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| author | Exophase | 2012-10-07 20:13:22 +0300 |
|---|---|---|
| committer | notaz | 2012-10-07 20:32:09 +0300 |
| commit | 7d5140f5d608cfe3f69cc4d75e78c8c2b30b7d1a (patch) | |
| tree | 4d5e656de7693a076322b254d5c02b61130a7838 /plugins/gpu_neon/psx_gpu | |
| parent | af044cbf908762f4e5d66384aa7dffeae58844aa (diff) | |
| download | pcsx_rearmed-7d5140f5d608cfe3f69cc4d75e78c8c2b30b7d1a.tar.gz pcsx_rearmed-7d5140f5d608cfe3f69cc4d75e78c8c2b30b7d1a.tar.bz2 pcsx_rearmed-7d5140f5d608cfe3f69cc4d75e78c8c2b30b7d1a.zip | |
psx_gpu: increase reciprocal accuracy
fixes 448 height issue
Diffstat (limited to 'plugins/gpu_neon/psx_gpu')
| -rw-r--r-- | plugins/gpu_neon/psx_gpu/psx_gpu.c | 12 | ||||
| -rw-r--r-- | plugins/gpu_neon/psx_gpu/psx_gpu_arm_neon.S | 6 |
2 files changed, 9 insertions, 9 deletions
diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu.c b/plugins/gpu_neon/psx_gpu/psx_gpu.c index 68996c1..98aacc3 100644 --- a/plugins/gpu_neon/psx_gpu/psx_gpu.c +++ b/plugins/gpu_neon/psx_gpu/psx_gpu.c @@ -854,7 +854,7 @@ void compute_all_gradients(psx_gpu_struct *psx_gpu, vertex_struct *a, \ dup_2x32b(edge_shifts, edge_shift); \ sub_2x32b(heights_b, heights, c_0x01); \ - shr_2x32b(height_reciprocals, edge_shifts, 12); \ + shr_2x32b(height_reciprocals, edge_shifts, 10); \ \ mla_2x32b(heights_b, x_starts, heights); \ bic_immediate_4x16b(vector_cast(vec_4x16u, edge_shifts), 0xE0); \ @@ -883,8 +883,8 @@ void compute_all_gradients(psx_gpu_struct *psx_gpu, vertex_struct *a, sub_2x32b(widths, x_ends, x_starts); \ width_alt = x_c - start_c; \ \ - shr_2x32b(height_reciprocals, edge_shifts, 12); \ - height_reciprocal_alt = edge_shift_alt >> 12; \ + shr_2x32b(height_reciprocals, edge_shifts, 10); \ + height_reciprocal_alt = edge_shift_alt >> 10; \ \ bic_immediate_4x16b(vector_cast(vec_4x16u, edge_shifts), 0xE0); \ edge_shift_alt &= 0x1F; \ @@ -4526,12 +4526,12 @@ void initialize_reciprocal_table(void) { shift = __builtin_clz(height); height_normalized = height << shift; - height_reciprocal = ((1ULL << 50) + (height_normalized - 1)) / + height_reciprocal = ((1ULL << 52) + (height_normalized - 1)) / height_normalized; - shift = 32 - (50 - shift); + shift = 32 - (52 - shift); - reciprocal_table[height] = (height_reciprocal << 12) | shift; + reciprocal_table[height] = (height_reciprocal << 10) | shift; } } diff --git a/plugins/gpu_neon/psx_gpu/psx_gpu_arm_neon.S b/plugins/gpu_neon/psx_gpu/psx_gpu_arm_neon.S index 294685a..3331d5d 100644 --- a/plugins/gpu_neon/psx_gpu/psx_gpu_arm_neon.S +++ b/plugins/gpu_neon/psx_gpu/psx_gpu_arm_neon.S @@ -657,7 +657,7 @@ function(compute_all_gradients) \ vdup.u32 edge_shifts, temp; \ vsub.u32 heights_b, heights, c_0x01; \ - vshr.u32 height_reciprocals, edge_shifts, #12; \ + vshr.u32 height_reciprocals, edge_shifts, #10; \ \ vmla.s32 heights_b, x_starts, heights; \ vbic.u16 edge_shifts, #0xE0; \ @@ -682,8 +682,8 @@ function(compute_all_gradients) vsub.u32 heights_b, heights, c_0x01; \ sub height_b_alt, height_minor_b, #1; \ \ - vshr.u32 height_reciprocals, edge_shifts, #12; \ - lsr height_reciprocal_alt, edge_shift_alt, #12; \ + vshr.u32 height_reciprocals, edge_shifts, #10; \ + lsr height_reciprocal_alt, edge_shift_alt, #10; \ \ vmla.s32 heights_b, x_starts, heights; \ mla height_b_alt, height_minor_b, start_c, height_b_alt; \ |