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Diffstat (limited to 'src/mesa/pipe/cell/spu/spu_tri.c')
-rw-r--r--src/mesa/pipe/cell/spu/spu_tri.c222
1 files changed, 26 insertions, 196 deletions
diff --git a/src/mesa/pipe/cell/spu/spu_tri.c b/src/mesa/pipe/cell/spu/spu_tri.c
index a32878d917..a26a4f098d 100644
--- a/src/mesa/pipe/cell/spu/spu_tri.c
+++ b/src/mesa/pipe/cell/spu/spu_tri.c
@@ -39,18 +39,11 @@
#include "spu_tile.h"
#include "spu_tri.h"
+#include "spu_ztest.h"
-/*
- * If SIMD_Z=1 the Z buffer is floating point and we use vector instructions
- * to do Z testing/updating.
- */
-#define SIMD_Z 0
-#if SIMD_Z
+/** Masks are uint[4] vectors with each element being 0 or 0xffffffff */
typedef vector unsigned int mask_t;
-#else
-typedef uint mask_t;
-#endif
/**
@@ -282,20 +275,11 @@ pack_colors(uint uicolors[4], const float4 fcolors[4])
}
-
-static unsigned int
-do_depth_test(int x, int y, unsigned int mask)
+static INLINE mask_t
+do_depth_test(int x, int y, mask_t quadmask)
{
- static const float4 zscale16
- = {.f={65535.0, 65535.0, 65535.0, 65535.0}};
- static const float4 zscale32
- = {.f={(float)0xffffffff,
- (float)0xffffffff,
- (float)0xffffffff,
- (float)0xffffffff}};
- int ix = x - setup.cliprect_minx;
- int iy = y - setup.cliprect_miny;
float4 zvals;
+ mask_t mask;
zvals.v = eval_z((float) x, (float) y);
@@ -305,129 +289,20 @@ do_depth_test(int x, int y, unsigned int mask)
cur_tile_status_z = TILE_STATUS_DIRTY;
}
-#if 0
- if (cur_tile_status_z == TILE_STATUS_CLEAR) {
- /* now, _really_ clear the tile */
- clear_z_tile(&ztile);
- }
- else if (cur_tile_status_z != TILE_STATUS_DIRTY) {
- /* make sure we've got the tile from main mem */
- wait_on_mask(1 << TAG_READ_TILE_Z);
- }
- cur_tile_status_z = TILE_STATUS_DIRTY;
-#endif
-
if (spu.fb.depth_format == PIPE_FORMAT_Z16_UNORM) {
- zvals.v = spu_mul(zvals.v, zscale16.v);
- if (mask & MASK_TOP_LEFT) {
- uint z = (uint) zvals.f[0];
- if (z < ztile.t16[iy][ix])
- ztile.t16[iy][ix] = z;
- else
- mask &= ~MASK_TOP_LEFT;
- }
-
- if (mask & MASK_TOP_RIGHT) {
- uint z = (uint) zvals.f[1];
- if (z < ztile.t16[iy][ix+1])
- ztile.t16[iy][ix+1] = z;
- else
- mask &= ~MASK_TOP_RIGHT;
- }
-
- if (mask & MASK_BOTTOM_LEFT) {
- uint z = (uint) zvals.f[2];
- if (z < ztile.t16[iy+1][ix])
- ztile.t16[iy+1][ix] = z;
