diff options
Diffstat (limited to 'src/ppu/internals.c')
| -rw-r--r-- | src/ppu/internals.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/ppu/internals.c b/src/ppu/internals.c index 66c0ac1..a60cb68 100644 --- a/src/ppu/internals.c +++ b/src/ppu/internals.c @@ -4,6 +4,9 @@ #include "ppu/internals.h" #include "ppu/types.h" +uint8_t g_hh_ppu_vram_buffer[HH_PPU_COMMAND_BUFFER_SIZE] = { 0 }; +size_t g_hh_ppu_vram_buffer_head = 0; + bool hh_ppu_vram_valid_address(hh_ppu_addr_t addr) { #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wtype-limits" @@ -17,7 +20,16 @@ bool hh_ppu_vram_valid_address(hh_ppu_addr_t addr) { } void hh_ppu_vram_write(hh_s_ppu_vram_data data) { - for (unsigned i = 0; i < data.size; i++) hh_ppu_vram_dwrite(data.offset + i, data.data[i]); + for (unsigned i = 0; i < data.size; i++) { + hh_ppu_addr_t ppu_addr = data.offset + i; + hh_ppu_data_t ppu_data = data.data[i]; + hh_ppu_vram_buffer((uint8_t[4]) { + (ppu_addr >> 8) & 0xff, + (ppu_addr >> 0) & 0xff, + (ppu_data >> 8) & 0xff, + (ppu_data >> 0) & 0xff, + }); + } } hh_s_ppu_vram_data hh_ppu_2nat_bam(hh_s_ppu_loc_bam_entry e) { @@ -73,3 +85,18 @@ hh_s_ppu_vram_data hh_ppu_2nat_color(hh_ppu_rgb_color_t rgb) { hh_s_ppu_vram_data out = {.data = data, .size = HH_PPU_VRAM_PAL_ENTRY_SIZE}; return out; } + +void hh_ppu_vram_buffer(uint8_t data[4]) { + size_t head = g_hh_ppu_vram_buffer_head; + g_hh_ppu_vram_buffer[head+0] = data[0]; + g_hh_ppu_vram_buffer[head+1] = data[1]; + g_hh_ppu_vram_buffer[head+2] = data[2]; + g_hh_ppu_vram_buffer[head+3] = data[3]; + g_hh_ppu_vram_buffer_head += 4; +} + +void hh_ppu_vram_flush() { + hh_ppu_vram_dwrite(g_hh_ppu_vram_buffer, g_hh_ppu_vram_buffer_head); + g_hh_ppu_vram_buffer_head = 0; +} + |