mirror of
https://github.com/libretro/scummvm.git
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132 lines
3.5 KiB
C++
132 lines
3.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Dreamcast port
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* Copyright (C) 2002 Marcus Comstedt
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* 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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* $Header$
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*
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*/
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#include <ronin/ronin.h>
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#include <string.h>
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#include "label.h"
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static void *get_romfont_address()
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{
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void *ret;
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__asm__("jsr @%1; mov #0,r1; mov r0,%0" :
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"=r" (ret) : "r" (*(void **)0x8c0000b4) :
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"pr", "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7");
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return ret;
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}
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static void draw_char(unsigned short *dst, int mod, int c, void *font_base)
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{
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unsigned char *src;
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int i, j;
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if(c<=32 || c>255 || (c>=127 && c<160)) c=160;
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if(c<128) c -= 32; else c -= 64;
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src = c*36 + (unsigned char *)font_base;
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for(i=0; i<12; i++) {
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int n = (src[0]<<16)|(src[1]<<8)|src[2];
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for(j=0; j<12; j++, n<<=1)
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if(n & (1<<23)) {
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dst[j] = 0xffff;
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dst[j+1] = 0xffff;
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dst[j+2] = 0xa108;
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dst[j+mod] = 0xa108;
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dst[j+mod+1] = 0xa108;
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}
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dst += mod;
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for(j=0; j<12; j++, n<<=1)
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if(n & (1<<23)) {
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dst[j] = 0xffff;
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dst[j+1] = 0xffff;
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dst[j+2] = 0xa108;
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dst[j+mod] = 0xa108;
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dst[j+mod+1] = 0xa108;
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}
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dst += mod;
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src += 3;
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}
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}
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void Label::create_texture(const char *text)
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{
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void *font = get_romfont_address();
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int l = strlen(text);
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if(l>64) l=64;
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int w = 14*l;
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for(tex_u=TA_POLYMODE2_U_SIZE_8, u=8; u<w; u<<=1, tex_u += 1<<3);
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int tsz = u*32;
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unsigned short *tex = (unsigned short *)ta_txalloc(tsz*2);
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for(int i=0; i<tsz; i++)
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tex[i] = 0;
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int p=l*14;
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while(l>0)
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draw_char(tex+(p-=14), u, text[--l], font);
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texture = tex;
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}
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void Label::draw(float x, float y, unsigned int argb, float scale)
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{
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struct polygon_list mypoly;
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struct packed_colour_vertex_list myvertex;
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mypoly.cmd =
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TA_CMD_POLYGON|TA_CMD_POLYGON_TYPE_TRANSPARENT|TA_CMD_POLYGON_SUBLIST|
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TA_CMD_POLYGON_STRIPLENGTH_2|TA_CMD_POLYGON_PACKED_COLOUR|TA_CMD_POLYGON_TEXTURED;
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mypoly.mode1 = TA_POLYMODE1_Z_ALWAYS|TA_POLYMODE1_NO_Z_UPDATE;
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mypoly.mode2 =
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TA_POLYMODE2_BLEND_SRC_ALPHA|TA_POLYMODE2_BLEND_DST_INVALPHA|
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TA_POLYMODE2_FOG_DISABLED|TA_POLYMODE2_ENABLE_ALPHA|
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TA_POLYMODE2_TEXTURE_MODULATE_ALPHA|TA_POLYMODE2_V_SIZE_32|tex_u;
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mypoly.texture = TA_TEXTUREMODE_ARGB1555|TA_TEXTUREMODE_NON_TWIDDLED|
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TA_TEXTUREMODE_ADDRESS(texture);
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mypoly.red = mypoly.green = mypoly.blue = mypoly.alpha = 0;
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ta_commit_list(&mypoly);
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myvertex.cmd = TA_CMD_VERTEX;
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myvertex.ocolour = 0;
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myvertex.colour = argb;
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myvertex.z = 0.5;
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myvertex.u = 0.0;
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myvertex.v = 0.0;
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myvertex.x = x;
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myvertex.y = y;
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ta_commit_list(&myvertex);
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myvertex.x = x+u*scale;
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myvertex.u = 1.0;
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ta_commit_list(&myvertex);
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myvertex.x = x;
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myvertex.y = y+25.0*scale;
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myvertex.u = 0.0;
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myvertex.v = 25.0/32.0;
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ta_commit_list(&myvertex);
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myvertex.x = x+u*scale;
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myvertex.u = 1.0;
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myvertex.cmd |= TA_CMD_VERTEX_EOS;
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ta_commit_list(&myvertex);
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}
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