/**************************************************************************/ /* 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> 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; }