private void Update()
{
if (_lpvTex3D.r != null && _lpvTex3D.r.width != lpvGridResolution)
{
DestroyTargets();
}
if (_lpvTex3D.r == null)
{
if (lpvGridResolution == 0)
{
return;
}
_tex3d_accum = CreateTarget();
_tex3d_gv = CreateTex3dGV();
_lpvTex3D_prev = CreateShRGB();
_lpvTex3D = CreateShRGB();
}
_tex3d_gv.Create();
if (!GetComponent <RSMTest>().UpdateShadowsFull(out RenderTexture shadow_texture,
out RenderTexture shadow_texture_color,
out Matrix4x4 world_to_light_local_matrix,
_tex3d_gv))
{
return;
}
_lpvTex3D.Create();
_tex3d_accum.Create();
lpvCompute.SetInt("GridResolution", lpvGridResolution);
lpvCompute.SetMatrix("WorldToLightLocalMatrix", world_to_light_local_matrix);
int clear_kernel = lpvCompute.FindKernel("ClearKernel");
SetShRGBTextures(clear_kernel, "", _lpvTex3D);
lpvCompute.SetTexture(clear_kernel, "LPV_accum", _tex3d_accum);
int thread_groups = (lpvGridResolution + 3) / 4;
lpvCompute.Dispatch(clear_kernel, thread_groups, thread_groups, thread_groups);
#if false
GetInitialBorderColor(out var border_sh_r, out var border_sh_g, out var border_sh_b);
int border_kernel = lpvCompute.FindKernel("BorderKernel");
SetShRGBTextures(border_kernel, "", _lpvTex3D);
//SetShRGBTextures(border_kernel, "_accum", _lpvTex3D_accum);
lpvCompute.SetVector("LPV_sh_r", border_sh_r);
lpvCompute.SetVector("LPV_sh_g", border_sh_g);
lpvCompute.SetVector("LPV_sh_b", border_sh_b);
thread_groups = (lpvGridResolution + 7) / 8;
lpvCompute.Dispatch(border_kernel, thread_groups, thread_groups, 1);
#endif
int inject_kernel = lpvCompute.FindKernel("InjectKernel");
SetShRGBTextures(inject_kernel, "", _lpvTex3D);
lpvCompute.SetTexture(inject_kernel, "ShadowTexture", shadow_texture);
lpvCompute.SetTexture(inject_kernel, "ShadowTextureColor", shadow_texture_color);
thread_groups = (lpvGridResolution + 7) / 8;
lpvCompute.Dispatch(inject_kernel, thread_groups, thread_groups, 1);
shadow_texture.Release();
shadow_texture_color.Release();
int propagate_step_kernel = lpvCompute.FindKernel("PropagateStepKernel");
lpvCompute.SetTexture(propagate_step_kernel, "LPV_accum", _tex3d_accum);
lpvCompute.SetTexture(propagate_step_kernel, "LPV_gv", _tex3d_gv);
thread_groups = (lpvGridResolution + 3) / 4;
_lpvTex3D_prev.Create();
for (int i = 0; i < propagateSteps; i++)
{
Swap(ref _lpvTex3D_prev, ref _lpvTex3D);
SetShRGBTextures(propagate_step_kernel, "_prev", _lpvTex3D_prev);
SetShRGBTextures(propagate_step_kernel, "", _lpvTex3D);
lpvCompute.SetInt("PropagationStep", i);
lpvCompute.Dispatch(propagate_step_kernel, thread_groups, thread_groups, thread_groups);
}
_lpvTex3D_prev.Release();
_lpvTex3D.Release();
int clear_border_kernel = lpvCompute.FindKernel("ClearBorderKernel");
lpvCompute.SetTexture(clear_border_kernel, "LPV_accum", _tex3d_accum);
thread_groups = (lpvGridResolution + 7) / 8;
lpvCompute.Dispatch(clear_border_kernel, thread_groups, thread_groups, thread_groups);
Shader.SetGlobalTexture("_LPV_accum", _tex3d_accum);
Shader.SetGlobalFloat("_LPV_GridCellSize", lpvGridCellSize);
if (!drawGizmosGV)
{
_tex3d_gv.Release();
}
}
void DestroyTarget(ref ShRGB sh)
{
DestroyTarget(ref sh.r);
DestroyTarget(ref sh.g);
DestroyTarget(ref sh.b);
}
void SetShRGBTextures(int kernel, string suffix, ShRGB sh)
{
lpvCompute.SetTexture(kernel, "LPV_r" + suffix, sh.r);
lpvCompute.SetTexture(kernel, "LPV_g" + suffix, sh.g);
lpvCompute.SetTexture(kernel, "LPV_b" + suffix, sh.b);
}
