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Merge pull request #52456 from kleonc/image-fill-rect

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Rémi Verschelde 2021-11-24 16:34:01 +01:00 committed by GitHub
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4 changed files with 111 additions and 30 deletions
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72
core/io/image.cpp
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@ -86,20 +86,14 @@ SaveEXRFunc Image::save_exr_func = nullptr;
SavePNGBufferFunc Image::save_png_buffer_func = nullptr;
void Image::_put_pixelb(int p_x, int p_y, uint32_t p_pixelsize, uint8_t *p_data, const uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixelsize;
for (uint32_t i = 0; i < p_pixelsize; i++) {
p_data[ofs + i] = p_pixel[i];
}
void Image::_put_pixelb(int p_x, int p_y, uint32_t p_pixel_size, uint8_t *p_data, const uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixel_size;
memcpy(p_data + ofs, p_pixel, p_pixel_size);
}
void Image::_get_pixelb(int p_x, int p_y, uint32_t p_pixelsize, const uint8_t *p_data, uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixelsize;
for (uint32_t i = 0; i < p_pixelsize; i++) {
p_pixel[i] = p_data[ofs + i];
}
void Image::_get_pixelb(int p_x, int p_y, uint32_t p_pixel_size, const uint8_t *p_data, uint8_t *p_pixel) {
uint32_t ofs = (p_y * width + p_x) * p_pixel_size;
memcpy(p_pixel, p_data + ofs, p_pixel_size);
}
int Image::get_format_pixel_size(Format p_format) {
@ -2697,24 +2691,55 @@ void Image::blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, c
}
}
void Image::fill(const Color &c) {
// Repeats `p_pixel` `p_count` times in consecutive memory.
// Results in the original pixel and `p_count - 1` subsequent copies of it.
void Image::_repeat_pixel_over_subsequent_memory(uint8_t *p_pixel, int p_pixel_size, int p_count) {
int offset = 1;
for (int stride = 1; offset + stride <= p_count; stride *= 2) {
memcpy(p_pixel + offset * p_pixel_size, p_pixel, stride * p_pixel_size);
offset += stride;
}
if (offset < p_count) {
memcpy(p_pixel + offset * p_pixel_size, p_pixel, (p_count - offset) * p_pixel_size);
}
}
void Image::fill(const Color &p_color) {
ERR_FAIL_COND_MSG(!_can_modify(format), "Cannot fill in compressed or custom image formats.");
uint8_t *wp = data.ptrw();
uint8_t *dst_data_ptr = wp;
uint8_t *dst_data_ptr = data.ptrw();
int pixel_size = get_format_pixel_size(format);
// put first pixel with the format-aware API
set_pixel(0, 0, c);
// Put first pixel with the format-aware API.
_set_color_at_ofs(dst_data_ptr, 0, p_color);
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
uint8_t *dst = &dst_data_ptr[(y * width + x) * pixel_size];
_repeat_pixel_over_subsequent_memory(dst_data_ptr, pixel_size, width * height);
}
for (int k = 0; k < pixel_size; k++) {
dst[k] = dst_data_ptr[k];
}
void Image::fill_rect(const Rect2 &p_rect, const Color &p_color) {
ERR_FAIL_COND_MSG(!_can_modify(format), "Cannot fill rect in compressed or custom image formats.");
Rect2i r = Rect2i(0, 0, width, height).intersection(p_rect.abs());
if (r.has_no_area()) {
return;
}
uint8_t *dst_data_ptr = data.ptrw();
int pixel_size = get_format_pixel_size(format);
// Put first pixel with the format-aware API.
uint8_t *rect_first_pixel_ptr = &dst_data_ptr[(r.position.y * width + r.position.x) * pixel_size];
_set_color_at_ofs(rect_first_pixel_ptr, 0, p_color);
if (r.size.x == width) {
// No need to fill rows separately.
_repeat_pixel_over_subsequent_memory(rect_first_pixel_ptr, pixel_size, width * r.size.y);
} else {
_repeat_pixel_over_subsequent_memory(rect_first_pixel_ptr, pixel_size, r.size.x);
for (int y = 1; y < r.size.y; y++) {
memcpy(rect_first_pixel_ptr + y * width * pixel_size, rect_first_pixel_ptr, r.size.x * pixel_size);
}
}
}
@ -3160,6 +3185,7 @@ void Image::_bind_methods() {
ClassDB::bind_method(D_METHOD("blend_rect", "src", "src_rect", "dst"), &Image::blend_rect);
ClassDB::bind_method(D_METHOD("blend_rect_mask", "src", "mask", "src_rect", "dst"), &Image::blend_rect_mask);
ClassDB::bind_method(D_METHOD("fill", "color"), &Image::fill);
ClassDB::bind_method(D_METHOD("fill_rect", "rect", "color"), &Image::fill_rect);
ClassDB::bind_method(D_METHOD("get_used_rect"), &Image::get_used_rect);
ClassDB::bind_method(D_METHOD("get_rect", "rect"), &Image::get_rect);

