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3DS: System font at least draws something legible now

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This commit is contained in:
UnknownShadow200 2023-04-26 22:46:02 +10:00
parent ac7602386e
commit 4760d529d1
1 changed files with 55 additions and 31 deletions
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84
src/SystemFonts.c
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@ -756,8 +756,11 @@ cc_result SysFont_Make(struct FontDesc* desc, const cc_string* fontName, int siz
desc->size = size;
desc->flags = flags;
desc->height = Drawer2D_AdjHeight(size);
desc->handle = fontGetSystemFont();
CFNT_s* font = (CFNT_s*)desc->handle;
int fmt = font->finf.tglp->sheetFmt;
Platform_Log1("Font GPU format: %i", &fmt);
return 0;
}
@ -789,45 +792,62 @@ int SysFont_TextWidth(struct DrawTextArgs* args) {
return max(1, width);
}
static void DrawGlyph(CFNT_s* font, struct Bitmap* bmp, int x, int y, int glyphIndex) {
// see Graphics_3DS.c for more details
static inline cc_uint32 CalcMortonOffset(cc_uint32 x, cc_uint32 y) {
// TODO: Simplify to array lookup?
x = (x | (x << 2)) & 0x33;
x = (x | (x << 1)) & 0x55;
y = (y | (y << 2)) & 0x33;
y = (y | (y << 1)) & 0x55;
return x | (y << 1);
}
static void DrawGlyph(CFNT_s* font, struct Bitmap* bmp, int x, int y, int glyphIndex, int CP, BitmapCol color) {
TGLP_s* tglp = font->finf.tglp;
int fmt = font->finf.tglp->sheetFmt;
if (fmt != GPU_A4) return;
//int glyphsPerSheet = tglp->nRows * tglp->nLines;
//int sheetIdx = glyphIndex / glyphsPerSheet;
//int sheetPos = glyphIndex % glyphsPerSheet;
//u8* sheet = tglp->sheetData + (sheetIdx * tglp->sheetSize);
int glyphsPerSheet = tglp->nRows * tglp->nLines;
int sheetIdx = glyphIndex / glyphsPerSheet;
int sheetPos = glyphIndex % glyphsPerSheet;
u8* sheet = tglp->sheetData + (sheetIdx * tglp->sheetSize);
u8 a;
//int rowY = sheetPos / tglp->nRows;
//int rowX = sheetPos % tglp->nRows;
//int FMT = tglp->sheetFmt;
//Platform_Log1("FMT: %i", &FMT);
int rowY = sheetPos / tglp->nRows;
int rowX = sheetPos % tglp->nRows;
charWidthInfo_s* wInfo = fontGetCharWidthInfo(font, glyphIndex);
//int L = wInfo->left, W = wInfo->glyphWidth;
//Platform_Log3("Draw %r (L=%i, W=%i", &CP, &L, &W);
/*for (int Y = 0; Y < tglp->cellHeight; Y++)
{
for (int X = wInfo->left; X < wInfo->left + wInfo->glyphWidth; X++)
{
int XX = x + X, YY = y + Y;
if (XX < 0 || YY < 0 || XX >= bmp->width || YY >= bmp->height) continue;
int srcX = X + rowX * tglp->cellWidth;
int srcY = Y + rowY * tglp->cellHeight; // TODO wrong. morton offset too?
u8 VALUE = ((sheet + srcY * (tglp->sheetWidth >> 1))[srcX >> 1] & 0x0F) << 4;
Bitmap_GetPixel(bmp, XX, YY) = BitmapColor_RGB(VALUE, VALUE, VALUE);
}
}*/
// TODO not very efficient.. but it works I guess
// Can this be rewritten to use normal Drawer2D's bitmap font rendering somehow?
for (int Y = 0; Y < tglp->cellHeight; Y++)
{
for (int X = wInfo->left; X < wInfo->left + wInfo->glyphWidth; X++)
//for (int X = 0; X < tglp->cellWidth; X++)
{
int XX = x + X, YY = y + Y;
if (XX < 0 || YY < 0 || XX >= bmp->width || YY >= bmp->height) continue;
int dstX = x + X, dstY = y + Y;
if (dstX < 0 || dstY < 0 || dstX >= bmp->width || dstY >= bmp->height) continue;
Bitmap_GetPixel(bmp, XX, YY) = BITMAPCOLOR_WHITE;
int srcX = X + rowX * tglp->cellWidth;
int srcY = Y + rowY * tglp->cellHeight;
int tile_offset = (srcY & ~0x07) * tglp->sheetWidth + (srcX & ~0x07) * 8;
int tile_location = CalcMortonOffset(srcX & 0x07, srcY & 0x07);
// each byte stores two pixels in it
a = sheet[(tile_offset + tile_location) >> 1];
a = (tile_location & 1) ? (a >> 4) : (a & 0x0F);
a = a * 0x11; // 0-15 > 0-255
Bitmap_GetPixel(bmp, dstX, dstY) = BitmapColor_RGB(
((BitmapCol_R(color) * a) >> 8),
((BitmapCol_G(color) * a) >> 8),
((BitmapCol_B(color) * a) >> 8));
}
}
}
@ -836,16 +856,20 @@ void SysFont_DrawText(struct DrawTextArgs* args, struct Bitmap* bmp, int x, int
cc_string left = args->text, part;
char colorCode = 'f';
CFNT_s* font = (CFNT_s*)args->font->handle;
BitmapCol color;
while (Drawer2D_UNSAFE_NextPart(&left, &part, &colorCode))
{
color = Drawer2D_GetColor(colorCode);
if (shadow) color = GetShadowColor(color);
for (int i = 0; i < part.length; i++)
{
cc_unichar cp = Convert_CP437ToUnicode(part.buffer[i]);
int glyphIndex = fontGlyphIndexFromCodePoint(font, cp);
if (glyphIndex < 0) continue;
DrawGlyph(font, bmp, x, y, glyphIndex);
DrawGlyph(font, bmp, x, y, glyphIndex, cp, color);
charWidthInfo_s* wInfo = fontGetCharWidthInfo(font, glyphIndex);
x += wInfo->charWidth;
}