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@ -5,6 +5,8 @@
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#include <OgreSceneNode.h>
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#include <OgreSceneManager.h>
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#include <OgreCamera.h>
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#include <OgreHardwareVertexBuffer.h>
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#include <OgreHighLevelGpuProgramManager.h>
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#include <components/nifogre/ogre_nif_loader.hpp>
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@ -42,25 +44,123 @@ namespace MWRender
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private:
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Camera* mCamera;
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Viewport* mViewport;
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SceneNode* mRootNode;
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SceneManager* mSceneMgr;
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MaterialPtr mCloudMaterial;
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MaterialPtr mAtmosphereMaterial;
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HighLevelGpuProgramPtr mCloudFragmentShader;
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void ModVertexAlpha(Entity* ent, unsigned int meshType);
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};
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void MWSkyManager::ModVertexAlpha(Entity* ent, unsigned int meshType)
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{
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// Get the vertex colour buffer of this mesh
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VertexDeclaration* dec = ent->getMesh()->getSubMesh(0)->vertexData->vertexDeclaration;
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const Ogre::VertexElement* ves_diffuse = ent->getMesh()->getSubMesh(0)->vertexData->vertexDeclaration->findElementBySemantic( Ogre::VES_DIFFUSE );
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HardwareVertexBufferSharedPtr colourBuffer = ent->getMesh()->getSubMesh(0)->vertexData->vertexBufferBinding->getBuffer(ves_diffuse->getSource());
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// Lock
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void* pData = colourBuffer->lock(HardwareBuffer::HBL_NORMAL);
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// Iterate over all vertices
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int vertex_size = colourBuffer->getVertexSize();
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float * currentVertex = NULL;
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for (int i=0; i<colourBuffer->getNumVertices(); ++i)
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{
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// Get a pointer to the vertex colour
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ves_diffuse->baseVertexPointerToElement( pData, ¤tVertex );
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unsigned char alpha;
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if (meshType == 0) alpha = i%2 ? 0 : 255; // this is a cylinder, so every second vertex belongs to the bottom-most row
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else if (meshType == 1)
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{
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if (i>= 49 && i <= 64) alpha = 0; // bottom-most row
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else if (i>= 33 && i <= 48) alpha = 64; // second bottom-most row
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else alpha = 255;
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}
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uint8 tmpR = static_cast<uint8>(255);
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uint8 tmpG = static_cast<uint8>(255);
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uint8 tmpB = static_cast<uint8>(255);
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uint8 tmpA = static_cast<uint8>(alpha);
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// This does not matter since R and B are always 1.
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/*VertexElementType format = Root::getSingleton().getRenderSystem()->getColourVertexElementType();
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switch (format)
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{
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case VET_COLOUR_ARGB:
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std::swap(tmpR, tmpB);
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break;
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case VET_COLOUR_ABGR:
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break;
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default:
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break;
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}*/
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// Modify
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*((uint32*)currentVertex) = tmpR | (tmpG << 8) | (tmpB << 16) | (tmpA << 24);
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// Move to the next vertex
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pData+=vertex_size;
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}
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// Unlock
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ent->getMesh()->getSubMesh(0)->vertexData->vertexBufferBinding->getBuffer(ves_diffuse->getSource())->unlock();
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}
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MWSkyManager::MWSkyManager (SceneNode* pMwRoot, Camera* pCamera)
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{
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mViewport = pCamera->getViewport();
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mSceneMgr = pMwRoot->getCreator();
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mRootNode = pMwRoot->createChildSceneNode();
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mRootNode->setScale(100.f, 100.f, 100.f);
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mViewport->setBackgroundColour(ColourValue(0.87, 0.87, 0.87));
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HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton();
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// Atmosphere
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NifOgre::NIFLoader::load("meshes\\sky_atmosphere.nif");
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MeshPtr mesh = NifOgre::NIFLoader::load("meshes\\sky_atmosphere.nif");
