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Use 16-bit depth to improve dynamic VoxelGI performance

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In a complex scene with several dynamic emissive objects, this
saves over 1 ms of GPU time on a GTX 1080 in 2560×1440.
This commit is contained in:
Hugo Locurcio 2021-11-28 18:51:36 +01:00
parent 69a194f051
commit 565f9c0448
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GPG Key ID: 39E8F8BE30B0A49C
1 changed files with 3 additions and 2 deletions
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5
servers/rendering/renderer_rd/renderer_scene_gi_rd.cpp
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@ -2182,8 +2182,9 @@ void RendererSceneGIRD::VoxelGIInstance::update(bool p_update_light_instances, c
dmap.texture = RD::get_singleton()->texture_create(dtf, RD::TextureView());
if (dynamic_maps.size() == 0) {
//render depth for first one
dtf.format = RD::get_singleton()->texture_is_format_supported_for_usage(RD::DATA_FORMAT_D32_SFLOAT, RD::TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) ? RD::DATA_FORMAT_D32_SFLOAT : RD::DATA_FORMAT_X8_D24_UNORM_PACK32;
// Render depth for first one.
// Use 16-bit depth when supported to improve performance.
dtf.format = RD::get_singleton()->texture_is_format_supported_for_usage(RD::DATA_FORMAT_D16_UNORM, RD::TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT) ? RD::DATA_FORMAT_D16_UNORM : RD::DATA_FORMAT_X8_D24_UNORM_PACK32;
dtf.usage_bits = RD::TEXTURE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
dmap.fb_depth = RD::get_singleton()->texture_create(dtf, RD::TextureView());
}