work in progress, resource previews

4 files changed, 859 insertions, 1 deletions

diff --git a/tools/editor/plugins/editor_preview_plugins.cpp b/tools/editor/plugins/editor_preview_plugins.cpp
new file mode 100644
index 0000000000..64814cce6a
--- /dev/null
+++ b/tools/editor/plugins/editor_preview_plugins.cpp
@@ -0,0 +1,664 @@
+#include "editor_preview_plugins.h"
+#include "io/resource_loader.h"
+#include "tools/editor/editor_settings.h"
+#include "io/file_access_memory.h"
+#include "os/os.h"
+#include "scene/resources/material.h"
+#include "scene/resources/sample.h"
+
+bool EditorTexturePreviewPlugin::handles(const String& p_type) const {
+
+	return ObjectTypeDB::is_type(p_type,"ImageTexture");
+}
+
+Ref<Texture> EditorTexturePreviewPlugin::generate(const RES& p_from) {
+
+	Ref<ImageTexture> tex =p_from;
+	Image img = tex->get_data();
+	if (img.empty())
+		return Ref<Texture>();
+
+	img.clear_mipmaps();
+
+	int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
+	if (img.is_compressed()) {
+		if (img.decompress()!=OK)
+			return Ref<Texture>();
+	} else if (img.get_format()!=Image::FORMAT_RGB && img.get_format()!=Image::FORMAT_RGB) {
+		img.convert(Image::FORMAT_RGBA);
+	}
+
+	int width,height;
+	if (img.get_width() > thumbnail_size && img.get_width() >= img.get_height()) {
+
+		width=thumbnail_size;
+		height = img.get_height() * thumbnail_size / img.get_width();
+	} else if (img.get_height() > thumbnail_size &&  img.get_height() >= img.get_width()) {
+
+		height=thumbnail_size;
+		width = img.get_width() * thumbnail_size / img.get_height();
+	}  else {
+
+		width=img.get_width();
+		height=img.get_height();
+	}
+
+	img.resize(width,height);
+
+	Ref<ImageTexture> ptex = Ref<ImageTexture>( memnew( ImageTexture ));
+
+	ptex->create_from_image(img,0);
+	return ptex;
+
+}
+
+EditorTexturePreviewPlugin::EditorTexturePreviewPlugin() {
+
+
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+
+Ref<Texture> EditorPackedScenePreviewPlugin::_gen_from_imd(Ref<ResourceImportMetadata> p_imd) {
+
+	if (p_imd.is_null())
+		return Ref<Texture>();
+
+	if (!p_imd->has_option("thumbnail"))
+		return Ref<Texture>();
+
+	Variant tn = p_imd->get_option("thumbnail");
+	print_line(Variant::get_type_name(tn.get_type()));
+	DVector<uint8_t> thumbnail = tn;
+
+	int len = thumbnail.size();
+	if (len==0)
+		return Ref<Texture>();
+
+
+	DVector<uint8_t>::Read r = thumbnail.read();
+
+	Image img(r.ptr(),len);
+	if (img.empty())
+		return Ref<Texture>();
+
+	Ref<ImageTexture> ptex = Ref<ImageTexture>( memnew( ImageTexture ));
+	ptex->create_from_image(img,0);
+	return ptex;
+
+}
+
+bool EditorPackedScenePreviewPlugin::handles(const String& p_type) const {
+
+	return ObjectTypeDB::is_type(p_type,"PackedScene");
+}
+Ref<Texture> EditorPackedScenePreviewPlugin::generate(const RES& p_from) {
+
+	Ref<ResourceImportMetadata> imd = p_from->get_import_metadata();
+	return _gen_from_imd(imd);
+}
+
+Ref<Texture> EditorPackedScenePreviewPlugin::generate_from_path(const String& p_path) {
+
+	Ref<ResourceImportMetadata> imd = ResourceLoader::load_import_metadata(p_path);
