diff --git a/src/xenia/gpu/d3d12/d3d12_command_processor.cc b/src/xenia/gpu/d3d12/d3d12_command_processor.cc
index bbd41da63..f4f88d061 100644
--- a/src/xenia/gpu/d3d12/d3d12_command_processor.cc
+++ b/src/xenia/gpu/d3d12/d3d12_command_processor.cc
@@ -1207,20 +1207,20 @@ bool D3D12CommandProcessor::IssueDraw(PrimitiveType primitive_type,
       render_target_cache_->GetCurrentPipelineRenderTargets();
 
   bool indexed = index_buffer_info != nullptr && index_buffer_info->guest_base;
-  // Per-edge tessellation requires an index buffer, but it contains per-edge
+  // Adaptive tessellation requires an index buffer, but it contains per-edge
   // tessellation factors (as floats) in it instead of control point indices.
-  bool per_edge_tessellation;
+  bool adaptive_tessellation;
   if (primitive_type == PrimitiveType::kTrianglePatch ||
       primitive_type == PrimitiveType::kQuadPatch) {
     TessellationMode tessellation_mode =
         TessellationMode(regs[XE_GPU_REG_VGT_HOS_CNTL].u32 & 0x3);
-    per_edge_tessellation = tessellation_mode == TessellationMode::kPerEdge;
-    if (per_edge_tessellation &&
+    adaptive_tessellation = tessellation_mode == TessellationMode::kAdaptive;
+    if (adaptive_tessellation &&
         (!indexed || index_buffer_info->format != IndexFormat::kInt32)) {
       return false;
     }
     // TODO(Triang3l): Implement all tessellation modes if games using any other
-    // than per-edge are found. The biggest question about them is what is being
+    // than adaptive are found. The biggest question about them is what is being
     // passed to vertex shader registers, especially if patches are drawn with
     // an index buffer.
     // https://www.slideshare.net/blackdevilvikas/next-generation-graphics-programming-on-xbox-360
@@ -1229,26 +1229,26 @@ bool D3D12CommandProcessor::IssueDraw(PrimitiveType primitive_type,
     //             for triangles though.
     // - Continuous: fractional_even partitioning, factors
     //               VGT_HOS_MAX_TESS_LEVEL + 1.
-    // - Per-edge: fractional_even partitioning, edge factors are float values
+    // - Adaptive: fractional_even partitioning, edge factors are float values
     //             in the index buffer clamped to VGT_HOS_MIN_TESS_LEVEL and
     //             VGT_HOS_MAX_TESS_LEVEL, plus one, inner factor appears to be
     //             the minimum of the two edge factors (but without adding 1) in
     //             each direction. This relies on memexport in games heavily for
     //             generation of the factor buffer, in Halo 3 the buffer is not
     //             initialized at all before the memexport pass.
-    // Per-edge partitional is likely fractional because this presentation,
+    // Adaptive partitioning is likely fractional because this presentation,
     // though only mentioning the Xbox 360, demonstrates adaptive tessellation
     // using fractional partitioning:
     // http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.221.4656&rep=rep1&type=pdf
-    if (tessellation_mode != TessellationMode::kPerEdge) {
+    if (tessellation_mode != TessellationMode::kAdaptive) {
       XELOGE(
-          "Tessellation mode %u is not implemented yet, only per-edge is "
+          "Tessellation mode %u is not implemented yet, only adaptive is "
           "partially available now - report the game to Xenia developers!",
           uint32_t(tessellation_mode));
       return false;
     }
   } else {
-    per_edge_tessellation = false;
+    adaptive_tessellation = false;
   }
 
