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https://github.com/ekeeke/Genesis-Plus-GX.git
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608 lines
16 KiB
C
608 lines
16 KiB
C
/*****************************************************************************
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* font.c
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*
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* IPL FONT Engine, based on Qoob MP3 Player Font
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*
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* code by Softdev (2006), Eke-Eke(2007-2008)
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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********************************************************************************/
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#include "shared.h"
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#include "font.h"
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#include "Overlay_bar.h"
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#include <png.h>
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/* Backdrop Frame Width (to avoid writing outside of the background frame) */
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u16 back_framewidth = 640;
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int font_size[256], fheight;
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#ifndef HW_RVL
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/* disable Qoob Modchip before IPL access (emukiddid) */
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static void ipl_set_config(unsigned char c)
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{
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volatile unsigned long* exi = (volatile unsigned long*)0xCC006800;
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unsigned long val,addr;
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addr=0xc0000000;
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val = c << 24;
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exi[0] = ((((exi[0]) & 0x405) | 256) | 48); //select IPL
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//write addr of IPL
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exi[0 * 5 + 4] = addr;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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//write the ipl we want to send
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exi[0 * 5 + 4] = val;
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exi[0 * 5 + 3] = ((4 - 1) << 4) | (1 << 2) | 1;
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while (exi[0 * 5 + 3] & 1);
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exi[0] &= 0x405; //deselect IPL
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}
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#endif
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static sys_fontheader *fontHeader;
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static u8 *texture;
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int FONT_Init(void)
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{
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#ifndef HW_RVL
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/* disable Qoob before accessing IPL */
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ipl_set_config(6);
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#endif
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/* initialize IPL font */
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fontHeader = memalign(32,sizeof(sys_fontheader));
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if (!fontHeader) return -1;
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SYS_InitFont(&fontHeader);
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/* character width table */
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int i,c;
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for (i=0; i<256; ++i)
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{
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if ((i < fontHeader->first_char) || (i > fontHeader->last_char)) c = fontHeader->inval_char;
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else c = i - fontHeader->first_char;
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font_size[i] = ((unsigned char*)fontHeader)[fontHeader->width_table + c];
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}
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/* default font height */
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fheight = fontHeader->cell_height;
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/* initialize texture data */
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texture = memalign(32, fontHeader->cell_width * fontHeader->cell_height / 2);
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if (!texture) return -1;
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return 0;
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}
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static void DrawChar(unsigned char c, int xpos, int ypos, int size, GXColor color)
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{
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s32 width;
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/* reintialize texture object */
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GXTexObj texobj;
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GX_InitTexObj(&texobj, texture, fontHeader->cell_width, fontHeader->cell_height, GX_TF_I4, GX_CLAMP, GX_CLAMP, GX_FALSE);
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GX_LoadTexObj(&texobj, GX_TEXMAP0);
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/* reinitialize font texture data */
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memset(texture,0,fontHeader->cell_width * fontHeader->cell_height / 2);
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SYS_GetFontTexel(c,texture,0,fontHeader->cell_width/2,&width);
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DCFlushRange(texture, fontHeader->cell_width * fontHeader->cell_height / 2);
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GX_InvalidateTexAll();
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/* adjust texture width */
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width = (fontHeader->cell_width * size) / fontHeader->cell_height;
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/* GX rendering */
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GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
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GX_Position2s16(xpos, ypos - size);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(0.0, 0.0);
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GX_Position2s16(xpos + width, ypos - size);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(1.0, 0.0);
