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HLSL: add optional position.Y inversion

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Adds command line options:

   --invert-y
   --iy

(synonyms) which invert position.Y on vertex shader output.  Handles these cases:

* Direct single variable return
* Member of direct returned struct
* Single variable output parameter
* Member of struct output parameter

API:

    // Enables position.Y output negation in vertex shader
    void TShader::setInvertY(bool invert);

Fixes #1173
This commit is contained in:
LoopDawg 2017-12-06 16:52:03 -07:00
parent 471bfed062
commit b22c069f7a
13 changed files with 549 additions and 1 deletions
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2
glslang/MachineIndependent/ShaderLang.cpp
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@ -1686,6 +1686,8 @@ void TShader::setShiftUavBinding(unsigned int base) { setShiftBinding(EResUa
void TShader::setShiftSsboBinding(unsigned int base) { setShiftBinding(EResSsbo, base); }
// Enables binding automapping using TIoMapper
void TShader::setAutoMapBindings(bool map) { intermediate->setAutoMapBindings(map); }
// Enables position.Y output negation in vertex shader
void TShader::setInvertY(bool invert) { intermediate->setInvertY(invert); }
// Fragile: currently within one stage: simple auto-assignment of location
void TShader::setAutoMapLocations(bool map) { intermediate->setAutoMapLocations(map); }
// See comment above TDefaultHlslIoMapper in iomapper.cpp: