RingRacers/src/hwr2/pass_twodee.hpp
2023-02-26 18:47:42 -06:00

116 lines
3.2 KiB
C++

// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 2023 by Ronald "Eidolon" Kinard
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
#ifndef __SRB2_HWR2_PASS_TWODEE_HPP__
#define __SRB2_HWR2_PASS_TWODEE_HPP__
#include <memory>
#include <optional>
#include <tuple>
#include <unordered_map>
#include <variant>
#include <vector>
#include "../cxxutil.hpp"
#include "pass.hpp"
#include "pass_resource_managers.hpp"
#include "twodee.hpp"
namespace srb2::hwr2
{
class TwodeePass;
/// @brief Shared structures to allow multiple 2D instances to share the same atlases
struct TwodeePassData;
/// @brief Hash map key for caching pipelines
struct TwodeePipelineKey
{
Draw2dBlend blend;
bool lines;
bool operator==(const TwodeePipelineKey& r) const noexcept { return !(blend != r.blend || lines != r.lines); }
bool operator!=(const TwodeePipelineKey& r) const noexcept { return !(*this == r); }
};
struct MergedTwodeeCommandFlatTexture
{
lumpnum_t lump;
bool operator==(const MergedTwodeeCommandFlatTexture& rhs) const noexcept { return lump == rhs.lump; }
bool operator!=(const MergedTwodeeCommandFlatTexture& rhs) const noexcept { return !(*this == rhs); }
};
struct MergedTwodeeCommand
{
TwodeePipelineKey pipeline_key = {};
rhi::Handle<rhi::BindingSet> binding_set = {};
std::optional<std::variant<size_t, MergedTwodeeCommandFlatTexture>> texture;
const uint8_t* colormap;
uint32_t index_offset = 0;
uint32_t elements = 0;
};
struct MergedTwodeeCommandList
{
rhi::Handle<rhi::Buffer> vbo {};
uint32_t vbo_size = 0;
rhi::Handle<rhi::Buffer> ibo {};
uint32_t ibo_size = 0;
std::vector<MergedTwodeeCommand> cmds;
};
std::shared_ptr<TwodeePassData> make_twodee_pass_data();
struct TwodeePass final : public Pass
{
Twodee* ctx_ = nullptr;
std::variant<rhi::Handle<rhi::Texture>, rhi::Handle<rhi::Renderbuffer>> out_color_;
std::shared_ptr<TwodeePassData> data_;
std::shared_ptr<FlatTextureManager> flat_manager_;
rhi::Handle<rhi::UniformSet> us_1;
rhi::Handle<rhi::UniformSet> us_2;
std::vector<MergedTwodeeCommandList> cmd_lists_;
std::vector<std::tuple<rhi::Handle<rhi::Buffer>, std::size_t>> vbos_;
std::vector<std::tuple<rhi::Handle<rhi::Buffer>, std::size_t>> ibos_;
bool rebuild_atlases_ = false;
rhi::Handle<rhi::RenderPass> render_pass_;
rhi::Handle<rhi::Texture> output_;
uint32_t output_width_ = 0;
uint32_t output_height_ = 0;
TwodeePass();
virtual ~TwodeePass();
virtual void prepass(rhi::Rhi& rhi) override;
virtual void transfer(rhi::Rhi& rhi, rhi::Handle<rhi::TransferContext> ctx) override;
virtual void graphics(rhi::Rhi& rhi, rhi::Handle<rhi::GraphicsContext> ctx) override;
virtual void postpass(rhi::Rhi& rhi) override;
};
} // namespace srb2::hwr2
template <>
struct std::hash<srb2::hwr2::TwodeePipelineKey>
{
std::size_t operator()(const srb2::hwr2::TwodeePipelineKey& v) const
{
std::size_t hash = 0;
srb2::hash_combine(hash, v.blend, v.lines);
return hash;
}
};
#endif // __SRB2_HWR2_PASS_TWODEE_HPP__