Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/intern/cycles/render/constant_fold.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'intern/cycles/render/constant_fold.cpp')
-rw-r--r--intern/cycles/render/constant_fold.cpp451
1 files changed, 0 insertions, 451 deletions
diff --git a/intern/cycles/render/constant_fold.cpp b/intern/cycles/render/constant_fold.cpp
deleted file mode 100644
index a4d40ae8183..00000000000
--- a/intern/cycles/render/constant_fold.cpp
+++ /dev/null
@@ -1,451 +0,0 @@
-/*
- * Copyright 2011-2013 Blender Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "render/constant_fold.h"
-#include "render/graph.h"
-
-#include "util/util_foreach.h"
-#include "util/util_logging.h"
-
-CCL_NAMESPACE_BEGIN
-
-ConstantFolder::ConstantFolder(ShaderGraph *graph,
- ShaderNode *node,
- ShaderOutput *output,
- Scene *scene)
- : graph(graph), node(node), output(output), scene(scene)
-{
-}
-
-bool ConstantFolder::all_inputs_constant() const
-{
- foreach (ShaderInput *input, node->inputs) {
- if (input->link) {
- return false;
- }
- }
-
- return true;
-}
-
-void ConstantFolder::make_constant(float value) const
-{
- VLOG(1) << "Folding " << node->name << "::" << output->name() << " to constant (" << value
- << ").";
-
- foreach (ShaderInput *sock, output->links) {
- sock->set(value);
- sock->constant_folded_in = true;
- }
-
- graph->disconnect(output);
-}
-
-void ConstantFolder::make_constant(float3 value) const
-{
- VLOG(1) << "Folding " << node->name << "::" << output->name() << " to constant " << value << ".";
-
- foreach (ShaderInput *sock, output->links) {
- sock->set(value);
- sock->constant_folded_in = true;
- }
-
- graph->disconnect(output);
-}
-
-void ConstantFolder::make_constant_clamp(float value, bool clamp) const
-{
- make_constant(clamp ? saturate(value) : value);
-}
-
-void ConstantFolder::make_constant_clamp(float3 value, bool clamp) const
-{
- if (clamp) {
- value.x = saturate(value.x);
- value.y = saturate(value.y);
- value.z = saturate(value.z);
- }
-
- make_constant(value);
-}
-
-void ConstantFolder::make_zero() const
-{
- if (output->type() == SocketType::FLOAT) {
- make_constant(0.0f);
- }
- else if (SocketType::is_float3(output->type())) {
- make_constant(zero_float3());
- }
- else {
- assert(0);
- }
-}
-
-void ConstantFolder::make_one() const
-{
- if (output->type() == SocketType::FLOAT) {
- make_constant(1.0f);
- }
- else if (SocketType::is_float3(output->type())) {
- make_constant(one_float3());
- }
- else {
- assert(0);
- }
-}
-
-void ConstantFolder::bypass(ShaderOutput *new_output) const
-{
- assert(new_output);
-
- VLOG(1) << "Folding " << node->name << "::" << output->name() << " to socket "
- << new_output->parent->name << "::" << new_output->name() << ".";
-
- /* Remove all outgoing links from socket and connect them to new_output instead.
- * The graph->relink method affects node inputs, so it's not safe to use in constant
- * folding if the node has multiple outputs and will thus be folded multiple times. */
- vector<ShaderInput *> outputs = output->links;
-
- graph->disconnect(output);
-
- foreach (ShaderInput *sock, outputs) {
- graph->connect(new_output, sock);
- }
-}
-
-void ConstantFolder::discard() const
-{
- assert(output->type() == SocketType::CLOSURE);
-
- VLOG(1) << "Discarding closure " << node->name << ".";
-
- graph->disconnect(output);
-}
-
-void ConstantFolder::bypass_or_discard(ShaderInput *input) const
-{
- assert(input->type() == SocketType::CLOSURE);
-
- if (input->link) {
- bypass(input->link);
- }
- else {
- discard();
- }
-}
-
-bool ConstantFolder::try_bypass_or_make_constant(ShaderInput *input, bool clamp) const
-{
- if (input->type() != output->type()) {
- return false;
- }
