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Diffstat (limited to 'indra/llrender/llcubemaparray.cpp')
| -rw-r--r-- | indra/llrender/llcubemaparray.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/indra/llrender/llcubemaparray.cpp b/indra/llrender/llcubemaparray.cpp new file mode 100644 index 0000000000..5403a0d12c --- /dev/null +++ b/indra/llrender/llcubemaparray.cpp @@ -0,0 +1,181 @@ +/** + * @file llcubemaparray.cpp + * @brief LLCubeMap class implementation + * + * $LicenseInfo:firstyear=2022&license=viewerlgpl$ + * Second Life Viewer Source Code + * Copyright (C) 2022, 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 "llcubemaparray.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" + +//#pragma optimize("", off) + +// MUST match order of OpenGL face-layers +GLenum LLCubeMapArray::sTargets[6] = +{ + GL_TEXTURE_CUBE_MAP_POSITIVE_X, + GL_TEXTURE_CUBE_MAP_NEGATIVE_X, + GL_TEXTURE_CUBE_MAP_POSITIVE_Y, + GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, + GL_TEXTURE_CUBE_MAP_POSITIVE_Z, + GL_TEXTURE_CUBE_MAP_NEGATIVE_Z +}; + +LLVector3 LLCubeMapArray::sLookVecs[6] = +{ + LLVector3(1, 0, 0), + LLVector3(-1, 0, 0), + LLVector3(0, 1, 0), + LLVector3(0, -1, 0), + LLVector3(0, 0, 1), + LLVector3(0, 0, -1) +}; + +LLVector3 LLCubeMapArray::sUpVecs[6] = +{ + LLVector3(0, -1, 0), + LLVector3(0, -1, 0), + LLVector3(0, 0, 1), + LLVector3(0, 0, -1), + LLVector3(0, -1, 0), + LLVector3(0, -1, 0) +}; + +LLVector3 LLCubeMapArray::sClipToCubeLookVecs[6] = +{ + LLVector3(0, 0, -1), //GOOD + LLVector3(0, 0, 1), //GOOD + + LLVector3(1, 0, 0), // GOOD + LLVector3(1, 0, 0), // GOOD + + LLVector3(1, 0, 0), + LLVector3(-1, 0, 0), +}; + +LLVector3 LLCubeMapArray::sClipToCubeUpVecs[6] = +{ + LLVector3(-1, 0, 0), //GOOD + LLVector3(1, 0, 0), //GOOD + + LLVector3(0, 1, 0), // GOOD + LLVector3(0, -1, 0), // GOOD + + LLVector3(0, 0, -1), + LLVector3(0, 0, 1) +}; + +LLCubeMapArray::LLCubeMapArray() + : mTextureStage(0) +{ + +} + +LLCubeMapArray::~LLCubeMapArray() +{ +} + +void LLCubeMapArray::allocate(U32 resolution, U32 components, U32 count, BOOL use_mips) +{ + U32 texname = 0; + mWidth = resolution; + mCount = count; + + LLImageGL::generateTextures(1, &texname); + + mImage = new LLImageGL(resolution, resolution, components, use_mips); + mImage->setTexName(texname); + mImage->setTarget(sTargets[0], LLTexUnit::TT_CUBE_MAP_ARRAY); + + mImage->setUseMipMaps(use_mips); + mImage->setHasMipMaps(use_mips); + + bind(0); + + U32 format = components == 4 ? GL_RGBA16F : GL_RGB16F; + + U32 mip = 0; + + while (resolution >= 1) + { +#if GL_VERSION_4_0 + glTexImage3D(GL_TEXTURE_CUBE_MAP_ARRAY, mip, format, resolution, resolution, count * 6, 0, + GL_RGBA, GL_UNSIGNED_BYTE, nullptr); +#endif + + if (!use_mips) + { + break; + } + resolution /= 2; + ++mip; + } + + mImage->setAddressMode(LLTexUnit::TAM_CLAMP); + + if (use_mips) + { + mImage->setFilteringOption(LLTexUnit::TFO_ANISOTROPIC); + //glGenerateMipmap(GL_TEXTURE_CUBE_MAP_ARRAY); // <=== latest AMD drivers do not appreciate this method of allocating mipmaps + } + else + { + mImage->setFilteringOption(LLTexUnit::TFO_BILINEAR); + } + + unbind(); +} + +void LLCubeMapArray::bind(S32 stage) +{ + mTextureStage = stage; + gGL.getTexUnit(stage)->bindManual(LLTexUnit::TT_CUBE_MAP_ARRAY, getGLName(), mImage->getUseMipMaps()); +} + +void LLCubeMapArray::unbind() +{ + gGL.getTexUnit(mTextureStage)->unbind(LLTexUnit::TT_CUBE_MAP_ARRAY); + mTextureStage = -1; +} + +GLuint LLCubeMapArray::getGLName() +{ + return mImage->getTexName(); +} + +void LLCubeMapArray::destroyGL() +{ + mImage = NULL; +} |