedralDirection(octahedralCoords);