- else if (!input->link) {
- if (input->type() == SocketType::FLOAT) {
- make_constant_clamp(node->get_float(input->socket_type), clamp);
- return true;
- }
- else if (SocketType::is_float3(input->type())) {
- make_constant_clamp(node->get_float3(input->socket_type), clamp);
- return true;
- }
- }
- else if (!clamp) {
- bypass(input->link);
- return true;
- }
- else {
- /* disconnect other inputs if we can't fully bypass due to clamp */
- foreach (ShaderInput *other, node->inputs) {
- if (other != input && other->link) {
- graph->disconnect(other);
- }
- }
- }
-
- return false;
-}
-
-bool ConstantFolder::is_zero(ShaderInput *input) const
-{
- if (!input->link) {
- if (input->type() == SocketType::FLOAT) {
- return node->get_float(input->socket_type) == 0.0f;
- }
- else if (SocketType::is_float3(input->type())) {
- return node->get_float3(input->socket_type) == zero_float3();
- }
- }
-
- return false;
-}
-
-bool ConstantFolder::is_one(ShaderInput *input) const
-{
- if (!input->link) {
- if (input->type() == SocketType::FLOAT) {
- return node->get_float(input->socket_type) == 1.0f;
- }
- else if (SocketType::is_float3(input->type())) {
- return node->get_float3(input->socket_type) == one_float3();
- }
- }
-
- return false;
-}
-
-/* Specific nodes */
-
-void ConstantFolder::fold_mix(NodeMix type, bool clamp) const
-{
- ShaderInput *fac_in = node->input("Fac");
- ShaderInput *color1_in = node->input("Color1");
- ShaderInput *color2_in = node->input("Color2");
-
- float fac = saturate(node->get_float(fac_in->socket_type));
- bool fac_is_zero = !fac_in->link && fac == 0.0f;
- bool fac_is_one = !fac_in->link && fac == 1.0f;
-
- /* remove no-op node when factor is 0.0 */
- if (fac_is_zero) {
- /* note that some of the modes will clamp out of bounds values even without use_clamp */
- if (!(type == NODE_MIX_LIGHT || type == NODE_MIX_DODGE || type == NODE_MIX_BURN)) {
- if (try_bypass_or_make_constant(color1_in, clamp)) {
- return;
- }
- }
- }
-
- switch (type) {
- case NODE_MIX_BLEND:
- /* remove useless mix colors nodes */
- if (color1_in->link && color2_in->link) {
- if (color1_in->link == color2_in->link) {
- try_bypass_or_make_constant(color1_in, clamp);
- break;
- }
- }
- else if (!color1_in->link && !color2_in->link) {
- float3 color1 = node->get_float3(color1_in->socket_type);
- float3 color2 = node->get_float3(color2_in->socket_type);
- if (color1 == color2) {
- try_bypass_or_make_constant(color1_in, clamp);
- break;
- }
- }
- /* remove no-op mix color node when factor is 1.0 */
- if (fac_is_one) {
- try_bypass_or_make_constant(color2_in, clamp);
- break;
- }
- break;
- case NODE_MIX_ADD:
- /* 0 + X (fac 1) == X */
- if (is_zero(color1_in) && fac_is_one) {
- try_bypass_or_make_constant(color2_in, clamp);
- }
- /* X + 0 (fac ?) == X */
- else if (is_zero(color2_in)) {
- try_bypass_or_make_constant(color1_in, clamp);
- }
- break;
- case NODE_MIX_SUB:
- /* X - 0 (fac ?) == X */
- if (is_zero(color2_in)) {
- try_bypass_or_make_constant(color1_in, clamp);
- }
- /* X - X (fac 1) == 0 */
- else if (color1_in->link && color1_in->link == color2_in->link && fac_is_one) {
- make_zero();
- }
- break;
- case NODE_MIX_MUL:
- /* X * 1 (fac ?) == X, 1 * X (fac 1) == X */
- if (is_one(color1_in) && fac_is_one) {
- try_bypass_or_make_constant(color2_in, clamp);
- }
- else if (is_one(color2_in)) {
- try_bypass_or_make_constant(color1_in, clamp);
- }
- /* 0 * ? (fac ?) == 0, ? * 0 (fac 1) == 0 */
- else if (is_zero(color1_in)) {
- make_zero();
- }
- else if (is_zero(color2_in) && fac_is_one) {
- make_zero();
- }
- break;
- case NODE_MIX_DIV:
- /* X / 1 (fac ?) == X */
- if (is_one(color2_in)) {
- try_bypass_or_make_constant(color1_in, clamp);
- }
- /* 0 / ? (fac ?) == 0 */
