From f34b2c73c5f81f15a02ee9a4fe878ff005ff4e37 Mon Sep 17 00:00:00 2001 From: scrawl Date: Mon, 27 Feb 2012 19:44:52 +0100 Subject: [PATCH] committing the terrain material generator from ogre 1.7.4, it seems to be almost impossible to make a derived class of TerrainMaterialGeneratorA because of the many classes it contains and the inter-relationships between them; just adding the whole source makes it a lot easier to modify if we decide to update this source from OGRE upstream at any point (which seems unlikely), we can take the diff from this commit on to see the changes we did to the material generator --- apps/openmw/CMakeLists.txt | 2 +- apps/openmw/mwrender/terrain.cpp | 18 +- apps/openmw/mwrender/terrainmaterial.cpp | 1656 ++++++++++++++++++++++ apps/openmw/mwrender/terrainmaterial.hpp | 261 ++++ 4 files changed, 1932 insertions(+), 5 deletions(-) create mode 100644 apps/openmw/mwrender/terrainmaterial.cpp create mode 100644 apps/openmw/mwrender/terrainmaterial.hpp diff --git a/apps/openmw/CMakeLists.txt b/apps/openmw/CMakeLists.txt index 663a10787d..8ee865a0bf 100644 --- a/apps/openmw/CMakeLists.txt +++ b/apps/openmw/CMakeLists.txt @@ -16,7 +16,7 @@ set(GAME_HEADER source_group(game FILES ${GAME} ${GAME_HEADER}) add_openmw_dir (mwrender - renderingmanager debugging sky terrain player npcs creatures objects renderinginterface + renderingmanager debugging sky terrain terrainmaterial player npcs creatures objects renderinginterface ) add_openmw_dir (mwinput diff --git a/apps/openmw/mwrender/terrain.cpp b/apps/openmw/mwrender/terrain.cpp index 70ecdee73d..568ed37415 100644 --- a/apps/openmw/mwrender/terrain.cpp +++ b/apps/openmw/mwrender/terrain.cpp @@ -1,11 +1,13 @@ #include #include -#include +#include "terrainmaterial.hpp" #include "terrain.hpp" #include "components/esm/loadland.hpp" +using namespace Ogre; + namespace MWRender { @@ -18,15 +20,23 @@ namespace MWRender mTerrainGlobals->setMaxPixelError(8); mTerrainGlobals->setLayerBlendMapSize(SPLIT_TERRAIN ? 1024 : 256); + Ogre::TerrainMaterialGeneratorPtr matGen; + TerrainMaterialGeneratorB* matGenP = new TerrainMaterialGeneratorB(); + matGen.bind(matGenP); + mTerrainGlobals->setDefaultMaterialGenerator(matGen); + Ogre::TerrainMaterialGenerator::Profile* const activeProfile = mTerrainGlobals->getDefaultMaterialGenerator() ->getActiveProfile(); - Ogre::TerrainMaterialGeneratorA::SM2Profile* matProfile = - static_cast(activeProfile); + TerrainMaterialGeneratorB::SM2Profile* matProfile = + static_cast(activeProfile); matProfile->setLightmapEnabled(false); matProfile->setReceiveDynamicShadowsEnabled(false); - + matProfile->setLayerNormalMappingEnabled(false); + //matProfile->setLayerParallaxMappingEnabled(false); + matProfile->setLayerSpecularMappingEnabled(false); + mLandSize = ESM::Land::LAND_SIZE; mRealSize = ESM::Land::REAL_SIZE; if ( SPLIT_TERRAIN ) diff --git a/apps/openmw/mwrender/terrainmaterial.cpp b/apps/openmw/mwrender/terrainmaterial.cpp new file mode 100644 index 0000000000..313a4a90cf --- /dev/null +++ b/apps/openmw/mwrender/terrainmaterial.cpp @@ -0,0 +1,1656 @@ +/* +----------------------------------------------------------------------------- +This source file is part of OGRE +(Object-oriented Graphics Rendering Engine) +For the latest info, see http://www.ogre3d.org/ + +Copyright (c) 2000-2011 Torus Knot Software Ltd + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +----------------------------------------------------------------------------- +*/ +#include "terrainmaterial.hpp" +#include "OgreTerrain.h" +#include "OgreMaterialManager.h" +#include "OgreTechnique.h" +#include "OgrePass.h" +#include "OgreTextureUnitState.h" +#include "OgreGpuProgramManager.h" +#include "OgreHighLevelGpuProgramManager.h" +#include "OgreHardwarePixelBuffer.h" +#include "OgreShadowCameraSetupPSSM.h" + +namespace Ogre +{ + //--------------------------------------------------------------------- + TerrainMaterialGeneratorB::TerrainMaterialGeneratorB() + { + // define the layers + // We expect terrain textures to have no alpha, so we use the alpha channel + // in the albedo texture to store specular reflection + // similarly we double-up the normal and height (for parallax) + mLayerDecl.samplers.push_back(TerrainLayerSampler("albedo_specular", PF_BYTE_RGBA)); + mLayerDecl.samplers.push_back(TerrainLayerSampler("normal_height", PF_BYTE_RGBA)); + + mLayerDecl.elements.push_back( + TerrainLayerSamplerElement(0, TLSS_ALBEDO, 0, 3)); + mLayerDecl.elements.push_back( + TerrainLayerSamplerElement(0, TLSS_SPECULAR, 3, 1)); + mLayerDecl.elements.push_back( + TerrainLayerSamplerElement(1, TLSS_NORMAL, 0, 3)); + mLayerDecl.elements.push_back( + TerrainLayerSamplerElement(1, TLSS_HEIGHT, 3, 1)); + + + mProfiles.push_back(OGRE_NEW SM2Profile(this, "SM2", "Profile for rendering on Shader Model 2 capable cards")); + // TODO - check hardware capabilities & use fallbacks if required (more profiles needed) + setActiveProfile("SM2"); + + } + //--------------------------------------------------------------------- + TerrainMaterialGeneratorB::~TerrainMaterialGeneratorB() + { + + } + //--------------------------------------------------------------------- + //--------------------------------------------------------------------- + TerrainMaterialGeneratorB::SM2Profile::SM2Profile(TerrainMaterialGenerator* parent, const String& name, const String& desc) + : Profile(parent, name, desc) + , mShaderGen(0) + , mLayerNormalMappingEnabled(true) + , mLayerParallaxMappingEnabled(true) + , mLayerSpecularMappingEnabled(true) + , mGlobalColourMapEnabled(true) + , mLightmapEnabled(true) + , mCompositeMapEnabled(true) + , mReceiveDynamicShadows(true) + , mPSSM(0) + , mDepthShadows(false) + , mLowLodShadows(false) + { + + } + //--------------------------------------------------------------------- + TerrainMaterialGeneratorB::SM2Profile::~SM2Profile() + { + OGRE_DELETE mShaderGen; + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::requestOptions(Terrain* terrain) + { + terrain->_setMorphRequired(true); + terrain->_setNormalMapRequired(true); + terrain->_setLightMapRequired(mLightmapEnabled, true); + terrain->_setCompositeMapRequired(mCompositeMapEnabled); + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setLayerNormalMappingEnabled(bool enabled) + { + if (enabled != mLayerNormalMappingEnabled) + { + mLayerNormalMappingEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setLayerParallaxMappingEnabled(bool enabled) + { + if (enabled != mLayerParallaxMappingEnabled) + { + mLayerParallaxMappingEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setLayerSpecularMappingEnabled(bool enabled) + { + if (enabled != mLayerSpecularMappingEnabled) + { + mLayerSpecularMappingEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setGlobalColourMapEnabled(bool enabled) + { + if (enabled != mGlobalColourMapEnabled) + { + mGlobalColourMapEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setLightmapEnabled(bool enabled) + { + if (enabled != mLightmapEnabled) + { + mLightmapEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setCompositeMapEnabled(bool enabled) + { + if (enabled != mCompositeMapEnabled) + { + mCompositeMapEnabled = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setReceiveDynamicShadowsEnabled(bool enabled) + { + if (enabled != mReceiveDynamicShadows) + { + mReceiveDynamicShadows = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setReceiveDynamicShadowsPSSM(PSSMShadowCameraSetup* pssmSettings) + { + if (pssmSettings != mPSSM) + { + mPSSM = pssmSettings; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setReceiveDynamicShadowsDepth(bool enabled) + { + if (enabled != mDepthShadows) + { + mDepthShadows = enabled; + mParent->_markChanged(); + } + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::setReceiveDynamicShadowsLowLod(bool enabled) + { + if (enabled != mLowLodShadows) + { + mLowLodShadows = enabled; + mParent->_markChanged(); + } + } + //--------------------------------------------------------------------- + uint8 TerrainMaterialGeneratorB::SM2Profile::getMaxLayers(const Terrain* terrain) const + { + // count the texture units free + uint8 freeTextureUnits = 16; + // lightmap + --freeTextureUnits; + // normalmap + --freeTextureUnits; + // colourmap + if (terrain->getGlobalColourMapEnabled()) + --freeTextureUnits; + if (isShadowingEnabled(HIGH_LOD, terrain)) + { + uint numShadowTextures = 1; + if (getReceiveDynamicShadowsPSSM()) + { + numShadowTextures = getReceiveDynamicShadowsPSSM()->getSplitCount(); + } + freeTextureUnits -= numShadowTextures; + } + + // each layer needs 2.25 units (1xdiffusespec, 1xnormalheight, 0.25xblend) + return static_cast(freeTextureUnits / 2.25f); + + + } + //--------------------------------------------------------------------- + MaterialPtr TerrainMaterialGeneratorB::SM2Profile::generate(const Terrain* terrain) + { + // re-use old material if exists + MaterialPtr mat = terrain->_getMaterial(); + if (mat.isNull()) + { + MaterialManager& matMgr = MaterialManager::getSingleton(); + + // it's important that the names are deterministic for a given terrain, so + // use the terrain pointer as an ID + const String& matName = terrain->getMaterialName(); + mat = matMgr.getByName(matName); + if (mat.isNull()) + { + mat = matMgr.create(matName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); + } + } + // clear everything + mat->removeAllTechniques(); + + // Automatically disable normal & parallax mapping if card cannot handle it + // We do this rather than having a specific technique for it since it's simpler + GpuProgramManager& gmgr = GpuProgramManager::getSingleton(); + if (!gmgr.isSyntaxSupported("ps_3_0") && !gmgr.isSyntaxSupported("ps_2_x") + && !gmgr.isSyntaxSupported("fp40") && !gmgr.isSyntaxSupported("arbfp1")) + { + setLayerNormalMappingEnabled(false); + setLayerParallaxMappingEnabled(false); + } + + addTechnique(mat, terrain, HIGH_LOD); + + // LOD + if(mCompositeMapEnabled) + { + addTechnique(mat, terrain, LOW_LOD); + Material::LodValueList lodValues; + lodValues.push_back(TerrainGlobalOptions::getSingleton().getCompositeMapDistance()); + mat->setLodLevels(lodValues); + Technique* lowLodTechnique = mat->getTechnique(1); + lowLodTechnique->setLodIndex(1); + } + + updateParams(mat, terrain); + + return mat; + + } + //--------------------------------------------------------------------- + MaterialPtr TerrainMaterialGeneratorB::SM2Profile::generateForCompositeMap(const Terrain* terrain) + { + // re-use old material if exists + MaterialPtr mat = terrain->_getCompositeMapMaterial(); + if (mat.isNull()) + { + MaterialManager& matMgr = MaterialManager::getSingleton(); + + // it's important that the names are deterministic for a given terrain, so + // use the terrain pointer as an ID + const String& matName = terrain->getMaterialName() + "/comp"; + mat = matMgr.getByName(matName); + if (mat.isNull()) + { + mat = matMgr.create(matName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); + } + } + // clear everything + mat->removeAllTechniques(); + + addTechnique(mat, terrain, RENDER_COMPOSITE_MAP); + + updateParamsForCompositeMap(mat, terrain); + + return mat; + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::addTechnique( + const MaterialPtr& mat, const Terrain* terrain, TechniqueType tt) + { + + Technique* tech = mat->createTechnique(); + + // Only supporting one pass + Pass* pass = tech->createPass(); + + GpuProgramManager& gmgr = GpuProgramManager::getSingleton(); + HighLevelGpuProgramManager& hmgr = HighLevelGpuProgramManager::getSingleton(); + if (!mShaderGen) + { + bool check2x = mLayerNormalMappingEnabled || mLayerParallaxMappingEnabled; + if (hmgr.isLanguageSupported("cg")) + mShaderGen = OGRE_NEW ShaderHelperCg(); + else if (hmgr.isLanguageSupported("hlsl") && + ((check2x && gmgr.isSyntaxSupported("ps_2_x")) || + (!check2x && gmgr.isSyntaxSupported("ps_2_0")))) + mShaderGen = OGRE_NEW ShaderHelperHLSL(); + else if (hmgr.isLanguageSupported("glsl")) + mShaderGen = OGRE_NEW ShaderHelperGLSL(); + else + { + // todo + } + + // check SM3 features + mSM3Available = GpuProgramManager::getSingleton().isSyntaxSupported("ps_3_0"); + + } + HighLevelGpuProgramPtr vprog = mShaderGen->generateVertexProgram(this, terrain, tt); + HighLevelGpuProgramPtr fprog = mShaderGen->generateFragmentProgram(this, terrain, tt); + + pass->setVertexProgram(vprog->getName()); + pass->setFragmentProgram(fprog->getName()); + + if (tt == HIGH_LOD || tt == RENDER_COMPOSITE_MAP) + { + // global normal map + TextureUnitState* tu = pass->createTextureUnitState(); + tu->setTextureName(terrain->getTerrainNormalMap()->getName()); + tu->setTextureAddressingMode(TextureUnitState::TAM_CLAMP); + + // global colour map + if (terrain->getGlobalColourMapEnabled() && isGlobalColourMapEnabled()) + { + tu = pass->createTextureUnitState(terrain->getGlobalColourMap()->getName()); + tu->setTextureAddressingMode(TextureUnitState::TAM_CLAMP); + } + + // light map + if (isLightmapEnabled()) + { + tu = pass->createTextureUnitState(terrain->getLightmap()->getName()); + tu->setTextureAddressingMode(TextureUnitState::TAM_CLAMP); + } + + // blend maps + uint maxLayers = getMaxLayers(terrain); + uint numBlendTextures = std::min(terrain->getBlendTextureCount(maxLayers), terrain->getBlendTextureCount()); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + for (uint i = 0; i < numBlendTextures; ++i) + { + tu = pass->createTextureUnitState(terrain->getBlendTextureName(i)); + tu->setTextureAddressingMode(TextureUnitState::TAM_CLAMP); + } + + // layer textures + for (uint i = 0; i < numLayers; ++i) + { + // diffuse / specular + tu = pass->createTextureUnitState(terrain->getLayerTextureName(i, 0)); + // normal / height + tu = pass->createTextureUnitState(terrain->getLayerTextureName(i, 1)); + } + + } + else + { + // LOW_LOD textures + // composite map + TextureUnitState* tu = pass->createTextureUnitState(); + tu->setTextureName(terrain->getCompositeMap()->getName()); + tu->setTextureAddressingMode(TextureUnitState::TAM_CLAMP); + + // That's it! + + } + + // Add shadow textures (always at the end) + if (isShadowingEnabled(tt, terrain)) + { + uint numTextures = 1; + if (getReceiveDynamicShadowsPSSM()) + { + numTextures = getReceiveDynamicShadowsPSSM()->getSplitCount(); + } + for (uint i = 0; i < numTextures; ++i) + { + TextureUnitState* tu = pass->createTextureUnitState(); + tu->setContentType(TextureUnitState::CONTENT_SHADOW); + tu->setTextureAddressingMode(TextureUnitState::TAM_BORDER); + tu->setTextureBorderColour(ColourValue::White); + } + } + + } + //--------------------------------------------------------------------- + bool TerrainMaterialGeneratorB::SM2Profile::isShadowingEnabled(TechniqueType tt, const Terrain* terrain) const + { + return getReceiveDynamicShadowsEnabled() && tt != RENDER_COMPOSITE_MAP && + (tt != LOW_LOD || mLowLodShadows) && + terrain->getSceneManager()->isShadowTechniqueTextureBased(); + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::updateParams(const MaterialPtr& mat, const Terrain* terrain) + { + mShaderGen->updateParams(this, mat, terrain, false); + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::updateParamsForCompositeMap(const MaterialPtr& mat, const Terrain* terrain) + { + mShaderGen->updateParams(this, mat, terrain, true); + } + //--------------------------------------------------------------------- + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::generateVertexProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramPtr ret = createVertexProgram(prof, terrain, tt); + + StringUtil::StrStreamType sourceStr; + generateVertexProgramSource(prof, terrain, tt, sourceStr); + ret->setSource(sourceStr.str()); + ret->load(); + defaultVpParams(prof, terrain, tt, ret); +#if OGRE_DEBUG_MODE + LogManager::getSingleton().stream(LML_TRIVIAL) << "*** Terrain Vertex Program: " + << ret->getName() << " ***\n" << ret->getSource() << "\n*** ***"; +#endif + + return ret; + + } + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::generateFragmentProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramPtr ret = createFragmentProgram(prof, terrain, tt); + + StringUtil::StrStreamType sourceStr; + generateFragmentProgramSource(prof, terrain, tt, sourceStr); + ret->setSource(sourceStr.str()); + ret->load(); + defaultFpParams(prof, terrain, tt, ret); + +#if OGRE_DEBUG_MODE + LogManager::getSingleton().stream(LML_TRIVIAL) << "*** Terrain Fragment Program: " + << ret->getName() << " ***\n" << ret->getSource() << "\n*** ***"; +#endif + + return ret; + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::generateVertexProgramSource( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + generateVpHeader(prof, terrain, tt, outStream); + + if (tt != LOW_LOD) + { + uint maxLayers = prof->getMaxLayers(terrain); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + + for (uint i = 0; i < numLayers; ++i) + generateVpLayer(prof, terrain, tt, i, outStream); + } + + generateVpFooter(prof, terrain, tt, outStream); + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::generateFragmentProgramSource( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + generateFpHeader(prof, terrain, tt, outStream); + + if (tt != LOW_LOD) + { + uint maxLayers = prof->getMaxLayers(terrain); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + + for (uint i = 0; i < numLayers; ++i) + generateFpLayer(prof, terrain, tt, i, outStream); + } + + generateFpFooter(prof, terrain, tt, outStream); + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::defaultVpParams( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const HighLevelGpuProgramPtr& prog) + { + GpuProgramParametersSharedPtr params = prog->getDefaultParameters(); + params->setIgnoreMissingParams(true); + params->setNamedAutoConstant("worldMatrix", GpuProgramParameters::ACT_WORLD_MATRIX); + params->setNamedAutoConstant("viewProjMatrix", GpuProgramParameters::ACT_VIEWPROJ_MATRIX); + params->setNamedAutoConstant("lodMorph", GpuProgramParameters::ACT_CUSTOM, + Terrain::LOD_MORPH_CUSTOM_PARAM); + params->setNamedAutoConstant("fogParams", GpuProgramParameters::ACT_FOG_PARAMS); + + if (prof->isShadowingEnabled(tt, terrain)) + { + uint numTextures = 1; + if (prof->getReceiveDynamicShadowsPSSM()) + { + numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + } + for (uint i = 0; i < numTextures; ++i) + { + params->setNamedAutoConstant("texViewProjMatrix" + StringConverter::toString(i), + GpuProgramParameters::ACT_TEXTURE_VIEWPROJ_MATRIX, i); + if (prof->getReceiveDynamicShadowsDepth()) + { + params->setNamedAutoConstant("depthRange" + StringConverter::toString(i), + GpuProgramParameters::ACT_SHADOW_SCENE_DEPTH_RANGE, i); + } + } + } + + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::defaultFpParams( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const HighLevelGpuProgramPtr& prog) + { + GpuProgramParametersSharedPtr params = prog->getDefaultParameters(); + params->setIgnoreMissingParams(true); + + params->setNamedAutoConstant("ambient", GpuProgramParameters::ACT_AMBIENT_LIGHT_COLOUR); + params->setNamedAutoConstant("lightPosObjSpace", GpuProgramParameters::ACT_LIGHT_POSITION_OBJECT_SPACE, 0); + params->setNamedAutoConstant("lightDiffuseColour", GpuProgramParameters::ACT_LIGHT_DIFFUSE_COLOUR, 0); + params->setNamedAutoConstant("lightSpecularColour", GpuProgramParameters::ACT_LIGHT_SPECULAR_COLOUR, 0); + params->setNamedAutoConstant("eyePosObjSpace", GpuProgramParameters::ACT_CAMERA_POSITION_OBJECT_SPACE); + params->setNamedAutoConstant("fogColour", GpuProgramParameters::ACT_FOG_COLOUR); + + if (prof->isShadowingEnabled(tt, terrain)) + { + uint numTextures = 1; + if (prof->getReceiveDynamicShadowsPSSM()) + { + PSSMShadowCameraSetup* pssm = prof->getReceiveDynamicShadowsPSSM(); + numTextures = pssm->getSplitCount(); + Vector4 splitPoints; + const PSSMShadowCameraSetup::SplitPointList& splitPointList = pssm->getSplitPoints(); + // Populate from split point 1, not 0, since split 0 isn't useful (usually 0) + for (uint i = 1; i < numTextures; ++i) + { + splitPoints[i-1] = splitPointList[i]; + } + params->setNamedConstant("pssmSplitPoints", splitPoints); + } + + if (prof->getReceiveDynamicShadowsDepth()) + { + size_t samplerOffset = (tt == HIGH_LOD) ? mShadowSamplerStartHi : mShadowSamplerStartLo; + for (uint i = 0; i < numTextures; ++i) + { + params->setNamedAutoConstant("inverseShadowmapSize" + StringConverter::toString(i), + GpuProgramParameters::ACT_INVERSE_TEXTURE_SIZE, i + samplerOffset); + } + } + } + + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::updateParams( + const SM2Profile* prof, const MaterialPtr& mat, const Terrain* terrain, bool compositeMap) + { + Pass* p = mat->getTechnique(0)->getPass(0); + if (compositeMap) + { + updateVpParams(prof, terrain, RENDER_COMPOSITE_MAP, p->getVertexProgramParameters()); + updateFpParams(prof, terrain, RENDER_COMPOSITE_MAP, p->getFragmentProgramParameters()); + } + else + { + // high lod + updateVpParams(prof, terrain, HIGH_LOD, p->getVertexProgramParameters()); + updateFpParams(prof, terrain, HIGH_LOD, p->getFragmentProgramParameters()); + + if(prof->isCompositeMapEnabled()) + { + // low lod + p = mat->getTechnique(1)->getPass(0); + updateVpParams(prof, terrain, LOW_LOD, p->getVertexProgramParameters()); + updateFpParams(prof, terrain, LOW_LOD, p->getFragmentProgramParameters()); + } + } + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::updateVpParams( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const GpuProgramParametersSharedPtr& params) + { + params->setIgnoreMissingParams(true); + uint maxLayers = prof->getMaxLayers(terrain); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + uint numUVMul = numLayers / 4; + if (numLayers % 4) + ++numUVMul; + for (uint i = 0; i < numUVMul; ++i) + { + Vector4 uvMul( + terrain->getLayerUVMultiplier(i * 4), + terrain->getLayerUVMultiplier(i * 4 + 1), + terrain->getLayerUVMultiplier(i * 4 + 2), + terrain->getLayerUVMultiplier(i * 4 + 3) + ); + params->setNamedConstant("uvMul" + StringConverter::toString(i), uvMul); + } + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::updateFpParams( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const GpuProgramParametersSharedPtr& params) + { + params->setIgnoreMissingParams(true); + // TODO - parameterise