WiiUPluginLoaderBackend/source/utils/dc.h

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2024-05-10 16:36:47 +02:00
#pragma once
#include <coreinit/debug.h>
#include <coreinit/screen.h>
extern "C" uint32_t __OSPhysicalToEffectiveUncached(uint32_t);
static inline uint32_t DCReadReg32(OSScreenID screen, uint32_t index) {
if (OSIsECOMode()) {
return 0;
}
auto regs = (uint32_t *) __OSPhysicalToEffectiveUncached(0xc200000);
return regs[index + (screen * 0x200)];
}
static inline void DCWriteReg32(OSScreenID screen, uint32_t index, uint32_t val) {
if (OSIsECOMode()) {
return;
}
auto regs = (uint32_t *) __OSPhysicalToEffectiveUncached(0xc200000);
regs[index + (screen * 0x200)] = val;
}
// https://www.x.org/docs/AMD/old/42589_rv630_rrg_1.01o.pdf (reg id in document / 4)
#define D1GRPH_ENABLE_REG 0x1840
#define D1GRPH_CONTROL_REG 0x1841
#define D1GRPH_PITCH_REG 0x1848
#define D1OVL_PITCH_REG 0x1866
#define D1GRPH_X_END_REG 0x184d
#define D1GRPH_Y_END_REG 0x184e
static inline void SetDCPitchReg(OSScreenID screen, uint16_t pitch) {
DCWriteReg32(screen, D1GRPH_PITCH_REG, pitch);
DCWriteReg32(screen, D1OVL_PITCH_REG, pitch);
}