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v3d: flush jobs writing to vertex buffers used in the current draw call 

This can happen when any of our vertex buffers was written by a previous
transform feedback draw.

Fixes the following piglit tests:
spec/ext_transform_feedback/position-render-bufferbase
spec/ext_transform_feedback/position-render-bufferbase-discard
spec/ext_transform_feedback/position-render-bufferoffset
spec/ext_transform_feedback/position-render-bufferoffset-discard
spec/ext_transform_feedback/position-render-bufferrange
spec/ext_transform_feedback/position-render-bufferrange-discard

Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Iago Toral Quiroga 2019-06-19 10:28:12 +02:00
parent eb44dcc219
commit 4d8f82946b
1 changed files with 9 additions and 0 deletions
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9
src/gallium/drivers/v3d/v3dx_draw.c
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@ -177,6 +177,15 @@ v3d_predraw_check_stage_inputs(struct pipe_context *pctx,
v3d_flush_jobs_writing_resource(v3d, view->base.resource);
}
/* Flush writes to our vertex buffers (i.e. from transform feedback) */
if (s == PIPE_SHADER_VERTEX) {
foreach_bit(i, v3d->vertexbuf.enabled_mask) {
struct pipe_vertex_buffer *vb = &v3d->vertexbuf.vb[i];
v3d_flush_jobs_writing_resource(v3d, vb->buffer.resource);
}
}
}
static void