jaby
/
jabyengine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity

Introduce LookUpColor4

This commit is contained in:
jaby 2023-12-21 12:50:42 -05:00
parent 6f1980393d
commit 239a7ceb3f
2 changed files with 23 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
include/PSX/GPU/gpu_types.hpp
View File

@ -167,7 +167,25 @@ namespace JabyEngine {
constexpr void set_lu_id(uint8_t new_lu_id, size_t at) {
this->lu_id[at] = new_lu_id;
}
};
struct LookUpColor4 {
uint8_t lu_id[2];
static constexpr LookUpColor4 from_id(uint8_t px0, uint8_t px1, uint8_t px2, uint8_t px3) {
return {{static_cast<uint8_t>((px0 << 4) | px1), static_cast<uint8_t>((px2 << 4) | px3)}};
}
constexpr uint8_t get_lu_id(size_t at) const {
const auto value = this->lu_id[at >> 1];
return (value & 0x1) ? value & 0xF : value >> 4;
}
constexpr void set_lu_id(uint8_t new_lu_id, size_t at) {
this->lu_id[at >> 1] = bit::value::set_normalized(this->lu_id[at >> 1], BitRange(4*(at&0x1), 4).with(new_lu_id));
}
uint16_t force_read() const {
return *const_cast<const volatile uint16_t*>(reinterpret_cast<const uint16_t*>(this->lu_id));
}

19
src/Library/src/BootLoader/gpu_boot.cpp
View File

@ -93,21 +93,12 @@ namespace JabyEngine {
void setup() {
asm("# Planschi1");
auto test = LookUpColor8::from_ids(0xAA, 0xBB);
test.force_read();
auto value = LookUpColor4::from_id(0xA, 0xB, 0xC, 0xF);
for(size_t n = 0; n < 4; n++) {
printf(">>> %i\n", value.get_lu_id(n));
}
asm("# Planschi2");
test.set_lu_id(0xCC, 0);
test.set_lu_id(0xDD, 1);
test.force_read();
asm("# Planschi3");
test.set_lu_id(*reinterpret_cast<uint8_t*>(0xAA), 0);
test.set_lu_id(*reinterpret_cast<uint8_t*>(0xDD), 1);
test.force_read();
asm("# Planschi4");
test.set_lu_id(*reinterpret_cast<uint8_t*>(0xAA), *reinterpret_cast<uint8_t*>(0xAE));
test.set_lu_id(*reinterpret_cast<uint8_t*>(0xDD), *reinterpret_cast<uint8_t*>(0xDE));
test.force_read();
asm("# Planschi5");
GPU_IO::GP1.write(GPU_IO::Command::Reset());
configurate_display();