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Entity* atmosphere_ent = mSceneMgr->createEntity("meshes\\sky_atmosphere.nif");
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ModVertexAlpha(atmosphere_ent, 0);
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atmosphere_ent->setRenderQueueGroup(RENDER_QUEUE_SKIES_EARLY);
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Ogre::SceneNode* atmosphere_node = mRootNode->createChildSceneNode();
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atmosphere_node->attachObject(atmosphere_ent);
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mAtmosphereMaterial = atmosphere_ent->getSubEntity(0)->getMaterial();
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// Atmosphere shader
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HighLevelGpuProgramPtr vshader = mgr.createProgram("Atmosphere_VP", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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"cg", GPT_VERTEX_PROGRAM);
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vshader->setParameter("profiles", "vs_2_x arbvp1");
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vshader->setParameter("entry_point", "main_vp");
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StringUtil::StrStreamType outStream;
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outStream <<
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"void main_vp( \n"
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" float4 position : POSITION, \n"
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" in float4 color : COLOR, \n"
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" out float4 oPosition : POSITION, \n"
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" out float4 oColor : COLOR, \n"
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" uniform float4 emissive, \n"
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" uniform float4x4 worldViewProj \n"
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") \n"
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"{ \n"
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" oPosition = mul( worldViewProj, position ); \n"
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" oColor = color * emissive; \n"
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"}";
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vshader->setSource(outStream.str());
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vshader->load();
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vshader->getDefaultParameters()->setNamedAutoConstant("worldViewProj", GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
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vshader->getDefaultParameters()->setNamedAutoConstant("emissive", GpuProgramParameters::ACT_SURFACE_EMISSIVE_COLOUR);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setVertexProgram(vshader->getName());
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// Clouds
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NifOgre::NIFLoader::load("meshes\\sky_clouds_01.nif");
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@ -70,6 +170,60 @@ namespace MWRender
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clouds_node->attachObject(clouds_ent);
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mCloudMaterial = clouds_ent->getSubEntity(0)->getMaterial();
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// Clouds vertex shader
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HighLevelGpuProgramPtr vshader2 = mgr.createProgram("Clouds_VP", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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"cg", GPT_VERTEX_PROGRAM);
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vshader2->setParameter("profiles", "vs_2_x arbvp1");
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vshader2->setParameter("entry_point", "main_vp");
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StringUtil::StrStreamType outStream3;
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outStream3 <<
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"void main_vp( \n"
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" float4 position : POSITION, \n"
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" in float4 color : COLOR, \n"
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" out float4 oColor : TEXCOORD1, \n"
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" in float2 uv : TEXCOORD0, \n"
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" out float2 oUV : TEXCOORD0, \n"
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" out float4 oPosition : POSITION, \n"
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" uniform float4x4 worldViewProj \n"
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") \n"
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"{ \n"
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" oUV = uv; \n"
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" oColor = color; \n"
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" oPosition = mul( worldViewProj, position ); \n"
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"}";
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vshader2->setSource(outStream3.str());
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vshader2->load();
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vshader2->getDefaultParameters()->setNamedAutoConstant("worldViewProj", GpuProgramParameters::ACT_WORLDVIEWPROJ_MATRIX);
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mCloudMaterial->getTechnique(0)->getPass(0)->setVertexProgram(vshader2->getName());
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// Clouds fragment shader
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mCloudFragmentShader = mgr.createProgram("Clouds_FP", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
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"cg", GPT_FRAGMENT_PROGRAM);
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mCloudFragmentShader->setParameter("profiles", "ps_2_x arbfp1");
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mCloudFragmentShader->setParameter("entry_point", "main_fp");
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StringUtil::StrStreamType outStream2;
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outStream2 <<
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"void main_fp( \n"
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" in float2 uv : TEXCOORD0, \n"
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" out float4 oColor : COLOR, \n"
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" in float4 color : TEXCOORD1, \n"
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" uniform sampler2D texture : TEXUNIT0, \n"
