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Improve cubemap importance sampling

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This commit is contained in:
clayjohn
2020-02-29 17:16:50 -08:00
parent f3c7019177
commit 6bb5117955
5 changed files with 76 additions and 92 deletions
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60
servers/visual/rasterizer_rd/rasterizer_scene_rd.cpp
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@@ -146,9 +146,7 @@ void RasterizerSceneRD::_create_reflection_from_panorama(ReflectionData &rd, RID
if (p_quality) {
//render directly to the layers
for (int i = 0; i < rd.layers.size(); i++) {
for (int j = 0; j < 6; j++) {
storage->get_effects()->cubemap_roughness(p_panorama, true, rd.layers[i].mipmaps[0].framebuffers[j], j, sky_ggx_samples_quality, float(i) / (rd.layers.size() - 1.0));
}
storage->get_effects()->cubemap_roughness(p_panorama, true, rd.layers[i].views[0], 10, sky_ggx_samples_quality, float(i) / (rd.layers.size() - 1.0), rd.layers[i].mipmaps[0].size.x);
}
} else {
// Use fast filtering. Render directly to base mip levels
@@ -169,9 +167,7 @@ void RasterizerSceneRD::_create_reflection_from_panorama(ReflectionData &rd, RID
if (p_quality) {
//render directly to the layers
for (int i = 0; i < rd.layers[0].mipmaps.size(); i++) {
for (int j = 0; j < 6; j++) {
storage->get_effects()->cubemap_roughness(p_panorama, true, rd.layers[0].mipmaps[i].framebuffers[j], j, sky_ggx_samples_quality, float(i) / (rd.layers[0].mipmaps.size() - 1.0));
}
storage->get_effects()->cubemap_roughness(p_panorama, true, rd.layers[0].views[i], 10, sky_ggx_samples_quality, float(i) / (rd.layers[0].mipmaps.size() - 1.0), rd.layers[0].mipmaps[i].size.x);
}
} else {
// Use fast filtering. Render directly to each mip level
@@ -185,15 +181,13 @@ void RasterizerSceneRD::_create_reflection_from_panorama(ReflectionData &rd, RID
}
}
void RasterizerSceneRD::_create_reflection_from_base_mipmap(ReflectionData &rd, bool p_use_arrays, bool p_quality, int p_cube_side) {
void RasterizerSceneRD::_create_reflection_from_base_mipmap(ReflectionData &rd, bool p_use_arrays, bool p_quality, int p_cube_side, int p_base_layer) {
if (p_use_arrays) {
if (p_quality) {
//render directly to the layers
for (int i = 1; i < rd.layers.size(); i++) {
storage->get_effects()->cubemap_roughness(rd.radiance_base_cubemap, false, rd.layers[i].mipmaps[0].framebuffers[p_cube_side], p_cube_side, sky_ggx_samples_quality, float(i) / (rd.layers.size() - 1.0));
}
storage->get_effects()->cubemap_roughness(rd.radiance_base_cubemap, false, rd.layers[p_base_layer].views[0], p_cube_side, sky_ggx_samples_quality, float(p_base_layer) / (rd.layers.size() - 1.0), rd.layers[p_base_layer].mipmaps[0].size.x);
} else {
storage->get_effects()->cubemap_downsample(rd.radiance_base_cubemap, false, rd.downsampled_layer.mipmaps[0].view, rd.downsampled_layer.mipmaps[0].size);
@@ -211,10 +205,8 @@ void RasterizerSceneRD::_create_reflection_from_base_mipmap(ReflectionData &rd,
} else {
if (p_quality) {
//render directly to the layers
for (int i = 1; i < rd.layers[0].mipmaps.size(); i++) {
storage->get_effects()->cubemap_roughness(rd.radiance_base_cubemap, false, rd.layers[0].mipmaps[i].framebuffers[p_cube_side], p_cube_side, sky_ggx_samples_quality, float(i) / (rd.layers[0].mipmaps.size() - 1.0));
}
storage->get_effects()->cubemap_roughness(rd.layers[0].views[p_base_layer - 1], false, rd.layers[0].views[p_base_layer], p_cube_side, sky_ggx_samples_quality, float(p_base_layer) / (rd.layers[0].mipmaps.size() - 1.0), rd.layers[0].mipmaps[p_base_layer].size.x);
} else {
storage->get_effects()->cubemap_downsample(rd.radiance_base_cubemap, false, rd.downsampled_layer.mipmaps[0].view, rd.downsampled_layer.mipmaps[0].size);
@@ -739,6 +731,21 @@ bool RasterizerSceneRD::reflection_probe_instance_begin_render(RID p_instance, R
reflection_atlas_set_size(p_reflection_atlas, 128, atlas->count);
}
if (storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ALWAYS && atlas->reflection.is_valid() && atlas->reflections[0].data.layers[0].mipmaps.size() != 7) {
// Invalidate reflection atlas, need to regenerate
RD::get_singleton()->free(atlas->reflection);
atlas->reflection = RID();
for (int i = 0; i < atlas->reflections.size(); i++) {
if (atlas->reflections[i].owner.is_null()) {
continue;
}
reflection_probe_release_atlas_index(atlas->reflections[i].owner);
}
atlas->reflections.clear();
}
if (atlas->reflection.is_null()) {
int mipmaps = MIN(roughness_layers, Image::get_image_required_mipmaps(atlas->size, atlas->size, Image::FORMAT_RGBAH) + 1);
mipmaps = storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ALWAYS ? 7 : mipmaps; // always use 7 mipmaps with real time filtering
@@ -805,6 +812,7 @@ bool RasterizerSceneRD::reflection_probe_instance_begin_render(RID p_instance, R
rpi->atlas = p_reflection_atlas;
rpi->rendering = true;
rpi->dirty = false;
rpi->processing_layer = 1;
rpi->processing_side = 0;
return true;
@@ -824,24 +832,36 @@ bool RasterizerSceneRD::reflection_probe_instance_postprocess_step(RID p_instanc
return false;
}
_create_reflection_from_base_mipmap(atlas->reflections.write[rpi->atlas_index].data, false, storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ONCE, rpi->processing_side);
if (rpi->processing_layer > 1) {
_create_reflection_from_base_mipmap(atlas->reflections.write[rpi->atlas_index].data, false, storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ONCE, 10, rpi->processing_layer);
rpi->processing_layer++;
if (rpi->processing_layer == atlas->reflections[rpi->atlas_index].data.layers[0].mipmaps.size()) {
rpi->rendering = false;
rpi->processing_side = 0;
rpi->processing_layer = 1;
return true;
}
return false;
} else {
_create_reflection_from_base_mipmap(atlas->reflections.write[rpi->atlas_index].data, false, storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ONCE, rpi->processing_side, rpi->processing_layer);
}
if (storage->reflection_probe_get_update_mode(rpi->probe) == VS::REFLECTION_PROBE_UPDATE_ALWAYS) {
// Using real time reflections, all roughness is done in one step
rpi->rendering = false;
rpi->processing_side = 0;
rpi->processing_layer = 1;
return true;
}
rpi->processing_side++;
if (rpi->processing_side == 6) {
rpi->rendering = false;
rpi->processing_side = 0;
return true;
} else {
return false;
rpi->processing_layer++;
}
return false;
}
uint32_t RasterizerSceneRD::reflection_probe_instance_get_resolution(RID p_instance) {