Merge branch 'tilemap-build-system' into dev

1 files changed, 24 insertions, 0 deletions

diff --git a/src/ppu/ppu.c b/src/ppu/ppu.c
index df14b9f..1f46b16 100644
--- a/src/ppu/ppu.c
+++ b/src/ppu/ppu.c
@@ -3,6 +3,7 @@
 #include "ppu/consts.h"
 #include "ppu/internals.h"
 #include "ppu/ppu.h"
+#include "tilemap.h"
 
 void hh_ppu_update_foreground(unsigned index, hh_s_ppu_loc_fam_entry e) {
 	hh_s_ppu_vram_data s = hh_ppu_2nat_fam(e);
@@ -46,3 +47,26 @@ void hh_ppu_update_color(unsigned palette_index, unsigned color_index, hh_ppu_rg
 	hh_ppu_vram_write(c);
 	free(c.data);
 }
+
+void hh_ppu_load_tilemap() {
+	for (size_t sprite_idx = 0; sprite_idx < HH_TM_SIZE; sprite_idx++) {
+		for (size_t word_idx = 0; word_idx < HH_PPU_NATIVE_SPRITE_SIZE; word_idx++) {
+			uint32_t native_word = g_hh_tilemap_rom[word_idx + sprite_idx * HH_PPU_NATIVE_SPRITE_SIZE];
+			uint32_t native_word_bytes[4] = { // TODO: check endianness of stm32
+				(native_word >> 24) & 0xff,
+				(native_word >> 16) & 0xff,
+				(native_word >> 8) & 0xff,
+				(native_word >> 0) & 0xff,
+			};
+			uint16_t ppu_words[2] = {
+				(native_word_bytes[2] << 8) | (native_word_bytes[3] << 0),
+				(native_word_bytes[0] << 8) | (native_word_bytes[1] << 0),
+			};
+			hh_ppu_vram_write((hh_s_ppu_vram_data) {
+				.data = ppu_words,
+				.offset = HH_PPU_VRAM_TMM_OFFSET + sprite_idx * HH_PPU_VRAM_TMM_SPRITE_SIZE + word_idx * 2,
+				.size = 2,
+			});
+		}
+	}
+}