mirror of
https://github.com/patriciogonzalezvivo/thebookofshaders
synced 2024-11-01 21:40:27 +00:00
| .. | ||
| README.md | ||
Mat4
4x4 floating point matrix
Declaration
mat4 aMat4 = mat4(1.0, 0.0, 0.0, 0.0, // 1. column
0.0, 1.0, 0.0, 0.0, // 2. column
0.0, 0.0, 1.0, 0.0, // 3. column
0.0, 0.0, 0.0, 1.0); // 4. column
mat4 bMat4 = mat4(1.0);
mat4 cMat4 = mat4(aVec4, bVec4, cVec4, dVec4);
mat4 dMat4 = mat4(aVec4, aVec3, bVec4, cVec4, aFloat);
Description
mat4 data type is compose for a 4x4 matrix of floating point. As you can see above, can be initialize in different ways:
-
Providing a value for each component column by column.
-
Providing one value that is used for the components on the main diagonal.
-
Providing a combination of vectors and scalars.
In the same way data can be accessed component-wise or column by column:
aMat4[3][3] = 1.0;
float aFloat = aMat4[3][3];
aMat4[0] = vec4(1.0);
vec4 aVec4 = aMat4[0];