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llvmpipe: add per-sample interpolation.

Browse source 
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4122>
This commit is contained in:
Dave Airlie 2020-03-19 15:40:31 +10:00 • committed by Marge Bot
parent 8154bdf25b
commit 18fd62a26e
3 changed files with 17 additions and 6 deletions
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18
src/gallium/drivers/llvmpipe/lp_bld_interp.c
View file

@ -241,6 +241,7 @@ attribs_update_simple(struct lp_build_interp_soa_context *bld,
struct gallivm_state *gallivm,
LLVMValueRef loop_iter,
LLVMValueRef mask_store,
LLVMValueRef sample_id,
int start,
int end)
{
@ -312,7 +313,15 @@ attribs_update_simple(struct lp_build_interp_soa_context *bld,
if (bld->coverage_samples > 1) {
LLVMValueRef xoffset = lp_build_const_vec(gallivm, coeff_bld->type, bld->pos_offset);
LLVMValueRef yoffset = lp_build_const_vec(gallivm, coeff_bld->type, bld->pos_offset);
if (loc == TGSI_INTERPOLATE_LOC_CENTROID) {
if (loc == TGSI_INTERPOLATE_LOC_SAMPLE) {
LLVMValueRef x_val_idx = LLVMBuildMul(gallivm->builder, sample_id, lp_build_const_int32(gallivm, 2), "");
LLVMValueRef y_val_idx = LLVMBuildAdd(gallivm->builder, x_val_idx, lp_build_const_int32(gallivm, 1), "");
x_val_idx = LLVMBuildGEP(builder, bld->sample_pos_array, &x_val_idx, 1, "");
y_val_idx = LLVMBuildGEP(builder, bld->sample_pos_array, &y_val_idx, 1, "");
xoffset = lp_build_broadcast_scalar(coeff_bld, LLVMBuildLoad(builder, x_val_idx, ""));
yoffset = lp_build_broadcast_scalar(coeff_bld, LLVMBuildLoad(builder, y_val_idx, ""));
} else if (loc == TGSI_INTERPOLATE_LOC_CENTROID) {
LLVMValueRef centroid_x_offset = lp_build_const_vec(gallivm, coeff_bld->type, bld->pos_offset);
LLVMValueRef centroid_y_offset = lp_build_const_vec(gallivm, coeff_bld->type, bld->pos_offset);
@ -859,10 +868,11 @@ void
lp_build_interp_soa_update_inputs_dyn(struct lp_build_interp_soa_context *bld,
struct gallivm_state *gallivm,
LLVMValueRef quad_start_index,
LLVMValueRef mask_store)
LLVMValueRef mask_store,
LLVMValueRef sample_id)
{
if (bld->simple_interp) {
attribs_update_simple(bld, gallivm, quad_start_index, mask_store, 1, bld->num_attribs);
attribs_update_simple(bld, gallivm, quad_start_index, mask_store, sample_id, 1, bld->num_attribs);
}
else {
attribs_update(bld, gallivm, quad_start_index, 1, bld->num_attribs);
@ -875,7 +885,7 @@ lp_build_interp_soa_update_pos_dyn(struct lp_build_interp_soa_context *bld,
LLVMValueRef quad_start_index)
{
if (bld->simple_interp) {
attribs_update_simple(bld, gallivm, quad_start_index, NULL, 0, 1);
attribs_update_simple(bld, gallivm, quad_start_index, NULL, NULL, 0, 1);
}
else {
attribs_update(bld, gallivm, quad_start_index, 0, 1);

3
src/gallium/drivers/llvmpipe/lp_bld_interp.h
View file

@ -138,7 +138,8 @@ void
lp_build_interp_soa_update_inputs_dyn(struct lp_build_interp_soa_context *bld,
struct gallivm_state *gallivm,
LLVMValueRef quad_start_index,
LLVMValueRef mask_store);
LLVMValueRef mask_store,
LLVMValueRef sample_id);
void
lp_build_interp_soa_update_pos_dyn(struct lp_build_interp_soa_context *bld,

2
src/gallium/drivers/llvmpipe/lp_state_fs.c
View file

@ -492,7 +492,7 @@ generate_fs_loop(struct gallivm_state *gallivm,
lp_build_mask_check(&mask);
}
lp_build_interp_soa_update_inputs_dyn(interp, gallivm, loop_state.counter, NULL);
lp_build_interp_soa_update_inputs_dyn(interp, gallivm, loop_state.counter, NULL, NULL);
struct lp_build_tgsi_params params;
memset(&params, 0, sizeof(params));