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Merge pull request #655 from bunnei/pred-lt-nan

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gl_shader_decompiler: Implement PredCondition::LessThanWithNan.
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bunnei 2018-07-12 18:59:15 -07:00 committed by GitHub
commit 64b5e5d5d9
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2 changed files with 7 additions and 5 deletions
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1
src/video_core/engines/shader_bytecode.h
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@ -142,6 +142,7 @@ enum class PredCondition : u64 {
GreaterThan = 4,
NotEqual = 5,
GreaterEqual = 6,
LessThanWithNan = 9,
NotEqualWithNan = 13,
// TODO(Subv): Other condition types
};

11
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -728,10 +728,10 @@ private:
const std::string& op_a, const std::string& op_b) const {
using Tegra::Shader::PredCondition;
static const std::unordered_map<PredCondition, const char*> PredicateComparisonStrings = {
{PredCondition::LessThan, "<"}, {PredCondition::Equal, "=="},
{PredCondition::LessEqual, "<="}, {PredCondition::GreaterThan, ">"},
{PredCondition::NotEqual, "!="}, {PredCondition::GreaterEqual, ">="},
{PredCondition::NotEqualWithNan, "!="},
{PredCondition::LessThan, "<"}, {PredCondition::Equal, "=="},
{PredCondition::LessEqual, "<="}, {PredCondition::GreaterThan, ">"},
{PredCondition::NotEqual, "!="}, {PredCondition::GreaterEqual, ">="},
{PredCondition::LessThanWithNan, "<"}, {PredCondition::NotEqualWithNan, "!="},
};
const auto& comparison{PredicateComparisonStrings.find(condition)};
@ -739,7 +739,8 @@ private:
"Unknown predicate comparison operation");
std::string predicate{'(' + op_a + ") " + comparison->second + " (" + op_b + ')'};
if (condition == PredCondition::NotEqualWithNan) {
if (condition == PredCondition::LessThanWithNan ||
condition == PredCondition::NotEqualWithNan) {
predicate += " || isnan(" + op_a + ") || isnan(" + op_b + ')';
}