231 lines
8.6 KiB
C++
231 lines
8.6 KiB
C++
/*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#include "TextDrawable.hpp"
|
|
#include "Scene/Geometry.hpp"
|
|
#include "Scene/Material.hpp"
|
|
#include "Scene/Vertex.hpp"
|
|
#include "Scene/UniformBuffer.hpp"
|
|
#include "Scene/IFontAtlasGenerator.hpp"
|
|
#include "Base/Logger.hpp"
|
|
#include "Host/ResourceLoader.hpp"
|
|
#include "Image/ImageLoader.hpp"
|
|
#include "DataFormat.hpp"
|
|
#include "Base/Logger.hpp"
|
|
#include <fstream>
|
|
#include <utf8.h>
|
|
|
|
namespace OpenVulkano::Scene
|
|
{
|
|
namespace
|
|
{
|
|
constexpr uint32_t MISSING_GLYPH_SYMBOL = '?';
|
|
|
|
Shader MakeDefaultShader(FontAtlasType type)
|
|
{
|
|
Shader shader;
|
|
shader.AddShaderProgram(ShaderProgramType::VERTEX, "Shader/text");
|
|
shader.AddShaderProgram(ShaderProgramType::FRAGMENT, std::string(type.GetDefaultFragmentShader()));
|
|
shader.AddVertexInputDescription(Vertex::GetVertexInputDescription());
|
|
shader.AddDescriptorSetLayoutBinding(Texture::DESCRIPTOR_SET_LAYOUT_BINDING);
|
|
DescriptorSetLayoutBinding desc = UniformBuffer::DESCRIPTOR_SET_LAYOUT_BINDING;
|
|
desc.stageFlags = ShaderProgramType::FRAGMENT;
|
|
shader.AddDescriptorSetLayoutBinding(desc);
|
|
shader.alphaBlend = true;
|
|
shader.cullMode = CullMode::NONE;
|
|
return shader;
|
|
}
|
|
|
|
Shader DEFAULT_SHADER_BITMAP = MakeDefaultShader(FontAtlasType::BITMAP);
|
|
Shader DEFAULT_SHADER_SDF = MakeDefaultShader(FontAtlasType::SDF);
|
|
Shader DEFAULT_SHADER_MSDF = MakeDefaultShader(FontAtlasType::MSDF);
|
|
}
|
|
|
|
TextDrawable::TextDrawable(const TextConfig& config)
|
|
: Drawable(DrawEncoder::GetDrawEncoder<TextDrawable>()), m_cfg(config)
|
|
{
|
|
m_uniBuffer.Init(sizeof(TextConfig), &m_cfg, 3);
|
|
m_uniBuffer.binding.stageFlags = ShaderProgramType::FRAGMENT;
|
|
}
|
|
|
|
TextDrawable::TextDrawable(const Array<char>& atlasMetadata, const TextConfig& config)
|
|
: TextDrawable(atlasMetadata, nullptr, config)
|
|
{}
|
|
|
|
TextDrawable::TextDrawable(const std::string& atlasMetadataFile, const TextConfig& config)
|
|
: TextDrawable(Utils::ReadFile(atlasMetadataFile), nullptr, config)
|
|
{}
|
|
|
|
TextDrawable::TextDrawable(const std::string& atlasMetadataFile, Texture* atlasTex, const TextConfig& config)
|
|
: TextDrawable(Utils::ReadFile(atlasMetadataFile), atlasTex, config)
|
|
{}
|
|
|
|
TextDrawable::TextDrawable(const Array<char>& atlasMetadata, Texture* atlasTex, const TextConfig& config)
|
|
: Drawable(DrawEncoder::GetDrawEncoder<TextDrawable>()), m_cfg(config)
|
|
{
|
|
uint32_t isPacked;
|
|
std::memcpy(&isPacked, atlasMetadata.Data() + (atlasMetadata.Size() - sizeof(uint32_t)), sizeof(uint32_t));
|
|
uint64_t metadataBytes;
|
|
std::memcpy(&metadataBytes, atlasMetadata.Data() + (atlasMetadata.Size() - sizeof(uint32_t) - sizeof(uint64_t)),
|
|
sizeof(uint64_t));
|
|
uint64_t offsetToMetadata = atlasMetadata.Size() - metadataBytes - sizeof(uint32_t) - sizeof(uint64_t);
|
|
m_atlasData = std::make_shared<AtlasData>();
|
|
if (isPacked)
|
|
{
|
|