+	return _gen_from_imd(imd);
+}
+
+EditorPackedScenePreviewPlugin::EditorPackedScenePreviewPlugin() {
+
+}
+
+//////////////////////////////////////////////////////////////////
+
+bool EditorMaterialPreviewPlugin::handles(const String& p_type) const {
+
+	return ObjectTypeDB::is_type(p_type,"Material"); //any material
+}
+
+Ref<Texture> EditorMaterialPreviewPlugin::generate(const RES& p_from) {
+
+	Ref<Material> material = p_from;
+	ERR_FAIL_COND_V(material.is_null(),Ref<Texture>());
+
+	VS::get_singleton()->mesh_surface_set_material(sphere,0,material->get_rid());
+
+	VS::get_singleton()->viewport_queue_screen_capture(viewport);
+	VS::get_singleton()->viewport_set_render_target_update_mode(viewport,VS::RENDER_TARGET_UPDATE_ONCE); //once used for capture
+//	print_line("queue capture!");
+	Image img;
+
+	int timeout=1000;
+	while(timeout) {
+		//print_line("try capture?");
+		OS::get_singleton()->delay_usec(10);
+		img = VS::get_singleton()->viewport_get_screen_capture(viewport);
+		if (!img.empty())
+			break;
+		timeout--;
+	}
+
+	//print_line("captured!");
+	VS::get_singleton()->mesh_surface_set_material(sphere,0,RID());
+
+	int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
+	img.resize(thumbnail_size,thumbnail_size);
+
+	Ref<ImageTexture> ptex = Ref<ImageTexture>( memnew( ImageTexture ));
+	ptex->create_from_image(img,0);
+	return ptex;
+}
+
+EditorMaterialPreviewPlugin::EditorMaterialPreviewPlugin() {
+
+	scenario = VS::get_singleton()->scenario_create();
+
+	viewport = VS::get_singleton()->viewport_create();
+	VS::get_singleton()->viewport_set_as_render_target(viewport,true);
+	VS::get_singleton()->viewport_set_render_target_update_mode(viewport,VS::RENDER_TARGET_UPDATE_DISABLED);
+	VS::get_singleton()->viewport_set_scenario(viewport,scenario);
+	VS::ViewportRect vr;
+	vr.x=0;
+	vr.y=0;
+	vr.width=128;
+	vr.height=128;
+	VS::get_singleton()->viewport_set_rect(viewport,vr);
+
+	camera = VS::get_singleton()->camera_create();
+	VS::get_singleton()->viewport_attach_camera(viewport,camera);
+	VS::get_singleton()->camera_set_transform(camera,Transform(Matrix3(),Vector3(0,0,3)));
+	VS::get_singleton()->camera_set_perspective(camera,45,0.1,10);
+
+	light = VS::get_singleton()->light_create(VS::LIGHT_DIRECTIONAL);
+	light_instance = VS::get_singleton()->instance_create2(light,scenario);
+	VS::get_singleton()->instance_set_transform(light_instance,Transform().looking_at(Vector3(-1,-1,-1),Vector3(0,1,0)));
+
+	light2 = VS::get_singleton()->light_create(VS::LIGHT_DIRECTIONAL);
+	VS::get_singleton()->light_set_color(light2,VS::LIGHT_COLOR_DIFFUSE,Color(0.7,0.7,0.7));
+	VS::get_singleton()->light_set_color(light2,VS::LIGHT_COLOR_SPECULAR,Color(0.0,0.0,0.0));
+	light_instance2 = VS::get_singleton()->instance_create2(light2,scenario);
+
+	VS::get_singleton()->instance_set_transform(light_instance2,Transform().looking_at(Vector3(0,1,0),Vector3(0,0,1)));
+
+	sphere = VS::get_singleton()->mesh_create();
+	sphere_instance = VS::get_singleton()->instance_create2(sphere,scenario);
+
+	int lats=32;
+	int lons=32;