9
core/io/image.h
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@ -190,8 +190,10 @@ private:
static int _get_dst_image_size(int p_width, int p_height, Format p_format, int &r_mipmaps, int p_mipmaps = -1, int *r_mm_width = nullptr, int *r_mm_height = nullptr);
bool _can_modify(Format p_format) const;
_FORCE_INLINE_ void _put_pixelb(int p_x, int p_y, uint32_t p_pixelsize, uint8_t *p_data, const uint8_t *p_pixel);
_FORCE_INLINE_ void _get_pixelb(int p_x, int p_y, uint32_t p_pixelsize, const uint8_t *p_data, uint8_t *p_pixel);
_FORCE_INLINE_ void _put_pixelb(int p_x, int p_y, uint32_t p_pixel_size, uint8_t *p_data, const uint8_t *p_pixel);
_FORCE_INLINE_ void _get_pixelb(int p_x, int p_y, uint32_t p_pixel_size, const uint8_t *p_data, uint8_t *p_pixel);
_FORCE_INLINE_ void _repeat_pixel_over_subsequent_memory(uint8_t *p_pixel, int p_pixel_size, int p_count);
void _set_data(const Dictionary &p_data);
Dictionary _get_data() const;
@ -362,7 +364,8 @@ public:
void blit_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest);
void blend_rect(const Ref<Image> &p_src, const Rect2 &p_src_rect, const Point2 &p_dest);
void blend_rect_mask(const Ref<Image> &p_src, const Ref<Image> &p_mask, const Rect2 &p_src_rect, const Point2 &p_dest);
void fill(const Color &c);
void fill(const Color &p_color);
void fill_rect(const Rect2 &p_rect, const Color &p_color);
Rect2 get_used_rect() const;
Ref<Image> get_rect(const Rect2 &p_area) const;

10
doc/classes/Image.xml
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@ -154,7 +154,15 @@
<return type="void" />
<argument index="0" name="color" type="Color" />
<description>
Fills the image with a given [Color].
Fills the image with [code]color[/code].
</description>
</method>
<method name="fill_rect">
<return type="void" />
<argument index="0" name="rect" type="Rect2" />
<argument index="1" name="color" type="Color" />
<description>
Fills [code]rect[/code] with [code]color[/code].
</description>
</method>
<method name="fix_alpha_edges">

50
tests/core/io/test_image.h
View File

@ -52,6 +52,13 @@ TEST_CASE("[Image] Instantiation") {
"A newly created image should not be compressed.");
CHECK(!image->has_mipmaps());
PackedByteArray image_data = image->get_data();
for (int i = 0; i < image_data.size(); i++) {
CHECK_MESSAGE(
image_data[i] == 0,
"An image created without data specified should have its data zeroed out.");
}
Ref<Image> image_copy = memnew(Image());
CHECK_MESSAGE(
image_copy->is_empty(),
@ -62,7 +69,7 @@ TEST_CASE("[Image] Instantiation") {
image->get_data() == image_copy->get_data(),
"Duplicated images should have the same data.");
PackedByteArray image_data = image->get_data();
image_data = image->get_data();
Ref<Image> image_from_data = memnew(Image(8, 4, false, Image::FORMAT_RGBA8, image_data));
CHECK_MESSAGE(
image->get_data() == image_from_data->get_data(),
@ -214,14 +221,51 @@ TEST_CASE("[Image] Modifying pixels of an image") {
// Fill image with color
image2->fill(Color(0.5, 0.5, 0.5, 0.5));
for (int x = 0; x < image2->get_width(); x++) {
for (int y = 0; y < image2->get_height(); y++) {
for (int y = 0; y < image2->get_height(); y++) {
for (int x = 0; x < image2->get_width(); x++) {
CHECK_MESSAGE(
image2->get_pixel(x, y).r > 0.49,
"fill() should colorize all pixels of the image.");
}
}
// Fill rect with color
{
const int img_width = 3;
const int img_height = 3;
Vector<Rect2> rects;
rects.push_back(Rect2());
rects.push_back(Rect2(-5, -5, 3, 3));
rects.push_back(Rect2(img_width, 0, 12, 12));
rects.push_back(Rect2(0, img_height, 12, 12));
rects.push_back(Rect2(img_width + 1, img_height + 2, 12, 12));
rects.push_back(Rect2(1, 1, 1, 1));
rects.push_back(Rect2(0, 1, 2, 3));
rects.push_back(Rect2(-5, 0, img_width + 10, 2));
rects.push_back(Rect2(0, -5, 2, img_height + 10));
rects.push_back(Rect2(-1, -1, img_width + 1, img_height + 1));
for (const Rect2 &rect : rects) {
Ref<Image> img = memnew(Image(img_width, img_height, false, Image::FORMAT_RGBA8));
CHECK_NOTHROW_MESSAGE(
img->fill_rect(rect, Color(1, 1, 1, 1)),
"fill_rect() shouldn't throw for any rect.");
for (int y = 0; y < img->get_height(); y++) {
for (int x = 0; x < img->get_width(); x++) {
if (rect.abs().has_point(Point2(x, y))) {
CHECK_MESSAGE(
img->get_pixel(x, y).is_equal_approx(Color(1, 1, 1, 1)),
"fill_rect() should colorize all image pixels within rect bounds.");
} else {
CHECK_MESSAGE(
!img->get_pixel(x, y).is_equal_approx(Color(1, 1, 1, 1)),
"fill_rect() shouldn't colorize any image pixel out of rect bounds.");
}
}
}
}
}
// Blend two images together
image->blend_rect(image2, Rect2(Vector2(0, 0), image2->get_size()), Vector2(0, 0));
CHECK_MESSAGE(