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-rw-r--r--src/gallium/auxiliary/draw/draw_llvm.c190
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.c24
-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.h6
3 files changed, 134 insertions, 86 deletions
diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c
index 3b5685626bb..2f82d9dee84 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_llvm.c
@@ -659,85 +659,42 @@ generate_vs(struct draw_llvm_variant *variant,
static void
generate_fetch(struct gallivm_state *gallivm,
struct draw_context *draw,
- LLVMValueRef vbuffers_ptr,
+ const struct util_format_description *format_desc,
+ LLVMValueRef vb_stride,
+ LLVMValueRef stride_fixed,
+ LLVMValueRef map_ptr,
+ LLVMValueRef buffer_size_adj,
+ LLVMValueRef ofbit,
LLVMValueRef *res,
- struct pipe_vertex_element *velem,
- LLVMValueRef vbuf,
- LLVMValueRef index,
- LLVMValueRef instance_id,
- LLVMValueRef start_instance)
+ LLVMValueRef index)
{
- const struct util_format_description *format_desc =
- util_format_description(velem->src_format);
LLVMValueRef zero = LLVMConstNull(LLVMInt32TypeInContext(gallivm->context));
LLVMBuilderRef builder = gallivm->builder;
- LLVMValueRef indices =
- LLVMConstInt(LLVMInt64TypeInContext(gallivm->context),
- velem->vertex_buffer_index, 0);
- LLVMValueRef vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr,
- &indices, 1, "");
- LLVMValueRef vb_stride = draw_jit_vbuffer_stride(gallivm, vbuf);
- LLVMValueRef vb_buffer_offset = draw_jit_vbuffer_offset(gallivm, vbuf);
- LLVMValueRef map_ptr = draw_jit_dvbuffer_map(gallivm, vbuffer_ptr);
- LLVMValueRef buffer_size = draw_jit_dvbuffer_size(gallivm, vbuffer_ptr);
LLVMValueRef stride;
LLVMValueRef buffer_overflowed;
- LLVMValueRef needed_buffer_size;
LLVMValueRef temp_ptr =
lp_build_alloca(gallivm,
lp_build_vec_type(gallivm, lp_float32_vec4_type()), "");
- LLVMValueRef ofbit = NULL;
struct lp_build_if_state if_ctx;
- if (velem->src_format == PIPE_FORMAT_NONE) {
+ if (format_desc->format == PIPE_FORMAT_NONE) {
*res = lp_build_const_vec(gallivm, lp_float32_vec4_type(), 0);
return;
}
- if (velem->instance_divisor) {
- /* Index is equal to the start instance plus the number of current
- * instance divided by the divisor. In this case we compute it as:
- * index = start_instance + (instance_id / divisor)
- */
- LLVMValueRef current_instance;
- current_instance = LLVMBuildUDiv(builder, instance_id,
- lp_build_const_int32(gallivm, velem->instance_divisor),
- "instance_divisor");
- index = lp_build_uadd_overflow(gallivm, start_instance,
- current_instance, &ofbit);
- }
-
stride = lp_build_umul_overflow(gallivm, vb_stride, index, &ofbit);
- stride = lp_build_uadd_overflow(gallivm, stride, vb_buffer_offset, &ofbit);
- stride = lp_build_uadd_overflow(
- gallivm, stride,
- lp_build_const_int32(gallivm, velem->src_offset), &ofbit);
- needed_buffer_size = lp_build_uadd_overflow(
- gallivm, stride,
- lp_build_const_int32(gallivm,
- util_format_get_blocksize(velem->src_format)),
- &ofbit);
+ stride = lp_build_uadd_overflow(gallivm, stride, stride_fixed, &ofbit);
buffer_overflowed = LLVMBuildICmp(builder, LLVMIntUGT,
- needed_buffer_size, buffer_size,
+ stride, buffer_size_adj,
"buffer_overflowed");
buffer_overflowed = LLVMBuildOr(builder, buffer_overflowed, ofbit, "");
-#if 0
- lp_build_printf(gallivm, "vbuf index = %u, vb_stride is %u\n",
- index, vb_stride);
- lp_build_printf(gallivm, " vb_buffer_offset = %u, src_offset is %u\n",
