💿🐜 Antkeeper source code
https://antkeeper.com
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
180 lines
4.9 KiB
180 lines
4.9 KiB
/*
|
|
* Copyright (C) 2023 Christopher J. Howard
|
|
*
|
|
* This file is part of Antkeeper source code.
|
|
*
|
|
* Antkeeper source code is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Antkeeper source code is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <engine/render/passes/final-pass.hpp>
|
|
#include <engine/resources/resource-manager.hpp>
|
|
#include <engine/gl/rasterizer.hpp>
|
|
#include <engine/gl/framebuffer.hpp>
|
|
#include <engine/gl/shader-program.hpp>
|
|
#include <engine/gl/shader-variable.hpp>
|
|
#include <engine/gl/vertex-buffer.hpp>
|
|
#include <engine/gl/vertex-array.hpp>
|
|
#include <engine/gl/vertex-attribute.hpp>
|
|
#include <engine/gl/drawing-mode.hpp>
|
|
#include <engine/gl/texture-2d.hpp>
|
|
#include <engine/gl/texture-wrapping.hpp>
|
|
#include <engine/gl/texture-filter.hpp>
|
|
#include <engine/render/vertex-attribute.hpp>
|
|
#include <engine/render/context.hpp>
|
|
#include <cmath>
|
|
#include <cstdint>
|
|
#include <glad/glad.h>
|
|
#include <engine/utility/hash/fnv1a.hpp>
|
|
#include <engine/debug/log.hpp>
|
|
|
|
namespace render {
|
|
|
|
final_pass::final_pass(gl::rasterizer* rasterizer, const gl::framebuffer* framebuffer, resource_manager* resource_manager):
|
|
pass(rasterizer, framebuffer),
|
|
color_texture(nullptr),
|
|
bloom_texture(nullptr),
|
|
bloom_weight(0.04f),
|
|
blue_noise_texture(nullptr),
|
|
blue_noise_scale(1.0f)
|
|
{
|
|
// Load shader template and build shader program
|
|
auto shader_template = resource_manager->load<gl::shader_template>("final.glsl");
|
|
shader_program = shader_template->build();
|
|
if (!shader_program->linked())
|
|
{
|
|
debug::log::error("Failed to final pass shader program: {}", shader_program->info());
|
|
debug::log::warning("{}", shader_template->configure(gl::shader_stage::vertex));
|
|
}
|
|
}
|
|
|
|
void final_pass::render(render::context& ctx)
|
|
{
|
|
// Update resolution
|
|
const auto viewport_size = framebuffer->get_dimensions();
|
|
resolution = {static_cast<float>(std::get<0>(viewport_size)), static_cast<float>(std::get<1>(viewport_size))};
|
|
|
|
// Update time
|
|
time = ctx.t;
|
|
|
|
// Execute render commands
|
|
for (const auto& command: command_buffer)
|
|
{
|
|
command();
|
|
}
|
|
|
|
// Increment current frame
|
|
++frame;
|
|
}
|
|
|
|
void final_pass::set_color_texture(const gl::texture_2d* texture)
|
|
{
|
|
this->color_texture = texture;
|
|
|
|
rebuild_command_buffer();
|
|
}
|
|
|
|
void final_pass::set_bloom_texture(const gl::texture_2d* texture) noexcept
|
|
{
|
|
this->bloom_texture = texture;
|
|
|
|
rebuild_command_buffer();
|
|
}
|
|
|
|
void final_pass::set_bloom_weight(float weight) noexcept
|
|
{
|
|
this->bloom_weight = weight;
|
|
}
|
|
|
|
void final_pass::set_blue_noise_texture(std::shared_ptr<gl::texture_2d> texture)
|
|
{
|
|
this->blue_noise_texture = texture;
|
|
blue_noise_scale = 1.0f / static_cast<float>(texture->get_dimensions()[0]);
|
|
|
|
rebuild_command_buffer();
|
|
}
|
|
|
|
void final_pass::rebuild_command_buffer()
|
|
{
|
|
command_buffer.clear();
|
|
|
|
command_buffer.emplace_back
|
|
(
|
|
[&]()
|
|
{
|
|
rasterizer->use_framebuffer(*framebuffer);
|
|
rasterizer->set_viewport(0, 0, static_cast<int>(resolution.x()), static_cast<int>(resolution.y()));
|
|
|
|
glDisable(GL_BLEND);
|
|
glDisable(GL_DEPTH_TEST);
|
|
glDepthMask(GL_FALSE);
|
|
glEnable(GL_CULL_FACE);
|
|
glCullFace(GL_BACK);
|
|
|
|
rasterizer->use_program(*shader_program);
|
|
}
|
|
);
|
|
|
|
if (color_texture)
|
|
{
|
|
if (const auto var = shader_program->variable("color_texture"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(*color_texture);});
|
|
}
|
|
}
|
|
if (bloom_texture)
|
|
{
|
|
if (const auto var = shader_program->variable("bloom_texture"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(*bloom_texture);});
|
|
}
|
|
}
|
|
if (blue_noise_texture)
|
|
{
|
|
if (const auto var = shader_program->variable("blue_noise_texture"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(*blue_noise_texture);});
|
|
}
|
|
}
|
|
|
|
if (const auto var = shader_program->variable("bloom_weight"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(bloom_weight);});
|
|
}
|
|
if (const auto var = shader_program->variable("blue_noise_scale"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(blue_noise_scale);});
|
|
}
|
|
if (const auto var = shader_program->variable("resolution"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(resolution);});
|
|
}
|
|
if (const auto var = shader_program->variable("time"))
|
|
{
|
|
command_buffer.emplace_back([&, var](){var->update(time);});
|
|
}
|
|
if (const auto frame_var = shader_program->variable("frame"))
|
|
{
|
|
command_buffer.emplace_back([&, frame_var](){frame_var->update(frame);});
|
|
}
|
|
|
|
command_buffer.emplace_back
|
|
(
|
|
[&]()
|
|
{
|
|
rasterizer->draw_arrays(gl::drawing_mode::triangles, 0, 3);
|
|
}
|
|
);
|
|
}
|
|
|
|
} // namespace render
|