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i965: comments and a new assertion

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This commit is contained in:
Brian Paul 2009-06-30 15:36:42 -06:00
parent 57a06d3a48
commit 6eb2ca500d
1 changed files with 4 additions and 2 deletions
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6
src/mesa/drivers/dri/i965/brw_vs_emit.c
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@ -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