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pre-scale bitmap fonts

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This commit is contained in:
Toad King 2012-12-14 15:50:59 -05:00
parent b448cee01e
commit 278c2cca10
1 changed files with 23 additions and 29 deletions
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52
gfx/fonts/bitmapfont.c
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@ -19,26 +19,27 @@
#include <stdlib.h> #include <stdlib.h>
#include <stdbool.h> #include <stdbool.h>
#include "../../general.h"
static uint8_t bitmap_chars[256][50];
struct font_renderer struct font_renderer
{ {
unsigned scale_factor; unsigned scale_factor;
uint8_t *bitmap_chars[256];
uint8_t *bitmap_alloc;
}; };
static void char_to_texture(uint8_t letter, uint8_t *buffer) static void char_to_texture(font_renderer_t *handle, uint8_t letter)
{ {
for (unsigned j = 0; j < FONT_HEIGHT; j++) handle->bitmap_chars[letter] = &handle->bitmap_alloc[letter * FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor];
for (unsigned y = 0; y < FONT_HEIGHT; y++)
{ {
for (unsigned i = 0; i < FONT_WIDTH; i++) for (unsigned x = 0; x < FONT_WIDTH; x++)
{ {
uint8_t rem = 1 << ((i + j * FONT_WIDTH) & 7); uint8_t rem = 1 << ((x + y * FONT_WIDTH) & 7);
unsigned offset = (i + j * FONT_WIDTH) >> 3; unsigned offset = (x + y * FONT_WIDTH) >> 3;
bool col = (bitmap_bin[FONT_OFFSET(letter) + offset] & rem); uint8_t col = (bitmap_bin[FONT_OFFSET(letter) + offset] & rem) ? 0xFF : 0;
buffer[i + j * FONT_WIDTH] = col ? 0xFF : 0; for (unsigned xo = 0; xo < handle->scale_factor; xo++)
for (unsigned yo = 0; yo < handle->scale_factor; yo++)
handle->bitmap_chars[letter][x * handle->scale_factor + xo + (y * handle->scale_factor + yo) * FONT_WIDTH * handle->scale_factor] = col;
} }
} }
} }
@ -53,10 +54,17 @@ static void *font_renderer_init(const char *font_path, unsigned font_size)
handle->scale_factor = font_size / FONT_HEIGHT; handle->scale_factor = font_size / FONT_HEIGHT;
if (!handle->scale_factor) if (!handle->scale_factor)
handle->scale_factor = 1; handle->scale_factor = 1;
RARCH_LOG("scale_factor: %d\n", handle->scale_factor);
handle->bitmap_alloc = malloc(FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor * 256);
if (!handle->bitmap_alloc)
{
free(handle);
return NULL;
}
for (unsigned i = 0; i < 256; i++) for (unsigned i = 0; i < 256; i++)
char_to_texture(i, bitmap_chars[i]); char_to_texture(handle, i);
return handle; return handle;
} }
@ -76,20 +84,7 @@ static void font_renderer_msg(void *data, const char *msg, struct font_output_li
if (!tmp) if (!tmp)
break; break;
tmp->output = (uint8_t*)malloc(FONT_WIDTH * FONT_HEIGHT * handle->scale_factor * handle->scale_factor); tmp->output = handle->bitmap_chars[(unsigned) msg[i]];
if (!tmp->output)
{
free(tmp);
break;
}
unsigned msg_char = msg[i];
for (unsigned x = 0; x < FONT_WIDTH; x++)
for (unsigned y = 0; y < FONT_HEIGHT; y++)
for (unsigned xo = 0; xo < handle->scale_factor; xo++)
for (unsigned yo = 0; yo < handle->scale_factor; yo++)
tmp->output[x * handle->scale_factor + xo + (y * handle->scale_factor + yo) * FONT_WIDTH * handle->scale_factor] = bitmap_chars[msg_char][x + y * FONT_WIDTH];
tmp->width = FONT_WIDTH * handle->scale_factor; tmp->width = FONT_WIDTH * handle->scale_factor;
tmp->height = FONT_HEIGHT * handle->scale_factor; tmp->height = FONT_HEIGHT * handle->scale_factor;
tmp->pitch = tmp->width; tmp->pitch = tmp->width;
@ -119,7 +114,6 @@ static void font_renderer_free_output(void *data, struct font_output_list *outpu
struct font_output *tmp = NULL; struct font_output *tmp = NULL;
while (itr != NULL) while (itr != NULL)
{ {
free(itr->output);
tmp = itr; tmp = itr;
itr = itr->next; itr = itr->next;
free(tmp); free(tmp);
@ -130,6 +124,7 @@ static void font_renderer_free_output(void *data, struct font_output_list *outpu
static void font_renderer_free(void *data) static void font_renderer_free(void *data)
{ {
font_renderer_t *handle = (font_renderer_t*)data; font_renderer_t *handle = (font_renderer_t*)data;
free(handle->bitmap_alloc);
free(handle); free(handle);
} }
@ -146,4 +141,3 @@ const font_renderer_driver_t bitmap_font_renderer = {
font_renderer_get_default_font, font_renderer_get_default_font,
"bitmap", "bitmap",
}; };