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render/pixman: fix scaling in render_pass_add_texture()

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Closes: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/3642
Fixes: 6830bfc17f ("render/pixman: implement render pass API")
This commit is contained in:
Simon Ser 2023-05-02 17:24:48 +02:00 • committed by Alexander Orzechowski
parent d5320e5f20
commit 6b7d1d732a
1 changed files with 13 additions and 6 deletions
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19
render/pixman/pass.c
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@ -31,7 +31,6 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
struct wlr_pixman_texture *texture = get_texture(options->texture);
struct wlr_pixman_buffer *buffer = pass->buffer;
struct wlr_box dst_box = options->dst_box;
if (texture->buffer != NULL && !begin_pixman_data_ptr_access(texture->buffer,
&texture->image, WLR_BUFFER_DATA_PTR_ACCESS_READ)) {
@ -47,6 +46,9 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
.height = roundf(src_fbox.height),
};
struct wlr_box dst_box;
wlr_render_texture_options_get_dst_box(options, &dst_box);
pixman_image_t *mask = NULL;
float alpha = wlr_render_texture_options_get_alpha(options);
if (alpha != 1) {
@ -55,8 +57,14 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
});
}
struct wlr_box orig_box;
wlr_box_transform(&orig_box, &dst_box, options->transform,
buffer->buffer->width, buffer->buffer->height);
int32_t dest_x, dest_y, width, height;
if (options->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
if (options->transform != WL_OUTPUT_TRANSFORM_NORMAL ||
orig_box.width != src_box.width ||
orig_box.height != src_box.height) {
// Cosinus/sinus values are extact integers for enum wl_output_transform entries
int tr_cos = 1, tr_sin = 0, tr_x = 0, tr_y = 0;
switch (options->transform) {
@ -84,10 +92,6 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
break;
}
struct wlr_box orig_box;
wlr_box_transform(&orig_box, &dst_box, options->transform,
buffer->buffer->width, buffer->buffer->height);
struct pixman_transform transform;
pixman_transform_init_identity(&transform);
pixman_transform_rotate(&transform, NULL,
@ -100,6 +104,9 @@ static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
pixman_int_to_fixed(tr_x), pixman_int_to_fixed(tr_y));
pixman_transform_translate(&transform, NULL,
-pixman_int_to_fixed(orig_box.x), -pixman_int_to_fixed(orig_box.y));
pixman_transform_scale(&transform, NULL,
pixman_double_to_fixed(src_box.width / (double)orig_box.width),
pixman_double_to_fixed(src_box.height / (double)orig_box.height));
pixman_image_set_transform(texture->image, &transform);
dest_x = dest_y = 0;