add 3D textures

6 files changed, 275 insertions, 68 deletions

diff --git a/drivers/gles3/rasterizer_gles3.cpp b/drivers/gles3/rasterizer_gles3.cpp
index 0053b6311f..cb17695c5f 100644
--- a/drivers/gles3/rasterizer_gles3.cpp
+++ b/drivers/gles3/rasterizer_gles3.cpp
@@ -290,7 +290,7 @@ void RasterizerGLES3::set_boot_image(const Ref<Image> &p_image, const Color &p_c
 	canvas->canvas_begin();
 
 	RID texture = storage->texture_create();
-	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), p_image->get_format(), VS::TEXTURE_FLAG_FILTER);
+	storage->texture_allocate(texture, p_image->get_width(), p_image->get_height(), 0, p_image->get_format(), VS::TEXTURE_TYPE_2D, VS::TEXTURE_FLAG_FILTER);
 	storage->texture_set_data(texture, p_image);
 
 	Rect2 imgrect(0, 0, p_image->get_width(), p_image->get_height());
diff --git a/drivers/gles3/rasterizer_scene_gles3.cpp b/drivers/gles3/rasterizer_scene_gles3.cpp
index d01ba2ddcc..eebdbe9493 100644
--- a/drivers/gles3/rasterizer_scene_gles3.cpp
+++ b/drivers/gles3/rasterizer_scene_gles3.cpp
@@ -1190,6 +1190,7 @@ bool RasterizerSceneGLES3::_setup_material(RasterizerStorageGLES3::Material *p_m
 	int tc = p_material->textures.size();
 	RID *textures = p_material->textures.ptrw();
 	ShaderLanguage::ShaderNode::Uniform::Hint *texture_hints = p_material->shader->texture_hints.ptrw();
+	const ShaderLanguage::DataType *texture_types = p_material->shader->texture_types.ptr();
 
 	state.current_main_tex = 0;
 
@@ -1198,39 +1199,17 @@ bool RasterizerSceneGLES3::_setup_material(RasterizerStorageGLES3::Material *p_m
 		glActiveTexture(GL_TEXTURE0 + i);
 
 		GLenum target;
-		GLuint tex;
+		GLuint tex = 0;
 
-		RasterizerStorageGLES3::Texture *t = storage->texture_owner.getornull(textures[i]);
+		RasterizerStorageGLES3::Texture *t = storage->texture_owner.getptr(textures[i]);
 
-		if (!t) {
-			//check hints
-			target = GL_TEXTURE_2D;
-
-			switch (texture_hints[i]) {
-				case ShaderLanguage::ShaderNode::Uniform::HINT_BLACK_ALBEDO:
-				case ShaderLanguage::ShaderNode::Uniform::HINT_BLACK: {
-					tex = storage->resources.black_tex;
-				} break;
-				case ShaderLanguage::ShaderNode::Uniform::HINT_ANISO: {
-					tex = storage->resources.aniso_tex;
-				} break;
-				case ShaderLanguage::ShaderNode::Uniform::HINT_NORMAL: {
-					tex = storage->resources.normal_tex;
-
-				} break;
-				default: {
-					tex = storage->resources.white_tex;
-				} break;
-			}
-
-		} else {
+		if (t) {
 
 			if (t->redraw_if_visible) { //must check before proxy because this is often used with proxies
 				VisualServerRaster::redraw_request();
 			}
 
 			t = t->get_ptr(); //resolve for proxies
-
 #ifdef TOOLS_ENABLED
 			if (t->detect_3d) {
 				t->detect_3d(t->detect_3d_ud);
@@ -1247,6 +1226,59 @@ bool RasterizerSceneGLES3::_setup_material(RasterizerStorageGLES3::Material *p_m
 
