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abstract box matrix

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This commit is contained in:
Tony Crisci 2018-01-16 07:12:46 -05:00
parent bcb58b5caa
commit dc701b72fc
3 changed files with 52 additions and 40 deletions
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7
include/wlr/types/wlr_output.h
View file

@ -136,4 +136,11 @@ enum wl_output_transform wlr_output_transform_invert(
enum wl_output_transform wlr_output_transform_compose(
enum wl_output_transform tr_a, enum wl_output_transform tr_b);
/**
* Get a matrix suitable for rendering a box on the output.
*/
void wlr_output_get_box_matrix(struct wlr_output *output, int ox, int oy,
int width, int height, enum wl_output_transform transform,
float rotation, float (*mat)[16]);
#endif

42
rootston/output.c
View file

@ -53,46 +53,8 @@ static void render_surface(struct wlr_surface *surface,
};
if (wlr_output_layout_intersects(desktop->layout, wlr_output, &render_box)) {
float matrix[16];
float translate_center[16];
wlr_matrix_translate(&translate_center,
(int)ox + render_width / 2, (int)oy + render_height / 2, 0);
float rotate[16];
wlr_matrix_rotate(&rotate, rotation);
float translate_origin[16];
wlr_matrix_translate(&translate_origin, -render_width / 2,
-render_height / 2, 0);
float scale[16];
wlr_matrix_scale(&scale, render_width, render_height, 1);
float transform[16];
wlr_matrix_mul(&translate_center, &rotate, &transform);
wlr_matrix_mul(&transform, &translate_origin, &transform);
wlr_matrix_mul(&transform, &scale, &transform);
if (surface->current->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
float surface_translate_center[16];
wlr_matrix_translate(&surface_translate_center, 0.5, 0.5, 0);
float surface_transform[16];
wlr_matrix_transform(surface_transform,
wlr_output_transform_invert(surface->current->transform));
float surface_translate_origin[16];
wlr_matrix_translate(&surface_translate_origin, -0.5, -0.5, 0);
wlr_matrix_mul(&transform, &surface_translate_center,
&transform);
wlr_matrix_mul(&transform, &surface_transform, &transform);
wlr_matrix_mul(&transform, &surface_translate_origin,
&transform);
}
wlr_matrix_mul(&wlr_output->transform_matrix, &transform, &matrix);
wlr_output_get_box_matrix(wlr_output, ox, oy, render_width,
render_height, surface->current->transform, rotation, &matrix);
wlr_render_with_matrix(desktop->server->renderer, surface->texture,
&matrix);

43
types/wlr_output.c
View file

@ -751,3 +751,46 @@ enum wl_output_transform wlr_output_transform_compose(
}
return flipped | rotated;
}
void wlr_output_get_box_matrix(struct wlr_output *output, int ox, int oy,
int width, int height, enum wl_output_transform transform,
float rotation, float (*mat)[16]) {
float translate_center[16];
wlr_matrix_translate(&translate_center,
(int)ox + width / 2, (int)oy + height / 2, 0);
float rotate[16];
wlr_matrix_rotate(&rotate, rotation);
float translate_origin[16];
wlr_matrix_translate(&translate_origin, -width / 2,
-height / 2, 0);
float scale[16];
wlr_matrix_scale(&scale, width, height, 1);
float transform_matrix[16];
wlr_matrix_mul(&translate_center, &rotate, &transform_matrix);
wlr_matrix_mul(&transform_matrix, &translate_origin, &transform_matrix);
wlr_matrix_mul(&transform_matrix, &scale, &transform_matrix);
if (transform != WL_OUTPUT_TRANSFORM_NORMAL) {
float surface_translate_center[16];
wlr_matrix_translate(&surface_translate_center, 0.5, 0.5, 0);
float surface_transform[16];
wlr_matrix_transform(surface_transform,
wlr_output_transform_invert(transform));
float surface_translate_origin[16];
wlr_matrix_translate(&surface_translate_origin, -0.5, -0.5, 0);
wlr_matrix_mul(&transform_matrix, &surface_translate_center,
&transform_matrix);
wlr_matrix_mul(&transform_matrix, &surface_transform, &transform_matrix);
wlr_matrix_mul(&transform_matrix, &surface_translate_origin,
&transform_matrix);
}
wlr_matrix_mul(&output->transform_matrix, &transform_matrix, mat);
}