Merge pull request #302 from zhukaixy/texturecube

1: update cube texture for sky box

cocos/3d/CCSkybox.cpp

@@ -33,6 +33,8 @@
 #include "3d/CCSkybox.h"
 #include "3d/CCTextureCube.h"
 
+#include "2d/CCCamera.h"
+
 NS_CC_BEGIN
 
 Skybox::Skybox()
@@ -150,19 +152,32 @@ void Skybox::draw(Renderer* renderer, const Mat4& transform, uint32_t flags)
 
 void Skybox::onDraw(const Mat4& transform, uint32_t flags)
 {
+    Mat4 trans(transform);
+    const cocos2d::Vec3 pos(Camera::getVisitingCamera()->getPosition3D());
+    trans.m[12] = pos.x;
+    trans.m[13] = pos.y;
+    trans.m[14] = pos.z;
+
     auto state = getGLProgramState();
-    state->apply(transform);
-    
+    state->apply(trans);
+
     Vec4 color(_displayedColor.r / 255.f, _displayedColor.g / 255.f, _displayedColor.b / 255.f, 1.f);
     state->setUniformVec4("u_color", color);
 
-    GLboolean   depthFlag = glIsEnabled(GL_DEPTH_TEST);
-    GLint       depthFunc;
+    GLboolean depthFlag = glIsEnabled(GL_DEPTH_TEST);
+    GLint depthFunc;
     glGetIntegerv(GL_DEPTH_FUNC, &depthFunc);
 
     glEnable(GL_DEPTH_TEST);
     glDepthFunc(GL_LEQUAL);
 
+    GLboolean cullFlag = glIsEnabled(GL_CULL_FACE);
+    GLint cullMode;
+    glGetIntegerv(GL_CULL_FACE_MODE, &cullMode);
+
+    glEnable(GL_CULL_FACE);
+    glCullFace(GL_BACK);
+
     if (Configuration::getInstance()->supportsShareableVAO())
     {
         GL::bindVAO(_vao);
@@ -191,6 +206,10 @@ void Skybox::onDraw(const Mat4& transform, uint32_t flags)
 
     CC_INCREMENT_GL_DRAWN_BATCHES_AND_VERTICES(1, 8);
 
+    glCullFace(cullMode);
+    if (!cullFlag)
+        glDisable(GL_CULL_FACE);
+
     glDepthFunc(depthFunc);
     if (!depthFlag)
         glDisable(GL_DEPTH_TEST);

cocos/renderer/ccShader_3D_Skybox.vert

@@ -1,18 +1,11 @@
 const char* cc3D_Skybox_vert = STRINGIFY(
 
-attribute vec4 a_position;
+attribute vec3 a_position;
 varying vec3 v_reflect;
 
 void main(void)
 {
-    mat4 MVMatrixLimited = CC_MVMatrix;
-    MVMatrixLimited[0][3] = 0.0;
-    MVMatrixLimited[1][3] = 0.0;
-    MVMatrixLimited[2][3] = 0.0;
-
-    vec4 position = MVMatrixLimited* a_position;
-
-    v_reflect = a_position.xyz;
-    gl_Position = position.xyww;
+    v_reflect   =  normalize(CC_NormalMatrix * a_position);
+    gl_Position = CC_MVPMatrix * vec4(a_position, 1.0);
 }
 );

tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.cpp

@@ -2373,9 +2373,14 @@ std::string Sprite3DCubeMapTest::subtitle() const
 void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
 {
     Size visibleSize = Director::getInstance()->getVisibleSize();
-    auto _camera = Camera::createPerspective(60, visibleSize.width / visibleSize.height, 0.1, 200);
+    _camera = Camera::createPerspective(60, visibleSize.width / visibleSize.height, 10, 1000);
+    _camera->setPosition3D(Vec3(0.f, 0.f, 50.f));
     _camera->setCameraFlag(CameraFlag::USER1);
 
