Public Member Functions
	~GPUShader ()
	Deletes the underlying glShaderObject.
const std::string &	code () const
bool	fixedFunction () const
GLhandleARB	glShaderObject () const
	Returns the underlying OpenGL shader object for this shader.
GLenum	glShaderType () const
	Shader type, e.g.
void	init (const std::string &name, const std::string &code, bool fromFile, bool debug, GLenum glType, const std::string &type, PreprocessorStatus u, const Table< std::string, int > &samplerMappings, bool secondPass)
const std::string &	messages () const
	Why compilation failed, or any compiler warnings if it succeeded.
bool	ok () const
	Returns true if compilation and loading succeeded.
const std::string &	shaderType () const
bool	usesG3DIndex () const
	True if this shader uses the g3d_Index extension and therefore needs double-compilation to resolve dependencies.
Protected Member Functions
void	checkForSupport ()
	Checks to ensure that this profile is supported on this card.
void	compile ()
	Returns true on success.
bool	replaceG3DIndex (std::string &code, std::string &defineString, const Table< std::string, int > &samplerMappings, bool secondPass)
	Replaces all instances of `g3d_Index[samplername]` with `(g3d_Indx_samplername)` Called from init.
void	replaceG3DSize (std::string &code, std::string &uniformString)
	Replaces all instances of `"g3d_sampler2DSize(<i>name</i>)"` with `" (g3d_sz2D_<i>name</i>.xy)"` and.
Static Protected Member Functions
static GPUShader *	init (GPUShader *shader, bool debug)
	Initialize a shader object and returns object.
Protected Attributes
std::string	_code
bool	_fixedFunction
	Set to true when name and code both == "".
GLhandleARB	_glShaderObject
GLenum	_glShaderType
std::string	_messages
std::string	_name
bool	_ok
std::string	_shaderType
std::string	filename
	Filename if loaded from disk.
bool	fromFile
bool	m_usesG3DIndex
Static Protected Attributes
static std::string	ignore
	argument for output on subclasses

Constructor & Destructor Documentation

G3D::VertexAndPixelShader::GPUShader::~GPUShader ( )

Deletes the underlying glShaderObject.

Between GL's reference counting and G3D's reference counting, an underlying object can never be deleted while in use.

Member Function Documentation

void G3D::VertexAndPixelShader::GPUShader::checkForSupport ( ) [protected]

Checks to ensure that this profile is supported on this card.

Called from init().

const std::string& G3D::VertexAndPixelShader::GPUShader::code ( ) const [inline]

void G3D::VertexAndPixelShader::GPUShader::compile ( ) [protected]

Returns true on success.

Called from init.

bool G3D::VertexAndPixelShader::GPUShader::fixedFunction ( ) const [inline]

GLhandleARB G3D::VertexAndPixelShader::GPUShader::glShaderObject ( ) const [inline]

Returns the underlying OpenGL shader object for this shader.

GLenum G3D::VertexAndPixelShader::GPUShader::glShaderType ( ) const [inline]

Shader type, e.g.

GL_VERTEX_SHADER_ARB

static GPUShader* G3D::VertexAndPixelShader::GPUShader::init	(	GPUShader *	shader,
		bool	debug
	)		`[static, protected]`

Initialize a shader object and returns object.

Called from subclass create methods.

void G3D::VertexAndPixelShader::GPUShader::init	(	const std::string &	name,
		const std::string &	code,
		bool	fromFile,
		bool	debug,
		GLenum	glType,
		const std::string &	type,
		PreprocessorStatus	u,
		const Table< std::string, int > &	samplerMappings,
		bool	secondPass
	)

Parameters:

samplerMappings Table mapping sampler names to their gl_TexCoord indices. This may be empty if the mappings are not yet known.

const std::string& G3D::VertexAndPixelShader::GPUShader::messages ( ) const [inline]

Why compilation failed, or any compiler warnings if it succeeded.

bool G3D::VertexAndPixelShader::GPUShader::ok ( ) const [inline]

Returns true if compilation and loading succeeded.

If they failed, check the message string.

bool G3D::VertexAndPixelShader::GPUShader::replaceG3DIndex	(	std::string &	code,
		std::string &	defineString,
		const Table< std::string, int > &	samplerMappings,
		bool	secondPass
	)		`[protected]`

Replaces all instances of g3d_Index[samplername] with (g3d_Indx_samplername) Called from init.

The first time a file is compiled, samplerMappings is empty. It must then compiled again with correct mappings, which are assigned elsewhere.

Parameters:

defineString	New #defines to insert at the top of the program
code	modified in place
secondPass	On the scond pass, the samplerMappings must not be empty.

Returns:: True if there was one replacement, false otherwise

void G3D::VertexAndPixelShader::GPUShader::replaceG3DSize	(	std::string &	code,
		std::string &	uniformString
	)		`[protected]`

Replaces all instances of "g3d_sampler2DSize(name)" with " (g3d_sz2D_name.xy)" and.

"g3d_sampler2DInvSize(name)" with " (g3d_sz2D_name.zw)"

Note that both replacements will leave column numbers the same in error messages. The () wrapper ensures that .xy fields are accessible using normal syntax off the result; it is the same as the standard practice of wrapping macros in parentheses.

and adds "<code>uniform vec4 g3d_sz2D_name;</code>" to the uniform string.

Called from init.

const std::string& G3D::VertexAndPixelShader::GPUShader::shaderType ( ) const [inline]