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braodcom/vc5: Fix incorrect early Z writes in discard shaders.

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Fixes glsl-fs-discard-02.
This commit is contained in:
Eric Anholt
2017-09-28 10:39:07 -07:00
parent 732a3a72cb
commit e20c82c550
1 changed files with 6 additions and 1 deletions
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7
src/gallium/drivers/vc5/vc5_draw.c
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@@ -187,8 +187,13 @@ vc5_emit_gl_shader_state(struct vc5_context *vc5,
(info->mode == PIPE_PRIM_POINTS &&
vc5->rasterizer->base.point_size_per_vertex);
/* Must be set if the shader modifies Z, discards, or modifies
* the sample mask. For any of these cases, the fragment
* shader needs to write the Z value (even just discards).
*/
shader.fragment_shader_does_z_writes =
vc5->prog.fs->prog_data.fs->writes_z;
(vc5->prog.fs->prog_data.fs->writes_z ||
vc5->prog.fs->prog_data.fs->discard);
shader.number_of_varyings_in_fragment_shader =
vc5->prog.fs->prog_data.base->num_inputs;