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st/mesa: put fragment wpos code into separate function

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This commit is contained in:
Brian Paul
2010-04-05 21:59:05 -06:00
parent 848945e5d6
commit 489eced800
1 changed files with 60 additions and 46 deletions
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src/mesa/state_tracker/st_mesa_to_tgsi.c
+60 -46
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@@ -738,6 +738,65 @@ emit_inverted_wpos( struct st_translate *t,
}
/**
* Emit fragment position/ooordinate code.
*/
static void
emit_wpos(struct st_context *st,
struct st_translate *t,
const struct gl_program *program,
struct ureg_program *ureg)
{
const struct gl_fragment_program *fp =
(const struct gl_fragment_program *) program;
struct pipe_screen *pscreen = st->pipe->screen;
boolean invert = FALSE;
if (fp->OriginUpperLeft) {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) {
}
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) {
ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
invert = TRUE;
}
else
assert(0);
}
else {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT))
ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT))
invert = TRUE;
else
assert(0);
}
if (fp->PixelCenterInteger) {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER))
ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER))
emit_adjusted_wpos(t, program, invert ? 0.5f : -0.5f);
else
assert(0);
}
else {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) {
}
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) {
ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
emit_adjusted_wpos(t, program, invert ? -0.5f : 0.5f);
}
else
assert(0);
}
/* we invert after adjustment so that we avoid the MOV to temporary,
* and reuse the adjustment ADD instead */
if (invert)
emit_inverted_wpos(t, program);
}
/**
* OpenGL's fragment gl_FrontFace input is 1 for front-facing, 0 for back.
* TGSI uses +1 for front, -1 for back.
@@ -831,7 +890,6 @@ st_translate_mesa_program(
* Declare input attributes.
*/
if (procType == TGSI_PROCESSOR_FRAGMENT) {
struct gl_fragment_program* fp = (struct gl_fragment_program*)program;
for (i = 0; i < numInputs; i++) {
if (program->InputFlags[0] & PROG_PARAM_BIT_CYL_WRAP) {
t->inputs[i] = ureg_DECL_fs_input_cyl(ureg,
@@ -852,51 +910,7 @@ st_translate_mesa_program(
/* Must do this after setting up t->inputs, and before
* emitting constant references, below:
*/
struct pipe_screen* pscreen = st_context(ctx)->pipe->screen;
boolean invert = FALSE;
if (fp->OriginUpperLeft) {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) {
}
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) {
ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
invert = TRUE;
}
else
assert(0);
}
else {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT))
ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT))
invert = TRUE;
else
assert(0);
}
if (fp->PixelCenterInteger) {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER))
ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER))
emit_adjusted_wpos(t, program, invert ? 0.5f : -0.5f);
else
assert(0);
}
else {
if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) {
}
else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) {
ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
emit_adjusted_wpos(t, program, invert ? -0.5f : 0.5f);
}
else
assert(0);
}
/* we invert after adjustment so that we avoid the MOV to temporary,
* and reuse the adjustment ADD instead */
if (invert)
emit_inverted_wpos(t, program);
emit_wpos(st_context(ctx), t, program, ureg);
}
if (program->InputsRead & FRAG_BIT_FACE) {