viewer#2411 LLFontGL::render optimizations

1 files changed, 85 insertions, 0 deletions

diff --git a/indra/llrender/llfontvertexbuffer.h b/indra/llrender/llfontvertexbuffer.h
new file mode 100644
index 0000000000..bd42cf6c2d
--- /dev/null
+++ b/indra/llrender/llfontvertexbuffer.h
@@ -0,0 +1,85 @@
+/**
+ * @file llfontgl.h
+ * @author Andrii Kleshchev
+ * @brief Buffer storage for font rendering.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLFONTVERTEXBUFFER_H
+#define LL_LLFONTVERTEXBUFFER_H
+
+#include "llfontgl.h"
+
+class LLVertexBuffer;
+
+class LLFontVertexBuffer
+{
+public:
+    LLFontVertexBuffer(bool track_changes = true);
+    ~LLFontVertexBuffer();
+
+    void reset();
+
+    S32 render(const LLFontGL* fontp,
+        const LLWString& text,
+        S32 begin_offset,
+        F32 x, F32 y,
+        const LLColor4& color,
+        LLFontGL::HAlign halign = LLFontGL::LEFT, LLFontGL::VAlign valign = LLFontGL::BASELINE,
+        U8 style = LLFontGL::NORMAL, LLFontGL::ShadowType shadow = LLFontGL::NO_SHADOW,
+        S32 max_chars = S32_MAX, S32 max_pixels = S32_MAX,
+        F32* right_x = NULL,
+        bool use_ellipses = false,
+        bool use_color = true);
+
+private:
+
+    void genBuffers(const LLFontGL* fontp,
+         const LLWString& text,
+         S32 begin_offset,
+         F32 x, F32 y,
+         const LLColor4& color,
+         LLFontGL::HAlign halign, LLFontGL::VAlign valign,
+         U8 style, LLFontGL::ShadowType shadow,
+         S32 max_chars, S32 max_pixels,
+         F32* right_x,
+         bool use_ellipses,
+         bool use_color);
+
+
+    std::list<LLFontGL::LLVertexBufferData> mBufferList;
+    S32 mChars = 0;
+    S32 mLastOffset = 0;
+    S32 mLastMaxChars = 0;
+    S32 mLastMaxPixels = 0;
+    size_t mLastStringHash = 0;
+    F32 mLastX = 0.f;
+    F32 mLastY = 0.f;
+    LLColor4 mLastColor;
+    F32 mLastRightX = 0.f;
+    bool mTrackStringChanges = true;
+
+    static std::hash<LLWString> sStringHasher;
+};
+
+#endif