+	float radius=1.0;
+
+	DVector<Vector3> vertices;
+	DVector<Vector3> normals;
+	DVector<Vector2> uvs;
+	DVector<float> tangents;
+	Matrix3 tt = Matrix3(Vector3(0,1,0),Math_PI*0.5);
+
+	for(int i = 1; i <= lats; i++) {
+		double lat0 = Math_PI * (-0.5 + (double) (i - 1) / lats);
+		double z0  = Math::sin(lat0);
+		double zr0 =  Math::cos(lat0);
+
+		double lat1 = Math_PI * (-0.5 + (double) i / lats);
+		double z1 = Math::sin(lat1);
+		double zr1 = Math::cos(lat1);
+
+		for(int j = lons; j >= 1; j--) {
+
+			double lng0 = 2 * Math_PI * (double) (j - 1) / lons;
+			double x0 = Math::cos(lng0);
+			double y0 = Math::sin(lng0);
+
+			double lng1 = 2 * Math_PI * (double) (j) / lons;
+			double x1 = Math::cos(lng1);
+			double y1 = Math::sin(lng1);
+
+
+			Vector3 v[4]={
+				Vector3(x1 * zr0, z0, y1 *zr0),
+				Vector3(x1 * zr1, z1, y1 *zr1),
+				Vector3(x0 * zr1, z1, y0 *zr1),
+				Vector3(x0 * zr0, z0, y0 *zr0)
+			};
+
+#define ADD_POINT(m_idx) \
+	normals.push_back(v[m_idx]);\
+	vertices.push_back(v[m_idx]*radius);\
+	{ Vector2 uv(Math::atan2(v[m_idx].x,v[m_idx].z),Math::atan2(-v[m_idx].y,v[m_idx].z));\
+	  uv/=Math_PI;\
+	  uv*=4.0;\
+	  uv=uv*0.5+Vector2(0.5,0.5);\
+	  uvs.push_back(uv);\
+	 }\
+	 { Vector3 t = tt.xform(v[m_idx]);\
+	   tangents.push_back(t.x);\
+	   tangents.push_back(t.y);\
+	   tangents.push_back(t.z);\
+	   tangents.push_back(1.0);\
+	  }
+
+
+
+			ADD_POINT(0);
+			ADD_POINT(1);
+			ADD_POINT(2);
+
+			ADD_POINT(2);
+			ADD_POINT(3);
+			ADD_POINT(0);
+		}
+	}
+
+	Array arr;
+	arr.resize(VS::ARRAY_MAX);
+	arr[VS::ARRAY_VERTEX]=vertices;
+	arr[VS::ARRAY_NORMAL]=normals;
+	arr[VS::ARRAY_TANGENT]=tangents;
+	arr[VS::ARRAY_TEX_UV]=uvs;
+	VS::get_singleton()->mesh_add_surface(sphere,VS::PRIMITIVE_TRIANGLES,arr);
+
+}
+
+EditorMaterialPreviewPlugin::~EditorMaterialPreviewPlugin() {
+
+	VS::get_singleton()->free(sphere);
+	VS::get_singleton()->free(sphere_instance);
+	VS::get_singleton()->free(viewport);
+	VS::get_singleton()->free(light);
+	VS::get_singleton()->free(light_instance);
+	VS::get_singleton()->free(light2);
+	VS::get_singleton()->free(light_instance2);
+	VS::get_singleton()->free(camera);
+	VS::get_singleton()->free(scenario);
+
+}
+
+///////////////////////////////////////////////////////////////////////////
+
+static bool _is_text_char(CharType c) {
+
+	return (c>='a' && c<='z') || (c>='A' && c<='Z') || (c>='0' && c<='9') || c=='_';
+}
+
+bool EditorScriptPreviewPlugin::handles(const String& p_type) const {
+
+	return ObjectTypeDB::is_type(p_type,"Script");
+}
+
+Ref<Texture> EditorScriptPreviewPlugin::generate(const RES& p_from) {
+
+
+	Ref<Script> scr = p_from;
+	if (scr.is_null())
+		return Ref<Texture>();
+
+	String code = scr->get_source_code().strip_edges();
+	if (code=="")
+		return Ref<Texture>();
+
+	List<String> kwors;
+	scr->get_language()->get_reserved_words(&kwors);
+
+	Set<String> keywords;
+
+	for(List<String>::Element *E=kwors.front();E;E=E->next()) {
+
+		keywords.insert(E->get());
+
+	}
+
+
+	int line = 0;
+	int col=0;
+	int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
