mirror of
https://github.com/KartKrewDev/RingRacers.git
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115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
// SONIC ROBO BLAST 2
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//-----------------------------------------------------------------------------
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// Copyright (C) 2023 by Ronald "Eidolon" Kinard
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//
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// This program is free software distributed under the
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// terms of the GNU General Public License, version 2.
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// See the 'LICENSE' file for more details.
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//-----------------------------------------------------------------------------
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#include "rhi_gl2_platform.hpp"
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#include <array>
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#include <sstream>
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#include <SDL.h>
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#include <fmt/core.h>
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#include "../cxxutil.hpp"
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#include "../w_wad.h"
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#include "../z_zone.h"
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using namespace srb2;
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using namespace srb2::rhi;
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SdlGl2Platform::~SdlGl2Platform() = default;
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void SdlGl2Platform::present()
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{
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SRB2_ASSERT(window != nullptr);
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SRB2_ASSERT(SDL_GetWindowID(window) != 0);
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SDL_GL_SwapWindow(window);
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}
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static constexpr const char* pipeline_lump_slug(rhi::PipelineProgram program)
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{
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switch (program)
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{
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case rhi::PipelineProgram::kUnshaded:
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return "unshaded";
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case rhi::PipelineProgram::kUnshadedPaletted:
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return "unshadedpaletted";
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case rhi::PipelineProgram::kPostprocessWipe:
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return "postprocesswipe";
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case rhi::PipelineProgram::kPostimg:
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return "postimg";
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default:
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return "";
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}
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}
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static std::array<std::string, 2> glsllist_lump_names(rhi::PipelineProgram program)
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{
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const char* pipeline_slug = pipeline_lump_slug(program);
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std::string vertex_list_name = fmt::format("rhi_glsllist_{}_vertex", pipeline_slug);
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std::string fragment_list_name = fmt::format("rhi_glsllist_{}_fragment", pipeline_slug);
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return {std::move(vertex_list_name), std::move(fragment_list_name)};
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}
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static std::vector<std::string> get_sources_from_glsllist_lump(const char* lumpname)
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{
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lumpnum_t glsllist_lump_num = W_GetNumForLongName(lumpname);
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void* glsllist_lump = W_CacheLumpNum(glsllist_lump_num, PU_CACHE);
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size_t glsllist_lump_length = W_LumpLength(glsllist_lump_num);
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std::istringstream glsllist(std::string(static_cast<const char*>(glsllist_lump), glsllist_lump_length));
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std::vector<std::string> sources;
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for (std::string line; std::getline(glsllist, line); )
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{
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if (line.empty())
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{
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continue;
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}
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if (line[0] == '#')
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{
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continue;
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}
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if (line.back() == '\r')
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{
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line.pop_back();
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}
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lumpnum_t source_lump_num = W_GetNumForLongName(line.c_str());
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void* source_lump = W_CacheLumpNum(source_lump_num, PU_CACHE);
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size_t source_lump_length = W_LumpLength(source_lump_num);
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sources.emplace_back(static_cast<const char*>(source_lump), source_lump_length);
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}
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return sources;
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}
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std::tuple<std::vector<std::string>, std::vector<std::string>>
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SdlGl2Platform::find_shader_sources(rhi::PipelineProgram program)
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{
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std::array<std::string, 2> glsllist_names = glsllist_lump_names(program);
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std::vector<std::string> vertex_sources = get_sources_from_glsllist_lump(glsllist_names[0].c_str());
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std::vector<std::string> fragment_sources = get_sources_from_glsllist_lump(glsllist_names[1].c_str());
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return std::make_tuple(std::move(vertex_sources), std::move(fragment_sources));
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}
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rhi::Rect SdlGl2Platform::get_default_framebuffer_dimensions()
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{
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SRB2_ASSERT(window != nullptr);
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int w;
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int h;
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SDL_GL_GetDrawableSize(window, &w, &h);
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return {0, 0, static_cast<uint32_t>(w), static_cast<uint32_t>(h)};
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}
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