256 lines
12 KiB
C++
256 lines
12 KiB
C++
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/**************************************************************************/
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/* luminance.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 "luminance.h"
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#include "../framebuffer_cache_rd.h"
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#include "../uniform_set_cache_rd.h"
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#include "servers/rendering/renderer_rd/storage_rd/material_storage.h"
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using namespace RendererRD;
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Luminance::Luminance(bool p_prefer_raster_effects) {
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prefer_raster_effects = p_prefer_raster_effects;
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if (prefer_raster_effects) {
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Vector<String> luminance_reduce_modes;
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luminance_reduce_modes.push_back("\n#define FIRST_PASS\n"); // LUMINANCE_REDUCE_FRAGMENT_FIRST
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luminance_reduce_modes.push_back("\n"); // LUMINANCE_REDUCE_FRAGMENT
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luminance_reduce_modes.push_back("\n#define FINAL_PASS\n"); // LUMINANCE_REDUCE_FRAGMENT_FINAL
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luminance_reduce_raster.shader.initialize(luminance_reduce_modes);
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luminance_reduce_raster.shader_version = luminance_reduce_raster.shader.version_create();
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for (int i = 0; i < LUMINANCE_REDUCE_FRAGMENT_MAX; i++) {
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luminance_reduce_raster.pipelines[i].setup(luminance_reduce_raster.shader.version_get_shader(luminance_reduce_raster.shader_version, i), RD::RENDER_PRIMITIVE_TRIANGLES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), RD::PipelineDepthStencilState(), RD::PipelineColorBlendState::create_disabled(), 0);
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}
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} else {
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// Initialize luminance_reduce
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Vector<String> luminance_reduce_modes;
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luminance_reduce_modes.push_back("\n#define READ_TEXTURE\n");
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luminance_reduce_modes.push_back("\n");
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luminance_reduce_modes.push_back("\n#define WRITE_LUMINANCE\n");
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luminance_reduce.shader.initialize(luminance_reduce_modes);
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luminance_reduce.shader_version = luminance_reduce.shader.version_create();
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for (int i = 0; i < LUMINANCE_REDUCE_MAX; i++) {
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luminance_reduce.pipelines[i] = RD::get_singleton()->compute_pipeline_create(luminance_reduce.shader.version_get_shader(luminance_reduce.shader_version, i));
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}
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for (int i = 0; i < LUMINANCE_REDUCE_FRAGMENT_MAX; i++) {
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luminance_reduce_raster.pipelines[i].clear();
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}
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}
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}
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Luminance::~Luminance() {
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if (prefer_raster_effects) {
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luminance_reduce_raster.shader.version_free(luminance_reduce_raster.shader_version);
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} else {
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luminance_reduce.shader.version_free(luminance_reduce.shader_version);
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}
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}
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void Luminance::LuminanceBuffers::set_prefer_raster_effects(bool p_prefer_raster_effects) {
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prefer_raster_effects = p_prefer_raster_effects;
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}
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void Luminance::LuminanceBuffers::configure(RenderSceneBuffersRD *p_render_buffers) {
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Size2i internal_size = p_render_buffers->get_internal_size();
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int w = internal_size.x;
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int h = internal_size.y;
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while (true) {
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w = MAX(w / 8, 1);
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h = MAX(h / 8, 1);
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RD::TextureFormat tf;
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tf.format = RD::DATA_FORMAT_R32_SFLOAT;
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tf.width = w;
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tf.height = h;
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bool final = w == 1 && h == 1;
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if (prefer_raster_effects) {
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tf.usage_bits = RD::TEXTURE_USAGE_COLOR_ATTACHMENT_BIT | RD::TEXTURE_USAGE_SAMPLING_BIT;
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} else {
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tf.usage_bits = RD::TEXTURE_USAGE_STORAGE_BIT;
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if (final) {
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tf.usage_bits |= RD::TEXTURE_USAGE_SAMPLING_BIT;
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}
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}
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RID texture = RD::get_singleton()->texture_create(tf, RD::TextureView());
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reduce.push_back(texture);
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if (final) {
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current = RD::get_singleton()->texture_create(tf, RD::TextureView());
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break;
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}
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}
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}
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void Luminance::LuminanceBuffers::free_data() {
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for (int i = 0; i < reduce.size(); i++) {
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RD::get_singleton()->free(reduce[i]);
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}
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reduce.clear();
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if (current.is_valid()) {
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RD::get_singleton()->free(current);
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current = RID();
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}
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}
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Ref<Luminance::LuminanceBuffers> Luminance::get_luminance_buffers(Ref<RenderSceneBuffersRD> p_render_buffers) {
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if (p_render_buffers->has_custom_data(RB_LUMINANCE_BUFFERS)) {
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return p_render_buffers->get_custom_data(RB_LUMINANCE_BUFFERS);
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}
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Ref<LuminanceBuffers> buffers;
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buffers.instantiate();
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buffers->set_prefer_raster_effects(prefer_raster_effects);
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buffers->configure(p_render_buffers.ptr());
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p_render_buffers->set_custom_data(RB_LUMINANCE_BUFFERS, buffers);
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return buffers;
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}
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RID Luminance::get_current_luminance_buffer(Ref<RenderSceneBuffersRD> p_render_buffers) {
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if (p_render_buffers->has_custom_data(RB_LUMINANCE_BUFFERS)) {
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Ref<LuminanceBuffers> buffers = p_render_buffers->get_custom_data(RB_LUMINANCE_BUFFERS);