   // TODO(Triang3l): Non-indexed line loops (by movc'ing zero to the vertex
@@ -1396,7 +1396,7 @@ bool D3D12CommandProcessor::IssueDraw(PrimitiveType primitive_type,
     shared_memory_->UseForReading();
     command_list->IASetIndexBuffer(&index_buffer_view);
     SubmitBarriers();
-    if (per_edge_tessellation) {
+    if (adaptive_tessellation) {
       // Index buffer used for per-edge factors.
       command_list->DrawInstanced(index_count, 1, 0, 0);
     } else {
diff --git a/src/xenia/gpu/d3d12/pipeline_cache.cc b/src/xenia/gpu/d3d12/pipeline_cache.cc
index e0b203c34..4ee1f1461 100644
--- a/src/xenia/gpu/d3d12/pipeline_cache.cc
+++ b/src/xenia/gpu/d3d12/pipeline_cache.cc
@@ -423,7 +423,7 @@ PipelineCache::UpdateStatus PipelineCache::UpdateShaderStages(
       } else {
         update_desc_.HS.pShaderBytecode = continuous_triangle_hs;
         update_desc_.HS.BytecodeLength = sizeof(continuous_triangle_hs);
-        // TODO(Triang3l): True per-edge tessellation when memexport is added.
+        // TODO(Triang3l): True adaptive tessellation when memexport is added.
       }
       break;
     case PrimitiveType::kQuadPatch:
@@ -433,7 +433,7 @@ PipelineCache::UpdateStatus PipelineCache::UpdateShaderStages(
       } else {
         update_desc_.HS.pShaderBytecode = continuous_quad_hs;
         update_desc_.HS.BytecodeLength = sizeof(continuous_quad_hs);
-        // TODO(Triang3l): True per-edge tessellation when memexport is added.
+        // TODO(Triang3l): True adaptive tessellation when memexport is added.
       }
       break;
     default:
diff --git a/src/xenia/gpu/dxbc_shader_translator.cc b/src/xenia/gpu/dxbc_shader_translator.cc
index 81329b047..e6be3c805 100644
--- a/src/xenia/gpu/dxbc_shader_translator.cc
+++ b/src/xenia/gpu/dxbc_shader_translator.cc
@@ -527,7 +527,7 @@ void DxbcShaderTranslator::StartVertexOrDomainShader() {
     // When using indexable temps, copy through a r# because x# are apparently
     // only accessible via mov.
     // TODO(Triang3l): Investigate what should be written for primitives (or
-    // even control points) for non-per-edge tessellation modes (they may
+    // even control points) for non-adaptive tessellation modes (they may
     // possibly have an index buffer).
     uint32_t primitive_id_gpr_index =
         vertex_shader_type_ == VertexShaderType::kTriangleDomain ? 1 : 0;
diff --git a/src/xenia/gpu/xenos.h b/src/xenia/gpu/xenos.h
index 1935a47f3..b661342d6 100644
--- a/src/xenia/gpu/xenos.h
+++ b/src/xenia/gpu/xenos.h
@@ -36,23 +36,23 @@ enum class PrimitiveType : uint32_t {
   kQuadList = 0x0D,
   kQuadStrip = 0x0E,
   kPolygon = 0x0F,
-  // These are from Adreno 2xx, and also exist on R600, but on Xenos, these
-  // don't exist or have different values (
-  // k2DCopyRectListV0 = 0x10,
-  // k2DCopyRectListV1 = 0x11,
-  // k2DCopyRectListV2 = 0x12,
-  // k2DCopyRectListV3 = 0x13,
-  kTrianglePatch = 0x11,
-  kQuadPatch = 0x12,
+  k2DCopyRectListV0 = 0x10,
+  k2DCopyRectListV1 = 0x11,
+  k2DCopyRectListV2 = 0x12,
+  k2DCopyRectListV3 = 0x13,
   k2DFillRectList = 0x14,
   k2DLineStrip = 0x15,
   k2DTriStrip = 0x16,
+  // Tessellation patches (D3DTPT) - reusing 2DCopyRectList types.
+  kLinePatch = 0x10,
+  kTrianglePatch = 0x11,
+  kQuadPatch = 0x12,
 };
 
 enum class TessellationMode : uint32_t {
   kDiscrete = 0,
   kContinuous = 1,
-  kPerEdge = 2,
+  kAdaptive = 2,
 };
 
 enum class Dimension : uint32_t {