this? + Vector4 scaleBiasSpecular(0.03, -0.04, 32, 1); + params->setNamedConstant("scaleBiasSpecular", scaleBiasSpecular); + + } + //--------------------------------------------------------------------- + String TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::getChannel(uint idx) + { + uint rem = idx % 4; + switch(rem) + { + case 0: + default: + return "r"; + case 1: + return "g"; + case 2: + return "b"; + case 3: + return "a"; + }; + } + //--------------------------------------------------------------------- + String TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::getVertexProgramName( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + String progName = terrain->getMaterialName() + "/sm2/vp"; + + switch(tt) + { + case HIGH_LOD: + progName += "/hlod"; + break; + case LOW_LOD: + progName += "/llod"; + break; + case RENDER_COMPOSITE_MAP: + progName += "/comp"; + break; + } + + return progName; + + } + //--------------------------------------------------------------------- + String TerrainMaterialGeneratorB::SM2Profile::ShaderHelper::getFragmentProgramName( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + + String progName = terrain->getMaterialName() + "/sm2/fp"; + + switch(tt) + { + case HIGH_LOD: + progName += "/hlod"; + break; + case LOW_LOD: + progName += "/llod"; + break; + case RENDER_COMPOSITE_MAP: + progName += "/comp"; + break; + } + + return progName; + } + //--------------------------------------------------------------------- + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::createVertexProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getVertexProgramName(prof, terrain, tt); + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "cg", GPT_VERTEX_PROGRAM); + } + else + { + ret->unload(); + } + + ret->setParameter("profiles", "vs_3_0 vs_2_0 arbvp1"); + ret->setParameter("entry_point", "main_vp"); + + return ret; + + } + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::createFragmentProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getFragmentProgramName(prof, terrain, tt); + + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "cg", GPT_FRAGMENT_PROGRAM); + } + else + { + ret->unload(); + } + + if(prof->isLayerNormalMappingEnabled() || prof->isLayerParallaxMappingEnabled()) + ret->setParameter("profiles", "ps_3_0 ps_2_x fp40 arbfp1"); + else + ret->setParameter("profiles", "ps_3_0 ps_2_0 fp30 arbfp1"); + ret->setParameter("entry_point", "main_fp"); + + return ret; + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateVpHeader( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + outStream << + "void main_vp(\n" + "float4 pos : POSITION,\n" + "float2 uv : TEXCOORD0,\n"; + if (tt != RENDER_COMPOSITE_MAP) + outStream << "float2 delta : TEXCOORD1,\n"; // lodDelta, lodThreshold + + outStream << + "uniform float4x4 worldMatrix,\n" + "uniform float4x4 viewProjMatrix,\n" + "uniform float2 lodMorph,\n"; // morph amount, morph LOD target + + // uv multipliers + uint maxLayers = prof->getMaxLayers(terrain); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + uint numUVMultipliers = (numLayers / 4); + if (numLayers % 4) + ++numUVMultipliers; + for (uint i = 0; i < numUVMultipliers; ++i) + outStream << "uniform float4 uvMul" << i << ", \n"; + + outStream << + "out float4 oPos : POSITION,\n" + "out float4 oPosObj : TEXCOORD0 \n"; + + uint texCoordSet = 1; + outStream << + ", out float4 oUVMisc : TEXCOORD" << texCoordSet++ <<" // xy = uv, z = camDepth\n"; + + // layer UV's premultiplied, packed as xy/zw + uint numUVSets = numLayers / 2; + if (numLayers % 2) + ++numUVSets; + if (tt != LOW_LOD) + { + for (uint i = 0; i < numUVSets; ++i) + { + outStream << + ", out float4 oUV" << i << " : TEXCOORD" << texCoordSet++ << "\n"; + } + } + + if (prof->getParent()->getDebugLevel() && tt != RENDER_COMPOSITE_MAP) + { + outStream << ", out float2 lodInfo : TEXCOORD" << texCoordSet++ << "\n"; + } + + bool fog = terrain->getSceneManager()->getFogMode() != FOG_NONE && tt != RENDER_COMPOSITE_MAP; + if (fog) + { + outStream << + ", uniform float4 fogParams\n" + ", out float fogVal : COLOR\n"; + } + + if (prof->isShadowingEnabled(tt, terrain)) + { + texCoordSet = generateVpDynamicShadowsParams(texCoordSet, prof, terrain, tt, outStream); + } + + // check we haven't exceeded texture coordinates + if (texCoordSet > 8) + { + OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, + "Requested options require too many texture coordinate sets! Try reducing the number of layers.", + __FUNCTION__); + } + + outStream << + ")\n" + "{\n" + " float4 worldPos = mul(worldMatrix, pos);\n" + " oPosObj = pos;\n"; + + if (tt != RENDER_COMPOSITE_MAP) + { + // determine whether to apply the LOD morph to this vertex + // we store the deltas against all vertices so we only want to apply + // the morph to the ones which would disappear. The target LOD which is + // being morphed to is stored in lodMorph.y, and the LOD at which + // the vertex should be morphed is stored in uv.w. If we subtract + // the former from the latter, and arrange to only morph if the + // result is negative (it will only be -1 in fact, since after that + // the vertex will never be indexed), we will achieve our aim. + // sign(vertexLOD - targetLOD) == -1 is to morph + outStream << + " float toMorph = -min(0, sign(delta.y - lodMorph.y));\n"; + // this will either be 1 (morph) or 0 (don't morph) + if (prof->getParent()->getDebugLevel()) + { + // x == LOD level (-1 since value is target level, we want to display actual) + outStream << "lodInfo.x = (lodMorph.y - 1) / " << terrain->getNumLodLevels() << ";\n"; + // y == LOD morph + outStream << "lodInfo.y = toMorph * lodMorph.x;\n"; + } + + // morph + switch (terrain->getAlignment()) + { + case Terrain::ALIGN_X_Y: + outStream << " worldPos.z += delta.x * toMorph * lodMorph.x;\n"; + break; + case Terrain::ALIGN_X_Z: + outStream << " worldPos.y += delta.x * toMorph * lodMorph.x;\n"; + break; + case Terrain::ALIGN_Y_Z: + outStream << " worldPos.x += delta.x * toMorph * lodMorph.x;\n"; + break; + }; + } + + + // generate UVs + if (tt != LOW_LOD) + { + for (uint i = 0; i < numUVSets; ++i) + { + uint layer = i * 2; + uint uvMulIdx = layer / 4; + + outStream << + " oUV" << i << ".xy = " << " uv.xy * uvMul" << uvMulIdx << "." << getChannel(layer) << ";\n"; + outStream << + " oUV" << i << ".zw = " << " uv.xy * uvMul" << uvMulIdx << "." << getChannel(layer+1) << ";\n"; + + } + + } + + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpHeader( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + + // Main header + outStream << + // helpers + "float4 expand(float4 v)\n" + "{ \n" + " return v * 2 - 1;\n" + "}\n\n\n"; + + if (prof->isShadowingEnabled(tt, terrain)) + generateFpDynamicShadowsHelpers(prof, terrain, tt, outStream); + + + outStream << + "float4 main_fp(\n" + "float4 position : TEXCOORD0,\n"; + + uint texCoordSet = 1; + outStream << + "float4 uvMisc : TEXCOORD" << texCoordSet++ << ",\n"; + + // UV's premultiplied, packed as xy/zw + uint maxLayers = prof->getMaxLayers(terrain); + uint numBlendTextures = std::min(terrain->getBlendTextureCount(maxLayers), terrain->getBlendTextureCount()); + uint numLayers = std::min(maxLayers, static_cast(terrain->getLayerCount())); + uint numUVSets = numLayers / 2; + if (numLayers % 2) + ++numUVSets; + if (tt != LOW_LOD) + { + for (uint i = 0; i < numUVSets; ++i) + { + outStream << + "float4 layerUV" << i << " : TEXCOORD" << texCoordSet++ << ", \n"; + } + + } + if (prof->getParent()->getDebugLevel() && tt != RENDER_COMPOSITE_MAP) + { + outStream << "float2 lodInfo : TEXCOORD" << texCoordSet++ << ", \n"; + } + + bool fog = terrain->getSceneManager()->getFogMode() != FOG_NONE && tt != RENDER_COMPOSITE_MAP; + if (fog) + { + outStream << + "uniform float3 fogColour, \n" + "float fogVal : COLOR,\n"; + } + + uint currentSamplerIdx = 0; + + outStream << + // Only 1 light supported in this version + // deferred shading profile / generator later, ok? :) + "uniform float3 ambient,\n" + "uniform float4 lightPosObjSpace,\n" + "uniform float3 lightDiffuseColour,\n" + "uniform float3 lightSpecularColour,\n" + "uniform float3 eyePosObjSpace,\n" + // pack scale, bias and specular + "uniform float4 scaleBiasSpecular,\n"; + + if (tt == LOW_LOD) + { + // single composite map covers all the others below + outStream << + "uniform sampler2D compositeMap : register(s" << currentSamplerIdx++ << ")\n"; + } + else + { + outStream << + "uniform sampler2D globalNormal : register(s" << currentSamplerIdx++ << ")\n"; + + + if (terrain->getGlobalColourMapEnabled() && prof->isGlobalColourMapEnabled()) + { + outStream << ", uniform sampler2D globalColourMap : register(s" + << currentSamplerIdx++ << ")\n"; + } + if (prof->isLightmapEnabled()) + { + outStream << ", uniform sampler2D lightMap : register(s" + << currentSamplerIdx++ << ")\n"; + } + // Blend textures - sampler definitions + for (uint i = 0; i < numBlendTextures; ++i) + { + outStream << ", uniform sampler2D blendTex" << i + << " : register(s" << currentSamplerIdx++ << ")\n"; + } + + // Layer textures - sampler definitions & UV multipliers + for (uint i = 0; i < numLayers; ++i) + { + outStream << ", uniform sampler2D difftex" << i + << " : register(s" << currentSamplerIdx++ << ")\n"; + outStream << ", uniform sampler2D normtex" << i + << " : register(s" << currentSamplerIdx++ << ")\n"; + } + } + + if (prof->isShadowingEnabled(tt, terrain)) + { + generateFpDynamicShadowsParams(&texCoordSet, ¤tSamplerIdx, prof, terrain, tt, outStream); + } + + // check we haven't exceeded samplers + if (currentSamplerIdx > 16) + { + OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, + "Requested options require too many texture samplers! Try reducing the number of layers.", + __FUNCTION__); + } + + outStream << + ") : COLOR\n" + "{\n" + " float4 outputCol;\n" + " float shadow = 1.0;\n" + " float2 uv = uvMisc.xy;\n" + // base colour + " outputCol = float4(0,0,0,1);\n"; + + if (tt != LOW_LOD) + { + outStream << + // global normal + " float3 normal = expand(tex2D(globalNormal, uv)).rgb;\n"; + + } + + outStream << + " float3 lightDir = \n" + " lightPosObjSpace.xyz - (position.xyz * lightPosObjSpace.w);\n" + " float3 eyeDir = eyePosObjSpace - position.xyz;\n" + + // set up accumulation areas + " float3 diffuse = float3(0,0,0);\n" + " float specular = 0;\n"; + + + if (tt == LOW_LOD) + { + // we just do a single calculation from composite map + outStream << + " float4 composite = tex2D(compositeMap, uv);\n" + " diffuse = composite.rgb;\n"; + // TODO - specular; we'll need normals for this! + } + else + { + // set up the blend values + for (uint i = 0; i < numBlendTextures; ++i) + { + outStream << " float4 blendTexVal" << i << " = tex2D(blendTex" << i << ", uv);\n"; + } + + if (prof->isLayerNormalMappingEnabled()) + { + // derive the tangent space basis + // we do this in the pixel shader because we don't have per-vertex normals + // because of the LOD, we use a normal map + // tangent is always +x or -z in object space depending on alignment + switch(terrain->getAlignment()) + { + case Terrain::ALIGN_X_Y: + case Terrain::ALIGN_X_Z: + outStream << " float3 tangent = float3(1, 0, 0);\n"; + break; + case Terrain::ALIGN_Y_Z: + outStream << " float3 tangent = float3(0, 0, -1);\n"; + break; + }; + + outStream << " float3 binormal = normalize(cross(tangent, normal));\n"; + // note, now we need to re-cross to derive tangent again because it wasn't orthonormal + outStream << " tangent = normalize(cross(normal, binormal));\n"; + // derive final matrix + outStream << " float3x3 TBN = float3x3(tangent, binormal, normal);\n"; + + // set up lighting result placeholders for interpolation + outStream << " float4 litRes, litResLayer;\n"; + outStream << " float3 TSlightDir, TSeyeDir, TShalfAngle, TSnormal;\n"; + if (prof->isLayerParallaxMappingEnabled()) + outStream << " float displacement;\n"; + // move + outStream << " TSlightDir = normalize(mul(TBN, lightDir));\n"; + outStream << " TSeyeDir = normalize(mul(TBN, eyeDir));\n"; + + } + else + { + // simple per-pixel lighting with no normal mapping + outStream << " lightDir = normalize(lightDir);\n"; + outStream << " eyeDir = normalize(eyeDir);\n"; + outStream << " float3 halfAngle = normalize(lightDir + eyeDir);\n"; + outStream << " float4 litRes = lit(dot(lightDir, normal), dot(halfAngle, normal), scaleBiasSpecular.z);\n"; + + } + } + + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateVpLayer( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) + { + // nothing to do + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpLayer( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) + { + uint uvIdx = layer / 2; + String uvChannels = layer % 2 ? ".zw" : ".xy"; + uint blendIdx = (layer-1) / 4; + String blendChannel = getChannel(layer-1); + String blendWeightStr = String("blendTexVal") + StringConverter::toString(blendIdx) + + "." + blendChannel; + + // generate early-out conditional + /* Disable - causing some issues even when trying to force the use of texldd + if (layer && prof->_isSM3Available()) + outStream << " if (" << blendWeightStr << " > 0.0003)\n { \n"; + */ + + // generate UV + outStream << " float2 uv" << layer << " = layerUV" << uvIdx << uvChannels << ";\n"; + + // calculate lighting here if normal mapping + if (prof->isLayerNormalMappingEnabled()) + { + if (prof->isLayerParallaxMappingEnabled() && tt != RENDER_COMPOSITE_MAP) + { + // modify UV - note we have to sample an extra time + outStream << " displacement = tex2D(normtex" << layer << ", uv" << layer << ").a\n" + " * scaleBiasSpecular.x + scaleBiasSpecular.y;\n"; + outStream << " uv" << layer << " += TSeyeDir.xy * displacement;\n"; + } + + // access TS normal map + outStream << " TSnormal = expand(tex2D(normtex" << layer << ", uv" << layer << ")).rgb;\n"; + outStream << " TShalfAngle = normalize(TSlightDir + TSeyeDir);\n"; + outStream << " litResLayer = lit(dot(TSlightDir, TSnormal), dot(TShalfAngle, TSnormal), scaleBiasSpecular.z);\n"; + if (!layer) + outStream << " litRes = litResLayer;\n"; + else + outStream << " litRes = lerp(litRes, litResLayer, " << blendWeightStr << ");\n"; + + } + + // sample diffuse texture + outStream << " float4 diffuseSpecTex" << layer + << " = tex2D(difftex" << layer << ", uv" << layer << ");\n"; + + // apply to common + if (!layer) + { + outStream << " diffuse = diffuseSpecTex0.rgb;\n"; + if (prof->isLayerSpecularMappingEnabled()) + outStream << " specular = diffuseSpecTex0.a;\n"; + } + else + { + outStream << " diffuse = lerp(diffuse, diffuseSpecTex" << layer + << ".rgb, " << blendWeightStr << ");\n"; + if (prof->isLayerSpecularMappingEnabled()) + outStream << " specular = lerp(specular, diffuseSpecTex" << layer + << ".a, " << blendWeightStr << ");\n"; + + } + + // End early-out + /* Disable - causing some issues even when trying to force the use of texldd + if (layer && prof->_isSM3Available()) + outStream << " } // early-out blend value\n"; + */ + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateVpFooter( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + + outStream << + " oPos = mul(viewProjMatrix, worldPos);\n" + " oUVMisc.xy = uv.xy;\n"; + + bool fog = terrain->getSceneManager()->getFogMode() != FOG_NONE && tt != RENDER_COMPOSITE_MAP; + if (fog) + { + if (terrain->getSceneManager()->getFogMode() == FOG_LINEAR) + { + outStream << + " fogVal = saturate((oPos.z - fogParams.y) * fogParams.w);\n"; + } + else + { + outStream << + " fogVal = saturate(1 / (exp(oPos.z * fogParams.x)));\n"; + } + } + + if (prof->isShadowingEnabled(tt, terrain)) + generateVpDynamicShadows(prof, terrain, tt, outStream); + + outStream << + "}\n"; + + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpFooter( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + + if (tt == LOW_LOD) + { + if (prof->isShadowingEnabled(tt, terrain)) + { + generateFpDynamicShadows(prof, terrain, tt, outStream); + outStream << + " outputCol.rgb = diffuse * rtshadow;\n"; + } + else + { + outStream << + " outputCol.rgb = diffuse;\n"; + } + } + else + { + if (terrain->getGlobalColourMapEnabled() && prof->isGlobalColourMapEnabled()) + { + // sample colour map and apply to diffuse + outStream << " diffuse *= tex2D(globalColourMap, uv).rgb;\n"; + } + if (prof->isLightmapEnabled()) + { + // sample lightmap + outStream << " shadow = tex2D(lightMap, uv).r;\n"; + } + + if (prof->isShadowingEnabled(tt, terrain)) + { + generateFpDynamicShadows(prof, terrain, tt, outStream); + } + + // diffuse lighting + outStream << " outputCol.rgb += ambient * diffuse + litRes.y * lightDiffuseColour * diffuse * shadow;\n"; + + // specular default + if (!prof->isLayerSpecularMappingEnabled()) + outStream << " specular = 1.0;\n"; + + if (tt == RENDER_COMPOSITE_MAP) + { + // Lighting embedded in alpha + outStream << + " outputCol.a = shadow;\n"; + + } + else + { + // Apply specular + outStream << " outputCol.rgb += litRes.z * lightSpecularColour * specular * shadow;\n"; + + if (prof->getParent()->getDebugLevel()) + { + outStream << " outputCol.rg += lodInfo.xy;\n"; + } + } + } + + bool fog = terrain->getSceneManager()->getFogMode() != FOG_NONE && tt != RENDER_COMPOSITE_MAP; + if (fog) + { + outStream << " outputCol.rgb = lerp(outputCol.rgb, fogColour, fogVal);\n"; + } + + // Final return + outStream << " return outputCol;\n" + << "}\n"; + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpDynamicShadowsHelpers( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + // TODO make filtering configurable + outStream << + "// Simple PCF \n" + "// Number of samples in one dimension (square for total samples) \n" + "#define NUM_SHADOW_SAMPLES_1D 2.0 \n" + "#define SHADOW_FILTER_SCALE 1 \n" + + "#define SHADOW_SAMPLES NUM_SHADOW_SAMPLES_1D*NUM_SHADOW_SAMPLES_1D \n" + + "float4 offsetSample(float4 uv, float2 offset, float invMapSize) \n" + "{ \n" + " return float4(uv.xy + offset * invMapSize * uv.w, uv.z, uv.w); \n" + "} \n"; + + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + "float calcDepthShadow(sampler2D shadowMap, float4 uv, float invShadowMapSize) \n" + "{ \n" + " // 4-sample PCF \n" + + " float shadow = 0.0; \n" + " float offset = (NUM_SHADOW_SAMPLES_1D/2 - 0.5) * SHADOW_FILTER_SCALE; \n" + " for (float y = -offset; y <= offset; y += SHADOW_FILTER_SCALE) \n" + " for (float x = -offset; x <= offset; x += SHADOW_FILTER_SCALE) \n" + " { \n" + " float4 newUV = offsetSample(uv, float2(x, y), invShadowMapSize);\n" + " // manually project and assign derivatives \n" + " // to avoid gradient issues inside loops \n" + " newUV = newUV / newUV.w; \n" + " float depth = tex2D(shadowMap, newUV.xy, 1, 1).x; \n" + " if (depth >= 1 || depth >= uv.z)\n" + " shadow += 1.0;\n" + " } \n" + + " shadow /= SHADOW_SAMPLES; \n" + + " return shadow; \n" + "} \n"; + } + else + { + outStream << + "float calcSimpleShadow(sampler2D shadowMap, float4 shadowMapPos) \n" + "{ \n" + " return tex2Dproj(shadowMap, shadowMapPos).x; \n" + "} \n"; + + } + + if (prof->getReceiveDynamicShadowsPSSM()) + { + uint numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + + + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + "float calcPSSMDepthShadow("; + } + else + { + outStream << + "float calcPSSMSimpleShadow("; + } + + outStream << "\n "; + for (uint i = 0; i < numTextures; ++i) + outStream << "sampler2D shadowMap" << i << ", "; + outStream << "\n "; + for (uint i = 0; i < numTextures; ++i) + outStream << "float4 lsPos" << i << ", "; + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << "\n "; + for (uint i = 0; i < numTextures; ++i) + outStream << "float invShadowmapSize" << i << ", "; + } + outStream << "\n" + " float4 pssmSplitPoints, float camDepth) \n" + "{ \n" + " float shadow; \n" + " // calculate shadow \n"; + + for (uint i = 0; i < numTextures; ++i) + { + if (!i) + outStream << " if (camDepth <= pssmSplitPoints." << ShaderHelper::getChannel(i) << ") \n"; + else if (i < numTextures - 1) + outStream << " else if (camDepth <= pssmSplitPoints." << ShaderHelper::getChannel(i) << ") \n"; + else + outStream << " else \n"; + + outStream << + " { \n"; + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + " shadow = calcDepthShadow(shadowMap" << i << ", lsPos" << i << ", invShadowmapSize" << i << "); \n"; + } + else + { + outStream << + " shadow = calcSimpleShadow(shadowMap" << i << ", lsPos" << i << "); \n"; + } + outStream << + " } \n"; + + } + + outStream << + " return shadow; \n" + "} \n\n\n"; + } + + + } + //--------------------------------------------------------------------- + uint TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateVpDynamicShadowsParams( + uint texCoord, const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + // out semantics & params + uint numTextures = 1; + if (prof->getReceiveDynamicShadowsPSSM()) + { + numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + } + for (uint i = 0; i < numTextures; ++i) + { + outStream << + ", out float4 oLightSpacePos" << i << " : TEXCOORD" << texCoord++ << " \n" << + ", uniform float4x4 texViewProjMatrix" << i << " \n"; + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + ", uniform float4 depthRange" << i << " // x = min, y = max, z = range, w = 1/range \n"; + } + } + + return texCoord; + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateVpDynamicShadows( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + uint numTextures = 1; + if (prof->getReceiveDynamicShadowsPSSM()) + { + numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + } + + // Calculate the position of vertex in light space + for (uint i = 0; i < numTextures; ++i) + { + outStream << + " oLightSpacePos" << i << " = mul(texViewProjMatrix" << i << ", worldPos); \n"; + if (prof->getReceiveDynamicShadowsDepth()) + { + // make linear + outStream << + "oLightSpacePos" << i << ".z = (oLightSpacePos" << i << ".z - depthRange" << i << ".x) * depthRange" << i << ".w;\n"; + + } + } + + + if (prof->getReceiveDynamicShadowsPSSM()) + { + outStream << + " // pass cam depth\n" + " oUVMisc.z = oPos.z;\n"; + } + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpDynamicShadowsParams( + uint* texCoord, uint* sampler, const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + if (tt == HIGH_LOD) + mShadowSamplerStartHi = *sampler; + else if (tt == LOW_LOD) + mShadowSamplerStartLo = *sampler; + + // in