prog_statevars.h File Reference

#include "main/mtypes.h"

Defines
#define	STATE_LENGTH   5
	Number of STATE_* values we need to address any GL state.
Typedefs
typedef enum gl_state_index_	gl_state_index
Enumerations
enum	gl_state_index_ {   STATE_MATERIAL = 100, STATE_LIGHT, STATE_LIGHTMODEL_AMBIENT, STATE_LIGHTMODEL_SCENECOLOR,   STATE_LIGHTPROD, STATE_TEXGEN, STATE_FOG_COLOR, STATE_FOG_PARAMS,   STATE_CLIPPLANE, STATE_POINT_SIZE, STATE_POINT_ATTENUATION, STATE_MODELVIEW_MATRIX,   STATE_PROJECTION_MATRIX, STATE_MVP_MATRIX, STATE_TEXTURE_MATRIX, STATE_PROGRAM_MATRIX,   STATE_COLOR_MATRIX, STATE_MATRIX_INVERSE, STATE_MATRIX_TRANSPOSE, STATE_MATRIX_INVTRANS,   STATE_AMBIENT, STATE_DIFFUSE, STATE_SPECULAR, STATE_EMISSION,   STATE_SHININESS, STATE_HALF_VECTOR, STATE_POSITION, STATE_ATTENUATION,   STATE_SPOT_DIRECTION, STATE_SPOT_CUTOFF, STATE_TEXGEN_EYE_S, STATE_TEXGEN_EYE_T,   STATE_TEXGEN_EYE_R, STATE_TEXGEN_EYE_Q, STATE_TEXGEN_OBJECT_S, STATE_TEXGEN_OBJECT_T,   STATE_TEXGEN_OBJECT_R, STATE_TEXGEN_OBJECT_Q, STATE_TEXENV_COLOR, STATE_DEPTH_RANGE,   STATE_VERTEX_PROGRAM, STATE_FRAGMENT_PROGRAM, STATE_ENV, STATE_LOCAL,   STATE_INTERNAL, STATE_CURRENT_ATTRIB, STATE_NORMAL_SCALE, STATE_TEXRECT_SCALE,   STATE_FOG_PARAMS_OPTIMIZED, STATE_LIGHT_SPOT_DIR_NORMALIZED, STATE_LIGHT_POSITION, STATE_LIGHT_POSITION_NORMALIZED,   STATE_LIGHT_HALF_VECTOR, STATE_PT_SCALE, STATE_PT_BIAS, STATE_PCM_SCALE,   STATE_PCM_BIAS, STATE_SHADOW_AMBIENT, STATE_FB_SIZE, STATE_ROT_MATRIX_0,   STATE_ROT_MATRIX_1, STATE_INTERNAL_DRIVER }
	Used for describing GL state referenced from inside ARB vertex and fragment programs. More...
Functions
void	_mesa_load_state_parameters (GLcontext *ctx, struct gl_program_parameter_list *paramList)
	Loop over all the parameters in a parameter list.
GLbitfield	_mesa_program_state_flags (const gl_state_index state[STATE_LENGTH])
	Return a bitmask of the Mesa state flags (_NEW_* values) which would indicate that the given context state may have changed.
char *	_mesa_program_state_string (const gl_state_index state[STATE_LENGTH])
	Make a string from the given state vector.
void	_mesa_load_tracked_matrices (GLcontext *ctx)
	Load current vertex program's parameter registers with tracked matrices (if NV program).

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Define Documentation

#define STATE_LENGTH   5

Number of STATE_* values we need to address any GL state.

Used to dimension arrays.

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Typedef Documentation

typedef enum gl_state_index_ gl_state_index

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Enumeration Type Documentation

enum gl_state_index_

Used for describing GL state referenced from inside ARB vertex and fragment programs.

A string such as "state.light[0].ambient" gets translated into a sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].

For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should always be the array index.

