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radv: emit the rasterization samples through an user SGPR if needed

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When the main FS needs sample positions and the number of samples
isn't known at compile time with GPL.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18677>
This commit is contained in:
Samuel Pitoiset
2022-09-15 16:01:36 +02:00
committed by Marge Bot
parent deb2dccc75
commit f4ec8e1ad5
1 changed files with 7 additions and 0 deletions
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7
src/amd/vulkan/radv_pipeline.c
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@@ -5543,6 +5543,13 @@ radv_pipeline_emit_fragment_shader(struct radeon_cmdbuf *ctx_cs, struct radeon_c
ctx_cs, R_028710_SPI_SHADER_Z_FORMAT, ctx_cs, R_028710_SPI_SHADER_Z_FORMAT,
ac_get_spi_shader_z_format(ps->info.ps.writes_z, ps->info.ps.writes_stencil, ac_get_spi_shader_z_format(ps->info.ps.writes_z, ps->info.ps.writes_stencil,
ps->info.ps.writes_sample_mask, false)); ps->info.ps.writes_sample_mask, false));
struct radv_userdata_info *loc =
radv_lookup_user_sgpr(&pipeline->base, MESA_SHADER_FRAGMENT, AC_UD_PS_NUM_SAMPLES);
if (loc->sgpr_idx != -1) {
uint32_t base_reg = pipeline->base.user_data_0[MESA_SHADER_FRAGMENT];
radeon_set_sh_reg(cs, base_reg + loc->sgpr_idx * 4, pipeline->ms.num_samples);
}
} }
static void static void