- vb_buffer_offset,
- lp_build_const_int32(gallivm, velem->src_offset));
- lp_build_print_value(gallivm, " blocksize = ",
- lp_build_const_int32(
- gallivm,
- util_format_get_blocksize(velem->src_format)));
- lp_build_printf(gallivm, " instance_id = %u\n", instance_id);
- lp_build_printf(gallivm, " stride = %u\n", stride);
- lp_build_printf(gallivm, " buffer size = %u\n", buffer_size);
- lp_build_printf(gallivm, " needed_buffer_size = %u\n", needed_buffer_size);
- lp_build_print_value(gallivm, " buffer overflowed = ", buffer_overflowed);
-#endif
+
+ if (0) {
+ lp_build_printf(gallivm, " stride = %u\n", stride);
+ lp_build_printf(gallivm, " buffer size adj = %u\n", buffer_size_adj);
+ lp_build_print_value(gallivm, " buffer overflowed = ", buffer_overflowed);
+ }
lp_build_if(&if_ctx, gallivm, buffer_overflowed);
{
@@ -766,36 +723,34 @@ generate_fetch(struct gallivm_state *gallivm,
static void
convert_to_soa(struct gallivm_state *gallivm,
- LLVMValueRef (*src_aos)[LP_MAX_VECTOR_WIDTH / 32],
+ LLVMValueRef src_aos[LP_MAX_VECTOR_WIDTH / 32],
LLVMValueRef (*dst_soa)[TGSI_NUM_CHANNELS],
- unsigned num_attribs, const struct lp_type soa_type)
+ unsigned attrib, const struct lp_type soa_type)
{
- unsigned i, j, k;
+ unsigned j, k;
struct lp_type aos_channel_type = soa_type;
+ LLVMValueRef aos_channels[TGSI_NUM_CHANNELS];
+ unsigned pixels_per_channel = soa_type.length / TGSI_NUM_CHANNELS;
+
debug_assert(TGSI_NUM_CHANNELS == 4);
debug_assert((soa_type.length % TGSI_NUM_CHANNELS) == 0);
aos_channel_type.length >>= 1;
- for (i = 0; i < num_attribs; ++i) {
- LLVMValueRef aos_channels[TGSI_NUM_CHANNELS];
- unsigned pixels_per_channel = soa_type.length / TGSI_NUM_CHANNELS;
-
- for (j = 0; j < TGSI_NUM_CHANNELS; ++j) {
- LLVMValueRef channel[LP_MAX_VECTOR_LENGTH] = { 0 };
+ for (j = 0; j < TGSI_NUM_CHANNELS; ++j) {
+ LLVMValueRef channel[LP_MAX_VECTOR_LENGTH] = { 0 };
- assert(pixels_per_channel <= LP_MAX_VECTOR_LENGTH);
-
- for (k = 0; k < pixels_per_channel; ++k) {
- channel[k] = src_aos[i][j + TGSI_NUM_CHANNELS * k];
- }
+ assert(pixels_per_channel <= LP_MAX_VECTOR_LENGTH);
- aos_channels[j] = lp_build_concat(gallivm, channel, aos_channel_type, pixels_per_channel);
+ for (k = 0; k < pixels_per_channel; ++k) {
+ channel[k] = src_aos[j + TGSI_NUM_CHANNELS * k];
}
- lp_build_transpose_aos(gallivm, soa_type, aos_channels, dst_soa[i]);
+ aos_channels[j] = lp_build_concat(gallivm, channel, aos_channel_type, pixels_per_channel);
}
+
+ lp_build_transpose_aos(gallivm, soa_type, aos_channels, dst_soa[attrib]);
}
@@ -1549,6 +1504,13 @@ draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant,
LLVMValueRef io_ptr, vbuffers_ptr, vb_ptr;
LLVMValueRef zero = lp_build_const_int32(gallivm, 0);
LLVMValueRef one = lp_build_const_int32(gallivm, 1);
+ LLVMValueRef vb_stride[PIPE_MAX_SHADER_INPUTS];
+ LLVMValueRef map_ptr[PIPE_MAX_SHADER_INPUTS];
+ LLVMValueRef buffer_size_adj[PIPE_MAX_SHADER_INPUTS];
+ LLVMValueRef stride_fixed[PIPE_MAX_SHADER_INPUTS];
+ LLVMValueRef ofbit[PIPE_MAX_SHADER_INPUTS];
+ LLVMValueRef instance_index[PIPE_MAX_SHADER_INPUTS];
+
struct draw_context *draw = llvm->draw;
const struct tgsi_shader_info *vs_info = &draw->vs.vertex_shader->info;
unsigned i, j;
@@ -1693,14 +1655,67 @@ draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant,
fetch_max = LLVMBuildSub(builder, end, one, "fetch_max");
+ /*
+ * Pre-calculate everything which is constant per shader invocation.
