Convert span with dynamic extent to static extent

In some places we know the size at compile time, so use that knowlage.

Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

source/graphics/Color.h

@@ -71,7 +71,7 @@ struct CColor
 	}
 
 	// For passing to uniform as vec3/vec4.
-	std::span<const float> AsFloatArray() const
+	std::span<const float, 4> AsFloatArray() const
 	{
 		// Additional check to prevent a weird compiler has a different
 		// alignement for an array and a class members.
@@ -82,7 +82,7 @@ struct CColor
 			offsetof(CColor, b) == sizeof(float) * 2u &&
 			offsetof(CColor, a) == sizeof(float) * 3u,
 			"CColor should be properly layouted to use AsFloatArray");
-		return std::span(&r, 4);
+		return std::span<const float, 4>(&r, 4);
 	}
 
 	// For passing to CRenderer:

source/graphics/Font.cpp

@@ -528,7 +528,7 @@ void CFont::BlendGlyphBitmapToTextureRGBA(const FT_Bitmap& bitmap, int targetX,
 
 		for (uint x{0}; x != bitmap.width; ++x)
 		{
-			const std::span<u8> tempDstRow{dstRow + x * m_TextureFormatStride, 4};
+			const std::span<u8, 4> tempDstRow{dstRow + x * m_TextureFormatStride, 4};
 			u8 alpha{srcRow[x]};
 
 			const float srcAlpha{m_StrokeWidth > 0 ? (*m_GammaCorrectionLUT)[alpha] : alpha/255.0f};

source/maths/Matrix3D.h

@@ -334,7 +334,7 @@ public:
 	CVector3D RotateTransposed(const CVector3D& vector) const;
 
 	// Returns 16 element array of floats, e.g. for mat4 uniforms.
-	std::span<const float> AsFloatArray() const
+	std::span<const float, 16> AsFloatArray() const
 	{
 		// Additional check to prevent a weird compiler has a different
 		// alignement for an array and a class members.
@@ -344,7 +344,7 @@ public:
 			offsetof(CMatrix3D, _11) == 0 &&
 			offsetof(CMatrix3D, _44) == sizeof(float) * 15u,
 			"CMatrix3D should be properly layouted to use AsFloatArray");
-		return std::span<const float>(_data, 16);
+		return std::span<const float, 16>(_data);
 	}
 };
 

source/maths/Vector2D.h

@@ -164,7 +164,7 @@ public:
 	void operator-=(const CSize2D& size);
 
 	// Returns 2 element array of floats, e.g. for vec2 uniforms.
-	std::span<const float> AsFloatArray() const
+	std::span<const float, 2> AsFloatArray() const
 	{
 		// Additional check to prevent a weird compiler having a different
 		// alignement for an array and a class members.
@@ -173,7 +173,7 @@ public:
 			offsetof(CVector2D, X) == 0 &&
 			offsetof(CVector2D, Y) == sizeof(float),
 			"Vector2D should be properly layouted to use AsFloatArray");
-		return std::span<const float>(&X, 2);
+		return std::span<const float, 2>(&X, 2);
 	}
 
 public:

source/maths/Vector3D.h

@@ -124,7 +124,7 @@ class CVector3D
 		CVector3D Normalized() const;
 
 		// Returns 3 element array of floats, e.g. for vec3 uniforms.
-		std::span<const float> AsFloatArray() const
+		std::span<const float, 3> AsFloatArray() const
 		{
 			// Additional check to prevent a weird compiler has a different
 			// alignement for an array and a class members.
@@ -134,7 +134,7 @@ class CVector3D
 				offsetof(CVector3D, Y) == sizeof(float) &&
 				offsetof(CVector3D, Z) == sizeof(float) * 2u,
 				"Vector3D should be properly layouted to use AsFloatArray");
-			return std::span<const float>(&X, 3);
+			return std::span<const float, 3>(&X, 3);
 		}
 };
 

source/maths/Vector4D.h

@@ -126,7 +126,7 @@ public:
 	}
 
 	// Returns 4 element array of floats, e.g. for vec4 uniforms.
-	std::span<const float> AsFloatArray() const
+	std::span<const float, 4> AsFloatArray() const
 	{
 		// Additional check to prevent a weird compiler has a different
 		// alignement for an array and a class members.
@@ -135,7 +135,7 @@ public:
 			offsetof(CVector4D, X) == 0 &&
 			offsetof(CVector4D, W) == sizeof(float) * 3u,
 			"CVector4D should be properly layouted to use AsFloatArray");
-		return std::span<const float>(&X, 4);
+		return std::span<const float, 4>(&X, 4);
 	}
 
 	float X, Y, Z, W;