From 287b983d27db29413abf18000dad025349e4255a Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Sat, 16 Dec 2017 11:25:01 +1100
Subject: [PATCH] [client] opengl: fixed broken mipmap logic

mipmapping is turned off for images that are scaled up a it degrades the
output quality.
---
 client/renderers/opengl.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/client/renderers/opengl.c b/client/renderers/opengl.c
index 38acd970..b092e02c 100644
--- a/client/renderers/opengl.c
+++ b/client/renderers/opengl.c
@@ -69,7 +69,6 @@ struct LGR_OpenGL
   int               fpsList;
   int               mouseList;
   LG_RendererRect   destRect;
-  bool              mipmap;
 
   bool              hasTextures;
   GLuint            textures[TEXTURE_COUNT];
@@ -365,7 +364,7 @@ void lgr_opengl_on_resize(void * opaque, const int width, const int height, cons
   if (!this || !this->configured)
     return;
 
-  this->window.x  = width;
+  this->window.x = width;
   this->window.y = height;
   memcpy(&this->destRect, &destRect, sizeof(LG_RendererRect));
 
@@ -634,15 +633,17 @@ bool lgr_opengl_on_frame_event(void * opaque, const uint8_t * data)
     (this->format.width  > this->destRect.w) ||
     (this->format.height > this->destRect.h));
 
-  if (this->mipmap != mipmap)
-  {
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
-        mipmap ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
-    this->mipmap = mipmap;
-  }
-
   if (mipmap)
+  {
     glGenerateMipmap(GL_TEXTURE_2D);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+  }
+  else
+  {
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+  }
 
   glBindTexture(GL_TEXTURE_2D, 0);