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return buffers->current;
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}
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return RID();
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}
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void Luminance::luminance_reduction(RID p_source_texture, const Size2i p_source_size, Ref<LuminanceBuffers> p_luminance_buffers, float p_min_luminance, float p_max_luminance, float p_adjust, bool p_set) {
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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_LINEAR, RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED);
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if (prefer_raster_effects) {
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LuminanceReduceRasterPushConstant push_constant;
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memset(&push_constant, 0, sizeof(LuminanceReduceRasterPushConstant));
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push_constant.max_luminance = p_max_luminance;
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push_constant.min_luminance = p_min_luminance;
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push_constant.exposure_adjust = p_adjust;
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for (int i = 0; i < p_luminance_buffers->reduce.size(); i++) {
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push_constant.source_size[0] = i == 0 ? p_source_size.x : push_constant.dest_size[0];
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push_constant.source_size[1] = i == 0 ? p_source_size.y : push_constant.dest_size[1];
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push_constant.dest_size[0] = MAX(push_constant.source_size[0] / 8, 1);
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push_constant.dest_size[1] = MAX(push_constant.source_size[1] / 8, 1);
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bool final = !p_set && (push_constant.dest_size[0] == 1) && (push_constant.dest_size[1] == 1);
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LuminanceReduceRasterMode mode = final ? LUMINANCE_REDUCE_FRAGMENT_FINAL : (i == 0 ? LUMINANCE_REDUCE_FRAGMENT_FIRST : LUMINANCE_REDUCE_FRAGMENT);
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RID shader = luminance_reduce_raster.shader.version_get_shader(luminance_reduce_raster.shader_version, mode);
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RID framebuffer = FramebufferCacheRD::get_singleton()->get_cache(p_luminance_buffers->reduce[i]);
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RD::Uniform u_source_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, i == 0 ? p_source_texture : p_luminance_buffers->reduce[i - 1] }));
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RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(framebuffer, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD);
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RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, luminance_reduce_raster.pipelines[mode].get_render_pipeline(RD::INVALID_ID, RD::get_singleton()->framebuffer_get_format(framebuffer)));
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RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uniform_set_cache->get_cache(shader, 0, u_source_texture), 0);
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if (final) {
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RD::Uniform u_current_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_luminance_buffers->current }));
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RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uniform_set_cache->get_cache(shader, 1, u_current_texture), 1);
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}
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RD::get_singleton()->draw_list_bind_index_array(draw_list, material_storage->get_quad_index_array());
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RD::get_singleton()->draw_list_set_push_constant(draw_list, &push_constant, sizeof(LuminanceReduceRasterPushConstant));
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RD::get_singleton()->draw_list_draw(draw_list, true);
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RD::get_singleton()->draw_list_end();
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}
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} else {
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LuminanceReducePushConstant push_constant;
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memset(&push_constant, 0, sizeof(LuminanceReducePushConstant));
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push_constant.source_size[0] = p_source_size.x;
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push_constant.source_size[1] = p_source_size.y;
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push_constant.max_luminance = p_max_luminance;
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push_constant.min_luminance = p_min_luminance;
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push_constant.exposure_adjust = p_adjust;
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RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
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for (int i = 0; i < p_luminance_buffers->reduce.size(); i++) {
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RID shader;
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if (i == 0) {
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shader = luminance_reduce.shader.version_get_shader(luminance_reduce.shader_version, LUMINANCE_REDUCE_READ);
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RD::Uniform u_source_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_source_texture }));
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RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, luminance_reduce.pipelines[LUMINANCE_REDUCE_READ]);
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RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_source_texture), 0);
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} else {
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RD::get_singleton()->compute_list_add_barrier(compute_list); //needs barrier, wait until previous is done
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if (i == p_luminance_buffers->reduce.size() - 1 && !p_set) {
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shader = luminance_reduce.shader.version_get_shader(luminance_reduce.shader_version, LUMINANCE_REDUCE_WRITE);
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RD::Uniform u_current_texture(RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE, 0, Vector<RID>({ default_sampler, p_luminance_buffers->current }));
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RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, luminance_reduce.pipelines[LUMINANCE_REDUCE_WRITE]);
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RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 2, u_current_texture), 2);
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} else {
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shader = luminance_reduce.shader.version_get_shader(luminance_reduce.shader_version, LUMINANCE_REDUCE);
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RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, luminance_reduce.pipelines[LUMINANCE_REDUCE]);
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}
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RD::Uniform u_source_texture(RD::UNIFORM_TYPE_IMAGE, 0, p_luminance_buffers->reduce[i - 1]);
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RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 0, u_source_texture), 0);
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}
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RD::Uniform u_reduce_texture(RD::UNIFORM_TYPE_IMAGE, 0, p_luminance_buffers->reduce[i]);
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RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set_cache->get_cache(shader, 1, u_reduce_texture), 1);
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RD::get_singleton()->compute_list_set_push_constant(compute_list, &push_constant, sizeof(LuminanceReducePushConstant));
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RD::get_singleton()->compute_list_dispatch_threads(compute_list, push_constant.source_size[0], push_constant.source_size[1], 1);
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push_constant.source_size[0] = MAX(push_constant.source_size[0] / 8, 1);
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push_constant.source_size[1] = MAX(push_constant.source_size[1] / 8, 1);
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}
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RD::get_singleton()->compute_list_end();
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}
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SWAP(p_luminance_buffers->current, p_luminance_buffers->reduce.write[p_luminance_buffers->reduce.size() - 1]);
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}
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