+	Image img(thumbnail_size,thumbnail_size,0,Image::FORMAT_RGBA);
+
+
+
+	Color bg_color = EditorSettings::get_singleton()->get("text_editor/background_color");
+	bg_color.a=1.0;
+	Color keyword_color = EditorSettings::get_singleton()->get("text_editor/keyword_color");
+	Color text_color = EditorSettings::get_singleton()->get("text_editor/text_color");
+	Color symbol_color = EditorSettings::get_singleton()->get("text_editor/symbol_color");
+	Color comment_color = EditorSettings::get_singleton()->get("text_editor/comment_color");
+
+
+	for(int i=0;i<thumbnail_size;i++) {
+		for(int j=0;j<thumbnail_size;j++) {
+			img.put_pixel(i,j,bg_color);
+		}
+
+	}
+
+	bool prev_is_text=false;
+	bool in_keyword=false;
+	for(int i=0;i<code.length();i++) {
+
+		CharType c = code[i];
+		if (c>32) {
+			if (col<thumbnail_size) {
+				Color color = text_color;
+
+				if (c!='_' && ((c>='!' && c<='/') || (c>=':' && c<='@') || (c>='[' && c<='`') || (c>='{' && c<='~') || c=='\t')) {
+					//make symbol a little visible
+					color=symbol_color;
+					in_keyword=false;
+				} else if (!prev_is_text && _is_text_char(c)) {
+					int pos = i;
+
+					while(_is_text_char(code[pos])) {
+						pos++;
+					}
+					///print_line("from "+itos(i)+" to "+itos(pos));
+					String word = code.substr(i,pos-i);
+					//print_line("found word: "+word);
+					if (keywords.has(word))
+						in_keyword=true;
+
+				} else if (!_is_text_char(c)) {
+					in_keyword=false;
+				}
+
+				if (in_keyword)
+					color=keyword_color;
+
+				Color ul=color;
+				ul.a*=0.5;
+				img.put_pixel(col,line*2,bg_color.blend(ul));
+				img.put_pixel(col,line*2+1,color);
+
+				prev_is_text=_is_text_char(c);
+			}
+		} else {
+
+			prev_is_text=false;
+			in_keyword=false;
+
+			if (c=='\n') {
+				col=0;
+				line++;
+				if (line>=thumbnail_size/2)
+					break;
+			} else if (c=='\t') {
+				col+=3;
+			}
+		}
+		col++;
+	}
+
+	Ref<ImageTexture> ptex = Ref<ImageTexture>( memnew( ImageTexture));
+
+	ptex->create_from_image(img,0);
+	return ptex;
+
+}
+
+EditorScriptPreviewPlugin::EditorScriptPreviewPlugin() {
+
+
+}
+///////////////////////////////////////////////////////////////////
+
+bool EditorSamplePreviewPlugin::handles(const String& p_type) const {
+
+	return ObjectTypeDB::is_type(p_type,"Sample");
+}
+
+Ref<Texture> EditorSamplePreviewPlugin::generate(const RES& p_from) {
+
+	Ref<Sample> smp =p_from;
+	ERR_FAIL_COND_V(smp.is_null(),Ref<Texture>());
+
+
+	int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
+
+	DVector<uint8_t> img;
+	int w = thumbnail_size;
+	int h = thumbnail_size;
+	img.resize(w*h*3);
+
+	DVector<uint8_t>::Write imgdata = img.write();
+	uint8_t * imgw = imgdata.ptr();
+	DVector<uint8_t> data = smp->get_data();
+	DVector<uint8_t>::Read sampledata = data.read();
+	const uint8_t *sdata=sampledata.ptr();
+
+	bool stereo = smp->is_stereo();
+	bool _16=smp->get_format()==Sample::FORMAT_PCM16;
+	int len = smp->get_length();
+
+	if (len<1)
+		return Ref<Texture>();
+
+	if (smp->get_format()==Sample::FORMAT_IMA_ADPCM) {
+
+		struct IMA_ADPCM_State {