- else
- mask &= ~MASK_BOTTOM_LEFT;
- }
-
- if (mask & MASK_BOTTOM_RIGHT) {
- uint z = (uint) zvals.f[3];
- if (z < ztile.t16[iy+1][ix+1])
- ztile.t16[iy+1][ix+1] = z;
- else
- mask &= ~MASK_BOTTOM_RIGHT;
- }
+ int ix = (x - setup.cliprect_minx) / 4;
+ int iy = (y - setup.cliprect_miny) / 2;
+ mask = spu_z16_test_less(zvals.v, &ztile.us8[iy][ix], x>>1, quadmask);
}
else {
- zvals.v = spu_mul(zvals.v, zscale32.v);
- ASSERT(spu.fb.depth_format == PIPE_FORMAT_Z32_UNORM);
- if (mask & MASK_TOP_LEFT) {
- uint z = (uint) zvals.f[0];
- if (z < ztile.t32[iy][ix])
- ztile.t32[iy][ix] = z;
- else
- mask &= ~MASK_TOP_LEFT;
- }
-
- if (mask & MASK_TOP_RIGHT) {
- uint z = (uint) zvals.f[1];
- if (z < ztile.t32[iy][ix+1])
- ztile.t32[iy][ix+1] = z;
- else
- mask &= ~MASK_TOP_RIGHT;
- }
-
- if (mask & MASK_BOTTOM_LEFT) {
- uint z = (uint) zvals.f[2];
- if (z < ztile.t32[iy+1][ix])
- ztile.t32[iy+1][ix] = z;
- else
- mask &= ~MASK_BOTTOM_LEFT;
- }
-
- if (mask & MASK_BOTTOM_RIGHT) {
- uint z = (uint) zvals.f[3];
- if (z < ztile.t32[iy+1][ix+1])
- ztile.t32[iy+1][ix+1] = z;
- else
- mask &= ~MASK_BOTTOM_RIGHT;
- }
+ int ix = (x - setup.cliprect_minx) / 2;
+ int iy = (y - setup.cliprect_miny) / 2;
+ mask = spu_z32_test_less(zvals.v, &ztile.ui4[iy][ix], quadmask);
}
-
- if (mask)
- cur_tile_status_z = TILE_STATUS_DIRTY;
-
return mask;
}
-
-
-static vector unsigned int
-do_depth_test_simd(int x, int y, vector unsigned int quadmask)
-{
- int ix = (x - setup.cliprect_minx) / 2;
- int iy = (y - setup.cliprect_miny) / 2;
- float4 zvals;
-
- vector unsigned int zmask;
-
- zvals.v = eval_z((float) x, (float) y);
-
- if (cur_tile_status_z == TILE_STATUS_CLEAR) {
- /* now, _really_ clear the tile */
- clear_z_tile(&ztile);
- }
- else if (cur_tile_status_z != TILE_STATUS_DIRTY) {
- /* make sure we've got the tile from main mem */
- wait_on_mask(1 << TAG_READ_TILE_Z);
- }
- cur_tile_status_z = TILE_STATUS_DIRTY;
-
- /* XXX fetch Z value sooner to hide latency here */
- zmask = spu_cmpgt(ztile.f4[ix][iy].v, zvals.v);
- zmask = spu_and(zmask, quadmask);
-
- ztile.f4[ix][iy].v = spu_sel(ztile.f4[ix][iy].v, zvals.v, zmask);
- //ztile.f4[ix][iy].v = spu_sel(zvals.v, ztile.f4[ix][iy].v, mask4);
-
- return zmask;
-}
-
-
/**
* Emit a quad (pass to next stage). No clipping is done.
