static struct ureg get_eye_normal( struct tnl_program *p )
{
if (is_undef(p->eye_normal)) {
struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
struct ureg mvinv[3];
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 2,
STATE_MATRIX_INVTRANS, mvinv );
p->eye_normal = reserve_temp(p);
/* Transform to eye space:
*/
emit_matrix_transform_vec3( p, p->eye_normal, mvinv, normal );
/* Normalize/Rescale:
*/
if (p->state->normalize) {
emit_normalize_vec3( p, p->eye_normal, p->eye_normal );
}
else if (p->state->rescale_normals) {
struct ureg rescale = register_param2(p, STATE_INTERNAL,
STATE_NORMAL_SCALE);
emit_op2( p, OPCODE_MUL, p->eye_normal, 0, p->eye_normal,
swizzle1(rescale, X));
}
}
return p->eye_normal;
}
static void build_hpos( struct tnl_program *p )
{
struct ureg pos = register_input( p, VERT_ATTRIB_POS );
struct ureg hpos = register_output( p, VERT_RESULT_HPOS );
struct ureg mvp[4];
if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_MVP_MATRIX, 0, 0, 3,
0, mvp );
emit_matrix_transform_vec4( p, hpos, mvp, pos );
}
else {
register_matrix_param5( p, STATE_MVP_MATRIX, 0, 0, 3,
STATE_MATRIX_TRANSPOSE, mvp );
emit_transpose_matrix_transform_vec4( p, hpos, mvp, pos );
}
}
static struct ureg get_eye_position( struct tnl_program *p )
{
if (is_undef(p->eye_position)) {
struct ureg pos = register_input( p, VERT_ATTRIB_POS );
struct ureg modelview[4];
p->eye_position = reserve_temp(p);
if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
0, modelview );
emit_matrix_transform_vec4(p, p->eye_position, modelview, pos);
}
else {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
STATE_MATRIX_TRANSPOSE, modelview );
emit_transpose_matrix_transform_vec4(p, p->eye_position, modelview, pos);
}
}
return p->eye_position;
}
static struct ureg get_transformed_normal( struct tnl_program *p )
{
if (is_undef(p->transformed_normal) &&
!p->state->need_eye_coords &&
!p->state->normalize &&
!(p->state->need_eye_coords == p->state->rescale_normals))
{
p->transformed_normal = register_input(p, VERT_ATTRIB_NORMAL );
}
else if (is_undef(p->transformed_normal))
{
struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
struct ureg mvinv[3];
struct ureg transformed_normal = reserve_temp(p);
if (p->state->need_eye_coords) {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 2,
STATE_MATRIX_INVTRANS, mvinv );
/* Transform to eye space:
*/
emit_matrix_transform_vec3( p, transformed_normal, mvinv, normal );
normal = transformed_normal;
}
/* Normalize/Rescale:
*/
if (p->state->normalize) {
emit_normalize_vec3( p, transformed_normal, normal );
normal = transformed_normal;
}
else if (p->state->need_eye_coords == p->state->rescale_normals) {
/* This is already adjusted for eye/non-eye rendering:
*/
struct ureg rescale = register_param2(p, STATE_INTERNAL,
STATE_NORMAL_SCALE);
emit_op2( p, OPCODE_MUL, transformed_normal, 0, normal, rescale );
normal = transformed_normal;
}
assert(normal.file == PROGRAM_TEMPORARY);
p->transformed_normal = normal;
}
return p->transformed_normal;
}
static struct ureg get_eye_position_z( struct tnl_program *p )
{
if (!is_undef(p->eye_position))
return swizzle1(p->eye_position, Z);
if (is_undef(p->eye_position_z)) {
struct ureg pos = register_input( p, VERT_ATTRIB_POS );
struct ureg modelview[4];
p->eye_position_z = reserve_temp(p);
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
0, modelview );
emit_op2(p, OPCODE_DP4, p->eye_position_z, 0, pos, modelview[2]);
}
return p->eye_position_z;
}
static void build_texture_transform( struct tnl_program *p )
{
GLuint i, j;
for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
if (!(p->state->fragprog_inputs_read & FRAG_BIT_TEX(i)))
continue;
if (p->state->unit[i].texgen_enabled ||
p->state->unit[i].texmat_enabled) {
GLuint texmat_enabled = p->state->unit[i].texmat_enabled;
struct ureg out = register_output(p, VERT_RESULT_TEX0 + i);
struct ureg out_texgen = undef;
if (p->state->unit[i].texgen_enabled) {
GLuint copy_mask = 0;
GLuint sphere_mask = 0;
GLuint reflect_mask = 0;
GLuint normal_mask = 0;
GLuint modes[4];
if (texmat_enabled)
out_texgen = get_temp(p);
else
out_texgen = out;
modes[0] = p->state->unit[i].texgen_mode0;
modes[1] = p->state->unit[i].texgen_mode1;
modes[2] = p->state->unit[i].texgen_mode2;
modes[3] = p->state->unit[i].texgen_mode3;
for (j = 0; j < 4; j++) {
switch (modes[j]) {
case TXG_OBJ_LINEAR: {
struct ureg obj = register_input(p, VERT_ATTRIB_POS);
struct ureg plane =
register_param3(p, STATE_TEXGEN, i,
STATE_TEXGEN_OBJECT_S + j);
emit_op2(p, OPCODE_DP4, out_texgen, WRITEMASK_X << j,
obj, plane );
break;
}
case TXG_EYE_LINEAR: {
struct ureg eye = get_eye_position(p);
struct ureg plane =
register_param3(p, STATE_TEXGEN, i,
STATE_TEXGEN_EYE_S + j);
emit_op2(p, OPCODE_DP4, out_texgen, WRITEMASK_X << j,
eye, plane );
break;
}
case TXG_SPHERE_MAP:
sphere_mask |= WRITEMASK_X << j;
break;
case TXG_REFLECTION_MAP:
reflect_mask |= WRITEMASK_X << j;
break;
case TXG_NORMAL_MAP:
normal_mask |= WRITEMASK_X << j;
break;
case TXG_NONE:
copy_mask |= WRITEMASK_X << j;
}
}
if (sphere_mask) {
build_sphere_texgen(p, out_texgen, sphere_mask);
}
if (reflect_mask) {
build_reflect_texgen(p, out_texgen, reflect_mask);
}
if (normal_mask) {
struct ureg normal = get_transformed_normal(p);
emit_op1(p, OPCODE_MOV, out_texgen, normal_mask, normal );
}
if (copy_mask) {
struct ureg in = register_input(p, VERT_ATTRIB_TEX0+i);
emit_op1(p, OPCODE_MOV, out_texgen, copy_mask, in );
}
}
if (texmat_enabled) {
struct ureg texmat[4];
struct ureg in = (!is_undef(out_texgen) ?
out_texgen :
register_input(p, VERT_ATTRIB_TEX0+i));
if (p->mvp_with_dp4) {
register_matrix_param5( p, STATE_TEXTURE_MATRIX, i, 0, 3,
0, texmat );
emit_matrix_transform_vec4( p, out, texmat, in );
}
else {
register_matrix_param5( p, STATE_TEXTURE_MATRIX, i, 0, 3,
STATE_MATRIX_TRANSPOSE, texmat );
emit_transpose_matrix_transform_vec4( p, out, texmat, in );
}
}
release_temps(p);
}
else {
emit_passthrough(p, VERT_ATTRIB_TEX0+i, VERT_RESULT_TEX0+i);
}
}
}