Enumerator:

STATE_MATERIAL
STATE_LIGHT
STATE_LIGHTMODEL_AMBIENT
STATE_LIGHTMODEL_SCENECOLOR
STATE_LIGHTPROD
STATE_TEXGEN
STATE_FOG_COLOR
STATE_FOG_PARAMS
STATE_CLIPPLANE
STATE_POINT_SIZE
STATE_POINT_ATTENUATION
STATE_MODELVIEW_MATRIX
STATE_PROJECTION_MATRIX
STATE_MVP_MATRIX
STATE_TEXTURE_MATRIX
STATE_PROGRAM_MATRIX
STATE_COLOR_MATRIX
STATE_MATRIX_INVERSE
STATE_MATRIX_TRANSPOSE
STATE_MATRIX_INVTRANS
STATE_AMBIENT
STATE_DIFFUSE
STATE_SPECULAR
STATE_EMISSION
STATE_SHININESS
STATE_HALF_VECTOR
STATE_POSITION	xyzw = position
STATE_ATTENUATION	xyz = attenuation, w = spot exponent
STATE_SPOT_DIRECTION	xyz = direction, w = cos(cutoff)
STATE_SPOT_CUTOFF	x = cutoff, yzw = undefined
STATE_TEXGEN_EYE_S
STATE_TEXGEN_EYE_T
STATE_TEXGEN_EYE_R
STATE_TEXGEN_EYE_Q
STATE_TEXGEN_OBJECT_S
STATE_TEXGEN_OBJECT_T
STATE_TEXGEN_OBJECT_R
STATE_TEXGEN_OBJECT_Q
STATE_TEXENV_COLOR
STATE_DEPTH_RANGE
STATE_VERTEX_PROGRAM
STATE_FRAGMENT_PROGRAM
STATE_ENV
STATE_LOCAL
STATE_INTERNAL
STATE_CURRENT_ATTRIB
STATE_NORMAL_SCALE
STATE_TEXRECT_SCALE
STATE_FOG_PARAMS_OPTIMIZED
STATE_LIGHT_SPOT_DIR_NORMALIZED
STATE_LIGHT_POSITION
STATE_LIGHT_POSITION_NORMALIZED
STATE_LIGHT_HALF_VECTOR
STATE_PT_SCALE	Pixel transfer RGBA scale.
STATE_PT_BIAS	Pixel transfer RGBA bias.
STATE_PCM_SCALE	Post color matrix RGBA scale.
STATE_PCM_BIAS	Post color matrix RGBA bias.
STATE_SHADOW_AMBIENT	ARB_shadow_ambient fail value; token[2] is texture unit index.
STATE_FB_SIZE	(width-1, height-1, 0, 0)
STATE_ROT_MATRIX_0	ATI_envmap_bumpmap, rot matrix row 0.
STATE_ROT_MATRIX_1	ATI_envmap_bumpmap, rot matrix row 1.
STATE_INTERNAL_DRIVER

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Function Documentation

void _mesa_load_state_parameters	(	GLcontext *	ctx,
		struct gl_program_parameter_list *	paramList
	)

Loop over all the parameters in a parameter list.

If the parameter is a GL state reference, look up the current value of that state variable and put it into the parameter's Value[4] array. This would be called at glBegin time when using a fragment program.

void _mesa_load_tracked_matrices

(

GLcontext *

ctx

)

Load current vertex program's parameter registers with tracked matrices (if NV program).

This only needs to be done per glBegin/glEnd, not per-vertex.

GLbitfield _mesa_program_state_flags

(

const gl_state_index

state[STATE_LENGTH]

)

Return a bitmask of the Mesa state flags (_NEW_* values) which would indicate that the given context state may have changed.

The bitmask is used during validation to determine if we need to update vertex/fragment program parameters (like "state.material.color") when some GL state has changed.

char* _mesa_program_state_string

(

const gl_state_index

state[STATE_LENGTH]

)

Make a string from the given state vector.

For example, return "state.matrix.texture[2].inverse". Use _mesa_free() to deallocate the string.

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