mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2026-04-17 06:46:39 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

util/matrix: Simplify matrix_projection

Browse source 
The transform argument is always passed WL_OUTPUT_TRANSFORM_FLIPPED_180
This commit is contained in:
Alexander Orzechowski 2025-01-27 13:48:07 -05:00
parent b6fec1b101
commit 51c07a662a
4 changed files with 7 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

14
util/matrix.c
View file

@ -97,19 +97,11 @@ void wlr_matrix_transform(float mat[static 9],
wlr_matrix_multiply(mat, mat, transforms[transform]);
}
void matrix_projection(float mat[static 9], int width, int height,
enum wl_output_transform transform) {
void matrix_projection(float mat[static 9], int width, int height) {
memset(mat, 0, sizeof(*mat) * 9);
const float *t = transforms[transform];
float x = 2.0f / width;
float y = 2.0f / height;
// Rotation + reflection
mat[0] = x * t[0];
mat[1] = x * t[1];
mat[3] = y * -t[3];
mat[4] = y * -t[4];
mat[0] = 2.0f / width;
mat[4] = 2.0f / height;
// Translation
mat[2] = -copysign(1.0f, mat[0] + mat[1]);