semantics & params + uint numTextures = 1; + if (prof->getReceiveDynamicShadowsPSSM()) + { + numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + outStream << + ", uniform float4 pssmSplitPoints \n"; + } + for (uint i = 0; i < numTextures; ++i) + { + outStream << + ", float4 lightSpacePos" << i << " : TEXCOORD" << *texCoord << " \n" << + ", uniform sampler2D shadowMap" << i << " : register(s" << *sampler << ") \n"; + *sampler = *sampler + 1; + *texCoord = *texCoord + 1; + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + ", uniform float inverseShadowmapSize" << i << " \n"; + } + } + + } + //--------------------------------------------------------------------- + void TerrainMaterialGeneratorB::SM2Profile::ShaderHelperCg::generateFpDynamicShadows( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) + { + if (prof->getReceiveDynamicShadowsPSSM()) + { + uint numTextures = prof->getReceiveDynamicShadowsPSSM()->getSplitCount(); + outStream << + " float camDepth = uvMisc.z;\n"; + + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + " float rtshadow = calcPSSMDepthShadow("; + } + else + { + outStream << + " float rtshadow = calcPSSMSimpleShadow("; + } + for (uint i = 0; i < numTextures; ++i) + outStream << "shadowMap" << i << ", "; + outStream << "\n "; + + for (uint i = 0; i < numTextures; ++i) + outStream << "lightSpacePos" << i << ", "; + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << "\n "; + for (uint i = 0; i < numTextures; ++i) + outStream << "inverseShadowmapSize" << i << ", "; + } + outStream << "\n" << + " pssmSplitPoints, camDepth);\n"; + + } + else + { + if (prof->getReceiveDynamicShadowsDepth()) + { + outStream << + " float rtshadow = calcDepthShadow(shadowMap0, lightSpacePos0, inverseShadowmapSize0);"; + } + else + { + outStream << + " float rtshadow = calcSimpleShadow(shadowMap0, lightSpacePos0);"; + } + } + + outStream << + " shadow = min(shadow, rtshadow);\n"; + + } + //--------------------------------------------------------------------- + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperHLSL::createVertexProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getVertexProgramName(prof, terrain, tt); + + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "hlsl", GPT_VERTEX_PROGRAM); + } + else + { + ret->unload(); + } + + if (prof->_isSM3Available()) + ret->setParameter("target", "vs_3_0"); + else + ret->setParameter("target", "vs_2_0"); + ret->setParameter("entry_point", "main_vp"); + + return ret; + + } + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperHLSL::createFragmentProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getFragmentProgramName(prof, terrain, tt); + + + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "hlsl", GPT_FRAGMENT_PROGRAM); + } + else + { + ret->unload(); + } + + if (prof->_isSM3Available()) + ret->setParameter("target", "ps_3_0"); + else + ret->setParameter("target", "ps_2_x"); + ret->setParameter("entry_point", "main_fp"); + + return ret; + + } + //--------------------------------------------------------------------- + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperGLSL::createVertexProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getVertexProgramName(prof, terrain, tt); + + switch(tt) + { + case HIGH_LOD: + progName += "/hlod"; + break; + case LOW_LOD: + progName += "/llod"; + break; + case RENDER_COMPOSITE_MAP: + progName += "/comp"; + break; + } + + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "glsl", GPT_VERTEX_PROGRAM); + } + else + { + ret->unload(); + } + + return ret; + + } + //--------------------------------------------------------------------- + HighLevelGpuProgramPtr + TerrainMaterialGeneratorB::SM2Profile::ShaderHelperGLSL::createFragmentProgram( + const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) + { + HighLevelGpuProgramManager& mgr = HighLevelGpuProgramManager::getSingleton(); + String progName = getFragmentProgramName(prof, terrain, tt); + + HighLevelGpuProgramPtr ret = mgr.getByName(progName); + if (ret.isNull()) + { + ret = mgr.createProgram(progName, ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, + "glsl", GPT_FRAGMENT_PROGRAM); + } + else + { + ret->unload(); + } + + return ret; + + } + + +} diff --git a/apps/openmw/mwrender/terrainmaterial.hpp b/apps/openmw/mwrender/terrainmaterial.hpp new file mode 100644 index 0000000000..eaa5572ee7 --- /dev/null +++ b/apps/openmw/mwrender/terrainmaterial.hpp @@ -0,0 +1,261 @@ +/* +----------------------------------------------------------------------------- +This source file is part of OGRE +(Object-oriented Graphics Rendering Engine) +For the latest info, see http://www.ogre3d.org/ + +Copyright (c) 2000-2011 Torus Knot Software Ltd + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +----------------------------------------------------------------------------- +*/ + +#ifndef __Ogre_TerrainMaterialGeneratorB_H__ +#define __Ogre_TerrainMaterialGeneratorB_H__ + +#include "OgreTerrainPrerequisites.h" +#include "OgreTerrainMaterialGenerator.h" +#include "OgreGpuProgramParams.h" + +namespace Ogre +{ + class PSSMShadowCameraSetup; + + /** \addtogroup Optional Components + * @{ + */ + /** \addtogroup Terrain + * Some details on the terrain component + * @{ + */ + + + /** A TerrainMaterialGenerator which can cope with normal mapped, specular mapped + terrain. + @note Requires the Cg plugin to render correctly + */ + class _OgreTerrainExport TerrainMaterialGeneratorB : public TerrainMaterialGenerator + { + public: + TerrainMaterialGeneratorB(); + ~TerrainMaterialGeneratorB(); + + /** Shader model 2 profile target. + */ + class _OgreTerrainExport SM2Profile : public TerrainMaterialGenerator::Profile + { + public: + SM2Profile(TerrainMaterialGenerator* parent, const String& name, const String& desc); + ~SM2Profile(); + MaterialPtr generate(const Terrain* terrain); + MaterialPtr generateForCompositeMap(const Terrain* terrain); + uint8 getMaxLayers(const Terrain* terrain) const; + void updateParams(const MaterialPtr& mat, const Terrain* terrain); + void updateParamsForCompositeMap(const MaterialPtr& mat, const Terrain* terrain); + void requestOptions(Terrain* terrain); + + /** Whether to support normal mapping per layer in the shader (default true). + */ + bool isLayerNormalMappingEnabled() const { return mLayerNormalMappingEnabled; } + /** Whether to support normal mapping per layer in the shader (default true). + */ + void setLayerNormalMappingEnabled(bool enabled); + /** Whether to support parallax mapping per layer in the shader (default true). + */ + bool isLayerParallaxMappingEnabled() const { return mLayerParallaxMappingEnabled; } + /** Whether to support parallax mapping per layer in the shader (default true). + */ + void setLayerParallaxMappingEnabled(bool enabled); + /** Whether to support specular mapping per layer in the shader (default true). + */ + bool isLayerSpecularMappingEnabled() const { return mLayerSpecularMappingEnabled; } + /** Whether to support specular mapping per layer in the shader (default true). + */ + void setLayerSpecularMappingEnabled(bool enabled); + /** Whether to support a global colour map over the terrain in the shader, + if it's present (default true). + */ + bool isGlobalColourMapEnabled() const { return mGlobalColourMapEnabled; } + /** Whether to support a global colour map over the terrain in the shader, + if it's present (default true). + */ + void setGlobalColourMapEnabled(bool