Cycles: remove support for rendering hair as triangle and lines

Triangles were very memory intensive. The only reason they were not removed yet
is that they gave more accurate results, but there will be an accurate 3D curve
primitive added for this.

Line rendering was always poor quality since the ends do not match up. To keep CPU
and GPU compatibility we just remove them entirely. They could be brought back if
an Embree compatible implementation is added, but it's not clear to me that there
is a use case for these that we'd consider important.

Ref T73778

Reviewers: #cycles

Subscribers:

1 files changed, 0 insertions, 26 deletions

diff --git a/intern/cycles/render/curves.h b/intern/cycles/render/curves.h
index ade289a402e..047db32b44b 100644
--- a/intern/cycles/render/curves.h
+++ b/intern/cycles/render/curves.h
@@ -29,15 +29,6 @@ class Scene;
 
 void curvebounds(float *lower, float *upper, float3 *p, int dim);
 
-typedef enum CurvePrimitiveType {
-  CURVE_TRIANGLES = 0,
-  CURVE_LINE_SEGMENTS = 1,
-  CURVE_SEGMENTS = 2,
-  CURVE_RIBBONS = 3,
-
-  CURVE_NUM_PRIMITIVE_TYPES,
-} CurvePrimitiveType;
-
 typedef enum CurveShapeType {
   CURVE_RIBBON = 0,
   CURVE_THICK = 1,
@@ -45,17 +36,6 @@ typedef enum CurveShapeType {
   CURVE_NUM_SHAPE_TYPES,
 } CurveShapeType;
 
-typedef enum CurveTriangleMethod {
-  CURVE_CAMERA_TRIANGLES,
-  CURVE_TESSELATED_TRIANGLES
-} CurveTriangleMethod;
-
-typedef enum CurveLineMethod {
-  CURVE_ACCURATE,
-  CURVE_CORRECTED,
-  CURVE_UNCORRECTED
-} CurveLineMethod;
-
 class ParticleCurveData {
 
  public:
@@ -85,17 +65,11 @@ class ParticleCurveData {
 
 class CurveSystemManager {
  public:
-  CurvePrimitiveType primitive;
   CurveShapeType curve_shape;
-  CurveLineMethod line_method;
-  CurveTriangleMethod triangle_method;
-  int resolution;
   int subdivisions;
 
   bool use_curves;
-  bool use_encasing;
   bool use_backfacing;
-  bool use_tangent_normal_geometry;
 
   bool need_update;
   bool need_mesh_update;