llglslshader.h
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:6k
- /**
- * @file llglslshader.h
- * @brief GLSL shader wrappers
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LLGLSLSHADER_H
- #define LL_LLGLSLSHADER_H
- #include "llgl.h"
- #include "llrender.h"
- class LLShaderFeatures
- {
- public:
- bool calculatesLighting;
- bool calculatesAtmospherics;
- bool hasLighting; // implies no transport (it's possible to have neither though)
- 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 hasAtmospherics;
- bool hasGamma;
- // char numLights;
-
- LLShaderFeatures();
- };
- class LLGLSLShader
- {
- public:
- enum
- {
- SG_DEFAULT = 0,
- SG_SKY,
- SG_WATER
- };
-
- LLGLSLShader();
- void unload();
- BOOL createShader(std::vector<std::string> * attributes,
- std::vector<std::string> * uniforms);
- BOOL attachObject(std::string object);
- void attachObject(GLhandleARB object);
- void attachObjects(GLhandleARB* objects = NULL, S32 count = 0);
- BOOL mapAttributes(const std::vector<std::string> * attributes);
- BOOL mapUniforms(const std::vector<std::string> * uniforms);
- void mapUniform(GLint index, const std::vector<std::string> * uniforms);
- 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 uniform1i(const std::string& uniform, GLint i);
- void uniform1f(const std::string& uniform, GLfloat v);
- void uniform2f(const std::string& uniform, GLfloat x, GLfloat y);
- void uniform3f(const std::string& uniform, GLfloat x, GLfloat y, GLfloat z);
- void uniform4f(const std::string& uniform, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
- void uniform1iv(const std::string& uniform, U32 count, const GLint* i);
- void uniform1fv(const std::string& uniform, U32 count, const GLfloat* v);
- void uniform2fv(const std::string& uniform, U32 count, const GLfloat* v);
- void uniform3fv(const std::string& uniform, U32 count, const GLfloat* v);
- void uniform4fv(const std::string& uniform, U32 count, const GLfloat* v);
- void uniformMatrix2fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v);
- void uniformMatrix3fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v);
- void uniformMatrix4fv(U32 index, U32 count, GLboolean transpose, const GLfloat *v);
- void uniformMatrix2fv(const std::string& uniform, U32 count, GLboolean transpose, const GLfloat *v);
- void uniformMatrix3fv(const std::string& uniform, U32 count, GLboolean transpose, const GLfloat *v);
- void uniformMatrix4fv(const std::string& uniform, U32 count, GLboolean transpose, const GLfloat *v);
- 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 mapUniformTextureChannel(GLint location, GLenum type);
-
- //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);
-
- BOOL link(BOOL suppress_errors = FALSE);
- void bind();
- void unbind();
- // Unbinds any previously bound shader by explicitly binding no shader.
- static void bindNoShader(void);
- GLhandleARB mProgramObject;
- std::vector<GLint> mAttribute; //lookup table of attribute enum to attribute channel
- std::vector<GLint> mUniform; //lookup table of uniform enum to uniform location
- std::map<std::string, GLint> mUniformMap; //lookup map of uniform name to uniform location
- std::map<GLint, LLVector4> mValue; //lookup map of uniform location to last known value
- std::vector<GLint> mTexture;
- S32 mActiveTextureChannels;
- S32 mShaderLevel;
- S32 mShaderGroup;
- BOOL mUniformsDirty;
- LLShaderFeatures mFeatures;
- std::vector< std::pair< std::string, GLenum > > mShaderFiles;
- std::string mName;
- };
- #endif