/** * @file llcubemap.cpp * @brief LLCubeMap class implementation * * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #include "linden_common.h" #include "llworkerthread.h" #include "llcubemap.h" #include "v4coloru.h" #include "v3math.h" #include "v3dmath.h" #include "m3math.h" #include "m4math.h" #include "llrender.h" #include "llglslshader.h" #include "llglheaders.h" namespace { const U16 RESOLUTION = 64; } bool LLCubeMap::sUseCubeMaps = true; LLCubeMap::LLCubeMap(bool init_as_srgb) : mTextureStage(0), mMatrixStage(0), mIssRGB(init_as_srgb) { mTargets[0] = GL_TEXTURE_CUBE_MAP_NEGATIVE_X; mTargets[1] = GL_TEXTURE_CUBE_MAP_POSITIVE_X; mTargets[2] = GL_TEXTURE_CUBE_MAP_NEGATIVE_Y; mTargets[3] = GL_TEXTURE_CUBE_MAP_POSITIVE_Y; mTargets[4] = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; mTargets[5] = GL_TEXTURE_CUBE_MAP_POSITIVE_Z; } LLCubeMap::~LLCubeMap() { } void LLCubeMap::initGL() { llassert(gGLManager.mInited); if (LLCubeMap::sUseCubeMaps) { // Not initialized, do stuff. if (mImages[0].isNull()) { U32 texname = 0; LLImageGL::generateTextures(1, &texname); for (int i = 0; i < 6; i++) { mImages[i] = new LLImageGL(RESOLUTION, RESOLUTION, 4, FALSE); #if USE_SRGB_DECODE if (mIssRGB) { mImages[i]->setExplicitFormat(GL_SRGB8_ALPHA8, GL_RGBA); } #endif mImages[i]->setTarget(mTargets[i], LLTexUnit::TT_CUBE_MAP); mRawImages[i] = new LLImageRaw(RESOLUTION, RESOLUTION, 4); mImages[i]->createGLTexture(0, mRawImages[i], texname); gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_CUBE_MAP, texname); mImages[i]->setAddressMode(LLTexUnit::TAM_CLAMP); stop_glerror(); } gGL.getTexUnit(0)->disable(); } disable(); } else { LL_WARNS() << "Using cube map without extension!" << LL_ENDL; } } void LLCubeMap::initRawData(const std::vector<LLPointer<LLImageRaw> >& rawimages) { bool flip_x[6] = { false, true, false, false, true, false }; bool flip_y[6] = { true, true, true, false, true, true }; bool transpose[6] = { false, false, false, false, true, true }; // Yes, I know that this is inefficient! - djs 08/08/02 for (int i = 0; i < 6; i++) { const U8 *sd = rawimages[i]->getData(); U8 *td = mRawImages[i]->getData(); S32 offset = 0; S32 sx, sy, so; for (int y = 0; y < 64; y++) { for (int x = 0; x < 64; x++) { sx = x; sy = y; if (flip_y[i]) { sy = 63 - y; } if (flip_x[i]) { sx = 63 - x; } if (transpose[i]) { S32 temp = sx; sx = sy; sy = temp; } so = 64*sy + sx; so *= 4; *(td + offset++) = *(sd + so++); *(td + offset++) = *(sd + so++); *(td + offset++) = *(sd + so++); *(td + offset++) = *(sd + so++); } } } } void LLCubeMap::initGLData() { LL_PROFILE_ZONE_SCOPED; for (int i = 0; i < 6; i++) { mImages[i]->setSubImage(mRawImages[i], 0, 0, RESOLUTION, RESOLUTION); } } void LLCubeMap::init(const std::vector<LLPointer<LLImageRaw> >& rawimages) { if (!gGLManager.mIsDisabled) { initGL(); initRawData(rawimages); initGLData(); } } void LLCubeMap::initReflectionMap(U32 resolution, U32 components) { U32 texname = 0; LLImageGL::generateTextures(1, &texname); mImages[0] = new