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EEVEE-Next: Irradiance Grid smooth transitions #112842

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Miguel Pozo merged 10 commits from pragma37/blender:pull-eevee-next-irradiance-grid-smooth-transitions into main 2023-12-18 16:25:29 +01:00
Conversation 0 Commits 10 Files Changed 7 +46 -9
Miguel Pozo commented 2023-09-25 13:15:36 +02:00
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Smooth the transition at grid bounds.

Before After
Clipboard - 20 de septiembre de 2023 17 48 Clipboard - 20 de septiembre de 2023 17 48-1

The transition size is fixed at 1 grid cell, but it may be useful to expose a user setting for controlling this (?).

Smooth the transition at grid bounds. | Before | After | |---|---| | ![Clipboard - 20 de septiembre de 2023 17 48](/attachments/428373fc-fd4a-4e0c-ae24-46e430b5cab7) | ![Clipboard - 20 de septiembre de 2023 17 48-1](/attachments/c27e2785-05ec-4eca-b789-57c500142ae4) | The transition size is fixed at 1 grid cell, but it may be useful to expose a user setting for controlling this (?).
Clipboard - 20 de septiembre de 2023 17 48.png
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Clipboard - 20 de septiembre de 2023 17 48-1.png
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Miguel Pozo added the
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Miguel Pozo added 1 commit 2023-09-25 13:15:45 +02:00
Miguel Pozo requested review from Clément Foucault 2023-09-25 13:16:00 +02:00
Clément Foucault requested changes 2023-09-26 13:49:22 +02:00
source/blender/draw/engines/eevee_next/shaders/eevee_lightprobe_eval_lib.glsl Outdated
@ -125,0 +139,4 @@
index = i;
#ifndef IRRADIANCE_GRID_UPLOAD
float distance_to_border = min_v3(min(lP, vec3(grids_infos_buf[i].grid_size) - lP));
float noise = utility_tx_fetch(utility_tx, UTIL_TEXEL, UTIL_BLUE_NOISE_LAYER).x;
Clément Foucault commented 2023-09-26 13:47:55 +02:00
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I don't think a blue noise fetch here is acceptable for performance reason. Use Interlieved Gradient Noise.

I don't think a blue noise fetch here is acceptable for performance reason. Use Interlieved Gradient Noise.
pragma37 marked this conversation as resolved
source/blender/draw/engines/eevee_next/shaders/eevee_lightprobe_eval_lib.glsl Outdated
@ -125,0 +140,4 @@
#ifndef IRRADIANCE_GRID_UPLOAD
float distance_to_border = min_v3(min(lP, vec3(grids_infos_buf[i].grid_size) - lP));
float noise = utility_tx_fetch(utility_tx, UTIL_TEXEL, UTIL_BLUE_NOISE_LAYER).x;
if (distance_to_border < fract(noise + sampling_rng_1D_get(SAMPLING_VOLUME_U))) {
Clément Foucault commented 2023-09-26 13:48:08 +02:00
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There is a SAMPLING_LIGHTPROBE for that.

There is a `SAMPLING_LIGHTPROBE` for that.
pragma37 marked this conversation as resolved
Miguel Pozo added 3 commits 2023-10-09 17:52:04 +02:00
Clément Foucault approved these changes 2023-10-09 17:58:42 +02:00
Clément Foucault requested changes 2023-10-10 14:46:24 +02:00
source/blender/draw/engines/eevee_next/shaders/eevee_lightprobe_eval_lib.glsl Outdated
@ -141,0 +147,4 @@
index = i;
#ifdef SAMPLING_LIGHTPROBE
float distance_to_border = min_v3(min(lP, vec3(grids_infos_buf[i].grid_size) - lP));
float noise = interlieved_gradient_noise(
Clément Foucault commented 2023-10-10 14:46:04 +02:00
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Move this out of the loop. We don't want to evaluate this Nth time.

Move this out of the loop. We don't want to evaluate this Nth time.
Miguel Pozo commented 2023-11-24 18:54:08 +01:00
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I've simplified the loop part a bit, but I don't know how to move the interlieved_gradient_noise call out of the loop without decreasing quality.
This is only computed on the volume edges, I don't think the function is that costly?

I've simplified the loop part a bit, but I don't know how to move the interlieved_gradient_noise call out of the loop without decreasing quality. This is only computed on the volume edges, I don't think the function is that costly?
Clément Foucault commented 2023-11-25 17:53:19 +01:00
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Use same mechanism as closure_select.

Use same mechanism as `closure_select`.
Clément Foucault added the
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Miguel Pozo added 3 commits 2023-11-24 18:42:17 +01:00
Miguel Pozo requested review from Clément Foucault 2023-11-24 18:54:23 +01:00
Clément Foucault requested changes 2023-11-25 17:56:42 +01:00
Clément Foucault left a comment
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Use same mechanism as closure_select for avoiding recomputing the random value.
Also it is evaluated for each fragment for transparent surfaces so the cost of this matters quite a bit.

Use same mechanism as `closure_select` for avoiding recomputing the random value. Also it is evaluated for each fragment for transparent surfaces so the cost of this matters quite a bit.
Miguel Pozo added 2 commits 2023-11-29 16:36:35 +01:00
Clément Foucault approved these changes 2023-12-01 14:42:35 +01:00
Miguel Pozo added 1 commit 2023-12-18 16:23:55 +01:00
Miguel Pozo merged commit 97785b6fbb into main 2023-12-18 16:25:29 +01:00
Miguel Pozo deleted branch pull-eevee-next-irradiance-grid-smooth-transitions 2023-12-18 16:25:31 +01:00
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