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Diffstat (limited to 'servers/xr/xr_vrs.cpp')
| -rw-r--r-- | servers/xr/xr_vrs.cpp | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/servers/xr/xr_vrs.cpp b/servers/xr/xr_vrs.cpp new file mode 100644 index 0000000000..9d1e2f2068 --- /dev/null +++ b/servers/xr/xr_vrs.cpp @@ -0,0 +1,151 @@ +/**************************************************************************/ +/* xr_vrs.cpp */ +/**************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/**************************************************************************/ +/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/**************************************************************************/ + +#include "xr_vrs.h" + +#include "servers/rendering/renderer_scene_render.h" +#include "servers/rendering_server.h" + +void XRVRS::_bind_methods() { + ClassDB::bind_method(D_METHOD("get_vrs_min_radius"), &XRVRS::get_vrs_min_radius); + ClassDB::bind_method(D_METHOD("set_vrs_min_radius", "radius"), &XRVRS::set_vrs_min_radius); + + ClassDB::bind_method(D_METHOD("get_vrs_strength"), &XRVRS::get_vrs_strength); + ClassDB::bind_method(D_METHOD("set_vrs_strength", "strength"), &XRVRS::set_vrs_strength); + + ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "vrs_min_radius", PROPERTY_HINT_RANGE, "1.0,100.0,1.0"), "set_vrs_min_radius", "get_vrs_min_radius"); + ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "vrs_strength", PROPERTY_HINT_RANGE, "0.1,10.0,0.1"), "set_vrs_strength", "get_vrs_strength"); + + ClassDB::bind_method(D_METHOD("make_vrs_texture", "target_size", "eye_foci"), &XRVRS::make_vrs_texture); +} + +XRVRS::~XRVRS() { + if (vrs_texture.is_valid()) { + ERR_FAIL_NULL(RS::get_singleton()); + RS::get_singleton()->free(vrs_texture); + vrs_texture = RID(); + } +} + +float XRVRS::get_vrs_min_radius() const { + return vrs_min_radius; +} + +void XRVRS::set_vrs_min_radius(float p_vrs_min_radius) { + if (p_vrs_min_radius < 1.0) { + WARN_PRINT_ONCE("VRS minimum radius can not be set below 1.0"); + vrs_min_radius = 1.0; + } else if (p_vrs_min_radius > 100.0) { + WARN_PRINT_ONCE("VRS minimum radius can not be set above 100.0"); + vrs_min_radius = 100.0; + } else { + vrs_min_radius = p_vrs_min_radius; + vrs_dirty = true; + } +} + +float XRVRS::get_vrs_strength() const { + return vrs_strength; +} + +void XRVRS::set_vrs_strength(float p_vrs_strength) { + if (p_vrs_strength < 0.1) { + WARN_PRINT_ONCE("VRS strength can not be set below 0.1"); + vrs_strength = 0.1; + } else if (p_vrs_strength > 10.0) { + WARN_PRINT_ONCE("VRS strength can not be set above 10.0"); + vrs_strength = 10.0; + } else { + vrs_strength = p_vrs_strength; + vrs_dirty = true; + } +} + +RID XRVRS::make_vrs_texture(const Size2 &p_target_size, const PackedVector2Array &p_eye_foci) { + ERR_FAIL_COND_V(p_eye_foci.is_empty(), RID()); + + int32_t texel_width = RD::get_singleton()->limit_get(RD::LIMIT_VRS_TEXEL_WIDTH); + int32_t texel_height = RD::get_singleton()->limit_get(RD::LIMIT_VRS_TEXEL_HEIGHT); + + Size2 vrs_size = Size2(0.5 + p_target_size.x / texel_width, 0.5 + p_target_size.y / texel_height).round(); + float max_radius = 0.5 * MIN(vrs_size.x, vrs_size.y); // Maximum radius that fits inside of our image + float min_radius = vrs_min_radius * max_radius / 100.0; // Minimum radius as a percentage of our size + real_t outer_radius = MAX(1.0, (max_radius - min_radius) / vrs_strength); + Size2 vrs_sizei = vrs_size; + + // Our density map is now unified, with a value of (0.0, 0.0) meaning a 1x1 texel size and (1.0, 1.0) an max texel size. + // For our standard VRS extension on Vulkan this means a maximum of 8x8. + // For the density map extension this scales depending on the max texel size. + + if (target_size != vrs_sizei || eye_foci != p_eye_foci || vrs_dirty) { + // Out with the old. + if (vrs_texture.is_valid()) { + RS::get_singleton()->free(vrs_texture); + vrs_texture = RID(); + } + + // In with the new. + Vector<Ref<Image>> images; + target_size = vrs_sizei; + eye_foci = p_eye_foci; + + for (int i = 0; i < eye_foci.size() && i < RendererSceneRender::MAX_RENDER_VIEWS; i++) { + PackedByteArray data; + data.resize(vrs_sizei.x * vrs_sizei.y * 2); + uint8_t *data_ptr = data.ptrw(); + + Vector2i view_center; + view_center.x = int(vrs_size.x * (eye_foci[i].x + 1.0) * 0.5); + view_center.y = int(vrs_size.y * (eye_foci[i].y + 1.0) * 0.5); + + int d = 0; + for (int y = 0; y < vrs_sizei.y; y++) { + for (int x = 0; x < vrs_sizei.x; x++) { + Vector2 offset = Vector2(x - view_center.x, y - view_center.y); + real_t density = 255.0 * MAX(0.0, (Math::abs(offset.x) - min_radius) / outer_radius); + data_ptr[d++] = MIN(255, density); + density = 255.0 * MAX(0.0, (Math::abs(offset.y) - min_radius) / outer_radius); + data_ptr[d++] = MIN(255, density); + } + } + images.push_back(Image::create_from_data(vrs_sizei.x, vrs_sizei.y, false, Image::FORMAT_RG8, data)); + } + + if (images.size() == 1) { + vrs_texture = RS::get_singleton()->texture_2d_create(images[0]); + } else { + vrs_texture = RS::get_singleton()->texture_2d_layered_create(images, RS::TEXTURE_LAYERED_2D_ARRAY); + } + + vrs_dirty = false; + } + + return vrs_texture; +} |