*/
@@ -461,36 +336,18 @@ emit_quad( int x, int y, mask_t mask )
}
if (spu.depth_stencil.depth.enabled) {
-#if SIMD_Z
- mask = do_depth_test_simd(x, y, mask);
-#else
mask = do_depth_test(x, y, mask);
-#endif
}
-#if !SIMD_Z
- if (mask)
-#endif
- {
- if (cur_tile_status_c == TILE_STATUS_CLEAR) {
- /* now, _really_ clear the tile */
- clear_c_tile(&ctile);
- }
+ /* If any bits in mask are set... */
+ if (spu_extract(spu_orx(mask), 0)) {
-#if 0
if (cur_tile_status_c == TILE_STATUS_CLEAR) {
/* now, _really_ clear the tile */
clear_c_tile(&ctile);
- cur_tile_status_c = TILE_STATUS_DIRTY;
}
- else if (cur_tile_status_c != TILE_STATUS_DIRTY) {
- /* make sure we've got the tile from main mem */
- wait_on_mask(1 << TAG_READ_TILE_COLOR);
- }
-#endif
cur_tile_status_c = TILE_STATUS_DIRTY;
-#if SIMD_Z
if (spu_extract(mask, 0))
ctile.t32[iy][ix] = colors[QUAD_TOP_LEFT];
if (spu_extract(mask, 1))
@@ -499,20 +356,11 @@ emit_quad( int x, int y, mask_t mask )
ctile.t32[iy+1][ix] = colors[QUAD_BOTTOM_LEFT];
if (spu_extract(mask, 3))
ctile.t32[iy+1][ix+1] = colors[QUAD_BOTTOM_RIGHT];
-#elif 0
+
+#if 0
/* SIMD_Z with swizzled color buffer (someday) */
vector float icolors = *((vector float *) &colors);
ctile.f4[iy/2][ix/2].v = spu_sel(ctile.f4[iy/2][ix/2].v, icolors, mask);
-
-#else
- if (mask & MASK_TOP_LEFT)
- ctile.t32[iy][ix] = colors[QUAD_TOP_LEFT];
- if (mask & MASK_TOP_RIGHT)
- ctile.t32[iy][ix+1] = colors[QUAD_TOP_RIGHT];
- if (mask & MASK_BOTTOM_LEFT)
- ctile.t32[iy+1][ix] = colors[QUAD_BOTTOM_LEFT];
- if (mask & MASK_BOTTOM_RIGHT)
- ctile.t32[iy+1][ix+1] = colors[QUAD_BOTTOM_RIGHT];
#endif
}
@@ -533,38 +381,20 @@ static INLINE int block( int x )
/**
* Compute mask which indicates which pixels in the 2x2 quad are actually inside
* the triangle's bounds.
- *
- * this is pretty nasty... may need to rework flush_spans again to
- * fix it, if possible.
+ * The mask is a uint4 vector and each element will be 0 or 0xffffffff.
*/
-static mask_t calculate_mask( int x )
+static INLINE mask_t calculate_mask( int x )
{
-#if SIMD_Z
- uint m0, m1, m2, m3;
-
- m0 = (x >= setup.span.left[0] && x < setup.span.right[0]) * ~0;
- m1 = (x+1 >= setup.span.left[0] && x+1 < setup.span.right[0]) * ~0;
- m2 = (x >= setup.span.left[1] && x < setup.span.right[1]) * ~0;
- m3 = (x+1 >= setup.span.left[1] && x+1 < setup.span.right[1]) * ~0;
-
- return (vector unsigned int) {m0, m1, m2, m3};
-#else
- unsigned mask = 0x0;
-
- if (x >= setup.span.left[0] && x < setup.span.right[0])
- mask |= MASK_TOP_LEFT;
-
- if (x >= setup.span.left[1] && x < setup.span.right[1])
- mask |= MASK_BOTTOM_LEFT;
-
- if (x+1 >= setup.span.left[0] && x+1 < setup.span.right[0])
- mask |= MASK_TOP_RIGHT;
-
- if (x+1 >= setup.span.left[1] && x+1 < setup.span.right[1])
- mask |= MASK_BOTTOM_RIGHT;
-
+ /* This is a little tricky.
+ * Use & instead of && to avoid branches.
+ * Use negation to convert true/false to ~0/0 values.
+ */
+ mask_t mask;
+ mask = spu_insert(-((x >= setup.span.left[0]) & (x < setup.span.right[0])), mask, 0);
+ mask = spu_insert(-((x+1 >= setup.span.left[0]) & (x+1 < setup.span.right[0])), mask, 1);
+ mask = spu_insert(-((x >= setup.span.left[1]) & (x < setup.span.right[1])), mask, 2);
+ mask = spu_insert(-((x+1 >= setup.span.left[1]) & (x+1 < setup.span.right[1])), mask, 3);
return mask;
-#endif
}
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