Imported existing code

indra/llrender/llglslshader.h

@@ -0,0 +1,145 @@
+/** 
+ * @file llglslshader.h
+ * @brief GLSL shader wrappers
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, 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