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i965: Introduce an is_drawing_lines() helper.

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Similar to is_drawing_points().

v2: Account for isoline tessellation output topology.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Kenneth Graunke 2016-03-10 15:51:56 -08:00
parent 757674e8d0
commit 47be5a64c7
1 changed files with 30 additions and 0 deletions
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30
src/mesa/drivers/dri/i965/brw_state.h
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@ -430,6 +430,36 @@ is_drawing_points(const struct brw_context *brw)
}
}
static inline bool
is_drawing_lines(const struct brw_context *brw)
{
/* Determine if the primitives *reaching the SF* are points */
/* _NEW_POLYGON */
if (brw->ctx.Polygon.FrontMode == GL_LINE ||
brw->ctx.Polygon.BackMode == GL_LINE) {
return true;
}
if (brw->geometry_program) {
/* BRW_NEW_GEOMETRY_PROGRAM */
return brw->geometry_program->OutputType == GL_LINE_STRIP;
} else if (brw->tes.prog_data) {
/* BRW_NEW_TES_PROG_DATA */
return brw->tes.prog_data->output_topology ==
BRW_TESS_OUTPUT_TOPOLOGY_LINE;
} else {
/* BRW_NEW_PRIMITIVE */
switch (brw->primitive) {
case _3DPRIM_LINELIST:
case _3DPRIM_LINESTRIP:
case _3DPRIM_LINELOOP:
return true;
}
}
return false;
}
#ifdef __cplusplus
}
#endif