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-rw-r--r--src/gallium/drivers/cell/spu/spu_tri.c100
1 files changed, 16 insertions, 84 deletions
diff --git a/src/gallium/drivers/cell/spu/spu_tri.c b/src/gallium/drivers/cell/spu/spu_tri.c
index 438fae84a8f..03f094373df 100644
--- a/src/gallium/drivers/cell/spu/spu_tri.c
+++ b/src/gallium/drivers/cell/spu/spu_tri.c
@@ -116,7 +116,7 @@ struct setup_stage {
struct edge etop;
struct edge emaj;
- float oneoverarea;
+ float oneOverArea;
uint facing;
@@ -507,13 +507,13 @@ setup_sort_vertices(const struct vertex_header *v0,
* use the prim->det value because its sign is correct.
*/
{
- const float area = (setup.emaj.dx * setup.ebot.dy -
- setup.ebot.dx * setup.emaj.dy);
+ const float area = (setup.emaj.dx * setup.ebot.dy -
+ setup.ebot.dx * setup.emaj.dy);
- setup.oneoverarea = 1.0f / area;
+ setup.oneOverArea = 1.0f / area;
/*
_mesa_printf("%s one-over-area %f area %f det %f\n",
- __FUNCTION__, setup.oneoverarea, area, prim->det );
+ __FUNCTION__, setup.oneOverArea, area, prim->det );
*/
}
@@ -536,7 +536,7 @@ setup_sort_vertices(const struct vertex_header *v0,
* \param slot which attribute slot
*/
static INLINE void
-const_coeff(uint slot)
+const_coeff4(uint slot)
{
setup.coef[slot].dadx.v = (vector float) {0.0, 0.0, 0.0, 0.0};
setup.coef[slot].dady.v = (vector float) {0.0, 0.0, 0.0, 0.0};
@@ -545,58 +545,6 @@ const_coeff(uint slot)
/**
- * Compute a0, dadx and dady for a linearly interpolated coefficient,
- * for a triangle.
- */
-static INLINE void
-tri_linear_coeff(uint slot, uint firstComp, uint lastComp)
-{
- uint i;
- const float *vmin_d = (float *) &setup.vmin->data[slot];
- const float *vmid_d = (float *) &setup.vmid->data[slot];
- const float *vmax_d = (float *) &setup.vmax->data[slot];
- const float x = spu_extract(setup.vmin->data[0], 0) - 0.5f;
- const float y = spu_extract(setup.vmin->data[0], 1) - 0.5f;
-
- for (i = firstComp; i < lastComp; i++) {
- float botda = vmid_d[i] - vmin_d[i];
- float majda = vmax_d[i] - vmin_d[i];
- float a = setup.ebot.dy * majda - botda * setup.emaj.dy;
- float b = setup.emaj.dx * botda - majda * setup.ebot.dx;
-
- ASSERT(slot < PIPE_MAX_SHADER_INPUTS);
-
- setup.coef[slot].dadx.f[i] = a * setup.oneoverarea;
- setup.coef[slot].dady.f[i] = b * setup.oneoverarea;
-
- /* calculate a0 as the value which would be sampled for the
- * fragment at (0,0), taking into account that we want to sample at
- * pixel centers, in other words (0.5, 0.5).
- *
- * this is neat but unfortunately not a good way to do things for
- * triangles with very large values of dadx or dady as it will
- * result in the subtraction and re-addition from a0 of a very
- * large number, which means we'll end up loosing a lot of the
- * fractional bits and precision from a0. the way to fix this is
- * to define a0 as the sample at a pixel center somewhere near vmin
- * instead - i'll switch to this later.
- */
- setup.coef[slot].a0.f[i] = (vmin_d[i] -
- (setup.coef[slot].dadx.f[i] * x +
- setup.coef[slot].dady.f[i] * y));
- }
-
- /*
- _mesa_printf("attr[%d].%c: %f dx:%f dy:%f\n",
- slot, "xyzw"[i],
- setup.coef[slot].a0[i],
- setup.coef[slot].dadx.f[i],
- setup.coef[slot].dady.f[i]);
- */
-}
-
-
-/**
* As above, but interp setup all four vector components.
