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Make sure that drawing related variables only get changed when an actual screen update can take place

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1883
This commit is contained in:
Sjoerd van der Berg 2004-07-08 20:50:10 +00:00
parent a5f73e86a5
commit ad67e9420c
1 changed files with 9 additions and 12 deletions
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21
src/hardware/vga_draw.cpp
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@ -188,7 +188,6 @@ static void VGA_DrawPart(Bitu lines) {
PIC_AddEvent(VGA_DrawPart,vga.draw.micro.parts,
(vga.draw.parts_left!=1) ? vga.draw.parts_lines : (vga.draw.lines_total - vga.draw.lines_done));
} else {
vga.draw.drawing=false;
RENDER_EndUpdate();
}
}
@ -212,12 +211,15 @@ static void VGA_VerticalTimer(Bitu val) {
vga.config.retrace=false;
PIC_AddEvent(VGA_VerticalTimer,vga.draw.micro.vtotal);
PIC_AddEvent(VGA_VerticalDisplayEnd,vga.draw.micro.vend);
vga.draw.parts_left=vga.draw.parts_total;
vga.draw.lines_done=0;
vga.draw.address=vga.config.real_start;
vga.draw.address_line=vga.config.hlines_skip;
vga.draw.split_line=(vga.config.line_compare/vga.draw.lines_scaled);
vga.draw.panning=vga.config.pel_panning;
if (RENDER_StartUpdate()) {
vga.draw.parts_left=vga.draw.parts_total;
vga.draw.lines_done=0;
vga.draw.address=vga.config.real_start;
vga.draw.address_line=vga.config.hlines_skip;
vga.draw.split_line=(vga.config.line_compare/vga.draw.lines_scaled);
vga.draw.panning=vga.config.pel_panning;
PIC_AddEvent(VGA_DrawPart,vga.draw.micro.parts,vga.draw.parts_lines);
}
switch (vga.mode) {
case M_TEXT:
vga.draw.address=(vga.draw.address*2);
@ -233,10 +235,6 @@ static void VGA_VerticalTimer(Bitu val) {
break;
}
if (machine==MCH_TANDY) vga.draw.address+=vga.tandy.disp_bank << 14;
if (!vga.draw.drawing && RENDER_StartUpdate()) {
vga.draw.drawing=true;
PIC_AddEvent(VGA_DrawPart,vga.draw.micro.parts,vga.draw.parts_lines);
}
}
void VGA_CheckScanLength(void) {
@ -457,7 +455,6 @@ void VGA_SetupDrawing(Bitu val) {
PIC_RemoveEvents(VGA_VerticalTimer);
PIC_RemoveEvents(VGA_VerticalDisplayEnd);
PIC_RemoveEvents(VGA_DrawPart);
vga.draw.drawing=false;
vga.draw.width=width;
vga.draw.height=height;
vga.draw.doublewidth=doublewidth;