SWcontext Struct Reference

#include <s_context.h>

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Detailed Description

Per-context state that's private to the software rasterizer module.

Data Fields
struct swrast_device_driver	Driver
	Driver interface:.
GLboolean	AllowVertexFog
	Configuration mechanisms to make software rasterizer match characteristics of the hardware rasterizer (if present):.
GLboolean	AllowPixelFog
GLbitfield	_RasterMask
	Derived values, invalidated on statechanges, updated from _swrast_validate_derived():.
GLfloat	_BackfaceSign
GLfloat	_BackfaceCullSign
	+1 or -1
GLboolean	_PreferPixelFog
	+1, 0, or -1
GLboolean	_TextureCombinePrimary
GLboolean	_FogEnabled
GLboolean	_DeferredTexture
GLenum	_FogMode
GLuint	_ActiveAttribs [FRAG_ATTRIB_MAX]
	List/array of the fragment attributes to interpolate.
GLbitfield	_ActiveAttribMask
	Same info, but as a bitmask.
GLuint	_NumActiveAttribs
	Number of fragment attributes to interpolate.
GLenum	_InterpMode [FRAG_ATTRIB_MAX]
	Indicates how each attrib is to be interpolated (lines/tris).
GLboolean	_IntegerAccumMode
	Storing unscaled integers?
GLfloat	_IntegerAccumScaler
	Implicit scale factor.
GLuint	StippleCounter
	Line stipple counter.
GLuint	PointLineFacing
GLbitfield	NewState
GLuint	StateChanges
GLenum	Primitive
GLboolean	SpecularVertexAdd
	Add specular/secondary color per vertex.
void(*	InvalidateState )(GLcontext *ctx, GLbitfield new_state)
SWspanarrays *	SpanArrays
	Typically, we'll allocate a sw_span structure as a local variable and set its 'array' pointer to point to this object.
SWspanarrays *	ZoomedArrays
	For pixel zooming.
SWspan	PointSpan
	Used to buffer N GL_POINTS, instead of rendering one by one.
blend_func	BlendFunc
	Internal hooks, kept up to date by the same mechanism as above.
texture_sample_func	TextureSample [MAX_TEXTURE_IMAGE_UNITS]
GLfloat *	TexelBuffer
	Buffer for saving the sampled texture colors.
validate_texture_image_func	ValidateTextureImage
struct gl_program_machine	FragProgMachine
	State used during execution of fragment programs.
GLbitfield	InvalidatePointMask
	When the NewState mask intersects these masks, we invalidate the Point/Line/Triangle function pointers below.
GLbitfield	InvalidateLineMask
GLbitfield	InvalidateTriangleMask
void(*	choose_point )(GLcontext *)
	Device drivers plug in functions for these callbacks.
void(*	choose_line )(GLcontext *)
void(*	choose_triangle )(GLcontext *)
swrast_point_func	Point
	Current point, line and triangle drawing functions.
swrast_line_func	Line
swrast_tri_func	Triangle
swrast_point_func	SpecPoint
	Placeholders for when separate specular (or secondary color) is enabled but texturing is not.
swrast_line_func	SpecLine
swrast_tri_func	SpecTriangle

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Field Documentation

struct swrast_device_driver SWcontext::Driver [read]

Driver interface:.

GLboolean SWcontext::AllowVertexFog

Configuration mechanisms to make software rasterizer match characteristics of the hardware rasterizer (if present):.

GLboolean SWcontext::AllowPixelFog

GLbitfield SWcontext::_RasterMask

Derived values, invalidated on statechanges, updated from _swrast_validate_derived():.

GLfloat SWcontext::_BackfaceSign

GLfloat SWcontext::_BackfaceCullSign

+1 or -1

GLboolean SWcontext::_PreferPixelFog

+1, 0, or -1

GLboolean SWcontext::_TextureCombinePrimary

GLboolean SWcontext::_FogEnabled

GLboolean SWcontext::_DeferredTexture

GLenum SWcontext::_FogMode

GLuint SWcontext::_ActiveAttribs[FRAG_ATTRIB_MAX]

List/array of the fragment attributes to interpolate.

GLbitfield SWcontext::_ActiveAttribMask

Same info, but as a bitmask.

GLuint SWcontext::_NumActiveAttribs

Number of fragment attributes to interpolate.

GLenum SWcontext::_InterpMode[FRAG_ATTRIB_MAX]

Indicates how each attrib is to be interpolated (lines/tris).

GLboolean SWcontext::_IntegerAccumMode

Storing unscaled integers?

GLfloat SWcontext::_IntegerAccumScaler

Implicit scale factor.

GLuint SWcontext::StippleCounter

Line stipple counter.

GLuint SWcontext::PointLineFacing

GLbitfield SWcontext::NewState

GLuint SWcontext::StateChanges

GLenum SWcontext::Primitive

GLboolean SWcontext::SpecularVertexAdd

Add specular/secondary color per vertex.

void(* SWcontext::InvalidateState)(GLcontext *ctx, GLbitfield new_state)

GLbitfield SWcontext::InvalidatePointMask

When the NewState mask intersects these masks, we invalidate the Point/Line/Triangle function pointers below.

GLbitfield SWcontext::InvalidateLineMask

GLbitfield SWcontext::InvalidateTriangleMask

void(* SWcontext::choose_point)(GLcontext *)

Device drivers plug in functions for these callbacks.

Will be called when the GL state change mask intersects the above masks.

void(* SWcontext::choose_line)(GLcontext *)

void(* SWcontext::choose_triangle)(GLcontext *)

swrast_point_func SWcontext::Point

Current point, line and triangle drawing functions.

swrast_line_func SWcontext::Line

swrast_tri_func SWcontext::Triangle

swrast_point_func SWcontext::SpecPoint

Placeholders for when separate specular (or secondary color) is enabled but texturing is not.

swrast_line_func SWcontext::SpecLine

swrast_tri_func SWcontext::SpecTriangle

SWspanarrays* SWcontext::SpanArrays

Typically, we'll allocate a sw_span structure as a local variable and set its 'array' pointer to point to this object.

The reason is this object is big and causes problems when allocated on the stack on some systems.

SWspanarrays* SWcontext::ZoomedArrays

For pixel zooming.

SWspan SWcontext::PointSpan

Used to buffer N GL_POINTS, instead of rendering one by one.

blend_func SWcontext::BlendFunc

Internal hooks, kept up to date by the same mechanism as above.

texture_sample_func SWcontext::TextureSample[MAX_TEXTURE_IMAGE_UNITS]

GLfloat* SWcontext::TexelBuffer

Buffer for saving the sampled texture colors.

Needed for GL_ARB_texture_env_crossbar implementation.

validate_texture_image_func SWcontext::ValidateTextureImage

struct gl_program_machine SWcontext::FragProgMachine [read]

State used during execution of fragment programs.

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The documentation for this struct was generated from the following file:

• s_context.h

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