s_context.h File Reference

Detailed Description

Software rasterization context and private types.

Author:: Keith Whitwell <keith@tungstengraphics.com>

#include "main/mtypes.h"
#include "shader/prog_execute.h"
#include "swrast.h"
#include "s_span.h"

Data Structures

struct SWcontext

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

Defines

#define ALPHATEST_BIT   0x001

Alpha-test pixels.

#define BLEND_BIT   0x002

Blend pixels.

#define DEPTH_BIT   0x004

Depth-test pixels.

#define FOG_BIT   0x008

Fog pixels.

#define LOGIC_OP_BIT   0x010

Apply logic op in software.

#define CLIP_BIT   0x020

Scissor or window clip pixels.

#define STENCIL_BIT   0x040

Stencil pixels.

#define MASKING_BIT   0x080

Do glColorMask or glIndexMask.

#define MULTI_DRAW_BIT   0x400

Write to more than one color-.

#define OCCLUSION_BIT   0x800

GL_HP_occlusion_test enabled.

#define TEXTURE_BIT   0x1000

Texturing really enabled.

#define FRAGPROG_BIT   0x2000

Fragment program enabled.

#define ATIFRAGSHADER_BIT   0x4000

ATI Fragment shader enabled.

#define CLAMPING_BIT   0x8000

Clamp colors to [0,1].

#define _SWRAST_NEW_RASTERMASK

#define RGBA_PIXEL_SIZE(TYPE)

Size of an RGBA pixel, in bytes, for given datatype.

#define FIXED_FRAC_BITS   11

#define FIXED_SHIFT   FIXED_FRAC_BITS

#define FIXED_ONE   (1 << FIXED_SHIFT)

#define FIXED_HALF   (1 << (FIXED_SHIFT-1))

#define FIXED_FRAC_MASK   (FIXED_ONE - 1)

#define FIXED_INT_MASK   (~FIXED_FRAC_MASK)

#define FIXED_EPSILON   1

#define FIXED_SCALE   ((float) FIXED_ONE)

#define FIXED_DBL_SCALE   ((double) FIXED_ONE)

#define FloatToFixed(X)   (IROUND((X) * FIXED_SCALE))

#define FixedToDouble(X)   ((X) * (1.0 / FIXED_DBL_SCALE))

#define IntToFixed(I)   ((I) << FIXED_SHIFT)

#define FixedToInt(X)   ((X) >> FIXED_SHIFT)

#define FixedToUns(X)   (((unsigned int)(X)) >> FIXED_SHIFT)

#define FixedCeil(X)   (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)

#define FixedFloor(X)   ((X) & FIXED_INT_MASK)

#define FixedToFloat(X)   ((X) * (1.0F / FIXED_SCALE))

#define PosFloatToFixed(X)   FloatToFixed(X)

#define SignedFloatToFixed(X)   FloatToFixed(X)

#define ChanToFixed(X)   (X)

#define FixedToChan(X)   (X)

#define ATTRIB_LOOP_BEGIN

For looping over fragment attributes in the pointe, line triangle rasterizers.

#define ATTRIB_LOOP_END   } }

Typedefs

typedef void(* texture_sample_func )(GLcontext *ctx, const struct gl_texture_object *tObj, GLuint n, const GLfloat texcoords[][4], const GLfloat lambda[], GLfloat rgba[][4])

typedef GLuint n

typedef GLuint const GLubyte mask []

typedef GLuint const GLubyte
GLvoid * src

typedef GLuint const GLubyte
GLvoid const GLvoid * dst

typedef GLuint const GLubyte
GLvoid const GLvoid GLenum chanType

typedef void(* swrast_point_func )(GLcontext *ctx, const SWvertex *)

typedef void(* swrast_line_func )(GLcontext *ctx, const SWvertex *, const SWvertex *)

typedef void(* swrast_tri_func )(GLcontext *ctx, const SWvertex *, const SWvertex *, const SWvertex *)

typedef void(* validate_texture_image_func )(GLcontext *ctx, struct gl_texture_object *texObj, GLuint face, GLuint level)

Functions

typedef void (_ASMAPIP blend_func)(GLcontext *ctx

void _swrast_validate_derived (GLcontext *ctx)

void _swrast_update_texture_samplers (GLcontext *ctx)

static INLINE SWcontext * SWRAST_CONTEXT (GLcontext *ctx)

Return SWcontext for the given GLcontext.

static INLINE const SWcontext * CONST_SWRAST_CONTEXT (const GLcontext *ctx)

const version of above

static INLINE void swrast_render_start (GLcontext *ctx)

Called prior to framebuffer reading/writing.

static INLINE void swrast_render_finish (GLcontext *ctx)

Called after framebuffer reading/writing.

