mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-12-27 11:41:49 +01:00
993 lines
24 KiB
C++
993 lines
24 KiB
C++
/****************************************************************************
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* Snes9x 1.50
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*
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* Nintendo Gamecube Screen Font Driver
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*
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* Uses libfreetype 2.2.1 compiled for GC with TTF support only.
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* TTF only reduces the library by some 900k bytes!
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*
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* Visit - http://www.freetype.org !
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*
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* **WARNING***
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*
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* ONLY USE GUARANTEED PATENT FREE FONTS.
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* THOSE IN YOUR WINDOWS\FONTS DIRECTORY ARE COPYRIGHT
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* AND MAY NOT BE DISTRIBUTED!
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*
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* softdev July 2006
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* crunchy2 June 2007
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****************************************************************************/
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#include <gccore.h>
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#include <ogcsys.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <wiiuse/wpad.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include "video.h"
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#include "menudraw.h"
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#include "dkpro.h"
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#include "snes9xGX.h"
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#include "memmap.h"
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#include "aram.h"
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#include <zlib.h>
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#include "gfx_bg.h"
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/*** Globals ***/
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FT_Library ftlibrary;
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FT_Face face;
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FT_GlyphSlot slot;
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FT_UInt glyph_index;
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static unsigned int fonthi, fontlo;
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extern char fontface[]; /*** From fontface.s ***/
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extern int fontsize; /*** From fontface.s ***/
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extern int screenheight;
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extern unsigned int *xfb[2];
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extern int whichfb;
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/****************************************************************************
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* Unpack the devkit pro logo
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****************************************************************************/
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static u32 *dkproraw;
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/*** Permanent backdrop ***/
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#ifdef HW_RVL
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u32 *backdrop;
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#else
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static u32 *backdrop;
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#endif
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unsigned int getcolour (u8 r1, u8 g1, u8 b1);
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void DrawLineFast( int startx, int endx, int y, u8 r, u8 g, u8 b );
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u32 getrgb( u32 ycbr, u32 low );
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/****************************************************************************
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* Initialisation of libfreetype
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****************************************************************************/
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int
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FT_Init ()
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{
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int err;
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err = FT_Init_FreeType (&ftlibrary);
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if (err)
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return 1;
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err =
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FT_New_Memory_Face (ftlibrary, (FT_Byte *) fontface, fontsize, 0, &face);
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if (err)
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return 1;
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setfontsize (16);
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setfontcolour (0xff, 0xff, 0xff);
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slot = face->glyph;
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return 0;
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}
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/****************************************************************************
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* setfontsize
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*
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* Set the screen font size in pixels
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****************************************************************************/
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void
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setfontsize (int pixelsize)
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{
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int err;
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err = FT_Set_Pixel_Sizes (face, 0, pixelsize);
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if (err)
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printf ("Error setting pixel sizes!");
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}
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/****************************************************************************
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* DrawCharacter
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* Draws a single character on the screen
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****************************************************************************/
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static void
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DrawCharacter (FT_Bitmap * bmp, FT_Int x, FT_Int y)
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{
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FT_Int i, j, p, q;
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FT_Int x_max = x + bmp->width;
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FT_Int y_max = y + bmp->rows;
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int spos;
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unsigned int pixel;
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int c;
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for (i = x, p = 0; i < x_max; i++, p++)
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{
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for (j = y, q = 0; j < y_max; j++, q++)
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{
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if (i < 0 || j < 0 || i >= 640 || j >= screenheight)
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continue;
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/*** Convert pixel position to GC int sizes ***/
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spos = (j * 320) + (i >> 1);
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pixel = xfb[whichfb][spos];
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c = bmp->buffer[q * bmp->width + p];
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/*** Cool Anti-Aliasing doesn't work too well at hires on GC ***/
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if (c > 128)
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{
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if (i & 1)
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pixel = (pixel & 0xffff0000) | fontlo;
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else
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pixel = ((pixel & 0xffff) | fonthi);
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xfb[whichfb][spos] = pixel;
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}
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}
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}
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}
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/****************************************************************************
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* DrawText
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*
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* Place the font bitmap on the screen
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****************************************************************************/
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void
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DrawText (int x, int y, char *text)
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{
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int px, n;
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int i;
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int err;
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int value, count;
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n = strlen (text);
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if (n == 0)
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return;
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setfontcolour (0x00, 0x00, 0x00);
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/*** x == -1, auto centre ***/
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if (x == -1)
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{
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value = 0;
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px = 0;
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}
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else
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{
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value = 1;
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px = x;
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}
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for (count = value; count < 2; count++)
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{
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/*** Draw the string ***/
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for (i = 0; i < n; i++)
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{
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err = FT_Load_Char (face, text[i], FT_LOAD_RENDER);
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if (err)
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{
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printf ("Error %c %d\n", text[i], err);
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continue; /*** Skip unprintable characters ***/
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}
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if (count)
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DrawCharacter (&slot->bitmap, px + slot->bitmap_left,
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y - slot->bitmap_top);
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px += slot->advance.x >> 6;
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}
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px = (640 - px) >> 1;
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}
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}
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/****************************************************************************
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* setfontcolour
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*
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* Uses RGB triple values.
