Added KRSkyBox as new KRNode instance

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4078

KREngine/KREngine.xcodeproj/project.pbxproj

@@ -7,6 +7,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		1000469D15E6EF550053B072 /* KRSkyBox.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 1000469B15E6EF550053B072 /* KRSkyBox.cpp */; };
+		1000469E15E6EF550053B072 /* KRSkyBox.h in Headers */ = {isa = PBXBuildFile; fileRef = 1000469C15E6EF550053B072 /* KRSkyBox.h */; };
 		E414BAE21435557300A668C4 /* KRInstance.h in Headers */ = {isa = PBXBuildFile; fileRef = E414BAE11435557300A668C4 /* KRInstance.h */; };
 		E414BAE51435558900A668C4 /* KRInstance.cpp in Sources */ = {isa = PBXBuildFile; fileRef = E414BAE41435558800A668C4 /* KRInstance.cpp */; };
 		E414BAE7143557D200A668C4 /* KRScene.h in Headers */ = {isa = PBXBuildFile; fileRef = E414BAE6143557D200A668C4 /* KRScene.h */; };
@@ -159,6 +161,8 @@
 /* End PBXBuildRule section */
 
 /* Begin PBXFileReference section */
+		1000469B15E6EF550053B072 /* KRSkyBox.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = KRSkyBox.cpp; path = Classes/KRSkyBox.cpp; sourceTree = "<group>"; };
+		1000469C15E6EF550053B072 /* KRSkyBox.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = KRSkyBox.h; path = Classes/KRSkyBox.h; sourceTree = "<group>"; };
 		E414BAE11435557300A668C4 /* KRInstance.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; name = KRInstance.h; path = Classes/KRInstance.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
 		E414BAE41435558800A668C4 /* KRInstance.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; lineEnding = 0; name = KRInstance.cpp; path = Classes/KRInstance.cpp; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.cpp; };
 		E414BAE6143557D200A668C4 /* KRScene.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; lineEnding = 0; name = KRScene.h; path = Classes/KRScene.h; sourceTree = "<group>"; xcLanguageSpecificationIdentifier = xcode.lang.objcpp; };
@@ -392,6 +396,8 @@
 				E4F975351536221C00FD60B2 /* KRNode.cpp */,
 				E414BAE6143557D200A668C4 /* KRScene.h */,
 				E414BAE81435585A00A668C4 /* KRScene.cpp */,
+				1000469C15E6EF550053B072 /* KRSkyBox.h */,
+				1000469B15E6EF550053B072 /* KRSkyBox.cpp */,
 			);
 			name = "Scene Graph";
 			sourceTree = "<group>";
@@ -562,6 +568,7 @@
 				E42CB1EC158446940066E0D8 /* KRQuaternion.h in Headers */,
 				E43B0ACB15DDBB8500A5CB9F /* KRNotified.h in Headers */,
 				E43B0AD815DDCA0F00A5CB9F /* KRContextObject.h in Headers */,
+				1000469E15E6EF550053B072 /* KRSkyBox.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -720,6 +727,7 @@
 				E42CB1F0158446AB0066E0D8 /* KRQuaternion.cpp in Sources */,
 				E43B0AC915DDBB8500A5CB9F /* KRNotified.cpp in Sources */,
 				E43B0AD615DDCA0F00A5CB9F /* KRContextObject.cpp in Sources */,
+				1000469D15E6EF550053B072 /* KRSkyBox.cpp in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

KREngine/KREngine/Classes/KRNode.h

@@ -32,7 +32,8 @@ public:
         RENDER_PASS_DEFERRED_OPAQUE,
         RENDER_PASS_FORWARD_TRANSPARENT,
         RENDER_PASS_FLARES,
-        RENDER_PASS_SHADOWMAP
+        RENDER_PASS_SHADOWMAP,
+        RENDER_PASS_SKYBOX
     };
     
     KRNode(KRContext &context, std::string name);

KREngine/KREngine/Classes/KRSkyBox.cpp

@@ -0,0 +1,70 @@
+//
+//  KRSkyBox.cpp
+//  KREngine
+//
+//  Created by Michael Ilich on 2012-08-23.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#include <iostream>
+
+#include "KRSkyBox.h"
+#import "KRShader.h"
+#import "KRContext.h"
+#import "KRMat4.h"
+#import "KRResource.h"
+
+KRSkyBox::KRSkyBox(KRContext &context, std::string name) : KRNode(context, name)
+{
+
+}
+
+KRSkyBox::~KRSkyBox()
+{
+    
+}
+
+std::string KRSkyBox::getElementName() {
+    return "sky_box";
+}
+
+#if TARGET_OS_IPHONE
+
+void KRSkyBox::render(KRCamera *pCamera, KRContext *pContext, KRBoundingVolume &frustrumVolume, KRMat4 &viewMatrix, KRVector3 &cameraPosition, KRNode::RenderPass renderPass) {
+    
+    if(renderPass == KRNode::RENDER_PASS_SKYBOX) {
+        // Skybox is rendered on the final pass of the deferred renderer
+        
+        KRMat4 projectionMatrix = pCamera->getProjectionMatrix();
+        
+        KRMat4 mvpmatrix = m_modelMatrix * viewMatrix * projectionMatrix;
+        KRMat4 matModelToView = viewMatrix * m_modelMatrix;
+        matModelToView.transpose();
+        matModelToView.invert();
+                
+        KRShader *pShader = pContext->getShaderManager()->getShader("sky_box", pCamera, false, false, false, 0, false, false, false, false, false, false, false, false, renderPass);
+        
+        pShader->bind(pCamera, matModelToView, mvpmatrix, cameraPosition, NULL, NULL, NULL, 0, renderPass);
+        
+        // Disable z-buffer write
+        glDepthMask(GL_FALSE);
+        
+        // Disable z-buffer test
+        glDisable(GL_DEPTH_TEST);
+        
+        // Render a full screen quad
+        static const GLfloat squareVertices[] = {
+            -1.0f, -1.0f,
+            1.0f, -1.0f,
+            -1.0f,  1.0f,
+            1.0f,  1.0f,
+        };
+        
+        glBindBuffer(GL_ARRAY_BUFFER, 0);
+        glVertexAttribPointer(KRShader::KRENGINE_ATTRIB_VERTEX, 2, GL_FLOAT, 0, 0, squareVertices);
+        glEnableVertexAttribArray(KRShader::KRENGINE_ATTRIB_VERTEX);
+        glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+    }
+}
+
+#endif

KREngine/KREngine/Classes/KRSkyBox.h

@@ -0,0 +1,35 @@
+//
+//  KRSkyBox.h
+//  KREngine
+//
+//  Created by Michael Ilich on 2012-08-23.
+//  Copyright (c) 2012 Kearwood Software. All rights reserved.
+//
+
+#ifndef __KREngine__KRSkyBox__
+#define __KREngine__KRSkyBox__
+
+#include <iostream>
+#import "KRMat4.h"
+#import "KRNode.h"
+
+class KRSkyBox : public KRNode {
+    
+public:
+    
+    KRSkyBox(KRContext &context, std::string name);
+    virtual ~KRSkyBox();
+    
+    virtual std::string getElementName();
+    
+#if TARGET_OS_IPHONE
+    
+    virtual void render(KRCamera *pCamera, KRContext *pContext, KRBoundingVolume &frustrumVolume, KRMat4 &viewMatrix, KRVector3 &cameraPosition, KRNode::RenderPass renderPass);
+#endif
+    
+private:
+    KRMat4 m_modelMatrix;
+};
+
+
+#endif