+ */
+ for (j = 0; j < draw->pt.nr_vertex_elements; ++j) {
+ LLVMValueRef vb_buffer_offset, buffer_size;
+ LLVMValueRef vb_info, vbuffer_ptr;
+ struct pipe_vertex_element *velem = &draw->pt.vertex_element[j];
+ LLVMValueRef vb_index =
+ lp_build_const_int32(gallivm, velem->vertex_buffer_index);
+ LLVMValueRef bsize = lp_build_const_int32(gallivm,
+ util_format_get_blocksize(velem->src_format));
+ LLVMValueRef src_offset = lp_build_const_int32(gallivm,
+ velem->src_offset);
+
+ vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr, &vb_index, 1, "");
+ vb_info = LLVMBuildGEP(builder, vb_ptr, &vb_index, 1, "");
+ vb_stride[j] = draw_jit_vbuffer_stride(gallivm, vb_info);
+ vb_buffer_offset = draw_jit_vbuffer_offset(gallivm, vb_info);
+ map_ptr[j] = draw_jit_dvbuffer_map(gallivm, vbuffer_ptr);
+ buffer_size = draw_jit_dvbuffer_size(gallivm, vbuffer_ptr);
+
+ ofbit[j] = NULL;
+ stride_fixed[j] = lp_build_uadd_overflow(gallivm, vb_buffer_offset,
+ src_offset, &ofbit[j]);
+ buffer_size_adj[j] = lp_build_usub_overflow(gallivm, buffer_size, bsize,
+ &ofbit[j]);
+
+ if (velem->instance_divisor) {
+ /* Index is equal to the start instance plus the number of current
+ * instance divided by the divisor. In this case we compute it as:
+ * index = start_instance + (instance_id / divisor)
+ */
+ LLVMValueRef current_instance;
+ current_instance = LLVMBuildUDiv(builder, system_values.instance_id,
+ lp_build_const_int32(gallivm,
+ velem->instance_divisor),
+ "instance_divisor");
+ instance_index[j] = lp_build_uadd_overflow(gallivm, start_instance,
+ current_instance, &ofbit[j]);
+ }
+
+ if (0) {
+ lp_build_printf(gallivm, "vbuf index = %u, vb_stride is %u\n",
+ vb_index, vb_stride[j]);
+ lp_build_printf(gallivm, " vb_buffer_offset = %u, src_offset is %u\n",
+ vb_buffer_offset, src_offset);
+ lp_build_print_value(gallivm, " blocksize = ", bsize);
+ lp_build_printf(gallivm, " instance_id = %u\n", system_values.instance_id);
+ lp_build_printf(gallivm, " buffer size = %u\n", buffer_size);
+ }
+ }
+
lp_build_loop_begin(&lp_loop, gallivm, zero);
{
LLVMValueRef inputs[PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS];
- LLVMValueRef aos_attribs[PIPE_MAX_SHADER_INPUTS][LP_MAX_VECTOR_WIDTH / 32] = { { 0 } };
+ LLVMValueRef aos_attribs[LP_MAX_VECTOR_WIDTH / 32] = { 0 };
LLVMValueRef io;
LLVMValueRef clipmask; /* holds the clipmask value */
LLVMValueRef true_index_array = lp_build_zero(gallivm,
lp_type_uint_vec(32, 32*vector_length));
+ LLVMValueRef true_indices[LP_MAX_VECTOR_WIDTH / 32];
const LLVMValueRef (*ptr_aos)[TGSI_NUM_CHANNELS];
io_itr = lp_loop.counter;
@@ -1760,22 +1775,25 @@ draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant,
lp_build_endif(&if_ctx);
true_index = LLVMBuildLoad(builder, index_ptr, "true_index");
}
+ true_indices[i] = true_index;
true_index_array = LLVMBuildInsertElement(
gallivm->builder, true_index_array, true_index,
lp_build_const_int32(gallivm, i), "");
+ }
+
