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panfrost: Flesh out allow_forward_pixel_to_kill check

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A few cases missed, probably some more bugs hidden here!

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9105>
This commit is contained in:
Alyssa Rosenzweig 2021-02-16 18:10:08 -05:00 • committed by Marge Bot
parent 2e83481a1a
commit 9d2b2e3c67
1 changed files with 6 additions and 1 deletions
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7
src/gallium/drivers/panfrost/pan_cmdstream.c
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@ -427,6 +427,7 @@ panfrost_prepare_bifrost_fs_state(struct panfrost_context *ctx,
const struct panfrost_device *dev = pan_device(ctx->base.screen);
struct panfrost_shader_state *fs = panfrost_get_shader_state(ctx, PIPE_SHADER_FRAGMENT);
unsigned rt_count = ctx->pipe_framebuffer.nr_cbufs;
bool alpha_to_coverage = ctx->blend->base.alpha_to_coverage;
if (!panfrost_fs_required(fs, blend, rt_count)) {
state->properties.uniform_buffer_count = 32;
@ -445,8 +446,12 @@ panfrost_prepare_bifrost_fs_state(struct panfrost_context *ctx,
no_blend &= (!blend[i].load_dest | blend[i].no_colour);
state->properties.bifrost.allow_forward_pixel_to_kill =
!fs->info.fs.can_discard &&
!fs->info.fs.writes_depth &&
!fs->info.fs.writes_stencil &&
!fs->info.fs.writes_coverage &&
!fs->info.fs.can_discard &&
!fs->info.fs.outputs_read &&
!alpha_to_coverage &&
no_blend;
}
}