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****************************************************************************/
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void
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setfontcolour (u8 r, u8 g, u8 b)
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{
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u32 fontcolour;
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fontcolour = getcolour (r, g, b);
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fonthi = fontcolour & 0xffff0000;
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fontlo = fontcolour & 0xffff;
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}
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/****************************************************************************
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* dkunpack
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*
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* Support function to expand the DevkitPro logo
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****************************************************************************/
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int
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dkunpack ()
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{
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unsigned long res, inbytes, outbytes;
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inbytes = dkpro_COMPRESSED;
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outbytes = dkpro_RAW;
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dkproraw = (u32 *) malloc (dkpro_RAW + 16);
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res = uncompress ((Bytef *) dkproraw, &outbytes, (Bytef *) dkpro, inbytes);
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if (res == Z_OK)
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return 1;
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return 0;
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}
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/****************************************************************************
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* showdklogo
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*
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* Display the DevkitPro logo
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****************************************************************************/
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void
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showdklogo ()
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{
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int w, h, p, dispoffset;
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p = 0;
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dispoffset =
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((screenheight != 480 ? 365 : 355) * 320) + ((640 - dkpro_WIDTH) >> 2);
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dkunpack ();
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for (h = 0; h < dkpro_HEIGHT; h++)
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{
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for (w = 0; w < dkpro_WIDTH >> 1; w++)
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{
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if (dkproraw[p] != 0x00800080)
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xfb[whichfb][dispoffset + w] = dkproraw[p++];
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else
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p++;
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}
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dispoffset += 320;
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}
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free (dkproraw);
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}
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/****************************************************************************
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* Display credits, legal copyright and licence
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*
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* THIS MUST NOT BE REMOVED IN ANY DERIVATIVE WORK.
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****************************************************************************/
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void
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Credits ()
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{
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clearscreen ();
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setfontcolour (0x00, 0x00, 0x00);
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setfontsize (28);
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DrawText (-1, 60, (char*)"Credits");
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int ypos = 25;
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if (screenheight == 480)
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ypos += 52;
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else
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ypos += 32;
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setfontsize (18);
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DrawText (-1, ypos += 30, (char*)"Technical");
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setfontsize (14);
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DrawText (-1, ypos += 22, (char*)"Snes9x v1.5.1 - Snes9x Team");
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DrawText (-1, ypos += 18, (char*)"GameCube Port 2.0 WIP6 and earlier - SoftDev");
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DrawText (-1, ypos += 18, (char*)"Additional improvements to 2.0 WIP6 - eke-eke");
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DrawText (-1, ypos += 18, (char*)"GameCube 2.0.1bx enhancements - crunchy2");
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DrawText (-1, ypos += 18, (char*)"v00x updates - michniewski & Tantric");
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DrawText (-1, ypos += 18, (char*)"GX - http://www.gc-linux.org");
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DrawText (-1, ypos += 18, (char*)"libogc - Shagkur & wintermute");
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setfontsize (18);
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DrawText (-1, ypos += 30, (char*)"Testing");
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setfontsize (14);
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DrawText (-1, ypos += 22, (char*)"crunchy2 / tehskeen users / others");
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setfontsize (18);
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DrawText (-1, ypos += 30, (char*)"Documentation");
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setfontsize (14);
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DrawText (-1, ypos += 22, (char*)"brakken, crunchy2, michniewski");
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setfontsize (12);
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DrawText (-1, ypos += 50, (char*)"Snes9x - Copyright (c) Snes9x Team 1996 - 2006");
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DrawText (-1, ypos += 15, (char*)"This software is open source and may be copied, distributed, or modified");
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DrawText (-1, ypos += 15, (char*)"under the terms of the GNU General Public License (GPL) Version 2.");
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showscreen ();
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}
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/****************************************************************************
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* getcolour
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*
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* Simply converts RGB to Y1CbY2Cr format
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*
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* I got this from a pastebin, so thanks to whoever originally wrote it!
