m/grafX2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

implement Apple II HGR Drawing mode

Browse Source
This commit is contained in:
Thomas Bernard
2018-12-02 23:28:27 +01:00
committed by Adrien Destugues
parent 7b21ac8a90
commit 45bb0dd9f7
3 changed files with 60 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
src/graph.c
View File

@@ -3256,6 +3256,25 @@ static void Pixel_in_screen_layered_with_opt_preview(word x,word y,byte color, i
}
}
/// Paint in a specific layer and update optionnaly the screen
static void Pixel_in_layer_with_opt_preview(int layer, word x,word y,byte color, int preview)
{
byte depth = *(Main_visible_image_depth_buffer.Image+x+y*Main.image_width);
Pixel_in_layer(layer, x, y, color);
// if (depth > layer) => another layer hides this one
if (depth <= layer && ((1 << layer) & Main.layers_visible))
{
if (color == Main.backups->Pages->Transparent_color) // transparent color
// fetch pixel color from the topmost visible layer
color = Read_pixel_from_layer(depth, x, y);
Main_screen[x+y*Main.image_width]=color;
if (preview)
Pixel_preview(x,y,color);
}
}
/// @defgroup constraints Special constaints drawing modes
/// For 8bits machines modes (ZX Spectrum, C64, etc.)
@@ -3657,6 +3676,7 @@ void Update_pixel_renderer(void)
// direct
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_direct_with_opt_preview;
break;
case IMAGE_MODE_DHGR: // TODO
case IMAGE_MODE_LAYERED:
// layered
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_layered_with_opt_preview;
@@ -3688,5 +3708,13 @@ void Update_pixel_renderer(void)
else // layered (again, for layers > 4 in MODE5 and RASTER)
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_layered_with_opt_preview;
break;
case IMAGE_MODE_HGR:
if (Main.current_layer == 0) // monochrome layer
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_hgr_mono_with_opt_preview;
else if (Main.current_layer == 1) // color layer
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_hgr_color_with_opt_preview;
else
Pixel_in_current_screen_with_opt_preview = Pixel_in_screen_layered_with_opt_preview;
break;
}
}