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Add thread.Pool with example in demo.odin; Update linalg to support handness changes for projection matrices

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This commit is contained in:
gingerBill
2020-01-02 15:07:12 +00:00
parent 16a7c55334
commit 3bd00fd6b7
8 changed files with 244 additions and 43 deletions
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core/math/linalg/specific.odin
+23 -8
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@@ -737,35 +737,50 @@ matrix4_look_at :: proc(eye, centre, up: Vector3) -> Matrix4 {
}
matrix4_perspective :: proc(fovy, aspect, near, far: Float) -> (m: Matrix4) {
matrix4_perspective :: proc(fovy, aspect, near, far: Float, flip_z_axis := true) -> (m: Matrix4) {
tan_half_fovy := math.tan(0.5 * fovy);
m[0][0] = 1 / (aspect*tan_half_fovy);
m[1][1] = 1 / (tan_half_fovy);
m[2][2] = -(far + near) / (far - near);
m[2][3] = -1;
m[2][2] = +(far + near) / (far - near);
m[2][3] = +1;
m[3][2] = -2*far*near / (far - near);
if flip_z_axis {
m[2] = -m[2];
}
return;
}
matrix_ortho3d :: proc(left, right, bottom, top, near, far: Float) -> (m: Matrix4) {
matrix_ortho3d :: proc(left, right, bottom, top, near, far: Float, flip_z_axis := true) -> (m: Matrix4) {
m[0][0] = +2 / (right - left);
m[1][1] = +2 / (top - bottom);
m[2][2] = -2 / (far - near);
m[2][2] = +2 / (far - near);
m[3][0] = -(right + left) / (right - left);
m[3][1] = -(top + bottom) / (top - bottom);
m[3][2] = -(far + near) / (far- near);
m[3][3] = 1;
if flip_z_axis {
m[2] = -m[2];
}
return;
}
matrix4_infinite_perspective :: proc(fovy, aspect, near: Float) -> (m: Matrix4) {
matrix4_infinite_perspective :: proc(fovy, aspect, near: Float, flip_z_axis := true) -> (m: Matrix4) {
tan_half_fovy := math.tan(0.5 * fovy);
m[0][0] = 1 / (aspect*tan_half_fovy);
m[1][1] = 1 / (tan_half_fovy);
m[2][2] = -1;
m[2][3] = -1;
m[2][2] = +1;
m[2][3] = +1;
m[3][2] = -2*near;
if flip_z_axis {
m[2] = -m[2];
}
return;
}