diff options
| author | Nicolai Haehnle <nhaehnle@gmail.com> | 2008-07-06 19:48:50 +0200 |
|---|---|---|
| committer | Nicolai Haehnle <nhaehnle@gmail.com> | 2008-07-12 09:36:02 +0200 |
| commit | d8d086c20b5a43353c4980cf234d8329900585f5 (patch) | |
| tree | 6d88f83ba0763080a16c36a4e028e520a7d34848 /src/mesa/drivers/dri/r300/r500_fragprog_emit.c | |
| parent | 7904c9fad4c2cb2a4153258a9e86e530a0330a78 (diff) | |
r500: Add "Not quite SSA" and dead code elimination pass
In addition, this pass fixes non-native swizzles.
Diffstat (limited to 'src/mesa/drivers/dri/r300/r500_fragprog_emit.c')
| -rw-r--r-- | src/mesa/drivers/dri/r300/r500_fragprog_emit.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/src/mesa/drivers/dri/r300/r500_fragprog_emit.c b/src/mesa/drivers/dri/r300/r500_fragprog_emit.c index 4f65803953..275911679d 100644 --- a/src/mesa/drivers/dri/r300/r500_fragprog_emit.c +++ b/src/mesa/drivers/dri/r300/r500_fragprog_emit.c @@ -163,23 +163,30 @@ static const struct prog_dst_register dstreg_template = { .WriteMask = WRITEMASK_XYZW }; +static INLINE GLuint fix_hw_swizzle(GLuint swz) +{ + if (swz == 5) swz = 6; + if (swz == SWIZZLE_NIL) swz = 4; + return swz; +} + static INLINE GLuint make_rgb_swizzle(struct prog_src_register src) { GLuint swiz = 0x0; GLuint temp; /* This could be optimized, but it should be plenty fast already. */ int i; + int negatebase = 0; for (i = 0; i < 3; i++) { - temp = GET_SWZ(src.Swizzle, i); - /* Fix SWIZZLE_ONE */ - if (temp == 5) temp++; + temp = GET_SWZ(src.Swizzle, i); + if (temp != SWIZZLE_NIL && GET_BIT(src.NegateBase, i)) + negatebase = 1; + temp = fix_hw_swizzle(temp); swiz |= temp << i*3; } - if (src.Abs) { + if (src.Abs) swiz |= R500_SWIZ_MOD_ABS << 9; - } else if (src.NegateBase & 7) { - ASSERT((src.NegateBase & 7) == 7); + else if (negatebase) swiz |= R500_SWIZ_MOD_NEG << 9; - } if (src.NegateAbs) swiz ^= R500_SWIZ_MOD_NEG << 9; return swiz; @@ -191,8 +198,7 @@ static INLINE GLuint make_rgba_swizzle(GLuint src) { int i; for (i = 0; i < 4; i++) { temp = GET_SWZ(src, i); - /* Fix SWIZZLE_ONE */ - if (temp == 5) temp++; + temp = fix_hw_swizzle(temp); swiz |= temp << i*3; } return swiz; @@ -201,7 +207,7 @@ static INLINE GLuint make_rgba_swizzle(GLuint src) { static INLINE GLuint make_alpha_swizzle(struct prog_src_register src) { GLuint swiz = GET_SWZ(src.Swizzle, 3); - if (swiz == 5) swiz++; + swiz = fix_hw_swizzle(swiz); if (src.Abs) { swiz |= R500_SWIZ_MOD_ABS << 3; @@ -217,7 +223,7 @@ static INLINE GLuint make_alpha_swizzle(struct prog_src_register src) { static INLINE GLuint make_sop_swizzle(struct prog_src_register src) { GLuint swiz = GET_SWZ(src.Swizzle, 0); - if (swiz == 5) swiz++; + swiz = fix_hw_swizzle(swiz); if (src.Abs) { swiz |= R500_SWIZ_MOD_ABS << 3; |