Files
MacroLibX/src/renderer/text_pipeline.cpp
2023-04-21 22:17:55 +02:00

105 lines
3.8 KiB
C++

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* text_pipeline.cpp :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: maldavid <kbz_8.dev@akel-engine.com> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/04/06 16:41:13 by maldavid #+# #+# */
/* Updated: 2023/04/19 13:43:49 by maldavid ### ########.fr */
/* */
/* ************************************************************************** */
#include <renderer/text_pipeline.h>
#include <fstream>
#include <utils/dogica_ttf.h>
#include <cstdio>
#define STB_TRUETYPE_IMPLEMENTATION
#include <stb_truetype.h>
namespace mlx
{
TextDrawData::TextDrawData(std::string _text, int _color, int _x, int _y) :
x(_x), y(_y), color(_color),
text(std::move(_text))
{}
void TextDrawData::init(TextLibrary& library, std::array<stbtt_bakedchar, 96>& cdata) noexcept
{
std::vector<Vertex> vertexData;
std::vector<uint16_t> indexData;
float stb_x = 0.0f;
float stb_y = 0.0f;
for(char c : text)
{
if(c < 32 || c > 127)
continue;
stbtt_aligned_quad q;
stbtt_GetBakedQuad(cdata.data(), 512, 512, c - 32, &stb_x, &stb_y, &q, 1);
std::size_t index = vertexData.size();
vertexData.emplace_back(glm::vec2{q.x0, q.y0}, glm::vec4{color & 0x00FF0000, color & 0x0000FF00, color & 0x000000FF, 0xFFFFFFFF}, glm::vec2{q.s0, q.t0});
vertexData.emplace_back(glm::vec2{q.x1, q.y0}, glm::vec4{color & 0x00FF0000, color & 0x0000FF00, color & 0x000000FF, 0xFFFFFFFF}, glm::vec2{q.s1, q.t0});
vertexData.emplace_back(glm::vec2{q.x1, q.y1}, glm::vec4{color & 0x00FF0000, color & 0x0000FF00, color & 0x000000FF, 0xFFFFFFFF}, glm::vec2{q.s1, q.t1});
vertexData.emplace_back(glm::vec2{q.x0, q.y1}, glm::vec4{color & 0x00FF0000, color & 0x0000FF00, color & 0x000000FF, 0xFFFFFFFF}, glm::vec2{q.s0, q.t1});
indexData.emplace_back(index + 0);
indexData.emplace_back(index + 1);
indexData.emplace_back(index + 2);
indexData.emplace_back(index + 2);
indexData.emplace_back(index + 3);
indexData.emplace_back(index + 0);
}
std::shared_ptr<TextData> text_data = std::make_shared<TextData>();
text_data->init(text, std::move(vertexData), std::move(indexData));
id = library.addTextToLibrary(text_data);
}
void TextPutPipeline::init(Renderer* renderer) noexcept
{
_renderer = renderer;
uint8_t tmp_bitmap[512 * 512];
uint8_t vulkan_bitmap[(512 * 512) * 4];
stbtt_BakeFontBitmap(dogica_ttf, 0, 6.0f, tmp_bitmap, 512, 512, 32, 96, _cdata.data());
for(int i = 0, j = 0; i < 512 * 512; i++, j += 4)
{
vulkan_bitmap[j + 0] = tmp_bitmap[i];
vulkan_bitmap[j + 1] = tmp_bitmap[i];
vulkan_bitmap[j + 2] = tmp_bitmap[i];
vulkan_bitmap[j + 3] = tmp_bitmap[i];
}
_atlas.create(vulkan_bitmap, 512, 512, VK_FORMAT_R8G8B8A8_UNORM);
_atlas.setDescriptor(renderer->getFragDescriptorSet().duplicate());
}
void TextPutPipeline::put(int x, int y, int color, std::string str)
{
auto res = _drawlist.emplace(std::move(str), color, x, y);
if(res.second)
const_cast<TextDrawData&>(*res.first).init(_library, _cdata);
}
void TextPutPipeline::render()
{
_atlas.updateSet(0);
for(auto& draw : _drawlist)
{
std::shared_ptr<TextData> draw_data = _library.getTextData(draw.id);
draw_data->bind(*_renderer);
_atlas.render(*_renderer, draw.x, draw.y, draw_data->getIBOsize());
}
}
void TextPutPipeline::destroy() noexcept
{
_library.clearLibrary();
_atlas.destroy();
}
}