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Differential D5481 Diff 17221 intern/cycles/render/constant_fold.cpp

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intern/cycles/render/constant_fold.cpp

Show First 20 Lines • Show All 295 Lines • ▼ Show 20 Lines case NODE_MIX_DIV:
make_zero(); make_zero();
} }
break; break;
default: default:
break; break;
} }
} }
void ConstantFolder::fold_math(NodeMath type, bool clamp) const void ConstantFolder::fold_math(NodeMathType type) const
{ {
ShaderInput *value1_in = node->input("Value1"); ShaderInput *a_in = node->input("Value1");
ShaderInput *value2_in = node->input("Value2"); ShaderInput *b_in = node->input("Value2");
switch (type) { switch (type) {
case NODE_MATH_ADD: case NODE_MATH_ADD:
/* X + 0 == 0 + X == X */ /* X + 0 == 0 + X == X */
if (is_zero(value1_in)) { if (is_zero(a_in)) {
try_bypass_or_make_constant(value2_in, clamp); try_bypass_or_make_constant(b_in);
} }
else if (is_zero(value2_in)) { else if (is_zero(b_in)) {
try_bypass_or_make_constant(value1_in, clamp); try_bypass_or_make_constant(a_in);
} }
break; break;
case NODE_MATH_SUBTRACT: case NODE_MATH_SUBTRACT:
/* X - 0 == X */ /* X - 0 == X */
if (is_zero(value2_in)) { if (is_zero(b_in)) {
try_bypass_or_make_constant(value1_in, clamp); try_bypass_or_make_constant(a_in);
} }
break; break;
case NODE_MATH_MULTIPLY: case NODE_MATH_MULTIPLY:
/* X * 1 == 1 * X == X */ /* X * 1 == 1 * X == X */
if (is_one(value1_in)) { if (is_one(a_in)) {
try_bypass_or_make_constant(value2_in, clamp); try_bypass_or_make_constant(b_in);
} }
else if (is_one(value2_in)) { else if (is_one(b_in)) {
try_bypass_or_make_constant(value1_in, clamp); try_bypass_or_make_constant(a_in);
} }
/* X * 0 == 0 * X == 0 */ /* X * 0 == 0 * X == 0 */
else if (is_zero(value1_in) || is_zero(value2_in)) { else if (is_zero(a_in) || is_zero(b_in)) {
make_zero(); make_zero();
} }
break; break;
case NODE_MATH_DIVIDE: case NODE_MATH_DIVIDE:
/* X / 1 == X */ /* X / 1 == X */
if (is_one(value2_in)) { if (is_one(b_in)) {
try_bypass_or_make_constant(value1_in, clamp); try_bypass_or_make_constant(a_in);
} }
/* 0 / X == 0 */ /* 0 / X == 0 */
else if (is_zero(value1_in)) { else if (is_zero(a_in)) {
make_zero(); make_zero();
} }
break; break;
case NODE_MATH_POWER: case NODE_MATH_POWER:
/* 1 ^ X == X ^ 0 == 1 */ /* 1 ^ X == X ^ 0 == 1 */
if (is_one(value1_in) || is_zero(value2_in)) { if (is_one(a_in) || is_zero(b_in)) {
make_one(); make_one();
} }
/* X ^ 1 == X */ /* X ^ 1 == X */
else if (is_one(value2_in)) { else if (is_one(b_in)) {
try_bypass_or_make_constant(value1_in, clamp); try_bypass_or_make_constant(a_in);
} }
default: default:
break; break;
} }
} }
void ConstantFolder::fold_vector_math(NodeVectorMath type) const void ConstantFolder::fold_vector_math(NodeVectorMath type) const
{ {
Show All 32 Lines