godot/servers/rendering/renderer_rd/renderer_compositor_rd.cpp
clayjohn 57eb762bae Add option to enable HDR rendering in 2D
This is needed to allow 2D to fully make use of 3D effects (e.g. glow), and can be used to substantially improve quality of 2D rendering at the cost of performance

Additionally, the 2D rendering pipeline is done in linear space (we skip linear_to_srgb conversion in 3D tonemapping) so the entire Viewport can be kept linear.
This is necessary for proper HDR screen support in the future.
2023-08-07 11:24:03 +02:00

331 lines
14 KiB
C++

/**************************************************************************/
/* renderer_compositor_rd.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
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#include "renderer_compositor_rd.h"
#include "core/config/project_settings.h"
#include "core/io/dir_access.h"
void RendererCompositorRD::prepare_for_blitting_render_targets() {
RD::get_singleton()->prepare_screen_for_drawing();
}
void RendererCompositorRD::blit_render_targets_to_screen(DisplayServer::WindowID p_screen, const BlitToScreen *p_render_targets, int p_amount) {
RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin_for_screen(p_screen);
if (draw_list == RD::INVALID_ID) {
return; // Window is minimized and does not have valid swapchain, skip drawing without printing errors.
}
for (int i = 0; i < p_amount; i++) {
RID rd_texture = texture_storage->render_target_get_rd_texture(p_render_targets[i].render_target);
ERR_CONTINUE(rd_texture.is_null());
if (!render_target_descriptors.has(rd_texture) || !RD::get_singleton()->uniform_set_is_valid(render_target_descriptors[rd_texture])) {
Vector<RD::Uniform> uniforms;
RD::Uniform u;
u.uniform_type = RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE;
u.binding = 0;
u.append_id(blit.sampler);
u.append_id(rd_texture);
uniforms.push_back(u);
RID uniform_set = RD::get_singleton()->uniform_set_create(uniforms, blit.shader.version_get_shader(blit.shader_version, BLIT_MODE_NORMAL), 0);
render_target_descriptors[rd_texture] = uniform_set;
}
Size2 screen_size(RD::get_singleton()->screen_get_width(p_screen), RD::get_singleton()->screen_get_height(p_screen));
BlitMode mode = p_render_targets[i].lens_distortion.apply ? BLIT_MODE_LENS : (p_render_targets[i].multi_view.use_layer ? BLIT_MODE_USE_LAYER : BLIT_MODE_NORMAL);
RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, blit.pipelines[mode]);
RD::get_singleton()->draw_list_bind_index_array(draw_list, blit.array);
RD::get_singleton()->draw_list_bind_uniform_set(draw_list, render_target_descriptors[rd_texture], 0);
blit.push_constant.src_rect[0] = p_render_targets[i].src_rect.position.x;
blit.push_constant.src_rect[1] = p_render_targets[i].src_rect.position.y;
blit.push_constant.src_rect[2] = p_render_targets[i].src_rect.size.width;
blit.push_constant.src_rect[3] = p_render_targets[i].src_rect.size.height;
blit.push_constant.dst_rect[0] = p_render_targets[i].dst_rect.position.x / screen_size.width;
blit.push_constant.dst_rect[1] = p_render_targets[i].dst_rect.position.y / screen_size.height;
blit.push_constant.dst_rect[2] = p_render_targets[i].dst_rect.size.width / screen_size.width;
blit.push_constant.dst_rect[3] = p_render_targets[i].dst_rect.size.height / screen_size.height;
blit.push_constant.layer = p_render_targets[i].multi_view.layer;
blit.push_constant.eye_center[0] = p_render_targets[i].lens_distortion.eye_center.x;
blit.push_constant.eye_center[1] = p_render_targets[i].lens_distortion.eye_center.y;
blit.push_constant.k1 = p_render_targets[i].lens_distortion.k1;
blit.push_constant.k2 = p_render_targets[i].lens_distortion.k2;
blit.push_constant.upscale = p_render_targets[i].lens_distortion.upscale;
blit.push_constant.aspect_ratio = p_render_targets[i].lens_distortion.aspect_ratio;
blit.push_constant.convert_to_srgb = texture_storage->render_target_is_using_hdr(p_render_targets[i].render_target);
RD::get_singleton()->draw_list_set_push_constant(draw_list, &blit.push_constant, sizeof(BlitPushConstant));
RD::get_singleton()->draw_list_draw(draw_list, true);
}
RD::get_singleton()->draw_list_end();
}
void RendererCompositorRD::begin_frame(double frame_step) {
frame++;
delta = frame_step;
time += frame_step;
double time_roll_over = GLOBAL_GET("rendering/limits/time/time_rollover_secs");
time = Math::fmod(time, time_roll_over);
canvas->set_time(time);
scene->set_time(time, frame_step);
}
void RendererCompositorRD::end_frame(bool p_swap_buffers) {
// TODO: Likely pass a bool to swap buffers to avoid display?
