basic text drawing function from PCSX

diff --git a/fonts.c b/fonts.c
index ea65481..cbad3c6 100644 (file)
--- a/fonts.c
+++ b/fonts.c
@@ -1,3 +1,6 @@
+#include <stdio.h>
+#include <stdarg.h>
+
 unsigned char fontdata8x8[64*16] =
 {
        0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
@@ -216,3 +219,56 @@ unsigned char fontdata6x8[256][8] = {
 { 0x00>>2, 0x10>>2, 0x10>>2, 0x28>>2, 0x28>>2, 0x44>>2, 0x7c>>2, 0x00>>2, },
 };
 
+/* note: may use 1 extra pixel on the right */
+void basic_text_out16_nf(void *fb, int w, int x, int y, const char *text)
+{
+       int i, l;
+       unsigned short *screen;
+       unsigned short val = 0xffff;
+
+       screen = (unsigned short *)fb + x + y * w;
+       for (i = 0; ; i++, screen += 8)
+       {
+               char c = text[i];
+               if (c == 0)
+                       break;
+               if (c == ' ')
+                       continue;
+
+               for (l = 0; l < 8; l++)
+               {
+                       unsigned char fd = fontdata8x8[c * 8 + l];
+                       unsigned short *s = screen + l * w;
+                       unsigned char fd1, fdp = 0;
+
+                       if (fd&0x80) s[0] = val;
+                       if (fd&0x40) s[1] = val;
+                       if (fd&0x20) s[2] = val;
+                       if (fd&0x10) s[3] = val;
+                       if (fd&0x08) s[4] = val;
+                       if (fd&0x04) s[5] = val;
+                       if (fd&0x02) s[6] = val;
+                       if (fd&0x01) s[7] = val;
+
+                       // draw "shadow"
+                       if (l > 0)
+                               fdp = fontdata8x8[c * 8 + l - 1];
+
+                       for (fd1 = 0x80; fd1 != 0; fd1 >>= 1, s++)
+                               if (!(fd & (fd1 >> 1)) && ((fdp | fd) & fd1))
+                                       s[1] = (s[1] >> 1) & 0x7bef;
+               }
+       }
+}
+
+void basic_text_out16(void *fb, int w, int x, int y, const char *texto, ...)
+{
+       va_list args;
+       char    buffer[256];
+
+       va_start(args, texto);
+       vsnprintf(buffer, sizeof(buffer), texto, args);
+       va_end(args);
+
+       basic_text_out16_nf(fb, w, x, y, buffer);
+}

diff --git a/fonts.h b/fonts.h
index dbbdd4c..b66993c 100644 (file)
--- a/fonts.h
+++ b/fonts.h
@@ -2,3 +2,5 @@
 extern unsigned char fontdata8x8[64*16];
 extern unsigned char fontdata6x8[256-32][8];
 
+void basic_text_out16_nf(void *fb, int w, int x, int y, const char *text);
+void basic_text_out16(void *fb, int w, int x, int y, const char *texto, ...);