- else if (is_zero(color1_in)) {
- make_zero();
- }
- break;
- default:
- break;
- }
-}
-
-void ConstantFolder::fold_math(NodeMathType type) const
-{
- ShaderInput *value1_in = node->input("Value1");
- ShaderInput *value2_in = node->input("Value2");
-
- switch (type) {
- case NODE_MATH_ADD:
- /* X + 0 == 0 + X == X */
- if (is_zero(value1_in)) {
- try_bypass_or_make_constant(value2_in);
- }
- else if (is_zero(value2_in)) {
- try_bypass_or_make_constant(value1_in);
- }
- break;
- case NODE_MATH_SUBTRACT:
- /* X - 0 == X */
- if (is_zero(value2_in)) {
- try_bypass_or_make_constant(value1_in);
- }
- break;
- case NODE_MATH_MULTIPLY:
- /* X * 1 == 1 * X == X */
- if (is_one(value1_in)) {
- try_bypass_or_make_constant(value2_in);
- }
- else if (is_one(value2_in)) {
- try_bypass_or_make_constant(value1_in);
- }
- /* X * 0 == 0 * X == 0 */
- else if (is_zero(value1_in) || is_zero(value2_in)) {
- make_zero();
- }
- break;
- case NODE_MATH_DIVIDE:
- /* X / 1 == X */
- if (is_one(value2_in)) {
- try_bypass_or_make_constant(value1_in);
- }
- /* 0 / X == 0 */
- else if (is_zero(value1_in)) {
- make_zero();
- }
- break;
- case NODE_MATH_POWER:
- /* 1 ^ X == X ^ 0 == 1 */
- if (is_one(value1_in) || is_zero(value2_in)) {
- make_one();
- }
- /* X ^ 1 == X */
- else if (is_one(value2_in)) {
- try_bypass_or_make_constant(value1_in);
- }
- default:
- break;
- }
-}
-
-void ConstantFolder::fold_vector_math(NodeVectorMathType type) const
-{
- ShaderInput *vector1_in = node->input("Vector1");
- ShaderInput *vector2_in = node->input("Vector2");
- ShaderInput *scale_in = node->input("Scale");
-
- switch (type) {
- case NODE_VECTOR_MATH_ADD:
- /* X + 0 == 0 + X == X */
- if (is_zero(vector1_in)) {
- try_bypass_or_make_constant(vector2_in);
- }
- else if (is_zero(vector2_in)) {
- try_bypass_or_make_constant(vector1_in);
- }
- break;
- case NODE_VECTOR_MATH_SUBTRACT:
- /* X - 0 == X */
- if (is_zero(vector2_in)) {
- try_bypass_or_make_constant(vector1_in);
- }
- break;
- case NODE_VECTOR_MATH_MULTIPLY:
- /* X * 0 == 0 * X == 0 */
- if (is_zero(vector1_in) || is_zero(vector2_in)) {
- make_zero();
- } /* X * 1 == 1 * X == X */
- else if (is_one(vector1_in)) {
- try_bypass_or_make_constant(vector2_in);
- }
- else if (is_one(vector2_in)) {
- try_bypass_or_make_constant(vector1_in);
- }
- break;
- case NODE_VECTOR_MATH_DIVIDE:
- /* X / 0 == 0 / X == 0 */
- if (is_zero(vector1_in) || is_zero(vector2_in)) {
- make_zero();
- } /* X / 1 == X */
- else if (is_one(vector2_in)) {
- try_bypass_or_make_constant(vector1_in);
- }
- break;
- case NODE_VECTOR_MATH_DOT_PRODUCT:
- case NODE_VECTOR_MATH_CROSS_PRODUCT:
- /* X * 0 == 0 * X == 0 */
- if (is_zero(vector1_in) || is_zero(vector2_in)) {
- make_zero();
- }
- break;
- case NODE_VECTOR_MATH_LENGTH:
- case NODE_VECTOR_MATH_ABSOLUTE:
- if (is_zero(vector1_in)) {
- make_zero();
- }
- break;
- case NODE_VECTOR_MATH_SCALE:
- /* X * 0 == 0 * X == 0 */
- if (is_zero(vector1_in) || is_zero(scale_in)) {
- make_zero();
- } /* X * 1 == X */
- else if (is_one(scale_in)) {
- try_bypass_or_make_constant(vector1_in);
- }
- break;
- default:
- break;
- }
-}
-
-void ConstantFolder::fold_mapping(NodeMappingType type) const
-{
- ShaderInput *vector_in = node->input("Vector");
- ShaderInput *location_in = node->input("Location");
- ShaderInput *rotation_in = node->input("Rotation");
- ShaderInput *scale_in = node->input("Scale");
-
- if (is_zero(scale_in)) {
- make_zero();
- }
- else if ((is_zero(location_in) || type == NODE_MAPPING_TYPE_VECTOR ||
- type == NODE_MAPPING_TYPE_NORMAL) &&
- is_zero(rotation_in) && is_one(scale_in)) {
- try_bypass_or_make_constant(vector_in);
- }
-}
-
-CCL_NAMESPACE_END
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-18 19:33:12 +0300