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implement C64 HiRes constraints.

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As they are almost the same as ZX Spectrum, that was easy.
This commit is contained in:
Thomas Bernard 2018-11-20 12:20:23 +01:00
parent 06f7b95b0f
commit ebb5a6e430
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GPG Key ID: 0FF11B67A5C0863C
1 changed files with 9 additions and 12 deletions
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21
src/graph.c
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@ -3321,7 +3321,8 @@ static void Pixel_in_screen_thomson_with_opt_preview(word x,word y,byte color,in
/// Paint a pixel with 8x8 block constraints
///
/// only 2 colors in a 8x8 block, and for the ZX Spectrum both must be either bight or not.
/// Used for ZX Spectrum and C64 HiRes modes.
/// Only 2 colors in a 8x8 block, and for the ZX Spectrum both must be either bight or not.
static void Pixel_in_screen_zx_with_opt_preview(word x,word y,byte color,int preview)
{
word start = x & 0xFFF8;
@ -3330,8 +3331,7 @@ static void Pixel_in_screen_zx_with_opt_preview(word x,word y,byte color,int pre
uint8_t c1, c2;
// The color we are going to replace
c1 = *(Main.backups->Pages->Image[Main.current_layer].Pixels
+ x + y * Main.image_width);
c1 = Read_pixel_from_current_layer(x, y);
// Pixel is already of the wanted color: nothing to do
if (c1 == color)
@ -3341,8 +3341,7 @@ static void Pixel_in_screen_zx_with_opt_preview(word x,word y,byte color,int pre
for (x2 = 0; x2 < 8; x2++)
for (y2 = 0; y2 < 8; y2++)
{
c2 = *(Main.backups->Pages->Image[Main.current_layer].Pixels
+ (x2 + start) + (y2 + starty) * Main.image_width);
c2 = Read_pixel_from_current_layer(x2 + start, y2 + starty);
// Pixel is already of the color we are going to add, it is no problem
if (c2 == color)
continue;
@ -3357,7 +3356,8 @@ done:
// There was only one color, so we can add a second one
// First make sure we have a single brightness
if ((c2 & 8) != (color & 8))
if (Main.backups->Pages->Image_mode == IMAGE_MODE_ZX
&& (c2 & 8) != (color & 8))
{
for (x2 = 0; x2 < 8; x2++)
for (y2 = 0; y2 < 8; y2++)
@ -3374,14 +3374,11 @@ done:
for (x2 = 0; x2 < 8; x2++)
for (y2 = 0; y2 < 8; y2++)
{
c2 = *(Main.backups->Pages->Image[Main.current_layer].Pixels
+ (x2 + start) + (y2 + starty) * Main.image_width);
if (c2 == c1) {
c2 = Read_pixel_from_current_layer(x2 + start, y2 + starty);
if (c2 == c1)
Pixel_in_screen_layered_with_opt_preview(x2+start,y2+starty,color,preview);
} else {
// Force the brightness bit
else if (Main.backups->Pages->Image_mode == IMAGE_MODE_ZX) // Force the brightness bit
Pixel_in_screen_layered_with_opt_preview(x2+start,y2+starty,(c2 & ~8) | (color & 8),preview);
}
}
}