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Merge pull request #453 from emersion/surface-transform 

Add surface transforms support
This commit is contained in:
Drew DeVault 2017-12-14 14:43:04 -05:00 committed by GitHub
parent 46ac8e1243 466e86b7b2
commit 23fb663ea4
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GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 114 additions and 75 deletions
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5
backend/drm/drm.c
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@ -565,8 +565,7 @@ static bool wlr_drm_connector_set_cursor(struct wlr_output *output,
enum wl_output_transform transform =
wlr_output_transform_invert(output->transform);
struct wlr_box transformed_hotspot;
wlr_output_transform_apply_to_box(transform, &hotspot,
&transformed_hotspot);
wlr_box_transform(&hotspot, transform, &transformed_hotspot);
plane->cursor_hotspot_x = transformed_hotspot.x;
plane->cursor_hotspot_y = transformed_hotspot.y;
@ -628,7 +627,7 @@ static bool wlr_drm_connector_move_cursor(struct wlr_output *output,
enum wl_output_transform transform =
wlr_output_transform_invert(output->transform);
struct wlr_box transformed_box;
wlr_output_transform_apply_to_box(transform, &box, &transformed_box);
wlr_box_transform(&box, transform, &transformed_box);
if (plane != NULL) {
transformed_box.x -= plane->cursor_hotspot_x;

3
backend/wayland/wl_seat.c
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@ -60,7 +60,8 @@ static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
box.x = wl_fixed_to_int(surface_x);
box.y = wl_fixed_to_int(surface_y);
struct wlr_box transformed;
wlr_output_transform_apply_to_box(wlr_output->transform, &box, &transformed);
wlr_box_transform(&box, wlr_output->transform, &transformed);
box.x /= wlr_output->scale;
box.y /= wlr_output->scale;

4
include/wlr/interfaces/wlr_output.h
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@ -34,8 +34,4 @@ struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
struct wl_display *display);
void wlr_output_destroy_global(struct wlr_output *wlr_output);
void wlr_output_transform_apply_to_box(enum wl_output_transform transform,
struct wlr_box *box, struct wlr_box *dest);
enum wl_output_transform wlr_output_transform_invert(enum wl_output_transform);
#endif

2
include/wlr/render/matrix.h
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@ -10,6 +10,8 @@ void wlr_matrix_rotate(float (*output)[16], float radians);
void wlr_matrix_mul(const float (*x)[16], const float (*y)[16], float (*product)[16]);
enum wl_output_transform;
void wlr_matrix_transform(float mat[static 16],
enum wl_output_transform transform);
void wlr_matrix_texture(float mat[static 16], int32_t width, int32_t height,
enum wl_output_transform transform);

4
include/wlr/types/wlr_box.h
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@ -18,4 +18,8 @@ bool wlr_box_contains_point(struct wlr_box *box, double x, double y);
bool wlr_box_empty(struct wlr_box *box);
enum wl_output_transform;
void wlr_box_transform(struct wlr_box *box, enum wl_output_transform transform,
struct wlr_box *dest);
#endif

2
include/wlr/types/wlr_output.h
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@ -117,4 +117,6 @@ bool wlr_output_cursor_move(struct wlr_output_cursor *cursor,
double x, double y);
void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor);
enum wl_output_transform wlr_output_transform_invert(enum wl_output_transform);
#endif

