struct gl_fragment_program_state {
	unsigned char _Enabled;
	struct gl_fragment_program *_TexEnvProgram;
};
struct gl_shader_state {
	struct gl_shader_program *CurrentProgram;
};
struct gl_constants {
	unsigned int MaxTextureUnits;
} GLvertexformat;
typedef struct {
	struct gl_constants Const;
	struct gl_fragment_program_state FragmentProgram;
	struct gl_shader_state Shader;
} GLcontext;
struct mode_opt {
	unsigned int Source:4;
	unsigned int Operand:3;
};
struct state_key {
	unsigned int enabled_units;
	struct {
		unsigned int NumArgsRGB:2;
		unsigned int ModeRGB:4;
		struct mode_opt OptRGB[3];
		unsigned int ModeA:4;
	} unit[8];
};
struct ureg {
	unsigned int file:4;
	unsigned int idx:8;
};
static const struct ureg undef = {
	0, ~0, 0, 0, 0, 0, 0
};
struct texenv_fragment_program {
	struct state_key *state;
	struct ureg src_texture[8];
	struct ureg src_previous;
	unsigned int last_tex_stage;
};
static struct ureg get_temp(struct texenv_fragment_program *p)
{
}
static struct ureg register_const4f(struct texenv_fragment_program *p,
				    float s0, float s1, float s2,
				    float s3)
{
}
static struct ureg emit_combine_source(struct texenv_fragment_program *p,
				       unsigned int mask, unsigned int unit, unsigned int source,
				       unsigned int operand)
{
}
static struct ureg emit_combine(struct texenv_fragment_program *p,
				struct ureg dest, unsigned int mask,
				unsigned char saturate, unsigned int unit, unsigned int nr,
				unsigned int mode, const struct mode_opt *opt)
{
	struct ureg src[3];
	unsigned int i;
	for (i = 0; i < nr; i++)
		src[i] =
		    emit_combine_source(p, mask, unit, opt[i].Source,
					opt[i].Operand);
	switch (mode) {
	case 6:{
			struct ureg tmp0;
			struct ureg neg1;
			struct ureg two;
neg1 = register_const4f(p, -1, -1, -1, -1);
two = register_const4f(p, 2, 2, 2, 2);
			emit_arith(p, 0, tmp0, 0xf, 0, two, src[0],
				   neg1);
		}
	}
}
static struct ureg emit_texenv(struct texenv_fragment_program *p, unsigned int unit)
{
	struct state_key *key;
	unsigned char saturate;
	struct ureg out;
struct ureg shift;
	struct ureg dest;
key = p->state;
saturate  = (unit < p->last_tex_stage);
	if (key->unit[unit].ModeRGB == key->unit[unit].ModeA
	    && args_match(key, unit))
		out =
		    emit_combine(p, dest, 0xf, saturate, unit,
				 key->unit[unit].NumArgsRGB,
				 key->unit[unit].ModeRGB,
				 key->unit[unit].OptRGB);
}
static void create_new_program(GLcontext * ctx, struct state_key *key,
			       struct gl_fragment_program *program)
{
	struct texenv_fragment_program p;
	unsigned int unit;
	for (unit = 0; unit < 8; unit++)
		p.src_texture[unit] = undef;
	if (key->enabled_units)
		for (unit = 0; unit < ctx->Const.MaxTextureUnits; unit++)
			if (key->enabled_units & (1 << unit))
				p.src_previous = emit_texenv(&p, unit);
}
void _mesa_UpdateTexEnvProgram(GLcontext * ctx)
{
	struct state_key key;
	if (!ctx->FragmentProgram._Enabled && !ctx->Shader.CurrentProgram)
		if (!ctx->FragmentProgram._TexEnvProgram)
			create_new_program(ctx, &key,
					   ctx->FragmentProgram._TexEnvProgram);
}