From: Mathias Fröhlich <[email protected]>
Replaces an iterate and test bit in a bitmask loop by a
loop only iterating over the bits set in the bitmask.
v2: Use _mesa_bit_scan{,64} instead of open coding.
Reviewed-by: Brian Paul <[email protected]>
Signed-off-by: Mathias Fröhlich <[email protected]>
---
src/mesa/drivers/dri/i965/brw_draw.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_draw.c
b/src/mesa/drivers/dri/i965/brw_draw.c
index fa3ff5f..32beb1c 100644
--- a/src/mesa/drivers/dri/i965/brw_draw.c
+++ b/src/mesa/drivers/dri/i965/brw_draw.c
@@ -301,16 +301,15 @@ brw_merge_inputs(struct brw_context *brw,
}
if (brw->gen < 8 && !brw->is_haswell) {
- struct gl_program *vp = &ctx->VertexProgram._Current->Base;
+ GLbitfield64 mask = ctx->VertexProgram._Current->Base.InputsRead;
/* Prior to Haswell, the hardware can't natively support GL_FIXED or
* 2_10_10_10_REV vertex formats. Set appropriate workaround flags.
*/
- for (i = 0; i < VERT_ATTRIB_MAX; i++) {
- if (!(vp->InputsRead & BITFIELD64_BIT(i)))
- continue;
-
+ while (mask) {
uint8_t wa_flags = 0;
+ i = _mesa_bit_scan64(&mask);
+
switch (brw->vb.inputs[i].glarray->Type) {
case GL_FIXED:
--
2.5.5
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