s_context.c File Reference

#include "main/imports.h"
#include "main/bufferobj.h"
#include "main/context.h"
#include "main/colormac.h"
#include "main/mtypes.h"
#include "main/teximage.h"
#include "shader/prog_parameter.h"
#include "shader/prog_statevars.h"
#include "swrast.h"
#include "s_blend.h"
#include "s_context.h"
#include "s_lines.h"
#include "s_points.h"
#include "s_span.h"
#include "s_triangle.h"
#include "s_texfilter.h"

Defines
#define	_SWRAST_NEW_DERIVED
#define	_SWRAST_NEW_TRIANGLE
#define	_SWRAST_NEW_LINE
#define	_SWRAST_NEW_POINT
#define	_SWRAST_NEW_TEXTURE_SAMPLE_FUNC   _NEW_TEXTURE
#define	_SWRAST_NEW_TEXTURE_ENV_MODE   _NEW_TEXTURE
#define	_SWRAST_NEW_BLEND_FUNC   _NEW_COLOR
#define	SWRAST_DEBUG   0
#define	SWRAST_DEBUG_VERTICES   0
Functions
static void	_swrast_update_rasterflags (GLcontext *ctx)
	Recompute the value of swrast->_RasterMask, etc.
static void	_swrast_update_polygon (GLcontext *ctx)
	Examine polygon cull state to compute the _BackfaceCullSign field.
static void	_swrast_update_fog_hint (GLcontext *ctx)
	Update the _PreferPixelFog field to indicate if we need to compute fog blend factors (from the fog coords) per-fragment.
static void	_swrast_update_texture_env (GLcontext *ctx)
	Update the swrast->_TextureCombinePrimary flag.
static void	_swrast_update_deferred_texture (GLcontext *ctx)
	Determine if we can defer texturing/shading until after Z/stencil testing.
static void	_swrast_update_fog_state (GLcontext *ctx)
	Update swrast->_FogColor and swrast->_FogEnable values.
static void	_swrast_update_fragment_program (GLcontext *ctx, GLbitfield newState)
	Update state for running fragment programs.
static void	_swrast_update_specular_vertex_add (GLcontext *ctx)
	See if we can do early diffuse+specular (primary+secondary) color add per vertex instead of per-fragment.
static void	_swrast_validate_triangle (GLcontext *ctx, const SWvertex *v0, const SWvertex *v1, const SWvertex *v2)
	Stub for swrast->Triangle to select a true triangle function after a state change.
static void	_swrast_validate_line (GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
	Called via swrast->Line.
static void	_swrast_validate_point (GLcontext *ctx, const SWvertex *v0)
	Called via swrast->Point.
static void _ASMAPI	_swrast_validate_blend_func (GLcontext *ctx, GLuint n, const GLubyte mask[], GLvoid *src, const GLvoid *dst, GLenum chanType)
	Called via swrast->BlendFunc.
static void	_swrast_validate_texture_images (GLcontext *ctx)
	Make sure we have texture image data for all the textures we may need for subsequent rendering.
void	_swrast_eject_texture_images (GLcontext *ctx)
	Free the texture image data attached to all currently enabled textures.
static void	_swrast_sleep (GLcontext *ctx, GLbitfield new_state)
static void	_swrast_invalidate_state (GLcontext *ctx, GLbitfield new_state)
void	_swrast_update_texture_samplers (GLcontext *ctx)
static void	_swrast_update_active_attribs (GLcontext *ctx)
	Update swrast->_ActiveAttribs, swrast->_NumActiveAttribs, swrast->_ActiveAtttribMask.
void	_swrast_validate_derived (GLcontext *ctx)
void	_swrast_Quad (GLcontext *ctx, const SWvertex *v0, const SWvertex *v1, const SWvertex *v2, const SWvertex *v3)
void	_swrast_Triangle (GLcontext *ctx, const SWvertex *v0, const SWvertex *v1, const SWvertex *v2)
void	_swrast_Line (GLcontext *ctx, const SWvertex *v0, const SWvertex *v1)
void	_swrast_Point (GLcontext *ctx, const SWvertex *v0)
void	_swrast_InvalidateState (GLcontext *ctx, GLbitfield new_state)
void	_swrast_ResetLineStipple (GLcontext *ctx)
void	_swrast_SetFacing (GLcontext *ctx, GLuint facing)
	Indicates front/back facing for subsequent points/lines when drawing unfilled polygons.
void	_swrast_allow_vertex_fog (GLcontext *ctx, GLboolean value)
void	_swrast_allow_pixel_fog (GLcontext *ctx, GLboolean value)
GLboolean	_swrast_CreateContext (GLcontext *ctx)
void	_swrast_DestroyContext (GLcontext *ctx)
struct swrast_device_driver *	_swrast_GetDeviceDriverReference (GLcontext *ctx)
void	_swrast_flush (GLcontext *ctx)
void	_swrast_render_primitive (GLcontext *ctx, GLenum prim)
void	_swrast_render_start (GLcontext *ctx)
void	_swrast_render_finish (GLcontext *ctx)
void	_swrast_print_vertex (GLcontext *ctx, const SWvertex *v)