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GX_Position2s16(xpos + width, ypos);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(1.0, 1.0);
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GX_Position2s16(xpos, ypos);
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GX_Color4u8(color.r, color.g, color.b, 0xff);
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GX_TexCoord2f32(0.0, 1.0);
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GX_End ();
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GX_DrawDone();
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}
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void write_font(int x, int y, char *string)
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{
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int ox = x;
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while (*string && (x < (ox + back_framewidth)))
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{
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DrawChar(*string, x -(vmode->fbWidth/2), y-(vmode->efbHeight/2),fontHeader->cell_height,(GXColor)WHITE);
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x += font_size[(u8)*string];
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string++;
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}
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}
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void WriteCentre( int y, char *string)
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{
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int x, t;
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for (x=t=0; t<strlen(string); t++) x += font_size[(u8)string[t]];
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if (x>back_framewidth) x=back_framewidth;
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x = (640 - x) >> 1;
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write_font(x, y, string);
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}
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void WriteCentre_HL( int y, char *string)
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{
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png_texture *texture = OpenTexturePNG(Overlay_bar);
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if (texture)
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{
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DrawTexture(texture, 0, y-fheight, 640, fheight);
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if (texture->data) free(texture->data);
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free(texture);
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}
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WriteCentre(y, string);
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}
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void FONT_alignLeft(char *string, int size, int x, int y, GXColor color)
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{
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x -= (vmode->fbWidth / 2);
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y -= (vmode->efbHeight / 2);
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while (*string)
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{
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DrawChar(*string, x, y, size,color);
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x += (font_size[(u8)*string++] * size) / fheight;
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}
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}
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void FONT_alignRight(char *string, int size, int x, int y, GXColor color)
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{
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int i;
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u16 width = 0;
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for (i=0; i<strlen(string); i++)
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width += (font_size[(u8)string[i]] * size) / fheight;
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x -= (vmode->fbWidth / 2) + width;
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y -= (vmode->efbHeight / 2);
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while (*string)
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{
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DrawChar(*string, x, y, size,color);
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x += (font_size[(u8)*string++] * size) / fheight;
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}
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}
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void FONT_writeCenter(char *string, int size, int x1, int x2, int y, GXColor color)
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{
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int i;
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u16 width = 0;
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for (i=0; i<strlen(string); i++)
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width += (font_size[(u8)string[i]] * size) / fheight;
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x1 += (x2 - x1 - width - vmode->fbWidth) / 2;
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y -= (vmode->efbHeight / 2);
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while (*string)
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{
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DrawChar(*string, x1, y, size,color);
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x1 += (font_size[(u8)*string++] * size) / fheight;
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}
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}
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/****************************************************************************
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* Draw functions (FrameBuffer)
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*
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****************************************************************************/
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void fntDrawHLine (int x1, int x2, int y, int color)
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{
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int i;
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y = 320 * y;
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x1 >>= 1;
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x2 >>= 1;
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for (i = x1; i <= x2; i++) xfb[whichfb][y + i] = color;
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}
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void fntDrawVLine (int x, int y1, int y2, int color)
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{
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int i;
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x >>= 1;
