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Shader: Add support for numerical fors

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This commit is contained in:
Jérôme Leclercq
2022-01-06 20:38:55 +01:00
parent 972d5ffd3f
commit 756fd773a9
24 changed files with 746 additions and 134 deletions
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154
tests/Engine/Shader/Loops.cpp
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@@ -88,6 +88,160 @@ OpStore
OpBranch
OpLabel
OpReturn
OpFunctionEnd)");
}
WHEN("using a for range")
{
std::string_view nzslSource = R"(
[entry(frag)]
fn main()
{
let x = 0;
for v in 0 -> 10
{
x += v;
}
}
)";
Nz::ShaderAst::StatementPtr shader = Nz::ShaderLang::Parse(nzslSource);
ExpectGLSL(*shader, R"(
void main()
{
int x = 0;
int v = 0;
int to = 10;
while (v < to)
{
x += v;
v += 1;
}
}
)");
ExpectNZSL(*shader, R"(
[entry(frag)]
fn main()
{
let x: i32 = 0;
for v in 0 -> 10
{
x += v;
}
}
)");
ExpectSpirV(*shader, R"(
OpFunction
OpLabel
OpVariable
OpVariable
OpVariable
OpStore
OpStore
OpStore
OpBranch
OpLabel
OpLoad
OpLoad
OpSLessThan
OpLoopMerge
OpBranchConditional
OpLabel
OpLoad
OpLoad
OpIAdd
OpStore
OpLoad
OpIAdd
OpStore
OpBranch
OpLabel
OpReturn
OpFunctionEnd)");
}
WHEN("using a for range with step")
{
std::string_view nzslSource = R"(
[entry(frag)]
fn main()
{
let x = 0;
for v in 0 -> 10 : 2
{
x += v;
}
}
)";
Nz::ShaderAst::StatementPtr shader = Nz::ShaderLang::Parse(nzslSource);
ExpectGLSL(*shader, R"(
void main()
{
int x = 0;
int v = 0;
int to = 10;
int step = 2;
while (v < to)
{
x += v;
v += step;
}
}
)");
ExpectNZSL(*shader, R"(
[entry(frag)]
fn main()
{
let x: i32 = 0;
for v in 0 -> 10 : 2
{
x += v;
}
}
)");
ExpectSpirV(*shader, R"(
OpFunction
OpLabel
OpVariable
OpVariable
OpVariable
OpVariable
OpStore
OpStore
OpStore
OpStore
OpBranch
OpLabel
OpLoad
OpLoad
OpSLessThan
OpLoopMerge
OpBranchConditional
OpLabel
OpLoad
OpLoad
OpIAdd
OpStore
OpLoad
OpLoad
OpIAdd
OpStore
OpBranch
OpLabel
OpReturn
OpFunctionEnd)");
}