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Only apply sprite_zoom_min setting when suitable zoom levels are available

Browse Source 
Only discard sprite zoom levels when a suitable higher zoom level is
defined in the same colour mode

See: https://github.com/OpenTTD/OpenTTD/issues/9804
pull/428/head
Jonathan G Rennison 2 years ago
parent 27316f70ec
commit 309f1b47d2
7 changed files with 49 additions and 36 deletions
Show Stats Download Patch File Download Diff File

13
src/settings.cpp
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@ -1787,19 +1787,6 @@ static bool LinkGraphDistributionSettingGUI(SettingOnGuiCtrlData &data)
}
}
static bool SpriteZoomMinSettingGUI(SettingOnGuiCtrlData &data)
{
switch (data.type) {
case SOGCT_DESCRIPTION_TEXT:
SetDParam(0, data.text);
data.text = STR_CONFIG_SETTING_SPRITE_ZOOM_MIN_HELPTEXT_EXTRA;
return true;
default:
return false;
}
}
static bool AllowRoadStopsUnderBridgesSettingGUI(SettingOnGuiCtrlData &data)
{
switch (data.type) {

34
src/spritecache.cpp
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@ -107,7 +107,6 @@ PACK_N(struct SpriteCache {
bool GetWarned() const { return HasBit(this->flags, SCCF_WARNED); }
void SetWarned(bool warned) { SB(this->flags, SCCF_WARNED, 1, warned ? 1 : 0); }
bool GetHasNonPalette() const { return HasBit(this->flags, SCCF_HAS_NON_PALETTE); }
void SetHasNonPalette(bool non_palette) { SB(this->flags, SCCF_HAS_NON_PALETTE, 1, non_palette ? 1 : 0); }
}, 4);
static std::vector<SpriteCache> _spritecache;
@ -523,10 +522,10 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
SpriteLoaderGrf sprite_loader(file.GetContainerVersion());
if (sprite_type != ST_MAPGEN && sc->GetHasNonPalette() && encoder->Is32BppSupported()) {
/* Try for 32bpp sprites first. */
sprite_avail = sprite_loader.LoadSprite(sprite, file, file_pos, sprite_type, true, sc->count);
sprite_avail = sprite_loader.LoadSprite(sprite, file, file_pos, sprite_type, true, sc->count, sc->flags);
}
if (sprite_avail == 0) {
sprite_avail = sprite_loader.LoadSprite(sprite, file, file_pos, sprite_type, false, sc->count);
sprite_avail = sprite_loader.LoadSprite(sprite, file, file_pos, sprite_type, false, sc->count, sc->flags);
}
if (sprite_avail == 0) {
@ -584,7 +583,7 @@ static void *ReadSprite(const SpriteCache *sc, SpriteID id, SpriteType sprite_ty
struct GrfSpriteOffset {
size_t file_pos;
uint count;
bool has_non_palette;
byte control_flags;
};
/** Map from sprite numbers to position in the GRF file. */
@ -625,14 +624,26 @@ void ReadGRFSpriteOffsets(SpriteFile &file)
_grf_sprite_offsets[prev_id] = offset;
offset.file_pos = file.GetPos() - 4;
offset.count = 0;
offset.has_non_palette = false;
offset.control_flags = 0;
}
offset.count++;
prev_id = id;
uint length = file.ReadDword();
if (length > 0) {
if ((file.ReadByte() & SCC_MASK) != SCC_PAL) offset.has_non_palette = true;
byte colour = file.ReadByte() & SCC_MASK;
if (colour != SCC_PAL) SetBit(offset.control_flags, SCCF_HAS_NON_PALETTE);
length--;
if (length > 0) {
byte zoom = file.ReadByte();
length--;
if (colour != 0 && zoom == 0) { // ZOOM_LVL_OUT_4X (normal zoom)
SetBit(offset.control_flags, (colour != SCC_PAL) ? SCCF_ALLOW_ZOOM_MIN_1X_32BPP : SCCF_ALLOW_ZOOM_MIN_1X_PAL);
SetBit(offset.control_flags, (colour != SCC_PAL) ? SCCF_ALLOW_ZOOM_MIN_2X_32BPP : SCCF_ALLOW_ZOOM_MIN_2X_PAL);
}
if (colour != 0 && zoom == 2) { // ZOOM_LVL_OUT_2X (2x zoomed in)
SetBit(offset.control_flags, (colour != SCC_PAL) ? SCCF_ALLOW_ZOOM_MIN_2X_32BPP : SCCF_ALLOW_ZOOM_MIN_2X_PAL);
}
}
}
file.SkipBytes(length);
}
@ -666,7 +677,7 @@ bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id)
SpriteType type;
void *data = nullptr;
uint count = 0;
bool has_non_palette = false;
byte control_flags = 0;
if (grf_type == 0xFF) {
/* Some NewGRF files have "empty" pseudo-sprites which are 1
* byte long. Catch these so the sprites won't be displayed. */
@ -687,7 +698,7 @@ bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id)
if (iter != _grf_sprite_offsets.end()) {
file_pos = iter->second.file_pos;
count = iter->second.count;
has_non_palette = iter->second.has_non_palette;
control_flags = iter->second.control_flags;
} else {
file_pos = SIZE_MAX;
}
@ -730,8 +741,7 @@ bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id)
sc->id = file_sprite_id;
sc->count = count;
sc->SetType(type);
sc->flags = 0;
if (has_non_palette) sc->SetHasNonPalette(true);
sc->flags = control_flags;
return true;
}
@ -978,7 +988,7 @@ uint32 GetSpriteMainColour(SpriteID sprite_id, PaletteID palette_id)
/* Try to read the 32bpp sprite first. */
if (screen_depth == 32 && sc->GetHasNonPalette()) {
sprite_avail = sprite_loader.LoadSprite(sprites, file, file_pos, ST_NORMAL, true, sc->count);
sprite_avail = sprite_loader.LoadSprite(sprites, file, file_pos, ST_NORMAL, true, sc->count, sc->flags);
if (sprite_avail != 0) {
SpriteLoader::Sprite *sprite = &sprites[FindFirstBit(sprite_avail)];
/* Return the average colour. */
@ -1008,7 +1018,7 @@ uint32 GetSpriteMainColour(SpriteID sprite_id, PaletteID palette_id)
}
/* No 32bpp, try 8bpp. */
sprite_avail = sprite_loader.LoadSprite(sprites, file, file_pos, ST_NORMAL, false, sc->count);
sprite_avail = sprite_loader.LoadSprite(sprites, file, file_pos, ST_NORMAL, false, sc->count, sc->flags);
if (sprite_avail != 0) {
SpriteLoader::Sprite *sprite = &sprites[FindFirstBit(sprite_avail)];
SpriteLoader::CommonPixel *pixel = sprite->data;

