From 0f6fcf759a1a02c1dd8955971d54395e0d529244 Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 9 Sep 2012 13:09:20 +0300
Subject: switch to hardware depend batch sizes.

but limit max batch size to 1024.
---
 src/graphicsmanager.cpp | 36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

(limited to 'src/graphicsmanager.cpp')

diff --git a/src/graphicsmanager.cpp b/src/graphicsmanager.cpp
index 86814b4be..66502434d 100644
--- a/src/graphicsmanager.cpp
+++ b/src/graphicsmanager.cpp
@@ -54,7 +54,8 @@ GraphicsManager::GraphicsManager() :
     mMinor(0),
     mMajor(0),
     mPlatformMinor(0),
-    mPlatformMajor(0)
+    mPlatformMajor(0),
+    mMaxVertices(500)
 {
 }
 
@@ -80,10 +81,8 @@ bool GraphicsManager::detectGraphics()
     logger->log("enable opengl mode");
     SDL_SetVideoMode(100, 100, 0, SDL_ANYFORMAT | SDL_OPENGL);
 
-    setGLVersion();
-    initOpenGLFunctions();
-    updateExtensions();
-    updatePlanformExtensions();
+    initOpenGL();
+
     std::string vendor = getGLString(GL_VENDOR);
     std::string renderer = getGLString(GL_RENDERER);
     logger->log("gl vendor: %s", vendor.c_str());
@@ -598,3 +597,30 @@ void GraphicsManager::initOpenGLFunctions()
 #endif
 #endif
 }
+
+void GraphicsManager::updateLimits()
+{
+#ifdef USE_OPENGL
+    GLint value;
+    glGetIntegerv(GL_MAX_ELEMENTS_VERTICES, &value);
+    logger->log("GL_MAX_ELEMENTS_VERTICES: %d", value);
+
+    mMaxVertices = value;
+
+    glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &value);
+    logger->log("GL_MAX_ELEMENTS_INDICES: %d", value);
+    if (value < mMaxVertices)
+        mMaxVertices = value;
+#endif
+}
+
+void GraphicsManager::initOpenGL()
+{
+#ifdef USE_OPENGL
+    setGLVersion();
+    initOpenGLFunctions();
+    updateExtensions();
+    updatePlanformExtensions();
+    updateLimits();
+#endif
+}
-- 
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