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Implement GL_KHR_blend_equation_advanced.

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This commit is contained in:
John Kessenich 2015-08-30 05:43:51 -06:00
parent d6c37b190b
commit c8b2e36f52
8 changed files with 148 additions and 4 deletions
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50
glslang/Include/Types.h
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@ -294,6 +294,30 @@ enum TLayoutDepth {
EldCount
};
enum TBlendEquationShift {
// No 'EBlendNone':
// These are used as bit-shift amounts. A mask of such shifts will have type 'int',
// and in that space, 0 means no bits set, or none. In this enum, 0 means (1 << 0), a bit is set.
EBlendMultiply,
EBlendScreen,
EBlendOverlay,
EBlendDarken,
EBlendLighten,
EBlendColordodge,
EBlendColorburn,
EBlendHardlight,
EBlendSoftlight,
EBlendDifference,
EBlendExclusion,
EBlendHslHue,
EBlendHslSaturation,
EBlendHslColor,
EBlendHslLuminosity,
EBlendAllEquations,
EBlendCount
};
class TQualifier {
public:
void clear()
@ -669,6 +693,28 @@ public:
default: return "none";
}
}
static const char* getBlendEquationString(TBlendEquationShift e)
{
switch (e) {
case EBlendMultiply: return "blend_support_multiply";
case EBlendScreen: return "blend_support_screen";
case EBlendOverlay: return "blend_support_overlay";
case EBlendDarken: return "blend_support_darken";
case EBlendLighten: return "blend_support_lighten";
case EBlendColordodge: return "blend_support_colordodge";
case EBlendColorburn: return "blend_support_colorburn";
case EBlendHardlight: return "blend_support_hardlight";
case EBlendSoftlight: return "blend_support_softlight";
case EBlendDifference: return "blend_support_difference";
case EBlendExclusion: return "blend_support_exclusion";
case EBlendHslHue: return "blend_support_hsl_hue";
case EBlendHslSaturation: return "blend_support_hsl_saturation";
case EBlendHslColor: return "blend_support_hsl_color";
case EBlendHslLuminosity: return "blend_support_hsl_luminosity";
case EBlendAllEquations: return "blend_support_all_equations";
default: return "unknown";
}
}
static const char* getGeometryString(TLayoutGeometry geometry)
{
switch (geometry) {
@ -728,6 +774,7 @@ struct TShaderQualifiers {
int localSize[3]; // compute shader
bool earlyFragmentTests; // fragment input
TLayoutDepth layoutDepth;
bool blendEquation; // true if any blend equation was specified
void init()
{
@ -744,6 +791,7 @@ struct TShaderQualifiers {
localSize[2] = 1;
earlyFragmentTests = false;
layoutDepth = EldNone;
blendEquation = false;
}
// Merge in characteristics from the 'src' qualifier. They can override when
@ -774,6 +822,8 @@ struct TShaderQualifiers {
earlyFragmentTests = true;
if (src.layoutDepth)
layoutDepth = src.layoutDepth;
if (src.blendEquation)
blendEquation = src.blendEquation;
}
};