Moved source files to src; sort triangles by texture.

CMakeLists.txt

@@ -11,17 +11,4 @@ find_package(LibXml2 REQUIRED)
 
 include_directories(${Boost_INCLUDE_DIR} ${OPENGL_INCLUDE_DIR} ${GLEW_INCLUDE_DIR} ${GLPNG_INCLUDE_DIR} ${LIBXML2_INCLUDE_DIR})
 
-add_executable(zoom
+add_subdirectory(src)
-  BSPTree.cpp BSPTree.h
-  Game.cpp Game.h
-  config.h
-  gl.h
-  Level.cpp Level.h
-  Renderer.cpp Renderer.h
-  Shader.cpp Shader.h
-  Texture.cpp Texture.h
-  Triangle.h
-  zoom.cpp
-)
-
-target_link_libraries(zoom ${Boost_LIBRARIES} ${OPENGL_LIBRARIES} ${GLEW_LIBRARY} ${GLPNG_LIBRARY} ${LIBXML2_LIBRARIES})

src/CMakeLists.txt

@@ -0,0 +1,13 @@
+add_executable(zoom
+  BSPTree.cpp BSPTree.h
+  Game.cpp Game.h
+  config.h
+  gl.h
+  Level.cpp Level.h
+  Renderer.cpp Renderer.h
+  Shader.cpp Shader.h
+  Texture.cpp Texture.h
+  Triangle.h
+  zoom.cpp
+)
+target_link_libraries(zoom ${Boost_LIBRARIES} ${OPENGL_LIBRARIES} ${GLEW_LIBRARY} ${GLPNG_LIBRARY} ${LIBXML2_LIBRARIES})

src/Game.cpp

@@ -23,6 +23,7 @@
 #include "Shader.h"
 #include "Triangle.h"
 #include "gl.h"
+#include <algorithm>
 
 namespace Zoom {
 
@@ -62,6 +63,8 @@ Game::Game(bool multisample) : angle(0), lightPos(0) {
   Shader::loadProgram("default.vert", "default.frag");
 
   loadLevel("level.xml");
+  triangles.insert(triangles.end(), level->getRooms().front().walls.begin(), level->getRooms().front().walls.end());
+  std::sort(triangles.begin(), triangles.end(), Renderer::TextureSorter());
 }
 
 bool Game::loadLevel(const std::string &name) {
@@ -104,17 +107,21 @@ void Game::render() {
     light[2] = -8.0;
   }
 
-  glLightfv(GL_LIGHT0, GL_POSITION, light);
+  /*std::vector<BSPTree::TriangleRecord> triangles(level->getRooms().front().walls.begin(),
+      level->getRooms().front().walls.end());
+  std::sort(triangles.begin(), triangles.end(), Renderer::TextureSorter());*/
 
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
   glPushMatrix();
-  //glRotatef(10, 1, 2, 1);
+  glRotatef(15, 1, 2, 1);
   /*glRotatef(5*angle, 0, -1, 2);
   glRotatef(7*angle, 2, -1, 0);
   glRotatef(11*angle, 2, -1, 2);*/
 
-  renderer.render(level->getRooms().front().walls);
+  glLightfv(GL_LIGHT0, GL_POSITION, light);
+  //renderer.render(std::list<BSPTree::TriangleRecord>(triangles.begin(), triangles.end()));
+  renderer.render(triangles);
 
   glPopMatrix();
 }

src/Game.h

@@ -40,7 +40,9 @@ class Game {
 
   private:
     Renderer renderer;
+
     boost::shared_ptr<Level> level;
+    std::vector<BSPTree::TriangleRecord> triangles;
 
     float angle;
     int lightPos;

src/Renderer.cpp

@@ -18,8 +18,6 @@
  */
 
 #include "Renderer.h"
-#include "BSPTree.h"
-#include "gl.h"
 
 namespace Zoom {
 
@@ -37,33 +35,12 @@ void Renderer::render(const BSPTree &tree) {
 
 }
 
-void Renderer::render(const std::list<BSPTree::TriangleRecord> &triangles) {
-  glBegin(GL_TRIANGLES);
-  for(std::list<BSPTree::TriangleRecord>::const_iterator t = triangles.begin(); t != triangles.end(); ++t) {
-    renderTriangle(t->triangle);
-  }
-  glEnd();
-}
-
 void Renderer::renderTriangle(const Triangle &t) {
   glColor4fv(t.getColor().array);
 
-  if(t.getTexture() != lastTexture) {
+  if(t.getTexture() != activeTexture) {
     glEnd();
-
+    useTexture(t.getTexture());
-    if(t.getTexture()) {
-      glBindTexture(GL_TEXTURE_2D, t.getTexture());
-
-      if(!lastTexture) {
-        glEnable(GL_TEXTURE_2D);
-      }
-    }
-    else {
-      glDisable(GL_TEXTURE_2D);
-    }
-
-    lastTexture = t.getTexture();
-
     glBegin(GL_TRIANGLES);
   }
 
@@ -74,4 +51,19 @@ void Renderer::renderTriangle(const Triangle &t) {
   }
 }
 
+void Renderer::useTexture(unsigned texture) {
+  if(texture) {
+    glBindTexture(GL_TEXTURE_2D, texture);
+
+    if(activeTexture) {
+      glEnable(GL_TEXTURE_2D);
+    }
+  }
+  else {
+    glDisable(GL_TEXTURE_2D);
+  }
+
+  activeTexture = texture;
+}
+
 }

src/Renderer.h

@@ -21,18 +21,40 @@
 #define ZOOM_RENDERER_H_
 
 #include "BSPTree.h"
+#include "gl.h"
 
 namespace Zoom {
 
 class Renderer {
   public:
-    Renderer() : lastTexture(0), renderVisitor(this) {}
+    Renderer() : activeTexture(0), renderVisitor(this) {}
 
     void render(const BSPTree &tree);
-    void render(const std::list<BSPTree::TriangleRecord> &triangles);
+
+    template <typename T>
+    void render(const T &triangles) {
+      typename T::const_iterator t = triangles.begin();
+      if(t == triangles.end())
+        return;
+
+      useTexture(t->triangle.getTexture());
+
+      glBegin(GL_TRIANGLES);
+      for(; t != triangles.end(); ++t) {
+        renderTriangle(t->triangle);
+      }
+      glEnd();
+    }
+
+    struct TextureSorter {
+      bool operator() (const BSPTree::TriangleRecord &t1, const BSPTree::TriangleRecord &t2) {
+        return (t1.triangle.getTexture() < t2.triangle.getTexture());
+      }
+    };
 
   private:
     void renderTriangle(const Triangle &t);
+    void useTexture(unsigned texture);
 
     class RenderVisitor {
       public:
@@ -46,7 +68,7 @@ class Renderer {
         Renderer *renderer;
     };
 
-    unsigned lastTexture;
+    unsigned activeTexture;
 
     const RenderVisitor renderVisitor;
 };