From: Marek Olšák <marek.ol...@amd.com>
---
src/gallium/drivers/radeonsi/radeonsi_shader.c | 52 +++++++++++++++++++++++---
src/gallium/drivers/radeonsi/radeonsi_shader.h | 1 +
src/gallium/drivers/radeonsi/si_state_draw.c | 1 +
3 files changed, 48 insertions(+), 6 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c
b/src/gallium/drivers/radeonsi/radeonsi_shader.c
index 61e619a..ebe9125 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
@@ -889,7 +889,7 @@ static void si_llvm_emit_epilogue(struct
lp_build_tgsi_context * bld_base)
LLVMValueRef pos_args[4][9] = { { 0 } };
unsigned semantic_name;
unsigned param_count = 0;
- int depth_index = -1, stencil_index = -1;
+ int depth_index = -1, stencil_index = -1, psize_index = -1,
edgeflag_index = -1;
int i;
if (si_shader_ctx->shader->selector->so.num_outputs) {
@@ -940,10 +940,15 @@ handle_semantic:
/* Select the correct target */
switch(semantic_name) {
case TGSI_SEMANTIC_PSIZE:
- shader->vs_out_misc_write = 1;
- shader->vs_out_point_size = 1;
- target = V_008DFC_SQ_EXP_POS + 1;
- break;
+ shader->vs_out_misc_write = true;
+ shader->vs_out_point_size = true;
+ psize_index = index;
+ continue;
+ case TGSI_SEMANTIC_EDGEFLAG:
+ shader->vs_out_misc_write = true;
+ shader->vs_out_edgeflag = true;
+ edgeflag_index = index;
+ continue;
case TGSI_SEMANTIC_POSITION:
if (si_shader_ctx->type ==
TGSI_PROCESSOR_VERTEX) {
target = V_008DFC_SQ_EXP_POS;
@@ -1018,7 +1023,6 @@ handle_semantic:
LLVMVoidTypeInContext(base->gallivm->context),
args, 9);
}
-
}
if (semantic_name == TGSI_SEMANTIC_CLIPDIST) {
@@ -1092,6 +1096,42 @@ handle_semantic:
pos_args[0][8] = base->one; /* W */
}
+ /* Write the misc vector (point size, edgeflag, layer,
viewport). */
+ if (shader->vs_out_misc_write) {
+ pos_args[1][0] = lp_build_const_int32(base->gallivm, /*
writemask */
+
shader->vs_out_point_size |
+
(shader->vs_out_edgeflag << 1));
+ pos_args[1][1] = uint->zero; /* EXEC mask */
+ pos_args[1][2] = uint->zero; /* last export? */
+ pos_args[1][3] = lp_build_const_int32(base->gallivm,
V_008DFC_SQ_EXP_POS + 1);
+ pos_args[1][4] = uint->zero; /* COMPR flag */
+ pos_args[1][5] = base->zero; /* X */
+ pos_args[1][6] = base->zero; /* Y */
+ pos_args[1][7] = base->zero; /* Z */
+ pos_args[1][8] = base->zero; /* W */
+
+ if (shader->vs_out_point_size) {
+ pos_args[1][5] =
LLVMBuildLoad(base->gallivm->builder,
+
si_shader_ctx->radeon_bld.soa.outputs[psize_index][0], "");
+ }
+
+ if (shader->vs_out_edgeflag) {
+ LLVMValueRef output =
LLVMBuildLoad(base->gallivm->builder,
+
si_shader_ctx->radeon_bld.soa.outputs[edgeflag_index][0], "");
+
+ /* The output is a float, but the hw expects an
integer
+ * with the first bit containing the edge flag.
*/
+ output =
LLVMBuildFPToUI(base->gallivm->builder, output,
+
bld_base->uint_bld.elem_type, "");
+
+ output = lp_build_min(&bld_base->int_bld,
output, bld_base->int_bld.one);
+
+ /* The LLVM intrinsic expects a float. */
+ pos_args[1][6] =
LLVMBuildBitCast(base->gallivm->builder, output,
+
base->elem_type, "");
+ }
+ }
+
for (i = 0; i < 4; i++)
if (pos_args[i][0])
shader->nr_pos_exports++;
diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.h
b/src/gallium/drivers/radeonsi/radeonsi_shader.h
index c9e851a..5432a87 100644
--- a/src/gallium/drivers/radeonsi/radeonsi_shader.h
+++ b/src/gallium/drivers/radeonsi/radeonsi_shader.h
@@ -113,6 +113,7 @@ struct si_shader {
bool fs_write_all;
bool vs_out_misc_write;
bool vs_out_point_size;
+ bool vs_out_edgeflag;
unsigned nr_cbufs;
unsigned nr_pos_exports;
unsigned clip_dist_write;
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c
b/src/gallium/drivers/radeonsi/si_state_draw.c
index 1467bb6..d2c8e4c 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -369,6 +369,7 @@ static bool si_update_draw_info_state(struct r600_context
*rctx,
}
si_pm4_set_reg(pm4, R_02881C_PA_CL_VS_OUT_CNTL,
S_02881C_USE_VTX_POINT_SIZE(vs->vs_out_point_size) |
+ S_02881C_USE_VTX_EDGE_FLAG(vs->vs_out_edgeflag) |
S_02881C_VS_OUT_CCDIST0_VEC_ENA((vs->clip_dist_write &
0x0F) != 0) |
S_02881C_VS_OUT_CCDIST1_VEC_ENA((vs->clip_dist_write &
0xF0) != 0) |
S_02881C_VS_OUT_MISC_VEC_ENA(vs->vs_out_misc_write) |
--
1.8.3.2
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