Merge branch 'asset-uuid--archived' into asset-engine--archivedasset-engine--archived

1 files changed, 54 insertions, 0 deletions

diff --git a/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl b/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl
new file mode 100644
index 00000000000..95cd69ba310
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/object_motion_vert.glsl
@@ -0,0 +1,54 @@
+
+uniform mat4 currModelMatrix;
+uniform mat4 prevModelMatrix;
+uniform mat4 nextModelMatrix;
+uniform bool useDeform;
+
+#ifdef HAIR
+uniform samplerBuffer prvBuffer; /* RGBA32F */
+uniform samplerBuffer nxtBuffer; /* RGBA32F */
+#else
+in vec3 pos;
+in vec3 prv; /* Previous frame position. */
+in vec3 nxt; /* Next frame position. */
+#endif
+
+out vec3 currWorldPos;
+out vec3 prevWorldPos;
+out vec3 nextWorldPos;
+
+void main()
+{
+#ifdef HAIR
+  bool is_persp = (ProjectionMatrix[3][3] == 0.0);
+  float time, thick_time, thickness;
+  vec3 tan, binor;
+  vec3 wpos;
+
+  hair_get_pos_tan_binor_time(is_persp,
+                              ModelMatrixInverse,
+                              ViewMatrixInverse[3].xyz,
+                              ViewMatrixInverse[2].xyz,
+                              wpos,
+                              tan,
+                              binor,
+                              time,
+                              thickness,
+                              thick_time);
+
+  int id = hair_get_base_id();
+  vec3 pos = texelFetch(hairPointBuffer, id).point_position;
+  vec3 prv = texelFetch(prvBuffer, id).point_position;
+  vec3 nxt = texelFetch(nxtBuffer, id).point_position;
+#endif
+  prevWorldPos = (prevModelMatrix * vec4(useDeform ? prv : pos, 1.0)).xyz;
+  currWorldPos = (currModelMatrix * vec4(pos, 1.0)).xyz;
+  nextWorldPos = (nextModelMatrix * vec4(useDeform ? nxt : pos, 1.0)).xyz;
+  /* Use jittered projmatrix to be able to match exact sample depth (depth equal test).
+   * Note that currModelMatrix needs to also be equal to ModelMatrix for the samples to match. */
+#ifndef HAIR
+  gl_Position = ViewProjectionMatrix * vec4(currWorldPos, 1.0);
+#else
+  gl_Position = ViewProjectionMatrix * vec4(wpos, 1.0);
+#endif
+}