39
render/matrix.c
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@ -86,38 +86,55 @@ void wlr_matrix_mul(const float (*x)[16], const float (*y)[16], float (*product)
static const float transforms[][4] = {
[WL_OUTPUT_TRANSFORM_NORMAL] = {
1.0f, 0.0f,
0.0f, -1.0f,
0.0f, 1.0f,
},
[WL_OUTPUT_TRANSFORM_90] = {
0.0f, -1.0f,
-1.0f, 0.0f,
1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_180] = {
-1.0f, 0.0f,
0.0f, 1.0f,
0.0f, -1.0f,
},
[WL_OUTPUT_TRANSFORM_270] = {
0.0f, 1.0f,
1.0f, 0.0f,
-1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED] = {
-1.0f, 0.0f,
0.0f, -1.0f,
0.0f, 1.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_90] = {
0.0f, 1.0f,
0.0f, -1.0f,
-1.0f, 0.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_180] = {
1.0f, 0.0f,
0.0f, 1.0f,
0.0f, -1.0f,
},
[WL_OUTPUT_TRANSFORM_FLIPPED_270] = {
0.0f, -1.0f,
0.0f, 1.0f,
1.0f, 0.0f,
},
};
void wlr_matrix_transform(float mat[static 16],
enum wl_output_transform transform) {
memset(mat, 0, sizeof(*mat) * 16);
const float *t = transforms[transform];
// Rotation + reflection
mat[0] = t[0];
mat[1] = t[1];
mat[4] = t[2];
mat[5] = t[3];
// Identity
mat[10] = 1.0f;
mat[15] = 1.0f;
}
// Equivilent to glOrtho(0, width, 0, height, 1, -1) with the transform applied
void wlr_matrix_texture(float mat[static 16], int32_t width, int32_t height,
enum wl_output_transform transform) {
@ -127,11 +144,11 @@ void wlr_matrix_texture(float mat[static 16], int32_t width, int32_t height,
float x = 2.0f / width;
float y = 2.0f / height;
// Rotation + relection
// Rotation + reflection
mat[0] = x * t[0];
mat[1] = x * t[1];
mat[4] = y * t[2];
mat[5] = y * t[3];
mat[4] = y * -t[2];
mat[5] = y * -t[3];
// Translation
mat[3] = -copysign(1.0f, mat[0] + mat[1]);

6
rootston/desktop.c
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@ -294,10 +294,8 @@ static bool view_at(struct roots_view *view, double lx, double ly,
struct wlr_surface_state *state = view->wlr_surface->current;
struct wlr_box box = {
.x = 0,
.y = 0,
.width = state->buffer_width / state->scale,
.height = state->buffer_height / state->scale,
.x = 0, .y = 0,
.width = state->width, .height = state->height,
};
if (view->rotation != 0.0) {
// Coordinates relative to the center of the view

31
rootston/output.c
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@ -48,24 +48,43 @@ static void render_surface(struct wlr_surface *surface,
lx, ly, lx + render_width, ly + render_height)) {
float matrix[16];
float translate_origin[16];
wlr_matrix_translate(&translate_origin,
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_center[16];
wlr_matrix_translate(&translate_center, -render_width / 2,
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_origin, &rotate, &transform);
wlr_matrix_mul(&transform, &translate_center, &transform);
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_render_with_matrix(desktop->server->renderer, surface->texture,

47
types/wlr_box.c
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@ -2,6 +2,7 @@
#include <stdlib.h>
#include <math.h>
#include <stdbool.h>
#include <wayland-server-protocol.h>
#include <wlr/types/wlr_box.h>
#include <wlr/util/log.h>
@ -65,3 +66,49 @@ bool wlr_box_contains_point(struct wlr_box *box, double x, double y) {
y >= box->y && y <= box->y + box->height;
}
}
void wlr_box_transform(struct wlr_box *box,
enum wl_output_transform transform, struct wlr_box *dest) {
if (transform % 2 == 0) {
dest->width = box->width;
dest->height = box->height;
} else {
dest->width = box->height;
dest->height = box->width;
}
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dest->x = box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_90:
dest->x = box->y;
dest->y = box->width - box->x;
break;
case WL_OUTPUT_TRANSFORM_180:
dest->x = box->width - box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_270:
dest->x = box->height - box->y;
dest->y = box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest->x = box->width - box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest->x = box->height - box->y;
dest->y = box->width - box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest->x = box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest->x = box->y;
dest->y = box->x;
break;
}
}

46
types/wlr_output.c
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@ -713,52 +713,6 @@ void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor) {
free(cursor);
}
void wlr_output_transform_apply_to_box(enum wl_output_transform transform,
struct wlr_box *box, struct wlr_box *dest) {
if (transform % 2 == 0) {
dest->width = box->width;
dest->height = box->height;
} else {
dest->width = box->height;
dest->height = box->width;
}
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dest->x = box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_90:
dest->x = box->y;
dest->y = box->width - box->x;
break;
case WL_OUTPUT_TRANSFORM_180:
dest->x = box->width - box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_270:
dest->x = box->height - box->y;
dest->y = box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dest->x = box->width - box->x;
dest->y = box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dest->x = box->y;
dest->y = box->x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dest->x = box->x;
dest->y = box->height - box->y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dest->x = box->height - box->y;
dest->y = box->width - box->x;
break;
}
}
enum wl_output_transform wlr_output_transform_invert(
enum wl_output_transform transform) {
if ((transform & WL_OUTPUT_TRANSFORM_90) &&