Texture* texture = &m_atlasData->texture;
|
|
m_atlasData->img = Image::IImageLoader::loadData(reinterpret_cast<const uint8_t*>(atlasMetadata.Data()), offsetToMetadata);
|
|
texture->format = m_atlasData->img->dataFormat;
|
|
texture->resolution = m_atlasData->img->resolution;
|
|
texture->size = m_atlasData->img->data.Size();
|
|
texture->textureBuffer = m_atlasData->img->data.Data();
|
|
}
|
|
else
|
|
{
|
|
if (atlasTex == nullptr) { throw std::runtime_error("Atlas texture cannot be null with non-packed atlas metadata"); }
|
|
m_atlasData->texture = *atlasTex;
|
|
}
|
|
|
|
// metadata info
|
|
size_t read_bytes = offsetToMetadata;
|
|
size_t readMetadataBytes = 0;
|
|
uint32_t unicode = 0;
|
|
|
|
std::memcpy(&m_atlasData->meta, atlasMetadata.Data() + read_bytes, sizeof(AtlasMetadata));
|
|
read_bytes += sizeof(AtlasMetadata);
|
|
readMetadataBytes += sizeof(AtlasMetadata);
|
|
while (readMetadataBytes < metadataBytes)
|
|
{
|
|
std::memcpy(&unicode, atlasMetadata.Data() + read_bytes, sizeof(uint32_t));
|
|
read_bytes += sizeof(uint32_t);
|
|
readMetadataBytes += sizeof(uint32_t);
|
|
GlyphInfo& info = m_atlasData->glyphs[unicode];
|
|
std::memcpy(&info, atlasMetadata.Data() + read_bytes, sizeof(GlyphInfo));
|
|
read_bytes += sizeof(GlyphInfo);
|
|
readMetadataBytes += sizeof(GlyphInfo);
|
|
}
|
|
m_uniBuffer.Init(sizeof(TextConfig), &m_cfg, 3);
|
|
m_uniBuffer.binding.stageFlags = ShaderProgramType::FRAGMENT;
|
|
if (m_atlasData->meta.atlasType == FontAtlasType::BITMAP)
|
|
{
|
|
m_atlasData->texture.m_samplerConfig = &SamplerConfig::NEAREST;
|
|
}
|
|
}
|
|
|
|
TextDrawable::TextDrawable(const std::shared_ptr<AtlasData>& atlasData, const TextConfig& config)
|
|
: Drawable(DrawEncoder::GetDrawEncoder<TextDrawable>()), m_atlasData(atlasData), m_cfg(config)
|
|
{
|
|
if (!atlasData || !*atlasData) throw std::runtime_error("Cannot initialize text drawable with empty atlas data");
|
|
m_uniBuffer.Init(sizeof(TextConfig), &m_cfg, 3);
|
|
m_uniBuffer.binding.stageFlags = ShaderProgramType::FRAGMENT;
|
|
}
|
|
|
|
uint32_t TextDrawable::GetFallbackGlyph() const
|
|
{
|
|
if (m_atlasData->glyphs.find(MISSING_GLYPH_SYMBOL) != m_atlasData->glyphs.end())
|
|
{
|
|
return MISSING_GLYPH_SYMBOL;
|
|
}
|
|
Logger::RENDER->warn("Could not find glyph for character ? to use as fallback. Using first glyph instead");
|
|
return m_atlasData->glyphs.begin()->first;
|
|
}
|
|
|
|
|
|
void TextDrawable::GenerateText(const std::string& text, const Math::Vector3f& pos)
|
|
{
|
|
if (text.empty()) return;
|
|
const uint32_t fallbackGlyph = GetFallbackGlyph();
|
|
|
|
m_text = text;
|
|
|
|
size_t len = utf8::distance(text.begin(), text.end());
|
|
m_geometry.Close();
|
|
m_geometry.Init(len * 4, len * 6);
|
|
AtlasMetadata* meta;
|
|
std::map<uint32_t, GlyphInfo>* symbols;
|
|
symbols = &m_atlasData->glyphs;
|
|
meta = &m_atlasData->meta;
|
|
|
|
double cursorX = pos.x;
|
|
auto begin = text.begin();
|
|
auto end = text.end();
|
|
const double lineHeight = meta->lineHeight;
|
|
double posY = pos.y;
|
|
int i = 0;
|
|
