__GLcontextRec Struct Reference

#include <mtypes.h>

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Detailed Description

Mesa rendering context.

This is the central context data structure for Mesa. Almost all OpenGL state is contained in this structure. Think of this as a base class from which device drivers will derive sub classes.

The GLcontext typedef names this structure.

Data Fields
struct gl_shared_state *	Shared
	State possibly shared with other contexts in the address space.
GLvisual	Visual
GLframebuffer *	DrawBuffer
	buffer for writing
GLframebuffer *	ReadBuffer
	buffer for reading
GLframebuffer *	WinSysDrawBuffer
	set with MakeCurrent
GLframebuffer *	WinSysReadBuffer
	set with MakeCurrent
struct dd_function_table	Driver
	Device driver function pointer table.
void *	DriverCtx
	Points to device driver context/state.
struct gl_constants	Const
	Core/Driver constants.
GLmatrix	_ModelProjectMatrix
	Combined modelview and projection matrix.
struct gl_meta_state *	Meta
	for "meta" operations
GLenum	ErrorValue
	Last error code.
const char *	ErrorDebugFmtString
	Recognize and silence repeated error debug messages in buggy apps.
GLuint	ErrorDebugCount
GLenum	RenderMode
	either GL_RENDER, GL_SELECT, GL_FEEDBACK
GLbitfield	NewState
	bitwise-or of _NEW_* flags
GLboolean	ViewportInitialized
	has viewport size been initialized?
GLbitfield	varying_vp_inputs
	mask of VERT_BIT_* flags
struct gl_list_extensions	ListExt
	driver dlist extensions
GLboolean	NoDither
	Dither disable via MESA_NO_DITHER env var.
GLboolean	Mesa_DXTn
	software compression/decompression supported or not
GLboolean	mvp_with_dp4
	Use dp4 (rather than mul/mad) instructions for position transformation?
struct gl_tnl_module	TnlModule
	Core tnl module support.
API function pointer tables
struct _glapi_table *	Save
	Display list save functions.
struct _glapi_table *	Exec
	Execute functions.
struct _glapi_table *	CurrentDispatch
	== Save or Exec !!
The various 4x4 matrix stacks
struct gl_matrix_stack	ModelviewMatrixStack
struct gl_matrix_stack	ProjectionMatrixStack
struct gl_matrix_stack	ColorMatrixStack
struct gl_matrix_stack	TextureMatrixStack [MAX_TEXTURE_UNITS]
struct gl_matrix_stack	ProgramMatrixStack [MAX_PROGRAM_MATRICES]
struct gl_matrix_stack *	CurrentStack
	Points to one of the above stacks.
Display lists
struct gl_dlist_state	ListState
GLboolean	ExecuteFlag
	Execute GL commands?
GLboolean	CompileFlag
	Compile GL commands into display list?
struct gl_extensions	Extensions
	Extension information.
State attribute stack (for glPush/PopAttrib)
GLuint	AttribStackDepth
struct gl_attrib_node *	AttribStack [MAX_ATTRIB_STACK_DEPTH]
Renderer attribute groups
We define a struct for each attribute group to make pushing and popping attributes easy. Also it's a good organization.
struct gl_accum_attrib	Accum
	Accum buffer attributes.
struct gl_colorbuffer_attrib	Color
	Color buffer attributes.
