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Handle single-argument constructors in shaders.

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Expand these (fill vectors, fill matrix diagonals) in _reduce_expression() so they're handled properly even as uniform default values (where they previously caused a crash).
This commit is contained in:
Benjamin 2018-01-22 22:31:58 +01:00
parent 511742eb68
commit 311e69aa1e
1 changed files with 54 additions and 0 deletions
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54
servers/visual/shader_language.cpp
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@ -3100,6 +3100,60 @@ ShaderLanguage::Node *ShaderLanguage::_reduce_expression(BlockNode *p_block, Sha
}
}
// Passed a single argument
if (op->arguments.size() <= 2) {
if (op->get_datatype() < TYPE_MAT2) {
// Scalar or vector
int dimensions = 0;
switch (op->get_datatype()) {
case TYPE_VEC2:
case TYPE_BVEC2:
case TYPE_UVEC2:
case TYPE_IVEC2: {
dimensions = 2;
} break;
case TYPE_VEC3:
case TYPE_BVEC3:
case TYPE_UVEC3:
case TYPE_IVEC3: {
dimensions = 3;
} break;
case TYPE_VEC4:
case TYPE_BVEC4:
case TYPE_UVEC4:
case TYPE_IVEC4: {
dimensions = 4;
} break;
}
if (dimensions) {
ConstantNode::Value val = values[0];
for (int i = 1; i < dimensions; i++) {
values.push_back(val);
}
}
} else if (op->get_datatype() <= TYPE_MAT4) {
// Matrix
int dimensions = 0;
switch (op->get_datatype()) {
case TYPE_MAT2: dimensions = 2; break;
case TYPE_MAT3: dimensions = 3; break;
case TYPE_MAT4: dimensions = 4; break;
}
// Fill the diagonal with the value, the rest with zeroes
ConstantNode::Value val = values[0];
for (int i = 1; i < dimensions * dimensions; i++) {
if (i % (dimensions + 1) == 0) {
values.push_back(val);
} else {
values.push_back(ConstantNode::Value());
}
}
}
}
ConstantNode *cn = alloc_node<ConstantNode>();
cn->datatype = op->get_datatype();
cn->values = values;