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Shader_IR: add the ability to amend code in the shader ir.

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This commit introduces a mechanism by which shader IR code can be
amended and extended. This useful for track algorithms where certain
information can derived from before the track such as indexes to array
samplers.
This commit is contained in:
Fernando Sahmkow
2019-12-30 13:54:53 -04:00
committed by FernandoS27
parent f846e3d6d0
commit b3371ed09e
5 changed files with 72 additions and 3 deletions
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15
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -751,6 +751,11 @@ private:
Expression Visit(const Node& node) {
if (const auto operation = std::get_if<OperationNode>(&*node)) {
auto amend_index = operation->GetAmendIndex();
if (amend_index) {
const Node& amend_node = ir.GetAmendNode(*amend_index);
Visit(amend_node).CheckVoid();
}
const auto operation_index = static_cast<std::size_t>(operation->GetCode());
if (operation_index >= operation_decompilers.size()) {
UNREACHABLE_MSG("Out of bounds operation: {}", operation_index);
@ -872,6 +877,11 @@ private:
}
if (const auto conditional = std::get_if<ConditionalNode>(&*node)) {
auto amend_index = conditional->GetAmendIndex();
if (amend_index) {
const Node& amend_node = ir.GetAmendNode(*amend_index);
Visit(amend_node).CheckVoid();
}
// It's invalid to call conditional on nested nodes, use an operation instead
code.AddLine("if ({}) {{", Visit(conditional->GetCondition()).AsBool());
++code.scope;
@ -884,6 +894,11 @@ private:
}
if (const auto comment = std::get_if<CommentNode>(&*node)) {
auto amend_index = comment->GetAmendIndex();
if (amend_index) {
const Node& amend_node = ir.GetAmendNode(*amend_index);
Visit(amend_node).CheckVoid();
}
code.AddLine("// " + comment->GetText());
return {};
}