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For in-engine processing allow saving openexr to a buffer.

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This commit is contained in:
K. S. Ernest (iFire) Lee
2022-06-19 18:55:47 -07:00
parent d1dac8427a
commit ce42ee790c
5 changed files with 36 additions and 11 deletions
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33
modules/tinyexr/image_saver_tinyexr.cpp
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@@ -141,13 +141,14 @@ static int get_channel_count(Image::Format p_format) {
}
}
Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale) {
Vector<uint8_t> save_exr_buffer(const Ref<Image> &p_img, bool p_grayscale) {
Image::Format format = p_img->get_format();
if (!is_supported_format(format)) {
// Format not supported
print_error("Image format not supported for saving as EXR. Consider saving as PNG.");
return ERR_UNAVAILABLE;
return Vector<uint8_t>();
}
EXRHeader header;
@@ -175,15 +176,15 @@ Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale)
};
int channel_count = get_channel_count(format);
ERR_FAIL_COND_V(channel_count < 0, ERR_UNAVAILABLE);
ERR_FAIL_COND_V(p_grayscale && channel_count != 1, ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(channel_count < 0, Vector<uint8_t>());
ERR_FAIL_COND_V(p_grayscale && channel_count != 1, Vector<uint8_t>());
int target_pixel_type = get_target_pixel_type(format);
ERR_FAIL_COND_V(target_pixel_type < 0, ERR_UNAVAILABLE);
ERR_FAIL_COND_V(target_pixel_type < 0, Vector<uint8_t>());
int target_pixel_type_size = get_pixel_type_size(target_pixel_type);
ERR_FAIL_COND_V(target_pixel_type_size < 0, ERR_UNAVAILABLE);
ERR_FAIL_COND_V(target_pixel_type_size < 0, Vector<uint8_t>());
SrcPixelType src_pixel_type = get_source_pixel_type(format);
ERR_FAIL_COND_V(src_pixel_type == SRC_UNSUPPORTED, ERR_UNAVAILABLE);
ERR_FAIL_COND_V(src_pixel_type == SRC_UNSUPPORTED, Vector<uint8_t>());
const int pixel_count = p_img->get_width() * p_img->get_height();
const int *channel_mapping = channel_mappings[channel_count - 1];
@@ -270,15 +271,25 @@ Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale)
const char *err = nullptr;
size_t bytes = SaveEXRImageToMemory(&image, &header, &mem, &err);
if (err && *err != OK) {
return Vector<uint8_t>();
}
Vector<uint8_t> buffer;
buffer.resize(bytes);
memcpy(buffer.ptrw(), mem, bytes);
free(mem);
return buffer;
}
if (bytes == 0) {
print_error(String("Saving EXR failed. Error: {0}").format(varray(err)));
Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale) {
const Vector<uint8_t> buffer = save_exr_buffer(p_img, p_grayscale);
if (buffer.size() == 0) {
print_error(String("Saving EXR failed."));
return ERR_FILE_CANT_WRITE;
} else {
Ref<FileAccess> ref = FileAccess::open(p_path, FileAccess::WRITE);
ERR_FAIL_COND_V(ref.is_null(), ERR_FILE_CANT_WRITE);
ref->store_buffer(mem, bytes);
free(mem);
ref->store_buffer(buffer.ptr(), buffer.size());
}
return OK;