struct gl_current_attrib	Current
	Current attributes.
struct gl_depthbuffer_attrib	Depth
	Depth buffer attributes.
struct gl_eval_attrib	Eval
	Eval attributes.
struct gl_fog_attrib	Fog
	Fog attributes.
struct gl_hint_attrib	Hint
	Hint attributes.
struct gl_light_attrib	Light
	Light attributes.
struct gl_line_attrib	Line
	Line attributes.
struct gl_list_attrib	List
	List attributes.
struct gl_multisample_attrib	Multisample
struct gl_pixel_attrib	Pixel
	Pixel attributes.
struct gl_point_attrib	Point
	Point attributes.
struct gl_polygon_attrib	Polygon
	Polygon attributes.
GLuint	PolygonStipple [32]
	Polygon stipple.
struct gl_scissor_attrib	Scissor
	Scissor attributes.
struct gl_stencil_attrib	Stencil
	Stencil buffer attributes.
struct gl_texture_attrib	Texture
	Texture attributes.
struct gl_transform_attrib	Transform
	Transformation attributes.
struct gl_viewport_attrib	Viewport
	Viewport attributes.
Client attribute stack
GLuint	ClientAttribStackDepth
struct gl_attrib_node *	ClientAttribStack [MAX_CLIENT_ATTRIB_STACK_DEPTH]
Client attribute groups
struct gl_array_attrib	Array
	Vertex arrays.
struct gl_pixelstore_attrib	Pack
	Pixel packing.
struct gl_pixelstore_attrib	Unpack
	Pixel unpacking.
struct gl_pixelstore_attrib	DefaultPacking
	Default params.
Other assorted state (not pushed/popped on attribute stack)
struct gl_pixelmaps	PixelMaps
struct gl_histogram_attrib	Histogram
struct gl_minmax_attrib	MinMax
struct gl_convolution_attrib	Convolution1D
struct gl_convolution_attrib	Convolution2D
struct gl_convolution_attrib	Separable2D
struct gl_evaluators	EvalMap
	All evaluators.
struct gl_feedback	Feedback
	Feedback.
struct gl_selection	Select
	Selection.
struct gl_color_table	ColorTable [COLORTABLE_MAX]
struct gl_color_table	ProxyColorTable [COLORTABLE_MAX]
struct gl_program_state	Program
	general program state
struct gl_vertex_program_state	VertexProgram
struct gl_fragment_program_state	FragmentProgram
struct gl_ati_fragment_shader_state	ATIFragmentShader
struct gl_shader_state	Shader
	GLSL shader object state.
struct gl_query_state	Query
	occlusion, timer queries
struct gl_buffer_object *	CopyReadBuffer
	GL_ARB_copy_buffer.
struct gl_buffer_object *	CopyWriteBuffer
	GL_ARB_copy_buffer.
Derived state
GLbitfield	_TriangleCaps
	Bitwise-or of DD_* flags.
GLbitfield	_ImageTransferState
	bitwise-or of IMAGE_*_BIT flags
GLfloat	_EyeZDir [3]
GLfloat	_ModelViewInvScale
GLboolean	_NeedEyeCoords
GLboolean	_ForceEyeCoords
GLuint	TextureStateTimestamp
	detect changes to shared state
struct gl_shine_tab *	_ShineTable [2]
	Active shine tables.
struct gl_shine_tab *	_ShineTabList
	MRU list of inactive shine tables.
For debugging/development only
GLboolean	FirstTimeCurrent
Hooks for module contexts.
These will eventually live in the driver or elsewhere.
void *	swrast_context
void *	swsetup_context
void *	swtnl_context
void *	swtnl_im
struct st_context *	st
void *	aelt_context

