162 lines
7.4 KiB
C++
162 lines
7.4 KiB
C++
/**************************************************************************/
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/* vrs.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "vrs.h"
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#include "../renderer_compositor_rd.h"
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#include "../storage_rd/texture_storage.h"
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#include "../uniform_set_cache_rd.h"
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#ifndef _3D_DISABLED
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#include "servers/xr_server.h"
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#endif // _3D_DISABLED
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using namespace RendererRD;
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VRS::VRS() {
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{
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Vector<String> vrs_modes;
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vrs_modes.push_back("\n"); // VRS_DEFAULT
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vrs_modes.push_back("\n#define USE_MULTIVIEW\n"); // VRS_MULTIVIEW
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vrs_shader.shader.initialize(vrs_modes);
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if (!RendererCompositorRD::get_singleton()->is_xr_enabled()) {
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vrs_shader.shader.set_variant_enabled(VRS_MULTIVIEW, false);
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}
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vrs_shader.shader_version = vrs_shader.shader.version_create();
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//use additive
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for (int i = 0; i < VRS_MAX; i++) {
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if (vrs_shader.shader.is_variant_enabled(i)) {
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vrs_shader.pipelines[i].setup(vrs_shader.shader.version_get_shader(vrs_shader.shader_version, i), RD::RENDER_PRIMITIVE_TRIANGLES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), RD::PipelineDepthStencilState(), RD::PipelineColorBlendState::create_disabled(), 0);
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} else {
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vrs_shader.pipelines[i].clear();
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}
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}
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}
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}
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VRS::~VRS() {
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vrs_shader.shader.version_free(vrs_shader.shader_version);
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}
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void VRS::copy_vrs(RID p_source_rd_texture, RID p_dest_framebuffer, bool p_multiview) {
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UniformSetCacheRD *uniform_set_cache = UniformSetCacheRD::get_singleton();
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ERR_FAIL_NULL(uniform_set_cache);
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MaterialStorage *material_storage = MaterialStorage::get_singleton();
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ERR_FAIL_NULL(material_storage);
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// setup our uniforms
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RID default_sampler = material_storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_NEAREST, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
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RD::Uniform u_source_rd_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_source_rd_texture }));
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VRSPushConstant push_constant = {};
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int mode = p_multiview ? VRS_MULTIVIEW : VRS_DEFAULT;
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// Set maximum texel factor based on maximum fragment size, some GPUs do not support 8x8 (fragment shading rate approach).
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if (MIN(RD::get_singleton()->limit_get(RD::LIMIT_VRS_MAX_FRAGMENT_WIDTH), RD::get_singleton()->limit_get(RD::LIMIT_VRS_MAX_FRAGMENT_HEIGHT)) > 4) {
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push_constant.max_texel_factor = 3.0;
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} else {
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push_constant.max_texel_factor = 2.0;
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}
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RID shader = vrs_shader.shader.version_get_shader(vrs_shader.shader_version, mode);
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ERR_FAIL_COND(shader.is_null());
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RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(p_dest_framebuffer, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_STORE, RD::INITIAL_ACTION_LOAD, RD::FINAL_ACTION_DISCARD, Vector<Color>());
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RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, vrs_shader.pipelines[mode].get_render_pipeline(RD::INVALID_ID, RD::get_singleton()->framebuffer_get_format(p_dest_framebuffer)));
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RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uniform_set_cache->get_cache(shader, 0, u_source_rd_texture), 0);
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RD::get_singleton()->draw_list_set_push_constant(draw_list, &push_constant, sizeof(VRSPushConstant));
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RD::get_singleton()->draw_list_draw(draw_list, false, 1u, 3u);
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RD::get_singleton()->draw_list_end();
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}
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Size2i VRS::get_vrs_texture_size(const Size2i p_base_size) const {
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int32_t texel_width = RD::get_singleton()->limit_get(RD::LIMIT_VRS_TEXEL_WIDTH);
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int32_t texel_height = RD::get_singleton()->limit_get(RD::LIMIT_VRS_TEXEL_HEIGHT);
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int width = p_base_size.x / texel_width;
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if (p_base_size.x % texel_width != 0) {
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width++;
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}
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int height = p_base_size.y / texel_height;
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if (p_base_size.y % texel_height != 0) {
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height++;
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}
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return Size2i(width, height);
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}
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void VRS::update_vrs_texture(RID p_vrs_fb, RID p_render_target) {
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TextureStorage *texture_storage = TextureStorage::get_singleton();
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RS::ViewportVRSMode vrs_mode = texture_storage->render_target_get_vrs_mode(p_render_target);
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RS::ViewportVRSUpdateMode vrs_update_mode = texture_storage->render_target_get_vrs_update_mode(p_render_target);
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if (vrs_mode != RS::VIEWPORT_VRS_DISABLED && vrs_update_mode != RS::VIEWPORT_VRS_UPDATE_DISABLED) {
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RD::get_singleton()->draw_command_begin_label("VRS Setup");
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if (vrs_mode == RS::VIEWPORT_VRS_TEXTURE) {
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RID vrs_texture = texture_storage->render_target_get_vrs_texture(p_render_target);
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if (vrs_texture.is_valid()) {
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RID rd_texture = texture_storage->texture_get_rd_texture(vrs_texture);
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int layers = texture_storage->texture_get_layers(vrs_texture);
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if (rd_texture.is_valid()) {
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// Copy into our density buffer
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copy_vrs(rd_texture, p_vrs_fb, layers > 1);
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}
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}
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#ifndef _3D_DISABLED
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} else if (vrs_mode == RS::VIEWPORT_VRS_XR) {
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Ref<XRInterface> interface = XRServer::get_singleton()->get_primary_interface();
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if (interface.is_valid()) {
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RID vrs_texture = interface->get_vrs_texture();
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if (vrs_texture.is_valid()) {
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RID rd_texture = texture_storage->texture_get_rd_texture(vrs_texture);
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int layers = texture_storage->texture_get_layers(vrs_texture);
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if (rd_texture.is_valid()) {
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// Copy into our density buffer
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copy_vrs(rd_texture, p_vrs_fb, layers > 1);
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}
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}
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}
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#endif // _3D_DISABLED
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}
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if (vrs_update_mode == RS::VIEWPORT_VRS_UPDATE_ONCE) {
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texture_storage->render_target_set_vrs_update_mode(p_render_target, RS::VIEWPORT_VRS_UPDATE_DISABLED);
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}
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RD::get_singleton()->draw_command_end_label();
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}
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}
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