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****************************************************************************/
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unsigned int
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getcolour (u8 r1, u8 g1, u8 b1)
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{
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int y1, cb1, cr1, y2, cb2, cr2, cb, cr;
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u8 r2, g2, b2;
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r2 = r1;
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g2 = g1;
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b2 = b1;
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y1 = (299 * r1 + 587 * g1 + 114 * b1) / 1000;
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cb1 = (-16874 * r1 - 33126 * g1 + 50000 * b1 + 12800000) / 100000;
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cr1 = (50000 * r1 - 41869 * g1 - 8131 * b1 + 12800000) / 100000;
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y2 = (299 * r2 + 587 * g2 + 114 * b2) / 1000;
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cb2 = (-16874 * r2 - 33126 * g2 + 50000 * b2 + 12800000) / 100000;
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cr2 = (50000 * r2 - 41869 * g2 - 8131 * b2 + 12800000) / 100000;
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cb = (cb1 + cb2) >> 1;
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cr = (cr1 + cr2) >> 1;
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return ((y1 << 24) | (cb << 16) | (y2 << 8) | cr);
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}
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/****************************************************************************
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* Unpackbackdrop
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****************************************************************************/
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void
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unpackbackdrop ()
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{
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unsigned long res, inbytes, outbytes;
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unsigned int colour;
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int offset;
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int i;
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// backdrop = (unsigned int *) malloc (screenheight * 1280);
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backdrop = (u32 *) malloc (screenheight * 1280);
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colour = getcolour (0x00, 0x00, 0x00);
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/*** Fill with black for now ***/
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for (i = 0; i < (320 * screenheight); i++)
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backdrop[i] = colour;
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/*** If it's PAL50, need to move down a few lines ***/
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offset = ((screenheight - 480) >> 1) * 320;
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inbytes = BG_COMPRESSED;
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outbytes = BG_RAW;
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res =
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uncompress ((Bytef *) backdrop + offset, &outbytes, (Bytef *) bg,
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inbytes);
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#ifndef HW_RVL
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/*** Now store the backdrop in ARAM ***/
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ARAMPut ((char *) backdrop, (char *) AR_BACKDROP, 640 * screenheight * 2);
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free (backdrop);
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#endif
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// otherwise (on wii) backdrop is stored in memory
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}
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/****************************************************************************
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* Wait for user to press A
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****************************************************************************/
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void
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WaitButtonA ()
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{
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#ifdef HW_RVL
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while ( (PAD_ButtonsDown (0) & PAD_BUTTON_A) || (WPAD_ButtonsDown(0) & (WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A)) ) VIDEO_WaitVSync();
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while (!(PAD_ButtonsDown (0) & PAD_BUTTON_A) && !(WPAD_ButtonsDown(0) & (WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A)) ) VIDEO_WaitVSync();
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#else
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while ( PAD_ButtonsDown (0) & PAD_BUTTON_A ) VIDEO_WaitVSync();
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while (!(PAD_ButtonsDown (0) & PAD_BUTTON_A) ) VIDEO_WaitVSync();
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#endif
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}
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/****************************************************************************
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* Wait for user to press A or B. Returns 0 = B; 1 = A
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****************************************************************************/
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int
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WaitButtonAB ()
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{
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#ifdef HW_RVL
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u32 gc_btns, wm_btns;
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while ( (PAD_ButtonsDown (0) & (PAD_BUTTON_A | PAD_BUTTON_B))
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|| (WPAD_ButtonsDown(0) & (WPAD_BUTTON_A | WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_A | WPAD_CLASSIC_BUTTON_B))
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) VIDEO_WaitVSync();
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while ( TRUE )
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{
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gc_btns = PAD_ButtonsDown (0);
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wm_btns = WPAD_ButtonsDown (0);
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if ( (gc_btns & PAD_BUTTON_A) || (wm_btns & (WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A)) )
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return 1;
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else if ( (gc_btns & PAD_BUTTON_B) || (wm_btns & (WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_B)) )
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return 0;
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}
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#else
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u32 gc_btns;
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while ( (PAD_ButtonsDown (0) & (PAD_BUTTON_A | PAD_BUTTON_B)) ) VIDEO_WaitVSync();
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while ( TRUE )
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{
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gc_btns = PAD_ButtonsDown (0);
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if ( gc_btns & PAD_BUTTON_A )
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return 1;
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else if ( gc_btns & PAD_BUTTON_B )
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return 0;
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}
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#endif
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}
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/****************************************************************************
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* Show a prompt
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****************************************************************************/
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void
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WaitPrompt (char *msg)
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{
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int ypos = (screenheight - 64) >> 1;
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if (screenheight == 480)
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ypos += 52;
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else
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ypos += 32;
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clearscreen ();
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DrawText (-1, ypos, msg);
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ypos += 30;
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DrawText (-1, ypos, (char*)"Press A to continue");
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showscreen ();
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WaitButtonA ();
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}
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/****************************************************************************
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* Show a prompt with choice of two options. Returns 1 if A button was pressed
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and 0 if B button was pressed.