 			target = t->target;
 			tex = t->tex_id;
+		} else {
+
+			switch (texture_types[i]) {
+				case ShaderLanguage::TYPE_ISAMPLER2D:
+				case ShaderLanguage::TYPE_USAMPLER2D:
+				case ShaderLanguage::TYPE_SAMPLER2D: {
+					target = GL_TEXTURE_2D;
+
+					switch (texture_hints[i]) {
+						case ShaderLanguage::ShaderNode::Uniform::HINT_BLACK_ALBEDO:
+						case ShaderLanguage::ShaderNode::Uniform::HINT_BLACK: {
+							tex = storage->resources.black_tex;
+						} break;
+						case ShaderLanguage::ShaderNode::Uniform::HINT_ANISO: {
+							tex = storage->resources.aniso_tex;
+						} break;
+						case ShaderLanguage::ShaderNode::Uniform::HINT_NORMAL: {
+							tex = storage->resources.normal_tex;
+
+						} break;
+						default: {
+							tex = storage->resources.white_tex;
+						} break;
+					}
+
+				} break;
+
+				case ShaderLanguage::TYPE_SAMPLERCUBE: {
+					// TODO
+				} break;
+
+				case ShaderLanguage::TYPE_ISAMPLER3D:
+				case ShaderLanguage::TYPE_USAMPLER3D:
+				case ShaderLanguage::TYPE_SAMPLER3D: {
+
+					target = GL_TEXTURE_3D;
+
+					switch (texture_hints[i]) {
+
+						// TODO
+						default: {
+							tex = storage->resources.white_tex_3d;
+						} break;
+					}
+
+				} break;
+
+				case ShaderLanguage::TYPE_ISAMPLER2DARRAY:
+				case ShaderLanguage::TYPE_USAMPLER2DARRAY:
+				case ShaderLanguage::TYPE_SAMPLER2DARRAY: {
+					// TODO
+				} break;
+			}
 		}
 
 		glBindTexture(target, tex);
diff --git a/drivers/gles3/rasterizer_storage_gles3.cpp b/drivers/gles3/rasterizer_storage_gles3.cpp
index c1c1b2a009..83792ca19f 100644
--- a/drivers/gles3/rasterizer_storage_gles3.cpp
+++ b/drivers/gles3/rasterizer_storage_gles3.cpp
@@ -595,7 +595,7 @@ RID RasterizerStorageGLES3::texture_create() {
 	return texture_owner.make_rid(texture);
 }
 
-void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_height, Image::Format p_format, uint32_t p_flags) {
+void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_height, int p_depth_3d, Image::Format p_format, VisualServer::TextureType p_type, uint32_t p_flags) {
 
 	GLenum format;
 	GLenum internal_format;
@@ -612,15 +612,33 @@ void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_
 	ERR_FAIL_COND(!texture);
 	texture->width = p_width;
 	texture->height = p_height;
+	texture->depth = p_depth_3d;
 	texture->format = p_format;
 	texture->flags = p_flags;
 	texture->stored_cube_sides = 0;
-	texture->target = (p_flags & VS::TEXTURE_FLAG_CUBEMAP) ? GL_TEXTURE_CUBE_MAP : GL_TEXTURE_2D;
+
+	texture->type = p_type;
+
+	switch (p_type) {
+		case VS::TEXTURE_TYPE_2D: {
+			texture->target = GL_TEXTURE_2D;
+		} break;
+		case VS::TEXTURE_TYPE_CUBEMAP: {
+			texture->target = GL_TEXTURE_CUBE_MAP;
+		} break;
+		case VS::TEXTURE_TYPE_2D_ARRAY: {
+			texture->target = GL_TEXTURE_2D_ARRAY;
+		} break;
+		case VS::TEXTURE_TYPE_3D: {
+			texture->target = GL_TEXTURE_3D;
+		} break;
+	}
 
 	_get_gl_image_and_format(Ref<Image>(), texture->format, texture->flags, format, internal_format, type, compressed, srgb);
 
 	texture->alloc_width = texture->width;
 	texture->alloc_height = texture->height;
+	texture->alloc_depth = texture->depth;
 
 	texture->gl_format_cache = format;
 	texture->gl_type_cache = type;
@@ -633,7 +651,34 @@ void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(texture->target, texture->tex_id);
 
