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Send char by char

This commit is contained in:
Jaby Blubb 2023-12-16 23:31:09 +01:00
parent 6d97cc4e74
commit 9d2b8d902d
1 changed files with 16 additions and 19 deletions
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35
src/Library/src/BootLoader/gpu_boot.cpp
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@ -54,16 +54,10 @@ namespace JabyEngine {
}
};
struct Row {
Line character[AmountOfChars];
};
Row rows[FontSize.height];
Line lines[FontSize.height];
void load_char(int32_t chr_idx, const uint16_t* bit_map) {
for(auto& cur_row : this->rows) {
auto& cur_line = cur_row.character[chr_idx];
void load_char(const uint16_t* bit_map) {
for(auto& cur_line : this->lines) {
cur_line.load(__builtin_bswap16(*bit_map++));
}
}
@ -100,20 +94,23 @@ namespace JabyEngine {
static const auto LowerCaseLetter = RangeChar{{0x81, 64}, 26};
void load() {
FontBuffer buffer;
for(size_t n = 0; n < 4; n++) {
buffer.load_char(n, SysCall::Krom2RawAdd(0x8200 | (UpperCaseLetter.start_char.base_offset + n)));
}
FontBuffer buffer[2];
GPU::internal::DMA::Receive::prepare();
GPU::internal::DMA::Receive::set_dst(PositionU16::create(0, 0), SizeU16::create(16*4, 16));
GPU::internal::DMA::Receive::set_src(reinterpret_cast<const uintptr_t>(&buffer.rows));
printf("Sending...\n");
GPU::internal::DMA::Receive::start(sizeof(buffer)/4/16);
for(size_t n = 0; n < 4; n++) {
auto& cur_buffer = buffer[n&0x1];
const auto vram_pos = PositionU16::create(16*n, 0);
cur_buffer.load_char(SysCall::Krom2RawAdd(0x8200 | (UpperCaseLetter.start_char.base_offset + n)));
GPU::internal::DMA::wait();
GPU::internal::DMA::Receive::set_dst(vram_pos, SizeU16::create(16, 16));
GPU::internal::DMA::Receive::set_src(reinterpret_cast<const uintptr_t>(&cur_buffer.lines));
GPU::internal::DMA::Receive::start(sizeof(FontBuffer)/4/16);
}
GPU::internal::DMA::wait();
GPU::internal::DMA::end();
printf("Done!\n");
}
}