1 files changed, 126 insertions, 0 deletions
diff --git a/src/scene-ideas/logo.h b/src/scene-ideas/logo.h
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+/*
+ * (c) Copyright 1993, Silicon Graphics, Inc.
+ * Copyright © 2012 Linaro Limited
+ *
+ * This file is part of the glmark2 OpenGL (ES) 2.0 benchmark.
+ *
+ * glmark2 is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * glmark2 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 General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * glmark2.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *  Jesse Barker
+ */
+#ifndef LOGO_H_
+#define LOGO_H_
+
+#include <string>
+#include <vector>
+#include "vec.h"
+#include "stack.h"
+#include "gl-headers.h"
+#include "program.h"
+
+class SGILogo
+{
+public:
+    SGILogo();
+    ~SGILogo();
+
+    // Initialize the logo
+    void init();
+    bool valid() const { return valid_; }
+    void setPosition(const LibMatrix::vec3& position) { currentPosition_ = position; }
+    // Tell the logo to draw itself. DrawStyle tells it how.
+    // - LOGO_NORMAL renders the logo lit and shaded.
+    // - LOGO_FLAT renders the logo as if flattened onto a surface.
+    // - LOGO_SHADOW renders a stippled-looking shadow of the object.
+    enum DrawStyle
+    {
+        LOGO_NORMAL, 
+        LOGO_FLAT, 
+        LOGO_SHADOW
+    };
+    void draw(LibMatrix::Stack4& modelview, LibMatrix::Stack4& projection, 
+              const LibMatrix::vec4& lightPosition, DrawStyle style, 
+              const LibMatrix::uvec3& color = LibMatrix::uvec3());
+
+private:
+    void drawElbow();
+    void drawSingleCylinder();
+    void drawDoubleCylinder();
+    void bendLeft(LibMatrix::Stack4& ms);
+    void bendRight(LibMatrix::Stack4& ms);
+    void bendForward(LibMatrix::Stack4& ms);
+    void updateXform(const LibMatrix::mat4& mv, Program& program);
+    Program& getProgram();
+    LibMatrix::vec3 currentPosition_;
+    std::vector<LibMatrix::vec3> singleCylinderVertices_;
+    std::vector<LibMatrix::vec3> singleCylinderNormals_;
+    std::vector<LibMatrix::vec3> doubleCylinderVertices_;
+    std::vector<LibMatrix::vec3> doubleCylinderNormals_;
+    std::vector<LibMatrix::vec3> elbowVertices_;
+    std::vector<LibMatrix::vec3> elbowNormals_;
+    std::vector<LibMatrix::vec3> elbowShadowVertices_;
+    std::vector<unsigned short> indexData_;
+    // A simple map so we know where each section of our data starts within
+    // our vertex buffer object.
+    struct VertexDataMap
+    {
+        unsigned int scvOffset;
+        unsigned int scvSize;
+        unsigned int scnOffset;
+        unsigned int scnSize;
+        unsigned int dcvOffset;
+        unsigned int dcvSize;
+        unsigned int dcnOffset;
+        unsigned int dcnSize;
+        unsigned int evOffset;
+        unsigned int evSize;
+        unsigned int enOffset;
+        unsigned int enSize;
+        unsigned int esvOffset;
+        unsigned int esvSize;
+        unsigned int totalSize;
+    } dataMap_;
+    unsigned int bufferObjects_[2];
+    Program normalProgram_;
+    Program flatProgram_;
+    Program shadowProgram_;
+    std::string normalVertexShader_;
+    std::string normalFragmentShader_;
+    std::string flatVertexShader_;
+    std::string flatFragmentShader_;
+    std::string shadowVertexShader_;
+    std::string shadowFragmentShader_;
+    int normalNormalIndex_;
+    int normalVertexIndex_;
+    int flatVertexIndex_;
+    int shadowVertexIndex_;
+    int vertexIndex_;
+    static const std::string modelviewName_;
+    static const std::string projectionName_;
+    static const std::string lightPositionName_;
+    static const std::string logoColorName_;
+    static const std::string vertexAttribName_;
+    static const std::string normalAttribName_;
+    static const std::string normalMatrixName_;
+    // "Shadow" state
+    GLuint textureName_;
+    GLubyte textureImage_[32][32];
+    // This is the size in each direction of our texture image
+    static const unsigned int textureResolution_;
+    bool valid_;
+    DrawStyle drawStyle_;
+};
+
+#endif // LOGO_H_