+
+			int16_t step_index;
+			int32_t predictor;
+			/* values at loop point */
+			int16_t loop_step_index;
+			int32_t loop_predictor;
+			int32_t last_nibble;
+			int32_t loop_pos;
+			int32_t window_ofs;
+			const uint8_t *ptr;
+		} ima_adpcm;
+
+		ima_adpcm.step_index=0;
+		ima_adpcm.predictor=0;
+		ima_adpcm.loop_step_index=0;
+		ima_adpcm.loop_predictor=0;
+		ima_adpcm.last_nibble=-1;
+		ima_adpcm.loop_pos=0x7FFFFFFF;
+		ima_adpcm.window_ofs=0;
+		ima_adpcm.ptr=NULL;
+
+
+		for(int i=0;i<w;i++) {
+
+			float max[2]={-1e10,-1e10};
+			float min[2]={1e10,1e10};
+			int from = i*len/w;
+			int to = (i+1)*len/w;
+			if (to>=len)
+				to=len-1;
+
+			for(int j=from;j<to;j++) {
+
+				while(j>ima_adpcm.last_nibble) {
+
+					static const int16_t _ima_adpcm_step_table[89] = {
+						7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+						19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+						50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+						130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+						337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+						876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+						2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+						5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+						15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+					};
+
+					static const int8_t _ima_adpcm_index_table[16] = {
+						-1, -1, -1, -1, 2, 4, 6, 8,
+						-1, -1, -1, -1, 2, 4, 6, 8
+					};
+
+					int16_t nibble,signed_nibble,diff,step;
+
+					ima_adpcm.last_nibble++;
+					const uint8_t *src_ptr=sdata;
+
+					nibble = (ima_adpcm.last_nibble&1)?
+							(src_ptr[ima_adpcm.last_nibble>>1]>>4):(src_ptr[ima_adpcm.last_nibble>>1]&0xF);
+					step=_ima_adpcm_step_table[ima_adpcm.step_index];
+
+					ima_adpcm.step_index += _ima_adpcm_index_table[nibble];
+					if (ima_adpcm.step_index<0)
+						ima_adpcm.step_index=0;
+					if (ima_adpcm.step_index>88)
+						ima_adpcm.step_index=88;
+
+					/*
+					signed_nibble = (nibble&7) * ((nibble&8)?-1:1);
+					diff = (2 * signed_nibble + 1) * step / 4; */
+
+					diff = step >> 3 ;
+					if (nibble & 1)
+						diff += step >> 2 ;
+					if (nibble & 2)
+						diff += step >> 1 ;
+					if (nibble & 4)
+						diff += step ;
+					if (nibble & 8)
+						diff = -diff ;
+
+					ima_adpcm.predictor+=diff;
+					if (ima_adpcm.predictor<-0x8000)
+						ima_adpcm.predictor=-0x8000;
+					else if (ima_adpcm.predictor>0x7FFF)
+						ima_adpcm.predictor=0x7FFF;
+
+
+					/* store loop if there */
+					if (ima_adpcm.last_nibble==ima_adpcm.loop_pos) {
+
+						ima_adpcm.loop_step_index = ima_adpcm.step_index;
+						ima_adpcm.loop_predictor = ima_adpcm.predictor;
+					}
+
+				}
+
+				float v=ima_adpcm.predictor/32767.0;
+				if (v>max[0])
+					max[0]=v;
+				if (v<min[0])
+					min[0]=v;
+			}
+			max[0]*=0.8;
+			min[0]*=0.8;
+
+			for(int j=0;j<h;j++) {
+				float v = (j/(float)h) * 2.0 - 1.0;
+				uint8_t* imgofs = &imgw[(j*w+i)*3];
+				if (v>min[0] && v<max[0]) {
+					imgofs[0]=255;
+					imgofs[1]=150;