LLImageGL(resolution, resolution, components, TRUE); mImages[0]->setTexName(texname); mImages[0]->setTarget(mTargets[0], LLTexUnit::TT_CUBE_MAP); gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_CUBE_MAP, texname); mImages[0]->setAddressMode(LLTexUnit::TAM_CLAMP); } void LLCubeMap::initEnvironmentMap(const std::vector<LLPointer<LLImageRaw> >& rawimages) { llassert(rawimages.size() == 6); U32 texname = 0; LLImageGL::generateTextures(1, &texname); U32 resolution = rawimages[0]->getWidth(); U32 components = rawimages[0]->getComponents(); for (int i = 0; i < 6; i++) { llassert(rawimages[i]->getWidth() == resolution); llassert(rawimages[i]->getHeight() == resolution); llassert(rawimages[i]->getComponents() == components); mImages[i] = new LLImageGL(resolution, resolution, components, TRUE); mImages[i]->setTarget(mTargets[i], LLTexUnit::TT_CUBE_MAP); mRawImages[i] = rawimages[i]; mImages[i]->createGLTexture(0, mRawImages[i], texname); gGL.getTexUnit(0)->bindManual(LLTexUnit::TT_CUBE_MAP, texname); mImages[i]->setAddressMode(LLTexUnit::TAM_CLAMP); stop_glerror(); mImages[i]->setSubImage(mRawImages[i], 0, 0, resolution, resolution); } enableTexture(0); bind(); mImages[0]->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC); glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); glGenerateMipmap(GL_TEXTURE_CUBE_MAP); gGL.getTexUnit(0)->disable(); disable(); } void LLCubeMap::generateMipMaps() { LL_PROFILE_ZONE_SCOPED_CATEGORY_TEXTURE; mImages[0]->setUseMipMaps(TRUE); mImages[0]->setHasMipMaps(TRUE); enableTexture(0); bind(); mImages[0]->setFilteringOption(LLTexUnit::TFO_BILINEAR); { LL_PROFILE_ZONE_NAMED_CATEGORY_TEXTURE("cmgmm - glGenerateMipmap"); glGenerateMipmap(GL_TEXTURE_CUBE_MAP); } gGL.getTexUnit(0)->disable(); disable(); } GLuint LLCubeMap::getGLName() { return mImages[0]->getTexName(); } void LLCubeMap::bind() { gGL.getTexUnit(mTextureStage)->bind(this); } void LLCubeMap::enable(S32 stage) { enableTexture(stage); } void LLCubeMap::enableTexture(S32 stage) { mTextureStage = stage; if (stage >= 0 && LLCubeMap::sUseCubeMaps) { gGL.getTexUnit(stage)->enable(LLTexUnit::TT_CUBE_MAP); } } void LLCubeMap::disable(void) { disableTexture(); } void LLCubeMap::disableTexture(void) { if (mTextureStage >= 0 && LLCubeMap::sUseCubeMaps) { gGL.getTexUnit(mTextureStage)->disable(); if (mTextureStage == 0) { gGL.getTexUnit(0)->enable(LLTexUnit::TT_TEXTURE); } } } void LLCubeMap::setMatrix(S32 stage) { mMatrixStage = stage; if (mMatrixStage < 0) return; //if (stage > 0) { gGL.getTexUnit(stage)->activate(); } LLVector3 x(gGLModelView+0); LLVector3 y(gGLModelView+4); LLVector3 z(gGLModelView+8); LLMatrix3 mat3; mat3.setRows(x,y,z); LLMatrix4 trans(mat3); trans.transpose(); gGL.matrixMode(LLRender::MM_TEXTURE); gGL.pushMatrix(); gGL.loadMatrix((F32 *)trans.mMatrix); gGL.matrixMode(LLRender::MM_MODELVIEW); /*if (stage > 0) { gGL.getTexUnit(0)->activate(); }*/ } void LLCubeMap::restoreMatrix() { if (mMatrixStage < 0) return; //if (mMatrixStage > 0) { gGL.getTexUnit(mMatrixStage)->activate(); } gGL.matrixMode(LLRender::MM_TEXTURE); gGL.popMatrix(); gGL.matrixMode(LLRender::MM_MODELVIEW); /*if (mMatrixStage > 0) { gGL.getTexUnit(0)->activate(); }*/ } void LLCubeMap::destroyGL() { for (S32 i = 0; i < 6; i++) { mImages[i] = NULL; } }