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radeonsi: extract the VGT_GS_MODE calculation into its own function

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Cc: "11.0 11.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit 9f89bd69df)
This commit is contained in:
Nicolai Hähnle 2016-01-22 16:58:15 -05:00 • committed by Emil Velikov
parent e101a005b1
commit 4ba352dc80
1 changed files with 28 additions and 19 deletions
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47
src/gallium/drivers/radeonsi/si_state_shaders.c
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@ -212,13 +212,37 @@ static void si_shader_es(struct si_shader *shader)
si_set_tesseval_regs(shader, pm4);
}
/**
* Calculate the appropriate setting of VGT_GS_MODE when \p shader is a
* geometry shader.
*/
static uint32_t si_vgt_gs_mode(struct si_shader *shader)
{
unsigned gs_max_vert_out = shader->selector->gs_max_out_vertices;
unsigned cut_mode;
if (gs_max_vert_out <= 128) {
cut_mode = V_028A40_GS_CUT_128;
} else if (gs_max_vert_out <= 256) {
cut_mode = V_028A40_GS_CUT_256;
} else if (gs_max_vert_out <= 512) {
cut_mode = V_028A40_GS_CUT_512;
} else {
assert(gs_max_vert_out <= 1024);
cut_mode = V_028A40_GS_CUT_1024;
}
return S_028A40_MODE(V_028A40_GS_SCENARIO_G) |
S_028A40_CUT_MODE(cut_mode)|
S_028A40_ES_WRITE_OPTIMIZE(1) |
S_028A40_GS_WRITE_OPTIMIZE(1);
}
static void si_shader_gs(struct si_shader *shader)
{
unsigned gs_vert_itemsize = shader->selector->gsvs_vertex_size;
unsigned gs_max_vert_out = shader->selector->gs_max_out_vertices;
unsigned gsvs_itemsize = shader->selector->max_gsvs_emit_size >> 2;
unsigned gs_num_invocations = shader->selector->gs_num_invocations;
unsigned cut_mode;
struct si_pm4_state *pm4;
unsigned num_sgprs, num_user_sgprs;
uint64_t va;
@ -232,22 +256,7 @@ static void si_shader_gs(struct si_shader *shader)
if (pm4 == NULL)
return;
if (gs_max_vert_out <= 128) {
cut_mode = V_028A40_GS_CUT_128;
} else if (gs_max_vert_out <= 256) {
cut_mode = V_028A40_GS_CUT_256;
} else if (gs_max_vert_out <= 512) {
cut_mode = V_028A40_GS_CUT_512;
} else {
assert(gs_max_vert_out <= 1024);
cut_mode = V_028A40_GS_CUT_1024;
}
si_pm4_set_reg(pm4, R_028A40_VGT_GS_MODE,
S_028A40_MODE(V_028A40_GS_SCENARIO_G) |
S_028A40_CUT_MODE(cut_mode)|
S_028A40_ES_WRITE_OPTIMIZE(1) |
S_028A40_GS_WRITE_OPTIMIZE(1));
si_pm4_set_reg(pm4, R_028A40_VGT_GS_MODE, si_vgt_gs_mode(shader));
si_pm4_set_reg(pm4, R_028A60_VGT_GSVS_RING_OFFSET_1, gsvs_itemsize);
si_pm4_set_reg(pm4, R_028A64_VGT_GSVS_RING_OFFSET_2, gsvs_itemsize * ((max_stream >= 2) ? 2 : 1));
@ -255,7 +264,7 @@ static void si_shader_gs(struct si_shader *shader)
si_pm4_set_reg(pm4, R_028AB0_VGT_GSVS_RING_ITEMSIZE, gsvs_itemsize * (max_stream + 1));
si_pm4_set_reg(pm4, R_028B38_VGT_GS_MAX_VERT_OUT, gs_max_vert_out);
si_pm4_set_reg(pm4, R_028B38_VGT_GS_MAX_VERT_OUT, shader->selector->gs_max_out_vertices);
si_pm4_set_reg(pm4, R_028B5C_VGT_GS_VERT_ITEMSIZE, gs_vert_itemsize >> 2);
si_pm4_set_reg(pm4, R_028B60_VGT_GS_VERT_ITEMSIZE_1, (max_stream >= 1) ? gs_vert_itemsize >> 2 : 0);