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v3d: Add support for requesting the sample offsets.

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This commit is contained in:
Eric Anholt
2018-12-27 23:20:53 -08:00
parent 906fca1b4b
commit f695d62fe5
1 changed files with 22 additions and 0 deletions
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22
src/gallium/drivers/v3d/v3d_context.c
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@@ -123,6 +123,27 @@ v3d_context_destroy(struct pipe_context *pctx)
ralloc_free(v3d);
}
static void
v3d_get_sample_position(struct pipe_context *pctx,
unsigned sample_count, unsigned sample_index,
float *xy)
{
struct v3d_context *v3d = v3d_context(pctx);
if (sample_count <= 1) {
xy[0] = 0.5;
xy[1] = 0.5;
} else {
static const int xoffsets_v33[] = { 1, -3, 3, -1 };
static const int xoffsets_v42[] = { -1, 3, -3, 1 };
const int *xoffsets = (v3d->screen->devinfo.ver >= 42 ?
xoffsets_v42 : xoffsets_v33);
xy[0] = 0.5 + xoffsets[sample_index] * .125;
xy[1] = .125 + sample_index * .25;
}
}
struct pipe_context *
v3d_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
{
@@ -153,6 +174,7 @@ v3d_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
pctx->flush = v3d_pipe_flush;
pctx->set_debug_callback = v3d_set_debug_callback;
pctx->invalidate_resource = v3d_invalidate_resource;
pctx->get_sample_position = v3d_get_sample_position;
if (screen->devinfo.ver >= 41) {
v3d41_draw_init(pctx);