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;
* this time, we render the distinctive pattern to another offscreen location and just copy.
* note this version is much faster too! */
{
- const unsigned int pattern_ofs = 0x10000UL - gvar.video.page[0].pagesize;//(gvar.video.page[0].stridew * gvar.video.page[0].height);
+ //const unsigned int pattern_ofs = 0x10000UL - gvar.video.page[0].pagesize;//(gvar.video.page[0].stridew * gvar.video.page[0].height);
unsigned int i,j,o,o2;
int x,y,rx,ry,w,h;
unsigned int overdraw = 1; // how many pixels to "overdraw" so that moving sprites with edge pixels don't leave streaks.
//4 this dose the sprite? wwww
/* fill pattern offset with a distinctive pattern */
for (i=0;i < gvar.video.page[0].width;i++) {
- o = (i >> 2) + pattern_ofs;
+ o = (i >> 2) + (0x10000UL - (uint16_t)gvar.video.page[1].data);
vga_write_sequencer(0x02/*map mask*/,1 << (i&3));
for (j=0;j < VMEMHEIGHT;j++,o += gvar.video.page[0].stridew)
vga_state.vga_graphics_ram[o] = (i^j)&15; // VRL samples put all colors in first 15!
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 = (0x10000UL - (uint16_t)gvar.video.page[1].data) + (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;
if (dh < 40) dh_step = 1;
}
}
-
+//uint16_t
+ printf("%u\n", (0x10000UL - (uint16_t)(gvar.video.page[1].data)));
VGAmodeX(0, 1, &gvar);
free(vrl_lineoffs);
buffer = NULL;
projects / 16.git / blobdiff