Shader Class Reference

#include <Shader.h>

Collaboration diagram for Shader:

[legend]

List of all members.

Public Member Functions
	Shader (void)
virtual	~Shader (void)
bool	loadShader (string vertexShaderFile, string fragmentShaderFile)
bool	isInitialized ()
void	use ()
void	passUniformSampler3D (const string &variableName, const Texture3D *tex3D)
void	passUniformSampler1D (const string &variableName, const Texture1D *tex3D)
Static Public Member Functions
static void	dropCurrentShader ()
Private Member Functions
const char *	readTextFile (string filename)
Static Private Member Functions
static void	releaseActiveTextureUnits ()
Private Attributes
GLenum	m_shaderProgram
GLenum	m_vertexShader
GLenum	m_fragmentShader
bool	m_initialized
Static Private Attributes
static Shader *	m_activeShader = NULL
static int	m_textureUnitTargets [64] = {0}
static int	m_activeTextureUnit = 0

---

Constructor & Destructor Documentation

Shader::Shader

(

void

)

Shader::~Shader

(

void

)

[virtual]

---

Member Function Documentation

void Shader::dropCurrentShader

(

)

[static]

Deactivates the current used shader program. Internally calls glUseProgramObjectARB(0) and releases all active texture units

bool Shader::isInitialized

(

)

Returns:

true, if this Shader object is initialized by some shader program

bool Shader::loadShader	(	string	vertexShaderFile,
		string	fragmentShaderFile
	)

Loads a Shader program from the given vertesShader- and fragmentShader-File. TODO: extended error handling and and report if shader files have syntax errors and so on

void Shader::passUniformSampler1D	(	const string &	variableName,
		const Texture1D *	tex3D
	)

void Shader::passUniformSampler3D	(	const string &	variableName,
		const Texture3D *	tex3D
	)

Resets the internal activeTextureunit-Counter to zero. Call this function before each sequence of passUniformSampler3D()-call.

void Shader::beginPassTextures() { Disable all prviously used targets in the Active Texture Units Shader::releaseActiveTextureUnits();

use();

m_activeTextureUnit = 0; }

const char * Shader::readTextFile

(

string

filename

)

[private]

Reads a textfile from the harddrive, and returns as const char* buffer. Used for shader source loading Remarks: The const char* buffer allocated in this method is to be released by a delete[] call later

Parameters:

filename

the path to the textfile to load

Returns:

a pointer to the buffer containing the file content

void Shader::releaseActiveTextureUnits

(

)

[static, private]

Disables all targets of the active Shader previously enabled in Active Texture Units and sets it internal activeTextureUnit counter to 0

void Shader::use

(

)

Uses this Shader's program in the following shading operations

---

Member Data Documentation

Shader * Shader::m_activeShader = NULL [static, private]

int Shader::m_activeTextureUnit = 0 [static, private]

GLenum Shader::m_fragmentShader [private]

bool Shader::m_initialized [private]

GLenum Shader::m_shaderProgram [private]

int Shader::m_textureUnitTargets = {0} [static, private]

GLenum Shader::m_vertexShader [private]

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The documentation for this class was generated from the following files:

• F:/Meine Dateien/Visual Studio 2005/Projects/InsightFlow/header/Shader.h
• F:/Meine Dateien/Visual Studio 2005/Projects/InsightFlow/src/Shader.cpp