Cleanup: Eevee: Remove custom volumetric matrix

This was the same as using the inverse obmat.

4 files changed, 7 insertions, 22 deletions

diff --git a/source/blender/draw/engines/eevee/eevee_volumes.c b/source/blender/draw/engines/eevee/eevee_volumes.c
index 39942617d2b..9a59b95b2e8 100644
--- a/source/blender/draw/engines/eevee/eevee_volumes.c
+++ b/source/blender/draw/engines/eevee/eevee_volumes.c
@@ -404,20 +404,6 @@ void EEVEE_volumes_cache_object_add(EEVEE_ViewLayerData *sldata,
 
   BKE_mesh_texspace_get_reference((struct Mesh *)ob->data, NULL, &texcoloc, NULL, &texcosize);
 
-  float(*imat)[4] = ob->imat;
-
-  if ((ob->base_flag & BASE_FROM_DUPLI) != 0) {
-    /* TODO Remove from here and use a dedicated buffer. */
-    EEVEE_InstanceVolumeMatrix *ivm = (EEVEE_InstanceVolumeMatrix *)DRW_drawdata_ensure(
-        &ob->id,
-        (DrawEngineType *)EEVEE_volumes_cache_object_add,
-        sizeof(EEVEE_InstanceVolumeMatrix),
-        NULL,
-        NULL);
-    copy_m4_m4(ivm->volume_mat, ob->imat);
-    imat = ivm->volume_mat;
-  }
-
   /* TODO(fclem) remove those "unnecessary" UBOs */
   DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo);
   DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo);
@@ -426,7 +412,6 @@ void EEVEE_volumes_cache_object_add(EEVEE_ViewLayerData *sldata,
   DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo);
 
   DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo);
-  DRW_shgroup_uniform_mat4(grp, "volumeObjectMatrix", imat);
   DRW_shgroup_uniform_vec3(grp, "volumeOrcoLoc", texcoloc, 1);
   DRW_shgroup_uniform_vec3(grp, "volumeOrcoSize", texcosize, 1);
 
@@ -477,7 +462,7 @@ void EEVEE_volumes_cache_object_add(EEVEE_ViewLayerData *sldata,
 
   /* TODO Reduce to number of slices intersecting. */
   /* TODO Preemptive culling. */
-  DRW_shgroup_call_procedural_triangles(grp, sldata->common_data.vol_tex_size[2], NULL);
+  DRW_shgroup_call_procedural_triangles(grp, sldata->common_data.vol_tex_size[2], ob->obmat);
 
   vedata->stl->effects->enabled_effects |= (EFFECT_VOLUMETRIC | EFFECT_POST_BUFFER);
 }
diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl
index 0164a04c64b..052fdbb43a2 100644
--- a/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl
@@ -5,7 +5,6 @@
 #define NODETREE_EXEC
 
 #ifdef MESH_SHADER
-uniform mat4 volumeObjectMatrix;
 uniform vec3 volumeOrcoLoc;
 uniform vec3 volumeOrcoSize;
 #endif
@@ -33,9 +32,9 @@ void main()
   vec3 ndc_cell = volume_to_ndc((vec3(volume_cell) + volJitter.xyz) * volInvTexSize.xyz);
 
   viewPosition = get_view_space_from_depth(ndc_cell.xy, ndc_cell.z);
-  worldPosition = transform_point(ViewMatrixInverse, viewPosition);
+  worldPosition = point_view_to_world(viewPosition);
 #ifdef MESH_SHADER
-  volumeObjectLocalCoord = transform_point(volumeObjectMatrix, worldPosition);
+  volumeObjectLocalCoord = point_world_to_object(worldPosition);
   volumeObjectLocalCoord = (volumeObjectLocalCoord - volumeOrcoLoc + volumeOrcoSize) /
                            (volumeOrcoSize * 2.0);
 
diff --git a/source/blender/draw/intern/DRW_render.h b/source/blender/draw/intern/DRW_render.h
index 8d4d66e5853..cf7e9521053 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -406,6 +406,7 @@ void DRW_shgroup_call_object_ex(DRWShadingGroup *shgroup,
 #define DRW_shgroup_call_object_no_cull(shgroup, geom, ob) \
   DRW_shgroup_call_object_ex(shgroup, geom, ob, true)
 
+/* TODO(fclem) remove this when we have DRWView */
 void DRW_shgroup_call_object_with_callback(DRWShadingGroup *shgroup,
                                            struct GPUBatch *geom,
                                            struct Object *ob,
diff --git a/source/blender/draw/intern/draw_manager_data.c b/source/blender/draw/intern/draw_manager_data.c
index e47433e60ab..f8ef1bcf065 100644
--- a/source/blender/draw/intern/draw_manager_data.c
+++ b/source/blender/draw/intern/draw_manager_data.c
@@ -351,7 +351,7 @@ static void drw_call_state_update_matflag(DRWCallState *state,
                                           DRWShadingGroup *shgroup,
                                           Object *ob)
 {
-  uint16_t new_flags = ((state->matflag ^ shgroup->matflag) & shgroup->matflag);
+  uchar new_flags = ((state->matflag ^ shgroup->matflag) & shgroup->matflag);
 
   /* HACK: Here we set the matflags bit to 1 when computing the value
    * so that it's not recomputed for other drawcalls.
@@ -393,8 +393,6 @@ static DRWCallState *drw_call_state_create(DRWShadingGroup *shgroup, float (*obm
   state->visibility_cb = NULL;
   state->matflag = 0;
 
-  drw_call_state_update_matflag(state, shgroup, ob);
-
   /* Matrices */
   if (obmat != NULL) {
     copy_m4_m4(state->model, obmat);
@@ -407,6 +405,8 @@ static DRWCallState *drw_call_state_create(DRWShadingGroup *shgroup, float (*obm
     unit_m4(state->model);
   }
 
+  drw_call_state_update_matflag(state, shgroup, ob);
+
   if (ob != NULL) {
     float corner[3];
     BoundBox *bbox = BKE_object_boundbox_get(ob);