From f41fa279e803c1ea3f6912b15ea2869478625f1f Mon Sep 17 00:00:00 2001
From: skyjake <skyjake@users.sf.net>
Date: Sun, 28 Apr 2013 21:56:05 +0300
Subject: [PATCH] libgui|GLBuffer: Added a 3D vertex format

---
 doomsday/libgui/include/de/gui/glbuffer.h | 16 ++++++++++++++++
 doomsday/libgui/src/glbuffer.cpp          | 18 ++++++++++++++++--
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/doomsday/libgui/include/de/gui/glbuffer.h b/doomsday/libgui/include/de/gui/glbuffer.h
index 19493b88c6..eed97eba73 100644
--- a/doomsday/libgui/include/de/gui/glbuffer.h
+++ b/doomsday/libgui/include/de/gui/glbuffer.h
@@ -75,6 +75,22 @@ struct LIBGUI_PUBLIC Vertex2TexRgba
     static internal::AttribSpec const _spec[3];
 };
 
+/**
+ * Vertex format with 3D coordinates, one set of texture coordinates, and an
+ * RGBA color.
+ */
+struct LIBGUI_PUBLIC Vertex3TexRgba
+{
+    Vector3f pos;
+    Vector2f texCoord;
+    Vector4f rgba;
+
+    static internal::AttribSpecs formatSpec();
+
+private:
+    static internal::AttribSpec const _spec[3];
+};
+
 namespace gl
 {
     enum Usage {
diff --git a/doomsday/libgui/src/glbuffer.cpp b/doomsday/libgui/src/glbuffer.cpp
index 245f868e72..45c46af3f1 100644
--- a/doomsday/libgui/src/glbuffer.cpp
+++ b/doomsday/libgui/src/glbuffer.cpp
@@ -23,18 +23,32 @@ namespace de {
 using namespace internal;
 using namespace gl;
 
+// Vertex Formats ------------------------------------------------------------
+
 AttribSpec const Vertex2TexRgba::_spec[3] = {
     { AttribSpec::Position,  2, GL_FLOAT, false, sizeof(Vertex2TexRgba), 0 },
     { AttribSpec::TexCoord0, 2, GL_FLOAT, false, sizeof(Vertex2TexRgba), 2 * sizeof(float) },
     { AttribSpec::Color,     4, GL_FLOAT, false, sizeof(Vertex2TexRgba), 4 * sizeof(float) }
 };
 
-AttribSpecs Vertex2TexRgba::formatSpec()
-{
+AttribSpecs Vertex2TexRgba::formatSpec() {
     DENG2_ASSERT(sizeof(Vertex2TexRgba) == 8 * sizeof(float)); // sanity check
     return AttribSpecs(_spec, sizeof(_spec)/sizeof(_spec[0]));
 }
 
+AttribSpec const Vertex3TexRgba::_spec[3] = {
+    { AttribSpec::Position,  3, GL_FLOAT, false, sizeof(Vertex3TexRgba), 0 },
+    { AttribSpec::TexCoord0, 2, GL_FLOAT, false, sizeof(Vertex3TexRgba), 3 * sizeof(float) },
+    { AttribSpec::Color,     4, GL_FLOAT, false, sizeof(Vertex3TexRgba), 5 * sizeof(float) }
+};
+
+AttribSpecs Vertex3TexRgba::formatSpec() {
+    DENG2_ASSERT(sizeof(Vertex3TexRgba) == 9 * sizeof(float)); // sanity check
+    return AttribSpecs(_spec, sizeof(_spec)/sizeof(_spec[0]));
+}
+
+// ---------------------------------------------------------------------------
+
 DENG2_PIMPL(GLBuffer)
 {
     GLuint name;