-	if (p_flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING) {
+	if (p_type == VS::TEXTURE_TYPE_3D || p_type == VS::TEXTURE_TYPE_2D_ARRAY) {
+
+		int width = p_width;
+		int height = p_height;
+		int depth = p_depth_3d;
+
+		int mipmaps = 0;
+
+		while (width != 1 && height != 1) {
+			glTexImage3D(texture->target, 0, internal_format, width, height, depth, 0, format, type, NULL);
+
+			width = MAX(1, width / 2);
+			height = MAX(1, height / 2);
+
+			if (p_type == VS::TEXTURE_TYPE_3D) {
+				depth = MAX(1, depth / 2);
+			}
+
+			mipmaps++;
+
+			if (!(p_flags & VS::TEXTURE_FLAG_MIPMAPS))
+				break;
+		}
+
+		glTexParameteri(texture->target, GL_TEXTURE_BASE_LEVEL, 0);
+		glTexParameteri(texture->target, GL_TEXTURE_MAX_LEVEL, mipmaps - 1);
+
+	} else if (p_flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING) {
 		//prealloc if video
 		glTexImage2D(texture->target, 0, internal_format, p_width, p_height, 0, format, type, NULL);
 	}
@@ -641,7 +686,7 @@ void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_
 	texture->active = true;
 }
 
-void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p_image, VS::CubeMapSide p_cube_side) {
+void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p_image, int p_layer) {
 
 	Texture *texture = texture_owner.get(p_texture);
 
@@ -658,7 +703,7 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 	bool srgb;
 
 	if (config.keep_original_textures && !(texture->flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING)) {
-		texture->images[p_cube_side] = p_image;
+		texture->images[p_layer] = p_image;
 	}
 
 	Ref<Image> img = _get_gl_image_and_format(p_image, p_image->get_format(), texture->flags, format, internal_format, type, compressed, srgb);
@@ -677,7 +722,23 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 		}
 	};
 
-	GLenum blit_target = (texture->target == GL_TEXTURE_CUBE_MAP) ? _cube_side_enum[p_cube_side] : GL_TEXTURE_2D;
+	GLenum blit_target;
+
+	switch (texture->type) {
+		case VS::TEXTURE_TYPE_2D: {
+			blit_target = GL_TEXTURE_2D;
+		} break;
+		case VS::TEXTURE_TYPE_CUBEMAP: {
+			ERR_FAIL_INDEX(p_layer, 6);
+			blit_target = _cube_side_enum[p_layer];
+		} break;
+		case VS::TEXTURE_TYPE_2D_ARRAY: {
+			blit_target = GL_TEXTURE_2D_ARRAY;
+		} break;
+		case VS::TEXTURE_TYPE_3D: {
+			blit_target = GL_TEXTURE_3D;
+		} break;
+	}
 
 	texture->data_size = img->get_data().size();
 	PoolVector<uint8_t>::Read read = img->get_data().read();
@@ -785,20 +846,36 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 
 		//print_line("mipmap: "+itos(i)+" size: "+itos(size)+" w: "+itos(mm_w)+", h: "+itos(mm_h));
 
-		if (texture->compressed) {
-			glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+		if (texture->type == VS::TEXTURE_TYPE_2D || texture->type == VS::TEXTURE_TYPE_CUBEMAP) {
+
+			if (texture->compressed) {
+				glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
 
-			int bw = w;
-			int bh = h;
+				int bw = w;
+				int bh = h;
 
-			glCompressedTexImage2D(blit_target, i, internal_format, bw, bh, 0, size, &read[ofs]);
+				glCompressedTexImage2D(blit_target, i, internal_format, bw, bh, 0, size, &read[ofs]);
 
+			} else {
+				glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+				if (texture->flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING) {
+					glTexSubImage2D(blit_target, i, 0, 0, w, h, format, type, &read[ofs]);
+				} else {
+					glTexImage2D(blit_target, i, internal_format, w, h, 0, format, type, &read[ofs]);
+				}
+			}
 		} else {
-			glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-			if (texture->flags & VS::TEXTURE_FLAG_USED_FOR_STREAMING) {
-				glTexSubImage2D(blit_target, i, 0, 0, w, h, format, type, &read[ofs]);
+			if (texture->compressed) {
+				glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+				int bw = w;
+				int bh = h;
+
+				glCompressedTexSubImage3D(blit_target, i, 0, 0, p_layer, bw, bh, 1, internal_format, size, &read[ofs]);
 			} else {
-				glTexImage2D(blit_target, i, internal_format, w, h, 0, format, type, &read[ofs]);
+				glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+				glTexSubImage3D(blit_target, i, 0, 0, p_layer, w, h, 1, format, type, &read[ofs]);
 			}
 		}
 		tsize += size;
@@ -813,14 +890,17 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 
 	//printf("texture: %i x %i - size: %i - total: %i\n",texture->width,texture->height,tsize,_rinfo.texture_mem);
 
