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st/nine: Introduce helper for Position shader input

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Cc: "11.2" <mesa-stable@lists.freedesktop.org>

Signed-off-by: Axel Davy <axel.davy@ens.fr>
This commit is contained in:
Axel Davy 2016-02-21 16:30:15 +01:00
parent f1d12e7392
commit f08c990af5
1 changed files with 15 additions and 16 deletions
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31
src/gallium/state_trackers/nine/nine_shader.c
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@ -830,6 +830,18 @@ nine_ureg_dst_register(unsigned file, int index)
return ureg_dst(ureg_src_register(file, index));
}
static inline struct ureg_src
nine_get_position_input(struct shader_translator *tx)
{
struct ureg_program *ureg = tx->ureg;
if (tx->wpos_is_sysval)
return ureg_DECL_system_value(ureg, TGSI_SEMANTIC_POSITION, 0);
else
return ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_POSITION,
0, TGSI_INTERPOLATE_LINEAR);
}
static struct ureg_src
tx_src_param(struct shader_translator *tx, const struct sm1_src_param *param)
{
@ -955,16 +967,8 @@ tx_src_param(struct shader_translator *tx, const struct sm1_src_param *param)
case D3DSPR_MISCTYPE:
switch (param->idx) {
case D3DSMO_POSITION:
if (ureg_src_is_undef(tx->regs.vPos)) {
if (tx->wpos_is_sysval) {
tx->regs.vPos =
ureg_DECL_system_value(ureg, TGSI_SEMANTIC_POSITION, 0);
} else {
tx->regs.vPos =
ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_POSITION, 0,
TGSI_INTERPOLATE_LINEAR);
}
}
if (ureg_src_is_undef(tx->regs.vPos))
tx->regs.vPos = nine_get_position_input(tx);
if (tx->shift_wpos) {
/* TODO: do this only once */
struct ureg_dst wpos = tx_scratch(tx);
@ -3269,12 +3273,7 @@ shader_add_ps_fog_stage(struct shader_translator *tx, struct ureg_src src_col)
}
if (tx->info->fog_mode != D3DFOG_NONE) {
if (tx->wpos_is_sysval) {
depth = ureg_DECL_system_value(ureg, TGSI_SEMANTIC_POSITION, 0);
} else {
depth = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_POSITION, 0,
TGSI_INTERPOLATE_LINEAR);
}
depth = nine_get_position_input(tx);
depth = ureg_scalar(depth, TGSI_SWIZZLE_Z);
}