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AGS: Make VRAM 8 bits per pixel

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Before this, the virtual VRAM was 32 bits per pixel, with each pixel
holding an 8-bit index color or 0x80RRGGBB. The latter was for Ayumi-
chan Monogatari Jisshaban, which has been unsupported since system3-sdl2
was forked from System3 for Win32.

This change removes the 0x80RRGGBB format and makes the virtual VRAM 8
bits per pixel.
This commit is contained in:
kichikuou
2025-01-17 10:58:46 +09:00
parent 7f0bae6f74
commit 33418f8cb5
12 changed files with 40 additions and 96 deletions
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src/sys/ags_text.cpp
+3 -3
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@@ -442,7 +442,7 @@ void AGS::draw_char(int dest, int dest_x, int dest_y, uint16 code, TTF_Font* fon
// パターン出力
for (int y = std::max(0, -dest_y); y < fs->h && dest_y + y < 480; y++) {
uint8 *pattern = (uint8*)surface_line(fs, y); // FIXME: do not assume 8bpp
uint8_t* pattern = (uint8_t*)fs->pixels + fs->pitch * y;
for(int x = 0; x < fs->w && dest_x + x < 640; x++) {
if(pattern[x] != 0) {
vram[dest][dest_y + y][dest_x + x] = color;
@@ -477,8 +477,8 @@ void AGS::draw_char_antialias(int dest, int dest_x, int dest_y, uint16 code, TTF
// パターン出力
for (int y = std::max(0, -dest_y); y < fs->h && dest_y + y < 480; y++) {
uint8 *pattern = (uint8*)surface_line(fs, y);
uint32 *dp = &vram[dest][dest_y + y][dest_x];
uint8_t* pattern = (uint8_t*)fs->pixels + fs->pitch * y;
uint8_t* dp = &vram[dest][dest_y + y][dest_x];
for(int x = 0; x < fs->w && dest_x + x < 640; x++, dp++) {
uint8 bg = *dp;
int alpha = pattern[x] >> 5;