-	texture->stored_cube_sides |= (1 << p_cube_side);
+	texture->stored_cube_sides |= (1 << p_layer);
 
-	if ((texture->flags & VS::TEXTURE_FLAG_MIPMAPS) && mipmaps == 1 && !texture->ignore_mipmaps && (!(texture->flags & VS::TEXTURE_FLAG_CUBEMAP) || texture->stored_cube_sides == (1 << 6) - 1)) {
+	if ((texture->type == VS::TEXTURE_TYPE_2D || texture->type == VS::TEXTURE_TYPE_CUBEMAP) && (texture->flags & VS::TEXTURE_FLAG_MIPMAPS) && mipmaps == 1 && !texture->ignore_mipmaps && (texture->type != VS::TEXTURE_TYPE_CUBEMAP || texture->stored_cube_sides == (1 << 6) - 1)) {
 		//generate mipmaps if they were requested and the image does not contain them
 		glGenerateMipmap(texture->target);
 	} else if (mipmaps > 1) {
 		glTexParameteri(texture->target, GL_TEXTURE_BASE_LEVEL, 0);
 		glTexParameteri(texture->target, GL_TEXTURE_MAX_LEVEL, mipmaps - 1);
+	} else {
+		glTexParameteri(texture->target, GL_TEXTURE_BASE_LEVEL, 0);
+		glTexParameteri(texture->target, GL_TEXTURE_MAX_LEVEL, 0);
 	}
 
 	texture->mipmaps = mipmaps;
@@ -831,7 +911,7 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 // Uploads pixel data to a sub-region of a texture, for the specified mipmap.
 // The texture pixels must have been allocated before, because most features seen in texture_set_data() make no sense in a partial update.
 // TODO If we want this to be usable without pre-filling pixels with a full image, we have to call glTexImage2D() with null data.
-void RasterizerStorageGLES3::texture_set_data_partial(RID p_texture, const Ref<Image> &p_image, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y, int p_dst_mip, VS::CubeMapSide p_cube_side) {
+void RasterizerStorageGLES3::texture_set_data_partial(RID p_texture, const Ref<Image> &p_image, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y, int p_dst_mip, int p_layer) {
 
 	Texture *texture = texture_owner.get(p_texture);
 
@@ -859,7 +939,23 @@ void RasterizerStorageGLES3::texture_set_data_partial(RID p_texture, const Ref<I
 
 	Ref<Image> img = _get_gl_image_and_format(p_sub_img, p_sub_img->get_format(), texture->flags, format, internal_format, type, compressed, srgb);
 
-	GLenum blit_target = (texture->target == GL_TEXTURE_CUBE_MAP) ? _cube_side_enum[p_cube_side] : GL_TEXTURE_2D;
+	GLenum blit_target;
+
+	switch (texture->type) {
+		case VS::TEXTURE_TYPE_2D: {
+			blit_target = GL_TEXTURE_2D;
+		} break;
+		case VS::TEXTURE_TYPE_CUBEMAP: {
+			ERR_FAIL_INDEX(p_layer, 6);
+			blit_target = _cube_side_enum[p_layer];
+		} break;
+		case VS::TEXTURE_TYPE_2D_ARRAY: {
+			blit_target = GL_TEXTURE_2D_ARRAY;
+		} break;
+		case VS::TEXTURE_TYPE_3D: {
+			blit_target = GL_TEXTURE_3D;
+		} break;
+	}
 
 	PoolVector<uint8_t>::Read read = img->get_data().read();
 
@@ -869,18 +965,38 @@ void RasterizerStorageGLES3::texture_set_data_partial(RID p_texture, const Ref<I
 	int src_data_size = img->get_data().size();
 	int src_ofs = 0;
 
