From b3747759ce442f33a66fe1c86c2b8f7a892c3009 Mon Sep 17 00:00:00 2001 From: sparky4 Date: Mon, 27 Jun 2016 10:57:04 -0500 Subject: [PATCH] 0.c what? ww --- src/0.c | 61 ++++++++++++++++++++++++++------------------------------- 1 file changed, 28 insertions(+), 33 deletions(-) diff --git a/src/0.c b/src/0.c index 167c10d4..02b1b520 100755 --- a/src/0.c +++ b/src/0.c @@ -11,39 +11,6 @@ static unsigned char palette[768]; global_game_variables_t gvar; -void modexvrlwm1global_game_variables_t *gvar, int x, y, rx, ry, w, h, ) -{ - /* block copy pattern to where we will draw the sprite */ - vga_setup_wm1_block_copy(); - o2 = gvar->video.page[0].pagesize; - o = pattern_ofs + (ry * gvar->video.page[0].stridew) + (rx >> 2); // source offscreen - for (i=0;i < h;i++,o += gvar->video.page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2); - /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ - vga_restore_rm0wm0(); - - /* replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0) */ - vga_state.vga_draw_stride_limit = (gvar->video.page[0].width + 3/*round up*/ - x) >> 2; - vga_state.vga_draw_stride = w >> 2; - vga_state.vga_graphics_ram = omemptr + gvar->video.page[0].pagesize; - - /* then the sprite. note modding ram ptr means we just draw to (x&3,0) */ - draw_vrl1_vgax_modex(x-rx,y-ry,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header)); - - /* restore ptr */ - vga_state.vga_graphics_ram = omemptr; - - /* block copy to visible RAM from offscreen */ - vga_setup_wm1_block_copy(); - o = gvar->video.page[0].pagesize; // source offscreen - o2 = (ry * gvar->video.page[0].stridew) + (rx >> 2); // dest visible (original stride) - for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += gvar->video.page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2); - /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ - vga_restore_rm0wm0(); - - /* restore stride */ - vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar->video.page[0].stridew; -} - int main(int argc,char **argv) { struct vrl1_vgax_header *vrl_header; vrl1_vgax_offset_t *vrl_lineoffs; @@ -176,7 +143,35 @@ int main(int argc,char **argv) { if ((rx+w) > gvar.video.page[0].width) w = gvar.video.page[0].width-rx; if ((ry+h) > gvar.video.page[0].height) h = (gvar.video.page[0].height)-ry; + /* block copy pattern to where we will draw the sprite */ + vga_setup_wm1_block_copy(); + o2 = gvar.video.page[0].pagesize; + o = pattern_ofs + (ry * gvar.video.page[0].stridew) + (rx >> 2); // source offscreen + for (i=0;i < h;i++,o += gvar.video.page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2); + /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ + vga_restore_rm0wm0(); + + /* replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0) */ + vga_state.vga_draw_stride_limit = (gvar.video.page[0].width + 3/*round up*/ - x) >> 2; + vga_state.vga_draw_stride = w >> 2; + vga_state.vga_graphics_ram = omemptr + gvar.video.page[0].pagesize; + + /* then the sprite. note modding ram ptr means we just draw to (x&3,0) */ + draw_vrl1_vgax_modex(x-rx,y-ry,vrl_header,vrl_lineoffs,buffer+sizeof(*vrl_header),bufsz-sizeof(*vrl_header)); + + /* restore ptr */ + vga_state.vga_graphics_ram = omemptr; + + /* block copy to visible RAM from offscreen */ + vga_setup_wm1_block_copy(); + o = gvar.video.page[0].pagesize; // source offscreen + o2 = (ry * gvar.video.page[0].stridew) + (rx >> 2); // dest visible (original stride) + for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += gvar.video.page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2); + /* must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally */ + vga_restore_rm0wm0(); + /* restore stride */ + vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = gvar.video.page[0].stridew; /* step */ x += xdir; -- 2.39.2