GL: don't expose half float attributes on WebGL 1.

They weren't in the docs but in the internals. That's wrong.

src/Magnum/GL/Attribute.cpp

@@ -37,7 +37,9 @@ UnsignedInt FloatAttribute::size(GLint components, DataType dataType) {
             return components;
         case DataType::UnsignedShort:
         case DataType::Short:
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         case DataType::HalfFloat:
+        #endif
             return 2*components;
         case DataType::UnsignedInt:
         case DataType::Int:
@@ -88,7 +90,9 @@ UnsignedInt Attribute<Math::Vector<3, Float>>::size(GLint components, DataType d
             return components;
         case DataType::UnsignedShort:
         case DataType::Short:
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         case DataType::HalfFloat:
+        #endif
             return 2*components;
         case DataType::UnsignedInt:
         case DataType::Int:
@@ -117,7 +121,9 @@ UnsignedInt Attribute<Math::Vector<4, Float>>::size(GLint components, DataType d
             return components;
         case DataType::UnsignedShort:
         case DataType::Short:
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         case DataType::HalfFloat:
+        #endif
             return 2*components;
         case DataType::UnsignedInt:
         case DataType::Int:
@@ -259,7 +265,9 @@ Debug& operator<<(Debug& debug, FloatAttribute::DataType value) {
         _c(Short)
         _c(UnsignedInt)
         _c(Int)
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         _c(HalfFloat)
+        #endif
         _c(Float)
         #ifndef MAGNUM_TARGET_GLES
         _c(Double)
@@ -314,7 +322,9 @@ Debug& operator<<(Debug& debug, Attribute<Math::Vector<3, Float>>::DataType valu
         _c(Short)
         _c(UnsignedInt)
         _c(Int)
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         _c(HalfFloat)
+        #endif
         _c(Float)
         #ifndef MAGNUM_TARGET_GLES
         _c(Double)
@@ -337,7 +347,9 @@ Debug& operator<<(Debug& debug, Attribute<Math::Vector<4, Float>>::DataType valu
         _c(Short)
         _c(UnsignedInt)
         _c(Int)
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         _c(HalfFloat)
+        #endif
         _c(Float)
         #ifndef MAGNUM_TARGET_GLES
         _c(Double)

src/Magnum/GL/Attribute.h

@@ -607,11 +607,13 @@ struct FloatAttribute {
         Short = GL_SHORT,
         UnsignedInt = GL_UNSIGNED_INT,
         Int = GL_INT,
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         #ifndef MAGNUM_TARGET_GLES2
         HalfFloat = GL_HALF_FLOAT,
         #else
         HalfFloat = GL_HALF_FLOAT_OES,
         #endif
+        #endif
         Float = GL_FLOAT
 
         #ifndef MAGNUM_TARGET_GLES
@@ -705,11 +707,13 @@ template<> struct Attribute<Math::Vector<3, Float>>: SizedAttribute<1, 3> {
         Short = GL_SHORT,
         UnsignedInt = GL_UNSIGNED_INT,
         Int = GL_INT,
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         #ifndef MAGNUM_TARGET_GLES2
         HalfFloat = GL_HALF_FLOAT,
         #else
         HalfFloat = GL_HALF_FLOAT_OES,
         #endif
+        #endif
         Float = GL_FLOAT
 
         #ifndef MAGNUM_TARGET_GLES
@@ -751,11 +755,13 @@ template<> struct Attribute<Math::Vector<4, Float>> {
         Short = GL_SHORT,
         UnsignedInt = GL_UNSIGNED_INT,
         Int = GL_INT,
+        #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
         #ifndef MAGNUM_TARGET_GLES2
         HalfFloat = GL_HALF_FLOAT,
         #else
         HalfFloat = GL_HALF_FLOAT_OES,
         #endif
+        #endif
         Float = GL_FLOAT
         #ifndef MAGNUM_TARGET_GLES
         ,

src/Magnum/GL/Test/AttributeTest.cpp

@@ -276,9 +276,12 @@ void AttributeTest::attributeVector4() {
     #ifndef MAGNUM_TARGET_GLES
     Attribute a(Attribute::DataType::UnsignedInt2101010Rev);
     CORRADE_COMPARE(a.vectorSize(), 4);
-    #else
+    #elif !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
     Attribute a(Attribute::DataType::HalfFloat);
     CORRADE_COMPARE(a.vectorSize(), 8);
+    #else
+    Attribute a(Attribute::DataType::Float);
+    CORRADE_COMPARE(a.vectorSize(), 16);
     #endif
 }
 
@@ -424,8 +427,13 @@ void AttributeTest::debugDataTypeFloat() {
     typedef Attribute<3, Float> Attribute;
 
     std::ostringstream out;
+    #if !(defined(MAGNUM_TARGET_WEBGL) && defined(MAGNUM_TARGET_GLES2))
     Debug{&out} << Attribute::DataType::HalfFloat << Attribute::DataType(0xdead);
     CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::HalfFloat GL::Attribute::DataType(0xdead)\n");
+    #else
+    Debug{&out} << Attribute::DataType::Float << Attribute::DataType(0xdead);
+    CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::Float GL::Attribute::DataType(0xdead)\n");
+    #endif
 }
 
 #ifndef MAGNUM_TARGET_GLES2
@@ -452,16 +460,16 @@ void AttributeTest::debugDataTypeVector3() {
     typedef Attribute<3, Vector3> Attribute;
 
     std::ostringstream out;
-    Debug{&out} << Attribute::DataType::HalfFloat << Attribute::DataType(0xdead);
-    CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::HalfFloat GL::Attribute::DataType(0xdead)\n");
+    Debug{&out} << Attribute::DataType::Float << Attribute::DataType(0xdead);
+    CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::Float GL::Attribute::DataType(0xdead)\n");
 }
 
 void AttributeTest::debugDataTypeVector4() {
     typedef Attribute<3, Vector4> Attribute;
 
     std::ostringstream out;
-    Debug{&out} << Attribute::DataType::HalfFloat << Attribute::DataType(0xdead);
-    CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::HalfFloat GL::Attribute::DataType(0xdead)\n");
+    Debug{&out} << Attribute::DataType::Float << Attribute::DataType(0xdead);
+    CORRADE_COMPARE(out.str(), "GL::Attribute::DataType::Float GL::Attribute::DataType(0xdead)\n");
 }
 
 }}}}