Files
palladium/backends/3ds/source/pd-3ds.cpp
tobid7 4ad00cd2be pd-3ds: Add sysfont loader
- add support for Alpha only textures in rendering
2025-12-19 21:07:57 +01:00

132 lines
5.1 KiB
C++
Executable File

/*
MIT License
Copyright (c) 2024 - 2025 tobid7
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include <3ds.h>
#include <palladium>
#include <pd-3ds.hpp>
namespace PD {
PD::Li::Font::Ref LoadSystemFont() {
TT::Scope st("LI_SystemFont"); // Trace loading time
Li::Font::Ref ret = Li::Font::New();
fontEnsureMapped(); // Call this to be sure the font is mapped
// Get some const references for system font loading
const auto fnt = fontGetSystemFont();
const auto fnt_info = fontGetInfo(fnt);
const auto glyph_info = fontGetGlyphInfo(fnt);
// Resize the Texture list by the num of sysfont textures
ret->Textures.resize(glyph_info->nSheets + 1);
/// Modify the Pixel Height by 1.1f to fit the
/// Size og ttf font Rendering
ret->PixelHeight = glyph_info->cellHeight;
// Load the Textures and make sure they don't auto unload
for (size_t i = 0; i < glyph_info->nSheets; i++) {
auto stex = Li::Texture::New();
auto tx = new C3D_Tex;
tx->data = fontGetGlyphSheetTex(fnt, i);
tx->fmt = (GPU_TEXCOLOR)glyph_info->sheetFmt;
tx->size = glyph_info->sheetSize;
tx->width = glyph_info->sheetWidth;
tx->height = glyph_info->sheetHeight;
tx->param = GPU_TEXTURE_MAG_FILTER(GPU_LINEAR) |
GPU_TEXTURE_MIN_FILTER(GPU_LINEAR) |
GPU_TEXTURE_WRAP_S(GPU_REPEAT) | GPU_TEXTURE_WRAP_T(GPU_REPEAT);
tx->border = 0xffffffff;
tx->lodParam = 0;
stex->Address = (Li::TexAddress)tx;
stex->Size = fvec2(tx->width, tx->height);
stex->UV = fvec4(0, 1, 1, 0);
ret->Textures[i] = stex;
}
std::vector<unsigned int> charSet;
// Write the Charset into a vector
for (auto cmap = fnt_info->cmap; cmap; cmap = cmap->next) {
if (cmap->mappingMethod == CMAP_TYPE_DIRECT) {
if (cmap->codeEnd >= cmap->codeBegin) {
charSet.reserve(charSet.size() + cmap->codeEnd - cmap->codeBegin + 1);
for (auto i = cmap->codeBegin; i <= cmap->codeEnd; ++i) {
if (cmap->indexOffset + (i - cmap->codeBegin) == 0xFFFF) break;
charSet.emplace_back(i);
}
}
} else if (cmap->mappingMethod == CMAP_TYPE_TABLE) {
if (cmap->codeEnd >= cmap->codeBegin) {
charSet.reserve(charSet.size() + cmap->codeEnd - cmap->codeBegin + 1);
for (auto i = cmap->codeBegin; i <= cmap->codeEnd; ++i) {
if (cmap->indexTable[i - cmap->codeBegin] == 0xFFFF) continue;
charSet.emplace_back(i);
}
}
} else if (cmap->mappingMethod == CMAP_TYPE_SCAN) {
charSet.reserve(charSet.size() + cmap->nScanEntries);
for (unsigned i = 0; i < cmap->nScanEntries; ++i) {
if (cmap->scanEntries[i].code >= cmap->codeBegin &&
cmap->scanEntries[i].code <= cmap->codeEnd) {
if (cmap->scanEntries[i].glyphIndex != 0xFFFF) {
charSet.emplace_back(cmap->scanEntries[i].code);
}
}
}
} else {
continue;
}
}
// Sort the charset and make sure all values are unique
std::sort(charSet.begin(), charSet.end());
charSet.erase(std::unique(charSet.begin(), charSet.end()));
// Setup the Codepoint map by the charset
for (auto cp : charSet) {
int gidx = fontGlyphIndexFromCodePoint(fnt, cp);
if (gidx >= 0xFFFF) continue;
Li::Font::Codepoint codepoint;
fontGlyphPos_s dat;
fontCalcGlyphPos(&dat, fnt, gidx, GLYPH_POS_CALC_VTXCOORD, 1.f, 1.f);
codepoint.pCodepoint = cp;
codepoint.SimpleUV = fvec4(dat.texcoord.left, dat.texcoord.top,
dat.texcoord.right, dat.texcoord.bottom);
if (dat.sheetIndex < (int)ret->Textures.size()) {
codepoint.Tex = ret->Textures[dat.sheetIndex];
} else {
codepoint.pInvalid = true;
}
codepoint.Size = fvec2(dat.vtxcoord.right, dat.vtxcoord.bottom);
codepoint.Offset = 0;
ret->CodeMap[cp] = codepoint;
}
return ret;
}
void Init(void* data) {
// Dekstop Init Stage
// First use default OS Driver
PD::OS::Init();
PD::Gfx::Init(PD::GfxC3D::New());
PD::Hid::Init(PD::Hid3DS::New());
}
} // namespace PD