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broadcom/vc4: Switch the Viewport Center fields to a fixed-point representation. 

This gets us automatic CL decoding to a floating-point value, and drops a
magic number from the emit code.  250x250 shader runner tests now say they
have a center of 125.0 instead of 2000.
This commit is contained in:
Eric Anholt 2017-07-12 15:56:00 -07:00
parent 299c9a2db1
commit b3c78a51f3
2 changed files with 4 additions and 4 deletions
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4
src/broadcom/cle/v3d_packet_v21.xml
View File

@ -212,8 +212,8 @@
</packet>
<packet name="Viewport Offset" code="103">
<field name="Viewport Centre Y-coordinate" size="16" start="16" type="int"/>
<field name="Viewport Centre X-coordinate" size="16" start="0" type="int"/>
<field name="Viewport Centre Y-coordinate" size="16" start="16" type="s12.4"/>
<field name="Viewport Centre X-coordinate" size="16" start="0" type="s12.4"/>
</packet>
<packet name="Z min and max clipping planes" code="104">

4
src/gallium/drivers/vc4/vc4_emit.c
View File

@ -135,9 +135,9 @@ vc4_emit_state(struct pipe_context *pctx)
cl_emit(&job->bcl, VIEWPORT_OFFSET, vp) {
vp.viewport_centre_x_coordinate =
16 * vc4->viewport.translate[0];
vc4->viewport.translate[0];
vp.viewport_centre_y_coordinate =
16 * vc4->viewport.translate[1];
vc4->viewport.translate[1];
}
}