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EEVEE-Next: Rework interactive sampling

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This allow multiple effect to require different
amount of samples for interactive mode.
This commit is contained in:
Clément Foucault 2023-07-12 19:02:17 +02:00
parent 12d7f8e7c1
commit 1f1c39b980
2 changed files with 5 additions and 3 deletions
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5
source/blender/draw/engines/eevee_next/eevee_sampling.cc
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@ -81,7 +81,7 @@ void Sampling::end_sync()
sample_ = viewport_sample_;
}
else if (interactive_mode_) {
int interactive_sample_count = min_ii(interactive_sample_max_, sample_count_);
int interactive_sample_count = interactive_sample_max_;
if (viewport_sample_ < interactive_sample_count) {
/* Loop over the same starting samples. */
@ -98,12 +98,13 @@ void Sampling::end_sync()
void Sampling::step()
{
{
uint64_t sample_filter = sample_ % interactive_sample_aa_;
/* TODO(fclem) we could use some persistent states to speedup the computation. */
double2 r, offset = {0, 0};
/* Using 2,3 primes as per UE4 Temporal AA presentation.
* http://advances.realtimerendering.com/s2014/epic/TemporalAA.pptx (slide 14) */
uint2 primes = {2, 3};
BLI_halton_2d(primes, offset, sample_ + 1, r);
BLI_halton_2d(primes, offset, sample_filter + 1, r);
/* WORKAROUND: We offset the distribution to make the first sample (0,0). This way, we are
* assured that at least one of the samples inside the TAA rotation will match the one from the
* draw manager. This makes sure overlays are correctly composited in static scene. */

3
source/blender/draw/engines/eevee_next/eevee_sampling.hh
View File

@ -31,7 +31,8 @@ class Sampling {
/* High number of sample for viewport infinite rendering. */
static constexpr uint64_t infinite_sample_count_ = 0xFFFFFFu;
/* During interactive rendering, loop over the first few samples. */
static constexpr uint64_t interactive_sample_max_ = 8;
static constexpr uint64_t interactive_sample_aa_ = 8;
static constexpr uint64_t interactive_sample_max_ = interactive_sample_aa_;
/** 0 based current sample. Might not increase sequentially in viewport. */
uint64_t sample_ = 0;