3D View: show selected object axis when affect origins is enabled

This replaces temporarily enabling draw-axis.

4 files changed, 58 insertions, 0 deletions

diff --git a/source/blender/draw/CMakeLists.txt b/source/blender/draw/CMakeLists.txt
index 1112a7a87db..19ab96868ef 100644
--- a/source/blender/draw/CMakeLists.txt
+++ b/source/blender/draw/CMakeLists.txt
@@ -307,6 +307,7 @@ data_to_c_simple(modes/shaders/overlay_face_wireframe_geom.glsl SRC)
 data_to_c_simple(modes/shaders/overlay_face_wireframe_frag.glsl SRC)
 data_to_c_simple(modes/shaders/object_camera_image_frag.glsl SRC)
 data_to_c_simple(modes/shaders/object_camera_image_vert.glsl SRC)
+data_to_c_simple(modes/shaders/object_color_axes_vert.glsl SRC)
 data_to_c_simple(modes/shaders/object_empty_axes_vert.glsl SRC)
 data_to_c_simple(modes/shaders/object_empty_image_frag.glsl SRC)
 data_to_c_simple(modes/shaders/object_empty_image_vert.glsl SRC)
diff --git a/source/blender/draw/intern/draw_common.c b/source/blender/draw/intern/draw_common.c
index ac3e7e4ce67..096e1c2aeca 100644
--- a/source/blender/draw/intern/draw_common.c
+++ b/source/blender/draw/intern/draw_common.c
@@ -243,6 +243,7 @@ extern char datatoc_gpu_shader_point_varying_color_frag_glsl[];
 
 extern char datatoc_object_mball_handles_vert_glsl[];
 extern char datatoc_object_empty_axes_vert_glsl[];
+extern char datatoc_object_color_axes_vert_glsl[];
 
 typedef struct COMMON_Shaders {
   struct GPUShader *shape_outline;
@@ -262,6 +263,7 @@ typedef struct COMMON_Shaders {
   struct GPUShader *volume_velocity_needle_sh;
   struct GPUShader *volume_velocity_sh;
   struct GPUShader *empty_axes_sh;
+  struct GPUShader *color_axes_sh;
 
   struct GPUShader *mball_handles;
 } COMMON_Shaders;
@@ -549,6 +551,37 @@ struct DRWCallBuffer *buffer_instance_empty_axes(DRWPass *pass,
   return DRW_shgroup_call_buffer_instance(grp, g_formats.instance_sized, geom);
 }
 