RD::get_singleton()->swap_buffers();
}
void RendererCompositorRD::initialize() {
{
// Initialize blit
Vector<String> blit_modes;
blit_modes.push_back("\n");
blit_modes.push_back("\n#define USE_LAYER\n");
blit_modes.push_back("\n#define USE_LAYER\n#define APPLY_LENS_DISTORTION\n");
blit_modes.push_back("\n");
blit.shader.initialize(blit_modes);
blit.shader_version = blit.shader.version_create();
for (int i = 0; i < BLIT_MODE_MAX; i++) {
blit.pipelines[i] = RD::get_singleton()->render_pipeline_create(blit.shader.version_get_shader(blit.shader_version, i), RD::get_singleton()->screen_get_framebuffer_format(), RD::INVALID_ID, RD::RENDER_PRIMITIVE_TRIANGLES, RD::PipelineRasterizationState(), RD::PipelineMultisampleState(), RD::PipelineDepthStencilState(), i == BLIT_MODE_NORMAL_ALPHA ? RenderingDevice::PipelineColorBlendState::create_blend() : RenderingDevice::PipelineColorBlendState::create_disabled(), 0);
}
//create index array for copy shader
Vector<uint8_t> pv;
pv.resize(6 * 4);
{
uint8_t *w = pv.ptrw();
int *p32 = (int *)w;
p32[0] = 0;
p32[1] = 1;
p32[2] = 2;
p32[3] = 0;
p32[4] = 2;
p32[5] = 3;
}
blit.index_buffer = RD::get_singleton()->index_buffer_create(6, RenderingDevice::INDEX_BUFFER_FORMAT_UINT32, pv);
blit.array = RD::get_singleton()->index_array_create(blit.index_buffer, 0, 6);
blit.sampler = RD::get_singleton()->sampler_create(RD::SamplerState());
}
}
uint64_t RendererCompositorRD::frame = 1;
void RendererCompositorRD::finalize() {
memdelete(scene);
memdelete(canvas);
memdelete(fog);
memdelete(particles_storage);
memdelete(light_storage);
memdelete(mesh_storage);
memdelete(material_storage);
memdelete(texture_storage);
memdelete(utilities);
//only need to erase these, the rest are erased by cascade
blit.shader.version_free(blit.shader_version);
RD::get_singleton()->free(blit.index_buffer);
RD::get_singleton()->free(blit.sampler);
}
void RendererCompositorRD::set_boot_image(const Ref<Image> &p_image, const Color &p_color, bool p_scale, bool p_use_filter) {
if (p_image.is_null() || p_image->is_empty()) {
return;
}
RD::get_singleton()->prepare_screen_for_drawing();
RID texture = texture_storage->texture_allocate();
texture_storage->texture_2d_initialize(texture, p_image);
RID rd_texture = texture_storage->texture_get_rd_texture(texture, false);
RD::SamplerState sampler_state;
sampler_state.min_filter = p_use_filter ? RD::SAMPLER_FILTER_LINEAR : RD::SAMPLER_FILTER_NEAREST;
sampler_state.mag_filter = p_use_filter ? RD::SAMPLER_FILTER_LINEAR : RD::SAMPLER_FILTER_NEAREST;
sampler_state.max_lod = 0;
RID sampler = RD::get_singleton()->sampler_create(sampler_state);
RID uset;
{
Vector<RD::Uniform> uniforms;
RD::Uniform u;
u.uniform_type = RD::UNIFORM_TYPE_SAMPLER_WITH_TEXTURE;
u.binding = 0;
u.append_id(sampler);
u.append_id(rd_texture);
uniforms.push_back(u);
uset = RD::get_singleton()->uniform_set_create(uniforms, blit.shader.version_get_shader(blit.shader_version, BLIT_MODE_NORMAL), 0);
}
Size2 window_size = DisplayServer::get_singleton()->window_get_size();
Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());
Rect2 screenrect;
if (p_scale) {
if (window_size.width > window_size.height) {
//scale horizontally
screenrect.size.y = window_size.height;
screenrect.size.x = imgrect.size.x * window_size.height / imgrect.size.y;
screenrect.position.x = (window_size.width - screenrect.size.x) / 2;
} else {
//scale vertically
screenrect.size.x = window_size.width;
screenrect.size.y = imgrect.size.y * window_size.width / imgrect.size.x;
screenrect.position.y = (window_size.height - screenrect.size.y) / 2;
}
} else {
screenrect = imgrect;
screenrect.position += ((window_size - screenrect.size) / 2.0).floor();
}
screenrect.position /= window_size;
screenrect.size /= window_size;
RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin_for_screen(DisplayServer::MAIN_WINDOW_ID, p_color);
RD::get_singleton()->draw_list_bind_render_pipeline(draw_list, blit.pipelines[BLIT_MODE_NORMAL_ALPHA]);
RD::get_singleton()->draw_list_bind_index_array(draw_list, blit.array);
