/** * @file llglslshader.h * @brief GLSL shader wrappers * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * 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 * $/LicenseInfo$ */ #ifndef LL_LLGLSLSHADER_H #define LL_LLGLSLSHADER_H #include "llgl.h" #include "llrender.h" #include "llstaticstringtable.h" class LLShaderFeatures { public: bool atmosphericHelpers; bool calculatesLighting; bool calculatesAtmospherics; bool hasLighting; // implies no transport (it's possible to have neither though) bool isAlphaLighting; // indicates lighting shaders need not be linked in (lighting performed directly in alpha shader to match deferred lighting functions) bool isShiny; bool isFullbright; // implies no lighting bool isSpecular; bool hasWaterFog; // implies no gamma bool hasTransport; // implies no lighting (it's possible to have neither though) bool hasSkinning; bool hasObjectSkinning; bool hasAtmospherics; bool hasGamma; S32 mIndexedTextureChannels; bool disableTextureIndex; bool hasAlphaMask; bool attachNothing; // char numLights; LLShaderFeatures(); }; class LLGLSLShader { public: enum { SG_DEFAULT = 0, SG_SKY, SG_WATER }; static std::set sInstances; static bool sProfileEnabled; LLGLSLShader(); ~LLGLSLShader(); static GLhandleARB sCurBoundShader; static LLGLSLShader* sCurBoundShaderPtr; static S32 sIndexedTextureChannels; static bool sNoFixedFunction; static void initProfile(); static void finishProfile(bool emit_report = true); static void startProfile(); static void stopProfile(U32 count, U32 mode); void unload(); void clearStats(); void dumpStats(); void placeProfileQuery(); void readProfileQuery(U32 count, U32 mode); BOOL createShader(std::vector * attributes, std::vector * uniforms, U32 varying_count = 0, const char** varyings = NULL); BOOL attachObject(std::string object); void attachObject(GLhandleARB object); void attachObjects(GLhandleARB* objects = NULL, S32 count = 0); BOOL mapAttributes(const std::vector * attributes); BOOL mapUniforms(const std::vector *); void mapUniform(GLint index, const std::vector *); void uniform1i(U32 index, GLint i); void uniform1f(U32 index, GLfloat v); void uniform2f(U32 index, GLfloat x, GLfloat y); void uniform3f(U32 index, GLfloat x, GLfloat y, GLfloat z); void uniform4f(U32 index, GLfloat x, GLfloat y, GLfloat z, GLfloat w); void uniform1iv(U32 index, U32 count, const GLint* i); void uniform1fv(U32 index, U32 count, const GLfloat* v); void uniform2fv(U32 index, U32 count, const GLfloat* v); void uniform3fv(U32 index, U32 count, const GLfloat* v); void uniform4fv(U32 index, U32 count, const GLfloat* v); void uniform2i(const LLStaticHashedString& uniform, GLint i, GLint j); void uniformMatrix2fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v); void uniformMatrix3fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v); void uniformMatrix3x4fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v); void uniformMatrix4fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v); void uniform1i(const LLStaticHashedString& uniform, GLint i); void uniform1f(const LLStaticHashedString& uniform, GLfloat v); void uniform2f(const LLStaticHashedString& uniform, GLfloat x, GLfloat y); void uniform3f(const LLStaticHashedString& uniform, GLfloat x, GLfloat y, GLfloat z); void uniform1fv(const LLStaticHashedString& uniform, U32 count, const GLfloat* v); void uniform2fv(const LLStaticHashedString& uniform, U32 count, const GLfloat* v); void uniform3fv(const LLStaticHashedString& uniform, U32 count, const GLfloat* v); void uniform4fv(const LLStaticHashedString& uniform, U32 count, const GLfloat* v); void uniformMatrix4fv(const LLStaticHashedString& uniform, U32 count, GLboolean transpose, const GLfloat *v); void setMinimumAlpha(F32 minimum); void vertexAttrib4f(U32 index, GLfloat x, GLfloat y, GLfloat z, GLfloat w); void vertexAttrib4fv(U32 index, GLfloat* v); //GLint getUniformLocation(const std::string& uniform); GLint getUniformLocation(const LLStaticHashedString& uniform); GLint getUniformLocation(U32 index); GLint getAttribLocation(U32 attrib); GLint mapUniformTextureChannel(GLint location, GLenum type); void addPermutation(std::string name, std::string value); void removePermutation(std::string name); //enable/disable texture channel for specified uniform //if given texture uniform is active in the shader, //the corresponding channel will be active upon return //returns channel texture is enabled in from [0-MAX) S32 enableTexture(S32 uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); S32 disableTexture(S32 uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); // bindTexture returns the texture unit we've bound the texture to. // You can reuse the return value to unbind a texture when required. S32 bindTexture(const std::string& uniform, LLTexture *texture, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); S32 bindTexture(S32 uniform, LLTexture *texture, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); S32 unbindTexture(const std::string& uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); S32 unbindTexture(S32 uniform, LLTexUnit::eTextureType mode = LLTexUnit::TT_TEXTURE); BOOL link(BOOL suppress_errors = FALSE); void bind(); void unbind(); // Unbinds any previously bound shader by explicitly binding no shader. static void bindNoShader(void); U32 mMatHash[LLRender::NUM_MATRIX_MODES]; U32 mLightHash; typedef std::map uniforms_index_t; typedef std::pair magmin_values_t; typedef std::map < S32, magmin_values_t> magmin_filter_t; GLhandleARB mProgramObject; std::vector mAttribute; //lookup table of attribute enum to attribute channel U32 mAttributeMask; //mask of which reserved attributes are set (lines up with LLVertexBuffer::getTypeMask()) uniforms_index_t mUniform; uniforms_index_t mTexture; LLStaticStringTable mUniformMap; //lookup map of uniform name to uniform location std::map mUniformNameMap; //lookup map of uniform location to uniform name std::map mValue; //lookup map of uniform location to last known value S32 mTotalUniformSize; S32 mActiveTextureChannels; S32 mShaderLevel; S32 mShaderGroup; BOOL mUniformsDirty; LLShaderFeatures mFeatures; std::vector< std::pair< std::string, GLenum > > mShaderFiles; std::string mName; boost::unordered_map mDefines; //statistcis for profiling shader performance U32 mTimerQuery; U32 mSamplesQuery; U64 mTimeElapsed; static U64 sTotalTimeElapsed; U32 mTrianglesDrawn; static U32 sTotalTrianglesDrawn; U64 mSamplesDrawn; static U64 sTotalSamplesDrawn; U32 mDrawCalls; static U32 sTotalDrawCalls; bool mTextureStateFetched; magmin_filter_t mTextureMagMinFilter; private: void unloadInternal(); inline GLint getLocationForIndex(S32 index) { if (!mProgramObject) return -1; uniforms_index_t::iterator it = mUniform.find(index); if (it == mUniform.end()) return -1; return (*it).second; } inline GLint getTexChannelForIndex(S32 index) { if (!mProgramObject) return -1; uniforms_index_t::iterator it = mTexture.find(index); if (it == mTexture.end()) return -1; return (*it).second; } }; //UI shader (declared here so llui_libtest will link properly) extern LLGLSLShader gUIProgram; //output vec4(color.rgb,color.a*tex0[tc0].a) extern LLGLSLShader gSolidColorProgram; //Alpha mask shader (declared here so llappearance can access properly) extern LLGLSLShader gAlphaMaskProgram; #endif