+					imgofs[2]=80;
+				} else {
+					imgofs[0]=0;
+					imgofs[1]=0;
+					imgofs[2]=0;
+				}
+			}
+		}
+	} else {
+		for(int i=0;i<w;i++) {
+			// i trust gcc will optimize this loop
+			float max[2]={-1e10,-1e10};
+			float min[2]={1e10,1e10};
+			int c=stereo?2:1;
+			int from = i*len/w;
+			int to = (i+1)*len/w;
+			if (to>=len)
+				to=len-1;
+
+			if (_16) {
+				const int16_t*src =(const int16_t*)sdata;
+
+				for(int j=0;j<c;j++) {
+
+					for(int k=from;k<=to;k++) {
+
+						float v = src[k*c+j]/32768.0;
+						if (v>max[j])
+							max[j]=v;
+						if (v<min[j])
+							min[j]=v;
+					}
+
+				}
+			} else {
+
+				const int8_t*src =(const int8_t*)sdata;
+
+				for(int j=0;j<c;j++) {
+
+					for(int k=from;k<=to;k++) {
+
+						float v = src[k*c+j]/128.0;
+						if (v>max[j])
+							max[j]=v;
+						if (v<min[j])
+							min[j]=v;
+					}
+
+				}
+			}
+
+			max[0]*=0.8;
+			max[1]*=0.8;
+			min[0]*=0.8;
+			min[1]*=0.8;
+
+			if (!stereo) {
+				for(int j=0;j<h;j++) {
+					float v = (j/(float)h) * 2.0 - 1.0;
+					uint8_t* imgofs = &imgw[(j*w+i)*3];
+					if (v>min[0] && v<max[0]) {
+						imgofs[0]=255;
+						imgofs[1]=150;
+						imgofs[2]=80;
+					} else {
+						imgofs[0]=0;
+						imgofs[1]=0;
+						imgofs[2]=0;
+					}
+				}
+			} else {
+
+				for(int j=0;j<h;j++) {
+
+					int half,ofs;
+					float v;
+					if (j<(h/2)) {
+						half=0;
+						ofs=0;
+						v = (j/(float)(h/2)) * 2.0 - 1.0;
+					} else {
+						half=1;
+						ofs=h/2;
+						v = ((j-(h/2))/(float)(h/2)) * 2.0 - 1.0;
+					}
+
+					uint8_t* imgofs = &imgw[(j*w+i)*3];
+					if (v>min[half] && v<max[half]) {
+						imgofs[0]=255;
+						imgofs[1]=150;
+						imgofs[2]=80;
+					} else {
+						imgofs[0]=0;
+						imgofs[1]=0;
+						imgofs[2]=0;
+					}
+				}
+
+			}
+
+		}
+	}
+
+	imgdata = DVector<uint8_t>::Write();
+
+	Ref<ImageTexture> ptex = Ref<ImageTexture>( memnew( ImageTexture));
+	ptex->create_from_image(Image(w,h,0,Image::FORMAT_RGB,img),0);
+	return ptex;
+
+}
+
+EditorSamplePreviewPlugin::EditorSamplePreviewPlugin() {
+
+
+}
+
+///////////////////////////////////////////////////////////////////////////
diff --git a/tools/editor/plugins/editor_preview_plugins.h b/tools/editor/plugins/editor_preview_plugins.h
new file mode 100644
index 0000000000..fc42ebfc0e
--- /dev/null
+++ b/tools/editor/plugins/editor_preview_plugins.h
@@ -0,0 +1,69 @@
+#ifndef EDITORPREVIEWPLUGINS_H
+#define EDITORPREVIEWPLUGINS_H
+
+#include "tools/editor/editor_resource_preview.h"
+
+class EditorTexturePreviewPlugin : public EditorResourcePreviewGenerator {
+public:
+
+	virtual bool handles(const String& p_type) const;
+	virtual Ref<Texture> generate(const RES& p_from);
+
+	EditorTexturePreviewPlugin();
+};
+
+
+class EditorPackedScenePreviewPlugin : public EditorResourcePreviewGenerator {
+
+	Ref<Texture> _gen_from_imd(Ref<ResourceImportMetadata> p_imd);
+public:
+
+	virtual bool handles(const String& p_type) const;
+	virtual Ref<Texture> generate(const RES& p_from);
+	virtual Ref<Texture> generate_from_path(const String& p_path);
