From 204700ff7e2e45ecc4ce50582988c014626b0dfe Mon Sep 17 00:00:00 2001
From: Leith Bade <leith@mapbox.com>
Date: Tue, 2 Dec 2014 02:29:07 +1100
Subject: [PATCH] Stop mipmap allocation for textures

---
 src/geometry/glyph_atlas.cpp         | 1 +
 src/geometry/sprite_atlas.cpp        | 1 +
 src/renderer/prerendered_texture.cpp | 1 +
 src/util/raster.cpp                  | 2 +-
 4 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/geometry/glyph_atlas.cpp b/src/geometry/glyph_atlas.cpp
index 50bda5dc4..abfde0a55 100644
--- a/src/geometry/glyph_atlas.cpp
+++ b/src/geometry/glyph_atlas.cpp
@@ -143,6 +143,7 @@ void GlyphAtlas::bind() {
     if (!texture) {
         glGenTextures(1, &texture);
         glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
diff --git a/src/geometry/sprite_atlas.cpp b/src/geometry/sprite_atlas.cpp
index d7ef1e789..cc832b242 100644
--- a/src/geometry/sprite_atlas.cpp
+++ b/src/geometry/sprite_atlas.cpp
@@ -201,6 +201,7 @@ void SpriteAtlas::bind(bool linear) {
     if (!texture) {
         glGenTextures(1, &texture);
         glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
         first = true;
diff --git a/src/renderer/prerendered_texture.cpp b/src/renderer/prerendered_texture.cpp
index c9507d602..8d727d351 100644
--- a/src/renderer/prerendered_texture.cpp
+++ b/src/renderer/prerendered_texture.cpp
@@ -37,6 +37,7 @@ void PrerenderedTexture::bindFramebuffer() {
     if (texture == 0) {
         glGenTextures(1, &texture);
         glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
diff --git a/src/util/raster.cpp b/src/util/raster.cpp
index 4f6acc36c..40fb440fb 100644
--- a/src/util/raster.cpp
+++ b/src/util/raster.cpp
@@ -48,6 +48,7 @@ void Raster::bind(bool linear) {
     if (img && !textured) {
         texture = texturepool.getTextureID();
         glBindTexture(GL_TEXTURE_2D, texture);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
         glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, img->getData());
@@ -101,4 +102,3 @@ void Raster::updateTransitions(timestamp now) {
         fade_transition = nullptr;
     }
 }
-