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Codechange: Extend DrawSpriteToRgbaBuffer to work with 8bpp blitters.

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This commit is contained in:
Michael Lutz
2021-12-31 01:22:45 +01:00
parent 69c8ed9965
commit 57b992717b
2 changed files with 20 additions and 2 deletions
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20
src/gfx.cpp
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@@ -1200,7 +1200,7 @@ std::unique_ptr<uint32[]> DrawSpriteToRgbaBuffer(SpriteID spriteId, ZoomLevel zo
if (zoom < _settings_client.gui.zoom_min || zoom > _settings_client.gui.zoom_max) return nullptr;
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
if (!blitter->Is32BppSupported()) return nullptr;
if (blitter->GetScreenDepth() != 8 && blitter->GetScreenDepth() != 32) return nullptr;
/* Gather information about the sprite to write, reserve memory */
const SpriteID real_sprite = GB(spriteId, 0, SPRITE_WIDTH);
@@ -1221,11 +1221,29 @@ std::unique_ptr<uint32[]> DrawSpriteToRgbaBuffer(SpriteID spriteId, ZoomLevel zo
dpi.height = dim.height;
dpi.zoom = zoom;
/* If the current blitter is a paletted blitter, we have to render to an extra buffer and resolve the palette later. */
std::unique_ptr<byte[]> pal_buffer{};
if (blitter->GetScreenDepth() == 8) {
pal_buffer.reset(new byte[dim.width * dim.height]);
MemSetT(pal_buffer.get(), 0, dim.width * dim.height);
dpi.dst_ptr = pal_buffer.get();
}
/* Temporarily disable screen animations while blitting - This prevents 40bpp_anim from writing to the animation buffer. */
Backup<bool> disable_anim(_screen_disable_anim, true, FILE_LINE);
GfxBlitter<1, true>(sprite, 0, 0, BM_NORMAL, nullptr, real_sprite, zoom, &dpi);
disable_anim.Restore();
if (blitter->GetScreenDepth() == 8) {
/* Resolve palette. */
uint32 *dst = result.get();
const byte *src = pal_buffer.get();
for (size_t i = 0; i < dim.height * dim.width; ++i) {
*dst++ = _cur_palette.palette[*src++].data;
}
}
return result;
}