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for (i = y1; i <= y2; i++) xfb[whichfb][x + (640 * i) / 2] = color;
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}
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void fntDrawBox (int x1, int y1, int x2, int y2, int color)
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{
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fntDrawHLine (x1, x2, y1, color);
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fntDrawHLine (x1, x2, y2, color);
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fntDrawVLine (x1, y1, y2, color);
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fntDrawVLine (x2, y1, y2, color);
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}
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void fntDrawBoxFilled (int x1, int y1, int x2, int y2, int color)
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{
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int h;
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for (h = y1; h <= y2; h++) fntDrawHLine (x1, x2, h, color);
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}
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/****************************************************************************
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* Draw functions (GX)
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*
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****************************************************************************/
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typedef struct
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{
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u8 *buffer;
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u32 offset;
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} png_file;
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/* libpng read callback function */
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static void png_read_from_mem (png_structp png_ptr, png_bytep data, png_size_t length)
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{
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png_file *file = (png_file *)png_get_io_ptr (png_ptr);
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/* copy data from image buffer */
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memcpy (data, file->buffer + file->offset, length);
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/* advance in the file */
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file->offset += length;
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}
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void CloseTexturePNG(png_texture **p_texture)
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{
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png_texture *texture = *p_texture;
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if (texture)
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{
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if (texture->data) free(texture->data);
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free(texture);
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*p_texture = NULL;
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}
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}
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/* convert a png file into RGBA8 texture */
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png_texture *OpenTexturePNG(const u8 *buffer)
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{
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int i;
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png_file file;
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/* init PNG file structure */
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file.buffer = (u8 *) buffer;
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file.offset = 0;
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/* check for valid magic number */
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/*if (!png_check_sig (file.buffer, 8)) return;*/
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/* create a png read struct */
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png_structp png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png_ptr) return NULL;
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/* create a png info struct */
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png_infop info_ptr = png_create_info_struct (png_ptr);
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if (!info_ptr)
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{
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png_destroy_read_struct (&png_ptr, NULL, NULL);
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return NULL;
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}
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/* set callback for the read function */
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png_set_read_fn (png_ptr, (png_voidp *)(&file), png_read_from_mem);
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/* read png info */
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png_read_info (png_ptr, info_ptr);
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/* retrieve image information */
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u32 width = png_get_image_width(png_ptr, info_ptr);
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u32 height = png_get_image_height(png_ptr, info_ptr);
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#if 0
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/* ensure PNG images are in the supported format */
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u32 bit_depth = png_get_bit_depth(png_ptr, info_ptr);
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u32 color_type = png_get_color_type(png_ptr, info_ptr);
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/* support for RGBA8 textures ONLY !*/
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if ((color_type != PNG_COLOR_TYPE_RGB_ALPHA) || (bit_depth != 8))
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{
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png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
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return;
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}
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/* 4x4 tiles are required */
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if ((width%4) || (height%4))
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{
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png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
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return;
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}
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#endif
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/* allocate memory to store raw image data */
