maxwell_3d: Fix depth clamping register

Using deko3d as reference:
https://github.com/devkitPro/deko3d/blob/4e47ba0013552e592a86ab7a2510d1e7dadf236a/source/maxwell/gpu_3d_state.cpp#L42

We were using bits 3 and 4 to determine depth clamping, but these are
the same both enabled and disabled:

state->depthClampEnable ? 0x101A : 0x181D

The same happens on Nvidia's OpenGL driver, where they do something like
this (default capabilities, GL 4.5 compatibility):

(state & DEPTH_CLAMP) != 0 ? 0x201a : 0x281c

There's always a difference between the first bits in this register, but
bit 11 is consistently disabled on both deko3d/NVN and OpenGL. This
commit changes yuzu's behaviour to use bit 11 to determine depth
clamping.

- Fixes depth issues on Super Mario Odyssey's intro.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index 3dfba8197..5e522e0d2 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -1179,6 +1179,7 @@ public:
                     BitField<0, 1, u32> depth_range_0_1;
                     BitField<3, 1, u32> depth_clamp_near;
                     BitField<4, 1, u32> depth_clamp_far;
+                    BitField<11, 1, u32> depth_clamp_disabled;
                 } view_volume_clip_control;
 
                 INSERT_UNION_PADDING_WORDS(0x1F);