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sna/gen9: Emit a dummy primitive between VertexElements 

References: https://bugs.freedesktop.org/show_bug.cgi?id=98999
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-12-05 15:13:24 +00:00
parent 9ac7a3370a
commit 4acd4a7d3d
2 changed files with 17 additions and 0 deletions
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16
src/sna/gen9_render.c
View File

@ -1101,6 +1101,17 @@ gen9_emit_vertex_elements(struct sna *sna,
return;
render->ve_id = id;
if (render->ve_dirty) {
/* dummy primitive to flush vertex before change? */
OUT_BATCH(GEN9_3DPRIMITIVE | (7 - 2));
OUT_BATCH(0); /* ignored, see VF_TOPOLOGY */
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(1); /* single instance */
OUT_BATCH(0); /* start instance location */
OUT_BATCH(0); /* index buffer offset, ignored */
}
/* The VUE layout
* dword 0-3: pad (0.0, 0.0, 0.0. 0.0)
* dword 4-7: position (x, y, 1.0, 1.0),
@ -1198,6 +1209,8 @@ gen9_emit_vertex_elements(struct sna *sna,
offset << VE_OFFSET_SHIFT);
OUT_BATCH(dw);
}
render->ve_dirty = true;
}
inline static void
@ -1322,6 +1335,7 @@ static bool gen9_magic_ca_pass(struct sna *sna,
OUT_BATCH(0); /* index buffer offset, ignored */
state->last_primitive = sna->kgem.nbatch;
state->ve_dirty = false;
return true;
}
@ -1508,6 +1522,7 @@ static void gen9_emit_primitive(struct sna *sna)
sna->render.vertex_start = sna->render.vertex_index;
sna->render_state.gen9.last_primitive = sna->kgem.nbatch;
sna->render_state.gen9.ve_dirty = false;
}
static bool gen9_rectangle_begin(struct sna *sna,
@ -3967,6 +3982,7 @@ static void gen9_render_reset(struct sna *sna)
sna->render_state.gen9.emit_flush = false;
sna->render_state.gen9.needs_invariant = true;
sna->render_state.gen9.ve_id = 3 << 2;
sna->render_state.gen9.ve_dirty = false;
sna->render_state.gen9.last_primitive = -1;
sna->render_state.gen9.num_sf_outputs = 0;

1
src/sna/sna_render.h
View File

@ -623,6 +623,7 @@ struct gen9_render_state {
bool needs_invariant;
bool emit_flush;
bool ve_dirty;
};
struct sna_static_stream {