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Clear layers on reset, and update svga layers

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Renames/repurposes/extends the update_vga_panning function to also
update svga layers.
This commit is contained in:
Ernest Wong 2018-01-19 15:58:34 +13:00 committed by Fabian
parent 0726a99897
commit 9b9cb8e4cb
2 changed files with 28 additions and 20 deletions
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7
src/browser/screen.js
View file

@ -332,12 +332,7 @@ function ScreenAdapter(screen_container, bus)
graphical_mode_width = width;
graphical_mode_height = height;
layers =
[{
screen_x: 0, screen_y: 0,
buffer_x: 0, buffer_y: 0,
buffer_width: width, buffer_height: height
}];
layers = [];
this.bus.send("screen-tell-buffer", [graphic_buffer32], [graphic_buffer32.buffer]);
update_scale_graphic();

41
src/vga.js
View file

@ -536,6 +536,7 @@ VGAScreen.prototype.set_state = function(state)
{
this.set_size_graphical(this.svga_width, this.svga_height,
8, this.svga_width, this.svga_height);
this.update_layers();
}
else
{
@ -1195,7 +1196,7 @@ VGAScreen.prototype.update_vga_size = function()
this.virtual_width, this.virtual_height);
this.update_vertical_retrace();
this.update_vga_panning();
this.update_layers();
}
else
{
@ -1215,16 +1216,26 @@ VGAScreen.prototype.update_vga_size = function()
}
};
VGAScreen.prototype.update_vga_panning = function()
VGAScreen.prototype.update_layers = function()
{
if(!this.graphical_mode)
{
this.text_mode_redraw();
}
if(this.svga_enabled || !this.virtual_width || !this.svga_width)
if(this.svga_enabled && this.svga_width)
{
// Skip for svga mode and avoid division by zero
this.bus.send("screen-update-layers", [{
screen_x: 0, screen_y: 0,
buffer_x: 0, buffer_y: 0,
buffer_width: this.svga_width, buffer_height: this.svga_height
}]);
return;
}
if(!this.virtual_width || !this.svga_width)
{
// Avoid division by zero
return;
}
@ -1300,7 +1311,7 @@ VGAScreen.prototype.update_vertical_retrace = function()
if(this.start_address_latched !== this.start_address)
{
this.start_address_latched = this.start_address;
this.update_vga_panning();
this.update_layers();
}
};
@ -1328,7 +1339,7 @@ VGAScreen.prototype.port3C0_write = function(value)
// A method of blanking the screen.
// See http://www.phatcode.net/res/224/files/html/ch29/29-05.html#Heading6
this.palette_source = value & 0x20;
this.update_vga_panning();
this.update_layers();
}
}
else
@ -1387,7 +1398,7 @@ VGAScreen.prototype.port3C0_write = function(value)
if(this.horizontal_panning !== value)
{
this.horizontal_panning = value & 0xF;
this.update_vga_panning();
this.update_layers();
}
break;
case 0x14:
@ -1484,7 +1495,7 @@ VGAScreen.prototype.port3C5_write = function(value)
if((previous_clocking_mode ^ value) & 0x20)
{
// Screen disable bit modified
this.update_vga_panning();
this.update_layers();
}
break;
case 0x02:
@ -1745,12 +1756,12 @@ VGAScreen.prototype.port3D5_write = function(value)
{
this.update_vga_size();
}
this.update_vga_panning();
this.update_layers();
break;
case 0x8:
dbg_log("3D5 / preset row scan write: " + h(value), LOG_VGA);
this.preset_row_scan = value;
this.update_vga_panning();
this.update_layers();
break;
case 0x9:
dbg_log("3D5 / max scan line write: " + h(value), LOG_VGA);
@ -1764,7 +1775,7 @@ VGAScreen.prototype.port3D5_write = function(value)
this.update_vga_size();
}
this.update_vga_panning();
this.update_layers();
break;
case 0xA:
dbg_log("3D5 / cursor scanline start write: " + h(value), LOG_VGA);
@ -1780,7 +1791,7 @@ VGAScreen.prototype.port3D5_write = function(value)
if((this.start_address >> 8 & 0xFF) !== value)
{
this.start_address = this.start_address & 0xff | value << 8;
this.update_vga_panning();
this.update_layers();
if(~this.crtc_mode & 0x3)
{
// Address substitution implementation depends on the
@ -1794,7 +1805,7 @@ VGAScreen.prototype.port3D5_write = function(value)
if((this.start_address & 0xFF) !== value)
{
this.start_address = this.start_address & 0xff00 | value;
this.update_vga_panning();
this.update_layers();
if(~this.crtc_mode & 0x3)
{
// Address substitution implementation depends on the
@ -1881,7 +1892,7 @@ VGAScreen.prototype.port3D5_write = function(value)
case 0x18:
dbg_log("3D5 / line compare write: " + h(value), LOG_VGA);
this.line_compare = (this.line_compare & 0x300) | value;
this.update_vga_panning();
this.update_layers();
break;
default:
if(this.index_crtc < this.crtc.length)
@ -2056,6 +2067,8 @@ VGAScreen.prototype.port1CF_write = function(value)
{
this.svga_bank_offset = 0;
}
this.update_layers();
};
VGAScreen.prototype.port1CF_read = function()