Define Documentation

#define _SWRAST_NEW_RASTERMASK

Value:

(_NEW_BUFFERS|  \
                                _NEW_SCISSOR|   \
                                _NEW_COLOR|     \
                                _NEW_DEPTH|     \
                                _NEW_FOG|       \
                                _NEW_PROGRAM|   \
                                _NEW_STENCIL|   \
                                _NEW_TEXTURE|   \
                                _NEW_VIEWPORT|  \
                                _NEW_DEPTH)

#define ATTRIB_LOOP_BEGIN

Value:

{                                                     \
      GLuint a;                                          \
      for (a = 0; a < swrast->_NumActiveAttribs; a++) {  \
         const GLuint attr = swrast->_ActiveAttribs[a];

For looping over fragment attributes in the pointe, line triangle rasterizers.

#define ATTRIB_LOOP_END } }

#define ChanToFixed ( X ) (X)

#define FIXED_DBL_SCALE ((double) FIXED_ONE)

#define FIXED_EPSILON 1

#define FIXED_FRAC_BITS 11

#define FIXED_FRAC_MASK (FIXED_ONE - 1)

#define FIXED_HALF (1 << (FIXED_SHIFT-1))

#define FIXED_INT_MASK (~FIXED_FRAC_MASK)

#define FIXED_ONE (1 << FIXED_SHIFT)

#define FIXED_SCALE ((float) FIXED_ONE)

#define FIXED_SHIFT FIXED_FRAC_BITS

#define FixedCeil ( X ) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)

#define FixedFloor ( X ) ((X) & FIXED_INT_MASK)

#define FixedToChan ( X ) (X)

#define FixedToDouble ( X ) ((X) * (1.0 / FIXED_DBL_SCALE))

#define FixedToFloat ( X ) ((X) * (1.0F / FIXED_SCALE))

#define FixedToInt ( X ) ((X) >> FIXED_SHIFT)

#define FixedToUns ( X ) (((unsigned int)(X)) >> FIXED_SHIFT)

#define FloatToFixed ( X ) (IROUND((X) * FIXED_SCALE))

#define IntToFixed ( I ) ((I) << FIXED_SHIFT)

#define PosFloatToFixed ( X ) FloatToFixed(X)

#define RGBA_PIXEL_SIZE ( TYPE )

Value:

((TYPE == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) :      \
          ((TYPE == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort)     \
           : 4 * sizeof(GLfloat)))

Size of an RGBA pixel, in bytes, for given datatype.

#define SignedFloatToFixed ( X ) FloatToFixed(X)

Typedef Documentation

typedef GLuint const GLubyte GLvoid const GLvoid GLenum chanType

typedef GLuint const GLubyte GLvoid const GLvoid* dst

typedef GLuint const GLubyte mask[]

typedef GLuint n

typedef GLuint const GLubyte GLvoid* src

typedef void(* swrast_line_func)(GLcontext *ctx, const SWvertex *, const SWvertex *)

typedef void(* swrast_point_func)(GLcontext *ctx, const SWvertex *)

typedef void(* swrast_tri_func)(GLcontext *ctx, const SWvertex *, const SWvertex *, const SWvertex *)

typedef void(* texture_sample_func)(GLcontext *ctx, const struct gl_texture_object *tObj, GLuint n, const GLfloat texcoords[][4], const GLfloat lambda[], GLfloat rgba[][4])

typedef void(* validate_texture_image_func)(GLcontext *ctx, struct gl_texture_object *texObj, GLuint face, GLuint level)

Function Documentation

void _swrast_update_texture_samplers ( GLcontext * ctx )

void _swrast_validate_derived ( GLcontext * ctx )

static INLINE const SWcontext* CONST_SWRAST_CONTEXT ( const GLcontext * ctx ) [static]

const version of above

static INLINE SWcontext* SWRAST_CONTEXT ( GLcontext * ctx ) [static]

Return SWcontext for the given GLcontext.

static INLINE void swrast_render_finish ( GLcontext * ctx ) [static]

Called after framebuffer reading/writing.

static INLINE void swrast_render_start ( GLcontext * ctx ) [static]

Called prior to framebuffer reading/writing.