-	if (texture->compressed) {
-		glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
-		glCompressedTexSubImage2D(blit_target, p_dst_mip, dst_x, dst_y, src_w, src_h, internal_format, src_data_size, &read[src_ofs]);
+	if (texture->type == VS::TEXTURE_TYPE_2D || texture->type == VS::TEXTURE_TYPE_CUBEMAP) {
+		if (texture->compressed) {
+			glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+			glCompressedTexSubImage2D(blit_target, p_dst_mip, dst_x, dst_y, src_w, src_h, internal_format, src_data_size, &read[src_ofs]);
 
+		} else {
+			glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+			// `format` has to match the internal_format used when the texture was created
+			glTexSubImage2D(blit_target, p_dst_mip, dst_x, dst_y, src_w, src_h, format, type, &read[src_ofs]);
+		}
 	} else {
-		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-		// `format` has to match the internal_format used when the texture was created
-		glTexSubImage2D(blit_target, p_dst_mip, dst_x, dst_y, src_w, src_h, format, type, &read[src_ofs]);
+		if (texture->compressed) {
+			glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+			glCompressedTexSubImage3D(blit_target, p_dst_mip, dst_x, dst_y, p_layer, src_w, src_h, 1, format, src_data_size, &read[src_ofs]);
+		} else {
+			glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+			// `format` has to match the internal_format used when the texture was created
+			glTexSubImage3D(blit_target, p_dst_mip, dst_x, dst_y, p_layer, src_w, src_h, 1, format, type, &read[src_ofs]);
+		}
+	}
+
+	if (texture->flags & VS::TEXTURE_FLAG_FILTER) {
+
+		glTexParameteri(texture->target, GL_TEXTURE_MAG_FILTER, GL_LINEAR); // Linear Filtering
+
+	} else {
+
+		glTexParameteri(texture->target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // raw Filtering
 	}
 }
 
-Ref<Image> RasterizerStorageGLES3::texture_get_data(RID p_texture, VS::CubeMapSide p_cube_side) const {
+Ref<Image> RasterizerStorageGLES3::texture_get_data(RID p_texture, int p_layer) const {
 
 	Texture *texture = texture_owner.get(p_texture);
 
@@ -888,8 +1004,8 @@ Ref<Image> RasterizerStorageGLES3::texture_get_data(RID p_texture, VS::CubeMapSi
 	ERR_FAIL_COND_V(!texture->active, Ref<Image>());
 	ERR_FAIL_COND_V(texture->data_size == 0 && !texture->render_target, Ref<Image>());
 
-	if (!texture->images[p_cube_side].is_null()) {
-		return texture->images[p_cube_side];
+	if (texture->type == VS::TEXTURE_TYPE_CUBEMAP && p_layer < 6 && !texture->images[p_layer].is_null()) {
+		return texture->images[p_layer];
 	}
 
 #ifdef GLES_OVER_GL
@@ -977,10 +1093,10 @@ void RasterizerStorageGLES3::texture_set_flags(RID p_texture, uint32_t p_flags)
 
 	bool had_mipmaps = texture->flags & VS::TEXTURE_FLAG_MIPMAPS;
 
+	texture->flags = p_flags;
+
 	glActiveTexture(GL_TEXTURE0);
 	glBindTexture(texture->target, texture->tex_id);
-	uint32_t cube = texture->flags & VS::TEXTURE_FLAG_CUBEMAP;
-	texture->flags = p_flags | cube; // can't remove a cube from being a cube
 
 	if (((texture->flags & VS::TEXTURE_FLAG_REPEAT) || (texture->flags & VS::TEXTURE_FLAG_MIRRORED_REPEAT)) && texture->target != GL_TEXTURE_CUBE_MAP) {
 
@@ -1058,6 +1174,14 @@ Image::Format RasterizerStorageGLES3::texture_get_format(RID p_texture) const {
 
 	return texture->format;
 }
+
+VisualServer::TextureType RasterizerStorageGLES3::texture_get_type(RID p_texture) const {
+	Texture *texture = texture_owner.get(p_texture);
+
+	ERR_FAIL_COND_V(!texture, VS::TEXTURE_TYPE_2D);
+
+	return texture->type;
+}
 uint32_t RasterizerStorageGLES3::texture_get_texid(RID p_texture) const {
 