---

Define Documentation

#define _SWRAST_NEW_BLEND_FUNC   _NEW_COLOR

#define _SWRAST_NEW_DERIVED

Value:

(_SWRAST_NEW_RASTERMASK |       \
                             _NEW_PROGRAM_CONSTANTS |   \
                             _NEW_TEXTURE |             \
                             _NEW_HINT |                \
                             _NEW_POLYGON )

#define _SWRAST_NEW_LINE

Value:

(_SWRAST_NEW_DERIVED |          \
                          _NEW_RENDERMODE|              \
                          _NEW_LINE|                    \
                          _NEW_TEXTURE|                 \
                          _NEW_LIGHT|                   \
                          _NEW_FOG|                     \
                          _NEW_DEPTH |                  \
                          _DD_NEW_SEPARATE_SPECULAR)

#define _SWRAST_NEW_POINT

Value:

(_SWRAST_NEW_DERIVED |  \
                           _NEW_RENDERMODE |            \
                           _NEW_POINT |                 \
                           _NEW_TEXTURE |               \
                           _NEW_LIGHT |                 \
                           _NEW_FOG |                   \
                           _DD_NEW_SEPARATE_SPECULAR)

#define _SWRAST_NEW_TEXTURE_ENV_MODE   _NEW_TEXTURE

#define _SWRAST_NEW_TEXTURE_SAMPLE_FUNC   _NEW_TEXTURE

#define _SWRAST_NEW_TRIANGLE

Value:

(_SWRAST_NEW_DERIVED |          \
                              _NEW_RENDERMODE|                  \
                              _NEW_POLYGON|                     \
                              _NEW_DEPTH|                       \
                              _NEW_STENCIL|                     \
                              _NEW_COLOR|                       \
                              _NEW_TEXTURE|                     \
                              _SWRAST_NEW_RASTERMASK|           \
                              _NEW_LIGHT|                       \
                              _NEW_FOG |                        \
                              _DD_NEW_SEPARATE_SPECULAR)

#define SWRAST_DEBUG   0

#define SWRAST_DEBUG_VERTICES   0

---

Function Documentation

void _swrast_allow_pixel_fog	(	GLcontext *	ctx,
		GLboolean	value
	)

void _swrast_allow_vertex_fog	(	GLcontext *	ctx,
		GLboolean	value
	)

GLboolean _swrast_CreateContext

(

GLcontext *

ctx

)

void _swrast_DestroyContext

(

GLcontext *

ctx

)

void _swrast_eject_texture_images

(

GLcontext *

ctx

)

Free the texture image data attached to all currently enabled textures.

Meant to be called by device drivers when transitioning from software to hardware rendering.

void _swrast_flush

(

GLcontext *

ctx

)

struct swrast_device_driver* _swrast_GetDeviceDriverReference

(

GLcontext *

ctx

)