8
src/spritecache.h
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@ -23,8 +23,12 @@ struct Sprite {
};
enum SpriteCacheCtrlFlags {
SCCF_WARNED = 0, ///< True iff the user has been warned about incorrect use of this sprite.
SCCF_HAS_NON_PALETTE = 1, ///< True iff there is at least one non-paletter sprite present (such that 32bpp mode can be used).
SCCF_WARNED = 0, ///< True iff the user has been warned about incorrect use of this sprite.
SCCF_HAS_NON_PALETTE = 1, ///< True iff there is at least one non-paletter sprite present (such that 32bpp mode can be used).
SCCF_ALLOW_ZOOM_MIN_1X_PAL = 2, ///< Allow use of sprite min zoom setting at 1x in palette mode.
SCCF_ALLOW_ZOOM_MIN_1X_32BPP = 3, ///< Allow use of sprite min zoom setting at 1x in 32bpp mode.
SCCF_ALLOW_ZOOM_MIN_2X_PAL = 4, ///< Allow use of sprite min zoom setting at 2x in palette mode.
SCCF_ALLOW_ZOOM_MIN_2X_32BPP = 5, ///< Allow use of sprite min zoom setting at 2x in 32bpp mode.
};
extern uint _sprite_cache_size;

21
src/spriteloader/grf.cpp
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@ -17,6 +17,7 @@
#include "../core/math_func.hpp"
#include "../core/alloc_type.hpp"
#include "../core/bitmath_func.hpp"
#include "../spritecache.h"
#include "grf.hpp"
#include "../safeguards.h"
@ -245,7 +246,7 @@ uint8 LoadSpriteV1(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_p
return 0;
}
uint8 LoadSpriteV2(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count)
uint8 LoadSpriteV2(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count, byte control_flags)
{
static const ZoomLevel zoom_lvl_map[6] = {ZOOM_LVL_OUT_4X, ZOOM_LVL_NORMAL, ZOOM_LVL_OUT_2X, ZOOM_LVL_OUT_8X, ZOOM_LVL_OUT_16X, ZOOM_LVL_OUT_32X};
@ -273,7 +274,19 @@ uint8 LoadSpriteV2(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_p
bool is_wanted_zoom_lvl;
if (sprite_type != ST_MAPGEN) {
is_wanted_zoom_lvl = (zoom < lengthof(zoom_lvl_map) && zoom_lvl_map[zoom] >= _settings_client.gui.sprite_zoom_min);
if (zoom < lengthof(zoom_lvl_map)) {
is_wanted_zoom_lvl = true;
if (_settings_client.gui.sprite_zoom_min >= ZOOM_LVL_OUT_2X &&
HasBit(control_flags, load_32bpp ? SCCF_ALLOW_ZOOM_MIN_2X_32BPP : SCCF_ALLOW_ZOOM_MIN_2X_PAL) && zoom_lvl_map[zoom] < ZOOM_LVL_OUT_2X) {
is_wanted_zoom_lvl = false;
}
if (_settings_client.gui.sprite_zoom_min >= ZOOM_LVL_OUT_4X &&
HasBit(control_flags, load_32bpp ? SCCF_ALLOW_ZOOM_MIN_1X_32BPP : SCCF_ALLOW_ZOOM_MIN_1X_PAL) && zoom_lvl_map[zoom] < ZOOM_LVL_OUT_4X) {
is_wanted_zoom_lvl = false;
}
} else {
is_wanted_zoom_lvl = false;
}
} else {
is_wanted_zoom_lvl = (zoom == 0);
}
@ -332,10 +345,10 @@ uint8 LoadSpriteV2(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_p
return loaded_sprites;
}