+struct DRWCallBuffer *buffer_instance_color_axes(DRWPass *pass,
+                                                 struct GPUBatch *geom,
+                                                 DRWShadingGroup **r_grp,
+                                                 eGPUShaderConfig sh_cfg)
+{
+  COMMON_Shaders *sh_data = &g_shaders[sh_cfg];
+  if (sh_data->color_axes_sh == NULL) {
+    const GPUShaderConfigData *sh_cfg_data = &GPU_shader_cfg_data[sh_cfg];
+    sh_data->color_axes_sh = GPU_shader_create_from_arrays({
+        .vert = (const char *[]){sh_cfg_data->lib, datatoc_object_color_axes_vert_glsl, NULL},
+        .frag = (const char *[]){datatoc_gpu_shader_flat_color_frag_glsl, NULL},
+        .defs = (const char *[]){sh_cfg_data->def, NULL},
+    });
+  }
+
+  DRW_shgroup_instance_format(g_formats.instance_sized,
+                              {
+                                  {"color", DRW_ATTR_FLOAT, 3},
+                                  {"size", DRW_ATTR_FLOAT, 1},
+                                  {"InstanceModelMatrix", DRW_ATTR_FLOAT, 16},
+                              });
+
+  DRWShadingGroup *grp = DRW_shgroup_create(sh_data->color_axes_sh, pass);
+  DRW_shgroup_uniform_vec3(grp, "screenVecs[0]", DRW_viewport_screenvecs_get(), 2);
+  if (sh_cfg == GPU_SHADER_CFG_CLIPPED) {
+    DRW_shgroup_state_enable(grp, DRW_STATE_CLIP_PLANES);
+  }
+  *r_grp = grp;
+  return DRW_shgroup_call_buffer_instance(grp, g_formats.instance_sized, geom);
+}
+
 struct DRWCallBuffer *buffer_instance_outline(DRWPass *pass,
                                               struct GPUBatch *geom,
                                               const int *baseid,
diff --git a/source/blender/draw/intern/draw_common.h b/source/blender/draw/intern/draw_common.h
index 8e6b8895dd3..9899b6c0194 100644
--- a/source/blender/draw/intern/draw_common.h
+++ b/source/blender/draw/intern/draw_common.h
@@ -160,6 +160,10 @@ struct DRWCallBuffer *buffer_instance_screen_aligned(struct DRWPass *pass,
 struct DRWCallBuffer *buffer_instance_empty_axes(struct DRWPass *pass,
                                                  struct GPUBatch *geom,
                                                  eGPUShaderConfig sh_cfg);
+struct DRWCallBuffer *buffer_instance_color_axes(struct DRWPass *pass,
+                                                 struct GPUBatch *geom,
+                                                 struct DRWShadingGroup **r_grp,
+                                                 eGPUShaderConfig sh_cfg);
 struct DRWCallBuffer *buffer_instance_scaled(struct DRWPass *pass,
                                              struct GPUBatch *geom,
                                              eGPUShaderConfig sh_cfg);
diff --git a/source/blender/draw/modes/object_mode.c b/source/blender/draw/modes/object_mode.c
index 54e915dbe64..716372560db 100644
--- a/source/blender/draw/modes/object_mode.c
+++ b/source/blender/draw/modes/object_mode.c
@@ -234,6 +234,7 @@ typedef struct OBJECT_ShadingGroupList {
   /* Helpers */
   DRWCallBuffer *relationship_lines;
   DRWCallBuffer *constraint_lines;
+  DRWCallBuffer *origin_xform;
 
   /* Camera */
   DRWCallBuffer *camera;
@@ -1735,6 +1736,16 @@ static void OBJECT_cache_init(void *vedata)
     sgl->constraint_lines = buffer_dynlines_dashed_uniform_color(
         sgl->non_meshes, gb->colorGridAxisZ, draw_ctx->sh_cfg);
 
+    {
+      DRWShadingGroup *grp_axes;
+      sgl->origin_xform = buffer_instance_color_axes(
+          sgl->non_meshes, DRW_cache_bone_arrows_get(), &grp_axes, draw_ctx->sh_cfg);
+
+      DRW_shgroup_state_disable(grp_axes, DRW_STATE_DEPTH_LESS_EQUAL);
+      DRW_shgroup_state_enable(grp_axes, DRW_STATE_DEPTH_ALWAYS);
+      DRW_shgroup_state_enable(grp_axes, DRW_STATE_WIRE_SMOOTH);
+    }
+
     /* Force Field Curve Guide End (here because of stipple) */
     /* TODO port to shader stipple */
     geom = DRW_cache_screenspace_circle_get();
@@ -3675,6 +3686,15 @@ static void OBJECT_cache_populate(void *vedata, Object *ob)
     DRW_shgroup_bounds(sgl, ob, theme_id);
   }
 
+  /* Helpers for when we're transforming origins. */
+  if (scene->toolsettings->transform_flag & SCE_XFORM_DATA_ORIGIN) {
+    if (ob->base_flag & BASE_SELECTED) {
+      const float color[4] = {0.75, 0.75, 0.75, 0.5};
+      float axes_size = 1.0f;
+      DRW_buffer_add_entry(sgl->origin_xform, color, &axes_size, ob->obmat);
+    }
+  }
+
   /* don't show object extras in set's */
   if ((ob->base_flag & (BASE_FROM_SET | BASE_FROM_DUPLI)) == 0) {
     if ((draw_ctx->object_mode & (OB_MODE_ALL_PAINT | OB_MODE_ALL_PAINT_GPENCIL)) == 0) {