ddbaf678 |
1 | |
2 | /* |
3 | * q: Why bother with GPU stuff in a plugin-based emu core? |
4 | * a: mostly because of busy bits, we have all the needed timing info |
5 | * that GPU plugin doesn't. |
6 | */ |
7 | |
0486fdc9 |
8 | #define PSXGPU_LCF (1<<31) |
9 | #define PSXGPU_nBUSY (1<<26) |
10 | #define PSXGPU_ILACE (1<<22) |
11 | #define PSXGPU_DHEIGHT (1<<19) |
12 | |
13 | // both must be set for interlace to work |
14 | #define PSXGPU_ILACE_BITS (PSXGPU_ILACE | PSXGPU_DHEIGHT) |
ddbaf678 |
15 | |
16 | #define HW_GPU_STATUS psxHu32ref(0x1814) |
17 | |
18 | // TODO: handle com too |
19 | #define PSXGPU_TIMING_BITS (PSXGPU_LCF | PSXGPU_nBUSY) |
20 | |
21 | #define gpuSyncPluginSR() { \ |
22 | HW_GPU_STATUS &= PSXGPU_TIMING_BITS; \ |
23 | HW_GPU_STATUS |= GPU_readStatus() & ~PSXGPU_TIMING_BITS; \ |
24 | } |