 	Texture *texture = texture_owner.get(p_texture);
@@ -1083,7 +1207,16 @@ uint32_t RasterizerStorageGLES3::texture_get_height(RID p_texture) const {
 	return texture->height;
 }
 
-void RasterizerStorageGLES3::texture_set_size_override(RID p_texture, int p_width, int p_height) {
+uint32_t RasterizerStorageGLES3::texture_get_depth(RID p_texture) const {
+
+	Texture *texture = texture_owner.get(p_texture);
+
+	ERR_FAIL_COND_V(!texture, 0);
+
+	return texture->depth;
+}
+
+void RasterizerStorageGLES3::texture_set_size_override(RID p_texture, int p_width, int p_height, int p_depth) {
 
 	Texture *texture = texture_owner.get(p_texture);
 
@@ -1123,8 +1256,9 @@ void RasterizerStorageGLES3::texture_debug_usage(List<VS::TextureInfo> *r_info)
 		VS::TextureInfo tinfo;
 		tinfo.path = t->path;
 		tinfo.format = t->format;
-		tinfo.size.x = t->alloc_width;
-		tinfo.size.y = t->alloc_height;
+		tinfo.width = t->alloc_width;
+		tinfo.height = t->alloc_height;
+		tinfo.depth = 0;
 		tinfo.bytes = t->total_data_size;
 		r_info->push_back(tinfo);
 	}
@@ -1169,7 +1303,7 @@ RID RasterizerStorageGLES3::texture_create_radiance_cubemap(RID p_source, int p_
 
 	Texture *texture = texture_owner.get(p_source);
 	ERR_FAIL_COND_V(!texture, RID());
-	ERR_FAIL_COND_V(!(texture->flags & VS::TEXTURE_FLAG_CUBEMAP), RID());
+	ERR_FAIL_COND_V(texture->type != VS::TEXTURE_TYPE_CUBEMAP, RID());
 
 	bool use_float = config.hdr_supported;
 
@@ -1285,7 +1419,8 @@ RID RasterizerStorageGLES3::texture_create_radiance_cubemap(RID p_source, int p_
 
 	Texture *ctex = memnew(Texture);
 
-	ctex->flags = VS::TEXTURE_FLAG_CUBEMAP | VS::TEXTURE_FLAG_MIPMAPS | VS::TEXTURE_FLAG_FILTER;
+	ctex->type = VS::TEXTURE_TYPE_CUBEMAP;
+	ctex->flags = VS::TEXTURE_FLAG_MIPMAPS | VS::TEXTURE_FLAG_FILTER;
 	ctex->width = p_resolution;
 	ctex->height = p_resolution;
 	ctex->alloc_width = p_resolution;
@@ -1765,6 +1900,7 @@ void RasterizerStorageGLES3::_update_shader(Shader *p_shader) const {
 	p_shader->ubo_offsets = gen_code.uniform_offsets;
 	p_shader->texture_count = gen_code.texture_uniforms.size();
 	p_shader->texture_hints = gen_code.texture_hints;
+	p_shader->texture_types = gen_code.texture_types;
 
 	p_shader->uses_vertex_time = gen_code.uses_vertex_time;
 	p_shader->uses_fragment_time = gen_code.uses_fragment_time;
@@ -1875,6 +2011,13 @@ void RasterizerStorageGLES3::shader_get_param_list(RID p_shader, List<PropertyIn
 				pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
 				pi.hint_string = "Texture";
 			} break;
+			case ShaderLanguage::TYPE_SAMPLER3D:
+			case ShaderLanguage::TYPE_ISAMPLER3D:
+			case ShaderLanguage::TYPE_USAMPLER3D: {
+				pi.type = Variant::OBJECT;
+				pi.hint = PROPERTY_HINT_RESOURCE_TYPE;
+				pi.hint_string = "Texture3D";
+			} break;
 			case ShaderLanguage::TYPE_SAMPLERCUBE: {
 
 				pi.type = Variant::OBJECT;
@@ -2649,6 +2792,7 @@ void RasterizerStorageGLES3::_update_material(Material *material) {
 	//set up the texture array, for easy access when it needs to be drawn
 	if (material->shader && material->shader->texture_count) {
 
