Fixed TextureArray and Texture3D issues

- Texture arrays and 3D textures weren't working previously due to an
  incorrect number of calls to glTexImage3D with incorrect level parameters.
  This change fixes that.
- Fixed the incorrect calculation of the byte size of layered textures.
- Added the layer count to the debugger info when viewing video memory usage.

1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/gles3/rasterizer_storage_gles3.cpp b/drivers/gles3/rasterizer_storage_gles3.cpp
index e38f9f922c..959bfaffc9 100644
--- a/drivers/gles3/rasterizer_storage_gles3.cpp
+++ b/drivers/gles3/rasterizer_storage_gles3.cpp
@@ -702,14 +702,18 @@ void RasterizerStorageGLES3::texture_allocate(RID p_texture, int p_width, int p_
 
 		int mipmaps = 0;
 
-		while (width != 1 && height != 1) {
-			glTexImage3D(texture->target, 0, internal_format, width, height, depth, 0, format, type, NULL);
+		while (width > 0 || height > 0 || (p_type == VS::TEXTURE_TYPE_3D && depth > 0)) {
+			width = MAX(1, width);
+			height = MAX(1, height);
+			depth = MAX(1, depth);
 
-			width = MAX(1, width / 2);
-			height = MAX(1, height / 2);
+			glTexImage3D(texture->target, mipmaps, internal_format, width, height, depth, 0, format, type, NULL);
+
+			width /= 2;
+			height /= 2;
 
 			if (p_type == VS::TEXTURE_TYPE_3D) {
-				depth = MAX(1, depth / 2);
+				depth /= 2;
 			}
 
 			mipmaps++;
@@ -926,6 +930,9 @@ void RasterizerStorageGLES3::texture_set_data(RID p_texture, const Ref<Image> &p
 		h = MAX(1, h >> 1);
 	}
 
+	// Handle array and 3D textures, as those set their data per layer.
+	tsize *= MAX(texture->alloc_depth, 1);
+
 	info.texture_mem -= texture->total_data_size;
 	texture->total_data_size = tsize;
 	info.texture_mem += texture->total_data_size;
@@ -1496,7 +1503,7 @@ void RasterizerStorageGLES3::texture_debug_usage(List<VS::TextureInfo> *r_info)
 		tinfo.format = t->format;
 		tinfo.width = t->alloc_width;
 		tinfo.height = t->alloc_height;
-		tinfo.depth = 0;
+		tinfo.depth = t->alloc_depth;
 		tinfo.bytes = t->total_data_size;
 		r_info->push_back(tinfo);
 	}