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Emulator: Remove naive old tile draw code

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Riyyi
2022-10-18 20:08:07 +02:00
parent e566adad50
commit 91884d65fb
2 changed files with 1 additions and 54 deletions
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src/ppu.cpp
-52
View File
@@ -105,22 +105,6 @@ void PPU::render()
m_screen[i + 2] = pixel[2];
}
}
else {
// // Tile map
// uint32_t tile_map_size = 32 * 32; // 1 KiB
// uint32_t bg_tile_map_address = (lcd_control & LCDC::BGTileMapArea) ? 0x9c00 : 0x9800;
// // uint32_t window_tile_map_address = (lcd_control & LCDC::WindowTileMapArea) ? 0x9c00 : 0x9800;
// // Tile data
// // uint32_t tile_data_size = 4096; // 4KiB / 16B = 256 tiles
// bool tile_data_mode = lcd_control & LCDC::BGandWindowTileDataArea;
// uint32_t tile_data_address = (tile_data_mode) ? 0x8000 : 0x8800;
// for (uint32_t i = 0; i < tile_map_size; ++i) {
// uint8_t tile_index = Emu::the().readMemory(bg_tile_map_address + i);
// // drawTile((i % 32) * TILE_WIDTH, (i / 32) * TILE_HEIGHT, tile_data_address + (tile_index * TILE_SIZE));
// }
}
auto& scene = Inferno::Application::the().scene();
auto texture = std::make_shared<Inferno::Texture>(m_screen.data(), SCREEN_WIDTH, SCREEN_HEIGHT, FORMAT_SIZE);
@@ -252,42 +236,6 @@ void PPU::pixelFifo()
}
}
void PPU::drawTile(uint32_t x, uint32_t y, uint32_t tile_address)
{
uint32_t viewport_x = Emu::the().readMemory(0xff43);
uint32_t viewport_y = Emu::the().readMemory(0xff42);
// Tile is not within viewport
if ((x < viewport_x || x > viewport_x + SCREEN_WIDTH)
|| (y < viewport_y || y > viewport_y + SCREEN_HEIGHT)) {
return;
}
size_t screen_index = ((x - viewport_x) * FORMAT_SIZE) + ((y - viewport_y) * SCREEN_WIDTH * FORMAT_SIZE);
for (uint8_t tile_y = 0; tile_y < TILE_SIZE; tile_y += 2) {
uint8_t pixels_lsb = Emu::the().readMemory(tile_address + tile_y);
uint8_t pixels_msb = Emu::the().readMemory(tile_address + tile_y + 1);
for (uint8_t tile_x = 0; tile_x < 8; ++tile_x) {
size_t index = screen_index + (tile_x * FORMAT_SIZE);
// FIXME: Tile is partly out of viewport?
if (index + 2 >= m_screen.size()) {
continue;
}
uint8_t pixel_index = (pixels_lsb >> (7 - tile_x) | ((pixels_msb >> (7 - tile_x)) << 1)) & 0x3;
auto pixel_color = getPixelColor(pixel_index, Palette::BGP);
m_screen[index + 0] = pixel_color[0];
m_screen[index + 1] = pixel_color[1];
m_screen[index + 2] = pixel_color[2];
}
// Move to next line
screen_index += SCREEN_WIDTH * FORMAT_SIZE;
}
}
std::array<uint8_t, 3> PPU::getPixelColor(uint8_t color_index, Palette palette)
{
VERIFY(color_index < 4, "trying to fetch invalid color index '{}'", color_index);
src/ppu.h
+1 -2
View File
@@ -80,7 +80,6 @@ public:
void render();
void pixelFifo();
void drawTile(uint32_t screen_x, uint32_t screen_y, uint32_t tile_address);
std::array<uint8_t, 3> getPixelColor(uint8_t color_index, Palette palette);
void resetFrame();
@@ -95,6 +94,6 @@ private:
uint8_t m_viewport_y { 0 };
PixelFifo m_pixel_fifo;
uint32_t m_entity;
uint32_t m_entity { 0 };
std::array<uint8_t, SCREEN_WIDTH * SCREEN_HEIGHT * FORMAT_SIZE> m_screen;
};