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Field Documentation

struct gl_shared_state* __GLcontextRec::Shared [read]

State possibly shared with other contexts in the address space.

struct _glapi_table* __GLcontextRec::Save [read]

Display list save functions.

struct _glapi_table* __GLcontextRec::Exec [read]

Execute functions.

struct _glapi_table* __GLcontextRec::CurrentDispatch [read]

== Save or Exec !!

GLvisual __GLcontextRec::Visual

GLframebuffer* __GLcontextRec::DrawBuffer

buffer for writing

GLframebuffer* __GLcontextRec::ReadBuffer

buffer for reading

GLframebuffer* __GLcontextRec::WinSysDrawBuffer

set with MakeCurrent

GLframebuffer* __GLcontextRec::WinSysReadBuffer

set with MakeCurrent

struct dd_function_table __GLcontextRec::Driver [read]

Device driver function pointer table.

void* __GLcontextRec::DriverCtx

Points to device driver context/state.

struct gl_constants __GLcontextRec::Const [read]

Core/Driver constants.

struct gl_matrix_stack __GLcontextRec::ModelviewMatrixStack [read]

struct gl_matrix_stack __GLcontextRec::ProjectionMatrixStack [read]

struct gl_matrix_stack __GLcontextRec::ColorMatrixStack [read]

struct gl_matrix_stack __GLcontextRec::TextureMatrixStack[MAX_TEXTURE_UNITS] [read]

struct gl_matrix_stack __GLcontextRec::ProgramMatrixStack[MAX_PROGRAM_MATRICES] [read]

struct gl_matrix_stack* __GLcontextRec::CurrentStack [read]

Points to one of the above stacks.

GLmatrix __GLcontextRec::_ModelProjectMatrix

Combined modelview and projection matrix.

struct gl_dlist_state __GLcontextRec::ListState [read]

GLboolean __GLcontextRec::ExecuteFlag

Execute GL commands?

GLboolean __GLcontextRec::CompileFlag

Compile GL commands into display list?

struct gl_extensions __GLcontextRec::Extensions [read]

Extension information.

GLuint __GLcontextRec::AttribStackDepth

struct gl_attrib_node* __GLcontextRec::AttribStack[MAX_ATTRIB_STACK_DEPTH] [read]

struct gl_accum_attrib __GLcontextRec::Accum [read]

Accum buffer attributes.

struct gl_colorbuffer_attrib __GLcontextRec::Color [read]

Color buffer attributes.

struct gl_current_attrib __GLcontextRec::Current [read]

Current attributes.

struct gl_depthbuffer_attrib __GLcontextRec::Depth [read]

Depth buffer attributes.

struct gl_eval_attrib __GLcontextRec::Eval [read]

Eval attributes.

struct gl_fog_attrib __GLcontextRec::Fog [read]

Fog attributes.

struct gl_hint_attrib __GLcontextRec::Hint [read]

Hint attributes.

struct gl_light_attrib __GLcontextRec::Light [read]

Light attributes.

struct gl_line_attrib __GLcontextRec::Line [read]

Line attributes.

struct gl_list_attrib __GLcontextRec::List [read]

List attributes.

struct gl_multisample_attrib __GLcontextRec::Multisample [read]

struct gl_pixel_attrib __GLcontextRec::Pixel [read]

Pixel attributes.

struct gl_point_attrib __GLcontextRec::Point [read]

Point attributes.

struct gl_polygon_attrib __GLcontextRec::Polygon [read]

Polygon attributes.

GLuint __GLcontextRec::PolygonStipple[32]

Polygon stipple.

struct gl_scissor_attrib __GLcontextRec::Scissor [read]

Scissor attributes.

struct gl_stencil_attrib __GLcontextRec::Stencil [read]

Stencil buffer attributes.

struct gl_texture_attrib __GLcontextRec::Texture [read]

Texture attributes.

struct gl_transform_attrib __GLcontextRec::Transform [read]

Transformation attributes.

struct gl_viewport_attrib __GLcontextRec::Viewport [read]

Viewport attributes.

GLuint __GLcontextRec::ClientAttribStackDepth

struct gl_attrib_node* __GLcontextRec::ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH] [read]

struct gl_array_attrib __GLcontextRec::Array [read]

Vertex arrays.

struct gl_pixelstore_attrib __GLcontextRec::Pack [read]

Pixel packing.

struct gl_pixelstore_attrib __GLcontextRec::Unpack [read]

Pixel unpacking.

struct gl_pixelstore_attrib __GLcontextRec::DefaultPacking [read]

Default params.

