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output: fix transform matrix for 90/270 rotations

Browse source 
We need to adjust the second translation depending on the transform
we applied.

Fixes: 9601a2abf0 ("output: improve transform matrix calculation"
Closes: https://github.com/swaywm/wlroots/issues/2774
This commit is contained in:
Simon Ser 2021-03-11 09:49:38 +01:00
parent 9601a2abf0
commit 44fa2c4b49
4 changed files with 25 additions and 9 deletions
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10
backend/drm/drm.c
View file

@ -938,11 +938,17 @@ static bool drm_connector_set_cursor(struct wlr_output *output,
float output_matrix[9];
wlr_matrix_identity(output_matrix);
if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
struct wlr_box tr_size = {
.width = plane->surf.width,
.height = plane->surf.height,
};
wlr_box_transform(&tr_size, &tr_size, output->transform, 0, 0);
wlr_matrix_translate(output_matrix, plane->surf.width / 2.0,
plane->surf.height / 2.0);
wlr_matrix_transform(output_matrix, output->transform);
wlr_matrix_translate(output_matrix, - plane->surf.width / 2.0,
- plane->surf.height / 2.0);
wlr_matrix_translate(output_matrix, - tr_size.width / 2.0,
- tr_size.height / 2.0);
}
float matrix[9];

6
backend/wayland/output.c
View file

@ -434,9 +434,13 @@ static bool output_set_cursor(struct wlr_output *wlr_output,
float output_matrix[9];
wlr_matrix_identity(output_matrix);
if (wlr_output->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
struct wlr_box tr_size = { .width = width, .height = height };
wlr_box_transform(&tr_size, &tr_size, wlr_output->transform, 0, 0);
wlr_matrix_translate(output_matrix, width / 2.0, height / 2.0);
wlr_matrix_transform(output_matrix, wlr_output->transform);
wlr_matrix_translate(output_matrix, - width / 2.0, - height / 2.0);
wlr_matrix_translate(output_matrix,
- tr_size.width / 2.0, - tr_size.height / 2.0);
}
float matrix[9];

6
backend/x11/output.c
View file

@ -418,9 +418,13 @@ static bool output_cursor_to_picture(struct wlr_x11_output *output,
float output_matrix[9];
wlr_matrix_identity(output_matrix);
if (output->wlr_output.transform != WL_OUTPUT_TRANSFORM_NORMAL) {
struct wlr_box tr_size = { .width = width, .height = height };
wlr_box_transform(&tr_size, &tr_size, output->wlr_output.transform, 0, 0);
wlr_matrix_translate(output_matrix, width / 2.0, height / 2.0);
wlr_matrix_transform(output_matrix, output->wlr_output.transform);
wlr_matrix_translate(output_matrix, - width / 2.0, - height / 2.0);
wlr_matrix_translate(output_matrix,
- tr_size.width / 2.0, - tr_size.height / 2.0);
}
float matrix[9];

12
types/wlr_output.c
View file

@ -141,14 +141,16 @@ void wlr_output_update_enabled(struct wlr_output *output, bool enabled) {
}
static void output_update_matrix(struct wlr_output *output) {
float width = output->width / 2.f;
float height = output->height / 2.f;
wlr_matrix_identity(output->transform_matrix);
if (output->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
wlr_matrix_translate(output->transform_matrix, width, height);
int tr_width, tr_height;
wlr_output_transformed_resolution(output, &tr_width, &tr_height);
wlr_matrix_translate(output->transform_matrix,
output->width / 2.0, output->height / 2.0);
wlr_matrix_transform(output->transform_matrix, output->transform);
wlr_matrix_translate(output->transform_matrix, -width, -height);
wlr_matrix_translate(output->transform_matrix,
- tr_width / 2.0, - tr_height / 2.0);
}
}