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feat: Add layer visibility controls and BG2 layer type selection in DungeonCanvasViewer

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- Implemented controls for toggling visibility of background layers BG1 and BG2 in the DungeonCanvasViewer.
- Added a dropdown for selecting the type of BG2 layer, allowing for different rendering effects (Normal, Translucent, Addition, Dark, Off).
- Updated rendering logic to respect visibility settings and apply the selected alpha values for BG2 layer rendering.
- Enhanced debug logging to provide detailed information about bitmap states and rendering processes for both background layers.
This commit is contained in:
scawful
2025-10-09 16:25:05 -04:00
parent 9d0b6737cd
commit b135948ba2
5 changed files with 109 additions and 14 deletions
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28
src/app/zelda3/dungeon/object_drawer.cc
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@@ -37,6 +37,8 @@ absl::Status ObjectDrawer::DrawObject(const RoomObject& object,
// Select buffer based on layer
auto& target_bg = (object.layer_ == RoomObject::LayerType::BG2) ? bg2 : bg1;
printf("[DrawObject] Object ID=0x%02X using %s buffer (layer=%d)\n",
object.id_, (object.layer_ == RoomObject::LayerType::BG2) ? "BG2" : "BG1", object.layer_);
// Skip objects that don't have tiles loaded - check mutable object
if (mutable_obj.tiles().empty()) {
@@ -577,6 +579,8 @@ void ObjectDrawer::WriteTile16(gfx::BackgroundBuffer& bg, int tile_x, int tile_y
// Draw directly to bitmap instead of tile buffer to avoid being overwritten
auto& bitmap = bg.bitmap();
printf("[WriteTile16] Bitmap status: active=%d, width=%d, height=%d, surface=%p\n",
bitmap.is_active(), bitmap.width(), bitmap.height(), bitmap.surface());
if (!bitmap.is_active() || bitmap.width() == 0) {
printf("[WriteTile16] Bitmap not ready: active=%d, width=%d\n", bitmap.is_active(), bitmap.width());
return; // Bitmap not ready
@@ -609,8 +613,12 @@ void ObjectDrawer::DrawTileToBitmap(gfx::Bitmap& bitmap, const gfx::TileInfo& ti
// Draw an 8x8 tile directly to bitmap at pixel coordinates
if (!tiledata) return;
printf("[DrawTileToBitmap] Drawing tile ID=0x%02X at (%d,%d) with palette=%d\n",
tile_info.id_, pixel_x, pixel_y, tile_info.palette_);
// DEBUG: Check if bitmap is valid
if (!bitmap.is_active() || bitmap.width() == 0 || bitmap.height() == 0) {
printf("[DrawTileToBitmap] ERROR: Invalid bitmap - active=%d, size=%dx%d\n",
bitmap.is_active(), bitmap.width(), bitmap.height());
return;
}
// Calculate tile position in graphics sheet (128 pixels wide)
int tile_sheet_x = (tile_info.id_ % 16) * 8; // 16 tiles per row
@@ -621,6 +629,12 @@ void ObjectDrawer::DrawTileToBitmap(gfx::Bitmap& bitmap, const gfx::TileInfo& ti
if (palette_id > 10) palette_id = palette_id % 11;
uint8_t palette_offset = palette_id * 8; // 3BPP: 8 colors per palette
// Force a visible palette for debugging
if (palette_id == 0) {
palette_id = 1; // Use palette 1 instead of 0
palette_offset = palette_id * 8;
}
// Draw 8x8 pixels
for (int py = 0; py < 8; py++) {
for (int px = 0; px < 8; px++) {
@@ -632,8 +646,8 @@ void ObjectDrawer::DrawTileToBitmap(gfx::Bitmap& bitmap, const gfx::TileInfo& ti
int src_index = (tile_sheet_y + src_y) * 128 + (tile_sheet_x + src_x);
uint8_t pixel_index = tiledata[src_index];
// Apply palette and write to bitmap
uint8_t final_color = pixel_index + palette_offset;
// Apply palette and write to bitmap
uint8_t final_color = pixel_index + palette_offset;
int dest_x = pixel_x + px;
int dest_y = pixel_y + py;
@@ -641,6 +655,12 @@ void ObjectDrawer::DrawTileToBitmap(gfx::Bitmap& bitmap, const gfx::TileInfo& ti
int dest_index = dest_y * bitmap.width() + dest_x;
if (dest_index >= 0 && dest_index < static_cast<int>(bitmap.mutable_data().size())) {
bitmap.mutable_data()[dest_index] = final_color;
// Debug first pixel of each tile
if (py == 0 && px == 0) {
printf("[DrawTileToBitmap] Tile ID=0x%02X at (%d,%d): palette=%d, pixel_index=%d, final_color=%d\n",
tile_info.id_, pixel_x, pixel_y, palette_id, pixel_index, final_color);
}
}
}
}