Wizt::GeometryShader Class Reference

An OpenGL geometry shader. More...

#include <ocean/GLvish/Shader.hpp>

Inheritance diagram for Wizt::GeometryShader:

Classes
struct	VerticesIn
	Enum member N tells how many vertices are available per call of the GeometryShader. More...

Public Types
enum	OutputType
	Output type for geometry shader.
Public Types inherited from MemCore::ReferenceBase< Shader >
using	reference_domain_t = Shader
	The type of the base class.
using	SelfPtr_t = WeakPtr< Shader, Shader >
	Type for a pointer to this object itself.

Public Member Functions
GL::render_primitives	render_primitive ()
	Provide the render primitive type for this geometry shader's input type, which must be compatible, e.g.
Public Member Functions inherited from Wizt::Shader
bool	compile (const std::string &source, const string &srcfilename, unsigned lineNo)
	Compile this program from some GSGL source code.
std::string	getSource () const
	Get the source code as stored by OpenGL.
std::string	InfoLog () const
	Get the info log associated with this shader.
Public Member Functions inherited from MemCore::ReferenceBase< Shader >
auto	getObjectCountID () const noexcept
	Get a unique ID for this object in the given domain.
bool	isIdentical (const WeakPtr< Shader, Shader > &PossibleSelf) const noexcept
	Check if this object is identical to the one used by the given pointer.
void	mkAutoDestructive ()
	Marks this object as being automatically destructed, e.g.
refcount_t	refcount () const noexcept
	The strong reference count.
	ReferenceBase (Shader *that) noexcept
	Constructor, initializes reference counter to zero.
const auto &	self () const
	Return weak pointer to the object self.
refcount_t	wrefcount () const noexcept
	The weak reference count.

Static Public Member Functions
static GL::render_primitives	render_primitive (InputType)
	Provide the render primitive type for a geometry shader's input type, which must be compatible, e.g.

Additional Inherited Members
Protected Member Functions inherited from MemCore::ReferenceBase< Shader >
virtual void	extremeUnction ()
	A virtual function that will be called just before the object is destroyed.
ReferenceBase &	operator= (const ReferenceBase &R)
	Protected assignment operator (should not be called).
void	suicide ()
	Delete this.
virtual	~ReferenceBase ()
	Virtual destructor.

Detailed Description

An OpenGL geometry shader.

http://developer.download.nvidia.com/opengl/specs/GL_EXT_geometry_shader4.txt

// varying inputs:
varying in vec4 gl_FrontColorIn[gl_VerticesIn];
varying in vec4 gl_BackColorIn[gl_VerticesIn];
varying in vec4 gl_FrontSecondaryColorIn[gl_VerticesIn];
varying in vec4 gl_BackSecondaryColorIn[gl_VerticesIn];
varying in vec4 gl_TexCoordIn[gl_VerticesIn][]; // at most will be
                                                // gl_MaxTextureCoords
varying in float gl_FogFragCoordIn[gl_VerticesIn];
varying in vec4  gl_PositionIn[gl_VerticesIn];
varying in float gl_PointSizeIn[gl_VerticesIn];
varying in vec4  gl_ClipVertexIn[gl_VerticesIn];
 
// varying outputs:
varying out vec4 gl_FrontColor;
varying out vec4 gl_BackColor;
varying out vec4 gl_FrontSecondaryColor;
varying out vec4 gl_BackSecondaryColor;
varying out vec4 gl_TexCoord[]; // at most gl_MaxTextureCoords
varying out float gl_FogFragCoord;

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Class Documentation

Wizt::GeometryShader::VerticesIn

struct Wizt::GeometryShader::VerticesIn

template<int InputType>
struct Wizt::GeometryShader::VerticesIn< InputType >

Enum member N tells how many vertices are available per call of the GeometryShader.

Member Function Documentation

render_primitive() [1/2]

GL::render_primitives Wizt::GeometryShader::render_primitive ( )

inline

Provide the render primitive type for this geometry shader's input type, which must be compatible, e.g.

for DrawArray();

render_primitive() [2/2]

GL::render_primitives Wizt::GeometryShader::render_primitive ( InputType  I )

static

Provide the render primitive type for a geometry shader's input type, which must be compatible, e.g.

for DrawArray();