RD::get_singleton()->draw_list_bind_uniform_set(draw_list, uset, 0);
blit.push_constant.src_rect[0] = 0.0;
blit.push_constant.src_rect[1] = 0.0;
blit.push_constant.src_rect[2] = 1.0;
blit.push_constant.src_rect[3] = 1.0;
blit.push_constant.dst_rect[0] = screenrect.position.x;
blit.push_constant.dst_rect[1] = screenrect.position.y;
blit.push_constant.dst_rect[2] = screenrect.size.width;
blit.push_constant.dst_rect[3] = screenrect.size.height;
blit.push_constant.layer = 0;
blit.push_constant.eye_center[0] = 0;
blit.push_constant.eye_center[1] = 0;
blit.push_constant.k1 = 0;
blit.push_constant.k2 = 0;
blit.push_constant.upscale = 1.0;
blit.push_constant.aspect_ratio = 1.0;
blit.push_constant.convert_to_srgb = false;
RD::get_singleton()->draw_list_set_push_constant(draw_list, &blit.push_constant, sizeof(BlitPushConstant));
RD::get_singleton()->draw_list_draw(draw_list, true);
RD::get_singleton()->draw_list_end();
RD::get_singleton()->swap_buffers();
texture_storage->texture_free(texture);
RD::get_singleton()->free(sampler);
}
RendererCompositorRD *RendererCompositorRD::singleton = nullptr;
RendererCompositorRD::RendererCompositorRD() {
uniform_set_cache = memnew(UniformSetCacheRD);
framebuffer_cache = memnew(FramebufferCacheRD);
{
String shader_cache_dir = Engine::get_singleton()->get_shader_cache_path();
if (shader_cache_dir.is_empty()) {
shader_cache_dir = "user://";
}
Ref<DirAccess> da = DirAccess::open(shader_cache_dir);
if (da.is_null()) {
ERR_PRINT("Can't create shader cache folder, no shader caching will happen: " + shader_cache_dir);
} else {
Error err = da->change_dir("shader_cache");
if (err != OK) {
err = da->make_dir("shader_cache");
}
if (err != OK) {
ERR_PRINT("Can't create shader cache folder, no shader caching will happen: " + shader_cache_dir);
} else {
shader_cache_dir = shader_cache_dir.path_join("shader_cache");
bool shader_cache_enabled = GLOBAL_GET("rendering/shader_compiler/shader_cache/enabled");
if (!Engine::get_singleton()->is_editor_hint() && !shader_cache_enabled) {
shader_cache_dir = String(); //disable only if not editor
}
if (!shader_cache_dir.is_empty()) {
bool compress = GLOBAL_GET("rendering/shader_compiler/shader_cache/compress");
bool use_zstd = GLOBAL_GET("rendering/shader_compiler/shader_cache/use_zstd_compression");
bool strip_debug = GLOBAL_GET("rendering/shader_compiler/shader_cache/strip_debug");
ShaderRD::set_shader_cache_dir(shader_cache_dir);
ShaderRD::set_shader_cache_save_compressed(compress);
ShaderRD::set_shader_cache_save_compressed_zstd(use_zstd);
ShaderRD::set_shader_cache_save_debug(!strip_debug);
}
}
}
}
singleton = this;
utilities = memnew(RendererRD::Utilities);
texture_storage = memnew(RendererRD::TextureStorage);
material_storage = memnew(RendererRD::MaterialStorage);
mesh_storage = memnew(RendererRD::MeshStorage);
light_storage = memnew(RendererRD::LightStorage);
particles_storage = memnew(RendererRD::ParticlesStorage);
fog = memnew(RendererRD::Fog);
canvas = memnew(RendererCanvasRenderRD());
String rendering_method = GLOBAL_GET("rendering/renderer/rendering_method");
uint64_t textures_per_stage = RD::get_singleton()->limit_get(RD::LIMIT_MAX_TEXTURES_PER_SHADER_STAGE);
if (rendering_method == "mobile" || textures_per_stage < 48) {
scene = memnew(RendererSceneRenderImplementation::RenderForwardMobile());
if (rendering_method == "forward_plus") {
WARN_PRINT_ONCE("Platform supports less than 48 textures per stage which is less than required by the Clustered renderer. Defaulting to Mobile renderer.");
}
} else if (rendering_method == "forward_plus") {
// default to our high end renderer
scene = memnew(RendererSceneRenderImplementation::RenderForwardClustered());
} else {
ERR_FAIL_MSG("Cannot instantiate RenderingDevice-based renderer with renderer type " + rendering_method);
}
scene->init();
}
RendererCompositorRD::~RendererCompositorRD() {
memdelete(uniform_set_cache);
memdelete(framebuffer_cache);
ShaderRD::set_shader_cache_dir(String());
}