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u32 stride = width << 2;
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u8 *img_data = memalign (32, stride * height);
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if (!img_data)
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{
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png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
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return NULL;
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}
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/* allocate row pointer data */
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png_bytep *row_pointers = (png_bytep *)memalign (32, sizeof (png_bytep) * height);
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if (!row_pointers)
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{
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free (img_data);
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png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
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return NULL;
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}
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/* store raw image data */
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for (i = 0; i < height; i++)
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{
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row_pointers[i] = img_data + (i * stride);
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}
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/* decode image */
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png_read_image (png_ptr, row_pointers);
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/* finish decompression and release memory */
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png_read_end (png_ptr, NULL);
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png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
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free(row_pointers);
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/* initialize texture */
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png_texture *texture = (png_texture *)memalign(32, sizeof(png_texture));
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if (!texture)
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{
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free (img_data);
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return NULL;
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}
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/* initialize texture data */
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texture->data = memalign(32, stride * height);
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if (!texture->data)
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{
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free (img_data);
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free(texture);
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return NULL;
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}
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memset(texture->data, 0, stride * height);
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texture->width = width;
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texture->height = height;
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texture->format = GX_TF_RGBA8;
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/* encode to GX_TF_RGBA8 format (4x4 pixels paired titles) */
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u16 *dst_ar = (u16 *)(texture->data);
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u16 *dst_gb = (u16 *)(texture->data + 32);
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u32 *src1 = (u32 *)(img_data);
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u32 *src2 = (u32 *)(img_data + stride);
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u32 *src3 = (u32 *)(img_data + 2*stride);
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u32 *src4 = (u32 *)(img_data + 3*stride);
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u32 pixel,h,w;
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for (h=0; h<height; h+=4)
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{
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for (w=0; w<width; w+=4)
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{
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/* line N (4 pixels) */
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for (i=0; i<4; i++)
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{
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pixel = *src1++;
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*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
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*dst_gb++= (pixel >> 8) & 0xffff;
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}
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/* line N + 1 (4 pixels) */
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for (i=0; i<4; i++)
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{
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pixel = *src2++;
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*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
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*dst_gb++= (pixel >> 8) & 0xffff;
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}
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/* line N + 2 (4 pixels) */
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for (i=0; i<4; i++)
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{
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pixel = *src3++;
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*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
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*dst_gb++= (pixel >> 8) & 0xffff;
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}
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/* line N + 3 (4 pixels) */
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for (i=0; i<4; i++)
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{
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pixel = *src4++;
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*dst_ar++= ((pixel << 8) & 0xff00) | ((pixel >> 24) & 0x00ff);
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*dst_gb++= (pixel >> 8) & 0xffff;
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}
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/* next paired tiles */
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dst_ar += 16;
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dst_gb += 16;
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}
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/* next 4 lines */
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src1 = src4;
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src2 = src1 + width;
