diff options
| author | Brian Paul <brianp@vmware.com> | 2009-06-30 15:36:42 -0600 |
|---|---|---|
| committer | Brian Paul <brianp@vmware.com> | 2009-06-30 17:12:44 -0600 |
| commit | 6eb2ca500db940263bfcb9b3ca83f2b5c5431513 (patch) | |
| tree | fa685b1997ad6924a2b51c27eb0cd0c7b872926a /src/mesa/drivers/dri/i965/brw_vs_emit.c | |
| parent | 57a06d3a48c9af1067ec05e3ad96c58f4b9b99be (diff) | |
i965: comments and a new assertion
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_vs_emit.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vs_emit.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c index edb604b653..01364232a4 100644 --- a/src/mesa/drivers/dri/i965/brw_vs_emit.c +++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c @@ -129,8 +129,7 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) } } - /* Allocate outputs: TODO: could organize the non-position outputs - * to go straight into message regs. + /* Allocate outputs. The non-position outputs go straight into message regs. */ c->nr_outputs = 0; c->first_output = reg; @@ -138,6 +137,7 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c ) for (i = 0; i < VERT_RESULT_MAX; i++) { if (c->prog_data.outputs_written & (1 << i)) { c->nr_outputs++; + assert(i < Elements(c->regs[PROGRAM_OUTPUT])); if (i == VERT_RESULT_HPOS) { c->regs[PROGRAM_OUTPUT][i] = brw_vec8_grf(reg, 0); reg++; @@ -1076,7 +1076,9 @@ static void emit_vertex_write( struct brw_vs_compile *c) /* Build ndc coords */ ndc = get_tmp(c); + /* ndc = 1.0 / pos.w */ emit_math1(c, BRW_MATH_FUNCTION_INV, ndc, brw_swizzle1(pos, 3), BRW_MATH_PRECISION_FULL); + /* ndc.xyz = pos * ndc */ brw_MUL(p, brw_writemask(ndc, WRITEMASK_XYZ), pos, ndc); /* Update the header for point size, user clipping flags, and -ve rhw |