From 582a6b7db308f9bd2ea9b0022254d475deffa101 Mon Sep 17 00:00:00 2001
From: samcake <samuel.gateau@gmail.com>
Date: Fri, 1 Apr 2016 01:34:33 -0700
Subject: [PATCH] Adding the correct mip evaluation

---
 libraries/gpu/src/gpu/GLBackendTexture.cpp | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/libraries/gpu/src/gpu/GLBackendTexture.cpp b/libraries/gpu/src/gpu/GLBackendTexture.cpp
index 600786eb3e..8690b78503 100755
--- a/libraries/gpu/src/gpu/GLBackendTexture.cpp
+++ b/libraries/gpu/src/gpu/GLBackendTexture.cpp
@@ -49,7 +49,19 @@ void GLBackend::GLTexture::updateSize(GLuint virtualSize) {
     GLint gpuSize{ 0 };
     glGetTexLevelParameteriv(_target, 0, GL_TEXTURE_COMPRESSED, &gpuSize);
     if (gpuSize) {
-        glGetTexLevelParameteriv(_target, 0, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &gpuSize);
+        GLint baseLevel;
+        GLint maxLevel;
+        glGetTexParameteriv(_target, GL_TEXTURE_BASE_LEVEL, &baseLevel);
+        glGetTexParameteriv(_target, GL_TEXTURE_MAX_LEVEL, &maxLevel);
+
+        for (GLint level = baseLevel; level < maxLevel; level++) {
+            GLint levelSize{ 0 };
+            glGetTexLevelParameteriv(_target, level, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &levelSize);
+            if (levelSize <= 0) {
+                break;
+            }
+            gpuSize += levelSize;
+        }
         setSize(gpuSize);
     } else {
         setSize(virtualSize);