// Load a SpriteFont image into GPU memory
SpriteFont LoadSpriteFont(const char *fileName)
{
// Default hardcoded values for ttf file loading
#define DEFAULT_TTF_FONTSIZE 32 // Font first character (32 - space)
#define DEFAULT_TTF_NUMCHARS 95 // ASCII 32..126 is 95 glyphs
#define DEFAULT_FIRST_CHAR 32 // Expected first char for image spritefont
SpriteFont spriteFont = { 0 };
// Check file extension
if (strcmp(GetExtension(fileName),"rbmf") == 0) spriteFont = LoadRBMF(fileName);
else if (strcmp(GetExtension(fileName),"ttf") == 0) spriteFont = LoadSpriteFontTTF(fileName, DEFAULT_TTF_FONTSIZE, 0, NULL);
else if (strcmp(GetExtension(fileName),"fnt") == 0) spriteFont = LoadBMFont(fileName);
else
{
Image image = LoadImage(fileName);
if (image.data != NULL) spriteFont = LoadImageFont(image, MAGENTA, DEFAULT_FIRST_CHAR);
UnloadImage(image);
}
if (spriteFont.texture.id == 0)
{
TraceLog(WARNING, "[%s] SpriteFont could not be loaded, using default font", fileName);
spriteFont = GetDefaultFont();
}
else SetTextureFilter(spriteFont.texture, FILTER_POINT); // By default we set point filter (best performance)
return spriteFont;
}
// Load a SpriteFont image into GPU memory
SpriteFont LoadSpriteFont(const char* fileName)
{
SpriteFont spriteFont;
Image image;
// Check file extension
if (strcmp(GetExtension(fileName),"rbmf") == 0) spriteFont = LoadRBMF(fileName);
else
{
// Use stb_image to load image data!
int imgWidth;
int imgHeight;
int imgBpp;
byte *imgData = stbi_load(fileName, &imgWidth, &imgHeight, &imgBpp, 4); // Force loading to 4 components (RGBA)
// Convert array to pixel array for working convenience
Color *imgDataPixel = (Color *)malloc(imgWidth * imgHeight * sizeof(Color));
Color *imgDataPixelPOT = NULL;
int pix = 0;
for (int i = 0; i < (imgWidth * imgHeight * 4); i += 4)
{
imgDataPixel[pix].r = imgData[i];
imgDataPixel[pix].g = imgData[i+1];
imgDataPixel[pix].b = imgData[i+2];
imgDataPixel[pix].a = imgData[i+3];
pix++;
}
stbi_image_free(imgData);
// At this point we have a pixel array with all the data...
// Process bitmap Font pixel data to get measures (Character array)
// spriteFont.charSet data is filled inside the function and memory is allocated!
int numChars = ParseImageData(imgDataPixel, imgWidth, imgHeight, &spriteFont.charSet);
TraceLog(INFO, "[%s] SpriteFont data parsed correctly", fileName);
TraceLog(INFO, "[%s] SpriteFont num chars detected: %i", numChars);
spriteFont.numChars = numChars;
// Convert image font to POT image before conversion to texture
// Just add the required amount of pixels at the right and bottom sides of image...
int potWidth = GetNextPOT(imgWidth);
int potHeight = GetNextPOT(imgHeight);
// Check if POT texture generation is required (if texture is not already POT)
if ((potWidth != imgWidth) || (potHeight != imgHeight))
{
// Generate POT array from NPOT data
imgDataPixelPOT = (Color *)malloc(potWidth * potHeight * sizeof(Color));
for (int j = 0; j < potHeight; j++)
{
for (int i = 0; i < potWidth; i++)
{
if ((j < imgHeight) && (i < imgWidth)) imgDataPixelPOT[j*potWidth + i] = imgDataPixel[j*imgWidth + i];
else imgDataPixelPOT[j*potWidth + i] = MAGENTA;
}
}
TraceLog(WARNING, "SpriteFont texture converted to POT: %ix%i", potWidth, potHeight);
}
free(imgDataPixel);
image.pixels = imgDataPixelPOT;
image.width = potWidth;
image.height = potHeight;
spriteFont.texture = CreateTexture(image, false); // Convert loaded image to OpenGL texture
UnloadImage(image);
}
return spriteFont;
}
