Workbench: SeeThrough draw option

Option to see through all meshes (transparency)

Works for OB_SOLID and OB_TEXTURED. Does not work for
V3D_SHADING_SHADOW.

TODO: Fresnel effect

1 files changed, 49 insertions, 0 deletions

diff --git a/source/blender/draw/engines/workbench/workbench_data.c b/source/blender/draw/engines/workbench/workbench_data.c
new file mode 100644
index 00000000000..c3671fa37b1
--- /dev/null
+++ b/source/blender/draw/engines/workbench/workbench_data.c
@@ -0,0 +1,49 @@
+#include "workbench_private.h"
+
+#include "UI_resources.h"
+
+void workbench_private_data_init(WORKBENCH_PrivateData *wpd)
+{
+	const DRWContextState *draw_ctx = DRW_context_state_get();
+	wpd->material_hash = BLI_ghash_ptr_new(__func__);
+
+	View3D *v3d = draw_ctx->v3d;
+	if (v3d) {
+		wpd->shading = v3d->shading;
+		wpd->drawtype = v3d->drawtype;
+		wpd->studio_light = BKE_studiolight_find(wpd->shading.studio_light);
+	}
+	else {
+		memset(&wpd->shading, 0, sizeof(wpd->shading));
+		wpd->shading.light = V3D_LIGHTING_STUDIO;
+		wpd->shading.shadow_intensity = 0.5;
+		copy_v3_fl(wpd->shading.single_color, 0.8f);
+		wpd->drawtype = OB_SOLID;
+		wpd->studio_light = BKE_studiolight_findindex(0);
+		wpd->shading.see_through_transparency = 0.3f;
+	}
+	wpd->shadow_multiplier = 1.0 - wpd->shading.shadow_intensity;
+
+	WORKBENCH_UBO_World *wd = &wpd->world_data;
+	UI_GetThemeColor3fv(UI_GetThemeValue(TH_SHOW_BACK_GRAD) ? TH_LOW_GRAD : TH_HIGH_GRAD, wd->background_color_low);
+	UI_GetThemeColor3fv(TH_HIGH_GRAD, wd->background_color_high);
+
+	/* XXX: Really quick conversion to avoid washed out background.
+	 * Needs to be adressed properly (color managed using ocio). */
+	srgb_to_linearrgb_v3_v3(wd->background_color_high, wd->background_color_high);
+	srgb_to_linearrgb_v3_v3(wd->background_color_low, wd->background_color_low);
+
+	studiolight_update_world(wpd->studio_light, wd);
+
+	wd->see_through_transparency = wpd->shading.see_through_transparency;
+	copy_v3_v3(wd->object_outline_color, wpd->shading.object_outline_color);
+	wd->object_outline_color[3] = 1.0f;
+
+	wpd->world_ubo = DRW_uniformbuffer_create(sizeof(WORKBENCH_UBO_World), &wpd->world_data);
+}
+
+void workbench_private_data_free(WORKBENCH_PrivateData *wpd)
+{
+	BLI_ghash_free(wpd->material_hash, NULL, MEM_freeN);
+	DRW_UBO_FREE_SAFE(wpd->world_ubo);
+}