struct gl_pixelmaps __GLcontextRec::PixelMaps [read]

struct gl_histogram_attrib __GLcontextRec::Histogram [read]

struct gl_minmax_attrib __GLcontextRec::MinMax [read]

struct gl_convolution_attrib __GLcontextRec::Convolution1D [read]

struct gl_convolution_attrib __GLcontextRec::Convolution2D [read]

struct gl_convolution_attrib __GLcontextRec::Separable2D [read]

struct gl_evaluators __GLcontextRec::EvalMap [read]

All evaluators.

struct gl_feedback __GLcontextRec::Feedback [read]

Feedback.

struct gl_selection __GLcontextRec::Select [read]

Selection.

struct gl_color_table __GLcontextRec::ColorTable[COLORTABLE_MAX] [read]

struct gl_color_table __GLcontextRec::ProxyColorTable[COLORTABLE_MAX] [read]

struct gl_program_state __GLcontextRec::Program [read]

general program state

struct gl_vertex_program_state __GLcontextRec::VertexProgram [read]

struct gl_fragment_program_state __GLcontextRec::FragmentProgram [read]

struct gl_ati_fragment_shader_state __GLcontextRec::ATIFragmentShader [read]

struct gl_shader_state __GLcontextRec::Shader [read]

GLSL shader object state.

struct gl_query_state __GLcontextRec::Query [read]

occlusion, timer queries

struct gl_buffer_object* __GLcontextRec::CopyReadBuffer [read]

GL_ARB_copy_buffer.

struct gl_buffer_object* __GLcontextRec::CopyWriteBuffer [read]

GL_ARB_copy_buffer.

struct gl_meta_state* __GLcontextRec::Meta [read]

for "meta" operations

GLenum __GLcontextRec::ErrorValue

Last error code.

const char* __GLcontextRec::ErrorDebugFmtString

Recognize and silence repeated error debug messages in buggy apps.

GLuint __GLcontextRec::ErrorDebugCount

GLenum __GLcontextRec::RenderMode

either GL_RENDER, GL_SELECT, GL_FEEDBACK

GLbitfield __GLcontextRec::NewState

bitwise-or of _NEW_* flags

GLboolean __GLcontextRec::ViewportInitialized

has viewport size been initialized?

GLbitfield __GLcontextRec::varying_vp_inputs

mask of VERT_BIT_* flags

GLbitfield __GLcontextRec::_TriangleCaps

Bitwise-or of DD_* flags.

Note that this bitfield may be used before state validation so they need to always be current.

GLbitfield __GLcontextRec::_ImageTransferState

bitwise-or of IMAGE_*_BIT flags

GLfloat __GLcontextRec::_EyeZDir[3]

GLfloat __GLcontextRec::_ModelViewInvScale

GLboolean __GLcontextRec::_NeedEyeCoords

GLboolean __GLcontextRec::_ForceEyeCoords

GLuint __GLcontextRec::TextureStateTimestamp

detect changes to shared state

struct gl_shine_tab* __GLcontextRec::_ShineTable[2] [read]

Active shine tables.

struct gl_shine_tab* __GLcontextRec::_ShineTabList [read]

MRU list of inactive shine tables.

struct gl_list_extensions __GLcontextRec::ListExt [read]

driver dlist extensions

GLboolean __GLcontextRec::FirstTimeCurrent

GLboolean __GLcontextRec::NoDither

Dither disable via MESA_NO_DITHER env var.

GLboolean __GLcontextRec::Mesa_DXTn

software compression/decompression supported or not

GLboolean __GLcontextRec::mvp_with_dp4

Use dp4 (rather than mul/mad) instructions for position transformation?

struct gl_tnl_module __GLcontextRec::TnlModule [read]

Core tnl module support.

void* __GLcontextRec::swrast_context

void* __GLcontextRec::swsetup_context

void* __GLcontextRec::swtnl_context

void* __GLcontextRec::swtnl_im

struct st_context* __GLcontextRec::st [read]

void* __GLcontextRec::aelt_context

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

• mtypes.h

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