+    auto listener = EventListenerTouchAllAtOnce::create();
+    listener->onTouchesMoved = CC_CALLBACK_2(Sprite3DCubeMapTest::onTouchesMoved, this);
+    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);
+
     // create a teapot
     _teapot = Sprite3D::create("Sprite3DTest/teapot.c3b");
     _teapot->retain();
@@ -2393,8 +2398,8 @@ void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
 
     //set texture parameters
     Texture2D::TexParams tRepeatParams;
-    tRepeatParams.magFilter = GL_NEAREST;
-    tRepeatParams.minFilter = GL_NEAREST;
+    tRepeatParams.magFilter = GL_LINEAR;
+    tRepeatParams.minFilter = GL_LINEAR;
     tRepeatParams.wrapS = GL_MIRRORED_REPEAT;
     tRepeatParams.wrapT = GL_MIRRORED_REPEAT;
     _textureCube->setTexParameters(tRepeatParams);
@@ -2403,7 +2408,7 @@ void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
     state->setUniformTexture("u_cubeTex", _textureCube);
 
     _teapot->setGLProgramState(state);
-    _teapot->setPosition3D(Vec3(0, -5, -20));
+    _teapot->setPosition3D(Vec3(0, -5, 0));
     _teapot->setRotation3D(Vec3(-90, 180, 0));
 
     auto rotate_action = RotateBy::create(1.5, Vec3(0, 30, 0));
@@ -2425,8 +2430,6 @@ void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
         offset += meshattribute.attribSizeBytes;
     }
     addChild(_teapot);
-    addChild(_camera);
-    setCameraMask(2);
 
     {
         // config skybox
@@ -2435,8 +2438,13 @@ void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
 
         _skyBox->setTexture(_textureCube);
         addChild(_skyBox);
+
+        _skyBox->setScale(700.f);
     }
 
+    addChild(_camera);
+    setCameraMask(2);
+
 #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID || CC_TARGET_PLATFORM == CC_PLATFORM_WP8 || CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
     _backToForegroundListener = EventListenerCustom::create(EVENT_RENDERER_RECREATED,
                                 [this](EventCustom*)
@@ -2464,3 +2472,17 @@ void Sprite3DCubeMapTest::addNewSpriteWithCoords(Vec2 p)
     Director::getInstance()->getEventDispatcher()->addEventListenerWithFixedPriority(_backToForegroundListener, 1);
 #endif
 }
+
+void Sprite3DCubeMapTest::onTouchesMoved(const std::vector<Touch*>& touches, cocos2d::Event  *event)
+{
+    if (touches.size())
+    {
+        auto touch = touches[0];
+        auto delta = touch->getDelta();
+
+        static float _angle = 0.f;
+        _angle -= CC_DEGREES_TO_RADIANS(delta.x);
+        _camera->setPosition3D(Vec3(50.0f * sinf(_angle), 0.0f, 50.0f * cosf(_angle)));
+        _camera->lookAt(Vec3(0.0f, 0.0f, 0.0f), Vec3(0.0f, 1.0f, 0.0f));
+    }
+}

tests/cpp-tests/Classes/Sprite3DTest/Sprite3DTest.h

@@ -514,10 +514,13 @@ public:
 
     void addNewSpriteWithCoords(Vec2);
 
+    void onTouchesMoved(const std::vector<Touch*>& touches, cocos2d::Event  *event);
+
 protected:
-    cocos2d::TextureCube*   _textureCube;
-    Skybox*                 _skyBox;
-    Sprite3D*               _teapot;
+    cocos2d::TextureCube* _textureCube;
+    Skybox* _skyBox;
+    Sprite3D* _teapot;
+    cocos2d::Camera *_camera;
 
 #if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID || CC_TARGET_PLATFORM == CC_PLATFORM_WP8 || CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
     EventListenerCustom* _backToForegroundListener;