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llvmpipe: handle multisample color stores.

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Extract the final per-sample masks and store to the multisample
color buffers using them.

This retypes the pointer to a uint8_t at entry to make the
GEP simpler, then recasts to the blend type.

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 2020-03-20 14:10:48 +10:00 • committed by Marge Bot
parent 102558912b
commit 210d714f46
1 changed files with 35 additions and 12 deletions
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41
src/gallium/drivers/llvmpipe/lp_state_fs.c
View file

@ -2612,7 +2612,7 @@ generate_fragment(struct llvmpipe_context *lp,
struct lp_build_sampler_soa *sampler;
struct lp_build_image_soa *image;
struct lp_build_interp_soa_context interp;
LLVMValueRef fs_mask[16 / 4];
LLVMValueRef fs_mask[(16 / 4) * LP_MAX_SAMPLES];
LLVMValueRef fs_out_color[PIPE_MAX_COLOR_BUFS][TGSI_NUM_CHANNELS][16 / 4];
LLVMValueRef function;
LLVMValueRef facing;
@ -2678,7 +2678,7 @@ generate_fragment(struct llvmpipe_context *lp,
arg_types[4] = LLVMPointerType(fs_elem_type, 0); /* a0 */
arg_types[5] = LLVMPointerType(fs_elem_type, 0); /* dadx */
arg_types[6] = LLVMPointerType(fs_elem_type, 0); /* dady */
arg_types[7] = LLVMPointerType(LLVMPointerType(blend_vec_type, 0), 0); /* color */
arg_types[7] = LLVMPointerType(LLVMPointerType(int8_type, 0), 0); /* color */
arg_types[8] = LLVMPointerType(int8_type, 0); /* depth */
arg_types[9] = LLVMInt64TypeInContext(gallivm->context); /* mask_input */
arg_types[10] = variant->jit_thread_data_ptr_type; /* per thread data */
@ -2857,9 +2857,15 @@ generate_fragment(struct llvmpipe_context *lp,
for (i = 0; i < num_fs; i++) {
LLVMValueRef indexi = lp_build_const_int32(gallivm, i);
LLVMValueRef ptr = LLVMBuildGEP(builder, mask_store,
&indexi, 1, "");
fs_mask[i] = LLVMBuildLoad(builder, ptr, "mask");
LLVMValueRef ptr;
for (unsigned s = 0; s < key->coverage_samples; s++) {
int idx = (i + (s * num_fs));
LLVMValueRef sindexi = lp_build_const_int32(gallivm, idx);
ptr = LLVMBuildGEP(builder, mask_store, &sindexi, 1, "");
fs_mask[idx] = LLVMBuildLoad(builder, ptr, "smask");
}
/* This is fucked up need to reorganize things */
for (cbuf = 0; cbuf < key->nr_cbufs; cbuf++) {
for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
@ -2889,6 +2895,7 @@ generate_fragment(struct llvmpipe_context *lp,
if (key->cbuf_format[cbuf] != PIPE_FORMAT_NONE) {
LLVMValueRef color_ptr;
LLVMValueRef stride;
LLVMValueRef sample_stride = NULL;
LLVMValueRef index = lp_build_const_int32(gallivm, cbuf);
boolean do_branch = ((key->depth.enabled
@ -2901,19 +2908,35 @@ generate_fragment(struct llvmpipe_context *lp,
&index, 1, ""),
"");
lp_build_name(color_ptr, "color_ptr%d", cbuf);
stride = LLVMBuildLoad(builder,
LLVMBuildGEP(builder, stride_ptr, &index, 1, ""),
"");
if (key->multisample)
sample_stride = LLVMBuildLoad(builder,
LLVMBuildGEP(builder, color_sample_stride_ptr,
&index, 1, ""), "");
for (unsigned s = 0; s < key->cbuf_nr_samples[cbuf]; s++) {
unsigned mask_idx = num_fs * (key->multisample ? s : 0);
LLVMValueRef out_ptr = color_ptr;;
if (key->multisample) {
LLVMValueRef sample_offset = LLVMBuildMul(builder, sample_stride, lp_build_const_int32(gallivm, s), "");
out_ptr = LLVMBuildGEP(builder, out_ptr, &sample_offset, 1, "");
}
out_ptr = LLVMBuildBitCast(builder, out_ptr, LLVMPointerType(blend_vec_type, 0), "");
lp_build_name(out_ptr, "color_ptr%d", cbuf);
generate_unswizzled_blend(gallivm, cbuf, variant,
key->cbuf_format[cbuf],
num_fs, fs_type, fs_mask, fs_out_color,
context_ptr, color_ptr, stride,
num_fs, fs_type, &fs_mask[mask_idx], fs_out_color,
context_ptr, out_ptr, stride,
partial_mask, do_branch);
}
}
}
LLVMBuildRetVoid(builder);