From 8e8ba4e4f1bd17d9dd4245ab5a5353e6c014aca8 Mon Sep 17 00:00:00 2001
From: Hayden Kowalchuk <hayden@hkowsoftware.com>
Date: Sat, 17 Aug 2019 17:54:10 -0400
Subject: [PATCH] fix: correctly implement all mipmap levels and cases

---
 GL/texture.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 49 insertions(+), 6 deletions(-)

diff --git a/GL/texture.c b/GL/texture.c
index 8941b7a..1131889 100644
--- a/GL/texture.c
+++ b/GL/texture.c
@@ -163,12 +163,16 @@ GLubyte _glGetActiveTexture() {
 
 GLubyte* _glGetMipmapLocation(TextureObject* obj, GLuint level) {
     GLuint offset = 0;
-    if(obj->width == obj->height){
-
-    if(obj->isPaletted){
     GLuint size = obj->height;
+    if(obj->width == size){
+    if(obj->isPaletted){
 
     switch(size >> level){
+        case 1024:
+        offset = 0x55558;
+        case 512:
+        offset = 0x15558;
+        break;        
         case 256:
         offset = 0x05558;
         break;
@@ -194,14 +198,53 @@ GLubyte* _glGetMipmapLocation(TextureObject* obj, GLuint level) {
         offset = 0x00004;
         break;
         case 1:
-        case 0:
+        offset = 0x00003;
+        break;
+    }
+    } else if(obj->isCompressed) {
+
+    switch(size >> level){
+        case 1024:
+        offset = 0x15556;
+        case 512:
+        offset = 0x05556;
+        break;        
+        case 256:
+        offset = 0x01556;
+        break;
+        case 128:
+        offset = 0x00556;
+        break;
+        case 64:
+        offset = 0x00156;
+        break;
+        case 32:
+        offset = 0x00056;
+        break;
+        case 16:
+        offset = 0x00016;
+        break;
+        case 8:
+        offset = 0x00006;
+        break;
+        case 4:
+        offset = 0x00002;
+        break;
+        case 2:
+        offset = 0x00001;
+        break;
+        case 1:
         offset = 0x00000;
         break;
     }
-    } else {
-    GLuint size = obj->height;
+    }else {
 
     switch(size >> level){
+        case 1024:
+        offset = 0xAAAB0;
+        case 512:
+        offset = 0x2AAB0;
+        break;
         case 256:
         offset = 0x0AAB0;
         break;