From 5c64e5e13d9a75cac510aac3128fc6ee780ab243 Mon Sep 17 00:00:00 2001
From: Andrey Kleshchev <andreykproductengine@lindenlab.com>
Date: Fri, 30 Aug 2024 18:51:48 +0300
Subject: viewer#2411 LLFontGL::render optimizations #3

---
 indra/llrender/llvertexbuffer.cpp | 47 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'indra/llrender/llvertexbuffer.cpp')

diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp
index 02afcf12c6..11b41730aa 100644
--- a/indra/llrender/llvertexbuffer.cpp
+++ b/indra/llrender/llvertexbuffer.cpp
@@ -570,6 +570,53 @@ public:
 
 static LLVBOPool* sVBOPool = nullptr;
 
+void LLVertexBufferData::draw()
+{
+    if (!mVB)
+    {
+        // signal for pushUIMatrix
+        return; // todo: find a better way?
+    }
+
+    if (mTexName)
+    {
+        gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_TEXTURE, mTexName);
+    }
+    else
+    {
+        gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+    }
+
+    gGL.matrixMode(LLRender::MM_MODELVIEW);
+    gGL.pushMatrix();
+    gGL.loadMatrix(mModelView.m);
+    gGL.matrixMode(LLRender::MM_PROJECTION);
+    gGL.pushMatrix();
+    gGL.loadMatrix(mProjection.m);
+    gGL.matrixMode(LLRender::MM_TEXTURE0);
+    gGL.pushMatrix();
+    gGL.loadMatrix(mTexture0.m);
+
+    mVB->setBuffer();
+
+    if (mMode == LLRender::QUADS && LLRender::sGLCoreProfile)
+    {
+        mVB->drawArrays(LLRender::TRIANGLES, 0, mCount);
+    }
+    else
+    {
+        mVB->drawArrays(mMode, 0, mCount);
+    }
+
+    gGL.popMatrix();
+    gGL.matrixMode(LLRender::MM_PROJECTION);
+    gGL.popMatrix();
+    gGL.matrixMode(LLRender::MM_MODELVIEW);
+    gGL.popMatrix();
+}
+
+//============================================================================
+
 //static
 U64 LLVertexBuffer::getBytesAllocated()
 {
-- 
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