-
-
-static struct ureg make_ureg(GLuint file, GLuint idx)
-{
- struct ureg reg;
- reg.file = file;
- reg.idx = idx;
- reg.negatebase = 0;
- reg.swz = SWIZZLE_NOOP;
- reg.pad = 0;
- return reg;
-}
-
-static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
-{
- reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
- GET_SWZ(reg.swz, y),
- GET_SWZ(reg.swz, z),
- GET_SWZ(reg.swz, w));
-
- return reg;
-}
-
-static struct ureg swizzle1( struct ureg reg, int x )
-{
- return swizzle(reg, x, x, x, x);
-}
-
-static struct ureg negate( struct ureg reg )
-{
- reg.negatebase ^= 1;
- return reg;
-}
-
-static GLboolean is_undef( struct ureg reg )
-{
- return reg.file == PROGRAM_UNDEFINED;
-}
-
-
-static struct ureg get_temp( struct texenv_fragment_program *p )
-{
- GLint bit;
-
- /* First try and reuse temps which have been used already:
- */
- bit = _mesa_ffs( ~p->temp_in_use & p->alu_temps );
-
- /* Then any unused temporary:
- */
- if (!bit)
- bit = _mesa_ffs( ~p->temp_in_use );
-
- if (!bit) {
- _mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
- exit(1);
- }
-
- if ((GLuint) bit > p->program->Base.NumTemporaries)
- p->program->Base.NumTemporaries = bit;
-
- p->temp_in_use |= 1<<(bit-1);
- return make_ureg(PROGRAM_TEMPORARY, (bit-1));
-}
-
-static struct ureg get_tex_temp( struct texenv_fragment_program *p )
-{
- int bit;
-
- /* First try to find available temp not previously used (to avoid
- * starting a new texture indirection). According to the spec, the
- * ~p->temps_output isn't necessary, but will keep it there for
- * now:
- */
- bit = _mesa_ffs( ~p->temp_in_use & ~p->alu_temps & ~p->temps_output );
-
- /* Then any unused temporary:
- */
- if (!bit)
- bit = _mesa_ffs( ~p->temp_in_use );
-
- if (!bit) {
- _mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
- exit(1);
- }
-
- if ((GLuint) bit > p->program->Base.NumTemporaries)
- p->program->Base.NumTemporaries = bit;
-
- p->temp_in_use |= 1<<(bit-1);
- return make_ureg(PROGRAM_TEMPORARY, (bit-1));
-}
-
-
-/** Mark a temp reg as being no longer allocatable. */
-static void reserve_temp( struct texenv_fragment_program *p, struct ureg r )
-{
- if (r.file == PROGRAM_TEMPORARY)
- p->temps_output |= (1 << r.idx);
-}
-
-
-static void release_temps(struct gl_context *ctx, struct texenv_fragment_program *p )
-{
- GLuint max_temp = ctx->Const.FragmentProgram.MaxTemps;
-
- /* KW: To support tex_env_crossbar, don't release the registers in
- * temps_output.
- */
- if (max_temp >= sizeof(int) * 8)
- p->temp_in_use = p->temps_output;
- else
- p->temp_in_use = ~((1<<max_temp)-1) | p->temps_output;
-}
-
-
-static struct ureg register_param5( struct texenv_fragment_program *p,
- GLint s0,
- GLint s1,
- GLint s2,
- GLint s3,
- GLint s4)
-{
- int tokens[STATE_LENGTH];
- GLuint idx;
- tokens[0] = s0;
- tokens[1] = s1;
- tokens[2] = s2;
- tokens[3] = s3;
- tokens[4] = s4;
- idx = _mesa_add_state_reference(p->program->Base.Parameters,
- (gl_state_index *)tokens);
- return make_ureg(PROGRAM_STATE_VAR, idx);
-}
-
-
-#define register_param1(p,s0) register_param5(p,s0,0,0,0,0)
-#define register_param2(p,s0,s1) register_param5(p,s0,s1,0,0,0)
-#define register_param3(p,s0,s1,s2) register_param5(p,s0,s1,s2,0,0)
-#define register_param4(p,s0,s1,s2,s3) register_param5(p,s0,s1,s2,s3,0)
-
-static GLuint frag_to_vert_attrib( GLuint attrib )
-{
- switch (attrib) {
- case FRAG_ATTRIB_COL0: return VERT_ATTRIB_COLOR0;
- case FRAG_ATTRIB_COL1: return VERT_ATTRIB_COLOR1;
- default:
- assert(attrib >= FRAG_ATTRIB_TEX0);
- assert(attrib <= FRAG_ATTRIB_TEX7);
- return attrib - FRAG_ATTRIB_TEX0 + VERT_ATTRIB_TEX0;
- }
-}
-
-
-static struct ureg register_input( struct texenv_fragment_program *p, GLuint input )
-{
- if (p->state->inputs_available & (1<<input)) {
- p->program->Base.InputsRead |= (1 << input);
- return make_ureg(PROGRAM_INPUT, input);
- }
- else {
- GLuint idx = frag_to_vert_attrib( input );
- return register_param3( p, STATE_INTERNAL, STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED, idx );
- }
-}
-
-
-static void emit_arg( struct prog_src_register *reg,
- struct ureg ureg )
-{
- reg->File = ureg.file;
- reg->Index = ureg.idx;
- reg->Swizzle = ureg.swz;
- reg->Negate = ureg.negatebase ? NEGATE_XYZW : NEGATE_NONE;
- reg->Abs = GL_FALSE;
-}
-
-static void emit_dst( struct prog_dst_register *dst,
- struct ureg ureg, GLuint mask )
-{
- dst->File = ureg.file;
- dst->Index = ureg.idx;
- dst->WriteMask = mask;
- dst->CondMask = COND_TR; /* always pass cond test */
- dst->CondSwizzle = SWIZZLE_NOOP;
-}
-
-static struct prog_instruction *
-emit_op(struct texenv_fragment_program *p,
- enum prog_opcode op,
- struct ureg dest,
- GLuint mask,
- GLboolean saturate,
- struct ureg src0,
- struct ureg src1,
- struct ureg src2 )
-{
- const GLuint nr = p->program->Base.NumInstructions++;
- struct prog_instruction *inst = &p->program->Base.Instructions[nr];
-
- assert(nr < MAX_INSTRUCTIONS);
-
- _mesa_init_instructions(inst, 1);
- inst->Opcode = op;
-
- emit_arg( &inst->SrcReg[0], src0 );
- emit_arg( &inst->SrcReg[1], src1 );
- emit_arg( &inst->SrcReg[2], src2 );
-
- inst->SaturateMode = saturate ? SATURATE_ZERO_ONE : SATURATE_OFF;
-
- emit_dst( &inst->DstReg, dest, mask );
-
-#if 0
- /* Accounting for indirection tracking:
- */
- if (dest.file == PROGRAM_TEMPORARY)
- p->temps_output |= 1 << dest.idx;
-#endif
-
- return inst;
-}
-
-
-static struct ureg emit_arith( struct texenv_fragment_program *p,
- enum prog_opcode op,
- struct ureg dest,
- GLuint mask,
- GLboolean saturate,
- struct ureg src0,
- struct ureg src1,
- struct ureg src2 )