+
+	EditorPackedScenePreviewPlugin();
+};
+
+class EditorMaterialPreviewPlugin : public EditorResourcePreviewGenerator {
+
+	RID scenario;
+	RID sphere;
+	RID sphere_instance;
+	RID viewport;
+	RID light;
+	RID light_instance;
+	RID light2;
+	RID light_instance2;
+	RID camera;
+public:
+
+	virtual bool handles(const String& p_type) const;
+	virtual Ref<Texture> generate(const RES& p_from);
+
+	EditorMaterialPreviewPlugin();
+	~EditorMaterialPreviewPlugin();
+};
+
+class EditorScriptPreviewPlugin : public EditorResourcePreviewGenerator {
+public:
+
+	virtual bool handles(const String& p_type) const;
+	virtual Ref<Texture> generate(const RES& p_from);
+
+	EditorScriptPreviewPlugin();
+};
+
+
+class EditorSamplePreviewPlugin : public EditorResourcePreviewGenerator {
+public:
+
+	virtual bool handles(const String& p_type) const;
+	virtual Ref<Texture> generate(const RES& p_from);
+
+	EditorSamplePreviewPlugin();
+};
+
+
+
+#endif // EDITORPREVIEWPLUGINS_H
diff --git a/tools/editor/plugins/sample_editor_plugin.cpp b/tools/editor/plugins/sample_editor_plugin.cpp
index 3219935688..31fa7246ae 100644
--- a/tools/editor/plugins/sample_editor_plugin.cpp
+++ b/tools/editor/plugins/sample_editor_plugin.cpp
@@ -98,6 +98,125 @@ void SampleEditor::generate_preview_texture(const Ref<Sample>& p_sample,Ref<Imag
 	if (p_sample->get_format()==Sample::FORMAT_IMA_ADPCM) {
 
 
+		struct IMA_ADPCM_State {
+
+			int16_t step_index;
+			int32_t predictor;
+			/* values at loop point */
+			int16_t loop_step_index;
+			int32_t loop_predictor;
+			int32_t last_nibble;
+			int32_t loop_pos;
+			int32_t window_ofs;
+			const uint8_t *ptr;
+		} ima_adpcm;
+
+		ima_adpcm.step_index=0;
+		ima_adpcm.predictor=0;
+		ima_adpcm.loop_step_index=0;
+		ima_adpcm.loop_predictor=0;
+		ima_adpcm.last_nibble=-1;
+		ima_adpcm.loop_pos=0x7FFFFFFF;
+		ima_adpcm.window_ofs=0;
+		ima_adpcm.ptr=NULL;
+
+
+		for(int i=0;i<w;i++) {
+
+			float max[2]={-1e10,-1e10};
+			float min[2]={1e10,1e10};
+			int from = i*len/w;
+			int to = (i+1)*len/w;
+			if (to>=len)
+				to=len-1;
+
+			for(int j=from;j<to;j++) {
+
+				while(j>ima_adpcm.last_nibble) {
+
+					static const int16_t _ima_adpcm_step_table[89] = {
+						7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
+						19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
+						50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
+						130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
+						337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
+						876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
+						2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
+						5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
+						15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
+					};
+
+					static const int8_t _ima_adpcm_index_table[16] = {
+						-1, -1, -1, -1, 2, 4, 6, 8,
+						-1, -1, -1, -1, 2, 4, 6, 8
+					};
+
+					int16_t nibble,signed_nibble,diff,step;
+
+					ima_adpcm.last_nibble++;
+					const uint8_t *src_ptr=sdata;
+
+					nibble = (ima_adpcm.last_nibble&1)?