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src3 = src2 + width;
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src4 = src3 + width;
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}
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/* release memory */
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free(img_data);
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/* flush texture data from cache */
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DCFlushRange(texture->data, height * stride);
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return texture;
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}
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void DrawTexture(png_texture *texture, int x, int y, int w, int h)
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{
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if (texture->data)
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{
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/* load texture object */
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GXTexObj texObj;
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GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
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GX_InitTexObjLOD(&texObj,GX_LINEAR,GX_LIN_MIP_LIN,0.0,10.0,0.0,GX_FALSE,GX_TRUE,GX_ANISO_4); /* does this really change anything ? */
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GX_LoadTexObj(&texObj, GX_TEXMAP0);
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GX_InvalidateTexAll();
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/* adjust coordinate system */
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x -= (vmode->fbWidth/2);
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y -= (vmode->efbHeight/2);
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/* Draw textured quad */
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GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
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GX_Position2s16(x,y+h);
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GX_Color4u8(0xff,0xff,0xff,0xff);
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GX_TexCoord2f32(0.0, 1.0);
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GX_Position2s16(x+w,y+h);
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GX_Color4u8(0xff,0xff,0xff,0xff);
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GX_TexCoord2f32(1.0, 1.0);
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GX_Position2s16(x+w,y);
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GX_Color4u8(0xff,0xff,0xff,0xff);
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GX_TexCoord2f32(1.0, 0.0);
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GX_Position2s16(x,y);
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GX_Color4u8(0xff,0xff,0xff,0xff);
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GX_TexCoord2f32(0.0, 0.0);
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GX_End ();
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GX_DrawDone();
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}
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}
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void DrawTextureAlpha(png_texture *texture, int x, int y, int w, int h, u8 alpha)
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{
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if (texture->data)
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{
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/* load texture object */
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GXTexObj texObj;
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GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
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GX_InitTexObjLOD(&texObj,GX_LINEAR,GX_LIN_MIP_LIN,0.0,10.0,0.0,GX_FALSE,GX_TRUE,GX_ANISO_4); /* does this really change anything ? */
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GX_LoadTexObj(&texObj, GX_TEXMAP0);
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GX_InvalidateTexAll();
|
|
|
|
/* vertex coordinate */
|
|
x -= (vmode->fbWidth/2);
|
|
y -= (vmode->efbHeight/2);
|
|
|
|
/* draw textured quad */
|
|
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
|
|
GX_Position2s16(x,y+h);
|
|
GX_Color4u8(0xff,0xff,0xff,alpha);
|
|
GX_TexCoord2f32(0.0, 1.0);
|
|
GX_Position2s16(x+w,y+h);
|
|
GX_Color4u8(0xff,0xff,0xff,alpha);
|
|
GX_TexCoord2f32(1.0, 1.0);
|
|
GX_Position2s16(x+w,y);
|
|
GX_Color4u8(0xff,0xff,0xff,alpha);
|
|
GX_TexCoord2f32(1.0, 0.0);
|
|
GX_Position2s16(x,y);
|
|
GX_Color4u8(0xff,0xff,0xff,alpha);
|
|
GX_TexCoord2f32(0.0, 0.0);
|
|
GX_End ();
|
|
GX_DrawDone();
|
|
}
|
|
}
|
|
|
|
void DrawTextureRepeat(png_texture *texture, int x, int y, int w, int h)
|
|
{
|
|
if (texture->data)
|
|
{
|
|
/* load texture object */
|
|
GXTexObj texObj;
|
|
GX_InitTexObj(&texObj, texture->data, texture->width, texture->height, GX_TF_RGBA8, GX_MIRROR, GX_MIRROR, GX_FALSE);
|
|
GX_LoadTexObj(&texObj, GX_TEXMAP0);
|
|
GX_InvalidateTexAll();
|
|
|
|
/* vertex coordinate */
|
|
x -= (vmode->fbWidth/2);
|
|
y -= (vmode->efbHeight/2);
|
|
|
|
/* texture coordinates */
|
|
f32 s = (f32)vmode->fbWidth / (f32)texture->width;
|
|
f32 t = (f32)vmode->efbHeight / (f32)texture->height;
|
|
|
|
/* draw textured quad */
|
|
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
|
|
GX_Position2s16(x,y+h);
|
|
GX_Color4u8(0xff,0xff,0xff,0xff);
|
|
GX_TexCoord2f32(0.0, t);
|
|
GX_Position2s16(x+w,y+h);
|
|
GX_Color4u8(0xff,0xff,0xff,0xff);
|
|
GX_TexCoord2f32(s, t);
|
|
GX_Position2s16(x+w,y);
|
|
GX_Color4u8(0xff,0xff,0xff,0xff);
|
|
GX_TexCoord2f32(s, 0.0);
|
|
GX_Position2s16(x,y);
|
|
GX_Color4u8(0xff,0xff,0xff,0xff);
|
|
GX_TexCoord2f32(0.0, 0.0);
|
|
GX_End ();
|
|
GX_DrawDone();
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Display functions
|
|
*
|
|
****************************************************************************/
|
|
u8 SILENT = 0;
|
|
|
|
GXColor BACKGROUND = {0xd4,0xd0,0xc8,0xff};
|
|
|
|
|
|
void SetScreen ()
|
|
{
|
|
GX_CopyDisp(xfb[whichfb], GX_FALSE);
|
|
GX_Flush();
|
|
VIDEO_SetNextFramebuffer (xfb[whichfb]);
|
|
VIDEO_Flush ();
|
|
VIDEO_WaitVSync ();
|
|
}
|
|
|
|
void ClearScreen (GXColor color)
|
|
{
|
|
whichfb ^= 1;
|
|
GX_SetCopyClear(color,0x00ffffff);
|
|
GX_CopyDisp(xfb[whichfb], GX_TRUE);
|
|
GX_Flush();
|
|
}
|
|
|
|
extern s16 ogc_input__getMenuButtons(u32 cnt);
|
|
|
|
void WaitButtonA ()
|
|
{
|
|
s16 p = ogc_input__getMenuButtons(0);
|
|
while (p & PAD_BUTTON_A) p = ogc_input__getMenuButtons(0);
|
|
while (!(p & PAD_BUTTON_A)) p = ogc_input__getMenuButtons(0);
|
|
}
|
|
|
|
void WaitPrompt (char *msg)
|
|
{
|
|
if (SILENT) return;
|
|
ClearScreen((GXColor)BLACK);
|
|
WriteCentre(254, msg);
|
|
WriteCentre(254 + fheight, "Press A to Continue");
|
|
SetScreen();
|
|
WaitButtonA ();
|
|
}
|
|
|
|
void ShowAction (char *msg)
|
|
{
|
|
if (SILENT) return;
|
|
|
|
ClearScreen((GXColor)BLACK);
|
|
WriteCentre(254, msg);
|
|
SetScreen();
|
|
}
|