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****************************************************************************/
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int
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WaitPromptChoice (char *msg, char *bmsg, char *amsg)
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{
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int ypos = (screenheight - 64) >> 1;
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if (screenheight == 480)
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ypos += 37;
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else
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ypos += 17;
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clearscreen ();
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DrawText (-1, ypos, msg);
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ypos += 60;
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char txt[80];
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sprintf (txt, "B = %s : A = %s", bmsg, amsg);
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DrawText (-1, ypos, txt);
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showscreen ();
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return WaitButtonAB ();
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}
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/****************************************************************************
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* Show an action in progress
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****************************************************************************/
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void
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ShowAction (char *msg)
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{
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int ypos = (screenheight - 30) >> 1;
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if (screenheight == 480)
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ypos += 52;
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else
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ypos += 32;
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clearscreen ();
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DrawText (-1, ypos, msg);
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showscreen ();
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}
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/****************************************************************************
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* Generic Menu Routines
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****************************************************************************/
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void
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DrawMenu (char items[][50], char *title, int maxitems, int selected, int fontsize, int x)
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{
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int i, w = 0;
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int ypos = 0;
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int n = 1;
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int line_height;
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ypos = 65;
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if (screenheight == 480)
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ypos += 52;
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else
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ypos += 32;
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clearscreen ();
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setfontcolour (0, 0, 0);
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if (title != NULL)
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{
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setfontsize (28);
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DrawText (-1, 60, title);
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}
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setfontsize (12);
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DrawText (510, screenheight - 20, (char *)"Snes9x GX 005");
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// Draw menu items
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setfontsize (fontsize); // set font size
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line_height = (fontsize + 8);
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for (i = 0; i < maxitems; i++)
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{
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if(strlen(items[i]) > 0)
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{
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if ( items[i] == NULL )
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ypos -= line_height;
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else if (i == selected)
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{
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for( w = 0; w < line_height; w++ )
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DrawLineFast( 30, 610, n * line_height + (ypos-line_height+6) + w, 0x80, 0x80, 0x80 );
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|
|
setfontcolour (0xff, 0xff, 0xff);
|
|
DrawText (x, n * line_height + ypos, items[i]);
|
|
setfontcolour (0x00, 0x00, 0x00);
|
|
}
|
|
else
|
|
{
|
|
DrawText (x, n * line_height + ypos, items[i]);
|
|
}
|
|
n++;
|
|
}
|
|
}
|
|
|
|
showscreen ();
|
|
|
|
}
|
|
|
|
/****************************************************************************
|
|
* FindMenuItem
|
|
*
|
|
* Help function to find the next visible menu item on the list
|
|
* Supports menu wrap-around
|
|
****************************************************************************/
|
|
|
|
int FindMenuItem(char items[][50], int maxitems, int currentItem, int direction)
|
|
{
|
|
int nextItem = currentItem + direction;
|
|
|
|
if(nextItem < 0)
|
|
nextItem = maxitems-1;
|
|
else if(nextItem >= maxitems)
|
|
nextItem = 0;
|
|
|
|
if(strlen(items[nextItem]) > 0)
|
|
return nextItem;
|
|
else
|
|
return FindMenuItem(&items[0], maxitems, nextItem, direction);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* RunMenu
|
|
*
|
|
* Call this with the menu array defined in menu.cpp
|
|
* It's here to keep all the font / interface stuff together.
