diff options
Diffstat (limited to 'backends/dc/label.cpp')
| -rw-r--r-- | backends/dc/label.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/backends/dc/label.cpp b/backends/dc/label.cpp new file mode 100644 index 0000000000..8f263eec0a --- /dev/null +++ b/backends/dc/label.cpp @@ -0,0 +1,131 @@ +/* ScummVM - Scumm Interpreter + * Dreamcast port + * Copyright (C) 2002 Marcus Comstedt + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * $Header$ + * + */ + +#include <ronin/ronin.h> +#include <string.h> + +#include "label.h" + +static void *get_romfont_address() +{ + void *ret; + __asm__("jsr @%1; mov #0,r1; mov r0,%0" : + "=r" (ret) : "r" (*(void **)0x8c0000b4) : + "pr", "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7"); + return ret; +} + +static void draw_char(unsigned short *dst, int mod, int c, void *font_base) +{ + unsigned char *src; + int i, j; + if(c<=32 || c>255 || (c>=127 && c<160)) c=160; + if(c<128) c -= 32; else c -= 64; + src = c*36 + (unsigned char *)font_base; + for(i=0; i<12; i++) { + int n = (src[0]<<16)|(src[1]<<8)|src[2]; + for(j=0; j<12; j++, n<<=1) + if(n & (1<<23)) { + dst[j] = 0xffff; + dst[j+1] = 0xffff; + dst[j+2] = 0xa108; + dst[j+mod] = 0xa108; + dst[j+mod+1] = 0xa108; + } + dst += mod; + for(j=0; j<12; j++, n<<=1) + if(n & (1<<23)) { + dst[j] = 0xffff; + dst[j+1] = 0xffff; + dst[j+2] = 0xa108; + dst[j+mod] = 0xa108; + dst[j+mod+1] = 0xa108; + } + dst += mod; + src += 3; + } +} + +void Label::create_texture(const char *text) +{ + void *font = get_romfont_address(); + int l = strlen(text); + if(l>64) l=64; + int w = 14*l; + for(tex_u=TA_POLYMODE2_U_SIZE_8, u=8; u<w; u<<=1, tex_u += 1<<3); + int tsz = u*32; + unsigned short *tex = (unsigned short *)ta_txalloc(tsz*2); + for(int i=0; i<tsz; i++) + tex[i] = 0; + int p=l*14; + while(l>0) + draw_char(tex+(p-=14), u, text[--l], font); + texture = tex; +} + +void Label::draw(float x, float y, unsigned int argb, float scale) +{ + struct polygon_list mypoly; + struct packed_colour_vertex_list myvertex; + + mypoly.cmd = + TA_CMD_POLYGON|TA_CMD_POLYGON_TYPE_TRANSPARENT|TA_CMD_POLYGON_SUBLIST| + TA_CMD_POLYGON_STRIPLENGTH_2|TA_CMD_POLYGON_PACKED_COLOUR|TA_CMD_POLYGON_TEXTURED; + mypoly.mode1 = TA_POLYMODE1_Z_ALWAYS|TA_POLYMODE1_NO_Z_UPDATE; + mypoly.mode2 = + TA_POLYMODE2_BLEND_SRC_ALPHA|TA_POLYMODE2_BLEND_DST_INVALPHA| + TA_POLYMODE2_FOG_DISABLED|TA_POLYMODE2_ENABLE_ALPHA| + TA_POLYMODE2_TEXTURE_MODULATE_ALPHA|TA_POLYMODE2_V_SIZE_32|tex_u; + mypoly.texture = TA_TEXTUREMODE_ARGB1555|TA_TEXTUREMODE_NON_TWIDDLED| + TA_TEXTUREMODE_ADDRESS(texture); + + mypoly.red = mypoly.green = mypoly.blue = mypoly.alpha = 0; + + ta_commit_list(&mypoly); + + myvertex.cmd = TA_CMD_VERTEX; + myvertex.ocolour = 0; + myvertex.colour = argb; + myvertex.z = 0.5; + myvertex.u = 0.0; + myvertex.v = 0.0; + + myvertex.x = x; + myvertex.y = y; + ta_commit_list(&myvertex); + + myvertex.x = x+u*scale; + myvertex.u = 1.0; + ta_commit_list(&myvertex); + + myvertex.x = x; + myvertex.y = y+25.0*scale; + myvertex.u = 0.0; + myvertex.v = 25.0/32.0; + ta_commit_list(&myvertex); + + myvertex.x = x+u*scale; + myvertex.u = 1.0; + myvertex.cmd |= TA_CMD_VERTEX_EOS; + ta_commit_list(&myvertex); +} + |