t_vb_program.c File Reference

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Detailed Description

Pipeline stage for executing vertex programs.

Author:

Brian Paul, Keith Whitwell

#include "main/glheader.h"
#include "main/colormac.h"
#include "main/context.h"
#include "main/macros.h"
#include "main/imports.h"
#include "shader/prog_instruction.h"
#include "shader/prog_statevars.h"
#include "shader/prog_execute.h"
#include "swrast/s_context.h"
#include "swrast/s_texfilter.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_pipeline.h"

Data Structures
struct	vp_stage_data
Defines
#define	VP_STAGE_DATA(stage)   ((struct vp_stage_data *)(stage->privatePtr))
Functions
static void	userclip (GLcontext *ctx, GLvector4f *clip, GLubyte *clipmask, GLubyte *clipormask, GLubyte *clipandmask)
static GLboolean	do_ndc_cliptest (GLcontext *ctx, struct vp_stage_data *store)
static void	vp_fetch_texel (GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda, GLuint unit, GLfloat color[4])
	XXX the texture sampling code in this module is a bit of a hack.
void	_tnl_program_string (GLcontext *ctx, GLenum target, struct gl_program *program)
	Called via ctx->Driver.ProgramStringNotify() after a new vertex program string has been parsed.
static void	init_machine (GLcontext *ctx, struct gl_program_machine *machine)
	Initialize virtual machine state prior to executing vertex program.
static void	map_textures (GLcontext *ctx, const struct gl_vertex_program *vp)
	Map the texture images which the vertex program will access (if any).
static void	unmap_textures (GLcontext *ctx, const struct gl_vertex_program *vp)
	Unmap the texture images which were used by the vertex program (if any).
static GLboolean	run_vp (GLcontext *ctx, struct tnl_pipeline_stage *stage)
	This function executes vertex programs.
static GLboolean	init_vp (GLcontext *ctx, struct tnl_pipeline_stage *stage)
	Called the first time stage->run is called.
static void	dtr (struct tnl_pipeline_stage *stage)
	Destructor for this pipeline stage.
static void	validate_vp_stage (GLcontext *ctx, struct tnl_pipeline_stage *stage)
Variables
struct tnl_pipeline_stage	_tnl_vertex_program_stage
	Public description of this pipeline stage.

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Define Documentation

#define VP_STAGE_DATA

(

stage

)

((struct vp_stage_data *)(stage->privatePtr))

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Function Documentation

void _tnl_program_string	(	GLcontext *	ctx,
		GLenum	target,
		struct gl_program *	program
	)

Called via ctx->Driver.ProgramStringNotify() after a new vertex program string has been parsed.

static GLboolean do_ndc_cliptest	(	GLcontext *	ctx,
		struct vp_stage_data *	store
	)			[static]

XXX NEW_SLANG _Enabled ???

static void dtr

(

struct tnl_pipeline_stage *

stage

)

[static]

Destructor for this pipeline stage.

static void init_machine	(	GLcontext *	ctx,
		struct gl_program_machine *	machine
	)			[static]

Initialize virtual machine state prior to executing vertex program.

static GLboolean init_vp	(	GLcontext *	ctx,
		struct tnl_pipeline_stage *	stage
	)			[static]

Called the first time stage->run is called.

In effect, don't allocate data until the first time the stage is run.

static void map_textures	(	GLcontext *	ctx,
		const struct gl_vertex_program *	vp
	)			[static]

Map the texture images which the vertex program will access (if any).

static GLboolean run_vp	(	GLcontext *	ctx,
		struct tnl_pipeline_stage *	stage
	)			[static]

This function executes vertex programs.

static void unmap_textures	(	GLcontext *	ctx,
		const struct gl_vertex_program *	vp
	)			[static]

Unmap the texture images which were used by the vertex program (if any).

static void userclip	(	GLcontext *	ctx,
		GLvector4f *	clip,
		GLubyte *	clipmask,
		GLubyte *	clipormask,
		GLubyte *	clipandmask
	)			[static]

static void validate_vp_stage	(	GLcontext *	ctx,
		struct tnl_pipeline_stage *	stage
	)			[static]

static void vp_fetch_texel	(	GLcontext *	ctx,
		const GLfloat	texcoord[4],
		GLfloat	lambda,
		GLuint	unit,
		GLfloat	color[4]
	)			[static]

XXX the texture sampling code in this module is a bit of a hack.

The texture sampling code is in swrast, though it doesn't have any real dependencies on the rest of swrast. It should probably be moved into main/ someday.

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Variable Documentation

struct tnl_pipeline_stage _tnl_vertex_program_stage

Initial value:

{
   "vertex-program",
   NULL,                        
   init_vp,                     
   dtr,                         
   validate_vp_stage,           
   run_vp                       
}

Public description of this pipeline stage.

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