+ for (j = 0; j < key->nr_vertex_elements; ++j) {
+ struct pipe_vertex_element *velem = &draw->pt.vertex_element[j];
+ const struct util_format_description *format_desc =
+ util_format_description(velem->src_format);
- for (j = 0; j < key->nr_vertex_elements; ++j) {
- struct pipe_vertex_element *velem = &draw->pt.vertex_element[j];
- LLVMValueRef vb_index =
- lp_build_const_int32(gallivm, velem->vertex_buffer_index);
- LLVMValueRef vb = LLVMBuildGEP(builder, vb_ptr, &vb_index, 1, "");
- generate_fetch(gallivm, draw, vbuffers_ptr,
- &aos_attribs[j][i], velem, vb, true_index,
- system_values.instance_id, start_instance);
+ for (i = 0; i < vector_length; ++i) {
+ generate_fetch(gallivm, draw, format_desc,
+ vb_stride[j], stride_fixed[j], map_ptr[j],
+ buffer_size_adj[j], ofbit[j], &aos_attribs[i],
+ velem->instance_divisor ? instance_index[j] : true_indices[i]);
}
+ convert_to_soa(gallivm, aos_attribs, inputs, j, vs_type);
}
- convert_to_soa(gallivm, aos_attribs, inputs,
- key->nr_vertex_elements, vs_type);
/* In the paths with elts vertex id has to be unaffected by the
* index bias and because indices inside our elements array have
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.c b/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.c
index 91247fdbc95..152ad573451 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.c
@@ -127,6 +127,30 @@ lp_build_uadd_overflow(struct gallivm_state *gallivm,
}
/**
+ * Performs unsigned subtraction of two integers and reports
+ * overflow if detected.
+ *
+ * The values @a and @b must be of the same integer type. If
+ * an overflow is detected the IN/OUT @ofbit parameter is used:
+ * - if it's pointing to a null value, the overflow bit is simply
+ * stored inside the variable it's pointing to,
+ * - if it's pointing to a valid value, then that variable,
+ * which must be of i1 type, is ORed with the newly detected
+ * overflow bit. This is done to allow chaining of a number of
+ * overflow functions together without having to test the
+ * overflow bit after every single one.
+ */
+LLVMValueRef
+lp_build_usub_overflow(struct gallivm_state *gallivm,
+ LLVMValueRef a,
+ LLVMValueRef b,
+ LLVMValueRef *ofbit)
+{
+ return build_binary_int_overflow(gallivm, "llvm.usub.with.overflow",
+ a, b, ofbit);
+}
+
+/**
* Performs unsigned multiplication of two integers and
* reports overflow if detected.
*
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.h b/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.h
index 8c35a04181b..34ce00ee0e8 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_arit_overflow.h
@@ -49,6 +49,12 @@ lp_build_uadd_overflow(struct gallivm_state *gallivm,
LLVMValueRef *ofbit);
LLVMValueRef
+lp_build_usub_overflow(struct gallivm_state *gallivm,
+ LLVMValueRef a,
+ LLVMValueRef b,
+ LLVMValueRef *ofbit);
+
+LLVMValueRef
lp_build_umul_overflow(struct gallivm_state *gallivm,
LLVMValueRef a,
LLVMValueRef b,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 12:12:48 +0000