radeonsi: Use param export count from si_llvm_export_vs in si_shader_vs
This eliminates the error prone logic in si_shader_vs recalculating this value. It also fixes TGSI_SEMANTIC_CLIPDIST outputs incorrectly not being counted for VS exports. They need to be counted because they are passed to the pixel shader as parameters as well. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91193 Reviewed-by: Marek Olšák <marek.olsak@amd.com>
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@ -1218,6 +1218,8 @@ handle_semantic:
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}
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}
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shader->nr_param_exports = param_count;
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/* We need to add the position output manually if it's missing. */
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if (!pos_args[0][0]) {
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pos_args[0][0] = lp_build_const_int32(base->gallivm, 0xf); /* writemask */
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@ -165,6 +165,7 @@ struct si_shader {
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bool uses_instanceid;
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unsigned nr_pos_exports;
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unsigned nr_param_exports;
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bool is_gs_copy_shader;
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bool dx10_clamp_mode; /* convert NaNs to 0 */
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};
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@ -148,10 +148,9 @@ static void si_shader_gs(struct si_shader *shader)
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static void si_shader_vs(struct si_shader *shader)
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{
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struct tgsi_shader_info *info = &shader->selector->info;
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struct si_pm4_state *pm4;
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unsigned num_sgprs, num_user_sgprs;
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unsigned nparams, i, vgpr_comp_cnt;
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unsigned nparams, vgpr_comp_cnt;
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uint64_t va;
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unsigned window_space =
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shader->selector->info.properties[TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION];
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@ -180,26 +179,8 @@ static void si_shader_vs(struct si_shader *shader)
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}
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assert(num_sgprs <= 104);
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/* Certain attributes (position, psize, etc.) don't count as params.
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* VS is required to export at least one param and r600_shader_from_tgsi()
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* takes care of adding a dummy export.
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*/
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for (nparams = 0, i = 0 ; i < info->num_outputs; i++) {
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switch (info->output_semantic_name[i]) {
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case TGSI_SEMANTIC_CLIPVERTEX:
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case TGSI_SEMANTIC_CLIPDIST:
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case TGSI_SEMANTIC_CULLDIST:
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case TGSI_SEMANTIC_POSITION:
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case TGSI_SEMANTIC_PSIZE:
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case TGSI_SEMANTIC_EDGEFLAG:
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break;
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default:
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nparams++;
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}
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}
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if (nparams < 1)
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nparams = 1;
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/* VS is required to export at least one param. */
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nparams = MAX2(shader->nr_param_exports, 1);
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si_pm4_set_reg(pm4, R_0286C4_SPI_VS_OUT_CONFIG,
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S_0286C4_VS_EXPORT_COUNT(nparams - 1));
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