For drivers that rely on swrast for fallback rendering, this is the driver's opportunity to map renderbuffers and textures.

typedef void ( _ASMAPIP blend_func )

Generated on Sun Sep 27 06:48:05 2009 for Mesa Software Rasterization (swrast) by

1.5.4


Data Structures
struct	SWcontext
	Per-context state that's private to the software rasterizer module. More...
Defines
#define	ALPHATEST_BIT 0x001
	Alpha-test pixels.
#define	BLEND_BIT 0x002
	Blend pixels.
#define	DEPTH_BIT 0x004
	Depth-test pixels.
#define	FOG_BIT 0x008
	Fog pixels.
#define	LOGIC_OP_BIT 0x010
	Apply logic op in software.
#define	CLIP_BIT 0x020
	Scissor or window clip pixels.
#define	STENCIL_BIT 0x040
	Stencil pixels.
#define	MASKING_BIT 0x080
	Do glColorMask or glIndexMask.
#define	MULTI_DRAW_BIT 0x400
	Write to more than one color-.
#define	OCCLUSION_BIT 0x800
	GL_HP_occlusion_test enabled.
#define	TEXTURE_BIT 0x1000
	Texturing really enabled.
#define	FRAGPROG_BIT 0x2000
	Fragment program enabled.
#define	ATIFRAGSHADER_BIT 0x4000
	ATI Fragment shader enabled.
#define	CLAMPING_BIT 0x8000
	Clamp colors to [0,1].
#define	_SWRAST_NEW_RASTERMASK
#define	RGBA_PIXEL_SIZE(TYPE)
	Size of an RGBA pixel, in bytes, for given datatype.
#define	FIXED_FRAC_BITS 11
#define	FIXED_SHIFT FIXED_FRAC_BITS
#define	FIXED_ONE (1 << FIXED_SHIFT)
#define	FIXED_HALF (1 << (FIXED_SHIFT-1))
#define	FIXED_FRAC_MASK (FIXED_ONE - 1)
#define	FIXED_INT_MASK (~FIXED_FRAC_MASK)
#define	FIXED_EPSILON 1
#define	FIXED_SCALE ((float) FIXED_ONE)
#define	FIXED_DBL_SCALE ((double) FIXED_ONE)
#define	FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
#define	FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
#define	IntToFixed(I) ((I) << FIXED_SHIFT)
#define	FixedToInt(X) ((X) >> FIXED_SHIFT)
#define	FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
#define	FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
#define	FixedFloor(X) ((X) & FIXED_INT_MASK)
#define	FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
#define	PosFloatToFixed(X) FloatToFixed(X)
#define	SignedFloatToFixed(X) FloatToFixed(X)
#define	ChanToFixed(X) (X)
#define	FixedToChan(X) (X)
#define	ATTRIB_LOOP_BEGIN
	For looping over fragment attributes in the pointe, line triangle rasterizers.
#define	ATTRIB_LOOP_END } }
Typedefs
typedef void(*	texture_sample_func )(GLcontext ctx, const struct gl_texture_object tObj, GLuint n, const GLfloat texcoords[][4], const GLfloat lambda[], GLfloat rgba[][4])
typedef GLuint	n
typedef GLuint const GLubyte	mask []
typedef GLuint const GLubyte GLvoid *	src
typedef GLuint const GLubyte GLvoid const GLvoid *	dst
typedef GLuint const GLubyte GLvoid const GLvoid GLenum	chanType
typedef void(*	swrast_point_func )(GLcontext ctx, const SWvertex )
typedef void(*	swrast_line_func )(GLcontext ctx, const SWvertex , const SWvertex *)
typedef void(*	swrast_tri_func )(GLcontext ctx, const SWvertex , const SWvertex , const SWvertex )
typedef void(*	validate_texture_image_func )(GLcontext ctx, struct gl_texture_object texObj, GLuint face, GLuint level)
Functions
typedef	void (_ASMAPIP blend_func)(GLcontext *ctx
void	_swrast_validate_derived (GLcontext *ctx)
void	_swrast_update_texture_samplers (GLcontext *ctx)
static INLINE SWcontext *	SWRAST_CONTEXT (GLcontext *ctx)
	Return SWcontext for the given GLcontext.
static INLINE const SWcontext *	CONST_SWRAST_CONTEXT (const GLcontext *ctx)
	const version of above
static INLINE void	swrast_render_start (GLcontext *ctx)
	Called prior to framebuffer reading/writing.
static INLINE void	swrast_render_finish (GLcontext *ctx)
	Called after framebuffer reading/writing.