+		material->texture_is_3d.resize(material->shader->texture_count);
 		material->textures.resize(material->shader->texture_count);
 
 		for (Map<StringName, ShaderLanguage::ShaderNode::Uniform>::Element *E = material->shader->uniforms.front(); E; E = E->next()) {
@@ -2658,6 +2802,16 @@ void RasterizerStorageGLES3::_update_material(Material *material) {
 
 			RID texture;
 
+			switch (E->get().type) {
+				case ShaderLanguage::TYPE_SAMPLER3D:
+				case ShaderLanguage::TYPE_SAMPLER2DARRAY: {
+					material->texture_is_3d.write[E->get().texture_order] = true;
+				} break;
+				default: {
+					material->texture_is_3d.write[E->get().texture_order] = false;
+				} break;
+			}
+
 			Map<StringName, Variant>::Element *V = material->params.find(E->key());
 			if (V) {
 				texture = V->get();
@@ -2675,6 +2829,7 @@ void RasterizerStorageGLES3::_update_material(Material *material) {
 
 	} else {
 		material->textures.clear();
+		material->texture_is_3d.clear();
 	}
 }
 
@@ -6999,6 +7154,7 @@ bool RasterizerStorageGLES3::free(RID p_rid) {
 		info.texture_mem -= texture->total_data_size;
 		texture_owner.free(p_rid);
 		memdelete(texture);
+
 	} else if (sky_owner.owns(p_rid)) {
 		// delete the sky
 		Sky *sky = sky_owner.get(p_rid);
@@ -7408,6 +7564,15 @@ void RasterizerStorageGLES3::initialize() {
 		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 8, 8, 0, GL_RGB, GL_UNSIGNED_BYTE, anisotexdata);
 		glGenerateMipmap(GL_TEXTURE_2D);
 		glBindTexture(GL_TEXTURE_2D, 0);
+
+		glGenTextures(1, &resources.white_tex_3d);
+
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_3D, resources.white_tex_3d);
+		glTexImage3D(GL_TEXTURE_3D, 0, GL_RGB, 2, 2, 2, 0, GL_RGB, GL_UNSIGNED_BYTE, whitetexdata);
+
+		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_BASE_LEVEL, 0);
+		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAX_LEVEL, 0);
 	}
 
 	glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &config.max_texture_image_units);
diff --git a/drivers/gles3/rasterizer_storage_gles3.h b/drivers/gles3/rasterizer_storage_gles3.h
index d9c770d1b7..5b8b524021 100644
--- a/drivers/gles3/rasterizer_storage_gles3.h
+++ b/drivers/gles3/rasterizer_storage_gles3.h
@@ -123,6 +123,8 @@ public:
 		GLuint normal_tex;
 		GLuint aniso_tex;
 
+		GLuint white_tex_3d;
+
 		GLuint quadie;
 		GLuint quadie_array;
 
@@ -248,9 +250,10 @@ public:
 
 		String path;
 		uint32_t flags;
-		int width, height;
-		int alloc_width, alloc_height;
+		int width, height, depth;
+		int alloc_width, alloc_height, alloc_depth;
 		Image::Format format;
+		VS::TextureType type;
 
 		GLenum target;
 		GLenum gl_format_cache;
@@ -340,17 +343,19 @@ public:
 	Ref<Image> _get_gl_image_and_format(const Ref<Image> &p_image, Image::Format p_format, uint32_t p_flags, GLenum &r_gl_format, GLenum &r_gl_internal_format, GLenum &r_gl_type, bool &r_compressed, bool &srgb);
 