[read]

static void _swrast_invalidate_state	(	GLcontext *	ctx,
		GLbitfield	new_state
	)			[static]

void _swrast_InvalidateState	(	GLcontext *	ctx,
		GLbitfield	new_state
	)

void _swrast_Line	(	GLcontext *	ctx,
		const SWvertex *	v0,
		const SWvertex *	v1
	)

void _swrast_Point	(	GLcontext *	ctx,
		const SWvertex *	v0
	)

void _swrast_print_vertex	(	GLcontext *	ctx,
		const SWvertex *	v
	)

void _swrast_Quad	(	GLcontext *	ctx,
		const SWvertex *	v0,
		const SWvertex *	v1,
		const SWvertex *	v2,
		const SWvertex *	v3
	)

void _swrast_render_finish

(

GLcontext *

ctx

)

void _swrast_render_primitive	(	GLcontext *	ctx,
		GLenum	prim
	)

void _swrast_render_start

(

GLcontext *

ctx

)

void _swrast_ResetLineStipple

(

GLcontext *

ctx

)

void _swrast_SetFacing	(	GLcontext *	ctx,
		GLuint	facing
	)

Indicates front/back facing for subsequent points/lines when drawing unfilled polygons.

Needed for two-side stencil.

static void _swrast_sleep	(	GLcontext *	ctx,
		GLbitfield	new_state
	)			[static]

void _swrast_Triangle	(	GLcontext *	ctx,
		const SWvertex *	v0,
		const SWvertex *	v1,
		const SWvertex *	v2
	)

static void _swrast_update_active_attribs

(

GLcontext *

ctx

)

[static]

Update swrast->_ActiveAttribs, swrast->_NumActiveAttribs, swrast->_ActiveAtttribMask.

static void _swrast_update_deferred_texture

(

GLcontext *

ctx

)

[static]

Determine if we can defer texturing/shading until after Z/stencil testing.

This potentially allows us to skip texturing/shading for lots of fragments.

static void _swrast_update_fog_hint

(

GLcontext *

ctx

)

[static]

Update the _PreferPixelFog field to indicate if we need to compute fog blend factors (from the fog coords) per-fragment.

static void _swrast_update_fog_state

(

GLcontext *

ctx

)

[static]

Update swrast->_FogColor and swrast->_FogEnable values.

static void _swrast_update_fragment_program	(	GLcontext *	ctx,
		GLbitfield	newState
	)			[static]

Update state for running fragment programs.

Basically, load the program parameters with current state values.

static void _swrast_update_polygon

(

GLcontext *

ctx

)

[static]

Examine polygon cull state to compute the _BackfaceCullSign field.

_BackfaceCullSign will be 0 if no culling, -1 if culling back-faces, and 1 if culling front-faces. The Polygon FrontFace state also factors in.

static void _swrast_update_rasterflags

(

GLcontext *

ctx

)

[static]

Recompute the value of swrast->_RasterMask, etc.

according to the current context. The _RasterMask field can be easily tested by drivers to determine certain basic GL state (does the primitive need stenciling, logic-op, fog, etc?).

static void _swrast_update_specular_vertex_add

(

GLcontext *

ctx

)

[static]

See if we can do early diffuse+specular (primary+secondary) color add per vertex instead of per-fragment.

static void _swrast_update_texture_env

(

GLcontext *

ctx

)

[static]

Update the swrast->_TextureCombinePrimary flag.

void _swrast_update_texture_samplers

(

GLcontext *

ctx

)

static void _ASMAPI _swrast_validate_blend_func	(	GLcontext *	ctx,
		GLuint	n,
		const GLubyte	mask[],
		GLvoid *	src,
		const GLvoid *	dst,
		GLenum	chanType
	)			[static]

Called via swrast->BlendFunc.

Examine GL state to choose a blending function, then call it.

void _swrast_validate_derived

(

GLcontext *

ctx

)

static void _swrast_validate_line	(	GLcontext *	ctx,
		const SWvertex *	v0,
		const SWvertex *	v1
	)			[static]

Called via swrast->Line.

Examine current GL state and choose a software line routine. Then call it.

static void _swrast_validate_point	(	GLcontext *	ctx,
		const SWvertex *	v0
	)			[static]

Called via swrast->Point.

Examine current GL state and choose a software point routine. Then call it.

static void _swrast_validate_texture_images

(

GLcontext *

ctx

)

[static]

Make sure we have texture image data for all the textures we may need for subsequent rendering.

static void _swrast_validate_triangle	(	GLcontext *	ctx,
		const SWvertex *	v0,
		const SWvertex *	v1,
		const SWvertex *	v2
	)			[static]

Stub for swrast->Triangle to select a true triangle function after a state change.

---