Math::Vector3f bmin(pos), bmax(pos);
|
|
while (begin != end)
|
|
{
|
|
uint32_t c = utf8::next(begin, end);
|
|
if (c == '\n')
|
|
{
|
|
posY -= lineHeight;
|
|
cursorX = pos.x;
|
|
continue;
|
|
}
|
|
|
|
if (symbols->find(c) == symbols->end())
|
|
{
|
|
Logger::RENDER->warn("Could not find glyph for character {}, using fallback", c);
|
|
c = fallbackGlyph;
|
|
}
|
|
|
|
uint32_t vIdx = i * 4;
|
|
uint32_t indices[] = { 1 + vIdx, 2 + vIdx, 3 + vIdx, 1 + vIdx, 3 + vIdx, 0 + vIdx };
|
|
GlyphInfo& info = symbols->at(c);
|
|
|
|
// left bottom
|
|
m_geometry.vertices[vIdx].position.x = info.xyz[0].x + cursorX;
|
|
m_geometry.vertices[vIdx].position.y = posY - info.xyz[0].y;
|
|
m_geometry.vertices[vIdx].position.z = info.xyz[0].z;
|
|
m_geometry.vertices[vIdx].textureCoordinates = Math::Vector3f(info.uv[0], 0);
|
|
|
|
// right bottom
|
|
m_geometry.vertices[vIdx + 1].position.x = info.xyz[1].x + cursorX;
|
|
m_geometry.vertices[vIdx + 1].position.y = posY - info.xyz[1].y;
|
|
m_geometry.vertices[vIdx + 1].position.z = info.xyz[1].z;
|
|
m_geometry.vertices[vIdx + 1].textureCoordinates = Math::Vector3f(info.uv[1], 0);
|
|
|
|
// top right
|
|
m_geometry.vertices[vIdx + 2].position.x = info.xyz[2].x + cursorX;
|
|
m_geometry.vertices[vIdx + 2].position.y = posY + info.xyz[2].y;
|
|
m_geometry.vertices[vIdx + 2].position.z = info.xyz[2].z;
|
|
m_geometry.vertices[vIdx + 2].textureCoordinates = Math::Vector3f(info.uv[2], 0);
|
|
|
|
// top left
|
|
m_geometry.vertices[vIdx + 3].position.x = info.xyz[3].x + cursorX;
|
|
m_geometry.vertices[vIdx + 3].position.y = posY + info.xyz[3].y;
|
|
m_geometry.vertices[vIdx + 3].position.z = info.xyz[3].z;
|
|
m_geometry.vertices[vIdx + 3].textureCoordinates = Math::Vector3f(info.uv[3], 0);
|
|
m_geometry.SetIndices(indices, 6, 6 * i);
|
|
// TODO: change to lower value(or ideally remove completely) to avoid overlapping and make less space between symbols
|
|
// when setting for depth comparison operator will be available( <= )
|
|
cursorX += info.advance + 0.08;
|
|
|
|
bmax.x = std::max(bmax.x, m_geometry.vertices[vIdx + 1].position.x);
|
|
bmax.y = std::max(bmax.y, m_geometry.vertices[vIdx + 2].position.y);
|
|
bmin.y = std::min(bmin.y, m_geometry.vertices[vIdx + 1].position.y);
|
|
++i;
|
|
}
|
|
bmin.x = m_geometry.vertices[0].position.x;
|
|
m_bbox.Init(bmin, bmax);
|
|
|
|
if (!GetShader())
|
|
{
|
|
switch (m_atlasData->meta.atlasType)
|
|
{
|
|
case FontAtlasType::SDF: SetShader(&DEFAULT_SHADER_SDF); break;
|
|
case FontAtlasType::MSDF: SetShader(&DEFAULT_SHADER_MSDF); break;
|
|
default: Logger::RENDER->warn("No default shader for atlas type: {}", m_atlasData->meta.atlasType.GetName());
|
|
case FontAtlasType::BITMAP: SetShader(&DEFAULT_SHADER_BITMAP); break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void TextDrawable::SetAtlasData(const std::shared_ptr<AtlasData>& atlasData)
|
|
{
|
|
if (!atlasData || !*atlasData) throw std::runtime_error("Cannot initialize text drawable with empty atlas data");
|
|
m_atlasData = atlasData;
|
|
}
|
|
} |