uint8 SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count)
uint8 SpriteLoaderGrf::LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count, byte control_flags)
{
if (this->container_ver >= 2) {
return LoadSpriteV2(sprite, file, file_pos, sprite_type, load_32bpp, count);
return LoadSpriteV2(sprite, file, file_pos, sprite_type, load_32bpp, count, control_flags);
} else {
return LoadSpriteV1(sprite, file, file_pos, sprite_type, load_32bpp);
}

2
src/spriteloader/grf.hpp
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@ -17,7 +17,7 @@ class SpriteLoaderGrf : public SpriteLoader {
byte container_ver;
public:
SpriteLoaderGrf(byte container_ver) : container_ver(container_ver) {}
uint8 LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count);
uint8 LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count, byte control_flags);
};
#endif /* SPRITELOADER_GRF_HPP */

3
src/spriteloader/spriteloader.hpp
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@ -72,9 +72,10 @@ public:
* @param file_pos The position within the file the image begins.
* @param sprite_type The type of sprite we're trying to load.
* @param load_32bpp True if 32bpp sprites should be loaded, false for a 8bpp sprite.
* @param control_flags Control flags, see SpriteCacheCtrlFlags.
* @return Bit mask of the zoom levels successfully loaded or 0 if no sprite could be loaded.
*/
virtual uint8 LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count) = 0;
virtual uint8 LoadSprite(SpriteLoader::Sprite *sprite, SpriteFile &file, size_t file_pos, SpriteType sprite_type, bool load_32bpp, uint count, byte control_flags) = 0;
virtual ~SpriteLoader() { }
};

4
src/table/settings/settings.ini
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@ -82,7 +82,6 @@ static int64 LinkGraphDistModeXrefChillPP(int64 val);
static bool LinkGraphDistributionSettingGUI(SettingOnGuiCtrlData &data);
static bool OrderTownGrowthRate(SettingOnGuiCtrlData &data);
static bool SpriteZoomMinSettingGUI(SettingOnGuiCtrlData &data);
static bool AllowRoadStopsUnderBridgesSettingGUI(SettingOnGuiCtrlData &data);
/* End - GUI callbacks */
@ -4480,7 +4479,7 @@ startup = true
[SDTC_VAR]
var = gui.sprite_zoom_min
type = SLE_UINT8
flags = SF_NOT_IN_SAVE | SF_NO_NETWORK_SYNC | SF_GUI_DROPDOWN | SF_GUI_ADVISE_DEFAULT
flags = SF_NOT_IN_SAVE | SF_NO_NETWORK_SYNC | SF_GUI_DROPDOWN
def = ZOOM_LVL_MIN
min = ZOOM_LVL_MIN
max = ZOOM_LVL_OUT_4X
@ -4488,7 +4487,6 @@ str = STR_CONFIG_SETTING_SPRITE_ZOOM_MIN
strhelp = STR_CONFIG_SETTING_SPRITE_ZOOM_MIN_HELPTEXT
strval = STR_CONFIG_SETTING_SPRITE_ZOOM_LVL_MIN
post_cb = SpriteZoomMinChanged
guiproc = SpriteZoomMinSettingGUI
cat = SC_EXPERT
[SDTC_BOOL]

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