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35 lines
891 B
Markdown
35 lines
891 B
Markdown
## Mat2
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2x2 floating point matrix
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### Declaration
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```glsl
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mat2 aMat2 = mat2(1.0, 0.0, // 1. column
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0.0, 1.0); // 2. column
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mat2 bMat2 = mat2(1.0);
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mat2 cMat2 = mat2(aVec2, bVec2);
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mat2 dMat2 = mat2(aVec3, aFloat);
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```
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### Description
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```mat2``` data type is compose for a 2x2 matrix of floating point. As you can see above, can be initialize in different ways:
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- Providing a value for each component column by column.
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- Providing one value that is used for the components on the main diagonal.
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- Providing a combination of vectors and scalars.
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In the same way data can be accessed component-wise or column by column:
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```glsl
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mat2 aMat2;
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aMat2[1][1] = 1.0;
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float aFloat = aMat2[1][1];
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aMat2[0] = vec2(1.0);
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vec2 aVec2 = aMat2[0];
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```
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### See Also
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[mat3](/glossary/?search=mat3), [mat4](/glossary/?search=mat4), [matrixCompMult()](/glossary/?search=matrixCompMult)
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