 	virtual RID texture_create();
-	virtual void texture_allocate(RID p_texture, int p_width, int p_height, Image::Format p_format, uint32_t p_flags = VS::TEXTURE_FLAGS_DEFAULT);
-	virtual void texture_set_data(RID p_texture, const Ref<Image> &p_image, VS::CubeMapSide p_cube_side = VS::CUBEMAP_LEFT);
-	virtual void texture_set_data_partial(RID p_texture, const Ref<Image> &p_image, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y, int p_dst_mip, VS::CubeMapSide p_cube_side = VS::CUBEMAP_LEFT);
-	virtual Ref<Image> texture_get_data(RID p_texture, VS::CubeMapSide p_cube_side = VS::CUBEMAP_LEFT) const;
+	virtual void texture_allocate(RID p_texture, int p_width, int p_height, int p_depth_3d, Image::Format p_format, VS::TextureType p_type, uint32_t p_flags = VS::TEXTURE_FLAGS_DEFAULT);
+	virtual void texture_set_data(RID p_texture, const Ref<Image> &p_image, int p_layer = 0);
+	virtual void texture_set_data_partial(RID p_texture, const Ref<Image> &p_image, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y, int p_dst_mip, int p_layer = 0);
+	virtual Ref<Image> texture_get_data(RID p_texture, int p_layer = 0) const;
 	virtual void texture_set_flags(RID p_texture, uint32_t p_flags);
 	virtual uint32_t texture_get_flags(RID p_texture) const;
 	virtual Image::Format texture_get_format(RID p_texture) const;
+	virtual VS::TextureType texture_get_type(RID p_texture) const;
 	virtual uint32_t texture_get_texid(RID p_texture) const;
 	virtual uint32_t texture_get_width(RID p_texture) const;
 	virtual uint32_t texture_get_height(RID p_texture) const;
-	virtual void texture_set_size_override(RID p_texture, int p_width, int p_height);
+	virtual uint32_t texture_get_depth(RID p_texture) const;
+	virtual void texture_set_size_override(RID p_texture, int p_width, int p_height, int p_depth);
 
 	virtual void texture_set_path(RID p_texture, const String &p_path);
 	virtual String texture_get_path(RID p_texture) const;
@@ -410,6 +415,7 @@ public:
 
 		Map<StringName, RID> default_textures;
 
+		Vector<ShaderLanguage::DataType> texture_types;
 		Vector<ShaderLanguage::ShaderNode::Uniform::Hint> texture_hints;
 
 		bool valid;
@@ -532,6 +538,7 @@ public:
 		Map<StringName, Variant> params;
 		SelfList<Material> list;
 		SelfList<Material> dirty_list;
+		Vector<bool> texture_is_3d;
 		Vector<RID> textures;
 		float line_width;
 		int render_priority;
diff --git a/drivers/gles3/shader_compiler_gles3.cpp b/drivers/gles3/shader_compiler_gles3.cpp
index 4ff8c72e13..95bfbd0ce5 100644
--- a/drivers/gles3/shader_compiler_gles3.cpp
+++ b/drivers/gles3/shader_compiler_gles3.cpp
@@ -341,6 +341,7 @@ String ShaderCompilerGLES3::_dump_node_code(SL::Node *p_node, int p_level, Gener
 
 			r_gen_code.texture_uniforms.resize(max_texture_uniforms);
 			r_gen_code.texture_hints.resize(max_texture_uniforms);
+			r_gen_code.texture_types.resize(max_texture_uniforms);
 
 			Vector<int> uniform_sizes;
 			Vector<int> uniform_alignments;
@@ -367,6 +368,7 @@ String ShaderCompilerGLES3::_dump_node_code(SL::Node *p_node, int p_level, Gener
 					r_gen_code.fragment_global += ucode;
 					r_gen_code.texture_uniforms.write[E->get().texture_order] = _mkid(E->key());
 					r_gen_code.texture_hints.write[E->get().texture_order] = E->get().hint;
+					r_gen_code.texture_types.write[E->get().texture_order] = E->get().type;
 				} else {
 					if (!uses_uniforms) {
 
diff --git a/drivers/gles3/shader_compiler_gles3.h b/drivers/gles3/shader_compiler_gles3.h
index bf776ee062..7a32057741 100644
--- a/drivers/gles3/shader_compiler_gles3.h
+++ b/drivers/gles3/shader_compiler_gles3.h
@@ -52,6 +52,7 @@ public:
 
 		Vector<CharString> defines;
 		Vector<StringName> texture_uniforms;
+		Vector<ShaderLanguage::DataType> texture_types;
 		Vector<ShaderLanguage::ShaderNode::Uniform::Hint> texture_hints;
 
 		Vector<uint32_t> uniform_offsets;