3 files changed, 31 insertions, 5 deletions
diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp
index a04e00ecb..2bc534be3 100644
--- a/src/video_core/engines/maxwell_3d.cpp
+++ b/src/video_core/engines/maxwell_3d.cpp
@@ -69,6 +69,15 @@ void Maxwell3D::InitializeRegisterDefaults() {
     // TODO(Rodrigo): Most games do not set a point size. I think this is a case of a
     // register carrying a default value. Assume it's OpenGL's default (1).
     regs.point_size = 1.0f;
+
+    // TODO(bunnei): Some games do not initialize the color masks (e.g. Sonic Mania). Assuming a
+    // default of enabled fixes rendering here.
+    for (std::size_t color_mask = 0; color_mask < Regs::NumRenderTargets; color_mask++) {
+        regs.color_mask[color_mask].R.Assign(1);
+        regs.color_mask[color_mask].G.Assign(1);
+        regs.color_mask[color_mask].B.Assign(1);
+        regs.color_mask[color_mask].A.Assign(1);
+    }
 }
 
 void Maxwell3D::CallMacroMethod(u32 method, std::vector<u32> parameters) {
diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index 9e480dc39..4f137e693 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -389,6 +389,13 @@ public:
                 ReverseSubtract = 3,
                 Min = 4,
                 Max = 5,
+
+                // These values are used by Nouveau and some games.
+                AddGL = 0x8006,
+                SubtractGL = 0x8007,
+                ReverseSubtractGL = 0x8008,
+                MinGL = 0x800a,
+                MaxGL = 0x800b
             };
 
             enum class Factor : u32 {
@@ -624,7 +631,16 @@ public:
                     }
                 } zeta;
 
-                INSERT_PADDING_WORDS(0x5B);
+                INSERT_PADDING_WORDS(0x41);
+
+                union {
+                    BitField<0, 4, u32> stencil;
+                    BitField<4, 4, u32> unknown;
+                    BitField<8, 4, u32> scissor;
+                    BitField<12, 4, u32> viewport;
+                } clear_flags;
+
+                INSERT_PADDING_WORDS(0x19);
 
                 std::array<VertexAttribute, NumVertexAttributes> vertex_attrib_format;
 
@@ -1127,6 +1143,7 @@ ASSERT_REG_POSITION(stencil_back_func_mask, 0x3D7);
 ASSERT_REG_POSITION(color_mask_common, 0x3E4);
 ASSERT_REG_POSITION(rt_separate_frag_data, 0x3EB);
 ASSERT_REG_POSITION(zeta, 0x3F8);
+ASSERT_REG_POSITION(clear_flags, 0x43E);
 ASSERT_REG_POSITION(vertex_attrib_format, 0x458);
 ASSERT_REG_POSITION(rt_control, 0x487);
 ASSERT_REG_POSITION(zeta_width, 0x48a);
diff --git a/src/video_core/engines/shader_bytecode.h b/src/video_core/engines/shader_bytecode.h
index 83a6fd875..7e8449bc4 100644
--- a/src/video_core/engines/shader_bytecode.h
+++ b/src/video_core/engines/shader_bytecode.h
@@ -153,6 +153,7 @@ enum class PredCondition : u64 {
     NotEqual = 5,
     GreaterEqual = 6,
     LessThanWithNan = 9,
+    LessEqualWithNan = 11,
     GreaterThanWithNan = 12,
     NotEqualWithNan = 13,
     GreaterEqualWithNan = 14,
@@ -261,7 +262,7 @@ enum class FlowCondition : u64 {
     Fcsm_Tr = 0x1C, // TODO(bunnei): What is this used for?
 };
 
-enum class ControlCode : u64 {
+enum class ConditionCode : u64 {
     F = 0,
     LT = 1,
     EQ = 2,
@@ -569,7 +570,6 @@ union Instruction {
         BitField<39, 2, u64> tab5cb8_2;
         BitField<41, 3, u64> tab5c68_1;
         BitField<44, 2, u64> tab5c68_0;
-        BitField<47, 1, u64> cc;
         BitField<48, 1, u64> negate_b;
     } fmul;
 
@@ -831,7 +831,7 @@ union Instruction {
     union {
         BitField<0, 3, u64> pred0;
         BitField<3, 3, u64> pred3;
-        BitField<8, 5, ControlCode> cc; // flag in cc
+        BitField<8, 5, ConditionCode> cc; // flag in cc
         BitField<39, 3, u64> pred39;
         BitField<42, 1, u64> neg_pred39;
         BitField<45, 4, PredOperation> op; // op with pred39
@@ -1235,7 +1235,7 @@ union Instruction {
     BitField<60, 1, u64> is_b_gpr;
     BitField<59, 1, u64> is_c_gpr;
     BitField<20, 24, s64> smem_imm;
-    BitField<0, 5, ControlCode> flow_control_code;
+    BitField<0, 5, ConditionCode> flow_condition_code;
 
     Attribute attribute;
     Sampler sampler;