+							(src_ptr[ima_adpcm.last_nibble>>1]>>4):(src_ptr[ima_adpcm.last_nibble>>1]&0xF);
+					step=_ima_adpcm_step_table[ima_adpcm.step_index];
+
+					ima_adpcm.step_index += _ima_adpcm_index_table[nibble];
+					if (ima_adpcm.step_index<0)
+						ima_adpcm.step_index=0;
+					if (ima_adpcm.step_index>88)
+						ima_adpcm.step_index=88;
+
+					/*
+					signed_nibble = (nibble&7) * ((nibble&8)?-1:1);
+					diff = (2 * signed_nibble + 1) * step / 4; */
+
+					diff = step >> 3 ;
+					if (nibble & 1)
+						diff += step >> 2 ;
+					if (nibble & 2)
+						diff += step >> 1 ;
+					if (nibble & 4)
+						diff += step ;
+					if (nibble & 8)
+						diff = -diff ;
+
+					ima_adpcm.predictor+=diff;
+					if (ima_adpcm.predictor<-0x8000)
+						ima_adpcm.predictor=-0x8000;
+					else if (ima_adpcm.predictor>0x7FFF)
+						ima_adpcm.predictor=0x7FFF;
+
+
+					/* store loop if there */
+					if (ima_adpcm.last_nibble==ima_adpcm.loop_pos) {
+
+						ima_adpcm.loop_step_index = ima_adpcm.step_index;
+						ima_adpcm.loop_predictor = ima_adpcm.predictor;
+					}
+
+				}
+
+				float v=ima_adpcm.predictor/32767.0;
+				if (v>max[0])
+					max[0]=v;
+				if (v<min[0])
+					min[0]=v;
+			}
+
+			for(int j=0;j<h;j++) {
+				float v = (j/(float)h) * 2.0 - 1.0;
+				uint8_t* imgofs = &imgw[(j*w+i)*3];
+				if (v>min[0] && v<max[0]) {
+					imgofs[0]=255;
+					imgofs[1]=150;
+					imgofs[2]=80;
+				} else {
+					imgofs[0]=0;
+					imgofs[1]=0;
+					imgofs[2]=0;
+				}
+			}
+		}
 	} else {
 		for(int i=0;i<w;i++) {
 			// i trust gcc will optimize this loop
diff --git a/tools/editor/plugins/spatial_editor_plugin.h b/tools/editor/plugins/spatial_editor_plugin.h
index b890f285ee..ff8912fca8 100644
--- a/tools/editor/plugins/spatial_editor_plugin.h
+++ b/tools/editor/plugins/spatial_editor_plugin.h
@@ -239,7 +239,7 @@ public:
 	void set_state(const Dictionary& p_state);
 	Dictionary get_state() const;
 	void reset();
-
+	Viewport *get_viewport_node() { return viewport; }
 
 
 	SpatialEditorViewport(SpatialEditor *p_spatial_editor,EditorNode *p_editor,int p_index);
@@ -422,6 +422,7 @@ private:
 	HBoxContainer *hbc_menu;
 
 
+
 //
 //
 	void _generate_selection_box();
@@ -514,6 +515,11 @@ public:
 
 	void set_can_preview(Camera* p_preview);
 
+	SpatialEditorViewport *get_editor_viewport(int p_idx) {
+		ERR_FAIL_INDEX_V(p_idx,4,NULL);
+		return viewports[p_idx];
+	}
+
 	Camera *get_camera() { return NULL; }
 	void edit(Spatial *p_spatial);
 	void clear();