*/
static INLINE void
@@ -616,8 +564,8 @@ tri_linear_coeff4(uint slot)
vector float b = spu_sub(spu_mul(spu_splats(setup.emaj.dx), botda),
spu_mul(majda, spu_splats(setup.ebot.dx)));
- setup.coef[slot].dadx.v = spu_mul(a, spu_splats(setup.oneoverarea));
- setup.coef[slot].dady.v = spu_mul(b, spu_splats(setup.oneoverarea));
+ setup.coef[slot].dadx.v = spu_mul(a, spu_splats(setup.oneOverArea));
+ setup.coef[slot].dady.v = spu_mul(b, spu_splats(setup.oneOverArea));
vector float tempx = spu_mul(setup.coef[slot].dadx.v, xxxx);
vector float tempy = spu_mul(setup.coef[slot].dady.v, yyyy);
@@ -660,8 +608,8 @@ tri_persp_coeff4(uint slot)
vector float b = spu_sub(spu_mul(spu_splats(setup.emaj.dx), botda),
spu_mul(majda, spu_splats(setup.ebot.dx)));
- setup.coef[slot].dadx.v = spu_mul(a, spu_splats(setup.oneoverarea));
- setup.coef[slot].dady.v = spu_mul(b, spu_splats(setup.oneoverarea));
+ setup.coef[slot].dadx.v = spu_mul(a, spu_splats(setup.oneOverArea));
+ setup.coef[slot].dady.v = spu_mul(b, spu_splats(setup.oneOverArea));
vector float tempx = spu_mul(setup.coef[slot].dadx.v, xxxx);
vector float tempy = spu_mul(setup.coef[slot].dady.v, yyyy);
@@ -678,21 +626,17 @@ tri_persp_coeff4(uint slot)
static void
setup_tri_coefficients(void)
{
-#if 1
uint i;
for (i = 0; i < spu.vertex_info.num_attribs; i++) {
switch (spu.vertex_info.attrib[i].interp_mode) {
case INTERP_NONE:
break;
- case INTERP_POS:
- /*tri_linear_coeff(i, 2, 3);*/
- /* XXX interp W if PERSPECTIVE... */
- tri_linear_coeff4(i);
- break;
case INTERP_CONSTANT:
- const_coeff(i);
+ const_coeff4(i);
break;
+ case INTERP_POS:
+ /* fall-through */
case INTERP_LINEAR:
tri_linear_coeff4(i);
break;
@@ -703,13 +647,6 @@ setup_tri_coefficients(void)
ASSERT(0);
}
}
-#else
- ASSERT(spu.vertex_info.interp_mode[0] == INTERP_POS);
- ASSERT(spu.vertex_info.interp_mode[1] == INTERP_LINEAR ||
- spu.vertex_info.interp_mode[1] == INTERP_CONSTANT);
- tri_linear_coeff(0, 2, 3); /* slot 0, z */
- tri_linear_coeff(1, 0, 4); /* slot 1, color */
-#endif
}
@@ -863,19 +800,14 @@ tri_draw(const float *v0, const float *v1, const float *v2,
setup.span.y_flags = 0;
setup.span.right[0] = 0;
setup.span.right[1] = 0;
- /* setup.span.z_mode = tri_z_mode( setup.ctx ); */
- /* init_constant_attribs( setup ); */
-
- if (setup.oneoverarea < 0.0) {
- /* emaj on left:
- */
+ if (setup.oneOverArea < 0.0) {
+ /* emaj on left */
subtriangle( &setup.emaj, &setup.ebot, setup.ebot.lines );
subtriangle( &setup.emaj, &setup.etop, setup.etop.lines );
}
else {
- /* emaj on right:
- */
+ /* emaj on right */
subtriangle( &setup.ebot, &setup.emaj, setup.ebot.lines );
subtriangle( &setup.etop, &setup.emaj, setup.etop.lines );
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 20:30:03 +0000