1/**************************************************************************/
2/* fsr.cpp */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
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15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
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19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#include "fsr.h"
32#include "../storage_rd/material_storage.h"
33#include "../uniform_set_cache_rd.h"
34
35using namespace RendererRD;
36
37FSR::FSR() {
38 Vector<String> FSR_upscale_modes;
39
40#if defined(MACOS_ENABLED) || defined(IOS_ENABLED)
41 // MoltenVK does not support some of the operations used by the normal mode of FSR. Fallback works just fine though.
42 FSR_upscale_modes.push_back("\n#define MODE_FSR_UPSCALE_FALLBACK\n");
43#else
44 // Everyone else can use normal mode when available.
45 if (RD::get_singleton()->has_feature(RD::SUPPORTS_FSR_HALF_FLOAT)) {
46 FSR_upscale_modes.push_back("\n#define MODE_FSR_UPSCALE_NORMAL\n");
47 } else {
48 FSR_upscale_modes.push_back("\n#define MODE_FSR_UPSCALE_FALLBACK\n");
49 }
50#endif
51
52 fsr_shader.initialize(FSR_upscale_modes);
53
54 shader_version = fsr_shader.version_create();
55 pipeline = RD::get_singleton()->compute_pipeline_create(fsr_shader.version_get_shader(shader_version, 0));
56}
57
58FSR::~FSR() {
59 fsr_shader.version_free(shader_version);
60}
61
62void FSR::fsr_upscale(Ref<RenderSceneBuffersRD> p_render_buffers, RID p_source_rd_texture, RID p_destination_texture) {
63 UniformSetCacheRD *uniform_set_cache = UniformSetCacheRD::get_singleton();
64 ERR_FAIL_NULL(uniform_set_cache);
65 MaterialStorage *material_storage = MaterialStorage::get_singleton();
66 ERR_FAIL_NULL(material_storage);
67
68 Size2i internal_size = p_render_buffers->get_internal_size();
69 Size2i target_size = p_render_buffers->get_target_size();
70 float fsr_upscale_sharpness = p_render_buffers->get_fsr_sharpness();
71
72 if (!p_render_buffers->has_texture(SNAME("FSR"), SNAME("upscale_texture"))) {
73 RD::DataFormat format = p_render_buffers->get_base_data_format();
74 uint32_t usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_STORAGE_BIT | RD::TEXTURE_USAGE_COLOR_ATTACHMENT_BIT;
75 uint32_t layers = 1; // we only need one layer, in multiview we're processing one layer at a time.
76
77 p_render_buffers->create_texture(SNAME("FSR"), SNAME("upscale_texture"), format, usage_bits, RD::TEXTURE_SAMPLES_1, target_size, layers);
78 }
79
80 RID upscale_texture = p_render_buffers->get_texture(SNAME("FSR"), SNAME("upscale_texture"));
81
82 FSRUpscalePushConstant push_constant;
83 memset(&push_constant, 0, sizeof(FSRUpscalePushConstant));
84
85 int dispatch_x = (target_size.x + 15) / 16;
86 int dispatch_y = (target_size.y + 15) / 16;
87
88 RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
89 RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, pipeline);
90
91 push_constant.resolution_width = internal_size.width;
92 push_constant.resolution_height = internal_size.height;
93 push_constant.upscaled_width = target_size.width;
94 push_constant.upscaled_height = target_size.height;
95 push_constant.sharpness = fsr_upscale_sharpness;
96
97 RID shader = fsr_shader.version_get_shader(shader_version, 0);
98 ERR_FAIL_COND(shader.is_null());
99
100 RID default_sampler = material_storage->sampler_rd_get_default(RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
101
102 //FSR Easc
103 RD::Uniform u_source_rd_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, { default_sampler, p_source_rd_texture });
104 RD::Uniform u_upscale_texture(RD::UNIFORM_TYPE_IMAGE, 0, { upscale_texture });
105
106 push_constant.pass = FSR_UPSCALE_PASS_EASU;
107 RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_source_rd_texture), 0);
108 RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 1, u_upscale_texture), 1);
109
110 RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(FSRUpscalePushConstant));
111
112 RD::get_singleton()->compute_list_dispatch(compute_list, dispatch_x, dispatch_y, 1);
113 RD::get_singleton()->compute_list_add_barrier(compute_list);
114
115 //FSR Rcas
116 RD::Uniform u_upscale_texture_with_sampler(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, { default_sampler, upscale_texture });
117 RD::Uniform u_destination_texture(RD::UNIFORM_TYPE_IMAGE, 0, { p_destination_texture });
118
119 push_constant.pass = FSR_UPSCALE_PASS_RCAS;
120 RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_upscale_texture_with_sampler), 0);
121 RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 1, u_destination_texture), 1);
122
123 RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(FSRUpscalePushConstant));
124
125 RD::get_singleton()->compute_list_dispatch(compute_list, dispatch_x, dispatch_y, 1);
126
127 RD::get_singleton()->compute_list_end(compute_list);
128}
129