From 7fce0a73cc9b099c4ca67b3bc2e8bbe3060230c6 Mon Sep 17 00:00:00 2001
From: Kim Motoyoshi Kalland <kim.kalland@nokia.com>
Date: Wed, 11 May 2011 10:53:00 +0200
Subject: Check if OES_texture_npot is present on OpenGL ES 2.

Unless the OES_texture_npot extension is present, non-power-
of-two textures have some restrictions on OpenGL ES 2.

Reviewed-by: Samuel
---
 src/opengl/qglfunctions.cpp | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

(limited to 'src/opengl')

diff --git a/src/opengl/qglfunctions.cpp b/src/opengl/qglfunctions.cpp
index 8027081543..e478fa7a4c 100644
--- a/src/opengl/qglfunctions.cpp
+++ b/src/opengl/qglfunctions.cpp
@@ -211,19 +211,23 @@ QGLFunctions::QGLFunctions(const QGLContext *context)
 static int qt_gl_resolve_features()
 {
 #if defined(QT_OPENGL_ES_2)
-    return QGLFunctions::Multitexture |
-           QGLFunctions::Shaders |
-           QGLFunctions::Buffers |
-           QGLFunctions::Framebuffers |
-           QGLFunctions::BlendColor |
-           QGLFunctions::BlendEquation |
-           QGLFunctions::BlendEquationSeparate |
-           QGLFunctions::BlendFuncSeparate |
-           QGLFunctions::BlendSubtract |
-           QGLFunctions::CompressedTextures |
-           QGLFunctions::Multisample |
-           QGLFunctions::StencilSeparate |
-           QGLFunctions::NPOTTextures;
+    int features = QGLFunctions::Multitexture |
+                   QGLFunctions::Shaders |
+                   QGLFunctions::Buffers |
+                   QGLFunctions::Framebuffers |
+                   QGLFunctions::BlendColor |
+                   QGLFunctions::BlendEquation |
+                   QGLFunctions::BlendEquationSeparate |
+                   QGLFunctions::BlendFuncSeparate |
+                   QGLFunctions::BlendSubtract |
+                   QGLFunctions::CompressedTextures |
+                   QGLFunctions::Multisample |
+                   QGLFunctions::StencilSeparate;
+    if (extensions.match("GL_OES_texture_npot"))
+        features |= QGLFunctions::NPOTTextures;
+    if (extensions.match("GL_IMG_texture_npot"))
+        features |= QGLFunctions::NPOTTextures;
+    return features;
 #elif defined(QT_OPENGL_ES)
     int features = QGLFunctions::Multitexture |
                    QGLFunctions::Buffers |
@@ -240,6 +244,8 @@ static int qt_gl_resolve_features()
         features |= QGLFunctions::BlendSubtract;
     if (extensions.match("GL_OES_texture_npot"))
         features |= QGLFunctions::NPOTTextures;
+    if (extensions.match("GL_IMG_texture_npot"))
+        features |= QGLFunctions::NPOTTextures;
     return features;
 #else
     int features = 0;
-- 
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