|
|
****************************************************************************/
|
|
int menu = 0;
|
|
|
|
int
|
|
RunMenu (char items[][50], int maxitems, char *title, int fontsize, int x)
|
|
{
|
|
int redraw = 1;
|
|
int quit = 0;
|
|
u32 p, wp;
|
|
int ret = 0;
|
|
signed char a;
|
|
float mag = 0;
|
|
float mag2 = 0;
|
|
u16 ang = 0;
|
|
u16 ang2 = 0;
|
|
|
|
while (quit == 0)
|
|
{
|
|
if (redraw)
|
|
{
|
|
DrawMenu (&items[0], title, maxitems, menu, fontsize);
|
|
redraw = 0;
|
|
}
|
|
|
|
p = PAD_ButtonsDown (0);
|
|
#ifdef HW_RVL
|
|
wp = WPAD_ButtonsDown (0);
|
|
wpad_get_analogues(0, &mag, &ang, &mag2, &ang2); // get joystick info from wii expansions
|
|
#else
|
|
wp = 0;
|
|
#endif
|
|
a = PAD_StickY (0);
|
|
|
|
VIDEO_WaitVSync(); // slow things down a bit so we don't overread the pads
|
|
|
|
/*** Look for up ***/
|
|
if ( (p & PAD_BUTTON_UP) || (wp & (WPAD_BUTTON_UP | WPAD_CLASSIC_BUTTON_UP)) || (a > 70) || (mag>JOY_THRESHOLD && (ang>300 || ang<50)) )
|
|
{
|
|
redraw = 1;
|
|
menu = FindMenuItem(&items[0], maxitems, menu, -1);
|
|
}
|
|
|
|
/*** Look for down ***/
|
|
if ( (p & PAD_BUTTON_DOWN) || (wp & (WPAD_BUTTON_DOWN | WPAD_CLASSIC_BUTTON_DOWN)) || (a < -70) || (mag>JOY_THRESHOLD && (ang>130 && ang<230)) )
|
|
{
|
|
redraw = 1;
|
|
menu = FindMenuItem(&items[0], maxitems, menu, +1);
|
|
}
|
|
|
|
if ((p & PAD_BUTTON_A) || (wp & (WPAD_BUTTON_A | WPAD_CLASSIC_BUTTON_A)))
|
|
{
|
|
quit = 1;
|
|
ret = menu;
|
|
}
|
|
|
|
if ((p & PAD_BUTTON_B) || (wp & (WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_B)))
|
|
{
|
|
quit = -1;
|
|
ret = -1;
|
|
}
|
|
}
|
|
|
|
/*** Wait for B button to be released before proceeding ***/
|
|
while ( (PAD_ButtonsDown(0) & PAD_BUTTON_B)
|
|
#ifdef HW_RVL
|
|
|| (WPAD_ButtonsDown(0) & (WPAD_BUTTON_B | WPAD_CLASSIC_BUTTON_B))
|
|
#endif
|
|
)
|
|
{
|
|
ret = -1;
|
|
VIDEO_WaitVSync();
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* ROM Information Screen
|
|
****************************************************************************/
|
|
|
|
void RomInfo()
|
|
{
|
|
clearscreen ();
|
|
|
|
int ypos = 65;
|
|
|
|
if (screenheight == 480)
|
|
ypos += 52;
|
|
else
|
|
ypos += 32;
|
|
|
|
setfontsize (28);
|
|
DrawText (-1, 60, (char*)"Rom Information");
|
|
|
|
setfontsize (16);
|
|
setfontcolour (0x00, 0x00, 0x00);
|
|
|
|
#define MENU_INFO_ROM "ROM"
|
|
#define MENU_INFO_ROMID "ROMID"
|
|
#define MENU_INFO_COMPANY "Company"
|
|
#define MENU_INFO_SIZE "Size"
|
|
#define MENU_INFO_SRAM "SRAM"
|
|
#define MENU_INFO_TYPE "Type"
|
|
#define MENU_INFO_CHECKSUM "Checksum"
|
|
#define MENU_INFO_TVTYPE "TV Type"
|
|
#define MENU_INFO_FRAMES "Frames"
|
|
#define MENU_INFO_CRC32 "CRC32"
|
|
|
|
char fmtString[1024];
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_ROM);
|
|
DrawText (300, ypos, Memory.ROMName);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_ROMID);
|
|
DrawText (300, ypos, Memory.ROMId);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_COMPANY);
|
|
DrawText (300, ypos, Memory.CompanyId);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_SIZE);
|
|
sprintf(fmtString, "%d", Memory.ROMSize);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_SRAM);
|
|
sprintf(fmtString, "%d", Memory.SRAMSize);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_TYPE);
|
|
sprintf(fmtString, "%d", Memory.ROMType);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_CHECKSUM);
|
|
sprintf(fmtString, "%04x / %04x", Memory.ROMChecksum, Memory.ROMComplementChecksum);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_TVTYPE);
|
|
sprintf(fmtString, "%s", Settings.PAL ? "PAL" : "NTSC");
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_FRAMES);
|
|
sprintf(fmtString, "%d", Memory.ROMFramesPerSecond);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
ypos += 20;
|
|
DrawText (150, ypos, (char *)MENU_INFO_CRC32);
|
|
sprintf(fmtString, "%08X", Memory.ROMCRC32);
|
|
DrawText (300, ypos, fmtString);
|
|
|
|
showscreen ();
|
|
}
|
|
|
|
|
|
/****************************************************************************
|
|
* DrawLine
|
|
*
|
|
* Quick'n'Dirty Bresenham line drawing routine.