enabled); + /** Whether to support a light map over the terrain in the shader, + if it's present (default true). + */ + bool isLightmapEnabled() const { return mLightmapEnabled; } + /** Whether to support a light map over the terrain in the shader, + if it's present (default true). + */ + void setLightmapEnabled(bool enabled); + /** Whether to use the composite map to provide a lower LOD technique + in the distance (default true). + */ + bool isCompositeMapEnabled() const { return mCompositeMapEnabled; } + /** Whether to use the composite map to provide a lower LOD technique + in the distance (default true). + */ + void setCompositeMapEnabled(bool enabled); + /** Whether to support dynamic texture shadows received from other + objects, on the terrain (default true). + */ + bool getReceiveDynamicShadowsEnabled() const { return mReceiveDynamicShadows; } + /** Whether to support dynamic texture shadows received from other + objects, on the terrain (default true). + */ + void setReceiveDynamicShadowsEnabled(bool enabled); + + /** Whether to use PSSM support dynamic texture shadows, and if so the + settings to use (default 0). + */ + void setReceiveDynamicShadowsPSSM(PSSMShadowCameraSetup* pssmSettings); + /** Whether to use PSSM support dynamic texture shadows, and if so the + settings to use (default 0). + */ + PSSMShadowCameraSetup* getReceiveDynamicShadowsPSSM() const { return mPSSM; } + /** Whether to use depth shadows (default false). + */ + void setReceiveDynamicShadowsDepth(bool enabled); + /** Whether to use depth shadows (default false). + */ + bool getReceiveDynamicShadowsDepth() const { return mDepthShadows; } + /** Whether to use shadows on low LOD material rendering (when using composite map) (default false). + */ + void setReceiveDynamicShadowsLowLod(bool enabled); + /** Whether to use shadows on low LOD material rendering (when using composite map) (default false). + */ + bool getReceiveDynamicShadowsLowLod() const { return mLowLodShadows; } + + /// Internal + bool _isSM3Available() const { return mSM3Available; } + + protected: + + enum TechniqueType + { + HIGH_LOD, + LOW_LOD, + RENDER_COMPOSITE_MAP + }; + void addTechnique(const MaterialPtr& mat, const Terrain* terrain, TechniqueType tt); + + /// Interface definition for helper class to generate shaders + class _OgreTerrainExport ShaderHelper : public TerrainAlloc + { + public: + ShaderHelper() {} + virtual ~ShaderHelper() {} + virtual HighLevelGpuProgramPtr generateVertexProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + virtual HighLevelGpuProgramPtr generateFragmentProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + virtual void updateParams(const SM2Profile* prof, const MaterialPtr& mat, const Terrain* terrain, bool compositeMap); + protected: + virtual String getVertexProgramName(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + virtual String getFragmentProgramName(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + virtual HighLevelGpuProgramPtr createVertexProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) = 0; + virtual HighLevelGpuProgramPtr createFragmentProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt) = 0; + virtual void generateVertexProgramSource(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + virtual void generateFragmentProgramSource(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + virtual void generateVpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) = 0; + virtual void generateFpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) = 0; + virtual void generateVpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) = 0; + virtual void generateFpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) = 0; + virtual void generateVpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) = 0; + virtual void generateFpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) = 0; + virtual void defaultVpParams(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const HighLevelGpuProgramPtr& prog); + virtual void defaultFpParams(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const HighLevelGpuProgramPtr& prog); + virtual void updateVpParams(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const GpuProgramParametersSharedPtr& params); + virtual void updateFpParams(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, const GpuProgramParametersSharedPtr& params); + static String getChannel(uint idx); + + size_t mShadowSamplerStartHi; + size_t mShadowSamplerStartLo; + + }; + + /// Utility class to help with generating shaders for Cg / HLSL. + class _OgreTerrainExport ShaderHelperCg : public ShaderHelper + { + protected: + HighLevelGpuProgramPtr createVertexProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + HighLevelGpuProgramPtr createFragmentProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + void generateVpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateFpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateVpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream); + void generateFpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream); + void generateVpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateFpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + uint generateVpDynamicShadowsParams(uint texCoordStart, const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateVpDynamicShadows(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateFpDynamicShadowsHelpers(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateFpDynamicShadowsParams(uint* texCoord, uint* sampler, const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + void generateFpDynamicShadows(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream); + }; + + class _OgreTerrainExport ShaderHelperHLSL : public ShaderHelperCg + { + protected: + HighLevelGpuProgramPtr createVertexProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + HighLevelGpuProgramPtr createFragmentProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + }; + + /// Utility class to help with generating shaders for GLSL. + class _OgreTerrainExport ShaderHelperGLSL : public ShaderHelper + { + protected: + HighLevelGpuProgramPtr createVertexProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + HighLevelGpuProgramPtr createFragmentProgram(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt); + void generateVpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) {} + void generateFpHeader(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) {} + void generateVpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) {} + void generateFpLayer(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, uint layer, StringUtil::StrStreamType& outStream) {} + void generateVpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) {} + void generateFpFooter(const SM2Profile* prof, const Terrain* terrain, TechniqueType tt, StringUtil::StrStreamType& outStream) {} + }; + + ShaderHelper* mShaderGen; + bool mLayerNormalMappingEnabled; + bool mLayerParallaxMappingEnabled; + bool mLayerSpecularMappingEnabled; + bool mGlobalColourMapEnabled; + bool mLightmapEnabled; + bool mCompositeMapEnabled; + bool mReceiveDynamicShadows; + PSSMShadowCameraSetup* mPSSM; + bool mDepthShadows; + bool mLowLodShadows; + bool mSM3Available; + + bool isShadowingEnabled(TechniqueType tt, const Terrain* terrain) const; + + }; + + + + + }; + + + + /** @} */ + /** @} */ + + +} + +#endif