diff options
author | Brian Paul <brian.paul@tungstengraphics.com> | 2008-10-13 20:19:51 -0600 |
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committer | Brian Paul <brian.paul@tungstengraphics.com> | 2008-10-13 20:19:51 -0600 |
commit | fc562a7acd86bee4853d38961e29c8da3d56e548 (patch) | |
tree | 390ce86eb51295c6cb6e575c28041db7ee257513 /src/gallium/drivers/cell/spu/spu_tri.c | |
parent | 5d7cc6176de09e683e5b40a69df250d1abfaf6f0 (diff) |
cell: more clean-up in spu_tri.c
Diffstat (limited to 'src/gallium/drivers/cell/spu/spu_tri.c')
-rw-r--r-- | src/gallium/drivers/cell/spu/spu_tri.c | 100 |
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 438fae84a8..03f094373d 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 ); } |