|
|
****************************************************************************/
|
|
#define SIGN(x) ((x<0)?-1:((x>0)?1:0))
|
|
|
|
void
|
|
DrawLine (int x1, int y1, int x2, int y2, u8 r, u8 g, u8 b)
|
|
{
|
|
u32 colour, pixel;
|
|
u32 colourhi, colourlo;
|
|
int i, dx, dy, sdx, sdy, dxabs, dyabs, x, y, px, py;
|
|
int sp;
|
|
|
|
colour = getcolour (r, g, b);
|
|
colourhi = colour & 0xffff0000;
|
|
colourlo = colour & 0xffff;
|
|
|
|
dx = x2 - x1; /*** Horizontal distance ***/
|
|
dy = y2 - y1; /*** Vertical distance ***/
|
|
|
|
dxabs = abs (dx);
|
|
dyabs = abs (dy);
|
|
sdx = SIGN (dx);
|
|
sdy = SIGN (dy);
|
|
x = dyabs >> 1;
|
|
y = dxabs >> 1;
|
|
px = x1;
|
|
py = y1;
|
|
|
|
sp = (py * 320) + (px >> 1);
|
|
pixel = xfb[whichfb][sp];
|
|
/*** Plot this pixel ***/
|
|
if (px & 1)
|
|
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
|
|
else
|
|
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
|
|
|
|
if (dxabs >= dyabs) /*** Mostly horizontal ***/
|
|
{
|
|
for (i = 0; i < dxabs; i++)
|
|
{
|
|
y += dyabs;
|
|
if (y >= dxabs)
|
|
{
|
|
y -= dxabs;
|
|
py += sdy;
|
|
}
|
|
|
|
px += sdx;
|
|
|
|
sp = (py * 320) + (px >> 1);
|
|
pixel = xfb[whichfb][sp];
|
|
|
|
if (px & 1)
|
|
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
|
|
else
|
|
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < dyabs; i++)
|
|
{
|
|
x += dxabs;
|
|
if (x >= dyabs)
|
|
{
|
|
x -= dyabs;
|
|
px += sdx;
|
|
}
|
|
|
|
py += sdy;
|
|
|
|
sp = (py * 320) + (px >> 1);
|
|
pixel = xfb[whichfb][sp];
|
|
|
|
if (px & 1)
|
|
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
|
|
else
|
|
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
|
|
}
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Progress Bar
|
|
*
|
|
* Show the user what's happening
|
|
****************************************************************************/
|
|
void
|
|
ShowProgress (char *msg, int done, int total)
|
|
{
|
|
int ypos = (screenheight - 30) >> 1;
|
|
|
|
if (screenheight == 480)
|
|
ypos += 52;
|
|
else
|
|
ypos += 32;
|
|
|
|
int xpos;
|
|
int i;
|
|
|
|
clearscreen ();
|
|
DrawText (-1, ypos, msg);
|
|
|
|
/*** Draw a white outline box ***/
|
|
for (i = 380; i < 401; i++)
|
|
DrawLine (100, i, 540, i, 0xff, 0xff, 0xff);
|
|
|
|
/*** Show progess ***/
|
|
xpos = (int) (((float) done / (float) total) * 438);
|
|
|
|
for (i = 381; i < 400; i++)
|
|
DrawLine (101, i, 101 + xpos, i, 0x00, 0x00, 0x80);
|
|
|
|
showscreen ();
|
|
}
|
|
|
|
/****************************************************************************
|
|
* DrawPolygon
|
|
****************************************************************************/
|
|
void
|
|
DrawPolygon (int vertices, int varray[], u8 r, u8 g, u8 b)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < vertices - 1; i++)
|
|
{
|
|
DrawLine (varray[(i << 1)], varray[(i << 1) + 1], varray[(i << 1) + 2],
|
|
varray[(i << 1) + 3], r, g, b);
|
|
}
|
|
|
|
DrawLine (varray[0], varray[1], varray[(vertices << 1) - 2],
|
|
varray[(vertices << 1) - 1], r, g, b);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Draw Line Fast
|
|
*
|
|
* This routine requires that start and endx are 32bit aligned.