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" uniform float time, \n"
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" uniform float4 emissive \n"
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") \n"
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"{ \n"
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" uv += float2(1,1) * time * 0.01; \n" // Scroll in x,y direction
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" float4 tex = tex2D(texture, uv); \n"
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" clip(tex.a<0.5); \n"
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" oColor = color * float4(emissive.xyz,1) * tex2D(texture, uv); \n"
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"}";
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mCloudFragmentShader->setSource(outStream2.str());
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mCloudFragmentShader->load();
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mCloudFragmentShader->getDefaultParameters()->setNamedAutoConstant("emissive", GpuProgramParameters::ACT_SURFACE_EMISSIVE_COLOUR);
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mCloudMaterial->getTechnique(0)->getPass(0)->setFragmentProgram(mCloudFragmentShader->getName());
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ModVertexAlpha(clouds_ent, 1);
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// Sun
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/// \todo calculate the sun position based on time of day
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Vector3 sunPosition(0, 0, 1.f);
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@ -107,18 +261,20 @@ namespace MWRender
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atmosphere_ent->getSubEntity(0)->setMaterial(mAtmosphereMaterial);
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// Default atmosphere color: light blue
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setAmbient(0.235, 0.5, 0.73);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setDiffuse(0.0, 0.0, 0.0, 1.0);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setSelfIllumination(0.235, 0.5, 0.73);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setDiffuse(0.0, 0.0, 0.0, 0.0);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setAmbient(0.0, 0.0, 0.0);
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// Set up an UV scroll animation to move the clouds
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mCloudMaterial->getTechnique(0)->getPass(0)->getTextureUnitState(0)->setScrollAnimation(0.01f, 0.01f);
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mCloudMaterial->getTechnique(0)->getPass(0)->setSelfIllumination(1.0, 1.0, 1.0);
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// Disable depth writing so that the sky does not cover any objects
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mCloudMaterial->getTechnique(0)->getPass(0)->setDepthWriteEnabled(false);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setDepthWriteEnabled(false);
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// Alpha-blend the clouds with the atmosphere
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//mAtmosphereMaterial->getTechnique(0)->getPass(0)->setDepthWriteEnabled(false);
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mAtmosphereMaterial->getTechnique(0)->getPass(0)->setSceneBlending(SBT_TRANSPARENT_ALPHA);
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mCloudMaterial->getTechnique(0)->getPass(0)->setSceneBlending(SBT_TRANSPARENT_ALPHA);
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mCamera = pCamera;
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mCamera->setFarClipDistance(50000.f);
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mCamera->setFarClipDistance(500000.f);
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}
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MWSkyManager::~MWSkyManager()
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{
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@ -129,6 +285,9 @@ namespace MWRender
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// Sync the position of the skydomes with the camera
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/// \todo for some reason this is 1 frame delayed, which causes the skydome move funnily when the camera moves
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mRootNode->_setDerivedPosition(mCamera->getParentSceneNode()->_getDerivedPosition());
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// UV Scroll the clouds
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mCloudMaterial->getTechnique(0)->getPass(0)->getFragmentProgramParameters()->setNamedConstantFromTime("time", 1);
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}
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void MWSkyManager::enable()
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@ -237,12 +396,12 @@ namespace MWRender
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{
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SkyManager* pSkyManager = NULL;
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try
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{
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//try
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//{
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//pSkyManager = new CaelumManager(pRenderWindow, pCamera, resDir);
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pSkyManager = new MWSkyManager(pMwRoot, pCamera);
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}
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catch (Ogre::Exception& e)
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//}
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/*catch (Ogre::Exception& e)
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{
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std::cout << "\nOGRE Exception when attempting to add sky: "
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<< e.getFullDescription().c_str() << std::endl;
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@ -251,7 +410,7 @@ namespace MWRender
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{
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std::cout << "\nException when attempting to add sky: "
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<< e.what() << std::endl;
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}
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}*/
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return pSkyManager;
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}
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scrawl
13 years ago