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broadcom/vc5: Implement workaround for GFXH-1431.

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This should fix some blending errors, but doesn't impact any testcases in
the CTS.
This commit is contained in:
Eric Anholt 2018-03-26 10:38:28 -07:00
parent 1bf466270d
commit 494da6c2dd
1 changed files with 5 additions and 1 deletions
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6
src/gallium/drivers/vc5/vc5_emit.c
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@ -490,7 +490,11 @@ v3dX(emit_state)(struct pipe_context *pctx)
}
}
if (vc5->dirty & VC5_DIRTY_BLEND_COLOR) {
/* GFXH-1431: On V3D 3.x, writing BLEND_CONFIG resets the constant
* color.
*/
if (vc5->dirty & VC5_DIRTY_BLEND_COLOR ||
(V3D_VERSION < 41 && (vc5->dirty & VC5_DIRTY_BLEND))) {
cl_emit(&job->bcl, BLEND_CONSTANT_COLOUR, colour) {
colour.red_f16 = (vc5->swap_color_rb ?
vc5->blend_color.hf[2] :