|
|
* It tries to perform a semi-transparency over the existing image.
|
|
*****************************************************************************/
|
|
|
|
#define SRCWEIGHT 0.7f
|
|
#define DSTWEIGHT (1.0f - SRCWEIGHT)
|
|
|
|
static inline u8 c_adjust( u8 c , float weight )
|
|
{
|
|
return (u8)((float)c * weight);
|
|
}
|
|
|
|
void DrawLineFast( int startx, int endx, int y, u8 r, u8 g, u8 b )
|
|
{
|
|
int width;
|
|
u32 offset;
|
|
int i;
|
|
u32 colour, clo, chi;
|
|
u32 lo,hi;
|
|
u8 *s, *d;
|
|
|
|
//colour = getcolour(r, g, b);
|
|
colour = ( r << 16 | g << 8 | b );
|
|
d = (u8 *)&colour;
|
|
d[1] = c_adjust(d[1], DSTWEIGHT);
|
|
d[2] = c_adjust(d[2], DSTWEIGHT);
|
|
d[3] = c_adjust(d[3], DSTWEIGHT);
|
|
|
|
width = ( endx - startx ) >> 1;
|
|
offset = ( y << 8 ) + ( y << 6 ) + ( startx >> 1 );
|
|
|
|
for ( i = 0; i < width; i++ )
|
|
{
|
|
lo = getrgb(xfb[whichfb][offset], 0);
|
|
hi = getrgb(xfb[whichfb][offset], 1);
|
|
|
|
s = (u8 *)&hi;
|
|
s[1] = ( ( c_adjust(s[1],SRCWEIGHT) ) + d[1] );
|
|
s[2] = ( ( c_adjust(s[2],SRCWEIGHT) ) + d[2] );
|
|
s[3] = ( ( c_adjust(s[3],SRCWEIGHT) ) + d[3] );
|
|
|
|
s = (u8 *)&lo;
|
|
s[1] = ( ( c_adjust(s[1],SRCWEIGHT) ) + d[1] );
|
|
s[2] = ( ( c_adjust(s[2],SRCWEIGHT) ) + d[2] );
|
|
s[3] = ( ( c_adjust(s[3],SRCWEIGHT) ) + d[3] );
|
|
|
|
clo = getcolour( s[1], s[2], s[3] );
|
|
s = (u8 *)&hi;
|
|
chi = getcolour( s[1], s[2], s[3] );
|
|
|
|
xfb[whichfb][offset++] = (chi & 0xffff0000 ) | ( clo & 0xffff) ;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* Ok, I'm useless with Y1CBY2CR colour.
|
|
* So convert back to RGB so I can work with it -;)
|
|
****************************************************************************/
|
|
u32 getrgb( u32 ycbr, u32 low )
|
|
{
|
|
u8 r,g,b;
|
|
u32 y;
|
|
s8 cb,cr;
|
|
|
|
if ( low )
|
|
y = ( ycbr & 0xff00 ) >> 8;
|
|
else
|
|
y = ( ycbr & 0xff000000 ) >> 24;
|
|
|
|
cr = ycbr & 0xff;
|
|
cb = ( ycbr & 0xff0000 ) >> 16;
|
|
|
|
cr -= 128;
|
|
cb -= 128;
|
|
|
|
r = (u8)((float)y + 1.371 * (float)cr);
|
|
g = (u8)((float)y - 0.698 * (float)cr - 0.336 * (float)cb);
|
|
b = (u8)((float)y + 1.732 * (float)cb);
|
|
|
|
return (u32)( r << 16 | g << 8 | b );
|
|
|
|
}
|